Sync up with mainline to bring in the latest DTS files.
--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019-2020 Artur Rojek
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/input/adc-joystick.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: ADC attached joystick
+
+maintainers:
+ - Artur Rojek <contact@artur-rojek.eu>
+
+description: >
+ Bindings for joystick devices connected to ADC controllers supporting
+ the Industrial I/O subsystem.
+
+properties:
+ compatible:
+ const: adc-joystick
+
+ io-channels:
+ minItems: 1
+ maxItems: 1024
+ description: >
+ List of phandle and IIO specifier pairs.
+ Each pair defines one ADC channel to which a joystick axis is connected.
+ See Documentation/devicetree/bindings/iio/iio-bindings.txt for details.
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+required:
+ - compatible
+ - io-channels
+ - '#address-cells'
+ - '#size-cells'
+
+additionalProperties: false
+
+patternProperties:
+ "^axis@[0-9a-f]+$":
+ type: object
+ description: >
+ Represents a joystick axis bound to the given ADC channel.
+ For each entry in the io-channels list, one axis subnode with a matching
+ reg property must be specified.
+
+ properties:
+ reg:
+ minimum: 0
+ maximum: 1023
+ description: Index of an io-channels list entry bound to this axis.
+
+ linux,code:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: EV_ABS specific event code generated by the axis.
+
+ abs-range:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32-array
+ - items:
+ - description: minimum value
+ - description: maximum value
+ description: >
+ Minimum and maximum values produced by the axis.
+ For an ABS_X axis this will be the left-most and right-most
+ inclination of the joystick. If min > max, it is left to userspace to
+ treat the axis as inverted.
+ This property is interpreted as two signed 32 bit values.
+
+ abs-fuzz:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: >
+ Amount of noise in the input value.
+ Omitting this property indicates the axis is precise.
+
+ abs-flat:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: >
+ Axial "deadzone", or area around the center position, where the axis
+ is considered to be at rest.
+ Omitting this property indicates the axis always returns to exactly
+ the center position.
+
+ required:
+ - reg
+ - linux,code
+ - abs-range
+
+ additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/iio/adc/ingenic,adc.h>
+ #include <dt-bindings/input/input.h>
+
+ joystick: adc-joystick {
+ compatible = "adc-joystick";
+ io-channels = <&adc INGENIC_ADC_TOUCH_XP>,
+ <&adc INGENIC_ADC_TOUCH_YP>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ axis@0 {
+ reg = <0>;
+ linux,code = <ABS_X>;
+ abs-range = <3300 0>;
+ abs-fuzz = <4>;
+ abs-flat = <200>;
+ };
+ axis@1 {
+ reg = <1>;
+ linux,code = <ABS_Y>;
+ abs-range = <0 3300>;
+ abs-fuzz = <4>;
+ abs-flat = <200>;
+ };
+ };
* Elan eKTF2127 I2C touchscreen controller
Required properties:
- - compatible : "elan,ektf2127"
+ - compatible : "elan,ektf2127" or "elan,ektf2132"
- reg : I2C slave address of the chip (0x40)
- interrupts : interrupt specification for the ektf2127 interrupt
- power-gpios : GPIO specification for the pin connected to the
--- /dev/null
+Device tree bindings for Zinitx BT541 touchscreen controller
+
+Required properties:
+
+ - compatible : Should be "zinitix,bt541"
+ - reg : I2C address of the chip. Should be 0x20
+ - interrupts : Interrupt to which the chip is connected
+
+Optional properties:
+
+ - vdd-supply : Analog power supply regulator on VCCA pin
+ - vddo-supply : Digital power supply regulator on VDD pin
+ - zinitix,mode : Mode of reporting touch points. Some modes may not work
+ with a particular ts firmware for unknown reasons. Available
+ modes are 1 and 2. Mode 2 is the default and preferred.
+
+The touchscreen-* properties are documented in touchscreen.txt in this
+directory.
+
+Example:
+
+ i2c@00000000 {
+ /* ... */
+
+ bt541@20 {
+ compatible = "zinitix,bt541";
+ reg = <0x20>;
+ interrupt-parent = <&msmgpio>;
+ interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&tsp_default>;
+ vdd-supply = <®_vdd_tsp>;
+ vddo-supply = <&pm8916_l6>;
+ touchscreen-size-x = <540>;
+ touchscreen-size-y = <960>;
+ zinitix,mode = <2>;
+ };
+
+ /* ... */
+ };
description: Shenzhen Zidoo Technology Co., Ltd.
"^zii,.*":
description: Zodiac Inflight Innovations
+ "^zinitix,.*":
+ description: Zinitix Co., Ltd
"^zte,.*":
description: ZTE Corp.
"^zyxel,.*":
F: drivers/video/fbdev/sis/
F: include/video/sisfb.h
+SIS I2C TOUCHSCREEN DRIVER
+M: Mika Penttilä <mika.penttila@nextfour.com>
+L: linux-input@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/input/touchscreen/sis_i2c.txt
+F: drivers/input/touchscreen/sis_i2c.c
+
SIS USB2VGA DRIVER
M: Thomas Winischhofer <thomas@winischhofer.net>
S: Maintained
}
if (data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS)
- rmi_hid_pdata.f30_data.disable = true;
+ rmi_hid_pdata.gpio_data.disable = true;
data->xport.dev = hdev->dev.parent;
data->xport.pdata = rmi_hid_pdata;
struct evdev {
int open;
struct input_handle handle;
- wait_queue_head_t wait;
struct evdev_client __rcu *grab;
struct list_head client_list;
spinlock_t client_lock; /* protects client_list */
unsigned int tail;
unsigned int packet_head; /* [future] position of the first element of next packet */
spinlock_t buffer_lock; /* protects access to buffer, head and tail */
+ wait_queue_head_t wait;
struct fasync_struct *fasync;
struct evdev *evdev;
struct list_head node;
const struct input_value *vals, unsigned int count,
ktime_t *ev_time)
{
- struct evdev *evdev = client->evdev;
const struct input_value *v;
struct input_event event;
struct timespec64 ts;
spin_unlock(&client->buffer_lock);
if (wakeup)
- wake_up_interruptible_poll(&evdev->wait,
+ wake_up_interruptible_poll(&client->wait,
EPOLLIN | EPOLLOUT | EPOLLRDNORM | EPOLLWRNORM);
}
struct evdev_client *client;
spin_lock(&evdev->client_lock);
- list_for_each_entry(client, &evdev->client_list, node)
+ list_for_each_entry(client, &evdev->client_list, node) {
kill_fasync(&client->fasync, SIGIO, POLL_HUP);
+ wake_up_interruptible_poll(&client->wait, EPOLLHUP | EPOLLERR);
+ }
spin_unlock(&evdev->client_lock);
-
- wake_up_interruptible_poll(&evdev->wait, EPOLLHUP | EPOLLERR);
}
static int evdev_release(struct inode *inode, struct file *file)
if (!client)
return -ENOMEM;
+ init_waitqueue_head(&client->wait);
client->bufsize = bufsize;
spin_lock_init(&client->buffer_lock);
client->evdev = evdev;
break;
if (!(file->f_flags & O_NONBLOCK)) {
- error = wait_event_interruptible(evdev->wait,
+ error = wait_event_interruptible(client->wait,
client->packet_head != client->tail ||
!evdev->exist || client->revoked);
if (error)
struct evdev *evdev = client->evdev;
__poll_t mask;
- poll_wait(file, &evdev->wait, wait);
+ poll_wait(file, &client->wait, wait);
if (evdev->exist && !client->revoked)
mask = EPOLLOUT | EPOLLWRNORM;
client->revoked = true;
evdev_ungrab(evdev, client);
input_flush_device(&evdev->handle, file);
- wake_up_interruptible_poll(&evdev->wait, EPOLLHUP | EPOLLERR);
+ wake_up_interruptible_poll(&client->wait, EPOLLHUP | EPOLLERR);
return 0;
}
INIT_LIST_HEAD(&evdev->client_list);
spin_lock_init(&evdev->client_lock);
mutex_init(&evdev->mutex);
- init_waitqueue_head(&evdev->wait);
evdev->exist = true;
dev_no = minor;
p = begin + step;
s = p == end ? f + 1 : *p;
- for (; p != end; p += step)
- if (*p < f)
- s = f, f = *p;
- else if (*p < s)
+ for (; p != end; p += step) {
+ if (*p < f) {
+ s = f;
+ f = *p;
+ } else if (*p < s) {
s = *p;
+ }
+ }
c = (f + s + 1) / 2;
if (c == 0 || (c > mu && (!eq || mu > 0)))
To compile this driver as a module, choose M here: the
module will be called a3d.
+config JOYSTICK_ADC
+ tristate "Simple joystick connected over ADC"
+ depends on IIO
+ select IIO_BUFFER_CB
+ help
+ Say Y here if you have a simple joystick connected over ADC.
+
+ To compile this driver as a module, choose M here: the
+ module will be called adc-joystick.
+
config JOYSTICK_ADI
tristate "Logitech ADI digital joysticks and gamepads"
select GAMEPORT
# Each configuration option enables a list of files.
obj-$(CONFIG_JOYSTICK_A3D) += a3d.o
+obj-$(CONFIG_JOYSTICK_ADC) += adc-joystick.o
obj-$(CONFIG_JOYSTICK_ADI) += adi.o
obj-$(CONFIG_JOYSTICK_AMIGA) += amijoy.o
obj-$(CONFIG_JOYSTICK_AS5011) += as5011.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Input driver for joysticks connected over ADC.
+ * Copyright (c) 2019-2020 Artur Rojek <contact@artur-rojek.eu>
+ */
+#include <linux/ctype.h>
+#include <linux/input.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/consumer.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+
+#include <asm/unaligned.h>
+
+struct adc_joystick_axis {
+ u32 code;
+ s32 range[2];
+ s32 fuzz;
+ s32 flat;
+};
+
+struct adc_joystick {
+ struct input_dev *input;
+ struct iio_cb_buffer *buffer;
+ struct adc_joystick_axis *axes;
+ struct iio_channel *chans;
+ int num_chans;
+};
+
+static int adc_joystick_handle(const void *data, void *private)
+{
+ struct adc_joystick *joy = private;
+ enum iio_endian endianness;
+ int bytes, msb, val, idx, i;
+ const u16 *data_u16;
+ bool sign;
+
+ bytes = joy->chans[0].channel->scan_type.storagebits >> 3;
+
+ for (i = 0; i < joy->num_chans; ++i) {
+ idx = joy->chans[i].channel->scan_index;
+ endianness = joy->chans[i].channel->scan_type.endianness;
+ msb = joy->chans[i].channel->scan_type.realbits - 1;
+ sign = tolower(joy->chans[i].channel->scan_type.sign) == 's';
+
+ switch (bytes) {
+ case 1:
+ val = ((const u8 *)data)[idx];
+ break;
+ case 2:
+ data_u16 = (const u16 *)data + idx;
+
+ /*
+ * Data is aligned to the sample size by IIO core.
+ * Call `get_unaligned_xe16` to hide type casting.
+ */
+ if (endianness == IIO_BE)
+ val = get_unaligned_be16(data_u16);
+ else if (endianness == IIO_LE)
+ val = get_unaligned_le16(data_u16);
+ else /* IIO_CPU */
+ val = *data_u16;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ val >>= joy->chans[i].channel->scan_type.shift;
+ if (sign)
+ val = sign_extend32(val, msb);
+ else
+ val &= GENMASK(msb, 0);
+ input_report_abs(joy->input, joy->axes[i].code, val);
+ }
+
+ input_sync(joy->input);
+
+ return 0;
+}
+
+static int adc_joystick_open(struct input_dev *dev)
+{
+ struct adc_joystick *joy = input_get_drvdata(dev);
+ struct device *devp = &dev->dev;
+ int ret;
+
+ ret = iio_channel_start_all_cb(joy->buffer);
+ if (ret)
+ dev_err(devp, "Unable to start callback buffer: %d\n", ret);
+
+ return ret;
+}
+
+static void adc_joystick_close(struct input_dev *dev)
+{
+ struct adc_joystick *joy = input_get_drvdata(dev);
+
+ iio_channel_stop_all_cb(joy->buffer);
+}
+
+static void adc_joystick_cleanup(void *data)
+{
+ iio_channel_release_all_cb(data);
+}
+
+static int adc_joystick_set_axes(struct device *dev, struct adc_joystick *joy)
+{
+ struct adc_joystick_axis *axes;
+ struct fwnode_handle *child;
+ int num_axes, error, i;
+
+ num_axes = device_get_child_node_count(dev);
+ if (!num_axes) {
+ dev_err(dev, "Unable to find child nodes\n");
+ return -EINVAL;
+ }
+
+ if (num_axes != joy->num_chans) {
+ dev_err(dev, "Got %d child nodes for %d channels\n",
+ num_axes, joy->num_chans);
+ return -EINVAL;
+ }
+
+ axes = devm_kmalloc_array(dev, num_axes, sizeof(*axes), GFP_KERNEL);
+ if (!axes)
+ return -ENOMEM;
+
+ device_for_each_child_node(dev, child) {
+ error = fwnode_property_read_u32(child, "reg", &i);
+ if (error) {
+ dev_err(dev, "reg invalid or missing\n");
+ goto err_fwnode_put;
+ }
+
+ if (i >= num_axes) {
+ error = -EINVAL;
+ dev_err(dev, "No matching axis for reg %d\n", i);
+ goto err_fwnode_put;
+ }
+
+ error = fwnode_property_read_u32(child, "linux,code",
+ &axes[i].code);
+ if (error) {
+ dev_err(dev, "linux,code invalid or missing\n");
+ goto err_fwnode_put;
+ }
+
+ error = fwnode_property_read_u32_array(child, "abs-range",
+ axes[i].range, 2);
+ if (error) {
+ dev_err(dev, "abs-range invalid or missing\n");
+ goto err_fwnode_put;
+ }
+
+ fwnode_property_read_u32(child, "abs-fuzz", &axes[i].fuzz);
+ fwnode_property_read_u32(child, "abs-flat", &axes[i].flat);
+
+ input_set_abs_params(joy->input, axes[i].code,
+ axes[i].range[0], axes[i].range[1],
+ axes[i].fuzz, axes[i].flat);
+ input_set_capability(joy->input, EV_ABS, axes[i].code);
+ }
+
+ joy->axes = axes;
+
+ return 0;
+
+err_fwnode_put:
+ fwnode_handle_put(child);
+ return error;
+}
+
+static int adc_joystick_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct adc_joystick *joy;
+ struct input_dev *input;
+ int error;
+ int bits;
+ int i;
+
+ joy = devm_kzalloc(dev, sizeof(*joy), GFP_KERNEL);
+ if (!joy)
+ return -ENOMEM;
+
+ joy->chans = devm_iio_channel_get_all(dev);
+ if (IS_ERR(joy->chans)) {
+ error = PTR_ERR(joy->chans);
+ if (error != -EPROBE_DEFER)
+ dev_err(dev, "Unable to get IIO channels");
+ return error;
+ }
+
+ /* Count how many channels we got. NULL terminated. */
+ for (i = 0; joy->chans[i].indio_dev; i++) {
+ bits = joy->chans[i].channel->scan_type.storagebits;
+ if (!bits || bits > 16) {
+ dev_err(dev, "Unsupported channel storage size\n");
+ return -EINVAL;
+ }
+ if (bits != joy->chans[0].channel->scan_type.storagebits) {
+ dev_err(dev, "Channels must have equal storage size\n");
+ return -EINVAL;
+ }
+ }
+ joy->num_chans = i;
+
+ input = devm_input_allocate_device(dev);
+ if (!input) {
+ dev_err(dev, "Unable to allocate input device\n");
+ return -ENOMEM;
+ }
+
+ joy->input = input;
+ input->name = pdev->name;
+ input->id.bustype = BUS_HOST;
+ input->open = adc_joystick_open;
+ input->close = adc_joystick_close;
+
+ error = adc_joystick_set_axes(dev, joy);
+ if (error)
+ return error;
+
+ input_set_drvdata(input, joy);
+ error = input_register_device(input);
+ if (error) {
+ dev_err(dev, "Unable to register input device\n");
+ return error;
+ }
+
+ joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, joy);
+ if (IS_ERR(joy->buffer)) {
+ dev_err(dev, "Unable to allocate callback buffer\n");
+ return PTR_ERR(joy->buffer);
+ }
+
+ error = devm_add_action_or_reset(dev, adc_joystick_cleanup, joy->buffer);
+ if (error) {
+ dev_err(dev, "Unable to add action\n");
+ return error;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id adc_joystick_of_match[] = {
+ { .compatible = "adc-joystick", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, adc_joystick_of_match);
+
+static struct platform_driver adc_joystick_driver = {
+ .driver = {
+ .name = "adc-joystick",
+ .of_match_table = adc_joystick_of_match,
+ },
+ .probe = adc_joystick_probe,
+};
+module_platform_driver(adc_joystick_driver);
+
+MODULE_DESCRIPTION("Input driver for joysticks connected over ADC");
+MODULE_AUTHOR("Artur Rojek <contact@artur-rojek.eu>");
+MODULE_LICENSE("GPL");
int err;
if (!(port = kzalloc(sizeof(struct analog_port), GFP_KERNEL)))
- return - ENOMEM;
+ return -ENOMEM;
err = analog_init_port(gameport, drv, port);
if (err)
#include <asm/unaligned.h>
-/*
+/**
+ * struct cros_ec_keyb - Structure representing EC keyboard device
+ *
* @rows: Number of rows in the keypad
* @cols: Number of columns in the keypad
* @row_shift: log2 or number of rows, rounded up
struct notifier_block notifier;
};
-
/**
- * cros_ec_bs_map - Struct mapping Linux keycodes to EC button/switch bitmap
- * #defines
+ * struct cros_ec_bs_map - Mapping between Linux keycodes and EC button/switch
+ * bitmap #defines
*
* @ev_type: The type of the input event to generate (e.g., EV_KEY).
* @code: A linux keycode
}
keypad->irq = platform_get_irq(pdev, 0);
- if (!keypad->irq) {
- err = -ENXIO;
+ if (keypad->irq < 0) {
+ err = keypad->irq;
goto failed_free;
}
/**
* get_bm_events_by_type() - returns bitmap of supported events per @type
- * @input: input device from which bitmap is retrieved
+ * @dev: input device from which bitmap is retrieved
* @type: type of button (%EV_KEY, %EV_SW)
*
* Return value of this function can be used to allocate bitmap
* @board: keypad platform device
* @keymap: matrix scan code table for keycodes
* @clk: clock structure pointer
+ * @pclk: clock structure pointer
+ * @ske_keypad_lock: spinlock protecting the keypad read/writes
*/
struct ske_keypad {
int irq;
}
irq = platform_get_irq(pdev, 0);
- if (!irq) {
- dev_err(&pdev->dev, "no keyboard irq assigned\n");
- return -EINVAL;
- }
+ if (irq < 0)
+ return irq;
keypad_data = kzalloc(sizeof(struct omap4_keypad), GFP_KERNEL);
if (!keypad_data) {
/**
* struct pmic8xxx_kp - internal keypad data structure
- * @num_cols - number of columns of keypad
- * @num_rows - number of row of keypad
- * @input - input device pointer for keypad
- * @regmap - regmap handle
- * @key_sense_irq - key press/release irq number
- * @key_stuck_irq - key stuck notification irq number
- * @keycodes - array to hold the key codes
- * @dev - parent device pointer
- * @keystate - present key press/release state
- * @stuckstate - present state when key stuck irq
- * @ctrl_reg - control register value
+ * @num_cols: number of columns of keypad
+ * @num_rows: number of row of keypad
+ * @input: input device pointer for keypad
+ * @regmap: regmap handle
+ * @key_sense_irq: key press/release irq number
+ * @key_stuck_irq: key stuck notification irq number
+ * @keycodes: array to hold the key codes
+ * @dev: parent device pointer
+ * @keystate: present key press/release state
+ * @stuckstate: present state when key stuck irq
+ * @ctrl_reg: control register value
*/
struct pmic8xxx_kp {
unsigned int num_rows;
{
struct samsung_keypad *keypad = dev_id;
unsigned int row_state[SAMSUNG_MAX_COLS];
- unsigned int val;
bool key_down;
pm_runtime_get_sync(&keypad->pdev->dev);
do {
- val = readl(keypad->base + SAMSUNG_KEYIFSTSCLR);
+ readl(keypad->base + SAMSUNG_KEYIFSTSCLR);
/* Clear interrupt. */
writel(~0x0, keypad->base + SAMSUNG_KEYIFSTSCLR);
bool autorepeat;
unsigned int n_rows;
unsigned int n_cols;
- unsigned int irq;
+ int irq;
struct device *dbg_dev;
struct input_dev *input;
}
kp->irq = platform_get_irq(pdev, 0);
- if (!kp->irq) {
- dev_err(&pdev->dev, "no keyboard irq assigned\n");
- return -EINVAL;
- }
+ if (kp->irq < 0)
+ return kp->irq;
error = matrix_keypad_build_keymap(keymap_data, NULL,
TWL4030_MAX_ROWS,
/**
* struct ab8500_ponkey - ab8500 ponkey information
- * @input_dev: pointer to input device
+ * @idev: pointer to input device
* @ab8500: ab8500 parent
* @irq_dbf: irq number for falling transition
* @irq_dbr: irq number for rising transition
/**
* struct drv260x_data -
- * @input_dev - Pointer to the input device
- * @client - Pointer to the I2C client
- * @regmap - Register map of the device
- * @work - Work item used to off load the enable/disable of the vibration
- * @enable_gpio - Pointer to the gpio used for enable/disabling
- * @regulator - Pointer to the regulator for the IC
- * @magnitude - Magnitude of the vibration event
- * @mode - The operating mode of the IC (LRA_NO_CAL, ERM or LRA)
- * @library - The vibration library to be used
- * @rated_voltage - The rated_voltage of the actuator
- * @overdriver_voltage - The over drive voltage of the actuator
+ * @input_dev: Pointer to the input device
+ * @client: Pointer to the I2C client
+ * @regmap: Register map of the device
+ * @work: Work item used to off load the enable/disable of the vibration
+ * @enable_gpio: Pointer to the gpio used for enable/disabling
+ * @regulator: Pointer to the regulator for the IC
+ * @magnitude: Magnitude of the vibration event
+ * @mode: The operating mode of the IC (LRA_NO_CAL, ERM or LRA)
+ * @library: The vibration library to be used
+ * @rated_voltage: The rated_voltage of the actuator
+ * @overdrive_voltage: The over drive voltage of the actuator
**/
struct drv260x_data {
struct input_dev *input_dev;
#define DRV260X_DEF_RATED_VOLT 0x90
#define DRV260X_DEF_OD_CLAMP_VOLT 0x90
-/**
+/*
* Rated and Overdriver Voltages:
* Calculated using the formula r = v * 255 / 5.6
* where r is what will be written to the register
* and v is the rated or overdriver voltage of the actuator
- **/
+ */
static int drv260x_calculate_voltage(unsigned int voltage)
{
return (voltage * 255 / 5600);
/**
* struct drv2665_data -
- * @input_dev - Pointer to the input device
- * @client - Pointer to the I2C client
- * @regmap - Register map of the device
- * @work - Work item used to off load the enable/disable of the vibration
- * @regulator - Pointer to the regulator for the IC
+ * @input_dev: Pointer to the input device
+ * @client: Pointer to the I2C client
+ * @regmap: Register map of the device
+ * @work: Work item used to off load the enable/disable of the vibration
+ * @regulator: Pointer to the regulator for the IC
*/
struct drv2665_data {
struct input_dev *input_dev;
/**
* struct drv2667_data -
- * @input_dev - Pointer to the input device
- * @client - Pointer to the I2C client
- * @regmap - Register map of the device
- * @work - Work item used to off load the enable/disable of the vibration
- * @regulator - Pointer to the regulator for the IC
- * @magnitude - Magnitude of the vibration event
+ * @input_dev: Pointer to the input device
+ * @client: Pointer to the I2C client
+ * @regmap: Register map of the device
+ * @work: Work item used to off load the enable/disable of the vibration
+ * @regulator: Pointer to the regulator for the IC
+ * @page: Page number
+ * @magnitude: Magnitude of the vibration event
+ * @frequency: Frequency of the vibration event
**/
struct drv2667_data {
struct input_dev *input_dev;
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/acpi.h>
+#include <linux/dmi.h>
#include <linux/gpio/consumer.h>
#include <linux/gpio_keys.h>
#include <linux/gpio.h>
unsigned int event_code;
bool autorepeat;
bool wakeup;
+ bool active_low;
};
struct soc_device_data {
struct platform_device *children[BUTTON_TYPES];
};
+/*
+ * Some 2-in-1s which use the soc_button_array driver have this ugly issue in
+ * their DSDT where the _LID method modifies the irq-type settings of the GPIOs
+ * used for the power and home buttons. The intend of this AML code is to
+ * disable these buttons when the lid is closed.
+ * The AML does this by directly poking the GPIO controllers registers. This is
+ * problematic because when re-enabling the irq, which happens whenever _LID
+ * gets called with the lid open (e.g. on boot and on resume), it sets the
+ * irq-type to IRQ_TYPE_LEVEL_LOW. Where as the gpio-keys driver programs the
+ * type to, and expects it to be, IRQ_TYPE_EDGE_BOTH.
+ * To work around this we don't set gpio_keys_button.gpio on these 2-in-1s,
+ * instead we get the irq for the GPIO ourselves, configure it as
+ * IRQ_TYPE_LEVEL_LOW (to match how the _LID AML code configures it) and pass
+ * the irq in gpio_keys_button.irq. Below is a list of affected devices.
+ */
+static const struct dmi_system_id dmi_use_low_level_irq[] = {
+ {
+ /*
+ * Acer Switch 10 SW5-012. _LID method messes with home- and
+ * power-button GPIO IRQ settings. When (re-)enabling the irq
+ * it ors in its own flags without clearing the previous set
+ * ones, leading to an irq-type of IRQ_TYPE_LEVEL_LOW |
+ * IRQ_TYPE_LEVEL_HIGH causing a continuous interrupt storm.
+ */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire SW5-012"),
+ },
+ },
+ {
+ /*
+ * Acer One S1003. _LID method messes with power-button GPIO
+ * IRQ settings, leading to a non working power-button.
+ */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "One S1003"),
+ },
+ },
+ {} /* Terminating entry */
+};
+
/*
* Get the Nth GPIO number from the ACPI object.
*/
-static int soc_button_lookup_gpio(struct device *dev, int acpi_index)
+static int soc_button_lookup_gpio(struct device *dev, int acpi_index,
+ int *gpio_ret, int *irq_ret)
{
struct gpio_desc *desc;
- int gpio;
desc = gpiod_get_index(dev, NULL, acpi_index, GPIOD_ASIS);
if (IS_ERR(desc))
return PTR_ERR(desc);
- gpio = desc_to_gpio(desc);
+ *gpio_ret = desc_to_gpio(desc);
+ *irq_ret = gpiod_to_irq(desc);
gpiod_put(desc);
- return gpio;
+ return 0;
}
static struct platform_device *
struct platform_device *pd;
struct gpio_keys_button *gpio_keys;
struct gpio_keys_platform_data *gpio_keys_pdata;
+ int error, gpio, irq;
int n_buttons = 0;
- int gpio;
- int error;
for (info = button_info; info->name; info++)
if (info->autorepeat == autorepeat)
if (info->autorepeat != autorepeat)
continue;
- gpio = soc_button_lookup_gpio(&pdev->dev, info->acpi_index);
- if (!gpio_is_valid(gpio)) {
+ error = soc_button_lookup_gpio(&pdev->dev, info->acpi_index, &gpio, &irq);
+ if (error || irq < 0) {
/*
* Skip GPIO if not present. Note we deliberately
* ignore -EPROBE_DEFER errors here. On some devices
continue;
}
+ /* See dmi_use_low_level_irq[] comment */
+ if (!autorepeat && dmi_check_system(dmi_use_low_level_irq)) {
+ irq_set_irq_type(irq, IRQ_TYPE_LEVEL_LOW);
+ gpio_keys[n_buttons].irq = irq;
+ gpio_keys[n_buttons].gpio = -ENOENT;
+ } else {
+ gpio_keys[n_buttons].gpio = gpio;
+ }
+
gpio_keys[n_buttons].type = info->event_type;
gpio_keys[n_buttons].code = info->event_code;
- gpio_keys[n_buttons].gpio = gpio;
- gpio_keys[n_buttons].active_low = 1;
+ gpio_keys[n_buttons].active_low = info->active_low;
gpio_keys[n_buttons].desc = info->name;
gpio_keys[n_buttons].wakeup = info->wakeup;
/* These devices often use cheap buttons, use 50 ms debounce */
}
info->event_type = EV_KEY;
+ info->active_low = true;
info->acpi_index =
soc_button_get_acpi_object_int(&desc->package.elements[1]);
upage = soc_button_get_acpi_object_int(&desc->package.elements[3]);
* Platforms"
*/
static const struct soc_button_info soc_button_PNP0C40[] = {
- { "power", 0, EV_KEY, KEY_POWER, false, true },
- { "home", 1, EV_KEY, KEY_LEFTMETA, false, true },
- { "volume_up", 2, EV_KEY, KEY_VOLUMEUP, true, false },
- { "volume_down", 3, EV_KEY, KEY_VOLUMEDOWN, true, false },
- { "rotation_lock", 4, EV_KEY, KEY_ROTATE_LOCK_TOGGLE, false, false },
+ { "power", 0, EV_KEY, KEY_POWER, false, true, true },
+ { "home", 1, EV_KEY, KEY_LEFTMETA, false, true, true },
+ { "volume_up", 2, EV_KEY, KEY_VOLUMEUP, true, false, true },
+ { "volume_down", 3, EV_KEY, KEY_VOLUMEDOWN, true, false, true },
+ { "rotation_lock", 4, EV_KEY, KEY_ROTATE_LOCK_TOGGLE, false, false, true },
{ }
};
.button_info = soc_button_PNP0C40,
};
+static const struct soc_button_info soc_button_INT33D3[] = {
+ { "tablet_mode", 0, EV_SW, SW_TABLET_MODE, false, false, false },
+ { }
+};
+
+static const struct soc_device_data soc_device_INT33D3 = {
+ .button_info = soc_button_INT33D3,
+};
+
/*
* Special device check for Surface Book 2 and Surface Pro (2017).
* Both, the Surface Pro 4 (surfacepro3_button.c) and the above mentioned
* Obtained from DSDT/testing.
*/
static const struct soc_button_info soc_button_MSHW0040[] = {
- { "power", 0, EV_KEY, KEY_POWER, false, true },
- { "volume_up", 2, EV_KEY, KEY_VOLUMEUP, true, false },
- { "volume_down", 4, EV_KEY, KEY_VOLUMEDOWN, true, false },
+ { "power", 0, EV_KEY, KEY_POWER, false, true, true },
+ { "volume_up", 2, EV_KEY, KEY_VOLUMEUP, true, false, true },
+ { "volume_down", 4, EV_KEY, KEY_VOLUMEDOWN, true, false, true },
{ }
};
static const struct acpi_device_id soc_button_acpi_match[] = {
{ "PNP0C40", (unsigned long)&soc_device_PNP0C40 },
+ { "INT33D3", (unsigned long)&soc_device_INT33D3 },
+ { "ID9001", (unsigned long)&soc_device_INT33D3 },
{ "ACPI0011", 0 },
/* Microsoft Surface Devices (5th and 6th generation) */
/**
* cyapa_i2c_write - Execute i2c block data write operation
* @cyapa: Handle to this driver
- * @ret: Offset of the data to written in the register map
+ * @reg: Offset of the data to written in the register map
* @len: number of bytes to write
* @values: Data to be written
*
return size;
}
-/**
+/*
* Return a negative errno code else zero on success.
*/
ssize_t cyapa_i2c_pip_write(struct cyapa *cyapa, u8 *buf, size_t size)
return pm_stage;
}
-/**
+/*
* This function is aimed to dump all not read data in Gen5 trackpad
* before send any command, otherwise, the interrupt line will be blocked.
*/
#include <linux/completion.h>
#include <linux/of.h>
#include <linux/property.h>
-#include <linux/input/elan-i2c-ids.h>
#include <linux/regulator/consumer.h>
#include <asm/unaligned.h>
MODULE_DEVICE_TABLE(i2c, elan_id);
#ifdef CONFIG_ACPI
+#include <linux/input/elan-i2c-ids.h>
MODULE_DEVICE_TABLE(acpi, elan_acpi_id);
#endif
leave_breadcrumbs);
}
-/**
+/*
* elantech_setup_smbus - called once the PS/2 devices are enumerated
* and decides to instantiate a SMBus InterTouch device.
*/
"LEN0093", /* T480 */
"LEN0096", /* X280 */
"LEN0097", /* X280 -> ALPS trackpoint */
- "LEN0099", /* X1 Extreme 1st */
+ "LEN0099", /* X1 Extreme Gen 1 / P1 Gen 1 */
"LEN009b", /* T580 */
+ "LEN0402", /* X1 Extreme Gen 2 / P1 Gen 2 */
"LEN200f", /* T450s */
"LEN2044", /* L470 */
"LEN2054", /* E480 */
"LEN2055", /* E580 */
+ "LEN2068", /* T14 Gen 1 */
"SYN3052", /* HP EliteBook 840 G4 */
"SYN3221", /* HP 15-ay000 */
"SYN323d", /* HP Spectre X360 13-w013dx */
.kernel_tracking = false,
.topbuttonpad = topbuttonpad,
},
- .f30_data = {
+ .gpio_data = {
.buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
.trackstick_buttons =
!!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
device via the firmware loader interface. This is triggered using a
sysfs attribute.
+config RMI4_F3A
+ bool "RMI4 Function 3A (GPIO)"
+ help
+ Say Y here if you want to add support for RMI4 function 3A.
+
+ Function 3A provides GPIO support for RMI4 devices. This includes
+ support for buttons on TouchPads and ClickPads.
+
config RMI4_F54
bool "RMI4 Function 54 (Analog diagnostics)"
depends on VIDEO_V4L2=y || (RMI4_CORE=m && VIDEO_V4L2=m)
rmi_core-$(CONFIG_RMI4_F12) += rmi_f12.o
rmi_core-$(CONFIG_RMI4_F30) += rmi_f30.o
rmi_core-$(CONFIG_RMI4_F34) += rmi_f34.o rmi_f34v7.o
+rmi_core-$(CONFIG_RMI4_F3A) += rmi_f3a.o
rmi_core-$(CONFIG_RMI4_F54) += rmi_f54.o
rmi_core-$(CONFIG_RMI4_F55) += rmi_f55.o
/**
* rmi_register_function_handler - register a handler for an RMI function
* @handler: RMI handler that should be registered.
- * @module: pointer to module that implements the handler
+ * @owner: pointer to module that implements the handler
* @mod_name: name of the module implementing the handler
*
* This function performs additional setup of RMI function handler and
#ifdef CONFIG_RMI4_F34
&rmi_f34_handler,
#endif
+#ifdef CONFIG_RMI4_F3A
+ &rmi_f3a_handler,
+#endif
#ifdef CONFIG_RMI4_F54
&rmi_f54_handler,
#endif
extern struct rmi_function_handler rmi_f12_handler;
extern struct rmi_function_handler rmi_f30_handler;
extern struct rmi_function_handler rmi_f34_handler;
+extern struct rmi_function_handler rmi_f3a_handler;
extern struct rmi_function_handler rmi_f54_handler;
extern struct rmi_function_handler rmi_f55_handler;
#endif
#define RMI_F01_CTRL0_CONFIGURED_BIT BIT(7)
/**
- * @ctrl0 - see the bit definitions above.
- * @doze_interval - controls the interval between checks for finger presence
- * when the touch sensor is in doze mode, in units of 10ms.
- * @wakeup_threshold - controls the capacitance threshold at which the touch
- * sensor will decide to wake up from that low power state.
- * @doze_holdoff - controls how long the touch sensor waits after the last
- * finger lifts before entering the doze state, in units of 100ms.
+ * struct f01_device_control - controls basic sensor functions
+ *
+ * @ctrl0: see the bit definitions above.
+ * @doze_interval: controls the interval between checks for finger presence
+ * when the touch sensor is in doze mode, in units of 10ms.
+ * @wakeup_threshold: controls the capacitance threshold at which the touch
+ * sensor will decide to wake up from that low power state.
+ * @doze_holdoff: controls how long the touch sensor waits after the last
+ * finger lifts before entering the doze state, in units of 100ms.
*/
struct f01_device_control {
u8 ctrl0;
#define DEFAULT_MIN_ABS_MT_TRACKING_ID 1
#define DEFAULT_MAX_ABS_MT_TRACKING_ID 10
-/** A note about RMI4 F11 register structure.
+/*
+ * A note about RMI4 F11 register structure.
*
- * The properties for
- * a given sensor are described by its query registers. The number of query
- * registers and the layout of their contents are described by the F11 device
- * queries as well as the sensor query information.
+ * The properties for a given sensor are described by its query registers. The
+ * number of query registers and the layout of their contents are described by
+ * the F11 device queries as well as the sensor query information.
*
* Similarly, each sensor has control registers that govern its behavior. The
* size and layout of the control registers for a given sensor can be determined
/* maximum ABS_MT_POSITION displacement (in mm) */
#define DMAX 10
-/**
- * @rezero - writing this to the F11 command register will cause the sensor to
+/*
+ * Writing this to the F11 command register will cause the sensor to
* calibrate to the current capacitive state.
*/
#define RMI_F11_REZERO 0x01
#define F11_UNIFORM_CLICKPAD 0x02
/**
+ * struct f11_2d_sensor_queries - describes sensor capabilities
+ *
* Query registers 1 through 4 are always present.
*
- * @nr_fingers - describes the maximum number of fingers the 2-D sensor
- * supports.
- * @has_rel - the sensor supports relative motion reporting.
- * @has_abs - the sensor supports absolute poition reporting.
- * @has_gestures - the sensor supports gesture reporting.
- * @has_sensitivity_adjust - the sensor supports a global sensitivity
- * adjustment.
- * @configurable - the sensor supports various configuration options.
- * @num_of_x_electrodes - the maximum number of electrodes the 2-D sensor
- * supports on the X axis.
- * @num_of_y_electrodes - the maximum number of electrodes the 2-D sensor
- * supports on the Y axis.
- * @max_electrodes - the total number of X and Y electrodes that may be
- * configured.
+ * @nr_fingers: describes the maximum number of fingers the 2-D sensor
+ * supports.
+ * @has_rel: the sensor supports relative motion reporting.
+ * @has_abs: the sensor supports absolute poition reporting.
+ * @has_gestures: the sensor supports gesture reporting.
+ * @has_sensitivity_adjust: the sensor supports a global sensitivity
+ * adjustment.
+ * @configurable: the sensor supports various configuration options.
+ * @nr_x_electrodes: the maximum number of electrodes the 2-D sensor
+ * supports on the X axis.
+ * @nr_y_electrodes: the maximum number of electrodes the 2-D sensor
+ * supports on the Y axis.
+ * @max_electrodes: the total number of X and Y electrodes that may be
+ * configured.
*
* Query 5 is present if the has_abs bit is set.
*
- * @abs_data_size - describes the format of data reported by the absolute
- * data source. Only one format (the kind used here) is supported at this
- * time.
- * @has_anchored_finger - then the sensor supports the high-precision second
- * finger tracking provided by the manual tracking and motion sensitivity
- * options.
- * @has_adjust_hyst - the difference between the finger release threshold and
- * the touch threshold.
- * @has_dribble - the sensor supports the generation of dribble interrupts,
- * which may be enabled or disabled with the dribble control bit.
- * @has_bending_correction - Bending related data registers 28 and 36, and
- * control register 52..57 are present.
- * @has_large_object_suppression - control register 58 and data register 28
- * exist.
- * @has_jitter_filter - query 13 and control 73..76 exist.
+ * @abs_data_size: describes the format of data reported by the absolute
+ * data source. Only one format (the kind used here) is supported at this
+ * time.
+ * @has_anchored_finger: then the sensor supports the high-precision second
+ * finger tracking provided by the manual tracking and motion sensitivity
+ * options.
+ * @has_adj_hyst: the difference between the finger release threshold and
+ * the touch threshold.
+ * @has_dribble: the sensor supports the generation of dribble interrupts,
+ * which may be enabled or disabled with the dribble control bit.
+ * @has_bending_correction: Bending related data registers 28 and 36, and
+ * control register 52..57 are present.
+ * @has_large_object_suppression: control register 58 and data register 28
+ * exist.
+ * @has_jitter_filter: query 13 and control 73..76 exist.
+ *
+ * Query 6 is present if the has_rel it is set.
+ *
+ * @f11_2d_query6: this register is reserved.
*
* Gesture information queries 7 and 8 are present if has_gestures bit is set.
*
- * @has_single_tap - a basic single-tap gesture is supported.
- * @has_tap_n_hold - tap-and-hold gesture is supported.
- * @has_double_tap - double-tap gesture is supported.
- * @has_early_tap - early tap is supported and reported as soon as the finger
- * lifts for any tap event that could be interpreted as either a single tap
- * or as the first tap of a double-tap or tap-and-hold gesture.
- * @has_flick - flick detection is supported.
- * @has_press - press gesture reporting is supported.
- * @has_pinch - pinch gesture detection is supported.
- * @has_palm_det - the 2-D sensor notifies the host whenever a large conductive
- * object such as a palm or a cheek touches the 2-D sensor.
- * @has_rotate - rotation gesture detection is supported.
- * @has_touch_shapes - TouchShapes are supported. A TouchShape is a fixed
- * rectangular area on the sensor that behaves like a capacitive button.
- * @has_scroll_zones - scrolling areas near the sensor edges are supported.
- * @has_individual_scroll_zones - if 1, then 4 scroll zones are supported;
- * if 0, then only two are supported.
- * @has_mf_scroll - the multifinger_scrolling bit will be set when
- * more than one finger is involved in a scrolling action.
+ * @has_single_tap: a basic single-tap gesture is supported.
+ * @has_tap_n_hold: tap-and-hold gesture is supported.
+ * @has_double_tap: double-tap gesture is supported.
+ * @has_early_tap: early tap is supported and reported as soon as the finger
+ * lifts for any tap event that could be interpreted as either a single
+ * tap or as the first tap of a double-tap or tap-and-hold gesture.
+ * @has_flick: flick detection is supported.
+ * @has_press: press gesture reporting is supported.
+ * @has_pinch: pinch gesture detection is supported.
+ * @has_chiral: chiral (circular) scrolling gesture detection is supported.
+ * @has_palm_det: the 2-D sensor notifies the host whenever a large conductive
+ * object such as a palm or a cheek touches the 2-D sensor.
+ * @has_rotate: rotation gesture detection is supported.
+ * @has_touch_shapes: TouchShapes are supported. A TouchShape is a fixed
+ * rectangular area on the sensor that behaves like a capacitive button.
+ * @has_scroll_zones: scrolling areas near the sensor edges are supported.
+ * @has_individual_scroll_zones: if 1, then 4 scroll zones are supported;
+ * if 0, then only two are supported.
+ * @has_mf_scroll: the multifinger_scrolling bit will be set when
+ * more than one finger is involved in a scrolling action.
+ * @has_mf_edge_motion: indicates whether multi-finger edge motion gesture
+ * is supported.
+ * @has_mf_scroll_inertia: indicates whether multi-finger scroll inertia
+ * feature is supported.
*
* Convenience for checking bytes in the gesture info registers. This is done
* often enough that we put it here to declutter the conditionals
*
- * @query7_nonzero - true if none of the query 7 bits are set
- * @query8_nonzero - true if none of the query 8 bits are set
+ * @query7_nonzero: true if none of the query 7 bits are set
+ * @query8_nonzero: true if none of the query 8 bits are set
*
* Query 9 is present if the has_query9 is set.
*
- * @has_pen - detection of a stylus is supported and registers F11_2D_Ctrl20
- * and F11_2D_Ctrl21 exist.
- * @has_proximity - detection of fingers near the sensor is supported and
- * registers F11_2D_Ctrl22 through F11_2D_Ctrl26 exist.
- * @has_palm_det_sensitivity - the sensor supports the palm detect sensitivity
- * feature and register F11_2D_Ctrl27 exists.
- * @has_two_pen_thresholds - is has_pen is also set, then F11_2D_Ctrl35 exists.
- * @has_contact_geometry - the sensor supports the use of contact geometry to
- * map absolute X and Y target positions and registers F11_2D_Data18
- * through F11_2D_Data27 exist.
+ * @has_pen: detection of a stylus is supported and registers F11_2D_Ctrl20
+ * and F11_2D_Ctrl21 exist.
+ * @has_proximity: detection of fingers near the sensor is supported and
+ * registers F11_2D_Ctrl22 through F11_2D_Ctrl26 exist.
+ * @has_palm_det_sensitivity: the sensor supports the palm detect sensitivity
+ * feature and register F11_2D_Ctrl27 exists.
+ * @has_suppress_on_palm_detect: the device supports the large object detect
+ * suppression feature and register F11_2D_Ctrl27 exists.
+ * @has_two_pen_thresholds: if has_pen is also set, then F11_2D_Ctrl35 exists.
+ * @has_contact_geometry: the sensor supports the use of contact geometry to
+ * map absolute X and Y target positions and registers F11_2D_Data18
+ * through F11_2D_Data27 exist.
+ * @has_pen_hover_discrimination: if has_pen is also set, then registers
+ * F11_2D_Data29 through F11_2D_Data31, F11_2D_Ctrl68.*, F11_2D_Ctrl69
+ * and F11_2D_Ctrl72 exist.
+ * @has_pen_filters: if has_pen is also set, then registers F11_2D_Ctrl70 and
+ * F11_2D_Ctrl71 exist.
*
* Touch shape info (query 10) is present if has_touch_shapes is set.
*
- * @nr_touch_shapes - the total number of touch shapes supported.
+ * @nr_touch_shapes: the total number of touch shapes supported.
*
* Query 11 is present if the has_query11 bit is set in query 0.
*
- * @has_z_tuning - if set, the sensor supports Z tuning and registers
- * F11_2D_Ctrl29 through F11_2D_Ctrl33 exist.
- * @has_algorithm_selection - controls choice of noise suppression algorithm
- * @has_w_tuning - the sensor supports Wx and Wy scaling and registers
- * F11_2D_Ctrl36 through F11_2D_Ctrl39 exist.
- * @has_pitch_info - the X and Y pitches of the sensor electrodes can be
- * configured and registers F11_2D_Ctrl40 and F11_2D_Ctrl41 exist.
- * @has_finger_size - the default finger width settings for the
- * sensor can be configured and registers F11_2D_Ctrl42 through F11_2D_Ctrl44
- * exist.
- * @has_segmentation_aggressiveness - the sensor’s ability to distinguish
- * multiple objects close together can be configured and register F11_2D_Ctrl45
- * exists.
- * @has_XY_clip - the inactive outside borders of the sensor can be
- * configured and registers F11_2D_Ctrl46 through F11_2D_Ctrl49 exist.
- * @has_drumming_filter - the sensor can be configured to distinguish
- * between a fast flick and a quick drumming movement and registers
- * F11_2D_Ctrl50 and F11_2D_Ctrl51 exist.
+ * @has_z_tuning: if set, the sensor supports Z tuning and registers
+ * F11_2D_Ctrl29 through F11_2D_Ctrl33 exist.
+ * @has_algorithm_selection: controls choice of noise suppression algorithm
+ * @has_w_tuning: the sensor supports Wx and Wy scaling and registers
+ * F11_2D_Ctrl36 through F11_2D_Ctrl39 exist.
+ * @has_pitch_info: the X and Y pitches of the sensor electrodes can be
+ * configured and registers F11_2D_Ctrl40 and F11_2D_Ctrl41 exist.
+ * @has_finger_size: the default finger width settings for the sensor
+ * can be configured and registers F11_2D_Ctrl42 through F11_2D_Ctrl44
+ * exist.
+ * @has_segmentation_aggressiveness: the sensor’s ability to distinguish
+ * multiple objects close together can be configured and register
+ * F11_2D_Ctrl45 exists.
+ * @has_XY_clip: the inactive outside borders of the sensor can be
+ * configured and registers F11_2D_Ctrl46 through F11_2D_Ctrl49 exist.
+ * @has_drumming_filter: the sensor can be configured to distinguish
+ * between a fast flick and a quick drumming movement and registers
+ * F11_2D_Ctrl50 and F11_2D_Ctrl51 exist.
*
* Query 12 is present if hasQuery12 bit is set.
*
- * @has_gapless_finger - control registers relating to gapless finger are
- * present.
- * @has_gapless_finger_tuning - additional control and data registers relating
- * to gapless finger are present.
- * @has_8bit_w - larger W value reporting is supported.
- * @has_adjustable_mapping - TBD
- * @has_info2 - the general info query14 is present
- * @has_physical_props - additional queries describing the physical properties
- * of the sensor are present.
- * @has_finger_limit - indicates that F11 Ctrl 80 exists.
- * @has_linear_coeff - indicates that F11 Ctrl 81 exists.
+ * @has_gapless_finger: control registers relating to gapless finger are
+ * present.
+ * @has_gapless_finger_tuning: additional control and data registers relating
+ * to gapless finger are present.
+ * @has_8bit_w: larger W value reporting is supported.
+ * @has_adjustable_mapping: TBD
+ * @has_info2: the general info query14 is present
+ * @has_physical_props: additional queries describing the physical properties
+ * of the sensor are present.
+ * @has_finger_limit: indicates that F11 Ctrl 80 exists.
+ * @has_linear_coeff_2: indicates that F11 Ctrl 81 exists.
*
* Query 13 is present if Query 5's has_jitter_filter bit is set.
- * @jitter_window_size - used by Design Studio 4.
- * @jitter_filter_type - used by Design Studio 4.
+ *
+ * @jitter_window_size: used by Design Studio 4.
+ * @jitter_filter_type: used by Design Studio 4.
*
* Query 14 is present if query 12's has_general_info2 flag is set.
*
- * @light_control - Indicates what light/led control features are present, if
- * any.
- * @is_clear - if set, this is a clear sensor (indicating direct pointing
- * application), otherwise it's opaque (indicating indirect pointing).
- * @clickpad_props - specifies if this is a clickpad, and if so what sort of
- * mechanism it uses
- * @mouse_buttons - specifies the number of mouse buttons present (if any).
- * @has_advanced_gestures - advanced driver gestures are supported.
+ * @light_control: Indicates what light/led control features are present,
+ * if any.
+ * @is_clear: if set, this is a clear sensor (indicating direct pointing
+ * application), otherwise it's opaque (indicating indirect pointing).
+ * @clickpad_props: specifies if this is a clickpad, and if so what sort of
+ * mechanism it uses
+ * @mouse_buttons: specifies the number of mouse buttons present (if any).
+ * @has_advanced_gestures: advanced driver gestures are supported.
+ *
+ * @x_sensor_size_mm: size of the sensor in millimeters on the X axis.
+ * @y_sensor_size_mm: size of the sensor in millimeters on the Y axis.
*/
struct f11_2d_sensor_queries {
/* query1 */
rmi_get_platform_data(fn->rmi_dev);
int error;
- /* can happen if f30_data.disable is set */
+ /* can happen if gpio_data.disable is set */
if (!f30)
return 0;
- if (pdata->f30_data.trackstick_buttons) {
+ if (pdata->gpio_data.trackstick_buttons) {
/* Try [re-]establish link to F03. */
f30->f03 = rmi_find_function(fn->rmi_dev, 0x03);
f30->trackstick_buttons = f30->f03 != NULL;
}
- if (pdata->f30_data.disable) {
+ if (pdata->gpio_data.disable) {
drv->clear_irq_bits(fn->rmi_dev, fn->irq_mask);
} else {
/* Write Control Register values back to device */
if (!rmi_f30_is_valid_button(i, f30->ctrl))
continue;
- if (pdata->f30_data.trackstick_buttons &&
+ if (pdata->gpio_data.trackstick_buttons &&
i >= TRACKSTICK_RANGE_START && i < TRACKSTICK_RANGE_END) {
f30->gpioled_key_map[i] = trackstick_button++;
- } else if (!pdata->f30_data.buttonpad || !button_mapped) {
+ } else if (!pdata->gpio_data.buttonpad || !button_mapped) {
f30->gpioled_key_map[i] = button;
input_set_capability(input, EV_KEY, button++);
button_mapped = true;
* but I am not sure, so use only the pdata info and the number of
* mapped buttons.
*/
- if (pdata->f30_data.buttonpad || (button - BTN_LEFT == 1))
+ if (pdata->gpio_data.buttonpad || (button - BTN_LEFT == 1))
__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
return 0;
struct f30_data *f30;
int error;
- if (pdata->f30_data.disable)
+ if (pdata->gpio_data.disable)
return 0;
if (!drv_data->input) {
f34->bl_version = 6;
} else if (f34->bootloader_id[1] == 7) {
f34->bl_version = 7;
+ } else if (f34->bootloader_id[1] == 8) {
+ f34->bl_version = 8;
} else {
- dev_err(&f34->fn->dev, "%s: Unrecognized bootloader version\n",
- __func__);
+ dev_err(&f34->fn->dev,
+ "%s: Unrecognized bootloader version: %d (%c) %d (%c)\n",
+ __func__,
+ f34->bootloader_id[0], f34->bootloader_id[0],
+ f34->bootloader_id[1], f34->bootloader_id[1]);
return -EINVAL;
}
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2012-2020 Synaptics Incorporated
+ */
+
+#include <linux/kernel.h>
+#include <linux/rmi.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include "rmi_driver.h"
+
+#define RMI_F3A_MAX_GPIO_COUNT 128
+#define RMI_F3A_MAX_REG_SIZE DIV_ROUND_UP(RMI_F3A_MAX_GPIO_COUNT, 8)
+
+/* Defs for Query 0 */
+#define RMI_F3A_GPIO_COUNT 0x7F
+
+#define RMI_F3A_DATA_REGS_MAX_SIZE RMI_F3A_MAX_REG_SIZE
+
+#define TRACKSTICK_RANGE_START 3
+#define TRACKSTICK_RANGE_END 6
+
+struct f3a_data {
+ /* Query Data */
+ u8 gpio_count;
+
+ u8 register_count;
+
+ u8 data_regs[RMI_F3A_DATA_REGS_MAX_SIZE];
+ u16 *gpio_key_map;
+
+ struct input_dev *input;
+
+ struct rmi_function *f03;
+ bool trackstick_buttons;
+};
+
+static void rmi_f3a_report_button(struct rmi_function *fn,
+ struct f3a_data *f3a, unsigned int button)
+{
+ u16 key_code = f3a->gpio_key_map[button];
+ bool key_down = !(f3a->data_regs[0] & BIT(button));
+
+ if (f3a->trackstick_buttons &&
+ button >= TRACKSTICK_RANGE_START &&
+ button <= TRACKSTICK_RANGE_END) {
+ rmi_f03_overwrite_button(f3a->f03, key_code, key_down);
+ } else {
+ rmi_dbg(RMI_DEBUG_FN, &fn->dev,
+ "%s: call input report key (0x%04x) value (0x%02x)",
+ __func__, key_code, key_down);
+ input_report_key(f3a->input, key_code, key_down);
+ }
+}
+
+static irqreturn_t rmi_f3a_attention(int irq, void *ctx)
+{
+ struct rmi_function *fn = ctx;
+ struct f3a_data *f3a = dev_get_drvdata(&fn->dev);
+ struct rmi_driver_data *drvdata = dev_get_drvdata(&fn->rmi_dev->dev);
+ int error;
+ int i;
+
+ if (drvdata->attn_data.data) {
+ if (drvdata->attn_data.size < f3a->register_count) {
+ dev_warn(&fn->dev,
+ "F3A interrupted, but data is missing\n");
+ return IRQ_HANDLED;
+ }
+ memcpy(f3a->data_regs, drvdata->attn_data.data,
+ f3a->register_count);
+ drvdata->attn_data.data += f3a->register_count;
+ drvdata->attn_data.size -= f3a->register_count;
+ } else {
+ error = rmi_read_block(fn->rmi_dev, fn->fd.data_base_addr,
+ f3a->data_regs, f3a->register_count);
+ if (error) {
+ dev_err(&fn->dev,
+ "%s: Failed to read F3a data registers: %d\n",
+ __func__, error);
+ return IRQ_RETVAL(error);
+ }
+ }
+
+ for (i = 0; i < f3a->gpio_count; i++)
+ if (f3a->gpio_key_map[i] != KEY_RESERVED)
+ rmi_f3a_report_button(fn, f3a, i);
+ if (f3a->trackstick_buttons)
+ rmi_f03_commit_buttons(f3a->f03);
+
+ return IRQ_HANDLED;
+}
+
+static int rmi_f3a_config(struct rmi_function *fn)
+{
+ struct f3a_data *f3a = dev_get_drvdata(&fn->dev);
+ struct rmi_driver *drv = fn->rmi_dev->driver;
+ const struct rmi_device_platform_data *pdata =
+ rmi_get_platform_data(fn->rmi_dev);
+
+ if (!f3a)
+ return 0;
+
+ if (pdata->gpio_data.trackstick_buttons) {
+ /* Try [re-]establish link to F03. */
+ f3a->f03 = rmi_find_function(fn->rmi_dev, 0x03);
+ f3a->trackstick_buttons = f3a->f03 != NULL;
+ }
+
+ drv->set_irq_bits(fn->rmi_dev, fn->irq_mask);
+
+ return 0;
+}
+
+static bool rmi_f3a_is_valid_button(int button, struct f3a_data *f3a,
+ u8 *query1_regs, u8 *ctrl1_regs)
+{
+ /* gpio exist && direction input */
+ return (query1_regs[0] & BIT(button)) && !(ctrl1_regs[0] & BIT(button));
+}
+
+static int rmi_f3a_map_gpios(struct rmi_function *fn, struct f3a_data *f3a,
+ u8 *query1_regs, u8 *ctrl1_regs)
+{
+ const struct rmi_device_platform_data *pdata =
+ rmi_get_platform_data(fn->rmi_dev);
+ struct input_dev *input = f3a->input;
+ unsigned int button = BTN_LEFT;
+ unsigned int trackstick_button = BTN_LEFT;
+ bool button_mapped = false;
+ int i;
+ int button_count = min_t(u8, f3a->gpio_count, TRACKSTICK_RANGE_END);
+
+ f3a->gpio_key_map = devm_kcalloc(&fn->dev,
+ button_count,
+ sizeof(f3a->gpio_key_map[0]),
+ GFP_KERNEL);
+ if (!f3a->gpio_key_map) {
+ dev_err(&fn->dev, "Failed to allocate gpio map memory.\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < button_count; i++) {
+ if (!rmi_f3a_is_valid_button(i, f3a, query1_regs, ctrl1_regs))
+ continue;
+
+ if (pdata->gpio_data.trackstick_buttons &&
+ i >= TRACKSTICK_RANGE_START &&
+ i < TRACKSTICK_RANGE_END) {
+ f3a->gpio_key_map[i] = trackstick_button++;
+ } else if (!pdata->gpio_data.buttonpad || !button_mapped) {
+ f3a->gpio_key_map[i] = button;
+ input_set_capability(input, EV_KEY, button++);
+ button_mapped = true;
+ }
+ }
+ input->keycode = f3a->gpio_key_map;
+ input->keycodesize = sizeof(f3a->gpio_key_map[0]);
+ input->keycodemax = f3a->gpio_count;
+
+ if (pdata->gpio_data.buttonpad || (button - BTN_LEFT == 1))
+ __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
+
+ return 0;
+}
+
+static int rmi_f3a_initialize(struct rmi_function *fn, struct f3a_data *f3a)
+{
+ u8 query1[RMI_F3A_MAX_REG_SIZE];
+ u8 ctrl1[RMI_F3A_MAX_REG_SIZE];
+ u8 buf;
+ int error;
+
+ error = rmi_read(fn->rmi_dev, fn->fd.query_base_addr, &buf);
+ if (error < 0) {
+ dev_err(&fn->dev, "Failed to read general info register: %d\n",
+ error);
+ return -ENODEV;
+ }
+
+ f3a->gpio_count = buf & RMI_F3A_GPIO_COUNT;
+ f3a->register_count = DIV_ROUND_UP(f3a->gpio_count, 8);
+
+ /* Query1 -> gpio exist */
+ error = rmi_read_block(fn->rmi_dev, fn->fd.query_base_addr + 1,
+ query1, f3a->register_count);
+ if (error) {
+ dev_err(&fn->dev, "Failed to read query1 register\n");
+ return error;
+ }
+
+ /* Ctrl1 -> gpio direction */
+ error = rmi_read_block(fn->rmi_dev, fn->fd.control_base_addr + 1,
+ ctrl1, f3a->register_count);
+ if (error) {
+ dev_err(&fn->dev, "Failed to read control1 register\n");
+ return error;
+ }
+
+ error = rmi_f3a_map_gpios(fn, f3a, query1, ctrl1);
+ if (error)
+ return error;
+
+ return 0;
+}
+
+static int rmi_f3a_probe(struct rmi_function *fn)
+{
+ struct rmi_device *rmi_dev = fn->rmi_dev;
+ struct rmi_driver_data *drv_data = dev_get_drvdata(&rmi_dev->dev);
+ struct f3a_data *f3a;
+ int error;
+
+ if (!drv_data->input) {
+ dev_info(&fn->dev, "F3A: no input device found, ignoring\n");
+ return -ENXIO;
+ }
+
+ f3a = devm_kzalloc(&fn->dev, sizeof(*f3a), GFP_KERNEL);
+ if (!f3a)
+ return -ENOMEM;
+
+ f3a->input = drv_data->input;
+
+ error = rmi_f3a_initialize(fn, f3a);
+ if (error)
+ return error;
+
+ dev_set_drvdata(&fn->dev, f3a);
+ return 0;
+}
+
+struct rmi_function_handler rmi_f3a_handler = {
+ .driver = {
+ .name = "rmi4_f3a",
+ },
+ .func = 0x3a,
+ .probe = rmi_f3a_probe,
+ .config = rmi_f3a_config,
+ .attention = rmi_f3a_attention,
+};
/**
* enum rmi_f54_report_type - RMI4 F54 report types
*
+ * @F54_REPORT_NONE: No Image Report.
+ *
* @F54_8BIT_IMAGE: Normalized 8-Bit Image Report. The capacitance variance
* from baseline for each pixel.
*
* Report. Set Low reference to its minimum value and high
* references to its maximum value, then report the raw
* capacitance for each pixel.
+ *
+ * @F54_MAX_REPORT_TYPE:
+ * Maximum number of Report Types. Used for sanity
+ * checking.
*/
enum rmi_f54_report_type {
F54_REPORT_NONE = 0,
* struct rmi_i2c_xport - stores information for i2c communication
*
* @xport: The transport interface structure
+ * @client: The I2C client device structure
*
* @page_mutex: Locks current page to avoid changing pages in unexpected ways.
* @page: Keeps track of the current virtual page
*
* @tx_buf: Buffer used for transmitting data to the sensor over i2c.
* @tx_buf_size: Size of the buffer
+ *
+ * @supplies: Array of voltage regulators
+ * @startup_delay: Milliseconds to pause after powering up the regulators
*/
struct rmi_i2c_xport {
struct rmi_transport_dev xport;
struct sun4i_ps2data *drvdata;
struct serio *serio;
struct device *dev = &pdev->dev;
- unsigned int irq;
int error;
drvdata = kzalloc(sizeof(struct sun4i_ps2data), GFP_KERNEL);
writel(0, drvdata->reg_base + PS2_REG_GCTL);
/* Get IRQ for the device */
- irq = platform_get_irq(pdev, 0);
- if (!irq) {
- dev_err(dev, "no IRQ found\n");
- error = -ENXIO;
+ drvdata->irq = platform_get_irq(pdev, 0);
+ if (drvdata->irq < 0) {
+ error = drvdata->irq;
goto err_disable_clk;
}
- drvdata->irq = irq;
drvdata->serio = serio;
drvdata->dev = dev;
To compile this driver as a module, choose M here: the
module will be called iqs5xx.
+config TOUCHSCREEN_ZINITIX
+ tristate "Zinitix touchscreen support"
+ depends on I2C
+ help
+ Say Y here if you have a touchscreen using Zinitix bt541,
+ or something similar enough.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called zinitix.
+
endif
obj-$(CONFIG_TOUCHSCREEN_ROHM_BU21023) += rohm_bu21023.o
obj-$(CONFIG_TOUCHSCREEN_RASPBERRYPI_FW) += raspberrypi-ts.o
obj-$(CONFIG_TOUCHSCREEN_IQS5XX) += iqs5xx.o
+obj-$(CONFIG_TOUCHSCREEN_ZINITIX) += zinitix.o
#include <linux/spi/ads7846.h>
#include <linux/regulator/consumer.h>
#include <linux/module.h>
-#include <asm/irq.h>
+#include <asm/unaligned.h>
/*
* This code has been heavily tested on a Nokia 770, and lightly
/* this driver doesn't aim at the peak continuous sample rate */
#define SAMPLE_BITS (8 /*cmd*/ + 16 /*sample*/ + 2 /* before, after */)
-struct ts_event {
+struct ads7846_buf {
+ u8 cmd;
/*
- * For portability, we can't read 12 bit values using SPI (which
- * would make the controller deliver them as native byte order u16
- * with msbs zeroed). Instead, we read them as two 8-bit values,
- * *** WHICH NEED BYTESWAPPING *** and range adjustment.
+ * This union is a temporary hack. The driver does an in-place
+ * endianness conversion. This will be cleaned up in the next
+ * patch.
*/
- u16 x;
- u16 y;
- u16 z1, z2;
- bool ignore;
- u8 x_buf[3];
- u8 y_buf[3];
+ union {
+ __be16 data_be16;
+ u16 data;
+ };
+} __packed;
+
+
+struct ts_event {
+ bool ignore;
+ struct ads7846_buf x;
+ struct ads7846_buf y;
+ struct ads7846_buf z1;
+ struct ads7846_buf z2;
};
/*
* systems where main memory is not DMA-coherent (most non-x86 boards).
*/
struct ads7846_packet {
- u8 read_x, read_y, read_z1, read_z2, pwrdown;
- u16 dummy; /* for the pwrdown read */
- struct ts_event tc;
- /* for ads7845 with mpc5121 psc spi we use 3-byte buffers */
- u8 read_x_cmd[3], read_y_cmd[3], pwrdown_cmd[3];
+ struct ts_event tc;
+ struct ads7846_buf read_x_cmd;
+ struct ads7846_buf read_y_cmd;
+ struct ads7846_buf read_z1_cmd;
+ struct ads7846_buf read_z2_cmd;
+ struct ads7846_buf pwrdown_cmd;
};
struct ads7846 {
#define REF_ON (READ_12BIT_DFR(x, 1, 1))
#define REF_OFF (READ_12BIT_DFR(y, 0, 0))
+static int get_pendown_state(struct ads7846 *ts)
+{
+ if (ts->get_pendown_state)
+ return ts->get_pendown_state();
+
+ return !gpio_get_value(ts->gpio_pendown);
+}
+
+static void ads7846_report_pen_up(struct ads7846 *ts)
+{
+ struct input_dev *input = ts->input;
+
+ input_report_key(input, BTN_TOUCH, 0);
+ input_report_abs(input, ABS_PRESSURE, 0);
+ input_sync(input);
+
+ ts->pendown = false;
+ dev_vdbg(&ts->spi->dev, "UP\n");
+}
+
/* Must be called with ts->lock held */
static void ads7846_stop(struct ads7846 *ts)
{
static void ads7846_restart(struct ads7846 *ts)
{
if (!ts->disabled && !ts->suspended) {
+ /* Check if pen was released since last stop */
+ if (ts->pendown && !get_pendown_state(ts))
+ ads7846_report_pen_up(ts);
+
/* Tell IRQ thread that it may poll the device. */
ts->stopped = false;
mb();
if (status == 0) {
/* BE12 value, then padding */
- status = be16_to_cpu(*((u16 *)&req->sample[1]));
+ status = get_unaligned_be16(&req->sample[1]);
status = status >> 3;
status &= 0x0fff;
}
static umode_t ads7846_is_visible(struct kobject *kobj, struct attribute *attr,
int index)
{
- struct device *dev = container_of(kobj, struct device, kobj);
+ struct device *dev = kobj_to_dev(kobj);
struct ads7846 *ts = dev_get_drvdata(dev);
if (ts->model == 7843 && index < 2) /* in0, in1 */
/*--------------------------------------------------------------------------*/
-static int get_pendown_state(struct ads7846 *ts)
-{
- if (ts->get_pendown_state)
- return ts->get_pendown_state();
-
- return !gpio_get_value(ts->gpio_pendown);
-}
-
static void null_wait_for_sync(void)
{
}
int value;
struct spi_transfer *t =
list_entry(m->transfers.prev, struct spi_transfer, transfer_list);
+ struct ads7846_buf *buf = t->rx_buf;
- if (ts->model == 7845) {
- value = be16_to_cpup((__be16 *)&(((char *)t->rx_buf)[1]));
- } else {
- /*
- * adjust: on-wire is a must-ignore bit, a BE12 value, then
- * padding; built from two 8 bit values written msb-first.
- */
- value = be16_to_cpup((__be16 *)t->rx_buf);
- }
+ value = be16_to_cpup(&buf->data_be16);
/* enforce ADC output is 12 bits width */
return (value >> 3) & 0xfff;
{
struct spi_transfer *t =
list_entry(m->transfers.prev, struct spi_transfer, transfer_list);
+ struct ads7846_buf *buf = t->rx_buf;
- *(u16 *)t->rx_buf = val;
+ buf->data = val;
}
static void ads7846_read_state(struct ads7846 *ts)
* from on-the-wire format as part of debouncing to get stable
* readings.
*/
+ x = packet->tc.x.data;
+ y = packet->tc.y.data;
if (ts->model == 7845) {
- x = *(u16 *)packet->tc.x_buf;
- y = *(u16 *)packet->tc.y_buf;
z1 = 0;
z2 = 0;
} else {
- x = packet->tc.x;
- y = packet->tc.y;
- z1 = packet->tc.z1;
- z2 = packet->tc.z2;
+ z1 = packet->tc.z1.data;
+ z2 = packet->tc.z2.data;
}
/* range filtering */
/* compute touch pressure resistance using equation #2 */
Rt = z2;
Rt -= z1;
- Rt *= x;
Rt *= ts->x_plate_ohms;
+ Rt = DIV_ROUND_CLOSEST(Rt, 16);
+ Rt *= x;
Rt /= z1;
- Rt = (Rt + 2047) >> 12;
+ Rt = DIV_ROUND_CLOSEST(Rt, 256);
} else {
Rt = 0;
}
msecs_to_jiffies(TS_POLL_PERIOD));
}
- if (ts->pendown && !ts->stopped) {
- struct input_dev *input = ts->input;
-
- input_report_key(input, BTN_TOUCH, 0);
- input_report_abs(input, ABS_PRESSURE, 0);
- input_sync(input);
-
- ts->pendown = false;
- dev_vdbg(&ts->spi->dev, "UP\n");
- }
+ if (ts->pendown && !ts->stopped)
+ ads7846_report_pen_up(ts);
return IRQ_HANDLED;
}
spi_message_init(m);
m->context = ts;
- if (ts->model == 7845) {
- packet->read_y_cmd[0] = READ_Y(vref);
- packet->read_y_cmd[1] = 0;
- packet->read_y_cmd[2] = 0;
- x->tx_buf = &packet->read_y_cmd[0];
- x->rx_buf = &packet->tc.y_buf[0];
- x->len = 3;
- spi_message_add_tail(x, m);
- } else {
- /* y- still on; turn on only y+ (and ADC) */
- packet->read_y = READ_Y(vref);
- x->tx_buf = &packet->read_y;
- x->len = 1;
- spi_message_add_tail(x, m);
-
- x++;
- x->rx_buf = &packet->tc.y;
- x->len = 2;
- spi_message_add_tail(x, m);
- }
+ packet->read_y_cmd.cmd = READ_Y(vref);
+ x->tx_buf = &packet->read_y_cmd;
+ x->rx_buf = &packet->tc.y;
+ x->len = 3;
+ spi_message_add_tail(x, m);
/*
* The first sample after switching drivers can be low quality;
if (pdata->settle_delay_usecs) {
x->delay.value = pdata->settle_delay_usecs;
x->delay.unit = SPI_DELAY_UNIT_USECS;
-
x++;
- x->tx_buf = &packet->read_y;
- x->len = 1;
- spi_message_add_tail(x, m);
- x++;
+ x->tx_buf = &packet->read_y_cmd;
x->rx_buf = &packet->tc.y;
- x->len = 2;
+ x->len = 3;
spi_message_add_tail(x, m);
}
spi_message_init(m);
m->context = ts;
- if (ts->model == 7845) {
- x++;
- packet->read_x_cmd[0] = READ_X(vref);
- packet->read_x_cmd[1] = 0;
- packet->read_x_cmd[2] = 0;
- x->tx_buf = &packet->read_x_cmd[0];
- x->rx_buf = &packet->tc.x_buf[0];
- x->len = 3;
- spi_message_add_tail(x, m);
- } else {
- /* turn y- off, x+ on, then leave in lowpower */
- x++;
- packet->read_x = READ_X(vref);
- x->tx_buf = &packet->read_x;
- x->len = 1;
- spi_message_add_tail(x, m);
-
- x++;
- x->rx_buf = &packet->tc.x;
- x->len = 2;
- spi_message_add_tail(x, m);
- }
+ /* turn y- off, x+ on, then leave in lowpower */
+ x++;
+ packet->read_x_cmd.cmd = READ_X(vref);
+ x->tx_buf = &packet->read_x_cmd;
+ x->rx_buf = &packet->tc.x;
+ x->len = 3;
+ spi_message_add_tail(x, m);
/* ... maybe discard first sample ... */
if (pdata->settle_delay_usecs) {
x->delay.unit = SPI_DELAY_UNIT_USECS;
x++;
- x->tx_buf = &packet->read_x;
- x->len = 1;
- spi_message_add_tail(x, m);
-
- x++;
+ x->tx_buf = &packet->read_x_cmd;
x->rx_buf = &packet->tc.x;
- x->len = 2;
+ x->len = 3;
spi_message_add_tail(x, m);
}
m->context = ts;
x++;
- packet->read_z1 = READ_Z1(vref);
- x->tx_buf = &packet->read_z1;
- x->len = 1;
- spi_message_add_tail(x, m);
-
- x++;
+ packet->read_z1_cmd.cmd = READ_Z1(vref);
+ x->tx_buf = &packet->read_z1_cmd;
x->rx_buf = &packet->tc.z1;
- x->len = 2;
+ x->len = 3;
spi_message_add_tail(x, m);
/* ... maybe discard first sample ... */
x->delay.unit = SPI_DELAY_UNIT_USECS;
x++;
- x->tx_buf = &packet->read_z1;
- x->len = 1;
- spi_message_add_tail(x, m);
-
- x++;
+ x->tx_buf = &packet->read_z1_cmd;
x->rx_buf = &packet->tc.z1;
- x->len = 2;
+ x->len = 3;
spi_message_add_tail(x, m);
}
m->context = ts;
x++;
- packet->read_z2 = READ_Z2(vref);
- x->tx_buf = &packet->read_z2;
- x->len = 1;
- spi_message_add_tail(x, m);
-
- x++;
+ packet->read_z2_cmd.cmd = READ_Z2(vref);
+ x->tx_buf = &packet->read_z2_cmd;
x->rx_buf = &packet->tc.z2;
- x->len = 2;
+ x->len = 3;
spi_message_add_tail(x, m);
/* ... maybe discard first sample ... */
x->delay.unit = SPI_DELAY_UNIT_USECS;
x++;
- x->tx_buf = &packet->read_z2;
- x->len = 1;
- spi_message_add_tail(x, m);
-
- x++;
+ x->tx_buf = &packet->read_z2_cmd;
x->rx_buf = &packet->tc.z2;
- x->len = 2;
+ x->len = 3;
spi_message_add_tail(x, m);
}
}
spi_message_init(m);
m->context = ts;
- if (ts->model == 7845) {
- x++;
- packet->pwrdown_cmd[0] = PWRDOWN;
- packet->pwrdown_cmd[1] = 0;
- packet->pwrdown_cmd[2] = 0;
- x->tx_buf = &packet->pwrdown_cmd[0];
- x->len = 3;
- } else {
- x++;
- packet->pwrdown = PWRDOWN;
- x->tx_buf = &packet->pwrdown;
- x->len = 1;
- spi_message_add_tail(x, m);
-
- x++;
- x->rx_buf = &packet->dummy;
- x->len = 2;
- }
+ x++;
+ packet->pwrdown_cmd.cmd = PWRDOWN;
+ x->tx_buf = &packet->pwrdown_cmd;
+ x->len = 3;
CS_CHANGE(*x);
spi_message_add_tail(x, m);
#define CY_CORE_STARTUP_RETRY_COUNT 3
+static const char * const cyttsp4_tch_abs_string[] = {
+ [CY_TCH_X] = "X",
+ [CY_TCH_Y] = "Y",
+ [CY_TCH_P] = "P",
+ [CY_TCH_T] = "T",
+ [CY_TCH_E] = "E",
+ [CY_TCH_O] = "O",
+ [CY_TCH_W] = "W",
+ [CY_TCH_MAJ] = "MAJ",
+ [CY_TCH_MIN] = "MIN",
+ [CY_TCH_OR] = "OR",
+ [CY_TCH_NUM_ABS] = "INVALID"
+};
+
static const u8 ldr_exit[] = {
0xFF, 0x01, 0x3B, 0x00, 0x00, 0x4F, 0x6D, 0x17
};
CY_TCH_NUM_ABS
};
-static const char * const cyttsp4_tch_abs_string[] = {
- [CY_TCH_X] = "X",
- [CY_TCH_Y] = "Y",
- [CY_TCH_P] = "P",
- [CY_TCH_T] = "T",
- [CY_TCH_E] = "E",
- [CY_TCH_O] = "O",
- [CY_TCH_W] = "W",
- [CY_TCH_MAJ] = "MAJ",
- [CY_TCH_MIN] = "MIN",
- [CY_TCH_OR] = "OR",
- [CY_TCH_NUM_ABS] = "INVALID"
-};
-
struct cyttsp4_touch {
int abs[CY_TCH_NUM_ABS];
};
#define EKTF2127_RESPONSE 0x52
#define EKTF2127_REQUEST 0x53
#define EKTF2127_HELLO 0x55
+#define EKTF2127_REPORT2 0x5a
#define EKTF2127_REPORT 0x5d
#define EKTF2127_CALIB_DONE 0x66
input_sync(ts->input);
}
+static void ektf2127_report2_contact(struct ektf2127_ts *ts, int slot,
+ const u8 *buf, bool active)
+{
+ input_mt_slot(ts->input, slot);
+ input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, active);
+
+ if (active) {
+ int x = (buf[0] & 0xf0) << 4 | buf[1];
+ int y = (buf[0] & 0x0f) << 8 | buf[2];
+
+ touchscreen_report_pos(ts->input, &ts->prop, x, y, true);
+ }
+}
+
+static void ektf2127_report2_event(struct ektf2127_ts *ts, const u8 *buf)
+{
+ ektf2127_report2_contact(ts, 0, &buf[1], !!(buf[7] & 2));
+ ektf2127_report2_contact(ts, 1, &buf[4], !!(buf[7] & 4));
+
+ input_mt_sync_frame(ts->input);
+ input_sync(ts->input);
+}
+
static irqreturn_t ektf2127_irq(int irq, void *dev_id)
{
struct ektf2127_ts *ts = dev_id;
ektf2127_report_event(ts, buf);
break;
+ case EKTF2127_REPORT2:
+ ektf2127_report2_event(ts, buf);
+ break;
+
case EKTF2127_NOISE:
if (buf[1] == EKTF2127_ENV_NOISY)
dev_dbg(dev, "Environment is electrically noisy\n");
#ifdef CONFIG_OF
static const struct of_device_id ektf2127_of_match[] = {
{ .compatible = "elan,ektf2127" },
+ { .compatible = "elan,ektf2132" },
{}
};
MODULE_DEVICE_TABLE(of, ektf2127_of_match);
static const struct i2c_device_id ektf2127_i2c_id[] = {
{ "ektf2127", 0 },
+ { "ektf2132", 0 },
{}
};
MODULE_DEVICE_TABLE(i2c, ektf2127_i2c_id);
};
module_i2c_driver(ektf2127_driver);
-MODULE_DESCRIPTION("ELAN eKTF2127 I2C Touchscreen Driver");
+MODULE_DESCRIPTION("ELAN eKTF2127/eKTF2132 I2C Touchscreen Driver");
MODULE_AUTHOR("Michel Verlaan, Siebren Vroegindeweij");
MODULE_LICENSE("GPL");
/* FW read command, 0x53 0x?? 0x0, 0x01 */
#define E_ELAN_INFO_FW_VER 0x00
#define E_ELAN_INFO_BC_VER 0x10
-#define E_ELAN_INFO_REK 0xE0
+#define E_ELAN_INFO_REK 0xD0
#define E_ELAN_INFO_TEST_VER 0xE0
#define E_ELAN_INFO_FW_ID 0xF0
#define E_INFO_OSR 0xD6
u8 bc_version;
u8 iap_version;
u16 hw_version;
+ u8 major_res;
unsigned int x_res; /* resolution in units/mm */
unsigned int y_res;
unsigned int x_max;
rows = resp[2] + resp[6] + resp[10];
cols = resp[3] + resp[7] + resp[11];
+ /* Get report resolution value of ABS_MT_TOUCH_MAJOR */
+ ts->major_res = resp[16];
+
/* Process mm_to_pixel information */
error = elants_i2c_execute_command(client,
get_osr_cmd, sizeof(get_osr_cmd),
0, MT_TOOL_PALM, 0, 0);
input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->x_res);
input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->y_res);
+ if (ts->major_res > 0)
+ input_abs_set_res(ts->input, ABS_MT_TOUCH_MAJOR, ts->major_res);
touchscreen_parse_properties(ts->input, true, &ts->prop);
{
struct imx6ul_tsc *tsc = dev_id;
u32 coco;
- u32 value;
coco = readl(tsc->adc_regs + REG_ADC_HS);
if (coco & 0x01) {
- value = readl(tsc->adc_regs + REG_ADC_R0);
+ readl(tsc->adc_regs + REG_ADC_R0);
complete(&tsc->completion);
}
return IRQ_HANDLED;
}
-static int imx6ul_tsc_open(struct input_dev *input_dev)
+static int imx6ul_tsc_start(struct imx6ul_tsc *tsc)
{
- struct imx6ul_tsc *tsc = input_get_drvdata(input_dev);
int err;
err = clk_prepare_enable(tsc->adc_clk);
return err;
}
-static void imx6ul_tsc_close(struct input_dev *input_dev)
+static void imx6ul_tsc_stop(struct imx6ul_tsc *tsc)
{
- struct imx6ul_tsc *tsc = input_get_drvdata(input_dev);
-
imx6ul_tsc_disable(tsc);
clk_disable_unprepare(tsc->tsc_clk);
clk_disable_unprepare(tsc->adc_clk);
}
+
+static int imx6ul_tsc_open(struct input_dev *input_dev)
+{
+ struct imx6ul_tsc *tsc = input_get_drvdata(input_dev);
+
+ return imx6ul_tsc_start(tsc);
+}
+
+static void imx6ul_tsc_close(struct input_dev *input_dev)
+{
+ struct imx6ul_tsc *tsc = input_get_drvdata(input_dev);
+
+ imx6ul_tsc_stop(tsc);
+}
+
static int imx6ul_tsc_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
mutex_lock(&input_dev->mutex);
- if (input_dev->users) {
- imx6ul_tsc_disable(tsc);
-
- clk_disable_unprepare(tsc->tsc_clk);
- clk_disable_unprepare(tsc->adc_clk);
- }
+ if (input_dev->users)
+ imx6ul_tsc_stop(tsc);
mutex_unlock(&input_dev->mutex);
mutex_lock(&input_dev->mutex);
- if (input_dev->users) {
- retval = clk_prepare_enable(tsc->adc_clk);
- if (retval)
- goto out;
-
- retval = clk_prepare_enable(tsc->tsc_clk);
- if (retval) {
- clk_disable_unprepare(tsc->adc_clk);
- goto out;
- }
-
- retval = imx6ul_tsc_init(tsc);
- }
+ if (input_dev->users)
+ retval = imx6ul_tsc_start(tsc);
-out:
mutex_unlock(&input_dev->mutex);
+
return retval;
}
/* Touch relative info */
#define RM_MAX_RETRIES 3
+#define RM_RETRY_DELAY_MS 20
#define RM_MAX_TOUCH_NUM 10
#define RM_BOOT_DELAY_MS 100
bool wake_irq_enabled;
};
-static int raydium_i2c_send(struct i2c_client *client,
- u8 addr, const void *data, size_t len)
+static int raydium_i2c_xfer(struct i2c_client *client,
+ u32 addr, void *data, size_t len, bool is_read)
{
- u8 *buf;
- int tries = 0;
- int ret;
-
- buf = kmalloc(len + 1, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
-
- buf[0] = addr;
- memcpy(buf + 1, data, len);
-
- do {
- ret = i2c_master_send(client, buf, len + 1);
- if (likely(ret == len + 1))
- break;
-
- msleep(20);
- } while (++tries < RM_MAX_RETRIES);
-
- kfree(buf);
-
- if (unlikely(ret != len + 1)) {
- if (ret >= 0)
- ret = -EIO;
- dev_err(&client->dev, "%s failed: %d\n", __func__, ret);
- return ret;
- }
+ struct raydium_bank_switch_header {
+ u8 cmd;
+ __be32 be_addr;
+ } __packed header = {
+ .cmd = RM_CMD_BANK_SWITCH,
+ .be_addr = cpu_to_be32(addr),
+ };
- return 0;
-}
+ u8 reg_addr = addr & 0xff;
-static int raydium_i2c_read(struct i2c_client *client,
- u8 addr, void *data, size_t len)
-{
struct i2c_msg xfer[] = {
+ {
+ .addr = client->addr,
+ .len = sizeof(header),
+ .buf = (u8 *)&header,
+ },
{
.addr = client->addr,
.len = 1,
- .buf = &addr,
+ .buf = ®_addr,
},
{
.addr = client->addr,
- .flags = I2C_M_RD,
.len = len,
.buf = data,
+ .flags = is_read ? I2C_M_RD : 0,
}
};
+
+ /*
+ * If address is greater than 255, then RM_CMD_BANK_SWITCH needs to be
+ * sent first. Else, skip the header i.e. xfer[0].
+ */
+ int xfer_start_idx = (addr > 0xff) ? 0 : 1;
+ size_t xfer_count = ARRAY_SIZE(xfer) - xfer_start_idx;
int ret;
- ret = i2c_transfer(client->adapter, xfer, ARRAY_SIZE(xfer));
- if (unlikely(ret != ARRAY_SIZE(xfer)))
- return ret < 0 ? ret : -EIO;
+ ret = i2c_transfer(client->adapter, &xfer[xfer_start_idx], xfer_count);
+ if (likely(ret == xfer_count))
+ return 0;
+
+ return ret < 0 ? ret : -EIO;
+}
- return 0;
+static int raydium_i2c_send(struct i2c_client *client,
+ u32 addr, const void *data, size_t len)
+{
+ int tries = 0;
+ int error;
+
+ do {
+ error = raydium_i2c_xfer(client, addr, (void *)data, len,
+ false);
+ if (likely(!error))
+ return 0;
+
+ msleep(RM_RETRY_DELAY_MS);
+ } while (++tries < RM_MAX_RETRIES);
+
+ dev_err(&client->dev, "%s failed: %d\n", __func__, error);
+ return error;
}
-static int raydium_i2c_read_message(struct i2c_client *client,
- u32 addr, void *data, size_t len)
+static int raydium_i2c_read(struct i2c_client *client,
+ u32 addr, void *data, size_t len)
{
- __be32 be_addr;
size_t xfer_len;
int error;
while (len) {
xfer_len = min_t(size_t, len, RM_MAX_READ_SIZE);
-
- be_addr = cpu_to_be32(addr);
-
- error = raydium_i2c_send(client, RM_CMD_BANK_SWITCH,
- &be_addr, sizeof(be_addr));
- if (!error)
- error = raydium_i2c_read(client, addr & 0xff,
- data, xfer_len);
- if (error)
+ error = raydium_i2c_xfer(client, addr, data, xfer_len, true);
+ if (unlikely(error))
return error;
len -= xfer_len;
return 0;
}
-static int raydium_i2c_send_message(struct i2c_client *client,
- u32 addr, const void *data, size_t len)
-{
- __be32 be_addr = cpu_to_be32(addr);
- int error;
-
- error = raydium_i2c_send(client, RM_CMD_BANK_SWITCH,
- &be_addr, sizeof(be_addr));
- if (!error)
- error = raydium_i2c_send(client, addr & 0xff, data, len);
-
- return error;
-}
-
static int raydium_i2c_sw_reset(struct i2c_client *client)
{
const u8 soft_rst_cmd = 0x01;
int error;
- error = raydium_i2c_send_message(client, RM_RESET_MSG_ADDR,
- &soft_rst_cmd, sizeof(soft_rst_cmd));
+ error = raydium_i2c_send(client, RM_RESET_MSG_ADDR, &soft_rst_cmd,
+ sizeof(soft_rst_cmd));
if (error) {
dev_err(&client->dev, "software reset failed: %d\n", error);
return error;
if (error)
continue;
- error = raydium_i2c_read_message(client,
- le32_to_cpu(query_bank_addr),
- &ts->info, sizeof(ts->info));
+ error = raydium_i2c_read(client, le32_to_cpu(query_bank_addr),
+ &ts->info, sizeof(ts->info));
if (error)
continue;
if (ts->boot_mode != RAYDIUM_TS_MAIN)
goto out;
- error = raydium_i2c_read_message(ts->client, ts->data_bank_addr,
- ts->report_data, ts->pkg_size);
+ error = raydium_i2c_read(ts->client, ts->data_bank_addr,
+ ts->report_data, ts->pkg_size);
if (error)
goto out;
#define GRTS_MAX_POS_MASK GENMASK(11, 0)
/**
- * grts_state - generic resistive touch screen information struct
+ * struct grts_state - generic resistive touch screen information struct
* @pressure_min: number representing the minimum for the pressure
* @pressure: are we getting pressure info or not
* @iio_chans: list of channels acquired
#define ST1232_TS_NAME "st1232-ts"
#define ST1633_TS_NAME "st1633-ts"
+#define REG_XY_RESOLUTION 0x04
+#define REG_XY_COORDINATES 0x12
#define ST_TS_MAX_FINGERS 10
struct st_chip_info {
bool have_z;
- u16 max_x;
- u16 max_y;
u16 max_area;
u16 max_fingers;
- u8 start_reg;
};
struct st1232_ts_data {
u8 *read_buf;
};
-static int st1232_ts_read_data(struct st1232_ts_data *ts)
+static int st1232_ts_read_data(struct st1232_ts_data *ts, u8 reg)
{
struct i2c_client *client = ts->client;
- u8 start_reg = ts->chip_info->start_reg;
struct i2c_msg msg[] = {
{
.addr = client->addr,
- .len = sizeof(start_reg),
- .buf = &start_reg,
+ .len = sizeof(reg),
+ .buf = ®,
},
{
.addr = client->addr,
return 0;
}
+static int st1232_ts_read_resolution(struct st1232_ts_data *ts, u16 *max_x,
+ u16 *max_y)
+{
+ u8 *buf;
+ int error;
+
+ /* select resolution register */
+ error = st1232_ts_read_data(ts, REG_XY_RESOLUTION);
+ if (error)
+ return error;
+
+ buf = ts->read_buf;
+
+ *max_x = ((buf[0] & 0x0070) << 4) | buf[1];
+ *max_y = ((buf[0] & 0x0007) << 8) | buf[2];
+
+ return 0;
+}
+
static int st1232_ts_parse_and_report(struct st1232_ts_data *ts)
{
struct input_dev *input = ts->input_dev;
int count;
int error;
- error = st1232_ts_read_data(ts);
+ error = st1232_ts_read_data(ts, REG_XY_COORDINATES);
if (error)
goto out;
static const struct st_chip_info st1232_chip_info = {
.have_z = true,
- .max_x = 0x31f, /* 800 - 1 */
- .max_y = 0x1df, /* 480 -1 */
.max_area = 0xff,
.max_fingers = 2,
- .start_reg = 0x12,
};
static const struct st_chip_info st1633_chip_info = {
.have_z = false,
- .max_x = 0x13f, /* 320 - 1 */
- .max_y = 0x1df, /* 480 -1 */
.max_area = 0x00,
.max_fingers = 5,
- .start_reg = 0x12,
};
static int st1232_ts_probe(struct i2c_client *client,
const struct st_chip_info *match;
struct st1232_ts_data *ts;
struct input_dev *input_dev;
+ u16 max_x, max_y;
int error;
match = device_get_match_data(&client->dev);
input_dev->name = "st1232-touchscreen";
input_dev->id.bustype = BUS_I2C;
+ /* Read resolution from the chip */
+ error = st1232_ts_read_resolution(ts, &max_x, &max_y);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to read resolution: %d\n", error);
+ return error;
+ }
+
if (ts->chip_info->have_z)
input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0,
ts->chip_info->max_area, 0, 0);
input_set_abs_params(input_dev, ABS_MT_POSITION_X,
- 0, ts->chip_info->max_x, 0, 0);
+ 0, max_x, 0, 0);
input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
- 0, ts->chip_info->max_y, 0, 0);
+ 0, max_y, 0, 0);
touchscreen_parse_properties(input_dev, true, &ts->prop);
mutex_lock(&sdata->mutex);
- if (value & sdata->hover_enabled)
+ if (value && sdata->hover_enabled)
goto out;
if (sdata->running)
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+/* Register Map */
+
+#define BT541_SWRESET_CMD 0x0000
+#define BT541_WAKEUP_CMD 0x0001
+
+#define BT541_IDLE_CMD 0x0004
+#define BT541_SLEEP_CMD 0x0005
+
+#define BT541_CLEAR_INT_STATUS_CMD 0x0003
+#define BT541_CALIBRATE_CMD 0x0006
+#define BT541_SAVE_STATUS_CMD 0x0007
+#define BT541_SAVE_CALIBRATION_CMD 0x0008
+#define BT541_RECALL_FACTORY_CMD 0x000f
+
+#define BT541_THRESHOLD 0x0020
+
+#define BT541_LARGE_PALM_REJECT_AREA_TH 0x003F
+
+#define BT541_DEBUG_REG 0x0115 /* 0~7 */
+
+#define BT541_TOUCH_MODE 0x0010
+#define BT541_CHIP_REVISION 0x0011
+#define BT541_FIRMWARE_VERSION 0x0012
+
+#define ZINITIX_USB_DETECT 0x116
+
+#define BT541_MINOR_FW_VERSION 0x0121
+
+#define BT541_VENDOR_ID 0x001C
+#define BT541_HW_ID 0x0014
+
+#define BT541_DATA_VERSION_REG 0x0013
+#define BT541_SUPPORTED_FINGER_NUM 0x0015
+#define BT541_EEPROM_INFO 0x0018
+#define BT541_INITIAL_TOUCH_MODE 0x0019
+
+#define BT541_TOTAL_NUMBER_OF_X 0x0060
+#define BT541_TOTAL_NUMBER_OF_Y 0x0061
+
+#define BT541_DELAY_RAW_FOR_HOST 0x007f
+
+#define BT541_BUTTON_SUPPORTED_NUM 0x00B0
+#define BT541_BUTTON_SENSITIVITY 0x00B2
+#define BT541_DUMMY_BUTTON_SENSITIVITY 0X00C8
+
+#define BT541_X_RESOLUTION 0x00C0
+#define BT541_Y_RESOLUTION 0x00C1
+
+#define BT541_POINT_STATUS_REG 0x0080
+#define BT541_ICON_STATUS_REG 0x00AA
+
+#define BT541_POINT_COORD_REG (BT541_POINT_STATUS_REG + 2)
+
+#define BT541_AFE_FREQUENCY 0x0100
+#define BT541_DND_N_COUNT 0x0122
+#define BT541_DND_U_COUNT 0x0135
+
+#define BT541_RAWDATA_REG 0x0200
+
+#define BT541_EEPROM_INFO_REG 0x0018
+
+#define BT541_INT_ENABLE_FLAG 0x00f0
+#define BT541_PERIODICAL_INTERRUPT_INTERVAL 0x00f1
+
+#define BT541_BTN_WIDTH 0x016d
+
+#define BT541_CHECKSUM_RESULT 0x012c
+
+#define BT541_INIT_FLASH 0x01d0
+#define BT541_WRITE_FLASH 0x01d1
+#define BT541_READ_FLASH 0x01d2
+
+#define ZINITIX_INTERNAL_FLAG_02 0x011e
+#define ZINITIX_INTERNAL_FLAG_03 0x011f
+
+#define ZINITIX_I2C_CHECKSUM_WCNT 0x016a
+#define ZINITIX_I2C_CHECKSUM_RESULT 0x016c
+
+/* Interrupt & status register flags */
+
+#define BIT_PT_CNT_CHANGE BIT(0)
+#define BIT_DOWN BIT(1)
+#define BIT_MOVE BIT(2)
+#define BIT_UP BIT(3)
+#define BIT_PALM BIT(4)
+#define BIT_PALM_REJECT BIT(5)
+#define BIT_RESERVED_0 BIT(6)
+#define BIT_RESERVED_1 BIT(7)
+#define BIT_WEIGHT_CHANGE BIT(8)
+#define BIT_PT_NO_CHANGE BIT(9)
+#define BIT_REJECT BIT(10)
+#define BIT_PT_EXIST BIT(11)
+#define BIT_RESERVED_2 BIT(12)
+#define BIT_ERROR BIT(13)
+#define BIT_DEBUG BIT(14)
+#define BIT_ICON_EVENT BIT(15)
+
+#define SUB_BIT_EXIST BIT(0)
+#define SUB_BIT_DOWN BIT(1)
+#define SUB_BIT_MOVE BIT(2)
+#define SUB_BIT_UP BIT(3)
+#define SUB_BIT_UPDATE BIT(4)
+#define SUB_BIT_WAIT BIT(5)
+
+#define DEFAULT_TOUCH_POINT_MODE 2
+#define MAX_SUPPORTED_FINGER_NUM 5
+
+#define CHIP_ON_DELAY 15 // ms
+#define FIRMWARE_ON_DELAY 40 // ms
+
+struct point_coord {
+ __le16 x;
+ __le16 y;
+ u8 width;
+ u8 sub_status;
+ // currently unused, but needed as padding:
+ u8 minor_width;
+ u8 angle;
+};
+
+struct touch_event {
+ __le16 status;
+ u8 finger_cnt;
+ u8 time_stamp;
+ struct point_coord point_coord[MAX_SUPPORTED_FINGER_NUM];
+};
+
+struct bt541_ts_data {
+ struct i2c_client *client;
+ struct input_dev *input_dev;
+ struct touchscreen_properties prop;
+ struct regulator_bulk_data supplies[2];
+ u32 zinitix_mode;
+};
+
+static int zinitix_read_data(struct i2c_client *client,
+ u16 reg, void *values, size_t length)
+{
+ __le16 reg_le = cpu_to_le16(reg);
+ int ret;
+
+ /* A single i2c_transfer() transaction does not work here. */
+ ret = i2c_master_send(client, (u8 *)®_le, sizeof(reg_le));
+ if (ret != sizeof(reg_le))
+ return ret < 0 ? ret : -EIO;
+
+ ret = i2c_master_recv(client, (u8 *)values, length);
+ if (ret != length)
+ return ret < 0 ? ret : -EIO; ;
+
+ return 0;
+}
+
+static int zinitix_write_u16(struct i2c_client *client, u16 reg, u16 value)
+{
+ __le16 packet[2] = {cpu_to_le16(reg), cpu_to_le16(value)};
+ int ret;
+
+ ret = i2c_master_send(client, (u8 *)packet, sizeof(packet));
+ if (ret != sizeof(packet))
+ return ret < 0 ? ret : -EIO;
+
+ return 0;
+}
+
+static int zinitix_write_cmd(struct i2c_client *client, u16 reg)
+{
+ __le16 reg_le = cpu_to_le16(reg);
+ int ret;
+
+ ret = i2c_master_send(client, (u8 *)®_le, sizeof(reg_le));
+ if (ret != sizeof(reg_le))
+ return ret < 0 ? ret : -EIO;
+
+ return 0;
+}
+
+static bool zinitix_init_touch(struct bt541_ts_data *bt541)
+{
+ struct i2c_client *client = bt541->client;
+ int i;
+ int error;
+
+ error = zinitix_write_cmd(client, BT541_SWRESET_CMD);
+ if (error) {
+ dev_err(&client->dev, "Failed to write reset command\n");
+ return error;
+ }
+
+ error = zinitix_write_u16(client, BT541_INT_ENABLE_FLAG, 0x0);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to reset interrupt enable flag\n");
+ return error;
+ }
+
+ /* initialize */
+ error = zinitix_write_u16(client, BT541_X_RESOLUTION,
+ bt541->prop.max_x);
+ if (error)
+ return error;
+
+ error = zinitix_write_u16(client, BT541_Y_RESOLUTION,
+ bt541->prop.max_y);
+ if (error)
+ return error;
+
+ error = zinitix_write_u16(client, BT541_SUPPORTED_FINGER_NUM,
+ MAX_SUPPORTED_FINGER_NUM);
+ if (error)
+ return error;
+
+ error = zinitix_write_u16(client, BT541_INITIAL_TOUCH_MODE,
+ bt541->zinitix_mode);
+ if (error)
+ return error;
+
+ error = zinitix_write_u16(client, BT541_TOUCH_MODE,
+ bt541->zinitix_mode);
+ if (error)
+ return error;
+
+ error = zinitix_write_u16(client, BT541_INT_ENABLE_FLAG,
+ BIT_PT_CNT_CHANGE | BIT_DOWN | BIT_MOVE |
+ BIT_UP);
+ if (error)
+ return error;
+
+ /* clear queue */
+ for (i = 0; i < 10; i++) {
+ zinitix_write_cmd(client, BT541_CLEAR_INT_STATUS_CMD);
+ udelay(10);
+ }
+
+ return 0;
+}
+
+static int zinitix_init_regulators(struct bt541_ts_data *bt541)
+{
+ struct i2c_client *client = bt541->client;
+ int error;
+
+ bt541->supplies[0].supply = "vdd";
+ bt541->supplies[1].supply = "vddo";
+ error = devm_regulator_bulk_get(&client->dev,
+ ARRAY_SIZE(bt541->supplies),
+ bt541->supplies);
+ if (error < 0) {
+ dev_err(&client->dev, "Failed to get regulators: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_send_power_on_sequence(struct bt541_ts_data *bt541)
+{
+ int error;
+ struct i2c_client *client = bt541->client;
+
+ error = zinitix_write_u16(client, 0xc000, 0x0001);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to send power sequence(vendor cmd enable)\n");
+ return error;
+ }
+ udelay(10);
+
+ error = zinitix_write_cmd(client, 0xc004);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to send power sequence (intn clear)\n");
+ return error;
+ }
+ udelay(10);
+
+ error = zinitix_write_u16(client, 0xc002, 0x0001);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to send power sequence (nvm init)\n");
+ return error;
+ }
+ mdelay(2);
+
+ error = zinitix_write_u16(client, 0xc001, 0x0001);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to send power sequence (program start)\n");
+ return error;
+ }
+ msleep(FIRMWARE_ON_DELAY);
+
+ return 0;
+}
+
+static void zinitix_report_finger(struct bt541_ts_data *bt541, int slot,
+ const struct point_coord *p)
+{
+ input_mt_slot(bt541->input_dev, slot);
+ input_mt_report_slot_state(bt541->input_dev, MT_TOOL_FINGER, true);
+ touchscreen_report_pos(bt541->input_dev, &bt541->prop,
+ le16_to_cpu(p->x), le16_to_cpu(p->y), true);
+ input_report_abs(bt541->input_dev, ABS_MT_TOUCH_MAJOR, p->width);
+}
+
+static irqreturn_t zinitix_ts_irq_handler(int irq, void *bt541_handler)
+{
+ struct bt541_ts_data *bt541 = bt541_handler;
+ struct i2c_client *client = bt541->client;
+ struct touch_event touch_event;
+ int error;
+ int i;
+
+ memset(&touch_event, 0, sizeof(struct touch_event));
+
+ error = zinitix_read_data(bt541->client, BT541_POINT_STATUS_REG,
+ &touch_event, sizeof(struct touch_event));
+ if (error) {
+ dev_err(&client->dev, "Failed to read in touchpoint struct\n");
+ goto out;
+ }
+
+ for (i = 0; i < MAX_SUPPORTED_FINGER_NUM; i++)
+ if (touch_event.point_coord[i].sub_status & SUB_BIT_EXIST)
+ zinitix_report_finger(bt541, i,
+ &touch_event.point_coord[i]);
+
+ input_mt_sync_frame(bt541->input_dev);
+ input_sync(bt541->input_dev);
+
+out:
+ zinitix_write_cmd(bt541->client, BT541_CLEAR_INT_STATUS_CMD);
+ return IRQ_HANDLED;
+}
+
+static int zinitix_start(struct bt541_ts_data *bt541)
+{
+ int error;
+
+ error = regulator_bulk_enable(ARRAY_SIZE(bt541->supplies),
+ bt541->supplies);
+ if (error) {
+ dev_err(&bt541->client->dev,
+ "Failed to enable regulators: %d\n", error);
+ return error;
+ }
+
+ msleep(CHIP_ON_DELAY);
+
+ error = zinitix_send_power_on_sequence(bt541);
+ if (error) {
+ dev_err(&bt541->client->dev,
+ "Error while sending power-on sequence: %d\n", error);
+ return error;
+ }
+
+ error = zinitix_init_touch(bt541);
+ if (error) {
+ dev_err(&bt541->client->dev,
+ "Error while configuring touch IC\n");
+ return error;
+ }
+
+ enable_irq(bt541->client->irq);
+
+ return 0;
+}
+
+static int zinitix_stop(struct bt541_ts_data *bt541)
+{
+ int error;
+
+ disable_irq(bt541->client->irq);
+
+ error = regulator_bulk_disable(ARRAY_SIZE(bt541->supplies),
+ bt541->supplies);
+ if (error) {
+ dev_err(&bt541->client->dev,
+ "Failed to disable regulators: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_input_open(struct input_dev *dev)
+{
+ struct bt541_ts_data *bt541 = input_get_drvdata(dev);
+
+ return zinitix_start(bt541);
+}
+
+static void zinitix_input_close(struct input_dev *dev)
+{
+ struct bt541_ts_data *bt541 = input_get_drvdata(dev);
+
+ zinitix_stop(bt541);
+}
+
+static int zinitix_init_input_dev(struct bt541_ts_data *bt541)
+{
+ struct input_dev *input_dev;
+ int error;
+
+ input_dev = devm_input_allocate_device(&bt541->client->dev);
+ if (!input_dev) {
+ dev_err(&bt541->client->dev,
+ "Failed to allocate input device.");
+ return -ENOMEM;
+ }
+
+ input_set_drvdata(input_dev, bt541);
+ bt541->input_dev = input_dev;
+
+ input_dev->name = "Zinitix Capacitive TouchScreen";
+ input_dev->phys = "input/ts";
+ input_dev->id.bustype = BUS_I2C;
+ input_dev->open = zinitix_input_open;
+ input_dev->close = zinitix_input_close;
+
+ input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X);
+ input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y);
+ input_set_abs_params(input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
+
+ touchscreen_parse_properties(input_dev, true, &bt541->prop);
+ if (!bt541->prop.max_x || !bt541->prop.max_y) {
+ dev_err(&bt541->client->dev,
+ "Touchscreen-size-x and/or touchscreen-size-y not set in dts\n");
+ return -EINVAL;
+ }
+
+ error = input_mt_init_slots(input_dev, MAX_SUPPORTED_FINGER_NUM,
+ INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
+ if (error) {
+ dev_err(&bt541->client->dev,
+ "Failed to initialize MT slots: %d", error);
+ return error;
+ }
+
+ error = input_register_device(input_dev);
+ if (error) {
+ dev_err(&bt541->client->dev,
+ "Failed to register input device: %d", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_ts_probe(struct i2c_client *client)
+{
+ struct bt541_ts_data *bt541;
+ int error;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ dev_err(&client->dev,
+ "Failed to assert adapter's support for plain I2C.\n");
+ return -ENXIO;
+ }
+
+ bt541 = devm_kzalloc(&client->dev, sizeof(*bt541), GFP_KERNEL);
+ if (!bt541)
+ return -ENOMEM;
+
+ bt541->client = client;
+ i2c_set_clientdata(client, bt541);
+
+ error = zinitix_init_regulators(bt541);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to initialize regulators: %d\n", error);
+ return error;
+ }
+
+ error = zinitix_init_input_dev(bt541);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to initialize input device: %d\n", error);
+ return error;
+ }
+
+ error = device_property_read_u32(&client->dev, "zinitix,mode",
+ &bt541->zinitix_mode);
+ if (error < 0) {
+ /* fall back to mode 2 */
+ bt541->zinitix_mode = DEFAULT_TOUCH_POINT_MODE;
+ }
+
+ if (bt541->zinitix_mode != 2) {
+ /*
+ * If there are devices that don't support mode 2, support
+ * for other modes (0, 1) will be needed.
+ */
+ dev_err(&client->dev,
+ "Malformed zinitix,mode property, must be 2 (supplied: %d)\n",
+ bt541->zinitix_mode);
+ return -EINVAL;
+ }
+
+ irq_set_status_flags(client->irq, IRQ_NOAUTOEN);
+ error = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, zinitix_ts_irq_handler,
+ IRQF_ONESHOT, client->name, bt541);
+ if (error) {
+ dev_err(&client->dev, "Failed to request IRQ: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int __maybe_unused zinitix_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct bt541_ts_data *bt541 = i2c_get_clientdata(client);
+
+ mutex_lock(&bt541->input_dev->mutex);
+
+ if (bt541->input_dev->users)
+ zinitix_stop(bt541);
+
+ mutex_unlock(&bt541->input_dev->mutex);
+
+ return 0;
+}
+
+static int __maybe_unused zinitix_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct bt541_ts_data *bt541 = i2c_get_clientdata(client);
+ int ret = 0;
+
+ mutex_lock(&bt541->input_dev->mutex);
+
+ if (bt541->input_dev->users)
+ ret = zinitix_start(bt541);
+
+ mutex_unlock(&bt541->input_dev->mutex);
+
+ return ret;
+}
+
+static SIMPLE_DEV_PM_OPS(zinitix_pm_ops, zinitix_suspend, zinitix_resume);
+
+#ifdef CONFIG_OF
+static const struct of_device_id zinitix_of_match[] = {
+ { .compatible = "zinitix,bt541" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, zinitix_of_match);
+#endif
+
+static struct i2c_driver zinitix_ts_driver = {
+ .probe_new = zinitix_ts_probe,
+ .driver = {
+ .name = "Zinitix-TS",
+ .pm = &zinitix_pm_ops,
+ .of_match_table = of_match_ptr(zinitix_of_match),
+ },
+};
+module_i2c_driver(zinitix_ts_driver);
+
+MODULE_AUTHOR("Michael Srba <Michael.Srba@seznam.cz>");
+MODULE_DESCRIPTION("Zinitix touchscreen driver");
+MODULE_LICENSE("GPL v2");
TP_ACPI_HOTKEYSCAN_CALCULATOR,
TP_ACPI_HOTKEYSCAN_BLUETOOTH,
TP_ACPI_HOTKEYSCAN_KEYBOARD,
+ TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */
+ TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER,
+ TP_ACPI_HOTKEYSCAN_PICKUP_PHONE,
+ TP_ACPI_HOTKEYSCAN_HANGUP_PHONE,
/* Hotkey keymap size */
TPACPI_HOTKEY_MAP_LEN
KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
KEY_UNKNOWN,
- KEY_BOOKMARKS, /* Favorite app, 0x311 */
- KEY_RESERVED, /* Clipping tool */
- KEY_CALC, /* Calculator (above numpad, P52) */
- KEY_BLUETOOTH, /* Bluetooth */
- KEY_KEYBOARD /* Keyboard, 0x315 */
+ KEY_BOOKMARKS, /* Favorite app, 0x311 */
+ KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */
+ KEY_CALC, /* Calculator (above numpad, P52) */
+ KEY_BLUETOOTH, /* Bluetooth */
+ KEY_KEYBOARD, /* Keyboard, 0x315 */
+ KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */
+ KEY_NOTIFICATION_CENTER, /* Notification Center */
+ KEY_PICKUP_PHONE, /* Answer incoming call */
+ KEY_HANGUP_PHONE, /* Decline incoming call */
},
};
};
/**
- * struct rmi_f30_data - overrides defaults for a single F30 GPIOs/LED chip.
+ * struct rmi_gpio_data - overrides defaults for a single F30/F3A GPIOs/LED
+ * chip.
* @buttonpad - the touchpad is a buttonpad, so enable only the first actual
* button that is found.
- * @trackstick_buttons - Set when the function 30 is handling the physical
+ * @trackstick_buttons - Set when the function 30 or 3a is handling the physical
* buttons of the trackstick (as a PS/2 passthrough device).
- * @disable - the touchpad incorrectly reports F30 and it should be ignored.
+ * @disable - the touchpad incorrectly reports F30/F3A and it should be ignored.
* This is a special case which is due to misconfigured firmware.
*/
-struct rmi_f30_data {
+struct rmi_gpio_data {
bool buttonpad;
bool trackstick_buttons;
bool disable;
/* function handler pdata */
struct rmi_2d_sensor_platform_data sensor_pdata;
struct rmi_f01_power_management power_management;
- struct rmi_f30_data f30_data;
+ struct rmi_gpio_data gpio_data;
};
/**
#define KEY_10CHANNELSUP 0x1b8 /* 10 channels up (10+) */
#define KEY_10CHANNELSDOWN 0x1b9 /* 10 channels down (10-) */
#define KEY_IMAGES 0x1ba /* AL Image Browser */
+#define KEY_NOTIFICATION_CENTER 0x1bc /* Show/hide the notification center */
+#define KEY_PICKUP_PHONE 0x1bd /* Answer incoming call */
+#define KEY_HANGUP_PHONE 0x1be /* Decline incoming call */
#define KEY_DEL_EOL 0x1c0
#define KEY_DEL_EOS 0x1c1
#define KEY_FN_F 0x1e2
#define KEY_FN_S 0x1e3
#define KEY_FN_B 0x1e4
+#define KEY_FN_RIGHT_SHIFT 0x1e5
#define KEY_BRL_DOT1 0x1f1
#define KEY_BRL_DOT2 0x1f2
projects / linux-block.git / commitdiff