573 lines
13 KiB
C
573 lines
13 KiB
C
/*
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* linux/arch/arm/mach-pxa/imote2.c
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*
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* Author: Ed C. Epp
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* Created: Nov 05, 2002
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* Copyright: Intel Corp.
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*
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* Modified 2008: Jonathan Cameron
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*
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* The Imote2 is a wireless sensor node platform sold
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* by Crossbow (www.xbow.com).
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*/
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/machine.h>
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#include <linux/gpio.h>
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#include <linux/leds.h>
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#include <linux/spi/spi.h>
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#include <linux/i2c.h>
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#include <linux/mfd/da903x.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/flash.h>
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#include <mach/pxa27x.h>
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#include <mach/i2c.h>
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#include <mach/udc.h>
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#include <mach/mmc.h>
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#include <mach/pxa2xx_spi.h>
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#include <mach/pxa27x-udc.h>
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#include "devices.h"
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#include "generic.h"
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static unsigned long imote2_pin_config[] __initdata = {
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/* Device Identification for wakeup*/
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GPIO102_GPIO,
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/* Button */
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GPIO91_GPIO,
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/* DA9030 */
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GPIO1_GPIO,
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/* MMC */
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GPIO32_MMC_CLK,
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GPIO112_MMC_CMD,
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GPIO92_MMC_DAT_0,
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GPIO109_MMC_DAT_1,
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GPIO110_MMC_DAT_2,
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GPIO111_MMC_DAT_3,
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/* 802.15.4 radio - driver out of mainline */
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GPIO22_GPIO, /* CC_RSTN */
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GPIO114_GPIO, /* CC_FIFO */
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GPIO116_GPIO, /* CC_CCA */
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GPIO0_GPIO, /* CC_FIFOP */
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GPIO16_GPIO, /* CCSFD */
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GPIO39_GPIO, /* CSn */
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GPIO115_GPIO, /* Power enable */
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/* I2C */
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GPIO117_I2C_SCL,
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GPIO118_I2C_SDA,
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/* SSP 3 - 802.15.4 radio */
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GPIO39_GPIO, /* Chip Select */
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GPIO34_SSP3_SCLK,
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GPIO35_SSP3_TXD,
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GPIO41_SSP3_RXD,
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/* SSP 2 - to daughter boards */
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GPIO37_GPIO, /* Chip Select */
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GPIO36_SSP2_SCLK,
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GPIO38_SSP2_TXD,
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GPIO11_SSP2_RXD,
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/* SSP 1 - to daughter boards */
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GPIO24_GPIO, /* Chip Select */
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GPIO23_SSP1_SCLK,
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GPIO25_SSP1_TXD,
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GPIO26_SSP1_RXD,
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/* BTUART Basic Connector*/
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GPIO42_BTUART_RXD,
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GPIO43_BTUART_TXD,
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GPIO44_BTUART_CTS,
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GPIO45_BTUART_RTS,
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/* STUART Serial console via debug board*/
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GPIO46_STUART_RXD,
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GPIO47_STUART_TXD,
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/* Basic sensor board */
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GPIO96_GPIO, /* accelerometer interrupt */
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GPIO99_GPIO, /* ADC interrupt */
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/* Connector pins specified as gpios */
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GPIO94_GPIO, /* large basic connector pin 14 */
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GPIO10_GPIO, /* large basic connector pin 23 */
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/* LEDS */
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GPIO103_GPIO, /* red led */
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GPIO104_GPIO, /* green led */
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GPIO105_GPIO, /* blue led */
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};
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static struct gpio_led imote2_led_pins[] = {
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{
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.name = "imote2:red",
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.gpio = 103,
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.active_low = 1,
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}, {
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.name = "imote2:green",
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.gpio = 104,
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.active_low = 1,
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}, {
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.name = "imote2:blue",
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.gpio = 105,
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.active_low = 1,
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},
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};
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static struct gpio_led_platform_data imote2_led_data = {
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.num_leds = ARRAY_SIZE(imote2_led_pins),
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.leds = imote2_led_pins,
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};
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static struct platform_device imote2_leds = {
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.name = "leds-gpio",
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.id = -1,
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.dev = {
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.platform_data = &imote2_led_data,
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},
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};
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/* Reverse engineered partly from Platformx drivers */
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enum imote2_ldos{
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vcc_vref,
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vcc_cc2420,
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vcc_mica,
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vcc_bt,
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/* The two voltages available to sensor boards */
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vcc_sensor_1_8,
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vcc_sensor_3,
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vcc_sram_ext, /* directly connected to the pxa271 */
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vcc_pxa_pll,
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vcc_pxa_usim, /* Reference voltage for certain gpios */
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vcc_pxa_mem,
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vcc_pxa_flash,
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vcc_pxa_core, /*Dc-Dc buck not yet supported */
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vcc_lcd,
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vcc_bb,
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vcc_bbio,
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vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/
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};
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/* The values of the various regulator constraints are obviously dependent
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* on exactly what is wired to each ldo. Unfortunately this information is
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* not generally available. More information has been requested from Xbow
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* but as of yet they haven't been forthcoming.
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*
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* Some of these are clearly Stargate 2 related (no way of plugging
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* in an lcd on the IM2 for example!).
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*/
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static struct regulator_init_data imote2_ldo_init_data[] = {
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[vcc_bbio] = {
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.constraints = { /* board default 1.8V */
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.name = "vcc_bbio",
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.min_uV = 1800000,
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.max_uV = 1800000,
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},
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},
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[vcc_bb] = {
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.constraints = { /* board default 2.8V */
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.name = "vcc_bb",
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.min_uV = 2700000,
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.max_uV = 3000000,
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},
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},
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[vcc_pxa_flash] = {
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.constraints = {/* default is 1.8V */
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.name = "vcc_pxa_flash",
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.min_uV = 1800000,
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.max_uV = 1800000,
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},
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},
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[vcc_cc2420] = { /* also vcc_io */
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.constraints = {
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/* board default is 2.8V */
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.name = "vcc_cc2420",
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.min_uV = 2700000,
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.max_uV = 3300000,
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},
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},
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[vcc_vref] = { /* Reference for what? */
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.constraints = { /* default 1.8V */
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.name = "vcc_vref",
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.min_uV = 1800000,
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.max_uV = 1800000,
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},
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},
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[vcc_sram_ext] = {
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.constraints = { /* default 2.8V */
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.name = "vcc_sram_ext",
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.min_uV = 2800000,
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.max_uV = 2800000,
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},
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},
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[vcc_mica] = {
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.constraints = { /* default 2.8V */
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.name = "vcc_mica",
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.min_uV = 2800000,
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.max_uV = 2800000,
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},
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},
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[vcc_bt] = {
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.constraints = { /* default 2.8V */
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.name = "vcc_bt",
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.min_uV = 2800000,
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.max_uV = 2800000,
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},
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},
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[vcc_lcd] = {
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.constraints = { /* default 2.8V */
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.name = "vcc_lcd",
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.min_uV = 2700000,
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.max_uV = 3300000,
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},
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},
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[vcc_io] = { /* Same or higher than everything
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* bar vccbat and vccusb */
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.constraints = { /* default 2.8V */
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.name = "vcc_io",
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.min_uV = 2692000,
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.max_uV = 3300000,
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},
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},
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[vcc_sensor_1_8] = {
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.constraints = { /* default 1.8V */
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.name = "vcc_sensor_1_8",
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.min_uV = 1800000,
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.max_uV = 1800000,
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},
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},
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[vcc_sensor_3] = { /* curiously default 2.8V */
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.constraints = {
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.name = "vcc_sensor_3",
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.min_uV = 2800000,
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.max_uV = 3000000,
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},
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},
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[vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/
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.constraints = {
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.name = "vcc_pxa_pll",
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.min_uV = 1170000,
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.max_uV = 1430000,
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},
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},
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[vcc_pxa_usim] = {
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.constraints = { /* default 1.8V */
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.name = "vcc_pxa_usim",
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.min_uV = 1710000,
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.max_uV = 2160000,
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},
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},
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[vcc_pxa_mem] = {
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.constraints = { /* default 1.8V */
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.name = "vcc_pxa_mem",
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.min_uV = 1800000,
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.max_uV = 1800000,
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},
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},
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};
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static struct da903x_subdev_info imote2_da9030_subdevs[] = {
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{
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO2,
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.platform_data = &imote2_ldo_init_data[vcc_bbio],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO3,
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.platform_data = &imote2_ldo_init_data[vcc_bb],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO4,
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.platform_data = &imote2_ldo_init_data[vcc_pxa_flash],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO5,
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.platform_data = &imote2_ldo_init_data[vcc_cc2420],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO6,
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.platform_data = &imote2_ldo_init_data[vcc_vref],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO7,
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.platform_data = &imote2_ldo_init_data[vcc_sram_ext],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO8,
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.platform_data = &imote2_ldo_init_data[vcc_mica],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO9,
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.platform_data = &imote2_ldo_init_data[vcc_bt],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO10,
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.platform_data = &imote2_ldo_init_data[vcc_sensor_1_8],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO11,
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.platform_data = &imote2_ldo_init_data[vcc_sensor_3],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO12,
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.platform_data = &imote2_ldo_init_data[vcc_lcd],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO15,
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.platform_data = &imote2_ldo_init_data[vcc_pxa_pll],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO17,
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.platform_data = &imote2_ldo_init_data[vcc_pxa_usim],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO18,
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.platform_data = &imote2_ldo_init_data[vcc_io],
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}, {
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.name = "da903x-regulator",
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.id = DA9030_ID_LDO19,
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.platform_data = &imote2_ldo_init_data[vcc_pxa_mem],
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},
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};
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static struct da903x_platform_data imote2_da9030_pdata = {
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.num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs),
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.subdevs = imote2_da9030_subdevs,
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};
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/* As the the imote2 doesn't currently have a conventional SD slot
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* there is no option to hotplug cards, making all this rather simple
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*/
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static int imote2_mci_get_ro(struct device *dev)
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{
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return 0;
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}
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/* Rather simple case as hotplugging not possible */
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static struct pxamci_platform_data imote2_mci_platform_data = {
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.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */
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.get_ro = imote2_mci_get_ro,
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};
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static struct mtd_partition imote2flash_partitions[] = {
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{
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.name = "Bootloader",
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.size = 0x00040000,
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.offset = 0,
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.mask_flags = MTD_WRITEABLE,
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}, {
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.name = "Kernel",
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.size = 0x00200000,
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.offset = 0x00040000,
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.mask_flags = 0,
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}, {
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.name = "Filesystem",
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.size = 0x01DC0000,
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.offset = 0x00240000,
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.mask_flags = 0,
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},
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};
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static struct resource flash_resources = {
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.start = PXA_CS0_PHYS,
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.end = PXA_CS0_PHYS + SZ_32M - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct flash_platform_data imote2_flash_data = {
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.map_name = "cfi_probe",
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.parts = imote2flash_partitions,
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.nr_parts = ARRAY_SIZE(imote2flash_partitions),
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.name = "PXA27xOnChipROM",
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.width = 2,
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};
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static struct platform_device imote2_flash_device = {
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.name = "pxa2xx-flash",
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.id = 0,
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.dev = {
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.platform_data = &imote2_flash_data,
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},
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.resource = &flash_resources,
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.num_resources = 1,
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};
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/* Some of the drivers here are out of kernel at the moment (parts of IIO)
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* and it may be a while before they are in the mainline.
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*/
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static struct i2c_board_info __initdata imote2_i2c_board_info[] = {
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{ /* UCAM sensor board */
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.type = "max1238",
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.addr = 0x35,
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}, { /* ITS400 Sensor board only */
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.type = "max1363",
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.addr = 0x34,
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/* Through a nand gate - Also beware, on V2 sensor board the
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* pull up resistors are missing.
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*/
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.irq = IRQ_GPIO(99),
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}, { /* ITS400 Sensor board only */
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.type = "tsl2561",
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.addr = 0x49,
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/* Through a nand gate - Also beware, on V2 sensor board the
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* pull up resistors are missing.
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*/
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.irq = IRQ_GPIO(99),
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}, { /* ITS400 Sensor board only */
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.type = "tmp175",
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.addr = 0x4A,
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.irq = IRQ_GPIO(96),
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},
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};
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static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = {
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{
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.type = "da9030",
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.addr = 0x49,
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.platform_data = &imote2_da9030_pdata,
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.irq = gpio_to_irq(1),
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},
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};
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static struct pxa2xx_spi_master pxa_ssp_master_0_info = {
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.num_chipselect = 1,
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};
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static struct pxa2xx_spi_master pxa_ssp_master_1_info = {
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.num_chipselect = 1,
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};
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static struct pxa2xx_spi_master pxa_ssp_master_2_info = {
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.num_chipselect = 1,
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};
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/* Patch posted by Eric Miao <eric.miao@marvell.com> will remove
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* the need for these functions.
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*/
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static void spi1control(u32 command)
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{
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gpio_set_value(24, command & PXA2XX_CS_ASSERT ? 0 : 1);
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};
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static void spi3control(u32 command)
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{
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gpio_set_value(39, command & PXA2XX_CS_ASSERT ? 0 : 1);
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};
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static struct pxa2xx_spi_chip staccel_chip_info = {
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.tx_threshold = 8,
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.rx_threshold = 8,
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.dma_burst_size = 8,
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.timeout = 235,
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.cs_control = spi1control,
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};
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static struct pxa2xx_spi_chip cc2420_info = {
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.tx_threshold = 8,
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.rx_threshold = 8,
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.dma_burst_size = 8,
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.timeout = 235,
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.cs_control = spi3control,
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};
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static struct spi_board_info spi_board_info[] __initdata = {
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{ /* Driver in IIO */
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.modalias = "lis3l02dq",
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.max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */
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.bus_num = 1,
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.chip_select = 0,
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.controller_data = &staccel_chip_info,
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.irq = IRQ_GPIO(96),
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}, { /* Driver out of kernel as it needs considerable rewriting */
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.modalias = "cc2420",
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.max_speed_hz = 6500000,
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.bus_num = 3,
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.chip_select = 0,
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.controller_data = &cc2420_info,
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},
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};
|
|
|
|
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
|