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Merge tag 'mfd-for-linus-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
[deliverable/linux.git] / drivers / gpu / drm / shmobile / shmob_drm_crtc.c
CommitLineData
51c13278
LP		 1/*
2 * shmob_drm_crtc.c -- SH Mobile DRM CRTCs
3 *
9588b826 4 * Copyright (C) 2012 Renesas Electronics Corporation
51c13278
LP		 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
23#include <video/sh_mobile_meram.h>
24
25#include "shmob_drm_backlight.h"
26#include "shmob_drm_crtc.h"
27#include "shmob_drm_drv.h"
28#include "shmob_drm_kms.h"
29#include "shmob_drm_plane.h"
30#include "shmob_drm_regs.h"
31
32/*
33 * TODO: panel support
34 */
35
36/* -----------------------------------------------------------------------------
37 * Clock management
38 */
39
c0c72a85 40static int shmob_drm_clk_on(struct shmob_drm_device *sdev)
51c13278 41{
c0c72a85
LP		 42 int ret;
43
44 if (sdev->clock) {
45 ret = clk_prepare_enable(sdev->clock);
46 if (ret < 0)
47 return ret;
48 }
51c13278
LP		 49#if 0
50 if (sdev->meram_dev && sdev->meram_dev->pdev)
51 pm_runtime_get_sync(&sdev->meram_dev->pdev->dev);
52#endif
c0c72a85
LP		 53
54 return 0;
51c13278
LP		 55}
56
57static void shmob_drm_clk_off(struct shmob_drm_device *sdev)
58{
59#if 0
60 if (sdev->meram_dev && sdev->meram_dev->pdev)
61 pm_runtime_put_sync(&sdev->meram_dev->pdev->dev);
62#endif
63 if (sdev->clock)
8d01e1ef 64 clk_disable_unprepare(sdev->clock);
51c13278
LP		 65}
66
67/* -----------------------------------------------------------------------------
68 * CRTC
69 */
70
71static void shmob_drm_crtc_setup_geometry(struct shmob_drm_crtc *scrtc)
72{
73 struct drm_crtc *crtc = &scrtc->crtc;
74 struct shmob_drm_device *sdev = crtc->dev->dev_private;
75 const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
76 const struct drm_display_mode *mode = &crtc->mode;
77 u32 value;
78
79 value = sdev->ldmt1r
80 | ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : LDMT1R_VPOL)
81 | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : LDMT1R_HPOL)
82 | ((idata->flags & SHMOB_DRM_IFACE_FL_DWPOL) ? LDMT1R_DWPOL : 0)
83 | ((idata->flags & SHMOB_DRM_IFACE_FL_DIPOL) ? LDMT1R_DIPOL : 0)
84 | ((idata->flags & SHMOB_DRM_IFACE_FL_DAPOL) ? LDMT1R_DAPOL : 0)
85 | ((idata->flags & SHMOB_DRM_IFACE_FL_HSCNT) ? LDMT1R_HSCNT : 0)
86 | ((idata->flags & SHMOB_DRM_IFACE_FL_DWCNT) ? LDMT1R_DWCNT : 0);
87 lcdc_write(sdev, LDMT1R, value);
88
89 if (idata->interface >= SHMOB_DRM_IFACE_SYS8A &&
90 idata->interface <= SHMOB_DRM_IFACE_SYS24) {
91 /* Setup SYS bus. */
92 value = (idata->sys.cs_setup << LDMT2R_CSUP_SHIFT)
93 | (idata->sys.vsync_active_high ? LDMT2R_RSV : 0)
94 | (idata->sys.vsync_dir_input ? LDMT2R_VSEL : 0)
95 | (idata->sys.write_setup << LDMT2R_WCSC_SHIFT)
96 | (idata->sys.write_cycle << LDMT2R_WCEC_SHIFT)
97 | (idata->sys.write_strobe << LDMT2R_WCLW_SHIFT);
98 lcdc_write(sdev, LDMT2R, value);
99
100 value = (idata->sys.read_latch << LDMT3R_RDLC_SHIFT)
101 | (idata->sys.read_setup << LDMT3R_RCSC_SHIFT)
102 | (idata->sys.read_cycle << LDMT3R_RCEC_SHIFT)
103 | (idata->sys.read_strobe << LDMT3R_RCLW_SHIFT);
104 lcdc_write(sdev, LDMT3R, value);
105 }
106
107 value = ((mode->hdisplay / 8) << 16) /* HDCN */
108 | (mode->htotal / 8); /* HTCN */
109 lcdc_write(sdev, LDHCNR, value);
110
111 value = (((mode->hsync_end - mode->hsync_start) / 8) << 16) /* HSYNW */
112 | (mode->hsync_start / 8); /* HSYNP */
113 lcdc_write(sdev, LDHSYNR, value);
114
115 value = ((mode->hdisplay & 7) << 24) | ((mode->htotal & 7) << 16)
116 | (((mode->hsync_end - mode->hsync_start) & 7) << 8)
117 | (mode->hsync_start & 7);
118 lcdc_write(sdev, LDHAJR, value);
119
120 value = ((mode->vdisplay) << 16) /* VDLN */
121 | mode->vtotal; /* VTLN */
122 lcdc_write(sdev, LDVLNR, value);
123
124 value = ((mode->vsync_end - mode->vsync_start) << 16) /* VSYNW */
125 | mode->vsync_start; /* VSYNP */
126 lcdc_write(sdev, LDVSYNR, value);
127}
128
129static void shmob_drm_crtc_start_stop(struct shmob_drm_crtc *scrtc, bool start)
130{
131 struct shmob_drm_device *sdev = scrtc->crtc.dev->dev_private;
132 u32 value;
133
134 value = lcdc_read(sdev, LDCNT2R);
135 if (start)
136 lcdc_write(sdev, LDCNT2R, value | LDCNT2R_DO);
137 else
138 lcdc_write(sdev, LDCNT2R, value & ~LDCNT2R_DO);
139
140 /* Wait until power is applied/stopped. */
141 while (1) {
142 value = lcdc_read(sdev, LDPMR) & LDPMR_LPS;
143 if ((start && value) || (!start && !value))
144 break;
145
146 cpu_relax();
147 }
148
149 if (!start) {
150 /* Stop the dot clock. */
151 lcdc_write(sdev, LDDCKSTPR, LDDCKSTPR_DCKSTP);
152 }
153}
154
155/*
156 * shmob_drm_crtc_start - Configure and start the LCDC
157 * @scrtc: the SH Mobile CRTC
158 *
159 * Configure and start the LCDC device. External devices (clocks, MERAM, panels,
160 * ...) are not touched by this function.
161 */
162static void shmob_drm_crtc_start(struct shmob_drm_crtc *scrtc)
163{
164 struct drm_crtc *crtc = &scrtc->crtc;
165 struct shmob_drm_device *sdev = crtc->dev->dev_private;
166 const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
167 const struct shmob_drm_format_info *format;
168 struct drm_device *dev = sdev->ddev;
169 struct drm_plane *plane;
170 u32 value;
c0c72a85 171 int ret;
51c13278
LP		 172
173 if (scrtc->started)
174 return;
175
f4510a27 176 format = shmob_drm_format_info(crtc->primary->fb->pixel_format);
51c13278
LP		 177 if (WARN_ON(format == NULL))
178 return;
179
180 /* Enable clocks before accessing the hardware. */
c0c72a85
LP		 181 ret = shmob_drm_clk_on(sdev);
182 if (ret < 0)
183 return;
51c13278
LP		 184
185 /* Reset and enable the LCDC. */
186 lcdc_write(sdev, LDCNT2R, lcdc_read(sdev, LDCNT2R) | LDCNT2R_BR);
187 lcdc_wait_bit(sdev, LDCNT2R, LDCNT2R_BR, 0);
188 lcdc_write(sdev, LDCNT2R, LDCNT2R_ME);
189
190 /* Stop the LCDC first and disable all interrupts. */
191 shmob_drm_crtc_start_stop(scrtc, false);
192 lcdc_write(sdev, LDINTR, 0);
193
194 /* Configure power supply, dot clocks and start them. */
195 lcdc_write(sdev, LDPMR, 0);
196
197 value = sdev->lddckr;
198 if (idata->clk_div) {
199 /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider
200 * denominator.
201 */
202 lcdc_write(sdev, LDDCKPAT1R, 0);
203 lcdc_write(sdev, LDDCKPAT2R, (1 << (idata->clk_div / 2)) - 1);
204
205 if (idata->clk_div == 1)
206 value |= LDDCKR_MOSEL;
207 else
208 value |= idata->clk_div;
209 }
210
211 lcdc_write(sdev, LDDCKR, value);
212 lcdc_write(sdev, LDDCKSTPR, 0);
213 lcdc_wait_bit(sdev, LDDCKSTPR, ~0, 0);
214
215 /* TODO: Setup SYS panel */
216
217 /* Setup geometry, format, frame buffer memory and operation mode. */
218 shmob_drm_crtc_setup_geometry(scrtc);
219
220 /* TODO: Handle YUV colorspaces. Hardcode REC709 for now. */
221 lcdc_write(sdev, LDDFR, format->lddfr | LDDFR_CF1);
222 lcdc_write(sdev, LDMLSR, scrtc->line_size);
223 lcdc_write(sdev, LDSA1R, scrtc->dma[0]);
224 if (format->yuv)
225 lcdc_write(sdev, LDSA2R, scrtc->dma[1]);
226 lcdc_write(sdev, LDSM1R, 0);
227
228 /* Word and long word swap. */
229 switch (format->fourcc) {
230 case DRM_FORMAT_RGB565:
231 case DRM_FORMAT_NV21:
232 case DRM_FORMAT_NV61:
233 case DRM_FORMAT_NV42:
234 value = LDDDSR_LS | LDDDSR_WS;
235 break;
236 case DRM_FORMAT_RGB888:
237 case DRM_FORMAT_NV12:
238 case DRM_FORMAT_NV16:
239 case DRM_FORMAT_NV24:
240 value = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS;
241 break;
242 case DRM_FORMAT_ARGB8888:
243 default:
244 value = LDDDSR_LS;
245 break;
246 }
247 lcdc_write(sdev, LDDDSR, value);
248
249 /* Setup planes. */
2b79dc13 250 drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) {
51c13278
LP		 251 if (plane->crtc == crtc)
252 shmob_drm_plane_setup(plane);
253 }
254
255 /* Enable the display output. */
256 lcdc_write(sdev, LDCNT1R, LDCNT1R_DE);
257
258 shmob_drm_crtc_start_stop(scrtc, true);
259
260 scrtc->started = true;
261}
262
263static void shmob_drm_crtc_stop(struct shmob_drm_crtc *scrtc)
264{
265 struct drm_crtc *crtc = &scrtc->crtc;
266 struct shmob_drm_device *sdev = crtc->dev->dev_private;
267
268 if (!scrtc->started)
269 return;
270
271 /* Disable the MERAM cache. */
272 if (scrtc->cache) {
273 sh_mobile_meram_cache_free(sdev->meram, scrtc->cache);
274 scrtc->cache = NULL;
275 }
276
277 /* Stop the LCDC. */
278 shmob_drm_crtc_start_stop(scrtc, false);
279
280 /* Disable the display output. */
281 lcdc_write(sdev, LDCNT1R, 0);
282
283 /* Stop clocks. */
284 shmob_drm_clk_off(sdev);
285
286 scrtc->started = false;
287}
288
289void shmob_drm_crtc_suspend(struct shmob_drm_crtc *scrtc)
290{
291 shmob_drm_crtc_stop(scrtc);
292}
293
294void shmob_drm_crtc_resume(struct shmob_drm_crtc *scrtc)
295{
296 if (scrtc->dpms != DRM_MODE_DPMS_ON)
297 return;
298
299 shmob_drm_crtc_start(scrtc);
300}
301
302static void shmob_drm_crtc_compute_base(struct shmob_drm_crtc *scrtc,
303 int x, int y)
304{
305 struct drm_crtc *crtc = &scrtc->crtc;
f4510a27 306 struct drm_framebuffer *fb = crtc->primary->fb;
51c13278
LP		 307 struct shmob_drm_device *sdev = crtc->dev->dev_private;
308 struct drm_gem_cma_object *gem;
309 unsigned int bpp;
310
311 bpp = scrtc->format->yuv ? 8 : scrtc->format->bpp;
312 gem = drm_fb_cma_get_gem_obj(fb, 0);
313 scrtc->dma[0] = gem->paddr + fb->offsets[0]
314 + y * fb->pitches[0] + x * bpp / 8;
315
316 if (scrtc->format->yuv) {
317 bpp = scrtc->format->bpp - 8;
318 gem = drm_fb_cma_get_gem_obj(fb, 1);
319 scrtc->dma[1] = gem->paddr + fb->offsets[1]
320 + y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
321 + x * (bpp == 16 ? 2 : 1);
322 }
323
324 if (scrtc->cache)
325 sh_mobile_meram_cache_update(sdev->meram, scrtc->cache,
326 scrtc->dma[0], scrtc->dma[1],
327 &scrtc->dma[0], &scrtc->dma[1]);
328}
329
330static void shmob_drm_crtc_update_base(struct shmob_drm_crtc *scrtc)
331{
332 struct drm_crtc *crtc = &scrtc->crtc;
333 struct shmob_drm_device *sdev = crtc->dev->dev_private;
334
335 shmob_drm_crtc_compute_base(scrtc, crtc->x, crtc->y);
336
337 lcdc_write_mirror(sdev, LDSA1R, scrtc->dma[0]);
338 if (scrtc->format->yuv)
339 lcdc_write_mirror(sdev, LDSA2R, scrtc->dma[1]);
340
341 lcdc_write(sdev, LDRCNTR, lcdc_read(sdev, LDRCNTR) ^ LDRCNTR_MRS);
342}
343
344#define to_shmob_crtc(c) container_of(c, struct shmob_drm_crtc, crtc)
345
346static void shmob_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
347{
348 struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
349
350 if (scrtc->dpms == mode)
351 return;
352
353 if (mode == DRM_MODE_DPMS_ON)
354 shmob_drm_crtc_start(scrtc);
355 else
356 shmob_drm_crtc_stop(scrtc);
357
358 scrtc->dpms = mode;
359}
360
361static bool shmob_drm_crtc_mode_fixup(struct drm_crtc *crtc,
362 const struct drm_display_mode *mode,
363 struct drm_display_mode *adjusted_mode)
364{
365 return true;
366}
367
368static void shmob_drm_crtc_mode_prepare(struct drm_crtc *crtc)
369{
370 shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
371}
372
373static int shmob_drm_crtc_mode_set(struct drm_crtc *crtc,
374 struct drm_display_mode *mode,
375 struct drm_display_mode *adjusted_mode,
376 int x, int y,
377 struct drm_framebuffer *old_fb)
378{
379 struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
380 struct shmob_drm_device *sdev = crtc->dev->dev_private;
381 const struct sh_mobile_meram_cfg *mdata = sdev->pdata->meram;
382 const struct shmob_drm_format_info *format;
383 void *cache;
384
f4510a27 385 format = shmob_drm_format_info(crtc->primary->fb->pixel_format);
51c13278
LP		 386 if (format == NULL) {
387 dev_dbg(sdev->dev, "mode_set: unsupported format %08x\n",
f4510a27 388 crtc->primary->fb->pixel_format);
51c13278
LP		 389 return -EINVAL;
390 }
391
392 scrtc->format = format;
f4510a27 393 scrtc->line_size = crtc->primary->fb->pitches[0];
51c13278
LP		 394
395 if (sdev->meram) {
396 /* Enable MERAM cache if configured. We need to de-init
397 * configured ICBs before we can re-initialize them.
398 */
399 if (scrtc->cache) {
400 sh_mobile_meram_cache_free(sdev->meram, scrtc->cache);
401 scrtc->cache = NULL;
402 }
403
404 cache = sh_mobile_meram_cache_alloc(sdev->meram, mdata,
f4510a27 405 crtc->primary->fb->pitches[0],
51c13278
LP		 406 adjusted_mode->vdisplay,
407 format->meram,
408 &scrtc->line_size);
409 if (!IS_ERR(cache))
410 scrtc->cache = cache;
411 }
412
413 shmob_drm_crtc_compute_base(scrtc, x, y);
414
415 return 0;
416}
417
418static void shmob_drm_crtc_mode_commit(struct drm_crtc *crtc)
419{
420 shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
421}
422
423static int shmob_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
424 struct drm_framebuffer *old_fb)
425{
426 shmob_drm_crtc_update_base(to_shmob_crtc(crtc));
427
428 return 0;
429}
430
431static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
432 .dpms = shmob_drm_crtc_dpms,
433 .mode_fixup = shmob_drm_crtc_mode_fixup,
434 .prepare = shmob_drm_crtc_mode_prepare,
435 .commit = shmob_drm_crtc_mode_commit,
436 .mode_set = shmob_drm_crtc_mode_set,
437 .mode_set_base = shmob_drm_crtc_mode_set_base,
438};
439
440void shmob_drm_crtc_cancel_page_flip(struct shmob_drm_crtc *scrtc,
441 struct drm_file *file)
442{
443 struct drm_pending_vblank_event *event;
444 struct drm_device *dev = scrtc->crtc.dev;
445 unsigned long flags;
446
447 /* Destroy the pending vertical blanking event associated with the
448 * pending page flip, if any, and disable vertical blanking interrupts.
449 */
450 spin_lock_irqsave(&dev->event_lock, flags);
451 event = scrtc->event;
452 if (event && event->base.file_priv == file) {
453 scrtc->event = NULL;
454 event->base.destroy(&event->base);
455 drm_vblank_put(dev, 0);
456 }
457 spin_unlock_irqrestore(&dev->event_lock, flags);
458}
459
460void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc)
461{
462 struct drm_pending_vblank_event *event;
463 struct drm_device *dev = scrtc->crtc.dev;
51c13278
LP		 464 unsigned long flags;
465
466 spin_lock_irqsave(&dev->event_lock, flags);
467 event = scrtc->event;
468 scrtc->event = NULL;
f7e96d7e
RC		 469 if (event) {
470 drm_send_vblank_event(dev, 0, event);
471 drm_vblank_put(dev, 0);
472 }
51c13278 473 spin_unlock_irqrestore(&dev->event_lock, flags);
51c13278
LP		 474}
475
476static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc,
477 struct drm_framebuffer *fb,
ed8d1975
KP		 478 struct drm_pending_vblank_event *event,
479 uint32_t page_flip_flags)
51c13278
LP		 480{
481 struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
482 struct drm_device *dev = scrtc->crtc.dev;
483 unsigned long flags;
484
485 spin_lock_irqsave(&dev->event_lock, flags);
486 if (scrtc->event != NULL) {
487 spin_unlock_irqrestore(&dev->event_lock, flags);
488 return -EBUSY;
489 }
490 spin_unlock_irqrestore(&dev->event_lock, flags);
491
f4510a27 492 crtc->primary->fb = fb;
51c13278
LP		 493 shmob_drm_crtc_update_base(scrtc);
494
495 if (event) {
496 event->pipe = 0;
17f0efc4 497 drm_vblank_get(dev, 0);
51c13278
LP		 498 spin_lock_irqsave(&dev->event_lock, flags);
499 scrtc->event = event;
500 spin_unlock_irqrestore(&dev->event_lock, flags);
51c13278
LP		 501 }
502
503 return 0;
504}
505
506static const struct drm_crtc_funcs crtc_funcs = {
507 .destroy = drm_crtc_cleanup,
508 .set_config = drm_crtc_helper_set_config,
509 .page_flip = shmob_drm_crtc_page_flip,
510};
511
512int shmob_drm_crtc_create(struct shmob_drm_device *sdev)
513{
514 struct drm_crtc *crtc = &sdev->crtc.crtc;
515 int ret;
516
517 sdev->crtc.dpms = DRM_MODE_DPMS_OFF;
518
519 ret = drm_crtc_init(sdev->ddev, crtc, &crtc_funcs);
520 if (ret < 0)
521 return ret;
522
523 drm_crtc_helper_add(crtc, &crtc_helper_funcs);
524
525 return 0;
526}
527
528/* -----------------------------------------------------------------------------
529 * Encoder
530 */
531
532#define to_shmob_encoder(e) \
533 container_of(e, struct shmob_drm_encoder, encoder)
534
535static void shmob_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
536{
537 struct shmob_drm_encoder *senc = to_shmob_encoder(encoder);
538 struct shmob_drm_device *sdev = encoder->dev->dev_private;
539 struct shmob_drm_connector *scon = &sdev->connector;
540
541 if (senc->dpms == mode)
542 return;
543
544 shmob_drm_backlight_dpms(scon, mode);
545
546 senc->dpms = mode;
547}
548
549static bool shmob_drm_encoder_mode_fixup(struct drm_encoder *encoder,
550 const struct drm_display_mode *mode,
551 struct drm_display_mode *adjusted_mode)
552{
553 struct drm_device *dev = encoder->dev;
554 struct shmob_drm_device *sdev = dev->dev_private;
555 struct drm_connector *connector = &sdev->connector.connector;
556 const struct drm_display_mode *panel_mode;
557
558 if (list_empty(&connector->modes)) {
559 dev_dbg(dev->dev, "mode_fixup: empty modes list\n");
560 return false;
561 }
562
563 /* The flat panel mode is fixed, just copy it to the adjusted mode. */
564 panel_mode = list_first_entry(&connector->modes,
565 struct drm_display_mode, head);
566 drm_mode_copy(adjusted_mode, panel_mode);
567
568 return true;
569}
570
571static void shmob_drm_encoder_mode_prepare(struct drm_encoder *encoder)
572{
573 /* No-op, everything is handled in the CRTC code. */
574}
575
576static void shmob_drm_encoder_mode_set(struct drm_encoder *encoder,
577 struct drm_display_mode *mode,
578 struct drm_display_mode *adjusted_mode)
579{
580 /* No-op, everything is handled in the CRTC code. */
581}
582
583static void shmob_drm_encoder_mode_commit(struct drm_encoder *encoder)
584{
585 /* No-op, everything is handled in the CRTC code. */
586}
587
588static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
589 .dpms = shmob_drm_encoder_dpms,
590 .mode_fixup = shmob_drm_encoder_mode_fixup,
591 .prepare = shmob_drm_encoder_mode_prepare,
592 .commit = shmob_drm_encoder_mode_commit,
593 .mode_set = shmob_drm_encoder_mode_set,
594};
595
596static void shmob_drm_encoder_destroy(struct drm_encoder *encoder)
597{
598 drm_encoder_cleanup(encoder);
599}
600
601static const struct drm_encoder_funcs encoder_funcs = {
602 .destroy = shmob_drm_encoder_destroy,
603};
604
605int shmob_drm_encoder_create(struct shmob_drm_device *sdev)
606{
607 struct drm_encoder *encoder = &sdev->encoder.encoder;
608 int ret;
609
610 sdev->encoder.dpms = DRM_MODE_DPMS_OFF;
611
612 encoder->possible_crtcs = 1;
613
614 ret = drm_encoder_init(sdev->ddev, encoder, &encoder_funcs,
615 DRM_MODE_ENCODER_LVDS);
616 if (ret < 0)
617 return ret;
618
619 drm_encoder_helper_add(encoder, &encoder_helper_funcs);
620
621 return 0;
622}
623
624void shmob_drm_crtc_enable_vblank(struct shmob_drm_device *sdev, bool enable)
625{
626 unsigned long flags;
627 u32 ldintr;
628
629 /* Be careful not to acknowledge any pending interrupt. */
630 spin_lock_irqsave(&sdev->irq_lock, flags);
631 ldintr = lcdc_read(sdev, LDINTR) | LDINTR_STATUS_MASK;
632 if (enable)
633 ldintr |= LDINTR_VEE;
634 else
635 ldintr &= ~LDINTR_VEE;
636 lcdc_write(sdev, LDINTR, ldintr);
637 spin_unlock_irqrestore(&sdev->irq_lock, flags);
638}
639
640/* -----------------------------------------------------------------------------
641 * Connector
642 */
643
644#define to_shmob_connector(c) \
645 container_of(c, struct shmob_drm_connector, connector)
646
647static int shmob_drm_connector_get_modes(struct drm_connector *connector)
648{
649 struct shmob_drm_device *sdev = connector->dev->dev_private;
650 struct drm_display_mode *mode;
651
652 mode = drm_mode_create(connector->dev);
653 if (mode == NULL)
654 return 0;
655
656 mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
657 mode->clock = sdev->pdata->panel.mode.clock;
658 mode->hdisplay = sdev->pdata->panel.mode.hdisplay;
659 mode->hsync_start = sdev->pdata->panel.mode.hsync_start;
660 mode->hsync_end = sdev->pdata->panel.mode.hsync_end;
661 mode->htotal = sdev->pdata->panel.mode.htotal;
662 mode->vdisplay = sdev->pdata->panel.mode.vdisplay;
663 mode->vsync_start = sdev->pdata->panel.mode.vsync_start;
664 mode->vsync_end = sdev->pdata->panel.mode.vsync_end;
665 mode->vtotal = sdev->pdata->panel.mode.vtotal;
666 mode->flags = sdev->pdata->panel.mode.flags;
667
668 drm_mode_set_name(mode);
669 drm_mode_probed_add(connector, mode);
670
671 connector->display_info.width_mm = sdev->pdata->panel.width_mm;
672 connector->display_info.height_mm = sdev->pdata->panel.height_mm;
673
674 return 1;
675}
676
51c13278
LP		 677static struct drm_encoder *
678shmob_drm_connector_best_encoder(struct drm_connector *connector)
679{
680 struct shmob_drm_connector *scon = to_shmob_connector(connector);
681
682 return scon->encoder;
683}
684
685static const struct drm_connector_helper_funcs connector_helper_funcs = {
686 .get_modes = shmob_drm_connector_get_modes,
51c13278
LP		 687 .best_encoder = shmob_drm_connector_best_encoder,
688};
689
690static void shmob_drm_connector_destroy(struct drm_connector *connector)
691{
692 struct shmob_drm_connector *scon = to_shmob_connector(connector);
693
694 shmob_drm_backlight_exit(scon);
34ea3d38 695 drm_connector_unregister(connector);
51c13278
LP		 696 drm_connector_cleanup(connector);
697}
698
699static enum drm_connector_status
700shmob_drm_connector_detect(struct drm_connector *connector, bool force)
701{
702 return connector_status_connected;
703}
704
705static const struct drm_connector_funcs connector_funcs = {
706 .dpms = drm_helper_connector_dpms,
707 .detect = shmob_drm_connector_detect,
708 .fill_modes = drm_helper_probe_single_connector_modes,
709 .destroy = shmob_drm_connector_destroy,
710};
711
712int shmob_drm_connector_create(struct shmob_drm_device *sdev,
713 struct drm_encoder *encoder)
714{
715 struct drm_connector *connector = &sdev->connector.connector;
716 int ret;
717
718 sdev->connector.encoder = encoder;
719
720 connector->display_info.width_mm = sdev->pdata->panel.width_mm;
721 connector->display_info.height_mm = sdev->pdata->panel.height_mm;
722
723 ret = drm_connector_init(sdev->ddev, connector, &connector_funcs,
724 DRM_MODE_CONNECTOR_LVDS);
725 if (ret < 0)
726 return ret;
727
728 drm_connector_helper_add(connector, &connector_helper_funcs);
34ea3d38 729 ret = drm_connector_register(connector);
51c13278
LP		 730 if (ret < 0)
731 goto err_cleanup;
732
733 ret = shmob_drm_backlight_init(&sdev->connector);
734 if (ret < 0)
735 goto err_sysfs;
736
737 ret = drm_mode_connector_attach_encoder(connector, encoder);
738 if (ret < 0)
739 goto err_backlight;
740
741 connector->encoder = encoder;
742
743 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
c708a56d 744 drm_object_property_set_value(&connector->base,
51c13278
LP		 745 sdev->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
746
747 return 0;
748
749err_backlight:
750 shmob_drm_backlight_exit(&sdev->connector);
751err_sysfs:
34ea3d38 752 drm_connector_unregister(connector);
51c13278
LP		 753err_cleanup:
754 drm_connector_cleanup(connector);
755 return ret;
756}
Linux kernel - Deliverables
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