ARM: OMAP3: Initialize more devices for LDP

Based on an earlier patches by Stanley.Miao <stanley.miao@windriver.com>
and Nishant Kamat <nskamat@ti.com>.

Note that at the ads7846 support still needs support for vaux_control
for the touchscreen to work.

Signed-off-by: Tony Lindgren <tony@atomide.com>

2 files changed, 207 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index 59ac8ed979ea..d8bc0a7dcb8d 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -16,11 +16,13 @@
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/input.h>
+#include <linux/gpio_keys.h>
 #include <linux/workqueue.h>
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
+#include <linux/regulator/machine.h>
 #include <linux/i2c/twl4030.h>
 #include <linux/io.h>
 #include <linux/smsc911x.h>
@@ -39,6 +41,7 @@
 #include <asm/delay.h>
 #include <mach/control.h>
 #include <mach/usb.h>
+#include <mach/keypad.h>
 
 #include "mmc-twl4030.h"
 
@@ -77,6 +80,165 @@ static struct platform_device ldp_smsc911x_device = {
         },
 };
 
+static int ldp_twl4030_keymap[] = {
+        KEY(0, 0, KEY_1),
+        KEY(1, 0, KEY_2),
+        KEY(2, 0, KEY_3),
+        KEY(0, 1, KEY_4),
+        KEY(1, 1, KEY_5),
+        KEY(2, 1, KEY_6),
+        KEY(3, 1, KEY_F5),
+        KEY(0, 2, KEY_7),
+        KEY(1, 2, KEY_8),
+        KEY(2, 2, KEY_9),
+        KEY(3, 2, KEY_F6),
+        KEY(0, 3, KEY_F7),
+        KEY(1, 3, KEY_0),
+        KEY(2, 3, KEY_F8),
+        PERSISTENT_KEY(4, 5),
+        KEY(4, 4, KEY_VOLUMEUP),
+        KEY(5, 5, KEY_VOLUMEDOWN),
+        0
+};
+
+static struct twl4030_keypad_data ldp_kp_twl4030_data = {
+        .rows           = 6,
+        .cols           = 6,
+        .keymap         = ldp_twl4030_keymap,
+        .keymapsize     = ARRAY_SIZE(ldp_twl4030_keymap),
+        .rep            = 1,
+};
+
+static struct gpio_keys_button ldp_gpio_keys_buttons[] = {
+        [0] = {
+                .code                   = KEY_ENTER,
+                .gpio                   = 101,
+                .desc                   = "enter sw",
+                .active_low             = 1,
+                .debounce_interval      = 30,
+        },
+        [1] = {
+                .code                   = KEY_F1,
+                .gpio                   = 102,
+                .desc                   = "func 1",
+                .active_low             = 1,
+                .debounce_interval      = 30,
+        },
+        [2] = {
+                .code                   = KEY_F2,
+                .gpio                   = 103,
+                .desc                   = "func 2",
+                .active_low             = 1,
+                .debounce_interval      = 30,
+        },
+        [3] = {
+                .code                   = KEY_F3,
+                .gpio                   = 104,
+                .desc                   = "func 3",
+                .active_low             = 1,
+                .debounce_interval      = 30,
+        },
+        [4] = {
+                .code                   = KEY_F4,
+                .gpio                   = 105,
+                .desc                   = "func 4",
+                .active_low             = 1,
+                .debounce_interval      = 30,
+        },
+        [5] = {
+                .code                   = KEY_LEFT,
+                .gpio                   = 106,
+                .desc                   = "left sw",
+                .active_low             = 1,
+                .debounce_interval      = 30,
+        },
+        [6] = {
+                .code                   = KEY_RIGHT,
+                .gpio                   = 107,
+                .desc                   = "right sw",
+                .active_low             = 1,
+                .debounce_interval      = 30,
+        },
+        [7] = {
+                .code                   = KEY_UP,
+                .gpio                   = 108,
+                .desc                   = "up sw",
+                .active_low             = 1,
+                .debounce_interval      = 30,
+        },
+        [8] = {
+                .code                   = KEY_DOWN,
+                .gpio                   = 109,
+                .desc                   = "down sw",
+                .active_low             = 1,
+                .debounce_interval      = 30,
+        },
+};
+
+static struct gpio_keys_platform_data ldp_gpio_keys = {
+        .buttons                = ldp_gpio_keys_buttons,
+        .nbuttons               = ARRAY_SIZE(ldp_gpio_keys_buttons),
+        .rep                    = 1,
+};
+
+static struct platform_device ldp_gpio_keys_device = {
+        .name           = "gpio-keys",
+        .id             = -1,
+        .dev            = {
+                .platform_data  = &ldp_gpio_keys,
+        },
+};
+
+static int ts_gpio;
+
+/**
+ * @brief ads7846_dev_init : Requests & sets GPIO line for pen-irq
+ *
+ * @return - void. If request gpio fails then Flag KERN_ERR.
+ */
+static void ads7846_dev_init(void)
+{
+        if (gpio_request(ts_gpio, "ads7846 irq") < 0) {
+                printk(KERN_ERR "can't get ads746 pen down GPIO\n");
+                return;
+        }
+
+        gpio_direction_input(ts_gpio);
+        omap_set_gpio_debounce(ts_gpio, 1);
+        omap_set_gpio_debounce_time(ts_gpio, 0xa);
+}
+
+static int ads7846_get_pendown_state(void)
+{
+        return !gpio_get_value(ts_gpio);
+}
+
+static struct ads7846_platform_data tsc2046_config __initdata = {
+        .get_pendown_state      = ads7846_get_pendown_state,
+        .keep_vref_on           = 1,
+};
+
+static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
+        .turbo_mode     = 0,
+        .single_channel = 1,    /* 0: slave, 1: master */
+};
+
+static struct spi_board_info ldp_spi_board_info[] __initdata = {
+        [0] = {
+                /*
+                 * TSC2046 operates at a max freqency of 2MHz, so
+                 * operate slightly below at 1.5MHz
+                 */
+                .modalias               = "ads7846",
+                .bus_num                = 1,
+                .chip_select            = 0,
+                .max_speed_hz           = 1500000,
+                .controller_data        = &tsc2046_mcspi_config,
+                .irq                    = 0,
+                .platform_data          = &tsc2046_config,
+        },
+};
+
 static inline void __init ldp_init_smsc911x(void)
 {
         int eth_cs;
@@ -132,18 +294,49 @@ static struct omap_board_config_kernel ldp_config[] __initdata = {
         { OMAP_TAG_LCD,         &ldp_lcd_config },
 };
 
+static struct twl4030_usb_data ldp_usb_data = {
+        .usb_mode       = T2_USB_MODE_ULPI,
+};
+
 static struct twl4030_gpio_platform_data ldp_gpio_data = {
         .gpio_base      = OMAP_MAX_GPIO_LINES,
         .irq_base       = TWL4030_GPIO_IRQ_BASE,
         .irq_end        = TWL4030_GPIO_IRQ_END,
 };
 
+static struct twl4030_madc_platform_data ldp_madc_data = {
+        .irq_line       = 1,
+};
+
+static struct regulator_consumer_supply ldp_vmmc1_supply = {
+        .supply                 = "vmmc",
+};
+
+/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
+static struct regulator_init_data ldp_vmmc1 = {
+        .constraints = {
+                .min_uV                 = 1850000,
+                .max_uV                 = 3150000,
+                .valid_modes_mask       = REGULATOR_MODE_NORMAL
+                                        | REGULATOR_MODE_STANDBY,
+                .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
+                                        | REGULATOR_CHANGE_MODE
+                                        | REGULATOR_CHANGE_STATUS,
+        },
+        .num_consumer_supplies  = 1,
+        .consumer_supplies      = &ldp_vmmc1_supply,
+};
+
 static struct twl4030_platform_data ldp_twldata = {
         .irq_base       = TWL4030_IRQ_BASE,
         .irq_end        = TWL4030_IRQ_END,
 
         /* platform_data for children goes here */
+        .madc           = &ldp_madc_data,
+        .usb            = &ldp_usb_data,
+        .vmmc1          = &ldp_vmmc1,
         .gpio           = &ldp_gpio_data,
+        .keypad         = &ldp_kp_twl4030_data,
 };
 
 static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
@@ -177,6 +370,7 @@ static struct twl4030_hsmmc_info mmc[] __initdata = {
 static struct platform_device *ldp_devices[] __initdata = {
         &ldp_smsc911x_device,
         &ldp_lcd_device,
+        &ldp_gpio_keys_device,
 };
 
 static void __init omap_ldp_init(void)
@@ -185,9 +379,17 @@ static void __init omap_ldp_init(void)
         platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
         omap_board_config = ldp_config;
         omap_board_config_size = ARRAY_SIZE(ldp_config);
+        ts_gpio = 54;
+        ldp_spi_board_info[0].irq = gpio_to_irq(ts_gpio);
+        spi_register_board_info(ldp_spi_board_info,
+                                ARRAY_SIZE(ldp_spi_board_info));
+        ads7846_dev_init();
         omap_serial_init();
-        twl4030_mmc_init(mmc);
         usb_musb_init();
+
+        twl4030_mmc_init(mmc);
+        /* link regulators to MMC adapters */
+        ldp_vmmc1_supply.dev = mmc[0].dev;
 }
 
 static void __init omap_ldp_map_io(void)
diff --git a/arch/arm/plat-omap/include/mach/keypad.h b/arch/arm/plat-omap/include/mach/keypad.h
index 232923aaf61d..45ea3ae3c995 100644
--- a/arch/arm/plat-omap/include/mach/keypad.h
+++ b/arch/arm/plat-omap/include/mach/keypad.h
@@ -33,7 +33,11 @@ struct omap_kp_platform_data {
 #define GROUP_3         (3 << 16)
 #define GROUP_MASK      GROUP_3
 
+#define KEY_PERSISTENT          0x00800000
+#define KEYNUM_MASK             0x00EFFFFF
 #define KEY(col, row, val) (((col) << 28) | ((row) << 24) | (val))
+#define PERSISTENT_KEY(col, row) (((col) << 28) | ((row) << 24) | \
+                                                KEY_PERSISTENT)
 
 #endif