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From 4e0660161587681630da35f525cacf17bed58795 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Wed, 12 Feb 2014 12:01:56 +0000
Subject: [PATCH 167/174] bcm2708fb: Allow swapping of red/blue in 24/32 modes
---
drivers/video/bcm2708_fb.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
--- a/drivers/video/bcm2708_fb.c
+++ b/drivers/video/bcm2708_fb.c
@@ -53,6 +53,7 @@ static u32 dma_busy_wait_threshold = 1<<
module_param(dma_busy_wait_threshold, int, 0644);
MODULE_PARM_DESC(dma_busy_wait_threshold, "Busy-wait for DMA completion below this area");
+static int fbswap = 0; /* module parameter */
/* this data structure describes each frame buffer device we find */
@@ -185,7 +186,12 @@ static int bcm2708_fb_set_bitfields(stru
* encoded in the pixel data. Calculate their position from
* the bitfield length defined above.
*/
- if (ret == 0 && var->bits_per_pixel >= 24) {
+ if (ret == 0 && var->bits_per_pixel >= 24 && fbswap) {
+ var->blue.offset = 0;
+ var->green.offset = var->blue.offset + var->blue.length;
+ var->red.offset = var->green.offset + var->green.length;
+ var->transp.offset = var->red.offset + var->red.length;
+ } else if (ret == 0 && var->bits_per_pixel >= 24) {
var->red.offset = 0;
var->green.offset = var->red.offset + var->red.length;
var->blue.offset = var->green.offset + var->green.length;
@@ -618,8 +624,8 @@ static int bcm2708_fb_register(struct bc
fb_set_var(&fb->fb, &fb->fb.var);
- print_debug("BCM2708FB: registering framebuffer (%dx%d@%d)\n", fbwidth,
- fbheight, fbdepth);
+ print_debug("BCM2708FB: registering framebuffer (%dx%d@%d) (%d)\n", fbwidth
+ fbheight, fbdepth, fbswap);
ret = register_framebuffer(&fb->fb);
print_debug("BCM2708FB: register framebuffer (%d)\n", ret);
@@ -746,6 +752,7 @@ module_exit(bcm2708_fb_exit);
module_param(fbwidth, int, 0644);
module_param(fbheight, int, 0644);
module_param(fbdepth, int, 0644);
+module_param(fbswap, int, 0644);
MODULE_DESCRIPTION("BCM2708 framebuffer driver");
MODULE_LICENSE("GPL");
@@ -753,3 +760,4 @@ MODULE_LICENSE("GPL");
MODULE_PARM_DESC(fbwidth, "Width of ARM Framebuffer");
MODULE_PARM_DESC(fbheight, "Height of ARM Framebuffer");
MODULE_PARM_DESC(fbdepth, "Bit depth of ARM Framebuffer");
+MODULE_PARM_DESC(fbswap, "Swap order of red and blue in 24 and 32 bit modes");
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