diff options
Diffstat (limited to 'arch/arm/mach-omap2/board-tuna-input.c')
| -rw-r--r-- | arch/arm/mach-omap2/board-tuna-input.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-tuna-input.c b/arch/arm/mach-omap2/board-tuna-input.c new file mode 100644 index 0000000..8d4d164 --- /dev/null +++ b/arch/arm/mach-omap2/board-tuna-input.c @@ -0,0 +1,183 @@ +/* + * Copyright (C) 2011 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/platform_device.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/keyreset.h> +#include <linux/gpio_event.h> +#include <linux/gpio.h> +#include <linux/i2c.h> +#include <linux/i2c/atmel_mxt_ts.h> +#include <linux/platform_data/mms_ts.h> +#include <asm/mach-types.h> +#include <plat/omap4-keypad.h> + +#include "board-tuna.h" +#include "mux.h" + +#define GPIO_TOUCH_EN 19 +#define GPIO_TOUCH_IRQ 46 + +/* touch is on i2c3 */ +#define GPIO_TOUCH_SCL 130 +#define GPIO_TOUCH_SDA 131 + +static int mms_ts_panel_id; + +static struct gpio_event_direct_entry tuna_gpio_keypad_keys_map_high[] = { + { + .code = KEY_POWER, + .gpio = 3, + }, +}; + +static struct gpio_event_input_info tuna_gpio_keypad_keys_info_high = { + .info.func = gpio_event_input_func, + .info.no_suspend = true, + .type = EV_KEY, + .keymap = tuna_gpio_keypad_keys_map_high, + .keymap_size = ARRAY_SIZE(tuna_gpio_keypad_keys_map_high), + .flags = GPIOEDF_ACTIVE_HIGH, +}; + +static struct gpio_event_direct_entry tuna_gpio_keypad_keys_map_low[] = { + { + .code = KEY_VOLUMEDOWN, + .gpio = 8, + }, + { + .code = KEY_VOLUMEUP, + .gpio = 30, + }, +}; + +static struct gpio_event_input_info tuna_gpio_keypad_keys_info_low = { + .info.func = gpio_event_input_func, + .info.no_suspend = true, + .type = EV_KEY, + .keymap = tuna_gpio_keypad_keys_map_low, + .keymap_size = ARRAY_SIZE(tuna_gpio_keypad_keys_map_low), +}; + +static struct gpio_event_info *tuna_gpio_keypad_info[] = { + &tuna_gpio_keypad_keys_info_high.info, + &tuna_gpio_keypad_keys_info_low.info, +}; + +static struct gpio_event_platform_data tuna_gpio_keypad_data = { + .name = "tuna-gpio-keypad", + .info = tuna_gpio_keypad_info, + .info_count = ARRAY_SIZE(tuna_gpio_keypad_info) +}; + +static struct platform_device tuna_gpio_keypad_device = { + .name = GPIO_EVENT_DEV_NAME, + .id = 0, + .dev = { + .platform_data = &tuna_gpio_keypad_data, + }, +}; + +static int melfas_mux_fw_flash(bool to_gpios) +{ + /* TOUCH_EN is always an output */ + if (to_gpios) { + gpio_direction_output(GPIO_TOUCH_IRQ, 0); + omap_mux_set_gpio( + OMAP_PIN_INPUT | OMAP_MUX_MODE3, + GPIO_TOUCH_IRQ); + + gpio_direction_output(GPIO_TOUCH_SCL, 0); + omap_mux_set_gpio(OMAP_PIN_INPUT | OMAP_MUX_MODE3, + GPIO_TOUCH_SCL); + + gpio_direction_output(GPIO_TOUCH_SDA, 0); + omap_mux_set_gpio(OMAP_PIN_INPUT | OMAP_MUX_MODE3, + GPIO_TOUCH_SDA); + } else { + gpio_direction_output(GPIO_TOUCH_IRQ, 1); + gpio_direction_input(GPIO_TOUCH_IRQ); + omap_mux_set_gpio( + OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE3, + GPIO_TOUCH_IRQ); + + gpio_direction_output(GPIO_TOUCH_SCL, 1); + gpio_direction_input(GPIO_TOUCH_SCL); + omap_mux_set_gpio(OMAP_PIN_INPUT | OMAP_MUX_MODE0, + GPIO_TOUCH_SCL); + + gpio_direction_output(GPIO_TOUCH_SDA, 1); + gpio_direction_input(GPIO_TOUCH_SDA); + omap_mux_set_gpio(OMAP_PIN_INPUT | OMAP_MUX_MODE0, + GPIO_TOUCH_SDA); + } + + return 0; +} + +static int __init mms_ts_panel_id_setup(char *str) +{ + mms_ts_panel_id = simple_strtol(str, NULL, 0); + return 1; +} +__setup("mms_ts.panel_id=", mms_ts_panel_id_setup); + +static struct mms_ts_platform_data mms_ts_pdata = { + .max_x = 720, + .max_y = 1280, + .mux_fw_flash = melfas_mux_fw_flash, + .gpio_resetb = GPIO_TOUCH_IRQ, + .gpio_vdd_en = GPIO_TOUCH_EN, + .gpio_scl = GPIO_TOUCH_SCL, + .gpio_sda = GPIO_TOUCH_SDA, +}; + +static struct i2c_board_info __initdata tuna_i2c3_boardinfo_final[] = { + { + I2C_BOARD_INFO("mms_ts", 0x48), + .flags = I2C_CLIENT_WAKE, + .platform_data = &mms_ts_pdata, + .irq = OMAP_GPIO_IRQ(GPIO_TOUCH_IRQ), + }, +}; + +void __init omap4_tuna_input_init(void) +{ + gpio_request(GPIO_TOUCH_IRQ, "tsp_int_n"); + gpio_direction_input(GPIO_TOUCH_IRQ); + omap_mux_init_gpio(GPIO_TOUCH_IRQ, + OMAP_PIN_INPUT_PULLUP); + + gpio_request(GPIO_TOUCH_EN, "tsp_en"); + gpio_direction_output(GPIO_TOUCH_EN, 1); + omap_mux_init_gpio(GPIO_TOUCH_EN, OMAP_PIN_OUTPUT); + gpio_request(GPIO_TOUCH_SCL, "ap_i2c3_scl"); + gpio_request(GPIO_TOUCH_SDA, "ap_i2c3_sda"); + + /* 0x12 == FPCB 3.2 + * 0xa1 == FPCB 3.1 + */ + if (mms_ts_panel_id == 0x12) + mms_ts_pdata.fw_name = "mms144_ts_rev32.fw"; + else + mms_ts_pdata.fw_name = "mms144_ts_rev31.fw"; + + i2c_register_board_info(3, tuna_i2c3_boardinfo_final, + ARRAY_SIZE(tuna_i2c3_boardinfo_final)); + + omap_mux_init_gpio(8, OMAP_PIN_INPUT); + omap_mux_init_gpio(30, OMAP_PIN_INPUT); + + platform_device_register(&tuna_gpio_keypad_device); +} |