msm_fb: Add "Continuous Splash Screen" support for LCDC panel
Add changes to support continuous splash screen on 8x25 SKU7
for LCDC panel. Delay the MDP hardware initialisation,
keep LCDC timing generator enable during boot up, do not
disturb the GPIO/regulator configurations and skip the
panel initialization sequence during boot up.
Change-Id: Ied091b01ad2f26acdff73e3ffe158d844198923c
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-msm7627a-display.c b/arch/arm/mach-msm/board-msm7627a-display.c
index 35ea492..e305fe6 100644
--- a/arch/arm/mach-msm/board-msm7627a-display.c
+++ b/arch/arm/mach-msm/board-msm7627a-display.c
@@ -81,6 +81,7 @@
"gpio_disp_reset",
};
+static char lcdc_splash_is_enabled(void);
static int lcdc_truly_gpio_init(void)
{
int i;
@@ -103,7 +104,12 @@
lcdc_truly_gpio_table[i]);
goto truly_gpio_fail;
}
- rc = gpio_direction_output(lcdc_truly_gpio_table[i], 0);
+ if (lcdc_splash_is_enabled())
+ rc = gpio_direction_output(
+ lcdc_truly_gpio_table[i], 1);
+ else
+ rc = gpio_direction_output(
+ lcdc_truly_gpio_table[i], 0);
if (rc < 0) {
pr_err("Error direct lcdc gpio:%d\n",
lcdc_truly_gpio_table[i]);
@@ -247,6 +253,7 @@
static int sku3_lcdc_power_save(int on)
{
int rc = 0;
+ static int cont_splash_done;
if (on) {
sku3_lcdc_lcd_camera_power_onoff(1);
@@ -257,6 +264,11 @@
return rc;
}
+ if (lcdc_splash_is_enabled() && !cont_splash_done) {
+ cont_splash_done = 1;
+ return rc;
+ }
+
if (lcdc_truly_gpio_initialized) {
/*LCD reset*/
gpio_set_value(SKU3_LCDC_GPIO_DISPLAY_RESET, 1);
@@ -781,6 +793,11 @@
.cont_splash_enabled = 0x1,
};
+static char lcdc_splash_is_enabled()
+{
+ return mdp_pdata.cont_splash_enabled;
+}
+
#define GPIO_LCDC_BRDG_PD 128
#define GPIO_LCDC_BRDG_RESET_N 129
#define GPIO_LCD_DSI_SEL 125
@@ -1351,7 +1368,7 @@
ARRAY_SIZE(evb_fb_devices));
} else if (machine_is_msm7627a_qrd3() || machine_is_msm8625_qrd7()) {
sku3_lcdc_lcd_camera_power_init();
- mdp_pdata.cont_splash_enabled = 0x0;
+ mdp_pdata.cont_splash_enabled = 0x1;
platform_add_devices(qrd3_fb_devices,
ARRAY_SIZE(qrd3_fb_devices));
} else {