/* * linux/arch/arm/mach-pxa/imote2.c * * Author: Ed C. Epp * Created: Nov 05, 2002 * Copyright: Intel Corp. * * Modified 2008: Jonathan Cameron * * The Imote2 is a wireless sensor node platform sold * by Crossbow (www.xbow.com). */ #include <linux/init.h> #include <linux/device.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> #include <linux/platform_device.h> #include <linux/regulator/machine.h> #include <linux/gpio.h> #include <linux/leds.h> #include <linux/spi/spi.h> #include <linux/i2c.h> #include <linux/mfd/da903x.h> #include <linux/sht15.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <asm/mach/flash.h> #include <mach/pxa27x.h> #include <plat/i2c.h> #include <mach/udc.h> #include <mach/mmc.h> #include <mach/pxa2xx_spi.h> #include <mach/pxa27x-udc.h> #include "devices.h" #include "generic.h" static unsigned long imote2_pin_config[] __initdata = { /* Device Identification for wakeup*/ GPIO102_GPIO, /* Button */ GPIO91_GPIO, /* DA9030 */ GPIO1_GPIO, /* MMC */ GPIO32_MMC_CLK, GPIO112_MMC_CMD, GPIO92_MMC_DAT_0, GPIO109_MMC_DAT_1, GPIO110_MMC_DAT_2, GPIO111_MMC_DAT_3, /* 802.15.4 radio - driver out of mainline */ GPIO22_GPIO, /* CC_RSTN */ GPIO114_GPIO, /* CC_FIFO */ GPIO116_GPIO, /* CC_CCA */ GPIO0_GPIO, /* CC_FIFOP */ GPIO16_GPIO, /* CCSFD */ GPIO39_GPIO, /* CSn */ GPIO115_GPIO, /* Power enable */ /* I2C */ GPIO117_I2C_SCL, GPIO118_I2C_SDA, /* SSP 3 - 802.15.4 radio */ GPIO39_GPIO, /* Chip Select */ GPIO34_SSP3_SCLK, GPIO35_SSP3_TXD, GPIO41_SSP3_RXD, /* SSP 2 - to daughter boards */ GPIO37_GPIO, /* Chip Select */ GPIO36_SSP2_SCLK, GPIO38_SSP2_TXD, GPIO11_SSP2_RXD, /* SSP 1 - to daughter boards */ GPIO24_GPIO, /* Chip Select */ GPIO23_SSP1_SCLK, GPIO25_SSP1_TXD, GPIO26_SSP1_RXD, /* BTUART Basic Connector*/ GPIO42_BTUART_RXD, GPIO43_BTUART_TXD, GPIO44_BTUART_CTS, GPIO45_BTUART_RTS, /* STUART Serial console via debug board*/ GPIO46_STUART_RXD, GPIO47_STUART_TXD, /* Basic sensor board */ GPIO96_GPIO, /* accelerometer interrupt */ GPIO99_GPIO, /* ADC interrupt */ /* SHT15 */ GPIO100_GPIO, GPIO98_GPIO, /* Connector pins specified as gpios */ GPIO94_GPIO, /* large basic connector pin 14 */ GPIO10_GPIO, /* large basic connector pin 23 */ /* LEDS */ GPIO103_GPIO, /* red led */ GPIO104_GPIO, /* green led */ GPIO105_GPIO, /* blue led */ }; static struct sht15_platform_data platform_data_sht15 = { .gpio_data = 100, .gpio_sck = 98, }; static struct platform_device sht15 = { .name = "sht15", .id = -1, .dev = { .platform_data = &platform_data_sht15, }, }; static struct regulator_consumer_supply imote2_sensor_3_con[] = { { .dev = &sht15.dev, .supply = "vcc", }, }; static struct gpio_led imote2_led_pins[] = { { .name = "imote2:red", .gpio = 103, .active_low = 1, }, { .name = "imote2:green", .gpio = 104, .active_low = 1, }, { .name = "imote2:blue", .gpio = 105, .active_low = 1, }, }; static struct gpio_led_platform_data imote2_led_data = { .num_leds = ARRAY_SIZE(imote2_led_pins), .leds = imote2_led_pins, }; static struct platform_device imote2_leds = { .name = "leds-gpio", .id = -1, .dev = { .platform_data = &imote2_led_data, }, }; /* Reverse engineered partly from Platformx drivers */ enum imote2_ldos{ vcc_vref, vcc_cc2420, vcc_mica, vcc_bt, /* The two voltages available to sensor boards */ vcc_sensor_1_8, vcc_sensor_3, vcc_sram_ext, /* directly connected to the pxa271 */ vcc_pxa_pll, vcc_pxa_usim, /* Reference voltage for certain gpios */ vcc_pxa_mem, vcc_pxa_flash, vcc_pxa_core, /*Dc-Dc buck not yet supported */ vcc_lcd, vcc_bb, vcc_bbio, vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/ }; /* The values of the various regulator constraints are obviously dependent * on exactly what is wired to each ldo. Unfortunately this information is * not generally available. More information has been requested from Xbow * but as of yet they haven't been forthcoming. * * Some of these are clearly Stargate 2 related (no way of plugging * in an lcd on the IM2 for example!). */ static struct regulator_init_data imote2_ldo_init_data[] = { [vcc_bbio] = { .constraints = { /* board default 1.8V */ .name = "vcc_bbio", .min_uV = 1800000, .max_uV = 1800000, }, }, [vcc_bb] = { .constraints = { /* board default 2.8V */ .name = "vcc_bb", .min_uV = 2700000, .max_uV = 3000000, }, }, [vcc_pxa_flash] = { .constraints = {/* default is 1.8V */ .name = "vcc_pxa_flash", .min_uV = 1800000, .max_uV = 1800000, }, }, [vcc_cc2420] = { /* also vcc_io */ .constraints = { /* board default is 2.8V */ .name = "vcc_cc2420", .min_uV = 2700000, .max_uV = 3300000, }, }, [vcc_vref] = { /* Reference for what? */ .constraints = { /* default 1.8V */ .name = "vcc_vref", .min_uV = 1800000, .max_uV = 1800000, }, }, [vcc_sram_ext] = { .constraints = { /* default 2.8V */ .name = "vcc_sram_ext", .min_uV = 2800000, .max_uV = 2800000, }, }, [vcc_mica] = { .constraints = { /* default 2.8V */ .name = "vcc_mica", .min_uV = 2800000, .max_uV = 2800000, }, }, [vcc_bt] = { .constraints = { /* default 2.8V */ .name = "vcc_bt", .min_uV = 2800000, .max_uV = 2800000, }, }, [vcc_lcd] = { .constraints = { /* default 2.8V */ .name = "vcc_lcd", .min_uV = 2700000, .max_uV = 3300000, }, }, [vcc_io] = { /* Same or higher than everything * bar vccbat and vccusb */ .constraints = { /* default 2.8V */ .name = "vcc_io", .min_uV = 2692000, .max_uV = 3300000, }, }, [vcc_sensor_1_8] = { .constraints = { /* default 1.8V */ .name = "vcc_sensor_1_8", .min_uV = 1800000, .max_uV = 1800000, }, }, [vcc_sensor_3] = { /* curiously default 2.8V */ .constraints = { .name = "vcc_sensor_3", .min_uV = 2800000, .max_uV = 3000000, }, .num_consumer_supplies = ARRAY_SIZE(imote2_sensor_3_con), .consumer_supplies = imote2_sensor_3_con, }, [vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/ .constraints = { .name = "vcc_pxa_pll", .min_uV = 1170000, .max_uV = 1430000, }, }, [vcc_pxa_usim] = { .constraints = { /* default 1.8V */ .name = "vcc_pxa_usim", .min_uV = 1710000, .max_uV = 2160000, }, }, [vcc_pxa_mem] = { .constraints = { /* default 1.8V */ .name = "vcc_pxa_mem", .min_uV = 1800000, .max_uV = 1800000, }, }, }; static struct da903x_subdev_info imote2_da9030_subdevs[] = { { .name = "da903x-regulator", .id = DA9030_ID_LDO2, .platform_data = &imote2_ldo_init_data[vcc_bbio], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO3, .platform_data = &imote2_ldo_init_data[vcc_bb], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO4, .platform_data = &imote2_ldo_init_data[vcc_pxa_flash], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO5, .platform_data = &imote2_ldo_init_data[vcc_cc2420], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO6, .platform_data = &imote2_ldo_init_data[vcc_vref], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO7, .platform_data = &imote2_ldo_init_data[vcc_sram_ext], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO8, .platform_data = &imote2_ldo_init_data[vcc_mica], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO9, .platform_data = &imote2_ldo_init_data[vcc_bt], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO10, .platform_data = &imote2_ldo_init_data[vcc_sensor_1_8], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO11, .platform_data = &imote2_ldo_init_data[vcc_sensor_3], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO12, .platform_data = &imote2_ldo_init_data[vcc_lcd], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO15, .platform_data = &imote2_ldo_init_data[vcc_pxa_pll], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO17, .platform_data = &imote2_ldo_init_data[vcc_pxa_usim], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO18, .platform_data = &imote2_ldo_init_data[vcc_io], }, { .name = "da903x-regulator", .id = DA9030_ID_LDO19, .platform_data = &imote2_ldo_init_data[vcc_pxa_mem], }, }; static struct da903x_platform_data imote2_da9030_pdata = { .num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs), .subdevs = imote2_da9030_subdevs, }; /* As the the imote2 doesn't currently have a conventional SD slot * there is no option to hotplug cards, making all this rather simple */ static int imote2_mci_get_ro(struct device *dev) { return 0; } /* Rather simple case as hotplugging not possible */ static struct pxamci_platform_data imote2_mci_platform_data = { .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */ .get_ro = imote2_mci_get_ro, .gpio_card_detect = -1, .gpio_card_ro = -1, .gpio_power = -1, }; static struct mtd_partition imote2flash_partitions[] = { { .name = "Bootloader", .size = 0x00040000, .offset = 0, .mask_flags = MTD_WRITEABLE, }, { .name = "Kernel", .size = 0x00200000, .offset = 0x00040000, .mask_flags = 0, }, { .name = "Filesystem", .size = 0x01DC0000, .offset = 0x00240000, .mask_flags = 0, }, }; static struct resource flash_resources = { .start = PXA_CS0_PHYS, .end = PXA_CS0_PHYS + SZ_32M - 1, .flags = IORESOURCE_MEM, }; static struct flash_platform_data imote2_flash_data = { .map_name = "cfi_probe", .parts = imote2flash_partitions, .nr_parts = ARRAY_SIZE(imote2flash_partitions), .name = "PXA27xOnChipROM", .width = 2, }; static struct platform_device imote2_flash_device = { .name = "pxa2xx-flash", .id = 0, .dev = { .platform_data = &imote2_flash_data, }, .resource = &flash_resources, .num_resources = 1, }; /* Some of the drivers here are out of kernel at the moment (parts of IIO) * and it may be a while before they are in the mainline. */ static struct i2c_board_info __initdata imote2_i2c_board_info[] = { { /* UCAM sensor board */ .type = "max1239", .addr = 0x35, }, { /* ITS400 Sensor board only */ .type = "max1363", .addr = 0x34, /* Through a nand gate - Also beware, on V2 sensor board the * pull up resistors are missing. */ .irq = IRQ_GPIO(99), }, { /* ITS400 Sensor board only */ .type = "tsl2561", .addr = 0x49, /* Through a nand gate - Also beware, on V2 sensor board the * pull up resistors are missing. */ .irq = IRQ_GPIO(99), }, { /* ITS400 Sensor board only */ .type = "tmp175", .addr = 0x4A, .irq = IRQ_GPIO(96), }, { /* IMB400 Multimedia board */ .type = "wm8940", .addr = 0x1A, }, }; static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = { { .type = "da9030", .addr = 0x49, .platform_data = &imote2_da9030_pdata, .irq = gpio_to_irq(1), }, }; static struct pxa2xx_spi_master pxa_ssp_master_0_info = { .num_chipselect = 1, }; static struct pxa2xx_spi_master pxa_ssp_master_1_info = { .num_chipselect = 1, }; static struct pxa2xx_spi_master pxa_ssp_master_2_info = { .num_chipselect = 1, }; static struct pxa2xx_spi_chip staccel_chip_info = { .tx_threshold = 8, .rx_threshold = 8, .dma_burst_size = 8, .timeout = 235, .gpio_cs = 24, }; static struct pxa2xx_spi_chip cc2420_info = { .tx_threshold = 8, .rx_threshold = 8, .dma_burst_size = 8, .timeout = 235, .gpio_cs = 39, }; static struct spi_board_info spi_board_info[] __initdata = { { /* Driver in IIO */ .modalias = "lis3l02dq", .max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */ .bus_num = 1, .chip_select = 0, .controller_data = &staccel_chip_info, .irq = IRQ_GPIO(96), }, { /* Driver out of kernel as it needs considerable rewriting */ .modalias = "cc2420", .max_speed_hz = 6500000, .bus_num = 3, .chip_select = 0, .controller_data = &cc2420_info, }, }; static void im2_udc_command(int cmd) { switch (cmd) { case PXA2XX_UDC_CMD_CONNECT: UP2OCR |= UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE; break; case PXA2XX_UDC_CMD_DISCONNECT: UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE); break; } } static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = { .udc_command = im2_udc_command, }; static struct platform_device *imote2_devices[] = { &imote2_flash_device, &imote2_leds, &sht15, }; static struct i2c_pxa_platform_data i2c_pwr_pdata = { .fast_mode = 1, }; static struct i2c_pxa_platform_data i2c_pdata = { .fast_mode = 1, }; static void __init imote2_init(void) { pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config)); pxa_set_ffuart_info(NULL); pxa_set_btuart_info(NULL); pxa_set_stuart_info(NULL); /* SPI chip select directions - all other directions should * be handled by drivers.*/ gpio_direction_output(37, 0); platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices)); pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info); pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info); pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info); spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); i2c_register_board_info(0, imote2_i2c_board_info, ARRAY_SIZE(imote2_i2c_board_info)); i2c_register_board_info(1, imote2_pwr_i2c_board_info, ARRAY_SIZE(imote2_pwr_i2c_board_info)); pxa27x_set_i2c_power_info(&i2c_pwr_pdata); pxa_set_i2c_info(&i2c_pdata); pxa_set_mci_info(&imote2_mci_platform_data); pxa_set_udc_info(&imote2_udc_info); } MACHINE_START(INTELMOTE2, "IMOTE 2") .phys_io = 0x40000000, .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc, .map_io = pxa_map_io, .init_irq = pxa27x_init_irq, .timer = &pxa_timer, .init_machine = imote2_init, .boot_params = 0xA0000100, MACHINE_END