diff options
Diffstat (limited to 'arch/arm/mach-at91/at91sam9rl_devices.c')
| -rw-r--r-- | arch/arm/mach-at91/at91sam9rl_devices.c | 634 |
1 files changed, 634 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c new file mode 100644 index 0000000..e775aa6 --- /dev/null +++ b/arch/arm/mach-at91/at91sam9rl_devices.c @@ -0,0 +1,634 @@ +/* + * Copyright (C) 2007 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> + +#include <linux/platform_device.h> +#include <linux/fb.h> + +#include <video/atmel_lcdc.h> + +#include <asm/arch/board.h> +#include <asm/arch/gpio.h> +#include <asm/arch/at91sam9rl.h> +#include <asm/arch/at91sam9rl_matrix.h> +#include <asm/arch/at91sam926x_mc.h> + +#include "generic.h" + +#define SZ_512 0x00000200 +#define SZ_256 0x00000100 +#define SZ_16 0x00000010 + + +/* -------------------------------------------------------------------- + * 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 = AT91SAM9RL_BASE_MCI, + .end = AT91SAM9RL_BASE_MCI + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91SAM9RL_ID_MCI, + .end = AT91SAM9RL_ID_MCI, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device at91sam9rl_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(short mmc_id, 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_PA2, 0); + + /* CMD */ + at91_set_A_periph(AT91_PIN_PA1, 1); + + /* DAT0, maybe DAT1..DAT3 */ + at91_set_A_periph(AT91_PIN_PA0, 1); + if (data->wire4) { + at91_set_A_periph(AT91_PIN_PA3, 1); + at91_set_A_periph(AT91_PIN_PA4, 1); + at91_set_A_periph(AT91_PIN_PA5, 1); + } + + mmc_data = *data; + platform_device_register(&at91sam9rl_mmc_device); +} +#else +void __init at91_add_device_mmc(short mmc_id, 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_256M - 1, + .flags = IORESOURCE_MEM, + } +}; + +static struct platform_device at91_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 long csa; + + if (!data) + return; + + csa = at91_sys_read(AT91_MATRIX_EBICSA); + at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA); + + /* set the bus interface characteristics */ + at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0) + | AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0)); + + at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(2) | AT91_SMC_NCS_WRPULSE_(5) + | AT91_SMC_NRDPULSE_(2) | AT91_SMC_NCS_RDPULSE_(5)); + + at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(7) | AT91_SMC_NRDCYCLE_(7)); + + at91_sys_write(AT91_SMC_MODE(3), AT91_SMC_DBW_8 | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(1)); + + /* 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_PB4, 0); /* NANDOE */ + at91_set_A_periph(AT91_PIN_PB5, 0); /* NANDWE */ + + nand_data = *data; + platform_device_register(&at91_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 = AT91SAM9RL_BASE_TWI0, + .end = AT91SAM9RL_BASE_TWI0 + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91SAM9RL_ID_TWI0, + .end = AT91SAM9RL_ID_TWI0, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device at91sam9rl_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_PA23, 0); /* TWD */ + at91_set_multi_drive(AT91_PIN_PA23, 1); + + at91_set_A_periph(AT91_PIN_PA24, 0); /* TWCK */ + at91_set_multi_drive(AT91_PIN_PA24, 1); + + platform_device_register(&at91sam9rl_twi_device); +} +#else +void __init at91_add_device_i2c(void) {} +#endif + + +/* -------------------------------------------------------------------- + * SPI + * -------------------------------------------------------------------- */ + +#if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE) +static u64 spi_dmamask = 0xffffffffUL; + +static struct resource spi_resources[] = { + [0] = { + .start = AT91SAM9RL_BASE_SPI, + .end = AT91SAM9RL_BASE_SPI + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91SAM9RL_ID_SPI, + .end = AT91SAM9RL_ID_SPI, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device at91sam9rl_spi_device = { + .name = "atmel_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_PA28, AT91_PIN_PB7, AT91_PIN_PD8, AT91_PIN_PD9 }; + + +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_PA25, 0); /* MISO */ + at91_set_A_periph(AT91_PIN_PA26, 0); /* MOSI */ + at91_set_A_periph(AT91_PIN_PA27, 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]; + + /* enable chip-select pin */ + at91_set_gpio_output(cs_pin, 1); + + /* pass chip-select pin to driver */ + devices[i].controller_data = (void *) cs_pin; + } + + spi_register_board_info(devices, nr_devices); + platform_device_register(&at91sam9rl_spi_device); +} +#else +void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {} +#endif + + +/* -------------------------------------------------------------------- + * LCD Controller + * -------------------------------------------------------------------- */ + +#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE) +static u64 lcdc_dmamask = 0xffffffffUL; +static struct atmel_lcdfb_info lcdc_data; + +static struct resource lcdc_resources[] = { + [0] = { + .start = AT91SAM9RL_LCDC_BASE, + .end = AT91SAM9RL_LCDC_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91SAM9RL_ID_LCDC, + .end = AT91SAM9RL_ID_LCDC, + .flags = IORESOURCE_IRQ, + }, +#if defined(CONFIG_FB_INTSRAM) + [2] = { + .start = AT91SAM9RL_SRAM_BASE, + .end = AT91SAM9RL_SRAM_BASE + AT91SAM9RL_SRAM_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +#endif +}; + +static struct platform_device at91_lcdc_device = { + .name = "atmel_lcdfb", + .id = 0, + .dev = { + .dma_mask = &lcdc_dmamask, + .coherent_dma_mask = 0xffffffff, + .platform_data = &lcdc_data, + }, + .resource = lcdc_resources, + .num_resources = ARRAY_SIZE(lcdc_resources), +}; + +void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) +{ + if (!data) { + return; + } + + at91_set_B_periph(AT91_PIN_PC1, 0); /* LCDPWR */ + at91_set_A_periph(AT91_PIN_PC5, 0); /* LCDHSYNC */ + at91_set_A_periph(AT91_PIN_PC6, 0); /* LCDDOTCK */ + at91_set_A_periph(AT91_PIN_PC7, 0); /* LCDDEN */ + at91_set_A_periph(AT91_PIN_PC3, 0); /* LCDCC */ + at91_set_B_periph(AT91_PIN_PC9, 0); /* LCDD3 */ + at91_set_B_periph(AT91_PIN_PC10, 0); /* LCDD4 */ + at91_set_B_periph(AT91_PIN_PC11, 0); /* LCDD5 */ + at91_set_B_periph(AT91_PIN_PC12, 0); /* LCDD6 */ + at91_set_B_periph(AT91_PIN_PC13, 0); /* LCDD7 */ + at91_set_B_periph(AT91_PIN_PC15, 0); /* LCDD11 */ + at91_set_B_periph(AT91_PIN_PC16, 0); /* LCDD12 */ + at91_set_B_periph(AT91_PIN_PC17, 0); /* LCDD13 */ + at91_set_B_periph(AT91_PIN_PC18, 0); /* LCDD14 */ + at91_set_B_periph(AT91_PIN_PC19, 0); /* LCDD15 */ + at91_set_B_periph(AT91_PIN_PC20, 0); /* LCDD18 */ + at91_set_B_periph(AT91_PIN_PC21, 0); /* LCDD19 */ + at91_set_B_periph(AT91_PIN_PC22, 0); /* LCDD20 */ + at91_set_B_periph(AT91_PIN_PC23, 0); /* LCDD21 */ + at91_set_B_periph(AT91_PIN_PC24, 0); /* LCDD22 */ + at91_set_B_periph(AT91_PIN_PC25, 0); /* LCDD23 */ + + lcdc_data = *data; + platform_device_register(&at91_lcdc_device); +} +#else +void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {} +#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) +{ + /* Enable GPIO to access the LEDs */ + at91_set_gpio_output(cpu_led, 1); + at91_set_gpio_output(timer_led, 1); + + 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 at91sam9rl_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_PA21, 0); /* DRXD */ + at91_set_A_periph(AT91_PIN_PA22, 1); /* DTXD */ +} + +static struct resource uart0_resources[] = { + [0] = { + .start = AT91SAM9RL_BASE_US0, + .end = AT91SAM9RL_BASE_US0 + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91SAM9RL_ID_US0, + .end = AT91SAM9RL_ID_US0, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct atmel_uart_data uart0_data = { + .use_dma_tx = 1, + .use_dma_rx = 1, +}; + +static struct platform_device at91sam9rl_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_PA6, 1); /* TXD0 */ + at91_set_A_periph(AT91_PIN_PA7, 0); /* RXD0 */ + at91_set_A_periph(AT91_PIN_PA9, 0); /* RTS0 */ + at91_set_A_periph(AT91_PIN_PA10, 0); /* CTS0 */ +} + +static struct resource uart1_resources[] = { + [0] = { + .start = AT91SAM9RL_BASE_US1, + .end = AT91SAM9RL_BASE_US1 + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91SAM9RL_ID_US1, + .end = AT91SAM9RL_ID_US1, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct atmel_uart_data uart1_data = { + .use_dma_tx = 1, + .use_dma_rx = 1, +}; + +static struct platform_device at91sam9rl_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_PA11, 1); /* TXD1 */ + at91_set_A_periph(AT91_PIN_PA12, 0); /* RXD1 */ +} + +static struct resource uart2_resources[] = { + [0] = { + .start = AT91SAM9RL_BASE_US2, + .end = AT91SAM9RL_BASE_US2 + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91SAM9RL_ID_US2, + .end = AT91SAM9RL_ID_US2, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct atmel_uart_data uart2_data = { + .use_dma_tx = 1, + .use_dma_rx = 1, +}; + +static struct platform_device at91sam9rl_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_PA13, 1); /* TXD2 */ + at91_set_A_periph(AT91_PIN_PA14, 0); /* RXD2 */ +} + +static struct resource uart3_resources[] = { + [0] = { + .start = AT91SAM9RL_BASE_US3, + .end = AT91SAM9RL_BASE_US3 + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91SAM9RL_ID_US3, + .end = AT91SAM9RL_ID_US3, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct atmel_uart_data uart3_data = { + .use_dma_tx = 1, + .use_dma_rx = 1, +}; + +static struct platform_device at91sam9rl_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_A_periph(AT91_PIN_PB0, 1); /* TXD3 */ + at91_set_A_periph(AT91_PIN_PB1, 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] = &at91sam9rl_uart0_device; + at91_clock_associate("usart0_clk", &at91sam9rl_uart0_device.dev, "usart"); + break; + case 1: + configure_usart1_pins(); + at91_uarts[i] = &at91sam9rl_uart1_device; + at91_clock_associate("usart1_clk", &at91sam9rl_uart1_device.dev, "usart"); + break; + case 2: + configure_usart2_pins(); + at91_uarts[i] = &at91sam9rl_uart2_device; + at91_clock_associate("usart2_clk", &at91sam9rl_uart2_device.dev, "usart"); + break; + case 3: + configure_usart3_pins(); + at91_uarts[i] = &at91sam9rl_uart3_device; + at91_clock_associate("usart3_clk", &at91sam9rl_uart3_device.dev, "usart"); + break; + case 4: + configure_dbgu_pins(); + at91_uarts[i] = &at91sam9rl_dbgu_device; + at91_clock_associate("mck", &at91sam9rl_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) +{ + return 0; +} + +arch_initcall(at91_add_standard_devices); |