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Merge tag 'driver-core-4.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / gpu / drm / rockchip / rockchip_drm_vop.c
1 /*
2 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
3 * Author:Mark Yao <mark.yao@rock-chips.com>
4 *
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14
15 #include <drm/drm.h>
16 #include <drm/drmP.h>
17 #include <drm/drm_atomic.h>
18 #include <drm/drm_crtc.h>
19 #include <drm/drm_crtc_helper.h>
20 #include <drm/drm_plane_helper.h>
21
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/platform_device.h>
25 #include <linux/clk.h>
26 #include <linux/of.h>
27 #include <linux/of_device.h>
28 #include <linux/pm_runtime.h>
29 #include <linux/component.h>
30
31 #include <linux/reset.h>
32 #include <linux/delay.h>
33
34 #include "rockchip_drm_drv.h"
35 #include "rockchip_drm_gem.h"
36 #include "rockchip_drm_fb.h"
37 #include "rockchip_drm_vop.h"
38
39 #define __REG_SET_RELAXED(x, off, mask, shift, v) \
40 vop_mask_write_relaxed(x, off, (mask) << shift, (v) << shift)
41 #define __REG_SET_NORMAL(x, off, mask, shift, v) \
42 vop_mask_write(x, off, (mask) << shift, (v) << shift)
43
44 #define REG_SET(x, base, reg, v, mode) \
45 __REG_SET_##mode(x, base + reg.offset, reg.mask, reg.shift, v)
46 #define REG_SET_MASK(x, base, reg, mask, v, mode) \
47 __REG_SET_##mode(x, base + reg.offset, mask, reg.shift, v)
48
49 #define VOP_WIN_SET(x, win, name, v) \
50 REG_SET(x, win->base, win->phy->name, v, RELAXED)
51 #define VOP_SCL_SET(x, win, name, v) \
52 REG_SET(x, win->base, win->phy->scl->name, v, RELAXED)
53 #define VOP_SCL_SET_EXT(x, win, name, v) \
54 REG_SET(x, win->base, win->phy->scl->ext->name, v, RELAXED)
55 #define VOP_CTRL_SET(x, name, v) \
56 REG_SET(x, 0, (x)->data->ctrl->name, v, NORMAL)
57
58 #define VOP_INTR_GET(vop, name) \
59 vop_read_reg(vop, 0, &vop->data->ctrl->name)
60
61 #define VOP_INTR_SET(vop, name, mask, v) \
62 REG_SET_MASK(vop, 0, vop->data->intr->name, mask, v, NORMAL)
63 #define VOP_INTR_SET_TYPE(vop, name, type, v) \
64 do { \
65 int i, reg = 0, mask = 0; \
66 for (i = 0; i < vop->data->intr->nintrs; i++) { \
67 if (vop->data->intr->intrs[i] & type) { \
68 reg |= (v) << i; \
69 mask |= 1 << i; \
70 } \
71 } \
72 VOP_INTR_SET(vop, name, mask, reg); \
73 } while (0)
74 #define VOP_INTR_GET_TYPE(vop, name, type) \
75 vop_get_intr_type(vop, &vop->data->intr->name, type)
76
77 #define VOP_WIN_GET(x, win, name) \
78 vop_read_reg(x, win->base, &win->phy->name)
79
80 #define VOP_WIN_GET_YRGBADDR(vop, win) \
81 vop_readl(vop, win->base + win->phy->yrgb_mst.offset)
82
83 #define to_vop(x) container_of(x, struct vop, crtc)
84 #define to_vop_win(x) container_of(x, struct vop_win, base)
85 #define to_vop_plane_state(x) container_of(x, struct vop_plane_state, base)
86
87 struct vop_plane_state {
88 struct drm_plane_state base;
89 int format;
90 struct drm_rect src;
91 struct drm_rect dest;
92 dma_addr_t yrgb_mst;
93 bool enable;
94 };
95
96 struct vop_win {
97 struct drm_plane base;
98 const struct vop_win_data *data;
99 struct vop *vop;
100
101 struct vop_plane_state state;
102 };
103
104 struct vop {
105 struct drm_crtc crtc;
106 struct device *dev;
107 struct drm_device *drm_dev;
108 bool is_enabled;
109
110 /* mutex vsync_ work */
111 struct mutex vsync_mutex;
112 bool vsync_work_pending;
113 struct completion dsp_hold_completion;
114 struct completion wait_update_complete;
115 struct drm_pending_vblank_event *event;
116
117 const struct vop_data *data;
118
119 uint32_t *regsbak;
120 void __iomem *regs;
121
122 /* physical map length of vop register */
123 uint32_t len;
124
125 /* one time only one process allowed to config the register */
126 spinlock_t reg_lock;
127 /* lock vop irq reg */
128 spinlock_t irq_lock;
129
130 unsigned int irq;
131
132 /* vop AHP clk */
133 struct clk *hclk;
134 /* vop dclk */
135 struct clk *dclk;
136 /* vop share memory frequency */
137 struct clk *aclk;
138
139 /* vop dclk reset */
140 struct reset_control *dclk_rst;
141
142 struct vop_win win[];
143 };
144
145 static inline void vop_writel(struct vop *vop, uint32_t offset, uint32_t v)
146 {
147 writel(v, vop->regs + offset);
148 vop->regsbak[offset >> 2] = v;
149 }
150
151 static inline uint32_t vop_readl(struct vop *vop, uint32_t offset)
152 {
153 return readl(vop->regs + offset);
154 }
155
156 static inline uint32_t vop_read_reg(struct vop *vop, uint32_t base,
157 const struct vop_reg *reg)
158 {
159 return (vop_readl(vop, base + reg->offset) >> reg->shift) & reg->mask;
160 }
161
162 static inline void vop_mask_write(struct vop *vop, uint32_t offset,
163 uint32_t mask, uint32_t v)
164 {
165 if (mask) {
166 uint32_t cached_val = vop->regsbak[offset >> 2];
167
168 cached_val = (cached_val & ~mask) | v;
169 writel(cached_val, vop->regs + offset);
170 vop->regsbak[offset >> 2] = cached_val;
171 }
172 }
173
174 static inline void vop_mask_write_relaxed(struct vop *vop, uint32_t offset,
175 uint32_t mask, uint32_t v)
176 {
177 if (mask) {
178 uint32_t cached_val = vop->regsbak[offset >> 2];
179
180 cached_val = (cached_val & ~mask) | v;
181 writel_relaxed(cached_val, vop->regs + offset);
182 vop->regsbak[offset >> 2] = cached_val;
183 }
184 }
185
186 static inline uint32_t vop_get_intr_type(struct vop *vop,
187 const struct vop_reg *reg, int type)
188 {
189 uint32_t i, ret = 0;
190 uint32_t regs = vop_read_reg(vop, 0, reg);
191
192 for (i = 0; i < vop->data->intr->nintrs; i++) {
193 if ((type & vop->data->intr->intrs[i]) && (regs & 1 << i))
194 ret |= vop->data->intr->intrs[i];
195 }
196
197 return ret;
198 }
199
200 static inline void vop_cfg_done(struct vop *vop)
201 {
202 VOP_CTRL_SET(vop, cfg_done, 1);
203 }
204
205 static bool has_rb_swapped(uint32_t format)
206 {
207 switch (format) {
208 case DRM_FORMAT_XBGR8888:
209 case DRM_FORMAT_ABGR8888:
210 case DRM_FORMAT_BGR888:
211 case DRM_FORMAT_BGR565:
212 return true;
213 default:
214 return false;
215 }
216 }
217
218 static enum vop_data_format vop_convert_format(uint32_t format)
219 {
220 switch (format) {
221 case DRM_FORMAT_XRGB8888:
222 case DRM_FORMAT_ARGB8888:
223 case DRM_FORMAT_XBGR8888:
224 case DRM_FORMAT_ABGR8888:
225 return VOP_FMT_ARGB8888;
226 case DRM_FORMAT_RGB888:
227 case DRM_FORMAT_BGR888:
228 return VOP_FMT_RGB888;
229 case DRM_FORMAT_RGB565:
230 case DRM_FORMAT_BGR565:
231 return VOP_FMT_RGB565;
232 case DRM_FORMAT_NV12:
233 return VOP_FMT_YUV420SP;
234 case DRM_FORMAT_NV16:
235 return VOP_FMT_YUV422SP;
236 case DRM_FORMAT_NV24:
237 return VOP_FMT_YUV444SP;
238 default:
239 DRM_ERROR("unsupport format[%08x]\n", format);
240 return -EINVAL;
241 }
242 }
243
244 static bool is_yuv_support(uint32_t format)
245 {
246 switch (format) {
247 case DRM_FORMAT_NV12:
248 case DRM_FORMAT_NV16:
249 case DRM_FORMAT_NV24:
250 return true;
251 default:
252 return false;
253 }
254 }
255
256 static bool is_alpha_support(uint32_t format)
257 {
258 switch (format) {
259 case DRM_FORMAT_ARGB8888:
260 case DRM_FORMAT_ABGR8888:
261 return true;
262 default:
263 return false;
264 }
265 }
266
267 static uint16_t scl_vop_cal_scale(enum scale_mode mode, uint32_t src,
268 uint32_t dst, bool is_horizontal,
269 int vsu_mode, int *vskiplines)
270 {
271 uint16_t val = 1 << SCL_FT_DEFAULT_FIXPOINT_SHIFT;
272
273 if (is_horizontal) {
274 if (mode == SCALE_UP)
275 val = GET_SCL_FT_BIC(src, dst);
276 else if (mode == SCALE_DOWN)
277 val = GET_SCL_FT_BILI_DN(src, dst);
278 } else {
279 if (mode == SCALE_UP) {
280 if (vsu_mode == SCALE_UP_BIL)
281 val = GET_SCL_FT_BILI_UP(src, dst);
282 else
283 val = GET_SCL_FT_BIC(src, dst);
284 } else if (mode == SCALE_DOWN) {
285 if (vskiplines) {
286 *vskiplines = scl_get_vskiplines(src, dst);
287 val = scl_get_bili_dn_vskip(src, dst,
288 *vskiplines);
289 } else {
290 val = GET_SCL_FT_BILI_DN(src, dst);
291 }
292 }
293 }
294
295 return val;
296 }
297
298 static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
299 uint32_t src_w, uint32_t src_h, uint32_t dst_w,
300 uint32_t dst_h, uint32_t pixel_format)
301 {
302 uint16_t yrgb_hor_scl_mode, yrgb_ver_scl_mode;
303 uint16_t cbcr_hor_scl_mode = SCALE_NONE;
304 uint16_t cbcr_ver_scl_mode = SCALE_NONE;
305 int hsub = drm_format_horz_chroma_subsampling(pixel_format);
306 int vsub = drm_format_vert_chroma_subsampling(pixel_format);
307 bool is_yuv = is_yuv_support(pixel_format);
308 uint16_t cbcr_src_w = src_w / hsub;
309 uint16_t cbcr_src_h = src_h / vsub;
310 uint16_t vsu_mode;
311 uint16_t lb_mode;
312 uint32_t val;
313 int vskiplines;
314
315 if (dst_w > 3840) {
316 DRM_ERROR("Maximum destination width (3840) exceeded\n");
317 return;
318 }
319
320 if (!win->phy->scl->ext) {
321 VOP_SCL_SET(vop, win, scale_yrgb_x,
322 scl_cal_scale2(src_w, dst_w));
323 VOP_SCL_SET(vop, win, scale_yrgb_y,
324 scl_cal_scale2(src_h, dst_h));
325 if (is_yuv) {
326 VOP_SCL_SET(vop, win, scale_cbcr_x,
327 scl_cal_scale2(src_w, dst_w));
328 VOP_SCL_SET(vop, win, scale_cbcr_y,
329 scl_cal_scale2(src_h, dst_h));
330 }
331 return;
332 }
333
334 yrgb_hor_scl_mode = scl_get_scl_mode(src_w, dst_w);
335 yrgb_ver_scl_mode = scl_get_scl_mode(src_h, dst_h);
336
337 if (is_yuv) {
338 cbcr_hor_scl_mode = scl_get_scl_mode(cbcr_src_w, dst_w);
339 cbcr_ver_scl_mode = scl_get_scl_mode(cbcr_src_h, dst_h);
340 if (cbcr_hor_scl_mode == SCALE_DOWN)
341 lb_mode = scl_vop_cal_lb_mode(dst_w, true);
342 else
343 lb_mode = scl_vop_cal_lb_mode(cbcr_src_w, true);
344 } else {
345 if (yrgb_hor_scl_mode == SCALE_DOWN)
346 lb_mode = scl_vop_cal_lb_mode(dst_w, false);
347 else
348 lb_mode = scl_vop_cal_lb_mode(src_w, false);
349 }
350
351 VOP_SCL_SET_EXT(vop, win, lb_mode, lb_mode);
352 if (lb_mode == LB_RGB_3840X2) {
353 if (yrgb_ver_scl_mode != SCALE_NONE) {
354 DRM_ERROR("ERROR : not allow yrgb ver scale\n");
355 return;
356 }
357 if (cbcr_ver_scl_mode != SCALE_NONE) {
358 DRM_ERROR("ERROR : not allow cbcr ver scale\n");
359 return;
360 }
361 vsu_mode = SCALE_UP_BIL;
362 } else if (lb_mode == LB_RGB_2560X4) {
363 vsu_mode = SCALE_UP_BIL;
364 } else {
365 vsu_mode = SCALE_UP_BIC;
366 }
367
368 val = scl_vop_cal_scale(yrgb_hor_scl_mode, src_w, dst_w,
369 true, 0, NULL);
370 VOP_SCL_SET(vop, win, scale_yrgb_x, val);
371 val = scl_vop_cal_scale(yrgb_ver_scl_mode, src_h, dst_h,
372 false, vsu_mode, &vskiplines);
373 VOP_SCL_SET(vop, win, scale_yrgb_y, val);
374
375 VOP_SCL_SET_EXT(vop, win, vsd_yrgb_gt4, vskiplines == 4);
376 VOP_SCL_SET_EXT(vop, win, vsd_yrgb_gt2, vskiplines == 2);
377
378 VOP_SCL_SET_EXT(vop, win, yrgb_hor_scl_mode, yrgb_hor_scl_mode);
379 VOP_SCL_SET_EXT(vop, win, yrgb_ver_scl_mode, yrgb_ver_scl_mode);
380 VOP_SCL_SET_EXT(vop, win, yrgb_hsd_mode, SCALE_DOWN_BIL);
381 VOP_SCL_SET_EXT(vop, win, yrgb_vsd_mode, SCALE_DOWN_BIL);
382 VOP_SCL_SET_EXT(vop, win, yrgb_vsu_mode, vsu_mode);
383 if (is_yuv) {
384 val = scl_vop_cal_scale(cbcr_hor_scl_mode, cbcr_src_w,
385 dst_w, true, 0, NULL);
386 VOP_SCL_SET(vop, win, scale_cbcr_x, val);
387 val = scl_vop_cal_scale(cbcr_ver_scl_mode, cbcr_src_h,
388 dst_h, false, vsu_mode, &vskiplines);
389 VOP_SCL_SET(vop, win, scale_cbcr_y, val);
390
391 VOP_SCL_SET_EXT(vop, win, vsd_cbcr_gt4, vskiplines == 4);
392 VOP_SCL_SET_EXT(vop, win, vsd_cbcr_gt2, vskiplines == 2);
393 VOP_SCL_SET_EXT(vop, win, cbcr_hor_scl_mode, cbcr_hor_scl_mode);
394 VOP_SCL_SET_EXT(vop, win, cbcr_ver_scl_mode, cbcr_ver_scl_mode);
395 VOP_SCL_SET_EXT(vop, win, cbcr_hsd_mode, SCALE_DOWN_BIL);
396 VOP_SCL_SET_EXT(vop, win, cbcr_vsd_mode, SCALE_DOWN_BIL);
397 VOP_SCL_SET_EXT(vop, win, cbcr_vsu_mode, vsu_mode);
398 }
399 }
400
401 static void vop_dsp_hold_valid_irq_enable(struct vop *vop)
402 {
403 unsigned long flags;
404
405 if (WARN_ON(!vop->is_enabled))
406 return;
407
408 spin_lock_irqsave(&vop->irq_lock, flags);
409
410 VOP_INTR_SET_TYPE(vop, enable, DSP_HOLD_VALID_INTR, 1);
411
412 spin_unlock_irqrestore(&vop->irq_lock, flags);
413 }
414
415 static void vop_dsp_hold_valid_irq_disable(struct vop *vop)
416 {
417 unsigned long flags;
418
419 if (WARN_ON(!vop->is_enabled))
420 return;
421
422 spin_lock_irqsave(&vop->irq_lock, flags);
423
424 VOP_INTR_SET_TYPE(vop, enable, DSP_HOLD_VALID_INTR, 0);
425
426 spin_unlock_irqrestore(&vop->irq_lock, flags);
427 }
428
429 static void vop_enable(struct drm_crtc *crtc)
430 {
431 struct vop *vop = to_vop(crtc);
432 int ret;
433
434 if (vop->is_enabled)
435 return;
436
437 ret = pm_runtime_get_sync(vop->dev);
438 if (ret < 0) {
439 dev_err(vop->dev, "failed to get pm runtime: %d\n", ret);
440 return;
441 }
442
443 ret = clk_enable(vop->hclk);
444 if (ret < 0) {
445 dev_err(vop->dev, "failed to enable hclk - %d\n", ret);
446 return;
447 }
448
449 ret = clk_enable(vop->dclk);
450 if (ret < 0) {
451 dev_err(vop->dev, "failed to enable dclk - %d\n", ret);
452 goto err_disable_hclk;
453 }
454
455 ret = clk_enable(vop->aclk);
456 if (ret < 0) {
457 dev_err(vop->dev, "failed to enable aclk - %d\n", ret);
458 goto err_disable_dclk;
459 }
460
461 /*
462 * Slave iommu shares power, irq and clock with vop. It was associated
463 * automatically with this master device via common driver code.
464 * Now that we have enabled the clock we attach it to the shared drm
465 * mapping.
466 */
467 ret = rockchip_drm_dma_attach_device(vop->drm_dev, vop->dev);
468 if (ret) {
469 dev_err(vop->dev, "failed to attach dma mapping, %d\n", ret);
470 goto err_disable_aclk;
471 }
472
473 memcpy(vop->regs, vop->regsbak, vop->len);
474 /*
475 * At here, vop clock & iommu is enable, R/W vop regs would be safe.
476 */
477 vop->is_enabled = true;
478
479 spin_lock(&vop->reg_lock);
480
481 VOP_CTRL_SET(vop, standby, 0);
482
483 spin_unlock(&vop->reg_lock);
484
485 enable_irq(vop->irq);
486
487 drm_crtc_vblank_on(crtc);
488
489 return;
490
491 err_disable_aclk:
492 clk_disable(vop->aclk);
493 err_disable_dclk:
494 clk_disable(vop->dclk);
495 err_disable_hclk:
496 clk_disable(vop->hclk);
497 }
498
499 static void vop_crtc_disable(struct drm_crtc *crtc)
500 {
501 struct vop *vop = to_vop(crtc);
502 int i;
503
504 if (!vop->is_enabled)
505 return;
506
507 /*
508 * We need to make sure that all windows are disabled before we
509 * disable that crtc. Otherwise we might try to scan from a destroyed
510 * buffer later.
511 */
512 for (i = 0; i < vop->data->win_size; i++) {
513 struct vop_win *vop_win = &vop->win[i];
514 const struct vop_win_data *win = vop_win->data;
515
516 spin_lock(&vop->reg_lock);
517 VOP_WIN_SET(vop, win, enable, 0);
518 spin_unlock(&vop->reg_lock);
519 }
520
521 drm_crtc_vblank_off(crtc);
522
523 /*
524 * Vop standby will take effect at end of current frame,
525 * if dsp hold valid irq happen, it means standby complete.
526 *
527 * we must wait standby complete when we want to disable aclk,
528 * if not, memory bus maybe dead.
529 */
530 reinit_completion(&vop->dsp_hold_completion);
531 vop_dsp_hold_valid_irq_enable(vop);
532
533 spin_lock(&vop->reg_lock);
534
535 VOP_CTRL_SET(vop, standby, 1);
536
537 spin_unlock(&vop->reg_lock);
538
539 wait_for_completion(&vop->dsp_hold_completion);
540
541 vop_dsp_hold_valid_irq_disable(vop);
542
543 disable_irq(vop->irq);
544
545 vop->is_enabled = false;
546
547 /*
548 * vop standby complete, so iommu detach is safe.
549 */
550 rockchip_drm_dma_detach_device(vop->drm_dev, vop->dev);
551
552 clk_disable(vop->dclk);
553 clk_disable(vop->aclk);
554 clk_disable(vop->hclk);
555 pm_runtime_put(vop->dev);
556 }
557
558 static void vop_plane_destroy(struct drm_plane *plane)
559 {
560 drm_plane_cleanup(plane);
561 }
562
563 static int vop_plane_atomic_check(struct drm_plane *plane,
564 struct drm_plane_state *state)
565 {
566 struct drm_crtc *crtc = state->crtc;
567 struct drm_crtc_state *crtc_state;
568 struct drm_framebuffer *fb = state->fb;
569 struct vop_win *vop_win = to_vop_win(plane);
570 struct vop_plane_state *vop_plane_state = to_vop_plane_state(state);
571 const struct vop_win_data *win = vop_win->data;
572 bool visible;
573 int ret;
574 struct drm_rect *dest = &vop_plane_state->dest;
575 struct drm_rect *src = &vop_plane_state->src;
576 struct drm_rect clip;
577 int min_scale = win->phy->scl ? FRAC_16_16(1, 8) :
578 DRM_PLANE_HELPER_NO_SCALING;
579 int max_scale = win->phy->scl ? FRAC_16_16(8, 1) :
580 DRM_PLANE_HELPER_NO_SCALING;
581
582 if (!crtc || !fb)
583 goto out_disable;
584
585 crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
586 if (WARN_ON(!crtc_state))
587 return -EINVAL;
588
589 src->x1 = state->src_x;
590 src->y1 = state->src_y;
591 src->x2 = state->src_x + state->src_w;
592 src->y2 = state->src_y + state->src_h;
593 dest->x1 = state->crtc_x;
594 dest->y1 = state->crtc_y;
595 dest->x2 = state->crtc_x + state->crtc_w;
596 dest->y2 = state->crtc_y + state->crtc_h;
597
598 clip.x1 = 0;
599 clip.y1 = 0;
600 clip.x2 = crtc_state->adjusted_mode.hdisplay;
601 clip.y2 = crtc_state->adjusted_mode.vdisplay;
602
603 ret = drm_plane_helper_check_update(plane, crtc, state->fb,
604 src, dest, &clip,
605 min_scale,
606 max_scale,
607 true, true, &visible);
608 if (ret)
609 return ret;
610
611 if (!visible)
612 goto out_disable;
613
614 vop_plane_state->format = vop_convert_format(fb->pixel_format);
615 if (vop_plane_state->format < 0)
616 return vop_plane_state->format;
617
618 /*
619 * Src.x1 can be odd when do clip, but yuv plane start point
620 * need align with 2 pixel.
621 */
622 if (is_yuv_support(fb->pixel_format) && ((src->x1 >> 16) % 2))
623 return -EINVAL;
624
625 vop_plane_state->enable = true;
626
627 return 0;
628
629 out_disable:
630 vop_plane_state->enable = false;
631 return 0;
632 }
633
634 static void vop_plane_atomic_disable(struct drm_plane *plane,
635 struct drm_plane_state *old_state)
636 {
637 struct vop_plane_state *vop_plane_state = to_vop_plane_state(old_state);
638 struct vop_win *vop_win = to_vop_win(plane);
639 const struct vop_win_data *win = vop_win->data;
640 struct vop *vop = to_vop(old_state->crtc);
641
642 if (!old_state->crtc)
643 return;
644
645 spin_lock(&vop->reg_lock);
646
647 VOP_WIN_SET(vop, win, enable, 0);
648
649 spin_unlock(&vop->reg_lock);
650
651 vop_plane_state->enable = false;
652 }
653
654 static void vop_plane_atomic_update(struct drm_plane *plane,
655 struct drm_plane_state *old_state)
656 {
657 struct drm_plane_state *state = plane->state;
658 struct drm_crtc *crtc = state->crtc;
659 struct vop_win *vop_win = to_vop_win(plane);
660 struct vop_plane_state *vop_plane_state = to_vop_plane_state(state);
661 const struct vop_win_data *win = vop_win->data;
662 struct vop *vop = to_vop(state->crtc);
663 struct drm_framebuffer *fb = state->fb;
664 unsigned int actual_w, actual_h;
665 unsigned int dsp_stx, dsp_sty;
666 uint32_t act_info, dsp_info, dsp_st;
667 struct drm_rect *src = &vop_plane_state->src;
668 struct drm_rect *dest = &vop_plane_state->dest;
669 struct drm_gem_object *obj, *uv_obj;
670 struct rockchip_gem_object *rk_obj, *rk_uv_obj;
671 unsigned long offset;
672 dma_addr_t dma_addr;
673 uint32_t val;
674 bool rb_swap;
675
676 /*
677 * can't update plane when vop is disabled.
678 */
679 if (!crtc)
680 return;
681
682 if (WARN_ON(!vop->is_enabled))
683 return;
684
685 if (!vop_plane_state->enable) {
686 vop_plane_atomic_disable(plane, old_state);
687 return;
688 }
689
690 obj = rockchip_fb_get_gem_obj(fb, 0);
691 rk_obj = to_rockchip_obj(obj);
692
693 actual_w = drm_rect_width(src) >> 16;
694 actual_h = drm_rect_height(src) >> 16;
695 act_info = (actual_h - 1) << 16 | ((actual_w - 1) & 0xffff);
696
697 dsp_info = (drm_rect_height(dest) - 1) << 16;
698 dsp_info |= (drm_rect_width(dest) - 1) & 0xffff;
699
700 dsp_stx = dest->x1 + crtc->mode.htotal - crtc->mode.hsync_start;
701 dsp_sty = dest->y1 + crtc->mode.vtotal - crtc->mode.vsync_start;
702 dsp_st = dsp_sty << 16 | (dsp_stx & 0xffff);
703
704 offset = (src->x1 >> 16) * drm_format_plane_cpp(fb->pixel_format, 0);
705 offset += (src->y1 >> 16) * fb->pitches[0];
706 vop_plane_state->yrgb_mst = rk_obj->dma_addr + offset + fb->offsets[0];
707
708 spin_lock(&vop->reg_lock);
709
710 VOP_WIN_SET(vop, win, format, vop_plane_state->format);
711 VOP_WIN_SET(vop, win, yrgb_vir, fb->pitches[0] >> 2);
712 VOP_WIN_SET(vop, win, yrgb_mst, vop_plane_state->yrgb_mst);
713 if (is_yuv_support(fb->pixel_format)) {
714 int hsub = drm_format_horz_chroma_subsampling(fb->pixel_format);
715 int vsub = drm_format_vert_chroma_subsampling(fb->pixel_format);
716 int bpp = drm_format_plane_cpp(fb->pixel_format, 1);
717
718 uv_obj = rockchip_fb_get_gem_obj(fb, 1);
719 rk_uv_obj = to_rockchip_obj(uv_obj);
720
721 offset = (src->x1 >> 16) * bpp / hsub;
722 offset += (src->y1 >> 16) * fb->pitches[1] / vsub;
723
724 dma_addr = rk_uv_obj->dma_addr + offset + fb->offsets[1];
725 VOP_WIN_SET(vop, win, uv_vir, fb->pitches[1] >> 2);
726 VOP_WIN_SET(vop, win, uv_mst, dma_addr);
727 }
728
729 if (win->phy->scl)
730 scl_vop_cal_scl_fac(vop, win, actual_w, actual_h,
731 drm_rect_width(dest), drm_rect_height(dest),
732 fb->pixel_format);
733
734 VOP_WIN_SET(vop, win, act_info, act_info);
735 VOP_WIN_SET(vop, win, dsp_info, dsp_info);
736 VOP_WIN_SET(vop, win, dsp_st, dsp_st);
737
738 rb_swap = has_rb_swapped(fb->pixel_format);
739 VOP_WIN_SET(vop, win, rb_swap, rb_swap);
740
741 if (is_alpha_support(fb->pixel_format)) {
742 VOP_WIN_SET(vop, win, dst_alpha_ctl,
743 DST_FACTOR_M0(ALPHA_SRC_INVERSE));
744 val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(ALPHA_SRC_PRE_MUL) |
745 SRC_ALPHA_M0(ALPHA_STRAIGHT) |
746 SRC_BLEND_M0(ALPHA_PER_PIX) |
747 SRC_ALPHA_CAL_M0(ALPHA_NO_SATURATION) |
748 SRC_FACTOR_M0(ALPHA_ONE);
749 VOP_WIN_SET(vop, win, src_alpha_ctl, val);
750 } else {
751 VOP_WIN_SET(vop, win, src_alpha_ctl, SRC_ALPHA_EN(0));
752 }
753
754 VOP_WIN_SET(vop, win, enable, 1);
755 spin_unlock(&vop->reg_lock);
756 }
757
758 static const struct drm_plane_helper_funcs plane_helper_funcs = {
759 .atomic_check = vop_plane_atomic_check,
760 .atomic_update = vop_plane_atomic_update,
761 .atomic_disable = vop_plane_atomic_disable,
762 };
763
764 void vop_atomic_plane_reset(struct drm_plane *plane)
765 {
766 struct vop_plane_state *vop_plane_state =
767 to_vop_plane_state(plane->state);
768
769 if (plane->state && plane->state->fb)
770 drm_framebuffer_unreference(plane->state->fb);
771
772 kfree(vop_plane_state);
773 vop_plane_state = kzalloc(sizeof(*vop_plane_state), GFP_KERNEL);
774 if (!vop_plane_state)
775 return;
776
777 plane->state = &vop_plane_state->base;
778 plane->state->plane = plane;
779 }
780
781 struct drm_plane_state *
782 vop_atomic_plane_duplicate_state(struct drm_plane *plane)
783 {
784 struct vop_plane_state *old_vop_plane_state;
785 struct vop_plane_state *vop_plane_state;
786
787 if (WARN_ON(!plane->state))
788 return NULL;
789
790 old_vop_plane_state = to_vop_plane_state(plane->state);
791 vop_plane_state = kmemdup(old_vop_plane_state,
792 sizeof(*vop_plane_state), GFP_KERNEL);
793 if (!vop_plane_state)
794 return NULL;
795
796 __drm_atomic_helper_plane_duplicate_state(plane,
797 &vop_plane_state->base);
798
799 return &vop_plane_state->base;
800 }
801
802 static void vop_atomic_plane_destroy_state(struct drm_plane *plane,
803 struct drm_plane_state *state)
804 {
805 struct vop_plane_state *vop_state = to_vop_plane_state(state);
806
807 __drm_atomic_helper_plane_destroy_state(plane, state);
808
809 kfree(vop_state);
810 }
811
812 static const struct drm_plane_funcs vop_plane_funcs = {
813 .update_plane = drm_atomic_helper_update_plane,
814 .disable_plane = drm_atomic_helper_disable_plane,
815 .destroy = vop_plane_destroy,
816 .reset = vop_atomic_plane_reset,
817 .atomic_duplicate_state = vop_atomic_plane_duplicate_state,
818 .atomic_destroy_state = vop_atomic_plane_destroy_state,
819 };
820
821 int rockchip_drm_crtc_mode_config(struct drm_crtc *crtc,
822 int connector_type,
823 int out_mode)
824 {
825 struct vop *vop = to_vop(crtc);
826
827 if (WARN_ON(!vop->is_enabled))
828 return -EINVAL;
829
830 switch (connector_type) {
831 case DRM_MODE_CONNECTOR_LVDS:
832 VOP_CTRL_SET(vop, rgb_en, 1);
833 break;
834 case DRM_MODE_CONNECTOR_eDP:
835 VOP_CTRL_SET(vop, edp_en, 1);
836 break;
837 case DRM_MODE_CONNECTOR_HDMIA:
838 VOP_CTRL_SET(vop, hdmi_en, 1);
839 break;
840 case DRM_MODE_CONNECTOR_DSI:
841 VOP_CTRL_SET(vop, mipi_en, 1);
842 break;
843 default:
844 DRM_ERROR("unsupport connector_type[%d]\n", connector_type);
845 return -EINVAL;
846 };
847 VOP_CTRL_SET(vop, out_mode, out_mode);
848
849 return 0;
850 }
851 EXPORT_SYMBOL_GPL(rockchip_drm_crtc_mode_config);
852
853 static int vop_crtc_enable_vblank(struct drm_crtc *crtc)
854 {
855 struct vop *vop = to_vop(crtc);
856 unsigned long flags;
857
858 if (WARN_ON(!vop->is_enabled))
859 return -EPERM;
860
861 spin_lock_irqsave(&vop->irq_lock, flags);
862
863 VOP_INTR_SET_TYPE(vop, enable, FS_INTR, 1);
864
865 spin_unlock_irqrestore(&vop->irq_lock, flags);
866
867 return 0;
868 }
869
870 static void vop_crtc_disable_vblank(struct drm_crtc *crtc)
871 {
872 struct vop *vop = to_vop(crtc);
873 unsigned long flags;
874
875 if (WARN_ON(!vop->is_enabled))
876 return;
877
878 spin_lock_irqsave(&vop->irq_lock, flags);
879
880 VOP_INTR_SET_TYPE(vop, enable, FS_INTR, 0);
881
882 spin_unlock_irqrestore(&vop->irq_lock, flags);
883 }
884
885 static void vop_crtc_wait_for_update(struct drm_crtc *crtc)
886 {
887 struct vop *vop = to_vop(crtc);
888
889 reinit_completion(&vop->wait_update_complete);
890 WARN_ON(!wait_for_completion_timeout(&vop->wait_update_complete, 100));
891 }
892
893 static void vop_crtc_cancel_pending_vblank(struct drm_crtc *crtc,
894 struct drm_file *file_priv)
895 {
896 struct drm_device *drm = crtc->dev;
897 struct vop *vop = to_vop(crtc);
898 struct drm_pending_vblank_event *e;
899 unsigned long flags;
900
901 spin_lock_irqsave(&drm->event_lock, flags);
902 e = vop->event;
903 if (e && e->base.file_priv == file_priv) {
904 vop->event = NULL;
905
906 e->base.destroy(&e->base);
907 file_priv->event_space += sizeof(e->event);
908 }
909 spin_unlock_irqrestore(&drm->event_lock, flags);
910 }
911
912 static const struct rockchip_crtc_funcs private_crtc_funcs = {
913 .enable_vblank = vop_crtc_enable_vblank,
914 .disable_vblank = vop_crtc_disable_vblank,
915 .wait_for_update = vop_crtc_wait_for_update,
916 .cancel_pending_vblank = vop_crtc_cancel_pending_vblank,
917 };
918
919 static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
920 const struct drm_display_mode *mode,
921 struct drm_display_mode *adjusted_mode)
922 {
923 struct vop *vop = to_vop(crtc);
924
925 adjusted_mode->clock =
926 clk_round_rate(vop->dclk, mode->clock * 1000) / 1000;
927
928 return true;
929 }
930
931 static void vop_crtc_enable(struct drm_crtc *crtc)
932 {
933 struct vop *vop = to_vop(crtc);
934 struct drm_display_mode *adjusted_mode = &crtc->state->adjusted_mode;
935 u16 hsync_len = adjusted_mode->hsync_end - adjusted_mode->hsync_start;
936 u16 hdisplay = adjusted_mode->hdisplay;
937 u16 htotal = adjusted_mode->htotal;
938 u16 hact_st = adjusted_mode->htotal - adjusted_mode->hsync_start;
939 u16 hact_end = hact_st + hdisplay;
940 u16 vdisplay = adjusted_mode->vdisplay;
941 u16 vtotal = adjusted_mode->vtotal;
942 u16 vsync_len = adjusted_mode->vsync_end - adjusted_mode->vsync_start;
943 u16 vact_st = adjusted_mode->vtotal - adjusted_mode->vsync_start;
944 u16 vact_end = vact_st + vdisplay;
945 uint32_t val;
946
947 vop_enable(crtc);
948 /*
949 * If dclk rate is zero, mean that scanout is stop,
950 * we don't need wait any more.
951 */
952 if (clk_get_rate(vop->dclk)) {
953 /*
954 * Rk3288 vop timing register is immediately, when configure
955 * display timing on display time, may cause tearing.
956 *
957 * Vop standby will take effect at end of current frame,
958 * if dsp hold valid irq happen, it means standby complete.
959 *
960 * mode set:
961 * standby and wait complete --> |----
962 * | display time
963 * |----
964 * |---> dsp hold irq
965 * configure display timing --> |
966 * standby exit |
967 * | new frame start.
968 */
969
970 reinit_completion(&vop->dsp_hold_completion);
971 vop_dsp_hold_valid_irq_enable(vop);
972
973 spin_lock(&vop->reg_lock);
974
975 VOP_CTRL_SET(vop, standby, 1);
976
977 spin_unlock(&vop->reg_lock);
978
979 wait_for_completion(&vop->dsp_hold_completion);
980
981 vop_dsp_hold_valid_irq_disable(vop);
982 }
983
984 val = 0x8;
985 val |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1;
986 val |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : (1 << 1);
987 VOP_CTRL_SET(vop, pin_pol, val);
988
989 VOP_CTRL_SET(vop, htotal_pw, (htotal << 16) | hsync_len);
990 val = hact_st << 16;
991 val |= hact_end;
992 VOP_CTRL_SET(vop, hact_st_end, val);
993 VOP_CTRL_SET(vop, hpost_st_end, val);
994
995 VOP_CTRL_SET(vop, vtotal_pw, (vtotal << 16) | vsync_len);
996 val = vact_st << 16;
997 val |= vact_end;
998 VOP_CTRL_SET(vop, vact_st_end, val);
999 VOP_CTRL_SET(vop, vpost_st_end, val);
1000
1001 clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
1002
1003 VOP_CTRL_SET(vop, standby, 0);
1004 }
1005
1006 static void vop_crtc_atomic_flush(struct drm_crtc *crtc,
1007 struct drm_crtc_state *old_crtc_state)
1008 {
1009 struct vop *vop = to_vop(crtc);
1010
1011 if (WARN_ON(!vop->is_enabled))
1012 return;
1013
1014 spin_lock(&vop->reg_lock);
1015
1016 vop_cfg_done(vop);
1017
1018 spin_unlock(&vop->reg_lock);
1019 }
1020
1021 static void vop_crtc_atomic_begin(struct drm_crtc *crtc,
1022 struct drm_crtc_state *old_crtc_state)
1023 {
1024 struct vop *vop = to_vop(crtc);
1025
1026 if (crtc->state->event) {
1027 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
1028
1029 vop->event = crtc->state->event;
1030 crtc->state->event = NULL;
1031 }
1032 }
1033
1034 static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = {
1035 .enable = vop_crtc_enable,
1036 .disable = vop_crtc_disable,
1037 .mode_fixup = vop_crtc_mode_fixup,
1038 .atomic_flush = vop_crtc_atomic_flush,
1039 .atomic_begin = vop_crtc_atomic_begin,
1040 };
1041
1042 static void vop_crtc_destroy(struct drm_crtc *crtc)
1043 {
1044 drm_crtc_cleanup(crtc);
1045 }
1046
1047 static const struct drm_crtc_funcs vop_crtc_funcs = {
1048 .set_config = drm_atomic_helper_set_config,
1049 .page_flip = drm_atomic_helper_page_flip,
1050 .destroy = vop_crtc_destroy,
1051 .reset = drm_atomic_helper_crtc_reset,
1052 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
1053 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
1054 };
1055
1056 static bool vop_win_pending_is_complete(struct vop_win *vop_win)
1057 {
1058 struct drm_plane *plane = &vop_win->base;
1059 struct vop_plane_state *state = to_vop_plane_state(plane->state);
1060 dma_addr_t yrgb_mst;
1061
1062 if (!state->enable)
1063 return VOP_WIN_GET(vop_win->vop, vop_win->data, enable) == 0;
1064
1065 yrgb_mst = VOP_WIN_GET_YRGBADDR(vop_win->vop, vop_win->data);
1066
1067 return yrgb_mst == state->yrgb_mst;
1068 }
1069
1070 static void vop_handle_vblank(struct vop *vop)
1071 {
1072 struct drm_device *drm = vop->drm_dev;
1073 struct drm_crtc *crtc = &vop->crtc;
1074 unsigned long flags;
1075 int i;
1076
1077 for (i = 0; i < vop->data->win_size; i++) {
1078 if (!vop_win_pending_is_complete(&vop->win[i]))
1079 return;
1080 }
1081
1082 if (vop->event) {
1083 spin_lock_irqsave(&drm->event_lock, flags);
1084
1085 drm_crtc_send_vblank_event(crtc, vop->event);
1086 drm_crtc_vblank_put(crtc);
1087 vop->event = NULL;
1088
1089 spin_unlock_irqrestore(&drm->event_lock, flags);
1090 }
1091 if (!completion_done(&vop->wait_update_complete))
1092 complete(&vop->wait_update_complete);
1093 }
1094
1095 static irqreturn_t vop_isr(int irq, void *data)
1096 {
1097 struct vop *vop = data;
1098 struct drm_crtc *crtc = &vop->crtc;
1099 uint32_t active_irqs;
1100 unsigned long flags;
1101 int ret = IRQ_NONE;
1102
1103 /*
1104 * interrupt register has interrupt status, enable and clear bits, we
1105 * must hold irq_lock to avoid a race with enable/disable_vblank().
1106 */
1107 spin_lock_irqsave(&vop->irq_lock, flags);
1108
1109 active_irqs = VOP_INTR_GET_TYPE(vop, status, INTR_MASK);
1110 /* Clear all active interrupt sources */
1111 if (active_irqs)
1112 VOP_INTR_SET_TYPE(vop, clear, active_irqs, 1);
1113
1114 spin_unlock_irqrestore(&vop->irq_lock, flags);
1115
1116 /* This is expected for vop iommu irqs, since the irq is shared */
1117 if (!active_irqs)
1118 return IRQ_NONE;
1119
1120 if (active_irqs & DSP_HOLD_VALID_INTR) {
1121 complete(&vop->dsp_hold_completion);
1122 active_irqs &= ~DSP_HOLD_VALID_INTR;
1123 ret = IRQ_HANDLED;
1124 }
1125
1126 if (active_irqs & FS_INTR) {
1127 drm_crtc_handle_vblank(crtc);
1128 vop_handle_vblank(vop);
1129 active_irqs &= ~FS_INTR;
1130 ret = IRQ_HANDLED;
1131 }
1132
1133 /* Unhandled irqs are spurious. */
1134 if (active_irqs)
1135 DRM_ERROR("Unknown VOP IRQs: %#02x\n", active_irqs);
1136
1137 return ret;
1138 }
1139
1140 static int vop_create_crtc(struct vop *vop)
1141 {
1142 const struct vop_data *vop_data = vop->data;
1143 struct device *dev = vop->dev;
1144 struct drm_device *drm_dev = vop->drm_dev;
1145 struct drm_plane *primary = NULL, *cursor = NULL, *plane, *tmp;
1146 struct drm_crtc *crtc = &vop->crtc;
1147 struct device_node *port;
1148 int ret;
1149 int i;
1150
1151 /*
1152 * Create drm_plane for primary and cursor planes first, since we need
1153 * to pass them to drm_crtc_init_with_planes, which sets the
1154 * "possible_crtcs" to the newly initialized crtc.
1155 */
1156 for (i = 0; i < vop_data->win_size; i++) {
1157 struct vop_win *vop_win = &vop->win[i];
1158 const struct vop_win_data *win_data = vop_win->data;
1159
1160 if (win_data->type != DRM_PLANE_TYPE_PRIMARY &&
1161 win_data->type != DRM_PLANE_TYPE_CURSOR)
1162 continue;
1163
1164 ret = drm_universal_plane_init(vop->drm_dev, &vop_win->base,
1165 0, &vop_plane_funcs,
1166 win_data->phy->data_formats,
1167 win_data->phy->nformats,
1168 win_data->type, NULL);
1169 if (ret) {
1170 DRM_ERROR("failed to initialize plane\n");
1171 goto err_cleanup_planes;
1172 }
1173
1174 plane = &vop_win->base;
1175 drm_plane_helper_add(plane, &plane_helper_funcs);
1176 if (plane->type == DRM_PLANE_TYPE_PRIMARY)
1177 primary = plane;
1178 else if (plane->type == DRM_PLANE_TYPE_CURSOR)
1179 cursor = plane;
1180 }
1181
1182 ret = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
1183 &vop_crtc_funcs, NULL);
1184 if (ret)
1185 goto err_cleanup_planes;
1186
1187 drm_crtc_helper_add(crtc, &vop_crtc_helper_funcs);
1188
1189 /*
1190 * Create drm_planes for overlay windows with possible_crtcs restricted
1191 * to the newly created crtc.
1192 */
1193 for (i = 0; i < vop_data->win_size; i++) {
1194 struct vop_win *vop_win = &vop->win[i];
1195 const struct vop_win_data *win_data = vop_win->data;
1196 unsigned long possible_crtcs = 1 << drm_crtc_index(crtc);
1197
1198 if (win_data->type != DRM_PLANE_TYPE_OVERLAY)
1199 continue;
1200
1201 ret = drm_universal_plane_init(vop->drm_dev, &vop_win->base,
1202 possible_crtcs,
1203 &vop_plane_funcs,
1204 win_data->phy->data_formats,
1205 win_data->phy->nformats,
1206 win_data->type, NULL);
1207 if (ret) {
1208 DRM_ERROR("failed to initialize overlay plane\n");
1209 goto err_cleanup_crtc;
1210 }
1211 drm_plane_helper_add(&vop_win->base, &plane_helper_funcs);
1212 }
1213
1214 port = of_get_child_by_name(dev->of_node, "port");
1215 if (!port) {
1216 DRM_ERROR("no port node found in %s\n",
1217 dev->of_node->full_name);
1218 ret = -ENOENT;
1219 goto err_cleanup_crtc;
1220 }
1221
1222 init_completion(&vop->dsp_hold_completion);
1223 init_completion(&vop->wait_update_complete);
1224 crtc->port = port;
1225 rockchip_register_crtc_funcs(crtc, &private_crtc_funcs);
1226
1227 return 0;
1228
1229 err_cleanup_crtc:
1230 drm_crtc_cleanup(crtc);
1231 err_cleanup_planes:
1232 list_for_each_entry_safe(plane, tmp, &drm_dev->mode_config.plane_list,
1233 head)
1234 drm_plane_cleanup(plane);
1235 return ret;
1236 }
1237
1238 static void vop_destroy_crtc(struct vop *vop)
1239 {
1240 struct drm_crtc *crtc = &vop->crtc;
1241 struct drm_device *drm_dev = vop->drm_dev;
1242 struct drm_plane *plane, *tmp;
1243
1244 rockchip_unregister_crtc_funcs(crtc);
1245 of_node_put(crtc->port);
1246
1247 /*
1248 * We need to cleanup the planes now. Why?
1249 *
1250 * The planes are "&vop->win[i].base". That means the memory is
1251 * all part of the big "struct vop" chunk of memory. That memory
1252 * was devm allocated and associated with this component. We need to
1253 * free it ourselves before vop_unbind() finishes.
1254 */
1255 list_for_each_entry_safe(plane, tmp, &drm_dev->mode_config.plane_list,
1256 head)
1257 vop_plane_destroy(plane);
1258
1259 /*
1260 * Destroy CRTC after vop_plane_destroy() since vop_disable_plane()
1261 * references the CRTC.
1262 */
1263 drm_crtc_cleanup(crtc);
1264 }
1265
1266 static int vop_initial(struct vop *vop)
1267 {
1268 const struct vop_data *vop_data = vop->data;
1269 const struct vop_reg_data *init_table = vop_data->init_table;
1270 struct reset_control *ahb_rst;
1271 int i, ret;
1272
1273 vop->hclk = devm_clk_get(vop->dev, "hclk_vop");
1274 if (IS_ERR(vop->hclk)) {
1275 dev_err(vop->dev, "failed to get hclk source\n");
1276 return PTR_ERR(vop->hclk);
1277 }
1278 vop->aclk = devm_clk_get(vop->dev, "aclk_vop");
1279 if (IS_ERR(vop->aclk)) {
1280 dev_err(vop->dev, "failed to get aclk source\n");
1281 return PTR_ERR(vop->aclk);
1282 }
1283 vop->dclk = devm_clk_get(vop->dev, "dclk_vop");
1284 if (IS_ERR(vop->dclk)) {
1285 dev_err(vop->dev, "failed to get dclk source\n");
1286 return PTR_ERR(vop->dclk);
1287 }
1288
1289 ret = clk_prepare(vop->dclk);
1290 if (ret < 0) {
1291 dev_err(vop->dev, "failed to prepare dclk\n");
1292 return ret;
1293 }
1294
1295 /* Enable both the hclk and aclk to setup the vop */
1296 ret = clk_prepare_enable(vop->hclk);
1297 if (ret < 0) {
1298 dev_err(vop->dev, "failed to prepare/enable hclk\n");
1299 goto err_unprepare_dclk;
1300 }
1301
1302 ret = clk_prepare_enable(vop->aclk);
1303 if (ret < 0) {
1304 dev_err(vop->dev, "failed to prepare/enable aclk\n");
1305 goto err_disable_hclk;
1306 }
1307
1308 /*
1309 * do hclk_reset, reset all vop registers.
1310 */
1311 ahb_rst = devm_reset_control_get(vop->dev, "ahb");
1312 if (IS_ERR(ahb_rst)) {
1313 dev_err(vop->dev, "failed to get ahb reset\n");
1314 ret = PTR_ERR(ahb_rst);
1315 goto err_disable_aclk;
1316 }
1317 reset_control_assert(ahb_rst);
1318 usleep_range(10, 20);
1319 reset_control_deassert(ahb_rst);
1320
1321 memcpy(vop->regsbak, vop->regs, vop->len);
1322
1323 for (i = 0; i < vop_data->table_size; i++)
1324 vop_writel(vop, init_table[i].offset, init_table[i].value);
1325
1326 for (i = 0; i < vop_data->win_size; i++) {
1327 const struct vop_win_data *win = &vop_data->win[i];
1328
1329 VOP_WIN_SET(vop, win, enable, 0);
1330 }
1331
1332 vop_cfg_done(vop);
1333
1334 /*
1335 * do dclk_reset, let all config take affect.
1336 */
1337 vop->dclk_rst = devm_reset_control_get(vop->dev, "dclk");
1338 if (IS_ERR(vop->dclk_rst)) {
1339 dev_err(vop->dev, "failed to get dclk reset\n");
1340 ret = PTR_ERR(vop->dclk_rst);
1341 goto err_disable_aclk;
1342 }
1343 reset_control_assert(vop->dclk_rst);
1344 usleep_range(10, 20);
1345 reset_control_deassert(vop->dclk_rst);
1346
1347 clk_disable(vop->hclk);
1348 clk_disable(vop->aclk);
1349
1350 vop->is_enabled = false;
1351
1352 return 0;
1353
1354 err_disable_aclk:
1355 clk_disable_unprepare(vop->aclk);
1356 err_disable_hclk:
1357 clk_disable_unprepare(vop->hclk);
1358 err_unprepare_dclk:
1359 clk_unprepare(vop->dclk);
1360 return ret;
1361 }
1362
1363 /*
1364 * Initialize the vop->win array elements.
1365 */
1366 static void vop_win_init(struct vop *vop)
1367 {
1368 const struct vop_data *vop_data = vop->data;
1369 unsigned int i;
1370
1371 for (i = 0; i < vop_data->win_size; i++) {
1372 struct vop_win *vop_win = &vop->win[i];
1373 const struct vop_win_data *win_data = &vop_data->win[i];
1374
1375 vop_win->data = win_data;
1376 vop_win->vop = vop;
1377 }
1378 }
1379
1380 static int vop_bind(struct device *dev, struct device *master, void *data)
1381 {
1382 struct platform_device *pdev = to_platform_device(dev);
1383 const struct vop_data *vop_data;
1384 struct drm_device *drm_dev = data;
1385 struct vop *vop;
1386 struct resource *res;
1387 size_t alloc_size;
1388 int ret, irq;
1389
1390 vop_data = of_device_get_match_data(dev);
1391 if (!vop_data)
1392 return -ENODEV;
1393
1394 /* Allocate vop struct and its vop_win array */
1395 alloc_size = sizeof(*vop) + sizeof(*vop->win) * vop_data->win_size;
1396 vop = devm_kzalloc(dev, alloc_size, GFP_KERNEL);
1397 if (!vop)
1398 return -ENOMEM;
1399
1400 vop->dev = dev;
1401 vop->data = vop_data;
1402 vop->drm_dev = drm_dev;
1403 dev_set_drvdata(dev, vop);
1404
1405 vop_win_init(vop);
1406
1407 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1408 vop->len = resource_size(res);
1409 vop->regs = devm_ioremap_resource(dev, res);
1410 if (IS_ERR(vop->regs))
1411 return PTR_ERR(vop->regs);
1412
1413 vop->regsbak = devm_kzalloc(dev, vop->len, GFP_KERNEL);
1414 if (!vop->regsbak)
1415 return -ENOMEM;
1416
1417 ret = vop_initial(vop);
1418 if (ret < 0) {
1419 dev_err(&pdev->dev, "cannot initial vop dev - err %d\n", ret);
1420 return ret;
1421 }
1422
1423 irq = platform_get_irq(pdev, 0);
1424 if (irq < 0) {
1425 dev_err(dev, "cannot find irq for vop\n");
1426 return irq;
1427 }
1428 vop->irq = (unsigned int)irq;
1429
1430 spin_lock_init(&vop->reg_lock);
1431 spin_lock_init(&vop->irq_lock);
1432
1433 mutex_init(&vop->vsync_mutex);
1434
1435 ret = devm_request_irq(dev, vop->irq, vop_isr,
1436 IRQF_SHARED, dev_name(dev), vop);
1437 if (ret)
1438 return ret;
1439
1440 /* IRQ is initially disabled; it gets enabled in power_on */
1441 disable_irq(vop->irq);
1442
1443 ret = vop_create_crtc(vop);
1444 if (ret)
1445 return ret;
1446
1447 pm_runtime_enable(&pdev->dev);
1448 return 0;
1449 }
1450
1451 static void vop_unbind(struct device *dev, struct device *master, void *data)
1452 {
1453 struct vop *vop = dev_get_drvdata(dev);
1454
1455 pm_runtime_disable(dev);
1456 vop_destroy_crtc(vop);
1457 }
1458
1459 const struct component_ops vop_component_ops = {
1460 .bind = vop_bind,
1461 .unbind = vop_unbind,
1462 };
1463 EXPORT_SYMBOL_GPL(vop_component_ops);
Linux kernel - Deliverables
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