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ARM: OMAP3: Initialize more devices for LDP
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Based on an earlier patches by Stanley.Miao <stanley.miao@windriver.com>
and Nishant Kamat <nskamat@ti.com>.

Note that at the ads7846 support still needs support for vaux_control
for the touchscreen to work.

Signed-off-by: Tony Lindgren <tony@atomide.com>
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Tony Lindgren committed May 28, 2009
1 parent 49adf46 commit 4a899d5
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Showing 2 changed files with 207 additions and 1 deletion.
204 changes: 203 additions & 1 deletion arch/arm/mach-omap2/board-ldp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -16,11 +16,13 @@
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/workqueue.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/twl4030.h>
#include <linux/io.h>
#include <linux/smsc911x.h>
Expand All @@ -39,6 +41,7 @@
#include <asm/delay.h>
#include <mach/control.h>
#include <mach/usb.h>
#include <mach/keypad.h>

#include "mmc-twl4030.h"

Expand Down Expand Up @@ -77,6 +80,165 @@ static struct platform_device ldp_smsc911x_device = {
},
};

static int ldp_twl4030_keymap[] = {
KEY(0, 0, KEY_1),
KEY(1, 0, KEY_2),
KEY(2, 0, KEY_3),
KEY(0, 1, KEY_4),
KEY(1, 1, KEY_5),
KEY(2, 1, KEY_6),
KEY(3, 1, KEY_F5),
KEY(0, 2, KEY_7),
KEY(1, 2, KEY_8),
KEY(2, 2, KEY_9),
KEY(3, 2, KEY_F6),
KEY(0, 3, KEY_F7),
KEY(1, 3, KEY_0),
KEY(2, 3, KEY_F8),
PERSISTENT_KEY(4, 5),
KEY(4, 4, KEY_VOLUMEUP),
KEY(5, 5, KEY_VOLUMEDOWN),
0
};

static struct twl4030_keypad_data ldp_kp_twl4030_data = {
.rows = 6,
.cols = 6,
.keymap = ldp_twl4030_keymap,
.keymapsize = ARRAY_SIZE(ldp_twl4030_keymap),
.rep = 1,
};

static struct gpio_keys_button ldp_gpio_keys_buttons[] = {
[0] = {
.code = KEY_ENTER,
.gpio = 101,
.desc = "enter sw",
.active_low = 1,
.debounce_interval = 30,
},
[1] = {
.code = KEY_F1,
.gpio = 102,
.desc = "func 1",
.active_low = 1,
.debounce_interval = 30,
},
[2] = {
.code = KEY_F2,
.gpio = 103,
.desc = "func 2",
.active_low = 1,
.debounce_interval = 30,
},
[3] = {
.code = KEY_F3,
.gpio = 104,
.desc = "func 3",
.active_low = 1,
.debounce_interval = 30,
},
[4] = {
.code = KEY_F4,
.gpio = 105,
.desc = "func 4",
.active_low = 1,
.debounce_interval = 30,
},
[5] = {
.code = KEY_LEFT,
.gpio = 106,
.desc = "left sw",
.active_low = 1,
.debounce_interval = 30,
},
[6] = {
.code = KEY_RIGHT,
.gpio = 107,
.desc = "right sw",
.active_low = 1,
.debounce_interval = 30,
},
[7] = {
.code = KEY_UP,
.gpio = 108,
.desc = "up sw",
.active_low = 1,
.debounce_interval = 30,
},
[8] = {
.code = KEY_DOWN,
.gpio = 109,
.desc = "down sw",
.active_low = 1,
.debounce_interval = 30,
},
};

static struct gpio_keys_platform_data ldp_gpio_keys = {
.buttons = ldp_gpio_keys_buttons,
.nbuttons = ARRAY_SIZE(ldp_gpio_keys_buttons),
.rep = 1,
};

static struct platform_device ldp_gpio_keys_device = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &ldp_gpio_keys,
},
};

static int ts_gpio;

/**
* @brief ads7846_dev_init : Requests & sets GPIO line for pen-irq
*
* @return - void. If request gpio fails then Flag KERN_ERR.
*/
static void ads7846_dev_init(void)
{
if (gpio_request(ts_gpio, "ads7846 irq") < 0) {
printk(KERN_ERR "can't get ads746 pen down GPIO\n");
return;
}

gpio_direction_input(ts_gpio);
omap_set_gpio_debounce(ts_gpio, 1);
omap_set_gpio_debounce_time(ts_gpio, 0xa);
}

static int ads7846_get_pendown_state(void)
{
return !gpio_get_value(ts_gpio);
}

static struct ads7846_platform_data tsc2046_config __initdata = {
.get_pendown_state = ads7846_get_pendown_state,
.keep_vref_on = 1,
};

static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
.turbo_mode = 0,
.single_channel = 1, /* 0: slave, 1: master */
};

static struct spi_board_info ldp_spi_board_info[] __initdata = {
[0] = {
/*
* TSC2046 operates at a max freqency of 2MHz, so
* operate slightly below at 1.5MHz
*/
.modalias = "ads7846",
.bus_num = 1,
.chip_select = 0,
.max_speed_hz = 1500000,
.controller_data = &tsc2046_mcspi_config,
.irq = 0,
.platform_data = &tsc2046_config,
},
};

static inline void __init ldp_init_smsc911x(void)
{
int eth_cs;
Expand Down Expand Up @@ -132,18 +294,49 @@ static struct omap_board_config_kernel ldp_config[] __initdata = {
{ OMAP_TAG_LCD, &ldp_lcd_config },
};

static struct twl4030_usb_data ldp_usb_data = {
.usb_mode = T2_USB_MODE_ULPI,
};

static struct twl4030_gpio_platform_data ldp_gpio_data = {
.gpio_base = OMAP_MAX_GPIO_LINES,
.irq_base = TWL4030_GPIO_IRQ_BASE,
.irq_end = TWL4030_GPIO_IRQ_END,
};

static struct twl4030_madc_platform_data ldp_madc_data = {
.irq_line = 1,
};

static struct regulator_consumer_supply ldp_vmmc1_supply = {
.supply = "vmmc",
};

/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data ldp_vmmc1 = {
.constraints = {
.min_uV = 1850000,
.max_uV = 3150000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
| REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = 1,
.consumer_supplies = &ldp_vmmc1_supply,
};

static struct twl4030_platform_data ldp_twldata = {
.irq_base = TWL4030_IRQ_BASE,
.irq_end = TWL4030_IRQ_END,

/* platform_data for children goes here */
.madc = &ldp_madc_data,
.usb = &ldp_usb_data,
.vmmc1 = &ldp_vmmc1,
.gpio = &ldp_gpio_data,
.keypad = &ldp_kp_twl4030_data,
};

static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
Expand Down Expand Up @@ -177,6 +370,7 @@ static struct twl4030_hsmmc_info mmc[] __initdata = {
static struct platform_device *ldp_devices[] __initdata = {
&ldp_smsc911x_device,
&ldp_lcd_device,
&ldp_gpio_keys_device,
};

static void __init omap_ldp_init(void)
Expand All @@ -185,9 +379,17 @@ static void __init omap_ldp_init(void)
platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
omap_board_config = ldp_config;
omap_board_config_size = ARRAY_SIZE(ldp_config);
ts_gpio = 54;
ldp_spi_board_info[0].irq = gpio_to_irq(ts_gpio);
spi_register_board_info(ldp_spi_board_info,
ARRAY_SIZE(ldp_spi_board_info));
ads7846_dev_init();
omap_serial_init();
twl4030_mmc_init(mmc);
usb_musb_init();

twl4030_mmc_init(mmc);
/* link regulators to MMC adapters */
ldp_vmmc1_supply.dev = mmc[0].dev;
}

static void __init omap_ldp_map_io(void)
Expand Down
4 changes: 4 additions & 0 deletions arch/arm/plat-omap/include/mach/keypad.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,11 @@ struct omap_kp_platform_data {
#define GROUP_3 (3 << 16)
#define GROUP_MASK GROUP_3

#define KEY_PERSISTENT 0x00800000
#define KEYNUM_MASK 0x00EFFFFF
#define KEY(col, row, val) (((col) << 28) | ((row) << 24) | (val))
#define PERSISTENT_KEY(col, row) (((col) << 28) | ((row) << 24) | \
KEY_PERSISTENT)

#endif

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