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| author | Jonathan Corbet <corbet@lwn.net> | 2010-04-23 10:31:13 -0600 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2010-05-07 17:17:38 -0600 |
| commit | c2b12cd496bbe5eff6a48bc669fe6b0c56f2b3d9 (patch) | |
| tree | 06d867d54adad9b8b540d2885a85bb0e3ed6e592 /drivers/video/via/via-core.h | |
| parent | 3d28eb42c52a799c806082e6d856f634ed1db902 (diff) | |
| download | lwn-c2b12cd496bbe5eff6a48bc669fe6b0c56f2b3d9.tar.gz lwn-c2b12cd496bbe5eff6a48bc669fe6b0c56f2b3d9.zip | |
viafb: Reserve framebuffer memory for the upcoming camera driver
The camera engine captures to framebuffer memory, so we need to set some
aside for that purpose. There is no proper memory allocator for fbmem;
instead, accel.c just trims some space off the top. Alas, without creating
that proper memory allocator, the only way to make this work is to hack it
into the same bit of code in accel.c. The allocation must happen *after*
the others (some code, including user-space XV stuff, makes assumptions on
where the cursor space is), and before the rest of the framebuffer is set
up.
Cc: ScottFang@viatech.com.cn
Cc: JosephChan@via.com.tw
Cc: Harald Welte <laforge@gnumonks.org>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'drivers/video/via/via-core.h')
| -rw-r--r-- | drivers/video/via/via-core.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/video/via/via-core.h b/drivers/video/via/via-core.h index 3d03141d6074..087c562abaec 100644 --- a/drivers/video/via/via-core.h +++ b/drivers/video/via/via-core.h @@ -78,6 +78,10 @@ struct viafb_dev { unsigned long fbmem_start; long fbmem_len; void __iomem *fbmem; +#if defined(CONFIG_FB_VIA_CAMERA) || defined(CONFIG_FB_VIA_CAMERA_MODULE) + long camera_fbmem_offset; + long camera_fbmem_size; +#endif /* * The MMIO region for device registers. */ @@ -160,4 +164,10 @@ int viafb_dma_copy_out_sg(unsigned int offset, struct scatterlist *sg, int nsg); #define VDMA_DPRH0 0xe38 #define VDMA_PMR0 (0xe00 + 0x134) /* Pitch mode */ +/* + * Useful stuff that probably belongs somewhere global. + */ +#define VGA_WIDTH 640 +#define VGA_HEIGHT 480 + #endif /* __VIA_CORE_H__ */ |