/*
* linux/arch/arm/mach-pxa/stargate2.c
*
* Author: Ed C. Epp
* Created: Nov 05, 2002
* Copyright: Intel Corp.
*
* Modified 2009: Jonathan Cameron <jic23@cam.ac.uk>
*
* 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/init.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/fb.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/regulator/machine.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/plat-ram.h>
#include <linux/mtd/partitions.h>
#include <linux/i2c/pcf857x.h>
#include <linux/i2c/at24.h>
#include <linux/smc91x.h>
#include <linux/gpio.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/flash.h>
#include <mach/pxa27x.h>
#include <plat/i2c.h>
#include <mach/mmc.h>
#include <mach/udc.h>
#include <mach/pxa2xx_spi.h>
#include <mach/pxa27x-udc.h>
#include <linux/spi/spi.h>
#include <linux/mfd/da903x.h>
#include <linux/sht15.h>
#include "devices.h"
#include "generic.h"
/* Bluetooth */
#define SG2_BT_RESET 81
/* SD */
#define SG2_GPIO_nSD_DETECT 90
#define SG2_SD_POWER_ENABLE 89
static unsigned long stargate2_pin_config[] __initdata = {
GPIO15_nCS_1, /* SRAM */
/* SMC91x */
GPIO80_nCS_4,
GPIO40_GPIO, /*cable detect?*/
/* Device Identification for wakeup*/
GPIO102_GPIO,
/* Button */
GPIO91_GPIO | WAKEUP_ON_LEVEL_HIGH,
/* DA9030 */
GPIO1_GPIO,
/* Compact Flash */
GPIO79_PSKTSEL,
GPIO48_nPOE,
GPIO49_nPWE,
GPIO50_nPIOR,
GPIO51_nPIOW,
GPIO85_nPCE_1,
GPIO54_nPCE_2,
GPIO55_nPREG,
GPIO56_nPWAIT,
GPIO57_nIOIS16,
GPIO120_GPIO, /* Buff ctrl */
GPIO108_GPIO, /* Power ctrl */
GPIO82_GPIO, /* Reset */
GPIO53_GPIO, /* SG2_S0_GPIO_DETECT */
/* MMC */
GPIO32_MMC_CLK,
GPIO112_MMC_CMD,
GPIO92_MMC_DAT_0,
GPIO109_MMC_DAT_1,
GPIO110_MMC_DAT_2,
GPIO111_MMC_DAT_3,
GPIO90_GPIO, /* nSD detect */
GPIO89_GPIO, /* SD_POWER_ENABLE */
/* Bluetooth */
GPIO81_GPIO, /* reset */
/* cc2420 802.15.4 radio */
GPIO22_GPIO, /* CC_RSTN (out)*/
GPIO114_GPIO, /* CC_FIFO (in) */
GPIO116_GPIO, /* CC_CCA (in) */
GPIO0_GPIO, /* CC_FIFOP (in) */
GPIO16_GPIO, /* CCSFD (in) */
GPIO39_GPIO, /* CSn (out) */
/* 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 */
GPIO11_SSP2_RXD,
GPIO38_SSP2_TXD,
GPIO36_SSP2_SCLK,
GPIO37_GPIO, /* chip select */
/* SSP 1 */
GPIO26_SSP1_RXD,
GPIO25_SSP1_TXD,
GPIO23_SSP1_SCLK,
GPIO24_GPIO, /* chip select */
/* BTUART */
GPIO42_BTUART_RXD,
GPIO43_BTUART_TXD,
GPIO44_BTUART_CTS,
GPIO45_BTUART_RTS,
/* STUART */
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 */
/* SHT15 */
GPIO100_GPIO,
GPIO98_GPIO,
};
/**
* stargate2_reset_bluetooth() reset the bluecore to ensure consistent state
**/
static int stargate2_reset_bluetooth(void)
{
int err;
err = gpio_request(SG2_BT_RESET, "SG2_BT_RESET");
if (err) {
printk(KERN_ERR "Could not get gpio for bluetooth reset \n");
return err;
}
gpio_direction_output(SG2_BT_RESET, 1);
mdelay(5);
/* now reset it - 5 msec minimum */
gpio_set_value(SG2_BT_RESET, 0);
mdelay(10);
gpio_set_value(SG2_BT_RESET, 1);
gpio_free(SG2_BT_RESET);
return 0;
}
static struct led_info stargate2_leds[] = {
{
.name = "sg2:red",
.flags = DA9030_LED_RATE_ON,
}, {
.name = "sg2:blue",
.flags = DA9030_LED_RATE_ON,
}, {
.name = "sg2:green",
.flags = DA9030_LED_RATE_ON,
},
};
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 stargate2_sensor_3_con[] = {
{
.dev = &sht15.dev,
.supply = "vcc",
},
};
enum stargate2_ldos{
vcc_vref,
vcc_cc2420,
/* a mote connector? */
vcc_mica,
/* the CSR bluecore chip */
vcc_bt,
/* The two voltages available to sensor boards */
vcc_sensor_1_8,
vcc_sensor_3,
/* directly connected to the pxa27x */
vcc_sram_ext,
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, /*not sure!*/
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.
*/
static struct regulator_init_data stargate2_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(stargate2_sensor_3_con),
.consumer_supplies = stargate2_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 stargate2_da9030_subdevs[] = {
{
.name = "da903x-led",
.id = DA9030_ID_LED_2,
.platform_data = &stargate2_leds[0],
}, {
.name = "da903x-led",
.id = DA9030_ID_LED_3,
.platform_data = &stargate2_leds[2],
}, {
.name = "da903x-led",
.id = DA9030_ID_LED_4,
.platform_data = &stargate2_leds[1],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO2,
.platform_data = &stargate2_ldo_init_data[vcc_bbio],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO3,
.platform_data = &stargate2_ldo_init_data[vcc_bb],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO4,
.platform_data = &stargate2_ldo_init_data[vcc_pxa_flash],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO5,
.platform_data = &stargate2_ldo_init_data[vcc_cc2420],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO6,
.platform_data = &stargate2_ldo_init_data[vcc_vref],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO7,
.platform_data = &stargate2_ldo_init_data[vcc_sram_ext],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO8,
.platform_data = &stargate2_ldo_init_data[vcc_mica],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO9,
.platform_data = &stargate2_ldo_init_data[vcc_bt],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO10,
.platform_data = &stargate2_ldo_init_data[vcc_sensor_1_8],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO11,
.platform_data = &stargate2_ldo_init_data[vcc_sensor_3],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO12,
.platform_data = &stargate2_ldo_init_data[vcc_lcd],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO15,
.platform_data = &stargate2_ldo_init_data[vcc_pxa_pll],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO17,
.platform_data = &stargate2_ldo_init_data[vcc_pxa_usim],
}, {
.name = "da903x-regulator", /*pxa vcc i/o and cc2420 vcc i/o */
.id = DA9030_ID_LDO18,
.platform_data = &stargate2_ldo_init_data[vcc_io],
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO19,
.platform_data = &stargate2_ldo_init_data[vcc_pxa_mem],
},
};
static struct da903x_platform_data stargate2_da9030_pdata = {
.num_subdevs = ARRAY_SIZE(stargate2_da9030_subdevs),
.subdevs = stargate2_da9030_subdevs,
};
static struct resource smc91x_resources[] = {
[0] = {
.name = "smc91x-regs",
.start = (PXA_CS4_PHYS + 0x300),
.end = (PXA_CS4_PHYS + 0xfffff),
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_GPIO(40),
.end = IRQ_GPIO(40),
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
}
};
static struct smc91x_platdata stargate2_smc91x_info = {
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT
| SMC91X_NOWAIT | SMC91X_USE_DMA,
};
static struct platform_device smc91x_device = {
.name = "smc91x",
.id = -1,
.num_resources = ARRAY_SIZE(smc91x_resources),
.resource = smc91x_resources,
.dev = {
.platform_data = &stargate2_smc91x_info,
},
};
static struct pxamci_platform_data stargate2_mci_platform_data;
/*
* The card detect interrupt isn't debounced so we delay it by 250ms
* to give the card a chance to fully insert / eject.
*/
static int stargate2_mci_init(struct device *dev,
irq_handler_t stargate2_detect_int,
void *data)
{
int err;
err = gpio_request(SG2_SD_POWER_ENABLE, "SG2_sd_power_enable");
if (err) {
printk(KERN_ERR "Can't get the gpio for SD power control");
goto return_err;
}
gpio_direction_output(SG2_SD_POWER_ENABLE, 0);
err = gpio_request(SG2_GPIO_nSD_DETECT, "SG2_sd_detect");
if (err) {
printk(KERN_ERR "Can't get the sd detect gpio");
goto free_power_en;
}
gpio_direction_input(SG2_GPIO_nSD_DETECT);
/* Delay to allow for full insertion */
stargate2_mci_platform_data.detect_delay = msecs_to_jiffies(250);
err = request_irq(IRQ_GPIO(SG2_GPIO_nSD_DETECT),
stargate2_detect_int,
IRQ_TYPE_EDGE_BOTH,
"MMC card detect",
data);
if (err) {
printk(KERN_ERR "can't request MMC card detect IRQ\n");
goto free_nsd_detect;
}
return 0;
free_nsd_detect:
gpio_free(SG2_GPIO_nSD_DETECT);
free_power_en:
gpio_free(SG2_SD_POWER_ENABLE);
return_err:
return err;
}
/**
* stargate2_mci_setpower() - set state of mmc power supply
*
* Very simple control. Either it is on or off and is controlled by
* a gpio pin */
static void stargate2_mci_setpower(struct device *dev, unsigned int vdd)
{
gpio_set_value(SG2_SD_POWER_ENABLE, !!vdd);
}
static void stargate2_mci_exit(struct device *dev, void *data)
{
free_irq(IRQ_GPIO(SG2_GPIO_nSD_DETECT), data);
gpio_free(SG2_SD_POWER_ENABLE);
gpio_free(SG2_GPIO_nSD_DETECT);
}
static struct pxamci_platform_data stargate2_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
.init = stargate2_mci_init,
.setpower = stargate2_mci_setpower,
.exit = stargate2_mci_exit,
};
static struct mtd_partition stargate2flash_partitions[] = {
{
.name = "Bootloader",
.size = 0x00040000,
.offset = 0,
.mask_flags = 0,
}, {
.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 stargate2_flash_data = {
.map_name = "cfi_probe",
.parts = stargate2flash_partitions,
.nr_parts = ARRAY_SIZE(stargate2flash_partitions),
.name = "PXA27xOnChipROM",
.width = 2,
};
static struct platform_device stargate2_flash_device = {
.name = "pxa2xx-flash",
.id = 0,
.dev = {
.platform_data = &stargate2_flash_data,
},
.resource = &flash_resources,
.num_resources = 1,
};
/*
* SRAM - The Stargate 2 has 32MB of SRAM.
*
* Here it is made available as an MTD. This will then
* typically have a cifs filesystem created on it to provide
* fast temporary storage.
*/
static struct resource sram_resources = {
.start = PXA_CS1_PHYS,
.end = PXA_CS1_PHYS + SZ_32M-1,
.flags = IORESOURCE_MEM,
};
static struct platdata_mtd_ram stargate2_sram_pdata = {
.mapname = "Stargate2 SRAM",
.bankwidth = 2,
};
static struct platform_device stargate2_sram = {
.name = "mtd-ram",
.id = 0,
.resource = &sram_resources,
.num_resources = 1,
.dev = {
.platform_data = &stargate2_sram_pdata,
},
};
static struct pcf857x_platform_data platform_data_pcf857x = {
.gpio_base = 128,
.n_latch = 0,
.setup = NULL,
.teardown = NULL,
.context = NULL,
};
static struct at24_platform_data pca9500_eeprom_pdata = {
.byte_len = 256,
.page_size = 4,
};
static struct i2c_board_info __initdata stargate2_i2c_board_info[] = {
/* Techically this a pca9500 - but it's compatible with the 8574
* for gpio expansion and the 24c02 for eeprom access.
*/
{
.type = "pcf8574",
.addr = 0x27,
.platform_data = &platform_data_pcf857x,
}, {
.type = "24c02",
.addr = 0x57,
.platform_data = &pca9500_eeprom_pdata,
}, {
.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 stargate2_pwr_i2c_board_info[] = {
{
.type = "da9030",
.addr = 0x49,
.platform_data = &stargate2_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,
};
/* An upcoming kernel change will scrap SFRM usage so these
* drivers have been moved to use gpio's via cs_control */
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 = {
{
.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),
}, {
.modalias = "cc2420",
.max_speed_hz = 6500000,
.bus_num = 3,
.chip_select = 0,
.controller_data = &cc2420_info,
},
};
static void sg2_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;
}
}
/* Board doesn't support cable detection - so always lie and say
* something is there.
*/
static int sg2_udc_detect(void)
{
return 1;
}
static struct pxa2xx_udc_mach_info stargate2_udc_info __initdata = {
.udc_is_connected = sg2_udc_detect,
.udc_command = sg2_udc_command,
};
static struct platform_device *stargate2_devices[] = {
&stargate2_flash_device,
&stargate2_sram,
&smc91x_device,
&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 stargate2_init(void)
{
/* This is probably a board specific hack as this must be set
prior to connecting the MFP stuff up. */
MECR &= ~MECR_NOS;
pxa2xx_mfp_config(ARRAY_AND_SIZE(stargate2_pin_config));
/* spi chip selects */
gpio_direction_output(37, 0);
gpio_direction_output(24, 0);
gpio_direction_output(39, 0);
platform_add_devices(ARRAY_AND_SIZE(stargate2_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, ARRAY_AND_SIZE(stargate2_i2c_board_info));
i2c_register_board_info(1,
ARRAY_AND_SIZE(stargate2_pwr_i2c_board_info));
pxa27x_set_i2c_power_info(&i2c_pwr_pdata);
pxa_set_i2c_info(&i2c_pdata);
pxa_set_mci_info(&stargate2_mci_platform_data);
pxa_set_udc_info(&stargate2_udc_info);
stargate2_reset_bluetooth();
}
MACHINE_START(STARGATE2, "Stargate 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 = stargate2_init,
.boot_params = 0xA0000100,
MACHINE_END
