AT91: atmel-mci: Platform configuration to the the atmel-mci driver
authorRob Emanuele <rob@emanuele.us>
Tue, 22 Sep 2009 23:45:22 +0000 (16:45 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 23 Sep 2009 14:39:37 +0000 (07:39 -0700)
Created a modified version of the at91sam9g20 evaluation kit platform
(board-sam9g20ek-2slot-mmc.c) and device support to make use of the
updated atmel-mci driver.

As the use of two slots modify GPIO pin allocation, we create another
board file.

This requires getting the most updated arch/arm/tools/mach-types from
http://www.arm.linux.org.uk/developer/machines/download.php to have the machine
type for the at91sam9g20ek-2slot-mmc board.

[nicolas.ferre@atmel.com: printk, slot_count modification in at91sam9260_devices.c file]
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Rob Emanuele <rob@emanuele.us>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/arm/mach-at91/Kconfig
arch/arm/mach-at91/Makefile
arch/arm/mach-at91/at91sam9260_devices.c
arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c [new file with mode: 0644]
arch/arm/mach-at91/include/mach/board.h

index a24d824c428b3cf1e3aa45c31a7f53f8bb9a7d2d..e35d54d43e709d52a3d025165c17cee01da8fc69 100644 (file)
@@ -289,6 +289,13 @@ config MACH_NEOCORE926
        help
          Select this if you are using the Adeneo Neocore 926 board.
 
+config MACH_AT91SAM9G20EK_2MMC
+       bool "Atmel AT91SAM9G20-EK Evaluation Kit modified for 2 MMC Slots"
+       depends on ARCH_AT91SAM9G20
+       help
+         Select this if you are using an Atmel AT91SAM9G20-EK Evaluation Kit
+         Rev A or B modified for 2 MMC Slots.
+
 endif
 
 # ----------------------------------------------------------
index a6ed015d82edc9822f92a57a72ead4cf22760095..ada440aab0c5ab2a7597733ac529e26aea5c0c32 100644 (file)
@@ -59,6 +59,7 @@ obj-$(CONFIG_MACH_AT91SAM9RLEK)       += board-sam9rlek.o
 
 # AT91SAM9G20 board-specific support
 obj-$(CONFIG_MACH_AT91SAM9G20EK) += board-sam9g20ek.o
+obj-$(CONFIG_MACH_AT91SAM9G20EK_2MMC) += board-sam9g20ek-2slot-mmc.o
 obj-$(CONFIG_MACH_CPU9G20)     += board-cpu9krea.o
 
 # AT91SAM9G45 board-specific support
index ee4ea0e720cf14239dedbece059d24c9c20c0f54..07eb7b07e442a69c9499b71cf49387f6ecd240e6 100644 (file)
@@ -278,6 +278,102 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
 #endif
 
+/* --------------------------------------------------------------------
+ *  MMC / SD Slot for Atmel MCI Driver
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
+static u64 mmc_dmamask = DMA_BIT_MASK(32);
+static struct mci_platform_data mmc_data;
+
+static struct resource mmc_resources[] = {
+       [0] = {
+               .start  = AT91SAM9260_BASE_MCI,
+               .end    = AT91SAM9260_BASE_MCI + SZ_16K - 1,
+               .flags  = IORESOURCE_MEM,
+       },
+       [1] = {
+               .start  = AT91SAM9260_ID_MCI,
+               .end    = AT91SAM9260_ID_MCI,
+               .flags  = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device at91sam9260_mmc_device = {
+       .name           = "atmel_mci",
+       .id             = -1,
+       .dev            = {
+                               .dma_mask               = &mmc_dmamask,
+                               .coherent_dma_mask      = DMA_BIT_MASK(32),
+                               .platform_data          = &mmc_data,
+       },
+       .resource       = mmc_resources,
+       .num_resources  = ARRAY_SIZE(mmc_resources),
+};
+
+void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data)
+{
+       unsigned int i;
+       unsigned int slot_count = 0;
+
+       if (!data)
+               return;
+
+       for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
+               if (data->slot[i].bus_width) {
+                       /* input/irq */
+                       if (data->slot[i].detect_pin) {
+                               at91_set_gpio_input(data->slot[i].detect_pin, 1);
+                               at91_set_deglitch(data->slot[i].detect_pin, 1);
+                       }
+                       if (data->slot[i].wp_pin)
+                               at91_set_gpio_input(data->slot[i].wp_pin, 1);
+
+                       switch (i) {
+                       case 0:
+                               /* CMD */
+                               at91_set_A_periph(AT91_PIN_PA7, 1);
+                               /* DAT0, maybe DAT1..DAT3 */
+                               at91_set_A_periph(AT91_PIN_PA6, 1);
+                               if (data->slot[i].bus_width == 4) {
+                                       at91_set_A_periph(AT91_PIN_PA9, 1);
+                                       at91_set_A_periph(AT91_PIN_PA10, 1);
+                                       at91_set_A_periph(AT91_PIN_PA11, 1);
+                               }
+                               slot_count++;
+                               break;
+                       case 1:
+                               /* CMD */
+                               at91_set_B_periph(AT91_PIN_PA1, 1);
+                               /* DAT0, maybe DAT1..DAT3 */
+                               at91_set_B_periph(AT91_PIN_PA0, 1);
+                               if (data->slot[i].bus_width == 4) {
+                                       at91_set_B_periph(AT91_PIN_PA5, 1);
+                                       at91_set_B_periph(AT91_PIN_PA4, 1);
+                                       at91_set_B_periph(AT91_PIN_PA3, 1);
+                               }
+                               slot_count++;
+                               break;
+                       default:
+                               printk(KERN_ERR
+                                       "AT91: SD/MMC slot %d not available\n", i);
+                               break;
+                       }
+               }
+       }
+
+       if (slot_count) {
+               /* CLK */
+               at91_set_A_periph(AT91_PIN_PA8, 0);
+
+               mmc_data = *data;
+               platform_device_register(&at91sam9260_mmc_device);
+       }
+}
+#else
+void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data) {}
+#endif
+
 
 /* --------------------------------------------------------------------
  *  NAND / SmartMedia
diff --git a/arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c b/arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c
new file mode 100644 (file)
index 0000000..a28e53f
--- /dev/null
@@ -0,0 +1,277 @@
+/*
+ *  Copyright (C) 2005 SAN People
+ *  Copyright (C) 2008 Atmel
+ *  Copyright (C) 2009 Rob Emanuele
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/at73c213.h>
+#include <linux/clk.h>
+
+#include <mach/hardware.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/board.h>
+#include <mach/gpio.h>
+#include <mach/at91sam9_smc.h>
+
+#include "sam9_smc.h"
+#include "generic.h"
+
+
+static void __init ek_map_io(void)
+{
+       /* Initialize processor: 18.432 MHz crystal */
+       at91sam9260_initialize(18432000);
+
+       /* DGBU on ttyS0. (Rx & Tx only) */
+       at91_register_uart(0, 0, 0);
+
+       /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
+       at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
+                          | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
+                          | ATMEL_UART_RI);
+
+       /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
+       at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
+
+       /* set serial console to ttyS0 (ie, DBGU) */
+       at91_set_serial_console(0);
+}
+
+static void __init ek_init_irq(void)
+{
+       at91sam9260_init_interrupts(NULL);
+}
+
+
+/*
+ * USB Host port
+ */
+static struct at91_usbh_data __initdata ek_usbh_data = {
+       .ports          = 2,
+};
+
+/*
+ * USB Device port
+ */
+static struct at91_udc_data __initdata ek_udc_data = {
+       .vbus_pin       = AT91_PIN_PC5,
+       .pullup_pin     = 0,            /* pull-up driven by UDC */
+};
+
+
+/*
+ * SPI devices.
+ */
+static struct spi_board_info ek_spi_devices[] = {
+#if !defined(CONFIG_MMC_ATMELMCI)
+       {       /* DataFlash chip */
+               .modalias       = "mtd_dataflash",
+               .chip_select    = 1,
+               .max_speed_hz   = 15 * 1000 * 1000,
+               .bus_num        = 0,
+       },
+#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
+       {       /* DataFlash card */
+               .modalias       = "mtd_dataflash",
+               .chip_select    = 0,
+               .max_speed_hz   = 15 * 1000 * 1000,
+               .bus_num        = 0,
+       },
+#endif
+#endif
+};
+
+
+/*
+ * MACB Ethernet device
+ */
+static struct at91_eth_data __initdata ek_macb_data = {
+       .phy_irq_pin    = AT91_PIN_PC12,
+       .is_rmii        = 1,
+};
+
+
+/*
+ * NAND flash
+ */
+static struct mtd_partition __initdata ek_nand_partition[] = {
+       {
+               .name   = "Bootstrap",
+               .offset = 0,
+               .size   = 4 * SZ_1M,
+       },
+       {
+               .name   = "Partition 1",
+               .offset = MTDPART_OFS_NXTBLK,
+               .size   = 60 * SZ_1M,
+       },
+       {
+               .name   = "Partition 2",
+               .offset = MTDPART_OFS_NXTBLK,
+               .size   = MTDPART_SIZ_FULL,
+       },
+};
+
+static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
+{
+       *num_partitions = ARRAY_SIZE(ek_nand_partition);
+       return ek_nand_partition;
+}
+
+/* det_pin is not connected */
+static struct atmel_nand_data __initdata ek_nand_data = {
+       .ale            = 21,
+       .cle            = 22,
+       .rdy_pin        = AT91_PIN_PC13,
+       .enable_pin     = AT91_PIN_PC14,
+       .partition_info = nand_partitions,
+#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
+       .bus_width_16   = 1,
+#else
+       .bus_width_16   = 0,
+#endif
+};
+
+static struct sam9_smc_config __initdata ek_nand_smc_config = {
+       .ncs_read_setup         = 0,
+       .nrd_setup              = 2,
+       .ncs_write_setup        = 0,
+       .nwe_setup              = 2,
+
+       .ncs_read_pulse         = 4,
+       .nrd_pulse              = 4,
+       .ncs_write_pulse        = 4,
+       .nwe_pulse              = 4,
+
+       .read_cycle             = 7,
+       .write_cycle            = 7,
+
+       .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
+       .tdf_cycles             = 3,
+};
+
+static void __init ek_add_device_nand(void)
+{
+       /* setup bus-width (8 or 16) */
+       if (ek_nand_data.bus_width_16)
+               ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
+       else
+               ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
+
+       /* configure chip-select 3 (NAND) */
+       sam9_smc_configure(3, &ek_nand_smc_config);
+
+       at91_add_device_nand(&ek_nand_data);
+}
+
+
+/*
+ * MCI (SD/MMC)
+ * det_pin and wp_pin are not connected
+ */
+#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
+static struct mci_platform_data __initdata ek_mmc_data = {
+       .slot[0] = {
+               .bus_width      = 4,
+               .detect_pin     = -ENODEV,
+               .wp_pin         = -ENODEV,
+       },
+       .slot[1] = {
+               .bus_width      = 4,
+               .detect_pin     = -ENODEV,
+               .wp_pin         = -ENODEV,
+       },
+
+};
+#else
+static struct amci_platform_data __initdata ek_mmc_data = {
+};
+#endif
+
+/*
+ * LEDs
+ */
+static struct gpio_led ek_leds[] = {
+       {       /* "bottom" led, green, userled1 to be defined */
+               .name                   = "ds5",
+               .gpio                   = AT91_PIN_PB12,
+               .active_low             = 1,
+               .default_trigger        = "none",
+       },
+       {       /* "power" led, yellow */
+               .name                   = "ds1",
+               .gpio                   = AT91_PIN_PB13,
+               .default_trigger        = "heartbeat",
+       }
+};
+
+static struct i2c_board_info __initdata ek_i2c_devices[] = {
+       {
+               I2C_BOARD_INFO("24c512", 0x50),
+       },
+};
+
+
+static void __init ek_board_init(void)
+{
+       /* Serial */
+       at91_add_device_serial();
+       /* USB Host */
+       at91_add_device_usbh(&ek_usbh_data);
+       /* USB Device */
+       at91_add_device_udc(&ek_udc_data);
+       /* SPI */
+       at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
+       /* NAND */
+       ek_add_device_nand();
+       /* Ethernet */
+       at91_add_device_eth(&ek_macb_data);
+       /* MMC */
+       at91_add_device_mci(0, &ek_mmc_data);
+       /* I2C */
+       at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
+       /* LEDs */
+       at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
+       /* PCK0 provides MCLK to the WM8731 */
+       at91_set_B_periph(AT91_PIN_PC1, 0);
+       /* SSC (for WM8731) */
+       at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
+}
+
+MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
+       /* Maintainer: Rob Emanuele */
+       .phys_io        = AT91_BASE_SYS,
+       .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
+       .boot_params    = AT91_SDRAM_BASE + 0x100,
+       .timer          = &at91sam926x_timer,
+       .map_io         = ek_map_io,
+       .init_irq       = ek_init_irq,
+       .init_machine   = ek_board_init,
+MACHINE_END
index 13f27a4b882d10aef10df715f8f846dd06920d4d..583f38a38df708862c8cada64d743ed2c6dd4959 100644 (file)
@@ -37,6 +37,7 @@
 #include <linux/leds.h>
 #include <linux/spi/spi.h>
 #include <linux/usb/atmel_usba_udc.h>
+#include <linux/atmel-mci.h>
 #include <sound/atmel-ac97c.h>
 
  /* USB Device */
@@ -64,6 +65,7 @@ struct at91_cf_data {
 extern void __init at91_add_device_cf(struct at91_cf_data *data);
 
  /* MMC / SD */
+  /* at91_mci platform config */
 struct at91_mmc_data {
        u8              det_pin;        /* card detect IRQ */
        unsigned        slot_b:1;       /* uses Slot B */
@@ -73,6 +75,9 @@ struct at91_mmc_data {
 };
 extern void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data);
 
+  /* atmel-mci platform config */
+extern void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data);
+
  /* Ethernet (EMAC & MACB) */
 struct at91_eth_data {
        u32             phy_mask;