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