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Subject[PATCH] atmel_lcdfb: Use spare bits in 32bpp mode as alpha channel
From: Haavard Skinnemoen <hskinnemoen@atmel.com>

Set var->transp.offset and var->transp.length in 32bpp mode to
indicate that the 8 otherwise unused bits can be used for
transparency.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com>
---
drivers/video/atmel_lcdfb.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index a05491f..bb361ab 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -221,8 +221,11 @@ static int atmel_lcdfb_check_var(struct
fb_var_screeninfo *var,
var->blue.offset = 10;
var->red.length = var->green.length = var->blue.length = 5;
break;
- case 24:
case 32:
+ var->transp.offset = 24;
+ var->transp.length = 8;
+ /* fall through */
+ case 24:
var->red.offset = 0;
var->green.offset = 8;
var->blue.offset = 16;

-
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