include/video/mmp_disp.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * linux/include/video/mmp_disp.h
   4  * Header file for Marvell MMP Display Controller
   5  *
   6  * Copyright (C) 2012 Marvell Technology Group Ltd.
   7  * Authors: Zhou Zhu <zzhu3@marvell.com>
   8  */
   9
  10 #ifndef _MMP_DISP_H_
  11 #define _MMP_DISP_H_
  12 #include <linux/kthread.h>
  13
  14 enum {
  15         PIXFMT_UYVY = 0,
  16         PIXFMT_VYUY,
  17         PIXFMT_YUYV,
  18         PIXFMT_YUV422P,
  19         PIXFMT_YVU422P,
  20         PIXFMT_YUV420P,
  21         PIXFMT_YVU420P,
  22         PIXFMT_RGB565 = 0x100,
  23         PIXFMT_BGR565,
  24         PIXFMT_RGB1555,
  25         PIXFMT_BGR1555,
  26         PIXFMT_RGB888PACK,
  27         PIXFMT_BGR888PACK,
  28         PIXFMT_RGB888UNPACK,
  29         PIXFMT_BGR888UNPACK,
  30         PIXFMT_RGBA888,
  31         PIXFMT_BGRA888,
  32         PIXFMT_RGB666, /* for output usage */
  33         PIXFMT_PSEUDOCOLOR = 0x200,
  34 };
  35
  36 static inline int pixfmt_to_stride(int pix_fmt)
  37 {
  38         switch (pix_fmt) {
  39         case PIXFMT_RGB565:
  40         case PIXFMT_BGR565:
  41         case PIXFMT_RGB1555:
  42         case PIXFMT_BGR1555:
  43         case PIXFMT_UYVY:
  44         case PIXFMT_VYUY:
  45         case PIXFMT_YUYV:
  46                 return 2;
  47         case PIXFMT_RGB888UNPACK:
  48         case PIXFMT_BGR888UNPACK:
  49         case PIXFMT_RGBA888:
  50         case PIXFMT_BGRA888:
  51                 return 4;
  52         case PIXFMT_RGB888PACK:
  53         case PIXFMT_BGR888PACK:
  54                 return 3;
  55         case PIXFMT_YUV422P:
  56         case PIXFMT_YVU422P:
  57         case PIXFMT_YUV420P:
  58         case PIXFMT_YVU420P:
  59         case PIXFMT_PSEUDOCOLOR:
  60                 return 1;
  61         default:
  62                 return 0;
  63         }
  64 }
  65
  66 /* parameters used by path/overlay */
  67 /* overlay related para: win/addr */
  68 struct mmp_win {
  69         /* position/size of window */
  70         u16     xsrc;
  71         u16     ysrc;
  72         u16     xdst;
  73         u16     ydst;
  74         u16     xpos;
  75         u16     ypos;
  76         u16     left_crop;
  77         u16     right_crop;
  78         u16     up_crop;
  79         u16     bottom_crop;
  80         int     pix_fmt;
  81         /*
  82          * pitch[0]: graphics/video layer line length or y pitch
  83          * pitch[1]/pitch[2]: video u/v pitch if non-zero
  84          */
  85         u32     pitch[3];
  86 };
  87
  88 struct mmp_addr {
  89         /* phys address */
  90         u32     phys[6];
  91 };
  92
  93 /* path related para: mode */
  94 struct mmp_mode {
  95         const char *name;
  96         u32 refresh;
  97         u32 xres;
  98         u32 yres;
  99         u32 left_margin;
 100         u32 right_margin;
 101         u32 upper_margin;
 102         u32 lower_margin;
 103         u32 hsync_len;
 104         u32 vsync_len;
 105         u32 hsync_invert;
 106         u32 vsync_invert;
 107         u32 invert_pixclock;
 108         u32 pixclock_freq;
 109         int pix_fmt_out;
 110 };
 111
 112 /* main structures */
 113 struct mmp_path;
 114 struct mmp_overlay;
 115 struct mmp_panel;
 116
 117 /* status types */
 118 enum {
 119         MMP_OFF = 0,
 120         MMP_ON,
 121 };
 122
 123 static inline const char *stat_name(int stat)
 124 {
 125         switch (stat) {
 126         case MMP_OFF:
 127                 return "OFF";
 128         case MMP_ON:
 129                 return "ON";
 130         default:
 131                 return "UNKNOWNSTAT";
 132         }
 133 }
 134
 135 struct mmp_overlay_ops {
 136         /* should be provided by driver */
 137         void (*set_fetch)(struct mmp_overlay *overlay, int fetch_id);
 138         void (*set_onoff)(struct mmp_overlay *overlay, int status);
 139         void (*set_win)(struct mmp_overlay *overlay, struct mmp_win *win);
 140         int (*set_addr)(struct mmp_overlay *overlay, struct mmp_addr *addr);
 141 };
 142
 143 /* overlay describes a z-order indexed slot in each path. */
 144 struct mmp_overlay {
 145         int id;
 146         const char *name;
 147         struct mmp_path *path;
 148
 149         /* overlay info: private data */
 150         int dmafetch_id;
 151         struct mmp_addr addr;
 152         struct mmp_win win;
 153
 154         /* state */
 155         int open_count;
 156         int status;
 157         struct mutex access_ok;
 158
 159         struct mmp_overlay_ops *ops;
 160 };
 161
 162 /* panel type */
 163 enum {
 164         PANELTYPE_ACTIVE = 0,
 165         PANELTYPE_SMART,
 166         PANELTYPE_TV,
 167         PANELTYPE_DSI_CMD,
 168         PANELTYPE_DSI_VIDEO,
 169 };
 170
 171 struct mmp_panel {
 172         /* use node to register to list */
 173         struct list_head node;
 174         const char *name;
 175         /* path name used to connect to proper path configed */
 176         const char *plat_path_name;
 177         struct device *dev;
 178         int panel_type;
 179         void *plat_data;
 180         int (*get_modelist)(struct mmp_panel *panel,
 181                         struct mmp_mode **modelist);
 182         void (*set_mode)(struct mmp_panel *panel,
 183                         struct mmp_mode *mode);
 184         void (*set_onoff)(struct mmp_panel *panel,
 185                         int status);
 186 };
 187
 188 struct mmp_path_ops {
 189         int (*check_status)(struct mmp_path *path);
 190         struct mmp_overlay *(*get_overlay)(struct mmp_path *path,
 191                         int overlay_id);
 192         int (*get_modelist)(struct mmp_path *path,
 193                         struct mmp_mode **modelist);
 194
 195         /* follow ops should be provided by driver */
 196         void (*set_mode)(struct mmp_path *path, struct mmp_mode *mode);
 197         void (*set_onoff)(struct mmp_path *path, int status);
 198         /* todo: add query */
 199 };
 200
 201 /* path output types */
 202 enum {
 203         PATH_OUT_PARALLEL,
 204         PATH_OUT_DSI,
 205         PATH_OUT_HDMI,
 206 };
 207
 208 /* path is main part of mmp-disp */
 209 struct mmp_path {
 210         /* use node to register to list */
 211         struct list_head node;
 212
 213         /* init data */
 214         struct device *dev;
 215
 216         int id;
 217         const char *name;
 218         int output_type;
 219         struct mmp_panel *panel;
 220         void *plat_data;
 221
 222         /* dynamic use */
 223         struct mmp_mode mode;
 224
 225         /* state */
 226         int open_count;
 227         int status;
 228         struct mutex access_ok;
 229
 230         struct mmp_path_ops ops;
 231
 232         /* layers */
 233         int overlay_num;
 234         struct mmp_overlay overlays[] __counted_by(overlay_num);
 235 };
 236
 237 extern struct mmp_path *mmp_get_path(const char *name);
 238 static inline void mmp_path_set_mode(struct mmp_path *path,
 239                 struct mmp_mode *mode)
 240 {
 241         if (path)
 242                 path->ops.set_mode(path, mode);
 243 }
 244 static inline void mmp_path_set_onoff(struct mmp_path *path, int status)
 245 {
 246         if (path)
 247                 path->ops.set_onoff(path, status);
 248 }
 249 static inline int mmp_path_get_modelist(struct mmp_path *path,
 250                 struct mmp_mode **modelist)
 251 {
 252         if (path)
 253                 return path->ops.get_modelist(path, modelist);
 254         return 0;
 255 }
 256 static inline struct mmp_overlay *mmp_path_get_overlay(
 257                 struct mmp_path *path, int overlay_id)
 258 {
 259         if (path)
 260                 return path->ops.get_overlay(path, overlay_id);
 261         return NULL;
 262 }
 263 static inline void mmp_overlay_set_fetch(struct mmp_overlay *overlay,
 264                 int fetch_id)
 265 {
 266         if (overlay)
 267                 overlay->ops->set_fetch(overlay, fetch_id);
 268 }
 269 static inline void mmp_overlay_set_onoff(struct mmp_overlay *overlay,
 270                 int status)
 271 {
 272         if (overlay)
 273                 overlay->ops->set_onoff(overlay, status);
 274 }
 275 static inline void mmp_overlay_set_win(struct mmp_overlay *overlay,
 276                 struct mmp_win *win)
 277 {
 278         if (overlay)
 279                 overlay->ops->set_win(overlay, win);
 280 }
 281 static inline int mmp_overlay_set_addr(struct mmp_overlay *overlay,
 282                 struct mmp_addr *addr)
 283 {
 284         if (overlay)
 285                 return overlay->ops->set_addr(overlay, addr);
 286         return 0;
 287 }
 288
 289 /*
 290  * driver data is set from each detailed ctrl driver for path usage
 291  * it defined a common interface that plat driver need to implement
 292  */
 293 struct mmp_path_info {
 294         /* driver data, set when registed*/
 295         const char *name;
 296         struct device *dev;
 297         int id;
 298         int output_type;
 299         int overlay_num;
 300         void (*set_mode)(struct mmp_path *path, struct mmp_mode *mode);
 301         void (*set_onoff)(struct mmp_path *path, int status);
 302         struct mmp_overlay_ops *overlay_ops;
 303         void *plat_data;
 304 };
 305
 306 extern struct mmp_path *mmp_register_path(
 307                 struct mmp_path_info *info);
 308 extern void mmp_unregister_path(struct mmp_path *path);
 309 extern void mmp_register_panel(struct mmp_panel *panel);
 310 extern void mmp_unregister_panel(struct mmp_panel *panel);
 311
 312 /* defintions for platform data */
 313 /* interface for buffer driver */
 314 struct mmp_buffer_driver_mach_info {
 315         const char      *name;
 316         const char      *path_name;
 317         int     overlay_id;
 318         int     dmafetch_id;
 319         int     default_pixfmt;
 320 };
 321
 322 /* interface for controllers driver */
 323 struct mmp_mach_path_config {
 324         const char *name;
 325         int overlay_num;
 326         int output_type;
 327         u32 path_config;
 328         u32 link_config;
 329         u32 dsi_rbswap;
 330 };
 331
 332 struct mmp_mach_plat_info {
 333         const char *name;
 334         const char *clk_name;
 335         int path_num;
 336         struct mmp_mach_path_config *paths;
 337 };
 338
 339 /* interface for panel drivers */
 340 struct mmp_mach_panel_info {
 341         const char *name;
 342         void (*plat_set_onoff)(int status);
 343         const char *plat_path_name;
 344 };
 345 #endif  /* _MMP_DISP_H_ */