OMAP: AM3517: Enable DSS2 for AM3517EVM board

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
[tomi.valkeinen@nokia.com: removed defconfig changes]
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

1 files changed, 145 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c
index b4e6eca0e8a9..54af5f8d8184 100644
--- a/arch/arm/mach-omap2/board-am3517evm.c
+++ b/arch/arm/mach-omap2/board-am3517evm.c
@@ -29,9 +29,151 @@
 #include <plat/board.h>
 #include <plat/common.h>
 #include <plat/usb.h>
+#include <plat/display.h>
 
 #include "mux.h"
 
+#define LCD_PANEL_PWR           176
+#define LCD_PANEL_BKLIGHT_PWR   182
+#define LCD_PANEL_PWM           181
+
+static int lcd_enabled;
+static int dvi_enabled;
+
+static void __init am3517_evm_display_init(void)
+{
+        int r;
+
+        omap_mux_init_gpio(LCD_PANEL_PWR, OMAP_PIN_INPUT_PULLUP);
+        omap_mux_init_gpio(LCD_PANEL_BKLIGHT_PWR, OMAP_PIN_INPUT_PULLDOWN);
+        omap_mux_init_gpio(LCD_PANEL_PWM, OMAP_PIN_INPUT_PULLDOWN);
+        /*
+         * Enable GPIO 182 = LCD Backlight Power
+         */
+        r = gpio_request(LCD_PANEL_BKLIGHT_PWR, "lcd_backlight_pwr");
+        if (r) {
+                printk(KERN_ERR "failed to get lcd_backlight_pwr\n");
+                return;
+        }
+        gpio_direction_output(LCD_PANEL_BKLIGHT_PWR, 1);
+        /*
+         * Enable GPIO 181 = LCD Panel PWM
+         */
+        r = gpio_request(LCD_PANEL_PWM, "lcd_pwm");
+        if (r) {
+                printk(KERN_ERR "failed to get lcd_pwm\n");
+                goto err_1;
+        }
+        gpio_direction_output(LCD_PANEL_PWM, 1);
+        /*
+         * Enable GPIO 176 = LCD Panel Power enable pin
+         */
+        r = gpio_request(LCD_PANEL_PWR, "lcd_panel_pwr");
+        if (r) {
+                printk(KERN_ERR "failed to get lcd_panel_pwr\n");
+                goto err_2;
+        }
+        gpio_direction_output(LCD_PANEL_PWR, 1);
+
+        printk(KERN_INFO "Display initialized successfully\n");
+        return;
+
+err_2:
+        gpio_free(LCD_PANEL_PWM);
+err_1:
+        gpio_free(LCD_PANEL_BKLIGHT_PWR);
+}
+
+static int am3517_evm_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_PANEL_PWR, 1);
+        lcd_enabled = 1;
+
+        return 0;
+}
+
+static void am3517_evm_panel_disable_lcd(struct omap_dss_device *dssdev)
+{
+        gpio_set_value(LCD_PANEL_PWR, 0);
+        lcd_enabled = 0;
+}
+
+static struct omap_dss_device am3517_evm_lcd_device = {
+        .type                   = OMAP_DISPLAY_TYPE_DPI,
+        .name                   = "lcd",
+        .driver_name            = "sharp_lq_panel",
+        .phy.dpi.data_lines     = 16,
+        .platform_enable        = am3517_evm_panel_enable_lcd,
+        .platform_disable       = am3517_evm_panel_disable_lcd,
+};
+
+static int am3517_evm_panel_enable_tv(struct omap_dss_device *dssdev)
+{
+        return 0;
+}
+
+static void am3517_evm_panel_disable_tv(struct omap_dss_device *dssdev)
+{
+}
+
+static struct omap_dss_device am3517_evm_tv_device = {
+        .type                   = OMAP_DISPLAY_TYPE_VENC,
+        .name                   = "tv",
+        .driver_name            = "venc",
+        .phy.venc.type          = OMAP_DSS_VENC_TYPE_SVIDEO,
+        .platform_enable        = am3517_evm_panel_enable_tv,
+        .platform_disable       = am3517_evm_panel_disable_tv,
+};
+
+static int am3517_evm_panel_enable_dvi(struct omap_dss_device *dssdev)
+{
+        if (lcd_enabled) {
+                printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
+                return -EINVAL;
+        }
+        dvi_enabled = 1;
+
+        return 0;
+}
+
+static void am3517_evm_panel_disable_dvi(struct omap_dss_device *dssdev)
+{
+        dvi_enabled = 0;
+}
+
+static struct omap_dss_device am3517_evm_dvi_device = {
+        .type                   = OMAP_DISPLAY_TYPE_DPI,
+        .name                   = "dvi",
+        .driver_name            = "generic_panel",
+        .phy.dpi.data_lines     = 24,
+        .platform_enable        = am3517_evm_panel_enable_dvi,
+        .platform_disable       = am3517_evm_panel_disable_dvi,
+};
+
+static struct omap_dss_device *am3517_evm_dss_devices[] = {
+        &am3517_evm_lcd_device,
+        &am3517_evm_tv_device,
+        &am3517_evm_dvi_device,
+};
+
+static struct omap_dss_board_info am3517_evm_dss_data = {
+        .num_devices    = ARRAY_SIZE(am3517_evm_dss_devices),
+        .devices        = am3517_evm_dss_devices,
+        .default_device = &am3517_evm_lcd_device,
+};
+
+struct platform_device am3517_evm_dss_device = {
+        .name           = "omapdss",
+        .id             = -1,
+        .dev            = {
+                .platform_data  = &am3517_evm_dss_data,
+        },
+};
+
 /*
  * Board initialization
  */
@@ -39,6 +181,7 @@ static struct omap_board_config_kernel am3517_evm_config[] __initdata = {
 };
 
 static struct platform_device *am3517_evm_devices[] __initdata = {
+        &am3517_evm_dss_device,
 };
 
 static void __init am3517_evm_init_irq(void)
@@ -78,6 +221,8 @@ static void __init am3517_evm_init(void)
 
         omap_serial_init();
         usb_ehci_init(&ehci_pdata);
+        /* DSS */
+        am3517_evm_display_init();
 }
 
 static void __init am3517_evm_map_io(void)