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authorDamian <dhobsong@igel.co.jp>2011-05-18 15:10:07 +0400
committerPaul Mundt <lethal@linux-sh.org>2011-05-23 11:06:24 +0400
commit7caa4342ca5b37d2d178b464c16badd4228b3b7b (patch)
tree0111e05278facfc0eb92c46b80c577d1e1e694e4 /include/video/sh_mobile_meram.h
parent71a8638480eb8fb6cfabe2ee9ca3fbc6e3453a14 (diff)
downloadlinux-7caa4342ca5b37d2d178b464c16badd4228b3b7b.tar.xz
sh_mobile_meram: MERAM framework for LCDC
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>
Diffstat (limited to 'include/video/sh_mobile_meram.h')
-rw-r--r--include/video/sh_mobile_meram.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/include/video/sh_mobile_meram.h b/include/video/sh_mobile_meram.h
new file mode 100644
index 000000000000..15fbb3da266f
--- /dev/null
+++ b/include/video/sh_mobile_meram.h
@@ -0,0 +1,67 @@
+#ifndef __VIDEO_SH_MOBILE_MERAM_H__
+#define __VIDEO_SH_MOBILE_MERAM_H__
+
+/* For sh_mobile_meram_info.addr_mode */
+enum {
+ SH_MOBILE_MERAM_MODE0 = 0,
+ SH_MOBILE_MERAM_MODE1
+};
+
+enum {
+ SH_MOBILE_MERAM_PF_NV = 0,
+ SH_MOBILE_MERAM_PF_RGB
+};
+
+
+struct sh_mobile_meram_priv;
+struct sh_mobile_meram_ops;
+
+struct sh_mobile_meram_info {
+ int addr_mode;
+ struct sh_mobile_meram_ops *ops;
+ struct sh_mobile_meram_priv *priv;
+ struct platform_device *pdev;
+};
+
+/* icb config */
+struct sh_mobile_meram_icb {
+ int marker_icb; /* ICB # for Marker ICB */
+ int cache_icb; /* ICB # for Cache ICB */
+ int meram_offset; /* MERAM Buffer Offset to use */
+ int meram_size; /* MERAM Buffer Size to use */
+
+ int cache_unit; /* bytes to cache per ICB */
+};
+
+struct sh_mobile_meram_cfg {
+ struct sh_mobile_meram_icb icb[2];
+ int pixelformat;
+ int current_reg;
+};
+
+struct module;
+struct sh_mobile_meram_ops {
+ struct module *module;
+ /* register usage of meram */
+ int (*meram_register)(struct sh_mobile_meram_info *meram_dev,
+ struct sh_mobile_meram_cfg *cfg,
+ int xres, int yres, int pixelformat,
+ unsigned long base_addr_y,
+ unsigned long base_addr_c,
+ unsigned long *icb_addr_y,
+ unsigned long *icb_addr_c, int *pitch);
+
+ /* unregister usage of meram */
+ int (*meram_unregister)(struct sh_mobile_meram_info *meram_dev,
+ struct sh_mobile_meram_cfg *cfg);
+
+ /* update meram settings */
+ int (*meram_update)(struct sh_mobile_meram_info *meram_dev,
+ struct sh_mobile_meram_cfg *cfg,
+ unsigned long base_addr_y,
+ unsigned long base_addr_c,
+ unsigned long *icb_addr_y,
+ unsigned long *icb_addr_c);
+};
+
+#endif /* __VIDEO_SH_MOBILE_MERAM_H__ */