diff options
| author |   Sascha Hauer <s.hauer@pengutronix.de> | 2009-01-26 17:31:02 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-03-13 10:34:09 +0100 |
| commit | 1512222b105beaff7b7fe11aa4220bcd0088e421 (patch) | |
| tree | 43b8d229f9b89a70e7174111b3978dc26726fbcf /drivers/video/imxfb.c | |
| parent | [ARM] pcm038: Add framebuffer support (diff) | |
| download | linux-dev-1512222b105beaff7b7fe11aa4220bcd0088e421.tar.xz linux-dev-1512222b105beaff7b7fe11aa4220bcd0088e421.zip | |
imxfb: add 18 bit support
v2: As pointed out by Hans J. Koch we have to claim we can do 24bit to
make software like X work. We are lucky on i.MX that 18bit support
has the necessary gaps in the fields to do so.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/video/imxfb.c')
| -rw-r--r-- | drivers/video/imxfb.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c index 629d66f32300..5c61286d7ff5 100644 --- a/drivers/video/imxfb.c +++ b/drivers/video/imxfb.c @@ -14,7 +14,6 @@ * linux-arm-kernel@lists.arm.linux.org.uk */ - #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> @@ -159,6 +158,17 @@ struct imxfb_info { #define MIN_XRES 64 #define MIN_YRES 64 +/* Actually this really is 18bit support, the lowest 2 bits of each colour + * are unused in hardware. We claim to have 24bit support to make software + * like X work, which does not support 18bit. + */ +static struct imxfb_rgb def_rgb_18 = { + .red = {.offset = 16, .length = 8,}, + .green = {.offset = 8, .length = 8,}, + .blue = {.offset = 0, .length = 8,}, + .transp = {.offset = 0, .length = 0,}, +}; + static struct imxfb_rgb def_rgb_16_tft = { .red = {.offset = 11, .length = 5,}, .green = {.offset = 5, .length = 6,}, @@ -286,6 +296,9 @@ static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) pr_debug("var->bits_per_pixel=%d\n", var->bits_per_pixel); switch (var->bits_per_pixel) { + case 32: + rgb = &def_rgb_18; + break; case 16: default: if (readl(fbi->regs + LCDC_PCR) & PCR_TFT) @@ -327,9 +340,7 @@ static int imxfb_set_par(struct fb_info *info) struct imxfb_info *fbi = info->par; struct fb_var_screeninfo *var = &info->var; - pr_debug("set_par\n"); - - if (var->bits_per_pixel == 16) + if (var->bits_per_pixel == 16 || var->bits_per_pixel == 32) info->fix.visual = FB_VISUAL_TRUECOLOR; else if (!fbi->cmap_static) info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |