Commit 2e836402 authored by Andrew Victor's avatar Andrew Victor Committed by Russell King
Browse files

[ARM] 3585/1: AT91RM9200 Platform devices 



Patch from Andrew Victor

This patch updates the platform device support for the AT91RM9200.

The changes include:

1. USB Host device renamed to "at91_ohci" since the driver is also
usable on the AT91SAM9261 processor.
2. Enabling multidrive on the USB Device's pullup pin should not be done
for all boards.  Moved into board-specific files.  [Patch from David
Brownell]
3. Move enabling of PCMCIA/Compact Flash pins out of the driver.
4. Added SPI device and resources.
5. Added Watchdog device and resources.  [Patch from David Brownell]
6. Added UART device and resources.
7. The simple devices (watchdog, rtc, i2c) are now automatically
registered and don't have to be registered separately in each
board-specific file. [Patch from David Brownell]

Signed-off-by: default avatarAndrew Victor <andrew@sanpeople.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 814138ff

arch/arm/mach-at91rm9200/devices.c

+389 −17
Original line number Diff line number Diff line
@@ -16,9 +16,15 @@ 
#include <linux/config.h>

#include <linux/platform_device.h>



#include <asm/arch/hardware.h>

#include <asm/arch/board.h>

#include <asm/arch/pio.h>

#include <asm/arch/gpio.h>



#include "generic.h"



#define SZ_512	0x00000200

#define SZ_256	0x00000100

#define SZ_16	0x00000010



/* --------------------------------------------------------------------

 *  USB Host
@@ -28,7 +34,7 @@ 
static u64 ohci_dmamask = 0xffffffffUL;

static struct at91_usbh_data usbh_data;



static struct resource at91_usbh_resource[] = {

static struct resource at91_usbh_resources[] = {

	[0] = {

		.start	= AT91_UHP_BASE,

		.end	= AT91_UHP_BASE + SZ_1M - 1,
@@ -42,15 +48,15 @@ static struct resource at91_usbh_resource[] = { 
};



static struct platform_device at91rm9200_usbh_device = {

	.name		= "at91rm9200-ohci",

	.name		= "at91_ohci",

	.id		= -1,

	.dev		= {

				.dma_mask		= &ohci_dmamask,

				.coherent_dma_mask	= 0xffffffff,

				.platform_data		= &usbh_data,

	},

	.resource	= at91_usbh_resource,

	.num_resources	= ARRAY_SIZE(at91_usbh_resource),

	.resource	= at91_usbh_resources,

	.num_resources	= ARRAY_SIZE(at91_usbh_resources),

};



void __init at91_add_device_usbh(struct at91_usbh_data *data)
@@ -74,11 +80,16 @@ void __init at91_add_device_usbh(struct at91_usbh_data *data) {} 
static struct at91_udc_data udc_data;



static struct resource at91_udc_resources[] = {

	{

	[0] = {

		.start	= AT91_BASE_UDP,

		.end	= AT91_BASE_UDP + SZ_16K - 1,

		.flags	= IORESOURCE_MEM,

	}

	},

	[1] = {

		.start	= AT91_ID_UDP,

		.end	= AT91_ID_UDP,

		.flags	= IORESOURCE_IRQ,

	},

};



static struct platform_device at91rm9200_udc_device = {
@@ -100,10 +111,8 @@ void __init at91_add_device_udc(struct at91_udc_data *data) 
		at91_set_gpio_input(data->vbus_pin, 0);

		at91_set_deglitch(data->vbus_pin, 1);

	}

	if (data->pullup_pin) {

	if (data->pullup_pin)

		at91_set_gpio_output(data->pullup_pin, 0);

		at91_set_multi_drive(data->pullup_pin, 1);

	}



	udc_data = *data;

	platform_device_register(&at91rm9200_udc_device);
@@ -197,7 +206,7 @@ static struct at91_cf_data cf_data; 
static struct resource at91_cf_resources[] = {

	[0] = {

		.start	= AT91_CF_BASE,

		/* ties up CS4, CS5, and CS6 */

		/* ties up CS4, CS5 and CS6 */

		.end	= AT91_CF_BASE + (0x30000000 - 1),

		.flags	= IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,

	},
@@ -231,6 +240,12 @@ void __init at91_add_device_cf(struct at91_cf_data *data) 
		at91_set_gpio_output(data->vcc_pin, 0);

	at91_set_gpio_output(data->rst_pin, 0);



	/* force poweron defaults for these pins ... */

	at91_set_A_periph(AT91_PIN_PC9, 0);	/* A25/CFRNW */

	at91_set_A_periph(AT91_PIN_PC10, 0);	/* NCS4/CFCS */

	at91_set_A_periph(AT91_PIN_PC11, 0);	/* NCS5/CFCE1 */

	at91_set_A_periph(AT91_PIN_PC12, 0);	/* NCS6/CFCE2 */



	cf_data = *data;

	platform_device_register(&at91rm9200_cf_device);

}
@@ -319,6 +334,7 @@ void __init at91_add_device_mmc(struct at91_mmc_data *data) 
void __init at91_add_device_mmc(struct at91_mmc_data *data) {}

#endif





/* --------------------------------------------------------------------

 *  NAND / SmartMedia

 * -------------------------------------------------------------------- */
@@ -399,23 +415,111 @@ void __init at91_add_device_i2c(void) {} 
#endif





/* --------------------------------------------------------------------

 *  SPI

 * -------------------------------------------------------------------- */



#if defined(CONFIG_SPI_AT91) || defined(CONFIG_SPI_AT91_MODULE) || defined(CONFIG_AT91_SPI) || defined(CONFIG_AT91_SPI_MODULE)

static u64 spi_dmamask = 0xffffffffUL;



static struct resource at91_spi_resources[] = {

	[0] = {

		.start	= AT91_BASE_SPI,

		.end	= AT91_BASE_SPI + SZ_16K - 1,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= AT91_ID_SPI,

		.end	= AT91_ID_SPI,

		.flags	= IORESOURCE_IRQ,

	},

};



static struct platform_device at91rm9200_spi_device = {

	.name		= "at91_spi",

	.id		= 0,

	.dev		= {

		.dma_mask		= &spi_dmamask,

		.coherent_dma_mask	= 0xffffffff,

	},

	.resource	= at91_spi_resources,

	.num_resources	= ARRAY_SIZE(at91_spi_resources),

};



static const unsigned at91_spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };



void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)

{

	int i;

	unsigned long cs_pin;



	at91_set_A_periph(AT91_PIN_PA0, 0);	/* MISO */

	at91_set_A_periph(AT91_PIN_PA1, 0);	/* MOSI */

	at91_set_A_periph(AT91_PIN_PA2, 0);	/* SPCK */



	/* Enable SPI chip-selects */

	for (i = 0; i < nr_devices; i++) {

		if (devices[i].controller_data)

			cs_pin = (unsigned long) devices[i].controller_data;

		else

			cs_pin = at91_spi_standard_cs[devices[i].chip_select];



#ifdef CONFIG_SPI_AT91_MANUAL_CS

		at91_set_gpio_output(cs_pin, 1);

#else

		at91_set_A_periph(cs_pin, 0);

#endif



		/* pass chip-select pin to driver */

		devices[i].controller_data = (void *) cs_pin;

	}



	spi_register_board_info(devices, nr_devices);

	at91_clock_associate("spi0_clk", &at91rm9200_spi_device.dev, "spi");

	platform_device_register(&at91rm9200_spi_device);

}

#else

void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}

#endif





/* --------------------------------------------------------------------

 *  RTC

 * -------------------------------------------------------------------- */



#if defined(CONFIG_AT91_RTC) || defined(CONFIG_AT91_RTC_MODULE)

#if defined(CONFIG_RTC_DRV_AT91) || defined(CONFIG_RTC_DRV_AT91_MODULE)

static struct platform_device at91rm9200_rtc_device = {

	.name		= "at91_rtc",

	.id		= -1,

	.num_resources	= 0,

};



void __init at91_add_device_rtc(void)

static void __init at91_add_device_rtc(void)

{

	platform_device_register(&at91rm9200_rtc_device);

}

#else

void __init at91_add_device_rtc(void) {}

static void __init at91_add_device_rtc(void) {}

#endif





/* --------------------------------------------------------------------

 *  Watchdog

 * -------------------------------------------------------------------- */



#if defined(CONFIG_AT91_WATCHDOG) || defined(CONFIG_AT91_WATCHDOG_MODULE)

static struct platform_device at91rm9200_wdt_device = {

	.name		= "at91_wdt",

	.id		= -1,

	.num_resources	= 0,

};



static void __init at91_add_device_watchdog(void)

{

	platform_device_register(&at91rm9200_wdt_device);

}

#else

static void __init at91_add_device_watchdog(void) {}

#endif
@@ -432,10 +536,278 @@ void __init at91_init_leds(u8 cpu_led, u8 timer_led) 
	at91_leds_cpu	= cpu_led;

	at91_leds_timer	= timer_led;

}



#else

void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}

#endif





/* --------------------------------------------------------------------

 *  UART

 * -------------------------------------------------------------------- */



#if defined(CONFIG_SERIAL_AT91)

static struct resource dbgu_resources[] = {

	[0] = {

		.start	= AT91_VA_BASE_SYS + AT91_DBGU,

		.end	= AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= AT91_ID_SYS,

		.end	= AT91_ID_SYS,

		.flags	= IORESOURCE_IRQ,

	},

};



static struct at91_uart_data dbgu_data = {

	.use_dma_tx	= 0,

	.use_dma_rx	= 0,		/* DBGU not capable of receive DMA */

};



static struct platform_device at91rm9200_dbgu_device = {

	.name		= "at91_usart",

	.id		= 0,

	.dev		= {

				.platform_data	= &dbgu_data,

				.coherent_dma_mask = 0xffffffff,

	},

	.resource	= dbgu_resources,

	.num_resources	= ARRAY_SIZE(dbgu_resources),

};



static inline void configure_dbgu_pins(void)

{

	at91_set_A_periph(AT91_PIN_PA30, 0);		/* DRXD */

	at91_set_A_periph(AT91_PIN_PA31, 1);		/* DTXD */

}



static struct resource uart0_resources[] = {

	[0] = {

		.start	= AT91_BASE_US0,

		.end	= AT91_BASE_US0 + SZ_16K - 1,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= AT91_ID_US0,

		.end	= AT91_ID_US0,

		.flags	= IORESOURCE_IRQ,

	},

};



static struct at91_uart_data uart0_data = {

	.use_dma_tx	= 1,

	.use_dma_rx	= 1,

};



static struct platform_device at91rm9200_uart0_device = {

	.name		= "at91_usart",

	.id		= 1,

	.dev		= {

				.platform_data	= &uart0_data,

				.coherent_dma_mask = 0xffffffff,

	},

	.resource	= uart0_resources,

	.num_resources	= ARRAY_SIZE(uart0_resources),

};



static inline void configure_usart0_pins(void)

{

	at91_set_A_periph(AT91_PIN_PA17, 1);		/* TXD0 */

	at91_set_A_periph(AT91_PIN_PA18, 0);		/* RXD0 */

	at91_set_A_periph(AT91_PIN_PA20, 0);		/* CTS0 */



	/*

	 * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.

	 *  We need to drive the pin manually.  Default is off (RTS is active low).

	 */

	at91_set_gpio_output(AT91_PIN_PA21, 1);

}



static struct resource uart1_resources[] = {

	[0] = {

		.start	= AT91_BASE_US1,

		.end	= AT91_BASE_US1 + SZ_16K - 1,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= AT91_ID_US1,

		.end	= AT91_ID_US1,

		.flags	= IORESOURCE_IRQ,

	},

};



static struct at91_uart_data uart1_data = {

	.use_dma_tx	= 1,

	.use_dma_rx	= 1,

};



static struct platform_device at91rm9200_uart1_device = {

	.name		= "at91_usart",

	.id		= 2,

	.dev		= {

				.platform_data	= &uart1_data,

				.coherent_dma_mask = 0xffffffff,

	},

	.resource	= uart1_resources,

	.num_resources	= ARRAY_SIZE(uart1_resources),

};



static inline void configure_usart1_pins(void)

{

	at91_set_A_periph(AT91_PIN_PB18, 0);		/* RI1 */

	at91_set_A_periph(AT91_PIN_PB19, 0);		/* DTR1 */

	at91_set_A_periph(AT91_PIN_PB20, 1);		/* TXD1 */

	at91_set_A_periph(AT91_PIN_PB21, 0);		/* RXD1 */

	at91_set_A_periph(AT91_PIN_PB23, 0);		/* DCD1 */

	at91_set_A_periph(AT91_PIN_PB24, 0);		/* CTS1 */

	at91_set_A_periph(AT91_PIN_PB25, 0);		/* DSR1 */

	at91_set_A_periph(AT91_PIN_PB26, 0);		/* RTS1 */

}



static struct resource uart2_resources[] = {

	[0] = {

		.start	= AT91_BASE_US2,

		.end	= AT91_BASE_US2 + SZ_16K - 1,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= AT91_ID_US2,

		.end	= AT91_ID_US2,

		.flags	= IORESOURCE_IRQ,

	},

};



static struct at91_uart_data uart2_data = {

	.use_dma_tx	= 1,

	.use_dma_rx	= 1,

};



static struct platform_device at91rm9200_uart2_device = {

	.name		= "at91_usart",

	.id		= 3,

	.dev		= {

				.platform_data	= &uart2_data,

				.coherent_dma_mask = 0xffffffff,

	},

	.resource	= uart2_resources,

	.num_resources	= ARRAY_SIZE(uart2_resources),

};



static inline void configure_usart2_pins(void)

{

	at91_set_A_periph(AT91_PIN_PA22, 0);		/* RXD2 */

	at91_set_A_periph(AT91_PIN_PA23, 1);		/* TXD2 */

}



static struct resource uart3_resources[] = {

	[0] = {

		.start	= AT91_BASE_US3,

		.end	= AT91_BASE_US3 + SZ_16K - 1,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= AT91_ID_US3,

		.end	= AT91_ID_US3,

		.flags	= IORESOURCE_IRQ,

	},

};



static struct at91_uart_data uart3_data = {

	.use_dma_tx	= 1,

	.use_dma_rx	= 1,

};



static struct platform_device at91rm9200_uart3_device = {

	.name		= "at91_usart",

	.id		= 4,

	.dev		= {

				.platform_data	= &uart3_data,

				.coherent_dma_mask = 0xffffffff,

	},

	.resource	= uart3_resources,

	.num_resources	= ARRAY_SIZE(uart3_resources),

};



static inline void configure_usart3_pins(void)

{

	at91_set_B_periph(AT91_PIN_PA5, 1);		/* TXD3 */

	at91_set_B_periph(AT91_PIN_PA6, 0);		/* RXD3 */

}



struct platform_device *at91_uarts[AT91_NR_UART];	/* the UARTs to use */

struct platform_device *at91_default_console_device;	/* the serial console device */



void __init at91_init_serial(struct at91_uart_config *config)

{

	int i;



	/* Fill in list of supported UARTs */

	for (i = 0; i < config->nr_tty; i++) {

		switch (config->tty_map[i]) {

			case 0:

				configure_usart0_pins();

				at91_uarts[i] = &at91rm9200_uart0_device;

				at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");

				break;

			case 1:

				configure_usart1_pins();

				at91_uarts[i] = &at91rm9200_uart1_device;

				at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");

				break;

			case 2:

				configure_usart2_pins();

				at91_uarts[i] = &at91rm9200_uart2_device;

				at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");

				break;

			case 3:

				configure_usart3_pins();

				at91_uarts[i] = &at91rm9200_uart3_device;

				at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");

				break;

			case 4:

				configure_dbgu_pins();

				at91_uarts[i] = &at91rm9200_dbgu_device;

				at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");

				break;

			default:

				continue;

		}

		at91_uarts[i]->id = i;		/* update ID number to mapped ID */

	}



	/* Set serial console device */

	if (config->console_tty < AT91_NR_UART)

		at91_default_console_device = at91_uarts[config->console_tty];

	if (!at91_default_console_device)

		printk(KERN_INFO "AT91: No default serial console defined.\n");

}



void __init at91_add_device_serial(void)

{

	int i;



	for (i = 0; i < AT91_NR_UART; i++) {

		if (at91_uarts[i])

			platform_device_register(at91_uarts[i]);

	}

}

#else

void __init at91_init_serial(struct at91_uart_config *config) {}

void __init at91_add_device_serial(void) {}

#endif





/* -------------------------------------------------------------------- */



/*

 * These devices are always present and don't need any board-specific

 * setup.

 */

static int __init at91_add_standard_devices(void)

{

	at91_add_device_rtc();

	at91_add_device_watchdog();

	return 0;

}



arch_initcall(at91_add_standard_devices);

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