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Diffstat (limited to 'arch/arm/mach-davinci/board-da850-evm.c')
-rw-r--r--arch/arm/mach-davinci/board-da850-evm.c339
1 files changed, 321 insertions, 18 deletions
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index c6e11c682e4c..b01fb2ab944a 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -17,8 +17,10 @@
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/i2c/pca953x.h>
+#include <linux/input.h>
#include <linux/mfd/tps6507x.h>
#include <linux/gpio.h>
+#include <linux/gpio_keys.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
@@ -266,34 +268,115 @@ static inline void da850_evm_setup_emac_rmii(int rmii_sel)
struct davinci_soc_info *soc_info = &davinci_soc_info;
soc_info->emac_pdata->rmii_en = 1;
- gpio_set_value(rmii_sel, 0);
+ gpio_set_value_cansleep(rmii_sel, 0);
}
#else
static inline void da850_evm_setup_emac_rmii(int rmii_sel) { }
#endif
+
+#define DA850_KEYS_DEBOUNCE_MS 10
+/*
+ * At 200ms polling interval it is possible to miss an
+ * event by tapping very lightly on the push button but most
+ * pushes do result in an event; longer intervals require the
+ * user to hold the button whereas shorter intervals require
+ * more CPU time for polling.
+ */
+#define DA850_GPIO_KEYS_POLL_MS 200
+
+enum da850_evm_ui_exp_pins {
+ DA850_EVM_UI_EXP_SEL_C = 5,
+ DA850_EVM_UI_EXP_SEL_B,
+ DA850_EVM_UI_EXP_SEL_A,
+ DA850_EVM_UI_EXP_PB8,
+ DA850_EVM_UI_EXP_PB7,
+ DA850_EVM_UI_EXP_PB6,
+ DA850_EVM_UI_EXP_PB5,
+ DA850_EVM_UI_EXP_PB4,
+ DA850_EVM_UI_EXP_PB3,
+ DA850_EVM_UI_EXP_PB2,
+ DA850_EVM_UI_EXP_PB1,
+};
+
+static const char const *da850_evm_ui_exp[] = {
+ [DA850_EVM_UI_EXP_SEL_C] = "sel_c",
+ [DA850_EVM_UI_EXP_SEL_B] = "sel_b",
+ [DA850_EVM_UI_EXP_SEL_A] = "sel_a",
+ [DA850_EVM_UI_EXP_PB8] = "pb8",
+ [DA850_EVM_UI_EXP_PB7] = "pb7",
+ [DA850_EVM_UI_EXP_PB6] = "pb6",
+ [DA850_EVM_UI_EXP_PB5] = "pb5",
+ [DA850_EVM_UI_EXP_PB4] = "pb4",
+ [DA850_EVM_UI_EXP_PB3] = "pb3",
+ [DA850_EVM_UI_EXP_PB2] = "pb2",
+ [DA850_EVM_UI_EXP_PB1] = "pb1",
+};
+
+#define DA850_N_UI_PB 8
+
+static struct gpio_keys_button da850_evm_ui_keys[] = {
+ [0 ... DA850_N_UI_PB - 1] = {
+ .type = EV_KEY,
+ .active_low = 1,
+ .wakeup = 0,
+ .debounce_interval = DA850_KEYS_DEBOUNCE_MS,
+ .code = -1, /* assigned at runtime */
+ .gpio = -1, /* assigned at runtime */
+ .desc = NULL, /* assigned at runtime */
+ },
+};
+
+static struct gpio_keys_platform_data da850_evm_ui_keys_pdata = {
+ .buttons = da850_evm_ui_keys,
+ .nbuttons = ARRAY_SIZE(da850_evm_ui_keys),
+ .poll_interval = DA850_GPIO_KEYS_POLL_MS,
+};
+
+static struct platform_device da850_evm_ui_keys_device = {
+ .name = "gpio-keys-polled",
+ .id = 0,
+ .dev = {
+ .platform_data = &da850_evm_ui_keys_pdata
+ },
+};
+
+static void da850_evm_ui_keys_init(unsigned gpio)
+{
+ int i;
+ struct gpio_keys_button *button;
+
+ for (i = 0; i < DA850_N_UI_PB; i++) {
+ button = &da850_evm_ui_keys[i];
+ button->code = KEY_F8 - i;
+ button->desc = (char *)
+ da850_evm_ui_exp[DA850_EVM_UI_EXP_PB8 + i];
+ button->gpio = gpio + DA850_EVM_UI_EXP_PB8 + i;
+ }
+}
+
static int da850_evm_ui_expander_setup(struct i2c_client *client, unsigned gpio,
unsigned ngpio, void *c)
{
int sel_a, sel_b, sel_c, ret;
- sel_a = gpio + 7;
- sel_b = gpio + 6;
- sel_c = gpio + 5;
+ sel_a = gpio + DA850_EVM_UI_EXP_SEL_A;
+ sel_b = gpio + DA850_EVM_UI_EXP_SEL_B;
+ sel_c = gpio + DA850_EVM_UI_EXP_SEL_C;
- ret = gpio_request(sel_a, "sel_a");
+ ret = gpio_request(sel_a, da850_evm_ui_exp[DA850_EVM_UI_EXP_SEL_A]);
if (ret) {
pr_warning("Cannot open UI expander pin %d\n", sel_a);
goto exp_setup_sela_fail;
}
- ret = gpio_request(sel_b, "sel_b");
+ ret = gpio_request(sel_b, da850_evm_ui_exp[DA850_EVM_UI_EXP_SEL_B]);
if (ret) {
pr_warning("Cannot open UI expander pin %d\n", sel_b);
goto exp_setup_selb_fail;
}
- ret = gpio_request(sel_c, "sel_c");
+ ret = gpio_request(sel_c, da850_evm_ui_exp[DA850_EVM_UI_EXP_SEL_C]);
if (ret) {
pr_warning("Cannot open UI expander pin %d\n", sel_c);
goto exp_setup_selc_fail;
@@ -304,6 +387,13 @@ static int da850_evm_ui_expander_setup(struct i2c_client *client, unsigned gpio,
gpio_direction_output(sel_b, 1);
gpio_direction_output(sel_c, 1);
+ da850_evm_ui_keys_init(gpio);
+ ret = platform_device_register(&da850_evm_ui_keys_device);
+ if (ret) {
+ pr_warning("Could not register UI GPIO expander push-buttons");
+ goto exp_setup_keys_fail;
+ }
+
ui_card_detected = 1;
pr_info("DA850/OMAP-L138 EVM UI card detected\n");
@@ -313,6 +403,8 @@ static int da850_evm_ui_expander_setup(struct i2c_client *client, unsigned gpio,
return 0;
+exp_setup_keys_fail:
+ gpio_free(sel_c);
exp_setup_selc_fail:
gpio_free(sel_b);
exp_setup_selb_fail:
@@ -324,14 +416,192 @@ exp_setup_sela_fail:
static int da850_evm_ui_expander_teardown(struct i2c_client *client,
unsigned gpio, unsigned ngpio, void *c)
{
+ platform_device_unregister(&da850_evm_ui_keys_device);
+
/* deselect all functionalities */
- gpio_set_value(gpio + 5, 1);
- gpio_set_value(gpio + 6, 1);
- gpio_set_value(gpio + 7, 1);
+ gpio_set_value_cansleep(gpio + DA850_EVM_UI_EXP_SEL_C, 1);
+ gpio_set_value_cansleep(gpio + DA850_EVM_UI_EXP_SEL_B, 1);
+ gpio_set_value_cansleep(gpio + DA850_EVM_UI_EXP_SEL_A, 1);
+
+ gpio_free(gpio + DA850_EVM_UI_EXP_SEL_C);
+ gpio_free(gpio + DA850_EVM_UI_EXP_SEL_B);
+ gpio_free(gpio + DA850_EVM_UI_EXP_SEL_A);
+
+ 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;
+ }
+}
- gpio_free(gpio + 5);
- gpio_free(gpio + 6);
- gpio_free(gpio + 7);
+#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;
}
@@ -340,6 +610,14 @@ static struct pca953x_platform_data da850_evm_ui_expander_info = {
.gpio_base = DAVINCI_N_GPIO,
.setup = da850_evm_ui_expander_setup,
.teardown = da850_evm_ui_expander_teardown,
+ .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[] = {
@@ -350,6 +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 = {
@@ -540,7 +822,7 @@ static struct regulator_init_data tps65070_regulator_data[] = {
{
.constraints = {
.min_uV = 950000,
- .max_uV = 1320000,
+ .max_uV = 1350000,
.valid_ops_mask = (REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_STATUS),
.boot_on = 1,
@@ -591,7 +873,7 @@ static struct tps6507x_board tps_board = {
.tps6507x_ts_init_data = &tps6507x_touchscreen_data,
};
-static struct i2c_board_info __initdata da850evm_tps65070_info[] = {
+static struct i2c_board_info __initdata da850_evm_tps65070_info[] = {
{
I2C_BOARD_INFO("tps6507x", 0x48),
.platform_data = &tps_board,
@@ -600,8 +882,8 @@ static struct i2c_board_info __initdata da850evm_tps65070_info[] = {
static int __init pmic_tps65070_init(void)
{
- return i2c_register_board_info(1, da850evm_tps65070_info,
- ARRAY_SIZE(da850evm_tps65070_info));
+ return i2c_register_board_info(1, da850_evm_tps65070_info,
+ ARRAY_SIZE(da850_evm_tps65070_info));
}
static const short da850_evm_lcdc_pins[] = {
@@ -736,6 +1018,27 @@ static struct edma_rsv_info *da850_edma_rsv[2] = {
&da850_edma_cc1_rsv,
};
+#ifdef CONFIG_CPU_FREQ
+static __init int da850_evm_init_cpufreq(void)
+{
+ switch (system_rev & 0xF) {
+ case 3:
+ da850_max_speed = 456000;
+ break;
+ case 2:
+ da850_max_speed = 408000;
+ break;
+ case 1:
+ da850_max_speed = 372000;
+ break;
+ }
+
+ return da850_register_cpufreq("pll0_sysclk3");
+}
+#else
+static __init int da850_evm_init_cpufreq(void) { return 0; }
+#endif
+
static __init void da850_evm_init(void)
{
int ret;
@@ -836,7 +1139,7 @@ static __init void da850_evm_init(void)
if (ret)
pr_warning("da850_evm_init: rtc setup failed: %d\n", ret);
- ret = da850_register_cpufreq("pll0_sysclk3");
+ ret = da850_evm_init_cpufreq();
if (ret)
pr_warning("da850_evm_init: cpufreq registration failed: %d\n",
ret);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-17 19:24:17 +0300