fbdev: da8xx: add support for SP10Q010 display

Add timing data for Hitachi SP10Q010 display and allow configuration
of the 4bpp palette. For 4bpp framebuffer enable reversed order of
pixels in a byte. This requires defining FB_CFB_REV_PIXELS_IN_BYTE
and additionally setting var.nonstd to the value FB_NONSTD_REV_PIX_IN_B.
Note that it is not enough to set da8xx_fb_var.nonstd to this value
statically, since FBIOPUT_VSCREENINFO ioctl might pass var struct with
.nonstd field set to zero or another value. Therefore this setting must
be adjusted in fb_check_var() according to the requested bpp value.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index a43594243186aa0a6e4f019377f148816b882844..005347a35b617de53dede8bd56244fcd57fc2b7e 100644 (file)
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -2246,6 +2246,7 @@ config FB_DA8XX
        select FB_CFB_FILLRECT
        select FB_CFB_COPYAREA
        select FB_CFB_IMAGEBLIT
+       select FB_CFB_REV_PIXELS_IN_BYTE
        ---help---
          This is the frame buffer device driver for the TI LCD controller
          found on DA8xx/OMAP-L1xx SoCs.

diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index 8f7e05143708e9a5a63264641d03261fbbb0e025..47118c75a4c07fc2190601db42d9942ad7030053 100644 (file)
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -239,6 +239,20 @@ static struct da8xx_panel known_lcd_panels[] = {
                .pxl_clk = 7833600,
                .invert_pxl_clk = 0,
        },
+       [2] = {
+               /* Hitachi SP10Q010 */
+               .name = "SP10Q010",
+               .width = 320,
+               .height = 240,
+               .hfp = 10,
+               .hbp = 10,
+               .hsw = 10,
+               .vfp = 10,
+               .vbp = 10,
+               .vsw = 10,
+               .pxl_clk = 7833600,
+               .invert_pxl_clk = 0,
+       },
 };
 
 /* Enable the Raster Engine of the LCD Controller */
@@ -547,7 +561,26 @@ static int fb_setcolreg(unsigned regno, unsigned red, unsigned green,
        if (info->fix.visual == FB_VISUAL_DIRECTCOLOR)
                return 1;
 
-       if (info->var.bits_per_pixel == 8) {
+       if (info->var.bits_per_pixel == 4) {
+               if (regno > 15)
+                       return 1;
+
+               if (info->var.grayscale) {
+                       pal = regno;
+               } else {
+                       red >>= 4;
+                       green >>= 8;
+                       blue >>= 12;
+
+                       pal = (red & 0x0f00);
+                       pal |= (green & 0x00f0);
+                       pal |= (blue & 0x000f);
+               }
+               if (regno == 0)
+                       pal |= 0x2000;
+               palette[regno] = pal;
+
+       } else if (info->var.bits_per_pixel == 8) {
                red >>= 4;
                green >>= 8;
                blue >>= 12;
@@ -802,6 +835,7 @@ static int fb_check_var(struct fb_var_screeninfo *var,
                var->blue.length = 8;
                var->transp.offset = 0;
                var->transp.length = 0;
+               var->nonstd = 0;
                break;
        case 4:
                var->red.offset = 0;
@@ -812,6 +846,7 @@ static int fb_check_var(struct fb_var_screeninfo *var,
                var->blue.length = 4;
                var->transp.offset = 0;
                var->transp.length = 0;
+               var->nonstd = FB_NONSTD_REV_PIX_IN_B;
                break;
        case 16:                /* RGB 565 */
                var->red.offset = 11;
@@ -822,6 +857,7 @@ static int fb_check_var(struct fb_var_screeninfo *var,
                var->blue.length = 5;
                var->transp.offset = 0;
                var->transp.length = 0;
+               var->nonstd = 0;
                break;
        default:
                err = -EINVAL;