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mach-ux500: add ST-UIB platform data 

The ST-UIB contains a matrix keypad interfaced with the
STMPE1601 port expander and a ROHM BU2101 touch panel.

Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Sundar Iyer 2011-01-21 10:56:17 +05:30 committed by Linus Walleij
parent 705e098444
commit 0c24352ead
2 changed files with 184 additions and 0 deletions
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183
arch/arm/mach-ux500/board-mop500-stuib.c
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@ -6,9 +6,192 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mfd/stmpe.h>
#include <linux/input/bu21013.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/input/matrix_keypad.h>
#include "board-mop500.h"
/* STMPE/SKE keypad use this key layout */
static const unsigned int mop500_keymap[] = {
KEY(2, 5, KEY_END),
KEY(4, 1, KEY_POWER),
KEY(3, 5, KEY_VOLUMEDOWN),
KEY(1, 3, KEY_3),
KEY(5, 2, KEY_RIGHT),
KEY(5, 0, KEY_9),
KEY(0, 5, KEY_MENU),
KEY(7, 6, KEY_ENTER),
KEY(4, 5, KEY_0),
KEY(6, 7, KEY_2),
KEY(3, 4, KEY_UP),
KEY(3, 3, KEY_DOWN),
KEY(6, 4, KEY_SEND),
KEY(6, 2, KEY_BACK),
KEY(4, 2, KEY_VOLUMEUP),
KEY(5, 5, KEY_1),
KEY(4, 3, KEY_LEFT),
KEY(3, 2, KEY_7),
};
static const struct matrix_keymap_data mop500_keymap_data = {
.keymap = mop500_keymap,
.keymap_size = ARRAY_SIZE(mop500_keymap),
};
/*
* STMPE1601
*/
static struct stmpe_keypad_platform_data stmpe1601_keypad_data = {
.debounce_ms = 64,
.scan_count = 8,
.no_autorepeat = true,
.keymap_data = &mop500_keymap_data,
};
static struct stmpe_platform_data stmpe1601_data = {
.id = 1,
.blocks = STMPE_BLOCK_KEYPAD,
.irq_trigger = IRQF_TRIGGER_FALLING,
.irq_base = MOP500_STMPE1601_IRQ(0),
.keypad = &stmpe1601_keypad_data,
.autosleep = true,
.autosleep_timeout = 1024,
};
static struct i2c_board_info __initdata mop500_i2c0_devices_stuib[] = {
{
I2C_BOARD_INFO("stmpe1601", 0x40),
.irq = NOMADIK_GPIO_TO_IRQ(218),
.platform_data = &stmpe1601_data,
.flags = I2C_CLIENT_WAKE,
},
};
/*
* BU21013 ROHM touchscreen interface on the STUIBs
*/
/* tracks number of bu21013 devices being enabled */
static int bu21013_devices;
#define TOUCH_GPIO_PIN 84
#define TOUCH_XMAX 384
#define TOUCH_YMAX 704
#define PRCMU_CLOCK_OCR 0x1CC
#define TSC_EXT_CLOCK_9_6MHZ 0x840000
/**
* bu21013_gpio_board_init : configures the touch panel.
* @reset_pin: reset pin number
* This function can be used to configures
* the voltage and reset the touch panel controller.
*/
static int bu21013_gpio_board_init(int reset_pin)
{
int retval = 0;
bu21013_devices++;
if (bu21013_devices == 1) {
retval = gpio_request(reset_pin, "touchp_reset");
if (retval) {
printk(KERN_ERR "Unable to request gpio reset_pin");
return retval;
}
retval = gpio_direction_output(reset_pin, 1);
if (retval < 0) {
printk(KERN_ERR "%s: gpio direction failed\n",
__func__);
return retval;
}
}
return retval;
}
/**
* bu21013_gpio_board_exit : deconfigures the touch panel controller
* @reset_pin: reset pin number
* This function can be used to deconfigures the chip selection
* for touch panel controller.
*/
static int bu21013_gpio_board_exit(int reset_pin)
{
int retval = 0;
if (bu21013_devices == 1) {
retval = gpio_direction_output(reset_pin, 0);
if (retval < 0) {
printk(KERN_ERR "%s: gpio direction failed\n",
__func__);
return retval;
}
gpio_set_value(reset_pin, 0);
}
bu21013_devices--;
return retval;
}
/**
* bu21013_read_pin_val : get the interrupt pin value
* This function can be used to get the interrupt pin value for touch panel
* controller.
*/
static int bu21013_read_pin_val(void)
{
return gpio_get_value(TOUCH_GPIO_PIN);
}
static struct bu21013_platform_device tsc_plat_device = {
.cs_en = bu21013_gpio_board_init,
.cs_dis = bu21013_gpio_board_exit,
.irq_read_val = bu21013_read_pin_val,
.irq = NOMADIK_GPIO_TO_IRQ(TOUCH_GPIO_PIN),
.cs_pin = GPIO_BU21013_CS,
.touch_x_max = TOUCH_XMAX,
.touch_y_max = TOUCH_YMAX,
.ext_clk = false,
.x_flip = false,
.y_flip = true,
};
static struct bu21013_platform_device tsc_plat2_device = {
.cs_en = bu21013_gpio_board_init,
.cs_dis = bu21013_gpio_board_exit,
.irq_read_val = bu21013_read_pin_val,
.irq = NOMADIK_GPIO_TO_IRQ(TOUCH_GPIO_PIN),
.cs_pin = GPIO_BU21013_CS,
.touch_x_max = TOUCH_XMAX,
.touch_y_max = TOUCH_YMAX,
.ext_clk = false,
.x_flip = false,
.y_flip = true,
};
static struct i2c_board_info __initdata u8500_i2c3_devices_stuib[] = {
{
I2C_BOARD_INFO("bu21013_tp", 0x5C),
.platform_data = &tsc_plat_device,
},
{
I2C_BOARD_INFO("bu21013_tp", 0x5D),
.platform_data = &tsc_plat2_device,
},
};
void __init mop500_stuib_init(void)
{
mop500_uib_i2c_add(0, mop500_i2c0_devices_stuib,
ARRAY_SIZE(mop500_i2c0_devices_stuib));
mop500_uib_i2c_add(3, u8500_i2c3_devices_stuib,
ARRAY_SIZE(u8500_i2c3_devices_stuib));
}

1
arch/arm/mach-ux500/board-mop500.h
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@ -11,6 +11,7 @@
/* GPIOs on the TC35892 expander */
#define GPIO_SDMMC_CD MOP500_EGPIO(3)
#define GPIO_BU21013_CS MOP500_EGPIO(13)
#define GPIO_SDMMC_EN MOP500_EGPIO(17)
#define GPIO_SDMMC_1V8_3V_SEL MOP500_EGPIO(18)