1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
4 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
5 */
6
7 #ifndef __OMAP_DRM_DSS_H
8 #define __OMAP_DRM_DSS_H
9
10 #include <linux/list.h>
11 #include <linux/device.h>
12 #include <linux/interrupt.h>
13 #include <video/videomode.h>
14 #include <linux/platform_data/omapdss.h>
15 #include <uapi/drm/drm_mode.h>
16 #include <drm/drm_crtc.h>
17
18 #define DISPC_IRQ_FRAMEDONE (1 << 0)
19 #define DISPC_IRQ_VSYNC (1 << 1)
20 #define DISPC_IRQ_EVSYNC_EVEN (1 << 2)
21 #define DISPC_IRQ_EVSYNC_ODD (1 << 3)
22 #define DISPC_IRQ_ACBIAS_COUNT_STAT (1 << 4)
23 #define DISPC_IRQ_PROG_LINE_NUM (1 << 5)
24 #define DISPC_IRQ_GFX_FIFO_UNDERFLOW (1 << 6)
25 #define DISPC_IRQ_GFX_END_WIN (1 << 7)
26 #define DISPC_IRQ_PAL_GAMMA_MASK (1 << 8)
27 #define DISPC_IRQ_OCP_ERR (1 << 9)
28 #define DISPC_IRQ_VID1_FIFO_UNDERFLOW (1 << 10)
29 #define DISPC_IRQ_VID1_END_WIN (1 << 11)
30 #define DISPC_IRQ_VID2_FIFO_UNDERFLOW (1 << 12)
31 #define DISPC_IRQ_VID2_END_WIN (1 << 13)
32 #define DISPC_IRQ_SYNC_LOST (1 << 14)
33 #define DISPC_IRQ_SYNC_LOST_DIGIT (1 << 15)
34 #define DISPC_IRQ_WAKEUP (1 << 16)
35 #define DISPC_IRQ_SYNC_LOST2 (1 << 17)
36 #define DISPC_IRQ_VSYNC2 (1 << 18)
37 #define DISPC_IRQ_VID3_END_WIN (1 << 19)
38 #define DISPC_IRQ_VID3_FIFO_UNDERFLOW (1 << 20)
39 #define DISPC_IRQ_ACBIAS_COUNT_STAT2 (1 << 21)
40 #define DISPC_IRQ_FRAMEDONE2 (1 << 22)
41 #define DISPC_IRQ_FRAMEDONEWB (1 << 23)
42 #define DISPC_IRQ_FRAMEDONETV (1 << 24)
43 #define DISPC_IRQ_WBBUFFEROVERFLOW (1 << 25)
44 #define DISPC_IRQ_WBUNCOMPLETEERROR (1 << 26)
45 #define DISPC_IRQ_SYNC_LOST3 (1 << 27)
46 #define DISPC_IRQ_VSYNC3 (1 << 28)
47 #define DISPC_IRQ_ACBIAS_COUNT_STAT3 (1 << 29)
48 #define DISPC_IRQ_FRAMEDONE3 (1 << 30)
49
50 struct dss_device;
51 struct omap_drm_private;
52 struct omap_dss_device;
53 struct dispc_device;
54 struct dss_device;
55 struct dss_lcd_mgr_config;
56 struct snd_aes_iec958;
57 struct snd_cea_861_aud_if;
58 struct hdmi_avi_infoframe;
59 struct drm_connector;
60
61 enum omap_display_type {
62 OMAP_DISPLAY_TYPE_NONE = 0,
63 OMAP_DISPLAY_TYPE_DPI = 1 << 0,
64 OMAP_DISPLAY_TYPE_DBI = 1 << 1,
65 OMAP_DISPLAY_TYPE_SDI = 1 << 2,
66 OMAP_DISPLAY_TYPE_DSI = 1 << 3,
67 OMAP_DISPLAY_TYPE_VENC = 1 << 4,
68 OMAP_DISPLAY_TYPE_HDMI = 1 << 5,
69 OMAP_DISPLAY_TYPE_DVI = 1 << 6,
70 };
71
72 enum omap_plane_id {
73 OMAP_DSS_GFX = 0,
74 OMAP_DSS_VIDEO1 = 1,
75 OMAP_DSS_VIDEO2 = 2,
76 OMAP_DSS_VIDEO3 = 3,
77 OMAP_DSS_WB = 4,
78 };
79
80 enum omap_channel {
81 OMAP_DSS_CHANNEL_LCD = 0,
82 OMAP_DSS_CHANNEL_DIGIT = 1,
83 OMAP_DSS_CHANNEL_LCD2 = 2,
84 OMAP_DSS_CHANNEL_LCD3 = 3,
85 OMAP_DSS_CHANNEL_WB = 4,
86 };
87
88 enum omap_color_mode {
89 _UNUSED_,
90 };
91
92 enum omap_dss_load_mode {
93 OMAP_DSS_LOAD_CLUT_AND_FRAME = 0,
94 OMAP_DSS_LOAD_CLUT_ONLY = 1,
95 OMAP_DSS_LOAD_FRAME_ONLY = 2,
96 OMAP_DSS_LOAD_CLUT_ONCE_FRAME = 3,
97 };
98
99 enum omap_dss_trans_key_type {
100 OMAP_DSS_COLOR_KEY_GFX_DST = 0,
101 OMAP_DSS_COLOR_KEY_VID_SRC = 1,
102 };
103
104 enum omap_dss_signal_level {
105 OMAPDSS_SIG_ACTIVE_LOW,
106 OMAPDSS_SIG_ACTIVE_HIGH,
107 };
108
109 enum omap_dss_signal_edge {
110 OMAPDSS_DRIVE_SIG_FALLING_EDGE,
111 OMAPDSS_DRIVE_SIG_RISING_EDGE,
112 };
113
114 enum omap_dss_venc_type {
115 OMAP_DSS_VENC_TYPE_COMPOSITE,
116 OMAP_DSS_VENC_TYPE_SVIDEO,
117 };
118
119 enum omap_dss_dsi_pixel_format {
120 OMAP_DSS_DSI_FMT_RGB888,
121 OMAP_DSS_DSI_FMT_RGB666,
122 OMAP_DSS_DSI_FMT_RGB666_PACKED,
123 OMAP_DSS_DSI_FMT_RGB565,
124 };
125
126 enum omap_dss_dsi_mode {
127 OMAP_DSS_DSI_CMD_MODE = 0,
128 OMAP_DSS_DSI_VIDEO_MODE,
129 };
130
131 enum omap_display_caps {
132 OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE = 1 << 0,
133 OMAP_DSS_DISPLAY_CAP_TEAR_ELIM = 1 << 1,
134 };
135
136 enum omap_dss_display_state {
137 OMAP_DSS_DISPLAY_DISABLED = 0,
138 OMAP_DSS_DISPLAY_ACTIVE,
139 };
140
141 enum omap_dss_rotation_type {
142 OMAP_DSS_ROT_NONE = 0,
143 OMAP_DSS_ROT_TILER = 1 << 0,
144 };
145
146 enum omap_overlay_caps {
147 OMAP_DSS_OVL_CAP_SCALE = 1 << 0,
148 OMAP_DSS_OVL_CAP_GLOBAL_ALPHA = 1 << 1,
149 OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA = 1 << 2,
150 OMAP_DSS_OVL_CAP_ZORDER = 1 << 3,
151 OMAP_DSS_OVL_CAP_POS = 1 << 4,
152 OMAP_DSS_OVL_CAP_REPLICATION = 1 << 5,
153 };
154
155 enum omap_dss_output_id {
156 OMAP_DSS_OUTPUT_DPI = 1 << 0,
157 OMAP_DSS_OUTPUT_DBI = 1 << 1,
158 OMAP_DSS_OUTPUT_SDI = 1 << 2,
159 OMAP_DSS_OUTPUT_DSI1 = 1 << 3,
160 OMAP_DSS_OUTPUT_DSI2 = 1 << 4,
161 OMAP_DSS_OUTPUT_VENC = 1 << 5,
162 OMAP_DSS_OUTPUT_HDMI = 1 << 6,
163 };
164
165 /* DSI */
166
167 enum omap_dss_dsi_trans_mode {
168 /* Sync Pulses: both sync start and end packets sent */
169 OMAP_DSS_DSI_PULSE_MODE,
170 /* Sync Events: only sync start packets sent */
171 OMAP_DSS_DSI_EVENT_MODE,
172 /* Burst: only sync start packets sent, pixels are time compressed */
173 OMAP_DSS_DSI_BURST_MODE,
174 };
175
176 struct omap_dss_dsi_videomode_timings {
177 unsigned long hsclk;
178
179 unsigned int ndl;
180 unsigned int bitspp;
181
182 /* pixels */
183 u16 hact;
184 /* lines */
185 u16 vact;
186
187 /* DSI video mode blanking data */
188 /* Unit: byte clock cycles */
189 u16 hss;
190 u16 hsa;
191 u16 hse;
192 u16 hfp;
193 u16 hbp;
194 /* Unit: line clocks */
195 u16 vsa;
196 u16 vfp;
197 u16 vbp;
198
199 /* DSI blanking modes */
200 int blanking_mode;
201 int hsa_blanking_mode;
202 int hbp_blanking_mode;
203 int hfp_blanking_mode;
204
205 enum omap_dss_dsi_trans_mode trans_mode;
206
207 bool ddr_clk_always_on;
208 int window_sync;
209 };
210
211 struct omap_dss_dsi_config {
212 enum omap_dss_dsi_mode mode;
213 enum omap_dss_dsi_pixel_format pixel_format;
214 const struct videomode *vm;
215
216 unsigned long hs_clk_min, hs_clk_max;
217 unsigned long lp_clk_min, lp_clk_max;
218
219 bool ddr_clk_always_on;
220 enum omap_dss_dsi_trans_mode trans_mode;
221 };
222
223 struct omap_dss_cpr_coefs {
224 s16 rr, rg, rb;
225 s16 gr, gg, gb;
226 s16 br, bg, bb;
227 };
228
229 struct omap_overlay_info {
230 dma_addr_t paddr;
231 dma_addr_t p_uv_addr; /* for NV12 format */
232 u16 screen_width;
233 u16 width;
234 u16 height;
235 u32 fourcc;
236 u8 rotation;
237 enum omap_dss_rotation_type rotation_type;
238
239 u16 pos_x;
240 u16 pos_y;
241 u16 out_width; /* if 0, out_width == width */
242 u16 out_height; /* if 0, out_height == height */
243 u8 global_alpha;
244 u8 pre_mult_alpha;
245 u8 zorder;
246 };
247
248 struct omap_overlay_manager_info {
249 u32 default_color;
250
251 enum omap_dss_trans_key_type trans_key_type;
252 u32 trans_key;
253 bool trans_enabled;
254
255 bool partial_alpha_enabled;
256
257 bool cpr_enable;
258 struct omap_dss_cpr_coefs cpr_coefs;
259 };
260
261 /* 22 pins means 1 clk lane and 10 data lanes */
262 #define OMAP_DSS_MAX_DSI_PINS 22
263
264 struct omap_dsi_pin_config {
265 int num_pins;
266 /*
267 * pin numbers in the following order:
268 * clk+, clk-
269 * data1+, data1-
270 * data2+, data2-
271 * ...
272 */
273 int pins[OMAP_DSS_MAX_DSI_PINS];
274 };
275
276 struct omap_dss_writeback_info {
277 u32 paddr;
278 u32 p_uv_addr;
279 u16 buf_width;
280 u16 width;
281 u16 height;
282 u32 fourcc;
283 u8 rotation;
284 enum omap_dss_rotation_type rotation_type;
285 u8 pre_mult_alpha;
286 };
287
288 struct omapdss_dsi_ops {
289 void (*disable)(struct omap_dss_device *dssdev, bool disconnect_lanes,
290 bool enter_ulps);
291
292 /* bus configuration */
293 int (*set_config)(struct omap_dss_device *dssdev,
294 const struct omap_dss_dsi_config *cfg);
295 int (*configure_pins)(struct omap_dss_device *dssdev,
296 const struct omap_dsi_pin_config *pin_cfg);
297
298 void (*enable_hs)(struct omap_dss_device *dssdev, int channel,
299 bool enable);
300 int (*enable_te)(struct omap_dss_device *dssdev, bool enable);
301
302 int (*update)(struct omap_dss_device *dssdev, int channel,
303 void (*callback)(int, void *), void *data);
304
305 void (*bus_lock)(struct omap_dss_device *dssdev);
306 void (*bus_unlock)(struct omap_dss_device *dssdev);
307
308 int (*enable_video_output)(struct omap_dss_device *dssdev, int channel);
309 void (*disable_video_output)(struct omap_dss_device *dssdev,
310 int channel);
311
312 int (*request_vc)(struct omap_dss_device *dssdev, int *channel);
313 int (*set_vc_id)(struct omap_dss_device *dssdev, int channel,
314 int vc_id);
315 void (*release_vc)(struct omap_dss_device *dssdev, int channel);
316
317 /* data transfer */
318 int (*dcs_write)(struct omap_dss_device *dssdev, int channel,
319 u8 *data, int len);
320 int (*dcs_write_nosync)(struct omap_dss_device *dssdev, int channel,
321 u8 *data, int len);
322 int (*dcs_read)(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
323 u8 *data, int len);
324
325 int (*gen_write)(struct omap_dss_device *dssdev, int channel,
326 u8 *data, int len);
327 int (*gen_write_nosync)(struct omap_dss_device *dssdev, int channel,
328 u8 *data, int len);
329 int (*gen_read)(struct omap_dss_device *dssdev, int channel,
330 u8 *reqdata, int reqlen,
331 u8 *data, int len);
332
333 int (*bta_sync)(struct omap_dss_device *dssdev, int channel);
334
335 int (*set_max_rx_packet_size)(struct omap_dss_device *dssdev,
336 int channel, u16 plen);
337 };
338
339 struct omap_dss_device_ops {
340 int (*connect)(struct omap_dss_device *dssdev,
341 struct omap_dss_device *dst);
342 void (*disconnect)(struct omap_dss_device *dssdev,
343 struct omap_dss_device *dst);
344
345 void (*enable)(struct omap_dss_device *dssdev);
346 void (*disable)(struct omap_dss_device *dssdev);
347
348 int (*check_timings)(struct omap_dss_device *dssdev,
349 struct drm_display_mode *mode);
350
351 int (*get_modes)(struct omap_dss_device *dssdev,
352 struct drm_connector *connector);
353
354 const struct omapdss_dsi_ops dsi;
355 };
356
357 /**
358 * enum omap_dss_device_ops_flag - Indicates which device ops are supported
359 * @OMAP_DSS_DEVICE_OP_MODES: The device supports reading modes
360 */
361 enum omap_dss_device_ops_flag {
362 OMAP_DSS_DEVICE_OP_MODES = BIT(3),
363 };
364
365 struct omap_dss_device {
366 struct device *dev;
367
368 struct module *owner;
369
370 struct dss_device *dss;
371 struct omap_dss_device *next;
372 struct drm_bridge *bridge;
373 struct drm_bridge *next_bridge;
374 struct drm_panel *panel;
375
376 struct list_head list;
377
378 /*
379 * DSS type that this device generates (for DSS internal devices) or
380 * requires (for external encoders, connectors and panels). Must be a
381 * non-zero (different than OMAP_DISPLAY_TYPE_NONE) value.
382 */
383 enum omap_display_type type;
384
385 /*
386 * True if the device is a display (panel or connector) at the end of
387 * the pipeline, false otherwise.
388 */
389 bool display;
390
391 const char *name;
392
393 const struct omap_dss_driver *driver;
394 const struct omap_dss_device_ops *ops;
395 unsigned long ops_flags;
396 u32 bus_flags;
397
398 enum omap_display_caps caps;
399
400 enum omap_dss_display_state state;
401
402 /* OMAP DSS output specific fields */
403
404 /* DISPC channel for this output */
405 enum omap_channel dispc_channel;
406
407 /* output instance */
408 enum omap_dss_output_id id;
409
410 /* port number in DT */
411 unsigned int of_port;
412 };
413
414 struct omap_dss_driver {
415 int (*update)(struct omap_dss_device *dssdev,
416 u16 x, u16 y, u16 w, u16 h);
417 int (*sync)(struct omap_dss_device *dssdev);
418
419 int (*enable_te)(struct omap_dss_device *dssdev, bool enable);
420 int (*get_te)(struct omap_dss_device *dssdev);
421
422 int (*memory_read)(struct omap_dss_device *dssdev,
423 void *buf, size_t size,
424 u16 x, u16 y, u16 w, u16 h);
425 };
426
427 struct dss_device *omapdss_get_dss(void);
428 void omapdss_set_dss(struct dss_device *dss);
omapdss_is_initialized(void)429 static inline bool omapdss_is_initialized(void)
430 {
431 return !!omapdss_get_dss();
432 }
433
434 void omapdss_display_init(struct omap_dss_device *dssdev);
435 int omapdss_display_get_modes(struct drm_connector *connector,
436 const struct videomode *vm);
437
438 void omapdss_device_register(struct omap_dss_device *dssdev);
439 void omapdss_device_unregister(struct omap_dss_device *dssdev);
440 struct omap_dss_device *omapdss_device_get(struct omap_dss_device *dssdev);
441 void omapdss_device_put(struct omap_dss_device *dssdev);
442 struct omap_dss_device *omapdss_find_device_by_node(struct device_node *node);
443 int omapdss_device_connect(struct dss_device *dss,
444 struct omap_dss_device *src,
445 struct omap_dss_device *dst);
446 void omapdss_device_disconnect(struct omap_dss_device *src,
447 struct omap_dss_device *dst);
448 void omapdss_device_enable(struct omap_dss_device *dssdev);
449 void omapdss_device_disable(struct omap_dss_device *dssdev);
450
451 int omap_dss_get_num_overlay_managers(void);
452
453 int omap_dss_get_num_overlays(void);
454
455 #define for_each_dss_output(d) \
456 while ((d = omapdss_device_next_output(d)) != NULL)
457 struct omap_dss_device *omapdss_device_next_output(struct omap_dss_device *from);
458 int omapdss_device_init_output(struct omap_dss_device *out,
459 struct drm_bridge *local_bridge);
460 void omapdss_device_cleanup_output(struct omap_dss_device *out);
461
462 typedef void (*omap_dispc_isr_t) (void *arg, u32 mask);
463 int omap_dispc_register_isr(omap_dispc_isr_t isr, void *arg, u32 mask);
464 int omap_dispc_unregister_isr(omap_dispc_isr_t isr, void *arg, u32 mask);
465
466 int omapdss_compat_init(void);
467 void omapdss_compat_uninit(void);
468
omapdss_device_is_enabled(struct omap_dss_device * dssdev)469 static inline bool omapdss_device_is_enabled(struct omap_dss_device *dssdev)
470 {
471 return dssdev->state == OMAP_DSS_DISPLAY_ACTIVE;
472 }
473
474 enum dss_writeback_channel {
475 DSS_WB_LCD1_MGR = 0,
476 DSS_WB_LCD2_MGR = 1,
477 DSS_WB_TV_MGR = 2,
478 DSS_WB_OVL0 = 3,
479 DSS_WB_OVL1 = 4,
480 DSS_WB_OVL2 = 5,
481 DSS_WB_OVL3 = 6,
482 DSS_WB_LCD3_MGR = 7,
483 };
484
485 struct dss_mgr_ops {
486 void (*start_update)(struct omap_drm_private *priv,
487 enum omap_channel channel);
488 int (*enable)(struct omap_drm_private *priv,
489 enum omap_channel channel);
490 void (*disable)(struct omap_drm_private *priv,
491 enum omap_channel channel);
492 void (*set_timings)(struct omap_drm_private *priv,
493 enum omap_channel channel,
494 const struct videomode *vm);
495 void (*set_lcd_config)(struct omap_drm_private *priv,
496 enum omap_channel channel,
497 const struct dss_lcd_mgr_config *config);
498 int (*register_framedone_handler)(struct omap_drm_private *priv,
499 enum omap_channel channel,
500 void (*handler)(void *), void *data);
501 void (*unregister_framedone_handler)(struct omap_drm_private *priv,
502 enum omap_channel channel,
503 void (*handler)(void *), void *data);
504 };
505
506 int dss_install_mgr_ops(struct dss_device *dss,
507 const struct dss_mgr_ops *mgr_ops,
508 struct omap_drm_private *priv);
509 void dss_uninstall_mgr_ops(struct dss_device *dss);
510
511 void dss_mgr_set_timings(struct omap_dss_device *dssdev,
512 const struct videomode *vm);
513 void dss_mgr_set_lcd_config(struct omap_dss_device *dssdev,
514 const struct dss_lcd_mgr_config *config);
515 int dss_mgr_enable(struct omap_dss_device *dssdev);
516 void dss_mgr_disable(struct omap_dss_device *dssdev);
517 void dss_mgr_start_update(struct omap_dss_device *dssdev);
518 int dss_mgr_register_framedone_handler(struct omap_dss_device *dssdev,
519 void (*handler)(void *), void *data);
520 void dss_mgr_unregister_framedone_handler(struct omap_dss_device *dssdev,
521 void (*handler)(void *), void *data);
522
523 /* dispc ops */
524
525 struct dispc_ops {
526 u32 (*read_irqstatus)(struct dispc_device *dispc);
527 void (*clear_irqstatus)(struct dispc_device *dispc, u32 mask);
528 void (*write_irqenable)(struct dispc_device *dispc, u32 mask);
529
530 int (*request_irq)(struct dispc_device *dispc, irq_handler_t handler,
531 void *dev_id);
532 void (*free_irq)(struct dispc_device *dispc, void *dev_id);
533
534 int (*runtime_get)(struct dispc_device *dispc);
535 void (*runtime_put)(struct dispc_device *dispc);
536
537 int (*get_num_ovls)(struct dispc_device *dispc);
538 int (*get_num_mgrs)(struct dispc_device *dispc);
539
540 u32 (*get_memory_bandwidth_limit)(struct dispc_device *dispc);
541
542 void (*mgr_enable)(struct dispc_device *dispc,
543 enum omap_channel channel, bool enable);
544 bool (*mgr_is_enabled)(struct dispc_device *dispc,
545 enum omap_channel channel);
546 u32 (*mgr_get_vsync_irq)(struct dispc_device *dispc,
547 enum omap_channel channel);
548 u32 (*mgr_get_framedone_irq)(struct dispc_device *dispc,
549 enum omap_channel channel);
550 u32 (*mgr_get_sync_lost_irq)(struct dispc_device *dispc,
551 enum omap_channel channel);
552 bool (*mgr_go_busy)(struct dispc_device *dispc,
553 enum omap_channel channel);
554 void (*mgr_go)(struct dispc_device *dispc, enum omap_channel channel);
555 void (*mgr_set_lcd_config)(struct dispc_device *dispc,
556 enum omap_channel channel,
557 const struct dss_lcd_mgr_config *config);
558 int (*mgr_check_timings)(struct dispc_device *dispc,
559 enum omap_channel channel,
560 const struct videomode *vm);
561 void (*mgr_set_timings)(struct dispc_device *dispc,
562 enum omap_channel channel,
563 const struct videomode *vm);
564 void (*mgr_setup)(struct dispc_device *dispc, enum omap_channel channel,
565 const struct omap_overlay_manager_info *info);
566 u32 (*mgr_gamma_size)(struct dispc_device *dispc,
567 enum omap_channel channel);
568 void (*mgr_set_gamma)(struct dispc_device *dispc,
569 enum omap_channel channel,
570 const struct drm_color_lut *lut,
571 unsigned int length);
572
573 int (*ovl_enable)(struct dispc_device *dispc, enum omap_plane_id plane,
574 bool enable);
575 int (*ovl_setup)(struct dispc_device *dispc, enum omap_plane_id plane,
576 const struct omap_overlay_info *oi,
577 const struct videomode *vm, bool mem_to_mem,
578 enum omap_channel channel);
579
580 const u32 *(*ovl_get_color_modes)(struct dispc_device *dispc,
581 enum omap_plane_id plane);
582
583 u32 (*wb_get_framedone_irq)(struct dispc_device *dispc);
584 int (*wb_setup)(struct dispc_device *dispc,
585 const struct omap_dss_writeback_info *wi,
586 bool mem_to_mem, const struct videomode *vm,
587 enum dss_writeback_channel channel_in);
588 bool (*has_writeback)(struct dispc_device *dispc);
589 bool (*wb_go_busy)(struct dispc_device *dispc);
590 void (*wb_go)(struct dispc_device *dispc);
591 };
592
593 struct dispc_device *dispc_get_dispc(struct dss_device *dss);
594 const struct dispc_ops *dispc_get_ops(struct dss_device *dss);
595
596 bool omapdss_stack_is_ready(void);
597 void omapdss_gather_components(struct device *dev);
598
599 #endif /* __OMAP_DRM_DSS_H */
600