Commit 864f38eb authored by Rob Emanuele's avatar Rob Emanuele Committed by Linus Torvalds
Browse files

AT91: atmel-mci: Platform configuration to the the atmel-mci driver 

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: default avatarRob Emanuele <rob@emanuele.us>
Signed-off-by: default avatarNicolas 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 04d699c3

arch/arm/mach-at91/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -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



# ----------------------------------------------------------

arch/arm/mach-at91/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/arm/mach-at91/at91sam9260_devices.c

+96 −0
Original line number Diff line number Diff line
@@ -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

arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c

0 → 100644
+277 −0
Original line number Diff line number Diff line 
/*

 *  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

arch/arm/mach-at91/include/mach/board.h

+5 −0
Original line number Diff line number Diff line
@@ -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;

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