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

[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
......@@ -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
......@@ -429,13 +533,281 @@ u8 at91_leds_timer;
void __init at91_init_leds(u8 cpu_led, u8 timer_led)
{
at91_leds_cpu = cpu_led;
at91_leds_timer = 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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