diff options
Diffstat (limited to 'arch/arm/mach-davinci')
| -rw-r--r-- | arch/arm/mach-davinci/board-da850-evm.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c index f9969dead63..2139ce8606c 100644 --- a/arch/arm/mach-davinci/board-da850-evm.c +++ b/arch/arm/mach-davinci/board-da850-evm.c @@ -430,6 +430,182 @@ static int da850_evm_ui_expander_teardown(struct i2c_client *client, return 0; } +/* assign the baseboard expander's GPIOs after the UI board's */ +#define DA850_UI_EXPANDER_N_GPIOS ARRAY_SIZE(da850_evm_ui_exp) +#define DA850_BB_EXPANDER_GPIO_BASE (DAVINCI_N_GPIO + DA850_UI_EXPANDER_N_GPIOS) + +enum da850_evm_bb_exp_pins { + DA850_EVM_BB_EXP_DEEP_SLEEP_EN = 0, + DA850_EVM_BB_EXP_SW_RST, + DA850_EVM_BB_EXP_TP_23, + DA850_EVM_BB_EXP_TP_22, + DA850_EVM_BB_EXP_TP_21, + DA850_EVM_BB_EXP_USER_PB1, + DA850_EVM_BB_EXP_USER_LED2, + DA850_EVM_BB_EXP_USER_LED1, + DA850_EVM_BB_EXP_USER_SW1, + DA850_EVM_BB_EXP_USER_SW2, + DA850_EVM_BB_EXP_USER_SW3, + DA850_EVM_BB_EXP_USER_SW4, + DA850_EVM_BB_EXP_USER_SW5, + DA850_EVM_BB_EXP_USER_SW6, + DA850_EVM_BB_EXP_USER_SW7, + DA850_EVM_BB_EXP_USER_SW8 +}; + +static const char const *da850_evm_bb_exp[] = { + [DA850_EVM_BB_EXP_DEEP_SLEEP_EN] = "deep_sleep_en", + [DA850_EVM_BB_EXP_SW_RST] = "sw_rst", + [DA850_EVM_BB_EXP_TP_23] = "tp_23", + [DA850_EVM_BB_EXP_TP_22] = "tp_22", + [DA850_EVM_BB_EXP_TP_21] = "tp_21", + [DA850_EVM_BB_EXP_USER_PB1] = "user_pb1", + [DA850_EVM_BB_EXP_USER_LED2] = "user_led2", + [DA850_EVM_BB_EXP_USER_LED1] = "user_led1", + [DA850_EVM_BB_EXP_USER_SW1] = "user_sw1", + [DA850_EVM_BB_EXP_USER_SW2] = "user_sw2", + [DA850_EVM_BB_EXP_USER_SW3] = "user_sw3", + [DA850_EVM_BB_EXP_USER_SW4] = "user_sw4", + [DA850_EVM_BB_EXP_USER_SW5] = "user_sw5", + [DA850_EVM_BB_EXP_USER_SW6] = "user_sw6", + [DA850_EVM_BB_EXP_USER_SW7] = "user_sw7", + [DA850_EVM_BB_EXP_USER_SW8] = "user_sw8", +}; + +#define DA850_N_BB_USER_SW 8 + +static struct gpio_keys_button da850_evm_bb_keys[] = { + [0] = { + .type = EV_KEY, + .active_low = 1, + .wakeup = 0, + .debounce_interval = DA850_KEYS_DEBOUNCE_MS, + .code = KEY_PROG1, + .desc = NULL, /* assigned at runtime */ + .gpio = -1, /* assigned at runtime */ + }, + [1 ... DA850_N_BB_USER_SW] = { + .type = EV_SW, + .active_low = 1, + .wakeup = 0, + .debounce_interval = DA850_KEYS_DEBOUNCE_MS, + .code = -1, /* assigned at runtime */ + .desc = NULL, /* assigned at runtime */ + .gpio = -1, /* assigned at runtime */ + }, +}; + +static struct gpio_keys_platform_data da850_evm_bb_keys_pdata = { + .buttons = da850_evm_bb_keys, + .nbuttons = ARRAY_SIZE(da850_evm_bb_keys), + .poll_interval = DA850_GPIO_KEYS_POLL_MS, +}; + +static struct platform_device da850_evm_bb_keys_device = { + .name = "gpio-keys-polled", + .id = 1, + .dev = { + .platform_data = &da850_evm_bb_keys_pdata + }, +}; + +static void da850_evm_bb_keys_init(unsigned gpio) +{ + int i; + struct gpio_keys_button *button; + + button = &da850_evm_bb_keys[0]; + button->desc = (char *) + da850_evm_bb_exp[DA850_EVM_BB_EXP_USER_PB1]; + button->gpio = gpio + DA850_EVM_BB_EXP_USER_PB1; + + for (i = 0; i < DA850_N_BB_USER_SW; i++) { + button = &da850_evm_bb_keys[i + 1]; + button->code = SW_LID + i; + button->desc = (char *) + da850_evm_bb_exp[DA850_EVM_BB_EXP_USER_SW1 + i]; + button->gpio = gpio + DA850_EVM_BB_EXP_USER_SW1 + i; + } +} + +#define DA850_N_BB_USER_LED 2 + +static struct gpio_led da850_evm_bb_leds[] = { + [0 ... DA850_N_BB_USER_LED - 1] = { + .active_low = 1, + .gpio = -1, /* assigned at runtime */ + .name = NULL, /* assigned at runtime */ + }, +}; + +static struct gpio_led_platform_data da850_evm_bb_leds_pdata = { + .leds = da850_evm_bb_leds, + .num_leds = ARRAY_SIZE(da850_evm_bb_leds), +}; + +static struct platform_device da850_evm_bb_leds_device = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = &da850_evm_bb_leds_pdata + } +}; + +static void da850_evm_bb_leds_init(unsigned gpio) +{ + int i; + struct gpio_led *led; + + for (i = 0; i < DA850_N_BB_USER_LED; i++) { + led = &da850_evm_bb_leds[i]; + + led->gpio = gpio + DA850_EVM_BB_EXP_USER_LED2 + i; + led->name = + da850_evm_bb_exp[DA850_EVM_BB_EXP_USER_LED2 + i]; + } +} + +static int da850_evm_bb_expander_setup(struct i2c_client *client, + unsigned gpio, unsigned ngpio, + void *c) +{ + int ret; + + /* + * Register the switches and pushbutton on the baseboard as a gpio-keys + * device. + */ + da850_evm_bb_keys_init(gpio); + ret = platform_device_register(&da850_evm_bb_keys_device); + if (ret) { + pr_warning("Could not register baseboard GPIO expander keys"); + goto io_exp_setup_sw_fail; + } + + da850_evm_bb_leds_init(gpio); + ret = platform_device_register(&da850_evm_bb_leds_device); + if (ret) { + pr_warning("Could not register baseboard GPIO expander LEDS"); + goto io_exp_setup_leds_fail; + } + + return 0; + +io_exp_setup_leds_fail: + platform_device_unregister(&da850_evm_bb_keys_device); +io_exp_setup_sw_fail: + return ret; +} + +static int da850_evm_bb_expander_teardown(struct i2c_client *client, + unsigned gpio, unsigned ngpio, void *c) +{ + platform_device_unregister(&da850_evm_bb_leds_device); + platform_device_unregister(&da850_evm_bb_keys_device); + + return 0; +} + static struct pca953x_platform_data da850_evm_ui_expander_info = { .gpio_base = DAVINCI_N_GPIO, .setup = da850_evm_ui_expander_setup, @@ -437,6 +613,13 @@ static struct pca953x_platform_data da850_evm_ui_expander_info = { .names = da850_evm_ui_exp, }; +static struct pca953x_platform_data da850_evm_bb_expander_info = { + .gpio_base = DA850_BB_EXPANDER_GPIO_BASE, + .setup = da850_evm_bb_expander_setup, + .teardown = da850_evm_bb_expander_teardown, + .names = da850_evm_bb_exp, +}; + static struct i2c_board_info __initdata da850_evm_i2c_devices[] = { { I2C_BOARD_INFO("tlv320aic3x", 0x18), @@ -445,6 +628,10 @@ static struct i2c_board_info __initdata da850_evm_i2c_devices[] = { I2C_BOARD_INFO("tca6416", 0x20), .platform_data = &da850_evm_ui_expander_info, }, + { + I2C_BOARD_INFO("tca6416", 0x21), + .platform_data = &da850_evm_bb_expander_info, + }, }; static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = { |