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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-04-28 10:43:52 +0100
committerRussell King <rmk@dyn-67.arm.linux.org.uk>2005-04-28 10:43:52 +0100
commit82235e9170f19fa327361ee82a76618e60f2db47 (patch)
tree735bdadb8025241a514c672537f231c614010c61 /drivers/video
parentc4d12b98ead8bb2437f656c17e7ef065fa160e13 (diff)
downloadlinux-82235e9170f19fa327361ee82a76618e60f2db47.tar.bz2
[PATCH] ARM: Fix AMBA CLCD fb driver for 32bpp
We were supporting 24bpp. However, the pixel organisation in memory was 0RGB, so it was 24bpp in 32bit words. This means we're actually supporting 32bpp and not 24bpp. Also, add a check to ensure that we don't exceed the available framebuffer when changing display resolutions. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/amba-clcd.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c
index 075d3961a119..3e386fd4c5c6 100644
--- a/drivers/video/amba-clcd.c
+++ b/drivers/video/amba-clcd.c
@@ -146,7 +146,7 @@ clcdfb_set_bitfields(struct clcd_fb *fb, struct fb_var_screeninfo *var)
var->blue.offset = 10;
}
break;
- case 24:
+ case 32:
if (fb->panel->cntl & CNTL_LCDTFT) {
var->red.length = 8;
var->green.length = 8;
@@ -178,6 +178,12 @@ static int clcdfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
if (fb->board->check)
ret = fb->board->check(fb, var);
+
+ if (ret == 0 &&
+ var->xres_virtual * var->bits_per_pixel / 8 *
+ var->yres_virtual > fb->fb.fix.smem_len)
+ ret = -EINVAL;
+
if (ret == 0)
ret = clcdfb_set_bitfields(fb, var);