F: drivers/video/fb-puv3.c
F: drivers/rtc/rtc-puv3.c
+PMBUS HARDWARE MONITORING DRIVERS
+M: Guenter Roeck <guenter.roeck@ericsson.com>
+L: lm-sensors@lm-sensors.org
+W: http://www.lm-sensors.org/
+W: http://www.roeck-us.net/linux/drivers/
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git
+S: Maintained
+F: Documentation/hwmon/pmbus
+F: drivers/hwmon/pmbus/
+F: include/linux/i2c/pmbus.h
+
PMC SIERRA MaxRAID DRIVER
M: Anil Ravindranath <anil_ravindranath@pmc-sierra.com>
L: linux-scsi@vger.kernel.org
These devices are hard to detect and rarely found on mainstream
hardware. If unsure, say N.
-config PMBUS
- tristate "PMBus support"
- depends on I2C && EXPERIMENTAL
- default n
- help
- Say yes here if you want to enable PMBus support.
-
- This driver can also be built as a module. If so, the module will
- be called pmbus_core.
-
-if PMBUS
-
-config SENSORS_PMBUS
- tristate "Generic PMBus devices"
- default n
- help
- If you say yes here you get hardware monitoring support for generic
- PMBus devices, including but not limited to BMR450, BMR451, BMR453,
- BMR454, and LTC2978.
-
- This driver can also be built as a module. If so, the module will
- be called pmbus.
-
-config SENSORS_ADM1275
- tristate "Analog Devices ADM1275"
- default n
- help
- If you say yes here you get hardware monitoring support for Analog
- Devices ADM1275 Hot-Swap Controller and Digital Power Monitor.
-
- This driver can also be built as a module. If so, the module will
- be called adm1275.
-
-config SENSORS_MAX16064
- tristate "Maxim MAX16064"
- default n
- help
- If you say yes here you get hardware monitoring support for Maxim
- MAX16064.
-
- This driver can also be built as a module. If so, the module will
- be called max16064.
-
-config SENSORS_MAX34440
- tristate "Maxim MAX34440/MAX34441"
- default n
- help
- If you say yes here you get hardware monitoring support for Maxim
- MAX34440 and MAX34441.
-
- This driver can also be built as a module. If so, the module will
- be called max34440.
-
-config SENSORS_MAX8688
- tristate "Maxim MAX8688"
- default n
- help
- If you say yes here you get hardware monitoring support for Maxim
- MAX8688.
-
- This driver can also be built as a module. If so, the module will
- be called max8688.
-
-config SENSORS_UCD9000
- tristate "TI UCD90120, UCD90124, UCD9090, UCD90910"
- default n
- help
- If you say yes here you get hardware monitoring support for TI
- UCD90120, UCD90124, UCD9090, UCD90910 Sequencer and System Health
- Controllers.
-
- This driver can also be built as a module. If so, the module will
- be called ucd9000.
-
-config SENSORS_UCD9200
- tristate "TI UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, UCD9248"
- default n
- help
- If you say yes here you get hardware monitoring support for TI
- UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and UCD9248
- Digital PWM System Controllers.
-
- This driver can also be built as a module. If so, the module will
- be called ucd9200.
-
-endif # PMBUS
+source drivers/hwmon/pmbus/Kconfig
config SENSORS_SHT15
tristate "Sensiron humidity and temperature sensors. SHT15 and compat."
obj-$(CONFIG_SENSORS_WM831X) += wm831x-hwmon.o
obj-$(CONFIG_SENSORS_WM8350) += wm8350-hwmon.o
-# PMBus drivers
-obj-$(CONFIG_PMBUS) += pmbus_core.o
-obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o
-obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
-obj-$(CONFIG_SENSORS_MAX16064) += max16064.o
-obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
-obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
-obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o
-obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o
+obj-$(CONFIG_PMBUS) += pmbus/
ccflags-$(CONFIG_HWMON_DEBUG_CHIP) := -DDEBUG
+++ /dev/null
-/*
- * Hardware monitoring driver for Analog Devices ADM1275 Hot-Swap Controller
- * and Digital Power Monitor
- *
- * Copyright (c) 2011 Ericsson AB.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include "pmbus.h"
-
-#define ADM1275_PMON_CONFIG 0xd4
-
-#define ADM1275_VIN_VOUT_SELECT (1 << 6)
-#define ADM1275_VRANGE (1 << 5)
-
-static int adm1275_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- int config;
- int ret;
- struct pmbus_driver_info *info;
-
- if (!i2c_check_functionality(client->adapter,
- I2C_FUNC_SMBUS_READ_BYTE_DATA))
- return -ENODEV;
-
- info = kzalloc(sizeof(struct pmbus_driver_info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG);
- if (config < 0) {
- ret = config;
- goto err_mem;
- }
-
- info->pages = 1;
- info->direct[PSC_VOLTAGE_IN] = true;
- info->direct[PSC_VOLTAGE_OUT] = true;
- info->direct[PSC_CURRENT_OUT] = true;
- info->m[PSC_CURRENT_OUT] = 807;
- info->b[PSC_CURRENT_OUT] = 20475;
- info->R[PSC_CURRENT_OUT] = -1;
- info->func[0] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
-
- if (config & ADM1275_VRANGE) {
- info->m[PSC_VOLTAGE_IN] = 19199;
- info->b[PSC_VOLTAGE_IN] = 0;
- info->R[PSC_VOLTAGE_IN] = -2;
- info->m[PSC_VOLTAGE_OUT] = 19199;
- info->b[PSC_VOLTAGE_OUT] = 0;
- info->R[PSC_VOLTAGE_OUT] = -2;
- } else {
- info->m[PSC_VOLTAGE_IN] = 6720;
- info->b[PSC_VOLTAGE_IN] = 0;
- info->R[PSC_VOLTAGE_IN] = -1;
- info->m[PSC_VOLTAGE_OUT] = 6720;
- info->b[PSC_VOLTAGE_OUT] = 0;
- info->R[PSC_VOLTAGE_OUT] = -1;
- }
-
- if (config & ADM1275_VIN_VOUT_SELECT)
- info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
- else
- info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT;
-
- ret = pmbus_do_probe(client, id, info);
- if (ret)
- goto err_mem;
- return 0;
-
-err_mem:
- kfree(info);
- return ret;
-}
-
-static int adm1275_remove(struct i2c_client *client)
-{
- const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
- int ret;
-
- ret = pmbus_do_remove(client);
- kfree(info);
- return ret;
-}
-
-static const struct i2c_device_id adm1275_id[] = {
- {"adm1275", 0},
- { }
-};
-MODULE_DEVICE_TABLE(i2c, adm1275_id);
-
-static struct i2c_driver adm1275_driver = {
- .driver = {
- .name = "adm1275",
- },
- .probe = adm1275_probe,
- .remove = adm1275_remove,
- .id_table = adm1275_id,
-};
-
-static int __init adm1275_init(void)
-{
- return i2c_add_driver(&adm1275_driver);
-}
-
-static void __exit adm1275_exit(void)
-{
- i2c_del_driver(&adm1275_driver);
-}
-
-MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275");
-MODULE_LICENSE("GPL");
-module_init(adm1275_init);
-module_exit(adm1275_exit);
+++ /dev/null
-/*
- * Hardware monitoring driver for Maxim MAX16064
- *
- * Copyright (c) 2011 Ericsson AB.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/i2c.h>
-#include "pmbus.h"
-
-static struct pmbus_driver_info max16064_info = {
- .pages = 4,
- .direct[PSC_VOLTAGE_IN] = true,
- .direct[PSC_VOLTAGE_OUT] = true,
- .direct[PSC_TEMPERATURE] = true,
- .m[PSC_VOLTAGE_IN] = 19995,
- .b[PSC_VOLTAGE_IN] = 0,
- .R[PSC_VOLTAGE_IN] = -1,
- .m[PSC_VOLTAGE_OUT] = 19995,
- .b[PSC_VOLTAGE_OUT] = 0,
- .R[PSC_VOLTAGE_OUT] = -1,
- .m[PSC_TEMPERATURE] = -7612,
- .b[PSC_TEMPERATURE] = 335,
- .R[PSC_TEMPERATURE] = -3,
- .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP
- | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP,
- .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
- .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
- .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
-};
-
-static int max16064_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- return pmbus_do_probe(client, id, &max16064_info);
-}
-
-static int max16064_remove(struct i2c_client *client)
-{
- return pmbus_do_remove(client);
-}
-
-static const struct i2c_device_id max16064_id[] = {
- {"max16064", 0},
- {}
-};
-
-MODULE_DEVICE_TABLE(i2c, max16064_id);
-
-/* This is the driver that will be inserted */
-static struct i2c_driver max16064_driver = {
- .driver = {
- .name = "max16064",
- },
- .probe = max16064_probe,
- .remove = max16064_remove,
- .id_table = max16064_id,
-};
-
-static int __init max16064_init(void)
-{
- return i2c_add_driver(&max16064_driver);
-}
-
-static void __exit max16064_exit(void)
-{
- i2c_del_driver(&max16064_driver);
-}
-
-MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("PMBus driver for Maxim MAX16064");
-MODULE_LICENSE("GPL");
-module_init(max16064_init);
-module_exit(max16064_exit);
+++ /dev/null
-/*
- * Hardware monitoring driver for Maxim MAX34440/MAX34441
- *
- * Copyright (c) 2011 Ericsson AB.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/i2c.h>
-#include "pmbus.h"
-
-enum chips { max34440, max34441 };
-
-#define MAX34440_STATUS_OC_WARN (1 << 0)
-#define MAX34440_STATUS_OC_FAULT (1 << 1)
-#define MAX34440_STATUS_OT_FAULT (1 << 5)
-#define MAX34440_STATUS_OT_WARN (1 << 6)
-
-static int max34440_read_byte_data(struct i2c_client *client, int page, int reg)
-{
- int ret;
- int mfg_status;
-
- ret = pmbus_set_page(client, page);
- if (ret < 0)
- return ret;
-
- switch (reg) {
- case PMBUS_STATUS_IOUT:
- mfg_status = pmbus_read_word_data(client, 0,
- PMBUS_STATUS_MFR_SPECIFIC);
- if (mfg_status < 0)
- return mfg_status;
- if (mfg_status & MAX34440_STATUS_OC_WARN)
- ret |= PB_IOUT_OC_WARNING;
- if (mfg_status & MAX34440_STATUS_OC_FAULT)
- ret |= PB_IOUT_OC_FAULT;
- break;
- case PMBUS_STATUS_TEMPERATURE:
- mfg_status = pmbus_read_word_data(client, 0,
- PMBUS_STATUS_MFR_SPECIFIC);
- if (mfg_status < 0)
- return mfg_status;
- if (mfg_status & MAX34440_STATUS_OT_WARN)
- ret |= PB_TEMP_OT_WARNING;
- if (mfg_status & MAX34440_STATUS_OT_FAULT)
- ret |= PB_TEMP_OT_FAULT;
- break;
- default:
- ret = -ENODATA;
- break;
- }
- return ret;
-}
-
-static struct pmbus_driver_info max34440_info[] = {
- [max34440] = {
- .pages = 14,
- .direct[PSC_VOLTAGE_IN] = true,
- .direct[PSC_VOLTAGE_OUT] = true,
- .direct[PSC_TEMPERATURE] = true,
- .direct[PSC_CURRENT_OUT] = true,
- .m[PSC_VOLTAGE_IN] = 1,
- .b[PSC_VOLTAGE_IN] = 0,
- .R[PSC_VOLTAGE_IN] = 3, /* R = 0 in datasheet reflects mV */
- .m[PSC_VOLTAGE_OUT] = 1,
- .b[PSC_VOLTAGE_OUT] = 0,
- .R[PSC_VOLTAGE_OUT] = 3, /* R = 0 in datasheet reflects mV */
- .m[PSC_CURRENT_OUT] = 1,
- .b[PSC_CURRENT_OUT] = 0,
- .R[PSC_CURRENT_OUT] = 3, /* R = 0 in datasheet reflects mA */
- .m[PSC_TEMPERATURE] = 1,
- .b[PSC_TEMPERATURE] = 0,
- .R[PSC_TEMPERATURE] = 2,
- .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .read_byte_data = max34440_read_byte_data,
- },
- [max34441] = {
- .pages = 12,
- .direct[PSC_VOLTAGE_IN] = true,
- .direct[PSC_VOLTAGE_OUT] = true,
- .direct[PSC_TEMPERATURE] = true,
- .direct[PSC_CURRENT_OUT] = true,
- .direct[PSC_FAN] = true,
- .m[PSC_VOLTAGE_IN] = 1,
- .b[PSC_VOLTAGE_IN] = 0,
- .R[PSC_VOLTAGE_IN] = 3,
- .m[PSC_VOLTAGE_OUT] = 1,
- .b[PSC_VOLTAGE_OUT] = 0,
- .R[PSC_VOLTAGE_OUT] = 3,
- .m[PSC_CURRENT_OUT] = 1,
- .b[PSC_CURRENT_OUT] = 0,
- .R[PSC_CURRENT_OUT] = 3,
- .m[PSC_TEMPERATURE] = 1,
- .b[PSC_TEMPERATURE] = 0,
- .R[PSC_TEMPERATURE] = 2,
- .m[PSC_FAN] = 1,
- .b[PSC_FAN] = 0,
- .R[PSC_FAN] = 0,
- .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
- | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
- .func[5] = PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12,
- .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
- .read_byte_data = max34440_read_byte_data,
- },
-};
-
-static int max34440_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- return pmbus_do_probe(client, id, &max34440_info[id->driver_data]);
-}
-
-static int max34440_remove(struct i2c_client *client)
-{
- return pmbus_do_remove(client);
-}
-
-static const struct i2c_device_id max34440_id[] = {
- {"max34440", max34440},
- {"max34441", max34441},
- {}
-};
-
-MODULE_DEVICE_TABLE(i2c, max34440_id);
-
-/* This is the driver that will be inserted */
-static struct i2c_driver max34440_driver = {
- .driver = {
- .name = "max34440",
- },
- .probe = max34440_probe,
- .remove = max34440_remove,
- .id_table = max34440_id,
-};
-
-static int __init max34440_init(void)
-{
- return i2c_add_driver(&max34440_driver);
-}
-
-static void __exit max34440_exit(void)
-{
- i2c_del_driver(&max34440_driver);
-}
-
-MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441");
-MODULE_LICENSE("GPL");
-module_init(max34440_init);
-module_exit(max34440_exit);
+++ /dev/null
-/*
- * Hardware monitoring driver for Maxim MAX8688
- *
- * Copyright (c) 2011 Ericsson AB.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/i2c.h>
-#include "pmbus.h"
-
-#define MAX8688_MFG_STATUS 0xd8
-
-#define MAX8688_STATUS_OC_FAULT (1 << 4)
-#define MAX8688_STATUS_OV_FAULT (1 << 5)
-#define MAX8688_STATUS_OV_WARNING (1 << 8)
-#define MAX8688_STATUS_UV_FAULT (1 << 9)
-#define MAX8688_STATUS_UV_WARNING (1 << 10)
-#define MAX8688_STATUS_UC_FAULT (1 << 11)
-#define MAX8688_STATUS_OC_WARNING (1 << 12)
-#define MAX8688_STATUS_OT_FAULT (1 << 13)
-#define MAX8688_STATUS_OT_WARNING (1 << 14)
-
-static int max8688_read_byte_data(struct i2c_client *client, int page, int reg)
-{
- int ret = 0;
- int mfg_status;
-
- if (page)
- return -EINVAL;
-
- switch (reg) {
- case PMBUS_STATUS_VOUT:
- mfg_status = pmbus_read_word_data(client, 0,
- MAX8688_MFG_STATUS);
- if (mfg_status < 0)
- return mfg_status;
- if (mfg_status & MAX8688_STATUS_UV_WARNING)
- ret |= PB_VOLTAGE_UV_WARNING;
- if (mfg_status & MAX8688_STATUS_UV_FAULT)
- ret |= PB_VOLTAGE_UV_FAULT;
- if (mfg_status & MAX8688_STATUS_OV_WARNING)
- ret |= PB_VOLTAGE_OV_WARNING;
- if (mfg_status & MAX8688_STATUS_OV_FAULT)
- ret |= PB_VOLTAGE_OV_FAULT;
- break;
- case PMBUS_STATUS_IOUT:
- mfg_status = pmbus_read_word_data(client, 0,
- MAX8688_MFG_STATUS);
- if (mfg_status < 0)
- return mfg_status;
- if (mfg_status & MAX8688_STATUS_UC_FAULT)
- ret |= PB_IOUT_UC_FAULT;
- if (mfg_status & MAX8688_STATUS_OC_WARNING)
- ret |= PB_IOUT_OC_WARNING;
- if (mfg_status & MAX8688_STATUS_OC_FAULT)
- ret |= PB_IOUT_OC_FAULT;
- break;
- case PMBUS_STATUS_TEMPERATURE:
- mfg_status = pmbus_read_word_data(client, 0,
- MAX8688_MFG_STATUS);
- if (mfg_status < 0)
- return mfg_status;
- if (mfg_status & MAX8688_STATUS_OT_WARNING)
- ret |= PB_TEMP_OT_WARNING;
- if (mfg_status & MAX8688_STATUS_OT_FAULT)
- ret |= PB_TEMP_OT_FAULT;
- break;
- default:
- ret = -ENODATA;
- break;
- }
- return ret;
-}
-
-static struct pmbus_driver_info max8688_info = {
- .pages = 1,
- .direct[PSC_VOLTAGE_IN] = true,
- .direct[PSC_VOLTAGE_OUT] = true,
- .direct[PSC_TEMPERATURE] = true,
- .direct[PSC_CURRENT_OUT] = true,
- .m[PSC_VOLTAGE_IN] = 19995,
- .b[PSC_VOLTAGE_IN] = 0,
- .R[PSC_VOLTAGE_IN] = -1,
- .m[PSC_VOLTAGE_OUT] = 19995,
- .b[PSC_VOLTAGE_OUT] = 0,
- .R[PSC_VOLTAGE_OUT] = -1,
- .m[PSC_CURRENT_OUT] = 23109,
- .b[PSC_CURRENT_OUT] = 0,
- .R[PSC_CURRENT_OUT] = -2,
- .m[PSC_TEMPERATURE] = -7612,
- .b[PSC_TEMPERATURE] = 335,
- .R[PSC_TEMPERATURE] = -3,
- .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | PMBUS_HAVE_TEMP
- | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
- | PMBUS_HAVE_STATUS_TEMP,
- .read_byte_data = max8688_read_byte_data,
-};
-
-static int max8688_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- return pmbus_do_probe(client, id, &max8688_info);
-}
-
-static int max8688_remove(struct i2c_client *client)
-{
- return pmbus_do_remove(client);
-}
-
-static const struct i2c_device_id max8688_id[] = {
- {"max8688", 0},
- { }
-};
-
-MODULE_DEVICE_TABLE(i2c, max8688_id);
-
-/* This is the driver that will be inserted */
-static struct i2c_driver max8688_driver = {
- .driver = {
- .name = "max8688",
- },
- .probe = max8688_probe,
- .remove = max8688_remove,
- .id_table = max8688_id,
-};
-
-static int __init max8688_init(void)
-{
- return i2c_add_driver(&max8688_driver);
-}
-
-static void __exit max8688_exit(void)
-{
- i2c_del_driver(&max8688_driver);
-}
-
-MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("PMBus driver for Maxim MAX8688");
-MODULE_LICENSE("GPL");
-module_init(max8688_init);
-module_exit(max8688_exit);
+++ /dev/null
-/*
- * Hardware monitoring driver for PMBus devices
- *
- * Copyright (c) 2010, 2011 Ericsson AB.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <linux/i2c.h>
-#include "pmbus.h"
-
-/*
- * Find sensor groups and status registers on each page.
- */
-static void pmbus_find_sensor_groups(struct i2c_client *client,
- struct pmbus_driver_info *info)
-{
- int page;
-
- /* Sensors detected on page 0 only */
- if (pmbus_check_word_register(client, 0, PMBUS_READ_VIN))
- info->func[0] |= PMBUS_HAVE_VIN;
- if (pmbus_check_word_register(client, 0, PMBUS_READ_VCAP))
- info->func[0] |= PMBUS_HAVE_VCAP;
- if (pmbus_check_word_register(client, 0, PMBUS_READ_IIN))
- info->func[0] |= PMBUS_HAVE_IIN;
- if (pmbus_check_word_register(client, 0, PMBUS_READ_PIN))
- info->func[0] |= PMBUS_HAVE_PIN;
- if (info->func[0]
- && pmbus_check_byte_register(client, 0, PMBUS_STATUS_INPUT))
- info->func[0] |= PMBUS_HAVE_STATUS_INPUT;
- if (pmbus_check_byte_register(client, 0, PMBUS_FAN_CONFIG_12) &&
- pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_1)) {
- info->func[0] |= PMBUS_HAVE_FAN12;
- if (pmbus_check_byte_register(client, 0, PMBUS_STATUS_FAN_12))
- info->func[0] |= PMBUS_HAVE_STATUS_FAN12;
- }
- if (pmbus_check_byte_register(client, 0, PMBUS_FAN_CONFIG_34) &&
- pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_3)) {
- info->func[0] |= PMBUS_HAVE_FAN34;
- if (pmbus_check_byte_register(client, 0, PMBUS_STATUS_FAN_34))
- info->func[0] |= PMBUS_HAVE_STATUS_FAN34;
- }
- if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_1))
- info->func[0] |= PMBUS_HAVE_TEMP;
- if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_2))
- info->func[0] |= PMBUS_HAVE_TEMP2;
- if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_3))
- info->func[0] |= PMBUS_HAVE_TEMP3;
- if (info->func[0] & (PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2
- | PMBUS_HAVE_TEMP3)
- && pmbus_check_byte_register(client, 0,
- PMBUS_STATUS_TEMPERATURE))
- info->func[0] |= PMBUS_HAVE_STATUS_TEMP;
-
- /* Sensors detected on all pages */
- for (page = 0; page < info->pages; page++) {
- if (pmbus_check_word_register(client, page, PMBUS_READ_VOUT)) {
- info->func[page] |= PMBUS_HAVE_VOUT;
- if (pmbus_check_byte_register(client, page,
- PMBUS_STATUS_VOUT))
- info->func[page] |= PMBUS_HAVE_STATUS_VOUT;
- }
- if (pmbus_check_word_register(client, page, PMBUS_READ_IOUT)) {
- info->func[page] |= PMBUS_HAVE_IOUT;
- if (pmbus_check_byte_register(client, 0,
- PMBUS_STATUS_IOUT))
- info->func[page] |= PMBUS_HAVE_STATUS_IOUT;
- }
- if (pmbus_check_word_register(client, page, PMBUS_READ_POUT))
- info->func[page] |= PMBUS_HAVE_POUT;
- }
-}
-
-/*
- * Identify chip parameters.
- */
-static int pmbus_identify(struct i2c_client *client,
- struct pmbus_driver_info *info)
-{
- if (!info->pages) {
- /*
- * Check if the PAGE command is supported. If it is,
- * keep setting the page number until it fails or until the
- * maximum number of pages has been reached. Assume that
- * this is the number of pages supported by the chip.
- */
- if (pmbus_check_byte_register(client, 0, PMBUS_PAGE)) {
- int page;
-
- for (page = 1; page < PMBUS_PAGES; page++) {
- if (pmbus_set_page(client, page) < 0)
- break;
- }
- pmbus_set_page(client, 0);
- info->pages = page;
- } else {
- info->pages = 1;
- }
- }
-
- /*
- * We should check if the COEFFICIENTS register is supported.
- * If it is, and the chip is configured for direct mode, we can read
- * the coefficients from the chip, one set per group of sensor
- * registers.
- *
- * To do this, we will need access to a chip which actually supports the
- * COEFFICIENTS command, since the command is too complex to implement
- * without testing it.
- */
-
- /* Try to find sensor groups */
- pmbus_find_sensor_groups(client, info);
-
- return 0;
-}
-
-static int pmbus_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct pmbus_driver_info *info;
- int ret;
-
- info = kzalloc(sizeof(struct pmbus_driver_info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- info->pages = id->driver_data;
- info->identify = pmbus_identify;
-
- ret = pmbus_do_probe(client, id, info);
- if (ret < 0)
- goto out;
- return 0;
-
-out:
- kfree(info);
- return ret;
-}
-
-static int pmbus_remove(struct i2c_client *client)
-{
- int ret;
- const struct pmbus_driver_info *info;
-
- info = pmbus_get_driver_info(client);
- ret = pmbus_do_remove(client);
- kfree(info);
- return ret;
-}
-
-/*
- * Use driver_data to set the number of pages supported by the chip.
- */
-static const struct i2c_device_id pmbus_id[] = {
- {"bmr450", 1},
- {"bmr451", 1},
- {"bmr453", 1},
- {"bmr454", 1},
- {"ltc2978", 8},
- {"pmbus", 0},
- {}
-};
-
-MODULE_DEVICE_TABLE(i2c, pmbus_id);
-
-/* This is the driver that will be inserted */
-static struct i2c_driver pmbus_driver = {
- .driver = {
- .name = "pmbus",
- },
- .probe = pmbus_probe,
- .remove = pmbus_remove,
- .id_table = pmbus_id,
-};
-
-static int __init pmbus_init(void)
-{
- return i2c_add_driver(&pmbus_driver);
-}
-
-static void __exit pmbus_exit(void)
-{
- i2c_del_driver(&pmbus_driver);
-}
-
-MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("Generic PMBus driver");
-MODULE_LICENSE("GPL");
-module_init(pmbus_init);
-module_exit(pmbus_exit);
+++ /dev/null
-/*
- * pmbus.h - Common defines and structures for PMBus devices
- *
- * Copyright (c) 2010, 2011 Ericsson AB.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef PMBUS_H
-#define PMBUS_H
-
-/*
- * Registers
- */
-#define PMBUS_PAGE 0x00
-#define PMBUS_OPERATION 0x01
-#define PMBUS_ON_OFF_CONFIG 0x02
-#define PMBUS_CLEAR_FAULTS 0x03
-#define PMBUS_PHASE 0x04
-
-#define PMBUS_CAPABILITY 0x19
-#define PMBUS_QUERY 0x1A
-
-#define PMBUS_VOUT_MODE 0x20
-#define PMBUS_VOUT_COMMAND 0x21
-#define PMBUS_VOUT_TRIM 0x22
-#define PMBUS_VOUT_CAL_OFFSET 0x23
-#define PMBUS_VOUT_MAX 0x24
-#define PMBUS_VOUT_MARGIN_HIGH 0x25
-#define PMBUS_VOUT_MARGIN_LOW 0x26
-#define PMBUS_VOUT_TRANSITION_RATE 0x27
-#define PMBUS_VOUT_DROOP 0x28
-#define PMBUS_VOUT_SCALE_LOOP 0x29
-#define PMBUS_VOUT_SCALE_MONITOR 0x2A
-
-#define PMBUS_COEFFICIENTS 0x30
-#define PMBUS_POUT_MAX 0x31
-
-#define PMBUS_FAN_CONFIG_12 0x3A
-#define PMBUS_FAN_COMMAND_1 0x3B
-#define PMBUS_FAN_COMMAND_2 0x3C
-#define PMBUS_FAN_CONFIG_34 0x3D
-#define PMBUS_FAN_COMMAND_3 0x3E
-#define PMBUS_FAN_COMMAND_4 0x3F
-
-#define PMBUS_VOUT_OV_FAULT_LIMIT 0x40
-#define PMBUS_VOUT_OV_FAULT_RESPONSE 0x41
-#define PMBUS_VOUT_OV_WARN_LIMIT 0x42
-#define PMBUS_VOUT_UV_WARN_LIMIT 0x43
-#define PMBUS_VOUT_UV_FAULT_LIMIT 0x44
-#define PMBUS_VOUT_UV_FAULT_RESPONSE 0x45
-#define PMBUS_IOUT_OC_FAULT_LIMIT 0x46
-#define PMBUS_IOUT_OC_FAULT_RESPONSE 0x47
-#define PMBUS_IOUT_OC_LV_FAULT_LIMIT 0x48
-#define PMBUS_IOUT_OC_LV_FAULT_RESPONSE 0x49
-#define PMBUS_IOUT_OC_WARN_LIMIT 0x4A
-#define PMBUS_IOUT_UC_FAULT_LIMIT 0x4B
-#define PMBUS_IOUT_UC_FAULT_RESPONSE 0x4C
-
-#define PMBUS_OT_FAULT_LIMIT 0x4F
-#define PMBUS_OT_FAULT_RESPONSE 0x50
-#define PMBUS_OT_WARN_LIMIT 0x51
-#define PMBUS_UT_WARN_LIMIT 0x52
-#define PMBUS_UT_FAULT_LIMIT 0x53
-#define PMBUS_UT_FAULT_RESPONSE 0x54
-#define PMBUS_VIN_OV_FAULT_LIMIT 0x55
-#define PMBUS_VIN_OV_FAULT_RESPONSE 0x56
-#define PMBUS_VIN_OV_WARN_LIMIT 0x57
-#define PMBUS_VIN_UV_WARN_LIMIT 0x58
-#define PMBUS_VIN_UV_FAULT_LIMIT 0x59
-
-#define PMBUS_IIN_OC_FAULT_LIMIT 0x5B
-#define PMBUS_IIN_OC_WARN_LIMIT 0x5D
-
-#define PMBUS_POUT_OP_FAULT_LIMIT 0x68
-#define PMBUS_POUT_OP_WARN_LIMIT 0x6A
-#define PMBUS_PIN_OP_WARN_LIMIT 0x6B
-
-#define PMBUS_STATUS_BYTE 0x78
-#define PMBUS_STATUS_WORD 0x79
-#define PMBUS_STATUS_VOUT 0x7A
-#define PMBUS_STATUS_IOUT 0x7B
-#define PMBUS_STATUS_INPUT 0x7C
-#define PMBUS_STATUS_TEMPERATURE 0x7D
-#define PMBUS_STATUS_CML 0x7E
-#define PMBUS_STATUS_OTHER 0x7F
-#define PMBUS_STATUS_MFR_SPECIFIC 0x80
-#define PMBUS_STATUS_FAN_12 0x81
-#define PMBUS_STATUS_FAN_34 0x82
-
-#define PMBUS_READ_VIN 0x88
-#define PMBUS_READ_IIN 0x89
-#define PMBUS_READ_VCAP 0x8A
-#define PMBUS_READ_VOUT 0x8B
-#define PMBUS_READ_IOUT 0x8C
-#define PMBUS_READ_TEMPERATURE_1 0x8D
-#define PMBUS_READ_TEMPERATURE_2 0x8E
-#define PMBUS_READ_TEMPERATURE_3 0x8F
-#define PMBUS_READ_FAN_SPEED_1 0x90
-#define PMBUS_READ_FAN_SPEED_2 0x91
-#define PMBUS_READ_FAN_SPEED_3 0x92
-#define PMBUS_READ_FAN_SPEED_4 0x93
-#define PMBUS_READ_DUTY_CYCLE 0x94
-#define PMBUS_READ_FREQUENCY 0x95
-#define PMBUS_READ_POUT 0x96
-#define PMBUS_READ_PIN 0x97
-
-#define PMBUS_REVISION 0x98
-#define PMBUS_MFR_ID 0x99
-#define PMBUS_MFR_MODEL 0x9A
-#define PMBUS_MFR_REVISION 0x9B
-#define PMBUS_MFR_LOCATION 0x9C
-#define PMBUS_MFR_DATE 0x9D
-#define PMBUS_MFR_SERIAL 0x9E
-
-/*
- * CAPABILITY
- */
-#define PB_CAPABILITY_SMBALERT (1<<4)
-#define PB_CAPABILITY_ERROR_CHECK (1<<7)
-
-/*
- * VOUT_MODE
- */
-#define PB_VOUT_MODE_MODE_MASK 0xe0
-#define PB_VOUT_MODE_PARAM_MASK 0x1f
-
-#define PB_VOUT_MODE_LINEAR 0x00
-#define PB_VOUT_MODE_VID 0x20
-#define PB_VOUT_MODE_DIRECT 0x40
-
-/*
- * Fan configuration
- */
-#define PB_FAN_2_PULSE_MASK ((1 << 0) | (1 << 1))
-#define PB_FAN_2_RPM (1 << 2)
-#define PB_FAN_2_INSTALLED (1 << 3)
-#define PB_FAN_1_PULSE_MASK ((1 << 4) | (1 << 5))
-#define PB_FAN_1_RPM (1 << 6)
-#define PB_FAN_1_INSTALLED (1 << 7)
-
-/*
- * STATUS_BYTE, STATUS_WORD (lower)
- */
-#define PB_STATUS_NONE_ABOVE (1<<0)
-#define PB_STATUS_CML (1<<1)
-#define PB_STATUS_TEMPERATURE (1<<2)
-#define PB_STATUS_VIN_UV (1<<3)
-#define PB_STATUS_IOUT_OC (1<<4)
-#define PB_STATUS_VOUT_OV (1<<5)
-#define PB_STATUS_OFF (1<<6)
-#define PB_STATUS_BUSY (1<<7)
-
-/*
- * STATUS_WORD (upper)
- */
-#define PB_STATUS_UNKNOWN (1<<8)
-#define PB_STATUS_OTHER (1<<9)
-#define PB_STATUS_FANS (1<<10)
-#define PB_STATUS_POWER_GOOD_N (1<<11)
-#define PB_STATUS_WORD_MFR (1<<12)
-#define PB_STATUS_INPUT (1<<13)
-#define PB_STATUS_IOUT_POUT (1<<14)
-#define PB_STATUS_VOUT (1<<15)
-
-/*
- * STATUS_IOUT
- */
-#define PB_POUT_OP_WARNING (1<<0)
-#define PB_POUT_OP_FAULT (1<<1)
-#define PB_POWER_LIMITING (1<<2)
-#define PB_CURRENT_SHARE_FAULT (1<<3)
-#define PB_IOUT_UC_FAULT (1<<4)
-#define PB_IOUT_OC_WARNING (1<<5)
-#define PB_IOUT_OC_LV_FAULT (1<<6)
-#define PB_IOUT_OC_FAULT (1<<7)
-
-/*
- * STATUS_VOUT, STATUS_INPUT
- */
-#define PB_VOLTAGE_UV_FAULT (1<<4)
-#define PB_VOLTAGE_UV_WARNING (1<<5)
-#define PB_VOLTAGE_OV_WARNING (1<<6)
-#define PB_VOLTAGE_OV_FAULT (1<<7)
-
-/*
- * STATUS_INPUT
- */
-#define PB_PIN_OP_WARNING (1<<0)
-#define PB_IIN_OC_WARNING (1<<1)
-#define PB_IIN_OC_FAULT (1<<2)
-
-/*
- * STATUS_TEMPERATURE
- */
-#define PB_TEMP_UT_FAULT (1<<4)
-#define PB_TEMP_UT_WARNING (1<<5)
-#define PB_TEMP_OT_WARNING (1<<6)
-#define PB_TEMP_OT_FAULT (1<<7)
-
-/*
- * STATUS_FAN
- */
-#define PB_FAN_AIRFLOW_WARNING (1<<0)
-#define PB_FAN_AIRFLOW_FAULT (1<<1)
-#define PB_FAN_FAN2_SPEED_OVERRIDE (1<<2)
-#define PB_FAN_FAN1_SPEED_OVERRIDE (1<<3)
-#define PB_FAN_FAN2_WARNING (1<<4)
-#define PB_FAN_FAN1_WARNING (1<<5)
-#define PB_FAN_FAN2_FAULT (1<<6)
-#define PB_FAN_FAN1_FAULT (1<<7)
-
-/*
- * CML_FAULT_STATUS
- */
-#define PB_CML_FAULT_OTHER_MEM_LOGIC (1<<0)
-#define PB_CML_FAULT_OTHER_COMM (1<<1)
-#define PB_CML_FAULT_PROCESSOR (1<<3)
-#define PB_CML_FAULT_MEMORY (1<<4)
-#define PB_CML_FAULT_PACKET_ERROR (1<<5)
-#define PB_CML_FAULT_INVALID_DATA (1<<6)
-#define PB_CML_FAULT_INVALID_COMMAND (1<<7)
-
-enum pmbus_sensor_classes {
- PSC_VOLTAGE_IN = 0,
- PSC_VOLTAGE_OUT,
- PSC_CURRENT_IN,
- PSC_CURRENT_OUT,
- PSC_POWER,
- PSC_TEMPERATURE,
- PSC_FAN,
- PSC_NUM_CLASSES /* Number of power sensor classes */
-};
-
-#define PMBUS_PAGES 32 /* Per PMBus specification */
-
-/* Functionality bit mask */
-#define PMBUS_HAVE_VIN (1 << 0)
-#define PMBUS_HAVE_VCAP (1 << 1)
-#define PMBUS_HAVE_VOUT (1 << 2)
-#define PMBUS_HAVE_IIN (1 << 3)
-#define PMBUS_HAVE_IOUT (1 << 4)
-#define PMBUS_HAVE_PIN (1 << 5)
-#define PMBUS_HAVE_POUT (1 << 6)
-#define PMBUS_HAVE_FAN12 (1 << 7)
-#define PMBUS_HAVE_FAN34 (1 << 8)
-#define PMBUS_HAVE_TEMP (1 << 9)
-#define PMBUS_HAVE_TEMP2 (1 << 10)
-#define PMBUS_HAVE_TEMP3 (1 << 11)
-#define PMBUS_HAVE_STATUS_VOUT (1 << 12)
-#define PMBUS_HAVE_STATUS_IOUT (1 << 13)
-#define PMBUS_HAVE_STATUS_INPUT (1 << 14)
-#define PMBUS_HAVE_STATUS_TEMP (1 << 15)
-#define PMBUS_HAVE_STATUS_FAN12 (1 << 16)
-#define PMBUS_HAVE_STATUS_FAN34 (1 << 17)
-
-struct pmbus_driver_info {
- int pages; /* Total number of pages */
- bool direct[PSC_NUM_CLASSES];
- /* true if device uses direct data format
- for the given sensor class */
- /*
- * Support one set of coefficients for each sensor type
- * Used for chips providing data in direct mode.
- */
- int m[PSC_NUM_CLASSES]; /* mantissa for direct data format */
- int b[PSC_NUM_CLASSES]; /* offset */
- int R[PSC_NUM_CLASSES]; /* exponent */
-
- u32 func[PMBUS_PAGES]; /* Functionality, per page */
- /*
- * The following functions map manufacturing specific register values
- * to PMBus standard register values. Specify only if mapping is
- * necessary.
- */
- int (*read_byte_data)(struct i2c_client *client, int page, int reg);
- /*
- * The identify function determines supported PMBus functionality.
- * This function is only necessary if a chip driver supports multiple
- * chips, and the chip functionality is not pre-determined.
- */
- int (*identify)(struct i2c_client *client,
- struct pmbus_driver_info *info);
-};
-
-/* Function declarations */
-
-int pmbus_set_page(struct i2c_client *client, u8 page);
-int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg);
-void pmbus_clear_faults(struct i2c_client *client);
-bool pmbus_check_byte_register(struct i2c_client *client, int page, int reg);
-bool pmbus_check_word_register(struct i2c_client *client, int page, int reg);
-int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
- struct pmbus_driver_info *info);
-int pmbus_do_remove(struct i2c_client *client);
-const struct pmbus_driver_info *pmbus_get_driver_info(struct i2c_client
- *client);
-
-#endif /* PMBUS_H */
--- /dev/null
+#
+# PMBus chip drivers configuration
+#
+
+menuconfig PMBUS
+ tristate "PMBus support"
+ depends on I2C && EXPERIMENTAL
+ default n
+ help
+ Say yes here if you want to enable PMBus support.
+
+ This driver can also be built as a module. If so, the module will
+ be called pmbus_core.
+
+if PMBUS
+
+config SENSORS_PMBUS
+ tristate "Generic PMBus devices"
+ default y
+ help
+ If you say yes here you get hardware monitoring support for generic
+ PMBus devices, including but not limited to BMR450, BMR451, BMR453,
+ BMR454, and LTC2978.
+
+ This driver can also be built as a module. If so, the module will
+ be called pmbus.
+
+config SENSORS_ADM1275
+ tristate "Analog Devices ADM1275"
+ default n
+ help
+ If you say yes here you get hardware monitoring support for Analog
+ Devices ADM1275 Hot-Swap Controller and Digital Power Monitor.
+
+ This driver can also be built as a module. If so, the module will
+ be called adm1275.
+
+config SENSORS_MAX16064
+ tristate "Maxim MAX16064"
+ default n
+ help
+ If you say yes here you get hardware monitoring support for Maxim
+ MAX16064.
+
+ This driver can also be built as a module. If so, the module will
+ be called max16064.
+
+config SENSORS_MAX34440
+ tristate "Maxim MAX34440/MAX34441"
+ default n
+ help
+ If you say yes here you get hardware monitoring support for Maxim
+ MAX34440 and MAX34441.
+
+ This driver can also be built as a module. If so, the module will
+ be called max34440.
+
+config SENSORS_MAX8688
+ tristate "Maxim MAX8688"
+ default n
+ help
+ If you say yes here you get hardware monitoring support for Maxim
+ MAX8688.
+
+ This driver can also be built as a module. If so, the module will
+ be called max8688.
+
+config SENSORS_UCD9000
+ tristate "TI UCD90120, UCD90124, UCD9090, UCD90910"
+ default n
+ help
+ If you say yes here you get hardware monitoring support for TI
+ UCD90120, UCD90124, UCD9090, UCD90910 Sequencer and System Health
+ Controllers.
+
+ This driver can also be built as a module. If so, the module will
+ be called ucd9000.
+
+config SENSORS_UCD9200
+ tristate "TI UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, UCD9248"
+ default n
+ help
+ If you say yes here you get hardware monitoring support for TI
+ UCD9220, UCD9222, UCD9224, UCD9240, UCD9244, UCD9246, and UCD9248
+ Digital PWM System Controllers.
+
+ This driver can also be built as a module. If so, the module will
+ be called ucd9200.
+
+endif # PMBUS
--- /dev/null
+#
+# Makefile for PMBus chip drivers.
+#
+
+obj-$(CONFIG_PMBUS) += pmbus_core.o
+obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o
+obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
+obj-$(CONFIG_SENSORS_MAX16064) += max16064.o
+obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
+obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
+obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o
+obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o
--- /dev/null
+/*
+ * Hardware monitoring driver for Analog Devices ADM1275 Hot-Swap Controller
+ * and Digital Power Monitor
+ *
+ * Copyright (c) 2011 Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+#define ADM1275_PMON_CONFIG 0xd4
+
+#define ADM1275_VIN_VOUT_SELECT (1 << 6)
+#define ADM1275_VRANGE (1 << 5)
+
+static int adm1275_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int config;
+ int ret;
+ struct pmbus_driver_info *info;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_READ_BYTE_DATA))
+ return -ENODEV;
+
+ info = kzalloc(sizeof(struct pmbus_driver_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG);
+ if (config < 0) {
+ ret = config;
+ goto err_mem;
+ }
+
+ info->pages = 1;
+ info->direct[PSC_VOLTAGE_IN] = true;
+ info->direct[PSC_VOLTAGE_OUT] = true;
+ info->direct[PSC_CURRENT_OUT] = true;
+ info->m[PSC_CURRENT_OUT] = 807;
+ info->b[PSC_CURRENT_OUT] = 20475;
+ info->R[PSC_CURRENT_OUT] = -1;
+ info->func[0] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
+
+ if (config & ADM1275_VRANGE) {
+ info->m[PSC_VOLTAGE_IN] = 19199;
+ info->b[PSC_VOLTAGE_IN] = 0;
+ info->R[PSC_VOLTAGE_IN] = -2;
+ info->m[PSC_VOLTAGE_OUT] = 19199;
+ info->b[PSC_VOLTAGE_OUT] = 0;
+ info->R[PSC_VOLTAGE_OUT] = -2;
+ } else {
+ info->m[PSC_VOLTAGE_IN] = 6720;
+ info->b[PSC_VOLTAGE_IN] = 0;
+ info->R[PSC_VOLTAGE_IN] = -1;
+ info->m[PSC_VOLTAGE_OUT] = 6720;
+ info->b[PSC_VOLTAGE_OUT] = 0;
+ info->R[PSC_VOLTAGE_OUT] = -1;
+ }
+
+ if (config & ADM1275_VIN_VOUT_SELECT)
+ info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
+ else
+ info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT;
+
+ ret = pmbus_do_probe(client, id, info);
+ if (ret)
+ goto err_mem;
+ return 0;
+
+err_mem:
+ kfree(info);
+ return ret;
+}
+
+static int adm1275_remove(struct i2c_client *client)
+{
+ const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
+ int ret;
+
+ ret = pmbus_do_remove(client);
+ kfree(info);
+ return ret;
+}
+
+static const struct i2c_device_id adm1275_id[] = {
+ {"adm1275", 0},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, adm1275_id);
+
+static struct i2c_driver adm1275_driver = {
+ .driver = {
+ .name = "adm1275",
+ },
+ .probe = adm1275_probe,
+ .remove = adm1275_remove,
+ .id_table = adm1275_id,
+};
+
+static int __init adm1275_init(void)
+{
+ return i2c_add_driver(&adm1275_driver);
+}
+
+static void __exit adm1275_exit(void)
+{
+ i2c_del_driver(&adm1275_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275");
+MODULE_LICENSE("GPL");
+module_init(adm1275_init);
+module_exit(adm1275_exit);
--- /dev/null
+/*
+ * Hardware monitoring driver for Maxim MAX16064
+ *
+ * Copyright (c) 2011 Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+static struct pmbus_driver_info max16064_info = {
+ .pages = 4,
+ .direct[PSC_VOLTAGE_IN] = true,
+ .direct[PSC_VOLTAGE_OUT] = true,
+ .direct[PSC_TEMPERATURE] = true,
+ .m[PSC_VOLTAGE_IN] = 19995,
+ .b[PSC_VOLTAGE_IN] = 0,
+ .R[PSC_VOLTAGE_IN] = -1,
+ .m[PSC_VOLTAGE_OUT] = 19995,
+ .b[PSC_VOLTAGE_OUT] = 0,
+ .R[PSC_VOLTAGE_OUT] = -1,
+ .m[PSC_TEMPERATURE] = -7612,
+ .b[PSC_TEMPERATURE] = 335,
+ .R[PSC_TEMPERATURE] = -3,
+ .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP
+ | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP,
+ .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
+ .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
+ .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
+};
+
+static int max16064_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ return pmbus_do_probe(client, id, &max16064_info);
+}
+
+static int max16064_remove(struct i2c_client *client)
+{
+ return pmbus_do_remove(client);
+}
+
+static const struct i2c_device_id max16064_id[] = {
+ {"max16064", 0},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, max16064_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver max16064_driver = {
+ .driver = {
+ .name = "max16064",
+ },
+ .probe = max16064_probe,
+ .remove = max16064_remove,
+ .id_table = max16064_id,
+};
+
+static int __init max16064_init(void)
+{
+ return i2c_add_driver(&max16064_driver);
+}
+
+static void __exit max16064_exit(void)
+{
+ i2c_del_driver(&max16064_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for Maxim MAX16064");
+MODULE_LICENSE("GPL");
+module_init(max16064_init);
+module_exit(max16064_exit);
--- /dev/null
+/*
+ * Hardware monitoring driver for Maxim MAX34440/MAX34441
+ *
+ * Copyright (c) 2011 Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+enum chips { max34440, max34441 };
+
+#define MAX34440_STATUS_OC_WARN (1 << 0)
+#define MAX34440_STATUS_OC_FAULT (1 << 1)
+#define MAX34440_STATUS_OT_FAULT (1 << 5)
+#define MAX34440_STATUS_OT_WARN (1 << 6)
+
+static int max34440_read_byte_data(struct i2c_client *client, int page, int reg)
+{
+ int ret;
+ int mfg_status;
+
+ ret = pmbus_set_page(client, page);
+ if (ret < 0)
+ return ret;
+
+ switch (reg) {
+ case PMBUS_STATUS_IOUT:
+ mfg_status = pmbus_read_word_data(client, 0,
+ PMBUS_STATUS_MFR_SPECIFIC);
+ if (mfg_status < 0)
+ return mfg_status;
+ if (mfg_status & MAX34440_STATUS_OC_WARN)
+ ret |= PB_IOUT_OC_WARNING;
+ if (mfg_status & MAX34440_STATUS_OC_FAULT)
+ ret |= PB_IOUT_OC_FAULT;
+ break;
+ case PMBUS_STATUS_TEMPERATURE:
+ mfg_status = pmbus_read_word_data(client, 0,
+ PMBUS_STATUS_MFR_SPECIFIC);
+ if (mfg_status < 0)
+ return mfg_status;
+ if (mfg_status & MAX34440_STATUS_OT_WARN)
+ ret |= PB_TEMP_OT_WARNING;
+ if (mfg_status & MAX34440_STATUS_OT_FAULT)
+ ret |= PB_TEMP_OT_FAULT;
+ break;
+ default:
+ ret = -ENODATA;
+ break;
+ }
+ return ret;
+}
+
+static struct pmbus_driver_info max34440_info[] = {
+ [max34440] = {
+ .pages = 14,
+ .direct[PSC_VOLTAGE_IN] = true,
+ .direct[PSC_VOLTAGE_OUT] = true,
+ .direct[PSC_TEMPERATURE] = true,
+ .direct[PSC_CURRENT_OUT] = true,
+ .m[PSC_VOLTAGE_IN] = 1,
+ .b[PSC_VOLTAGE_IN] = 0,
+ .R[PSC_VOLTAGE_IN] = 3, /* R = 0 in datasheet reflects mV */
+ .m[PSC_VOLTAGE_OUT] = 1,
+ .b[PSC_VOLTAGE_OUT] = 0,
+ .R[PSC_VOLTAGE_OUT] = 3, /* R = 0 in datasheet reflects mV */
+ .m[PSC_CURRENT_OUT] = 1,
+ .b[PSC_CURRENT_OUT] = 0,
+ .R[PSC_CURRENT_OUT] = 3, /* R = 0 in datasheet reflects mA */
+ .m[PSC_TEMPERATURE] = 1,
+ .b[PSC_TEMPERATURE] = 0,
+ .R[PSC_TEMPERATURE] = 2,
+ .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .read_byte_data = max34440_read_byte_data,
+ },
+ [max34441] = {
+ .pages = 12,
+ .direct[PSC_VOLTAGE_IN] = true,
+ .direct[PSC_VOLTAGE_OUT] = true,
+ .direct[PSC_TEMPERATURE] = true,
+ .direct[PSC_CURRENT_OUT] = true,
+ .direct[PSC_FAN] = true,
+ .m[PSC_VOLTAGE_IN] = 1,
+ .b[PSC_VOLTAGE_IN] = 0,
+ .R[PSC_VOLTAGE_IN] = 3,
+ .m[PSC_VOLTAGE_OUT] = 1,
+ .b[PSC_VOLTAGE_OUT] = 0,
+ .R[PSC_VOLTAGE_OUT] = 3,
+ .m[PSC_CURRENT_OUT] = 1,
+ .b[PSC_CURRENT_OUT] = 0,
+ .R[PSC_CURRENT_OUT] = 3,
+ .m[PSC_TEMPERATURE] = 1,
+ .b[PSC_TEMPERATURE] = 0,
+ .R[PSC_TEMPERATURE] = 2,
+ .m[PSC_FAN] = 1,
+ .b[PSC_FAN] = 0,
+ .R[PSC_FAN] = 0,
+ .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+ | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+ .func[5] = PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12,
+ .func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+ .read_byte_data = max34440_read_byte_data,
+ },
+};
+
+static int max34440_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ return pmbus_do_probe(client, id, &max34440_info[id->driver_data]);
+}
+
+static int max34440_remove(struct i2c_client *client)
+{
+ return pmbus_do_remove(client);
+}
+
+static const struct i2c_device_id max34440_id[] = {
+ {"max34440", max34440},
+ {"max34441", max34441},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, max34440_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver max34440_driver = {
+ .driver = {
+ .name = "max34440",
+ },
+ .probe = max34440_probe,
+ .remove = max34440_remove,
+ .id_table = max34440_id,
+};
+
+static int __init max34440_init(void)
+{
+ return i2c_add_driver(&max34440_driver);
+}
+
+static void __exit max34440_exit(void)
+{
+ i2c_del_driver(&max34440_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441");
+MODULE_LICENSE("GPL");
+module_init(max34440_init);
+module_exit(max34440_exit);
--- /dev/null
+/*
+ * Hardware monitoring driver for Maxim MAX8688
+ *
+ * Copyright (c) 2011 Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+#define MAX8688_MFG_STATUS 0xd8
+
+#define MAX8688_STATUS_OC_FAULT (1 << 4)
+#define MAX8688_STATUS_OV_FAULT (1 << 5)
+#define MAX8688_STATUS_OV_WARNING (1 << 8)
+#define MAX8688_STATUS_UV_FAULT (1 << 9)
+#define MAX8688_STATUS_UV_WARNING (1 << 10)
+#define MAX8688_STATUS_UC_FAULT (1 << 11)
+#define MAX8688_STATUS_OC_WARNING (1 << 12)
+#define MAX8688_STATUS_OT_FAULT (1 << 13)
+#define MAX8688_STATUS_OT_WARNING (1 << 14)
+
+static int max8688_read_byte_data(struct i2c_client *client, int page, int reg)
+{
+ int ret = 0;
+ int mfg_status;
+
+ if (page)
+ return -EINVAL;
+
+ switch (reg) {
+ case PMBUS_STATUS_VOUT:
+ mfg_status = pmbus_read_word_data(client, 0,
+ MAX8688_MFG_STATUS);
+ if (mfg_status < 0)
+ return mfg_status;
+ if (mfg_status & MAX8688_STATUS_UV_WARNING)
+ ret |= PB_VOLTAGE_UV_WARNING;
+ if (mfg_status & MAX8688_STATUS_UV_FAULT)
+ ret |= PB_VOLTAGE_UV_FAULT;
+ if (mfg_status & MAX8688_STATUS_OV_WARNING)
+ ret |= PB_VOLTAGE_OV_WARNING;
+ if (mfg_status & MAX8688_STATUS_OV_FAULT)
+ ret |= PB_VOLTAGE_OV_FAULT;
+ break;
+ case PMBUS_STATUS_IOUT:
+ mfg_status = pmbus_read_word_data(client, 0,
+ MAX8688_MFG_STATUS);
+ if (mfg_status < 0)
+ return mfg_status;
+ if (mfg_status & MAX8688_STATUS_UC_FAULT)
+ ret |= PB_IOUT_UC_FAULT;
+ if (mfg_status & MAX8688_STATUS_OC_WARNING)
+ ret |= PB_IOUT_OC_WARNING;
+ if (mfg_status & MAX8688_STATUS_OC_FAULT)
+ ret |= PB_IOUT_OC_FAULT;
+ break;
+ case PMBUS_STATUS_TEMPERATURE:
+ mfg_status = pmbus_read_word_data(client, 0,
+ MAX8688_MFG_STATUS);
+ if (mfg_status < 0)
+ return mfg_status;
+ if (mfg_status & MAX8688_STATUS_OT_WARNING)
+ ret |= PB_TEMP_OT_WARNING;
+ if (mfg_status & MAX8688_STATUS_OT_FAULT)
+ ret |= PB_TEMP_OT_FAULT;
+ break;
+ default:
+ ret = -ENODATA;
+ break;
+ }
+ return ret;
+}
+
+static struct pmbus_driver_info max8688_info = {
+ .pages = 1,
+ .direct[PSC_VOLTAGE_IN] = true,
+ .direct[PSC_VOLTAGE_OUT] = true,
+ .direct[PSC_TEMPERATURE] = true,
+ .direct[PSC_CURRENT_OUT] = true,
+ .m[PSC_VOLTAGE_IN] = 19995,
+ .b[PSC_VOLTAGE_IN] = 0,
+ .R[PSC_VOLTAGE_IN] = -1,
+ .m[PSC_VOLTAGE_OUT] = 19995,
+ .b[PSC_VOLTAGE_OUT] = 0,
+ .R[PSC_VOLTAGE_OUT] = -1,
+ .m[PSC_CURRENT_OUT] = 23109,
+ .b[PSC_CURRENT_OUT] = 0,
+ .R[PSC_CURRENT_OUT] = -2,
+ .m[PSC_TEMPERATURE] = -7612,
+ .b[PSC_TEMPERATURE] = 335,
+ .R[PSC_TEMPERATURE] = -3,
+ .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | PMBUS_HAVE_TEMP
+ | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
+ | PMBUS_HAVE_STATUS_TEMP,
+ .read_byte_data = max8688_read_byte_data,
+};
+
+static int max8688_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ return pmbus_do_probe(client, id, &max8688_info);
+}
+
+static int max8688_remove(struct i2c_client *client)
+{
+ return pmbus_do_remove(client);
+}
+
+static const struct i2c_device_id max8688_id[] = {
+ {"max8688", 0},
+ { }
+};
+
+MODULE_DEVICE_TABLE(i2c, max8688_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver max8688_driver = {
+ .driver = {
+ .name = "max8688",
+ },
+ .probe = max8688_probe,
+ .remove = max8688_remove,
+ .id_table = max8688_id,
+};
+
+static int __init max8688_init(void)
+{
+ return i2c_add_driver(&max8688_driver);
+}
+
+static void __exit max8688_exit(void)
+{
+ i2c_del_driver(&max8688_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for Maxim MAX8688");
+MODULE_LICENSE("GPL");
+module_init(max8688_init);
+module_exit(max8688_exit);
--- /dev/null
+/*
+ * Hardware monitoring driver for PMBus devices
+ *
+ * Copyright (c) 2010, 2011 Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+/*
+ * Find sensor groups and status registers on each page.
+ */
+static void pmbus_find_sensor_groups(struct i2c_client *client,
+ struct pmbus_driver_info *info)
+{
+ int page;
+
+ /* Sensors detected on page 0 only */
+ if (pmbus_check_word_register(client, 0, PMBUS_READ_VIN))
+ info->func[0] |= PMBUS_HAVE_VIN;
+ if (pmbus_check_word_register(client, 0, PMBUS_READ_VCAP))
+ info->func[0] |= PMBUS_HAVE_VCAP;
+ if (pmbus_check_word_register(client, 0, PMBUS_READ_IIN))
+ info->func[0] |= PMBUS_HAVE_IIN;
+ if (pmbus_check_word_register(client, 0, PMBUS_READ_PIN))
+ info->func[0] |= PMBUS_HAVE_PIN;
+ if (info->func[0]
+ && pmbus_check_byte_register(client, 0, PMBUS_STATUS_INPUT))
+ info->func[0] |= PMBUS_HAVE_STATUS_INPUT;
+ if (pmbus_check_byte_register(client, 0, PMBUS_FAN_CONFIG_12) &&
+ pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_1)) {
+ info->func[0] |= PMBUS_HAVE_FAN12;
+ if (pmbus_check_byte_register(client, 0, PMBUS_STATUS_FAN_12))
+ info->func[0] |= PMBUS_HAVE_STATUS_FAN12;
+ }
+ if (pmbus_check_byte_register(client, 0, PMBUS_FAN_CONFIG_34) &&
+ pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_3)) {
+ info->func[0] |= PMBUS_HAVE_FAN34;
+ if (pmbus_check_byte_register(client, 0, PMBUS_STATUS_FAN_34))
+ info->func[0] |= PMBUS_HAVE_STATUS_FAN34;
+ }
+ if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_1))
+ info->func[0] |= PMBUS_HAVE_TEMP;
+ if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_2))
+ info->func[0] |= PMBUS_HAVE_TEMP2;
+ if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_3))
+ info->func[0] |= PMBUS_HAVE_TEMP3;
+ if (info->func[0] & (PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2
+ | PMBUS_HAVE_TEMP3)
+ && pmbus_check_byte_register(client, 0,
+ PMBUS_STATUS_TEMPERATURE))
+ info->func[0] |= PMBUS_HAVE_STATUS_TEMP;
+
+ /* Sensors detected on all pages */
+ for (page = 0; page < info->pages; page++) {
+ if (pmbus_check_word_register(client, page, PMBUS_READ_VOUT)) {
+ info->func[page] |= PMBUS_HAVE_VOUT;
+ if (pmbus_check_byte_register(client, page,
+ PMBUS_STATUS_VOUT))
+ info->func[page] |= PMBUS_HAVE_STATUS_VOUT;
+ }
+ if (pmbus_check_word_register(client, page, PMBUS_READ_IOUT)) {
+ info->func[page] |= PMBUS_HAVE_IOUT;
+ if (pmbus_check_byte_register(client, 0,
+ PMBUS_STATUS_IOUT))
+ info->func[page] |= PMBUS_HAVE_STATUS_IOUT;
+ }
+ if (pmbus_check_word_register(client, page, PMBUS_READ_POUT))
+ info->func[page] |= PMBUS_HAVE_POUT;
+ }
+}
+
+/*
+ * Identify chip parameters.
+ */
+static int pmbus_identify(struct i2c_client *client,
+ struct pmbus_driver_info *info)
+{
+ if (!info->pages) {
+ /*
+ * Check if the PAGE command is supported. If it is,
+ * keep setting the page number until it fails or until the
+ * maximum number of pages has been reached. Assume that
+ * this is the number of pages supported by the chip.
+ */
+ if (pmbus_check_byte_register(client, 0, PMBUS_PAGE)) {
+ int page;
+
+ for (page = 1; page < PMBUS_PAGES; page++) {
+ if (pmbus_set_page(client, page) < 0)
+ break;
+ }
+ pmbus_set_page(client, 0);
+ info->pages = page;
+ } else {
+ info->pages = 1;
+ }
+ }
+
+ /*
+ * We should check if the COEFFICIENTS register is supported.
+ * If it is, and the chip is configured for direct mode, we can read
+ * the coefficients from the chip, one set per group of sensor
+ * registers.
+ *
+ * To do this, we will need access to a chip which actually supports the
+ * COEFFICIENTS command, since the command is too complex to implement
+ * without testing it.
+ */
+
+ /* Try to find sensor groups */
+ pmbus_find_sensor_groups(client, info);
+
+ return 0;
+}
+
+static int pmbus_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct pmbus_driver_info *info;
+ int ret;
+
+ info = kzalloc(sizeof(struct pmbus_driver_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->pages = id->driver_data;
+ info->identify = pmbus_identify;
+
+ ret = pmbus_do_probe(client, id, info);
+ if (ret < 0)
+ goto out;
+ return 0;
+
+out:
+ kfree(info);
+ return ret;
+}
+
+static int pmbus_remove(struct i2c_client *client)
+{
+ int ret;
+ const struct pmbus_driver_info *info;
+
+ info = pmbus_get_driver_info(client);
+ ret = pmbus_do_remove(client);
+ kfree(info);
+ return ret;
+}
+
+/*
+ * Use driver_data to set the number of pages supported by the chip.
+ */
+static const struct i2c_device_id pmbus_id[] = {
+ {"bmr450", 1},
+ {"bmr451", 1},
+ {"bmr453", 1},
+ {"bmr454", 1},
+ {"ltc2978", 8},
+ {"pmbus", 0},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, pmbus_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver pmbus_driver = {
+ .driver = {
+ .name = "pmbus",
+ },
+ .probe = pmbus_probe,
+ .remove = pmbus_remove,
+ .id_table = pmbus_id,
+};
+
+static int __init pmbus_init(void)
+{
+ return i2c_add_driver(&pmbus_driver);
+}
+
+static void __exit pmbus_exit(void)
+{
+ i2c_del_driver(&pmbus_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("Generic PMBus driver");
+MODULE_LICENSE("GPL");
+module_init(pmbus_init);
+module_exit(pmbus_exit);
--- /dev/null
+/*
+ * pmbus.h - Common defines and structures for PMBus devices
+ *
+ * Copyright (c) 2010, 2011 Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef PMBUS_H
+#define PMBUS_H
+
+/*
+ * Registers
+ */
+#define PMBUS_PAGE 0x00
+#define PMBUS_OPERATION 0x01
+#define PMBUS_ON_OFF_CONFIG 0x02
+#define PMBUS_CLEAR_FAULTS 0x03
+#define PMBUS_PHASE 0x04
+
+#define PMBUS_CAPABILITY 0x19
+#define PMBUS_QUERY 0x1A
+
+#define PMBUS_VOUT_MODE 0x20
+#define PMBUS_VOUT_COMMAND 0x21
+#define PMBUS_VOUT_TRIM 0x22
+#define PMBUS_VOUT_CAL_OFFSET 0x23
+#define PMBUS_VOUT_MAX 0x24
+#define PMBUS_VOUT_MARGIN_HIGH 0x25
+#define PMBUS_VOUT_MARGIN_LOW 0x26
+#define PMBUS_VOUT_TRANSITION_RATE 0x27
+#define PMBUS_VOUT_DROOP 0x28
+#define PMBUS_VOUT_SCALE_LOOP 0x29
+#define PMBUS_VOUT_SCALE_MONITOR 0x2A
+
+#define PMBUS_COEFFICIENTS 0x30
+#define PMBUS_POUT_MAX 0x31
+
+#define PMBUS_FAN_CONFIG_12 0x3A
+#define PMBUS_FAN_COMMAND_1 0x3B
+#define PMBUS_FAN_COMMAND_2 0x3C
+#define PMBUS_FAN_CONFIG_34 0x3D
+#define PMBUS_FAN_COMMAND_3 0x3E
+#define PMBUS_FAN_COMMAND_4 0x3F
+
+#define PMBUS_VOUT_OV_FAULT_LIMIT 0x40
+#define PMBUS_VOUT_OV_FAULT_RESPONSE 0x41
+#define PMBUS_VOUT_OV_WARN_LIMIT 0x42
+#define PMBUS_VOUT_UV_WARN_LIMIT 0x43
+#define PMBUS_VOUT_UV_FAULT_LIMIT 0x44
+#define PMBUS_VOUT_UV_FAULT_RESPONSE 0x45
+#define PMBUS_IOUT_OC_FAULT_LIMIT 0x46
+#define PMBUS_IOUT_OC_FAULT_RESPONSE 0x47
+#define PMBUS_IOUT_OC_LV_FAULT_LIMIT 0x48
+#define PMBUS_IOUT_OC_LV_FAULT_RESPONSE 0x49
+#define PMBUS_IOUT_OC_WARN_LIMIT 0x4A
+#define PMBUS_IOUT_UC_FAULT_LIMIT 0x4B
+#define PMBUS_IOUT_UC_FAULT_RESPONSE 0x4C
+
+#define PMBUS_OT_FAULT_LIMIT 0x4F
+#define PMBUS_OT_FAULT_RESPONSE 0x50
+#define PMBUS_OT_WARN_LIMIT 0x51
+#define PMBUS_UT_WARN_LIMIT 0x52
+#define PMBUS_UT_FAULT_LIMIT 0x53
+#define PMBUS_UT_FAULT_RESPONSE 0x54
+#define PMBUS_VIN_OV_FAULT_LIMIT 0x55
+#define PMBUS_VIN_OV_FAULT_RESPONSE 0x56
+#define PMBUS_VIN_OV_WARN_LIMIT 0x57
+#define PMBUS_VIN_UV_WARN_LIMIT 0x58
+#define PMBUS_VIN_UV_FAULT_LIMIT 0x59
+
+#define PMBUS_IIN_OC_FAULT_LIMIT 0x5B
+#define PMBUS_IIN_OC_WARN_LIMIT 0x5D
+
+#define PMBUS_POUT_OP_FAULT_LIMIT 0x68
+#define PMBUS_POUT_OP_WARN_LIMIT 0x6A
+#define PMBUS_PIN_OP_WARN_LIMIT 0x6B
+
+#define PMBUS_STATUS_BYTE 0x78
+#define PMBUS_STATUS_WORD 0x79
+#define PMBUS_STATUS_VOUT 0x7A
+#define PMBUS_STATUS_IOUT 0x7B
+#define PMBUS_STATUS_INPUT 0x7C
+#define PMBUS_STATUS_TEMPERATURE 0x7D
+#define PMBUS_STATUS_CML 0x7E
+#define PMBUS_STATUS_OTHER 0x7F
+#define PMBUS_STATUS_MFR_SPECIFIC 0x80
+#define PMBUS_STATUS_FAN_12 0x81
+#define PMBUS_STATUS_FAN_34 0x82
+
+#define PMBUS_READ_VIN 0x88
+#define PMBUS_READ_IIN 0x89
+#define PMBUS_READ_VCAP 0x8A
+#define PMBUS_READ_VOUT 0x8B
+#define PMBUS_READ_IOUT 0x8C
+#define PMBUS_READ_TEMPERATURE_1 0x8D
+#define PMBUS_READ_TEMPERATURE_2 0x8E
+#define PMBUS_READ_TEMPERATURE_3 0x8F
+#define PMBUS_READ_FAN_SPEED_1 0x90
+#define PMBUS_READ_FAN_SPEED_2 0x91
+#define PMBUS_READ_FAN_SPEED_3 0x92
+#define PMBUS_READ_FAN_SPEED_4 0x93
+#define PMBUS_READ_DUTY_CYCLE 0x94
+#define PMBUS_READ_FREQUENCY 0x95
+#define PMBUS_READ_POUT 0x96
+#define PMBUS_READ_PIN 0x97
+
+#define PMBUS_REVISION 0x98
+#define PMBUS_MFR_ID 0x99
+#define PMBUS_MFR_MODEL 0x9A
+#define PMBUS_MFR_REVISION 0x9B
+#define PMBUS_MFR_LOCATION 0x9C
+#define PMBUS_MFR_DATE 0x9D
+#define PMBUS_MFR_SERIAL 0x9E
+
+/*
+ * CAPABILITY
+ */
+#define PB_CAPABILITY_SMBALERT (1<<4)
+#define PB_CAPABILITY_ERROR_CHECK (1<<7)
+
+/*
+ * VOUT_MODE
+ */
+#define PB_VOUT_MODE_MODE_MASK 0xe0
+#define PB_VOUT_MODE_PARAM_MASK 0x1f
+
+#define PB_VOUT_MODE_LINEAR 0x00
+#define PB_VOUT_MODE_VID 0x20
+#define PB_VOUT_MODE_DIRECT 0x40
+
+/*
+ * Fan configuration
+ */
+#define PB_FAN_2_PULSE_MASK ((1 << 0) | (1 << 1))
+#define PB_FAN_2_RPM (1 << 2)
+#define PB_FAN_2_INSTALLED (1 << 3)
+#define PB_FAN_1_PULSE_MASK ((1 << 4) | (1 << 5))
+#define PB_FAN_1_RPM (1 << 6)
+#define PB_FAN_1_INSTALLED (1 << 7)
+
+/*
+ * STATUS_BYTE, STATUS_WORD (lower)
+ */
+#define PB_STATUS_NONE_ABOVE (1<<0)
+#define PB_STATUS_CML (1<<1)
+#define PB_STATUS_TEMPERATURE (1<<2)
+#define PB_STATUS_VIN_UV (1<<3)
+#define PB_STATUS_IOUT_OC (1<<4)
+#define PB_STATUS_VOUT_OV (1<<5)
+#define PB_STATUS_OFF (1<<6)
+#define PB_STATUS_BUSY (1<<7)
+
+/*
+ * STATUS_WORD (upper)
+ */
+#define PB_STATUS_UNKNOWN (1<<8)
+#define PB_STATUS_OTHER (1<<9)
+#define PB_STATUS_FANS (1<<10)
+#define PB_STATUS_POWER_GOOD_N (1<<11)
+#define PB_STATUS_WORD_MFR (1<<12)
+#define PB_STATUS_INPUT (1<<13)
+#define PB_STATUS_IOUT_POUT (1<<14)
+#define PB_STATUS_VOUT (1<<15)
+
+/*
+ * STATUS_IOUT
+ */
+#define PB_POUT_OP_WARNING (1<<0)
+#define PB_POUT_OP_FAULT (1<<1)
+#define PB_POWER_LIMITING (1<<2)
+#define PB_CURRENT_SHARE_FAULT (1<<3)
+#define PB_IOUT_UC_FAULT (1<<4)
+#define PB_IOUT_OC_WARNING (1<<5)
+#define PB_IOUT_OC_LV_FAULT (1<<6)
+#define PB_IOUT_OC_FAULT (1<<7)
+
+/*
+ * STATUS_VOUT, STATUS_INPUT
+ */
+#define PB_VOLTAGE_UV_FAULT (1<<4)
+#define PB_VOLTAGE_UV_WARNING (1<<5)
+#define PB_VOLTAGE_OV_WARNING (1<<6)
+#define PB_VOLTAGE_OV_FAULT (1<<7)
+
+/*
+ * STATUS_INPUT
+ */
+#define PB_PIN_OP_WARNING (1<<0)
+#define PB_IIN_OC_WARNING (1<<1)
+#define PB_IIN_OC_FAULT (1<<2)
+
+/*
+ * STATUS_TEMPERATURE
+ */
+#define PB_TEMP_UT_FAULT (1<<4)
+#define PB_TEMP_UT_WARNING (1<<5)
+#define PB_TEMP_OT_WARNING (1<<6)
+#define PB_TEMP_OT_FAULT (1<<7)
+
+/*
+ * STATUS_FAN
+ */
+#define PB_FAN_AIRFLOW_WARNING (1<<0)
+#define PB_FAN_AIRFLOW_FAULT (1<<1)
+#define PB_FAN_FAN2_SPEED_OVERRIDE (1<<2)
+#define PB_FAN_FAN1_SPEED_OVERRIDE (1<<3)
+#define PB_FAN_FAN2_WARNING (1<<4)
+#define PB_FAN_FAN1_WARNING (1<<5)
+#define PB_FAN_FAN2_FAULT (1<<6)
+#define PB_FAN_FAN1_FAULT (1<<7)
+
+/*
+ * CML_FAULT_STATUS
+ */
+#define PB_CML_FAULT_OTHER_MEM_LOGIC (1<<0)
+#define PB_CML_FAULT_OTHER_COMM (1<<1)
+#define PB_CML_FAULT_PROCESSOR (1<<3)
+#define PB_CML_FAULT_MEMORY (1<<4)
+#define PB_CML_FAULT_PACKET_ERROR (1<<5)
+#define PB_CML_FAULT_INVALID_DATA (1<<6)
+#define PB_CML_FAULT_INVALID_COMMAND (1<<7)
+
+enum pmbus_sensor_classes {
+ PSC_VOLTAGE_IN = 0,
+ PSC_VOLTAGE_OUT,
+ PSC_CURRENT_IN,
+ PSC_CURRENT_OUT,
+ PSC_POWER,
+ PSC_TEMPERATURE,
+ PSC_FAN,
+ PSC_NUM_CLASSES /* Number of power sensor classes */
+};
+
+#define PMBUS_PAGES 32 /* Per PMBus specification */
+
+/* Functionality bit mask */
+#define PMBUS_HAVE_VIN (1 << 0)
+#define PMBUS_HAVE_VCAP (1 << 1)
+#define PMBUS_HAVE_VOUT (1 << 2)
+#define PMBUS_HAVE_IIN (1 << 3)
+#define PMBUS_HAVE_IOUT (1 << 4)
+#define PMBUS_HAVE_PIN (1 << 5)
+#define PMBUS_HAVE_POUT (1 << 6)
+#define PMBUS_HAVE_FAN12 (1 << 7)
+#define PMBUS_HAVE_FAN34 (1 << 8)
+#define PMBUS_HAVE_TEMP (1 << 9)
+#define PMBUS_HAVE_TEMP2 (1 << 10)
+#define PMBUS_HAVE_TEMP3 (1 << 11)
+#define PMBUS_HAVE_STATUS_VOUT (1 << 12)
+#define PMBUS_HAVE_STATUS_IOUT (1 << 13)
+#define PMBUS_HAVE_STATUS_INPUT (1 << 14)
+#define PMBUS_HAVE_STATUS_TEMP (1 << 15)
+#define PMBUS_HAVE_STATUS_FAN12 (1 << 16)
+#define PMBUS_HAVE_STATUS_FAN34 (1 << 17)
+
+struct pmbus_driver_info {
+ int pages; /* Total number of pages */
+ bool direct[PSC_NUM_CLASSES];
+ /* true if device uses direct data format
+ for the given sensor class */
+ /*
+ * Support one set of coefficients for each sensor type
+ * Used for chips providing data in direct mode.
+ */
+ int m[PSC_NUM_CLASSES]; /* mantissa for direct data format */
+ int b[PSC_NUM_CLASSES]; /* offset */
+ int R[PSC_NUM_CLASSES]; /* exponent */
+
+ u32 func[PMBUS_PAGES]; /* Functionality, per page */
+ /*
+ * The following functions map manufacturing specific register values
+ * to PMBus standard register values. Specify only if mapping is
+ * necessary.
+ */
+ int (*read_byte_data)(struct i2c_client *client, int page, int reg);
+ /*
+ * The identify function determines supported PMBus functionality.
+ * This function is only necessary if a chip driver supports multiple
+ * chips, and the chip functionality is not pre-determined.
+ */
+ int (*identify)(struct i2c_client *client,
+ struct pmbus_driver_info *info);
+};
+
+/* Function declarations */
+
+int pmbus_set_page(struct i2c_client *client, u8 page);
+int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg);
+void pmbus_clear_faults(struct i2c_client *client);
+bool pmbus_check_byte_register(struct i2c_client *client, int page, int reg);
+bool pmbus_check_word_register(struct i2c_client *client, int page, int reg);
+int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
+ struct pmbus_driver_info *info);
+int pmbus_do_remove(struct i2c_client *client);
+const struct pmbus_driver_info *pmbus_get_driver_info(struct i2c_client
+ *client);
+
+#endif /* PMBUS_H */
--- /dev/null
+/*
+ * Hardware monitoring driver for PMBus devices
+ *
+ * Copyright (c) 2010, 2011 Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/delay.h>
+#include <linux/i2c/pmbus.h>
+#include "pmbus.h"
+
+/*
+ * Constants needed to determine number of sensors, booleans, and labels.
+ */
+#define PMBUS_MAX_INPUT_SENSORS 11 /* 6*volt, 3*curr, 2*power */
+#define PMBUS_VOUT_SENSORS_PER_PAGE 5 /* input, min, max, lcrit,
+ crit */
+#define PMBUS_IOUT_SENSORS_PER_PAGE 4 /* input, min, max, crit */
+#define PMBUS_POUT_SENSORS_PER_PAGE 4 /* input, cap, max, crit */
+#define PMBUS_MAX_SENSORS_PER_FAN 1 /* input */
+#define PMBUS_MAX_SENSORS_PER_TEMP 5 /* input, min, max, lcrit,
+ crit */
+
+#define PMBUS_MAX_INPUT_BOOLEANS 7 /* v: min_alarm, max_alarm,
+ lcrit_alarm, crit_alarm;
+ c: alarm, crit_alarm;
+ p: crit_alarm */
+#define PMBUS_VOUT_BOOLEANS_PER_PAGE 4 /* min_alarm, max_alarm,
+ lcrit_alarm, crit_alarm */
+#define PMBUS_IOUT_BOOLEANS_PER_PAGE 3 /* alarm, lcrit_alarm,
+ crit_alarm */
+#define PMBUS_POUT_BOOLEANS_PER_PAGE 2 /* alarm, crit_alarm */
+#define PMBUS_MAX_BOOLEANS_PER_FAN 2 /* alarm, fault */
+#define PMBUS_MAX_BOOLEANS_PER_TEMP 4 /* min_alarm, max_alarm,
+ lcrit_alarm, crit_alarm */
+
+#define PMBUS_MAX_INPUT_LABELS 4 /* vin, vcap, iin, pin */
+
+/*
+ * status, status_vout, status_iout, status_fans, status_fan34, and status_temp
+ * are paged. status_input is unpaged.
+ */
+#define PB_NUM_STATUS_REG (PMBUS_PAGES * 6 + 1)
+
+/*
+ * Index into status register array, per status register group
+ */
+#define PB_STATUS_BASE 0
+#define PB_STATUS_VOUT_BASE (PB_STATUS_BASE + PMBUS_PAGES)
+#define PB_STATUS_IOUT_BASE (PB_STATUS_VOUT_BASE + PMBUS_PAGES)
+#define PB_STATUS_FAN_BASE (PB_STATUS_IOUT_BASE + PMBUS_PAGES)
+#define PB_STATUS_FAN34_BASE (PB_STATUS_FAN_BASE + PMBUS_PAGES)
+#define PB_STATUS_INPUT_BASE (PB_STATUS_FAN34_BASE + PMBUS_PAGES)
+#define PB_STATUS_TEMP_BASE (PB_STATUS_INPUT_BASE + 1)
+
+struct pmbus_sensor {
+ char name[I2C_NAME_SIZE]; /* sysfs sensor name */
+ struct sensor_device_attribute attribute;
+ u8 page; /* page number */
+ u8 reg; /* register */
+ enum pmbus_sensor_classes class; /* sensor class */
+ bool update; /* runtime sensor update needed */
+ int data; /* Sensor data.
+ Negative if there was a read error */
+};
+
+struct pmbus_boolean {
+ char name[I2C_NAME_SIZE]; /* sysfs boolean name */
+ struct sensor_device_attribute attribute;
+};
+
+struct pmbus_label {
+ char name[I2C_NAME_SIZE]; /* sysfs label name */
+ struct sensor_device_attribute attribute;
+ char label[I2C_NAME_SIZE]; /* label */
+};
+
+struct pmbus_data {
+ struct device *hwmon_dev;
+
+ u32 flags; /* from platform data */
+
+ int exponent; /* linear mode: exponent for output voltages */
+
+ const struct pmbus_driver_info *info;
+
+ int max_attributes;
+ int num_attributes;
+ struct attribute **attributes;
+ struct attribute_group group;
+
+ /*
+ * Sensors cover both sensor and limit registers.
+ */
+ int max_sensors;
+ int num_sensors;
+ struct pmbus_sensor *sensors;
+ /*
+ * Booleans are used for alarms.
+ * Values are determined from status registers.
+ */
+ int max_booleans;
+ int num_booleans;
+ struct pmbus_boolean *booleans;
+ /*
+ * Labels are used to map generic names (e.g., "in1")
+ * to PMBus specific names (e.g., "vin" or "vout1").
+ */
+ int max_labels;
+ int num_labels;
+ struct pmbus_label *labels;
+
+ struct mutex update_lock;
+ bool valid;
+ unsigned long last_updated; /* in jiffies */
+
+ /*
+ * A single status register covers multiple attributes,
+ * so we keep them all together.
+ */
+ u8 status[PB_NUM_STATUS_REG];
+
+ u8 currpage;
+};
+
+int pmbus_set_page(struct i2c_client *client, u8 page)
+{
+ struct pmbus_data *data = i2c_get_clientdata(client);
+ int rv = 0;
+ int newpage;
+
+ if (page != data->currpage) {
+ rv = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page);
+ newpage = i2c_smbus_read_byte_data(client, PMBUS_PAGE);
+ if (newpage != page)
+ rv = -EINVAL;
+ else
+ data->currpage = page;
+ }
+ return rv;
+}
+EXPORT_SYMBOL_GPL(pmbus_set_page);
+
+static int pmbus_write_byte(struct i2c_client *client, u8 page, u8 value)
+{
+ int rv;
+
+ rv = pmbus_set_page(client, page);
+ if (rv < 0)
+ return rv;
+
+ return i2c_smbus_write_byte(client, value);
+}
+
+static int pmbus_write_word_data(struct i2c_client *client, u8 page, u8 reg,
+ u16 word)
+{
+ int rv;
+
+ rv = pmbus_set_page(client, page);
+ if (rv < 0)
+ return rv;
+
+ return i2c_smbus_write_word_data(client, reg, word);
+}
+
+int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg)
+{
+ int rv;
+
+ rv = pmbus_set_page(client, page);
+ if (rv < 0)
+ return rv;
+
+ return i2c_smbus_read_word_data(client, reg);
+}
+EXPORT_SYMBOL_GPL(pmbus_read_word_data);
+
+static int pmbus_read_byte_data(struct i2c_client *client, u8 page, u8 reg)
+{
+ int rv;
+
+ rv = pmbus_set_page(client, page);
+ if (rv < 0)
+ return rv;
+
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static void pmbus_clear_fault_page(struct i2c_client *client, int page)
+{
+ pmbus_write_byte(client, page, PMBUS_CLEAR_FAULTS);
+}
+
+void pmbus_clear_faults(struct i2c_client *client)
+{
+ struct pmbus_data *data = i2c_get_clientdata(client);
+ int i;
+
+ for (i = 0; i < data->info->pages; i++)
+ pmbus_clear_fault_page(client, i);
+}
+EXPORT_SYMBOL_GPL(pmbus_clear_faults);
+
+static int pmbus_check_status_cml(struct i2c_client *client, int page)
+{
+ int status, status2;
+
+ status = pmbus_read_byte_data(client, page, PMBUS_STATUS_BYTE);
+ if (status < 0 || (status & PB_STATUS_CML)) {
+ status2 = pmbus_read_byte_data(client, page, PMBUS_STATUS_CML);
+ if (status2 < 0 || (status2 & PB_CML_FAULT_INVALID_COMMAND))
+ return -EINVAL;
+ }
+ return 0;
+}
+
+bool pmbus_check_byte_register(struct i2c_client *client, int page, int reg)
+{
+ int rv;
+ struct pmbus_data *data = i2c_get_clientdata(client);
+
+ rv = pmbus_read_byte_data(client, page, reg);
+ if (rv >= 0 && !(data->flags & PMBUS_SKIP_STATUS_CHECK))
+ rv = pmbus_check_status_cml(client, page);
+ pmbus_clear_fault_page(client, page);
+ return rv >= 0;
+}
+EXPORT_SYMBOL_GPL(pmbus_check_byte_register);
+
+bool pmbus_check_word_register(struct i2c_client *client, int page, int reg)
+{
+ int rv;
+ struct pmbus_data *data = i2c_get_clientdata(client);
+
+ rv = pmbus_read_word_data(client, page, reg);
+ if (rv >= 0 && !(data->flags & PMBUS_SKIP_STATUS_CHECK))
+ rv = pmbus_check_status_cml(client, page);
+ pmbus_clear_fault_page(client, page);
+ return rv >= 0;
+}
+EXPORT_SYMBOL_GPL(pmbus_check_word_register);
+
+const struct pmbus_driver_info *pmbus_get_driver_info(struct i2c_client *client)
+{
+ struct pmbus_data *data = i2c_get_clientdata(client);
+
+ return data->info;
+}
+EXPORT_SYMBOL_GPL(pmbus_get_driver_info);
+
+/*
+ * _pmbus_read_byte_data() is similar to pmbus_read_byte_data(), but checks if
+ * a device specific mapping funcion exists and calls it if necessary.
+ */
+static int _pmbus_read_byte_data(struct i2c_client *client, int page, int reg)
+{
+ struct pmbus_data *data = i2c_get_clientdata(client);
+ const struct pmbus_driver_info *info = data->info;
+ int status;
+
+ if (info->read_byte_data) {
+ status = info->read_byte_data(client, page, reg);
+ if (status != -ENODATA)
+ return status;
+ }
+ return pmbus_read_byte_data(client, page, reg);
+}
+
+static struct pmbus_data *pmbus_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pmbus_data *data = i2c_get_clientdata(client);
+ const struct pmbus_driver_info *info = data->info;
+
+ mutex_lock(&data->update_lock);
+ if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+ int i;
+
+ for (i = 0; i < info->pages; i++)
+ data->status[PB_STATUS_BASE + i]
+ = pmbus_read_byte_data(client, i,
+ PMBUS_STATUS_BYTE);
+ for (i = 0; i < info->pages; i++) {
+ if (!(info->func[i] & PMBUS_HAVE_STATUS_VOUT))
+ continue;
+ data->status[PB_STATUS_VOUT_BASE + i]
+ = _pmbus_read_byte_data(client, i, PMBUS_STATUS_VOUT);
+ }
+ for (i = 0; i < info->pages; i++) {
+ if (!(info->func[i] & PMBUS_HAVE_STATUS_IOUT))
+ continue;
+ data->status[PB_STATUS_IOUT_BASE + i]
+ = _pmbus_read_byte_data(client, i, PMBUS_STATUS_IOUT);
+ }
+ for (i = 0; i < info->pages; i++) {
+ if (!(info->func[i] & PMBUS_HAVE_STATUS_TEMP))
+ continue;
+ data->status[PB_STATUS_TEMP_BASE + i]
+ = _pmbus_read_byte_data(client, i,
+ PMBUS_STATUS_TEMPERATURE);
+ }
+ for (i = 0; i < info->pages; i++) {
+ if (!(info->func[i] & PMBUS_HAVE_STATUS_FAN12))
+ continue;
+ data->status[PB_STATUS_FAN_BASE + i]
+ = _pmbus_read_byte_data(client, i,
+ PMBUS_STATUS_FAN_12);
+ }
+
+ for (i = 0; i < info->pages; i++) {
+ if (!(info->func[i] & PMBUS_HAVE_STATUS_FAN34))
+ continue;
+ data->status[PB_STATUS_FAN34_BASE + i]
+ = _pmbus_read_byte_data(client, i,
+ PMBUS_STATUS_FAN_34);
+ }
+
+ if (info->func[0] & PMBUS_HAVE_STATUS_INPUT)
+ data->status[PB_STATUS_INPUT_BASE]
+ = _pmbus_read_byte_data(client, 0,
+ PMBUS_STATUS_INPUT);
+
+ for (i = 0; i < data->num_sensors; i++) {
+ struct pmbus_sensor *sensor = &data->sensors[i];
+
+ if (!data->valid || sensor->update)
+ sensor->data
+ = pmbus_read_word_data(client, sensor->page,
+ sensor->reg);
+ }
+ pmbus_clear_faults(client);
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+ mutex_unlock(&data->update_lock);
+ return data;
+}
+
+/*
+ * Convert linear sensor values to milli- or micro-units
+ * depending on sensor type.
+ */
+static long pmbus_reg2data_linear(struct pmbus_data *data,
+ struct pmbus_sensor *sensor)
+{
+ s16 exponent;
+ s32 mantissa;
+ long val;
+
+ if (sensor->class == PSC_VOLTAGE_OUT) { /* LINEAR16 */
+ exponent = data->exponent;
+ mantissa = (u16) sensor->data;
+ } else { /* LINEAR11 */
+ exponent = (sensor->data >> 11) & 0x001f;
+ mantissa = sensor->data & 0x07ff;
+
+ if (exponent > 0x0f)
+ exponent |= 0xffe0; /* sign extend exponent */
+ if (mantissa > 0x03ff)
+ mantissa |= 0xfffff800; /* sign extend mantissa */
+ }
+
+ val = mantissa;
+
+ /* scale result to milli-units for all sensors except fans */
+ if (sensor->class != PSC_FAN)
+ val = val * 1000L;
+
+ /* scale result to micro-units for power sensors */
+ if (sensor->class == PSC_POWER)
+ val = val * 1000L;
+
+ if (exponent >= 0)
+ val <<= exponent;
+ else
+ val >>= -exponent;
+
+ return val;
+}
+
+/*
+ * Convert direct sensor values to milli- or micro-units
+ * depending on sensor type.
+ */
+static long pmbus_reg2data_direct(struct pmbus_data *data,
+ struct pmbus_sensor *sensor)
+{
+ long val = (s16) sensor->data;
+ long m, b, R;
+
+ m = data->info->m[sensor->class];
+ b = data->info->b[sensor->class];
+ R = data->info->R[sensor->class];
+
+ if (m == 0)
+ return 0;
+
+ /* X = 1/m * (Y * 10^-R - b) */
+ R = -R;
+ /* scale result to milli-units for everything but fans */
+ if (sensor->class != PSC_FAN) {
+ R += 3;
+ b *= 1000;
+ }
+
+ /* scale result to micro-units for power sensors */
+ if (sensor->class == PSC_POWER) {
+ R += 3;
+ b *= 1000;
+ }
+
+ while (R > 0) {
+ val *= 10;
+ R--;
+ }
+ while (R < 0) {
+ val = DIV_ROUND_CLOSEST(val, 10);
+ R++;
+ }
+
+ return (val - b) / m;
+}
+
+static long pmbus_reg2data(struct pmbus_data *data, struct pmbus_sensor *sensor)
+{
+ long val;
+
+ if (data->info->direct[sensor->class])
+ val = pmbus_reg2data_direct(data, sensor);
+ else
+ val = pmbus_reg2data_linear(data, sensor);
+
+ return val;
+}
+
+#define MAX_MANTISSA (1023 * 1000)
+#define MIN_MANTISSA (511 * 1000)
+
+static u16 pmbus_data2reg_linear(struct pmbus_data *data,
+ enum pmbus_sensor_classes class, long val)
+{
+ s16 exponent = 0, mantissa;
+ bool negative = false;
+
+ /* simple case */
+ if (val == 0)
+ return 0;
+
+ if (class == PSC_VOLTAGE_OUT) {
+ /* LINEAR16 does not support negative voltages */
+ if (val < 0)
+ return 0;
+
+ /*
+ * For a static exponents, we don't have a choice
+ * but to adjust the value to it.
+ */
+ if (data->exponent < 0)
+ val <<= -data->exponent;
+ else
+ val >>= data->exponent;
+ val = DIV_ROUND_CLOSEST(val, 1000);
+ return val & 0xffff;
+ }
+
+ if (val < 0) {
+ negative = true;
+ val = -val;
+ }
+
+ /* Power is in uW. Convert to mW before converting. */
+ if (class == PSC_POWER)
+ val = DIV_ROUND_CLOSEST(val, 1000L);
+
+ /*
+ * For simplicity, convert fan data to milli-units
+ * before calculating the exponent.
+ */
+ if (class == PSC_FAN)
+ val = val * 1000;
+
+ /* Reduce large mantissa until it fits into 10 bit */
+ while (val >= MAX_MANTISSA && exponent < 15) {
+ exponent++;
+ val >>= 1;
+ }
+ /* Increase small mantissa to improve precision */
+ while (val < MIN_MANTISSA && exponent > -15) {
+ exponent--;
+ val <<= 1;
+ }
+
+ /* Convert mantissa from milli-units to units */
+ mantissa = DIV_ROUND_CLOSEST(val, 1000);
+
+ /* Ensure that resulting number is within range */
+ if (mantissa > 0x3ff)
+ mantissa = 0x3ff;
+
+ /* restore sign */
+ if (negative)
+ mantissa = -mantissa;
+
+ /* Convert to 5 bit exponent, 11 bit mantissa */
+ return (mantissa & 0x7ff) | ((exponent << 11) & 0xf800);
+}
+
+static u16 pmbus_data2reg_direct(struct pmbus_data *data,
+ enum pmbus_sensor_classes class, long val)
+{
+ long m, b, R;
+
+ m = data->info->m[class];
+ b = data->info->b[class];
+ R = data->info->R[class];
+
+ /* Power is in uW. Adjust R and b. */
+ if (class == PSC_POWER) {
+ R -= 3;
+ b *= 1000;
+ }
+
+ /* Calculate Y = (m * X + b) * 10^R */
+ if (class != PSC_FAN) {
+ R -= 3; /* Adjust R and b for data in milli-units */
+ b *= 1000;
+ }
+ val = val * m + b;
+
+ while (R > 0) {
+ val *= 10;
+ R--;
+ }
+ while (R < 0) {
+ val = DIV_ROUND_CLOSEST(val, 10);
+ R++;
+ }
+
+ return val;
+}
+
+static u16 pmbus_data2reg(struct pmbus_data *data,
+ enum pmbus_sensor_classes class, long val)
+{
+ u16 regval;
+
+ if (data->info->direct[class])
+ regval = pmbus_data2reg_direct(data, class, val);
+ else
+ regval = pmbus_data2reg_linear(data, class, val);
+
+ return regval;
+}
+
+/*
+ * Return boolean calculated from converted data.
+ * <index> defines a status register index and mask, and optionally
+ * two sensor indexes.
+ * The upper half-word references the two sensors,
+ * two sensor indices.
+ * The upper half-word references the two optional sensors,
+ * the lower half word references status register and mask.
+ * The function returns true if (status[reg] & mask) is true and,
+ * if specified, if v1 >= v2.
+ * To determine if an object exceeds upper limits, specify <v, limit>.
+ * To determine if an object exceeds lower limits, specify <limit, v>.
+ *
+ * For booleans created with pmbus_add_boolean_reg(), only the lower 16 bits of
+ * index are set. s1 and s2 (the sensor index values) are zero in this case.
+ * The function returns true if (status[reg] & mask) is true.
+ *
+ * If the boolean was created with pmbus_add_boolean_cmp(), a comparison against
+ * a specified limit has to be performed to determine the boolean result.
+ * In this case, the function returns true if v1 >= v2 (where v1 and v2 are
+ * sensor values referenced by sensor indices s1 and s2).
+ *
+ * To determine if an object exceeds upper limits, specify <s1,s2> = <v,limit>.
+ * To determine if an object exceeds lower limits, specify <s1,s2> = <limit,v>.
+ *
+ * If a negative value is stored in any of the referenced registers, this value
+ * reflects an error code which will be returned.
+ */
+static int pmbus_get_boolean(struct pmbus_data *data, int index, int *val)
+{
+ u8 s1 = (index >> 24) & 0xff;
+ u8 s2 = (index >> 16) & 0xff;
+ u8 reg = (index >> 8) & 0xff;
+ u8 mask = index & 0xff;
+ int status;
+ u8 regval;
+
+ status = data->status[reg];
+ if (status < 0)
+ return status;
+
+ regval = status & mask;
+ if (!s1 && !s2)
+ *val = !!regval;
+ else {
+ long v1, v2;
+ struct pmbus_sensor *sensor1, *sensor2;
+
+ sensor1 = &data->sensors[s1];
+ if (sensor1->data < 0)
+ return sensor1->data;
+ sensor2 = &data->sensors[s2];
+ if (sensor2->data < 0)
+ return sensor2->data;
+
+ v1 = pmbus_reg2data(data, sensor1);
+ v2 = pmbus_reg2data(data, sensor2);
+ *val = !!(regval && v1 >= v2);
+ }
+ return 0;
+}
+
+static ssize_t pmbus_show_boolean(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct pmbus_data *data = pmbus_update_device(dev);
+ int val;
+ int err;
+
+ err = pmbus_get_boolean(data, attr->index, &val);
+ if (err)
+ return err;
+ return snprintf(buf, PAGE_SIZE, "%d\n", val);
+}
+
+static ssize_t pmbus_show_sensor(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct pmbus_data *data = pmbus_update_device(dev);
+ struct pmbus_sensor *sensor;
+
+ sensor = &data->sensors[attr->index];
+ if (sensor->data < 0)
+ return sensor->data;
+
+ return snprintf(buf, PAGE_SIZE, "%ld\n", pmbus_reg2data(data, sensor));
+}
+
+static ssize_t pmbus_set_sensor(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pmbus_data *data = i2c_get_clientdata(client);
+ struct pmbus_sensor *sensor = &data->sensors[attr->index];
+ ssize_t rv = count;
+ long val = 0;
+ int ret;
+ u16 regval;
+
+ if (strict_strtol(buf, 10, &val) < 0)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ regval = pmbus_data2reg(data, sensor->class, val);
+ ret = pmbus_write_word_data(client, sensor->page, sensor->reg, regval);
+ if (ret < 0)
+ rv = ret;
+ else
+ data->sensors[attr->index].data = regval;
+ mutex_unlock(&data->update_lock);
+ return rv;
+}
+
+static ssize_t pmbus_show_label(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pmbus_data *data = i2c_get_clientdata(client);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+
+ return snprintf(buf, PAGE_SIZE, "%s\n",
+ data->labels[attr->index].label);
+}
+
+#define PMBUS_ADD_ATTR(data, _name, _idx, _mode, _type, _show, _set) \
+do { \
+ struct sensor_device_attribute *a \
+ = &data->_type##s[data->num_##_type##s].attribute; \
+ BUG_ON(data->num_attributes >= data->max_attributes); \
+ sysfs_attr_init(&a->dev_attr.attr); \
+ a->dev_attr.attr.name = _name; \
+ a->dev_attr.attr.mode = _mode; \
+ a->dev_attr.show = _show; \
+ a->dev_attr.store = _set; \
+ a->index = _idx; \
+ data->attributes[data->num_attributes] = &a->dev_attr.attr; \
+ data->num_attributes++; \
+} while (0)
+
+#define PMBUS_ADD_GET_ATTR(data, _name, _type, _idx) \
+ PMBUS_ADD_ATTR(data, _name, _idx, S_IRUGO, _type, \
+ pmbus_show_##_type, NULL)
+
+#define PMBUS_ADD_SET_ATTR(data, _name, _type, _idx) \
+ PMBUS_ADD_ATTR(data, _name, _idx, S_IWUSR | S_IRUGO, _type, \
+ pmbus_show_##_type, pmbus_set_##_type)
+
+static void pmbus_add_boolean(struct pmbus_data *data,
+ const char *name, const char *type, int seq,
+ int idx)
+{
+ struct pmbus_boolean *boolean;
+
+ BUG_ON(data->num_booleans >= data->max_booleans);
+
+ boolean = &data->booleans[data->num_booleans];
+
+ snprintf(boolean->name, sizeof(boolean->name), "%s%d_%s",
+ name, seq, type);
+ PMBUS_ADD_GET_ATTR(data, boolean->name, boolean, idx);
+ data->num_booleans++;
+}
+
+static void pmbus_add_boolean_reg(struct pmbus_data *data,
+ const char *name, const char *type,
+ int seq, int reg, int bit)
+{
+ pmbus_add_boolean(data, name, type, seq, (reg << 8) | bit);
+}
+
+static void pmbus_add_boolean_cmp(struct pmbus_data *data,
+ const char *name, const char *type,
+ int seq, int i1, int i2, int reg, int mask)
+{
+ pmbus_add_boolean(data, name, type, seq,
+ (i1 << 24) | (i2 << 16) | (reg << 8) | mask);
+}
+
+static void pmbus_add_sensor(struct pmbus_data *data,
+ const char *name, const char *type, int seq,
+ int page, int reg, enum pmbus_sensor_classes class,
+ bool update, bool readonly)
+{
+ struct pmbus_sensor *sensor;
+
+ BUG_ON(data->num_sensors >= data->max_sensors);
+
+ sensor = &data->sensors[data->num_sensors];
+ snprintf(sensor->name, sizeof(sensor->name), "%s%d_%s",
+ name, seq, type);
+ sensor->page = page;
+ sensor->reg = reg;
+ sensor->class = class;
+ sensor->update = update;
+ if (readonly)
+ PMBUS_ADD_GET_ATTR(data, sensor->name, sensor,
+ data->num_sensors);
+ else
+ PMBUS_ADD_SET_ATTR(data, sensor->name, sensor,
+ data->num_sensors);
+ data->num_sensors++;
+}
+
+static void pmbus_add_label(struct pmbus_data *data,
+ const char *name, int seq,
+ const char *lstring, int index)
+{
+ struct pmbus_label *label;
+
+ BUG_ON(data->num_labels >= data->max_labels);
+
+ label = &data->labels[data->num_labels];
+ snprintf(label->name, sizeof(label->name), "%s%d_label", name, seq);
+ if (!index)
+ strncpy(label->label, lstring, sizeof(label->label) - 1);
+ else
+ snprintf(label->label, sizeof(label->label), "%s%d", lstring,
+ index);
+
+ PMBUS_ADD_GET_ATTR(data, label->name, label, data->num_labels);
+ data->num_labels++;
+}
+
+/*
+ * Determine maximum number of sensors, booleans, and labels.
+ * To keep things simple, only make a rough high estimate.
+ */
+static void pmbus_find_max_attr(struct i2c_client *client,
+ struct pmbus_data *data)
+{
+ const struct pmbus_driver_info *info = data->info;
+ int page, max_sensors, max_booleans, max_labels;
+
+ max_sensors = PMBUS_MAX_INPUT_SENSORS;
+ max_booleans = PMBUS_MAX_INPUT_BOOLEANS;
+ max_labels = PMBUS_MAX_INPUT_LABELS;
+
+ for (page = 0; page < info->pages; page++) {
+ if (info->func[page] & PMBUS_HAVE_VOUT) {
+ max_sensors += PMBUS_VOUT_SENSORS_PER_PAGE;
+ max_booleans += PMBUS_VOUT_BOOLEANS_PER_PAGE;
+ max_labels++;
+ }
+ if (info->func[page] & PMBUS_HAVE_IOUT) {
+ max_sensors += PMBUS_IOUT_SENSORS_PER_PAGE;
+ max_booleans += PMBUS_IOUT_BOOLEANS_PER_PAGE;
+ max_labels++;
+ }
+ if (info->func[page] & PMBUS_HAVE_POUT) {
+ max_sensors += PMBUS_POUT_SENSORS_PER_PAGE;
+ max_booleans += PMBUS_POUT_BOOLEANS_PER_PAGE;
+ max_labels++;
+ }
+ if (info->func[page] & PMBUS_HAVE_FAN12) {
+ max_sensors += 2 * PMBUS_MAX_SENSORS_PER_FAN;
+ max_booleans += 2 * PMBUS_MAX_BOOLEANS_PER_FAN;
+ }
+ if (info->func[page] & PMBUS_HAVE_FAN34) {
+ max_sensors += 2 * PMBUS_MAX_SENSORS_PER_FAN;
+ max_booleans += 2 * PMBUS_MAX_BOOLEANS_PER_FAN;
+ }
+ if (info->func[page] & PMBUS_HAVE_TEMP) {
+ max_sensors += PMBUS_MAX_SENSORS_PER_TEMP;
+ max_booleans += PMBUS_MAX_BOOLEANS_PER_TEMP;
+ }
+ if (info->func[page] & PMBUS_HAVE_TEMP2) {
+ max_sensors += PMBUS_MAX_SENSORS_PER_TEMP;
+ max_booleans += PMBUS_MAX_BOOLEANS_PER_TEMP;
+ }
+ if (info->func[page] & PMBUS_HAVE_TEMP3) {
+ max_sensors += PMBUS_MAX_SENSORS_PER_TEMP;
+ max_booleans += PMBUS_MAX_BOOLEANS_PER_TEMP;
+ }
+ }
+ data->max_sensors = max_sensors;
+ data->max_booleans = max_booleans;
+ data->max_labels = max_labels;
+ data->max_attributes = max_sensors + max_booleans + max_labels;
+}
+
+/*
+ * Search for attributes. Allocate sensors, booleans, and labels as needed.
+ */
+
+/*
+ * The pmbus_limit_attr structure describes a single limit attribute
+ * and its associated alarm attribute.
+ */
+struct pmbus_limit_attr {
+ u8 reg; /* Limit register */
+ const char *attr; /* Attribute name */
+ const char *alarm; /* Alarm attribute name */
+ u32 sbit; /* Alarm attribute status bit */
+};
+
+/*
+ * The pmbus_sensor_attr structure describes one sensor attribute. This
+ * description includes a reference to the associated limit attributes.
+ */
+struct pmbus_sensor_attr {
+ u8 reg; /* sensor register */
+ enum pmbus_sensor_classes class;/* sensor class */
+ const char *label; /* sensor label */
+ bool paged; /* true if paged sensor */
+ bool update; /* true if update needed */
+ bool compare; /* true if compare function needed */
+ u32 func; /* sensor mask */
+ u32 sfunc; /* sensor status mask */
+ int sbase; /* status base register */
+ u32 gbit; /* generic status bit */
+ const struct pmbus_limit_attr *limit;/* limit registers */
+ int nlimit; /* # of limit registers */
+};
+
+/*
+ * Add a set of limit attributes and, if supported, the associated
+ * alarm attributes.
+ */
+static bool pmbus_add_limit_attrs(struct i2c_client *client,
+ struct pmbus_data *data,
+ const struct pmbus_driver_info *info,
+ const char *name, int index, int page,
+ int cbase,
+ const struct pmbus_sensor_attr *attr)
+{
+ const struct pmbus_limit_attr *l = attr->limit;
+ int nlimit = attr->nlimit;
+ bool have_alarm = false;
+ int i, cindex;
+
+ for (i = 0; i < nlimit; i++) {
+ if (pmbus_check_word_register(client, page, l->reg)) {
+ cindex = data->num_sensors;
+ pmbus_add_sensor(data, name, l->attr, index, page,
+ l->reg, attr->class, attr->update,
+ false);
+ if (info->func[page] & attr->sfunc) {
+ if (attr->compare) {
+ pmbus_add_boolean_cmp(data, name,
+ l->alarm, index,
+ cbase, cindex,
+ attr->sbase + page, l->sbit);
+ } else {
+ pmbus_add_boolean_reg(data, name,
+ l->alarm, index,
+ attr->sbase + page, l->sbit);
+ }
+ have_alarm = true;
+ }
+ }
+ l++;
+ }
+ return have_alarm;
+}
+
+static void pmbus_add_sensor_attrs_one(struct i2c_client *client,
+ struct pmbus_data *data,
+ const struct pmbus_driver_info *info,
+ const char *name,
+ int index, int page,
+ const struct pmbus_sensor_attr *attr)
+{
+ bool have_alarm;
+ int cbase = data->num_sensors;
+
+ if (attr->label)
+ pmbus_add_label(data, name, index, attr->label,
+ attr->paged ? page + 1 : 0);
+ pmbus_add_sensor(data, name, "input", index, page, attr->reg,
+ attr->class, true, true);
+ if (attr->sfunc) {
+ have_alarm = pmbus_add_limit_attrs(client, data, info, name,
+ index, page, cbase, attr);
+ /*
+ * Add generic alarm attribute only if there are no individual
+ * alarm attributes, and if there is a global alarm bit.
+ */
+ if (!have_alarm && attr->gbit)
+ pmbus_add_boolean_reg(data, name, "alarm", index,
+ PB_STATUS_BASE + page,
+ attr->gbit);
+ }
+}
+
+static void pmbus_add_sensor_attrs(struct i2c_client *client,
+ struct pmbus_data *data,
+ const char *name,
+ const struct pmbus_sensor_attr *attrs,
+ int nattrs)
+{
+ const struct pmbus_driver_info *info = data->info;
+ int index, i;
+
+ index = 1;
+ for (i = 0; i < nattrs; i++) {
+ int page, pages;
+
+ pages = attrs->paged ? info->pages : 1;
+ for (page = 0; page < pages; page++) {
+ if (!(info->func[page] & attrs->func))
+ continue;
+ pmbus_add_sensor_attrs_one(client, data, info, name,
+ index, page, attrs);
+ index++;
+ }
+ attrs++;
+ }
+}
+
+static const struct pmbus_limit_attr vin_limit_attrs[] = {
+ {
+ .reg = PMBUS_VIN_UV_WARN_LIMIT,
+ .attr = "min",
+ .alarm = "min_alarm",
+ .sbit = PB_VOLTAGE_UV_WARNING,
+ }, {
+ .reg = PMBUS_VIN_UV_FAULT_LIMIT,
+ .attr = "lcrit",
+ .alarm = "lcrit_alarm",
+ .sbit = PB_VOLTAGE_UV_FAULT,
+ }, {
+ .reg = PMBUS_VIN_OV_WARN_LIMIT,
+ .attr = "max",
+ .alarm = "max_alarm",
+ .sbit = PB_VOLTAGE_OV_WARNING,
+ }, {
+ .reg = PMBUS_VIN_OV_FAULT_LIMIT,
+ .attr = "crit",
+ .alarm = "crit_alarm",
+ .sbit = PB_VOLTAGE_OV_FAULT,
+ },
+};
+
+static const struct pmbus_limit_attr vout_limit_attrs[] = {
+ {
+ .reg = PMBUS_VOUT_UV_WARN_LIMIT,
+ .attr = "min",
+ .alarm = "min_alarm",
+ .sbit = PB_VOLTAGE_UV_WARNING,
+ }, {
+ .reg = PMBUS_VOUT_UV_FAULT_LIMIT,
+ .attr = "lcrit",
+ .alarm = "lcrit_alarm",
+ .sbit = PB_VOLTAGE_UV_FAULT,
+ }, {
+ .reg = PMBUS_VOUT_OV_WARN_LIMIT,
+ .attr = "max",
+ .alarm = "max_alarm",
+ .sbit = PB_VOLTAGE_OV_WARNING,
+ }, {
+ .reg = PMBUS_VOUT_OV_FAULT_LIMIT,
+ .attr = "crit",
+ .alarm = "crit_alarm",
+ .sbit = PB_VOLTAGE_OV_FAULT,
+ }
+};
+
+static const struct pmbus_sensor_attr voltage_attributes[] = {
+ {
+ .reg = PMBUS_READ_VIN,
+ .class = PSC_VOLTAGE_IN,
+ .label = "vin",
+ .func = PMBUS_HAVE_VIN,
+ .sfunc = PMBUS_HAVE_STATUS_INPUT,
+ .sbase = PB_STATUS_INPUT_BASE,
+ .gbit = PB_STATUS_VIN_UV,
+ .limit = vin_limit_attrs,
+ .nlimit = ARRAY_SIZE(vin_limit_attrs),
+ }, {
+ .reg = PMBUS_READ_VCAP,
+ .class = PSC_VOLTAGE_IN,
+ .label = "vcap",
+ .func = PMBUS_HAVE_VCAP,
+ }, {
+ .reg = PMBUS_READ_VOUT,
+ .class = PSC_VOLTAGE_OUT,
+ .label = "vout",
+ .paged = true,
+ .func = PMBUS_HAVE_VOUT,
+ .sfunc = PMBUS_HAVE_STATUS_VOUT,
+ .sbase = PB_STATUS_VOUT_BASE,
+ .gbit = PB_STATUS_VOUT_OV,
+ .limit = vout_limit_attrs,
+ .nlimit = ARRAY_SIZE(vout_limit_attrs),
+ }
+};
+
+/* Current attributes */
+
+static const struct pmbus_limit_attr iin_limit_attrs[] = {
+ {
+ .reg = PMBUS_IIN_OC_WARN_LIMIT,
+ .attr = "max",
+ .alarm = "max_alarm",
+ .sbit = PB_IIN_OC_WARNING,
+ }, {
+ .reg = PMBUS_IIN_OC_FAULT_LIMIT,
+ .attr = "crit",
+ .alarm = "crit_alarm",
+ .sbit = PB_IIN_OC_FAULT,
+ }
+};
+
+static const struct pmbus_limit_attr iout_limit_attrs[] = {
+ {
+ .reg = PMBUS_IOUT_OC_WARN_LIMIT,
+ .attr = "max",
+ .alarm = "max_alarm",
+ .sbit = PB_IOUT_OC_WARNING,
+ }, {
+ .reg = PMBUS_IOUT_UC_FAULT_LIMIT,
+ .attr = "lcrit",
+ .alarm = "lcrit_alarm",
+ .sbit = PB_IOUT_UC_FAULT,
+ }, {
+ .reg = PMBUS_IOUT_OC_FAULT_LIMIT,
+ .attr = "crit",
+ .alarm = "crit_alarm",
+ .sbit = PB_IOUT_OC_FAULT,
+ }
+};
+
+static const struct pmbus_sensor_attr current_attributes[] = {
+ {
+ .reg = PMBUS_READ_IIN,
+ .class = PSC_CURRENT_IN,
+ .label = "iin",
+ .func = PMBUS_HAVE_IIN,
+ .sfunc = PMBUS_HAVE_STATUS_INPUT,
+ .sbase = PB_STATUS_INPUT_BASE,
+ .limit = iin_limit_attrs,
+ .nlimit = ARRAY_SIZE(iin_limit_attrs),
+ }, {
+ .reg = PMBUS_READ_IOUT,
+ .class = PSC_CURRENT_OUT,
+ .label = "iout",
+ .paged = true,
+ .func = PMBUS_HAVE_IOUT,
+ .sfunc = PMBUS_HAVE_STATUS_IOUT,
+ .sbase = PB_STATUS_IOUT_BASE,
+ .gbit = PB_STATUS_IOUT_OC,
+ .limit = iout_limit_attrs,
+ .nlimit = ARRAY_SIZE(iout_limit_attrs),
+ }
+};
+
+/* Power attributes */
+
+static const struct pmbus_limit_attr pin_limit_attrs[] = {
+ {
+ .reg = PMBUS_PIN_OP_WARN_LIMIT,
+ .attr = "max",
+ .alarm = "alarm",
+ .sbit = PB_PIN_OP_WARNING,
+ }
+};
+
+static const struct pmbus_limit_attr pout_limit_attrs[] = {
+ {
+ .reg = PMBUS_POUT_MAX,
+ .attr = "cap",
+ .alarm = "cap_alarm",
+ .sbit = PB_POWER_LIMITING,
+ }, {
+ .reg = PMBUS_POUT_OP_WARN_LIMIT,
+ .attr = "max",
+ .alarm = "max_alarm",
+ .sbit = PB_POUT_OP_WARNING,
+ }, {
+ .reg = PMBUS_POUT_OP_FAULT_LIMIT,
+ .attr = "crit",
+ .alarm = "crit_alarm",
+ .sbit = PB_POUT_OP_FAULT,
+ }
+};
+
+static const struct pmbus_sensor_attr power_attributes[] = {
+ {
+ .reg = PMBUS_READ_PIN,
+ .class = PSC_POWER,
+ .label = "pin",
+ .func = PMBUS_HAVE_PIN,
+ .sfunc = PMBUS_HAVE_STATUS_INPUT,
+ .sbase = PB_STATUS_INPUT_BASE,
+ .limit = pin_limit_attrs,
+ .nlimit = ARRAY_SIZE(pin_limit_attrs),
+ }, {
+ .reg = PMBUS_READ_POUT,
+ .class = PSC_POWER,
+ .label = "pout",
+ .paged = true,
+ .func = PMBUS_HAVE_POUT,
+ .sfunc = PMBUS_HAVE_STATUS_IOUT,
+ .sbase = PB_STATUS_IOUT_BASE,
+ .limit = pout_limit_attrs,
+ .nlimit = ARRAY_SIZE(pout_limit_attrs),
+ }
+};
+
+/* Temperature atributes */
+
+static const struct pmbus_limit_attr temp_limit_attrs[] = {
+ {
+ .reg = PMBUS_UT_WARN_LIMIT,
+ .attr = "min",
+ .alarm = "min_alarm",
+ .sbit = PB_TEMP_UT_WARNING,
+ }, {
+ .reg = PMBUS_UT_FAULT_LIMIT,
+ .attr = "lcrit",
+ .alarm = "lcrit_alarm",
+ .sbit = PB_TEMP_UT_FAULT,
+ }, {
+ .reg = PMBUS_OT_WARN_LIMIT,
+ .attr = "max",
+ .alarm = "max_alarm",
+ .sbit = PB_TEMP_OT_WARNING,
+ }, {
+ .reg = PMBUS_OT_FAULT_LIMIT,
+ .attr = "crit",
+ .alarm = "crit_alarm",
+ .sbit = PB_TEMP_OT_FAULT,
+ }
+};
+
+static const struct pmbus_sensor_attr temp_attributes[] = {
+ {
+ .reg = PMBUS_READ_TEMPERATURE_1,
+ .class = PSC_TEMPERATURE,
+ .paged = true,
+ .update = true,
+ .compare = true,
+ .func = PMBUS_HAVE_TEMP,
+ .sfunc = PMBUS_HAVE_STATUS_TEMP,
+ .sbase = PB_STATUS_TEMP_BASE,
+ .gbit = PB_STATUS_TEMPERATURE,
+ .limit = temp_limit_attrs,
+ .nlimit = ARRAY_SIZE(temp_limit_attrs),
+ }, {
+ .reg = PMBUS_READ_TEMPERATURE_2,
+ .class = PSC_TEMPERATURE,
+ .paged = true,
+ .update = true,
+ .compare = true,
+ .func = PMBUS_HAVE_TEMP2,
+ .sfunc = PMBUS_HAVE_STATUS_TEMP,
+ .sbase = PB_STATUS_TEMP_BASE,
+ .gbit = PB_STATUS_TEMPERATURE,
+ .limit = temp_limit_attrs,
+ .nlimit = ARRAY_SIZE(temp_limit_attrs),
+ }, {
+ .reg = PMBUS_READ_TEMPERATURE_3,
+ .class = PSC_TEMPERATURE,
+ .paged = true,
+ .update = true,
+ .compare = true,
+ .func = PMBUS_HAVE_TEMP3,
+ .sfunc = PMBUS_HAVE_STATUS_TEMP,
+ .sbase = PB_STATUS_TEMP_BASE,
+ .gbit = PB_STATUS_TEMPERATURE,
+ .limit = temp_limit_attrs,
+ .nlimit = ARRAY_SIZE(temp_limit_attrs),
+ }
+};
+
+static const int pmbus_fan_registers[] = {
+ PMBUS_READ_FAN_SPEED_1,
+ PMBUS_READ_FAN_SPEED_2,
+ PMBUS_READ_FAN_SPEED_3,
+ PMBUS_READ_FAN_SPEED_4
+};
+
+static const int pmbus_fan_config_registers[] = {
+ PMBUS_FAN_CONFIG_12,
+ PMBUS_FAN_CONFIG_12,
+ PMBUS_FAN_CONFIG_34,
+ PMBUS_FAN_CONFIG_34
+};
+
+static const int pmbus_fan_status_registers[] = {
+ PMBUS_STATUS_FAN_12,
+ PMBUS_STATUS_FAN_12,
+ PMBUS_STATUS_FAN_34,
+ PMBUS_STATUS_FAN_34
+};
+
+static const u32 pmbus_fan_flags[] = {
+ PMBUS_HAVE_FAN12,
+ PMBUS_HAVE_FAN12,
+ PMBUS_HAVE_FAN34,
+ PMBUS_HAVE_FAN34
+};
+
+static const u32 pmbus_fan_status_flags[] = {
+ PMBUS_HAVE_STATUS_FAN12,
+ PMBUS_HAVE_STATUS_FAN12,
+ PMBUS_HAVE_STATUS_FAN34,
+ PMBUS_HAVE_STATUS_FAN34
+};
+
+/* Fans */
+static void pmbus_add_fan_attributes(struct i2c_client *client,
+ struct pmbus_data *data)
+{
+ const struct pmbus_driver_info *info = data->info;
+ int index = 1;
+ int page;
+
+ for (page = 0; page < info->pages; page++) {
+ int f;
+
+ for (f = 0; f < ARRAY_SIZE(pmbus_fan_registers); f++) {
+ int regval;
+
+ if (!(info->func[page] & pmbus_fan_flags[f]))
+ break;
+
+ if (!pmbus_check_word_register(client, page,
+ pmbus_fan_registers[f]))
+ break;
+
+ /*
+ * Skip fan if not installed.
+ * Each fan configuration register covers multiple fans,
+ * so we have to do some magic.
+ */
+ regval = _pmbus_read_byte_data(client, page,
+ pmbus_fan_config_registers[f]);
+ if (regval < 0 ||
+ (!(regval & (PB_FAN_1_INSTALLED >> ((f & 1) * 4)))))
+ continue;
+
+ pmbus_add_sensor(data, "fan", "input", index, page,
+ pmbus_fan_registers[f], PSC_FAN, true,
+ true);
+
+ /*
+ * Each fan status register covers multiple fans,
+ * so we have to do some magic.
+ */
+ if ((info->func[page] & pmbus_fan_status_flags[f]) &&
+ pmbus_check_byte_register(client,
+ page, pmbus_fan_status_registers[f])) {
+ int base;
+
+ if (f > 1) /* fan 3, 4 */
+ base = PB_STATUS_FAN34_BASE + page;
+ else
+ base = PB_STATUS_FAN_BASE + page;
+ pmbus_add_boolean_reg(data, "fan", "alarm",
+ index, base,
+ PB_FAN_FAN1_WARNING >> (f & 1));
+ pmbus_add_boolean_reg(data, "fan", "fault",
+ index, base,
+ PB_FAN_FAN1_FAULT >> (f & 1));
+ }
+ index++;
+ }
+ }
+}
+
+static void pmbus_find_attributes(struct i2c_client *client,
+ struct pmbus_data *data)
+{
+ /* Voltage sensors */
+ pmbus_add_sensor_attrs(client, data, "in", voltage_attributes,
+ ARRAY_SIZE(voltage_attributes));
+
+ /* Current sensors */
+ pmbus_add_sensor_attrs(client, data, "curr", current_attributes,
+ ARRAY_SIZE(current_attributes));
+
+ /* Power sensors */
+ pmbus_add_sensor_attrs(client, data, "power", power_attributes,
+ ARRAY_SIZE(power_attributes));
+
+ /* Temperature sensors */
+ pmbus_add_sensor_attrs(client, data, "temp", temp_attributes,
+ ARRAY_SIZE(temp_attributes));
+
+ /* Fans */
+ pmbus_add_fan_attributes(client, data);
+}
+
+/*
+ * Identify chip parameters.
+ * This function is called for all chips.
+ */
+static int pmbus_identify_common(struct i2c_client *client,
+ struct pmbus_data *data)
+{
+ int vout_mode = -1, exponent;
+
+ if (pmbus_check_byte_register(client, 0, PMBUS_VOUT_MODE))
+ vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
+ if (vout_mode >= 0 && vout_mode != 0xff) {
+ /*
+ * Not all chips support the VOUT_MODE command,
+ * so a failure to read it is not an error.
+ */
+ switch (vout_mode >> 5) {
+ case 0: /* linear mode */
+ if (data->info->direct[PSC_VOLTAGE_OUT])
+ return -ENODEV;
+
+ exponent = vout_mode & 0x1f;
+ /* and sign-extend it */
+ if (exponent & 0x10)
+ exponent |= ~0x1f;
+ data->exponent = exponent;
+ break;
+ case 2: /* direct mode */
+ if (!data->info->direct[PSC_VOLTAGE_OUT])
+ return -ENODEV;
+ break;
+ default:
+ return -ENODEV;
+ }
+ }
+
+ /* Determine maximum number of sensors, booleans, and labels */
+ pmbus_find_max_attr(client, data);
+ pmbus_clear_fault_page(client, 0);
+ return 0;
+}
+
+int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
+ struct pmbus_driver_info *info)
+{
+ const struct pmbus_platform_data *pdata = client->dev.platform_data;
+ struct pmbus_data *data;
+ int ret;
+
+ if (!info) {
+ dev_err(&client->dev, "Missing chip information");
+ return -ENODEV;
+ }
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WRITE_BYTE
+ | I2C_FUNC_SMBUS_BYTE_DATA
+ | I2C_FUNC_SMBUS_WORD_DATA))
+ return -ENODEV;
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ dev_err(&client->dev, "No memory to allocate driver data\n");
+ return -ENOMEM;
+ }
+
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->update_lock);
+
+ /* Bail out if PMBus status register does not exist. */
+ if (i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE) < 0) {
+ dev_err(&client->dev, "PMBus status register not found\n");
+ ret = -ENODEV;
+ goto out_data;
+ }
+
+ if (pdata)
+ data->flags = pdata->flags;
+ data->info = info;
+
+ pmbus_clear_faults(client);
+
+ if (info->identify) {
+ ret = (*info->identify)(client, info);
+ if (ret < 0) {
+ dev_err(&client->dev, "Chip identification failed\n");
+ goto out_data;
+ }
+ }
+
+ if (info->pages <= 0 || info->pages > PMBUS_PAGES) {
+ dev_err(&client->dev, "Bad number of PMBus pages: %d\n",
+ info->pages);
+ ret = -EINVAL;
+ goto out_data;
+ }
+ /*
+ * Bail out if more than one page was configured, but we can not
+ * select the highest page. This is an indication that the wrong
+ * chip type was selected. Better bail out now than keep
+ * returning errors later on.
+ */
+ if (info->pages > 1 && pmbus_set_page(client, info->pages - 1) < 0) {
+ dev_err(&client->dev, "Failed to select page %d\n",
+ info->pages - 1);
+ ret = -EINVAL;
+ goto out_data;
+ }
+
+ ret = pmbus_identify_common(client, data);
+ if (ret < 0) {
+ dev_err(&client->dev, "Failed to identify chip capabilities\n");
+ goto out_data;
+ }
+
+ ret = -ENOMEM;
+ data->sensors = kzalloc(sizeof(struct pmbus_sensor) * data->max_sensors,
+ GFP_KERNEL);
+ if (!data->sensors) {
+ dev_err(&client->dev, "No memory to allocate sensor data\n");
+ goto out_data;
+ }
+
+ data->booleans = kzalloc(sizeof(struct pmbus_boolean)
+ * data->max_booleans, GFP_KERNEL);
+ if (!data->booleans) {
+ dev_err(&client->dev, "No memory to allocate boolean data\n");
+ goto out_sensors;
+ }
+
+ data->labels = kzalloc(sizeof(struct pmbus_label) * data->max_labels,
+ GFP_KERNEL);
+ if (!data->labels) {
+ dev_err(&client->dev, "No memory to allocate label data\n");
+ goto out_booleans;
+ }
+
+ data->attributes = kzalloc(sizeof(struct attribute *)
+ * data->max_attributes, GFP_KERNEL);
+ if (!data->attributes) {
+ dev_err(&client->dev, "No memory to allocate attribute data\n");
+ goto out_labels;
+ }
+
+ pmbus_find_attributes(client, data);
+
+ /*
+ * If there are no attributes, something is wrong.
+ * Bail out instead of trying to register nothing.
+ */
+ if (!data->num_attributes) {
+ dev_err(&client->dev, "No attributes found\n");
+ ret = -ENODEV;
+ goto out_attributes;
+ }
+
+ /* Register sysfs hooks */
+ data->group.attrs = data->attributes;
+ ret = sysfs_create_group(&client->dev.kobj, &data->group);
+ if (ret) {
+ dev_err(&client->dev, "Failed to create sysfs entries\n");
+ goto out_attributes;
+ }
+ data->hwmon_dev = hwmon_device_register(&client->dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ ret = PTR_ERR(data->hwmon_dev);
+ dev_err(&client->dev, "Failed to register hwmon device\n");
+ goto out_hwmon_device_register;
+ }
+ return 0;
+
+out_hwmon_device_register:
+ sysfs_remove_group(&client->dev.kobj, &data->group);
+out_attributes:
+ kfree(data->attributes);
+out_labels:
+ kfree(data->labels);
+out_booleans:
+ kfree(data->booleans);
+out_sensors:
+ kfree(data->sensors);
+out_data:
+ kfree(data);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(pmbus_do_probe);
+
+int pmbus_do_remove(struct i2c_client *client)
+{
+ struct pmbus_data *data = i2c_get_clientdata(client);
+ hwmon_device_unregister(data->hwmon_dev);
+ sysfs_remove_group(&client->dev.kobj, &data->group);
+ kfree(data->attributes);
+ kfree(data->labels);
+ kfree(data->booleans);
+ kfree(data->sensors);
+ kfree(data);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(pmbus_do_remove);
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus core driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Hardware monitoring driver for UCD90xxx Sequencer and System Health
+ * Controller series
+ *
+ * Copyright (C) 2011 Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/i2c/pmbus.h>
+#include "pmbus.h"
+
+enum chips { ucd9000, ucd90120, ucd90124, ucd9090, ucd90910 };
+
+#define UCD9000_MONITOR_CONFIG 0xd5
+#define UCD9000_NUM_PAGES 0xd6
+#define UCD9000_FAN_CONFIG_INDEX 0xe7
+#define UCD9000_FAN_CONFIG 0xe8
+#define UCD9000_DEVICE_ID 0xfd
+
+#define UCD9000_MON_TYPE(x) (((x) >> 5) & 0x07)
+#define UCD9000_MON_PAGE(x) ((x) & 0x0f)
+
+#define UCD9000_MON_VOLTAGE 1
+#define UCD9000_MON_TEMPERATURE 2
+#define UCD9000_MON_CURRENT 3
+#define UCD9000_MON_VOLTAGE_HW 4
+
+#define UCD9000_NUM_FAN 4
+
+struct ucd9000_data {
+ u8 fan_data[UCD9000_NUM_FAN][I2C_SMBUS_BLOCK_MAX];
+ struct pmbus_driver_info info;
+};
+#define to_ucd9000_data(_info) container_of(_info, struct ucd9000_data, info)
+
+static int ucd9000_get_fan_config(struct i2c_client *client, int fan)
+{
+ int fan_config = 0;
+ struct ucd9000_data *data
+ = to_ucd9000_data(pmbus_get_driver_info(client));
+
+ if (data->fan_data[fan][3] & 1)
+ fan_config |= PB_FAN_2_INSTALLED; /* Use lower bit position */
+
+ /* Pulses/revolution */
+ fan_config |= (data->fan_data[fan][3] & 0x06) >> 1;
+
+ return fan_config;
+}
+
+static int ucd9000_read_byte_data(struct i2c_client *client, int page, int reg)
+{
+ int ret = 0;
+ int fan_config;
+
+ switch (reg) {
+ case PMBUS_FAN_CONFIG_12:
+ if (page)
+ return -EINVAL;
+
+ ret = ucd9000_get_fan_config(client, 0);
+ if (ret < 0)
+ return ret;
+ fan_config = ret << 4;
+ ret = ucd9000_get_fan_config(client, 1);
+ if (ret < 0)
+ return ret;
+ fan_config |= ret;
+ ret = fan_config;
+ break;
+ case PMBUS_FAN_CONFIG_34:
+ if (page)
+ return -EINVAL;
+
+ ret = ucd9000_get_fan_config(client, 2);
+ if (ret < 0)
+ return ret;
+ fan_config = ret << 4;
+ ret = ucd9000_get_fan_config(client, 3);
+ if (ret < 0)
+ return ret;
+ fan_config |= ret;
+ ret = fan_config;
+ break;
+ default:
+ ret = -ENODATA;
+ break;
+ }
+ return ret;
+}
+
+static const struct i2c_device_id ucd9000_id[] = {
+ {"ucd9000", ucd9000},
+ {"ucd90120", ucd90120},
+ {"ucd90124", ucd90124},
+ {"ucd9090", ucd9090},
+ {"ucd90910", ucd90910},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, ucd9000_id);
+
+static int ucd9000_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1];
+ struct ucd9000_data *data;
+ struct pmbus_driver_info *info;
+ const struct i2c_device_id *mid;
+ int i, ret;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA |
+ I2C_FUNC_SMBUS_BLOCK_DATA))
+ return -ENODEV;
+
+ ret = i2c_smbus_read_block_data(client, UCD9000_DEVICE_ID,
+ block_buffer);
+ if (ret < 0) {
+ dev_err(&client->dev, "Failed to read device ID\n");
+ return ret;
+ }
+ block_buffer[ret] = '\0';
+ dev_info(&client->dev, "Device ID %s\n", block_buffer);
+
+ mid = NULL;
+ for (i = 0; i < ARRAY_SIZE(ucd9000_id); i++) {
+ mid = &ucd9000_id[i];
+ if (!strncasecmp(mid->name, block_buffer, strlen(mid->name)))
+ break;
+ }
+ if (!mid || !strlen(mid->name)) {
+ dev_err(&client->dev, "Unsupported device\n");
+ return -ENODEV;
+ }
+
+ if (id->driver_data != ucd9000 && id->driver_data != mid->driver_data)
+ dev_notice(&client->dev,
+ "Device mismatch: Configured %s, detected %s\n",
+ id->name, mid->name);
+
+ data = kzalloc(sizeof(struct ucd9000_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ info = &data->info;
+
+ ret = i2c_smbus_read_byte_data(client, UCD9000_NUM_PAGES);
+ if (ret < 0) {
+ dev_err(&client->dev,
+ "Failed to read number of active pages\n");
+ goto out;
+ }
+ info->pages = ret;
+ if (!info->pages) {
+ dev_err(&client->dev, "No pages configured\n");
+ ret = -ENODEV;
+ goto out;
+ }
+
+ /* The internal temperature sensor is always active */
+ info->func[0] = PMBUS_HAVE_TEMP;
+
+ /* Everything else is configurable */
+ ret = i2c_smbus_read_block_data(client, UCD9000_MONITOR_CONFIG,
+ block_buffer);
+ if (ret <= 0) {
+ dev_err(&client->dev, "Failed to read configuration data\n");
+ ret = -ENODEV;
+ goto out;
+ }
+ for (i = 0; i < ret; i++) {
+ int page = UCD9000_MON_PAGE(block_buffer[i]);
+
+ if (page >= info->pages)
+ continue;
+
+ switch (UCD9000_MON_TYPE(block_buffer[i])) {
+ case UCD9000_MON_VOLTAGE:
+ case UCD9000_MON_VOLTAGE_HW:
+ info->func[page] |= PMBUS_HAVE_VOUT
+ | PMBUS_HAVE_STATUS_VOUT;
+ break;
+ case UCD9000_MON_TEMPERATURE:
+ info->func[page] |= PMBUS_HAVE_TEMP2
+ | PMBUS_HAVE_STATUS_TEMP;
+ break;
+ case UCD9000_MON_CURRENT:
+ info->func[page] |= PMBUS_HAVE_IOUT
+ | PMBUS_HAVE_STATUS_IOUT;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /* Fan configuration */
+ if (mid->driver_data == ucd90124) {
+ for (i = 0; i < UCD9000_NUM_FAN; i++) {
+ i2c_smbus_write_byte_data(client,
+ UCD9000_FAN_CONFIG_INDEX, i);
+ ret = i2c_smbus_read_block_data(client,
+ UCD9000_FAN_CONFIG,
+ data->fan_data[i]);
+ if (ret < 0)
+ goto out;
+ }
+ i2c_smbus_write_byte_data(client, UCD9000_FAN_CONFIG_INDEX, 0);
+
+ info->read_byte_data = ucd9000_read_byte_data;
+ info->func[0] |= PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12
+ | PMBUS_HAVE_FAN34 | PMBUS_HAVE_STATUS_FAN34;
+ }
+
+ ret = pmbus_do_probe(client, mid, info);
+ if (ret < 0)
+ goto out;
+ return 0;
+
+out:
+ kfree(data);
+ return ret;
+}
+
+static int ucd9000_remove(struct i2c_client *client)
+{
+ int ret;
+ struct ucd9000_data *data;
+
+ data = to_ucd9000_data(pmbus_get_driver_info(client));
+ ret = pmbus_do_remove(client);
+ kfree(data);
+ return ret;
+}
+
+
+/* This is the driver that will be inserted */
+static struct i2c_driver ucd9000_driver = {
+ .driver = {
+ .name = "ucd9000",
+ },
+ .probe = ucd9000_probe,
+ .remove = ucd9000_remove,
+ .id_table = ucd9000_id,
+};
+
+static int __init ucd9000_init(void)
+{
+ return i2c_add_driver(&ucd9000_driver);
+}
+
+static void __exit ucd9000_exit(void)
+{
+ i2c_del_driver(&ucd9000_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for TI UCD90xxx");
+MODULE_LICENSE("GPL");
+module_init(ucd9000_init);
+module_exit(ucd9000_exit);
--- /dev/null
+/*
+ * Hardware monitoring driver for ucd9200 series Digital PWM System Controllers
+ *
+ * Copyright (C) 2011 Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/i2c/pmbus.h>
+#include "pmbus.h"
+
+#define UCD9200_PHASE_INFO 0xd2
+#define UCD9200_DEVICE_ID 0xfd
+
+enum chips { ucd9200, ucd9220, ucd9222, ucd9224, ucd9240, ucd9244, ucd9246,
+ ucd9248 };
+
+static const struct i2c_device_id ucd9200_id[] = {
+ {"ucd9200", ucd9200},
+ {"ucd9220", ucd9220},
+ {"ucd9222", ucd9222},
+ {"ucd9224", ucd9224},
+ {"ucd9240", ucd9240},
+ {"ucd9244", ucd9244},
+ {"ucd9246", ucd9246},
+ {"ucd9248", ucd9248},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, ucd9200_id);
+
+static int ucd9200_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1];
+ struct pmbus_driver_info *info;
+ const struct i2c_device_id *mid;
+ int i, j, ret;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA |
+ I2C_FUNC_SMBUS_BLOCK_DATA))
+ return -ENODEV;
+
+ ret = i2c_smbus_read_block_data(client, UCD9200_DEVICE_ID,
+ block_buffer);
+ if (ret < 0) {
+ dev_err(&client->dev, "Failed to read device ID\n");
+ return ret;
+ }
+ block_buffer[ret] = '\0';
+ dev_info(&client->dev, "Device ID %s\n", block_buffer);
+
+ mid = NULL;
+ for (i = 0; i < ARRAY_SIZE(ucd9200_id); i++) {
+ mid = &ucd9200_id[i];
+ if (!strncasecmp(mid->name, block_buffer, strlen(mid->name)))
+ break;
+ }
+ if (!mid || !strlen(mid->name)) {
+ dev_err(&client->dev, "Unsupported device\n");
+ return -ENODEV;
+ }
+ if (id->driver_data != ucd9200 && id->driver_data != mid->driver_data)
+ dev_notice(&client->dev,
+ "Device mismatch: Configured %s, detected %s\n",
+ id->name, mid->name);
+
+ info = kzalloc(sizeof(struct pmbus_driver_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ ret = i2c_smbus_read_block_data(client, UCD9200_PHASE_INFO,
+ block_buffer);
+ if (ret < 0) {
+ dev_err(&client->dev, "Failed to read phase information\n");
+ goto out;
+ }
+
+ /*
+ * Calculate number of configured pages (rails) from PHASE_INFO
+ * register.
+ * Rails have to be sequential, so we can abort after finding
+ * the first unconfigured rail.
+ */
+ info->pages = 0;
+ for (i = 0; i < ret; i++) {
+ if (!block_buffer[i])
+ break;
+ info->pages++;
+ }
+ if (!info->pages) {
+ dev_err(&client->dev, "No rails configured\n");
+ ret = -ENODEV;
+ goto out;
+ }
+ dev_info(&client->dev, "%d rails configured\n", info->pages);
+
+ /*
+ * Set PHASE registers on all pages to 0xff to ensure that phase
+ * specific commands will apply to all phases of a given page (rail).
+ * This only affects the READ_IOUT and READ_TEMPERATURE2 registers.
+ * READ_IOUT will return the sum of currents of all phases of a rail,
+ * and READ_TEMPERATURE2 will return the maximum temperature detected
+ * for the the phases of the rail.
+ */
+ for (i = 0; i < info->pages; i++) {
+ /*
+ * Setting PAGE & PHASE fails once in a while for no obvious
+ * reason, so we need to retry a couple of times.
+ */
+ for (j = 0; j < 3; j++) {
+ ret = i2c_smbus_write_byte_data(client, PMBUS_PAGE, i);
+ if (ret < 0)
+ continue;
+ ret = i2c_smbus_write_byte_data(client, PMBUS_PHASE,
+ 0xff);
+ if (ret < 0)
+ continue;
+ break;
+ }
+ if (ret < 0) {
+ dev_err(&client->dev,
+ "Failed to initialize PHASE registers\n");
+ goto out;
+ }
+ }
+ if (info->pages > 1)
+ i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0);
+
+ info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT |
+ PMBUS_HAVE_IIN | PMBUS_HAVE_PIN |
+ PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
+ PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
+ PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP |
+ PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP;
+
+ for (i = 1; i < info->pages; i++)
+ info->func[i] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
+ PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
+ PMBUS_HAVE_POUT |
+ PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP;
+
+ /* ucd9240 supports a single fan */
+ if (mid->driver_data == ucd9240)
+ info->func[0] |= PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12;
+
+ ret = pmbus_do_probe(client, mid, info);
+ if (ret < 0)
+ goto out;
+ return 0;
+out:
+ kfree(info);
+ return ret;
+}
+
+static int ucd9200_remove(struct i2c_client *client)
+{
+ int ret;
+ const struct pmbus_driver_info *info;
+
+ info = pmbus_get_driver_info(client);
+ ret = pmbus_do_remove(client);
+ kfree(info);
+ return ret;
+}
+
+
+/* This is the driver that will be inserted */
+static struct i2c_driver ucd9200_driver = {
+ .driver = {
+ .name = "ucd9200",
+ },
+ .probe = ucd9200_probe,
+ .remove = ucd9200_remove,
+ .id_table = ucd9200_id,
+};
+
+static int __init ucd9200_init(void)
+{
+ return i2c_add_driver(&ucd9200_driver);
+}
+
+static void __exit ucd9200_exit(void)
+{
+ i2c_del_driver(&ucd9200_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for TI UCD922x, UCD924x");
+MODULE_LICENSE("GPL");
+module_init(ucd9200_init);
+module_exit(ucd9200_exit);
+++ /dev/null
-/*
- * Hardware monitoring driver for PMBus devices
- *
- * Copyright (c) 2010, 2011 Ericsson AB.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/delay.h>
-#include <linux/i2c/pmbus.h>
-#include "pmbus.h"
-
-/*
- * Constants needed to determine number of sensors, booleans, and labels.
- */
-#define PMBUS_MAX_INPUT_SENSORS 11 /* 6*volt, 3*curr, 2*power */
-#define PMBUS_VOUT_SENSORS_PER_PAGE 5 /* input, min, max, lcrit,
- crit */
-#define PMBUS_IOUT_SENSORS_PER_PAGE 4 /* input, min, max, crit */
-#define PMBUS_POUT_SENSORS_PER_PAGE 4 /* input, cap, max, crit */
-#define PMBUS_MAX_SENSORS_PER_FAN 1 /* input */
-#define PMBUS_MAX_SENSORS_PER_TEMP 5 /* input, min, max, lcrit,
- crit */
-
-#define PMBUS_MAX_INPUT_BOOLEANS 7 /* v: min_alarm, max_alarm,
- lcrit_alarm, crit_alarm;
- c: alarm, crit_alarm;
- p: crit_alarm */
-#define PMBUS_VOUT_BOOLEANS_PER_PAGE 4 /* min_alarm, max_alarm,
- lcrit_alarm, crit_alarm */
-#define PMBUS_IOUT_BOOLEANS_PER_PAGE 3 /* alarm, lcrit_alarm,
- crit_alarm */
-#define PMBUS_POUT_BOOLEANS_PER_PAGE 2 /* alarm, crit_alarm */
-#define PMBUS_MAX_BOOLEANS_PER_FAN 2 /* alarm, fault */
-#define PMBUS_MAX_BOOLEANS_PER_TEMP 4 /* min_alarm, max_alarm,
- lcrit_alarm, crit_alarm */
-
-#define PMBUS_MAX_INPUT_LABELS 4 /* vin, vcap, iin, pin */
-
-/*
- * status, status_vout, status_iout, status_fans, status_fan34, and status_temp
- * are paged. status_input is unpaged.
- */
-#define PB_NUM_STATUS_REG (PMBUS_PAGES * 6 + 1)
-
-/*
- * Index into status register array, per status register group
- */
-#define PB_STATUS_BASE 0
-#define PB_STATUS_VOUT_BASE (PB_STATUS_BASE + PMBUS_PAGES)
-#define PB_STATUS_IOUT_BASE (PB_STATUS_VOUT_BASE + PMBUS_PAGES)
-#define PB_STATUS_FAN_BASE (PB_STATUS_IOUT_BASE + PMBUS_PAGES)
-#define PB_STATUS_FAN34_BASE (PB_STATUS_FAN_BASE + PMBUS_PAGES)
-#define PB_STATUS_INPUT_BASE (PB_STATUS_FAN34_BASE + PMBUS_PAGES)
-#define PB_STATUS_TEMP_BASE (PB_STATUS_INPUT_BASE + 1)
-
-struct pmbus_sensor {
- char name[I2C_NAME_SIZE]; /* sysfs sensor name */
- struct sensor_device_attribute attribute;
- u8 page; /* page number */
- u8 reg; /* register */
- enum pmbus_sensor_classes class; /* sensor class */
- bool update; /* runtime sensor update needed */
- int data; /* Sensor data.
- Negative if there was a read error */
-};
-
-struct pmbus_boolean {
- char name[I2C_NAME_SIZE]; /* sysfs boolean name */
- struct sensor_device_attribute attribute;
-};
-
-struct pmbus_label {
- char name[I2C_NAME_SIZE]; /* sysfs label name */
- struct sensor_device_attribute attribute;
- char label[I2C_NAME_SIZE]; /* label */
-};
-
-struct pmbus_data {
- struct device *hwmon_dev;
-
- u32 flags; /* from platform data */
-
- int exponent; /* linear mode: exponent for output voltages */
-
- const struct pmbus_driver_info *info;
-
- int max_attributes;
- int num_attributes;
- struct attribute **attributes;
- struct attribute_group group;
-
- /*
- * Sensors cover both sensor and limit registers.
- */
- int max_sensors;
- int num_sensors;
- struct pmbus_sensor *sensors;
- /*
- * Booleans are used for alarms.
- * Values are determined from status registers.
- */
- int max_booleans;
- int num_booleans;
- struct pmbus_boolean *booleans;
- /*
- * Labels are used to map generic names (e.g., "in1")
- * to PMBus specific names (e.g., "vin" or "vout1").
- */
- int max_labels;
- int num_labels;
- struct pmbus_label *labels;
-
- struct mutex update_lock;
- bool valid;
- unsigned long last_updated; /* in jiffies */
-
- /*
- * A single status register covers multiple attributes,
- * so we keep them all together.
- */
- u8 status[PB_NUM_STATUS_REG];
-
- u8 currpage;
-};
-
-int pmbus_set_page(struct i2c_client *client, u8 page)
-{
- struct pmbus_data *data = i2c_get_clientdata(client);
- int rv = 0;
- int newpage;
-
- if (page != data->currpage) {
- rv = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page);
- newpage = i2c_smbus_read_byte_data(client, PMBUS_PAGE);
- if (newpage != page)
- rv = -EINVAL;
- else
- data->currpage = page;
- }
- return rv;
-}
-EXPORT_SYMBOL_GPL(pmbus_set_page);
-
-static int pmbus_write_byte(struct i2c_client *client, u8 page, u8 value)
-{
- int rv;
-
- rv = pmbus_set_page(client, page);
- if (rv < 0)
- return rv;
-
- return i2c_smbus_write_byte(client, value);
-}
-
-static int pmbus_write_word_data(struct i2c_client *client, u8 page, u8 reg,
- u16 word)
-{
- int rv;
-
- rv = pmbus_set_page(client, page);
- if (rv < 0)
- return rv;
-
- return i2c_smbus_write_word_data(client, reg, word);
-}
-
-int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg)
-{
- int rv;
-
- rv = pmbus_set_page(client, page);
- if (rv < 0)
- return rv;
-
- return i2c_smbus_read_word_data(client, reg);
-}
-EXPORT_SYMBOL_GPL(pmbus_read_word_data);
-
-static int pmbus_read_byte_data(struct i2c_client *client, u8 page, u8 reg)
-{
- int rv;
-
- rv = pmbus_set_page(client, page);
- if (rv < 0)
- return rv;
-
- return i2c_smbus_read_byte_data(client, reg);
-}
-
-static void pmbus_clear_fault_page(struct i2c_client *client, int page)
-{
- pmbus_write_byte(client, page, PMBUS_CLEAR_FAULTS);
-}
-
-void pmbus_clear_faults(struct i2c_client *client)
-{
- struct pmbus_data *data = i2c_get_clientdata(client);
- int i;
-
- for (i = 0; i < data->info->pages; i++)
- pmbus_clear_fault_page(client, i);
-}
-EXPORT_SYMBOL_GPL(pmbus_clear_faults);
-
-static int pmbus_check_status_cml(struct i2c_client *client, int page)
-{
- int status, status2;
-
- status = pmbus_read_byte_data(client, page, PMBUS_STATUS_BYTE);
- if (status < 0 || (status & PB_STATUS_CML)) {
- status2 = pmbus_read_byte_data(client, page, PMBUS_STATUS_CML);
- if (status2 < 0 || (status2 & PB_CML_FAULT_INVALID_COMMAND))
- return -EINVAL;
- }
- return 0;
-}
-
-bool pmbus_check_byte_register(struct i2c_client *client, int page, int reg)
-{
- int rv;
- struct pmbus_data *data = i2c_get_clientdata(client);
-
- rv = pmbus_read_byte_data(client, page, reg);
- if (rv >= 0 && !(data->flags & PMBUS_SKIP_STATUS_CHECK))
- rv = pmbus_check_status_cml(client, page);
- pmbus_clear_fault_page(client, page);
- return rv >= 0;
-}
-EXPORT_SYMBOL_GPL(pmbus_check_byte_register);
-
-bool pmbus_check_word_register(struct i2c_client *client, int page, int reg)
-{
- int rv;
- struct pmbus_data *data = i2c_get_clientdata(client);
-
- rv = pmbus_read_word_data(client, page, reg);
- if (rv >= 0 && !(data->flags & PMBUS_SKIP_STATUS_CHECK))
- rv = pmbus_check_status_cml(client, page);
- pmbus_clear_fault_page(client, page);
- return rv >= 0;
-}
-EXPORT_SYMBOL_GPL(pmbus_check_word_register);
-
-const struct pmbus_driver_info *pmbus_get_driver_info(struct i2c_client *client)
-{
- struct pmbus_data *data = i2c_get_clientdata(client);
-
- return data->info;
-}
-EXPORT_SYMBOL_GPL(pmbus_get_driver_info);
-
-/*
- * _pmbus_read_byte_data() is similar to pmbus_read_byte_data(), but checks if
- * a device specific mapping funcion exists and calls it if necessary.
- */
-static int _pmbus_read_byte_data(struct i2c_client *client, int page, int reg)
-{
- struct pmbus_data *data = i2c_get_clientdata(client);
- const struct pmbus_driver_info *info = data->info;
- int status;
-
- if (info->read_byte_data) {
- status = info->read_byte_data(client, page, reg);
- if (status != -ENODATA)
- return status;
- }
- return pmbus_read_byte_data(client, page, reg);
-}
-
-static struct pmbus_data *pmbus_update_device(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct pmbus_data *data = i2c_get_clientdata(client);
- const struct pmbus_driver_info *info = data->info;
-
- mutex_lock(&data->update_lock);
- if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
- int i;
-
- for (i = 0; i < info->pages; i++)
- data->status[PB_STATUS_BASE + i]
- = pmbus_read_byte_data(client, i,
- PMBUS_STATUS_BYTE);
- for (i = 0; i < info->pages; i++) {
- if (!(info->func[i] & PMBUS_HAVE_STATUS_VOUT))
- continue;
- data->status[PB_STATUS_VOUT_BASE + i]
- = _pmbus_read_byte_data(client, i, PMBUS_STATUS_VOUT);
- }
- for (i = 0; i < info->pages; i++) {
- if (!(info->func[i] & PMBUS_HAVE_STATUS_IOUT))
- continue;
- data->status[PB_STATUS_IOUT_BASE + i]
- = _pmbus_read_byte_data(client, i, PMBUS_STATUS_IOUT);
- }
- for (i = 0; i < info->pages; i++) {
- if (!(info->func[i] & PMBUS_HAVE_STATUS_TEMP))
- continue;
- data->status[PB_STATUS_TEMP_BASE + i]
- = _pmbus_read_byte_data(client, i,
- PMBUS_STATUS_TEMPERATURE);
- }
- for (i = 0; i < info->pages; i++) {
- if (!(info->func[i] & PMBUS_HAVE_STATUS_FAN12))
- continue;
- data->status[PB_STATUS_FAN_BASE + i]
- = _pmbus_read_byte_data(client, i,
- PMBUS_STATUS_FAN_12);
- }
-
- for (i = 0; i < info->pages; i++) {
- if (!(info->func[i] & PMBUS_HAVE_STATUS_FAN34))
- continue;
- data->status[PB_STATUS_FAN34_BASE + i]
- = _pmbus_read_byte_data(client, i,
- PMBUS_STATUS_FAN_34);
- }
-
- if (info->func[0] & PMBUS_HAVE_STATUS_INPUT)
- data->status[PB_STATUS_INPUT_BASE]
- = _pmbus_read_byte_data(client, 0,
- PMBUS_STATUS_INPUT);
-
- for (i = 0; i < data->num_sensors; i++) {
- struct pmbus_sensor *sensor = &data->sensors[i];
-
- if (!data->valid || sensor->update)
- sensor->data
- = pmbus_read_word_data(client, sensor->page,
- sensor->reg);
- }
- pmbus_clear_faults(client);
- data->last_updated = jiffies;
- data->valid = 1;
- }
- mutex_unlock(&data->update_lock);
- return data;
-}
-
-/*
- * Convert linear sensor values to milli- or micro-units
- * depending on sensor type.
- */
-static long pmbus_reg2data_linear(struct pmbus_data *data,
- struct pmbus_sensor *sensor)
-{
- s16 exponent;
- s32 mantissa;
- long val;
-
- if (sensor->class == PSC_VOLTAGE_OUT) { /* LINEAR16 */
- exponent = data->exponent;
- mantissa = (u16) sensor->data;
- } else { /* LINEAR11 */
- exponent = (sensor->data >> 11) & 0x001f;
- mantissa = sensor->data & 0x07ff;
-
- if (exponent > 0x0f)
- exponent |= 0xffe0; /* sign extend exponent */
- if (mantissa > 0x03ff)
- mantissa |= 0xfffff800; /* sign extend mantissa */
- }
-
- val = mantissa;
-
- /* scale result to milli-units for all sensors except fans */
- if (sensor->class != PSC_FAN)
- val = val * 1000L;
-
- /* scale result to micro-units for power sensors */
- if (sensor->class == PSC_POWER)
- val = val * 1000L;
-
- if (exponent >= 0)
- val <<= exponent;
- else
- val >>= -exponent;
-
- return val;
-}
-
-/*
- * Convert direct sensor values to milli- or micro-units
- * depending on sensor type.
- */
-static long pmbus_reg2data_direct(struct pmbus_data *data,
- struct pmbus_sensor *sensor)
-{
- long val = (s16) sensor->data;
- long m, b, R;
-
- m = data->info->m[sensor->class];
- b = data->info->b[sensor->class];
- R = data->info->R[sensor->class];
-
- if (m == 0)
- return 0;
-
- /* X = 1/m * (Y * 10^-R - b) */
- R = -R;
- /* scale result to milli-units for everything but fans */
- if (sensor->class != PSC_FAN) {
- R += 3;
- b *= 1000;
- }
-
- /* scale result to micro-units for power sensors */
- if (sensor->class == PSC_POWER) {
- R += 3;
- b *= 1000;
- }
-
- while (R > 0) {
- val *= 10;
- R--;
- }
- while (R < 0) {
- val = DIV_ROUND_CLOSEST(val, 10);
- R++;
- }
-
- return (val - b) / m;
-}
-
-static long pmbus_reg2data(struct pmbus_data *data, struct pmbus_sensor *sensor)
-{
- long val;
-
- if (data->info->direct[sensor->class])
- val = pmbus_reg2data_direct(data, sensor);
- else
- val = pmbus_reg2data_linear(data, sensor);
-
- return val;
-}
-
-#define MAX_MANTISSA (1023 * 1000)
-#define MIN_MANTISSA (511 * 1000)
-
-static u16 pmbus_data2reg_linear(struct pmbus_data *data,
- enum pmbus_sensor_classes class, long val)
-{
- s16 exponent = 0, mantissa;
- bool negative = false;
-
- /* simple case */
- if (val == 0)
- return 0;
-
- if (class == PSC_VOLTAGE_OUT) {
- /* LINEAR16 does not support negative voltages */
- if (val < 0)
- return 0;
-
- /*
- * For a static exponents, we don't have a choice
- * but to adjust the value to it.
- */
- if (data->exponent < 0)
- val <<= -data->exponent;
- else
- val >>= data->exponent;
- val = DIV_ROUND_CLOSEST(val, 1000);
- return val & 0xffff;
- }
-
- if (val < 0) {
- negative = true;
- val = -val;
- }
-
- /* Power is in uW. Convert to mW before converting. */
- if (class == PSC_POWER)
- val = DIV_ROUND_CLOSEST(val, 1000L);
-
- /*
- * For simplicity, convert fan data to milli-units
- * before calculating the exponent.
- */
- if (class == PSC_FAN)
- val = val * 1000;
-
- /* Reduce large mantissa until it fits into 10 bit */
- while (val >= MAX_MANTISSA && exponent < 15) {
- exponent++;
- val >>= 1;
- }
- /* Increase small mantissa to improve precision */
- while (val < MIN_MANTISSA && exponent > -15) {
- exponent--;
- val <<= 1;
- }
-
- /* Convert mantissa from milli-units to units */
- mantissa = DIV_ROUND_CLOSEST(val, 1000);
-
- /* Ensure that resulting number is within range */
- if (mantissa > 0x3ff)
- mantissa = 0x3ff;
-
- /* restore sign */
- if (negative)
- mantissa = -mantissa;
-
- /* Convert to 5 bit exponent, 11 bit mantissa */
- return (mantissa & 0x7ff) | ((exponent << 11) & 0xf800);
-}
-
-static u16 pmbus_data2reg_direct(struct pmbus_data *data,
- enum pmbus_sensor_classes class, long val)
-{
- long m, b, R;
-
- m = data->info->m[class];
- b = data->info->b[class];
- R = data->info->R[class];
-
- /* Power is in uW. Adjust R and b. */
- if (class == PSC_POWER) {
- R -= 3;
- b *= 1000;
- }
-
- /* Calculate Y = (m * X + b) * 10^R */
- if (class != PSC_FAN) {
- R -= 3; /* Adjust R and b for data in milli-units */
- b *= 1000;
- }
- val = val * m + b;
-
- while (R > 0) {
- val *= 10;
- R--;
- }
- while (R < 0) {
- val = DIV_ROUND_CLOSEST(val, 10);
- R++;
- }
-
- return val;
-}
-
-static u16 pmbus_data2reg(struct pmbus_data *data,
- enum pmbus_sensor_classes class, long val)
-{
- u16 regval;
-
- if (data->info->direct[class])
- regval = pmbus_data2reg_direct(data, class, val);
- else
- regval = pmbus_data2reg_linear(data, class, val);
-
- return regval;
-}
-
-/*
- * Return boolean calculated from converted data.
- * <index> defines a status register index and mask, and optionally
- * two sensor indexes.
- * The upper half-word references the two sensors,
- * two sensor indices.
- * The upper half-word references the two optional sensors,
- * the lower half word references status register and mask.
- * The function returns true if (status[reg] & mask) is true and,
- * if specified, if v1 >= v2.
- * To determine if an object exceeds upper limits, specify <v, limit>.
- * To determine if an object exceeds lower limits, specify <limit, v>.
- *
- * For booleans created with pmbus_add_boolean_reg(), only the lower 16 bits of
- * index are set. s1 and s2 (the sensor index values) are zero in this case.
- * The function returns true if (status[reg] & mask) is true.
- *
- * If the boolean was created with pmbus_add_boolean_cmp(), a comparison against
- * a specified limit has to be performed to determine the boolean result.
- * In this case, the function returns true if v1 >= v2 (where v1 and v2 are
- * sensor values referenced by sensor indices s1 and s2).
- *
- * To determine if an object exceeds upper limits, specify <s1,s2> = <v,limit>.
- * To determine if an object exceeds lower limits, specify <s1,s2> = <limit,v>.
- *
- * If a negative value is stored in any of the referenced registers, this value
- * reflects an error code which will be returned.
- */
-static int pmbus_get_boolean(struct pmbus_data *data, int index, int *val)
-{
- u8 s1 = (index >> 24) & 0xff;
- u8 s2 = (index >> 16) & 0xff;
- u8 reg = (index >> 8) & 0xff;
- u8 mask = index & 0xff;
- int status;
- u8 regval;
-
- status = data->status[reg];
- if (status < 0)
- return status;
-
- regval = status & mask;
- if (!s1 && !s2)
- *val = !!regval;
- else {
- long v1, v2;
- struct pmbus_sensor *sensor1, *sensor2;
-
- sensor1 = &data->sensors[s1];
- if (sensor1->data < 0)
- return sensor1->data;
- sensor2 = &data->sensors[s2];
- if (sensor2->data < 0)
- return sensor2->data;
-
- v1 = pmbus_reg2data(data, sensor1);
- v2 = pmbus_reg2data(data, sensor2);
- *val = !!(regval && v1 >= v2);
- }
- return 0;
-}
-
-static ssize_t pmbus_show_boolean(struct device *dev,
- struct device_attribute *da, char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
- struct pmbus_data *data = pmbus_update_device(dev);
- int val;
- int err;
-
- err = pmbus_get_boolean(data, attr->index, &val);
- if (err)
- return err;
- return snprintf(buf, PAGE_SIZE, "%d\n", val);
-}
-
-static ssize_t pmbus_show_sensor(struct device *dev,
- struct device_attribute *da, char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
- struct pmbus_data *data = pmbus_update_device(dev);
- struct pmbus_sensor *sensor;
-
- sensor = &data->sensors[attr->index];
- if (sensor->data < 0)
- return sensor->data;
-
- return snprintf(buf, PAGE_SIZE, "%ld\n", pmbus_reg2data(data, sensor));
-}
-
-static ssize_t pmbus_set_sensor(struct device *dev,
- struct device_attribute *devattr,
- const char *buf, size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct pmbus_data *data = i2c_get_clientdata(client);
- struct pmbus_sensor *sensor = &data->sensors[attr->index];
- ssize_t rv = count;
- long val = 0;
- int ret;
- u16 regval;
-
- if (strict_strtol(buf, 10, &val) < 0)
- return -EINVAL;
-
- mutex_lock(&data->update_lock);
- regval = pmbus_data2reg(data, sensor->class, val);
- ret = pmbus_write_word_data(client, sensor->page, sensor->reg, regval);
- if (ret < 0)
- rv = ret;
- else
- data->sensors[attr->index].data = regval;
- mutex_unlock(&data->update_lock);
- return rv;
-}
-
-static ssize_t pmbus_show_label(struct device *dev,
- struct device_attribute *da, char *buf)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct pmbus_data *data = i2c_get_clientdata(client);
- struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
-
- return snprintf(buf, PAGE_SIZE, "%s\n",
- data->labels[attr->index].label);
-}
-
-#define PMBUS_ADD_ATTR(data, _name, _idx, _mode, _type, _show, _set) \
-do { \
- struct sensor_device_attribute *a \
- = &data->_type##s[data->num_##_type##s].attribute; \
- BUG_ON(data->num_attributes >= data->max_attributes); \
- sysfs_attr_init(&a->dev_attr.attr); \
- a->dev_attr.attr.name = _name; \
- a->dev_attr.attr.mode = _mode; \
- a->dev_attr.show = _show; \
- a->dev_attr.store = _set; \
- a->index = _idx; \
- data->attributes[data->num_attributes] = &a->dev_attr.attr; \
- data->num_attributes++; \
-} while (0)
-
-#define PMBUS_ADD_GET_ATTR(data, _name, _type, _idx) \
- PMBUS_ADD_ATTR(data, _name, _idx, S_IRUGO, _type, \
- pmbus_show_##_type, NULL)
-
-#define PMBUS_ADD_SET_ATTR(data, _name, _type, _idx) \
- PMBUS_ADD_ATTR(data, _name, _idx, S_IWUSR | S_IRUGO, _type, \
- pmbus_show_##_type, pmbus_set_##_type)
-
-static void pmbus_add_boolean(struct pmbus_data *data,
- const char *name, const char *type, int seq,
- int idx)
-{
- struct pmbus_boolean *boolean;
-
- BUG_ON(data->num_booleans >= data->max_booleans);
-
- boolean = &data->booleans[data->num_booleans];
-
- snprintf(boolean->name, sizeof(boolean->name), "%s%d_%s",
- name, seq, type);
- PMBUS_ADD_GET_ATTR(data, boolean->name, boolean, idx);
- data->num_booleans++;
-}
-
-static void pmbus_add_boolean_reg(struct pmbus_data *data,
- const char *name, const char *type,
- int seq, int reg, int bit)
-{
- pmbus_add_boolean(data, name, type, seq, (reg << 8) | bit);
-}
-
-static void pmbus_add_boolean_cmp(struct pmbus_data *data,
- const char *name, const char *type,
- int seq, int i1, int i2, int reg, int mask)
-{
- pmbus_add_boolean(data, name, type, seq,
- (i1 << 24) | (i2 << 16) | (reg << 8) | mask);
-}
-
-static void pmbus_add_sensor(struct pmbus_data *data,
- const char *name, const char *type, int seq,
- int page, int reg, enum pmbus_sensor_classes class,
- bool update, bool readonly)
-{
- struct pmbus_sensor *sensor;
-
- BUG_ON(data->num_sensors >= data->max_sensors);
-
- sensor = &data->sensors[data->num_sensors];
- snprintf(sensor->name, sizeof(sensor->name), "%s%d_%s",
- name, seq, type);
- sensor->page = page;
- sensor->reg = reg;
- sensor->class = class;
- sensor->update = update;
- if (readonly)
- PMBUS_ADD_GET_ATTR(data, sensor->name, sensor,
- data->num_sensors);
- else
- PMBUS_ADD_SET_ATTR(data, sensor->name, sensor,
- data->num_sensors);
- data->num_sensors++;
-}
-
-static void pmbus_add_label(struct pmbus_data *data,
- const char *name, int seq,
- const char *lstring, int index)
-{
- struct pmbus_label *label;
-
- BUG_ON(data->num_labels >= data->max_labels);
-
- label = &data->labels[data->num_labels];
- snprintf(label->name, sizeof(label->name), "%s%d_label", name, seq);
- if (!index)
- strncpy(label->label, lstring, sizeof(label->label) - 1);
- else
- snprintf(label->label, sizeof(label->label), "%s%d", lstring,
- index);
-
- PMBUS_ADD_GET_ATTR(data, label->name, label, data->num_labels);
- data->num_labels++;
-}
-
-/*
- * Determine maximum number of sensors, booleans, and labels.
- * To keep things simple, only make a rough high estimate.
- */
-static void pmbus_find_max_attr(struct i2c_client *client,
- struct pmbus_data *data)
-{
- const struct pmbus_driver_info *info = data->info;
- int page, max_sensors, max_booleans, max_labels;
-
- max_sensors = PMBUS_MAX_INPUT_SENSORS;
- max_booleans = PMBUS_MAX_INPUT_BOOLEANS;
- max_labels = PMBUS_MAX_INPUT_LABELS;
-
- for (page = 0; page < info->pages; page++) {
- if (info->func[page] & PMBUS_HAVE_VOUT) {
- max_sensors += PMBUS_VOUT_SENSORS_PER_PAGE;
- max_booleans += PMBUS_VOUT_BOOLEANS_PER_PAGE;
- max_labels++;
- }
- if (info->func[page] & PMBUS_HAVE_IOUT) {
- max_sensors += PMBUS_IOUT_SENSORS_PER_PAGE;
- max_booleans += PMBUS_IOUT_BOOLEANS_PER_PAGE;
- max_labels++;
- }
- if (info->func[page] & PMBUS_HAVE_POUT) {
- max_sensors += PMBUS_POUT_SENSORS_PER_PAGE;
- max_booleans += PMBUS_POUT_BOOLEANS_PER_PAGE;
- max_labels++;
- }
- if (info->func[page] & PMBUS_HAVE_FAN12) {
- max_sensors += 2 * PMBUS_MAX_SENSORS_PER_FAN;
- max_booleans += 2 * PMBUS_MAX_BOOLEANS_PER_FAN;
- }
- if (info->func[page] & PMBUS_HAVE_FAN34) {
- max_sensors += 2 * PMBUS_MAX_SENSORS_PER_FAN;
- max_booleans += 2 * PMBUS_MAX_BOOLEANS_PER_FAN;
- }
- if (info->func[page] & PMBUS_HAVE_TEMP) {
- max_sensors += PMBUS_MAX_SENSORS_PER_TEMP;
- max_booleans += PMBUS_MAX_BOOLEANS_PER_TEMP;
- }
- if (info->func[page] & PMBUS_HAVE_TEMP2) {
- max_sensors += PMBUS_MAX_SENSORS_PER_TEMP;
- max_booleans += PMBUS_MAX_BOOLEANS_PER_TEMP;
- }
- if (info->func[page] & PMBUS_HAVE_TEMP3) {
- max_sensors += PMBUS_MAX_SENSORS_PER_TEMP;
- max_booleans += PMBUS_MAX_BOOLEANS_PER_TEMP;
- }
- }
- data->max_sensors = max_sensors;
- data->max_booleans = max_booleans;
- data->max_labels = max_labels;
- data->max_attributes = max_sensors + max_booleans + max_labels;
-}
-
-/*
- * Search for attributes. Allocate sensors, booleans, and labels as needed.
- */
-
-/*
- * The pmbus_limit_attr structure describes a single limit attribute
- * and its associated alarm attribute.
- */
-struct pmbus_limit_attr {
- u8 reg; /* Limit register */
- const char *attr; /* Attribute name */
- const char *alarm; /* Alarm attribute name */
- u32 sbit; /* Alarm attribute status bit */
-};
-
-/*
- * The pmbus_sensor_attr structure describes one sensor attribute. This
- * description includes a reference to the associated limit attributes.
- */
-struct pmbus_sensor_attr {
- u8 reg; /* sensor register */
- enum pmbus_sensor_classes class;/* sensor class */
- const char *label; /* sensor label */
- bool paged; /* true if paged sensor */
- bool update; /* true if update needed */
- bool compare; /* true if compare function needed */
- u32 func; /* sensor mask */
- u32 sfunc; /* sensor status mask */
- int sbase; /* status base register */
- u32 gbit; /* generic status bit */
- const struct pmbus_limit_attr *limit;/* limit registers */
- int nlimit; /* # of limit registers */
-};
-
-/*
- * Add a set of limit attributes and, if supported, the associated
- * alarm attributes.
- */
-static bool pmbus_add_limit_attrs(struct i2c_client *client,
- struct pmbus_data *data,
- const struct pmbus_driver_info *info,
- const char *name, int index, int page,
- int cbase,
- const struct pmbus_sensor_attr *attr)
-{
- const struct pmbus_limit_attr *l = attr->limit;
- int nlimit = attr->nlimit;
- bool have_alarm = false;
- int i, cindex;
-
- for (i = 0; i < nlimit; i++) {
- if (pmbus_check_word_register(client, page, l->reg)) {
- cindex = data->num_sensors;
- pmbus_add_sensor(data, name, l->attr, index, page,
- l->reg, attr->class, attr->update,
- false);
- if (info->func[page] & attr->sfunc) {
- if (attr->compare) {
- pmbus_add_boolean_cmp(data, name,
- l->alarm, index,
- cbase, cindex,
- attr->sbase + page, l->sbit);
- } else {
- pmbus_add_boolean_reg(data, name,
- l->alarm, index,
- attr->sbase + page, l->sbit);
- }
- have_alarm = true;
- }
- }
- l++;
- }
- return have_alarm;
-}
-
-static void pmbus_add_sensor_attrs_one(struct i2c_client *client,
- struct pmbus_data *data,
- const struct pmbus_driver_info *info,
- const char *name,
- int index, int page,
- const struct pmbus_sensor_attr *attr)
-{
- bool have_alarm;
- int cbase = data->num_sensors;
-
- if (attr->label)
- pmbus_add_label(data, name, index, attr->label,
- attr->paged ? page + 1 : 0);
- pmbus_add_sensor(data, name, "input", index, page, attr->reg,
- attr->class, true, true);
- if (attr->sfunc) {
- have_alarm = pmbus_add_limit_attrs(client, data, info, name,
- index, page, cbase, attr);
- /*
- * Add generic alarm attribute only if there are no individual
- * alarm attributes, and if there is a global alarm bit.
- */
- if (!have_alarm && attr->gbit)
- pmbus_add_boolean_reg(data, name, "alarm", index,
- PB_STATUS_BASE + page,
- attr->gbit);
- }
-}
-
-static void pmbus_add_sensor_attrs(struct i2c_client *client,
- struct pmbus_data *data,
- const char *name,
- const struct pmbus_sensor_attr *attrs,
- int nattrs)
-{
- const struct pmbus_driver_info *info = data->info;
- int index, i;
-
- index = 1;
- for (i = 0; i < nattrs; i++) {
- int page, pages;
-
- pages = attrs->paged ? info->pages : 1;
- for (page = 0; page < pages; page++) {
- if (!(info->func[page] & attrs->func))
- continue;
- pmbus_add_sensor_attrs_one(client, data, info, name,
- index, page, attrs);
- index++;
- }
- attrs++;
- }
-}
-
-static const struct pmbus_limit_attr vin_limit_attrs[] = {
- {
- .reg = PMBUS_VIN_UV_WARN_LIMIT,
- .attr = "min",
- .alarm = "min_alarm",
- .sbit = PB_VOLTAGE_UV_WARNING,
- }, {
- .reg = PMBUS_VIN_UV_FAULT_LIMIT,
- .attr = "lcrit",
- .alarm = "lcrit_alarm",
- .sbit = PB_VOLTAGE_UV_FAULT,
- }, {
- .reg = PMBUS_VIN_OV_WARN_LIMIT,
- .attr = "max",
- .alarm = "max_alarm",
- .sbit = PB_VOLTAGE_OV_WARNING,
- }, {
- .reg = PMBUS_VIN_OV_FAULT_LIMIT,
- .attr = "crit",
- .alarm = "crit_alarm",
- .sbit = PB_VOLTAGE_OV_FAULT,
- },
-};
-
-static const struct pmbus_limit_attr vout_limit_attrs[] = {
- {
- .reg = PMBUS_VOUT_UV_WARN_LIMIT,
- .attr = "min",
- .alarm = "min_alarm",
- .sbit = PB_VOLTAGE_UV_WARNING,
- }, {
- .reg = PMBUS_VOUT_UV_FAULT_LIMIT,
- .attr = "lcrit",
- .alarm = "lcrit_alarm",
- .sbit = PB_VOLTAGE_UV_FAULT,
- }, {
- .reg = PMBUS_VOUT_OV_WARN_LIMIT,
- .attr = "max",
- .alarm = "max_alarm",
- .sbit = PB_VOLTAGE_OV_WARNING,
- }, {
- .reg = PMBUS_VOUT_OV_FAULT_LIMIT,
- .attr = "crit",
- .alarm = "crit_alarm",
- .sbit = PB_VOLTAGE_OV_FAULT,
- }
-};
-
-static const struct pmbus_sensor_attr voltage_attributes[] = {
- {
- .reg = PMBUS_READ_VIN,
- .class = PSC_VOLTAGE_IN,
- .label = "vin",
- .func = PMBUS_HAVE_VIN,
- .sfunc = PMBUS_HAVE_STATUS_INPUT,
- .sbase = PB_STATUS_INPUT_BASE,
- .gbit = PB_STATUS_VIN_UV,
- .limit = vin_limit_attrs,
- .nlimit = ARRAY_SIZE(vin_limit_attrs),
- }, {
- .reg = PMBUS_READ_VCAP,
- .class = PSC_VOLTAGE_IN,
- .label = "vcap",
- .func = PMBUS_HAVE_VCAP,
- }, {
- .reg = PMBUS_READ_VOUT,
- .class = PSC_VOLTAGE_OUT,
- .label = "vout",
- .paged = true,
- .func = PMBUS_HAVE_VOUT,
- .sfunc = PMBUS_HAVE_STATUS_VOUT,
- .sbase = PB_STATUS_VOUT_BASE,
- .gbit = PB_STATUS_VOUT_OV,
- .limit = vout_limit_attrs,
- .nlimit = ARRAY_SIZE(vout_limit_attrs),
- }
-};
-
-/* Current attributes */
-
-static const struct pmbus_limit_attr iin_limit_attrs[] = {
- {
- .reg = PMBUS_IIN_OC_WARN_LIMIT,
- .attr = "max",
- .alarm = "max_alarm",
- .sbit = PB_IIN_OC_WARNING,
- }, {
- .reg = PMBUS_IIN_OC_FAULT_LIMIT,
- .attr = "crit",
- .alarm = "crit_alarm",
- .sbit = PB_IIN_OC_FAULT,
- }
-};
-
-static const struct pmbus_limit_attr iout_limit_attrs[] = {
- {
- .reg = PMBUS_IOUT_OC_WARN_LIMIT,
- .attr = "max",
- .alarm = "max_alarm",
- .sbit = PB_IOUT_OC_WARNING,
- }, {
- .reg = PMBUS_IOUT_UC_FAULT_LIMIT,
- .attr = "lcrit",
- .alarm = "lcrit_alarm",
- .sbit = PB_IOUT_UC_FAULT,
- }, {
- .reg = PMBUS_IOUT_OC_FAULT_LIMIT,
- .attr = "crit",
- .alarm = "crit_alarm",
- .sbit = PB_IOUT_OC_FAULT,
- }
-};
-
-static const struct pmbus_sensor_attr current_attributes[] = {
- {
- .reg = PMBUS_READ_IIN,
- .class = PSC_CURRENT_IN,
- .label = "iin",
- .func = PMBUS_HAVE_IIN,
- .sfunc = PMBUS_HAVE_STATUS_INPUT,
- .sbase = PB_STATUS_INPUT_BASE,
- .limit = iin_limit_attrs,
- .nlimit = ARRAY_SIZE(iin_limit_attrs),
- }, {
- .reg = PMBUS_READ_IOUT,
- .class = PSC_CURRENT_OUT,
- .label = "iout",
- .paged = true,
- .func = PMBUS_HAVE_IOUT,
- .sfunc = PMBUS_HAVE_STATUS_IOUT,
- .sbase = PB_STATUS_IOUT_BASE,
- .gbit = PB_STATUS_IOUT_OC,
- .limit = iout_limit_attrs,
- .nlimit = ARRAY_SIZE(iout_limit_attrs),
- }
-};
-
-/* Power attributes */
-
-static const struct pmbus_limit_attr pin_limit_attrs[] = {
- {
- .reg = PMBUS_PIN_OP_WARN_LIMIT,
- .attr = "max",
- .alarm = "alarm",
- .sbit = PB_PIN_OP_WARNING,
- }
-};
-
-static const struct pmbus_limit_attr pout_limit_attrs[] = {
- {
- .reg = PMBUS_POUT_MAX,
- .attr = "cap",
- .alarm = "cap_alarm",
- .sbit = PB_POWER_LIMITING,
- }, {
- .reg = PMBUS_POUT_OP_WARN_LIMIT,
- .attr = "max",
- .alarm = "max_alarm",
- .sbit = PB_POUT_OP_WARNING,
- }, {
- .reg = PMBUS_POUT_OP_FAULT_LIMIT,
- .attr = "crit",
- .alarm = "crit_alarm",
- .sbit = PB_POUT_OP_FAULT,
- }
-};
-
-static const struct pmbus_sensor_attr power_attributes[] = {
- {
- .reg = PMBUS_READ_PIN,
- .class = PSC_POWER,
- .label = "pin",
- .func = PMBUS_HAVE_PIN,
- .sfunc = PMBUS_HAVE_STATUS_INPUT,
- .sbase = PB_STATUS_INPUT_BASE,
- .limit = pin_limit_attrs,
- .nlimit = ARRAY_SIZE(pin_limit_attrs),
- }, {
- .reg = PMBUS_READ_POUT,
- .class = PSC_POWER,
- .label = "pout",
- .paged = true,
- .func = PMBUS_HAVE_POUT,
- .sfunc = PMBUS_HAVE_STATUS_IOUT,
- .sbase = PB_STATUS_IOUT_BASE,
- .limit = pout_limit_attrs,
- .nlimit = ARRAY_SIZE(pout_limit_attrs),
- }
-};
-
-/* Temperature atributes */
-
-static const struct pmbus_limit_attr temp_limit_attrs[] = {
- {
- .reg = PMBUS_UT_WARN_LIMIT,
- .attr = "min",
- .alarm = "min_alarm",
- .sbit = PB_TEMP_UT_WARNING,
- }, {
- .reg = PMBUS_UT_FAULT_LIMIT,
- .attr = "lcrit",
- .alarm = "lcrit_alarm",
- .sbit = PB_TEMP_UT_FAULT,
- }, {
- .reg = PMBUS_OT_WARN_LIMIT,
- .attr = "max",
- .alarm = "max_alarm",
- .sbit = PB_TEMP_OT_WARNING,
- }, {
- .reg = PMBUS_OT_FAULT_LIMIT,
- .attr = "crit",
- .alarm = "crit_alarm",
- .sbit = PB_TEMP_OT_FAULT,
- }
-};
-
-static const struct pmbus_sensor_attr temp_attributes[] = {
- {
- .reg = PMBUS_READ_TEMPERATURE_1,
- .class = PSC_TEMPERATURE,
- .paged = true,
- .update = true,
- .compare = true,
- .func = PMBUS_HAVE_TEMP,
- .sfunc = PMBUS_HAVE_STATUS_TEMP,
- .sbase = PB_STATUS_TEMP_BASE,
- .gbit = PB_STATUS_TEMPERATURE,
- .limit = temp_limit_attrs,
- .nlimit = ARRAY_SIZE(temp_limit_attrs),
- }, {
- .reg = PMBUS_READ_TEMPERATURE_2,
- .class = PSC_TEMPERATURE,
- .paged = true,
- .update = true,
- .compare = true,
- .func = PMBUS_HAVE_TEMP2,
- .sfunc = PMBUS_HAVE_STATUS_TEMP,
- .sbase = PB_STATUS_TEMP_BASE,
- .gbit = PB_STATUS_TEMPERATURE,
- .limit = temp_limit_attrs,
- .nlimit = ARRAY_SIZE(temp_limit_attrs),
- }, {
- .reg = PMBUS_READ_TEMPERATURE_3,
- .class = PSC_TEMPERATURE,
- .paged = true,
- .update = true,
- .compare = true,
- .func = PMBUS_HAVE_TEMP3,
- .sfunc = PMBUS_HAVE_STATUS_TEMP,
- .sbase = PB_STATUS_TEMP_BASE,
- .gbit = PB_STATUS_TEMPERATURE,
- .limit = temp_limit_attrs,
- .nlimit = ARRAY_SIZE(temp_limit_attrs),
- }
-};
-
-static const int pmbus_fan_registers[] = {
- PMBUS_READ_FAN_SPEED_1,
- PMBUS_READ_FAN_SPEED_2,
- PMBUS_READ_FAN_SPEED_3,
- PMBUS_READ_FAN_SPEED_4
-};
-
-static const int pmbus_fan_config_registers[] = {
- PMBUS_FAN_CONFIG_12,
- PMBUS_FAN_CONFIG_12,
- PMBUS_FAN_CONFIG_34,
- PMBUS_FAN_CONFIG_34
-};
-
-static const int pmbus_fan_status_registers[] = {
- PMBUS_STATUS_FAN_12,
- PMBUS_STATUS_FAN_12,
- PMBUS_STATUS_FAN_34,
- PMBUS_STATUS_FAN_34
-};
-
-static const u32 pmbus_fan_flags[] = {
- PMBUS_HAVE_FAN12,
- PMBUS_HAVE_FAN12,
- PMBUS_HAVE_FAN34,
- PMBUS_HAVE_FAN34
-};
-
-static const u32 pmbus_fan_status_flags[] = {
- PMBUS_HAVE_STATUS_FAN12,
- PMBUS_HAVE_STATUS_FAN12,
- PMBUS_HAVE_STATUS_FAN34,
- PMBUS_HAVE_STATUS_FAN34
-};
-
-/* Fans */
-static void pmbus_add_fan_attributes(struct i2c_client *client,
- struct pmbus_data *data)
-{
- const struct pmbus_driver_info *info = data->info;
- int index = 1;
- int page;
-
- for (page = 0; page < info->pages; page++) {
- int f;
-
- for (f = 0; f < ARRAY_SIZE(pmbus_fan_registers); f++) {
- int regval;
-
- if (!(info->func[page] & pmbus_fan_flags[f]))
- break;
-
- if (!pmbus_check_word_register(client, page,
- pmbus_fan_registers[f]))
- break;
-
- /*
- * Skip fan if not installed.
- * Each fan configuration register covers multiple fans,
- * so we have to do some magic.
- */
- regval = _pmbus_read_byte_data(client, page,
- pmbus_fan_config_registers[f]);
- if (regval < 0 ||
- (!(regval & (PB_FAN_1_INSTALLED >> ((f & 1) * 4)))))
- continue;
-
- pmbus_add_sensor(data, "fan", "input", index, page,
- pmbus_fan_registers[f], PSC_FAN, true,
- true);
-
- /*
- * Each fan status register covers multiple fans,
- * so we have to do some magic.
- */
- if ((info->func[page] & pmbus_fan_status_flags[f]) &&
- pmbus_check_byte_register(client,
- page, pmbus_fan_status_registers[f])) {
- int base;
-
- if (f > 1) /* fan 3, 4 */
- base = PB_STATUS_FAN34_BASE + page;
- else
- base = PB_STATUS_FAN_BASE + page;
- pmbus_add_boolean_reg(data, "fan", "alarm",
- index, base,
- PB_FAN_FAN1_WARNING >> (f & 1));
- pmbus_add_boolean_reg(data, "fan", "fault",
- index, base,
- PB_FAN_FAN1_FAULT >> (f & 1));
- }
- index++;
- }
- }
-}
-
-static void pmbus_find_attributes(struct i2c_client *client,
- struct pmbus_data *data)
-{
- /* Voltage sensors */
- pmbus_add_sensor_attrs(client, data, "in", voltage_attributes,
- ARRAY_SIZE(voltage_attributes));
-
- /* Current sensors */
- pmbus_add_sensor_attrs(client, data, "curr", current_attributes,
- ARRAY_SIZE(current_attributes));
-
- /* Power sensors */
- pmbus_add_sensor_attrs(client, data, "power", power_attributes,
- ARRAY_SIZE(power_attributes));
-
- /* Temperature sensors */
- pmbus_add_sensor_attrs(client, data, "temp", temp_attributes,
- ARRAY_SIZE(temp_attributes));
-
- /* Fans */
- pmbus_add_fan_attributes(client, data);
-}
-
-/*
- * Identify chip parameters.
- * This function is called for all chips.
- */
-static int pmbus_identify_common(struct i2c_client *client,
- struct pmbus_data *data)
-{
- int vout_mode = -1, exponent;
-
- if (pmbus_check_byte_register(client, 0, PMBUS_VOUT_MODE))
- vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
- if (vout_mode >= 0 && vout_mode != 0xff) {
- /*
- * Not all chips support the VOUT_MODE command,
- * so a failure to read it is not an error.
- */
- switch (vout_mode >> 5) {
- case 0: /* linear mode */
- if (data->info->direct[PSC_VOLTAGE_OUT])
- return -ENODEV;
-
- exponent = vout_mode & 0x1f;
- /* and sign-extend it */
- if (exponent & 0x10)
- exponent |= ~0x1f;
- data->exponent = exponent;
- break;
- case 2: /* direct mode */
- if (!data->info->direct[PSC_VOLTAGE_OUT])
- return -ENODEV;
- break;
- default:
- return -ENODEV;
- }
- }
-
- /* Determine maximum number of sensors, booleans, and labels */
- pmbus_find_max_attr(client, data);
- pmbus_clear_fault_page(client, 0);
- return 0;
-}
-
-int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
- struct pmbus_driver_info *info)
-{
- const struct pmbus_platform_data *pdata = client->dev.platform_data;
- struct pmbus_data *data;
- int ret;
-
- if (!info) {
- dev_err(&client->dev, "Missing chip information");
- return -ENODEV;
- }
-
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WRITE_BYTE
- | I2C_FUNC_SMBUS_BYTE_DATA
- | I2C_FUNC_SMBUS_WORD_DATA))
- return -ENODEV;
-
- data = kzalloc(sizeof(*data), GFP_KERNEL);
- if (!data) {
- dev_err(&client->dev, "No memory to allocate driver data\n");
- return -ENOMEM;
- }
-
- i2c_set_clientdata(client, data);
- mutex_init(&data->update_lock);
-
- /* Bail out if PMBus status register does not exist. */
- if (i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE) < 0) {
- dev_err(&client->dev, "PMBus status register not found\n");
- ret = -ENODEV;
- goto out_data;
- }
-
- if (pdata)
- data->flags = pdata->flags;
- data->info = info;
-
- pmbus_clear_faults(client);
-
- if (info->identify) {
- ret = (*info->identify)(client, info);
- if (ret < 0) {
- dev_err(&client->dev, "Chip identification failed\n");
- goto out_data;
- }
- }
-
- if (info->pages <= 0 || info->pages > PMBUS_PAGES) {
- dev_err(&client->dev, "Bad number of PMBus pages: %d\n",
- info->pages);
- ret = -EINVAL;
- goto out_data;
- }
- /*
- * Bail out if more than one page was configured, but we can not
- * select the highest page. This is an indication that the wrong
- * chip type was selected. Better bail out now than keep
- * returning errors later on.
- */
- if (info->pages > 1 && pmbus_set_page(client, info->pages - 1) < 0) {
- dev_err(&client->dev, "Failed to select page %d\n",
- info->pages - 1);
- ret = -EINVAL;
- goto out_data;
- }
-
- ret = pmbus_identify_common(client, data);
- if (ret < 0) {
- dev_err(&client->dev, "Failed to identify chip capabilities\n");
- goto out_data;
- }
-
- ret = -ENOMEM;
- data->sensors = kzalloc(sizeof(struct pmbus_sensor) * data->max_sensors,
- GFP_KERNEL);
- if (!data->sensors) {
- dev_err(&client->dev, "No memory to allocate sensor data\n");
- goto out_data;
- }
-
- data->booleans = kzalloc(sizeof(struct pmbus_boolean)
- * data->max_booleans, GFP_KERNEL);
- if (!data->booleans) {
- dev_err(&client->dev, "No memory to allocate boolean data\n");
- goto out_sensors;
- }
-
- data->labels = kzalloc(sizeof(struct pmbus_label) * data->max_labels,
- GFP_KERNEL);
- if (!data->labels) {
- dev_err(&client->dev, "No memory to allocate label data\n");
- goto out_booleans;
- }
-
- data->attributes = kzalloc(sizeof(struct attribute *)
- * data->max_attributes, GFP_KERNEL);
- if (!data->attributes) {
- dev_err(&client->dev, "No memory to allocate attribute data\n");
- goto out_labels;
- }
-
- pmbus_find_attributes(client, data);
-
- /*
- * If there are no attributes, something is wrong.
- * Bail out instead of trying to register nothing.
- */
- if (!data->num_attributes) {
- dev_err(&client->dev, "No attributes found\n");
- ret = -ENODEV;
- goto out_attributes;
- }
-
- /* Register sysfs hooks */
- data->group.attrs = data->attributes;
- ret = sysfs_create_group(&client->dev.kobj, &data->group);
- if (ret) {
- dev_err(&client->dev, "Failed to create sysfs entries\n");
- goto out_attributes;
- }
- data->hwmon_dev = hwmon_device_register(&client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- ret = PTR_ERR(data->hwmon_dev);
- dev_err(&client->dev, "Failed to register hwmon device\n");
- goto out_hwmon_device_register;
- }
- return 0;
-
-out_hwmon_device_register:
- sysfs_remove_group(&client->dev.kobj, &data->group);
-out_attributes:
- kfree(data->attributes);
-out_labels:
- kfree(data->labels);
-out_booleans:
- kfree(data->booleans);
-out_sensors:
- kfree(data->sensors);
-out_data:
- kfree(data);
- return ret;
-}
-EXPORT_SYMBOL_GPL(pmbus_do_probe);
-
-int pmbus_do_remove(struct i2c_client *client)
-{
- struct pmbus_data *data = i2c_get_clientdata(client);
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &data->group);
- kfree(data->attributes);
- kfree(data->labels);
- kfree(data->booleans);
- kfree(data->sensors);
- kfree(data);
- return 0;
-}
-EXPORT_SYMBOL_GPL(pmbus_do_remove);
-
-MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("PMBus core driver");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * Hardware monitoring driver for UCD90xxx Sequencer and System Health
- * Controller series
- *
- * Copyright (C) 2011 Ericsson AB.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/i2c/pmbus.h>
-#include "pmbus.h"
-
-enum chips { ucd9000, ucd90120, ucd90124, ucd9090, ucd90910 };
-
-#define UCD9000_MONITOR_CONFIG 0xd5
-#define UCD9000_NUM_PAGES 0xd6
-#define UCD9000_FAN_CONFIG_INDEX 0xe7
-#define UCD9000_FAN_CONFIG 0xe8
-#define UCD9000_DEVICE_ID 0xfd
-
-#define UCD9000_MON_TYPE(x) (((x) >> 5) & 0x07)
-#define UCD9000_MON_PAGE(x) ((x) & 0x0f)
-
-#define UCD9000_MON_VOLTAGE 1
-#define UCD9000_MON_TEMPERATURE 2
-#define UCD9000_MON_CURRENT 3
-#define UCD9000_MON_VOLTAGE_HW 4
-
-#define UCD9000_NUM_FAN 4
-
-struct ucd9000_data {
- u8 fan_data[UCD9000_NUM_FAN][I2C_SMBUS_BLOCK_MAX];
- struct pmbus_driver_info info;
-};
-#define to_ucd9000_data(_info) container_of(_info, struct ucd9000_data, info)
-
-static int ucd9000_get_fan_config(struct i2c_client *client, int fan)
-{
- int fan_config = 0;
- struct ucd9000_data *data
- = to_ucd9000_data(pmbus_get_driver_info(client));
-
- if (data->fan_data[fan][3] & 1)
- fan_config |= PB_FAN_2_INSTALLED; /* Use lower bit position */
-
- /* Pulses/revolution */
- fan_config |= (data->fan_data[fan][3] & 0x06) >> 1;
-
- return fan_config;
-}
-
-static int ucd9000_read_byte_data(struct i2c_client *client, int page, int reg)
-{
- int ret = 0;
- int fan_config;
-
- switch (reg) {
- case PMBUS_FAN_CONFIG_12:
- if (page)
- return -EINVAL;
-
- ret = ucd9000_get_fan_config(client, 0);
- if (ret < 0)
- return ret;
- fan_config = ret << 4;
- ret = ucd9000_get_fan_config(client, 1);
- if (ret < 0)
- return ret;
- fan_config |= ret;
- ret = fan_config;
- break;
- case PMBUS_FAN_CONFIG_34:
- if (page)
- return -EINVAL;
-
- ret = ucd9000_get_fan_config(client, 2);
- if (ret < 0)
- return ret;
- fan_config = ret << 4;
- ret = ucd9000_get_fan_config(client, 3);
- if (ret < 0)
- return ret;
- fan_config |= ret;
- ret = fan_config;
- break;
- default:
- ret = -ENODATA;
- break;
- }
- return ret;
-}
-
-static const struct i2c_device_id ucd9000_id[] = {
- {"ucd9000", ucd9000},
- {"ucd90120", ucd90120},
- {"ucd90124", ucd90124},
- {"ucd9090", ucd9090},
- {"ucd90910", ucd90910},
- {}
-};
-MODULE_DEVICE_TABLE(i2c, ucd9000_id);
-
-static int ucd9000_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1];
- struct ucd9000_data *data;
- struct pmbus_driver_info *info;
- const struct i2c_device_id *mid;
- int i, ret;
-
- if (!i2c_check_functionality(client->adapter,
- I2C_FUNC_SMBUS_BYTE_DATA |
- I2C_FUNC_SMBUS_BLOCK_DATA))
- return -ENODEV;
-
- ret = i2c_smbus_read_block_data(client, UCD9000_DEVICE_ID,
- block_buffer);
- if (ret < 0) {
- dev_err(&client->dev, "Failed to read device ID\n");
- return ret;
- }
- block_buffer[ret] = '\0';
- dev_info(&client->dev, "Device ID %s\n", block_buffer);
-
- mid = NULL;
- for (i = 0; i < ARRAY_SIZE(ucd9000_id); i++) {
- mid = &ucd9000_id[i];
- if (!strncasecmp(mid->name, block_buffer, strlen(mid->name)))
- break;
- }
- if (!mid || !strlen(mid->name)) {
- dev_err(&client->dev, "Unsupported device\n");
- return -ENODEV;
- }
-
- if (id->driver_data != ucd9000 && id->driver_data != mid->driver_data)
- dev_notice(&client->dev,
- "Device mismatch: Configured %s, detected %s\n",
- id->name, mid->name);
-
- data = kzalloc(sizeof(struct ucd9000_data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
- info = &data->info;
-
- ret = i2c_smbus_read_byte_data(client, UCD9000_NUM_PAGES);
- if (ret < 0) {
- dev_err(&client->dev,
- "Failed to read number of active pages\n");
- goto out;
- }
- info->pages = ret;
- if (!info->pages) {
- dev_err(&client->dev, "No pages configured\n");
- ret = -ENODEV;
- goto out;
- }
-
- /* The internal temperature sensor is always active */
- info->func[0] = PMBUS_HAVE_TEMP;
-
- /* Everything else is configurable */
- ret = i2c_smbus_read_block_data(client, UCD9000_MONITOR_CONFIG,
- block_buffer);
- if (ret <= 0) {
- dev_err(&client->dev, "Failed to read configuration data\n");
- ret = -ENODEV;
- goto out;
- }
- for (i = 0; i < ret; i++) {
- int page = UCD9000_MON_PAGE(block_buffer[i]);
-
- if (page >= info->pages)
- continue;
-
- switch (UCD9000_MON_TYPE(block_buffer[i])) {
- case UCD9000_MON_VOLTAGE:
- case UCD9000_MON_VOLTAGE_HW:
- info->func[page] |= PMBUS_HAVE_VOUT
- | PMBUS_HAVE_STATUS_VOUT;
- break;
- case UCD9000_MON_TEMPERATURE:
- info->func[page] |= PMBUS_HAVE_TEMP2
- | PMBUS_HAVE_STATUS_TEMP;
- break;
- case UCD9000_MON_CURRENT:
- info->func[page] |= PMBUS_HAVE_IOUT
- | PMBUS_HAVE_STATUS_IOUT;
- break;
- default:
- break;
- }
- }
-
- /* Fan configuration */
- if (mid->driver_data == ucd90124) {
- for (i = 0; i < UCD9000_NUM_FAN; i++) {
- i2c_smbus_write_byte_data(client,
- UCD9000_FAN_CONFIG_INDEX, i);
- ret = i2c_smbus_read_block_data(client,
- UCD9000_FAN_CONFIG,
- data->fan_data[i]);
- if (ret < 0)
- goto out;
- }
- i2c_smbus_write_byte_data(client, UCD9000_FAN_CONFIG_INDEX, 0);
-
- info->read_byte_data = ucd9000_read_byte_data;
- info->func[0] |= PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12
- | PMBUS_HAVE_FAN34 | PMBUS_HAVE_STATUS_FAN34;
- }
-
- ret = pmbus_do_probe(client, mid, info);
- if (ret < 0)
- goto out;
- return 0;
-
-out:
- kfree(data);
- return ret;
-}
-
-static int ucd9000_remove(struct i2c_client *client)
-{
- int ret;
- struct ucd9000_data *data;
-
- data = to_ucd9000_data(pmbus_get_driver_info(client));
- ret = pmbus_do_remove(client);
- kfree(data);
- return ret;
-}
-
-
-/* This is the driver that will be inserted */
-static struct i2c_driver ucd9000_driver = {
- .driver = {
- .name = "ucd9000",
- },
- .probe = ucd9000_probe,
- .remove = ucd9000_remove,
- .id_table = ucd9000_id,
-};
-
-static int __init ucd9000_init(void)
-{
- return i2c_add_driver(&ucd9000_driver);
-}
-
-static void __exit ucd9000_exit(void)
-{
- i2c_del_driver(&ucd9000_driver);
-}
-
-MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("PMBus driver for TI UCD90xxx");
-MODULE_LICENSE("GPL");
-module_init(ucd9000_init);
-module_exit(ucd9000_exit);
+++ /dev/null
-/*
- * Hardware monitoring driver for ucd9200 series Digital PWM System Controllers
- *
- * Copyright (C) 2011 Ericsson AB.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/i2c/pmbus.h>
-#include "pmbus.h"
-
-#define UCD9200_PHASE_INFO 0xd2
-#define UCD9200_DEVICE_ID 0xfd
-
-enum chips { ucd9200, ucd9220, ucd9222, ucd9224, ucd9240, ucd9244, ucd9246,
- ucd9248 };
-
-static const struct i2c_device_id ucd9200_id[] = {
- {"ucd9200", ucd9200},
- {"ucd9220", ucd9220},
- {"ucd9222", ucd9222},
- {"ucd9224", ucd9224},
- {"ucd9240", ucd9240},
- {"ucd9244", ucd9244},
- {"ucd9246", ucd9246},
- {"ucd9248", ucd9248},
- {}
-};
-MODULE_DEVICE_TABLE(i2c, ucd9200_id);
-
-static int ucd9200_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1];
- struct pmbus_driver_info *info;
- const struct i2c_device_id *mid;
- int i, j, ret;
-
- if (!i2c_check_functionality(client->adapter,
- I2C_FUNC_SMBUS_BYTE_DATA |
- I2C_FUNC_SMBUS_BLOCK_DATA))
- return -ENODEV;
-
- ret = i2c_smbus_read_block_data(client, UCD9200_DEVICE_ID,
- block_buffer);
- if (ret < 0) {
- dev_err(&client->dev, "Failed to read device ID\n");
- return ret;
- }
- block_buffer[ret] = '\0';
- dev_info(&client->dev, "Device ID %s\n", block_buffer);
-
- mid = NULL;
- for (i = 0; i < ARRAY_SIZE(ucd9200_id); i++) {
- mid = &ucd9200_id[i];
- if (!strncasecmp(mid->name, block_buffer, strlen(mid->name)))
- break;
- }
- if (!mid || !strlen(mid->name)) {
- dev_err(&client->dev, "Unsupported device\n");
- return -ENODEV;
- }
- if (id->driver_data != ucd9200 && id->driver_data != mid->driver_data)
- dev_notice(&client->dev,
- "Device mismatch: Configured %s, detected %s\n",
- id->name, mid->name);
-
- info = kzalloc(sizeof(struct pmbus_driver_info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- ret = i2c_smbus_read_block_data(client, UCD9200_PHASE_INFO,
- block_buffer);
- if (ret < 0) {
- dev_err(&client->dev, "Failed to read phase information\n");
- goto out;
- }
-
- /*
- * Calculate number of configured pages (rails) from PHASE_INFO
- * register.
- * Rails have to be sequential, so we can abort after finding
- * the first unconfigured rail.
- */
- info->pages = 0;
- for (i = 0; i < ret; i++) {
- if (!block_buffer[i])
- break;
- info->pages++;
- }
- if (!info->pages) {
- dev_err(&client->dev, "No rails configured\n");
- ret = -ENODEV;
- goto out;
- }
- dev_info(&client->dev, "%d rails configured\n", info->pages);
-
- /*
- * Set PHASE registers on all pages to 0xff to ensure that phase
- * specific commands will apply to all phases of a given page (rail).
- * This only affects the READ_IOUT and READ_TEMPERATURE2 registers.
- * READ_IOUT will return the sum of currents of all phases of a rail,
- * and READ_TEMPERATURE2 will return the maximum temperature detected
- * for the the phases of the rail.
- */
- for (i = 0; i < info->pages; i++) {
- /*
- * Setting PAGE & PHASE fails once in a while for no obvious
- * reason, so we need to retry a couple of times.
- */
- for (j = 0; j < 3; j++) {
- ret = i2c_smbus_write_byte_data(client, PMBUS_PAGE, i);
- if (ret < 0)
- continue;
- ret = i2c_smbus_write_byte_data(client, PMBUS_PHASE,
- 0xff);
- if (ret < 0)
- continue;
- break;
- }
- if (ret < 0) {
- dev_err(&client->dev,
- "Failed to initialize PHASE registers\n");
- goto out;
- }
- }
- if (info->pages > 1)
- i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0);
-
- info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT |
- PMBUS_HAVE_IIN | PMBUS_HAVE_PIN |
- PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
- PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
- PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP |
- PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP;
-
- for (i = 1; i < info->pages; i++)
- info->func[i] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
- PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
- PMBUS_HAVE_POUT |
- PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP;
-
- /* ucd9240 supports a single fan */
- if (mid->driver_data == ucd9240)
- info->func[0] |= PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12;
-
- ret = pmbus_do_probe(client, mid, info);
- if (ret < 0)
- goto out;
- return 0;
-out:
- kfree(info);
- return ret;
-}
-
-static int ucd9200_remove(struct i2c_client *client)
-{
- int ret;
- const struct pmbus_driver_info *info;
-
- info = pmbus_get_driver_info(client);
- ret = pmbus_do_remove(client);
- kfree(info);
- return ret;
-}
-
-
-/* This is the driver that will be inserted */
-static struct i2c_driver ucd9200_driver = {
- .driver = {
- .name = "ucd9200",
- },
- .probe = ucd9200_probe,
- .remove = ucd9200_remove,
- .id_table = ucd9200_id,
-};
-
-static int __init ucd9200_init(void)
-{
- return i2c_add_driver(&ucd9200_driver);
-}
-
-static void __exit ucd9200_exit(void)
-{
- i2c_del_driver(&ucd9200_driver);
-}
-
-MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("PMBus driver for TI UCD922x, UCD924x");
-MODULE_LICENSE("GPL");
-module_init(ucd9200_init);
-module_exit(ucd9200_exit);
projects / linux-2.6-block.git / commitdiff