2 * Copyright (C) 2012 Russell King
3 * Rewritten from the dovefb driver, and Armada510 manuals.
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.
11 #include <drm/drm_crtc_helper.h>
12 #include "armada_crtc.h"
13 #include "armada_drm.h"
14 #include "armada_fb.h"
15 #include "armada_gem.h"
16 #include "armada_hw.h"
18 struct armada_frame_work {
19 struct drm_pending_vblank_event *event;
20 struct armada_regs regs[4];
21 struct drm_framebuffer *old_fb;
33 * A note about interlacing. Let's consider HDMI 1920x1080i.
34 * The timing parameters we have from X are:
35 * Hact HsyA HsyI Htot Vact VsyA VsyI Vtot
36 * 1920 2448 2492 2640 1080 1084 1094 1125
37 * Which get translated to:
38 * Hact HsyA HsyI Htot Vact VsyA VsyI Vtot
39 * 1920 2448 2492 2640 540 542 547 562
41 * This is how it is defined by CEA-861-D - line and pixel numbers are
42 * referenced to the rising edge of VSYNC and HSYNC. Total clocks per
43 * line: 2640. The odd frame, the first active line is at line 21, and
44 * the even frame, the first active line is 584.
46 * LN: 560 561 562 563 567 568 569
47 * DE: ~~~|____________________________//__________________________
48 * HSYNC: ____|~|_____|~|_____|~|_____|~|_//__|~|_____|~|_____|~|_____
49 * VSYNC: _________________________|~~~~~~//~~~~~~~~~~~~~~~|__________
50 * 22 blanking lines. VSYNC at 1320 (referenced to the HSYNC rising edge).
52 * LN: 1123 1124 1125 1 5 6 7
53 * DE: ~~~|____________________________//__________________________
54 * HSYNC: ____|~|_____|~|_____|~|_____|~|_//__|~|_____|~|_____|~|_____
55 * VSYNC: ____________________|~~~~~~~~~~~//~~~~~~~~~~|_______________
58 * The Armada LCD Controller line and pixel numbers are, like X timings,
59 * referenced to the top left of the active frame.
61 * So, translating these to our LCD controller:
62 * Odd frame, 563 total lines, VSYNC at line 543-548, pixel 1128.
63 * Even frame, 562 total lines, VSYNC at line 542-547, pixel 2448.
64 * Note: Vsync front porch remains constant!
67 * vtotal = mode->crtc_vtotal + 1;
68 * vbackporch = mode->crtc_vsync_start - mode->crtc_vdisplay + 1;
69 * vhorizpos = mode->crtc_hsync_start - mode->crtc_htotal / 2
71 * vtotal = mode->crtc_vtotal;
72 * vbackporch = mode->crtc_vsync_start - mode->crtc_vdisplay;
73 * vhorizpos = mode->crtc_hsync_start;
75 * vfrontporch = mode->crtc_vtotal - mode->crtc_vsync_end;
77 * So, we need to reprogram these registers on each vsync event:
78 * LCD_SPU_V_PORCH, LCD_SPU_ADV_REG, LCD_SPUT_V_H_TOTAL
80 * Note: we do not use the frame done interrupts because these appear
81 * to happen too early, and lead to jitter on the display (presumably
82 * they occur at the end of the last active line, before the vsync back
83 * porch, which we're reprogramming.)
87 armada_drm_crtc_update_regs(struct armada_crtc *dcrtc, struct armada_regs *regs)
89 while (regs->offset != ~0) {
90 void __iomem *reg = dcrtc->base + regs->offset;
95 val &= readl_relaxed(reg);
96 writel_relaxed(val | regs->val, reg);
101 #define dpms_blanked(dpms) ((dpms) != DRM_MODE_DPMS_ON)
103 static void armada_drm_crtc_update(struct armada_crtc *dcrtc)
107 dumb_ctrl = dcrtc->cfg_dumb_ctrl;
109 if (!dpms_blanked(dcrtc->dpms))
110 dumb_ctrl |= CFG_DUMB_ENA;
113 * When the dumb interface isn't in DUMB24_RGB888_0 mode, it might
114 * be using SPI or GPIO. If we set this to DUMB_BLANK, we will
115 * force LCD_D[23:0] to output blank color, overriding the GPIO or
116 * SPI usage. So leave it as-is unless in DUMB24_RGB888_0 mode.
118 if (dpms_blanked(dcrtc->dpms) &&
119 (dumb_ctrl & DUMB_MASK) == DUMB24_RGB888_0) {
120 dumb_ctrl &= ~DUMB_MASK;
121 dumb_ctrl |= DUMB_BLANK;
125 * The documentation doesn't indicate what the normal state of
126 * the sync signals are. Sebastian Hesselbart kindly probed
127 * these signals on his board to determine their state.
129 * The non-inverted state of the sync signals is active high.
130 * Setting these bits makes the appropriate signal active low.
132 if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NCSYNC)
133 dumb_ctrl |= CFG_INV_CSYNC;
134 if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NHSYNC)
135 dumb_ctrl |= CFG_INV_HSYNC;
136 if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NVSYNC)
137 dumb_ctrl |= CFG_INV_VSYNC;
139 if (dcrtc->dumb_ctrl != dumb_ctrl) {
140 dcrtc->dumb_ctrl = dumb_ctrl;
141 writel_relaxed(dumb_ctrl, dcrtc->base + LCD_SPU_DUMB_CTRL);
145 static unsigned armada_drm_crtc_calc_fb(struct drm_framebuffer *fb,
146 int x, int y, struct armada_regs *regs, bool interlaced)
148 struct armada_gem_object *obj = drm_fb_obj(fb);
149 unsigned pitch = fb->pitches[0];
150 unsigned offset = y * pitch + x * fb->bits_per_pixel / 8;
151 uint32_t addr_odd, addr_even;
154 DRM_DEBUG_DRIVER("pitch %u x %d y %d bpp %d\n",
155 pitch, x, y, fb->bits_per_pixel);
157 addr_odd = addr_even = obj->dev_addr + offset;
164 /* write offset, base, and pitch */
165 armada_reg_queue_set(regs, i, addr_odd, LCD_CFG_GRA_START_ADDR0);
166 armada_reg_queue_set(regs, i, addr_even, LCD_CFG_GRA_START_ADDR1);
167 armada_reg_queue_mod(regs, i, pitch, 0xffff, LCD_CFG_GRA_PITCH);
172 static int armada_drm_crtc_queue_frame_work(struct armada_crtc *dcrtc,
173 struct armada_frame_work *work)
175 struct drm_device *dev = dcrtc->crtc.dev;
179 ret = drm_vblank_get(dev, dcrtc->num);
181 DRM_ERROR("failed to acquire vblank counter\n");
185 spin_lock_irqsave(&dev->event_lock, flags);
186 if (!dcrtc->frame_work)
187 dcrtc->frame_work = work;
190 spin_unlock_irqrestore(&dev->event_lock, flags);
193 drm_vblank_put(dev, dcrtc->num);
198 static void armada_drm_crtc_complete_frame_work(struct armada_crtc *dcrtc)
200 struct drm_device *dev = dcrtc->crtc.dev;
201 struct armada_frame_work *work = dcrtc->frame_work;
203 dcrtc->frame_work = NULL;
205 armada_drm_crtc_update_regs(dcrtc, work->regs);
208 drm_send_vblank_event(dev, dcrtc->num, work->event);
210 drm_vblank_put(dev, dcrtc->num);
212 /* Finally, queue the process-half of the cleanup. */
213 __armada_drm_queue_unref_work(dcrtc->crtc.dev, work->old_fb);
217 static void armada_drm_crtc_finish_fb(struct armada_crtc *dcrtc,
218 struct drm_framebuffer *fb, bool force)
220 struct armada_frame_work *work;
226 /* Display is disabled, so just drop the old fb */
227 drm_framebuffer_unreference(fb);
231 work = kmalloc(sizeof(*work), GFP_KERNEL);
236 armada_reg_queue_end(work->regs, i);
238 if (armada_drm_crtc_queue_frame_work(dcrtc, work) == 0)
245 * Oops - just drop the reference immediately and hope for
246 * the best. The worst that will happen is the buffer gets
247 * reused before it has finished being displayed.
249 drm_framebuffer_unreference(fb);
252 static void armada_drm_vblank_off(struct armada_crtc *dcrtc)
254 struct drm_device *dev = dcrtc->crtc.dev;
257 * Tell the DRM core that vblank IRQs aren't going to happen for
258 * a while. This cleans up any pending vblank events for us.
260 drm_vblank_off(dev, dcrtc->num);
262 /* Handle any pending flip event. */
263 spin_lock_irq(&dev->event_lock);
264 if (dcrtc->frame_work)
265 armada_drm_crtc_complete_frame_work(dcrtc);
266 spin_unlock_irq(&dev->event_lock);
269 void armada_drm_crtc_gamma_set(struct drm_crtc *crtc, u16 r, u16 g, u16 b,
274 void armada_drm_crtc_gamma_get(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
279 /* The mode_config.mutex will be held for this call */
280 static void armada_drm_crtc_dpms(struct drm_crtc *crtc, int dpms)
282 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
284 if (dcrtc->dpms != dpms) {
286 armada_drm_crtc_update(dcrtc);
287 if (dpms_blanked(dpms))
288 armada_drm_vblank_off(dcrtc);
293 * Prepare for a mode set. Turn off overlay to ensure that we don't end
294 * up with the overlay size being bigger than the active screen size.
295 * We rely upon X refreshing this state after the mode set has completed.
297 * The mode_config.mutex will be held for this call
299 static void armada_drm_crtc_prepare(struct drm_crtc *crtc)
301 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
302 struct drm_plane *plane;
305 * If we have an overlay plane associated with this CRTC, disable
306 * it before the modeset to avoid its coordinates being outside
307 * the new mode parameters. DRM doesn't provide help with this.
309 plane = dcrtc->plane;
311 struct drm_framebuffer *fb = plane->fb;
313 plane->funcs->disable_plane(plane);
316 drm_framebuffer_unreference(fb);
320 /* The mode_config.mutex will be held for this call */
321 static void armada_drm_crtc_commit(struct drm_crtc *crtc)
323 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
325 if (dcrtc->dpms != DRM_MODE_DPMS_ON) {
326 dcrtc->dpms = DRM_MODE_DPMS_ON;
327 armada_drm_crtc_update(dcrtc);
331 /* The mode_config.mutex will be held for this call */
332 static bool armada_drm_crtc_mode_fixup(struct drm_crtc *crtc,
333 const struct drm_display_mode *mode, struct drm_display_mode *adj)
335 struct armada_private *priv = crtc->dev->dev_private;
336 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
339 /* We can't do interlaced modes if we don't have the SPU_ADV_REG */
340 if (!priv->variant->has_spu_adv_reg &&
341 adj->flags & DRM_MODE_FLAG_INTERLACE)
344 /* Check whether the display mode is possible */
345 ret = priv->variant->crtc_compute_clock(dcrtc, adj, NULL);
352 void armada_drm_crtc_irq(struct armada_crtc *dcrtc, u32 stat)
354 struct armada_vbl_event *e, *n;
355 void __iomem *base = dcrtc->base;
357 if (stat & DMA_FF_UNDERFLOW)
358 DRM_ERROR("video underflow on crtc %u\n", dcrtc->num);
359 if (stat & GRA_FF_UNDERFLOW)
360 DRM_ERROR("graphics underflow on crtc %u\n", dcrtc->num);
362 if (stat & VSYNC_IRQ)
363 drm_handle_vblank(dcrtc->crtc.dev, dcrtc->num);
365 spin_lock(&dcrtc->irq_lock);
367 list_for_each_entry_safe(e, n, &dcrtc->vbl_list, node) {
368 list_del_init(&e->node);
369 drm_vblank_put(dcrtc->crtc.dev, dcrtc->num);
370 e->fn(dcrtc, e->data);
373 if (stat & GRA_FRAME_IRQ && dcrtc->interlaced) {
374 int i = stat & GRA_FRAME_IRQ0 ? 0 : 1;
377 writel_relaxed(dcrtc->v[i].spu_v_porch, base + LCD_SPU_V_PORCH);
378 writel_relaxed(dcrtc->v[i].spu_v_h_total,
379 base + LCD_SPUT_V_H_TOTAL);
381 val = readl_relaxed(base + LCD_SPU_ADV_REG);
382 val &= ~(ADV_VSYNC_L_OFF | ADV_VSYNC_H_OFF | ADV_VSYNCOFFEN);
383 val |= dcrtc->v[i].spu_adv_reg;
384 writel_relaxed(val, base + LCD_SPU_ADV_REG);
387 if (stat & DUMB_FRAMEDONE && dcrtc->cursor_update) {
388 writel_relaxed(dcrtc->cursor_hw_pos,
389 base + LCD_SPU_HWC_OVSA_HPXL_VLN);
390 writel_relaxed(dcrtc->cursor_hw_sz,
391 base + LCD_SPU_HWC_HPXL_VLN);
392 armada_updatel(CFG_HWC_ENA,
393 CFG_HWC_ENA | CFG_HWC_1BITMOD | CFG_HWC_1BITENA,
394 base + LCD_SPU_DMA_CTRL0);
395 dcrtc->cursor_update = false;
396 armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
399 spin_unlock(&dcrtc->irq_lock);
401 if (stat & GRA_FRAME_IRQ) {
402 struct drm_device *dev = dcrtc->crtc.dev;
404 spin_lock(&dev->event_lock);
405 if (dcrtc->frame_work)
406 armada_drm_crtc_complete_frame_work(dcrtc);
407 spin_unlock(&dev->event_lock);
409 wake_up(&dcrtc->frame_wait);
413 /* These are locked by dev->vbl_lock */
414 void armada_drm_crtc_disable_irq(struct armada_crtc *dcrtc, u32 mask)
416 if (dcrtc->irq_ena & mask) {
417 dcrtc->irq_ena &= ~mask;
418 writel(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA);
422 void armada_drm_crtc_enable_irq(struct armada_crtc *dcrtc, u32 mask)
424 if ((dcrtc->irq_ena & mask) != mask) {
425 dcrtc->irq_ena |= mask;
426 writel(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA);
427 if (readl_relaxed(dcrtc->base + LCD_SPU_IRQ_ISR) & mask)
428 writel(0, dcrtc->base + LCD_SPU_IRQ_ISR);
432 static uint32_t armada_drm_crtc_calculate_csc(struct armada_crtc *dcrtc)
434 struct drm_display_mode *adj = &dcrtc->crtc.mode;
437 if (dcrtc->csc_yuv_mode == CSC_YUV_CCIR709)
438 val |= CFG_CSC_YUV_CCIR709;
439 if (dcrtc->csc_rgb_mode == CSC_RGB_STUDIO)
440 val |= CFG_CSC_RGB_STUDIO;
443 * In auto mode, set the colorimetry, based upon the HDMI spec.
444 * 1280x720p, 1920x1080p and 1920x1080i use ITU709, others use
445 * ITU601. It may be more appropriate to set this depending on
446 * the source - but what if the graphic frame is YUV and the
447 * video frame is RGB?
449 if ((adj->hdisplay == 1280 && adj->vdisplay == 720 &&
450 !(adj->flags & DRM_MODE_FLAG_INTERLACE)) ||
451 (adj->hdisplay == 1920 && adj->vdisplay == 1080)) {
452 if (dcrtc->csc_yuv_mode == CSC_AUTO)
453 val |= CFG_CSC_YUV_CCIR709;
457 * We assume we're connected to a TV-like device, so the YUV->RGB
458 * conversion should produce a limited range. We should set this
459 * depending on the connectors attached to this CRTC, and what
460 * kind of device they report being connected.
462 if (dcrtc->csc_rgb_mode == CSC_AUTO)
463 val |= CFG_CSC_RGB_STUDIO;
468 /* The mode_config.mutex will be held for this call */
469 static int armada_drm_crtc_mode_set(struct drm_crtc *crtc,
470 struct drm_display_mode *mode, struct drm_display_mode *adj,
471 int x, int y, struct drm_framebuffer *old_fb)
473 struct armada_private *priv = crtc->dev->dev_private;
474 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
475 struct armada_regs regs[17];
476 uint32_t lm, rm, tm, bm, val, sclk;
481 drm_framebuffer_reference(crtc->fb);
483 interlaced = !!(adj->flags & DRM_MODE_FLAG_INTERLACE);
485 i = armada_drm_crtc_calc_fb(dcrtc->crtc.fb, x, y, regs, interlaced);
487 rm = adj->crtc_hsync_start - adj->crtc_hdisplay;
488 lm = adj->crtc_htotal - adj->crtc_hsync_end;
489 bm = adj->crtc_vsync_start - adj->crtc_vdisplay;
490 tm = adj->crtc_vtotal - adj->crtc_vsync_end;
492 DRM_DEBUG_DRIVER("H: %d %d %d %d lm %d rm %d\n",
494 adj->crtc_hsync_start,
496 adj->crtc_htotal, lm, rm);
497 DRM_DEBUG_DRIVER("V: %d %d %d %d tm %d bm %d\n",
499 adj->crtc_vsync_start,
501 adj->crtc_vtotal, tm, bm);
503 /* Wait for pending flips to complete */
504 wait_event(dcrtc->frame_wait, !dcrtc->frame_work);
506 drm_vblank_pre_modeset(crtc->dev, dcrtc->num);
510 val = dcrtc->dumb_ctrl & ~CFG_DUMB_ENA;
511 if (val != dcrtc->dumb_ctrl) {
512 dcrtc->dumb_ctrl = val;
513 writel_relaxed(val, dcrtc->base + LCD_SPU_DUMB_CTRL);
516 /* Now compute the divider for real */
517 priv->variant->crtc_compute_clock(dcrtc, adj, &sclk);
519 /* Ensure graphic fifo is enabled */
520 armada_reg_queue_mod(regs, i, 0, CFG_PDWN64x66, LCD_SPU_SRAM_PARA1);
521 armada_reg_queue_set(regs, i, sclk, LCD_CFG_SCLK_DIV);
523 if (interlaced ^ dcrtc->interlaced) {
524 if (adj->flags & DRM_MODE_FLAG_INTERLACE)
525 drm_vblank_get(dcrtc->crtc.dev, dcrtc->num);
527 drm_vblank_put(dcrtc->crtc.dev, dcrtc->num);
528 dcrtc->interlaced = interlaced;
531 spin_lock_irqsave(&dcrtc->irq_lock, flags);
533 /* Even interlaced/progressive frame */
534 dcrtc->v[1].spu_v_h_total = adj->crtc_vtotal << 16 |
536 dcrtc->v[1].spu_v_porch = tm << 16 | bm;
537 val = adj->crtc_hsync_start;
538 dcrtc->v[1].spu_adv_reg = val << 20 | val | ADV_VSYNCOFFEN |
539 priv->variant->spu_adv_reg;
542 /* Odd interlaced frame */
543 dcrtc->v[0].spu_v_h_total = dcrtc->v[1].spu_v_h_total +
545 dcrtc->v[0].spu_v_porch = dcrtc->v[1].spu_v_porch + 1;
546 val = adj->crtc_hsync_start - adj->crtc_htotal / 2;
547 dcrtc->v[0].spu_adv_reg = val << 20 | val | ADV_VSYNCOFFEN |
548 priv->variant->spu_adv_reg;
550 dcrtc->v[0] = dcrtc->v[1];
553 val = adj->crtc_vdisplay << 16 | adj->crtc_hdisplay;
555 armada_reg_queue_set(regs, i, val, LCD_SPU_V_H_ACTIVE);
556 armada_reg_queue_set(regs, i, val, LCD_SPU_GRA_HPXL_VLN);
557 armada_reg_queue_set(regs, i, val, LCD_SPU_GZM_HPXL_VLN);
558 armada_reg_queue_set(regs, i, (lm << 16) | rm, LCD_SPU_H_PORCH);
559 armada_reg_queue_set(regs, i, dcrtc->v[0].spu_v_porch, LCD_SPU_V_PORCH);
560 armada_reg_queue_set(regs, i, dcrtc->v[0].spu_v_h_total,
563 if (priv->variant->has_spu_adv_reg) {
564 armada_reg_queue_mod(regs, i, dcrtc->v[0].spu_adv_reg,
565 ADV_VSYNC_L_OFF | ADV_VSYNC_H_OFF |
566 ADV_VSYNCOFFEN, LCD_SPU_ADV_REG);
569 val = CFG_GRA_ENA | CFG_GRA_HSMOOTH;
570 val |= CFG_GRA_FMT(drm_fb_to_armada_fb(dcrtc->crtc.fb)->fmt);
571 val |= CFG_GRA_MOD(drm_fb_to_armada_fb(dcrtc->crtc.fb)->mod);
573 if (drm_fb_to_armada_fb(dcrtc->crtc.fb)->fmt > CFG_420)
574 val |= CFG_PALETTE_ENA;
577 val |= CFG_GRA_FTOGGLE;
579 armada_reg_queue_mod(regs, i, val, CFG_GRAFORMAT |
580 CFG_GRA_MOD(CFG_SWAPRB | CFG_SWAPUV |
581 CFG_SWAPYU | CFG_YUV2RGB) |
582 CFG_PALETTE_ENA | CFG_GRA_FTOGGLE,
585 val = adj->flags & DRM_MODE_FLAG_NVSYNC ? CFG_VSYNC_INV : 0;
586 armada_reg_queue_mod(regs, i, val, CFG_VSYNC_INV, LCD_SPU_DMA_CTRL1);
588 val = dcrtc->spu_iopad_ctrl | armada_drm_crtc_calculate_csc(dcrtc);
589 armada_reg_queue_set(regs, i, val, LCD_SPU_IOPAD_CONTROL);
590 armada_reg_queue_end(regs, i);
592 armada_drm_crtc_update_regs(dcrtc, regs);
593 spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
595 armada_drm_crtc_update(dcrtc);
597 drm_vblank_post_modeset(crtc->dev, dcrtc->num);
598 armada_drm_crtc_finish_fb(dcrtc, old_fb, dpms_blanked(dcrtc->dpms));
603 /* The mode_config.mutex will be held for this call */
604 static int armada_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
605 struct drm_framebuffer *old_fb)
607 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
608 struct armada_regs regs[4];
611 i = armada_drm_crtc_calc_fb(crtc->fb, crtc->x, crtc->y, regs,
613 armada_reg_queue_end(regs, i);
615 /* Wait for pending flips to complete */
616 wait_event(dcrtc->frame_wait, !dcrtc->frame_work);
618 /* Take a reference to the new fb as we're using it */
619 drm_framebuffer_reference(crtc->fb);
621 /* Update the base in the CRTC */
622 armada_drm_crtc_update_regs(dcrtc, regs);
624 /* Drop our previously held reference */
625 armada_drm_crtc_finish_fb(dcrtc, old_fb, dpms_blanked(dcrtc->dpms));
630 static void armada_drm_crtc_load_lut(struct drm_crtc *crtc)
634 /* The mode_config.mutex will be held for this call */
635 static void armada_drm_crtc_disable(struct drm_crtc *crtc)
637 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
639 armada_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
640 armada_drm_crtc_finish_fb(dcrtc, crtc->fb, true);
642 /* Power down most RAMs and FIFOs */
643 writel_relaxed(CFG_PDWN256x32 | CFG_PDWN256x24 | CFG_PDWN256x8 |
644 CFG_PDWN32x32 | CFG_PDWN16x66 | CFG_PDWN32x66 |
645 CFG_PDWN64x66, dcrtc->base + LCD_SPU_SRAM_PARA1);
648 static const struct drm_crtc_helper_funcs armada_crtc_helper_funcs = {
649 .dpms = armada_drm_crtc_dpms,
650 .prepare = armada_drm_crtc_prepare,
651 .commit = armada_drm_crtc_commit,
652 .mode_fixup = armada_drm_crtc_mode_fixup,
653 .mode_set = armada_drm_crtc_mode_set,
654 .mode_set_base = armada_drm_crtc_mode_set_base,
655 .load_lut = armada_drm_crtc_load_lut,
656 .disable = armada_drm_crtc_disable,
659 static void armada_load_cursor_argb(void __iomem *base, uint32_t *pix,
660 unsigned stride, unsigned width, unsigned height)
665 addr = SRAM_HWC32_RAM1;
666 for (y = 0; y < height; y++) {
667 uint32_t *p = &pix[y * stride];
670 for (x = 0; x < width; x++, p++) {
673 val = (val & 0xff00ff00) |
674 (val & 0x000000ff) << 16 |
675 (val & 0x00ff0000) >> 16;
678 base + LCD_SPU_SRAM_WRDAT);
679 writel_relaxed(addr | SRAM_WRITE,
680 base + LCD_SPU_SRAM_CTRL);
682 if ((addr & 0x00ff) == 0)
684 if ((addr & 0x30ff) == 0)
685 addr = SRAM_HWC32_RAM2;
690 static void armada_drm_crtc_cursor_tran(void __iomem *base)
694 for (addr = 0; addr < 256; addr++) {
695 /* write the default value */
696 writel_relaxed(0x55555555, base + LCD_SPU_SRAM_WRDAT);
697 writel_relaxed(addr | SRAM_WRITE | SRAM_HWC32_TRAN,
698 base + LCD_SPU_SRAM_CTRL);
702 static int armada_drm_crtc_cursor_update(struct armada_crtc *dcrtc, bool reload)
704 uint32_t xoff, xscr, w = dcrtc->cursor_w, s;
705 uint32_t yoff, yscr, h = dcrtc->cursor_h;
709 * Calculate the visible width and height of the cursor,
710 * screen position, and the position in the cursor bitmap.
712 if (dcrtc->cursor_x < 0) {
713 xoff = -dcrtc->cursor_x;
716 } else if (dcrtc->cursor_x + w > dcrtc->crtc.mode.hdisplay) {
718 xscr = dcrtc->cursor_x;
719 w = max_t(int, dcrtc->crtc.mode.hdisplay - dcrtc->cursor_x, 0);
722 xscr = dcrtc->cursor_x;
725 if (dcrtc->cursor_y < 0) {
726 yoff = -dcrtc->cursor_y;
729 } else if (dcrtc->cursor_y + h > dcrtc->crtc.mode.vdisplay) {
731 yscr = dcrtc->cursor_y;
732 h = max_t(int, dcrtc->crtc.mode.vdisplay - dcrtc->cursor_y, 0);
735 yscr = dcrtc->cursor_y;
738 /* On interlaced modes, the vertical cursor size must be halved */
740 if (dcrtc->interlaced) {
746 if (!dcrtc->cursor_obj || !h || !w) {
747 spin_lock_irq(&dcrtc->irq_lock);
748 armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
749 dcrtc->cursor_update = false;
750 armada_updatel(0, CFG_HWC_ENA, dcrtc->base + LCD_SPU_DMA_CTRL0);
751 spin_unlock_irq(&dcrtc->irq_lock);
755 para1 = readl_relaxed(dcrtc->base + LCD_SPU_SRAM_PARA1);
756 armada_updatel(CFG_CSB_256x32, CFG_CSB_256x32 | CFG_PDWN256x32,
757 dcrtc->base + LCD_SPU_SRAM_PARA1);
760 * Initialize the transparency if the SRAM was powered down.
761 * We must also reload the cursor data as well.
763 if (!(para1 & CFG_CSB_256x32)) {
764 armada_drm_crtc_cursor_tran(dcrtc->base);
768 if (dcrtc->cursor_hw_sz != (h << 16 | w)) {
769 spin_lock_irq(&dcrtc->irq_lock);
770 armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
771 dcrtc->cursor_update = false;
772 armada_updatel(0, CFG_HWC_ENA, dcrtc->base + LCD_SPU_DMA_CTRL0);
773 spin_unlock_irq(&dcrtc->irq_lock);
777 struct armada_gem_object *obj = dcrtc->cursor_obj;
779 /* Set the top-left corner of the cursor image */
781 pix += yoff * s + xoff;
782 armada_load_cursor_argb(dcrtc->base, pix, s, w, h);
785 /* Reload the cursor position, size and enable in the IRQ handler */
786 spin_lock_irq(&dcrtc->irq_lock);
787 dcrtc->cursor_hw_pos = yscr << 16 | xscr;
788 dcrtc->cursor_hw_sz = h << 16 | w;
789 dcrtc->cursor_update = true;
790 armada_drm_crtc_enable_irq(dcrtc, DUMB_FRAMEDONE_ENA);
791 spin_unlock_irq(&dcrtc->irq_lock);
796 static void cursor_update(void *data)
798 armada_drm_crtc_cursor_update(data, true);
801 static int armada_drm_crtc_cursor_set(struct drm_crtc *crtc,
802 struct drm_file *file, uint32_t handle, uint32_t w, uint32_t h)
804 struct drm_device *dev = crtc->dev;
805 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
806 struct armada_private *priv = crtc->dev->dev_private;
807 struct armada_gem_object *obj = NULL;
810 /* If no cursor support, replicate drm's return value */
811 if (!priv->variant->has_spu_adv_reg)
814 if (handle && w > 0 && h > 0) {
815 /* maximum size is 64x32 or 32x64 */
816 if (w > 64 || h > 64 || (w > 32 && h > 32))
819 obj = armada_gem_object_lookup(dev, file, handle);
823 /* Must be a kernel-mapped object */
825 drm_gem_object_unreference_unlocked(&obj->obj);
829 if (obj->obj.size < w * h * 4) {
830 DRM_ERROR("buffer is too small\n");
831 drm_gem_object_unreference_unlocked(&obj->obj);
836 mutex_lock(&dev->struct_mutex);
837 if (dcrtc->cursor_obj) {
838 dcrtc->cursor_obj->update = NULL;
839 dcrtc->cursor_obj->update_data = NULL;
840 drm_gem_object_unreference(&dcrtc->cursor_obj->obj);
842 dcrtc->cursor_obj = obj;
845 ret = armada_drm_crtc_cursor_update(dcrtc, true);
847 obj->update_data = dcrtc;
848 obj->update = cursor_update;
850 mutex_unlock(&dev->struct_mutex);
855 static int armada_drm_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
857 struct drm_device *dev = crtc->dev;
858 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
859 struct armada_private *priv = crtc->dev->dev_private;
862 /* If no cursor support, replicate drm's return value */
863 if (!priv->variant->has_spu_adv_reg)
866 mutex_lock(&dev->struct_mutex);
869 ret = armada_drm_crtc_cursor_update(dcrtc, false);
870 mutex_unlock(&dev->struct_mutex);
875 static void armada_drm_crtc_destroy(struct drm_crtc *crtc)
877 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
878 struct armada_private *priv = crtc->dev->dev_private;
880 if (dcrtc->cursor_obj)
881 drm_gem_object_unreference(&dcrtc->cursor_obj->obj);
883 priv->dcrtc[dcrtc->num] = NULL;
884 drm_crtc_cleanup(&dcrtc->crtc);
886 if (!IS_ERR(dcrtc->clk))
887 clk_disable_unprepare(dcrtc->clk);
893 * The mode_config lock is held here, to prevent races between this
896 static int armada_drm_crtc_page_flip(struct drm_crtc *crtc,
897 struct drm_framebuffer *fb, struct drm_pending_vblank_event *event, uint32_t page_flip_flags)
899 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
900 struct armada_frame_work *work;
901 struct drm_device *dev = crtc->dev;
906 /* We don't support changing the pixel format */
907 if (fb->pixel_format != crtc->fb->pixel_format)
910 work = kmalloc(sizeof(*work), GFP_KERNEL);
915 work->old_fb = dcrtc->crtc.fb;
917 i = armada_drm_crtc_calc_fb(fb, crtc->x, crtc->y, work->regs,
919 armada_reg_queue_end(work->regs, i);
922 * Hold the old framebuffer for the work - DRM appears to drop our
923 * reference to the old framebuffer in drm_mode_page_flip_ioctl().
925 drm_framebuffer_reference(work->old_fb);
927 ret = armada_drm_crtc_queue_frame_work(dcrtc, work);
930 * Undo our reference above; DRM does not drop the reference
931 * to this object on error, so that's okay.
933 drm_framebuffer_unreference(work->old_fb);
939 * Don't take a reference on the new framebuffer;
940 * drm_mode_page_flip_ioctl() has already grabbed a reference and
941 * will _not_ drop that reference on successful return from this
942 * function. Simply mark this new framebuffer as the current one.
947 * Finally, if the display is blanked, we won't receive an
948 * interrupt, so complete it now.
950 if (dpms_blanked(dcrtc->dpms)) {
951 spin_lock_irqsave(&dev->event_lock, flags);
952 if (dcrtc->frame_work)
953 armada_drm_crtc_complete_frame_work(dcrtc);
954 spin_unlock_irqrestore(&dev->event_lock, flags);
961 armada_drm_crtc_set_property(struct drm_crtc *crtc,
962 struct drm_property *property, uint64_t val)
964 struct armada_private *priv = crtc->dev->dev_private;
965 struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
966 bool update_csc = false;
968 if (property == priv->csc_yuv_prop) {
969 dcrtc->csc_yuv_mode = val;
971 } else if (property == priv->csc_rgb_prop) {
972 dcrtc->csc_rgb_mode = val;
979 val = dcrtc->spu_iopad_ctrl |
980 armada_drm_crtc_calculate_csc(dcrtc);
981 writel_relaxed(val, dcrtc->base + LCD_SPU_IOPAD_CONTROL);
987 static struct drm_crtc_funcs armada_crtc_funcs = {
988 .cursor_set = armada_drm_crtc_cursor_set,
989 .cursor_move = armada_drm_crtc_cursor_move,
990 .destroy = armada_drm_crtc_destroy,
991 .set_config = drm_crtc_helper_set_config,
992 .page_flip = armada_drm_crtc_page_flip,
993 .set_property = armada_drm_crtc_set_property,
996 static struct drm_prop_enum_list armada_drm_csc_yuv_enum_list[] = {
997 { CSC_AUTO, "Auto" },
998 { CSC_YUV_CCIR601, "CCIR601" },
999 { CSC_YUV_CCIR709, "CCIR709" },
1002 static struct drm_prop_enum_list armada_drm_csc_rgb_enum_list[] = {
1003 { CSC_AUTO, "Auto" },
1004 { CSC_RGB_COMPUTER, "Computer system" },
1005 { CSC_RGB_STUDIO, "Studio" },
1008 static int armada_drm_crtc_create_properties(struct drm_device *dev)
1010 struct armada_private *priv = dev->dev_private;
1012 if (priv->csc_yuv_prop)
1015 priv->csc_yuv_prop = drm_property_create_enum(dev, 0,
1016 "CSC_YUV", armada_drm_csc_yuv_enum_list,
1017 ARRAY_SIZE(armada_drm_csc_yuv_enum_list));
1018 priv->csc_rgb_prop = drm_property_create_enum(dev, 0,
1019 "CSC_RGB", armada_drm_csc_rgb_enum_list,
1020 ARRAY_SIZE(armada_drm_csc_rgb_enum_list));
1022 if (!priv->csc_yuv_prop || !priv->csc_rgb_prop)
1028 int armada_drm_crtc_create(struct drm_device *dev, unsigned num,
1029 struct resource *res)
1031 struct armada_private *priv = dev->dev_private;
1032 struct armada_crtc *dcrtc;
1036 ret = armada_drm_crtc_create_properties(dev);
1040 base = devm_request_and_ioremap(dev->dev, res);
1042 DRM_ERROR("failed to ioremap register\n");
1046 dcrtc = kzalloc(sizeof(*dcrtc), GFP_KERNEL);
1048 DRM_ERROR("failed to allocate Armada crtc\n");
1054 dcrtc->clk = ERR_PTR(-EINVAL);
1055 dcrtc->csc_yuv_mode = CSC_AUTO;
1056 dcrtc->csc_rgb_mode = CSC_AUTO;
1057 dcrtc->cfg_dumb_ctrl = DUMB24_RGB888_0;
1058 dcrtc->spu_iopad_ctrl = CFG_VSCALE_LN_EN | CFG_IOPAD_DUMB24;
1059 spin_lock_init(&dcrtc->irq_lock);
1060 dcrtc->irq_ena = CLEAN_SPU_IRQ_ISR;
1061 INIT_LIST_HEAD(&dcrtc->vbl_list);
1062 init_waitqueue_head(&dcrtc->frame_wait);
1064 /* Initialize some registers which we don't otherwise set */
1065 writel_relaxed(0x00000001, dcrtc->base + LCD_CFG_SCLK_DIV);
1066 writel_relaxed(0x00000000, dcrtc->base + LCD_SPU_BLANKCOLOR);
1067 writel_relaxed(dcrtc->spu_iopad_ctrl,
1068 dcrtc->base + LCD_SPU_IOPAD_CONTROL);
1069 writel_relaxed(0x00000000, dcrtc->base + LCD_SPU_SRAM_PARA0);
1070 writel_relaxed(CFG_PDWN256x32 | CFG_PDWN256x24 | CFG_PDWN256x8 |
1071 CFG_PDWN32x32 | CFG_PDWN16x66 | CFG_PDWN32x66 |
1072 CFG_PDWN64x66, dcrtc->base + LCD_SPU_SRAM_PARA1);
1073 writel_relaxed(0x2032ff81, dcrtc->base + LCD_SPU_DMA_CTRL1);
1074 writel_relaxed(0x00000000, dcrtc->base + LCD_SPU_GRA_OVSA_HPXL_VLN);
1076 if (priv->variant->crtc_init) {
1077 ret = priv->variant->crtc_init(dcrtc);
1084 /* Ensure AXI pipeline is enabled */
1085 armada_updatel(CFG_ARBFAST_ENA, 0, dcrtc->base + LCD_SPU_DMA_CTRL0);
1087 priv->dcrtc[dcrtc->num] = dcrtc;
1089 drm_crtc_init(dev, &dcrtc->crtc, &armada_crtc_funcs);
1090 drm_crtc_helper_add(&dcrtc->crtc, &armada_crtc_helper_funcs);
1092 drm_object_attach_property(&dcrtc->crtc.base, priv->csc_yuv_prop,
1093 dcrtc->csc_yuv_mode);
1094 drm_object_attach_property(&dcrtc->crtc.base, priv->csc_rgb_prop,
1095 dcrtc->csc_rgb_mode);
1097 return armada_overlay_plane_create(dev, 1 << dcrtc->num);