video: Add SHARP LQ084S3LG01 LCD support on P1022DS

The SHARP LQ084S3LG01 is a TFT LCD used on the P1022DS (revision "C") board.
This device only supports 800x600 resolution, so if that resolution is selected,
assume that this is the device.  The device is attached to the LVDS port
on the P1022DS board.

The existing 800x600 entry (for the PDM360NG board) is actually 800x480,
so we fix that.  To support two different 800x resolutions, the Y-resolution
is now passed to fsl_diu_init() and both values are used to pick the proper
fb_videomode structure.

The data for the 800x600 video mode is originally from Jiang Yutang.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Jiang Yutang <b14898@freescale.com>

1 files changed, 36 insertions, 15 deletions

diff --git a/drivers/video/fsl_diu_fb.c b/drivers/video/fsl_diu_fb.c
index 0709849..e1d6c26 100644
--- a/drivers/video/fsl_diu_fb.c
+++ b/drivers/video/fsl_diu_fb.c
@@ -78,13 +78,9 @@ struct fb_videomode {
 	unsigned int flag;
 };
 
-#define FB_SYNC_VERT_HIGH_ACT	2	/* vertical sync high active	*/
-#define FB_SYNC_COMP_HIGH_ACT	8	/* composite sync high active   */
-#define FB_VMODE_NONINTERLACED  0	/* non interlaced */
-
 /* This setting is used for the ifm pdm360ng with PRIMEVIEW PM070WL3 */
-static struct fb_videomode fsl_diu_mode_800 = {
-	.name		= "800x600-60",
+static struct fb_videomode fsl_diu_mode_800_480 = {
+	.name		= "800x480-60",
 	.refresh	= 60,
 	.xres		= 800,
 	.yres		= 480,
@@ -99,13 +95,30 @@ static struct fb_videomode fsl_diu_mode_800 = {
 	.vmode		= FB_VMODE_NONINTERLACED
 };
 
+/* For the SHARP LQ084S3LG01, used on the P1022DS board */
+static struct fb_videomode fsl_diu_mode_800_600 = {
+	.name		= "800x600-60",
+	.refresh	= 60,
+	.xres		= 800,
+	.yres		= 600,
+	.pixclock	= 25000,
+	.left_margin	= 88,
+	.right_margin	= 40,
+	.upper_margin	= 23,
+	.lower_margin	= 1,
+	.hsync_len	= 128,
+	.vsync_len	= 4,
+	.sync		= FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	.vmode		= FB_VMODE_NONINTERLACED
+};
+
 /*
  * These parameters give default parameters
  * for video output 1024x768,
  * FIXME - change timing to proper amounts
  * hsync 31.5kHz, vsync 60Hz
  */
-static struct fb_videomode fsl_diu_mode_1024 = {
+static struct fb_videomode fsl_diu_mode_1024_768 = {
 	.name		= "1024x768-60",
 	.refresh	= 60,
 	.xres		= 1024,
@@ -121,7 +134,7 @@ static struct fb_videomode fsl_diu_mode_1024 = {
 	.vmode		= FB_VMODE_NONINTERLACED
 };
 
-static struct fb_videomode fsl_diu_mode_1280 = {
+static struct fb_videomode fsl_diu_mode_1280_1024 = {
 	.name		= "1280x1024-60",
 	.refresh	= 60,
 	.xres		= 1280,
@@ -263,7 +276,7 @@ static struct diu_ad *allocate_fb(unsigned int xres, unsigned int yres,
 	return ad;
 }
 
-int fsl_diu_init(int xres, u32 pixel_format, int gamma_fix)
+int fsl_diu_init(u16 xres, u16 yres, u32 pixel_format, int gamma_fix)
 {
 	struct fb_videomode *fsl_diu_mode_db;
 	struct diu_ad *ad;
@@ -274,15 +287,23 @@ int fsl_diu_init(int xres, u32 pixel_format, int gamma_fix)
 	struct diu_addr gamma;
 	struct diu_addr cursor;
 
-	switch (xres) {
-	case 800:
-		fsl_diu_mode_db = &fsl_diu_mode_800;
+/* Convert the X,Y resolution pair into a single number */
+#define RESOLUTION(x, y) (((u32)(x) << 16) | (y))
+
+	switch (RESOLUTION(xres, yres)) {
+	case RESOLUTION(800, 480):
+		fsl_diu_mode_db = &fsl_diu_mode_800_480;
 		break;
-	case 1280:
-		fsl_diu_mode_db = &fsl_diu_mode_1280;
+	case RESOLUTION(800, 600):
+		fsl_diu_mode_db = &fsl_diu_mode_800_600;
+	case RESOLUTION(1024, 768):
+		fsl_diu_mode_db = &fsl_diu_mode_1024_768;
+	case RESOLUTION(1280, 1024):
+		fsl_diu_mode_db = &fsl_diu_mode_1280_1024;
 		break;
 	default:
-		fsl_diu_mode_db = &fsl_diu_mode_1024;
+		printf("DIU:   Unsupported resolution %ux%u\n", xres, yres);
+		return -1;
 	}
 
 	/* The AD struct for the dummy framebuffer and the FB itself */