omap3: cm-t35: add DSS2 display support

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

1 files changed, 238 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/board-cm-t35.c b/arch/arm/mach-omap2/board-cm-t35.c
index 2626a9f8a73a..85b45437d51a 100644
--- a/arch/arm/mach-omap2/board-cm-t35.c
+++ b/arch/arm/mach-omap2/board-cm-t35.c
@@ -32,6 +32,9 @@
 #include <linux/i2c/twl.h>
 #include <linux/regulator/machine.h>
 
+#include <linux/spi/spi.h>
+#include <linux/spi/tdo24m.h>
+
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -41,6 +44,7 @@
 #include <plat/nand.h>
 #include <plat/gpmc.h>
 #include <plat/usb.h>
+#include <plat/display.h>
 
 #include <mach/hardware.h>
 
@@ -248,7 +252,6 @@ static inline void cm_t35_init_nand(void) {}
 
 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
-#include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 
 #include <plat/mcspi.h>
@@ -304,6 +307,193 @@ static void __init cm_t35_init_ads7846(void)
 static inline void cm_t35_init_ads7846(void) {}
 #endif
 
+#define CM_T35_LCD_EN_GPIO 157
+#define CM_T35_LCD_BL_GPIO 58
+#define CM_T35_DVI_EN_GPIO 54
+
+static int lcd_bl_gpio;
+static int lcd_en_gpio;
+static int dvi_en_gpio;
+
+static int lcd_enabled;
+static int dvi_enabled;
+
+static int cm_t35_panel_enable_lcd(struct omap_dss_device *dssdev)
+{
+        if (dvi_enabled) {
+                printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
+                return -EINVAL;
+        }
+
+        gpio_set_value(lcd_en_gpio, 1);
+        gpio_set_value(lcd_bl_gpio, 1);
+
+        lcd_enabled = 1;
+
+        return 0;
+}
+
+static void cm_t35_panel_disable_lcd(struct omap_dss_device *dssdev)
+{
+        lcd_enabled = 0;
+
+        gpio_set_value(lcd_bl_gpio, 0);
+        gpio_set_value(lcd_en_gpio, 0);
+}
+
+static int cm_t35_panel_enable_dvi(struct omap_dss_device *dssdev)
+{
+        if (lcd_enabled) {
+                printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
+                return -EINVAL;
+        }
+
+        gpio_set_value(dvi_en_gpio, 0);
+        dvi_enabled = 1;
+
+        return 0;
+}
+
+static void cm_t35_panel_disable_dvi(struct omap_dss_device *dssdev)
+{
+        gpio_set_value(dvi_en_gpio, 1);
+        dvi_enabled = 0;
+}
+
+static int cm_t35_panel_enable_tv(struct omap_dss_device *dssdev)
+{
+        return 0;
+}
+
+static void cm_t35_panel_disable_tv(struct omap_dss_device *dssdev)
+{
+}
+
+static struct omap_dss_device cm_t35_lcd_device = {
+        .name                   = "lcd",
+        .driver_name            = "toppoly_tdo35s_panel",
+        .type                   = OMAP_DISPLAY_TYPE_DPI,
+        .phy.dpi.data_lines     = 18,
+        .platform_enable        = cm_t35_panel_enable_lcd,
+        .platform_disable       = cm_t35_panel_disable_lcd,
+};
+
+static struct omap_dss_device cm_t35_dvi_device = {
+        .name                   = "dvi",
+        .driver_name            = "generic_panel",
+        .type                   = OMAP_DISPLAY_TYPE_DPI,
+        .phy.dpi.data_lines     = 24,
+        .platform_enable        = cm_t35_panel_enable_dvi,
+        .platform_disable       = cm_t35_panel_disable_dvi,
+};
+
+static struct omap_dss_device cm_t35_tv_device = {
+        .name                   = "tv",
+        .driver_name            = "venc",
+        .type                   = OMAP_DISPLAY_TYPE_VENC,
+        .phy.venc.type          = OMAP_DSS_VENC_TYPE_SVIDEO,
+        .platform_enable        = cm_t35_panel_enable_tv,
+        .platform_disable       = cm_t35_panel_disable_tv,
+};
+
+static struct omap_dss_device *cm_t35_dss_devices[] = {
+        &cm_t35_lcd_device,
+        &cm_t35_dvi_device,
+        &cm_t35_tv_device,
+};
+
+static struct omap_dss_board_info cm_t35_dss_data = {
+        .num_devices    = ARRAY_SIZE(cm_t35_dss_devices),
+        .devices        = cm_t35_dss_devices,
+        .default_device = &cm_t35_dvi_device,
+};
+
+static struct platform_device cm_t35_dss_device = {
+        .name           = "omapdss",
+        .id             = -1,
+        .dev            = {
+                .platform_data = &cm_t35_dss_data,
+        },
+};
+
+static struct omap2_mcspi_device_config tdo24m_mcspi_config = {
+        .turbo_mode     = 0,
+        .single_channel = 1,    /* 0: slave, 1: master */
+};
+
+static struct tdo24m_platform_data tdo24m_config = {
+        .model = TDO35S,
+};
+
+static struct spi_board_info cm_t35_lcd_spi_board_info[] __initdata = {
+        {
+                .modalias               = "tdo24m",
+                .bus_num                = 4,
+                .chip_select            = 0,
+                .max_speed_hz           = 1000000,
+                .controller_data        = &tdo24m_mcspi_config,
+                .platform_data          = &tdo24m_config,
+        },
+};
+
+static void __init cm_t35_init_display(void)
+{
+        int err;
+
+        lcd_en_gpio = CM_T35_LCD_EN_GPIO;
+        lcd_bl_gpio = CM_T35_LCD_BL_GPIO;
+        dvi_en_gpio = CM_T35_DVI_EN_GPIO;
+
+        spi_register_board_info(cm_t35_lcd_spi_board_info,
+                                ARRAY_SIZE(cm_t35_lcd_spi_board_info));
+
+        err = gpio_request(lcd_en_gpio, "LCD RST");
+        if (err) {
+                pr_err("CM-T35: failed to get LCD reset GPIO\n");
+                goto out;
+        }
+
+        err = gpio_request(lcd_bl_gpio, "LCD BL");
+        if (err) {
+                pr_err("CM-T35: failed to get LCD backlight control GPIO\n");
+                goto err_lcd_bl;
+        }
+
+        err = gpio_request(dvi_en_gpio, "DVI EN");
+        if (err) {
+                pr_err("CM-T35: failed to get DVI reset GPIO\n");
+                goto err_dvi_en;
+        }
+
+        gpio_export(lcd_en_gpio, 0);
+        gpio_export(lcd_bl_gpio, 0);
+        gpio_export(dvi_en_gpio, 0);
+        gpio_direction_output(lcd_en_gpio, 0);
+        gpio_direction_output(lcd_bl_gpio, 0);
+        gpio_direction_output(dvi_en_gpio, 1);
+
+        msleep(50);
+        gpio_set_value(lcd_en_gpio, 1);
+
+        err = platform_device_register(&cm_t35_dss_device);
+        if (err) {
+                pr_err("CM-T35: failed to register DSS device\n");
+                goto err_dev_reg;
+        }
+
+        return;
+
+err_dev_reg:
+        gpio_free(dvi_en_gpio);
+err_dvi_en:
+        gpio_free(lcd_bl_gpio);
+err_lcd_bl:
+        gpio_free(lcd_en_gpio);
+out:
+
+        return;
+}
+
 static struct regulator_consumer_supply cm_t35_vmmc1_supply = {
         .supply                 = "vmmc",
 };
@@ -312,6 +502,16 @@ static struct regulator_consumer_supply cm_t35_vsim_supply = {
         .supply                 = "vmmc_aux",
 };
 
+static struct regulator_consumer_supply cm_t35_vdac_supply = {
+        .supply         = "vdda_dac",
+        .dev            = &cm_t35_dss_device.dev,
+};
+
+static struct regulator_consumer_supply cm_t35_vdvi_supply = {
+        .supply         = "vdvi",
+        .dev            = &cm_t35_dss_device.dev,
+};
+
 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 static struct regulator_init_data cm_t35_vmmc1 = {
         .constraints = {
@@ -342,6 +542,35 @@ static struct regulator_init_data cm_t35_vsim = {
         .consumer_supplies      = &cm_t35_vsim_supply,
 };
 
+/* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
+static struct regulator_init_data cm_t35_vdac = {
+        .constraints = {
+                .min_uV                 = 1800000,
+                .max_uV                 = 1800000,
+                .valid_modes_mask       = REGULATOR_MODE_NORMAL
+                                        | REGULATOR_MODE_STANDBY,
+                .valid_ops_mask         = REGULATOR_CHANGE_MODE
+                                        | REGULATOR_CHANGE_STATUS,
+        },
+        .num_consumer_supplies  = 1,
+        .consumer_supplies      = &cm_t35_vdac_supply,
+};
+
+/* VPLL2 for digital video outputs */
+static struct regulator_init_data cm_t35_vpll2 = {
+        .constraints = {
+                .name                   = "VDVI",
+                .min_uV                 = 1800000,
+                .max_uV                 = 1800000,
+                .valid_modes_mask       = REGULATOR_MODE_NORMAL
+                                        | REGULATOR_MODE_STANDBY,
+                .valid_ops_mask         = REGULATOR_CHANGE_MODE
+                                        | REGULATOR_CHANGE_STATUS,
+        },
+        .num_consumer_supplies  = 1,
+        .consumer_supplies      = &cm_t35_vdvi_supply,
+};
+
 static struct twl4030_usb_data cm_t35_usb_data = {
         .usb_mode       = T2_USB_MODE_ULPI,
 };
@@ -445,6 +674,8 @@ static struct twl4030_platform_data cm_t35_twldata = {
         .gpio           = &cm_t35_gpio_data,
         .vmmc1          = &cm_t35_vmmc1,
         .vsim           = &cm_t35_vsim,
+        .vdac           = &cm_t35_vdac,
+        .vpll2          = &cm_t35_vpll2,
 };
 
 static struct i2c_board_info __initdata cm_t35_i2c_boardinfo[] = {
@@ -568,6 +799,11 @@ static struct omap_board_mux board_mux[] __initdata = {
         OMAP3_MUX(DSS_DATA22, OMAP_MUX_MODE0 | OMAP_PIN_OUTPUT),
         OMAP3_MUX(DSS_DATA23, OMAP_MUX_MODE0 | OMAP_PIN_OUTPUT),
 
+        /* display controls */
+        OMAP3_MUX(MCBSP1_FSR, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
+        OMAP3_MUX(GPMC_NCS7, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
+        OMAP3_MUX(GPMC_NCS3, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
+
         /* TPS IRQ */
         OMAP3_MUX(SYS_NIRQ, OMAP_MUX_MODE0 | OMAP_WAKEUP_EN | \
                   OMAP_PIN_INPUT_PULLUP),
@@ -584,6 +820,7 @@ static void __init cm_t35_init(void)
         cm_t35_init_ads7846();
         cm_t35_init_ethernet();
         cm_t35_init_led();
+        cm_t35_init_display();
 
         usb_musb_init();
 }