| /* |
| * 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/module.h> |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/platform_device.h> |
| #include <linux/sysdev.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/spi/spi.h> |
| #include <linux/spi/ads7846.h> |
| #include <asm/arch/pxa2xx_spi.h> |
| |
| #include <asm/setup.h> |
| #include <asm/memory.h> |
| #include <asm/mach-types.h> |
| #include <asm/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 <asm/arch/pxa-regs.h> |
| #include <asm/arch/lubbock.h> |
| #include <asm/arch/udc.h> |
| #include <asm/arch/irda.h> |
| #include <asm/arch/pxafb.h> |
| #include <asm/arch/mmc.h> |
| |
| #include "generic.h" |
| |
| |
| #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080) |
| |
| 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 unsigned long lubbock_irq_enabled; |
| |
| static void lubbock_mask_irq(unsigned int irq) |
| { |
| int lubbock_irq = (irq - LUBBOCK_IRQ(0)); |
| LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq)); |
| } |
| |
| static void lubbock_unmask_irq(unsigned int irq) |
| { |
| int lubbock_irq = (irq - LUBBOCK_IRQ(0)); |
| /* the irq can be acknowledged only if deasserted, so it's done here */ |
| LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq); |
| LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq)); |
| } |
| |
| static struct irq_chip lubbock_irq_chip = { |
| .name = "FPGA", |
| .ack = lubbock_mask_irq, |
| .mask = lubbock_mask_irq, |
| .unmask = lubbock_unmask_irq, |
| }; |
| |
| static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc) |
| { |
| unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled; |
| do { |
| GEDR(0) = GPIO_bit(0); /* clear our parent irq */ |
| if (likely(pending)) { |
| irq = LUBBOCK_IRQ(0) + __ffs(pending); |
| desc = irq_desc + irq; |
| desc_handle_irq(irq, desc); |
| } |
| pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled; |
| } while (pending); |
| } |
| |
| static void __init lubbock_init_irq(void) |
| { |
| int irq; |
| |
| pxa_init_irq(); |
| |
| /* setup extra lubbock irqs */ |
| for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) { |
| set_irq_chip(irq, &lubbock_irq_chip); |
| set_irq_handler(irq, handle_level_irq); |
| set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); |
| } |
| |
| set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler); |
| set_irq_type(IRQ_GPIO(0), IRQT_FALLING); |
| } |
| |
| #ifdef CONFIG_PM |
| |
| static int lubbock_irq_resume(struct sys_device *dev) |
| { |
| LUB_IRQ_MASK_EN = lubbock_irq_enabled; |
| return 0; |
| } |
| |
| static struct sysdev_class lubbock_irq_sysclass = { |
| set_kset_name("cpld_irq"), |
| .resume = lubbock_irq_resume, |
| }; |
| |
| static struct sys_device lubbock_irq_device = { |
| .cls = &lubbock_irq_sysclass, |
| }; |
| |
| static int __init lubbock_irq_device_init(void) |
| { |
| int ret = sysdev_class_register(&lubbock_irq_sysclass); |
| if (ret == 0) |
| ret = sysdev_register(&lubbock_irq_device); |
| return ret; |
| } |
| |
| device_initcall(lubbock_irq_device_init); |
| |
| #endif |
| |
| 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 platform_device lub_audio_device = { |
| .name = "pxa2xx-ac97", |
| .id = -1, |
| }; |
| |
| 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 platform_device sa1111_device = { |
| .name = "sa1111", |
| .id = -1, |
| .num_resources = ARRAY_SIZE(sa1111_resources), |
| .resource = sa1111_resources, |
| }; |
| |
| 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, |
| }, |
| [2] = { |
| .name = "smc91x-attrib", |
| .start = 0x0e000000, |
| .end = 0x0e0fffff, |
| .flags = IORESOURCE_MEM, |
| }, |
| }; |
| |
| /* 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 resource pxa_ssp_resources[] = { |
| [0] = { |
| .start = __PREG(SSCR0_P(1)), |
| .end = __PREG(SSCR0_P(1)) + 0x14, |
| .flags = IORESOURCE_MEM, |
| }, |
| [1] = { |
| .start = IRQ_SSP, |
| .end = IRQ_SSP, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct pxa2xx_spi_master pxa_ssp_master_info = { |
| .ssp_type = PXA25x_SSP, |
| .clock_enable = CKEN_SSP, |
| .num_chipselect = 0, |
| }; |
| |
| static struct platform_device pxa_ssp = { |
| .name = "pxa2xx-spi", |
| .id = 1, |
| .resource = pxa_ssp_resources, |
| .num_resources = ARRAY_SIZE(pxa_ssp_resources), |
| .dev = { |
| .platform_data = &pxa_ssp_master_info, |
| }, |
| }; |
| |
| 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 platform_device smc91x_device = { |
| .name = "smc91x", |
| .id = -1, |
| .num_resources = ARRAY_SIZE(smc91x_resources), |
| .resource = smc91x_resources, |
| }; |
| |
| 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 platform_device *devices[] __initdata = { |
| &sa1111_device, |
| &lub_audio_device, |
| &smc91x_device, |
| &lubbock_flash_device[0], |
| &lubbock_flash_device[1], |
| &pxa_ssp, |
| }; |
| |
| 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, |
| .lccr0 = LCCR0_SDS, |
| .lccr3 = LCCR3_PCP | LCCR3_Acb(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) |
| { |
| /* setup GPIO for PXA25x MMC controller */ |
| pxa_gpio_mode(GPIO6_MMCCLK_MD); |
| pxa_gpio_mode(GPIO8_MMCCS0_MD); |
| |
| /* 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, |
| IRQF_SAMPLE_RANDOM, "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 = 1, |
| .init = lubbock_mci_init, |
| .get_ro = lubbock_mci_get_ro, |
| .exit = lubbock_mci_exit, |
| }; |
| |
| 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; |
| } |
| local_irq_restore(flags); |
| } |
| |
| static struct pxaficp_platform_data lubbock_ficp_platform_data = { |
| .transceiver_cap = IR_SIRMODE | IR_FIRMODE, |
| .transceiver_mode = lubbock_irda_transceiver_mode, |
| }; |
| |
| static void __init lubbock_init(void) |
| { |
| int flashboot = (LUB_CONF_SWITCHES & 1); |
| |
| pxa_set_udc_info(&udc_info); |
| set_pxa_fb_info(&sharp_lm8v31); |
| pxa_set_mci_info(&lubbock_mci_platform_data); |
| pxa_set_ficp_info(&lubbock_ficp_platform_data); |
| |
| lubbock_flash_data[0].width = lubbock_flash_data[1].width = |
| (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)); |
| |
| 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) |
| { |
| pxa_map_io(); |
| iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc)); |
| |
| /* SSP data pins */ |
| pxa_gpio_mode(GPIO23_SCLK_MD); |
| pxa_gpio_mode(GPIO25_STXD_MD); |
| pxa_gpio_mode(GPIO26_SRXD_MD); |
| |
| /* This enables the BTUART */ |
| pxa_gpio_mode(GPIO42_BTRXD_MD); |
| pxa_gpio_mode(GPIO43_BTTXD_MD); |
| pxa_gpio_mode(GPIO44_BTCTS_MD); |
| pxa_gpio_mode(GPIO45_BTRTS_MD); |
| |
| /* This is for the SMC chip select */ |
| pxa_gpio_mode(GPIO79_nCS_3_MD); |
| |
| /* setup sleep mode values */ |
| PWER = 0x00000002; |
| PFER = 0x00000000; |
| PRER = 0x00000002; |
| PGSR0 = 0x00008000; |
| PGSR1 = 0x003F0202; |
| PGSR2 = 0x0001C000; |
| PCFR |= PCFR_OPDE; |
| } |
| |
| MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)") |
| /* Maintainer: MontaVista Software Inc. */ |
| .phys_io = 0x40000000, |
| .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc, |
| .map_io = lubbock_map_io, |
| .init_irq = lubbock_init_irq, |
| .timer = &pxa_timer, |
| .init_machine = lubbock_init, |
| MACHINE_END |