/*
* 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 <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 */
/* 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 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,
},
},
[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,
};
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 = "max1238",
.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),
},
};
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,
};
/* Patch posted by Eric Miao <eric.miao@marvell.com> will remove
* the need for these functions.
*/
static void spi1control(u32 command)
{
gpio_set_value(24, command & PXA2XX_CS_ASSERT ? 0 : 1);
};
static void spi3control(u32 command)
{
gpio_set_value(39, command & PXA2XX_CS_ASSERT ? 0 : 1);
};
static struct pxa2xx_spi_chip staccel_chip_info = {
.tx_threshold = 8,
.rx_threshold = 8,
.dma_burst_size = 8,
.timeout = 235,
.cs_control = spi1control,
};
static struct pxa2xx_spi_chip cc2420_info = {
.tx_threshold = 8,
.rx_threshold = 8,
.dma_burst_size = 8,
.timeout = 235,
.cs_control = spi3control,
};
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,
};
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));
/* SPI chip select directions - all other directions should
* be handled by drivers.*/
gpio_direction_output(37, 0);
gpio_direction_output(24, 0);
gpio_direction_output(39, 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
