include/video/sh_mobile_meram.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __VIDEO_SH_MOBILE_MERAM_H__
   3 #define __VIDEO_SH_MOBILE_MERAM_H__
   4
   5 /* For sh_mobile_meram_info.addr_mode */
   6 enum {
   7         SH_MOBILE_MERAM_MODE0 = 0,
   8         SH_MOBILE_MERAM_MODE1
   9 };
  10
  11 enum {
  12         SH_MOBILE_MERAM_PF_NV = 0,
  13         SH_MOBILE_MERAM_PF_RGB,
  14         SH_MOBILE_MERAM_PF_NV24
  15 };
  16
  17
  18 struct sh_mobile_meram_priv;
  19
  20 /*
  21  * struct sh_mobile_meram_info - MERAM platform data
  22  * @reserved_icbs: Bitmask of reserved ICBs (for instance used through UIO)
  23  */
  24 struct sh_mobile_meram_info {
  25         int                             addr_mode;
  26         u32                             reserved_icbs;
  27         struct sh_mobile_meram_priv     *priv;
  28         struct platform_device          *pdev;
  29 };
  30
  31 /* icb config */
  32 struct sh_mobile_meram_icb_cfg {
  33         unsigned int meram_size;        /* MERAM Buffer Size to use */
  34 };
  35
  36 struct sh_mobile_meram_cfg {
  37         struct sh_mobile_meram_icb_cfg icb[2];
  38 };
  39
  40 #if defined(CONFIG_FB_SH_MOBILE_MERAM) || \
  41     defined(CONFIG_FB_SH_MOBILE_MERAM_MODULE)
  42 unsigned long sh_mobile_meram_alloc(struct sh_mobile_meram_info *meram_dev,
  43                                     size_t size);
  44 void sh_mobile_meram_free(struct sh_mobile_meram_info *meram_dev,
  45                           unsigned long mem, size_t size);
  46 void *sh_mobile_meram_cache_alloc(struct sh_mobile_meram_info *dev,
  47                                   const struct sh_mobile_meram_cfg *cfg,
  48                                   unsigned int xres, unsigned int yres,
  49                                   unsigned int pixelformat,
  50                                   unsigned int *pitch);
  51 void sh_mobile_meram_cache_free(struct sh_mobile_meram_info *dev, void *data);
  52 void sh_mobile_meram_cache_update(struct sh_mobile_meram_info *dev, void *data,
  53                                   unsigned long base_addr_y,
  54                                   unsigned long base_addr_c,
  55                                   unsigned long *icb_addr_y,
  56                                   unsigned long *icb_addr_c);
  57 #else
  58 static inline unsigned long
  59 sh_mobile_meram_alloc(struct sh_mobile_meram_info *meram_dev, size_t size)
  60 {
  61         return 0;
  62 }
  63
  64 static inline void
  65 sh_mobile_meram_free(struct sh_mobile_meram_info *meram_dev,
  66                      unsigned long mem, size_t size)
  67 {
  68 }
  69
  70 static inline void *
  71 sh_mobile_meram_cache_alloc(struct sh_mobile_meram_info *dev,
  72                             const struct sh_mobile_meram_cfg *cfg,
  73                             unsigned int xres, unsigned int yres,
  74                             unsigned int pixelformat,
  75                             unsigned int *pitch)
  76 {
  77         return ERR_PTR(-ENODEV);
  78 }
  79
  80 static inline void
  81 sh_mobile_meram_cache_free(struct sh_mobile_meram_info *dev, void *data)
  82 {
  83 }
  84
  85 static inline void
  86 sh_mobile_meram_cache_update(struct sh_mobile_meram_info *dev, void *data,
  87                              unsigned long base_addr_y,
  88                              unsigned long base_addr_c,
  89                              unsigned long *icb_addr_y,
  90                              unsigned long *icb_addr_c)
  91 {
  92 }
  93 #endif
  94
  95 #endif /* __VIDEO_SH_MOBILE_MERAM_H__  */