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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [arch/] [arm/] [mach-at91/] [at91sam9261_devices.c] - Rev 3
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/* * arch/arm/mach-at91/at91sam9261_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 <linux/i2c-gpio.h> #include <linux/fb.h> #include <video/atmel_lcdc.h> #include <asm/arch/board.h> #include <asm/arch/gpio.h> #include <asm/arch/at91sam9261.h> #include <asm/arch/at91sam9261_matrix.h> #include <asm/arch/at91sam926x_mc.h> #include "generic.h" /* -------------------------------------------------------------------- * 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 = AT91SAM9261_UHP_BASE, .end = AT91SAM9261_UHP_BASE + SZ_1M - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9261_ID_UHP, .end = AT91SAM9261_ID_UHP, .flags = IORESOURCE_IRQ, }, }; static struct platform_device at91sam9261_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(&at91sam9261_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 = AT91SAM9261_BASE_UDP, .end = AT91SAM9261_BASE_UDP + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9261_ID_UDP, .end = AT91SAM9261_ID_UDP, .flags = IORESOURCE_IRQ, }, }; static struct platform_device at91sam9261_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) { unsigned long x; if (!data) return; if (data->vbus_pin) { at91_set_gpio_input(data->vbus_pin, 0); at91_set_deglitch(data->vbus_pin, 1); } /* Pullup pin is handled internally */ x = at91_sys_read(AT91_MATRIX_USBPUCR); at91_sys_write(AT91_MATRIX_USBPUCR, x | AT91_MATRIX_USBPUCR_PUON); udc_data = *data; platform_device_register(&at91sam9261_udc_device); } #else void __init at91_add_device_udc(struct at91_udc_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 = AT91SAM9261_BASE_MCI, .end = AT91SAM9261_BASE_MCI + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9261_ID_MCI, .end = AT91SAM9261_ID_MCI, .flags = IORESOURCE_IRQ, }, }; static struct platform_device at91sam9261_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_B_periph(AT91_PIN_PA2, 0); /* CMD */ at91_set_B_periph(AT91_PIN_PA1, 1); /* DAT0, maybe DAT1..DAT3 */ at91_set_B_periph(AT91_PIN_PA0, 1); if (data->wire4) { at91_set_B_periph(AT91_PIN_PA4, 1); at91_set_B_periph(AT91_PIN_PA5, 1); at91_set_B_periph(AT91_PIN_PA6, 1); } mmc_data = *data; platform_device_register(&at91sam9261_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, mode; if (!data) return; csa = at91_sys_read(AT91_MATRIX_EBICSA); at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC); /* 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)); if (data->bus_width_16) mode = AT91_SMC_DBW_16; else mode = AT91_SMC_DBW_8; at91_sys_write(AT91_SMC_MODE(3), mode | 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_PC0, 0); /* NANDOE */ at91_set_A_periph(AT91_PIN_PC1, 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) * -------------------------------------------------------------------- */ /* * Prefer the GPIO code since the TWI controller isn't robust * (gets overruns and underruns under load) and can only issue * repeated STARTs in one scenario (the driver doesn't yet handle them). */ #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE) static struct i2c_gpio_platform_data pdata = { .sda_pin = AT91_PIN_PA7, .sda_is_open_drain = 1, .scl_pin = AT91_PIN_PA8, .scl_is_open_drain = 1, .udelay = 2, /* ~100 kHz */ }; static struct platform_device at91sam9261_twi_device = { .name = "i2c-gpio", .id = -1, .dev.platform_data = &pdata, }; void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) { at91_set_GPIO_periph(AT91_PIN_PA7, 1); /* TWD (SDA) */ at91_set_multi_drive(AT91_PIN_PA7, 1); at91_set_GPIO_periph(AT91_PIN_PA8, 1); /* TWCK (SCL) */ at91_set_multi_drive(AT91_PIN_PA8, 1); i2c_register_board_info(0, devices, nr_devices); platform_device_register(&at91sam9261_twi_device); } #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE) static struct resource twi_resources[] = { [0] = { .start = AT91SAM9261_BASE_TWI, .end = AT91SAM9261_BASE_TWI + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9261_ID_TWI, .end = AT91SAM9261_ID_TWI, .flags = IORESOURCE_IRQ, }, }; static struct platform_device at91sam9261_twi_device = { .name = "at91_i2c", .id = -1, .resource = twi_resources, .num_resources = ARRAY_SIZE(twi_resources), }; void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) { /* pins used for TWI interface */ at91_set_A_periph(AT91_PIN_PA7, 0); /* TWD */ at91_set_multi_drive(AT91_PIN_PA7, 1); at91_set_A_periph(AT91_PIN_PA8, 0); /* TWCK */ at91_set_multi_drive(AT91_PIN_PA8, 1); i2c_register_board_info(0, devices, nr_devices); platform_device_register(&at91sam9261_twi_device); } #else void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {} #endif /* -------------------------------------------------------------------- * SPI * -------------------------------------------------------------------- */ #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE) static u64 spi_dmamask = 0xffffffffUL; static struct resource spi0_resources[] = { [0] = { .start = AT91SAM9261_BASE_SPI0, .end = AT91SAM9261_BASE_SPI0 + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9261_ID_SPI0, .end = AT91SAM9261_ID_SPI0, .flags = IORESOURCE_IRQ, }, }; static struct platform_device at91sam9261_spi0_device = { .name = "atmel_spi", .id = 0, .dev = { .dma_mask = &spi_dmamask, .coherent_dma_mask = 0xffffffff, }, .resource = spi0_resources, .num_resources = ARRAY_SIZE(spi0_resources), }; static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 }; static struct resource spi1_resources[] = { [0] = { .start = AT91SAM9261_BASE_SPI1, .end = AT91SAM9261_BASE_SPI1 + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9261_ID_SPI1, .end = AT91SAM9261_ID_SPI1, .flags = IORESOURCE_IRQ, }, }; static struct platform_device at91sam9261_spi1_device = { .name = "atmel_spi", .id = 1, .dev = { .dma_mask = &spi_dmamask, .coherent_dma_mask = 0xffffffff, }, .resource = spi1_resources, .num_resources = ARRAY_SIZE(spi1_resources), }; static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB28, AT91_PIN_PA24, AT91_PIN_PA25, AT91_PIN_PA26 }; void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) { int i; unsigned long cs_pin; short enable_spi0 = 0; short enable_spi1 = 0; /* Choose SPI chip-selects */ for (i = 0; i < nr_devices; i++) { if (devices[i].controller_data) cs_pin = (unsigned long) devices[i].controller_data; else if (devices[i].bus_num == 0) cs_pin = spi0_standard_cs[devices[i].chip_select]; else cs_pin = spi1_standard_cs[devices[i].chip_select]; if (devices[i].bus_num == 0) enable_spi0 = 1; else enable_spi1 = 1; /* 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); /* Configure SPI bus(es) */ if (enable_spi0) { at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */ at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */ at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */ at91_clock_associate("spi0_clk", &at91sam9261_spi0_device.dev, "spi_clk"); platform_device_register(&at91sam9261_spi0_device); } if (enable_spi1) { at91_set_A_periph(AT91_PIN_PB30, 0); /* SPI1_MISO */ at91_set_A_periph(AT91_PIN_PB31, 0); /* SPI1_MOSI */ at91_set_A_periph(AT91_PIN_PB29, 0); /* SPI1_SPCK */ at91_clock_associate("spi1_clk", &at91sam9261_spi1_device.dev, "spi_clk"); platform_device_register(&at91sam9261_spi1_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 = AT91SAM9261_LCDC_BASE, .end = AT91SAM9261_LCDC_BASE + SZ_4K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9261_ID_LCDC, .end = AT91SAM9261_ID_LCDC, .flags = IORESOURCE_IRQ, }, #if defined(CONFIG_FB_INTSRAM) [2] = { .start = AT91SAM9261_SRAM_BASE, .end = AT91SAM9261_SRAM_BASE + AT91SAM9261_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_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */ at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */ at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */ at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */ at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */ at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */ at91_set_A_periph(AT91_PIN_PB9, 0); /* LCDD4 */ at91_set_A_periph(AT91_PIN_PB10, 0); /* LCDD5 */ at91_set_A_periph(AT91_PIN_PB11, 0); /* LCDD6 */ at91_set_A_periph(AT91_PIN_PB12, 0); /* LCDD7 */ at91_set_A_periph(AT91_PIN_PB15, 0); /* LCDD10 */ at91_set_A_periph(AT91_PIN_PB16, 0); /* LCDD11 */ at91_set_A_periph(AT91_PIN_PB17, 0); /* LCDD12 */ at91_set_A_periph(AT91_PIN_PB18, 0); /* LCDD13 */ at91_set_A_periph(AT91_PIN_PB19, 0); /* LCDD14 */ at91_set_A_periph(AT91_PIN_PB20, 0); /* LCDD15 */ at91_set_B_periph(AT91_PIN_PB23, 0); /* LCDD18 */ at91_set_B_periph(AT91_PIN_PB24, 0); /* LCDD19 */ at91_set_B_periph(AT91_PIN_PB25, 0); /* LCDD20 */ at91_set_B_periph(AT91_PIN_PB26, 0); /* LCDD21 */ at91_set_B_periph(AT91_PIN_PB27, 0); /* LCDD22 */ at91_set_B_periph(AT91_PIN_PB28, 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 at91sam9261_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_PA9, 0); /* DRXD */ at91_set_A_periph(AT91_PIN_PA10, 1); /* DTXD */ } static struct resource uart0_resources[] = { [0] = { .start = AT91SAM9261_BASE_US0, .end = AT91SAM9261_BASE_US0 + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9261_ID_US0, .end = AT91SAM9261_ID_US0, .flags = IORESOURCE_IRQ, }, }; static struct atmel_uart_data uart0_data = { .use_dma_tx = 1, .use_dma_rx = 1, }; static struct platform_device at91sam9261_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_PC8, 1); /* TXD0 */ at91_set_A_periph(AT91_PIN_PC9, 0); /* RXD0 */ at91_set_A_periph(AT91_PIN_PC10, 0); /* RTS0 */ at91_set_A_periph(AT91_PIN_PC11, 0); /* CTS0 */ } static struct resource uart1_resources[] = { [0] = { .start = AT91SAM9261_BASE_US1, .end = AT91SAM9261_BASE_US1 + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9261_ID_US1, .end = AT91SAM9261_ID_US1, .flags = IORESOURCE_IRQ, }, }; static struct atmel_uart_data uart1_data = { .use_dma_tx = 1, .use_dma_rx = 1, }; static struct platform_device at91sam9261_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_PC12, 1); /* TXD1 */ at91_set_A_periph(AT91_PIN_PC13, 0); /* RXD1 */ } static struct resource uart2_resources[] = { [0] = { .start = AT91SAM9261_BASE_US2, .end = AT91SAM9261_BASE_US2 + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9261_ID_US2, .end = AT91SAM9261_ID_US2, .flags = IORESOURCE_IRQ, }, }; static struct atmel_uart_data uart2_data = { .use_dma_tx = 1, .use_dma_rx = 1, }; static struct platform_device at91sam9261_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_PC15, 0); /* RXD2 */ at91_set_A_periph(AT91_PIN_PC14, 1); /* TXD2 */ } 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] = &at91sam9261_uart0_device; at91_clock_associate("usart0_clk", &at91sam9261_uart0_device.dev, "usart"); break; case 1: configure_usart1_pins(); at91_uarts[i] = &at91sam9261_uart1_device; at91_clock_associate("usart1_clk", &at91sam9261_uart1_device.dev, "usart"); break; case 2: configure_usart2_pins(); at91_uarts[i] = &at91sam9261_uart2_device; at91_clock_associate("usart2_clk", &at91sam9261_uart2_device.dev, "usart"); break; case 3: configure_dbgu_pins(); at91_uarts[i] = &at91sam9261_dbgu_device; at91_clock_associate("mck", &at91sam9261_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);