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drm/omap: Fix error handling path in 'omap_dmm_probe()'
[linux/fpc-iii.git] / drivers / gpu / drm / exynos / exynos_drm_fimc.c
blobc747824f3c98551bf2883a7659249a840359de62
1 /*
2 * Copyright (C) 2012 Samsung Electronics Co.Ltd
3 * Authors:
4 * Eunchul Kim <chulspro.kim@samsung.com>
5 * Jinyoung Jeon <jy0.jeon@samsung.com>
6 * Sangmin Lee <lsmin.lee@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 */
14 #include <linux/kernel.h>
15 #include <linux/platform_device.h>
16 #include <linux/mfd/syscon.h>
17 #include <linux/regmap.h>
18 #include <linux/clk.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/of.h>
21 #include <linux/spinlock.h>
22
23 #include <drm/drmP.h>
24 #include <drm/exynos_drm.h>
25 #include "regs-fimc.h"
26 #include "exynos_drm_drv.h"
27 #include "exynos_drm_ipp.h"
28 #include "exynos_drm_fimc.h"
29
30 /*
31 * FIMC stands for Fully Interactive Mobile Camera and
32 * supports image scaler/rotator and input/output DMA operations.
33 * input DMA reads image data from the memory.
34 * output DMA writes image data to memory.
35 * FIMC supports image rotation and image effect functions.
36 *
37 * M2M operation : supports crop/scale/rotation/csc so on.
38 * Memory ----> FIMC H/W ----> Memory.
39 * Writeback operation : supports cloned screen with FIMD.
40 * FIMD ----> FIMC H/W ----> Memory.
41 * Output operation : supports direct display using local path.
42 * Memory ----> FIMC H/W ----> FIMD.
43 */
44
45 /*
46 * TODO
47 * 1. check suspend/resume api if needed.
48 * 2. need to check use case platform_device_id.
49 * 3. check src/dst size with, height.
50 * 4. added check_prepare api for right register.
51 * 5. need to add supported list in prop_list.
52 * 6. check prescaler/scaler optimization.
53 */
54
55 #define FIMC_MAX_DEVS 4
56 #define FIMC_MAX_SRC 2
57 #define FIMC_MAX_DST 32
58 #define FIMC_SHFACTOR 10
59 #define FIMC_BUF_STOP 1
60 #define FIMC_BUF_START 2
61 #define FIMC_WIDTH_ITU_709 1280
62 #define FIMC_REFRESH_MAX 60
63 #define FIMC_REFRESH_MIN 12
64 #define FIMC_CROP_MAX 8192
65 #define FIMC_CROP_MIN 32
66 #define FIMC_SCALE_MAX 4224
67 #define FIMC_SCALE_MIN 32
68
69 #define get_fimc_context(dev) platform_get_drvdata(to_platform_device(dev))
70 #define get_ctx_from_ippdrv(ippdrv) container_of(ippdrv,\
71 struct fimc_context, ippdrv);
72 enum fimc_wb {
73 FIMC_WB_NONE,
74 FIMC_WB_A,
75 FIMC_WB_B,
76 };
77
78 enum {
79 FIMC_CLK_LCLK,
80 FIMC_CLK_GATE,
81 FIMC_CLK_WB_A,
82 FIMC_CLK_WB_B,
83 FIMC_CLK_MUX,
84 FIMC_CLK_PARENT,
85 FIMC_CLKS_MAX
86 };
87
88 static const char * const fimc_clock_names[] = {
89 [FIMC_CLK_LCLK] = "sclk_fimc",
90 [FIMC_CLK_GATE] = "fimc",
91 [FIMC_CLK_WB_A] = "pxl_async0",
92 [FIMC_CLK_WB_B] = "pxl_async1",
93 [FIMC_CLK_MUX] = "mux",
94 [FIMC_CLK_PARENT] = "parent",
95 };
96
97 #define FIMC_DEFAULT_LCLK_FREQUENCY 133000000UL
98
99 /*
100 * A structure of scaler.
101 *
102 * @range: narrow, wide.
103 * @bypass: unused scaler path.
104 * @up_h: horizontal scale up.
105 * @up_v: vertical scale up.
106 * @hratio: horizontal ratio.
107 * @vratio: vertical ratio.
108 */
109 struct fimc_scaler {
110 bool range;
111 bool bypass;
112 bool up_h;
113 bool up_v;
114 u32 hratio;
115 u32 vratio;
116 };
117
118 /*
119 * A structure of scaler capability.
120 *
121 * find user manual table 43-1.
122 * @in_hori: scaler input horizontal size.
123 * @bypass: scaler bypass mode.
124 * @dst_h_wo_rot: target horizontal size without output rotation.
125 * @dst_h_rot: target horizontal size with output rotation.
126 * @rl_w_wo_rot: real width without input rotation.
127 * @rl_h_rot: real height without output rotation.
128 */
129 struct fimc_capability {
130 /* scaler */
131 u32 in_hori;
132 u32 bypass;
133 /* output rotator */
134 u32 dst_h_wo_rot;
135 u32 dst_h_rot;
136 /* input rotator */
137 u32 rl_w_wo_rot;
138 u32 rl_h_rot;
139 };
140
141 /*
142 * A structure of fimc context.
143 *
144 * @ippdrv: prepare initialization using ippdrv.
145 * @regs_res: register resources.
146 * @regs: memory mapped io registers.
147 * @lock: locking of operations.
148 * @clocks: fimc clocks.
149 * @clk_frequency: LCLK clock frequency.
150 * @sysreg: handle to SYSREG block regmap.
151 * @sc: scaler infomations.
152 * @pol: porarity of writeback.
153 * @id: fimc id.
154 * @irq: irq number.
155 * @suspended: qos operations.
156 */
157 struct fimc_context {
158 struct exynos_drm_ippdrv ippdrv;
159 struct resource *regs_res;
160 void __iomem *regs;
161 spinlock_t lock;
162 struct clk *clocks[FIMC_CLKS_MAX];
163 u32 clk_frequency;
164 struct regmap *sysreg;
165 struct fimc_scaler sc;
166 struct exynos_drm_ipp_pol pol;
167 int id;
168 int irq;
169 bool suspended;
170 };
171
172 static u32 fimc_read(struct fimc_context *ctx, u32 reg)
173 {
174 return readl(ctx->regs + reg);
175 }
176
177 static void fimc_write(struct fimc_context *ctx, u32 val, u32 reg)
178 {
179 writel(val, ctx->regs + reg);
180 }
181
182 static void fimc_set_bits(struct fimc_context *ctx, u32 reg, u32 bits)
183 {
184 void __iomem *r = ctx->regs + reg;
185
186 writel(readl(r) | bits, r);
187 }
188
189 static void fimc_clear_bits(struct fimc_context *ctx, u32 reg, u32 bits)
190 {
191 void __iomem *r = ctx->regs + reg;
192
193 writel(readl(r) & ~bits, r);
194 }
195
196 static void fimc_sw_reset(struct fimc_context *ctx)
197 {
198 u32 cfg;
199
200 /* stop dma operation */
201 cfg = fimc_read(ctx, EXYNOS_CISTATUS);
202 if (EXYNOS_CISTATUS_GET_ENVID_STATUS(cfg))
203 fimc_clear_bits(ctx, EXYNOS_MSCTRL, EXYNOS_MSCTRL_ENVID);
204
205 fimc_set_bits(ctx, EXYNOS_CISRCFMT, EXYNOS_CISRCFMT_ITU601_8BIT);
206
207 /* disable image capture */
208 fimc_clear_bits(ctx, EXYNOS_CIIMGCPT,
209 EXYNOS_CIIMGCPT_IMGCPTEN_SC | EXYNOS_CIIMGCPT_IMGCPTEN);
210
211 /* s/w reset */
212 fimc_set_bits(ctx, EXYNOS_CIGCTRL, EXYNOS_CIGCTRL_SWRST);
213
214 /* s/w reset complete */
215 fimc_clear_bits(ctx, EXYNOS_CIGCTRL, EXYNOS_CIGCTRL_SWRST);
216
217 /* reset sequence */
218 fimc_write(ctx, 0x0, EXYNOS_CIFCNTSEQ);
219 }
220
221 static int fimc_set_camblk_fimd0_wb(struct fimc_context *ctx)
222 {
223 return regmap_update_bits(ctx->sysreg, SYSREG_CAMERA_BLK,
224 SYSREG_FIMD0WB_DEST_MASK,
225 ctx->id << SYSREG_FIMD0WB_DEST_SHIFT);
226 }
227
228 static void fimc_set_type_ctrl(struct fimc_context *ctx, enum fimc_wb wb)
229 {
230 u32 cfg;
231
232 DRM_DEBUG_KMS("wb[%d]\n", wb);
233
234 cfg = fimc_read(ctx, EXYNOS_CIGCTRL);
235 cfg &= ~(EXYNOS_CIGCTRL_TESTPATTERN_MASK |
236 EXYNOS_CIGCTRL_SELCAM_ITU_MASK |
237 EXYNOS_CIGCTRL_SELCAM_MIPI_MASK |
238 EXYNOS_CIGCTRL_SELCAM_FIMC_MASK |
239 EXYNOS_CIGCTRL_SELWB_CAMIF_MASK |
240 EXYNOS_CIGCTRL_SELWRITEBACK_MASK);
241
242 switch (wb) {
243 case FIMC_WB_A:
244 cfg |= (EXYNOS_CIGCTRL_SELWRITEBACK_A |
245 EXYNOS_CIGCTRL_SELWB_CAMIF_WRITEBACK);
246 break;
247 case FIMC_WB_B:
248 cfg |= (EXYNOS_CIGCTRL_SELWRITEBACK_B |
249 EXYNOS_CIGCTRL_SELWB_CAMIF_WRITEBACK);
250 break;
251 case FIMC_WB_NONE:
252 default:
253 cfg |= (EXYNOS_CIGCTRL_SELCAM_ITU_A |
254 EXYNOS_CIGCTRL_SELWRITEBACK_A |
255 EXYNOS_CIGCTRL_SELCAM_MIPI_A |
256 EXYNOS_CIGCTRL_SELCAM_FIMC_ITU);
257 break;
258 }
259
260 fimc_write(ctx, cfg, EXYNOS_CIGCTRL);
261 }
262
263 static void fimc_set_polarity(struct fimc_context *ctx,
264 struct exynos_drm_ipp_pol *pol)
265 {
266 u32 cfg;
267
268 DRM_DEBUG_KMS("inv_pclk[%d]inv_vsync[%d]\n",
269 pol->inv_pclk, pol->inv_vsync);
270 DRM_DEBUG_KMS("inv_href[%d]inv_hsync[%d]\n",
271 pol->inv_href, pol->inv_hsync);
272
273 cfg = fimc_read(ctx, EXYNOS_CIGCTRL);
274 cfg &= ~(EXYNOS_CIGCTRL_INVPOLPCLK | EXYNOS_CIGCTRL_INVPOLVSYNC |
275 EXYNOS_CIGCTRL_INVPOLHREF | EXYNOS_CIGCTRL_INVPOLHSYNC);
276
277 if (pol->inv_pclk)
278 cfg |= EXYNOS_CIGCTRL_INVPOLPCLK;
279 if (pol->inv_vsync)
280 cfg |= EXYNOS_CIGCTRL_INVPOLVSYNC;
281 if (pol->inv_href)
282 cfg |= EXYNOS_CIGCTRL_INVPOLHREF;
283 if (pol->inv_hsync)
284 cfg |= EXYNOS_CIGCTRL_INVPOLHSYNC;
285
286 fimc_write(ctx, cfg, EXYNOS_CIGCTRL);
287 }
288
289 static void fimc_handle_jpeg(struct fimc_context *ctx, bool enable)
290 {
291 u32 cfg;
292
293 DRM_DEBUG_KMS("enable[%d]\n", enable);
294
295 cfg = fimc_read(ctx, EXYNOS_CIGCTRL);
296 if (enable)
297 cfg |= EXYNOS_CIGCTRL_CAM_JPEG;
298 else
299 cfg &= ~EXYNOS_CIGCTRL_CAM_JPEG;
300
301 fimc_write(ctx, cfg, EXYNOS_CIGCTRL);
302 }
303
304 static void fimc_mask_irq(struct fimc_context *ctx, bool enable)
305 {
306 u32 cfg;
307
308 DRM_DEBUG_KMS("enable[%d]\n", enable);
309
310 cfg = fimc_read(ctx, EXYNOS_CIGCTRL);
311 if (enable) {
312 cfg &= ~EXYNOS_CIGCTRL_IRQ_OVFEN;
313 cfg |= EXYNOS_CIGCTRL_IRQ_ENABLE | EXYNOS_CIGCTRL_IRQ_LEVEL;
314 } else
315 cfg &= ~EXYNOS_CIGCTRL_IRQ_ENABLE;
316 fimc_write(ctx, cfg, EXYNOS_CIGCTRL);
317 }
318
319 static void fimc_clear_irq(struct fimc_context *ctx)
320 {
321 fimc_set_bits(ctx, EXYNOS_CIGCTRL, EXYNOS_CIGCTRL_IRQ_CLR);
322 }
323
324 static bool fimc_check_ovf(struct fimc_context *ctx)
325 {
326 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
327 u32 status, flag;
328
329 status = fimc_read(ctx, EXYNOS_CISTATUS);
330 flag = EXYNOS_CISTATUS_OVFIY | EXYNOS_CISTATUS_OVFICB |
331 EXYNOS_CISTATUS_OVFICR;
332
333 DRM_DEBUG_KMS("flag[0x%x]\n", flag);
334
335 if (status & flag) {
336 fimc_set_bits(ctx, EXYNOS_CIWDOFST,
337 EXYNOS_CIWDOFST_CLROVFIY | EXYNOS_CIWDOFST_CLROVFICB |
338 EXYNOS_CIWDOFST_CLROVFICR);
339
340 dev_err(ippdrv->dev, "occurred overflow at %d, status 0x%x.\n",
341 ctx->id, status);
342 return true;
343 }
344
345 return false;
346 }
347
348 static bool fimc_check_frame_end(struct fimc_context *ctx)
349 {
350 u32 cfg;
351
352 cfg = fimc_read(ctx, EXYNOS_CISTATUS);
353
354 DRM_DEBUG_KMS("cfg[0x%x]\n", cfg);
355
356 if (!(cfg & EXYNOS_CISTATUS_FRAMEEND))
357 return false;
358
359 cfg &= ~(EXYNOS_CISTATUS_FRAMEEND);
360 fimc_write(ctx, cfg, EXYNOS_CISTATUS);
361
362 return true;
363 }
364
365 static int fimc_get_buf_id(struct fimc_context *ctx)
366 {
367 u32 cfg;
368 int frame_cnt, buf_id;
369
370 cfg = fimc_read(ctx, EXYNOS_CISTATUS2);
371 frame_cnt = EXYNOS_CISTATUS2_GET_FRAMECOUNT_BEFORE(cfg);
372
373 if (frame_cnt == 0)
374 frame_cnt = EXYNOS_CISTATUS2_GET_FRAMECOUNT_PRESENT(cfg);
375
376 DRM_DEBUG_KMS("present[%d]before[%d]\n",
377 EXYNOS_CISTATUS2_GET_FRAMECOUNT_PRESENT(cfg),
378 EXYNOS_CISTATUS2_GET_FRAMECOUNT_BEFORE(cfg));
379
380 if (frame_cnt == 0) {
381 DRM_ERROR("failed to get frame count.\n");
382 return -EIO;
383 }
384
385 buf_id = frame_cnt - 1;
386 DRM_DEBUG_KMS("buf_id[%d]\n", buf_id);
387
388 return buf_id;
389 }
390
391 static void fimc_handle_lastend(struct fimc_context *ctx, bool enable)
392 {
393 u32 cfg;
394
395 DRM_DEBUG_KMS("enable[%d]\n", enable);
396
397 cfg = fimc_read(ctx, EXYNOS_CIOCTRL);
398 if (enable)
399 cfg |= EXYNOS_CIOCTRL_LASTENDEN;
400 else
401 cfg &= ~EXYNOS_CIOCTRL_LASTENDEN;
402
403 fimc_write(ctx, cfg, EXYNOS_CIOCTRL);
404 }
405
406
407 static int fimc_src_set_fmt_order(struct fimc_context *ctx, u32 fmt)
408 {
409 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
410 u32 cfg;
411
412 DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
413
414 /* RGB */
415 cfg = fimc_read(ctx, EXYNOS_CISCCTRL);
416 cfg &= ~EXYNOS_CISCCTRL_INRGB_FMT_RGB_MASK;
417
418 switch (fmt) {
419 case DRM_FORMAT_RGB565:
420 cfg |= EXYNOS_CISCCTRL_INRGB_FMT_RGB565;
421 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
422 return 0;
423 case DRM_FORMAT_RGB888:
424 case DRM_FORMAT_XRGB8888:
425 cfg |= EXYNOS_CISCCTRL_INRGB_FMT_RGB888;
426 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
427 return 0;
428 default:
429 /* bypass */
430 break;
431 }
432
433 /* YUV */
434 cfg = fimc_read(ctx, EXYNOS_MSCTRL);
435 cfg &= ~(EXYNOS_MSCTRL_ORDER2P_SHIFT_MASK |
436 EXYNOS_MSCTRL_C_INT_IN_2PLANE |
437 EXYNOS_MSCTRL_ORDER422_YCBYCR);
438
439 switch (fmt) {
440 case DRM_FORMAT_YUYV:
441 cfg |= EXYNOS_MSCTRL_ORDER422_YCBYCR;
442 break;
443 case DRM_FORMAT_YVYU:
444 cfg |= EXYNOS_MSCTRL_ORDER422_YCRYCB;
445 break;
446 case DRM_FORMAT_UYVY:
447 cfg |= EXYNOS_MSCTRL_ORDER422_CBYCRY;
448 break;
449 case DRM_FORMAT_VYUY:
450 case DRM_FORMAT_YUV444:
451 cfg |= EXYNOS_MSCTRL_ORDER422_CRYCBY;
452 break;
453 case DRM_FORMAT_NV21:
454 case DRM_FORMAT_NV61:
455 cfg |= (EXYNOS_MSCTRL_ORDER2P_LSB_CRCB |
456 EXYNOS_MSCTRL_C_INT_IN_2PLANE);
457 break;
458 case DRM_FORMAT_YUV422:
459 case DRM_FORMAT_YUV420:
460 case DRM_FORMAT_YVU420:
461 cfg |= EXYNOS_MSCTRL_C_INT_IN_3PLANE;
462 break;
463 case DRM_FORMAT_NV12:
464 case DRM_FORMAT_NV16:
465 cfg |= (EXYNOS_MSCTRL_ORDER2P_LSB_CBCR |
466 EXYNOS_MSCTRL_C_INT_IN_2PLANE);
467 break;
468 default:
469 dev_err(ippdrv->dev, "invalid source yuv order 0x%x.\n", fmt);
470 return -EINVAL;
471 }
472
473 fimc_write(ctx, cfg, EXYNOS_MSCTRL);
474
475 return 0;
476 }
477
478 static int fimc_src_set_fmt(struct device *dev, u32 fmt)
479 {
480 struct fimc_context *ctx = get_fimc_context(dev);
481 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
482 u32 cfg;
483
484 DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
485
486 cfg = fimc_read(ctx, EXYNOS_MSCTRL);
487 cfg &= ~EXYNOS_MSCTRL_INFORMAT_RGB;
488
489 switch (fmt) {
490 case DRM_FORMAT_RGB565:
491 case DRM_FORMAT_RGB888:
492 case DRM_FORMAT_XRGB8888:
493 cfg |= EXYNOS_MSCTRL_INFORMAT_RGB;
494 break;
495 case DRM_FORMAT_YUV444:
496 cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR420;
497 break;
498 case DRM_FORMAT_YUYV:
499 case DRM_FORMAT_YVYU:
500 case DRM_FORMAT_UYVY:
501 case DRM_FORMAT_VYUY:
502 cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR422_1PLANE;
503 break;
504 case DRM_FORMAT_NV16:
505 case DRM_FORMAT_NV61:
506 case DRM_FORMAT_YUV422:
507 cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR422;
508 break;
509 case DRM_FORMAT_YUV420:
510 case DRM_FORMAT_YVU420:
511 case DRM_FORMAT_NV12:
512 case DRM_FORMAT_NV21:
513 cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR420;
514 break;
515 default:
516 dev_err(ippdrv->dev, "invalid source format 0x%x.\n", fmt);
517 return -EINVAL;
518 }
519
520 fimc_write(ctx, cfg, EXYNOS_MSCTRL);
521
522 cfg = fimc_read(ctx, EXYNOS_CIDMAPARAM);
523 cfg &= ~EXYNOS_CIDMAPARAM_R_MODE_MASK;
524
525 cfg |= EXYNOS_CIDMAPARAM_R_MODE_LINEAR;
526
527 fimc_write(ctx, cfg, EXYNOS_CIDMAPARAM);
528
529 return fimc_src_set_fmt_order(ctx, fmt);
530 }
531
532 static int fimc_src_set_transf(struct device *dev,
533 enum drm_exynos_degree degree,
534 enum drm_exynos_flip flip, bool *swap)
535 {
536 struct fimc_context *ctx = get_fimc_context(dev);
537 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
538 u32 cfg1, cfg2;
539
540 DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip);
541
542 cfg1 = fimc_read(ctx, EXYNOS_MSCTRL);
543 cfg1 &= ~(EXYNOS_MSCTRL_FLIP_X_MIRROR |
544 EXYNOS_MSCTRL_FLIP_Y_MIRROR);
545
546 cfg2 = fimc_read(ctx, EXYNOS_CITRGFMT);
547 cfg2 &= ~EXYNOS_CITRGFMT_INROT90_CLOCKWISE;
548
549 switch (degree) {
550 case EXYNOS_DRM_DEGREE_0:
551 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
552 cfg1 |= EXYNOS_MSCTRL_FLIP_X_MIRROR;
553 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
554 cfg1 |= EXYNOS_MSCTRL_FLIP_Y_MIRROR;
555 break;
556 case EXYNOS_DRM_DEGREE_90:
557 cfg2 |= EXYNOS_CITRGFMT_INROT90_CLOCKWISE;
558 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
559 cfg1 |= EXYNOS_MSCTRL_FLIP_X_MIRROR;
560 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
561 cfg1 |= EXYNOS_MSCTRL_FLIP_Y_MIRROR;
562 break;
563 case EXYNOS_DRM_DEGREE_180:
564 cfg1 |= (EXYNOS_MSCTRL_FLIP_X_MIRROR |
565 EXYNOS_MSCTRL_FLIP_Y_MIRROR);
566 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
567 cfg1 &= ~EXYNOS_MSCTRL_FLIP_X_MIRROR;
568 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
569 cfg1 &= ~EXYNOS_MSCTRL_FLIP_Y_MIRROR;
570 break;
571 case EXYNOS_DRM_DEGREE_270:
572 cfg1 |= (EXYNOS_MSCTRL_FLIP_X_MIRROR |
573 EXYNOS_MSCTRL_FLIP_Y_MIRROR);
574 cfg2 |= EXYNOS_CITRGFMT_INROT90_CLOCKWISE;
575 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
576 cfg1 &= ~EXYNOS_MSCTRL_FLIP_X_MIRROR;
577 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
578 cfg1 &= ~EXYNOS_MSCTRL_FLIP_Y_MIRROR;
579 break;
580 default:
581 dev_err(ippdrv->dev, "invalid degree value %d.\n", degree);
582 return -EINVAL;
583 }
584
585 fimc_write(ctx, cfg1, EXYNOS_MSCTRL);
586 fimc_write(ctx, cfg2, EXYNOS_CITRGFMT);
587 *swap = (cfg2 & EXYNOS_CITRGFMT_INROT90_CLOCKWISE) ? 1 : 0;
588
589 return 0;
590 }
591
592 static int fimc_set_window(struct fimc_context *ctx,
593 struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
594 {
595 u32 cfg, h1, h2, v1, v2;
596
597 /* cropped image */
598 h1 = pos->x;
599 h2 = sz->hsize - pos->w - pos->x;
600 v1 = pos->y;
601 v2 = sz->vsize - pos->h - pos->y;
602
603 DRM_DEBUG_KMS("x[%d]y[%d]w[%d]h[%d]hsize[%d]vsize[%d]\n",
604 pos->x, pos->y, pos->w, pos->h, sz->hsize, sz->vsize);
605 DRM_DEBUG_KMS("h1[%d]h2[%d]v1[%d]v2[%d]\n", h1, h2, v1, v2);
606
607 /*
608 * set window offset 1, 2 size
609 * check figure 43-21 in user manual
610 */
611 cfg = fimc_read(ctx, EXYNOS_CIWDOFST);
612 cfg &= ~(EXYNOS_CIWDOFST_WINHOROFST_MASK |
613 EXYNOS_CIWDOFST_WINVEROFST_MASK);
614 cfg |= (EXYNOS_CIWDOFST_WINHOROFST(h1) |
615 EXYNOS_CIWDOFST_WINVEROFST(v1));
616 cfg |= EXYNOS_CIWDOFST_WINOFSEN;
617 fimc_write(ctx, cfg, EXYNOS_CIWDOFST);
618
619 cfg = (EXYNOS_CIWDOFST2_WINHOROFST2(h2) |
620 EXYNOS_CIWDOFST2_WINVEROFST2(v2));
621 fimc_write(ctx, cfg, EXYNOS_CIWDOFST2);
622
623 return 0;
624 }
625
626 static int fimc_src_set_size(struct device *dev, int swap,
627 struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
628 {
629 struct fimc_context *ctx = get_fimc_context(dev);
630 struct drm_exynos_pos img_pos = *pos;
631 struct drm_exynos_sz img_sz = *sz;
632 u32 cfg;
633
634 DRM_DEBUG_KMS("swap[%d]hsize[%d]vsize[%d]\n",
635 swap, sz->hsize, sz->vsize);
636
637 /* original size */
638 cfg = (EXYNOS_ORGISIZE_HORIZONTAL(img_sz.hsize) |
639 EXYNOS_ORGISIZE_VERTICAL(img_sz.vsize));
640
641 fimc_write(ctx, cfg, EXYNOS_ORGISIZE);
642
643 DRM_DEBUG_KMS("x[%d]y[%d]w[%d]h[%d]\n", pos->x, pos->y, pos->w, pos->h);
644
645 if (swap) {
646 img_pos.w = pos->h;
647 img_pos.h = pos->w;
648 img_sz.hsize = sz->vsize;
649 img_sz.vsize = sz->hsize;
650 }
651
652 /* set input DMA image size */
653 cfg = fimc_read(ctx, EXYNOS_CIREAL_ISIZE);
654 cfg &= ~(EXYNOS_CIREAL_ISIZE_HEIGHT_MASK |
655 EXYNOS_CIREAL_ISIZE_WIDTH_MASK);
656 cfg |= (EXYNOS_CIREAL_ISIZE_WIDTH(img_pos.w) |
657 EXYNOS_CIREAL_ISIZE_HEIGHT(img_pos.h));
658 fimc_write(ctx, cfg, EXYNOS_CIREAL_ISIZE);
659
660 /*
661 * set input FIFO image size
662 * for now, we support only ITU601 8 bit mode
663 */
664 cfg = (EXYNOS_CISRCFMT_ITU601_8BIT |
665 EXYNOS_CISRCFMT_SOURCEHSIZE(img_sz.hsize) |
666 EXYNOS_CISRCFMT_SOURCEVSIZE(img_sz.vsize));
667 fimc_write(ctx, cfg, EXYNOS_CISRCFMT);
668
669 /* offset Y(RGB), Cb, Cr */
670 cfg = (EXYNOS_CIIYOFF_HORIZONTAL(img_pos.x) |
671 EXYNOS_CIIYOFF_VERTICAL(img_pos.y));
672 fimc_write(ctx, cfg, EXYNOS_CIIYOFF);
673 cfg = (EXYNOS_CIICBOFF_HORIZONTAL(img_pos.x) |
674 EXYNOS_CIICBOFF_VERTICAL(img_pos.y));
675 fimc_write(ctx, cfg, EXYNOS_CIICBOFF);
676 cfg = (EXYNOS_CIICROFF_HORIZONTAL(img_pos.x) |
677 EXYNOS_CIICROFF_VERTICAL(img_pos.y));
678 fimc_write(ctx, cfg, EXYNOS_CIICROFF);
679
680 return fimc_set_window(ctx, &img_pos, &img_sz);
681 }
682
683 static int fimc_src_set_addr(struct device *dev,
684 struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id,
685 enum drm_exynos_ipp_buf_type buf_type)
686 {
687 struct fimc_context *ctx = get_fimc_context(dev);
688 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
689 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
690 struct drm_exynos_ipp_property *property;
691 struct drm_exynos_ipp_config *config;
692
693 if (!c_node) {
694 DRM_ERROR("failed to get c_node.\n");
695 return -EINVAL;
696 }
697
698 property = &c_node->property;
699
700 DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n",
701 property->prop_id, buf_id, buf_type);
702
703 if (buf_id > FIMC_MAX_SRC) {
704 dev_info(ippdrv->dev, "invalid buf_id %d.\n", buf_id);
705 return -ENOMEM;
706 }
707
708 /* address register set */
709 switch (buf_type) {
710 case IPP_BUF_ENQUEUE:
711 config = &property->config[EXYNOS_DRM_OPS_SRC];
712 fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_Y],
713 EXYNOS_CIIYSA0);
714
715 if (config->fmt == DRM_FORMAT_YVU420) {
716 fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CR],
717 EXYNOS_CIICBSA0);
718 fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CB],
719 EXYNOS_CIICRSA0);
720 } else {
721 fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CB],
722 EXYNOS_CIICBSA0);
723 fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CR],
724 EXYNOS_CIICRSA0);
725 }
726 break;
727 case IPP_BUF_DEQUEUE:
728 fimc_write(ctx, 0x0, EXYNOS_CIIYSA0);
729 fimc_write(ctx, 0x0, EXYNOS_CIICBSA0);
730 fimc_write(ctx, 0x0, EXYNOS_CIICRSA0);
731 break;
732 default:
733 /* bypass */
734 break;
735 }
736
737 return 0;
738 }
739
740 static struct exynos_drm_ipp_ops fimc_src_ops = {
741 .set_fmt = fimc_src_set_fmt,
742 .set_transf = fimc_src_set_transf,
743 .set_size = fimc_src_set_size,
744 .set_addr = fimc_src_set_addr,
745 };
746
747 static int fimc_dst_set_fmt_order(struct fimc_context *ctx, u32 fmt)
748 {
749 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
750 u32 cfg;
751
752 DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
753
754 /* RGB */
755 cfg = fimc_read(ctx, EXYNOS_CISCCTRL);
756 cfg &= ~EXYNOS_CISCCTRL_OUTRGB_FMT_RGB_MASK;
757
758 switch (fmt) {
759 case DRM_FORMAT_RGB565:
760 cfg |= EXYNOS_CISCCTRL_OUTRGB_FMT_RGB565;
761 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
762 return 0;
763 case DRM_FORMAT_RGB888:
764 cfg |= EXYNOS_CISCCTRL_OUTRGB_FMT_RGB888;
765 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
766 return 0;
767 case DRM_FORMAT_XRGB8888:
768 cfg |= (EXYNOS_CISCCTRL_OUTRGB_FMT_RGB888 |
769 EXYNOS_CISCCTRL_EXTRGB_EXTENSION);
770 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
771 break;
772 default:
773 /* bypass */
774 break;
775 }
776
777 /* YUV */
778 cfg = fimc_read(ctx, EXYNOS_CIOCTRL);
779 cfg &= ~(EXYNOS_CIOCTRL_ORDER2P_MASK |
780 EXYNOS_CIOCTRL_ORDER422_MASK |
781 EXYNOS_CIOCTRL_YCBCR_PLANE_MASK);
782
783 switch (fmt) {
784 case DRM_FORMAT_XRGB8888:
785 cfg |= EXYNOS_CIOCTRL_ALPHA_OUT;
786 break;
787 case DRM_FORMAT_YUYV:
788 cfg |= EXYNOS_CIOCTRL_ORDER422_YCBYCR;
789 break;
790 case DRM_FORMAT_YVYU:
791 cfg |= EXYNOS_CIOCTRL_ORDER422_YCRYCB;
792 break;
793 case DRM_FORMAT_UYVY:
794 cfg |= EXYNOS_CIOCTRL_ORDER422_CBYCRY;
795 break;
796 case DRM_FORMAT_VYUY:
797 cfg |= EXYNOS_CIOCTRL_ORDER422_CRYCBY;
798 break;
799 case DRM_FORMAT_NV21:
800 case DRM_FORMAT_NV61:
801 cfg |= EXYNOS_CIOCTRL_ORDER2P_LSB_CRCB;
802 cfg |= EXYNOS_CIOCTRL_YCBCR_2PLANE;
803 break;
804 case DRM_FORMAT_YUV422:
805 case DRM_FORMAT_YUV420:
806 case DRM_FORMAT_YVU420:
807 cfg |= EXYNOS_CIOCTRL_YCBCR_3PLANE;
808 break;
809 case DRM_FORMAT_NV12:
810 case DRM_FORMAT_NV16:
811 cfg |= EXYNOS_CIOCTRL_ORDER2P_LSB_CBCR;
812 cfg |= EXYNOS_CIOCTRL_YCBCR_2PLANE;
813 break;
814 default:
815 dev_err(ippdrv->dev, "invalid target yuv order 0x%x.\n", fmt);
816 return -EINVAL;
817 }
818
819 fimc_write(ctx, cfg, EXYNOS_CIOCTRL);
820
821 return 0;
822 }
823
824 static int fimc_dst_set_fmt(struct device *dev, u32 fmt)
825 {
826 struct fimc_context *ctx = get_fimc_context(dev);
827 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
828 u32 cfg;
829
830 DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
831
832 cfg = fimc_read(ctx, EXYNOS_CIEXTEN);
833
834 if (fmt == DRM_FORMAT_AYUV) {
835 cfg |= EXYNOS_CIEXTEN_YUV444_OUT;
836 fimc_write(ctx, cfg, EXYNOS_CIEXTEN);
837 } else {
838 cfg &= ~EXYNOS_CIEXTEN_YUV444_OUT;
839 fimc_write(ctx, cfg, EXYNOS_CIEXTEN);
840
841 cfg = fimc_read(ctx, EXYNOS_CITRGFMT);
842 cfg &= ~EXYNOS_CITRGFMT_OUTFORMAT_MASK;
843
844 switch (fmt) {
845 case DRM_FORMAT_RGB565:
846 case DRM_FORMAT_RGB888:
847 case DRM_FORMAT_XRGB8888:
848 cfg |= EXYNOS_CITRGFMT_OUTFORMAT_RGB;
849 break;
850 case DRM_FORMAT_YUYV:
851 case DRM_FORMAT_YVYU:
852 case DRM_FORMAT_UYVY:
853 case DRM_FORMAT_VYUY:
854 cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR422_1PLANE;
855 break;
856 case DRM_FORMAT_NV16:
857 case DRM_FORMAT_NV61:
858 case DRM_FORMAT_YUV422:
859 cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR422;
860 break;
861 case DRM_FORMAT_YUV420:
862 case DRM_FORMAT_YVU420:
863 case DRM_FORMAT_NV12:
864 case DRM_FORMAT_NV21:
865 cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR420;
866 break;
867 default:
868 dev_err(ippdrv->dev, "invalid target format 0x%x.\n",
869 fmt);
870 return -EINVAL;
871 }
872
873 fimc_write(ctx, cfg, EXYNOS_CITRGFMT);
874 }
875
876 cfg = fimc_read(ctx, EXYNOS_CIDMAPARAM);
877 cfg &= ~EXYNOS_CIDMAPARAM_W_MODE_MASK;
878
879 cfg |= EXYNOS_CIDMAPARAM_W_MODE_LINEAR;
880
881 fimc_write(ctx, cfg, EXYNOS_CIDMAPARAM);
882
883 return fimc_dst_set_fmt_order(ctx, fmt);
884 }
885
886 static int fimc_dst_set_transf(struct device *dev,
887 enum drm_exynos_degree degree,
888 enum drm_exynos_flip flip, bool *swap)
889 {
890 struct fimc_context *ctx = get_fimc_context(dev);
891 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
892 u32 cfg;
893
894 DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip);
895
896 cfg = fimc_read(ctx, EXYNOS_CITRGFMT);
897 cfg &= ~EXYNOS_CITRGFMT_FLIP_MASK;
898 cfg &= ~EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE;
899
900 switch (degree) {
901 case EXYNOS_DRM_DEGREE_0:
902 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
903 cfg |= EXYNOS_CITRGFMT_FLIP_X_MIRROR;
904 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
905 cfg |= EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
906 break;
907 case EXYNOS_DRM_DEGREE_90:
908 cfg |= EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE;
909 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
910 cfg |= EXYNOS_CITRGFMT_FLIP_X_MIRROR;
911 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
912 cfg |= EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
913 break;
914 case EXYNOS_DRM_DEGREE_180:
915 cfg |= (EXYNOS_CITRGFMT_FLIP_X_MIRROR |
916 EXYNOS_CITRGFMT_FLIP_Y_MIRROR);
917 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
918 cfg &= ~EXYNOS_CITRGFMT_FLIP_X_MIRROR;
919 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
920 cfg &= ~EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
921 break;
922 case EXYNOS_DRM_DEGREE_270:
923 cfg |= (EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE |
924 EXYNOS_CITRGFMT_FLIP_X_MIRROR |
925 EXYNOS_CITRGFMT_FLIP_Y_MIRROR);
926 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
927 cfg &= ~EXYNOS_CITRGFMT_FLIP_X_MIRROR;
928 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
929 cfg &= ~EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
930 break;
931 default:
932 dev_err(ippdrv->dev, "invalid degree value %d.\n", degree);
933 return -EINVAL;
934 }
935
936 fimc_write(ctx, cfg, EXYNOS_CITRGFMT);
937 *swap = (cfg & EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE) ? 1 : 0;
938
939 return 0;
940 }
941
942 static int fimc_set_prescaler(struct fimc_context *ctx, struct fimc_scaler *sc,
943 struct drm_exynos_pos *src, struct drm_exynos_pos *dst)
944 {
945 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
946 u32 cfg, cfg_ext, shfactor;
947 u32 pre_dst_width, pre_dst_height;
948 u32 hfactor, vfactor;
949 int ret = 0;
950 u32 src_w, src_h, dst_w, dst_h;
951
952 cfg_ext = fimc_read(ctx, EXYNOS_CITRGFMT);
953 if (cfg_ext & EXYNOS_CITRGFMT_INROT90_CLOCKWISE) {
954 src_w = src->h;
955 src_h = src->w;
956 } else {
957 src_w = src->w;
958 src_h = src->h;
959 }
960
961 if (cfg_ext & EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE) {
962 dst_w = dst->h;
963 dst_h = dst->w;
964 } else {
965 dst_w = dst->w;
966 dst_h = dst->h;
967 }
968
969 /* fimc_ippdrv_check_property assures that dividers are not null */
970 hfactor = fls(src_w / dst_w / 2);
971 if (hfactor > FIMC_SHFACTOR / 2) {
972 dev_err(ippdrv->dev, "failed to get ratio horizontal.\n");
973 return -EINVAL;
974 }
975
976 vfactor = fls(src_h / dst_h / 2);
977 if (vfactor > FIMC_SHFACTOR / 2) {
978 dev_err(ippdrv->dev, "failed to get ratio vertical.\n");
979 return -EINVAL;
980 }
981
982 pre_dst_width = src_w >> hfactor;
983 pre_dst_height = src_h >> vfactor;
984 DRM_DEBUG_KMS("pre_dst_width[%d]pre_dst_height[%d]\n",
985 pre_dst_width, pre_dst_height);
986 DRM_DEBUG_KMS("hfactor[%d]vfactor[%d]\n", hfactor, vfactor);
987
988 sc->hratio = (src_w << 14) / (dst_w << hfactor);
989 sc->vratio = (src_h << 14) / (dst_h << vfactor);
990 sc->up_h = (dst_w >= src_w) ? true : false;
991 sc->up_v = (dst_h >= src_h) ? true : false;
992 DRM_DEBUG_KMS("hratio[%d]vratio[%d]up_h[%d]up_v[%d]\n",
993 sc->hratio, sc->vratio, sc->up_h, sc->up_v);
994
995 shfactor = FIMC_SHFACTOR - (hfactor + vfactor);
996 DRM_DEBUG_KMS("shfactor[%d]\n", shfactor);
997
998 cfg = (EXYNOS_CISCPRERATIO_SHFACTOR(shfactor) |
999 EXYNOS_CISCPRERATIO_PREHORRATIO(1 << hfactor) |
1000 EXYNOS_CISCPRERATIO_PREVERRATIO(1 << vfactor));
1001 fimc_write(ctx, cfg, EXYNOS_CISCPRERATIO);
1002
1003 cfg = (EXYNOS_CISCPREDST_PREDSTWIDTH(pre_dst_width) |
1004 EXYNOS_CISCPREDST_PREDSTHEIGHT(pre_dst_height));
1005 fimc_write(ctx, cfg, EXYNOS_CISCPREDST);
1006
1007 return ret;
1008 }
1009
1010 static void fimc_set_scaler(struct fimc_context *ctx, struct fimc_scaler *sc)
1011 {
1012 u32 cfg, cfg_ext;
1013
1014 DRM_DEBUG_KMS("range[%d]bypass[%d]up_h[%d]up_v[%d]\n",
1015 sc->range, sc->bypass, sc->up_h, sc->up_v);
1016 DRM_DEBUG_KMS("hratio[%d]vratio[%d]\n",
1017 sc->hratio, sc->vratio);
1018
1019 cfg = fimc_read(ctx, EXYNOS_CISCCTRL);
1020 cfg &= ~(EXYNOS_CISCCTRL_SCALERBYPASS |
1021 EXYNOS_CISCCTRL_SCALEUP_H | EXYNOS_CISCCTRL_SCALEUP_V |
1022 EXYNOS_CISCCTRL_MAIN_V_RATIO_MASK |
1023 EXYNOS_CISCCTRL_MAIN_H_RATIO_MASK |
1024 EXYNOS_CISCCTRL_CSCR2Y_WIDE |
1025 EXYNOS_CISCCTRL_CSCY2R_WIDE);
1026
1027 if (sc->range)
1028 cfg |= (EXYNOS_CISCCTRL_CSCR2Y_WIDE |
1029 EXYNOS_CISCCTRL_CSCY2R_WIDE);
1030 if (sc->bypass)
1031 cfg |= EXYNOS_CISCCTRL_SCALERBYPASS;
1032 if (sc->up_h)
1033 cfg |= EXYNOS_CISCCTRL_SCALEUP_H;
1034 if (sc->up_v)
1035 cfg |= EXYNOS_CISCCTRL_SCALEUP_V;
1036
1037 cfg |= (EXYNOS_CISCCTRL_MAINHORRATIO((sc->hratio >> 6)) |
1038 EXYNOS_CISCCTRL_MAINVERRATIO((sc->vratio >> 6)));
1039 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
1040
1041 cfg_ext = fimc_read(ctx, EXYNOS_CIEXTEN);
1042 cfg_ext &= ~EXYNOS_CIEXTEN_MAINHORRATIO_EXT_MASK;
1043 cfg_ext &= ~EXYNOS_CIEXTEN_MAINVERRATIO_EXT_MASK;
1044 cfg_ext |= (EXYNOS_CIEXTEN_MAINHORRATIO_EXT(sc->hratio) |
1045 EXYNOS_CIEXTEN_MAINVERRATIO_EXT(sc->vratio));
1046 fimc_write(ctx, cfg_ext, EXYNOS_CIEXTEN);
1047 }
1048
1049 static int fimc_dst_set_size(struct device *dev, int swap,
1050 struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
1051 {
1052 struct fimc_context *ctx = get_fimc_context(dev);
1053 struct drm_exynos_pos img_pos = *pos;
1054 struct drm_exynos_sz img_sz = *sz;
1055 u32 cfg;
1056
1057 DRM_DEBUG_KMS("swap[%d]hsize[%d]vsize[%d]\n",
1058 swap, sz->hsize, sz->vsize);
1059
1060 /* original size */
1061 cfg = (EXYNOS_ORGOSIZE_HORIZONTAL(img_sz.hsize) |
1062 EXYNOS_ORGOSIZE_VERTICAL(img_sz.vsize));
1063
1064 fimc_write(ctx, cfg, EXYNOS_ORGOSIZE);
1065
1066 DRM_DEBUG_KMS("x[%d]y[%d]w[%d]h[%d]\n", pos->x, pos->y, pos->w, pos->h);
1067
1068 /* CSC ITU */
1069 cfg = fimc_read(ctx, EXYNOS_CIGCTRL);
1070 cfg &= ~EXYNOS_CIGCTRL_CSC_MASK;
1071
1072 if (sz->hsize >= FIMC_WIDTH_ITU_709)
1073 cfg |= EXYNOS_CIGCTRL_CSC_ITU709;
1074 else
1075 cfg |= EXYNOS_CIGCTRL_CSC_ITU601;
1076
1077 fimc_write(ctx, cfg, EXYNOS_CIGCTRL);
1078
1079 if (swap) {
1080 img_pos.w = pos->h;
1081 img_pos.h = pos->w;
1082 img_sz.hsize = sz->vsize;
1083 img_sz.vsize = sz->hsize;
1084 }
1085
1086 /* target image size */
1087 cfg = fimc_read(ctx, EXYNOS_CITRGFMT);
1088 cfg &= ~(EXYNOS_CITRGFMT_TARGETH_MASK |
1089 EXYNOS_CITRGFMT_TARGETV_MASK);
1090 cfg |= (EXYNOS_CITRGFMT_TARGETHSIZE(img_pos.w) |
1091 EXYNOS_CITRGFMT_TARGETVSIZE(img_pos.h));
1092 fimc_write(ctx, cfg, EXYNOS_CITRGFMT);
1093
1094 /* target area */
1095 cfg = EXYNOS_CITAREA_TARGET_AREA(img_pos.w * img_pos.h);
1096 fimc_write(ctx, cfg, EXYNOS_CITAREA);
1097
1098 /* offset Y(RGB), Cb, Cr */
1099 cfg = (EXYNOS_CIOYOFF_HORIZONTAL(img_pos.x) |
1100 EXYNOS_CIOYOFF_VERTICAL(img_pos.y));
1101 fimc_write(ctx, cfg, EXYNOS_CIOYOFF);
1102 cfg = (EXYNOS_CIOCBOFF_HORIZONTAL(img_pos.x) |
1103 EXYNOS_CIOCBOFF_VERTICAL(img_pos.y));
1104 fimc_write(ctx, cfg, EXYNOS_CIOCBOFF);
1105 cfg = (EXYNOS_CIOCROFF_HORIZONTAL(img_pos.x) |
1106 EXYNOS_CIOCROFF_VERTICAL(img_pos.y));
1107 fimc_write(ctx, cfg, EXYNOS_CIOCROFF);
1108
1109 return 0;
1110 }
1111
1112 static void fimc_dst_set_buf_seq(struct fimc_context *ctx, u32 buf_id,
1113 enum drm_exynos_ipp_buf_type buf_type)
1114 {
1115 unsigned long flags;
1116 u32 buf_num;
1117 u32 cfg;
1118
1119 DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type);
1120
1121 spin_lock_irqsave(&ctx->lock, flags);
1122
1123 cfg = fimc_read(ctx, EXYNOS_CIFCNTSEQ);
1124
1125 if (buf_type == IPP_BUF_ENQUEUE)
1126 cfg |= (1 << buf_id);
1127 else
1128 cfg &= ~(1 << buf_id);
1129
1130 fimc_write(ctx, cfg, EXYNOS_CIFCNTSEQ);
1131
1132 buf_num = hweight32(cfg);
1133
1134 if (buf_type == IPP_BUF_ENQUEUE && buf_num >= FIMC_BUF_START)
1135 fimc_mask_irq(ctx, true);
1136 else if (buf_type == IPP_BUF_DEQUEUE && buf_num <= FIMC_BUF_STOP)
1137 fimc_mask_irq(ctx, false);
1138
1139 spin_unlock_irqrestore(&ctx->lock, flags);
1140 }
1141
1142 static int fimc_dst_set_addr(struct device *dev,
1143 struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id,
1144 enum drm_exynos_ipp_buf_type buf_type)
1145 {
1146 struct fimc_context *ctx = get_fimc_context(dev);
1147 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1148 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
1149 struct drm_exynos_ipp_property *property;
1150 struct drm_exynos_ipp_config *config;
1151
1152 if (!c_node) {
1153 DRM_ERROR("failed to get c_node.\n");
1154 return -EINVAL;
1155 }
1156
1157 property = &c_node->property;
1158
1159 DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n",
1160 property->prop_id, buf_id, buf_type);
1161
1162 if (buf_id > FIMC_MAX_DST) {
1163 dev_info(ippdrv->dev, "invalid buf_id %d.\n", buf_id);
1164 return -ENOMEM;
1165 }
1166
1167 /* address register set */
1168 switch (buf_type) {
1169 case IPP_BUF_ENQUEUE:
1170 config = &property->config[EXYNOS_DRM_OPS_DST];
1171
1172 fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_Y],
1173 EXYNOS_CIOYSA(buf_id));
1174
1175 if (config->fmt == DRM_FORMAT_YVU420) {
1176 fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CR],
1177 EXYNOS_CIOCBSA(buf_id));
1178 fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CB],
1179 EXYNOS_CIOCRSA(buf_id));
1180 } else {
1181 fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CB],
1182 EXYNOS_CIOCBSA(buf_id));
1183 fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CR],
1184 EXYNOS_CIOCRSA(buf_id));
1185 }
1186 break;
1187 case IPP_BUF_DEQUEUE:
1188 fimc_write(ctx, 0x0, EXYNOS_CIOYSA(buf_id));
1189 fimc_write(ctx, 0x0, EXYNOS_CIOCBSA(buf_id));
1190 fimc_write(ctx, 0x0, EXYNOS_CIOCRSA(buf_id));
1191 break;
1192 default:
1193 /* bypass */
1194 break;
1195 }
1196
1197 fimc_dst_set_buf_seq(ctx, buf_id, buf_type);
1198
1199 return 0;
1200 }
1201
1202 static struct exynos_drm_ipp_ops fimc_dst_ops = {
1203 .set_fmt = fimc_dst_set_fmt,
1204 .set_transf = fimc_dst_set_transf,
1205 .set_size = fimc_dst_set_size,
1206 .set_addr = fimc_dst_set_addr,
1207 };
1208
1209 static irqreturn_t fimc_irq_handler(int irq, void *dev_id)
1210 {
1211 struct fimc_context *ctx = dev_id;
1212 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1213 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
1214 struct drm_exynos_ipp_event_work *event_work =
1215 c_node->event_work;
1216 int buf_id;
1217
1218 DRM_DEBUG_KMS("fimc id[%d]\n", ctx->id);
1219
1220 fimc_clear_irq(ctx);
1221 if (fimc_check_ovf(ctx))
1222 return IRQ_NONE;
1223
1224 if (!fimc_check_frame_end(ctx))
1225 return IRQ_NONE;
1226
1227 buf_id = fimc_get_buf_id(ctx);
1228 if (buf_id < 0)
1229 return IRQ_HANDLED;
1230
1231 DRM_DEBUG_KMS("buf_id[%d]\n", buf_id);
1232
1233 fimc_dst_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE);
1234
1235 event_work->ippdrv = ippdrv;
1236 event_work->buf_id[EXYNOS_DRM_OPS_DST] = buf_id;
1237 queue_work(ippdrv->event_workq, &event_work->work);
1238
1239 return IRQ_HANDLED;
1240 }
1241
1242 static int fimc_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
1243 {
1244 struct drm_exynos_ipp_prop_list *prop_list = &ippdrv->prop_list;
1245
1246 prop_list->version = 1;
1247 prop_list->writeback = 1;
1248 prop_list->refresh_min = FIMC_REFRESH_MIN;
1249 prop_list->refresh_max = FIMC_REFRESH_MAX;
1250 prop_list->flip = (1 << EXYNOS_DRM_FLIP_NONE) |
1251 (1 << EXYNOS_DRM_FLIP_VERTICAL) |
1252 (1 << EXYNOS_DRM_FLIP_HORIZONTAL);
1253 prop_list->degree = (1 << EXYNOS_DRM_DEGREE_0) |
1254 (1 << EXYNOS_DRM_DEGREE_90) |
1255 (1 << EXYNOS_DRM_DEGREE_180) |
1256 (1 << EXYNOS_DRM_DEGREE_270);
1257 prop_list->csc = 1;
1258 prop_list->crop = 1;
1259 prop_list->crop_max.hsize = FIMC_CROP_MAX;
1260 prop_list->crop_max.vsize = FIMC_CROP_MAX;
1261 prop_list->crop_min.hsize = FIMC_CROP_MIN;
1262 prop_list->crop_min.vsize = FIMC_CROP_MIN;
1263 prop_list->scale = 1;
1264 prop_list->scale_max.hsize = FIMC_SCALE_MAX;
1265 prop_list->scale_max.vsize = FIMC_SCALE_MAX;
1266 prop_list->scale_min.hsize = FIMC_SCALE_MIN;
1267 prop_list->scale_min.vsize = FIMC_SCALE_MIN;
1268
1269 return 0;
1270 }
1271
1272 static inline bool fimc_check_drm_flip(enum drm_exynos_flip flip)
1273 {
1274 switch (flip) {
1275 case EXYNOS_DRM_FLIP_NONE:
1276 case EXYNOS_DRM_FLIP_VERTICAL:
1277 case EXYNOS_DRM_FLIP_HORIZONTAL:
1278 case EXYNOS_DRM_FLIP_BOTH:
1279 return true;
1280 default:
1281 DRM_DEBUG_KMS("invalid flip\n");
1282 return false;
1283 }
1284 }
1285
1286 static int fimc_ippdrv_check_property(struct device *dev,
1287 struct drm_exynos_ipp_property *property)
1288 {
1289 struct fimc_context *ctx = get_fimc_context(dev);
1290 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1291 struct drm_exynos_ipp_prop_list *pp = &ippdrv->prop_list;
1292 struct drm_exynos_ipp_config *config;
1293 struct drm_exynos_pos *pos;
1294 struct drm_exynos_sz *sz;
1295 bool swap;
1296 int i;
1297
1298 for_each_ipp_ops(i) {
1299 if ((i == EXYNOS_DRM_OPS_SRC) &&
1300 (property->cmd == IPP_CMD_WB))
1301 continue;
1302
1303 config = &property->config[i];
1304 pos = &config->pos;
1305 sz = &config->sz;
1306
1307 /* check for flip */
1308 if (!fimc_check_drm_flip(config->flip)) {
1309 DRM_ERROR("invalid flip.\n");
1310 goto err_property;
1311 }
1312
1313 /* check for degree */
1314 switch (config->degree) {
1315 case EXYNOS_DRM_DEGREE_90:
1316 case EXYNOS_DRM_DEGREE_270:
1317 swap = true;
1318 break;
1319 case EXYNOS_DRM_DEGREE_0:
1320 case EXYNOS_DRM_DEGREE_180:
1321 swap = false;
1322 break;
1323 default:
1324 DRM_ERROR("invalid degree.\n");
1325 goto err_property;
1326 }
1327
1328 /* check for buffer bound */
1329 if ((pos->x + pos->w > sz->hsize) ||
1330 (pos->y + pos->h > sz->vsize)) {
1331 DRM_ERROR("out of buf bound.\n");
1332 goto err_property;
1333 }
1334
1335 /* check for crop */
1336 if ((i == EXYNOS_DRM_OPS_SRC) && (pp->crop)) {
1337 if (swap) {
1338 if ((pos->h < pp->crop_min.hsize) ||
1339 (sz->vsize > pp->crop_max.hsize) ||
1340 (pos->w < pp->crop_min.vsize) ||
1341 (sz->hsize > pp->crop_max.vsize)) {
1342 DRM_ERROR("out of crop size.\n");
1343 goto err_property;
1344 }
1345 } else {
1346 if ((pos->w < pp->crop_min.hsize) ||
1347 (sz->hsize > pp->crop_max.hsize) ||
1348 (pos->h < pp->crop_min.vsize) ||
1349 (sz->vsize > pp->crop_max.vsize)) {
1350 DRM_ERROR("out of crop size.\n");
1351 goto err_property;
1352 }
1353 }
1354 }
1355
1356 /* check for scale */
1357 if ((i == EXYNOS_DRM_OPS_DST) && (pp->scale)) {
1358 if (swap) {
1359 if ((pos->h < pp->scale_min.hsize) ||
1360 (sz->vsize > pp->scale_max.hsize) ||
1361 (pos->w < pp->scale_min.vsize) ||
1362 (sz->hsize > pp->scale_max.vsize)) {
1363 DRM_ERROR("out of scale size.\n");
1364 goto err_property;
1365 }
1366 } else {
1367 if ((pos->w < pp->scale_min.hsize) ||
1368 (sz->hsize > pp->scale_max.hsize) ||
1369 (pos->h < pp->scale_min.vsize) ||
1370 (sz->vsize > pp->scale_max.vsize)) {
1371 DRM_ERROR("out of scale size.\n");
1372 goto err_property;
1373 }
1374 }
1375 }
1376 }
1377
1378 return 0;
1379
1380 err_property:
1381 for_each_ipp_ops(i) {
1382 if ((i == EXYNOS_DRM_OPS_SRC) &&
1383 (property->cmd == IPP_CMD_WB))
1384 continue;
1385
1386 config = &property->config[i];
1387 pos = &config->pos;
1388 sz = &config->sz;
1389
1390 DRM_ERROR("[%s]f[%d]r[%d]pos[%d %d %d %d]sz[%d %d]\n",
1391 i ? "dst" : "src", config->flip, config->degree,
1392 pos->x, pos->y, pos->w, pos->h,
1393 sz->hsize, sz->vsize);
1394 }
1395
1396 return -EINVAL;
1397 }
1398
1399 static void fimc_clear_addr(struct fimc_context *ctx)
1400 {
1401 int i;
1402
1403 for (i = 0; i < FIMC_MAX_SRC; i++) {
1404 fimc_write(ctx, 0, EXYNOS_CIIYSA(i));
1405 fimc_write(ctx, 0, EXYNOS_CIICBSA(i));
1406 fimc_write(ctx, 0, EXYNOS_CIICRSA(i));
1407 }
1408
1409 for (i = 0; i < FIMC_MAX_DST; i++) {
1410 fimc_write(ctx, 0, EXYNOS_CIOYSA(i));
1411 fimc_write(ctx, 0, EXYNOS_CIOCBSA(i));
1412 fimc_write(ctx, 0, EXYNOS_CIOCRSA(i));
1413 }
1414 }
1415
1416 static int fimc_ippdrv_reset(struct device *dev)
1417 {
1418 struct fimc_context *ctx = get_fimc_context(dev);
1419
1420 /* reset h/w block */
1421 fimc_sw_reset(ctx);
1422
1423 /* reset scaler capability */
1424 memset(&ctx->sc, 0x0, sizeof(ctx->sc));
1425
1426 fimc_clear_addr(ctx);
1427
1428 return 0;
1429 }
1430
1431 static int fimc_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd cmd)
1432 {
1433 struct fimc_context *ctx = get_fimc_context(dev);
1434 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1435 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
1436 struct drm_exynos_ipp_property *property;
1437 struct drm_exynos_ipp_config *config;
1438 struct drm_exynos_pos img_pos[EXYNOS_DRM_OPS_MAX];
1439 struct drm_exynos_ipp_set_wb set_wb;
1440 int ret, i;
1441 u32 cfg0, cfg1;
1442
1443 DRM_DEBUG_KMS("cmd[%d]\n", cmd);
1444
1445 if (!c_node) {
1446 DRM_ERROR("failed to get c_node.\n");
1447 return -EINVAL;
1448 }
1449
1450 property = &c_node->property;
1451
1452 fimc_mask_irq(ctx, true);
1453
1454 for_each_ipp_ops(i) {
1455 config = &property->config[i];
1456 img_pos[i] = config->pos;
1457 }
1458
1459 ret = fimc_set_prescaler(ctx, &ctx->sc,
1460 &img_pos[EXYNOS_DRM_OPS_SRC],
1461 &img_pos[EXYNOS_DRM_OPS_DST]);
1462 if (ret) {
1463 dev_err(dev, "failed to set precalser.\n");
1464 return ret;
1465 }
1466
1467 /* If set ture, we can save jpeg about screen */
1468 fimc_handle_jpeg(ctx, false);
1469 fimc_set_scaler(ctx, &ctx->sc);
1470 fimc_set_polarity(ctx, &ctx->pol);
1471
1472 switch (cmd) {
1473 case IPP_CMD_M2M:
1474 fimc_set_type_ctrl(ctx, FIMC_WB_NONE);
1475 fimc_handle_lastend(ctx, false);
1476
1477 /* setup dma */
1478 cfg0 = fimc_read(ctx, EXYNOS_MSCTRL);
1479 cfg0 &= ~EXYNOS_MSCTRL_INPUT_MASK;
1480 cfg0 |= EXYNOS_MSCTRL_INPUT_MEMORY;
1481 fimc_write(ctx, cfg0, EXYNOS_MSCTRL);
1482 break;
1483 case IPP_CMD_WB:
1484 fimc_set_type_ctrl(ctx, FIMC_WB_A);
1485 fimc_handle_lastend(ctx, true);
1486
1487 /* setup FIMD */
1488 ret = fimc_set_camblk_fimd0_wb(ctx);
1489 if (ret < 0) {
1490 dev_err(dev, "camblk setup failed.\n");
1491 return ret;
1492 }
1493
1494 set_wb.enable = 1;
1495 set_wb.refresh = property->refresh_rate;
1496 exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb);
1497 break;
1498 case IPP_CMD_OUTPUT:
1499 default:
1500 ret = -EINVAL;
1501 dev_err(dev, "invalid operations.\n");
1502 return ret;
1503 }
1504
1505 /* Reset status */
1506 fimc_write(ctx, 0x0, EXYNOS_CISTATUS);
1507
1508 cfg0 = fimc_read(ctx, EXYNOS_CIIMGCPT);
1509 cfg0 &= ~EXYNOS_CIIMGCPT_IMGCPTEN_SC;
1510 cfg0 |= EXYNOS_CIIMGCPT_IMGCPTEN_SC;
1511
1512 /* Scaler */
1513 cfg1 = fimc_read(ctx, EXYNOS_CISCCTRL);
1514 cfg1 &= ~EXYNOS_CISCCTRL_SCAN_MASK;
1515 cfg1 |= (EXYNOS_CISCCTRL_PROGRESSIVE |
1516 EXYNOS_CISCCTRL_SCALERSTART);
1517
1518 fimc_write(ctx, cfg1, EXYNOS_CISCCTRL);
1519
1520 /* Enable image capture*/
1521 cfg0 |= EXYNOS_CIIMGCPT_IMGCPTEN;
1522 fimc_write(ctx, cfg0, EXYNOS_CIIMGCPT);
1523
1524 /* Disable frame end irq */
1525 fimc_clear_bits(ctx, EXYNOS_CIGCTRL, EXYNOS_CIGCTRL_IRQ_END_DISABLE);
1526
1527 fimc_clear_bits(ctx, EXYNOS_CIOCTRL, EXYNOS_CIOCTRL_WEAVE_MASK);
1528
1529 if (cmd == IPP_CMD_M2M)
1530 fimc_set_bits(ctx, EXYNOS_MSCTRL, EXYNOS_MSCTRL_ENVID);
1531
1532 return 0;
1533 }
1534
1535 static void fimc_ippdrv_stop(struct device *dev, enum drm_exynos_ipp_cmd cmd)
1536 {
1537 struct fimc_context *ctx = get_fimc_context(dev);
1538 struct drm_exynos_ipp_set_wb set_wb = {0, 0};
1539 u32 cfg;
1540
1541 DRM_DEBUG_KMS("cmd[%d]\n", cmd);
1542
1543 switch (cmd) {
1544 case IPP_CMD_M2M:
1545 /* Source clear */
1546 cfg = fimc_read(ctx, EXYNOS_MSCTRL);
1547 cfg &= ~EXYNOS_MSCTRL_INPUT_MASK;
1548 cfg &= ~EXYNOS_MSCTRL_ENVID;
1549 fimc_write(ctx, cfg, EXYNOS_MSCTRL);
1550 break;
1551 case IPP_CMD_WB:
1552 exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb);
1553 break;
1554 case IPP_CMD_OUTPUT:
1555 default:
1556 dev_err(dev, "invalid operations.\n");
1557 break;
1558 }
1559
1560 fimc_mask_irq(ctx, false);
1561
1562 /* reset sequence */
1563 fimc_write(ctx, 0x0, EXYNOS_CIFCNTSEQ);
1564
1565 /* Scaler disable */
1566 fimc_clear_bits(ctx, EXYNOS_CISCCTRL, EXYNOS_CISCCTRL_SCALERSTART);
1567
1568 /* Disable image capture */
1569 fimc_clear_bits(ctx, EXYNOS_CIIMGCPT,
1570 EXYNOS_CIIMGCPT_IMGCPTEN_SC | EXYNOS_CIIMGCPT_IMGCPTEN);
1571
1572 /* Enable frame end irq */
1573 fimc_set_bits(ctx, EXYNOS_CIGCTRL, EXYNOS_CIGCTRL_IRQ_END_DISABLE);
1574 }
1575
1576 static void fimc_put_clocks(struct fimc_context *ctx)
1577 {
1578 int i;
1579
1580 for (i = 0; i < FIMC_CLKS_MAX; i++) {
1581 if (IS_ERR(ctx->clocks[i]))
1582 continue;
1583 clk_put(ctx->clocks[i]);
1584 ctx->clocks[i] = ERR_PTR(-EINVAL);
1585 }
1586 }
1587
1588 static int fimc_setup_clocks(struct fimc_context *ctx)
1589 {
1590 struct device *fimc_dev = ctx->ippdrv.dev;
1591 struct device *dev;
1592 int ret, i;
1593
1594 for (i = 0; i < FIMC_CLKS_MAX; i++)
1595 ctx->clocks[i] = ERR_PTR(-EINVAL);
1596
1597 for (i = 0; i < FIMC_CLKS_MAX; i++) {
1598 if (i == FIMC_CLK_WB_A || i == FIMC_CLK_WB_B)
1599 dev = fimc_dev->parent;
1600 else
1601 dev = fimc_dev;
1602
1603 ctx->clocks[i] = clk_get(dev, fimc_clock_names[i]);
1604 if (IS_ERR(ctx->clocks[i])) {
1605 if (i >= FIMC_CLK_MUX)
1606 break;
1607 ret = PTR_ERR(ctx->clocks[i]);
1608 dev_err(fimc_dev, "failed to get clock: %s\n",
1609 fimc_clock_names[i]);
1610 goto e_clk_free;
1611 }
1612 }
1613
1614 /* Optional FIMC LCLK parent clock setting */
1615 if (!IS_ERR(ctx->clocks[FIMC_CLK_PARENT])) {
1616 ret = clk_set_parent(ctx->clocks[FIMC_CLK_MUX],
1617 ctx->clocks[FIMC_CLK_PARENT]);
1618 if (ret < 0) {
1619 dev_err(fimc_dev, "failed to set parent.\n");
1620 goto e_clk_free;
1621 }
1622 }
1623
1624 ret = clk_set_rate(ctx->clocks[FIMC_CLK_LCLK], ctx->clk_frequency);
1625 if (ret < 0)
1626 goto e_clk_free;
1627
1628 ret = clk_prepare_enable(ctx->clocks[FIMC_CLK_LCLK]);
1629 if (!ret)
1630 return ret;
1631 e_clk_free:
1632 fimc_put_clocks(ctx);
1633 return ret;
1634 }
1635
1636 static int fimc_parse_dt(struct fimc_context *ctx)
1637 {
1638 struct device_node *node = ctx->ippdrv.dev->of_node;
1639
1640 /* Handle only devices that support the LCD Writeback data path */
1641 if (!of_property_read_bool(node, "samsung,lcd-wb"))
1642 return -ENODEV;
1643
1644 if (of_property_read_u32(node, "clock-frequency",
1645 &ctx->clk_frequency))
1646 ctx->clk_frequency = FIMC_DEFAULT_LCLK_FREQUENCY;
1647
1648 ctx->id = of_alias_get_id(node, "fimc");
1649
1650 if (ctx->id < 0) {
1651 dev_err(ctx->ippdrv.dev, "failed to get node alias id.\n");
1652 return -EINVAL;
1653 }
1654
1655 return 0;
1656 }
1657
1658 static int fimc_probe(struct platform_device *pdev)
1659 {
1660 struct device *dev = &pdev->dev;
1661 struct fimc_context *ctx;
1662 struct resource *res;
1663 struct exynos_drm_ippdrv *ippdrv;
1664 int ret;
1665
1666 if (!dev->of_node) {
1667 dev_err(dev, "device tree node not found.\n");
1668 return -ENODEV;
1669 }
1670
1671 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
1672 if (!ctx)
1673 return -ENOMEM;
1674
1675 ctx->ippdrv.dev = dev;
1676
1677 ret = fimc_parse_dt(ctx);
1678 if (ret < 0)
1679 return ret;
1680
1681 ctx->sysreg = syscon_regmap_lookup_by_phandle(dev->of_node,
1682 "samsung,sysreg");
1683 if (IS_ERR(ctx->sysreg)) {
1684 dev_err(dev, "syscon regmap lookup failed.\n");
1685 return PTR_ERR(ctx->sysreg);
1686 }
1687
1688 /* resource memory */
1689 ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1690 ctx->regs = devm_ioremap_resource(dev, ctx->regs_res);
1691 if (IS_ERR(ctx->regs))
1692 return PTR_ERR(ctx->regs);
1693
1694 /* resource irq */
1695 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1696 if (!res) {
1697 dev_err(dev, "failed to request irq resource.\n");
1698 return -ENOENT;
1699 }
1700
1701 ctx->irq = res->start;
1702 ret = devm_request_threaded_irq(dev, ctx->irq, NULL, fimc_irq_handler,
1703 IRQF_ONESHOT, "drm_fimc", ctx);
1704 if (ret < 0) {
1705 dev_err(dev, "failed to request irq.\n");
1706 return ret;
1707 }
1708
1709 ret = fimc_setup_clocks(ctx);
1710 if (ret < 0)
1711 return ret;
1712
1713 ippdrv = &ctx->ippdrv;
1714 ippdrv->ops[EXYNOS_DRM_OPS_SRC] = &fimc_src_ops;
1715 ippdrv->ops[EXYNOS_DRM_OPS_DST] = &fimc_dst_ops;
1716 ippdrv->check_property = fimc_ippdrv_check_property;
1717 ippdrv->reset = fimc_ippdrv_reset;
1718 ippdrv->start = fimc_ippdrv_start;
1719 ippdrv->stop = fimc_ippdrv_stop;
1720 ret = fimc_init_prop_list(ippdrv);
1721 if (ret < 0) {
1722 dev_err(dev, "failed to init property list.\n");
1723 goto err_put_clk;
1724 }
1725
1726 DRM_DEBUG_KMS("id[%d]ippdrv[0x%x]\n", ctx->id, (int)ippdrv);
1727
1728 spin_lock_init(&ctx->lock);
1729 platform_set_drvdata(pdev, ctx);
1730
1731 pm_runtime_enable(dev);
1732
1733 ret = exynos_drm_ippdrv_register(ippdrv);
1734 if (ret < 0) {
1735 dev_err(dev, "failed to register drm fimc device.\n");
1736 goto err_pm_dis;
1737 }
1738
1739 dev_info(dev, "drm fimc registered successfully.\n");
1740
1741 return 0;
1742
1743 err_pm_dis:
1744 pm_runtime_disable(dev);
1745 err_put_clk:
1746 fimc_put_clocks(ctx);
1747
1748 return ret;
1749 }
1750
1751 static int fimc_remove(struct platform_device *pdev)
1752 {
1753 struct device *dev = &pdev->dev;
1754 struct fimc_context *ctx = get_fimc_context(dev);
1755 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1756
1757 exynos_drm_ippdrv_unregister(ippdrv);
1758
1759 fimc_put_clocks(ctx);
1760 pm_runtime_set_suspended(dev);
1761 pm_runtime_disable(dev);
1762
1763 return 0;
1764 }
1765
1766 #ifdef CONFIG_PM
1767 static int fimc_clk_ctrl(struct fimc_context *ctx, bool enable)
1768 {
1769 DRM_DEBUG_KMS("enable[%d]\n", enable);
1770
1771 if (enable) {
1772 clk_prepare_enable(ctx->clocks[FIMC_CLK_GATE]);
1773 clk_prepare_enable(ctx->clocks[FIMC_CLK_WB_A]);
1774 ctx->suspended = false;
1775 } else {
1776 clk_disable_unprepare(ctx->clocks[FIMC_CLK_GATE]);
1777 clk_disable_unprepare(ctx->clocks[FIMC_CLK_WB_A]);
1778 ctx->suspended = true;
1779 }
1780
1781 return 0;
1782 }
1783
1784 #ifdef CONFIG_PM_SLEEP
1785 static int fimc_suspend(struct device *dev)
1786 {
1787 struct fimc_context *ctx = get_fimc_context(dev);
1788
1789 DRM_DEBUG_KMS("id[%d]\n", ctx->id);
1790
1791 if (pm_runtime_suspended(dev))
1792 return 0;
1793
1794 return fimc_clk_ctrl(ctx, false);
1795 }
1796
1797 static int fimc_resume(struct device *dev)
1798 {
1799 struct fimc_context *ctx = get_fimc_context(dev);
1800
1801 DRM_DEBUG_KMS("id[%d]\n", ctx->id);
1802
1803 if (!pm_runtime_suspended(dev))
1804 return fimc_clk_ctrl(ctx, true);
1805
1806 return 0;
1807 }
1808 #endif
1809
1810 static int fimc_runtime_suspend(struct device *dev)
1811 {
1812 struct fimc_context *ctx = get_fimc_context(dev);
1813
1814 DRM_DEBUG_KMS("id[%d]\n", ctx->id);
1815
1816 return fimc_clk_ctrl(ctx, false);
1817 }
1818
1819 static int fimc_runtime_resume(struct device *dev)
1820 {
1821 struct fimc_context *ctx = get_fimc_context(dev);
1822
1823 DRM_DEBUG_KMS("id[%d]\n", ctx->id);
1824
1825 return fimc_clk_ctrl(ctx, true);
1826 }
1827 #endif
1828
1829 static const struct dev_pm_ops fimc_pm_ops = {
1830 SET_SYSTEM_SLEEP_PM_OPS(fimc_suspend, fimc_resume)
1831 SET_RUNTIME_PM_OPS(fimc_runtime_suspend, fimc_runtime_resume, NULL)
1832 };
1833
1834 static const struct of_device_id fimc_of_match[] = {
1835 { .compatible = "samsung,exynos4210-fimc" },
1836 { .compatible = "samsung,exynos4212-fimc" },
1837 { },
1838 };
1839 MODULE_DEVICE_TABLE(of, fimc_of_match);
1840
1841 struct platform_driver fimc_driver = {
1842 .probe = fimc_probe,
1843 .remove = fimc_remove,
1844 .driver = {
1845 .of_match_table = fimc_of_match,
1846 .name = "exynos-drm-fimc",
1847 .owner = THIS_MODULE,
1848 .pm = &fimc_pm_ops,
1849 },
1850 };
1851
Linux with added FPC-III support