diff options
Diffstat (limited to 'kernel/arch/arm/mach-pxa/lubbock.c')
| -rw-r--r-- | kernel/arch/arm/mach-pxa/lubbock.c | 606 |
1 files changed, 606 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-pxa/lubbock.c b/kernel/arch/arm/mach-pxa/lubbock.c new file mode 100644 index 000000000..4ac9ab80d --- /dev/null +++ b/kernel/arch/arm/mach-pxa/lubbock.c @@ -0,0 +1,606 @@ +/* + * linux/arch/arm/mach-pxa/lubbock.c + * + * Support for the Intel DBPXA250 Development Platform. + * + * Author: Nicolas Pitre + * Created: Jun 15, 2001 + * Copyright: MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/gpio.h> +#include <linux/gpio/machine.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/syscore_ops.h> +#include <linux/major.h> +#include <linux/fb.h> +#include <linux/interrupt.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/smc91x.h> +#include <linux/slab.h> +#include <linux/leds.h> + +#include <linux/spi/spi.h> +#include <linux/spi/ads7846.h> +#include <linux/spi/pxa2xx_spi.h> + +#include <asm/setup.h> +#include <asm/memory.h> +#include <asm/mach-types.h> +#include <mach/hardware.h> +#include <asm/irq.h> +#include <asm/sizes.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> +#include <asm/mach/flash.h> + +#include <asm/hardware/sa1111.h> + +#include <mach/pxa25x.h> +#include <mach/audio.h> +#include <mach/lubbock.h> +#include <mach/udc.h> +#include <linux/platform_data/irda-pxaficp.h> +#include <linux/platform_data/video-pxafb.h> +#include <linux/platform_data/mmc-pxamci.h> +#include <mach/pm.h> +#include <mach/smemc.h> + +#include "generic.h" +#include "clock.h" +#include "devices.h" + +static unsigned long lubbock_pin_config[] __initdata = { + GPIO15_nCS_1, /* CS1 - Flash */ + GPIO78_nCS_2, /* CS2 - Baseboard FGPA */ + GPIO79_nCS_3, /* CS3 - SMC ethernet */ + GPIO80_nCS_4, /* CS4 - SA1111 */ + + /* SSP data pins */ + GPIO23_SSP1_SCLK, + GPIO25_SSP1_TXD, + GPIO26_SSP1_RXD, + + /* AC97 */ + GPIO28_AC97_BITCLK, + GPIO29_AC97_SDATA_IN_0, + GPIO30_AC97_SDATA_OUT, + GPIO31_AC97_SYNC, + + /* LCD - 16bpp DSTN */ + GPIOxx_LCD_DSTN_16BPP, + + /* BTUART */ + GPIO42_BTUART_RXD, + GPIO43_BTUART_TXD, + GPIO44_BTUART_CTS, + GPIO45_BTUART_RTS, + + /* PC Card */ + GPIO48_nPOE, + GPIO49_nPWE, + GPIO50_nPIOR, + GPIO51_nPIOW, + GPIO52_nPCE_1, + GPIO53_nPCE_2, + GPIO54_nPSKTSEL, + GPIO55_nPREG, + GPIO56_nPWAIT, + GPIO57_nIOIS16, + + /* MMC */ + GPIO6_MMC_CLK, + GPIO8_MMC_CS0, + + /* wakeup */ + GPIO1_GPIO | WAKEUP_ON_EDGE_RISE, +}; + +#define LUB_HEXLED __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010) +#define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080) + +void lubbock_set_hexled(uint32_t value) +{ + LUB_HEXLED = value; +} + +void lubbock_set_misc_wr(unsigned int mask, unsigned int set) +{ + unsigned long flags; + + local_irq_save(flags); + LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask); + local_irq_restore(flags); +} +EXPORT_SYMBOL(lubbock_set_misc_wr); + +static int lubbock_udc_is_connected(void) +{ + return (LUB_MISC_RD & (1 << 9)) == 0; +} + +static struct pxa2xx_udc_mach_info udc_info __initdata = { + .udc_is_connected = lubbock_udc_is_connected, + // no D+ pullup; lubbock can't connect/disconnect in software +}; + +static struct resource sa1111_resources[] = { + [0] = { + .start = 0x10000000, + .end = 0x10001fff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = LUBBOCK_SA1111_IRQ, + .end = LUBBOCK_SA1111_IRQ, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct sa1111_platform_data sa1111_info = { + .irq_base = LUBBOCK_SA1111_IRQ_BASE, + .disable_devs = SA1111_DEVID_SAC, +}; + +static struct platform_device sa1111_device = { + .name = "sa1111", + .id = -1, + .num_resources = ARRAY_SIZE(sa1111_resources), + .resource = sa1111_resources, + .dev = { + .platform_data = &sa1111_info, + }, +}; + +/* ADS7846 is connected through SSP ... and if your board has J5 populated, + * you can select it to replace the ucb1400 by switching the touchscreen cable + * (to J5) and poking board registers (as done below). Else it's only useful + * for the temperature sensors. + */ +static struct pxa2xx_spi_master pxa_ssp_master_info = { + .num_chipselect = 1, +}; + +static int lubbock_ads7846_pendown_state(void) +{ + /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */ + return 0; +} + +static struct ads7846_platform_data ads_info = { + .model = 7846, + .vref_delay_usecs = 100, /* internal, no cap */ + .get_pendown_state = lubbock_ads7846_pendown_state, + // .x_plate_ohms = 500, /* GUESS! */ + // .y_plate_ohms = 500, /* GUESS! */ +}; + +static void ads7846_cs(u32 command) +{ + static const unsigned TS_nCS = 1 << 11; + lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS); +} + +static struct pxa2xx_spi_chip ads_hw = { + .tx_threshold = 1, + .rx_threshold = 2, + .cs_control = ads7846_cs, +}; + +static struct spi_board_info spi_board_info[] __initdata = { { + .modalias = "ads7846", + .platform_data = &ads_info, + .controller_data = &ads_hw, + .irq = LUBBOCK_BB_IRQ, + .max_speed_hz = 120000 /* max sample rate at 3V */ + * 26 /* command + data + overhead */, + .bus_num = 1, + .chip_select = 0, +}, +}; + +static struct resource smc91x_resources[] = { + [0] = { + .name = "smc91x-regs", + .start = 0x0c000c00, + .end = 0x0c0fffff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = LUBBOCK_ETH_IRQ, + .end = LUBBOCK_ETH_IRQ, + .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, + }, + [2] = { + .name = "smc91x-attrib", + .start = 0x0e000000, + .end = 0x0e0fffff, + .flags = IORESOURCE_MEM, + }, +}; + +static struct smc91x_platdata lubbock_smc91x_info = { + .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2, +}; + +static struct platform_device smc91x_device = { + .name = "smc91x", + .id = -1, + .num_resources = ARRAY_SIZE(smc91x_resources), + .resource = smc91x_resources, + .dev = { + .platform_data = &lubbock_smc91x_info, + }, +}; + +static struct resource flash_resources[] = { + [0] = { + .start = 0x00000000, + .end = SZ_64M - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = 0x04000000, + .end = 0x04000000 + SZ_64M - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct mtd_partition lubbock_partitions[] = { + { + .name = "Bootloader", + .size = 0x00040000, + .offset = 0, + .mask_flags = MTD_WRITEABLE /* force read-only */ + },{ + .name = "Kernel", + .size = 0x00100000, + .offset = 0x00040000, + },{ + .name = "Filesystem", + .size = MTDPART_SIZ_FULL, + .offset = 0x00140000 + } +}; + +static struct flash_platform_data lubbock_flash_data[2] = { + { + .map_name = "cfi_probe", + .parts = lubbock_partitions, + .nr_parts = ARRAY_SIZE(lubbock_partitions), + }, { + .map_name = "cfi_probe", + .parts = NULL, + .nr_parts = 0, + } +}; + +static struct platform_device lubbock_flash_device[2] = { + { + .name = "pxa2xx-flash", + .id = 0, + .dev = { + .platform_data = &lubbock_flash_data[0], + }, + .resource = &flash_resources[0], + .num_resources = 1, + }, + { + .name = "pxa2xx-flash", + .id = 1, + .dev = { + .platform_data = &lubbock_flash_data[1], + }, + .resource = &flash_resources[1], + .num_resources = 1, + }, +}; + +static struct resource lubbock_cplds_resources[] = { + [0] = { + .start = LUBBOCK_FPGA_PHYS + 0xc0, + .end = LUBBOCK_FPGA_PHYS + 0xe0 - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = PXA_GPIO_TO_IRQ(0), + .end = PXA_GPIO_TO_IRQ(0), + .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE, + }, + [2] = { + .start = LUBBOCK_IRQ(0), + .end = LUBBOCK_IRQ(6), + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device lubbock_cplds_device = { + .name = "pxa_cplds_irqs", + .id = -1, + .resource = &lubbock_cplds_resources[0], + .num_resources = 3, +}; + + +static struct platform_device *devices[] __initdata = { + &sa1111_device, + &smc91x_device, + &lubbock_flash_device[0], + &lubbock_flash_device[1], + &lubbock_cplds_device, +}; + +static struct pxafb_mode_info sharp_lm8v31_mode = { + .pixclock = 270000, + .xres = 640, + .yres = 480, + .bpp = 16, + .hsync_len = 1, + .left_margin = 3, + .right_margin = 3, + .vsync_len = 1, + .upper_margin = 0, + .lower_margin = 0, + .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + .cmap_greyscale = 0, +}; + +static struct pxafb_mach_info sharp_lm8v31 = { + .modes = &sharp_lm8v31_mode, + .num_modes = 1, + .cmap_inverse = 0, + .cmap_static = 0, + .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL | + LCD_AC_BIAS_FREQ(255), +}; + +#define MMC_POLL_RATE msecs_to_jiffies(1000) + +static void lubbock_mmc_poll(unsigned long); +static irq_handler_t mmc_detect_int; + +static struct timer_list mmc_timer = { + .function = lubbock_mmc_poll, +}; + +static void lubbock_mmc_poll(unsigned long data) +{ + unsigned long flags; + + /* clear any previous irq state, then ... */ + local_irq_save(flags); + LUB_IRQ_SET_CLR &= ~(1 << 0); + local_irq_restore(flags); + + /* poll until mmc/sd card is removed */ + if (LUB_IRQ_SET_CLR & (1 << 0)) + mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE); + else { + (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data); + enable_irq(LUBBOCK_SD_IRQ); + } +} + +static irqreturn_t lubbock_detect_int(int irq, void *data) +{ + /* IRQ is level triggered; disable, and poll for removal */ + disable_irq(irq); + mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE); + + return mmc_detect_int(irq, data); +} + +static int lubbock_mci_init(struct device *dev, + irq_handler_t detect_int, + void *data) +{ + /* detect card insert/eject */ + mmc_detect_int = detect_int; + init_timer(&mmc_timer); + mmc_timer.data = (unsigned long) data; + return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int, + 0, "lubbock-sd-detect", data); +} + +static int lubbock_mci_get_ro(struct device *dev) +{ + return (LUB_MISC_RD & (1 << 2)) != 0; +} + +static void lubbock_mci_exit(struct device *dev, void *data) +{ + free_irq(LUBBOCK_SD_IRQ, data); + del_timer_sync(&mmc_timer); +} + +static struct pxamci_platform_data lubbock_mci_platform_data = { + .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, + .detect_delay_ms = 10, + .init = lubbock_mci_init, + .get_ro = lubbock_mci_get_ro, + .exit = lubbock_mci_exit, + .gpio_card_detect = -1, + .gpio_card_ro = -1, + .gpio_power = -1, +}; + +static void lubbock_irda_transceiver_mode(struct device *dev, int mode) +{ + unsigned long flags; + + local_irq_save(flags); + if (mode & IR_SIRMODE) { + LUB_MISC_WR &= ~(1 << 4); + } else if (mode & IR_FIRMODE) { + LUB_MISC_WR |= 1 << 4; + } + pxa2xx_transceiver_mode(dev, mode); + local_irq_restore(flags); +} + +static struct pxaficp_platform_data lubbock_ficp_platform_data = { + .gpio_pwdown = -1, + .transceiver_cap = IR_SIRMODE | IR_FIRMODE, + .transceiver_mode = lubbock_irda_transceiver_mode, +}; + +static void __init lubbock_init(void) +{ + int flashboot = (LUB_CONF_SWITCHES & 1); + + pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config)); + + pxa_set_ffuart_info(NULL); + pxa_set_btuart_info(NULL); + pxa_set_stuart_info(NULL); + + clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL); + pxa_set_udc_info(&udc_info); + pxa_set_fb_info(NULL, &sharp_lm8v31); + pxa_set_mci_info(&lubbock_mci_platform_data); + pxa_set_ficp_info(&lubbock_ficp_platform_data); + pxa_set_ac97_info(NULL); + + lubbock_flash_data[0].width = lubbock_flash_data[1].width = + (__raw_readl(BOOT_DEF) & 1) ? 2 : 4; + /* Compensate for the nROMBT switch which swaps the flash banks */ + printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n", + flashboot?"Flash":"ROM", flashboot); + + lubbock_flash_data[flashboot^1].name = "application-flash"; + lubbock_flash_data[flashboot].name = "boot-rom"; + (void) platform_add_devices(devices, ARRAY_SIZE(devices)); + + pxa2xx_set_spi_info(1, &pxa_ssp_master_info); + spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); +} + +static struct map_desc lubbock_io_desc[] __initdata = { + { /* CPLD */ + .virtual = LUBBOCK_FPGA_VIRT, + .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS), + .length = 0x00100000, + .type = MT_DEVICE + } +}; + +static void __init lubbock_map_io(void) +{ + pxa25x_map_io(); + iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc)); + + PCFR |= PCFR_OPDE; +} + +/* + * Driver for the 8 discrete LEDs available for general use: + * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays + * so be sure to not monkey with them here. + */ + +#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) +struct lubbock_led { + struct led_classdev cdev; + u8 mask; +}; + +/* + * The triggers lines up below will only be used if the + * LED triggers are compiled in. + */ +static const struct { + const char *name; + const char *trigger; +} lubbock_leds[] = { + { "lubbock:D28", "default-on", }, + { "lubbock:D27", "cpu0", }, + { "lubbock:D26", "heartbeat" }, + { "lubbock:D25", }, + { "lubbock:D24", }, + { "lubbock:D23", }, + { "lubbock:D22", }, + { "lubbock:D21", }, +}; + +static void lubbock_led_set(struct led_classdev *cdev, + enum led_brightness b) +{ + struct lubbock_led *led = container_of(cdev, + struct lubbock_led, cdev); + u32 reg = LUB_DISC_BLNK_LED; + + if (b != LED_OFF) + reg |= led->mask; + else + reg &= ~led->mask; + + LUB_DISC_BLNK_LED = reg; +} + +static enum led_brightness lubbock_led_get(struct led_classdev *cdev) +{ + struct lubbock_led *led = container_of(cdev, + struct lubbock_led, cdev); + u32 reg = LUB_DISC_BLNK_LED; + + return (reg & led->mask) ? LED_FULL : LED_OFF; +} + +static int __init lubbock_leds_init(void) +{ + int i; + + if (!machine_is_lubbock()) + return -ENODEV; + + /* All ON */ + LUB_DISC_BLNK_LED |= 0xff; + for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) { + struct lubbock_led *led; + + led = kzalloc(sizeof(*led), GFP_KERNEL); + if (!led) + break; + + led->cdev.name = lubbock_leds[i].name; + led->cdev.brightness_set = lubbock_led_set; + led->cdev.brightness_get = lubbock_led_get; + led->cdev.default_trigger = lubbock_leds[i].trigger; + led->mask = BIT(i); + + if (led_classdev_register(NULL, &led->cdev) < 0) { + kfree(led); + break; + } + } + + return 0; +} + +/* + * Since we may have triggers on any subsystem, defer registration + * until after subsystem_init. + */ +fs_initcall(lubbock_leds_init); +#endif + +MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)") + /* Maintainer: MontaVista Software Inc. */ + .map_io = lubbock_map_io, + .nr_irqs = LUBBOCK_NR_IRQS, + .init_irq = pxa25x_init_irq, + .handle_irq = pxa25x_handle_irq, + .init_time = pxa_timer_init, + .init_machine = lubbock_init, + .restart = pxa_restart, +MACHINE_END |