7caa4342ca
Based on the patch by Takanari Hayama <taki@igel.co.jp> Adds support framework necessary to use Media RAM (MERAM) caching functionality with the LCDC. The MERAM is accessed through up to 4 Interconnect Buffers (ICBs). ICB numbers and MERAM address ranges to use are specified in by filling in the .meram_cfg member of the LCDC platform data Signed-off-by: Damian Hobson-Garcia <dhobsong@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
#ifndef __VIDEO_SH_MOBILE_MERAM_H__
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#define __VIDEO_SH_MOBILE_MERAM_H__
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/* For sh_mobile_meram_info.addr_mode */
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enum {
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SH_MOBILE_MERAM_MODE0 = 0,
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SH_MOBILE_MERAM_MODE1
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};
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enum {
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SH_MOBILE_MERAM_PF_NV = 0,
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SH_MOBILE_MERAM_PF_RGB
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};
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struct sh_mobile_meram_priv;
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struct sh_mobile_meram_ops;
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struct sh_mobile_meram_info {
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int addr_mode;
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struct sh_mobile_meram_ops *ops;
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struct sh_mobile_meram_priv *priv;
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struct platform_device *pdev;
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};
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/* icb config */
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struct sh_mobile_meram_icb {
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int marker_icb; /* ICB # for Marker ICB */
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int cache_icb; /* ICB # for Cache ICB */
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int meram_offset; /* MERAM Buffer Offset to use */
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int meram_size; /* MERAM Buffer Size to use */
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int cache_unit; /* bytes to cache per ICB */
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};
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struct sh_mobile_meram_cfg {
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struct sh_mobile_meram_icb icb[2];
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int pixelformat;
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int current_reg;
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};
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struct module;
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struct sh_mobile_meram_ops {
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struct module *module;
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/* register usage of meram */
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int (*meram_register)(struct sh_mobile_meram_info *meram_dev,
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struct sh_mobile_meram_cfg *cfg,
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int xres, int yres, int pixelformat,
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unsigned long base_addr_y,
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unsigned long base_addr_c,
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unsigned long *icb_addr_y,
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unsigned long *icb_addr_c, int *pitch);
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/* unregister usage of meram */
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int (*meram_unregister)(struct sh_mobile_meram_info *meram_dev,
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struct sh_mobile_meram_cfg *cfg);
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/* update meram settings */
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int (*meram_update)(struct sh_mobile_meram_info *meram_dev,
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struct sh_mobile_meram_cfg *cfg,
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unsigned long base_addr_y,
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unsigned long base_addr_c,
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unsigned long *icb_addr_y,
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unsigned long *icb_addr_c);
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};
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#endif /* __VIDEO_SH_MOBILE_MERAM_H__ */
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