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