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1/*
2 * shmob_drm_crtc.c -- SH Mobile DRM CRTCs
3 *
4 * Copyright (C) 2012 Renesas Electronics Corporation
5 *
6 * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14#include <linux/backlight.h>
15#include <linux/clk.h>
16
17#include <drm/drmP.h>
18#include <drm/drm_crtc.h>
19#include <drm/drm_crtc_helper.h>
20#include <drm/drm_fb_cma_helper.h>
21#include <drm/drm_gem_cma_helper.h>
22#include <drm/drm_plane_helper.h>
23
24#include <video/sh_mobile_meram.h>
25
26#include "shmob_drm_backlight.h"
27#include "shmob_drm_crtc.h"
28#include "shmob_drm_drv.h"
29#include "shmob_drm_kms.h"
30#include "shmob_drm_plane.h"
31#include "shmob_drm_regs.h"
32
33/*
34 * TODO: panel support
35 */
36
37/* -----------------------------------------------------------------------------
38 * Clock management
39 */
40
41static int shmob_drm_clk_on(struct shmob_drm_device *sdev)
42{
43 int ret;
44
45 if (sdev->clock) {
46 ret = clk_prepare_enable(sdev->clock);
47 if (ret < 0)
48 return ret;
49 }
50#if 0
51 if (sdev->meram_dev && sdev->meram_dev->pdev)
52 pm_runtime_get_sync(&sdev->meram_dev->pdev->dev);
53#endif
54
55 return 0;
56}
57
58static void shmob_drm_clk_off(struct shmob_drm_device *sdev)
59{
60#if 0
61 if (sdev->meram_dev && sdev->meram_dev->pdev)
62 pm_runtime_put_sync(&sdev->meram_dev->pdev->dev);
63#endif
64 if (sdev->clock)
65 clk_disable_unprepare(sdev->clock);
66}
67
68/* -----------------------------------------------------------------------------
69 * CRTC
70 */
71
72static void shmob_drm_crtc_setup_geometry(struct shmob_drm_crtc *scrtc)
73{
74 struct drm_crtc *crtc = &scrtc->crtc;
75 struct shmob_drm_device *sdev = crtc->dev->dev_private;
76 const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
77 const struct drm_display_mode *mode = &crtc->mode;
78 u32 value;
79
80 value = sdev->ldmt1r
81 | ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : LDMT1R_VPOL)
82 | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : LDMT1R_HPOL)
83 | ((idata->flags & SHMOB_DRM_IFACE_FL_DWPOL) ? LDMT1R_DWPOL : 0)
84 | ((idata->flags & SHMOB_DRM_IFACE_FL_DIPOL) ? LDMT1R_DIPOL : 0)
85 | ((idata->flags & SHMOB_DRM_IFACE_FL_DAPOL) ? LDMT1R_DAPOL : 0)
86 | ((idata->flags & SHMOB_DRM_IFACE_FL_HSCNT) ? LDMT1R_HSCNT : 0)
87 | ((idata->flags & SHMOB_DRM_IFACE_FL_DWCNT) ? LDMT1R_DWCNT : 0);
88 lcdc_write(sdev, LDMT1R, value);
89
90 if (idata->interface >= SHMOB_DRM_IFACE_SYS8A &&
91 idata->interface <= SHMOB_DRM_IFACE_SYS24) {
92 /* Setup SYS bus. */
93 value = (idata->sys.cs_setup << LDMT2R_CSUP_SHIFT)
94 | (idata->sys.vsync_active_high ? LDMT2R_RSV : 0)
95 | (idata->sys.vsync_dir_input ? LDMT2R_VSEL : 0)
96 | (idata->sys.write_setup << LDMT2R_WCSC_SHIFT)
97 | (idata->sys.write_cycle << LDMT2R_WCEC_SHIFT)
98 | (idata->sys.write_strobe << LDMT2R_WCLW_SHIFT);
99 lcdc_write(sdev, LDMT2R, value);
100
101 value = (idata->sys.read_latch << LDMT3R_RDLC_SHIFT)
102 | (idata->sys.read_setup << LDMT3R_RCSC_SHIFT)
103 | (idata->sys.read_cycle << LDMT3R_RCEC_SHIFT)
104 | (idata->sys.read_strobe << LDMT3R_RCLW_SHIFT);
105 lcdc_write(sdev, LDMT3R, value);
106 }
107
108 value = ((mode->hdisplay / 8) << 16) /* HDCN */
109 | (mode->htotal / 8); /* HTCN */
110 lcdc_write(sdev, LDHCNR, value);
111
112 value = (((mode->hsync_end - mode->hsync_start) / 8) << 16) /* HSYNW */
113 | (mode->hsync_start / 8); /* HSYNP */
114 lcdc_write(sdev, LDHSYNR, value);
115
116 value = ((mode->hdisplay & 7) << 24) | ((mode->htotal & 7) << 16)
117 | (((mode->hsync_end - mode->hsync_start) & 7) << 8)
118 | (mode->hsync_start & 7);
119 lcdc_write(sdev, LDHAJR, value);
120
121 value = ((mode->vdisplay) << 16) /* VDLN */
122 | mode->vtotal; /* VTLN */
123 lcdc_write(sdev, LDVLNR, value);
124
125 value = ((mode->vsync_end - mode->vsync_start) << 16) /* VSYNW */
126 | mode->vsync_start; /* VSYNP */
127 lcdc_write(sdev, LDVSYNR, value);
128}
129
130static void shmob_drm_crtc_start_stop(struct shmob_drm_crtc *scrtc, bool start)
131{
132 struct shmob_drm_device *sdev = scrtc->crtc.dev->dev_private;
133 u32 value;
134
135 value = lcdc_read(sdev, LDCNT2R);
136 if (start)
137 lcdc_write(sdev, LDCNT2R, value | LDCNT2R_DO);
138 else
139 lcdc_write(sdev, LDCNT2R, value & ~LDCNT2R_DO);
140
141 /* Wait until power is applied/stopped. */
142 while (1) {
143 value = lcdc_read(sdev, LDPMR) & LDPMR_LPS;
144 if ((start && value) || (!start && !value))
145 break;
146
147 cpu_relax();
148 }
149
150 if (!start) {
151 /* Stop the dot clock. */
152 lcdc_write(sdev, LDDCKSTPR, LDDCKSTPR_DCKSTP);
153 }
154}
155
156/*
157 * shmob_drm_crtc_start - Configure and start the LCDC
158 * @scrtc: the SH Mobile CRTC
159 *
160 * Configure and start the LCDC device. External devices (clocks, MERAM, panels,
161 * ...) are not touched by this function.
162 */
163static void shmob_drm_crtc_start(struct shmob_drm_crtc *scrtc)
164{
165 struct drm_crtc *crtc = &scrtc->crtc;
166 struct shmob_drm_device *sdev = crtc->dev->dev_private;
167 const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
168 const struct shmob_drm_format_info *format;
169 struct drm_device *dev = sdev->ddev;
170 struct drm_plane *plane;
171 u32 value;
172 int ret;
173
174 if (scrtc->started)
175 return;
176
177 format = shmob_drm_format_info(crtc->primary->fb->pixel_format);
178 if (WARN_ON(format == NULL))
179 return;
180
181 /* Enable clocks before accessing the hardware. */
182 ret = shmob_drm_clk_on(sdev);
183 if (ret < 0)
184 return;
185
186 /* Reset and enable the LCDC. */
187 lcdc_write(sdev, LDCNT2R, lcdc_read(sdev, LDCNT2R) | LDCNT2R_BR);
188 lcdc_wait_bit(sdev, LDCNT2R, LDCNT2R_BR, 0);
189 lcdc_write(sdev, LDCNT2R, LDCNT2R_ME);
190
191 /* Stop the LCDC first and disable all interrupts. */
192 shmob_drm_crtc_start_stop(scrtc, false);
193 lcdc_write(sdev, LDINTR, 0);
194
195 /* Configure power supply, dot clocks and start them. */
196 lcdc_write(sdev, LDPMR, 0);
197
198 value = sdev->lddckr;
199 if (idata->clk_div) {
200 /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider
201 * denominator.
202 */
203 lcdc_write(sdev, LDDCKPAT1R, 0);
204 lcdc_write(sdev, LDDCKPAT2R, (1 << (idata->clk_div / 2)) - 1);
205
206 if (idata->clk_div == 1)
207 value |= LDDCKR_MOSEL;
208 else
209 value |= idata->clk_div;
210 }
211
212 lcdc_write(sdev, LDDCKR, value);
213 lcdc_write(sdev, LDDCKSTPR, 0);
214 lcdc_wait_bit(sdev, LDDCKSTPR, ~0, 0);
215
216 /* TODO: Setup SYS panel */
217
218 /* Setup geometry, format, frame buffer memory and operation mode. */
219 shmob_drm_crtc_setup_geometry(scrtc);
220
221 /* TODO: Handle YUV colorspaces. Hardcode REC709 for now. */
222 lcdc_write(sdev, LDDFR, format->lddfr | LDDFR_CF1);
223 lcdc_write(sdev, LDMLSR, scrtc->line_size);
224 lcdc_write(sdev, LDSA1R, scrtc->dma[0]);
225 if (format->yuv)
226 lcdc_write(sdev, LDSA2R, scrtc->dma[1]);
227 lcdc_write(sdev, LDSM1R, 0);
228
229 /* Word and long word swap. */
230 switch (format->fourcc) {
231 case DRM_FORMAT_RGB565:
232 case DRM_FORMAT_NV21:
233 case DRM_FORMAT_NV61:
234 case DRM_FORMAT_NV42:
235 value = LDDDSR_LS | LDDDSR_WS;
236 break;
237 case DRM_FORMAT_RGB888:
238 case DRM_FORMAT_NV12:
239 case DRM_FORMAT_NV16:
240 case DRM_FORMAT_NV24:
241 value = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS;
242 break;
243 case DRM_FORMAT_ARGB8888:
244 default:
245 value = LDDDSR_LS;
246 break;
247 }
248 lcdc_write(sdev, LDDDSR, value);
249
250 /* Setup planes. */
251 drm_for_each_legacy_plane(plane, dev) {
252 if (plane->crtc == crtc)
253 shmob_drm_plane_setup(plane);
254 }
255
256 /* Enable the display output. */
257 lcdc_write(sdev, LDCNT1R, LDCNT1R_DE);
258
259 shmob_drm_crtc_start_stop(scrtc, true);
260
261 scrtc->started = true;
262}
263
264static void shmob_drm_crtc_stop(struct shmob_drm_crtc *scrtc)
265{
266 struct drm_crtc *crtc = &scrtc->crtc;
267 struct shmob_drm_device *sdev = crtc->dev->dev_private;
268
269 if (!scrtc->started)
270 return;
271
272 /* Disable the MERAM cache. */
273 if (scrtc->cache) {
274 sh_mobile_meram_cache_free(sdev->meram, scrtc->cache);
275 scrtc->cache = NULL;
276 }
277
278 /* Stop the LCDC. */
279 shmob_drm_crtc_start_stop(scrtc, false);
280
281 /* Disable the display output. */
282 lcdc_write(sdev, LDCNT1R, 0);
283
284 /* Stop clocks. */
285 shmob_drm_clk_off(sdev);
286
287 scrtc->started = false;
288}
289
290void shmob_drm_crtc_suspend(struct shmob_drm_crtc *scrtc)
291{
292 shmob_drm_crtc_stop(scrtc);
293}
294
295void shmob_drm_crtc_resume(struct shmob_drm_crtc *scrtc)
296{
297 if (scrtc->dpms != DRM_MODE_DPMS_ON)
298 return;
299
300 shmob_drm_crtc_start(scrtc);
301}
302
303static void shmob_drm_crtc_compute_base(struct shmob_drm_crtc *scrtc,
304 int x, int y)
305{
306 struct drm_crtc *crtc = &scrtc->crtc;
307 struct drm_framebuffer *fb = crtc->primary->fb;
308 struct shmob_drm_device *sdev = crtc->dev->dev_private;
309 struct drm_gem_cma_object *gem;
310 unsigned int bpp;
311
312 bpp = scrtc->format->yuv ? 8 : scrtc->format->bpp;
313 gem = drm_fb_cma_get_gem_obj(fb, 0);
314 scrtc->dma[0] = gem->paddr + fb->offsets[0]
315 + y * fb->pitches[0] + x * bpp / 8;
316
317 if (scrtc->format->yuv) {
318 bpp = scrtc->format->bpp - 8;
319 gem = drm_fb_cma_get_gem_obj(fb, 1);
320 scrtc->dma[1] = gem->paddr + fb->offsets[1]
321 + y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
322 + x * (bpp == 16 ? 2 : 1);
323 }
324
325 if (scrtc->cache)
326 sh_mobile_meram_cache_update(sdev->meram, scrtc->cache,
327 scrtc->dma[0], scrtc->dma[1],
328 &scrtc->dma[0], &scrtc->dma[1]);
329}
330
331static void shmob_drm_crtc_update_base(struct shmob_drm_crtc *scrtc)
332{
333 struct drm_crtc *crtc = &scrtc->crtc;
334 struct shmob_drm_device *sdev = crtc->dev->dev_private;
335
336 shmob_drm_crtc_compute_base(scrtc, crtc->x, crtc->y);
337
338 lcdc_write_mirror(sdev, LDSA1R, scrtc->dma[0]);
339 if (scrtc->format->yuv)
340 lcdc_write_mirror(sdev, LDSA2R, scrtc->dma[1]);
341
342 lcdc_write(sdev, LDRCNTR, lcdc_read(sdev, LDRCNTR) ^ LDRCNTR_MRS);
343}
344
345#define to_shmob_crtc(c) container_of(c, struct shmob_drm_crtc, crtc)
346
347static void shmob_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
348{
349 struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
350
351 if (scrtc->dpms == mode)
352 return;
353
354 if (mode == DRM_MODE_DPMS_ON)
355 shmob_drm_crtc_start(scrtc);
356 else
357 shmob_drm_crtc_stop(scrtc);
358
359 scrtc->dpms = mode;
360}
361
362static void shmob_drm_crtc_mode_prepare(struct drm_crtc *crtc)
363{
364 shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
365}
366
367static int shmob_drm_crtc_mode_set(struct drm_crtc *crtc,
368 struct drm_display_mode *mode,
369 struct drm_display_mode *adjusted_mode,
370 int x, int y,
371 struct drm_framebuffer *old_fb)
372{
373 struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
374 struct shmob_drm_device *sdev = crtc->dev->dev_private;
375 const struct sh_mobile_meram_cfg *mdata = sdev->pdata->meram;
376 const struct shmob_drm_format_info *format;
377 void *cache;
378
379 format = shmob_drm_format_info(crtc->primary->fb->pixel_format);
380 if (format == NULL) {
381 dev_dbg(sdev->dev, "mode_set: unsupported format %08x\n",
382 crtc->primary->fb->pixel_format);
383 return -EINVAL;
384 }
385
386 scrtc->format = format;
387 scrtc->line_size = crtc->primary->fb->pitches[0];
388
389 if (sdev->meram) {
390 /* Enable MERAM cache if configured. We need to de-init
391 * configured ICBs before we can re-initialize them.
392 */
393 if (scrtc->cache) {
394 sh_mobile_meram_cache_free(sdev->meram, scrtc->cache);
395 scrtc->cache = NULL;
396 }
397
398 cache = sh_mobile_meram_cache_alloc(sdev->meram, mdata,
399 crtc->primary->fb->pitches[0],
400 adjusted_mode->vdisplay,
401 format->meram,
402 &scrtc->line_size);
403 if (!IS_ERR(cache))
404 scrtc->cache = cache;
405 }
406
407 shmob_drm_crtc_compute_base(scrtc, x, y);
408
409 return 0;
410}
411
412static void shmob_drm_crtc_mode_commit(struct drm_crtc *crtc)
413{
414 shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
415}
416
417static int shmob_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
418 struct drm_framebuffer *old_fb)
419{
420 shmob_drm_crtc_update_base(to_shmob_crtc(crtc));
421
422 return 0;
423}
424
425static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
426 .dpms = shmob_drm_crtc_dpms,
427 .prepare = shmob_drm_crtc_mode_prepare,
428 .commit = shmob_drm_crtc_mode_commit,
429 .mode_set = shmob_drm_crtc_mode_set,
430 .mode_set_base = shmob_drm_crtc_mode_set_base,
431};
432
433void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc)
434{
435 struct drm_pending_vblank_event *event;
436 struct drm_device *dev = scrtc->crtc.dev;
437 unsigned long flags;
438
439 spin_lock_irqsave(&dev->event_lock, flags);
440 event = scrtc->event;
441 scrtc->event = NULL;
442 if (event) {
443 drm_send_vblank_event(dev, 0, event);
444 drm_vblank_put(dev, 0);
445 }
446 spin_unlock_irqrestore(&dev->event_lock, flags);
447}
448
449static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc,
450 struct drm_framebuffer *fb,
451 struct drm_pending_vblank_event *event,
452 uint32_t page_flip_flags)
453{
454 struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
455 struct drm_device *dev = scrtc->crtc.dev;
456 unsigned long flags;
457
458 spin_lock_irqsave(&dev->event_lock, flags);
459 if (scrtc->event != NULL) {
460 spin_unlock_irqrestore(&dev->event_lock, flags);
461 return -EBUSY;
462 }
463 spin_unlock_irqrestore(&dev->event_lock, flags);
464
465 crtc->primary->fb = fb;
466 shmob_drm_crtc_update_base(scrtc);
467
468 if (event) {
469 event->pipe = 0;
470 drm_vblank_get(dev, 0);
471 spin_lock_irqsave(&dev->event_lock, flags);
472 scrtc->event = event;
473 spin_unlock_irqrestore(&dev->event_lock, flags);
474 }
475
476 return 0;
477}
478
479static const struct drm_crtc_funcs crtc_funcs = {
480 .destroy = drm_crtc_cleanup,
481 .set_config = drm_crtc_helper_set_config,
482 .page_flip = shmob_drm_crtc_page_flip,
483};
484
485int shmob_drm_crtc_create(struct shmob_drm_device *sdev)
486{
487 struct drm_crtc *crtc = &sdev->crtc.crtc;
488 int ret;
489
490 sdev->crtc.dpms = DRM_MODE_DPMS_OFF;
491
492 ret = drm_crtc_init(sdev->ddev, crtc, &crtc_funcs);
493 if (ret < 0)
494 return ret;
495
496 drm_crtc_helper_add(crtc, &crtc_helper_funcs);
497
498 return 0;
499}
500
501/* -----------------------------------------------------------------------------
502 * Encoder
503 */
504
505#define to_shmob_encoder(e) \
506 container_of(e, struct shmob_drm_encoder, encoder)
507
508static void shmob_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
509{
510 struct shmob_drm_encoder *senc = to_shmob_encoder(encoder);
511 struct shmob_drm_device *sdev = encoder->dev->dev_private;
512 struct shmob_drm_connector *scon = &sdev->connector;
513
514 if (senc->dpms == mode)
515 return;
516
517 shmob_drm_backlight_dpms(scon, mode);
518
519 senc->dpms = mode;
520}
521
522static bool shmob_drm_encoder_mode_fixup(struct drm_encoder *encoder,
523 const struct drm_display_mode *mode,
524 struct drm_display_mode *adjusted_mode)
525{
526 struct drm_device *dev = encoder->dev;
527 struct shmob_drm_device *sdev = dev->dev_private;
528 struct drm_connector *connector = &sdev->connector.connector;
529 const struct drm_display_mode *panel_mode;
530
531 if (list_empty(&connector->modes)) {
532 dev_dbg(dev->dev, "mode_fixup: empty modes list\n");
533 return false;
534 }
535
536 /* The flat panel mode is fixed, just copy it to the adjusted mode. */
537 panel_mode = list_first_entry(&connector->modes,
538 struct drm_display_mode, head);
539 drm_mode_copy(adjusted_mode, panel_mode);
540
541 return true;
542}
543
544static void shmob_drm_encoder_mode_prepare(struct drm_encoder *encoder)
545{
546 /* No-op, everything is handled in the CRTC code. */
547}
548
549static void shmob_drm_encoder_mode_set(struct drm_encoder *encoder,
550 struct drm_display_mode *mode,
551 struct drm_display_mode *adjusted_mode)
552{
553 /* No-op, everything is handled in the CRTC code. */
554}
555
556static void shmob_drm_encoder_mode_commit(struct drm_encoder *encoder)
557{
558 /* No-op, everything is handled in the CRTC code. */
559}
560
561static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
562 .dpms = shmob_drm_encoder_dpms,
563 .mode_fixup = shmob_drm_encoder_mode_fixup,
564 .prepare = shmob_drm_encoder_mode_prepare,
565 .commit = shmob_drm_encoder_mode_commit,
566 .mode_set = shmob_drm_encoder_mode_set,
567};
568
569static void shmob_drm_encoder_destroy(struct drm_encoder *encoder)
570{
571 drm_encoder_cleanup(encoder);
572}
573
574static const struct drm_encoder_funcs encoder_funcs = {
575 .destroy = shmob_drm_encoder_destroy,
576};
577
578int shmob_drm_encoder_create(struct shmob_drm_device *sdev)
579{
580 struct drm_encoder *encoder = &sdev->encoder.encoder;
581 int ret;
582
583 sdev->encoder.dpms = DRM_MODE_DPMS_OFF;
584
585 encoder->possible_crtcs = 1;
586
587 ret = drm_encoder_init(sdev->ddev, encoder, &encoder_funcs,
588 DRM_MODE_ENCODER_LVDS, NULL);
589 if (ret < 0)
590 return ret;
591
592 drm_encoder_helper_add(encoder, &encoder_helper_funcs);
593
594 return 0;
595}
596
597void shmob_drm_crtc_enable_vblank(struct shmob_drm_device *sdev, bool enable)
598{
599 unsigned long flags;
600 u32 ldintr;
601
602 /* Be careful not to acknowledge any pending interrupt. */
603 spin_lock_irqsave(&sdev->irq_lock, flags);
604 ldintr = lcdc_read(sdev, LDINTR) | LDINTR_STATUS_MASK;
605 if (enable)
606 ldintr |= LDINTR_VEE;
607 else
608 ldintr &= ~LDINTR_VEE;
609 lcdc_write(sdev, LDINTR, ldintr);
610 spin_unlock_irqrestore(&sdev->irq_lock, flags);
611}
612
613/* -----------------------------------------------------------------------------
614 * Connector
615 */
616
617#define to_shmob_connector(c) \
618 container_of(c, struct shmob_drm_connector, connector)
619
620static int shmob_drm_connector_get_modes(struct drm_connector *connector)
621{
622 struct shmob_drm_device *sdev = connector->dev->dev_private;
623 struct drm_display_mode *mode;
624
625 mode = drm_mode_create(connector->dev);
626 if (mode == NULL)
627 return 0;
628
629 mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
630 mode->clock = sdev->pdata->panel.mode.clock;
631 mode->hdisplay = sdev->pdata->panel.mode.hdisplay;
632 mode->hsync_start = sdev->pdata->panel.mode.hsync_start;
633 mode->hsync_end = sdev->pdata->panel.mode.hsync_end;
634 mode->htotal = sdev->pdata->panel.mode.htotal;
635 mode->vdisplay = sdev->pdata->panel.mode.vdisplay;
636 mode->vsync_start = sdev->pdata->panel.mode.vsync_start;
637 mode->vsync_end = sdev->pdata->panel.mode.vsync_end;
638 mode->vtotal = sdev->pdata->panel.mode.vtotal;
639 mode->flags = sdev->pdata->panel.mode.flags;
640
641 drm_mode_set_name(mode);
642 drm_mode_probed_add(connector, mode);
643
644 connector->display_info.width_mm = sdev->pdata->panel.width_mm;
645 connector->display_info.height_mm = sdev->pdata->panel.height_mm;
646
647 return 1;
648}
649
650static struct drm_encoder *
651shmob_drm_connector_best_encoder(struct drm_connector *connector)
652{
653 struct shmob_drm_connector *scon = to_shmob_connector(connector);
654
655 return scon->encoder;
656}
657
658static const struct drm_connector_helper_funcs connector_helper_funcs = {
659 .get_modes = shmob_drm_connector_get_modes,
660 .best_encoder = shmob_drm_connector_best_encoder,
661};
662
663static void shmob_drm_connector_destroy(struct drm_connector *connector)
664{
665 struct shmob_drm_connector *scon = to_shmob_connector(connector);
666
667 shmob_drm_backlight_exit(scon);
668 drm_connector_unregister(connector);
669 drm_connector_cleanup(connector);
670}
671
672static enum drm_connector_status
673shmob_drm_connector_detect(struct drm_connector *connector, bool force)
674{
675 return connector_status_connected;
676}
677
678static const struct drm_connector_funcs connector_funcs = {
679 .dpms = drm_helper_connector_dpms,
680 .detect = shmob_drm_connector_detect,
681 .fill_modes = drm_helper_probe_single_connector_modes,
682 .destroy = shmob_drm_connector_destroy,
683};
684
685int shmob_drm_connector_create(struct shmob_drm_device *sdev,
686 struct drm_encoder *encoder)
687{
688 struct drm_connector *connector = &sdev->connector.connector;
689 int ret;
690
691 sdev->connector.encoder = encoder;
692
693 connector->display_info.width_mm = sdev->pdata->panel.width_mm;
694 connector->display_info.height_mm = sdev->pdata->panel.height_mm;
695
696 ret = drm_connector_init(sdev->ddev, connector, &connector_funcs,
697 DRM_MODE_CONNECTOR_LVDS);
698 if (ret < 0)
699 return ret;
700
701 drm_connector_helper_add(connector, &connector_helper_funcs);
702 ret = drm_connector_register(connector);
703 if (ret < 0)
704 goto err_cleanup;
705
706 ret = shmob_drm_backlight_init(&sdev->connector);
707 if (ret < 0)
708 goto err_sysfs;
709
710 ret = drm_mode_connector_attach_encoder(connector, encoder);
711 if (ret < 0)
712 goto err_backlight;
713
714 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
715 drm_object_property_set_value(&connector->base,
716 sdev->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
717
718 return 0;
719
720err_backlight:
721 shmob_drm_backlight_exit(&sdev->connector);
722err_sysfs:
723 drm_connector_unregister(connector);
724err_cleanup:
725 drm_connector_cleanup(connector);
726 return ret;
727}
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * shmob_drm_crtc.c -- SH Mobile DRM CRTCs
4 *
5 * Copyright (C) 2012 Renesas Electronics Corporation
6 *
7 * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
8 */
9
10#include <linux/backlight.h>
11#include <linux/clk.h>
12
13#include <drm/drm_crtc.h>
14#include <drm/drm_crtc_helper.h>
15#include <drm/drm_fb_dma_helper.h>
16#include <drm/drm_fourcc.h>
17#include <drm/drm_framebuffer.h>
18#include <drm/drm_gem_dma_helper.h>
19#include <drm/drm_probe_helper.h>
20#include <drm/drm_simple_kms_helper.h>
21#include <drm/drm_vblank.h>
22
23#include "shmob_drm_backlight.h"
24#include "shmob_drm_crtc.h"
25#include "shmob_drm_drv.h"
26#include "shmob_drm_kms.h"
27#include "shmob_drm_plane.h"
28#include "shmob_drm_regs.h"
29
30/*
31 * TODO: panel support
32 */
33
34/* -----------------------------------------------------------------------------
35 * Clock management
36 */
37
38static int shmob_drm_clk_on(struct shmob_drm_device *sdev)
39{
40 int ret;
41
42 if (sdev->clock) {
43 ret = clk_prepare_enable(sdev->clock);
44 if (ret < 0)
45 return ret;
46 }
47
48 return 0;
49}
50
51static void shmob_drm_clk_off(struct shmob_drm_device *sdev)
52{
53 if (sdev->clock)
54 clk_disable_unprepare(sdev->clock);
55}
56
57/* -----------------------------------------------------------------------------
58 * CRTC
59 */
60
61static void shmob_drm_crtc_setup_geometry(struct shmob_drm_crtc *scrtc)
62{
63 struct drm_crtc *crtc = &scrtc->crtc;
64 struct shmob_drm_device *sdev = crtc->dev->dev_private;
65 const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
66 const struct drm_display_mode *mode = &crtc->mode;
67 u32 value;
68
69 value = sdev->ldmt1r
70 | ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : LDMT1R_VPOL)
71 | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : LDMT1R_HPOL)
72 | ((idata->flags & SHMOB_DRM_IFACE_FL_DWPOL) ? LDMT1R_DWPOL : 0)
73 | ((idata->flags & SHMOB_DRM_IFACE_FL_DIPOL) ? LDMT1R_DIPOL : 0)
74 | ((idata->flags & SHMOB_DRM_IFACE_FL_DAPOL) ? LDMT1R_DAPOL : 0)
75 | ((idata->flags & SHMOB_DRM_IFACE_FL_HSCNT) ? LDMT1R_HSCNT : 0)
76 | ((idata->flags & SHMOB_DRM_IFACE_FL_DWCNT) ? LDMT1R_DWCNT : 0);
77 lcdc_write(sdev, LDMT1R, value);
78
79 if (idata->interface >= SHMOB_DRM_IFACE_SYS8A &&
80 idata->interface <= SHMOB_DRM_IFACE_SYS24) {
81 /* Setup SYS bus. */
82 value = (idata->sys.cs_setup << LDMT2R_CSUP_SHIFT)
83 | (idata->sys.vsync_active_high ? LDMT2R_RSV : 0)
84 | (idata->sys.vsync_dir_input ? LDMT2R_VSEL : 0)
85 | (idata->sys.write_setup << LDMT2R_WCSC_SHIFT)
86 | (idata->sys.write_cycle << LDMT2R_WCEC_SHIFT)
87 | (idata->sys.write_strobe << LDMT2R_WCLW_SHIFT);
88 lcdc_write(sdev, LDMT2R, value);
89
90 value = (idata->sys.read_latch << LDMT3R_RDLC_SHIFT)
91 | (idata->sys.read_setup << LDMT3R_RCSC_SHIFT)
92 | (idata->sys.read_cycle << LDMT3R_RCEC_SHIFT)
93 | (idata->sys.read_strobe << LDMT3R_RCLW_SHIFT);
94 lcdc_write(sdev, LDMT3R, value);
95 }
96
97 value = ((mode->hdisplay / 8) << 16) /* HDCN */
98 | (mode->htotal / 8); /* HTCN */
99 lcdc_write(sdev, LDHCNR, value);
100
101 value = (((mode->hsync_end - mode->hsync_start) / 8) << 16) /* HSYNW */
102 | (mode->hsync_start / 8); /* HSYNP */
103 lcdc_write(sdev, LDHSYNR, value);
104
105 value = ((mode->hdisplay & 7) << 24) | ((mode->htotal & 7) << 16)
106 | (((mode->hsync_end - mode->hsync_start) & 7) << 8)
107 | (mode->hsync_start & 7);
108 lcdc_write(sdev, LDHAJR, value);
109
110 value = ((mode->vdisplay) << 16) /* VDLN */
111 | mode->vtotal; /* VTLN */
112 lcdc_write(sdev, LDVLNR, value);
113
114 value = ((mode->vsync_end - mode->vsync_start) << 16) /* VSYNW */
115 | mode->vsync_start; /* VSYNP */
116 lcdc_write(sdev, LDVSYNR, value);
117}
118
119static void shmob_drm_crtc_start_stop(struct shmob_drm_crtc *scrtc, bool start)
120{
121 struct shmob_drm_device *sdev = scrtc->crtc.dev->dev_private;
122 u32 value;
123
124 value = lcdc_read(sdev, LDCNT2R);
125 if (start)
126 lcdc_write(sdev, LDCNT2R, value | LDCNT2R_DO);
127 else
128 lcdc_write(sdev, LDCNT2R, value & ~LDCNT2R_DO);
129
130 /* Wait until power is applied/stopped. */
131 while (1) {
132 value = lcdc_read(sdev, LDPMR) & LDPMR_LPS;
133 if ((start && value) || (!start && !value))
134 break;
135
136 cpu_relax();
137 }
138
139 if (!start) {
140 /* Stop the dot clock. */
141 lcdc_write(sdev, LDDCKSTPR, LDDCKSTPR_DCKSTP);
142 }
143}
144
145/*
146 * shmob_drm_crtc_start - Configure and start the LCDC
147 * @scrtc: the SH Mobile CRTC
148 *
149 * Configure and start the LCDC device. External devices (clocks, MERAM, panels,
150 * ...) are not touched by this function.
151 */
152static void shmob_drm_crtc_start(struct shmob_drm_crtc *scrtc)
153{
154 struct drm_crtc *crtc = &scrtc->crtc;
155 struct shmob_drm_device *sdev = crtc->dev->dev_private;
156 const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
157 const struct shmob_drm_format_info *format;
158 struct drm_device *dev = sdev->ddev;
159 struct drm_plane *plane;
160 u32 value;
161 int ret;
162
163 if (scrtc->started)
164 return;
165
166 format = shmob_drm_format_info(crtc->primary->fb->format->format);
167 if (WARN_ON(format == NULL))
168 return;
169
170 /* Enable clocks before accessing the hardware. */
171 ret = shmob_drm_clk_on(sdev);
172 if (ret < 0)
173 return;
174
175 /* Reset and enable the LCDC. */
176 lcdc_write(sdev, LDCNT2R, lcdc_read(sdev, LDCNT2R) | LDCNT2R_BR);
177 lcdc_wait_bit(sdev, LDCNT2R, LDCNT2R_BR, 0);
178 lcdc_write(sdev, LDCNT2R, LDCNT2R_ME);
179
180 /* Stop the LCDC first and disable all interrupts. */
181 shmob_drm_crtc_start_stop(scrtc, false);
182 lcdc_write(sdev, LDINTR, 0);
183
184 /* Configure power supply, dot clocks and start them. */
185 lcdc_write(sdev, LDPMR, 0);
186
187 value = sdev->lddckr;
188 if (idata->clk_div) {
189 /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider
190 * denominator.
191 */
192 lcdc_write(sdev, LDDCKPAT1R, 0);
193 lcdc_write(sdev, LDDCKPAT2R, (1 << (idata->clk_div / 2)) - 1);
194
195 if (idata->clk_div == 1)
196 value |= LDDCKR_MOSEL;
197 else
198 value |= idata->clk_div;
199 }
200
201 lcdc_write(sdev, LDDCKR, value);
202 lcdc_write(sdev, LDDCKSTPR, 0);
203 lcdc_wait_bit(sdev, LDDCKSTPR, ~0, 0);
204
205 /* TODO: Setup SYS panel */
206
207 /* Setup geometry, format, frame buffer memory and operation mode. */
208 shmob_drm_crtc_setup_geometry(scrtc);
209
210 /* TODO: Handle YUV colorspaces. Hardcode REC709 for now. */
211 lcdc_write(sdev, LDDFR, format->lddfr | LDDFR_CF1);
212 lcdc_write(sdev, LDMLSR, scrtc->line_size);
213 lcdc_write(sdev, LDSA1R, scrtc->dma[0]);
214 if (format->yuv)
215 lcdc_write(sdev, LDSA2R, scrtc->dma[1]);
216 lcdc_write(sdev, LDSM1R, 0);
217
218 /* Word and long word swap. */
219 switch (format->fourcc) {
220 case DRM_FORMAT_RGB565:
221 case DRM_FORMAT_NV21:
222 case DRM_FORMAT_NV61:
223 case DRM_FORMAT_NV42:
224 value = LDDDSR_LS | LDDDSR_WS;
225 break;
226 case DRM_FORMAT_RGB888:
227 case DRM_FORMAT_NV12:
228 case DRM_FORMAT_NV16:
229 case DRM_FORMAT_NV24:
230 value = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS;
231 break;
232 case DRM_FORMAT_ARGB8888:
233 default:
234 value = LDDDSR_LS;
235 break;
236 }
237 lcdc_write(sdev, LDDDSR, value);
238
239 /* Setup planes. */
240 drm_for_each_legacy_plane(plane, dev) {
241 if (plane->crtc == crtc)
242 shmob_drm_plane_setup(plane);
243 }
244
245 /* Enable the display output. */
246 lcdc_write(sdev, LDCNT1R, LDCNT1R_DE);
247
248 shmob_drm_crtc_start_stop(scrtc, true);
249
250 scrtc->started = true;
251}
252
253static void shmob_drm_crtc_stop(struct shmob_drm_crtc *scrtc)
254{
255 struct drm_crtc *crtc = &scrtc->crtc;
256 struct shmob_drm_device *sdev = crtc->dev->dev_private;
257
258 if (!scrtc->started)
259 return;
260
261 /* Stop the LCDC. */
262 shmob_drm_crtc_start_stop(scrtc, false);
263
264 /* Disable the display output. */
265 lcdc_write(sdev, LDCNT1R, 0);
266
267 /* Stop clocks. */
268 shmob_drm_clk_off(sdev);
269
270 scrtc->started = false;
271}
272
273void shmob_drm_crtc_suspend(struct shmob_drm_crtc *scrtc)
274{
275 shmob_drm_crtc_stop(scrtc);
276}
277
278void shmob_drm_crtc_resume(struct shmob_drm_crtc *scrtc)
279{
280 if (scrtc->dpms != DRM_MODE_DPMS_ON)
281 return;
282
283 shmob_drm_crtc_start(scrtc);
284}
285
286static void shmob_drm_crtc_compute_base(struct shmob_drm_crtc *scrtc,
287 int x, int y)
288{
289 struct drm_crtc *crtc = &scrtc->crtc;
290 struct drm_framebuffer *fb = crtc->primary->fb;
291 struct drm_gem_dma_object *gem;
292 unsigned int bpp;
293
294 bpp = scrtc->format->yuv ? 8 : scrtc->format->bpp;
295 gem = drm_fb_dma_get_gem_obj(fb, 0);
296 scrtc->dma[0] = gem->dma_addr + fb->offsets[0]
297 + y * fb->pitches[0] + x * bpp / 8;
298
299 if (scrtc->format->yuv) {
300 bpp = scrtc->format->bpp - 8;
301 gem = drm_fb_dma_get_gem_obj(fb, 1);
302 scrtc->dma[1] = gem->dma_addr + fb->offsets[1]
303 + y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
304 + x * (bpp == 16 ? 2 : 1);
305 }
306}
307
308static void shmob_drm_crtc_update_base(struct shmob_drm_crtc *scrtc)
309{
310 struct drm_crtc *crtc = &scrtc->crtc;
311 struct shmob_drm_device *sdev = crtc->dev->dev_private;
312
313 shmob_drm_crtc_compute_base(scrtc, crtc->x, crtc->y);
314
315 lcdc_write_mirror(sdev, LDSA1R, scrtc->dma[0]);
316 if (scrtc->format->yuv)
317 lcdc_write_mirror(sdev, LDSA2R, scrtc->dma[1]);
318
319 lcdc_write(sdev, LDRCNTR, lcdc_read(sdev, LDRCNTR) ^ LDRCNTR_MRS);
320}
321
322#define to_shmob_crtc(c) container_of(c, struct shmob_drm_crtc, crtc)
323
324static void shmob_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
325{
326 struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
327
328 if (scrtc->dpms == mode)
329 return;
330
331 if (mode == DRM_MODE_DPMS_ON)
332 shmob_drm_crtc_start(scrtc);
333 else
334 shmob_drm_crtc_stop(scrtc);
335
336 scrtc->dpms = mode;
337}
338
339static void shmob_drm_crtc_mode_prepare(struct drm_crtc *crtc)
340{
341 shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
342}
343
344static int shmob_drm_crtc_mode_set(struct drm_crtc *crtc,
345 struct drm_display_mode *mode,
346 struct drm_display_mode *adjusted_mode,
347 int x, int y,
348 struct drm_framebuffer *old_fb)
349{
350 struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
351 struct shmob_drm_device *sdev = crtc->dev->dev_private;
352 const struct shmob_drm_format_info *format;
353
354 format = shmob_drm_format_info(crtc->primary->fb->format->format);
355 if (format == NULL) {
356 dev_dbg(sdev->dev, "mode_set: unsupported format %08x\n",
357 crtc->primary->fb->format->format);
358 return -EINVAL;
359 }
360
361 scrtc->format = format;
362 scrtc->line_size = crtc->primary->fb->pitches[0];
363
364 shmob_drm_crtc_compute_base(scrtc, x, y);
365
366 return 0;
367}
368
369static void shmob_drm_crtc_mode_commit(struct drm_crtc *crtc)
370{
371 shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
372}
373
374static int shmob_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
375 struct drm_framebuffer *old_fb)
376{
377 shmob_drm_crtc_update_base(to_shmob_crtc(crtc));
378
379 return 0;
380}
381
382static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
383 .dpms = shmob_drm_crtc_dpms,
384 .prepare = shmob_drm_crtc_mode_prepare,
385 .commit = shmob_drm_crtc_mode_commit,
386 .mode_set = shmob_drm_crtc_mode_set,
387 .mode_set_base = shmob_drm_crtc_mode_set_base,
388};
389
390void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc)
391{
392 struct drm_pending_vblank_event *event;
393 struct drm_device *dev = scrtc->crtc.dev;
394 unsigned long flags;
395
396 spin_lock_irqsave(&dev->event_lock, flags);
397 event = scrtc->event;
398 scrtc->event = NULL;
399 if (event) {
400 drm_crtc_send_vblank_event(&scrtc->crtc, event);
401 drm_crtc_vblank_put(&scrtc->crtc);
402 }
403 spin_unlock_irqrestore(&dev->event_lock, flags);
404}
405
406static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc,
407 struct drm_framebuffer *fb,
408 struct drm_pending_vblank_event *event,
409 uint32_t page_flip_flags,
410 struct drm_modeset_acquire_ctx *ctx)
411{
412 struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
413 struct drm_device *dev = scrtc->crtc.dev;
414 unsigned long flags;
415
416 spin_lock_irqsave(&dev->event_lock, flags);
417 if (scrtc->event != NULL) {
418 spin_unlock_irqrestore(&dev->event_lock, flags);
419 return -EBUSY;
420 }
421 spin_unlock_irqrestore(&dev->event_lock, flags);
422
423 crtc->primary->fb = fb;
424 shmob_drm_crtc_update_base(scrtc);
425
426 if (event) {
427 event->pipe = 0;
428 drm_crtc_vblank_get(&scrtc->crtc);
429 spin_lock_irqsave(&dev->event_lock, flags);
430 scrtc->event = event;
431 spin_unlock_irqrestore(&dev->event_lock, flags);
432 }
433
434 return 0;
435}
436
437static void shmob_drm_crtc_enable_vblank(struct shmob_drm_device *sdev,
438 bool enable)
439{
440 unsigned long flags;
441 u32 ldintr;
442
443 /* Be careful not to acknowledge any pending interrupt. */
444 spin_lock_irqsave(&sdev->irq_lock, flags);
445 ldintr = lcdc_read(sdev, LDINTR) | LDINTR_STATUS_MASK;
446 if (enable)
447 ldintr |= LDINTR_VEE;
448 else
449 ldintr &= ~LDINTR_VEE;
450 lcdc_write(sdev, LDINTR, ldintr);
451 spin_unlock_irqrestore(&sdev->irq_lock, flags);
452}
453
454static int shmob_drm_enable_vblank(struct drm_crtc *crtc)
455{
456 struct shmob_drm_device *sdev = crtc->dev->dev_private;
457
458 shmob_drm_crtc_enable_vblank(sdev, true);
459
460 return 0;
461}
462
463static void shmob_drm_disable_vblank(struct drm_crtc *crtc)
464{
465 struct shmob_drm_device *sdev = crtc->dev->dev_private;
466
467 shmob_drm_crtc_enable_vblank(sdev, false);
468}
469
470static const struct drm_crtc_funcs crtc_funcs = {
471 .destroy = drm_crtc_cleanup,
472 .set_config = drm_crtc_helper_set_config,
473 .page_flip = shmob_drm_crtc_page_flip,
474 .enable_vblank = shmob_drm_enable_vblank,
475 .disable_vblank = shmob_drm_disable_vblank,
476};
477
478int shmob_drm_crtc_create(struct shmob_drm_device *sdev)
479{
480 struct drm_crtc *crtc = &sdev->crtc.crtc;
481 int ret;
482
483 sdev->crtc.dpms = DRM_MODE_DPMS_OFF;
484
485 ret = drm_crtc_init(sdev->ddev, crtc, &crtc_funcs);
486 if (ret < 0)
487 return ret;
488
489 drm_crtc_helper_add(crtc, &crtc_helper_funcs);
490
491 return 0;
492}
493
494/* -----------------------------------------------------------------------------
495 * Encoder
496 */
497
498#define to_shmob_encoder(e) \
499 container_of(e, struct shmob_drm_encoder, encoder)
500
501static void shmob_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
502{
503 struct shmob_drm_encoder *senc = to_shmob_encoder(encoder);
504 struct shmob_drm_device *sdev = encoder->dev->dev_private;
505 struct shmob_drm_connector *scon = &sdev->connector;
506
507 if (senc->dpms == mode)
508 return;
509
510 shmob_drm_backlight_dpms(scon, mode);
511
512 senc->dpms = mode;
513}
514
515static bool shmob_drm_encoder_mode_fixup(struct drm_encoder *encoder,
516 const struct drm_display_mode *mode,
517 struct drm_display_mode *adjusted_mode)
518{
519 struct drm_device *dev = encoder->dev;
520 struct shmob_drm_device *sdev = dev->dev_private;
521 struct drm_connector *connector = &sdev->connector.connector;
522 const struct drm_display_mode *panel_mode;
523
524 if (list_empty(&connector->modes)) {
525 dev_dbg(dev->dev, "mode_fixup: empty modes list\n");
526 return false;
527 }
528
529 /* The flat panel mode is fixed, just copy it to the adjusted mode. */
530 panel_mode = list_first_entry(&connector->modes,
531 struct drm_display_mode, head);
532 drm_mode_copy(adjusted_mode, panel_mode);
533
534 return true;
535}
536
537static void shmob_drm_encoder_mode_prepare(struct drm_encoder *encoder)
538{
539 /* No-op, everything is handled in the CRTC code. */
540}
541
542static void shmob_drm_encoder_mode_set(struct drm_encoder *encoder,
543 struct drm_display_mode *mode,
544 struct drm_display_mode *adjusted_mode)
545{
546 /* No-op, everything is handled in the CRTC code. */
547}
548
549static void shmob_drm_encoder_mode_commit(struct drm_encoder *encoder)
550{
551 /* No-op, everything is handled in the CRTC code. */
552}
553
554static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
555 .dpms = shmob_drm_encoder_dpms,
556 .mode_fixup = shmob_drm_encoder_mode_fixup,
557 .prepare = shmob_drm_encoder_mode_prepare,
558 .commit = shmob_drm_encoder_mode_commit,
559 .mode_set = shmob_drm_encoder_mode_set,
560};
561
562int shmob_drm_encoder_create(struct shmob_drm_device *sdev)
563{
564 struct drm_encoder *encoder = &sdev->encoder.encoder;
565 int ret;
566
567 sdev->encoder.dpms = DRM_MODE_DPMS_OFF;
568
569 encoder->possible_crtcs = 1;
570
571 ret = drm_simple_encoder_init(sdev->ddev, encoder,
572 DRM_MODE_ENCODER_LVDS);
573 if (ret < 0)
574 return ret;
575
576 drm_encoder_helper_add(encoder, &encoder_helper_funcs);
577
578 return 0;
579}
580
581/* -----------------------------------------------------------------------------
582 * Connector
583 */
584
585#define to_shmob_connector(c) \
586 container_of(c, struct shmob_drm_connector, connector)
587
588static int shmob_drm_connector_get_modes(struct drm_connector *connector)
589{
590 struct shmob_drm_device *sdev = connector->dev->dev_private;
591 struct drm_display_mode *mode;
592
593 mode = drm_mode_create(connector->dev);
594 if (mode == NULL)
595 return 0;
596
597 mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
598 mode->clock = sdev->pdata->panel.mode.clock;
599 mode->hdisplay = sdev->pdata->panel.mode.hdisplay;
600 mode->hsync_start = sdev->pdata->panel.mode.hsync_start;
601 mode->hsync_end = sdev->pdata->panel.mode.hsync_end;
602 mode->htotal = sdev->pdata->panel.mode.htotal;
603 mode->vdisplay = sdev->pdata->panel.mode.vdisplay;
604 mode->vsync_start = sdev->pdata->panel.mode.vsync_start;
605 mode->vsync_end = sdev->pdata->panel.mode.vsync_end;
606 mode->vtotal = sdev->pdata->panel.mode.vtotal;
607 mode->flags = sdev->pdata->panel.mode.flags;
608
609 drm_mode_set_name(mode);
610 drm_mode_probed_add(connector, mode);
611
612 connector->display_info.width_mm = sdev->pdata->panel.width_mm;
613 connector->display_info.height_mm = sdev->pdata->panel.height_mm;
614
615 return 1;
616}
617
618static struct drm_encoder *
619shmob_drm_connector_best_encoder(struct drm_connector *connector)
620{
621 struct shmob_drm_connector *scon = to_shmob_connector(connector);
622
623 return scon->encoder;
624}
625
626static const struct drm_connector_helper_funcs connector_helper_funcs = {
627 .get_modes = shmob_drm_connector_get_modes,
628 .best_encoder = shmob_drm_connector_best_encoder,
629};
630
631static void shmob_drm_connector_destroy(struct drm_connector *connector)
632{
633 struct shmob_drm_connector *scon = to_shmob_connector(connector);
634
635 shmob_drm_backlight_exit(scon);
636 drm_connector_unregister(connector);
637 drm_connector_cleanup(connector);
638}
639
640static const struct drm_connector_funcs connector_funcs = {
641 .dpms = drm_helper_connector_dpms,
642 .fill_modes = drm_helper_probe_single_connector_modes,
643 .destroy = shmob_drm_connector_destroy,
644};
645
646int shmob_drm_connector_create(struct shmob_drm_device *sdev,
647 struct drm_encoder *encoder)
648{
649 struct drm_connector *connector = &sdev->connector.connector;
650 int ret;
651
652 sdev->connector.encoder = encoder;
653
654 connector->display_info.width_mm = sdev->pdata->panel.width_mm;
655 connector->display_info.height_mm = sdev->pdata->panel.height_mm;
656
657 ret = drm_connector_init(sdev->ddev, connector, &connector_funcs,
658 DRM_MODE_CONNECTOR_LVDS);
659 if (ret < 0)
660 return ret;
661
662 drm_connector_helper_add(connector, &connector_helper_funcs);
663
664 ret = shmob_drm_backlight_init(&sdev->connector);
665 if (ret < 0)
666 goto err_cleanup;
667
668 ret = drm_connector_attach_encoder(connector, encoder);
669 if (ret < 0)
670 goto err_backlight;
671
672 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
673 drm_object_property_set_value(&connector->base,
674 sdev->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
675
676 return 0;
677
678err_backlight:
679 shmob_drm_backlight_exit(&sdev->connector);
680err_cleanup:
681 drm_connector_cleanup(connector);
682 return ret;
683}