/* * arch/arm/mach-at91/at91rm9200_devices.c * * Copyright (C) 2005 Thibaut VARENE * 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 #include #include #include #include #include #include #include #include #include "generic.h" /* -------------------------------------------------------------------- * USB Host * -------------------------------------------------------------------- */ #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) static u64 ohci_dmamask = DMA_BIT_MASK(32); 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 = DMA_BIT_MASK(32), .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 = DMA_BIT_MASK(32); 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 = ð_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), .platform_data = ð_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 = DMA_BIT_MASK(32); 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 = DMA_BIT_MASK(32), .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_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(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 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) * -------------------------------------------------------------------- */ /* * 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_PA25, .sda_is_open_drain = 1, .scl_pin = AT91_PIN_PA26, .scl_is_open_drain = 1, .udelay = 2, /* ~100 kHz */ }; static struct platform_device at91rm9200_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_PA25, 1); /* TWD (SDA) */ at91_set_multi_drive(AT91_PIN_PA25, 1); at91_set_GPIO_periph(AT91_PIN_PA26, 1); /* TWCK (SCL) */ at91_set_multi_drive(AT91_PIN_PA26, 1); i2c_register_board_info(0, devices, nr_devices); platform_device_register(&at91rm9200_twi_device); } #elif 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(struct i2c_board_info *devices, int nr_devices) { /* 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); i2c_register_board_info(0, devices, nr_devices); platform_device_register(&at91rm9200_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 = DMA_BIT_MASK(32); 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 = "atmel_spi", .id = 0, .dev = { .dma_mask = &spi_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), }, .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]; /* 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(&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 /* -------------------------------------------------------------------- * SSC -- Synchronous Serial Controller * -------------------------------------------------------------------- */ #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE) static u64 ssc0_dmamask = DMA_BIT_MASK(32); static struct resource ssc0_resources[] = { [0] = { .start = AT91RM9200_BASE_SSC0, .end = AT91RM9200_BASE_SSC0 + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91RM9200_ID_SSC0, .end = AT91RM9200_ID_SSC0, .flags = IORESOURCE_IRQ, }, }; static struct platform_device at91rm9200_ssc0_device = { .name = "ssc", .id = 0, .dev = { .dma_mask = &ssc0_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), }, .resource = ssc0_resources, .num_resources = ARRAY_SIZE(ssc0_resources), }; static inline void configure_ssc0_pins(unsigned pins) { if (pins & ATMEL_SSC_TF) at91_set_A_periph(AT91_PIN_PB0, 1); if (pins & ATMEL_SSC_TK) at91_set_A_periph(AT91_PIN_PB1, 1); if (pins & ATMEL_SSC_TD) at91_set_A_periph(AT91_PIN_PB2, 1); if (pins & ATMEL_SSC_RD) at91_set_A_periph(AT91_PIN_PB3, 1); if (pins & ATMEL_SSC_RK) at91_set_A_periph(AT91_PIN_PB4, 1); if (pins & ATMEL_SSC_RF) at91_set_A_periph(AT91_PIN_PB5, 1); } static u64 ssc1_dmamask = DMA_BIT_MASK(32); static struct resource ssc1_resources[] = { [0] = { .start = AT91RM9200_BASE_SSC1, .end = AT91RM9200_BASE_SSC1 + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91RM9200_ID_SSC1, .end = AT91RM9200_ID_SSC1, .flags = IORESOURCE_IRQ, }, }; static struct platform_device at91rm9200_ssc1_device = { .name = "ssc", .id = 1, .dev = { .dma_mask = &ssc1_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), }, .resource = ssc1_resources, .num_resources = ARRAY_SIZE(ssc1_resources), }; static inline void configure_ssc1_pins(unsigned pins) { if (pins & ATMEL_SSC_TF) at91_set_A_periph(AT91_PIN_PB6, 1); if (pins & ATMEL_SSC_TK) at91_set_A_periph(AT91_PIN_PB7, 1); if (pins & ATMEL_SSC_TD) at91_set_A_periph(AT91_PIN_PB8, 1); if (pins & ATMEL_SSC_RD) at91_set_A_periph(AT91_PIN_PB9, 1); if (pins & ATMEL_SSC_RK) at91_set_A_periph(AT91_PIN_PB10, 1); if (pins & ATMEL_SSC_RF) at91_set_A_periph(AT91_PIN_PB11, 1); } static u64 ssc2_dmamask = DMA_BIT_MASK(32); static struct resource ssc2_resources[] = { [0] = { .start = AT91RM9200_BASE_SSC2, .end = AT91RM9200_BASE_SSC2 + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91RM9200_ID_SSC2, .end = AT91RM9200_ID_SSC2, .flags = IORESOURCE_IRQ, }, }; static struct platform_device at91rm9200_ssc2_device = { .name = "ssc", .id = 2, .dev = { .dma_mask = &ssc2_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), }, .resource = ssc2_resources, .num_resources = ARRAY_SIZE(ssc2_resources), }; static inline void configure_ssc2_pins(unsigned pins) { if (pins & ATMEL_SSC_TF) at91_set_A_periph(AT91_PIN_PB12, 1); if (pins & ATMEL_SSC_TK) at91_set_A_periph(AT91_PIN_PB13, 1); if (pins & ATMEL_SSC_TD) at91_set_A_periph(AT91_PIN_PB14, 1); if (pins & ATMEL_SSC_RD) at91_set_A_periph(AT91_PIN_PB15, 1); if (pins & ATMEL_SSC_RK) at91_set_A_periph(AT91_PIN_PB16, 1); if (pins & ATMEL_SSC_RF) at91_set_A_periph(AT91_PIN_PB17, 1); } /* * SSC controllers are accessed through library code, instead of any * kind of all-singing/all-dancing driver. For example one could be * used by a particular I2S audio codec's driver, while another one * on the same system might be used by a custom data capture driver. */ void __init at91_add_device_ssc(unsigned id, unsigned pins) { struct platform_device *pdev; /* * NOTE: caller is responsible for passing information matching * "pins" to whatever will be using each particular controller. */ switch (id) { case AT91RM9200_ID_SSC0: pdev = &at91rm9200_ssc0_device; configure_ssc0_pins(pins); at91_clock_associate("ssc0_clk", &pdev->dev, "ssc"); break; case AT91RM9200_ID_SSC1: pdev = &at91rm9200_ssc1_device; configure_ssc1_pins(pins); at91_clock_associate("ssc1_clk", &pdev->dev, "ssc"); break; case AT91RM9200_ID_SSC2: pdev = &at91rm9200_ssc2_device; configure_ssc2_pins(pins); at91_clock_associate("ssc2_clk", &pdev->dev, "ssc"); break; default: return; } platform_device_register(pdev); } #else void __init at91_add_device_ssc(unsigned id, unsigned pins) {} #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 u64 dbgu_dmamask = DMA_BIT_MASK(32); static struct platform_device at91rm9200_dbgu_device = { .name = "atmel_usart", .id = 0, .dev = { .dma_mask = &dbgu_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), .platform_data = &dbgu_data, }, .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 u64 uart0_dmamask = DMA_BIT_MASK(32); static struct platform_device at91rm9200_uart0_device = { .name = "atmel_usart", .id = 1, .dev = { .dma_mask = &uart0_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), .platform_data = &uart0_data, }, .resource = uart0_resources, .num_resources = ARRAY_SIZE(uart0_resources), }; static inline void configure_usart0_pins(unsigned pins) { at91_set_A_periph(AT91_PIN_PA17, 1); /* TXD0 */ at91_set_A_periph(AT91_PIN_PA18, 0); /* RXD0 */ if (pins & ATMEL_UART_CTS) at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */ if (pins & ATMEL_UART_RTS) { /* * 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 u64 uart1_dmamask = DMA_BIT_MASK(32); static struct platform_device at91rm9200_uart1_device = { .name = "atmel_usart", .id = 2, .dev = { .dma_mask = &uart1_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), .platform_data = &uart1_data, }, .resource = uart1_resources, .num_resources = ARRAY_SIZE(uart1_resources), }; static inline void configure_usart1_pins(unsigned pins) { at91_set_A_periph(AT91_PIN_PB20, 1); /* TXD1 */ at91_set_A_periph(AT91_PIN_PB21, 0); /* RXD1 */ if (pins & ATMEL_UART_RI) at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */ if (pins & ATMEL_UART_DTR) at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */ if (pins & ATMEL_UART_DCD) at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */ if (pins & ATMEL_UART_CTS) at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */ if (pins & ATMEL_UART_DSR) at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */ if (pins & ATMEL_UART_RTS) 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 u64 uart2_dmamask = DMA_BIT_MASK(32); static struct platform_device at91rm9200_uart2_device = { .name = "atmel_usart", .id = 3, .dev = { .dma_mask = &uart2_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), .platform_data = &uart2_data, }, .resource = uart2_resources, .num_resources = ARRAY_SIZE(uart2_resources), }; static inline void configure_usart2_pins(unsigned pins) { at91_set_A_periph(AT91_PIN_PA22, 0); /* RXD2 */ at91_set_A_periph(AT91_PIN_PA23, 1); /* TXD2 */ if (pins & ATMEL_UART_CTS) at91_set_B_periph(AT91_PIN_PA30, 0); /* CTS2 */ if (pins & ATMEL_UART_RTS) at91_set_B_periph(AT91_PIN_PA31, 0); /* RTS2 */ } 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 u64 uart3_dmamask = DMA_BIT_MASK(32); static struct platform_device at91rm9200_uart3_device = { .name = "atmel_usart", .id = 4, .dev = { .dma_mask = &uart3_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), .platform_data = &uart3_data, }, .resource = uart3_resources, .num_resources = ARRAY_SIZE(uart3_resources), }; static inline void configure_usart3_pins(unsigned pins) { at91_set_B_periph(AT91_PIN_PA5, 1); /* TXD3 */ at91_set_B_periph(AT91_PIN_PA6, 0); /* RXD3 */ if (pins & ATMEL_UART_CTS) at91_set_B_periph(AT91_PIN_PB1, 0); /* CTS3 */ if (pins & ATMEL_UART_RTS) at91_set_B_periph(AT91_PIN_PB0, 0); /* RTS3 */ } static 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 __deprecated 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(ATMEL_UART_CTS | ATMEL_UART_RTS); at91_uarts[i] = &at91rm9200_uart0_device; at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart"); break; case 1: configure_usart1_pins(ATMEL_UART_CTS | ATMEL_UART_RTS | ATMEL_UART_DSR | ATMEL_UART_DTR | ATMEL_UART_DCD | ATMEL_UART_RI); at91_uarts[i] = &at91rm9200_uart1_device; at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart"); break; case 2: configure_usart2_pins(0); at91_uarts[i] = &at91rm9200_uart2_device; at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart"); break; case 3: configure_usart3_pins(0); 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_register_uart(unsigned id, unsigned portnr, unsigned pins) { struct platform_device *pdev; switch (id) { case 0: /* DBGU */ pdev = &at91rm9200_dbgu_device; configure_dbgu_pins(); at91_clock_associate("mck", &pdev->dev, "usart"); break; case AT91RM9200_ID_US0: pdev = &at91rm9200_uart0_device; configure_usart0_pins(pins); at91_clock_associate("usart0_clk", &pdev->dev, "usart"); break; case AT91RM9200_ID_US1: pdev = &at91rm9200_uart1_device; configure_usart1_pins(pins); at91_clock_associate("usart1_clk", &pdev->dev, "usart"); break; case AT91RM9200_ID_US2: pdev = &at91rm9200_uart2_device; configure_usart2_pins(pins); at91_clock_associate("usart2_clk", &pdev->dev, "usart"); break; case AT91RM9200_ID_US3: pdev = &at91rm9200_uart3_device; configure_usart3_pins(pins); at91_clock_associate("usart3_clk", &pdev->dev, "usart"); break; default: return; } pdev->id = portnr; /* update to mapped ID */ if (portnr < ATMEL_MAX_UART) at91_uarts[portnr] = pdev; } void __init at91_set_serial_console(unsigned portnr) { if (portnr < ATMEL_MAX_UART) atmel_default_console_device = at91_uarts[portnr]; 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 __deprecated at91_init_serial(struct at91_uart_config *config) {} void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {} void __init at91_set_serial_console(unsigned portnr) {} 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);