1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2015-2018, 2020-2021 The Linux Foundation. All rights reserved.
3 */
4
5 #define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__
6 #include "dpu_encoder_phys.h"
7 #include "dpu_hw_interrupts.h"
8 #include "dpu_hw_merge3d.h"
9 #include "dpu_core_irq.h"
10 #include "dpu_formats.h"
11 #include "dpu_trace.h"
12 #include "disp/msm_disp_snapshot.h"
13
14 #define DPU_DEBUG_VIDENC(e, fmt, ...) DPU_DEBUG("enc%d intf%d " fmt, \
15 (e) && (e)->parent ? \
16 (e)->parent->base.id : -1, \
17 (e) && (e)->hw_intf ? \
18 (e)->hw_intf->idx - INTF_0 : -1, ##__VA_ARGS__)
19
20 #define DPU_ERROR_VIDENC(e, fmt, ...) DPU_ERROR("enc%d intf%d " fmt, \
21 (e) && (e)->parent ? \
22 (e)->parent->base.id : -1, \
23 (e) && (e)->hw_intf ? \
24 (e)->hw_intf->idx - INTF_0 : -1, ##__VA_ARGS__)
25
26 #define to_dpu_encoder_phys_vid(x) \
27 container_of(x, struct dpu_encoder_phys_vid, base)
28
dpu_encoder_phys_vid_is_master(struct dpu_encoder_phys * phys_enc)29 static bool dpu_encoder_phys_vid_is_master(
30 struct dpu_encoder_phys *phys_enc)
31 {
32 bool ret = false;
33
34 if (phys_enc->split_role != ENC_ROLE_SLAVE)
35 ret = true;
36
37 return ret;
38 }
39
drm_mode_to_intf_timing_params(const struct dpu_encoder_phys * phys_enc,const struct drm_display_mode * mode,struct intf_timing_params * timing)40 static void drm_mode_to_intf_timing_params(
41 const struct dpu_encoder_phys *phys_enc,
42 const struct drm_display_mode *mode,
43 struct intf_timing_params *timing)
44 {
45 memset(timing, 0, sizeof(*timing));
46
47 if ((mode->htotal < mode->hsync_end)
48 || (mode->hsync_start < mode->hdisplay)
49 || (mode->vtotal < mode->vsync_end)
50 || (mode->vsync_start < mode->vdisplay)
51 || (mode->hsync_end < mode->hsync_start)
52 || (mode->vsync_end < mode->vsync_start)) {
53 DPU_ERROR(
54 "invalid params - hstart:%d,hend:%d,htot:%d,hdisplay:%d\n",
55 mode->hsync_start, mode->hsync_end,
56 mode->htotal, mode->hdisplay);
57 DPU_ERROR("vstart:%d,vend:%d,vtot:%d,vdisplay:%d\n",
58 mode->vsync_start, mode->vsync_end,
59 mode->vtotal, mode->vdisplay);
60 return;
61 }
62
63 /*
64 * https://www.kernel.org/doc/htmldocs/drm/ch02s05.html
65 * Active Region Front Porch Sync Back Porch
66 * <-----------------><------------><-----><----------->
67 * <- [hv]display --->
68 * <--------- [hv]sync_start ------>
69 * <----------------- [hv]sync_end ------->
70 * <---------------------------- [hv]total ------------->
71 */
72 timing->width = mode->hdisplay; /* active width */
73 timing->height = mode->vdisplay; /* active height */
74 timing->xres = timing->width;
75 timing->yres = timing->height;
76 timing->h_back_porch = mode->htotal - mode->hsync_end;
77 timing->h_front_porch = mode->hsync_start - mode->hdisplay;
78 timing->v_back_porch = mode->vtotal - mode->vsync_end;
79 timing->v_front_porch = mode->vsync_start - mode->vdisplay;
80 timing->hsync_pulse_width = mode->hsync_end - mode->hsync_start;
81 timing->vsync_pulse_width = mode->vsync_end - mode->vsync_start;
82 timing->hsync_polarity = (mode->flags & DRM_MODE_FLAG_NHSYNC) ? 1 : 0;
83 timing->vsync_polarity = (mode->flags & DRM_MODE_FLAG_NVSYNC) ? 1 : 0;
84 timing->border_clr = 0;
85 timing->underflow_clr = 0xff;
86 timing->hsync_skew = mode->hskew;
87
88 /* DSI controller cannot handle active-low sync signals. */
89 if (phys_enc->hw_intf->cap->type == INTF_DSI) {
90 timing->hsync_polarity = 0;
91 timing->vsync_polarity = 0;
92 }
93
94 /* for DP/EDP, Shift timings to align it to bottom right */
95 if (phys_enc->hw_intf->cap->type == INTF_DP) {
96 timing->h_back_porch += timing->h_front_porch;
97 timing->h_front_porch = 0;
98 timing->v_back_porch += timing->v_front_porch;
99 timing->v_front_porch = 0;
100 }
101
102 timing->wide_bus_en = dpu_encoder_is_widebus_enabled(phys_enc->parent);
103
104 /*
105 * for DP, divide the horizonal parameters by 2 when
106 * widebus is enabled
107 */
108 if (phys_enc->hw_intf->cap->type == INTF_DP && timing->wide_bus_en) {
109 timing->width = timing->width >> 1;
110 timing->xres = timing->xres >> 1;
111 timing->h_back_porch = timing->h_back_porch >> 1;
112 timing->h_front_porch = timing->h_front_porch >> 1;
113 timing->hsync_pulse_width = timing->hsync_pulse_width >> 1;
114 }
115 }
116
get_horizontal_total(const struct intf_timing_params * timing)117 static u32 get_horizontal_total(const struct intf_timing_params *timing)
118 {
119 u32 active = timing->xres;
120 u32 inactive =
121 timing->h_back_porch + timing->h_front_porch +
122 timing->hsync_pulse_width;
123 return active + inactive;
124 }
125
get_vertical_total(const struct intf_timing_params * timing)126 static u32 get_vertical_total(const struct intf_timing_params *timing)
127 {
128 u32 active = timing->yres;
129 u32 inactive =
130 timing->v_back_porch + timing->v_front_porch +
131 timing->vsync_pulse_width;
132 return active + inactive;
133 }
134
135 /*
136 * programmable_fetch_get_num_lines:
137 * Number of fetch lines in vertical front porch
138 * @timing: Pointer to the intf timing information for the requested mode
139 *
140 * Returns the number of fetch lines in vertical front porch at which mdp
141 * can start fetching the next frame.
142 *
143 * Number of needed prefetch lines is anything that cannot be absorbed in the
144 * start of frame time (back porch + vsync pulse width).
145 *
146 * Some panels have very large VFP, however we only need a total number of
147 * lines based on the chip worst case latencies.
148 */
programmable_fetch_get_num_lines(struct dpu_encoder_phys * phys_enc,const struct intf_timing_params * timing)149 static u32 programmable_fetch_get_num_lines(
150 struct dpu_encoder_phys *phys_enc,
151 const struct intf_timing_params *timing)
152 {
153 u32 worst_case_needed_lines =
154 phys_enc->hw_intf->cap->prog_fetch_lines_worst_case;
155 u32 start_of_frame_lines =
156 timing->v_back_porch + timing->vsync_pulse_width;
157 u32 needed_vfp_lines = worst_case_needed_lines - start_of_frame_lines;
158 u32 actual_vfp_lines = 0;
159
160 /* Fetch must be outside active lines, otherwise undefined. */
161 if (start_of_frame_lines >= worst_case_needed_lines) {
162 DPU_DEBUG_VIDENC(phys_enc,
163 "prog fetch is not needed, large vbp+vsw\n");
164 actual_vfp_lines = 0;
165 } else if (timing->v_front_porch < needed_vfp_lines) {
166 /* Warn fetch needed, but not enough porch in panel config */
167 pr_warn_once
168 ("low vbp+vfp may lead to perf issues in some cases\n");
169 DPU_DEBUG_VIDENC(phys_enc,
170 "less vfp than fetch req, using entire vfp\n");
171 actual_vfp_lines = timing->v_front_porch;
172 } else {
173 DPU_DEBUG_VIDENC(phys_enc, "room in vfp for needed prefetch\n");
174 actual_vfp_lines = needed_vfp_lines;
175 }
176
177 DPU_DEBUG_VIDENC(phys_enc,
178 "v_front_porch %u v_back_porch %u vsync_pulse_width %u\n",
179 timing->v_front_porch, timing->v_back_porch,
180 timing->vsync_pulse_width);
181 DPU_DEBUG_VIDENC(phys_enc,
182 "wc_lines %u needed_vfp_lines %u actual_vfp_lines %u\n",
183 worst_case_needed_lines, needed_vfp_lines, actual_vfp_lines);
184
185 return actual_vfp_lines;
186 }
187
188 /*
189 * programmable_fetch_config: Programs HW to prefetch lines by offsetting
190 * the start of fetch into the vertical front porch for cases where the
191 * vsync pulse width and vertical back porch time is insufficient
192 *
193 * Gets # of lines to pre-fetch, then calculate VSYNC counter value.
194 * HW layer requires VSYNC counter of first pixel of tgt VFP line.
195 *
196 * @timing: Pointer to the intf timing information for the requested mode
197 */
programmable_fetch_config(struct dpu_encoder_phys * phys_enc,const struct intf_timing_params * timing)198 static void programmable_fetch_config(struct dpu_encoder_phys *phys_enc,
199 const struct intf_timing_params *timing)
200 {
201 struct intf_prog_fetch f = { 0 };
202 u32 vfp_fetch_lines = 0;
203 u32 horiz_total = 0;
204 u32 vert_total = 0;
205 u32 vfp_fetch_start_vsync_counter = 0;
206 unsigned long lock_flags;
207
208 if (WARN_ON_ONCE(!phys_enc->hw_intf->ops.setup_prg_fetch))
209 return;
210
211 vfp_fetch_lines = programmable_fetch_get_num_lines(phys_enc, timing);
212 if (vfp_fetch_lines) {
213 vert_total = get_vertical_total(timing);
214 horiz_total = get_horizontal_total(timing);
215 vfp_fetch_start_vsync_counter =
216 (vert_total - vfp_fetch_lines) * horiz_total + 1;
217 f.enable = 1;
218 f.fetch_start = vfp_fetch_start_vsync_counter;
219 }
220
221 DPU_DEBUG_VIDENC(phys_enc,
222 "vfp_fetch_lines %u vfp_fetch_start_vsync_counter %u\n",
223 vfp_fetch_lines, vfp_fetch_start_vsync_counter);
224
225 spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
226 phys_enc->hw_intf->ops.setup_prg_fetch(phys_enc->hw_intf, &f);
227 spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
228 }
229
dpu_encoder_phys_vid_setup_timing_engine(struct dpu_encoder_phys * phys_enc)230 static void dpu_encoder_phys_vid_setup_timing_engine(
231 struct dpu_encoder_phys *phys_enc)
232 {
233 struct drm_display_mode mode;
234 struct intf_timing_params timing_params = { 0 };
235 const struct dpu_format *fmt = NULL;
236 u32 fmt_fourcc = DRM_FORMAT_RGB888;
237 unsigned long lock_flags;
238 struct dpu_hw_intf_cfg intf_cfg = { 0 };
239
240 drm_mode_init(&mode, &phys_enc->cached_mode);
241
242 if (!phys_enc->hw_ctl->ops.setup_intf_cfg) {
243 DPU_ERROR("invalid encoder %d\n", phys_enc != NULL);
244 return;
245 }
246
247 if (!phys_enc->hw_intf->ops.setup_timing_gen) {
248 DPU_ERROR("timing engine setup is not supported\n");
249 return;
250 }
251
252 DPU_DEBUG_VIDENC(phys_enc, "enabling mode:\n");
253 drm_mode_debug_printmodeline(&mode);
254
255 if (phys_enc->split_role != ENC_ROLE_SOLO) {
256 mode.hdisplay >>= 1;
257 mode.htotal >>= 1;
258 mode.hsync_start >>= 1;
259 mode.hsync_end >>= 1;
260
261 DPU_DEBUG_VIDENC(phys_enc,
262 "split_role %d, halve horizontal %d %d %d %d\n",
263 phys_enc->split_role,
264 mode.hdisplay, mode.htotal,
265 mode.hsync_start, mode.hsync_end);
266 }
267
268 drm_mode_to_intf_timing_params(phys_enc, &mode, &timing_params);
269
270 fmt = dpu_get_dpu_format(fmt_fourcc);
271 DPU_DEBUG_VIDENC(phys_enc, "fmt_fourcc 0x%X\n", fmt_fourcc);
272
273 intf_cfg.intf = phys_enc->hw_intf->idx;
274 intf_cfg.intf_mode_sel = DPU_CTL_MODE_SEL_VID;
275 intf_cfg.stream_sel = 0; /* Don't care value for video mode */
276 intf_cfg.mode_3d = dpu_encoder_helper_get_3d_blend_mode(phys_enc);
277 intf_cfg.dsc = dpu_encoder_helper_get_dsc(phys_enc);
278 if (phys_enc->hw_pp->merge_3d)
279 intf_cfg.merge_3d = phys_enc->hw_pp->merge_3d->idx;
280
281 spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
282 phys_enc->hw_intf->ops.setup_timing_gen(phys_enc->hw_intf,
283 &timing_params, fmt);
284 phys_enc->hw_ctl->ops.setup_intf_cfg(phys_enc->hw_ctl, &intf_cfg);
285
286 /* setup which pp blk will connect to this intf */
287 if (phys_enc->hw_intf->ops.bind_pingpong_blk)
288 phys_enc->hw_intf->ops.bind_pingpong_blk(
289 phys_enc->hw_intf,
290 true,
291 phys_enc->hw_pp->idx);
292
293 if (phys_enc->hw_pp->merge_3d)
294 phys_enc->hw_pp->merge_3d->ops.setup_3d_mode(phys_enc->hw_pp->merge_3d, intf_cfg.mode_3d);
295
296 spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
297
298 programmable_fetch_config(phys_enc, &timing_params);
299 }
300
dpu_encoder_phys_vid_vblank_irq(void * arg,int irq_idx)301 static void dpu_encoder_phys_vid_vblank_irq(void *arg, int irq_idx)
302 {
303 struct dpu_encoder_phys *phys_enc = arg;
304 struct dpu_hw_ctl *hw_ctl;
305 unsigned long lock_flags;
306 u32 flush_register = 0;
307
308 hw_ctl = phys_enc->hw_ctl;
309
310 DPU_ATRACE_BEGIN("vblank_irq");
311
312 dpu_encoder_vblank_callback(phys_enc->parent, phys_enc);
313
314 atomic_read(&phys_enc->pending_kickoff_cnt);
315
316 /*
317 * only decrement the pending flush count if we've actually flushed
318 * hardware. due to sw irq latency, vblank may have already happened
319 * so we need to double-check with hw that it accepted the flush bits
320 */
321 spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
322 if (hw_ctl->ops.get_flush_register)
323 flush_register = hw_ctl->ops.get_flush_register(hw_ctl);
324
325 if (!(flush_register & hw_ctl->ops.get_pending_flush(hw_ctl)))
326 atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0);
327 spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
328
329 /* Signal any waiting atomic commit thread */
330 wake_up_all(&phys_enc->pending_kickoff_wq);
331
332 dpu_encoder_frame_done_callback(phys_enc->parent, phys_enc,
333 DPU_ENCODER_FRAME_EVENT_DONE);
334
335 DPU_ATRACE_END("vblank_irq");
336 }
337
dpu_encoder_phys_vid_underrun_irq(void * arg,int irq_idx)338 static void dpu_encoder_phys_vid_underrun_irq(void *arg, int irq_idx)
339 {
340 struct dpu_encoder_phys *phys_enc = arg;
341
342 dpu_encoder_underrun_callback(phys_enc->parent, phys_enc);
343 }
344
dpu_encoder_phys_vid_needs_single_flush(struct dpu_encoder_phys * phys_enc)345 static bool dpu_encoder_phys_vid_needs_single_flush(
346 struct dpu_encoder_phys *phys_enc)
347 {
348 return phys_enc->split_role != ENC_ROLE_SOLO;
349 }
350
dpu_encoder_phys_vid_atomic_mode_set(struct dpu_encoder_phys * phys_enc,struct drm_crtc_state * crtc_state,struct drm_connector_state * conn_state)351 static void dpu_encoder_phys_vid_atomic_mode_set(
352 struct dpu_encoder_phys *phys_enc,
353 struct drm_crtc_state *crtc_state,
354 struct drm_connector_state *conn_state)
355 {
356 phys_enc->irq[INTR_IDX_VSYNC] = phys_enc->hw_intf->cap->intr_vsync;
357
358 phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun;
359 }
360
dpu_encoder_phys_vid_control_vblank_irq(struct dpu_encoder_phys * phys_enc,bool enable)361 static int dpu_encoder_phys_vid_control_vblank_irq(
362 struct dpu_encoder_phys *phys_enc,
363 bool enable)
364 {
365 int ret = 0;
366 int refcount;
367
368 refcount = atomic_read(&phys_enc->vblank_refcount);
369
370 /* Slave encoders don't report vblank */
371 if (!dpu_encoder_phys_vid_is_master(phys_enc))
372 goto end;
373
374 /* protect against negative */
375 if (!enable && refcount == 0) {
376 ret = -EINVAL;
377 goto end;
378 }
379
380 DRM_DEBUG_VBL("id:%u enable=%d/%d\n", DRMID(phys_enc->parent), enable,
381 atomic_read(&phys_enc->vblank_refcount));
382
383 if (enable && atomic_inc_return(&phys_enc->vblank_refcount) == 1)
384 ret = dpu_core_irq_register_callback(phys_enc->dpu_kms,
385 phys_enc->irq[INTR_IDX_VSYNC],
386 dpu_encoder_phys_vid_vblank_irq,
387 phys_enc);
388 else if (!enable && atomic_dec_return(&phys_enc->vblank_refcount) == 0)
389 ret = dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
390 phys_enc->irq[INTR_IDX_VSYNC]);
391
392 end:
393 if (ret) {
394 DRM_ERROR("failed: id:%u intf:%d ret:%d enable:%d refcnt:%d\n",
395 DRMID(phys_enc->parent),
396 phys_enc->hw_intf->idx - INTF_0, ret, enable,
397 refcount);
398 }
399 return ret;
400 }
401
dpu_encoder_phys_vid_enable(struct dpu_encoder_phys * phys_enc)402 static void dpu_encoder_phys_vid_enable(struct dpu_encoder_phys *phys_enc)
403 {
404 struct dpu_hw_ctl *ctl;
405
406 ctl = phys_enc->hw_ctl;
407
408 DPU_DEBUG_VIDENC(phys_enc, "\n");
409
410 if (WARN_ON(!phys_enc->hw_intf->ops.enable_timing))
411 return;
412
413 dpu_encoder_helper_split_config(phys_enc, phys_enc->hw_intf->idx);
414
415 dpu_encoder_phys_vid_setup_timing_engine(phys_enc);
416
417 /*
418 * For single flush cases (dual-ctl or pp-split), skip setting the
419 * flush bit for the slave intf, since both intfs use same ctl
420 * and HW will only flush the master.
421 */
422 if (dpu_encoder_phys_vid_needs_single_flush(phys_enc) &&
423 !dpu_encoder_phys_vid_is_master(phys_enc))
424 goto skip_flush;
425
426 ctl->ops.update_pending_flush_intf(ctl, phys_enc->hw_intf->idx);
427 if (ctl->ops.update_pending_flush_merge_3d && phys_enc->hw_pp->merge_3d)
428 ctl->ops.update_pending_flush_merge_3d(ctl, phys_enc->hw_pp->merge_3d->idx);
429
430 skip_flush:
431 DPU_DEBUG_VIDENC(phys_enc,
432 "update pending flush ctl %d intf %d\n",
433 ctl->idx - CTL_0, phys_enc->hw_intf->idx);
434
435 atomic_set(&phys_enc->underrun_cnt, 0);
436
437 /* ctl_flush & timing engine enable will be triggered by framework */
438 if (phys_enc->enable_state == DPU_ENC_DISABLED)
439 phys_enc->enable_state = DPU_ENC_ENABLING;
440 }
441
dpu_encoder_phys_vid_destroy(struct dpu_encoder_phys * phys_enc)442 static void dpu_encoder_phys_vid_destroy(struct dpu_encoder_phys *phys_enc)
443 {
444 DPU_DEBUG_VIDENC(phys_enc, "\n");
445 kfree(phys_enc);
446 }
447
dpu_encoder_phys_vid_wait_for_vblank(struct dpu_encoder_phys * phys_enc)448 static int dpu_encoder_phys_vid_wait_for_vblank(
449 struct dpu_encoder_phys *phys_enc)
450 {
451 struct dpu_encoder_wait_info wait_info;
452 int ret;
453
454 wait_info.wq = &phys_enc->pending_kickoff_wq;
455 wait_info.atomic_cnt = &phys_enc->pending_kickoff_cnt;
456 wait_info.timeout_ms = KICKOFF_TIMEOUT_MS;
457
458 if (!dpu_encoder_phys_vid_is_master(phys_enc)) {
459 return 0;
460 }
461
462 /* Wait for kickoff to complete */
463 ret = dpu_encoder_helper_wait_for_irq(phys_enc,
464 phys_enc->irq[INTR_IDX_VSYNC],
465 dpu_encoder_phys_vid_vblank_irq,
466 &wait_info);
467
468 if (ret == -ETIMEDOUT) {
469 dpu_encoder_helper_report_irq_timeout(phys_enc, INTR_IDX_VSYNC);
470 }
471
472 return ret;
473 }
474
dpu_encoder_phys_vid_wait_for_commit_done(struct dpu_encoder_phys * phys_enc)475 static int dpu_encoder_phys_vid_wait_for_commit_done(
476 struct dpu_encoder_phys *phys_enc)
477 {
478 struct dpu_hw_ctl *hw_ctl = phys_enc->hw_ctl;
479 int ret;
480
481 if (!hw_ctl)
482 return 0;
483
484 ret = wait_event_timeout(phys_enc->pending_kickoff_wq,
485 (hw_ctl->ops.get_flush_register(hw_ctl) == 0),
486 msecs_to_jiffies(50));
487 if (ret <= 0) {
488 DPU_ERROR("vblank timeout\n");
489 return -ETIMEDOUT;
490 }
491
492 return 0;
493 }
494
dpu_encoder_phys_vid_prepare_for_kickoff(struct dpu_encoder_phys * phys_enc)495 static void dpu_encoder_phys_vid_prepare_for_kickoff(
496 struct dpu_encoder_phys *phys_enc)
497 {
498 struct dpu_hw_ctl *ctl;
499 int rc;
500 struct drm_encoder *drm_enc;
501
502 drm_enc = phys_enc->parent;
503
504 ctl = phys_enc->hw_ctl;
505 if (!ctl->ops.wait_reset_status)
506 return;
507
508 /*
509 * hw supports hardware initiated ctl reset, so before we kickoff a new
510 * frame, need to check and wait for hw initiated ctl reset completion
511 */
512 rc = ctl->ops.wait_reset_status(ctl);
513 if (rc) {
514 DPU_ERROR_VIDENC(phys_enc, "ctl %d reset failure: %d\n",
515 ctl->idx, rc);
516 msm_disp_snapshot_state(drm_enc->dev);
517 dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
518 phys_enc->irq[INTR_IDX_VSYNC]);
519 }
520 }
521
dpu_encoder_phys_vid_disable(struct dpu_encoder_phys * phys_enc)522 static void dpu_encoder_phys_vid_disable(struct dpu_encoder_phys *phys_enc)
523 {
524 unsigned long lock_flags;
525 int ret;
526
527 if (!phys_enc->parent || !phys_enc->parent->dev) {
528 DPU_ERROR("invalid encoder/device\n");
529 return;
530 }
531
532 if (!phys_enc->hw_intf) {
533 DPU_ERROR("invalid hw_intf %d hw_ctl %d\n",
534 phys_enc->hw_intf != NULL, phys_enc->hw_ctl != NULL);
535 return;
536 }
537
538 if (WARN_ON(!phys_enc->hw_intf->ops.enable_timing))
539 return;
540
541 if (phys_enc->enable_state == DPU_ENC_DISABLED) {
542 DPU_ERROR("already disabled\n");
543 return;
544 }
545
546 spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
547 phys_enc->hw_intf->ops.enable_timing(phys_enc->hw_intf, 0);
548 if (dpu_encoder_phys_vid_is_master(phys_enc))
549 dpu_encoder_phys_inc_pending(phys_enc);
550 spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
551
552 /*
553 * Wait for a vsync so we know the ENABLE=0 latched before
554 * the (connector) source of the vsync's gets disabled,
555 * otherwise we end up in a funny state if we re-enable
556 * before the disable latches, which results that some of
557 * the settings changes for the new modeset (like new
558 * scanout buffer) don't latch properly..
559 */
560 if (dpu_encoder_phys_vid_is_master(phys_enc)) {
561 ret = dpu_encoder_phys_vid_wait_for_vblank(phys_enc);
562 if (ret) {
563 atomic_set(&phys_enc->pending_kickoff_cnt, 0);
564 DRM_ERROR("wait disable failed: id:%u intf:%d ret:%d\n",
565 DRMID(phys_enc->parent),
566 phys_enc->hw_intf->idx - INTF_0, ret);
567 }
568 }
569
570 phys_enc->enable_state = DPU_ENC_DISABLED;
571 }
572
dpu_encoder_phys_vid_handle_post_kickoff(struct dpu_encoder_phys * phys_enc)573 static void dpu_encoder_phys_vid_handle_post_kickoff(
574 struct dpu_encoder_phys *phys_enc)
575 {
576 unsigned long lock_flags;
577
578 /*
579 * Video mode must flush CTL before enabling timing engine
580 * Video encoders need to turn on their interfaces now
581 */
582 if (phys_enc->enable_state == DPU_ENC_ENABLING) {
583 trace_dpu_enc_phys_vid_post_kickoff(DRMID(phys_enc->parent),
584 phys_enc->hw_intf->idx - INTF_0);
585 spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
586 phys_enc->hw_intf->ops.enable_timing(phys_enc->hw_intf, 1);
587 spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
588 phys_enc->enable_state = DPU_ENC_ENABLED;
589 }
590 }
591
dpu_encoder_phys_vid_irq_control(struct dpu_encoder_phys * phys_enc,bool enable)592 static void dpu_encoder_phys_vid_irq_control(struct dpu_encoder_phys *phys_enc,
593 bool enable)
594 {
595 int ret;
596
597 trace_dpu_enc_phys_vid_irq_ctrl(DRMID(phys_enc->parent),
598 phys_enc->hw_intf->idx - INTF_0,
599 enable,
600 atomic_read(&phys_enc->vblank_refcount));
601
602 if (enable) {
603 ret = dpu_encoder_phys_vid_control_vblank_irq(phys_enc, true);
604 if (WARN_ON(ret))
605 return;
606
607 dpu_core_irq_register_callback(phys_enc->dpu_kms,
608 phys_enc->irq[INTR_IDX_UNDERRUN],
609 dpu_encoder_phys_vid_underrun_irq,
610 phys_enc);
611 } else {
612 dpu_encoder_phys_vid_control_vblank_irq(phys_enc, false);
613 dpu_core_irq_unregister_callback(phys_enc->dpu_kms,
614 phys_enc->irq[INTR_IDX_UNDERRUN]);
615 }
616 }
617
dpu_encoder_phys_vid_get_line_count(struct dpu_encoder_phys * phys_enc)618 static int dpu_encoder_phys_vid_get_line_count(
619 struct dpu_encoder_phys *phys_enc)
620 {
621 if (!dpu_encoder_phys_vid_is_master(phys_enc))
622 return -EINVAL;
623
624 if (!phys_enc->hw_intf || !phys_enc->hw_intf->ops.get_line_count)
625 return -EINVAL;
626
627 return phys_enc->hw_intf->ops.get_line_count(phys_enc->hw_intf);
628 }
629
dpu_encoder_phys_vid_get_frame_count(struct dpu_encoder_phys * phys_enc)630 static int dpu_encoder_phys_vid_get_frame_count(
631 struct dpu_encoder_phys *phys_enc)
632 {
633 struct intf_status s = {0};
634 u32 fetch_start = 0;
635 struct drm_display_mode mode;
636
637 drm_mode_init(&mode, &phys_enc->cached_mode);
638
639 if (!dpu_encoder_phys_vid_is_master(phys_enc))
640 return -EINVAL;
641
642 if (!phys_enc->hw_intf || !phys_enc->hw_intf->ops.get_status)
643 return -EINVAL;
644
645 phys_enc->hw_intf->ops.get_status(phys_enc->hw_intf, &s);
646
647 if (s.is_prog_fetch_en && s.is_en) {
648 fetch_start = mode.vtotal - (mode.vsync_start - mode.vdisplay);
649 if ((s.line_count > fetch_start) &&
650 (s.line_count <= mode.vtotal))
651 return s.frame_count + 1;
652 }
653
654 return s.frame_count;
655 }
656
dpu_encoder_phys_vid_init_ops(struct dpu_encoder_phys_ops * ops)657 static void dpu_encoder_phys_vid_init_ops(struct dpu_encoder_phys_ops *ops)
658 {
659 ops->is_master = dpu_encoder_phys_vid_is_master;
660 ops->atomic_mode_set = dpu_encoder_phys_vid_atomic_mode_set;
661 ops->enable = dpu_encoder_phys_vid_enable;
662 ops->disable = dpu_encoder_phys_vid_disable;
663 ops->destroy = dpu_encoder_phys_vid_destroy;
664 ops->control_vblank_irq = dpu_encoder_phys_vid_control_vblank_irq;
665 ops->wait_for_commit_done = dpu_encoder_phys_vid_wait_for_commit_done;
666 ops->wait_for_vblank = dpu_encoder_phys_vid_wait_for_vblank;
667 ops->wait_for_tx_complete = dpu_encoder_phys_vid_wait_for_vblank;
668 ops->irq_control = dpu_encoder_phys_vid_irq_control;
669 ops->prepare_for_kickoff = dpu_encoder_phys_vid_prepare_for_kickoff;
670 ops->handle_post_kickoff = dpu_encoder_phys_vid_handle_post_kickoff;
671 ops->needs_single_flush = dpu_encoder_phys_vid_needs_single_flush;
672 ops->get_line_count = dpu_encoder_phys_vid_get_line_count;
673 ops->get_frame_count = dpu_encoder_phys_vid_get_frame_count;
674 }
675
dpu_encoder_phys_vid_init(struct dpu_enc_phys_init_params * p)676 struct dpu_encoder_phys *dpu_encoder_phys_vid_init(
677 struct dpu_enc_phys_init_params *p)
678 {
679 struct dpu_encoder_phys *phys_enc = NULL;
680 int i;
681
682 if (!p) {
683 DPU_ERROR("failed to create encoder due to invalid parameter\n");
684 return ERR_PTR(-EINVAL);
685 }
686
687 phys_enc = kzalloc(sizeof(*phys_enc), GFP_KERNEL);
688 if (!phys_enc) {
689 DPU_ERROR("failed to create encoder due to memory allocation error\n");
690 return ERR_PTR(-ENOMEM);
691 }
692
693 phys_enc->hw_mdptop = p->dpu_kms->hw_mdp;
694 phys_enc->intf_idx = p->intf_idx;
695
696 DPU_DEBUG_VIDENC(phys_enc, "\n");
697
698 dpu_encoder_phys_vid_init_ops(&phys_enc->ops);
699 phys_enc->parent = p->parent;
700 phys_enc->dpu_kms = p->dpu_kms;
701 phys_enc->split_role = p->split_role;
702 phys_enc->intf_mode = INTF_MODE_VIDEO;
703 phys_enc->enc_spinlock = p->enc_spinlock;
704 for (i = 0; i < ARRAY_SIZE(phys_enc->irq); i++)
705 phys_enc->irq[i] = -EINVAL;
706
707 atomic_set(&phys_enc->vblank_refcount, 0);
708 atomic_set(&phys_enc->pending_kickoff_cnt, 0);
709 init_waitqueue_head(&phys_enc->pending_kickoff_wq);
710 phys_enc->enable_state = DPU_ENC_DISABLED;
711
712 DPU_DEBUG_VIDENC(phys_enc, "created intf idx:%d\n", p->intf_idx);
713
714 return phys_enc;
715 }
716