// SPDX-License-Identifier: GPL-2.0-only /* * 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. */ #include <linux/clkdev.h> #include <linux/gpio.h> #include <linux/gpio/gpio-reg.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 <linux/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 "pxa25x.h" #include <mach/audio.h> #include <mach/lubbock.h> #include "udc.h" #include <linux/platform_data/irda-pxaficp.h> #include <linux/platform_data/video-pxafb.h> #include <linux/platform_data/mmc-pxamci.h> #include "pm.h" #include <mach/smemc.h> #include "generic.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, /* SA1111 chip */ GPIO11_3_6MHz, /* wakeup */ GPIO1_GPIO | WAKEUP_ON_EDGE_RISE, }; #define LUB_HEXLED __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010) void lubbock_set_hexled(uint32_t value) { LUB_HEXLED = value; } static struct gpio_chip *lubbock_misc_wr_gc; static void lubbock_set_misc_wr(unsigned int mask, unsigned int set) { unsigned long m = mask, v = set; lubbock_misc_wr_gc->set_multiple(lubbock_misc_wr_gc, &m, &v); } 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 }; /* GPIOs for SA1111 PCMCIA */ static struct gpiod_lookup_table sa1111_pcmcia_gpio_table = { .dev_id = "1800", .table = { { "sa1111", 0, "a0vpp", GPIO_ACTIVE_HIGH }, { "sa1111", 1, "a1vpp", GPIO_ACTIVE_HIGH }, { "sa1111", 2, "a0vcc", GPIO_ACTIVE_HIGH }, { "sa1111", 3, "a1vcc", GPIO_ACTIVE_HIGH }, { "lubbock", 14, "b0vcc", GPIO_ACTIVE_HIGH }, { "lubbock", 15, "b1vcc", GPIO_ACTIVE_HIGH }, { }, }, }; static void lubbock_init_pcmcia(void) { struct clk *clk; gpiod_add_lookup_table(&sa1111_pcmcia_gpio_table); /* Add an alias for the SA1111 PCMCIA clock */ clk = clk_get_sys("pxa2xx-pcmcia", NULL); if (!IS_ERR(clk)) { clkdev_create(clk, NULL, "1800"); clk_put(clk); } } 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_controller 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 irq_handler_t mmc_detect_int; static void *mmc_detect_int_data; static struct timer_list mmc_timer; static void lubbock_mmc_poll(struct timer_list *unused) { 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, mmc_detect_int_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; mmc_detect_int_data = data; timer_setup(&mmc_timer, lubbock_mmc_poll, 0); 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, }; static void lubbock_irda_transceiver_mode(struct device *dev, int mode) { unsigned long flags; local_irq_save(flags); if (mode & IR_SIRMODE) { lubbock_set_misc_wr(BIT(4), 0); } else if (mode & IR_FIRMODE) { lubbock_set_misc_wr(BIT(4), BIT(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)); lubbock_misc_wr_gc = gpio_reg_init(NULL, (void *)&LUB_MISC_WR, -1, 16, "lubbock", 0, LUB_MISC_WR, NULL, NULL, NULL); if (IS_ERR(lubbock_misc_wr_gc)) { pr_err("Lubbock: unable to register lubbock GPIOs: %ld\n", PTR_ERR(lubbock_misc_wr_gc)); lubbock_misc_wr_gc = NULL; } pxa_set_ffuart_info(NULL); pxa_set_btuart_info(NULL); pxa_set_stuart_info(NULL); lubbock_init_pcmcia(); 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