/* * 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/smc91x.h> #include <linux/spi/spi.h> #include <linux/spi/ads7846.h> #include <mach/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/pxa-regs.h> #include <mach/pxa2xx-regs.h> #include <mach/mfp-pxa25x.h> #include <mach/audio.h> #include <mach/lubbock.h> #include <mach/udc.h> #include <mach/irda.h> #include <mach/pxafb.h> #include <mach/mmc.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, /* LCD - 16bpp DSTN */ GPIO58_LCD_LDD_0, GPIO59_LCD_LDD_1, GPIO60_LCD_LDD_2, GPIO61_LCD_LDD_3, GPIO62_LCD_LDD_4, GPIO63_LCD_LDD_5, GPIO64_LCD_LDD_6, GPIO65_LCD_LDD_7, GPIO66_LCD_LDD_8, GPIO67_LCD_LDD_9, GPIO68_LCD_LDD_10, GPIO69_LCD_LDD_11, GPIO70_LCD_LDD_12, GPIO71_LCD_LDD_13, GPIO72_LCD_LDD_14, GPIO73_LCD_LDD_15, GPIO74_LCD_FCLK, GPIO75_LCD_LCLK, GPIO76_LCD_PCLK, /* 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_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); generic_handle_irq(irq); } pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled; } while (pending); } static void __init lubbock_init_irq(void) { int irq; pxa25x_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), IRQ_TYPE_EDGE_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 = { .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 = -ENODEV; if (machine_is_lubbock()) { 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 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, }; /* 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 platform_device *devices[] __initdata = { &sa1111_device, &smc91x_device, &lubbock_flash_device[0], &lubbock_flash_device[1], }; 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, 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; } pxa2xx_transceiver_mode(dev, mode); 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); pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config)); clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL); 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); pxa_set_ac97_info(NULL); 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)); 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) { pxa_map_io(); iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc)); 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