[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: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Andrew Victor
Russell King
parent
814138ffa4
commit
2e83640270
1 changed files with 389 additions and 17 deletions
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@ -16,9 +16,15 @@
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#include <linux/config.h>
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#include <linux/platform_device.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/board.h>
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#include <asm/arch/pio.h>
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#include <asm/arch/gpio.h>
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#include "generic.h"
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#define SZ_512 0x00000200
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#define SZ_256 0x00000100
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#define SZ_16 0x00000010
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/* --------------------------------------------------------------------
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* USB Host
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@ -28,7 +34,7 @@
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static u64 ohci_dmamask = 0xffffffffUL;
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static struct at91_usbh_data usbh_data;
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static struct resource at91_usbh_resource[] = {
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static struct resource at91_usbh_resources[] = {
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[0] = {
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.start = AT91_UHP_BASE,
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.end = AT91_UHP_BASE + SZ_1M - 1,
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@ -42,15 +48,15 @@ static struct resource at91_usbh_resource[] = {
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};
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static struct platform_device at91rm9200_usbh_device = {
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.name = "at91rm9200-ohci",
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.name = "at91_ohci",
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.id = -1,
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.dev = {
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.dma_mask = &ohci_dmamask,
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.coherent_dma_mask = 0xffffffff,
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.platform_data = &usbh_data,
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},
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.resource = at91_usbh_resource,
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.num_resources = ARRAY_SIZE(at91_usbh_resource),
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.resource = at91_usbh_resources,
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.num_resources = ARRAY_SIZE(at91_usbh_resources),
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};
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void __init at91_add_device_usbh(struct at91_usbh_data *data)
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@ -74,11 +80,16 @@ void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
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static struct at91_udc_data udc_data;
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static struct resource at91_udc_resources[] = {
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{
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[0] = {
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.start = AT91_BASE_UDP,
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.end = AT91_BASE_UDP + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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}
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},
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[1] = {
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.start = AT91_ID_UDP,
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.end = AT91_ID_UDP,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91rm9200_udc_device = {
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@ -100,10 +111,8 @@ void __init at91_add_device_udc(struct at91_udc_data *data)
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at91_set_gpio_input(data->vbus_pin, 0);
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at91_set_deglitch(data->vbus_pin, 1);
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}
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if (data->pullup_pin) {
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if (data->pullup_pin)
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at91_set_gpio_output(data->pullup_pin, 0);
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at91_set_multi_drive(data->pullup_pin, 1);
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}
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udc_data = *data;
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platform_device_register(&at91rm9200_udc_device);
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@ -197,7 +206,7 @@ static struct at91_cf_data cf_data;
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static struct resource at91_cf_resources[] = {
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[0] = {
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.start = AT91_CF_BASE,
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/* ties up CS4, CS5, and CS6 */
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/* ties up CS4, CS5 and CS6 */
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.end = AT91_CF_BASE + (0x30000000 - 1),
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.flags = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
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},
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@ -231,6 +240,12 @@ void __init at91_add_device_cf(struct at91_cf_data *data)
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at91_set_gpio_output(data->vcc_pin, 0);
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at91_set_gpio_output(data->rst_pin, 0);
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/* force poweron defaults for these pins ... */
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at91_set_A_periph(AT91_PIN_PC9, 0); /* A25/CFRNW */
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at91_set_A_periph(AT91_PIN_PC10, 0); /* NCS4/CFCS */
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at91_set_A_periph(AT91_PIN_PC11, 0); /* NCS5/CFCE1 */
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at91_set_A_periph(AT91_PIN_PC12, 0); /* NCS6/CFCE2 */
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cf_data = *data;
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platform_device_register(&at91rm9200_cf_device);
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}
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@ -319,6 +334,7 @@ void __init at91_add_device_mmc(struct at91_mmc_data *data)
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void __init at91_add_device_mmc(struct at91_mmc_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* NAND / SmartMedia
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* -------------------------------------------------------------------- */
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@ -399,23 +415,111 @@ void __init at91_add_device_i2c(void) {}
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#endif
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/* --------------------------------------------------------------------
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* SPI
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_SPI_AT91) || defined(CONFIG_SPI_AT91_MODULE) || defined(CONFIG_AT91_SPI) || defined(CONFIG_AT91_SPI_MODULE)
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static u64 spi_dmamask = 0xffffffffUL;
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static struct resource at91_spi_resources[] = {
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[0] = {
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.start = AT91_BASE_SPI,
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.end = AT91_BASE_SPI + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_SPI,
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.end = AT91_ID_SPI,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91rm9200_spi_device = {
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.name = "at91_spi",
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.id = 0,
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.dev = {
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.dma_mask = &spi_dmamask,
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.coherent_dma_mask = 0xffffffff,
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},
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.resource = at91_spi_resources,
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.num_resources = ARRAY_SIZE(at91_spi_resources),
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};
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static const unsigned at91_spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
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void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
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{
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int i;
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unsigned long cs_pin;
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at91_set_A_periph(AT91_PIN_PA0, 0); /* MISO */
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at91_set_A_periph(AT91_PIN_PA1, 0); /* MOSI */
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at91_set_A_periph(AT91_PIN_PA2, 0); /* SPCK */
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/* Enable SPI chip-selects */
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for (i = 0; i < nr_devices; i++) {
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if (devices[i].controller_data)
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cs_pin = (unsigned long) devices[i].controller_data;
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else
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cs_pin = at91_spi_standard_cs[devices[i].chip_select];
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#ifdef CONFIG_SPI_AT91_MANUAL_CS
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at91_set_gpio_output(cs_pin, 1);
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#else
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at91_set_A_periph(cs_pin, 0);
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#endif
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/* pass chip-select pin to driver */
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devices[i].controller_data = (void *) cs_pin;
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}
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spi_register_board_info(devices, nr_devices);
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at91_clock_associate("spi0_clk", &at91rm9200_spi_device.dev, "spi");
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platform_device_register(&at91rm9200_spi_device);
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}
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#else
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void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
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#endif
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/* --------------------------------------------------------------------
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* RTC
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_AT91_RTC) || defined(CONFIG_AT91_RTC_MODULE)
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#if defined(CONFIG_RTC_DRV_AT91) || defined(CONFIG_RTC_DRV_AT91_MODULE)
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static struct platform_device at91rm9200_rtc_device = {
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.name = "at91_rtc",
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.id = -1,
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.num_resources = 0,
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};
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void __init at91_add_device_rtc(void)
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static void __init at91_add_device_rtc(void)
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{
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platform_device_register(&at91rm9200_rtc_device);
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}
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#else
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void __init at91_add_device_rtc(void) {}
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static void __init at91_add_device_rtc(void) {}
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#endif
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/* --------------------------------------------------------------------
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* Watchdog
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_AT91_WATCHDOG) || defined(CONFIG_AT91_WATCHDOG_MODULE)
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static struct platform_device at91rm9200_wdt_device = {
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.name = "at91_wdt",
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.id = -1,
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.num_resources = 0,
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};
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static void __init at91_add_device_watchdog(void)
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{
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platform_device_register(&at91rm9200_wdt_device);
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}
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#else
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static void __init at91_add_device_watchdog(void) {}
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#endif
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@ -429,13 +533,281 @@ u8 at91_leds_timer;
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void __init at91_init_leds(u8 cpu_led, u8 timer_led)
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{
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at91_leds_cpu = cpu_led;
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at91_leds_timer = timer_led;
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at91_leds_cpu = cpu_led;
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at91_leds_timer = timer_led;
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}
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#else
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void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
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#endif
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/* --------------------------------------------------------------------
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* UART
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_SERIAL_AT91)
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static struct resource dbgu_resources[] = {
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[0] = {
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.start = AT91_VA_BASE_SYS + AT91_DBGU,
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.end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_SYS,
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.end = AT91_ID_SYS,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct at91_uart_data dbgu_data = {
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.use_dma_tx = 0,
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.use_dma_rx = 0, /* DBGU not capable of receive DMA */
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};
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static struct platform_device at91rm9200_dbgu_device = {
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.name = "at91_usart",
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.id = 0,
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.dev = {
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.platform_data = &dbgu_data,
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.coherent_dma_mask = 0xffffffff,
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},
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.resource = dbgu_resources,
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.num_resources = ARRAY_SIZE(dbgu_resources),
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};
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static inline void configure_dbgu_pins(void)
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{
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at91_set_A_periph(AT91_PIN_PA30, 0); /* DRXD */
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at91_set_A_periph(AT91_PIN_PA31, 1); /* DTXD */
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}
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static struct resource uart0_resources[] = {
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[0] = {
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.start = AT91_BASE_US0,
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.end = AT91_BASE_US0 + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_US0,
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.end = AT91_ID_US0,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct at91_uart_data uart0_data = {
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.use_dma_tx = 1,
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.use_dma_rx = 1,
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};
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static struct platform_device at91rm9200_uart0_device = {
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.name = "at91_usart",
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.id = 1,
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.dev = {
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.platform_data = &uart0_data,
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.coherent_dma_mask = 0xffffffff,
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},
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.resource = uart0_resources,
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.num_resources = ARRAY_SIZE(uart0_resources),
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};
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static inline void configure_usart0_pins(void)
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{
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at91_set_A_periph(AT91_PIN_PA17, 1); /* TXD0 */
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at91_set_A_periph(AT91_PIN_PA18, 0); /* RXD0 */
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at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
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/*
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* AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
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* We need to drive the pin manually. Default is off (RTS is active low).
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*/
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at91_set_gpio_output(AT91_PIN_PA21, 1);
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}
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static struct resource uart1_resources[] = {
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[0] = {
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.start = AT91_BASE_US1,
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.end = AT91_BASE_US1 + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_US1,
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.end = AT91_ID_US1,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct at91_uart_data uart1_data = {
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.use_dma_tx = 1,
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.use_dma_rx = 1,
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};
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static struct platform_device at91rm9200_uart1_device = {
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.name = "at91_usart",
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.id = 2,
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.dev = {
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.platform_data = &uart1_data,
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.coherent_dma_mask = 0xffffffff,
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},
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.resource = uart1_resources,
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.num_resources = ARRAY_SIZE(uart1_resources),
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};
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static inline void configure_usart1_pins(void)
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{
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at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
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at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
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at91_set_A_periph(AT91_PIN_PB20, 1); /* TXD1 */
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at91_set_A_periph(AT91_PIN_PB21, 0); /* RXD1 */
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at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
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at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
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at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
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at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
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}
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static struct resource uart2_resources[] = {
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[0] = {
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.start = AT91_BASE_US2,
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.end = AT91_BASE_US2 + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_US2,
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.end = AT91_ID_US2,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct at91_uart_data uart2_data = {
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.use_dma_tx = 1,
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.use_dma_rx = 1,
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};
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static struct platform_device at91rm9200_uart2_device = {
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.name = "at91_usart",
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.id = 3,
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.dev = {
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.platform_data = &uart2_data,
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.coherent_dma_mask = 0xffffffff,
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},
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.resource = uart2_resources,
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.num_resources = ARRAY_SIZE(uart2_resources),
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};
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static inline void configure_usart2_pins(void)
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{
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at91_set_A_periph(AT91_PIN_PA22, 0); /* RXD2 */
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at91_set_A_periph(AT91_PIN_PA23, 1); /* TXD2 */
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}
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static struct resource uart3_resources[] = {
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[0] = {
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.start = AT91_BASE_US3,
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.end = AT91_BASE_US3 + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91_ID_US3,
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.end = AT91_ID_US3,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct at91_uart_data uart3_data = {
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.use_dma_tx = 1,
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.use_dma_rx = 1,
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};
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static struct platform_device at91rm9200_uart3_device = {
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.name = "at91_usart",
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.id = 4,
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.dev = {
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.platform_data = &uart3_data,
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.coherent_dma_mask = 0xffffffff,
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},
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.resource = uart3_resources,
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.num_resources = ARRAY_SIZE(uart3_resources),
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};
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static inline void configure_usart3_pins(void)
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{
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at91_set_B_periph(AT91_PIN_PA5, 1); /* TXD3 */
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at91_set_B_periph(AT91_PIN_PA6, 0); /* RXD3 */
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}
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struct platform_device *at91_uarts[AT91_NR_UART]; /* the UARTs to use */
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struct platform_device *at91_default_console_device; /* the serial console device */
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void __init at91_init_serial(struct at91_uart_config *config)
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{
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int i;
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/* Fill in list of supported UARTs */
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for (i = 0; i < config->nr_tty; i++) {
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switch (config->tty_map[i]) {
|
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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);
|
||||
|
|
|
|||
Loading…
Reference in a new issue