f910fb8fcd
The IPU internally works on 32bit colors. It can arbitrarily map between pixel formats and internal representation and also between internal representation and the physical connection to the display. The driver used to change the mapping between internal representation and display connection depending on the user selected bpp which is wrong. Instead, the mapping is specified by the hardware, so an additional field in platform data is added to describe the connection between i.MX and the display. The default for this field is RGB666 which seems to be the only configuration which works without this patch, so I assumed that all in Kernel boards are connected this way. This patch has been tested on a RGB666 connected display and a RGB888 connected display in both 16bpp and 32bpp modes. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
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* Copyright (C) 2008
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* Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_MX3FB_H__
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#define __ASM_ARCH_MX3FB_H__
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#include <linux/device.h>
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#include <linux/fb.h>
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/* Proprietary FB_SYNC_ flags */
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#define FB_SYNC_OE_ACT_HIGH 0x80000000
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#define FB_SYNC_CLK_INVERT 0x40000000
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#define FB_SYNC_DATA_INVERT 0x20000000
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#define FB_SYNC_CLK_IDLE_EN 0x10000000
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#define FB_SYNC_SHARP_MODE 0x08000000
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#define FB_SYNC_SWAP_RGB 0x04000000
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#define FB_SYNC_CLK_SEL_EN 0x02000000
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/*
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* Specify the way your display is connected. The IPU can arbitrarily
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* map the internal colors to the external data lines. We only support
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* the following mappings at the moment.
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*/
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enum disp_data_mapping {
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/* blue -> d[0..5], green -> d[6..11], red -> d[12..17] */
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IPU_DISP_DATA_MAPPING_RGB666,
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/* blue -> d[0..4], green -> d[5..10], red -> d[11..15] */
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IPU_DISP_DATA_MAPPING_RGB565,
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/* blue -> d[0..7], green -> d[8..15], red -> d[16..23] */
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IPU_DISP_DATA_MAPPING_RGB888,
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};
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/**
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* struct mx3fb_platform_data - mx3fb platform data
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*
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* @dma_dev: pointer to the dma-device, used for dma-slave connection
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* @mode: pointer to a platform-provided per mxc_register_fb() videomode
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*/
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struct mx3fb_platform_data {
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struct device *dma_dev;
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const char *name;
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const struct fb_videomode *mode;
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int num_modes;
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enum disp_data_mapping disp_data_fmt;
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};
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#endif
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