OMAP4: 4430SDP: Add picodlp support to board file

An on-board projector named picodlp is available for OMAP4430 SDP.

Entry for this picodlp as a panel is being added in dss_devices array to
the board file.  It needs 4 GPIO pins for interfacing with host
processor and these are defined and two of them are configured in board
file.  Two GPIOs power_on and display_select are configured here.
picodlp also needs an i2c client over i2c controller-2 at address 0x1b.

Signed-off-by: Mayuresh Janorkar <mayur@ti.com>
Signed-off-by: Mythri P K <mythripk@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 187fcae14fff..d3874a68b059 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -39,6 +39,7 @@
 #include <plat/omap4-keypad.h>
 #include <video/omapdss.h>
 #include <video/omap-panel-nokia-dsi.h>
+#include <video/omap-panel-picodlp.h>
 #include <linux/wl12xx.h>
 
 #include "mux.h"
@@ -54,6 +55,7 @@
 #define HDMI_GPIO_HPD 60 /* Hot plug pin for HDMI */
 #define HDMI_GPIO_LS_OE 41 /* Level shifter for HDMI */
 #define DISPLAY_SEL_GPIO        59      /* LCD2/PicoDLP switch */
+#define DLP_POWER_ON_GPIO       40
 
 #define GPIO_WIFI_PMENA         54
 #define GPIO_WIFI_IRQ           53
@@ -758,10 +760,59 @@ static struct omap_dss_device sdp4430_hdmi_device = {
         .channel = OMAP_DSS_CHANNEL_DIGIT,
 };
 
+static struct picodlp_panel_data sdp4430_picodlp_pdata = {
+        .picodlp_adapter_id     = 2,
+        .emu_done_gpio          = 44,
+        .pwrgood_gpio           = 45,
+};
+
+static void sdp4430_picodlp_init(void)
+{
+        int r;
+        const struct gpio picodlp_gpios[] = {
+                {DLP_POWER_ON_GPIO, GPIOF_OUT_INIT_LOW,
+                        "DLP POWER ON"},
+                {sdp4430_picodlp_pdata.emu_done_gpio, GPIOF_IN,
+                        "DLP EMU DONE"},
+                {sdp4430_picodlp_pdata.pwrgood_gpio, GPIOF_OUT_INIT_LOW,
+                        "DLP PWRGOOD"},
+        };
+
+        r = gpio_request_array(picodlp_gpios, ARRAY_SIZE(picodlp_gpios));
+        if (r)
+                pr_err("Cannot request PicoDLP GPIOs, error %d\n", r);
+}
+
+static int sdp4430_panel_enable_picodlp(struct omap_dss_device *dssdev)
+{
+        gpio_set_value(DISPLAY_SEL_GPIO, 0);
+        gpio_set_value(DLP_POWER_ON_GPIO, 1);
+
+        return 0;
+}
+
+static void sdp4430_panel_disable_picodlp(struct omap_dss_device *dssdev)
+{
+        gpio_set_value(DLP_POWER_ON_GPIO, 0);
+        gpio_set_value(DISPLAY_SEL_GPIO, 1);
+}
+
+static struct omap_dss_device sdp4430_picodlp_device = {
+        .name                   = "picodlp",
+        .driver_name            = "picodlp_panel",
+        .type                   = OMAP_DISPLAY_TYPE_DPI,
+        .phy.dpi.data_lines     = 24,
+        .channel                = OMAP_DSS_CHANNEL_LCD2,
+        .platform_enable        = sdp4430_panel_enable_picodlp,
+        .platform_disable       = sdp4430_panel_disable_picodlp,
+        .data                   = &sdp4430_picodlp_pdata,
+};
+
 static struct omap_dss_device *sdp4430_dss_devices[] = {
         &sdp4430_lcd_device,
         &sdp4430_lcd2_device,
         &sdp4430_hdmi_device,
+        &sdp4430_picodlp_device,
 };
 
 static struct omap_dss_board_info sdp4430_dss_data = {
@@ -782,6 +833,7 @@ static void omap_4430sdp_display_init(void)
 
         sdp4430_lcd_init();
         sdp4430_hdmi_mux_init();
+        sdp4430_picodlp_init();
         omap_display_init(&sdp4430_dss_data);
 }