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1/*
2 * Copyright (C) 2012 Russell King
3 * Rewritten from the dovefb driver, and Armada510 manuals.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9#include <linux/clk.h>
10#include <linux/component.h>
11#include <linux/of_device.h>
12#include <linux/platform_device.h>
13#include <drm/drmP.h>
14#include <drm/drm_crtc_helper.h>
15#include <drm/drm_plane_helper.h>
16#include "armada_crtc.h"
17#include "armada_drm.h"
18#include "armada_fb.h"
19#include "armada_gem.h"
20#include "armada_hw.h"
21
22struct armada_frame_work {
23 struct armada_plane_work work;
24 struct drm_pending_vblank_event *event;
25 struct armada_regs regs[4];
26 struct drm_framebuffer *old_fb;
27};
28
29enum csc_mode {
30 CSC_AUTO = 0,
31 CSC_YUV_CCIR601 = 1,
32 CSC_YUV_CCIR709 = 2,
33 CSC_RGB_COMPUTER = 1,
34 CSC_RGB_STUDIO = 2,
35};
36
37static const uint32_t armada_primary_formats[] = {
38 DRM_FORMAT_UYVY,
39 DRM_FORMAT_YUYV,
40 DRM_FORMAT_VYUY,
41 DRM_FORMAT_YVYU,
42 DRM_FORMAT_ARGB8888,
43 DRM_FORMAT_ABGR8888,
44 DRM_FORMAT_XRGB8888,
45 DRM_FORMAT_XBGR8888,
46 DRM_FORMAT_RGB888,
47 DRM_FORMAT_BGR888,
48 DRM_FORMAT_ARGB1555,
49 DRM_FORMAT_ABGR1555,
50 DRM_FORMAT_RGB565,
51 DRM_FORMAT_BGR565,
52};
53
54/*
55 * A note about interlacing. Let's consider HDMI 1920x1080i.
56 * The timing parameters we have from X are:
57 * Hact HsyA HsyI Htot Vact VsyA VsyI Vtot
58 * 1920 2448 2492 2640 1080 1084 1094 1125
59 * Which get translated to:
60 * Hact HsyA HsyI Htot Vact VsyA VsyI Vtot
61 * 1920 2448 2492 2640 540 542 547 562
62 *
63 * This is how it is defined by CEA-861-D - line and pixel numbers are
64 * referenced to the rising edge of VSYNC and HSYNC. Total clocks per
65 * line: 2640. The odd frame, the first active line is at line 21, and
66 * the even frame, the first active line is 584.
67 *
68 * LN: 560 561 562 563 567 568 569
69 * DE: ~~~|____________________________//__________________________
70 * HSYNC: ____|~|_____|~|_____|~|_____|~|_//__|~|_____|~|_____|~|_____
71 * VSYNC: _________________________|~~~~~~//~~~~~~~~~~~~~~~|__________
72 * 22 blanking lines. VSYNC at 1320 (referenced to the HSYNC rising edge).
73 *
74 * LN: 1123 1124 1125 1 5 6 7
75 * DE: ~~~|____________________________//__________________________
76 * HSYNC: ____|~|_____|~|_____|~|_____|~|_//__|~|_____|~|_____|~|_____
77 * VSYNC: ____________________|~~~~~~~~~~~//~~~~~~~~~~|_______________
78 * 23 blanking lines
79 *
80 * The Armada LCD Controller line and pixel numbers are, like X timings,
81 * referenced to the top left of the active frame.
82 *
83 * So, translating these to our LCD controller:
84 * Odd frame, 563 total lines, VSYNC at line 543-548, pixel 1128.
85 * Even frame, 562 total lines, VSYNC at line 542-547, pixel 2448.
86 * Note: Vsync front porch remains constant!
87 *
88 * if (odd_frame) {
89 * vtotal = mode->crtc_vtotal + 1;
90 * vbackporch = mode->crtc_vsync_start - mode->crtc_vdisplay + 1;
91 * vhorizpos = mode->crtc_hsync_start - mode->crtc_htotal / 2
92 * } else {
93 * vtotal = mode->crtc_vtotal;
94 * vbackporch = mode->crtc_vsync_start - mode->crtc_vdisplay;
95 * vhorizpos = mode->crtc_hsync_start;
96 * }
97 * vfrontporch = mode->crtc_vtotal - mode->crtc_vsync_end;
98 *
99 * So, we need to reprogram these registers on each vsync event:
100 * LCD_SPU_V_PORCH, LCD_SPU_ADV_REG, LCD_SPUT_V_H_TOTAL
101 *
102 * Note: we do not use the frame done interrupts because these appear
103 * to happen too early, and lead to jitter on the display (presumably
104 * they occur at the end of the last active line, before the vsync back
105 * porch, which we're reprogramming.)
106 */
107
108void
109armada_drm_crtc_update_regs(struct armada_crtc *dcrtc, struct armada_regs *regs)
110{
111 while (regs->offset != ~0) {
112 void __iomem *reg = dcrtc->base + regs->offset;
113 uint32_t val;
114
115 val = regs->mask;
116 if (val != 0)
117 val &= readl_relaxed(reg);
118 writel_relaxed(val | regs->val, reg);
119 ++regs;
120 }
121}
122
123#define dpms_blanked(dpms) ((dpms) != DRM_MODE_DPMS_ON)
124
125static void armada_drm_crtc_update(struct armada_crtc *dcrtc)
126{
127 uint32_t dumb_ctrl;
128
129 dumb_ctrl = dcrtc->cfg_dumb_ctrl;
130
131 if (!dpms_blanked(dcrtc->dpms))
132 dumb_ctrl |= CFG_DUMB_ENA;
133
134 /*
135 * When the dumb interface isn't in DUMB24_RGB888_0 mode, it might
136 * be using SPI or GPIO. If we set this to DUMB_BLANK, we will
137 * force LCD_D[23:0] to output blank color, overriding the GPIO or
138 * SPI usage. So leave it as-is unless in DUMB24_RGB888_0 mode.
139 */
140 if (dpms_blanked(dcrtc->dpms) &&
141 (dumb_ctrl & DUMB_MASK) == DUMB24_RGB888_0) {
142 dumb_ctrl &= ~DUMB_MASK;
143 dumb_ctrl |= DUMB_BLANK;
144 }
145
146 /*
147 * The documentation doesn't indicate what the normal state of
148 * the sync signals are. Sebastian Hesselbart kindly probed
149 * these signals on his board to determine their state.
150 *
151 * The non-inverted state of the sync signals is active high.
152 * Setting these bits makes the appropriate signal active low.
153 */
154 if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NCSYNC)
155 dumb_ctrl |= CFG_INV_CSYNC;
156 if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NHSYNC)
157 dumb_ctrl |= CFG_INV_HSYNC;
158 if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NVSYNC)
159 dumb_ctrl |= CFG_INV_VSYNC;
160
161 if (dcrtc->dumb_ctrl != dumb_ctrl) {
162 dcrtc->dumb_ctrl = dumb_ctrl;
163 writel_relaxed(dumb_ctrl, dcrtc->base + LCD_SPU_DUMB_CTRL);
164 }
165}
166
167static unsigned armada_drm_crtc_calc_fb(struct drm_framebuffer *fb,
168 int x, int y, struct armada_regs *regs, bool interlaced)
169{
170 struct armada_gem_object *obj = drm_fb_obj(fb);
171 unsigned pitch = fb->pitches[0];
172 unsigned offset = y * pitch + x * fb->bits_per_pixel / 8;
173 uint32_t addr_odd, addr_even;
174 unsigned i = 0;
175
176 DRM_DEBUG_DRIVER("pitch %u x %d y %d bpp %d\n",
177 pitch, x, y, fb->bits_per_pixel);
178
179 addr_odd = addr_even = obj->dev_addr + offset;
180
181 if (interlaced) {
182 addr_even += pitch;
183 pitch *= 2;
184 }
185
186 /* write offset, base, and pitch */
187 armada_reg_queue_set(regs, i, addr_odd, LCD_CFG_GRA_START_ADDR0);
188 armada_reg_queue_set(regs, i, addr_even, LCD_CFG_GRA_START_ADDR1);
189 armada_reg_queue_mod(regs, i, pitch, 0xffff, LCD_CFG_GRA_PITCH);
190
191 return i;
192}
193
194static void armada_drm_plane_work_run(struct armada_crtc *dcrtc,
195 struct armada_plane *plane)
196{
197 struct armada_plane_work *work = xchg(&plane->work, NULL);
198
199 /* Handle any pending frame work. */
200 if (work) {
201 work->fn(dcrtc, plane, work);
202 drm_vblank_put(dcrtc->crtc.dev, dcrtc->num);
203 }
204
205 wake_up(&plane->frame_wait);
206}
207
208int armada_drm_plane_work_queue(struct armada_crtc *dcrtc,
209 struct armada_plane *plane, struct armada_plane_work *work)
210{
211 int ret;
212
213 ret = drm_vblank_get(dcrtc->crtc.dev, dcrtc->num);
214 if (ret) {
215 DRM_ERROR("failed to acquire vblank counter\n");
216 return ret;
217 }
218
219 ret = cmpxchg(&plane->work, NULL, work) ? -EBUSY : 0;
220 if (ret)
221 drm_vblank_put(dcrtc->crtc.dev, dcrtc->num);
222
223 return ret;
224}
225
226int armada_drm_plane_work_wait(struct armada_plane *plane, long timeout)
227{
228 return wait_event_timeout(plane->frame_wait, !plane->work, timeout);
229}
230
231struct armada_plane_work *armada_drm_plane_work_cancel(
232 struct armada_crtc *dcrtc, struct armada_plane *plane)
233{
234 struct armada_plane_work *work = xchg(&plane->work, NULL);
235
236 if (work)
237 drm_vblank_put(dcrtc->crtc.dev, dcrtc->num);
238
239 return work;
240}
241
242static int armada_drm_crtc_queue_frame_work(struct armada_crtc *dcrtc,
243 struct armada_frame_work *work)
244{
245 struct armada_plane *plane = drm_to_armada_plane(dcrtc->crtc.primary);
246
247 return armada_drm_plane_work_queue(dcrtc, plane, &work->work);
248}
249
250static void armada_drm_crtc_complete_frame_work(struct armada_crtc *dcrtc,
251 struct armada_plane *plane, struct armada_plane_work *work)
252{
253 struct armada_frame_work *fwork = container_of(work, struct armada_frame_work, work);
254 struct drm_device *dev = dcrtc->crtc.dev;
255 unsigned long flags;
256
257 spin_lock_irqsave(&dcrtc->irq_lock, flags);
258 armada_drm_crtc_update_regs(dcrtc, fwork->regs);
259 spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
260
261 if (fwork->event) {
262 spin_lock_irqsave(&dev->event_lock, flags);
263 drm_send_vblank_event(dev, dcrtc->num, fwork->event);
264 spin_unlock_irqrestore(&dev->event_lock, flags);
265 }
266
267 /* Finally, queue the process-half of the cleanup. */
268 __armada_drm_queue_unref_work(dcrtc->crtc.dev, fwork->old_fb);
269 kfree(fwork);
270}
271
272static void armada_drm_crtc_finish_fb(struct armada_crtc *dcrtc,
273 struct drm_framebuffer *fb, bool force)
274{
275 struct armada_frame_work *work;
276
277 if (!fb)
278 return;
279
280 if (force) {
281 /* Display is disabled, so just drop the old fb */
282 drm_framebuffer_unreference(fb);
283 return;
284 }
285
286 work = kmalloc(sizeof(*work), GFP_KERNEL);
287 if (work) {
288 int i = 0;
289 work->work.fn = armada_drm_crtc_complete_frame_work;
290 work->event = NULL;
291 work->old_fb = fb;
292 armada_reg_queue_end(work->regs, i);
293
294 if (armada_drm_crtc_queue_frame_work(dcrtc, work) == 0)
295 return;
296
297 kfree(work);
298 }
299
300 /*
301 * Oops - just drop the reference immediately and hope for
302 * the best. The worst that will happen is the buffer gets
303 * reused before it has finished being displayed.
304 */
305 drm_framebuffer_unreference(fb);
306}
307
308static void armada_drm_vblank_off(struct armada_crtc *dcrtc)
309{
310 struct armada_plane *plane = drm_to_armada_plane(dcrtc->crtc.primary);
311
312 /*
313 * Tell the DRM core that vblank IRQs aren't going to happen for
314 * a while. This cleans up any pending vblank events for us.
315 */
316 drm_crtc_vblank_off(&dcrtc->crtc);
317 armada_drm_plane_work_run(dcrtc, plane);
318}
319
320void armada_drm_crtc_gamma_set(struct drm_crtc *crtc, u16 r, u16 g, u16 b,
321 int idx)
322{
323}
324
325void armada_drm_crtc_gamma_get(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
326 int idx)
327{
328}
329
330/* The mode_config.mutex will be held for this call */
331static void armada_drm_crtc_dpms(struct drm_crtc *crtc, int dpms)
332{
333 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
334
335 if (dcrtc->dpms != dpms) {
336 dcrtc->dpms = dpms;
337 if (!IS_ERR(dcrtc->clk) && !dpms_blanked(dpms))
338 WARN_ON(clk_prepare_enable(dcrtc->clk));
339 armada_drm_crtc_update(dcrtc);
340 if (!IS_ERR(dcrtc->clk) && dpms_blanked(dpms))
341 clk_disable_unprepare(dcrtc->clk);
342 if (dpms_blanked(dpms))
343 armada_drm_vblank_off(dcrtc);
344 else
345 drm_crtc_vblank_on(&dcrtc->crtc);
346 }
347}
348
349/*
350 * Prepare for a mode set. Turn off overlay to ensure that we don't end
351 * up with the overlay size being bigger than the active screen size.
352 * We rely upon X refreshing this state after the mode set has completed.
353 *
354 * The mode_config.mutex will be held for this call
355 */
356static void armada_drm_crtc_prepare(struct drm_crtc *crtc)
357{
358 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
359 struct drm_plane *plane;
360
361 /*
362 * If we have an overlay plane associated with this CRTC, disable
363 * it before the modeset to avoid its coordinates being outside
364 * the new mode parameters.
365 */
366 plane = dcrtc->plane;
367 if (plane)
368 drm_plane_force_disable(plane);
369}
370
371/* The mode_config.mutex will be held for this call */
372static void armada_drm_crtc_commit(struct drm_crtc *crtc)
373{
374 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
375
376 if (dcrtc->dpms != DRM_MODE_DPMS_ON) {
377 dcrtc->dpms = DRM_MODE_DPMS_ON;
378 armada_drm_crtc_update(dcrtc);
379 }
380}
381
382/* The mode_config.mutex will be held for this call */
383static bool armada_drm_crtc_mode_fixup(struct drm_crtc *crtc,
384 const struct drm_display_mode *mode, struct drm_display_mode *adj)
385{
386 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
387 int ret;
388
389 /* We can't do interlaced modes if we don't have the SPU_ADV_REG */
390 if (!dcrtc->variant->has_spu_adv_reg &&
391 adj->flags & DRM_MODE_FLAG_INTERLACE)
392 return false;
393
394 /* Check whether the display mode is possible */
395 ret = dcrtc->variant->compute_clock(dcrtc, adj, NULL);
396 if (ret)
397 return false;
398
399 return true;
400}
401
402static void armada_drm_crtc_irq(struct armada_crtc *dcrtc, u32 stat)
403{
404 void __iomem *base = dcrtc->base;
405 struct drm_plane *ovl_plane;
406
407 if (stat & DMA_FF_UNDERFLOW)
408 DRM_ERROR("video underflow on crtc %u\n", dcrtc->num);
409 if (stat & GRA_FF_UNDERFLOW)
410 DRM_ERROR("graphics underflow on crtc %u\n", dcrtc->num);
411
412 if (stat & VSYNC_IRQ)
413 drm_handle_vblank(dcrtc->crtc.dev, dcrtc->num);
414
415 spin_lock(&dcrtc->irq_lock);
416 ovl_plane = dcrtc->plane;
417 if (ovl_plane) {
418 struct armada_plane *plane = drm_to_armada_plane(ovl_plane);
419 armada_drm_plane_work_run(dcrtc, plane);
420 }
421
422 if (stat & GRA_FRAME_IRQ && dcrtc->interlaced) {
423 int i = stat & GRA_FRAME_IRQ0 ? 0 : 1;
424 uint32_t val;
425
426 writel_relaxed(dcrtc->v[i].spu_v_porch, base + LCD_SPU_V_PORCH);
427 writel_relaxed(dcrtc->v[i].spu_v_h_total,
428 base + LCD_SPUT_V_H_TOTAL);
429
430 val = readl_relaxed(base + LCD_SPU_ADV_REG);
431 val &= ~(ADV_VSYNC_L_OFF | ADV_VSYNC_H_OFF | ADV_VSYNCOFFEN);
432 val |= dcrtc->v[i].spu_adv_reg;
433 writel_relaxed(val, base + LCD_SPU_ADV_REG);
434 }
435
436 if (stat & DUMB_FRAMEDONE && dcrtc->cursor_update) {
437 writel_relaxed(dcrtc->cursor_hw_pos,
438 base + LCD_SPU_HWC_OVSA_HPXL_VLN);
439 writel_relaxed(dcrtc->cursor_hw_sz,
440 base + LCD_SPU_HWC_HPXL_VLN);
441 armada_updatel(CFG_HWC_ENA,
442 CFG_HWC_ENA | CFG_HWC_1BITMOD | CFG_HWC_1BITENA,
443 base + LCD_SPU_DMA_CTRL0);
444 dcrtc->cursor_update = false;
445 armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
446 }
447
448 spin_unlock(&dcrtc->irq_lock);
449
450 if (stat & GRA_FRAME_IRQ) {
451 struct armada_plane *plane = drm_to_armada_plane(dcrtc->crtc.primary);
452 armada_drm_plane_work_run(dcrtc, plane);
453 }
454}
455
456static irqreturn_t armada_drm_irq(int irq, void *arg)
457{
458 struct armada_crtc *dcrtc = arg;
459 u32 v, stat = readl_relaxed(dcrtc->base + LCD_SPU_IRQ_ISR);
460
461 /*
462 * This is rediculous - rather than writing bits to clear, we
463 * have to set the actual status register value. This is racy.
464 */
465 writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ISR);
466
467 /* Mask out those interrupts we haven't enabled */
468 v = stat & dcrtc->irq_ena;
469
470 if (v & (VSYNC_IRQ|GRA_FRAME_IRQ|DUMB_FRAMEDONE)) {
471 armada_drm_crtc_irq(dcrtc, stat);
472 return IRQ_HANDLED;
473 }
474 return IRQ_NONE;
475}
476
477/* These are locked by dev->vbl_lock */
478void armada_drm_crtc_disable_irq(struct armada_crtc *dcrtc, u32 mask)
479{
480 if (dcrtc->irq_ena & mask) {
481 dcrtc->irq_ena &= ~mask;
482 writel(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA);
483 }
484}
485
486void armada_drm_crtc_enable_irq(struct armada_crtc *dcrtc, u32 mask)
487{
488 if ((dcrtc->irq_ena & mask) != mask) {
489 dcrtc->irq_ena |= mask;
490 writel(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA);
491 if (readl_relaxed(dcrtc->base + LCD_SPU_IRQ_ISR) & mask)
492 writel(0, dcrtc->base + LCD_SPU_IRQ_ISR);
493 }
494}
495
496static uint32_t armada_drm_crtc_calculate_csc(struct armada_crtc *dcrtc)
497{
498 struct drm_display_mode *adj = &dcrtc->crtc.mode;
499 uint32_t val = 0;
500
501 if (dcrtc->csc_yuv_mode == CSC_YUV_CCIR709)
502 val |= CFG_CSC_YUV_CCIR709;
503 if (dcrtc->csc_rgb_mode == CSC_RGB_STUDIO)
504 val |= CFG_CSC_RGB_STUDIO;
505
506 /*
507 * In auto mode, set the colorimetry, based upon the HDMI spec.
508 * 1280x720p, 1920x1080p and 1920x1080i use ITU709, others use
509 * ITU601. It may be more appropriate to set this depending on
510 * the source - but what if the graphic frame is YUV and the
511 * video frame is RGB?
512 */
513 if ((adj->hdisplay == 1280 && adj->vdisplay == 720 &&
514 !(adj->flags & DRM_MODE_FLAG_INTERLACE)) ||
515 (adj->hdisplay == 1920 && adj->vdisplay == 1080)) {
516 if (dcrtc->csc_yuv_mode == CSC_AUTO)
517 val |= CFG_CSC_YUV_CCIR709;
518 }
519
520 /*
521 * We assume we're connected to a TV-like device, so the YUV->RGB
522 * conversion should produce a limited range. We should set this
523 * depending on the connectors attached to this CRTC, and what
524 * kind of device they report being connected.
525 */
526 if (dcrtc->csc_rgb_mode == CSC_AUTO)
527 val |= CFG_CSC_RGB_STUDIO;
528
529 return val;
530}
531
532/* The mode_config.mutex will be held for this call */
533static int armada_drm_crtc_mode_set(struct drm_crtc *crtc,
534 struct drm_display_mode *mode, struct drm_display_mode *adj,
535 int x, int y, struct drm_framebuffer *old_fb)
536{
537 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
538 struct armada_regs regs[17];
539 uint32_t lm, rm, tm, bm, val, sclk;
540 unsigned long flags;
541 unsigned i;
542 bool interlaced;
543
544 drm_framebuffer_reference(crtc->primary->fb);
545
546 interlaced = !!(adj->flags & DRM_MODE_FLAG_INTERLACE);
547
548 i = armada_drm_crtc_calc_fb(dcrtc->crtc.primary->fb,
549 x, y, regs, interlaced);
550
551 rm = adj->crtc_hsync_start - adj->crtc_hdisplay;
552 lm = adj->crtc_htotal - adj->crtc_hsync_end;
553 bm = adj->crtc_vsync_start - adj->crtc_vdisplay;
554 tm = adj->crtc_vtotal - adj->crtc_vsync_end;
555
556 DRM_DEBUG_DRIVER("H: %d %d %d %d lm %d rm %d\n",
557 adj->crtc_hdisplay,
558 adj->crtc_hsync_start,
559 adj->crtc_hsync_end,
560 adj->crtc_htotal, lm, rm);
561 DRM_DEBUG_DRIVER("V: %d %d %d %d tm %d bm %d\n",
562 adj->crtc_vdisplay,
563 adj->crtc_vsync_start,
564 adj->crtc_vsync_end,
565 adj->crtc_vtotal, tm, bm);
566
567 /* Wait for pending flips to complete */
568 armada_drm_plane_work_wait(drm_to_armada_plane(dcrtc->crtc.primary),
569 MAX_SCHEDULE_TIMEOUT);
570
571 drm_crtc_vblank_off(crtc);
572
573 val = dcrtc->dumb_ctrl & ~CFG_DUMB_ENA;
574 if (val != dcrtc->dumb_ctrl) {
575 dcrtc->dumb_ctrl = val;
576 writel_relaxed(val, dcrtc->base + LCD_SPU_DUMB_CTRL);
577 }
578
579 /*
580 * If we are blanked, we would have disabled the clock. Re-enable
581 * it so that compute_clock() does the right thing.
582 */
583 if (!IS_ERR(dcrtc->clk) && dpms_blanked(dcrtc->dpms))
584 WARN_ON(clk_prepare_enable(dcrtc->clk));
585
586 /* Now compute the divider for real */
587 dcrtc->variant->compute_clock(dcrtc, adj, &sclk);
588
589 /* Ensure graphic fifo is enabled */
590 armada_reg_queue_mod(regs, i, 0, CFG_PDWN64x66, LCD_SPU_SRAM_PARA1);
591 armada_reg_queue_set(regs, i, sclk, LCD_CFG_SCLK_DIV);
592
593 if (interlaced ^ dcrtc->interlaced) {
594 if (adj->flags & DRM_MODE_FLAG_INTERLACE)
595 drm_vblank_get(dcrtc->crtc.dev, dcrtc->num);
596 else
597 drm_vblank_put(dcrtc->crtc.dev, dcrtc->num);
598 dcrtc->interlaced = interlaced;
599 }
600
601 spin_lock_irqsave(&dcrtc->irq_lock, flags);
602
603 /* Even interlaced/progressive frame */
604 dcrtc->v[1].spu_v_h_total = adj->crtc_vtotal << 16 |
605 adj->crtc_htotal;
606 dcrtc->v[1].spu_v_porch = tm << 16 | bm;
607 val = adj->crtc_hsync_start;
608 dcrtc->v[1].spu_adv_reg = val << 20 | val | ADV_VSYNCOFFEN |
609 dcrtc->variant->spu_adv_reg;
610
611 if (interlaced) {
612 /* Odd interlaced frame */
613 dcrtc->v[0].spu_v_h_total = dcrtc->v[1].spu_v_h_total +
614 (1 << 16);
615 dcrtc->v[0].spu_v_porch = dcrtc->v[1].spu_v_porch + 1;
616 val = adj->crtc_hsync_start - adj->crtc_htotal / 2;
617 dcrtc->v[0].spu_adv_reg = val << 20 | val | ADV_VSYNCOFFEN |
618 dcrtc->variant->spu_adv_reg;
619 } else {
620 dcrtc->v[0] = dcrtc->v[1];
621 }
622
623 val = adj->crtc_vdisplay << 16 | adj->crtc_hdisplay;
624
625 armada_reg_queue_set(regs, i, val, LCD_SPU_V_H_ACTIVE);
626 armada_reg_queue_set(regs, i, val, LCD_SPU_GRA_HPXL_VLN);
627 armada_reg_queue_set(regs, i, val, LCD_SPU_GZM_HPXL_VLN);
628 armada_reg_queue_set(regs, i, (lm << 16) | rm, LCD_SPU_H_PORCH);
629 armada_reg_queue_set(regs, i, dcrtc->v[0].spu_v_porch, LCD_SPU_V_PORCH);
630 armada_reg_queue_set(regs, i, dcrtc->v[0].spu_v_h_total,
631 LCD_SPUT_V_H_TOTAL);
632
633 if (dcrtc->variant->has_spu_adv_reg) {
634 armada_reg_queue_mod(regs, i, dcrtc->v[0].spu_adv_reg,
635 ADV_VSYNC_L_OFF | ADV_VSYNC_H_OFF |
636 ADV_VSYNCOFFEN, LCD_SPU_ADV_REG);
637 }
638
639 val = CFG_GRA_ENA | CFG_GRA_HSMOOTH;
640 val |= CFG_GRA_FMT(drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->fmt);
641 val |= CFG_GRA_MOD(drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->mod);
642
643 if (drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->fmt > CFG_420)
644 val |= CFG_PALETTE_ENA;
645
646 if (interlaced)
647 val |= CFG_GRA_FTOGGLE;
648
649 armada_reg_queue_mod(regs, i, val, CFG_GRAFORMAT |
650 CFG_GRA_MOD(CFG_SWAPRB | CFG_SWAPUV |
651 CFG_SWAPYU | CFG_YUV2RGB) |
652 CFG_PALETTE_ENA | CFG_GRA_FTOGGLE,
653 LCD_SPU_DMA_CTRL0);
654
655 val = adj->flags & DRM_MODE_FLAG_NVSYNC ? CFG_VSYNC_INV : 0;
656 armada_reg_queue_mod(regs, i, val, CFG_VSYNC_INV, LCD_SPU_DMA_CTRL1);
657
658 val = dcrtc->spu_iopad_ctrl | armada_drm_crtc_calculate_csc(dcrtc);
659 armada_reg_queue_set(regs, i, val, LCD_SPU_IOPAD_CONTROL);
660 armada_reg_queue_end(regs, i);
661
662 armada_drm_crtc_update_regs(dcrtc, regs);
663 spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
664
665 armada_drm_crtc_update(dcrtc);
666
667 drm_crtc_vblank_on(crtc);
668 armada_drm_crtc_finish_fb(dcrtc, old_fb, dpms_blanked(dcrtc->dpms));
669
670 return 0;
671}
672
673/* The mode_config.mutex will be held for this call */
674static int armada_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
675 struct drm_framebuffer *old_fb)
676{
677 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
678 struct armada_regs regs[4];
679 unsigned i;
680
681 i = armada_drm_crtc_calc_fb(crtc->primary->fb, crtc->x, crtc->y, regs,
682 dcrtc->interlaced);
683 armada_reg_queue_end(regs, i);
684
685 /* Wait for pending flips to complete */
686 armada_drm_plane_work_wait(drm_to_armada_plane(dcrtc->crtc.primary),
687 MAX_SCHEDULE_TIMEOUT);
688
689 /* Take a reference to the new fb as we're using it */
690 drm_framebuffer_reference(crtc->primary->fb);
691
692 /* Update the base in the CRTC */
693 armada_drm_crtc_update_regs(dcrtc, regs);
694
695 /* Drop our previously held reference */
696 armada_drm_crtc_finish_fb(dcrtc, old_fb, dpms_blanked(dcrtc->dpms));
697
698 return 0;
699}
700
701void armada_drm_crtc_plane_disable(struct armada_crtc *dcrtc,
702 struct drm_plane *plane)
703{
704 u32 sram_para1, dma_ctrl0_mask;
705
706 /*
707 * Drop our reference on any framebuffer attached to this plane.
708 * We don't need to NULL this out as drm_plane_force_disable(),
709 * and __setplane_internal() will do so for an overlay plane, and
710 * __drm_helper_disable_unused_functions() will do so for the
711 * primary plane.
712 */
713 if (plane->fb)
714 drm_framebuffer_unreference(plane->fb);
715
716 /* Power down the Y/U/V FIFOs */
717 sram_para1 = CFG_PDWN16x66 | CFG_PDWN32x66;
718
719 /* Power down most RAMs and FIFOs if this is the primary plane */
720 if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
721 sram_para1 |= CFG_PDWN256x32 | CFG_PDWN256x24 | CFG_PDWN256x8 |
722 CFG_PDWN32x32 | CFG_PDWN64x66;
723 dma_ctrl0_mask = CFG_GRA_ENA;
724 } else {
725 dma_ctrl0_mask = CFG_DMA_ENA;
726 }
727
728 spin_lock_irq(&dcrtc->irq_lock);
729 armada_updatel(0, dma_ctrl0_mask, dcrtc->base + LCD_SPU_DMA_CTRL0);
730 spin_unlock_irq(&dcrtc->irq_lock);
731
732 armada_updatel(sram_para1, 0, dcrtc->base + LCD_SPU_SRAM_PARA1);
733}
734
735/* The mode_config.mutex will be held for this call */
736static void armada_drm_crtc_disable(struct drm_crtc *crtc)
737{
738 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
739
740 armada_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
741 armada_drm_crtc_plane_disable(dcrtc, crtc->primary);
742}
743
744static const struct drm_crtc_helper_funcs armada_crtc_helper_funcs = {
745 .dpms = armada_drm_crtc_dpms,
746 .prepare = armada_drm_crtc_prepare,
747 .commit = armada_drm_crtc_commit,
748 .mode_fixup = armada_drm_crtc_mode_fixup,
749 .mode_set = armada_drm_crtc_mode_set,
750 .mode_set_base = armada_drm_crtc_mode_set_base,
751 .disable = armada_drm_crtc_disable,
752};
753
754static void armada_load_cursor_argb(void __iomem *base, uint32_t *pix,
755 unsigned stride, unsigned width, unsigned height)
756{
757 uint32_t addr;
758 unsigned y;
759
760 addr = SRAM_HWC32_RAM1;
761 for (y = 0; y < height; y++) {
762 uint32_t *p = &pix[y * stride];
763 unsigned x;
764
765 for (x = 0; x < width; x++, p++) {
766 uint32_t val = *p;
767
768 val = (val & 0xff00ff00) |
769 (val & 0x000000ff) << 16 |
770 (val & 0x00ff0000) >> 16;
771
772 writel_relaxed(val,
773 base + LCD_SPU_SRAM_WRDAT);
774 writel_relaxed(addr | SRAM_WRITE,
775 base + LCD_SPU_SRAM_CTRL);
776 readl_relaxed(base + LCD_SPU_HWC_OVSA_HPXL_VLN);
777 addr += 1;
778 if ((addr & 0x00ff) == 0)
779 addr += 0xf00;
780 if ((addr & 0x30ff) == 0)
781 addr = SRAM_HWC32_RAM2;
782 }
783 }
784}
785
786static void armada_drm_crtc_cursor_tran(void __iomem *base)
787{
788 unsigned addr;
789
790 for (addr = 0; addr < 256; addr++) {
791 /* write the default value */
792 writel_relaxed(0x55555555, base + LCD_SPU_SRAM_WRDAT);
793 writel_relaxed(addr | SRAM_WRITE | SRAM_HWC32_TRAN,
794 base + LCD_SPU_SRAM_CTRL);
795 }
796}
797
798static int armada_drm_crtc_cursor_update(struct armada_crtc *dcrtc, bool reload)
799{
800 uint32_t xoff, xscr, w = dcrtc->cursor_w, s;
801 uint32_t yoff, yscr, h = dcrtc->cursor_h;
802 uint32_t para1;
803
804 /*
805 * Calculate the visible width and height of the cursor,
806 * screen position, and the position in the cursor bitmap.
807 */
808 if (dcrtc->cursor_x < 0) {
809 xoff = -dcrtc->cursor_x;
810 xscr = 0;
811 w -= min(xoff, w);
812 } else if (dcrtc->cursor_x + w > dcrtc->crtc.mode.hdisplay) {
813 xoff = 0;
814 xscr = dcrtc->cursor_x;
815 w = max_t(int, dcrtc->crtc.mode.hdisplay - dcrtc->cursor_x, 0);
816 } else {
817 xoff = 0;
818 xscr = dcrtc->cursor_x;
819 }
820
821 if (dcrtc->cursor_y < 0) {
822 yoff = -dcrtc->cursor_y;
823 yscr = 0;
824 h -= min(yoff, h);
825 } else if (dcrtc->cursor_y + h > dcrtc->crtc.mode.vdisplay) {
826 yoff = 0;
827 yscr = dcrtc->cursor_y;
828 h = max_t(int, dcrtc->crtc.mode.vdisplay - dcrtc->cursor_y, 0);
829 } else {
830 yoff = 0;
831 yscr = dcrtc->cursor_y;
832 }
833
834 /* On interlaced modes, the vertical cursor size must be halved */
835 s = dcrtc->cursor_w;
836 if (dcrtc->interlaced) {
837 s *= 2;
838 yscr /= 2;
839 h /= 2;
840 }
841
842 if (!dcrtc->cursor_obj || !h || !w) {
843 spin_lock_irq(&dcrtc->irq_lock);
844 armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
845 dcrtc->cursor_update = false;
846 armada_updatel(0, CFG_HWC_ENA, dcrtc->base + LCD_SPU_DMA_CTRL0);
847 spin_unlock_irq(&dcrtc->irq_lock);
848 return 0;
849 }
850
851 para1 = readl_relaxed(dcrtc->base + LCD_SPU_SRAM_PARA1);
852 armada_updatel(CFG_CSB_256x32, CFG_CSB_256x32 | CFG_PDWN256x32,
853 dcrtc->base + LCD_SPU_SRAM_PARA1);
854
855 /*
856 * Initialize the transparency if the SRAM was powered down.
857 * We must also reload the cursor data as well.
858 */
859 if (!(para1 & CFG_CSB_256x32)) {
860 armada_drm_crtc_cursor_tran(dcrtc->base);
861 reload = true;
862 }
863
864 if (dcrtc->cursor_hw_sz != (h << 16 | w)) {
865 spin_lock_irq(&dcrtc->irq_lock);
866 armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
867 dcrtc->cursor_update = false;
868 armada_updatel(0, CFG_HWC_ENA, dcrtc->base + LCD_SPU_DMA_CTRL0);
869 spin_unlock_irq(&dcrtc->irq_lock);
870 reload = true;
871 }
872 if (reload) {
873 struct armada_gem_object *obj = dcrtc->cursor_obj;
874 uint32_t *pix;
875 /* Set the top-left corner of the cursor image */
876 pix = obj->addr;
877 pix += yoff * s + xoff;
878 armada_load_cursor_argb(dcrtc->base, pix, s, w, h);
879 }
880
881 /* Reload the cursor position, size and enable in the IRQ handler */
882 spin_lock_irq(&dcrtc->irq_lock);
883 dcrtc->cursor_hw_pos = yscr << 16 | xscr;
884 dcrtc->cursor_hw_sz = h << 16 | w;
885 dcrtc->cursor_update = true;
886 armada_drm_crtc_enable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
887 spin_unlock_irq(&dcrtc->irq_lock);
888
889 return 0;
890}
891
892static void cursor_update(void *data)
893{
894 armada_drm_crtc_cursor_update(data, true);
895}
896
897static int armada_drm_crtc_cursor_set(struct drm_crtc *crtc,
898 struct drm_file *file, uint32_t handle, uint32_t w, uint32_t h)
899{
900 struct drm_device *dev = crtc->dev;
901 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
902 struct armada_gem_object *obj = NULL;
903 int ret;
904
905 /* If no cursor support, replicate drm's return value */
906 if (!dcrtc->variant->has_spu_adv_reg)
907 return -ENXIO;
908
909 if (handle && w > 0 && h > 0) {
910 /* maximum size is 64x32 or 32x64 */
911 if (w > 64 || h > 64 || (w > 32 && h > 32))
912 return -ENOMEM;
913
914 obj = armada_gem_object_lookup(dev, file, handle);
915 if (!obj)
916 return -ENOENT;
917
918 /* Must be a kernel-mapped object */
919 if (!obj->addr) {
920 drm_gem_object_unreference_unlocked(&obj->obj);
921 return -EINVAL;
922 }
923
924 if (obj->obj.size < w * h * 4) {
925 DRM_ERROR("buffer is too small\n");
926 drm_gem_object_unreference_unlocked(&obj->obj);
927 return -ENOMEM;
928 }
929 }
930
931 if (dcrtc->cursor_obj) {
932 dcrtc->cursor_obj->update = NULL;
933 dcrtc->cursor_obj->update_data = NULL;
934 drm_gem_object_unreference_unlocked(&dcrtc->cursor_obj->obj);
935 }
936 dcrtc->cursor_obj = obj;
937 dcrtc->cursor_w = w;
938 dcrtc->cursor_h = h;
939 ret = armada_drm_crtc_cursor_update(dcrtc, true);
940 if (obj) {
941 obj->update_data = dcrtc;
942 obj->update = cursor_update;
943 }
944
945 return ret;
946}
947
948static int armada_drm_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
949{
950 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
951 int ret;
952
953 /* If no cursor support, replicate drm's return value */
954 if (!dcrtc->variant->has_spu_adv_reg)
955 return -EFAULT;
956
957 dcrtc->cursor_x = x;
958 dcrtc->cursor_y = y;
959 ret = armada_drm_crtc_cursor_update(dcrtc, false);
960
961 return ret;
962}
963
964static void armada_drm_crtc_destroy(struct drm_crtc *crtc)
965{
966 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
967 struct armada_private *priv = crtc->dev->dev_private;
968
969 if (dcrtc->cursor_obj)
970 drm_gem_object_unreference_unlocked(&dcrtc->cursor_obj->obj);
971
972 priv->dcrtc[dcrtc->num] = NULL;
973 drm_crtc_cleanup(&dcrtc->crtc);
974
975 if (!IS_ERR(dcrtc->clk))
976 clk_disable_unprepare(dcrtc->clk);
977
978 writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ENA);
979
980 of_node_put(dcrtc->crtc.port);
981
982 kfree(dcrtc);
983}
984
985/*
986 * The mode_config lock is held here, to prevent races between this
987 * and a mode_set.
988 */
989static int armada_drm_crtc_page_flip(struct drm_crtc *crtc,
990 struct drm_framebuffer *fb, struct drm_pending_vblank_event *event, uint32_t page_flip_flags)
991{
992 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
993 struct armada_frame_work *work;
994 unsigned i;
995 int ret;
996
997 /* We don't support changing the pixel format */
998 if (fb->pixel_format != crtc->primary->fb->pixel_format)
999 return -EINVAL;
1000
1001 work = kmalloc(sizeof(*work), GFP_KERNEL);
1002 if (!work)
1003 return -ENOMEM;
1004
1005 work->work.fn = armada_drm_crtc_complete_frame_work;
1006 work->event = event;
1007 work->old_fb = dcrtc->crtc.primary->fb;
1008
1009 i = armada_drm_crtc_calc_fb(fb, crtc->x, crtc->y, work->regs,
1010 dcrtc->interlaced);
1011 armada_reg_queue_end(work->regs, i);
1012
1013 /*
1014 * Ensure that we hold a reference on the new framebuffer.
1015 * This has to match the behaviour in mode_set.
1016 */
1017 drm_framebuffer_reference(fb);
1018
1019 ret = armada_drm_crtc_queue_frame_work(dcrtc, work);
1020 if (ret) {
1021 /* Undo our reference above */
1022 drm_framebuffer_unreference(fb);
1023 kfree(work);
1024 return ret;
1025 }
1026
1027 /*
1028 * Don't take a reference on the new framebuffer;
1029 * drm_mode_page_flip_ioctl() has already grabbed a reference and
1030 * will _not_ drop that reference on successful return from this
1031 * function. Simply mark this new framebuffer as the current one.
1032 */
1033 dcrtc->crtc.primary->fb = fb;
1034
1035 /*
1036 * Finally, if the display is blanked, we won't receive an
1037 * interrupt, so complete it now.
1038 */
1039 if (dpms_blanked(dcrtc->dpms))
1040 armada_drm_plane_work_run(dcrtc, drm_to_armada_plane(dcrtc->crtc.primary));
1041
1042 return 0;
1043}
1044
1045static int
1046armada_drm_crtc_set_property(struct drm_crtc *crtc,
1047 struct drm_property *property, uint64_t val)
1048{
1049 struct armada_private *priv = crtc->dev->dev_private;
1050 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
1051 bool update_csc = false;
1052
1053 if (property == priv->csc_yuv_prop) {
1054 dcrtc->csc_yuv_mode = val;
1055 update_csc = true;
1056 } else if (property == priv->csc_rgb_prop) {
1057 dcrtc->csc_rgb_mode = val;
1058 update_csc = true;
1059 }
1060
1061 if (update_csc) {
1062 uint32_t val;
1063
1064 val = dcrtc->spu_iopad_ctrl |
1065 armada_drm_crtc_calculate_csc(dcrtc);
1066 writel_relaxed(val, dcrtc->base + LCD_SPU_IOPAD_CONTROL);
1067 }
1068
1069 return 0;
1070}
1071
1072static const struct drm_crtc_funcs armada_crtc_funcs = {
1073 .cursor_set = armada_drm_crtc_cursor_set,
1074 .cursor_move = armada_drm_crtc_cursor_move,
1075 .destroy = armada_drm_crtc_destroy,
1076 .set_config = drm_crtc_helper_set_config,
1077 .page_flip = armada_drm_crtc_page_flip,
1078 .set_property = armada_drm_crtc_set_property,
1079};
1080
1081static const struct drm_plane_funcs armada_primary_plane_funcs = {
1082 .update_plane = drm_primary_helper_update,
1083 .disable_plane = drm_primary_helper_disable,
1084 .destroy = drm_primary_helper_destroy,
1085};
1086
1087int armada_drm_plane_init(struct armada_plane *plane)
1088{
1089 init_waitqueue_head(&plane->frame_wait);
1090
1091 return 0;
1092}
1093
1094static struct drm_prop_enum_list armada_drm_csc_yuv_enum_list[] = {
1095 { CSC_AUTO, "Auto" },
1096 { CSC_YUV_CCIR601, "CCIR601" },
1097 { CSC_YUV_CCIR709, "CCIR709" },
1098};
1099
1100static struct drm_prop_enum_list armada_drm_csc_rgb_enum_list[] = {
1101 { CSC_AUTO, "Auto" },
1102 { CSC_RGB_COMPUTER, "Computer system" },
1103 { CSC_RGB_STUDIO, "Studio" },
1104};
1105
1106static int armada_drm_crtc_create_properties(struct drm_device *dev)
1107{
1108 struct armada_private *priv = dev->dev_private;
1109
1110 if (priv->csc_yuv_prop)
1111 return 0;
1112
1113 priv->csc_yuv_prop = drm_property_create_enum(dev, 0,
1114 "CSC_YUV", armada_drm_csc_yuv_enum_list,
1115 ARRAY_SIZE(armada_drm_csc_yuv_enum_list));
1116 priv->csc_rgb_prop = drm_property_create_enum(dev, 0,
1117 "CSC_RGB", armada_drm_csc_rgb_enum_list,
1118 ARRAY_SIZE(armada_drm_csc_rgb_enum_list));
1119
1120 if (!priv->csc_yuv_prop || !priv->csc_rgb_prop)
1121 return -ENOMEM;
1122
1123 return 0;
1124}
1125
1126static int armada_drm_crtc_create(struct drm_device *drm, struct device *dev,
1127 struct resource *res, int irq, const struct armada_variant *variant,
1128 struct device_node *port)
1129{
1130 struct armada_private *priv = drm->dev_private;
1131 struct armada_crtc *dcrtc;
1132 struct armada_plane *primary;
1133 void __iomem *base;
1134 int ret;
1135
1136 ret = armada_drm_crtc_create_properties(drm);
1137 if (ret)
1138 return ret;
1139
1140 base = devm_ioremap_resource(dev, res);
1141 if (IS_ERR(base))
1142 return PTR_ERR(base);
1143
1144 dcrtc = kzalloc(sizeof(*dcrtc), GFP_KERNEL);
1145 if (!dcrtc) {
1146 DRM_ERROR("failed to allocate Armada crtc\n");
1147 return -ENOMEM;
1148 }
1149
1150 if (dev != drm->dev)
1151 dev_set_drvdata(dev, dcrtc);
1152
1153 dcrtc->variant = variant;
1154 dcrtc->base = base;
1155 dcrtc->num = drm->mode_config.num_crtc;
1156 dcrtc->clk = ERR_PTR(-EINVAL);
1157 dcrtc->csc_yuv_mode = CSC_AUTO;
1158 dcrtc->csc_rgb_mode = CSC_AUTO;
1159 dcrtc->cfg_dumb_ctrl = DUMB24_RGB888_0;
1160 dcrtc->spu_iopad_ctrl = CFG_VSCALE_LN_EN | CFG_IOPAD_DUMB24;
1161 spin_lock_init(&dcrtc->irq_lock);
1162 dcrtc->irq_ena = CLEAN_SPU_IRQ_ISR;
1163
1164 /* Initialize some registers which we don't otherwise set */
1165 writel_relaxed(0x00000001, dcrtc->base + LCD_CFG_SCLK_DIV);
1166 writel_relaxed(0x00000000, dcrtc->base + LCD_SPU_BLANKCOLOR);
1167 writel_relaxed(dcrtc->spu_iopad_ctrl,
1168 dcrtc->base + LCD_SPU_IOPAD_CONTROL);
1169 writel_relaxed(0x00000000, dcrtc->base + LCD_SPU_SRAM_PARA0);
1170 writel_relaxed(CFG_PDWN256x32 | CFG_PDWN256x24 | CFG_PDWN256x8 |
1171 CFG_PDWN32x32 | CFG_PDWN16x66 | CFG_PDWN32x66 |
1172 CFG_PDWN64x66, dcrtc->base + LCD_SPU_SRAM_PARA1);
1173 writel_relaxed(0x2032ff81, dcrtc->base + LCD_SPU_DMA_CTRL1);
1174 writel_relaxed(0x00000000, dcrtc->base + LCD_SPU_GRA_OVSA_HPXL_VLN);
1175 writel_relaxed(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA);
1176 writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ISR);
1177
1178 ret = devm_request_irq(dev, irq, armada_drm_irq, 0, "armada_drm_crtc",
1179 dcrtc);
1180 if (ret < 0) {
1181 kfree(dcrtc);
1182 return ret;
1183 }
1184
1185 if (dcrtc->variant->init) {
1186 ret = dcrtc->variant->init(dcrtc, dev);
1187 if (ret) {
1188 kfree(dcrtc);
1189 return ret;
1190 }
1191 }
1192
1193 /* Ensure AXI pipeline is enabled */
1194 armada_updatel(CFG_ARBFAST_ENA, 0, dcrtc->base + LCD_SPU_DMA_CTRL0);
1195
1196 priv->dcrtc[dcrtc->num] = dcrtc;
1197
1198 dcrtc->crtc.port = port;
1199
1200 primary = kzalloc(sizeof(*primary), GFP_KERNEL);
1201 if (!primary)
1202 return -ENOMEM;
1203
1204 ret = armada_drm_plane_init(primary);
1205 if (ret) {
1206 kfree(primary);
1207 return ret;
1208 }
1209
1210 ret = drm_universal_plane_init(drm, &primary->base, 0,
1211 &armada_primary_plane_funcs,
1212 armada_primary_formats,
1213 ARRAY_SIZE(armada_primary_formats),
1214 DRM_PLANE_TYPE_PRIMARY, NULL);
1215 if (ret) {
1216 kfree(primary);
1217 return ret;
1218 }
1219
1220 ret = drm_crtc_init_with_planes(drm, &dcrtc->crtc, &primary->base, NULL,
1221 &armada_crtc_funcs, NULL);
1222 if (ret)
1223 goto err_crtc_init;
1224
1225 drm_crtc_helper_add(&dcrtc->crtc, &armada_crtc_helper_funcs);
1226
1227 drm_object_attach_property(&dcrtc->crtc.base, priv->csc_yuv_prop,
1228 dcrtc->csc_yuv_mode);
1229 drm_object_attach_property(&dcrtc->crtc.base, priv->csc_rgb_prop,
1230 dcrtc->csc_rgb_mode);
1231
1232 return armada_overlay_plane_create(drm, 1 << dcrtc->num);
1233
1234err_crtc_init:
1235 primary->base.funcs->destroy(&primary->base);
1236 return ret;
1237}
1238
1239static int
1240armada_lcd_bind(struct device *dev, struct device *master, void *data)
1241{
1242 struct platform_device *pdev = to_platform_device(dev);
1243 struct drm_device *drm = data;
1244 struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1245 int irq = platform_get_irq(pdev, 0);
1246 const struct armada_variant *variant;
1247 struct device_node *port = NULL;
1248
1249 if (irq < 0)
1250 return irq;
1251
1252 if (!dev->of_node) {
1253 const struct platform_device_id *id;
1254
1255 id = platform_get_device_id(pdev);
1256 if (!id)
1257 return -ENXIO;
1258
1259 variant = (const struct armada_variant *)id->driver_data;
1260 } else {
1261 const struct of_device_id *match;
1262 struct device_node *np, *parent = dev->of_node;
1263
1264 match = of_match_device(dev->driver->of_match_table, dev);
1265 if (!match)
1266 return -ENXIO;
1267
1268 np = of_get_child_by_name(parent, "ports");
1269 if (np)
1270 parent = np;
1271 port = of_get_child_by_name(parent, "port");
1272 of_node_put(np);
1273 if (!port) {
1274 dev_err(dev, "no port node found in %s\n",
1275 parent->full_name);
1276 return -ENXIO;
1277 }
1278
1279 variant = match->data;
1280 }
1281
1282 return armada_drm_crtc_create(drm, dev, res, irq, variant, port);
1283}
1284
1285static void
1286armada_lcd_unbind(struct device *dev, struct device *master, void *data)
1287{
1288 struct armada_crtc *dcrtc = dev_get_drvdata(dev);
1289
1290 armada_drm_crtc_destroy(&dcrtc->crtc);
1291}
1292
1293static const struct component_ops armada_lcd_ops = {
1294 .bind = armada_lcd_bind,
1295 .unbind = armada_lcd_unbind,
1296};
1297
1298static int armada_lcd_probe(struct platform_device *pdev)
1299{
1300 return component_add(&pdev->dev, &armada_lcd_ops);
1301}
1302
1303static int armada_lcd_remove(struct platform_device *pdev)
1304{
1305 component_del(&pdev->dev, &armada_lcd_ops);
1306 return 0;
1307}
1308
1309static struct of_device_id armada_lcd_of_match[] = {
1310 {
1311 .compatible = "marvell,dove-lcd",
1312 .data = &armada510_ops,
1313 },
1314 {}
1315};
1316MODULE_DEVICE_TABLE(of, armada_lcd_of_match);
1317
1318static const struct platform_device_id armada_lcd_platform_ids[] = {
1319 {
1320 .name = "armada-lcd",
1321 .driver_data = (unsigned long)&armada510_ops,
1322 }, {
1323 .name = "armada-510-lcd",
1324 .driver_data = (unsigned long)&armada510_ops,
1325 },
1326 { },
1327};
1328MODULE_DEVICE_TABLE(platform, armada_lcd_platform_ids);
1329
1330struct platform_driver armada_lcd_platform_driver = {
1331 .probe = armada_lcd_probe,
1332 .remove = armada_lcd_remove,
1333 .driver = {
1334 .name = "armada-lcd",
1335 .owner = THIS_MODULE,
1336 .of_match_table = armada_lcd_of_match,
1337 },
1338 .id_table = armada_lcd_platform_ids,
1339};
1/*
2 * Copyright (C) 2012 Russell King
3 * Rewritten from the dovefb driver, and Armada510 manuals.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9#include <linux/clk.h>
10#include <linux/component.h>
11#include <linux/of_device.h>
12#include <linux/platform_device.h>
13#include <drm/drmP.h>
14#include <drm/drm_crtc_helper.h>
15#include <drm/drm_plane_helper.h>
16#include "armada_crtc.h"
17#include "armada_drm.h"
18#include "armada_fb.h"
19#include "armada_gem.h"
20#include "armada_hw.h"
21#include "armada_trace.h"
22
23struct armada_frame_work {
24 struct armada_plane_work work;
25 struct drm_pending_vblank_event *event;
26 struct armada_regs regs[4];
27 struct drm_framebuffer *old_fb;
28};
29
30enum csc_mode {
31 CSC_AUTO = 0,
32 CSC_YUV_CCIR601 = 1,
33 CSC_YUV_CCIR709 = 2,
34 CSC_RGB_COMPUTER = 1,
35 CSC_RGB_STUDIO = 2,
36};
37
38static const uint32_t armada_primary_formats[] = {
39 DRM_FORMAT_UYVY,
40 DRM_FORMAT_YUYV,
41 DRM_FORMAT_VYUY,
42 DRM_FORMAT_YVYU,
43 DRM_FORMAT_ARGB8888,
44 DRM_FORMAT_ABGR8888,
45 DRM_FORMAT_XRGB8888,
46 DRM_FORMAT_XBGR8888,
47 DRM_FORMAT_RGB888,
48 DRM_FORMAT_BGR888,
49 DRM_FORMAT_ARGB1555,
50 DRM_FORMAT_ABGR1555,
51 DRM_FORMAT_RGB565,
52 DRM_FORMAT_BGR565,
53};
54
55/*
56 * A note about interlacing. Let's consider HDMI 1920x1080i.
57 * The timing parameters we have from X are:
58 * Hact HsyA HsyI Htot Vact VsyA VsyI Vtot
59 * 1920 2448 2492 2640 1080 1084 1094 1125
60 * Which get translated to:
61 * Hact HsyA HsyI Htot Vact VsyA VsyI Vtot
62 * 1920 2448 2492 2640 540 542 547 562
63 *
64 * This is how it is defined by CEA-861-D - line and pixel numbers are
65 * referenced to the rising edge of VSYNC and HSYNC. Total clocks per
66 * line: 2640. The odd frame, the first active line is at line 21, and
67 * the even frame, the first active line is 584.
68 *
69 * LN: 560 561 562 563 567 568 569
70 * DE: ~~~|____________________________//__________________________
71 * HSYNC: ____|~|_____|~|_____|~|_____|~|_//__|~|_____|~|_____|~|_____
72 * VSYNC: _________________________|~~~~~~//~~~~~~~~~~~~~~~|__________
73 * 22 blanking lines. VSYNC at 1320 (referenced to the HSYNC rising edge).
74 *
75 * LN: 1123 1124 1125 1 5 6 7
76 * DE: ~~~|____________________________//__________________________
77 * HSYNC: ____|~|_____|~|_____|~|_____|~|_//__|~|_____|~|_____|~|_____
78 * VSYNC: ____________________|~~~~~~~~~~~//~~~~~~~~~~|_______________
79 * 23 blanking lines
80 *
81 * The Armada LCD Controller line and pixel numbers are, like X timings,
82 * referenced to the top left of the active frame.
83 *
84 * So, translating these to our LCD controller:
85 * Odd frame, 563 total lines, VSYNC at line 543-548, pixel 1128.
86 * Even frame, 562 total lines, VSYNC at line 542-547, pixel 2448.
87 * Note: Vsync front porch remains constant!
88 *
89 * if (odd_frame) {
90 * vtotal = mode->crtc_vtotal + 1;
91 * vbackporch = mode->crtc_vsync_start - mode->crtc_vdisplay + 1;
92 * vhorizpos = mode->crtc_hsync_start - mode->crtc_htotal / 2
93 * } else {
94 * vtotal = mode->crtc_vtotal;
95 * vbackporch = mode->crtc_vsync_start - mode->crtc_vdisplay;
96 * vhorizpos = mode->crtc_hsync_start;
97 * }
98 * vfrontporch = mode->crtc_vtotal - mode->crtc_vsync_end;
99 *
100 * So, we need to reprogram these registers on each vsync event:
101 * LCD_SPU_V_PORCH, LCD_SPU_ADV_REG, LCD_SPUT_V_H_TOTAL
102 *
103 * Note: we do not use the frame done interrupts because these appear
104 * to happen too early, and lead to jitter on the display (presumably
105 * they occur at the end of the last active line, before the vsync back
106 * porch, which we're reprogramming.)
107 */
108
109void
110armada_drm_crtc_update_regs(struct armada_crtc *dcrtc, struct armada_regs *regs)
111{
112 while (regs->offset != ~0) {
113 void __iomem *reg = dcrtc->base + regs->offset;
114 uint32_t val;
115
116 val = regs->mask;
117 if (val != 0)
118 val &= readl_relaxed(reg);
119 writel_relaxed(val | regs->val, reg);
120 ++regs;
121 }
122}
123
124#define dpms_blanked(dpms) ((dpms) != DRM_MODE_DPMS_ON)
125
126static void armada_drm_crtc_update(struct armada_crtc *dcrtc)
127{
128 uint32_t dumb_ctrl;
129
130 dumb_ctrl = dcrtc->cfg_dumb_ctrl;
131
132 if (!dpms_blanked(dcrtc->dpms))
133 dumb_ctrl |= CFG_DUMB_ENA;
134
135 /*
136 * When the dumb interface isn't in DUMB24_RGB888_0 mode, it might
137 * be using SPI or GPIO. If we set this to DUMB_BLANK, we will
138 * force LCD_D[23:0] to output blank color, overriding the GPIO or
139 * SPI usage. So leave it as-is unless in DUMB24_RGB888_0 mode.
140 */
141 if (dpms_blanked(dcrtc->dpms) &&
142 (dumb_ctrl & DUMB_MASK) == DUMB24_RGB888_0) {
143 dumb_ctrl &= ~DUMB_MASK;
144 dumb_ctrl |= DUMB_BLANK;
145 }
146
147 /*
148 * The documentation doesn't indicate what the normal state of
149 * the sync signals are. Sebastian Hesselbart kindly probed
150 * these signals on his board to determine their state.
151 *
152 * The non-inverted state of the sync signals is active high.
153 * Setting these bits makes the appropriate signal active low.
154 */
155 if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NCSYNC)
156 dumb_ctrl |= CFG_INV_CSYNC;
157 if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NHSYNC)
158 dumb_ctrl |= CFG_INV_HSYNC;
159 if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NVSYNC)
160 dumb_ctrl |= CFG_INV_VSYNC;
161
162 if (dcrtc->dumb_ctrl != dumb_ctrl) {
163 dcrtc->dumb_ctrl = dumb_ctrl;
164 writel_relaxed(dumb_ctrl, dcrtc->base + LCD_SPU_DUMB_CTRL);
165 }
166}
167
168void armada_drm_plane_calc_addrs(u32 *addrs, struct drm_framebuffer *fb,
169 int x, int y)
170{
171 u32 addr = drm_fb_obj(fb)->dev_addr;
172 u32 pixel_format = fb->pixel_format;
173 int num_planes = drm_format_num_planes(pixel_format);
174 int i;
175
176 if (num_planes > 3)
177 num_planes = 3;
178
179 for (i = 0; i < num_planes; i++)
180 addrs[i] = addr + fb->offsets[i] + y * fb->pitches[i] +
181 x * drm_format_plane_cpp(pixel_format, i);
182 for (; i < 3; i++)
183 addrs[i] = 0;
184}
185
186static unsigned armada_drm_crtc_calc_fb(struct drm_framebuffer *fb,
187 int x, int y, struct armada_regs *regs, bool interlaced)
188{
189 unsigned pitch = fb->pitches[0];
190 u32 addrs[3], addr_odd, addr_even;
191 unsigned i = 0;
192
193 DRM_DEBUG_DRIVER("pitch %u x %d y %d bpp %d\n",
194 pitch, x, y, fb->bits_per_pixel);
195
196 armada_drm_plane_calc_addrs(addrs, fb, x, y);
197
198 addr_odd = addr_even = addrs[0];
199
200 if (interlaced) {
201 addr_even += pitch;
202 pitch *= 2;
203 }
204
205 /* write offset, base, and pitch */
206 armada_reg_queue_set(regs, i, addr_odd, LCD_CFG_GRA_START_ADDR0);
207 armada_reg_queue_set(regs, i, addr_even, LCD_CFG_GRA_START_ADDR1);
208 armada_reg_queue_mod(regs, i, pitch, 0xffff, LCD_CFG_GRA_PITCH);
209
210 return i;
211}
212
213static void armada_drm_plane_work_run(struct armada_crtc *dcrtc,
214 struct drm_plane *plane)
215{
216 struct armada_plane *dplane = drm_to_armada_plane(plane);
217 struct armada_plane_work *work = xchg(&dplane->work, NULL);
218
219 /* Handle any pending frame work. */
220 if (work) {
221 work->fn(dcrtc, dplane, work);
222 drm_crtc_vblank_put(&dcrtc->crtc);
223 }
224
225 wake_up(&dplane->frame_wait);
226}
227
228int armada_drm_plane_work_queue(struct armada_crtc *dcrtc,
229 struct armada_plane *plane, struct armada_plane_work *work)
230{
231 int ret;
232
233 ret = drm_crtc_vblank_get(&dcrtc->crtc);
234 if (ret) {
235 DRM_ERROR("failed to acquire vblank counter\n");
236 return ret;
237 }
238
239 ret = cmpxchg(&plane->work, NULL, work) ? -EBUSY : 0;
240 if (ret)
241 drm_crtc_vblank_put(&dcrtc->crtc);
242
243 return ret;
244}
245
246int armada_drm_plane_work_wait(struct armada_plane *plane, long timeout)
247{
248 return wait_event_timeout(plane->frame_wait, !plane->work, timeout);
249}
250
251struct armada_plane_work *armada_drm_plane_work_cancel(
252 struct armada_crtc *dcrtc, struct armada_plane *plane)
253{
254 struct armada_plane_work *work = xchg(&plane->work, NULL);
255
256 if (work)
257 drm_crtc_vblank_put(&dcrtc->crtc);
258
259 return work;
260}
261
262static int armada_drm_crtc_queue_frame_work(struct armada_crtc *dcrtc,
263 struct armada_frame_work *work)
264{
265 struct armada_plane *plane = drm_to_armada_plane(dcrtc->crtc.primary);
266
267 return armada_drm_plane_work_queue(dcrtc, plane, &work->work);
268}
269
270static void armada_drm_crtc_complete_frame_work(struct armada_crtc *dcrtc,
271 struct armada_plane *plane, struct armada_plane_work *work)
272{
273 struct armada_frame_work *fwork = container_of(work, struct armada_frame_work, work);
274 struct drm_device *dev = dcrtc->crtc.dev;
275 unsigned long flags;
276
277 spin_lock_irqsave(&dcrtc->irq_lock, flags);
278 armada_drm_crtc_update_regs(dcrtc, fwork->regs);
279 spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
280
281 if (fwork->event) {
282 spin_lock_irqsave(&dev->event_lock, flags);
283 drm_crtc_send_vblank_event(&dcrtc->crtc, fwork->event);
284 spin_unlock_irqrestore(&dev->event_lock, flags);
285 }
286
287 /* Finally, queue the process-half of the cleanup. */
288 __armada_drm_queue_unref_work(dcrtc->crtc.dev, fwork->old_fb);
289 kfree(fwork);
290}
291
292static void armada_drm_crtc_finish_fb(struct armada_crtc *dcrtc,
293 struct drm_framebuffer *fb, bool force)
294{
295 struct armada_frame_work *work;
296
297 if (!fb)
298 return;
299
300 if (force) {
301 /* Display is disabled, so just drop the old fb */
302 drm_framebuffer_unreference(fb);
303 return;
304 }
305
306 work = kmalloc(sizeof(*work), GFP_KERNEL);
307 if (work) {
308 int i = 0;
309 work->work.fn = armada_drm_crtc_complete_frame_work;
310 work->event = NULL;
311 work->old_fb = fb;
312 armada_reg_queue_end(work->regs, i);
313
314 if (armada_drm_crtc_queue_frame_work(dcrtc, work) == 0)
315 return;
316
317 kfree(work);
318 }
319
320 /*
321 * Oops - just drop the reference immediately and hope for
322 * the best. The worst that will happen is the buffer gets
323 * reused before it has finished being displayed.
324 */
325 drm_framebuffer_unreference(fb);
326}
327
328static void armada_drm_vblank_off(struct armada_crtc *dcrtc)
329{
330 /*
331 * Tell the DRM core that vblank IRQs aren't going to happen for
332 * a while. This cleans up any pending vblank events for us.
333 */
334 drm_crtc_vblank_off(&dcrtc->crtc);
335 armada_drm_plane_work_run(dcrtc, dcrtc->crtc.primary);
336}
337
338void armada_drm_crtc_gamma_set(struct drm_crtc *crtc, u16 r, u16 g, u16 b,
339 int idx)
340{
341}
342
343void armada_drm_crtc_gamma_get(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
344 int idx)
345{
346}
347
348/* The mode_config.mutex will be held for this call */
349static void armada_drm_crtc_dpms(struct drm_crtc *crtc, int dpms)
350{
351 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
352
353 if (dpms_blanked(dcrtc->dpms) != dpms_blanked(dpms)) {
354 if (dpms_blanked(dpms))
355 armada_drm_vblank_off(dcrtc);
356 else if (!IS_ERR(dcrtc->clk))
357 WARN_ON(clk_prepare_enable(dcrtc->clk));
358 dcrtc->dpms = dpms;
359 armada_drm_crtc_update(dcrtc);
360 if (!dpms_blanked(dpms))
361 drm_crtc_vblank_on(&dcrtc->crtc);
362 else if (!IS_ERR(dcrtc->clk))
363 clk_disable_unprepare(dcrtc->clk);
364 } else if (dcrtc->dpms != dpms) {
365 dcrtc->dpms = dpms;
366 }
367}
368
369/*
370 * Prepare for a mode set. Turn off overlay to ensure that we don't end
371 * up with the overlay size being bigger than the active screen size.
372 * We rely upon X refreshing this state after the mode set has completed.
373 *
374 * The mode_config.mutex will be held for this call
375 */
376static void armada_drm_crtc_prepare(struct drm_crtc *crtc)
377{
378 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
379 struct drm_plane *plane;
380
381 /*
382 * If we have an overlay plane associated with this CRTC, disable
383 * it before the modeset to avoid its coordinates being outside
384 * the new mode parameters.
385 */
386 plane = dcrtc->plane;
387 if (plane)
388 drm_plane_force_disable(plane);
389}
390
391/* The mode_config.mutex will be held for this call */
392static void armada_drm_crtc_commit(struct drm_crtc *crtc)
393{
394 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
395
396 if (dcrtc->dpms != DRM_MODE_DPMS_ON) {
397 dcrtc->dpms = DRM_MODE_DPMS_ON;
398 armada_drm_crtc_update(dcrtc);
399 }
400}
401
402/* The mode_config.mutex will be held for this call */
403static bool armada_drm_crtc_mode_fixup(struct drm_crtc *crtc,
404 const struct drm_display_mode *mode, struct drm_display_mode *adj)
405{
406 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
407 int ret;
408
409 /* We can't do interlaced modes if we don't have the SPU_ADV_REG */
410 if (!dcrtc->variant->has_spu_adv_reg &&
411 adj->flags & DRM_MODE_FLAG_INTERLACE)
412 return false;
413
414 /* Check whether the display mode is possible */
415 ret = dcrtc->variant->compute_clock(dcrtc, adj, NULL);
416 if (ret)
417 return false;
418
419 return true;
420}
421
422static void armada_drm_crtc_irq(struct armada_crtc *dcrtc, u32 stat)
423{
424 void __iomem *base = dcrtc->base;
425 struct drm_plane *ovl_plane;
426
427 if (stat & DMA_FF_UNDERFLOW)
428 DRM_ERROR("video underflow on crtc %u\n", dcrtc->num);
429 if (stat & GRA_FF_UNDERFLOW)
430 DRM_ERROR("graphics underflow on crtc %u\n", dcrtc->num);
431
432 if (stat & VSYNC_IRQ)
433 drm_crtc_handle_vblank(&dcrtc->crtc);
434
435 spin_lock(&dcrtc->irq_lock);
436 ovl_plane = dcrtc->plane;
437 if (ovl_plane)
438 armada_drm_plane_work_run(dcrtc, ovl_plane);
439
440 if (stat & GRA_FRAME_IRQ && dcrtc->interlaced) {
441 int i = stat & GRA_FRAME_IRQ0 ? 0 : 1;
442 uint32_t val;
443
444 writel_relaxed(dcrtc->v[i].spu_v_porch, base + LCD_SPU_V_PORCH);
445 writel_relaxed(dcrtc->v[i].spu_v_h_total,
446 base + LCD_SPUT_V_H_TOTAL);
447
448 val = readl_relaxed(base + LCD_SPU_ADV_REG);
449 val &= ~(ADV_VSYNC_L_OFF | ADV_VSYNC_H_OFF | ADV_VSYNCOFFEN);
450 val |= dcrtc->v[i].spu_adv_reg;
451 writel_relaxed(val, base + LCD_SPU_ADV_REG);
452 }
453
454 if (stat & DUMB_FRAMEDONE && dcrtc->cursor_update) {
455 writel_relaxed(dcrtc->cursor_hw_pos,
456 base + LCD_SPU_HWC_OVSA_HPXL_VLN);
457 writel_relaxed(dcrtc->cursor_hw_sz,
458 base + LCD_SPU_HWC_HPXL_VLN);
459 armada_updatel(CFG_HWC_ENA,
460 CFG_HWC_ENA | CFG_HWC_1BITMOD | CFG_HWC_1BITENA,
461 base + LCD_SPU_DMA_CTRL0);
462 dcrtc->cursor_update = false;
463 armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
464 }
465
466 spin_unlock(&dcrtc->irq_lock);
467
468 if (stat & GRA_FRAME_IRQ)
469 armada_drm_plane_work_run(dcrtc, dcrtc->crtc.primary);
470}
471
472static irqreturn_t armada_drm_irq(int irq, void *arg)
473{
474 struct armada_crtc *dcrtc = arg;
475 u32 v, stat = readl_relaxed(dcrtc->base + LCD_SPU_IRQ_ISR);
476
477 /*
478 * This is rediculous - rather than writing bits to clear, we
479 * have to set the actual status register value. This is racy.
480 */
481 writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ISR);
482
483 trace_armada_drm_irq(&dcrtc->crtc, stat);
484
485 /* Mask out those interrupts we haven't enabled */
486 v = stat & dcrtc->irq_ena;
487
488 if (v & (VSYNC_IRQ|GRA_FRAME_IRQ|DUMB_FRAMEDONE)) {
489 armada_drm_crtc_irq(dcrtc, stat);
490 return IRQ_HANDLED;
491 }
492 return IRQ_NONE;
493}
494
495/* These are locked by dev->vbl_lock */
496void armada_drm_crtc_disable_irq(struct armada_crtc *dcrtc, u32 mask)
497{
498 if (dcrtc->irq_ena & mask) {
499 dcrtc->irq_ena &= ~mask;
500 writel(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA);
501 }
502}
503
504void armada_drm_crtc_enable_irq(struct armada_crtc *dcrtc, u32 mask)
505{
506 if ((dcrtc->irq_ena & mask) != mask) {
507 dcrtc->irq_ena |= mask;
508 writel(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA);
509 if (readl_relaxed(dcrtc->base + LCD_SPU_IRQ_ISR) & mask)
510 writel(0, dcrtc->base + LCD_SPU_IRQ_ISR);
511 }
512}
513
514static uint32_t armada_drm_crtc_calculate_csc(struct armada_crtc *dcrtc)
515{
516 struct drm_display_mode *adj = &dcrtc->crtc.mode;
517 uint32_t val = 0;
518
519 if (dcrtc->csc_yuv_mode == CSC_YUV_CCIR709)
520 val |= CFG_CSC_YUV_CCIR709;
521 if (dcrtc->csc_rgb_mode == CSC_RGB_STUDIO)
522 val |= CFG_CSC_RGB_STUDIO;
523
524 /*
525 * In auto mode, set the colorimetry, based upon the HDMI spec.
526 * 1280x720p, 1920x1080p and 1920x1080i use ITU709, others use
527 * ITU601. It may be more appropriate to set this depending on
528 * the source - but what if the graphic frame is YUV and the
529 * video frame is RGB?
530 */
531 if ((adj->hdisplay == 1280 && adj->vdisplay == 720 &&
532 !(adj->flags & DRM_MODE_FLAG_INTERLACE)) ||
533 (adj->hdisplay == 1920 && adj->vdisplay == 1080)) {
534 if (dcrtc->csc_yuv_mode == CSC_AUTO)
535 val |= CFG_CSC_YUV_CCIR709;
536 }
537
538 /*
539 * We assume we're connected to a TV-like device, so the YUV->RGB
540 * conversion should produce a limited range. We should set this
541 * depending on the connectors attached to this CRTC, and what
542 * kind of device they report being connected.
543 */
544 if (dcrtc->csc_rgb_mode == CSC_AUTO)
545 val |= CFG_CSC_RGB_STUDIO;
546
547 return val;
548}
549
550static void armada_drm_primary_set(struct drm_crtc *crtc,
551 struct drm_plane *plane, int x, int y)
552{
553 struct armada_plane_state *state = &drm_to_armada_plane(plane)->state;
554 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
555 struct armada_regs regs[8];
556 bool interlaced = dcrtc->interlaced;
557 unsigned i;
558 u32 ctrl0;
559
560 i = armada_drm_crtc_calc_fb(plane->fb, x, y, regs, interlaced);
561
562 armada_reg_queue_set(regs, i, state->dst_yx, LCD_SPU_GRA_OVSA_HPXL_VLN);
563 armada_reg_queue_set(regs, i, state->src_hw, LCD_SPU_GRA_HPXL_VLN);
564 armada_reg_queue_set(regs, i, state->dst_hw, LCD_SPU_GZM_HPXL_VLN);
565
566 ctrl0 = state->ctrl0;
567 if (interlaced)
568 ctrl0 |= CFG_GRA_FTOGGLE;
569
570 armada_reg_queue_mod(regs, i, ctrl0, CFG_GRAFORMAT |
571 CFG_GRA_MOD(CFG_SWAPRB | CFG_SWAPUV |
572 CFG_SWAPYU | CFG_YUV2RGB) |
573 CFG_PALETTE_ENA | CFG_GRA_FTOGGLE,
574 LCD_SPU_DMA_CTRL0);
575 armada_reg_queue_end(regs, i);
576 armada_drm_crtc_update_regs(dcrtc, regs);
577}
578
579/* The mode_config.mutex will be held for this call */
580static int armada_drm_crtc_mode_set(struct drm_crtc *crtc,
581 struct drm_display_mode *mode, struct drm_display_mode *adj,
582 int x, int y, struct drm_framebuffer *old_fb)
583{
584 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
585 struct armada_regs regs[17];
586 uint32_t lm, rm, tm, bm, val, sclk;
587 unsigned long flags;
588 unsigned i;
589 bool interlaced;
590
591 drm_framebuffer_reference(crtc->primary->fb);
592
593 interlaced = !!(adj->flags & DRM_MODE_FLAG_INTERLACE);
594
595 val = CFG_GRA_ENA | CFG_GRA_HSMOOTH;
596 val |= CFG_GRA_FMT(drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->fmt);
597 val |= CFG_GRA_MOD(drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->mod);
598
599 if (drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->fmt > CFG_420)
600 val |= CFG_PALETTE_ENA;
601
602 drm_to_armada_plane(crtc->primary)->state.ctrl0 = val;
603 drm_to_armada_plane(crtc->primary)->state.src_hw =
604 drm_to_armada_plane(crtc->primary)->state.dst_hw =
605 adj->crtc_vdisplay << 16 | adj->crtc_hdisplay;
606 drm_to_armada_plane(crtc->primary)->state.dst_yx = 0;
607
608 i = 0;
609 rm = adj->crtc_hsync_start - adj->crtc_hdisplay;
610 lm = adj->crtc_htotal - adj->crtc_hsync_end;
611 bm = adj->crtc_vsync_start - adj->crtc_vdisplay;
612 tm = adj->crtc_vtotal - adj->crtc_vsync_end;
613
614 DRM_DEBUG_DRIVER("H: %d %d %d %d lm %d rm %d\n",
615 adj->crtc_hdisplay,
616 adj->crtc_hsync_start,
617 adj->crtc_hsync_end,
618 adj->crtc_htotal, lm, rm);
619 DRM_DEBUG_DRIVER("V: %d %d %d %d tm %d bm %d\n",
620 adj->crtc_vdisplay,
621 adj->crtc_vsync_start,
622 adj->crtc_vsync_end,
623 adj->crtc_vtotal, tm, bm);
624
625 /* Wait for pending flips to complete */
626 armada_drm_plane_work_wait(drm_to_armada_plane(dcrtc->crtc.primary),
627 MAX_SCHEDULE_TIMEOUT);
628
629 drm_crtc_vblank_off(crtc);
630
631 val = dcrtc->dumb_ctrl & ~CFG_DUMB_ENA;
632 if (val != dcrtc->dumb_ctrl) {
633 dcrtc->dumb_ctrl = val;
634 writel_relaxed(val, dcrtc->base + LCD_SPU_DUMB_CTRL);
635 }
636
637 /*
638 * If we are blanked, we would have disabled the clock. Re-enable
639 * it so that compute_clock() does the right thing.
640 */
641 if (!IS_ERR(dcrtc->clk) && dpms_blanked(dcrtc->dpms))
642 WARN_ON(clk_prepare_enable(dcrtc->clk));
643
644 /* Now compute the divider for real */
645 dcrtc->variant->compute_clock(dcrtc, adj, &sclk);
646
647 /* Ensure graphic fifo is enabled */
648 armada_reg_queue_mod(regs, i, 0, CFG_PDWN64x66, LCD_SPU_SRAM_PARA1);
649 armada_reg_queue_set(regs, i, sclk, LCD_CFG_SCLK_DIV);
650
651 if (interlaced ^ dcrtc->interlaced) {
652 if (adj->flags & DRM_MODE_FLAG_INTERLACE)
653 drm_crtc_vblank_get(&dcrtc->crtc);
654 else
655 drm_crtc_vblank_put(&dcrtc->crtc);
656 dcrtc->interlaced = interlaced;
657 }
658
659 spin_lock_irqsave(&dcrtc->irq_lock, flags);
660
661 /* Even interlaced/progressive frame */
662 dcrtc->v[1].spu_v_h_total = adj->crtc_vtotal << 16 |
663 adj->crtc_htotal;
664 dcrtc->v[1].spu_v_porch = tm << 16 | bm;
665 val = adj->crtc_hsync_start;
666 dcrtc->v[1].spu_adv_reg = val << 20 | val | ADV_VSYNCOFFEN |
667 dcrtc->variant->spu_adv_reg;
668
669 if (interlaced) {
670 /* Odd interlaced frame */
671 dcrtc->v[0].spu_v_h_total = dcrtc->v[1].spu_v_h_total +
672 (1 << 16);
673 dcrtc->v[0].spu_v_porch = dcrtc->v[1].spu_v_porch + 1;
674 val = adj->crtc_hsync_start - adj->crtc_htotal / 2;
675 dcrtc->v[0].spu_adv_reg = val << 20 | val | ADV_VSYNCOFFEN |
676 dcrtc->variant->spu_adv_reg;
677 } else {
678 dcrtc->v[0] = dcrtc->v[1];
679 }
680
681 val = adj->crtc_vdisplay << 16 | adj->crtc_hdisplay;
682
683 armada_reg_queue_set(regs, i, val, LCD_SPU_V_H_ACTIVE);
684 armada_reg_queue_set(regs, i, (lm << 16) | rm, LCD_SPU_H_PORCH);
685 armada_reg_queue_set(regs, i, dcrtc->v[0].spu_v_porch, LCD_SPU_V_PORCH);
686 armada_reg_queue_set(regs, i, dcrtc->v[0].spu_v_h_total,
687 LCD_SPUT_V_H_TOTAL);
688
689 if (dcrtc->variant->has_spu_adv_reg) {
690 armada_reg_queue_mod(regs, i, dcrtc->v[0].spu_adv_reg,
691 ADV_VSYNC_L_OFF | ADV_VSYNC_H_OFF |
692 ADV_VSYNCOFFEN, LCD_SPU_ADV_REG);
693 }
694
695 val = adj->flags & DRM_MODE_FLAG_NVSYNC ? CFG_VSYNC_INV : 0;
696 armada_reg_queue_mod(regs, i, val, CFG_VSYNC_INV, LCD_SPU_DMA_CTRL1);
697
698 val = dcrtc->spu_iopad_ctrl | armada_drm_crtc_calculate_csc(dcrtc);
699 armada_reg_queue_set(regs, i, val, LCD_SPU_IOPAD_CONTROL);
700 armada_reg_queue_end(regs, i);
701
702 armada_drm_crtc_update_regs(dcrtc, regs);
703
704 armada_drm_primary_set(crtc, crtc->primary, x, y);
705 spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
706
707 armada_drm_crtc_update(dcrtc);
708
709 drm_crtc_vblank_on(crtc);
710 armada_drm_crtc_finish_fb(dcrtc, old_fb, dpms_blanked(dcrtc->dpms));
711
712 return 0;
713}
714
715/* The mode_config.mutex will be held for this call */
716static int armada_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
717 struct drm_framebuffer *old_fb)
718{
719 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
720 struct armada_regs regs[4];
721 unsigned i;
722
723 i = armada_drm_crtc_calc_fb(crtc->primary->fb, crtc->x, crtc->y, regs,
724 dcrtc->interlaced);
725 armada_reg_queue_end(regs, i);
726
727 /* Wait for pending flips to complete */
728 armada_drm_plane_work_wait(drm_to_armada_plane(dcrtc->crtc.primary),
729 MAX_SCHEDULE_TIMEOUT);
730
731 /* Take a reference to the new fb as we're using it */
732 drm_framebuffer_reference(crtc->primary->fb);
733
734 /* Update the base in the CRTC */
735 armada_drm_crtc_update_regs(dcrtc, regs);
736
737 /* Drop our previously held reference */
738 armada_drm_crtc_finish_fb(dcrtc, old_fb, dpms_blanked(dcrtc->dpms));
739
740 return 0;
741}
742
743void armada_drm_crtc_plane_disable(struct armada_crtc *dcrtc,
744 struct drm_plane *plane)
745{
746 u32 sram_para1, dma_ctrl0_mask;
747
748 /*
749 * Drop our reference on any framebuffer attached to this plane.
750 * We don't need to NULL this out as drm_plane_force_disable(),
751 * and __setplane_internal() will do so for an overlay plane, and
752 * __drm_helper_disable_unused_functions() will do so for the
753 * primary plane.
754 */
755 if (plane->fb)
756 drm_framebuffer_unreference(plane->fb);
757
758 /* Power down the Y/U/V FIFOs */
759 sram_para1 = CFG_PDWN16x66 | CFG_PDWN32x66;
760
761 /* Power down most RAMs and FIFOs if this is the primary plane */
762 if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
763 sram_para1 |= CFG_PDWN256x32 | CFG_PDWN256x24 | CFG_PDWN256x8 |
764 CFG_PDWN32x32 | CFG_PDWN64x66;
765 dma_ctrl0_mask = CFG_GRA_ENA;
766 } else {
767 dma_ctrl0_mask = CFG_DMA_ENA;
768 }
769
770 spin_lock_irq(&dcrtc->irq_lock);
771 armada_updatel(0, dma_ctrl0_mask, dcrtc->base + LCD_SPU_DMA_CTRL0);
772 spin_unlock_irq(&dcrtc->irq_lock);
773
774 armada_updatel(sram_para1, 0, dcrtc->base + LCD_SPU_SRAM_PARA1);
775}
776
777/* The mode_config.mutex will be held for this call */
778static void armada_drm_crtc_disable(struct drm_crtc *crtc)
779{
780 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
781
782 armada_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
783 armada_drm_crtc_plane_disable(dcrtc, crtc->primary);
784}
785
786static const struct drm_crtc_helper_funcs armada_crtc_helper_funcs = {
787 .dpms = armada_drm_crtc_dpms,
788 .prepare = armada_drm_crtc_prepare,
789 .commit = armada_drm_crtc_commit,
790 .mode_fixup = armada_drm_crtc_mode_fixup,
791 .mode_set = armada_drm_crtc_mode_set,
792 .mode_set_base = armada_drm_crtc_mode_set_base,
793 .disable = armada_drm_crtc_disable,
794};
795
796static void armada_load_cursor_argb(void __iomem *base, uint32_t *pix,
797 unsigned stride, unsigned width, unsigned height)
798{
799 uint32_t addr;
800 unsigned y;
801
802 addr = SRAM_HWC32_RAM1;
803 for (y = 0; y < height; y++) {
804 uint32_t *p = &pix[y * stride];
805 unsigned x;
806
807 for (x = 0; x < width; x++, p++) {
808 uint32_t val = *p;
809
810 val = (val & 0xff00ff00) |
811 (val & 0x000000ff) << 16 |
812 (val & 0x00ff0000) >> 16;
813
814 writel_relaxed(val,
815 base + LCD_SPU_SRAM_WRDAT);
816 writel_relaxed(addr | SRAM_WRITE,
817 base + LCD_SPU_SRAM_CTRL);
818 readl_relaxed(base + LCD_SPU_HWC_OVSA_HPXL_VLN);
819 addr += 1;
820 if ((addr & 0x00ff) == 0)
821 addr += 0xf00;
822 if ((addr & 0x30ff) == 0)
823 addr = SRAM_HWC32_RAM2;
824 }
825 }
826}
827
828static void armada_drm_crtc_cursor_tran(void __iomem *base)
829{
830 unsigned addr;
831
832 for (addr = 0; addr < 256; addr++) {
833 /* write the default value */
834 writel_relaxed(0x55555555, base + LCD_SPU_SRAM_WRDAT);
835 writel_relaxed(addr | SRAM_WRITE | SRAM_HWC32_TRAN,
836 base + LCD_SPU_SRAM_CTRL);
837 }
838}
839
840static int armada_drm_crtc_cursor_update(struct armada_crtc *dcrtc, bool reload)
841{
842 uint32_t xoff, xscr, w = dcrtc->cursor_w, s;
843 uint32_t yoff, yscr, h = dcrtc->cursor_h;
844 uint32_t para1;
845
846 /*
847 * Calculate the visible width and height of the cursor,
848 * screen position, and the position in the cursor bitmap.
849 */
850 if (dcrtc->cursor_x < 0) {
851 xoff = -dcrtc->cursor_x;
852 xscr = 0;
853 w -= min(xoff, w);
854 } else if (dcrtc->cursor_x + w > dcrtc->crtc.mode.hdisplay) {
855 xoff = 0;
856 xscr = dcrtc->cursor_x;
857 w = max_t(int, dcrtc->crtc.mode.hdisplay - dcrtc->cursor_x, 0);
858 } else {
859 xoff = 0;
860 xscr = dcrtc->cursor_x;
861 }
862
863 if (dcrtc->cursor_y < 0) {
864 yoff = -dcrtc->cursor_y;
865 yscr = 0;
866 h -= min(yoff, h);
867 } else if (dcrtc->cursor_y + h > dcrtc->crtc.mode.vdisplay) {
868 yoff = 0;
869 yscr = dcrtc->cursor_y;
870 h = max_t(int, dcrtc->crtc.mode.vdisplay - dcrtc->cursor_y, 0);
871 } else {
872 yoff = 0;
873 yscr = dcrtc->cursor_y;
874 }
875
876 /* On interlaced modes, the vertical cursor size must be halved */
877 s = dcrtc->cursor_w;
878 if (dcrtc->interlaced) {
879 s *= 2;
880 yscr /= 2;
881 h /= 2;
882 }
883
884 if (!dcrtc->cursor_obj || !h || !w) {
885 spin_lock_irq(&dcrtc->irq_lock);
886 armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
887 dcrtc->cursor_update = false;
888 armada_updatel(0, CFG_HWC_ENA, dcrtc->base + LCD_SPU_DMA_CTRL0);
889 spin_unlock_irq(&dcrtc->irq_lock);
890 return 0;
891 }
892
893 para1 = readl_relaxed(dcrtc->base + LCD_SPU_SRAM_PARA1);
894 armada_updatel(CFG_CSB_256x32, CFG_CSB_256x32 | CFG_PDWN256x32,
895 dcrtc->base + LCD_SPU_SRAM_PARA1);
896
897 /*
898 * Initialize the transparency if the SRAM was powered down.
899 * We must also reload the cursor data as well.
900 */
901 if (!(para1 & CFG_CSB_256x32)) {
902 armada_drm_crtc_cursor_tran(dcrtc->base);
903 reload = true;
904 }
905
906 if (dcrtc->cursor_hw_sz != (h << 16 | w)) {
907 spin_lock_irq(&dcrtc->irq_lock);
908 armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
909 dcrtc->cursor_update = false;
910 armada_updatel(0, CFG_HWC_ENA, dcrtc->base + LCD_SPU_DMA_CTRL0);
911 spin_unlock_irq(&dcrtc->irq_lock);
912 reload = true;
913 }
914 if (reload) {
915 struct armada_gem_object *obj = dcrtc->cursor_obj;
916 uint32_t *pix;
917 /* Set the top-left corner of the cursor image */
918 pix = obj->addr;
919 pix += yoff * s + xoff;
920 armada_load_cursor_argb(dcrtc->base, pix, s, w, h);
921 }
922
923 /* Reload the cursor position, size and enable in the IRQ handler */
924 spin_lock_irq(&dcrtc->irq_lock);
925 dcrtc->cursor_hw_pos = yscr << 16 | xscr;
926 dcrtc->cursor_hw_sz = h << 16 | w;
927 dcrtc->cursor_update = true;
928 armada_drm_crtc_enable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
929 spin_unlock_irq(&dcrtc->irq_lock);
930
931 return 0;
932}
933
934static void cursor_update(void *data)
935{
936 armada_drm_crtc_cursor_update(data, true);
937}
938
939static int armada_drm_crtc_cursor_set(struct drm_crtc *crtc,
940 struct drm_file *file, uint32_t handle, uint32_t w, uint32_t h)
941{
942 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
943 struct armada_gem_object *obj = NULL;
944 int ret;
945
946 /* If no cursor support, replicate drm's return value */
947 if (!dcrtc->variant->has_spu_adv_reg)
948 return -ENXIO;
949
950 if (handle && w > 0 && h > 0) {
951 /* maximum size is 64x32 or 32x64 */
952 if (w > 64 || h > 64 || (w > 32 && h > 32))
953 return -ENOMEM;
954
955 obj = armada_gem_object_lookup(file, handle);
956 if (!obj)
957 return -ENOENT;
958
959 /* Must be a kernel-mapped object */
960 if (!obj->addr) {
961 drm_gem_object_unreference_unlocked(&obj->obj);
962 return -EINVAL;
963 }
964
965 if (obj->obj.size < w * h * 4) {
966 DRM_ERROR("buffer is too small\n");
967 drm_gem_object_unreference_unlocked(&obj->obj);
968 return -ENOMEM;
969 }
970 }
971
972 if (dcrtc->cursor_obj) {
973 dcrtc->cursor_obj->update = NULL;
974 dcrtc->cursor_obj->update_data = NULL;
975 drm_gem_object_unreference_unlocked(&dcrtc->cursor_obj->obj);
976 }
977 dcrtc->cursor_obj = obj;
978 dcrtc->cursor_w = w;
979 dcrtc->cursor_h = h;
980 ret = armada_drm_crtc_cursor_update(dcrtc, true);
981 if (obj) {
982 obj->update_data = dcrtc;
983 obj->update = cursor_update;
984 }
985
986 return ret;
987}
988
989static int armada_drm_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
990{
991 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
992 int ret;
993
994 /* If no cursor support, replicate drm's return value */
995 if (!dcrtc->variant->has_spu_adv_reg)
996 return -EFAULT;
997
998 dcrtc->cursor_x = x;
999 dcrtc->cursor_y = y;
1000 ret = armada_drm_crtc_cursor_update(dcrtc, false);
1001
1002 return ret;
1003}
1004
1005static void armada_drm_crtc_destroy(struct drm_crtc *crtc)
1006{
1007 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
1008 struct armada_private *priv = crtc->dev->dev_private;
1009
1010 if (dcrtc->cursor_obj)
1011 drm_gem_object_unreference_unlocked(&dcrtc->cursor_obj->obj);
1012
1013 priv->dcrtc[dcrtc->num] = NULL;
1014 drm_crtc_cleanup(&dcrtc->crtc);
1015
1016 if (!IS_ERR(dcrtc->clk))
1017 clk_disable_unprepare(dcrtc->clk);
1018
1019 writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ENA);
1020
1021 of_node_put(dcrtc->crtc.port);
1022
1023 kfree(dcrtc);
1024}
1025
1026/*
1027 * The mode_config lock is held here, to prevent races between this
1028 * and a mode_set.
1029 */
1030static int armada_drm_crtc_page_flip(struct drm_crtc *crtc,
1031 struct drm_framebuffer *fb, struct drm_pending_vblank_event *event, uint32_t page_flip_flags)
1032{
1033 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
1034 struct armada_frame_work *work;
1035 unsigned i;
1036 int ret;
1037
1038 /* We don't support changing the pixel format */
1039 if (fb->pixel_format != crtc->primary->fb->pixel_format)
1040 return -EINVAL;
1041
1042 work = kmalloc(sizeof(*work), GFP_KERNEL);
1043 if (!work)
1044 return -ENOMEM;
1045
1046 work->work.fn = armada_drm_crtc_complete_frame_work;
1047 work->event = event;
1048 work->old_fb = dcrtc->crtc.primary->fb;
1049
1050 i = armada_drm_crtc_calc_fb(fb, crtc->x, crtc->y, work->regs,
1051 dcrtc->interlaced);
1052 armada_reg_queue_end(work->regs, i);
1053
1054 /*
1055 * Ensure that we hold a reference on the new framebuffer.
1056 * This has to match the behaviour in mode_set.
1057 */
1058 drm_framebuffer_reference(fb);
1059
1060 ret = armada_drm_crtc_queue_frame_work(dcrtc, work);
1061 if (ret) {
1062 /* Undo our reference above */
1063 drm_framebuffer_unreference(fb);
1064 kfree(work);
1065 return ret;
1066 }
1067
1068 /*
1069 * Don't take a reference on the new framebuffer;
1070 * drm_mode_page_flip_ioctl() has already grabbed a reference and
1071 * will _not_ drop that reference on successful return from this
1072 * function. Simply mark this new framebuffer as the current one.
1073 */
1074 dcrtc->crtc.primary->fb = fb;
1075
1076 /*
1077 * Finally, if the display is blanked, we won't receive an
1078 * interrupt, so complete it now.
1079 */
1080 if (dpms_blanked(dcrtc->dpms))
1081 armada_drm_plane_work_run(dcrtc, dcrtc->crtc.primary);
1082
1083 return 0;
1084}
1085
1086static int
1087armada_drm_crtc_set_property(struct drm_crtc *crtc,
1088 struct drm_property *property, uint64_t val)
1089{
1090 struct armada_private *priv = crtc->dev->dev_private;
1091 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
1092 bool update_csc = false;
1093
1094 if (property == priv->csc_yuv_prop) {
1095 dcrtc->csc_yuv_mode = val;
1096 update_csc = true;
1097 } else if (property == priv->csc_rgb_prop) {
1098 dcrtc->csc_rgb_mode = val;
1099 update_csc = true;
1100 }
1101
1102 if (update_csc) {
1103 uint32_t val;
1104
1105 val = dcrtc->spu_iopad_ctrl |
1106 armada_drm_crtc_calculate_csc(dcrtc);
1107 writel_relaxed(val, dcrtc->base + LCD_SPU_IOPAD_CONTROL);
1108 }
1109
1110 return 0;
1111}
1112
1113static const struct drm_crtc_funcs armada_crtc_funcs = {
1114 .cursor_set = armada_drm_crtc_cursor_set,
1115 .cursor_move = armada_drm_crtc_cursor_move,
1116 .destroy = armada_drm_crtc_destroy,
1117 .set_config = drm_crtc_helper_set_config,
1118 .page_flip = armada_drm_crtc_page_flip,
1119 .set_property = armada_drm_crtc_set_property,
1120};
1121
1122static const struct drm_plane_funcs armada_primary_plane_funcs = {
1123 .update_plane = drm_primary_helper_update,
1124 .disable_plane = drm_primary_helper_disable,
1125 .destroy = drm_primary_helper_destroy,
1126};
1127
1128int armada_drm_plane_init(struct armada_plane *plane)
1129{
1130 init_waitqueue_head(&plane->frame_wait);
1131
1132 return 0;
1133}
1134
1135static struct drm_prop_enum_list armada_drm_csc_yuv_enum_list[] = {
1136 { CSC_AUTO, "Auto" },
1137 { CSC_YUV_CCIR601, "CCIR601" },
1138 { CSC_YUV_CCIR709, "CCIR709" },
1139};
1140
1141static struct drm_prop_enum_list armada_drm_csc_rgb_enum_list[] = {
1142 { CSC_AUTO, "Auto" },
1143 { CSC_RGB_COMPUTER, "Computer system" },
1144 { CSC_RGB_STUDIO, "Studio" },
1145};
1146
1147static int armada_drm_crtc_create_properties(struct drm_device *dev)
1148{
1149 struct armada_private *priv = dev->dev_private;
1150
1151 if (priv->csc_yuv_prop)
1152 return 0;
1153
1154 priv->csc_yuv_prop = drm_property_create_enum(dev, 0,
1155 "CSC_YUV", armada_drm_csc_yuv_enum_list,
1156 ARRAY_SIZE(armada_drm_csc_yuv_enum_list));
1157 priv->csc_rgb_prop = drm_property_create_enum(dev, 0,
1158 "CSC_RGB", armada_drm_csc_rgb_enum_list,
1159 ARRAY_SIZE(armada_drm_csc_rgb_enum_list));
1160
1161 if (!priv->csc_yuv_prop || !priv->csc_rgb_prop)
1162 return -ENOMEM;
1163
1164 return 0;
1165}
1166
1167static int armada_drm_crtc_create(struct drm_device *drm, struct device *dev,
1168 struct resource *res, int irq, const struct armada_variant *variant,
1169 struct device_node *port)
1170{
1171 struct armada_private *priv = drm->dev_private;
1172 struct armada_crtc *dcrtc;
1173 struct armada_plane *primary;
1174 void __iomem *base;
1175 int ret;
1176
1177 ret = armada_drm_crtc_create_properties(drm);
1178 if (ret)
1179 return ret;
1180
1181 base = devm_ioremap_resource(dev, res);
1182 if (IS_ERR(base))
1183 return PTR_ERR(base);
1184
1185 dcrtc = kzalloc(sizeof(*dcrtc), GFP_KERNEL);
1186 if (!dcrtc) {
1187 DRM_ERROR("failed to allocate Armada crtc\n");
1188 return -ENOMEM;
1189 }
1190
1191 if (dev != drm->dev)
1192 dev_set_drvdata(dev, dcrtc);
1193
1194 dcrtc->variant = variant;
1195 dcrtc->base = base;
1196 dcrtc->num = drm->mode_config.num_crtc;
1197 dcrtc->clk = ERR_PTR(-EINVAL);
1198 dcrtc->csc_yuv_mode = CSC_AUTO;
1199 dcrtc->csc_rgb_mode = CSC_AUTO;
1200 dcrtc->cfg_dumb_ctrl = DUMB24_RGB888_0;
1201 dcrtc->spu_iopad_ctrl = CFG_VSCALE_LN_EN | CFG_IOPAD_DUMB24;
1202 spin_lock_init(&dcrtc->irq_lock);
1203 dcrtc->irq_ena = CLEAN_SPU_IRQ_ISR;
1204
1205 /* Initialize some registers which we don't otherwise set */
1206 writel_relaxed(0x00000001, dcrtc->base + LCD_CFG_SCLK_DIV);
1207 writel_relaxed(0x00000000, dcrtc->base + LCD_SPU_BLANKCOLOR);
1208 writel_relaxed(dcrtc->spu_iopad_ctrl,
1209 dcrtc->base + LCD_SPU_IOPAD_CONTROL);
1210 writel_relaxed(0x00000000, dcrtc->base + LCD_SPU_SRAM_PARA0);
1211 writel_relaxed(CFG_PDWN256x32 | CFG_PDWN256x24 | CFG_PDWN256x8 |
1212 CFG_PDWN32x32 | CFG_PDWN16x66 | CFG_PDWN32x66 |
1213 CFG_PDWN64x66, dcrtc->base + LCD_SPU_SRAM_PARA1);
1214 writel_relaxed(0x2032ff81, dcrtc->base + LCD_SPU_DMA_CTRL1);
1215 writel_relaxed(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA);
1216 writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ISR);
1217
1218 ret = devm_request_irq(dev, irq, armada_drm_irq, 0, "armada_drm_crtc",
1219 dcrtc);
1220 if (ret < 0) {
1221 kfree(dcrtc);
1222 return ret;
1223 }
1224
1225 if (dcrtc->variant->init) {
1226 ret = dcrtc->variant->init(dcrtc, dev);
1227 if (ret) {
1228 kfree(dcrtc);
1229 return ret;
1230 }
1231 }
1232
1233 /* Ensure AXI pipeline is enabled */
1234 armada_updatel(CFG_ARBFAST_ENA, 0, dcrtc->base + LCD_SPU_DMA_CTRL0);
1235
1236 priv->dcrtc[dcrtc->num] = dcrtc;
1237
1238 dcrtc->crtc.port = port;
1239
1240 primary = kzalloc(sizeof(*primary), GFP_KERNEL);
1241 if (!primary)
1242 return -ENOMEM;
1243
1244 ret = armada_drm_plane_init(primary);
1245 if (ret) {
1246 kfree(primary);
1247 return ret;
1248 }
1249
1250 ret = drm_universal_plane_init(drm, &primary->base, 0,
1251 &armada_primary_plane_funcs,
1252 armada_primary_formats,
1253 ARRAY_SIZE(armada_primary_formats),
1254 DRM_PLANE_TYPE_PRIMARY, NULL);
1255 if (ret) {
1256 kfree(primary);
1257 return ret;
1258 }
1259
1260 ret = drm_crtc_init_with_planes(drm, &dcrtc->crtc, &primary->base, NULL,
1261 &armada_crtc_funcs, NULL);
1262 if (ret)
1263 goto err_crtc_init;
1264
1265 drm_crtc_helper_add(&dcrtc->crtc, &armada_crtc_helper_funcs);
1266
1267 drm_object_attach_property(&dcrtc->crtc.base, priv->csc_yuv_prop,
1268 dcrtc->csc_yuv_mode);
1269 drm_object_attach_property(&dcrtc->crtc.base, priv->csc_rgb_prop,
1270 dcrtc->csc_rgb_mode);
1271
1272 return armada_overlay_plane_create(drm, 1 << dcrtc->num);
1273
1274err_crtc_init:
1275 primary->base.funcs->destroy(&primary->base);
1276 return ret;
1277}
1278
1279static int
1280armada_lcd_bind(struct device *dev, struct device *master, void *data)
1281{
1282 struct platform_device *pdev = to_platform_device(dev);
1283 struct drm_device *drm = data;
1284 struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1285 int irq = platform_get_irq(pdev, 0);
1286 const struct armada_variant *variant;
1287 struct device_node *port = NULL;
1288
1289 if (irq < 0)
1290 return irq;
1291
1292 if (!dev->of_node) {
1293 const struct platform_device_id *id;
1294
1295 id = platform_get_device_id(pdev);
1296 if (!id)
1297 return -ENXIO;
1298
1299 variant = (const struct armada_variant *)id->driver_data;
1300 } else {
1301 const struct of_device_id *match;
1302 struct device_node *np, *parent = dev->of_node;
1303
1304 match = of_match_device(dev->driver->of_match_table, dev);
1305 if (!match)
1306 return -ENXIO;
1307
1308 np = of_get_child_by_name(parent, "ports");
1309 if (np)
1310 parent = np;
1311 port = of_get_child_by_name(parent, "port");
1312 of_node_put(np);
1313 if (!port) {
1314 dev_err(dev, "no port node found in %s\n",
1315 parent->full_name);
1316 return -ENXIO;
1317 }
1318
1319 variant = match->data;
1320 }
1321
1322 return armada_drm_crtc_create(drm, dev, res, irq, variant, port);
1323}
1324
1325static void
1326armada_lcd_unbind(struct device *dev, struct device *master, void *data)
1327{
1328 struct armada_crtc *dcrtc = dev_get_drvdata(dev);
1329
1330 armada_drm_crtc_destroy(&dcrtc->crtc);
1331}
1332
1333static const struct component_ops armada_lcd_ops = {
1334 .bind = armada_lcd_bind,
1335 .unbind = armada_lcd_unbind,
1336};
1337
1338static int armada_lcd_probe(struct platform_device *pdev)
1339{
1340 return component_add(&pdev->dev, &armada_lcd_ops);
1341}
1342
1343static int armada_lcd_remove(struct platform_device *pdev)
1344{
1345 component_del(&pdev->dev, &armada_lcd_ops);
1346 return 0;
1347}
1348
1349static struct of_device_id armada_lcd_of_match[] = {
1350 {
1351 .compatible = "marvell,dove-lcd",
1352 .data = &armada510_ops,
1353 },
1354 {}
1355};
1356MODULE_DEVICE_TABLE(of, armada_lcd_of_match);
1357
1358static const struct platform_device_id armada_lcd_platform_ids[] = {
1359 {
1360 .name = "armada-lcd",
1361 .driver_data = (unsigned long)&armada510_ops,
1362 }, {
1363 .name = "armada-510-lcd",
1364 .driver_data = (unsigned long)&armada510_ops,
1365 },
1366 { },
1367};
1368MODULE_DEVICE_TABLE(platform, armada_lcd_platform_ids);
1369
1370struct platform_driver armada_lcd_platform_driver = {
1371 .probe = armada_lcd_probe,
1372 .remove = armada_lcd_remove,
1373 .driver = {
1374 .name = "armada-lcd",
1375 .owner = THIS_MODULE,
1376 .of_match_table = armada_lcd_of_match,
1377 },
1378 .id_table = armada_lcd_platform_ids,
1379};