@@ -431,6 +431,220 @@ 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),
+ .rep = 0, /* disable auto-repeat */
+ .poll_interval = DA850_GPIO_KEYS_POLL_MS,
+};
+
+static struct platform_device da850_evm_bb_keys_device = {
+ .name = "gpio-keys",
+ .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;
+ int deep_sleep_en, sw_rst;
+
+ deep_sleep_en = gpio + DA850_EVM_BB_EXP_DEEP_SLEEP_EN;
+ sw_rst = gpio + DA850_EVM_BB_EXP_SW_RST;
+
+ /* Do not allow sysfs control of deep_sleep_en */
+ ret = gpio_request(deep_sleep_en,
+ da850_evm_bb_exp[DA850_EVM_BB_EXP_DEEP_SLEEP_EN]);
+ if (ret) {
+ pr_warning("Cannot open IO expander pin %d\n", deep_sleep_en);
+ goto io_exp_setup_deep_sleep_en_fail;
+ }
+ /* do not drive a value on deep_sleep_en */
+ gpio_direction_input(deep_sleep_en);
+
+ /* Do not allow sysfs control of sw_rst */
+ ret = gpio_request(sw_rst,
+ da850_evm_bb_exp[DA850_EVM_BB_EXP_SW_RST]);
+ if (ret) {
+ pr_warning("Cannot open IO expander pin %d\n", sw_rst);
+ goto io_exp_setup_sw_rst_fail;
+ }
+ /* do not drive a value on sw_rst */
+ gpio_direction_input(sw_rst);
+
+ /*
+ * 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 switches"
+ " device\n");
+ 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 "
+ "device\n");
+ 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:
+ gpio_free(sw_rst);
+io_exp_setup_sw_rst_fail:
+ gpio_free(deep_sleep_en);
+io_exp_setup_deep_sleep_en_fail:
+ return ret;
+}
+
+static int da850_evm_bb_expander_teardown(struct i2c_client *client,
+ unsigned gpio, unsigned ngpio, void *c)
+{
+ int deep_sleep_en, sw_rst;
+
+ deep_sleep_en = gpio + DA850_EVM_BB_EXP_DEEP_SLEEP_EN;
+ sw_rst = gpio + DA850_EVM_BB_EXP_SW_RST;
+
+ platform_device_unregister(&da850_evm_bb_leds_device);
+ platform_device_unregister(&da850_evm_bb_keys_device);
+ gpio_free(sw_rst);
+ gpio_free(deep_sleep_en);
+
+ return 0;
+}
+
static struct pca953x_platform_data da850_evm_ui_expander_info = {
.gpio_base = DAVINCI_N_GPIO,
.setup = da850_evm_ui_expander_setup,
@@ -438,6 +652,13 @@ 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),
@@ -446,6 +667,10 @@ 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 = {