ea465250d4
This patch adds a way to create and use the video plane (YUV overlay) and
scaling video scaling features of the chip.
The overlay is configured, resized and modified using a device specific
ioctl.
Also included in this patch:
- If no platform data was passed, print an error and exit instead of crashing.
- Added a write_reg(_dly) macro. This improves readability when
manipulating chip registers. (no more udelay() after each write).
- Comments about some issues.
Signed-off-by: Raphael Assenat <raph@8d.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Acked-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
59 lines
1 KiB
C
59 lines
1 KiB
C
#ifndef __MBX_FB_H
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#define __MBX_FB_H
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#include <asm/ioctl.h>
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#include <asm/types.h>
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struct mbxfb_val {
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unsigned int defval;
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unsigned int min;
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unsigned int max;
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};
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struct fb_info;
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struct mbxfb_platform_data {
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/* Screen info */
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struct mbxfb_val xres;
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struct mbxfb_val yres;
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struct mbxfb_val bpp;
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/* Memory info */
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unsigned long memsize; /* if 0 use ODFB? */
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unsigned long timings1;
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unsigned long timings2;
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unsigned long timings3;
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int (*probe)(struct fb_info *fb);
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int (*remove)(struct fb_info *fb);
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};
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/* planar */
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#define MBXFB_FMT_YUV12 0
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/* packed */
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#define MBXFB_FMT_UY0VY1 1
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#define MBXFB_FMT_VY0UY1 2
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#define MBXFB_FMT_Y0UY1V 3
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#define MBXFB_FMT_Y0VY1U 4
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struct mbxfb_overlaySetup {
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__u32 enable;
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__u32 x, y;
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__u32 width, height;
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__u32 alpha;
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__u32 fmt;
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__u32 mem_offset;
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__u32 scaled_width;
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__u32 scaled_height;
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/* Filled by the driver */
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__u32 U_offset;
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__u32 V_offset;
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__u16 Y_stride;
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__u16 UV_stride;
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};
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#define MBXFB_IOCX_OVERLAY _IOWR(0xF4, 0x00,struct mbxfb_overlaySetup)
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#endif /* __MBX_FB_H */
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