From 0c24352eada58dc3571647593e516b2d5b50014f Mon Sep 17 00:00:00 2001 From: Sundar Iyer Date: Fri, 21 Jan 2011 10:56:17 +0530 Subject: [PATCH] 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 Signed-off-by: Linus Walleij --- arch/arm/mach-ux500/board-mop500-stuib.c | 183 +++++++++++++++++++++++++++++++ arch/arm/mach-ux500/board-mop500.h | 1 + 2 files changed, 184 insertions(+) diff --git a/arch/arm/mach-ux500/board-mop500-stuib.c b/arch/arm/mach-ux500/board-mop500-stuib.c index 7fa3021..8b6323e 100644 --- a/arch/arm/mach-ux500/board-mop500-stuib.c +++ b/arch/arm/mach-ux500/board-mop500-stuib.c @@ -6,9 +6,192 @@ #include #include +#include +#include +#include +#include +#include +#include #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)); } diff --git a/arch/arm/mach-ux500/board-mop500.h b/arch/arm/mach-ux500/board-mop500.h index cedf8eb..fe22b84 100644 --- a/arch/arm/mach-ux500/board-mop500.h +++ b/arch/arm/mach-ux500/board-mop500.h @@ -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) -- 2.7.4