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bea8a429 EK |
1 | /* |
2 | * Copyright (C) 2012 Samsung Electronics Co.Ltd | |
3 | * Authors: | |
4 | * YoungJun Cho <yj44.cho@samsung.com> | |
5 | * Eunchul Kim <chulspro.kim@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundationr | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/err.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/io.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/clk.h> | |
19 | #include <linux/pm_runtime.h> | |
20 | ||
21 | #include <drm/drmP.h> | |
22 | #include <drm/exynos_drm.h> | |
23 | #include "regs-rotator.h" | |
24 | #include "exynos_drm.h" | |
25 | #include "exynos_drm_ipp.h" | |
26 | ||
27 | /* | |
28 | * Rotator supports image crop/rotator and input/output DMA operations. | |
29 | * input DMA reads image data from the memory. | |
30 | * output DMA writes image data to memory. | |
31 | * | |
32 | * M2M operation : supports crop/scale/rotation/csc so on. | |
33 | * Memory ----> Rotator H/W ----> Memory. | |
34 | */ | |
35 | ||
36 | /* | |
37 | * TODO | |
38 | * 1. check suspend/resume api if needed. | |
39 | * 2. need to check use case platform_device_id. | |
40 | * 3. check src/dst size with, height. | |
41 | * 4. need to add supported list in prop_list. | |
42 | */ | |
43 | ||
44 | #define get_rot_context(dev) platform_get_drvdata(to_platform_device(dev)) | |
45 | #define get_ctx_from_ippdrv(ippdrv) container_of(ippdrv,\ | |
46 | struct rot_context, ippdrv); | |
47 | #define rot_read(offset) readl(rot->regs + (offset)) | |
48 | #define rot_write(cfg, offset) writel(cfg, rot->regs + (offset)) | |
49 | ||
50 | enum rot_irq_status { | |
51 | ROT_IRQ_STATUS_COMPLETE = 8, | |
52 | ROT_IRQ_STATUS_ILLEGAL = 9, | |
53 | }; | |
54 | ||
55 | /* | |
56 | * A structure of limitation. | |
57 | * | |
58 | * @min_w: minimum width. | |
59 | * @min_h: minimum height. | |
60 | * @max_w: maximum width. | |
61 | * @max_h: maximum height. | |
62 | * @align: align size. | |
63 | */ | |
64 | struct rot_limit { | |
65 | u32 min_w; | |
66 | u32 min_h; | |
67 | u32 max_w; | |
68 | u32 max_h; | |
69 | u32 align; | |
70 | }; | |
71 | ||
72 | /* | |
73 | * A structure of limitation table. | |
74 | * | |
75 | * @ycbcr420_2p: case of YUV. | |
76 | * @rgb888: case of RGB. | |
77 | */ | |
78 | struct rot_limit_table { | |
79 | struct rot_limit ycbcr420_2p; | |
80 | struct rot_limit rgb888; | |
81 | }; | |
82 | ||
83 | /* | |
84 | * A structure of rotator context. | |
85 | * @ippdrv: prepare initialization using ippdrv. | |
86 | * @regs_res: register resources. | |
87 | * @regs: memory mapped io registers. | |
88 | * @clock: rotator gate clock. | |
89 | * @limit_tbl: limitation of rotator. | |
90 | * @irq: irq number. | |
91 | * @cur_buf_id: current operation buffer id. | |
92 | * @suspended: suspended state. | |
93 | */ | |
94 | struct rot_context { | |
95 | struct exynos_drm_ippdrv ippdrv; | |
96 | struct resource *regs_res; | |
97 | void __iomem *regs; | |
98 | struct clk *clock; | |
99 | struct rot_limit_table *limit_tbl; | |
100 | int irq; | |
101 | int cur_buf_id[EXYNOS_DRM_OPS_MAX]; | |
102 | bool suspended; | |
103 | }; | |
104 | ||
105 | static void rotator_reg_set_irq(struct rot_context *rot, bool enable) | |
106 | { | |
107 | u32 val = rot_read(ROT_CONFIG); | |
108 | ||
109 | if (enable == true) | |
110 | val |= ROT_CONFIG_IRQ; | |
111 | else | |
112 | val &= ~ROT_CONFIG_IRQ; | |
113 | ||
114 | rot_write(val, ROT_CONFIG); | |
115 | } | |
116 | ||
117 | static u32 rotator_reg_get_fmt(struct rot_context *rot) | |
118 | { | |
119 | u32 val = rot_read(ROT_CONTROL); | |
120 | ||
121 | val &= ROT_CONTROL_FMT_MASK; | |
122 | ||
123 | return val; | |
124 | } | |
125 | ||
126 | static enum rot_irq_status rotator_reg_get_irq_status(struct rot_context *rot) | |
127 | { | |
128 | u32 val = rot_read(ROT_STATUS); | |
129 | ||
130 | val = ROT_STATUS_IRQ(val); | |
131 | ||
132 | if (val == ROT_STATUS_IRQ_VAL_COMPLETE) | |
133 | return ROT_IRQ_STATUS_COMPLETE; | |
134 | ||
135 | return ROT_IRQ_STATUS_ILLEGAL; | |
136 | } | |
137 | ||
138 | static irqreturn_t rotator_irq_handler(int irq, void *arg) | |
139 | { | |
140 | struct rot_context *rot = arg; | |
141 | struct exynos_drm_ippdrv *ippdrv = &rot->ippdrv; | |
7259c3d6 | 142 | struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node; |
bea8a429 EK |
143 | struct drm_exynos_ipp_event_work *event_work = c_node->event_work; |
144 | enum rot_irq_status irq_status; | |
145 | u32 val; | |
146 | ||
147 | /* Get execution result */ | |
148 | irq_status = rotator_reg_get_irq_status(rot); | |
149 | ||
150 | /* clear status */ | |
151 | val = rot_read(ROT_STATUS); | |
152 | val |= ROT_STATUS_IRQ_PENDING((u32)irq_status); | |
153 | rot_write(val, ROT_STATUS); | |
154 | ||
155 | if (irq_status == ROT_IRQ_STATUS_COMPLETE) { | |
156 | event_work->ippdrv = ippdrv; | |
157 | event_work->buf_id[EXYNOS_DRM_OPS_DST] = | |
158 | rot->cur_buf_id[EXYNOS_DRM_OPS_DST]; | |
159 | queue_work(ippdrv->event_workq, | |
160 | (struct work_struct *)event_work); | |
161 | } else | |
162 | DRM_ERROR("the SFR is set illegally\n"); | |
163 | ||
164 | return IRQ_HANDLED; | |
165 | } | |
166 | ||
167 | static void rotator_align_size(struct rot_context *rot, u32 fmt, u32 *hsize, | |
168 | u32 *vsize) | |
169 | { | |
170 | struct rot_limit_table *limit_tbl = rot->limit_tbl; | |
171 | struct rot_limit *limit; | |
172 | u32 mask, val; | |
173 | ||
174 | /* Get size limit */ | |
175 | if (fmt == ROT_CONTROL_FMT_RGB888) | |
176 | limit = &limit_tbl->rgb888; | |
177 | else | |
178 | limit = &limit_tbl->ycbcr420_2p; | |
179 | ||
180 | /* Get mask for rounding to nearest aligned val */ | |
181 | mask = ~((1 << limit->align) - 1); | |
182 | ||
183 | /* Set aligned width */ | |
184 | val = ROT_ALIGN(*hsize, limit->align, mask); | |
185 | if (val < limit->min_w) | |
186 | *hsize = ROT_MIN(limit->min_w, mask); | |
187 | else if (val > limit->max_w) | |
188 | *hsize = ROT_MAX(limit->max_w, mask); | |
189 | else | |
190 | *hsize = val; | |
191 | ||
192 | /* Set aligned height */ | |
193 | val = ROT_ALIGN(*vsize, limit->align, mask); | |
194 | if (val < limit->min_h) | |
195 | *vsize = ROT_MIN(limit->min_h, mask); | |
196 | else if (val > limit->max_h) | |
197 | *vsize = ROT_MAX(limit->max_h, mask); | |
198 | else | |
199 | *vsize = val; | |
200 | } | |
201 | ||
202 | static int rotator_src_set_fmt(struct device *dev, u32 fmt) | |
203 | { | |
204 | struct rot_context *rot = dev_get_drvdata(dev); | |
205 | u32 val; | |
206 | ||
207 | val = rot_read(ROT_CONTROL); | |
208 | val &= ~ROT_CONTROL_FMT_MASK; | |
209 | ||
210 | switch (fmt) { | |
211 | case DRM_FORMAT_NV12: | |
212 | val |= ROT_CONTROL_FMT_YCBCR420_2P; | |
213 | break; | |
214 | case DRM_FORMAT_XRGB8888: | |
215 | val |= ROT_CONTROL_FMT_RGB888; | |
216 | break; | |
217 | default: | |
218 | DRM_ERROR("invalid image format\n"); | |
219 | return -EINVAL; | |
220 | } | |
221 | ||
222 | rot_write(val, ROT_CONTROL); | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | static inline bool rotator_check_reg_fmt(u32 fmt) | |
228 | { | |
229 | if ((fmt == ROT_CONTROL_FMT_YCBCR420_2P) || | |
230 | (fmt == ROT_CONTROL_FMT_RGB888)) | |
231 | return true; | |
232 | ||
233 | return false; | |
234 | } | |
235 | ||
236 | static int rotator_src_set_size(struct device *dev, int swap, | |
237 | struct drm_exynos_pos *pos, | |
238 | struct drm_exynos_sz *sz) | |
239 | { | |
240 | struct rot_context *rot = dev_get_drvdata(dev); | |
241 | u32 fmt, hsize, vsize; | |
242 | u32 val; | |
243 | ||
244 | /* Get format */ | |
245 | fmt = rotator_reg_get_fmt(rot); | |
246 | if (!rotator_check_reg_fmt(fmt)) { | |
247 | DRM_ERROR("%s:invalid format.\n", __func__); | |
248 | return -EINVAL; | |
249 | } | |
250 | ||
251 | /* Align buffer size */ | |
252 | hsize = sz->hsize; | |
253 | vsize = sz->vsize; | |
254 | rotator_align_size(rot, fmt, &hsize, &vsize); | |
255 | ||
256 | /* Set buffer size configuration */ | |
257 | val = ROT_SET_BUF_SIZE_H(vsize) | ROT_SET_BUF_SIZE_W(hsize); | |
258 | rot_write(val, ROT_SRC_BUF_SIZE); | |
259 | ||
260 | /* Set crop image position configuration */ | |
261 | val = ROT_CROP_POS_Y(pos->y) | ROT_CROP_POS_X(pos->x); | |
262 | rot_write(val, ROT_SRC_CROP_POS); | |
263 | val = ROT_SRC_CROP_SIZE_H(pos->h) | ROT_SRC_CROP_SIZE_W(pos->w); | |
264 | rot_write(val, ROT_SRC_CROP_SIZE); | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
269 | static int rotator_src_set_addr(struct device *dev, | |
270 | struct drm_exynos_ipp_buf_info *buf_info, | |
271 | u32 buf_id, enum drm_exynos_ipp_buf_type buf_type) | |
272 | { | |
273 | struct rot_context *rot = dev_get_drvdata(dev); | |
274 | dma_addr_t addr[EXYNOS_DRM_PLANAR_MAX]; | |
275 | u32 val, fmt, hsize, vsize; | |
276 | int i; | |
277 | ||
278 | /* Set current buf_id */ | |
279 | rot->cur_buf_id[EXYNOS_DRM_OPS_SRC] = buf_id; | |
280 | ||
281 | switch (buf_type) { | |
282 | case IPP_BUF_ENQUEUE: | |
283 | /* Set address configuration */ | |
284 | for_each_ipp_planar(i) | |
285 | addr[i] = buf_info->base[i]; | |
286 | ||
287 | /* Get format */ | |
288 | fmt = rotator_reg_get_fmt(rot); | |
289 | if (!rotator_check_reg_fmt(fmt)) { | |
290 | DRM_ERROR("%s:invalid format.\n", __func__); | |
291 | return -EINVAL; | |
292 | } | |
293 | ||
294 | /* Re-set cb planar for NV12 format */ | |
295 | if ((fmt == ROT_CONTROL_FMT_YCBCR420_2P) && | |
296 | !addr[EXYNOS_DRM_PLANAR_CB]) { | |
297 | ||
298 | val = rot_read(ROT_SRC_BUF_SIZE); | |
299 | hsize = ROT_GET_BUF_SIZE_W(val); | |
300 | vsize = ROT_GET_BUF_SIZE_H(val); | |
301 | ||
302 | /* Set cb planar */ | |
303 | addr[EXYNOS_DRM_PLANAR_CB] = | |
304 | addr[EXYNOS_DRM_PLANAR_Y] + hsize * vsize; | |
305 | } | |
306 | ||
307 | for_each_ipp_planar(i) | |
308 | rot_write(addr[i], ROT_SRC_BUF_ADDR(i)); | |
309 | break; | |
310 | case IPP_BUF_DEQUEUE: | |
311 | for_each_ipp_planar(i) | |
312 | rot_write(0x0, ROT_SRC_BUF_ADDR(i)); | |
313 | break; | |
314 | default: | |
315 | /* Nothing to do */ | |
316 | break; | |
317 | } | |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
322 | static int rotator_dst_set_transf(struct device *dev, | |
323 | enum drm_exynos_degree degree, | |
324 | enum drm_exynos_flip flip, bool *swap) | |
325 | { | |
326 | struct rot_context *rot = dev_get_drvdata(dev); | |
327 | u32 val; | |
328 | ||
329 | /* Set transform configuration */ | |
330 | val = rot_read(ROT_CONTROL); | |
331 | val &= ~ROT_CONTROL_FLIP_MASK; | |
332 | ||
333 | switch (flip) { | |
334 | case EXYNOS_DRM_FLIP_VERTICAL: | |
335 | val |= ROT_CONTROL_FLIP_VERTICAL; | |
336 | break; | |
337 | case EXYNOS_DRM_FLIP_HORIZONTAL: | |
338 | val |= ROT_CONTROL_FLIP_HORIZONTAL; | |
339 | break; | |
340 | default: | |
341 | /* Flip None */ | |
342 | break; | |
343 | } | |
344 | ||
345 | val &= ~ROT_CONTROL_ROT_MASK; | |
346 | ||
347 | switch (degree) { | |
348 | case EXYNOS_DRM_DEGREE_90: | |
349 | val |= ROT_CONTROL_ROT_90; | |
350 | break; | |
351 | case EXYNOS_DRM_DEGREE_180: | |
352 | val |= ROT_CONTROL_ROT_180; | |
353 | break; | |
354 | case EXYNOS_DRM_DEGREE_270: | |
355 | val |= ROT_CONTROL_ROT_270; | |
356 | break; | |
357 | default: | |
358 | /* Rotation 0 Degree */ | |
359 | break; | |
360 | } | |
361 | ||
362 | rot_write(val, ROT_CONTROL); | |
363 | ||
364 | /* Check degree for setting buffer size swap */ | |
365 | if ((degree == EXYNOS_DRM_DEGREE_90) || | |
366 | (degree == EXYNOS_DRM_DEGREE_270)) | |
367 | *swap = true; | |
368 | else | |
369 | *swap = false; | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | static int rotator_dst_set_size(struct device *dev, int swap, | |
375 | struct drm_exynos_pos *pos, | |
376 | struct drm_exynos_sz *sz) | |
377 | { | |
378 | struct rot_context *rot = dev_get_drvdata(dev); | |
379 | u32 val, fmt, hsize, vsize; | |
380 | ||
381 | /* Get format */ | |
382 | fmt = rotator_reg_get_fmt(rot); | |
383 | if (!rotator_check_reg_fmt(fmt)) { | |
384 | DRM_ERROR("%s:invalid format.\n", __func__); | |
385 | return -EINVAL; | |
386 | } | |
387 | ||
388 | /* Align buffer size */ | |
389 | hsize = sz->hsize; | |
390 | vsize = sz->vsize; | |
391 | rotator_align_size(rot, fmt, &hsize, &vsize); | |
392 | ||
393 | /* Set buffer size configuration */ | |
394 | val = ROT_SET_BUF_SIZE_H(vsize) | ROT_SET_BUF_SIZE_W(hsize); | |
395 | rot_write(val, ROT_DST_BUF_SIZE); | |
396 | ||
397 | /* Set crop image position configuration */ | |
398 | val = ROT_CROP_POS_Y(pos->y) | ROT_CROP_POS_X(pos->x); | |
399 | rot_write(val, ROT_DST_CROP_POS); | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
404 | static int rotator_dst_set_addr(struct device *dev, | |
405 | struct drm_exynos_ipp_buf_info *buf_info, | |
406 | u32 buf_id, enum drm_exynos_ipp_buf_type buf_type) | |
407 | { | |
408 | struct rot_context *rot = dev_get_drvdata(dev); | |
409 | dma_addr_t addr[EXYNOS_DRM_PLANAR_MAX]; | |
410 | u32 val, fmt, hsize, vsize; | |
411 | int i; | |
412 | ||
413 | /* Set current buf_id */ | |
414 | rot->cur_buf_id[EXYNOS_DRM_OPS_DST] = buf_id; | |
415 | ||
416 | switch (buf_type) { | |
417 | case IPP_BUF_ENQUEUE: | |
418 | /* Set address configuration */ | |
419 | for_each_ipp_planar(i) | |
420 | addr[i] = buf_info->base[i]; | |
421 | ||
422 | /* Get format */ | |
423 | fmt = rotator_reg_get_fmt(rot); | |
424 | if (!rotator_check_reg_fmt(fmt)) { | |
425 | DRM_ERROR("%s:invalid format.\n", __func__); | |
426 | return -EINVAL; | |
427 | } | |
428 | ||
429 | /* Re-set cb planar for NV12 format */ | |
430 | if ((fmt == ROT_CONTROL_FMT_YCBCR420_2P) && | |
431 | !addr[EXYNOS_DRM_PLANAR_CB]) { | |
432 | /* Get buf size */ | |
433 | val = rot_read(ROT_DST_BUF_SIZE); | |
434 | ||
435 | hsize = ROT_GET_BUF_SIZE_W(val); | |
436 | vsize = ROT_GET_BUF_SIZE_H(val); | |
437 | ||
438 | /* Set cb planar */ | |
439 | addr[EXYNOS_DRM_PLANAR_CB] = | |
440 | addr[EXYNOS_DRM_PLANAR_Y] + hsize * vsize; | |
441 | } | |
442 | ||
443 | for_each_ipp_planar(i) | |
444 | rot_write(addr[i], ROT_DST_BUF_ADDR(i)); | |
445 | break; | |
446 | case IPP_BUF_DEQUEUE: | |
447 | for_each_ipp_planar(i) | |
448 | rot_write(0x0, ROT_DST_BUF_ADDR(i)); | |
449 | break; | |
450 | default: | |
451 | /* Nothing to do */ | |
452 | break; | |
453 | } | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | static struct exynos_drm_ipp_ops rot_src_ops = { | |
459 | .set_fmt = rotator_src_set_fmt, | |
460 | .set_size = rotator_src_set_size, | |
461 | .set_addr = rotator_src_set_addr, | |
462 | }; | |
463 | ||
464 | static struct exynos_drm_ipp_ops rot_dst_ops = { | |
465 | .set_transf = rotator_dst_set_transf, | |
466 | .set_size = rotator_dst_set_size, | |
467 | .set_addr = rotator_dst_set_addr, | |
468 | }; | |
469 | ||
470 | static int rotator_init_prop_list(struct exynos_drm_ippdrv *ippdrv) | |
471 | { | |
472 | struct drm_exynos_ipp_prop_list *prop_list; | |
473 | ||
474 | DRM_DEBUG_KMS("%s\n", __func__); | |
475 | ||
476 | prop_list = devm_kzalloc(ippdrv->dev, sizeof(*prop_list), GFP_KERNEL); | |
477 | if (!prop_list) { | |
478 | DRM_ERROR("failed to alloc property list.\n"); | |
479 | return -ENOMEM; | |
480 | } | |
481 | ||
482 | prop_list->version = 1; | |
483 | prop_list->flip = (1 << EXYNOS_DRM_FLIP_VERTICAL) | | |
484 | (1 << EXYNOS_DRM_FLIP_HORIZONTAL); | |
485 | prop_list->degree = (1 << EXYNOS_DRM_DEGREE_0) | | |
486 | (1 << EXYNOS_DRM_DEGREE_90) | | |
487 | (1 << EXYNOS_DRM_DEGREE_180) | | |
488 | (1 << EXYNOS_DRM_DEGREE_270); | |
489 | prop_list->csc = 0; | |
490 | prop_list->crop = 0; | |
491 | prop_list->scale = 0; | |
492 | ||
493 | ippdrv->prop_list = prop_list; | |
494 | ||
495 | return 0; | |
496 | } | |
497 | ||
498 | static inline bool rotator_check_drm_fmt(u32 fmt) | |
499 | { | |
500 | switch (fmt) { | |
501 | case DRM_FORMAT_XRGB8888: | |
502 | case DRM_FORMAT_NV12: | |
503 | return true; | |
504 | default: | |
505 | DRM_DEBUG_KMS("%s:not support format\n", __func__); | |
506 | return false; | |
507 | } | |
508 | } | |
509 | ||
510 | static inline bool rotator_check_drm_flip(enum drm_exynos_flip flip) | |
511 | { | |
512 | switch (flip) { | |
513 | case EXYNOS_DRM_FLIP_NONE: | |
514 | case EXYNOS_DRM_FLIP_VERTICAL: | |
515 | case EXYNOS_DRM_FLIP_HORIZONTAL: | |
4f21877c | 516 | case EXYNOS_DRM_FLIP_BOTH: |
bea8a429 EK |
517 | return true; |
518 | default: | |
519 | DRM_DEBUG_KMS("%s:invalid flip\n", __func__); | |
520 | return false; | |
521 | } | |
522 | } | |
523 | ||
524 | static int rotator_ippdrv_check_property(struct device *dev, | |
525 | struct drm_exynos_ipp_property *property) | |
526 | { | |
527 | struct drm_exynos_ipp_config *src_config = | |
528 | &property->config[EXYNOS_DRM_OPS_SRC]; | |
529 | struct drm_exynos_ipp_config *dst_config = | |
530 | &property->config[EXYNOS_DRM_OPS_DST]; | |
531 | struct drm_exynos_pos *src_pos = &src_config->pos; | |
532 | struct drm_exynos_pos *dst_pos = &dst_config->pos; | |
533 | struct drm_exynos_sz *src_sz = &src_config->sz; | |
534 | struct drm_exynos_sz *dst_sz = &dst_config->sz; | |
535 | bool swap = false; | |
536 | ||
537 | /* Check format configuration */ | |
538 | if (src_config->fmt != dst_config->fmt) { | |
539 | DRM_DEBUG_KMS("%s:not support csc feature\n", __func__); | |
540 | return -EINVAL; | |
541 | } | |
542 | ||
543 | if (!rotator_check_drm_fmt(dst_config->fmt)) { | |
544 | DRM_DEBUG_KMS("%s:invalid format\n", __func__); | |
545 | return -EINVAL; | |
546 | } | |
547 | ||
548 | /* Check transform configuration */ | |
549 | if (src_config->degree != EXYNOS_DRM_DEGREE_0) { | |
550 | DRM_DEBUG_KMS("%s:not support source-side rotation\n", | |
551 | __func__); | |
552 | return -EINVAL; | |
553 | } | |
554 | ||
555 | switch (dst_config->degree) { | |
556 | case EXYNOS_DRM_DEGREE_90: | |
557 | case EXYNOS_DRM_DEGREE_270: | |
558 | swap = true; | |
559 | case EXYNOS_DRM_DEGREE_0: | |
560 | case EXYNOS_DRM_DEGREE_180: | |
561 | /* No problem */ | |
562 | break; | |
563 | default: | |
564 | DRM_DEBUG_KMS("%s:invalid degree\n", __func__); | |
565 | return -EINVAL; | |
566 | } | |
567 | ||
568 | if (src_config->flip != EXYNOS_DRM_FLIP_NONE) { | |
569 | DRM_DEBUG_KMS("%s:not support source-side flip\n", __func__); | |
570 | return -EINVAL; | |
571 | } | |
572 | ||
573 | if (!rotator_check_drm_flip(dst_config->flip)) { | |
574 | DRM_DEBUG_KMS("%s:invalid flip\n", __func__); | |
575 | return -EINVAL; | |
576 | } | |
577 | ||
578 | /* Check size configuration */ | |
579 | if ((src_pos->x + src_pos->w > src_sz->hsize) || | |
580 | (src_pos->y + src_pos->h > src_sz->vsize)) { | |
581 | DRM_DEBUG_KMS("%s:out of source buffer bound\n", __func__); | |
582 | return -EINVAL; | |
583 | } | |
584 | ||
585 | if (swap) { | |
586 | if ((dst_pos->x + dst_pos->h > dst_sz->vsize) || | |
587 | (dst_pos->y + dst_pos->w > dst_sz->hsize)) { | |
588 | DRM_DEBUG_KMS("%s:out of destination buffer bound\n", | |
589 | __func__); | |
590 | return -EINVAL; | |
591 | } | |
592 | ||
593 | if ((src_pos->w != dst_pos->h) || (src_pos->h != dst_pos->w)) { | |
594 | DRM_DEBUG_KMS("%s:not support scale feature\n", | |
595 | __func__); | |
596 | return -EINVAL; | |
597 | } | |
598 | } else { | |
599 | if ((dst_pos->x + dst_pos->w > dst_sz->hsize) || | |
600 | (dst_pos->y + dst_pos->h > dst_sz->vsize)) { | |
601 | DRM_DEBUG_KMS("%s:out of destination buffer bound\n", | |
602 | __func__); | |
603 | return -EINVAL; | |
604 | } | |
605 | ||
606 | if ((src_pos->w != dst_pos->w) || (src_pos->h != dst_pos->h)) { | |
607 | DRM_DEBUG_KMS("%s:not support scale feature\n", | |
608 | __func__); | |
609 | return -EINVAL; | |
610 | } | |
611 | } | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
616 | static int rotator_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd cmd) | |
617 | { | |
618 | struct rot_context *rot = dev_get_drvdata(dev); | |
619 | u32 val; | |
620 | ||
621 | if (rot->suspended) { | |
622 | DRM_ERROR("suspended state\n"); | |
623 | return -EPERM; | |
624 | } | |
625 | ||
626 | if (cmd != IPP_CMD_M2M) { | |
627 | DRM_ERROR("not support cmd: %d\n", cmd); | |
628 | return -EINVAL; | |
629 | } | |
630 | ||
631 | /* Set interrupt enable */ | |
632 | rotator_reg_set_irq(rot, true); | |
633 | ||
634 | val = rot_read(ROT_CONTROL); | |
635 | val |= ROT_CONTROL_START; | |
636 | ||
637 | rot_write(val, ROT_CONTROL); | |
638 | ||
639 | return 0; | |
640 | } | |
641 | ||
56550d94 | 642 | static int rotator_probe(struct platform_device *pdev) |
bea8a429 EK |
643 | { |
644 | struct device *dev = &pdev->dev; | |
645 | struct rot_context *rot; | |
646 | struct exynos_drm_ippdrv *ippdrv; | |
647 | int ret; | |
648 | ||
649 | rot = devm_kzalloc(dev, sizeof(*rot), GFP_KERNEL); | |
650 | if (!rot) { | |
651 | dev_err(dev, "failed to allocate rot\n"); | |
652 | return -ENOMEM; | |
653 | } | |
654 | ||
655 | rot->limit_tbl = (struct rot_limit_table *) | |
656 | platform_get_device_id(pdev)->driver_data; | |
657 | ||
658 | rot->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
d4ed6025 TR |
659 | rot->regs = devm_ioremap_resource(dev, rot->regs_res); |
660 | if (IS_ERR(rot->regs)) | |
661 | return PTR_ERR(rot->regs); | |
bea8a429 EK |
662 | |
663 | rot->irq = platform_get_irq(pdev, 0); | |
664 | if (rot->irq < 0) { | |
665 | dev_err(dev, "failed to get irq\n"); | |
6eac74d1 | 666 | return rot->irq; |
bea8a429 EK |
667 | } |
668 | ||
dcb9a7c7 SWK |
669 | ret = devm_request_threaded_irq(dev, rot->irq, NULL, |
670 | rotator_irq_handler, IRQF_ONESHOT, "drm_rotator", rot); | |
bea8a429 EK |
671 | if (ret < 0) { |
672 | dev_err(dev, "failed to request irq\n"); | |
6eac74d1 | 673 | return ret; |
bea8a429 EK |
674 | } |
675 | ||
af8cd946 | 676 | rot->clock = devm_clk_get(dev, "rotator"); |
d8e9ca45 | 677 | if (IS_ERR(rot->clock)) { |
bea8a429 | 678 | dev_err(dev, "failed to get clock\n"); |
dcb9a7c7 | 679 | return PTR_ERR(rot->clock); |
bea8a429 EK |
680 | } |
681 | ||
682 | pm_runtime_enable(dev); | |
683 | ||
684 | ippdrv = &rot->ippdrv; | |
685 | ippdrv->dev = dev; | |
686 | ippdrv->ops[EXYNOS_DRM_OPS_SRC] = &rot_src_ops; | |
687 | ippdrv->ops[EXYNOS_DRM_OPS_DST] = &rot_dst_ops; | |
688 | ippdrv->check_property = rotator_ippdrv_check_property; | |
689 | ippdrv->start = rotator_ippdrv_start; | |
690 | ret = rotator_init_prop_list(ippdrv); | |
691 | if (ret < 0) { | |
692 | dev_err(dev, "failed to init property list.\n"); | |
693 | goto err_ippdrv_register; | |
694 | } | |
695 | ||
696 | DRM_DEBUG_KMS("%s:ippdrv[0x%x]\n", __func__, (int)ippdrv); | |
697 | ||
698 | platform_set_drvdata(pdev, rot); | |
699 | ||
700 | ret = exynos_drm_ippdrv_register(ippdrv); | |
701 | if (ret < 0) { | |
702 | dev_err(dev, "failed to register drm rotator device\n"); | |
703 | goto err_ippdrv_register; | |
704 | } | |
705 | ||
706 | dev_info(dev, "The exynos rotator is probed successfully\n"); | |
707 | ||
708 | return 0; | |
709 | ||
710 | err_ippdrv_register: | |
bea8a429 | 711 | pm_runtime_disable(dev); |
bea8a429 EK |
712 | return ret; |
713 | } | |
714 | ||
56550d94 | 715 | static int rotator_remove(struct platform_device *pdev) |
bea8a429 EK |
716 | { |
717 | struct device *dev = &pdev->dev; | |
718 | struct rot_context *rot = dev_get_drvdata(dev); | |
719 | struct exynos_drm_ippdrv *ippdrv = &rot->ippdrv; | |
720 | ||
bea8a429 EK |
721 | exynos_drm_ippdrv_unregister(ippdrv); |
722 | ||
723 | pm_runtime_disable(dev); | |
bea8a429 | 724 | |
bea8a429 EK |
725 | return 0; |
726 | } | |
727 | ||
0315a902 | 728 | static struct rot_limit_table rot_limit_tbl = { |
bea8a429 EK |
729 | .ycbcr420_2p = { |
730 | .min_w = 32, | |
731 | .min_h = 32, | |
732 | .max_w = SZ_32K, | |
733 | .max_h = SZ_32K, | |
734 | .align = 3, | |
735 | }, | |
736 | .rgb888 = { | |
737 | .min_w = 8, | |
738 | .min_h = 8, | |
739 | .max_w = SZ_8K, | |
740 | .max_h = SZ_8K, | |
741 | .align = 2, | |
742 | }, | |
743 | }; | |
744 | ||
0315a902 | 745 | static struct platform_device_id rotator_driver_ids[] = { |
bea8a429 EK |
746 | { |
747 | .name = "exynos-rot", | |
748 | .driver_data = (unsigned long)&rot_limit_tbl, | |
749 | }, | |
750 | {}, | |
751 | }; | |
752 | ||
753 | static int rotator_clk_crtl(struct rot_context *rot, bool enable) | |
754 | { | |
755 | DRM_DEBUG_KMS("%s\n", __func__); | |
756 | ||
757 | if (enable) { | |
758 | clk_enable(rot->clock); | |
759 | rot->suspended = false; | |
760 | } else { | |
761 | clk_disable(rot->clock); | |
762 | rot->suspended = true; | |
763 | } | |
764 | ||
765 | return 0; | |
766 | } | |
767 | ||
768 | ||
769 | #ifdef CONFIG_PM_SLEEP | |
770 | static int rotator_suspend(struct device *dev) | |
771 | { | |
772 | struct rot_context *rot = dev_get_drvdata(dev); | |
773 | ||
774 | DRM_DEBUG_KMS("%s\n", __func__); | |
775 | ||
776 | if (pm_runtime_suspended(dev)) | |
777 | return 0; | |
778 | ||
779 | return rotator_clk_crtl(rot, false); | |
780 | } | |
781 | ||
782 | static int rotator_resume(struct device *dev) | |
783 | { | |
784 | struct rot_context *rot = dev_get_drvdata(dev); | |
785 | ||
786 | DRM_DEBUG_KMS("%s\n", __func__); | |
787 | ||
788 | if (!pm_runtime_suspended(dev)) | |
789 | return rotator_clk_crtl(rot, true); | |
790 | ||
791 | return 0; | |
792 | } | |
793 | #endif | |
794 | ||
795 | #ifdef CONFIG_PM_RUNTIME | |
796 | static int rotator_runtime_suspend(struct device *dev) | |
797 | { | |
798 | struct rot_context *rot = dev_get_drvdata(dev); | |
799 | ||
800 | DRM_DEBUG_KMS("%s\n", __func__); | |
801 | ||
802 | return rotator_clk_crtl(rot, false); | |
803 | } | |
804 | ||
805 | static int rotator_runtime_resume(struct device *dev) | |
806 | { | |
807 | struct rot_context *rot = dev_get_drvdata(dev); | |
808 | ||
809 | DRM_DEBUG_KMS("%s\n", __func__); | |
810 | ||
811 | return rotator_clk_crtl(rot, true); | |
812 | } | |
813 | #endif | |
814 | ||
815 | static const struct dev_pm_ops rotator_pm_ops = { | |
816 | SET_SYSTEM_SLEEP_PM_OPS(rotator_suspend, rotator_resume) | |
817 | SET_RUNTIME_PM_OPS(rotator_runtime_suspend, rotator_runtime_resume, | |
818 | NULL) | |
819 | }; | |
820 | ||
821 | struct platform_driver rotator_driver = { | |
822 | .probe = rotator_probe, | |
56550d94 | 823 | .remove = rotator_remove, |
bea8a429 EK |
824 | .id_table = rotator_driver_ids, |
825 | .driver = { | |
826 | .name = "exynos-rot", | |
827 | .owner = THIS_MODULE, | |
828 | .pm = &rotator_pm_ops, | |
829 | }, | |
830 | }; |