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linux/arch/arm/mach-at91/at91rm9200_devices.c
Andrew Victor 9d0412680e [ARM] 4124/1: Rename mach-at91rm9200 and arch-at91rm9200 directories 
Now that Linux includes support for the Atmel AT91SAM9260 and
AT91SAM9261 processors in addition to the original Atmel AT91RM9200
(with support for more AT91 processors pending), the "mach-at91rm9200"
and "arch-at91rm9200" directories should be renamed to indicate their
more generic nature.

The following git commands should be run BEFORE applying this patch:
  git-mv arch/arm/mach-at91rm9200 arch/arm/mach-at91
  git-mv include/asm-arm/arch-at91rm9200 include/asm-arm/arch-at91

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-08 14:50:56 +00:00

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/*
* arch/arm/mach-at91/at91rm9200_devices.c
*
* Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
* Copyright (C) 2005 David Brownell
*
* 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.
*
*/
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <linux/platform_device.h>
#include <asm/arch/board.h>
#include <asm/arch/gpio.h>
#include <asm/arch/at91rm9200.h>
#include <asm/arch/at91rm9200_mc.h>
#include "generic.h"
#define SZ_512 0x00000200
#define SZ_256 0x00000100
#define SZ_16 0x00000010
/* --------------------------------------------------------------------
* USB Host
* -------------------------------------------------------------------- */
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static u64 ohci_dmamask = 0xffffffffUL;
static struct at91_usbh_data usbh_data;
static struct resource usbh_resources[] = {
[0] = {
.start = AT91RM9200_UHP_BASE,
.end = AT91RM9200_UHP_BASE + SZ_1M - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_UHP,
.end = AT91RM9200_ID_UHP,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_usbh_device = {
.name = "at91_ohci",
.id = -1,
.dev = {
.dma_mask = &ohci_dmamask,
.coherent_dma_mask = 0xffffffff,
.platform_data = &usbh_data,
},
.resource = usbh_resources,
.num_resources = ARRAY_SIZE(usbh_resources),
};
void __init at91_add_device_usbh(struct at91_usbh_data *data)
{
if (!data)
return;
usbh_data = *data;
platform_device_register(&at91rm9200_usbh_device);
}
#else
void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
#endif
/* --------------------------------------------------------------------
* USB Device (Gadget)
* -------------------------------------------------------------------- */
#ifdef CONFIG_USB_GADGET_AT91
static struct at91_udc_data udc_data;
static struct resource udc_resources[] = {
[0] = {
.start = AT91RM9200_BASE_UDP,
.end = AT91RM9200_BASE_UDP + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_UDP,
.end = AT91RM9200_ID_UDP,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_udc_device = {
.name = "at91_udc",
.id = -1,
.dev = {
.platform_data = &udc_data,
},
.resource = udc_resources,
.num_resources = ARRAY_SIZE(udc_resources),
};
void __init at91_add_device_udc(struct at91_udc_data *data)
{
if (!data)
return;
if (data->vbus_pin) {
at91_set_gpio_input(data->vbus_pin, 0);
at91_set_deglitch(data->vbus_pin, 1);
}
if (data->pullup_pin)
at91_set_gpio_output(data->pullup_pin, 0);
udc_data = *data;
platform_device_register(&at91rm9200_udc_device);
}
#else
void __init at91_add_device_udc(struct at91_udc_data *data) {}
#endif
/* --------------------------------------------------------------------
* Ethernet
* -------------------------------------------------------------------- */
#if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
static u64 eth_dmamask = 0xffffffffUL;
static struct at91_eth_data eth_data;
static struct resource eth_resources[] = {
[0] = {
.start = AT91_VA_BASE_EMAC,
.end = AT91_VA_BASE_EMAC + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_EMAC,
.end = AT91RM9200_ID_EMAC,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_eth_device = {
.name = "at91_ether",
.id = -1,
.dev = {
.dma_mask = &eth_dmamask,
.coherent_dma_mask = 0xffffffff,
.platform_data = &eth_data,
},
.resource = eth_resources,
.num_resources = ARRAY_SIZE(eth_resources),
};
void __init at91_add_device_eth(struct at91_eth_data *data)
{
if (!data)
return;
if (data->phy_irq_pin) {
at91_set_gpio_input(data->phy_irq_pin, 0);
at91_set_deglitch(data->phy_irq_pin, 1);
}
/* Pins used for MII and RMII */
at91_set_A_periph(AT91_PIN_PA16, 0); /* EMDIO */
at91_set_A_periph(AT91_PIN_PA15, 0); /* EMDC */
at91_set_A_periph(AT91_PIN_PA14, 0); /* ERXER */
at91_set_A_periph(AT91_PIN_PA13, 0); /* ERX1 */
at91_set_A_periph(AT91_PIN_PA12, 0); /* ERX0 */
at91_set_A_periph(AT91_PIN_PA11, 0); /* ECRS_ECRSDV */
at91_set_A_periph(AT91_PIN_PA10, 0); /* ETX1 */
at91_set_A_periph(AT91_PIN_PA9, 0); /* ETX0 */
at91_set_A_periph(AT91_PIN_PA8, 0); /* ETXEN */
at91_set_A_periph(AT91_PIN_PA7, 0); /* ETXCK_EREFCK */
if (!data->is_rmii) {
at91_set_B_periph(AT91_PIN_PB19, 0); /* ERXCK */
at91_set_B_periph(AT91_PIN_PB18, 0); /* ECOL */
at91_set_B_periph(AT91_PIN_PB17, 0); /* ERXDV */
at91_set_B_periph(AT91_PIN_PB16, 0); /* ERX3 */
at91_set_B_periph(AT91_PIN_PB15, 0); /* ERX2 */
at91_set_B_periph(AT91_PIN_PB14, 0); /* ETXER */
at91_set_B_periph(AT91_PIN_PB13, 0); /* ETX3 */
at91_set_B_periph(AT91_PIN_PB12, 0); /* ETX2 */
}
eth_data = *data;
platform_device_register(&at91rm9200_eth_device);
}
#else
void __init at91_add_device_eth(struct at91_eth_data *data) {}
#endif
/* --------------------------------------------------------------------
* Compact Flash / PCMCIA
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
static struct at91_cf_data cf_data;
#define CF_BASE AT91_CHIPSELECT_4
static struct resource cf_resources[] = {
[0] = {
.start = CF_BASE,
/* ties up CS4, CS5 and CS6 */
.end = CF_BASE + (0x30000000 - 1),
.flags = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
},
};
static struct platform_device at91rm9200_cf_device = {
.name = "at91_cf",
.id = -1,
.dev = {
.platform_data = &cf_data,
},
.resource = cf_resources,
.num_resources = ARRAY_SIZE(cf_resources),
};
void __init at91_add_device_cf(struct at91_cf_data *data)
{
unsigned int csa;
if (!data)
return;
data->chipselect = 4; /* can only use EBI ChipSelect 4 */
/* CF takes over CS4, CS5, CS6 */
csa = at91_sys_read(AT91_EBI_CSA);
at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);
/*
* Static memory controller timing adjustments.
* REVISIT: these timings are in terms of MCK cycles, so
* when MCK changes (cpufreq etc) so must these values...
*/
at91_sys_write(AT91_SMC_CSR(4),
AT91_SMC_ACSS_STD
| AT91_SMC_DBW_16
| AT91_SMC_BAT
| AT91_SMC_WSEN
| AT91_SMC_NWS_(32) /* wait states */
| AT91_SMC_RWSETUP_(6) /* setup time */
| AT91_SMC_RWHOLD_(4) /* hold time */
);
/* input/irq */
if (data->irq_pin) {
at91_set_gpio_input(data->irq_pin, 1);
at91_set_deglitch(data->irq_pin, 1);
}
at91_set_gpio_input(data->det_pin, 1);
at91_set_deglitch(data->det_pin, 1);
/* outputs, initially off */
if (data->vcc_pin)
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 */
/* nWAIT is _not_ a default setting */
at91_set_A_periph(AT91_PIN_PC6, 1); /* nWAIT */
cf_data = *data;
platform_device_register(&at91rm9200_cf_device);
}
#else
void __init at91_add_device_cf(struct at91_cf_data *data) {}
#endif
/* --------------------------------------------------------------------
* MMC / SD
* -------------------------------------------------------------------- */
#if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
static u64 mmc_dmamask = 0xffffffffUL;
static struct at91_mmc_data mmc_data;
static struct resource mmc_resources[] = {
[0] = {
.start = AT91RM9200_BASE_MCI,
.end = AT91RM9200_BASE_MCI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_MCI,
.end = AT91RM9200_ID_MCI,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_mmc_device = {
.name = "at91_mci",
.id = -1,
.dev = {
.dma_mask = &mmc_dmamask,
.coherent_dma_mask = 0xffffffff,
.platform_data = &mmc_data,
},
.resource = mmc_resources,
.num_resources = ARRAY_SIZE(mmc_resources),
};
void __init at91_add_device_mmc(struct at91_mmc_data *data)
{
if (!data)
return;
/* input/irq */
if (data->det_pin) {
at91_set_gpio_input(data->det_pin, 1);
at91_set_deglitch(data->det_pin, 1);
}
if (data->wp_pin)
at91_set_gpio_input(data->wp_pin, 1);
if (data->vcc_pin)
at91_set_gpio_output(data->vcc_pin, 0);
/* CLK */
at91_set_A_periph(AT91_PIN_PA27, 0);
if (data->slot_b) {
/* CMD */
at91_set_B_periph(AT91_PIN_PA8, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_B_periph(AT91_PIN_PA9, 1);
if (data->wire4) {
at91_set_B_periph(AT91_PIN_PA10, 1);
at91_set_B_periph(AT91_PIN_PA11, 1);
at91_set_B_periph(AT91_PIN_PA12, 1);
}
} else {
/* CMD */
at91_set_A_periph(AT91_PIN_PA28, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_A_periph(AT91_PIN_PA29, 1);
if (data->wire4) {
at91_set_B_periph(AT91_PIN_PB3, 1);
at91_set_B_periph(AT91_PIN_PB4, 1);
at91_set_B_periph(AT91_PIN_PB5, 1);
}
}
mmc_data = *data;
platform_device_register(&at91rm9200_mmc_device);
}
#else
void __init at91_add_device_mmc(struct at91_mmc_data *data) {}
#endif
/* --------------------------------------------------------------------
* NAND / SmartMedia
* -------------------------------------------------------------------- */
#if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
static struct at91_nand_data nand_data;
#define NAND_BASE AT91_CHIPSELECT_3
static struct resource nand_resources[] = {
{
.start = NAND_BASE,
.end = NAND_BASE + SZ_8M - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device at91rm9200_nand_device = {
.name = "at91_nand",
.id = -1,
.dev = {
.platform_data = &nand_data,
},
.resource = nand_resources,
.num_resources = ARRAY_SIZE(nand_resources),
};
void __init at91_add_device_nand(struct at91_nand_data *data)
{
unsigned int csa;
if (!data)
return;
/* enable the address range of CS3 */
csa = at91_sys_read(AT91_EBI_CSA);
at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);
/* set the bus interface characteristics */
at91_sys_write(AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
| AT91_SMC_NWS_(5)
| AT91_SMC_TDF_(1)
| AT91_SMC_RWSETUP_(0) /* tDS Data Set up Time 30 - ns */
| AT91_SMC_RWHOLD_(1) /* tDH Data Hold Time 20 - ns */
);
/* enable pin */
if (data->enable_pin)
at91_set_gpio_output(data->enable_pin, 1);
/* ready/busy pin */
if (data->rdy_pin)
at91_set_gpio_input(data->rdy_pin, 1);
/* card detect pin */
if (data->det_pin)
at91_set_gpio_input(data->det_pin, 1);
at91_set_A_periph(AT91_PIN_PC1, 0); /* SMOE */
at91_set_A_periph(AT91_PIN_PC3, 0); /* SMWE */
nand_data = *data;
platform_device_register(&at91rm9200_nand_device);
}
#else
void __init at91_add_device_nand(struct at91_nand_data *data) {}
#endif
/* --------------------------------------------------------------------
* TWI (i2c)
* -------------------------------------------------------------------- */
#if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
static struct resource twi_resources[] = {
[0] = {
.start = AT91RM9200_BASE_TWI,
.end = AT91RM9200_BASE_TWI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_TWI,
.end = AT91RM9200_ID_TWI,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91rm9200_twi_device = {
.name = "at91_i2c",
.id = -1,
.resource = twi_resources,
.num_resources = ARRAY_SIZE(twi_resources),
};
void __init at91_add_device_i2c(void)
{
/* pins used for TWI interface */
at91_set_A_periph(AT91_PIN_PA25, 0); /* TWD */
at91_set_multi_drive(AT91_PIN_PA25, 1);
at91_set_A_periph(AT91_PIN_PA26, 0); /* TWCK */
at91_set_multi_drive(AT91_PIN_PA26, 1);
platform_device_register(&at91rm9200_twi_device);
}
#else
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 spi_resources[] = {
[0] = {
.start = AT91RM9200_BASE_SPI,
.end = AT91RM9200_BASE_SPI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_SPI,
.end = AT91RM9200_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 = spi_resources,
.num_resources = ARRAY_SIZE(spi_resources),
};
static const unsigned 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 = 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("spi_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_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
static struct platform_device at91rm9200_rtc_device = {
.name = "at91_rtc",
.id = -1,
.num_resources = 0,
};
static void __init at91_add_device_rtc(void)
{
platform_device_register(&at91rm9200_rtc_device);
}
#else
static void __init at91_add_device_rtc(void) {}
#endif
/* --------------------------------------------------------------------
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_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
/* --------------------------------------------------------------------
* LEDs
* -------------------------------------------------------------------- */
#if defined(CONFIG_LEDS)
u8 at91_leds_cpu;
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;
}
#else
void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
#endif
/* --------------------------------------------------------------------
* UART
* -------------------------------------------------------------------- */
#if defined(CONFIG_SERIAL_ATMEL)
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 atmel_uart_data dbgu_data = {
.use_dma_tx = 0,
.use_dma_rx = 0, /* DBGU not capable of receive DMA */
.regs = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
};
static struct platform_device at91rm9200_dbgu_device = {
.name = "atmel_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 = AT91RM9200_BASE_US0,
.end = AT91RM9200_BASE_US0 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_US0,
.end = AT91RM9200_ID_US0,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart0_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
};
static struct platform_device at91rm9200_uart0_device = {
.name = "atmel_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 = AT91RM9200_BASE_US1,
.end = AT91RM9200_BASE_US1 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_US1,
.end = AT91RM9200_ID_US1,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart1_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
};
static struct platform_device at91rm9200_uart1_device = {
.name = "atmel_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 = AT91RM9200_BASE_US2,
.end = AT91RM9200_BASE_US2 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_US2,
.end = AT91RM9200_ID_US2,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart2_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
};
static struct platform_device at91rm9200_uart2_device = {
.name = "atmel_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 = AT91RM9200_BASE_US3,
.end = AT91RM9200_BASE_US3 + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_US3,
.end = AT91RM9200_ID_US3,
.flags = IORESOURCE_IRQ,
},
};
static struct atmel_uart_data uart3_data = {
.use_dma_tx = 1,
.use_dma_rx = 1,
};
static struct platform_device at91rm9200_uart3_device = {
.name = "atmel_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[ATMEL_MAX_UART]; /* the UARTs to use */
struct platform_device *atmel_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 < ATMEL_MAX_UART)
atmel_default_console_device = at91_uarts[config->console_tty];
if (!atmel_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 < ATMEL_MAX_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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