1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2012 Samsung Electronics Co.Ltd
4 * Authors:
5 * Eunchul Kim <chulspro.kim@samsung.com>
6 * Jinyoung Jeon <jy0.jeon@samsung.com>
7 * Sangmin Lee <lsmin.lee@samsung.com>
8 */
9
10 #include <linux/clk.h>
11 #include <linux/component.h>
12 #include <linux/kernel.h>
13 #include <linux/mfd/syscon.h>
14 #include <linux/of.h>
15 #include <linux/platform_device.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/regmap.h>
18 #include <linux/spinlock.h>
19
20 #include <drm/drm_fourcc.h>
21 #include <drm/drm_print.h>
22 #include <drm/exynos_drm.h>
23
24 #include "exynos_drm_drv.h"
25 #include "exynos_drm_ipp.h"
26 #include "regs-fimc.h"
27
28 /*
29 * FIMC stands for Fully Interactive Mobile Camera and
30 * supports image scaler/rotator and input/output DMA operations.
31 * input DMA reads image data from the memory.
32 * output DMA writes image data to memory.
33 * FIMC supports image rotation and image effect functions.
34 */
35
36 #define FIMC_MAX_DEVS 4
37 #define FIMC_MAX_SRC 2
38 #define FIMC_MAX_DST 32
39 #define FIMC_SHFACTOR 10
40 #define FIMC_BUF_STOP 1
41 #define FIMC_BUF_START 2
42 #define FIMC_WIDTH_ITU_709 1280
43 #define FIMC_AUTOSUSPEND_DELAY 2000
44
45 static unsigned int fimc_mask = 0xc;
46 module_param_named(fimc_devs, fimc_mask, uint, 0644);
47 MODULE_PARM_DESC(fimc_devs, "Alias mask for assigning FIMC devices to Exynos DRM");
48
49 #define get_fimc_context(dev) dev_get_drvdata(dev)
50
51 enum {
52 FIMC_CLK_LCLK,
53 FIMC_CLK_GATE,
54 FIMC_CLK_WB_A,
55 FIMC_CLK_WB_B,
56 FIMC_CLKS_MAX
57 };
58
59 static const char * const fimc_clock_names[] = {
60 [FIMC_CLK_LCLK] = "sclk_fimc",
61 [FIMC_CLK_GATE] = "fimc",
62 [FIMC_CLK_WB_A] = "pxl_async0",
63 [FIMC_CLK_WB_B] = "pxl_async1",
64 };
65
66 /*
67 * A structure of scaler.
68 *
69 * @range: narrow, wide.
70 * @bypass: unused scaler path.
71 * @up_h: horizontal scale up.
72 * @up_v: vertical scale up.
73 * @hratio: horizontal ratio.
74 * @vratio: vertical ratio.
75 */
76 struct fimc_scaler {
77 bool range;
78 bool bypass;
79 bool up_h;
80 bool up_v;
81 u32 hratio;
82 u32 vratio;
83 };
84
85 /*
86 * A structure of fimc context.
87 *
88 * @regs: memory mapped io registers.
89 * @lock: locking of operations.
90 * @clocks: fimc clocks.
91 * @sc: scaler infomations.
92 * @pol: porarity of writeback.
93 * @id: fimc id.
94 * @irq: irq number.
95 */
96 struct fimc_context {
97 struct exynos_drm_ipp ipp;
98 struct drm_device *drm_dev;
99 void *dma_priv;
100 struct device *dev;
101 struct exynos_drm_ipp_task *task;
102 struct exynos_drm_ipp_formats *formats;
103 unsigned int num_formats;
104
105 void __iomem *regs;
106 spinlock_t lock;
107 struct clk *clocks[FIMC_CLKS_MAX];
108 struct fimc_scaler sc;
109 int id;
110 int irq;
111 };
112
fimc_read(struct fimc_context * ctx,u32 reg)113 static u32 fimc_read(struct fimc_context *ctx, u32 reg)
114 {
115 return readl(ctx->regs + reg);
116 }
117
fimc_write(struct fimc_context * ctx,u32 val,u32 reg)118 static void fimc_write(struct fimc_context *ctx, u32 val, u32 reg)
119 {
120 writel(val, ctx->regs + reg);
121 }
122
fimc_set_bits(struct fimc_context * ctx,u32 reg,u32 bits)123 static void fimc_set_bits(struct fimc_context *ctx, u32 reg, u32 bits)
124 {
125 void __iomem *r = ctx->regs + reg;
126
127 writel(readl(r) | bits, r);
128 }
129
fimc_clear_bits(struct fimc_context * ctx,u32 reg,u32 bits)130 static void fimc_clear_bits(struct fimc_context *ctx, u32 reg, u32 bits)
131 {
132 void __iomem *r = ctx->regs + reg;
133
134 writel(readl(r) & ~bits, r);
135 }
136
fimc_sw_reset(struct fimc_context * ctx)137 static void fimc_sw_reset(struct fimc_context *ctx)
138 {
139 u32 cfg;
140
141 /* stop dma operation */
142 cfg = fimc_read(ctx, EXYNOS_CISTATUS);
143 if (EXYNOS_CISTATUS_GET_ENVID_STATUS(cfg))
144 fimc_clear_bits(ctx, EXYNOS_MSCTRL, EXYNOS_MSCTRL_ENVID);
145
146 fimc_set_bits(ctx, EXYNOS_CISRCFMT, EXYNOS_CISRCFMT_ITU601_8BIT);
147
148 /* disable image capture */
149 fimc_clear_bits(ctx, EXYNOS_CIIMGCPT,
150 EXYNOS_CIIMGCPT_IMGCPTEN_SC | EXYNOS_CIIMGCPT_IMGCPTEN);
151
152 /* s/w reset */
153 fimc_set_bits(ctx, EXYNOS_CIGCTRL, EXYNOS_CIGCTRL_SWRST);
154
155 /* s/w reset complete */
156 fimc_clear_bits(ctx, EXYNOS_CIGCTRL, EXYNOS_CIGCTRL_SWRST);
157
158 /* reset sequence */
159 fimc_write(ctx, 0x0, EXYNOS_CIFCNTSEQ);
160 }
161
fimc_set_type_ctrl(struct fimc_context * ctx)162 static void fimc_set_type_ctrl(struct fimc_context *ctx)
163 {
164 u32 cfg;
165
166 cfg = fimc_read(ctx, EXYNOS_CIGCTRL);
167 cfg &= ~(EXYNOS_CIGCTRL_TESTPATTERN_MASK |
168 EXYNOS_CIGCTRL_SELCAM_ITU_MASK |
169 EXYNOS_CIGCTRL_SELCAM_MIPI_MASK |
170 EXYNOS_CIGCTRL_SELCAM_FIMC_MASK |
171 EXYNOS_CIGCTRL_SELWB_CAMIF_MASK |
172 EXYNOS_CIGCTRL_SELWRITEBACK_MASK);
173
174 cfg |= (EXYNOS_CIGCTRL_SELCAM_ITU_A |
175 EXYNOS_CIGCTRL_SELWRITEBACK_A |
176 EXYNOS_CIGCTRL_SELCAM_MIPI_A |
177 EXYNOS_CIGCTRL_SELCAM_FIMC_ITU);
178
179 fimc_write(ctx, cfg, EXYNOS_CIGCTRL);
180 }
181
fimc_handle_jpeg(struct fimc_context * ctx,bool enable)182 static void fimc_handle_jpeg(struct fimc_context *ctx, bool enable)
183 {
184 u32 cfg;
185
186 DRM_DEV_DEBUG_KMS(ctx->dev, "enable[%d]\n", enable);
187
188 cfg = fimc_read(ctx, EXYNOS_CIGCTRL);
189 if (enable)
190 cfg |= EXYNOS_CIGCTRL_CAM_JPEG;
191 else
192 cfg &= ~EXYNOS_CIGCTRL_CAM_JPEG;
193
194 fimc_write(ctx, cfg, EXYNOS_CIGCTRL);
195 }
196
fimc_mask_irq(struct fimc_context * ctx,bool enable)197 static void fimc_mask_irq(struct fimc_context *ctx, bool enable)
198 {
199 u32 cfg;
200
201 DRM_DEV_DEBUG_KMS(ctx->dev, "enable[%d]\n", enable);
202
203 cfg = fimc_read(ctx, EXYNOS_CIGCTRL);
204 if (enable) {
205 cfg &= ~EXYNOS_CIGCTRL_IRQ_OVFEN;
206 cfg |= EXYNOS_CIGCTRL_IRQ_ENABLE | EXYNOS_CIGCTRL_IRQ_LEVEL;
207 } else
208 cfg &= ~EXYNOS_CIGCTRL_IRQ_ENABLE;
209 fimc_write(ctx, cfg, EXYNOS_CIGCTRL);
210 }
211
fimc_clear_irq(struct fimc_context * ctx)212 static void fimc_clear_irq(struct fimc_context *ctx)
213 {
214 fimc_set_bits(ctx, EXYNOS_CIGCTRL, EXYNOS_CIGCTRL_IRQ_CLR);
215 }
216
fimc_check_ovf(struct fimc_context * ctx)217 static bool fimc_check_ovf(struct fimc_context *ctx)
218 {
219 u32 status, flag;
220
221 status = fimc_read(ctx, EXYNOS_CISTATUS);
222 flag = EXYNOS_CISTATUS_OVFIY | EXYNOS_CISTATUS_OVFICB |
223 EXYNOS_CISTATUS_OVFICR;
224
225 DRM_DEV_DEBUG_KMS(ctx->dev, "flag[0x%x]\n", flag);
226
227 if (status & flag) {
228 fimc_set_bits(ctx, EXYNOS_CIWDOFST,
229 EXYNOS_CIWDOFST_CLROVFIY | EXYNOS_CIWDOFST_CLROVFICB |
230 EXYNOS_CIWDOFST_CLROVFICR);
231
232 DRM_DEV_ERROR(ctx->dev,
233 "occurred overflow at %d, status 0x%x.\n",
234 ctx->id, status);
235 return true;
236 }
237
238 return false;
239 }
240
fimc_check_frame_end(struct fimc_context * ctx)241 static bool fimc_check_frame_end(struct fimc_context *ctx)
242 {
243 u32 cfg;
244
245 cfg = fimc_read(ctx, EXYNOS_CISTATUS);
246
247 DRM_DEV_DEBUG_KMS(ctx->dev, "cfg[0x%x]\n", cfg);
248
249 if (!(cfg & EXYNOS_CISTATUS_FRAMEEND))
250 return false;
251
252 cfg &= ~(EXYNOS_CISTATUS_FRAMEEND);
253 fimc_write(ctx, cfg, EXYNOS_CISTATUS);
254
255 return true;
256 }
257
fimc_get_buf_id(struct fimc_context * ctx)258 static int fimc_get_buf_id(struct fimc_context *ctx)
259 {
260 u32 cfg;
261 int frame_cnt, buf_id;
262
263 cfg = fimc_read(ctx, EXYNOS_CISTATUS2);
264 frame_cnt = EXYNOS_CISTATUS2_GET_FRAMECOUNT_BEFORE(cfg);
265
266 if (frame_cnt == 0)
267 frame_cnt = EXYNOS_CISTATUS2_GET_FRAMECOUNT_PRESENT(cfg);
268
269 DRM_DEV_DEBUG_KMS(ctx->dev, "present[%d]before[%d]\n",
270 EXYNOS_CISTATUS2_GET_FRAMECOUNT_PRESENT(cfg),
271 EXYNOS_CISTATUS2_GET_FRAMECOUNT_BEFORE(cfg));
272
273 if (frame_cnt == 0) {
274 DRM_DEV_ERROR(ctx->dev, "failed to get frame count.\n");
275 return -EIO;
276 }
277
278 buf_id = frame_cnt - 1;
279 DRM_DEV_DEBUG_KMS(ctx->dev, "buf_id[%d]\n", buf_id);
280
281 return buf_id;
282 }
283
fimc_handle_lastend(struct fimc_context * ctx,bool enable)284 static void fimc_handle_lastend(struct fimc_context *ctx, bool enable)
285 {
286 u32 cfg;
287
288 DRM_DEV_DEBUG_KMS(ctx->dev, "enable[%d]\n", enable);
289
290 cfg = fimc_read(ctx, EXYNOS_CIOCTRL);
291 if (enable)
292 cfg |= EXYNOS_CIOCTRL_LASTENDEN;
293 else
294 cfg &= ~EXYNOS_CIOCTRL_LASTENDEN;
295
296 fimc_write(ctx, cfg, EXYNOS_CIOCTRL);
297 }
298
fimc_src_set_fmt_order(struct fimc_context * ctx,u32 fmt)299 static void fimc_src_set_fmt_order(struct fimc_context *ctx, u32 fmt)
300 {
301 u32 cfg;
302
303 DRM_DEV_DEBUG_KMS(ctx->dev, "fmt[0x%x]\n", fmt);
304
305 /* RGB */
306 cfg = fimc_read(ctx, EXYNOS_CISCCTRL);
307 cfg &= ~EXYNOS_CISCCTRL_INRGB_FMT_RGB_MASK;
308
309 switch (fmt) {
310 case DRM_FORMAT_RGB565:
311 cfg |= EXYNOS_CISCCTRL_INRGB_FMT_RGB565;
312 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
313 return;
314 case DRM_FORMAT_RGB888:
315 case DRM_FORMAT_XRGB8888:
316 cfg |= EXYNOS_CISCCTRL_INRGB_FMT_RGB888;
317 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
318 return;
319 default:
320 /* bypass */
321 break;
322 }
323
324 /* YUV */
325 cfg = fimc_read(ctx, EXYNOS_MSCTRL);
326 cfg &= ~(EXYNOS_MSCTRL_ORDER2P_SHIFT_MASK |
327 EXYNOS_MSCTRL_C_INT_IN_2PLANE |
328 EXYNOS_MSCTRL_ORDER422_YCBYCR);
329
330 switch (fmt) {
331 case DRM_FORMAT_YUYV:
332 cfg |= EXYNOS_MSCTRL_ORDER422_YCBYCR;
333 break;
334 case DRM_FORMAT_YVYU:
335 cfg |= EXYNOS_MSCTRL_ORDER422_YCRYCB;
336 break;
337 case DRM_FORMAT_UYVY:
338 cfg |= EXYNOS_MSCTRL_ORDER422_CBYCRY;
339 break;
340 case DRM_FORMAT_VYUY:
341 case DRM_FORMAT_YUV444:
342 cfg |= EXYNOS_MSCTRL_ORDER422_CRYCBY;
343 break;
344 case DRM_FORMAT_NV21:
345 case DRM_FORMAT_NV61:
346 cfg |= (EXYNOS_MSCTRL_ORDER2P_LSB_CRCB |
347 EXYNOS_MSCTRL_C_INT_IN_2PLANE);
348 break;
349 case DRM_FORMAT_YUV422:
350 case DRM_FORMAT_YUV420:
351 case DRM_FORMAT_YVU420:
352 cfg |= EXYNOS_MSCTRL_C_INT_IN_3PLANE;
353 break;
354 case DRM_FORMAT_NV12:
355 case DRM_FORMAT_NV16:
356 cfg |= (EXYNOS_MSCTRL_ORDER2P_LSB_CBCR |
357 EXYNOS_MSCTRL_C_INT_IN_2PLANE);
358 break;
359 }
360
361 fimc_write(ctx, cfg, EXYNOS_MSCTRL);
362 }
363
fimc_src_set_fmt(struct fimc_context * ctx,u32 fmt,bool tiled)364 static void fimc_src_set_fmt(struct fimc_context *ctx, u32 fmt, bool tiled)
365 {
366 u32 cfg;
367
368 DRM_DEV_DEBUG_KMS(ctx->dev, "fmt[0x%x]\n", fmt);
369
370 cfg = fimc_read(ctx, EXYNOS_MSCTRL);
371 cfg &= ~EXYNOS_MSCTRL_INFORMAT_RGB;
372
373 switch (fmt) {
374 case DRM_FORMAT_RGB565:
375 case DRM_FORMAT_RGB888:
376 case DRM_FORMAT_XRGB8888:
377 cfg |= EXYNOS_MSCTRL_INFORMAT_RGB;
378 break;
379 case DRM_FORMAT_YUV444:
380 cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR420;
381 break;
382 case DRM_FORMAT_YUYV:
383 case DRM_FORMAT_YVYU:
384 case DRM_FORMAT_UYVY:
385 case DRM_FORMAT_VYUY:
386 cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR422_1PLANE;
387 break;
388 case DRM_FORMAT_NV16:
389 case DRM_FORMAT_NV61:
390 case DRM_FORMAT_YUV422:
391 cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR422;
392 break;
393 case DRM_FORMAT_YUV420:
394 case DRM_FORMAT_YVU420:
395 case DRM_FORMAT_NV12:
396 case DRM_FORMAT_NV21:
397 cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR420;
398 break;
399 }
400
401 fimc_write(ctx, cfg, EXYNOS_MSCTRL);
402
403 cfg = fimc_read(ctx, EXYNOS_CIDMAPARAM);
404 cfg &= ~EXYNOS_CIDMAPARAM_R_MODE_MASK;
405
406 if (tiled)
407 cfg |= EXYNOS_CIDMAPARAM_R_MODE_64X32;
408 else
409 cfg |= EXYNOS_CIDMAPARAM_R_MODE_LINEAR;
410
411 fimc_write(ctx, cfg, EXYNOS_CIDMAPARAM);
412
413 fimc_src_set_fmt_order(ctx, fmt);
414 }
415
fimc_src_set_transf(struct fimc_context * ctx,unsigned int rotation)416 static void fimc_src_set_transf(struct fimc_context *ctx, unsigned int rotation)
417 {
418 unsigned int degree = rotation & DRM_MODE_ROTATE_MASK;
419 u32 cfg1, cfg2;
420
421 DRM_DEV_DEBUG_KMS(ctx->dev, "rotation[%x]\n", rotation);
422
423 cfg1 = fimc_read(ctx, EXYNOS_MSCTRL);
424 cfg1 &= ~(EXYNOS_MSCTRL_FLIP_X_MIRROR |
425 EXYNOS_MSCTRL_FLIP_Y_MIRROR);
426
427 cfg2 = fimc_read(ctx, EXYNOS_CITRGFMT);
428 cfg2 &= ~EXYNOS_CITRGFMT_INROT90_CLOCKWISE;
429
430 switch (degree) {
431 case DRM_MODE_ROTATE_0:
432 if (rotation & DRM_MODE_REFLECT_X)
433 cfg1 |= EXYNOS_MSCTRL_FLIP_X_MIRROR;
434 if (rotation & DRM_MODE_REFLECT_Y)
435 cfg1 |= EXYNOS_MSCTRL_FLIP_Y_MIRROR;
436 break;
437 case DRM_MODE_ROTATE_90:
438 cfg2 |= EXYNOS_CITRGFMT_INROT90_CLOCKWISE;
439 if (rotation & DRM_MODE_REFLECT_X)
440 cfg1 |= EXYNOS_MSCTRL_FLIP_X_MIRROR;
441 if (rotation & DRM_MODE_REFLECT_Y)
442 cfg1 |= EXYNOS_MSCTRL_FLIP_Y_MIRROR;
443 break;
444 case DRM_MODE_ROTATE_180:
445 cfg1 |= (EXYNOS_MSCTRL_FLIP_X_MIRROR |
446 EXYNOS_MSCTRL_FLIP_Y_MIRROR);
447 if (rotation & DRM_MODE_REFLECT_X)
448 cfg1 &= ~EXYNOS_MSCTRL_FLIP_X_MIRROR;
449 if (rotation & DRM_MODE_REFLECT_Y)
450 cfg1 &= ~EXYNOS_MSCTRL_FLIP_Y_MIRROR;
451 break;
452 case DRM_MODE_ROTATE_270:
453 cfg1 |= (EXYNOS_MSCTRL_FLIP_X_MIRROR |
454 EXYNOS_MSCTRL_FLIP_Y_MIRROR);
455 cfg2 |= EXYNOS_CITRGFMT_INROT90_CLOCKWISE;
456 if (rotation & DRM_MODE_REFLECT_X)
457 cfg1 &= ~EXYNOS_MSCTRL_FLIP_X_MIRROR;
458 if (rotation & DRM_MODE_REFLECT_Y)
459 cfg1 &= ~EXYNOS_MSCTRL_FLIP_Y_MIRROR;
460 break;
461 }
462
463 fimc_write(ctx, cfg1, EXYNOS_MSCTRL);
464 fimc_write(ctx, cfg2, EXYNOS_CITRGFMT);
465 }
466
fimc_set_window(struct fimc_context * ctx,struct exynos_drm_ipp_buffer * buf)467 static void fimc_set_window(struct fimc_context *ctx,
468 struct exynos_drm_ipp_buffer *buf)
469 {
470 unsigned int real_width = buf->buf.pitch[0] / buf->format->cpp[0];
471 u32 cfg, h1, h2, v1, v2;
472
473 /* cropped image */
474 h1 = buf->rect.x;
475 h2 = real_width - buf->rect.w - buf->rect.x;
476 v1 = buf->rect.y;
477 v2 = buf->buf.height - buf->rect.h - buf->rect.y;
478
479 DRM_DEV_DEBUG_KMS(ctx->dev, "x[%d]y[%d]w[%d]h[%d]hsize[%d]vsize[%d]\n",
480 buf->rect.x, buf->rect.y, buf->rect.w, buf->rect.h,
481 real_width, buf->buf.height);
482 DRM_DEV_DEBUG_KMS(ctx->dev, "h1[%d]h2[%d]v1[%d]v2[%d]\n", h1, h2, v1,
483 v2);
484
485 /*
486 * set window offset 1, 2 size
487 * check figure 43-21 in user manual
488 */
489 cfg = fimc_read(ctx, EXYNOS_CIWDOFST);
490 cfg &= ~(EXYNOS_CIWDOFST_WINHOROFST_MASK |
491 EXYNOS_CIWDOFST_WINVEROFST_MASK);
492 cfg |= (EXYNOS_CIWDOFST_WINHOROFST(h1) |
493 EXYNOS_CIWDOFST_WINVEROFST(v1));
494 cfg |= EXYNOS_CIWDOFST_WINOFSEN;
495 fimc_write(ctx, cfg, EXYNOS_CIWDOFST);
496
497 cfg = (EXYNOS_CIWDOFST2_WINHOROFST2(h2) |
498 EXYNOS_CIWDOFST2_WINVEROFST2(v2));
499 fimc_write(ctx, cfg, EXYNOS_CIWDOFST2);
500 }
501
fimc_src_set_size(struct fimc_context * ctx,struct exynos_drm_ipp_buffer * buf)502 static void fimc_src_set_size(struct fimc_context *ctx,
503 struct exynos_drm_ipp_buffer *buf)
504 {
505 unsigned int real_width = buf->buf.pitch[0] / buf->format->cpp[0];
506 u32 cfg;
507
508 DRM_DEV_DEBUG_KMS(ctx->dev, "hsize[%d]vsize[%d]\n", real_width,
509 buf->buf.height);
510
511 /* original size */
512 cfg = (EXYNOS_ORGISIZE_HORIZONTAL(real_width) |
513 EXYNOS_ORGISIZE_VERTICAL(buf->buf.height));
514
515 fimc_write(ctx, cfg, EXYNOS_ORGISIZE);
516
517 DRM_DEV_DEBUG_KMS(ctx->dev, "x[%d]y[%d]w[%d]h[%d]\n", buf->rect.x,
518 buf->rect.y, buf->rect.w, buf->rect.h);
519
520 /* set input DMA image size */
521 cfg = fimc_read(ctx, EXYNOS_CIREAL_ISIZE);
522 cfg &= ~(EXYNOS_CIREAL_ISIZE_HEIGHT_MASK |
523 EXYNOS_CIREAL_ISIZE_WIDTH_MASK);
524 cfg |= (EXYNOS_CIREAL_ISIZE_WIDTH(buf->rect.w) |
525 EXYNOS_CIREAL_ISIZE_HEIGHT(buf->rect.h));
526 fimc_write(ctx, cfg, EXYNOS_CIREAL_ISIZE);
527
528 /*
529 * set input FIFO image size
530 * for now, we support only ITU601 8 bit mode
531 */
532 cfg = (EXYNOS_CISRCFMT_ITU601_8BIT |
533 EXYNOS_CISRCFMT_SOURCEHSIZE(real_width) |
534 EXYNOS_CISRCFMT_SOURCEVSIZE(buf->buf.height));
535 fimc_write(ctx, cfg, EXYNOS_CISRCFMT);
536
537 /* offset Y(RGB), Cb, Cr */
538 cfg = (EXYNOS_CIIYOFF_HORIZONTAL(buf->rect.x) |
539 EXYNOS_CIIYOFF_VERTICAL(buf->rect.y));
540 fimc_write(ctx, cfg, EXYNOS_CIIYOFF);
541 cfg = (EXYNOS_CIICBOFF_HORIZONTAL(buf->rect.x) |
542 EXYNOS_CIICBOFF_VERTICAL(buf->rect.y));
543 fimc_write(ctx, cfg, EXYNOS_CIICBOFF);
544 cfg = (EXYNOS_CIICROFF_HORIZONTAL(buf->rect.x) |
545 EXYNOS_CIICROFF_VERTICAL(buf->rect.y));
546 fimc_write(ctx, cfg, EXYNOS_CIICROFF);
547
548 fimc_set_window(ctx, buf);
549 }
550
fimc_src_set_addr(struct fimc_context * ctx,struct exynos_drm_ipp_buffer * buf)551 static void fimc_src_set_addr(struct fimc_context *ctx,
552 struct exynos_drm_ipp_buffer *buf)
553 {
554 fimc_write(ctx, buf->dma_addr[0], EXYNOS_CIIYSA(0));
555 fimc_write(ctx, buf->dma_addr[1], EXYNOS_CIICBSA(0));
556 fimc_write(ctx, buf->dma_addr[2], EXYNOS_CIICRSA(0));
557 }
558
fimc_dst_set_fmt_order(struct fimc_context * ctx,u32 fmt)559 static void fimc_dst_set_fmt_order(struct fimc_context *ctx, u32 fmt)
560 {
561 u32 cfg;
562
563 DRM_DEV_DEBUG_KMS(ctx->dev, "fmt[0x%x]\n", fmt);
564
565 /* RGB */
566 cfg = fimc_read(ctx, EXYNOS_CISCCTRL);
567 cfg &= ~EXYNOS_CISCCTRL_OUTRGB_FMT_RGB_MASK;
568
569 switch (fmt) {
570 case DRM_FORMAT_RGB565:
571 cfg |= EXYNOS_CISCCTRL_OUTRGB_FMT_RGB565;
572 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
573 return;
574 case DRM_FORMAT_RGB888:
575 cfg |= EXYNOS_CISCCTRL_OUTRGB_FMT_RGB888;
576 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
577 return;
578 case DRM_FORMAT_XRGB8888:
579 cfg |= (EXYNOS_CISCCTRL_OUTRGB_FMT_RGB888 |
580 EXYNOS_CISCCTRL_EXTRGB_EXTENSION);
581 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
582 break;
583 default:
584 /* bypass */
585 break;
586 }
587
588 /* YUV */
589 cfg = fimc_read(ctx, EXYNOS_CIOCTRL);
590 cfg &= ~(EXYNOS_CIOCTRL_ORDER2P_MASK |
591 EXYNOS_CIOCTRL_ORDER422_MASK |
592 EXYNOS_CIOCTRL_YCBCR_PLANE_MASK);
593
594 switch (fmt) {
595 case DRM_FORMAT_XRGB8888:
596 cfg |= EXYNOS_CIOCTRL_ALPHA_OUT;
597 break;
598 case DRM_FORMAT_YUYV:
599 cfg |= EXYNOS_CIOCTRL_ORDER422_YCBYCR;
600 break;
601 case DRM_FORMAT_YVYU:
602 cfg |= EXYNOS_CIOCTRL_ORDER422_YCRYCB;
603 break;
604 case DRM_FORMAT_UYVY:
605 cfg |= EXYNOS_CIOCTRL_ORDER422_CBYCRY;
606 break;
607 case DRM_FORMAT_VYUY:
608 cfg |= EXYNOS_CIOCTRL_ORDER422_CRYCBY;
609 break;
610 case DRM_FORMAT_NV21:
611 case DRM_FORMAT_NV61:
612 cfg |= EXYNOS_CIOCTRL_ORDER2P_LSB_CRCB;
613 cfg |= EXYNOS_CIOCTRL_YCBCR_2PLANE;
614 break;
615 case DRM_FORMAT_YUV422:
616 case DRM_FORMAT_YUV420:
617 case DRM_FORMAT_YVU420:
618 cfg |= EXYNOS_CIOCTRL_YCBCR_3PLANE;
619 break;
620 case DRM_FORMAT_NV12:
621 case DRM_FORMAT_NV16:
622 cfg |= EXYNOS_CIOCTRL_ORDER2P_LSB_CBCR;
623 cfg |= EXYNOS_CIOCTRL_YCBCR_2PLANE;
624 break;
625 }
626
627 fimc_write(ctx, cfg, EXYNOS_CIOCTRL);
628 }
629
fimc_dst_set_fmt(struct fimc_context * ctx,u32 fmt,bool tiled)630 static void fimc_dst_set_fmt(struct fimc_context *ctx, u32 fmt, bool tiled)
631 {
632 u32 cfg;
633
634 DRM_DEV_DEBUG_KMS(ctx->dev, "fmt[0x%x]\n", fmt);
635
636 cfg = fimc_read(ctx, EXYNOS_CIEXTEN);
637
638 if (fmt == DRM_FORMAT_AYUV) {
639 cfg |= EXYNOS_CIEXTEN_YUV444_OUT;
640 fimc_write(ctx, cfg, EXYNOS_CIEXTEN);
641 } else {
642 cfg &= ~EXYNOS_CIEXTEN_YUV444_OUT;
643 fimc_write(ctx, cfg, EXYNOS_CIEXTEN);
644
645 cfg = fimc_read(ctx, EXYNOS_CITRGFMT);
646 cfg &= ~EXYNOS_CITRGFMT_OUTFORMAT_MASK;
647
648 switch (fmt) {
649 case DRM_FORMAT_RGB565:
650 case DRM_FORMAT_RGB888:
651 case DRM_FORMAT_XRGB8888:
652 cfg |= EXYNOS_CITRGFMT_OUTFORMAT_RGB;
653 break;
654 case DRM_FORMAT_YUYV:
655 case DRM_FORMAT_YVYU:
656 case DRM_FORMAT_UYVY:
657 case DRM_FORMAT_VYUY:
658 cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR422_1PLANE;
659 break;
660 case DRM_FORMAT_NV16:
661 case DRM_FORMAT_NV61:
662 case DRM_FORMAT_YUV422:
663 cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR422;
664 break;
665 case DRM_FORMAT_YUV420:
666 case DRM_FORMAT_YVU420:
667 case DRM_FORMAT_NV12:
668 case DRM_FORMAT_NV21:
669 cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR420;
670 break;
671 }
672
673 fimc_write(ctx, cfg, EXYNOS_CITRGFMT);
674 }
675
676 cfg = fimc_read(ctx, EXYNOS_CIDMAPARAM);
677 cfg &= ~EXYNOS_CIDMAPARAM_W_MODE_MASK;
678
679 if (tiled)
680 cfg |= EXYNOS_CIDMAPARAM_W_MODE_64X32;
681 else
682 cfg |= EXYNOS_CIDMAPARAM_W_MODE_LINEAR;
683
684 fimc_write(ctx, cfg, EXYNOS_CIDMAPARAM);
685
686 fimc_dst_set_fmt_order(ctx, fmt);
687 }
688
fimc_dst_set_transf(struct fimc_context * ctx,unsigned int rotation)689 static void fimc_dst_set_transf(struct fimc_context *ctx, unsigned int rotation)
690 {
691 unsigned int degree = rotation & DRM_MODE_ROTATE_MASK;
692 u32 cfg;
693
694 DRM_DEV_DEBUG_KMS(ctx->dev, "rotation[0x%x]\n", rotation);
695
696 cfg = fimc_read(ctx, EXYNOS_CITRGFMT);
697 cfg &= ~EXYNOS_CITRGFMT_FLIP_MASK;
698 cfg &= ~EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE;
699
700 switch (degree) {
701 case DRM_MODE_ROTATE_0:
702 if (rotation & DRM_MODE_REFLECT_X)
703 cfg |= EXYNOS_CITRGFMT_FLIP_X_MIRROR;
704 if (rotation & DRM_MODE_REFLECT_Y)
705 cfg |= EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
706 break;
707 case DRM_MODE_ROTATE_90:
708 cfg |= EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE;
709 if (rotation & DRM_MODE_REFLECT_X)
710 cfg |= EXYNOS_CITRGFMT_FLIP_X_MIRROR;
711 if (rotation & DRM_MODE_REFLECT_Y)
712 cfg |= EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
713 break;
714 case DRM_MODE_ROTATE_180:
715 cfg |= (EXYNOS_CITRGFMT_FLIP_X_MIRROR |
716 EXYNOS_CITRGFMT_FLIP_Y_MIRROR);
717 if (rotation & DRM_MODE_REFLECT_X)
718 cfg &= ~EXYNOS_CITRGFMT_FLIP_X_MIRROR;
719 if (rotation & DRM_MODE_REFLECT_Y)
720 cfg &= ~EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
721 break;
722 case DRM_MODE_ROTATE_270:
723 cfg |= (EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE |
724 EXYNOS_CITRGFMT_FLIP_X_MIRROR |
725 EXYNOS_CITRGFMT_FLIP_Y_MIRROR);
726 if (rotation & DRM_MODE_REFLECT_X)
727 cfg &= ~EXYNOS_CITRGFMT_FLIP_X_MIRROR;
728 if (rotation & DRM_MODE_REFLECT_Y)
729 cfg &= ~EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
730 break;
731 }
732
733 fimc_write(ctx, cfg, EXYNOS_CITRGFMT);
734 }
735
fimc_set_prescaler(struct fimc_context * ctx,struct fimc_scaler * sc,struct drm_exynos_ipp_task_rect * src,struct drm_exynos_ipp_task_rect * dst)736 static int fimc_set_prescaler(struct fimc_context *ctx, struct fimc_scaler *sc,
737 struct drm_exynos_ipp_task_rect *src,
738 struct drm_exynos_ipp_task_rect *dst)
739 {
740 u32 cfg, cfg_ext, shfactor;
741 u32 pre_dst_width, pre_dst_height;
742 u32 hfactor, vfactor;
743 int ret = 0;
744 u32 src_w, src_h, dst_w, dst_h;
745
746 cfg_ext = fimc_read(ctx, EXYNOS_CITRGFMT);
747 if (cfg_ext & EXYNOS_CITRGFMT_INROT90_CLOCKWISE) {
748 src_w = src->h;
749 src_h = src->w;
750 } else {
751 src_w = src->w;
752 src_h = src->h;
753 }
754
755 if (cfg_ext & EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE) {
756 dst_w = dst->h;
757 dst_h = dst->w;
758 } else {
759 dst_w = dst->w;
760 dst_h = dst->h;
761 }
762
763 /* fimc_ippdrv_check_property assures that dividers are not null */
764 hfactor = fls(src_w / dst_w / 2);
765 if (hfactor > FIMC_SHFACTOR / 2) {
766 dev_err(ctx->dev, "failed to get ratio horizontal.\n");
767 return -EINVAL;
768 }
769
770 vfactor = fls(src_h / dst_h / 2);
771 if (vfactor > FIMC_SHFACTOR / 2) {
772 dev_err(ctx->dev, "failed to get ratio vertical.\n");
773 return -EINVAL;
774 }
775
776 pre_dst_width = src_w >> hfactor;
777 pre_dst_height = src_h >> vfactor;
778 DRM_DEV_DEBUG_KMS(ctx->dev, "pre_dst_width[%d]pre_dst_height[%d]\n",
779 pre_dst_width, pre_dst_height);
780 DRM_DEV_DEBUG_KMS(ctx->dev, "hfactor[%d]vfactor[%d]\n", hfactor,
781 vfactor);
782
783 sc->hratio = (src_w << 14) / (dst_w << hfactor);
784 sc->vratio = (src_h << 14) / (dst_h << vfactor);
785 sc->up_h = (dst_w >= src_w);
786 sc->up_v = (dst_h >= src_h);
787 DRM_DEV_DEBUG_KMS(ctx->dev, "hratio[%d]vratio[%d]up_h[%d]up_v[%d]\n",
788 sc->hratio, sc->vratio, sc->up_h, sc->up_v);
789
790 shfactor = FIMC_SHFACTOR - (hfactor + vfactor);
791 DRM_DEV_DEBUG_KMS(ctx->dev, "shfactor[%d]\n", shfactor);
792
793 cfg = (EXYNOS_CISCPRERATIO_SHFACTOR(shfactor) |
794 EXYNOS_CISCPRERATIO_PREHORRATIO(1 << hfactor) |
795 EXYNOS_CISCPRERATIO_PREVERRATIO(1 << vfactor));
796 fimc_write(ctx, cfg, EXYNOS_CISCPRERATIO);
797
798 cfg = (EXYNOS_CISCPREDST_PREDSTWIDTH(pre_dst_width) |
799 EXYNOS_CISCPREDST_PREDSTHEIGHT(pre_dst_height));
800 fimc_write(ctx, cfg, EXYNOS_CISCPREDST);
801
802 return ret;
803 }
804
fimc_set_scaler(struct fimc_context * ctx,struct fimc_scaler * sc)805 static void fimc_set_scaler(struct fimc_context *ctx, struct fimc_scaler *sc)
806 {
807 u32 cfg, cfg_ext;
808
809 DRM_DEV_DEBUG_KMS(ctx->dev, "range[%d]bypass[%d]up_h[%d]up_v[%d]\n",
810 sc->range, sc->bypass, sc->up_h, sc->up_v);
811 DRM_DEV_DEBUG_KMS(ctx->dev, "hratio[%d]vratio[%d]\n",
812 sc->hratio, sc->vratio);
813
814 cfg = fimc_read(ctx, EXYNOS_CISCCTRL);
815 cfg &= ~(EXYNOS_CISCCTRL_SCALERBYPASS |
816 EXYNOS_CISCCTRL_SCALEUP_H | EXYNOS_CISCCTRL_SCALEUP_V |
817 EXYNOS_CISCCTRL_MAIN_V_RATIO_MASK |
818 EXYNOS_CISCCTRL_MAIN_H_RATIO_MASK |
819 EXYNOS_CISCCTRL_CSCR2Y_WIDE |
820 EXYNOS_CISCCTRL_CSCY2R_WIDE);
821
822 if (sc->range)
823 cfg |= (EXYNOS_CISCCTRL_CSCR2Y_WIDE |
824 EXYNOS_CISCCTRL_CSCY2R_WIDE);
825 if (sc->bypass)
826 cfg |= EXYNOS_CISCCTRL_SCALERBYPASS;
827 if (sc->up_h)
828 cfg |= EXYNOS_CISCCTRL_SCALEUP_H;
829 if (sc->up_v)
830 cfg |= EXYNOS_CISCCTRL_SCALEUP_V;
831
832 cfg |= (EXYNOS_CISCCTRL_MAINHORRATIO((sc->hratio >> 6)) |
833 EXYNOS_CISCCTRL_MAINVERRATIO((sc->vratio >> 6)));
834 fimc_write(ctx, cfg, EXYNOS_CISCCTRL);
835
836 cfg_ext = fimc_read(ctx, EXYNOS_CIEXTEN);
837 cfg_ext &= ~EXYNOS_CIEXTEN_MAINHORRATIO_EXT_MASK;
838 cfg_ext &= ~EXYNOS_CIEXTEN_MAINVERRATIO_EXT_MASK;
839 cfg_ext |= (EXYNOS_CIEXTEN_MAINHORRATIO_EXT(sc->hratio) |
840 EXYNOS_CIEXTEN_MAINVERRATIO_EXT(sc->vratio));
841 fimc_write(ctx, cfg_ext, EXYNOS_CIEXTEN);
842 }
843
fimc_dst_set_size(struct fimc_context * ctx,struct exynos_drm_ipp_buffer * buf)844 static void fimc_dst_set_size(struct fimc_context *ctx,
845 struct exynos_drm_ipp_buffer *buf)
846 {
847 unsigned int real_width = buf->buf.pitch[0] / buf->format->cpp[0];
848 u32 cfg, cfg_ext;
849
850 DRM_DEV_DEBUG_KMS(ctx->dev, "hsize[%d]vsize[%d]\n", real_width,
851 buf->buf.height);
852
853 /* original size */
854 cfg = (EXYNOS_ORGOSIZE_HORIZONTAL(real_width) |
855 EXYNOS_ORGOSIZE_VERTICAL(buf->buf.height));
856
857 fimc_write(ctx, cfg, EXYNOS_ORGOSIZE);
858
859 DRM_DEV_DEBUG_KMS(ctx->dev, "x[%d]y[%d]w[%d]h[%d]\n", buf->rect.x,
860 buf->rect.y,
861 buf->rect.w, buf->rect.h);
862
863 /* CSC ITU */
864 cfg = fimc_read(ctx, EXYNOS_CIGCTRL);
865 cfg &= ~EXYNOS_CIGCTRL_CSC_MASK;
866
867 if (buf->buf.width >= FIMC_WIDTH_ITU_709)
868 cfg |= EXYNOS_CIGCTRL_CSC_ITU709;
869 else
870 cfg |= EXYNOS_CIGCTRL_CSC_ITU601;
871
872 fimc_write(ctx, cfg, EXYNOS_CIGCTRL);
873
874 cfg_ext = fimc_read(ctx, EXYNOS_CITRGFMT);
875
876 /* target image size */
877 cfg = fimc_read(ctx, EXYNOS_CITRGFMT);
878 cfg &= ~(EXYNOS_CITRGFMT_TARGETH_MASK |
879 EXYNOS_CITRGFMT_TARGETV_MASK);
880 if (cfg_ext & EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE)
881 cfg |= (EXYNOS_CITRGFMT_TARGETHSIZE(buf->rect.h) |
882 EXYNOS_CITRGFMT_TARGETVSIZE(buf->rect.w));
883 else
884 cfg |= (EXYNOS_CITRGFMT_TARGETHSIZE(buf->rect.w) |
885 EXYNOS_CITRGFMT_TARGETVSIZE(buf->rect.h));
886 fimc_write(ctx, cfg, EXYNOS_CITRGFMT);
887
888 /* target area */
889 cfg = EXYNOS_CITAREA_TARGET_AREA(buf->rect.w * buf->rect.h);
890 fimc_write(ctx, cfg, EXYNOS_CITAREA);
891
892 /* offset Y(RGB), Cb, Cr */
893 cfg = (EXYNOS_CIOYOFF_HORIZONTAL(buf->rect.x) |
894 EXYNOS_CIOYOFF_VERTICAL(buf->rect.y));
895 fimc_write(ctx, cfg, EXYNOS_CIOYOFF);
896 cfg = (EXYNOS_CIOCBOFF_HORIZONTAL(buf->rect.x) |
897 EXYNOS_CIOCBOFF_VERTICAL(buf->rect.y));
898 fimc_write(ctx, cfg, EXYNOS_CIOCBOFF);
899 cfg = (EXYNOS_CIOCROFF_HORIZONTAL(buf->rect.x) |
900 EXYNOS_CIOCROFF_VERTICAL(buf->rect.y));
901 fimc_write(ctx, cfg, EXYNOS_CIOCROFF);
902 }
903
fimc_dst_set_buf_seq(struct fimc_context * ctx,u32 buf_id,bool enqueue)904 static void fimc_dst_set_buf_seq(struct fimc_context *ctx, u32 buf_id,
905 bool enqueue)
906 {
907 unsigned long flags;
908 u32 buf_num;
909 u32 cfg;
910
911 DRM_DEV_DEBUG_KMS(ctx->dev, "buf_id[%d]enqueu[%d]\n", buf_id, enqueue);
912
913 spin_lock_irqsave(&ctx->lock, flags);
914
915 cfg = fimc_read(ctx, EXYNOS_CIFCNTSEQ);
916
917 if (enqueue)
918 cfg |= (1 << buf_id);
919 else
920 cfg &= ~(1 << buf_id);
921
922 fimc_write(ctx, cfg, EXYNOS_CIFCNTSEQ);
923
924 buf_num = hweight32(cfg);
925
926 if (enqueue && buf_num >= FIMC_BUF_START)
927 fimc_mask_irq(ctx, true);
928 else if (!enqueue && buf_num <= FIMC_BUF_STOP)
929 fimc_mask_irq(ctx, false);
930
931 spin_unlock_irqrestore(&ctx->lock, flags);
932 }
933
fimc_dst_set_addr(struct fimc_context * ctx,struct exynos_drm_ipp_buffer * buf)934 static void fimc_dst_set_addr(struct fimc_context *ctx,
935 struct exynos_drm_ipp_buffer *buf)
936 {
937 fimc_write(ctx, buf->dma_addr[0], EXYNOS_CIOYSA(0));
938 fimc_write(ctx, buf->dma_addr[1], EXYNOS_CIOCBSA(0));
939 fimc_write(ctx, buf->dma_addr[2], EXYNOS_CIOCRSA(0));
940
941 fimc_dst_set_buf_seq(ctx, 0, true);
942 }
943
944 static void fimc_stop(struct fimc_context *ctx);
945
fimc_irq_handler(int irq,void * dev_id)946 static irqreturn_t fimc_irq_handler(int irq, void *dev_id)
947 {
948 struct fimc_context *ctx = dev_id;
949 int buf_id;
950
951 DRM_DEV_DEBUG_KMS(ctx->dev, "fimc id[%d]\n", ctx->id);
952
953 fimc_clear_irq(ctx);
954 if (fimc_check_ovf(ctx))
955 return IRQ_NONE;
956
957 if (!fimc_check_frame_end(ctx))
958 return IRQ_NONE;
959
960 buf_id = fimc_get_buf_id(ctx);
961 if (buf_id < 0)
962 return IRQ_HANDLED;
963
964 DRM_DEV_DEBUG_KMS(ctx->dev, "buf_id[%d]\n", buf_id);
965
966 if (ctx->task) {
967 struct exynos_drm_ipp_task *task = ctx->task;
968
969 ctx->task = NULL;
970 pm_runtime_mark_last_busy(ctx->dev);
971 pm_runtime_put_autosuspend(ctx->dev);
972 exynos_drm_ipp_task_done(task, 0);
973 }
974
975 fimc_dst_set_buf_seq(ctx, buf_id, false);
976 fimc_stop(ctx);
977
978 return IRQ_HANDLED;
979 }
980
fimc_clear_addr(struct fimc_context * ctx)981 static void fimc_clear_addr(struct fimc_context *ctx)
982 {
983 int i;
984
985 for (i = 0; i < FIMC_MAX_SRC; i++) {
986 fimc_write(ctx, 0, EXYNOS_CIIYSA(i));
987 fimc_write(ctx, 0, EXYNOS_CIICBSA(i));
988 fimc_write(ctx, 0, EXYNOS_CIICRSA(i));
989 }
990
991 for (i = 0; i < FIMC_MAX_DST; i++) {
992 fimc_write(ctx, 0, EXYNOS_CIOYSA(i));
993 fimc_write(ctx, 0, EXYNOS_CIOCBSA(i));
994 fimc_write(ctx, 0, EXYNOS_CIOCRSA(i));
995 }
996 }
997
fimc_reset(struct fimc_context * ctx)998 static void fimc_reset(struct fimc_context *ctx)
999 {
1000 /* reset h/w block */
1001 fimc_sw_reset(ctx);
1002
1003 /* reset scaler capability */
1004 memset(&ctx->sc, 0x0, sizeof(ctx->sc));
1005
1006 fimc_clear_addr(ctx);
1007 }
1008
fimc_start(struct fimc_context * ctx)1009 static void fimc_start(struct fimc_context *ctx)
1010 {
1011 u32 cfg0, cfg1;
1012
1013 fimc_mask_irq(ctx, true);
1014
1015 /* If set true, we can save jpeg about screen */
1016 fimc_handle_jpeg(ctx, false);
1017 fimc_set_scaler(ctx, &ctx->sc);
1018
1019 fimc_set_type_ctrl(ctx);
1020 fimc_handle_lastend(ctx, false);
1021
1022 /* setup dma */
1023 cfg0 = fimc_read(ctx, EXYNOS_MSCTRL);
1024 cfg0 &= ~EXYNOS_MSCTRL_INPUT_MASK;
1025 cfg0 |= EXYNOS_MSCTRL_INPUT_MEMORY;
1026 fimc_write(ctx, cfg0, EXYNOS_MSCTRL);
1027
1028 /* Reset status */
1029 fimc_write(ctx, 0x0, EXYNOS_CISTATUS);
1030
1031 cfg0 = fimc_read(ctx, EXYNOS_CIIMGCPT);
1032 cfg0 &= ~EXYNOS_CIIMGCPT_IMGCPTEN_SC;
1033 cfg0 |= EXYNOS_CIIMGCPT_IMGCPTEN_SC;
1034
1035 /* Scaler */
1036 cfg1 = fimc_read(ctx, EXYNOS_CISCCTRL);
1037 cfg1 &= ~EXYNOS_CISCCTRL_SCAN_MASK;
1038 cfg1 |= (EXYNOS_CISCCTRL_PROGRESSIVE |
1039 EXYNOS_CISCCTRL_SCALERSTART);
1040
1041 fimc_write(ctx, cfg1, EXYNOS_CISCCTRL);
1042
1043 /* Enable image capture*/
1044 cfg0 |= EXYNOS_CIIMGCPT_IMGCPTEN;
1045 fimc_write(ctx, cfg0, EXYNOS_CIIMGCPT);
1046
1047 /* Disable frame end irq */
1048 fimc_clear_bits(ctx, EXYNOS_CIGCTRL, EXYNOS_CIGCTRL_IRQ_END_DISABLE);
1049
1050 fimc_clear_bits(ctx, EXYNOS_CIOCTRL, EXYNOS_CIOCTRL_WEAVE_MASK);
1051
1052 fimc_set_bits(ctx, EXYNOS_MSCTRL, EXYNOS_MSCTRL_ENVID);
1053 }
1054
fimc_stop(struct fimc_context * ctx)1055 static void fimc_stop(struct fimc_context *ctx)
1056 {
1057 u32 cfg;
1058
1059 /* Source clear */
1060 cfg = fimc_read(ctx, EXYNOS_MSCTRL);
1061 cfg &= ~EXYNOS_MSCTRL_INPUT_MASK;
1062 cfg &= ~EXYNOS_MSCTRL_ENVID;
1063 fimc_write(ctx, cfg, EXYNOS_MSCTRL);
1064
1065 fimc_mask_irq(ctx, false);
1066
1067 /* reset sequence */
1068 fimc_write(ctx, 0x0, EXYNOS_CIFCNTSEQ);
1069
1070 /* Scaler disable */
1071 fimc_clear_bits(ctx, EXYNOS_CISCCTRL, EXYNOS_CISCCTRL_SCALERSTART);
1072
1073 /* Disable image capture */
1074 fimc_clear_bits(ctx, EXYNOS_CIIMGCPT,
1075 EXYNOS_CIIMGCPT_IMGCPTEN_SC | EXYNOS_CIIMGCPT_IMGCPTEN);
1076
1077 /* Enable frame end irq */
1078 fimc_set_bits(ctx, EXYNOS_CIGCTRL, EXYNOS_CIGCTRL_IRQ_END_DISABLE);
1079 }
1080
fimc_commit(struct exynos_drm_ipp * ipp,struct exynos_drm_ipp_task * task)1081 static int fimc_commit(struct exynos_drm_ipp *ipp,
1082 struct exynos_drm_ipp_task *task)
1083 {
1084 struct fimc_context *ctx =
1085 container_of(ipp, struct fimc_context, ipp);
1086 int ret;
1087
1088 ret = pm_runtime_resume_and_get(ctx->dev);
1089 if (ret < 0) {
1090 dev_err(ctx->dev, "failed to enable FIMC device.\n");
1091 return ret;
1092 }
1093
1094 ctx->task = task;
1095
1096 fimc_src_set_fmt(ctx, task->src.buf.fourcc, task->src.buf.modifier);
1097 fimc_src_set_size(ctx, &task->src);
1098 fimc_src_set_transf(ctx, DRM_MODE_ROTATE_0);
1099 fimc_src_set_addr(ctx, &task->src);
1100 fimc_dst_set_fmt(ctx, task->dst.buf.fourcc, task->dst.buf.modifier);
1101 fimc_dst_set_transf(ctx, task->transform.rotation);
1102 fimc_dst_set_size(ctx, &task->dst);
1103 fimc_dst_set_addr(ctx, &task->dst);
1104 fimc_set_prescaler(ctx, &ctx->sc, &task->src.rect, &task->dst.rect);
1105 fimc_start(ctx);
1106
1107 return 0;
1108 }
1109
fimc_abort(struct exynos_drm_ipp * ipp,struct exynos_drm_ipp_task * task)1110 static void fimc_abort(struct exynos_drm_ipp *ipp,
1111 struct exynos_drm_ipp_task *task)
1112 {
1113 struct fimc_context *ctx =
1114 container_of(ipp, struct fimc_context, ipp);
1115
1116 fimc_reset(ctx);
1117
1118 if (ctx->task) {
1119 struct exynos_drm_ipp_task *task = ctx->task;
1120
1121 ctx->task = NULL;
1122 pm_runtime_mark_last_busy(ctx->dev);
1123 pm_runtime_put_autosuspend(ctx->dev);
1124 exynos_drm_ipp_task_done(task, -EIO);
1125 }
1126 }
1127
1128 static struct exynos_drm_ipp_funcs ipp_funcs = {
1129 .commit = fimc_commit,
1130 .abort = fimc_abort,
1131 };
1132
fimc_bind(struct device * dev,struct device * master,void * data)1133 static int fimc_bind(struct device *dev, struct device *master, void *data)
1134 {
1135 struct fimc_context *ctx = dev_get_drvdata(dev);
1136 struct drm_device *drm_dev = data;
1137 struct exynos_drm_ipp *ipp = &ctx->ipp;
1138
1139 ctx->drm_dev = drm_dev;
1140 ipp->drm_dev = drm_dev;
1141 exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv);
1142
1143 exynos_drm_ipp_register(dev, ipp, &ipp_funcs,
1144 DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE |
1145 DRM_EXYNOS_IPP_CAP_SCALE | DRM_EXYNOS_IPP_CAP_CONVERT,
1146 ctx->formats, ctx->num_formats, "fimc");
1147
1148 dev_info(dev, "The exynos fimc has been probed successfully\n");
1149
1150 return 0;
1151 }
1152
fimc_unbind(struct device * dev,struct device * master,void * data)1153 static void fimc_unbind(struct device *dev, struct device *master,
1154 void *data)
1155 {
1156 struct fimc_context *ctx = dev_get_drvdata(dev);
1157 struct drm_device *drm_dev = data;
1158 struct exynos_drm_ipp *ipp = &ctx->ipp;
1159
1160 exynos_drm_ipp_unregister(dev, ipp);
1161 exynos_drm_unregister_dma(drm_dev, dev, &ctx->dma_priv);
1162 }
1163
1164 static const struct component_ops fimc_component_ops = {
1165 .bind = fimc_bind,
1166 .unbind = fimc_unbind,
1167 };
1168
fimc_put_clocks(struct fimc_context * ctx)1169 static void fimc_put_clocks(struct fimc_context *ctx)
1170 {
1171 int i;
1172
1173 for (i = 0; i < FIMC_CLKS_MAX; i++) {
1174 if (IS_ERR(ctx->clocks[i]))
1175 continue;
1176 clk_put(ctx->clocks[i]);
1177 ctx->clocks[i] = ERR_PTR(-EINVAL);
1178 }
1179 }
1180
fimc_setup_clocks(struct fimc_context * ctx)1181 static int fimc_setup_clocks(struct fimc_context *ctx)
1182 {
1183 struct device *fimc_dev = ctx->dev;
1184 struct device *dev;
1185 int ret, i;
1186
1187 for (i = 0; i < FIMC_CLKS_MAX; i++)
1188 ctx->clocks[i] = ERR_PTR(-EINVAL);
1189
1190 for (i = 0; i < FIMC_CLKS_MAX; i++) {
1191 if (i == FIMC_CLK_WB_A || i == FIMC_CLK_WB_B)
1192 dev = fimc_dev->parent;
1193 else
1194 dev = fimc_dev;
1195
1196 ctx->clocks[i] = clk_get(dev, fimc_clock_names[i]);
1197 if (IS_ERR(ctx->clocks[i])) {
1198 ret = PTR_ERR(ctx->clocks[i]);
1199 dev_err(fimc_dev, "failed to get clock: %s\n",
1200 fimc_clock_names[i]);
1201 goto e_clk_free;
1202 }
1203 }
1204
1205 ret = clk_prepare_enable(ctx->clocks[FIMC_CLK_LCLK]);
1206 if (!ret)
1207 return ret;
1208 e_clk_free:
1209 fimc_put_clocks(ctx);
1210 return ret;
1211 }
1212
exynos_drm_check_fimc_device(struct device * dev)1213 int exynos_drm_check_fimc_device(struct device *dev)
1214 {
1215 int id = of_alias_get_id(dev->of_node, "fimc");
1216
1217 if (id >= 0 && (BIT(id) & fimc_mask))
1218 return 0;
1219 return -ENODEV;
1220 }
1221
1222 static const unsigned int fimc_formats[] = {
1223 DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB565,
1224 DRM_FORMAT_NV12, DRM_FORMAT_NV16, DRM_FORMAT_NV21, DRM_FORMAT_NV61,
1225 DRM_FORMAT_UYVY, DRM_FORMAT_VYUY, DRM_FORMAT_YUYV, DRM_FORMAT_YVYU,
1226 DRM_FORMAT_YUV420, DRM_FORMAT_YVU420, DRM_FORMAT_YUV422,
1227 DRM_FORMAT_YUV444,
1228 };
1229
1230 static const unsigned int fimc_tiled_formats[] = {
1231 DRM_FORMAT_NV12, DRM_FORMAT_NV21,
1232 };
1233
1234 static const struct drm_exynos_ipp_limit fimc_4210_limits_v1[] = {
1235 { IPP_SIZE_LIMIT(BUFFER, .h = { 16, 8192, 8 }, .v = { 16, 8192, 2 }) },
1236 { IPP_SIZE_LIMIT(AREA, .h = { 16, 4224, 2 }, .v = { 16, 0, 2 }) },
1237 { IPP_SIZE_LIMIT(ROTATED, .h = { 128, 1920 }, .v = { 128, 0 }) },
1238 { IPP_SCALE_LIMIT(.h = { (1 << 16) / 64, (1 << 16) * 64 },
1239 .v = { (1 << 16) / 64, (1 << 16) * 64 }) },
1240 };
1241
1242 static const struct drm_exynos_ipp_limit fimc_4210_limits_v2[] = {
1243 { IPP_SIZE_LIMIT(BUFFER, .h = { 16, 8192, 8 }, .v = { 16, 8192, 2 }) },
1244 { IPP_SIZE_LIMIT(AREA, .h = { 16, 1920, 2 }, .v = { 16, 0, 2 }) },
1245 { IPP_SIZE_LIMIT(ROTATED, .h = { 128, 1366 }, .v = { 128, 0 }) },
1246 { IPP_SCALE_LIMIT(.h = { (1 << 16) / 64, (1 << 16) * 64 },
1247 .v = { (1 << 16) / 64, (1 << 16) * 64 }) },
1248 };
1249
1250 static const struct drm_exynos_ipp_limit fimc_4210_limits_tiled_v1[] = {
1251 { IPP_SIZE_LIMIT(BUFFER, .h = { 128, 1920, 128 }, .v = { 32, 1920, 32 }) },
1252 { IPP_SIZE_LIMIT(AREA, .h = { 128, 1920, 2 }, .v = { 128, 0, 2 }) },
1253 { IPP_SCALE_LIMIT(.h = { (1 << 16) / 64, (1 << 16) * 64 },
1254 .v = { (1 << 16) / 64, (1 << 16) * 64 }) },
1255 };
1256
1257 static const struct drm_exynos_ipp_limit fimc_4210_limits_tiled_v2[] = {
1258 { IPP_SIZE_LIMIT(BUFFER, .h = { 128, 1920, 128 }, .v = { 32, 1920, 32 }) },
1259 { IPP_SIZE_LIMIT(AREA, .h = { 128, 1366, 2 }, .v = { 128, 0, 2 }) },
1260 { IPP_SCALE_LIMIT(.h = { (1 << 16) / 64, (1 << 16) * 64 },
1261 .v = { (1 << 16) / 64, (1 << 16) * 64 }) },
1262 };
1263
fimc_probe(struct platform_device * pdev)1264 static int fimc_probe(struct platform_device *pdev)
1265 {
1266 const struct drm_exynos_ipp_limit *limits;
1267 struct exynos_drm_ipp_formats *formats;
1268 struct device *dev = &pdev->dev;
1269 struct fimc_context *ctx;
1270 int ret;
1271 int i, j, num_limits, num_formats;
1272
1273 if (exynos_drm_check_fimc_device(dev) != 0)
1274 return -ENODEV;
1275
1276 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
1277 if (!ctx)
1278 return -ENOMEM;
1279
1280 ctx->dev = dev;
1281 ctx->id = of_alias_get_id(dev->of_node, "fimc");
1282
1283 /* construct formats/limits array */
1284 num_formats = ARRAY_SIZE(fimc_formats) + ARRAY_SIZE(fimc_tiled_formats);
1285 formats = devm_kcalloc(dev, num_formats, sizeof(*formats),
1286 GFP_KERNEL);
1287 if (!formats)
1288 return -ENOMEM;
1289
1290 /* linear formats */
1291 if (ctx->id < 3) {
1292 limits = fimc_4210_limits_v1;
1293 num_limits = ARRAY_SIZE(fimc_4210_limits_v1);
1294 } else {
1295 limits = fimc_4210_limits_v2;
1296 num_limits = ARRAY_SIZE(fimc_4210_limits_v2);
1297 }
1298 for (i = 0; i < ARRAY_SIZE(fimc_formats); i++) {
1299 formats[i].fourcc = fimc_formats[i];
1300 formats[i].type = DRM_EXYNOS_IPP_FORMAT_SOURCE |
1301 DRM_EXYNOS_IPP_FORMAT_DESTINATION;
1302 formats[i].limits = limits;
1303 formats[i].num_limits = num_limits;
1304 }
1305
1306 /* tiled formats */
1307 if (ctx->id < 3) {
1308 limits = fimc_4210_limits_tiled_v1;
1309 num_limits = ARRAY_SIZE(fimc_4210_limits_tiled_v1);
1310 } else {
1311 limits = fimc_4210_limits_tiled_v2;
1312 num_limits = ARRAY_SIZE(fimc_4210_limits_tiled_v2);
1313 }
1314 for (j = i, i = 0; i < ARRAY_SIZE(fimc_tiled_formats); j++, i++) {
1315 formats[j].fourcc = fimc_tiled_formats[i];
1316 formats[j].modifier = DRM_FORMAT_MOD_SAMSUNG_64_32_TILE;
1317 formats[j].type = DRM_EXYNOS_IPP_FORMAT_SOURCE |
1318 DRM_EXYNOS_IPP_FORMAT_DESTINATION;
1319 formats[j].limits = limits;
1320 formats[j].num_limits = num_limits;
1321 }
1322
1323 ctx->formats = formats;
1324 ctx->num_formats = num_formats;
1325
1326 /* resource memory */
1327 ctx->regs = devm_platform_ioremap_resource(pdev, 0);
1328 if (IS_ERR(ctx->regs))
1329 return PTR_ERR(ctx->regs);
1330
1331 /* resource irq */
1332 ret = platform_get_irq(pdev, 0);
1333 if (ret < 0)
1334 return ret;
1335
1336 ret = devm_request_irq(dev, ret, fimc_irq_handler,
1337 0, dev_name(dev), ctx);
1338 if (ret < 0) {
1339 dev_err(dev, "failed to request irq.\n");
1340 return ret;
1341 }
1342
1343 ret = fimc_setup_clocks(ctx);
1344 if (ret < 0)
1345 return ret;
1346
1347 spin_lock_init(&ctx->lock);
1348 platform_set_drvdata(pdev, ctx);
1349
1350 pm_runtime_use_autosuspend(dev);
1351 pm_runtime_set_autosuspend_delay(dev, FIMC_AUTOSUSPEND_DELAY);
1352 pm_runtime_enable(dev);
1353
1354 ret = component_add(dev, &fimc_component_ops);
1355 if (ret)
1356 goto err_pm_dis;
1357
1358 dev_info(dev, "drm fimc registered successfully.\n");
1359
1360 return 0;
1361
1362 err_pm_dis:
1363 pm_runtime_dont_use_autosuspend(dev);
1364 pm_runtime_disable(dev);
1365 fimc_put_clocks(ctx);
1366
1367 return ret;
1368 }
1369
fimc_remove(struct platform_device * pdev)1370 static int fimc_remove(struct platform_device *pdev)
1371 {
1372 struct device *dev = &pdev->dev;
1373 struct fimc_context *ctx = get_fimc_context(dev);
1374
1375 component_del(dev, &fimc_component_ops);
1376 pm_runtime_dont_use_autosuspend(dev);
1377 pm_runtime_disable(dev);
1378
1379 fimc_put_clocks(ctx);
1380
1381 return 0;
1382 }
1383
fimc_runtime_suspend(struct device * dev)1384 static int fimc_runtime_suspend(struct device *dev)
1385 {
1386 struct fimc_context *ctx = get_fimc_context(dev);
1387
1388 DRM_DEV_DEBUG_KMS(dev, "id[%d]\n", ctx->id);
1389 clk_disable_unprepare(ctx->clocks[FIMC_CLK_GATE]);
1390 return 0;
1391 }
1392
fimc_runtime_resume(struct device * dev)1393 static int fimc_runtime_resume(struct device *dev)
1394 {
1395 struct fimc_context *ctx = get_fimc_context(dev);
1396
1397 DRM_DEV_DEBUG_KMS(dev, "id[%d]\n", ctx->id);
1398 return clk_prepare_enable(ctx->clocks[FIMC_CLK_GATE]);
1399 }
1400
1401 static DEFINE_RUNTIME_DEV_PM_OPS(fimc_pm_ops, fimc_runtime_suspend,
1402 fimc_runtime_resume, NULL);
1403
1404 static const struct of_device_id fimc_of_match[] = {
1405 { .compatible = "samsung,exynos4210-fimc" },
1406 { .compatible = "samsung,exynos4212-fimc" },
1407 { },
1408 };
1409 MODULE_DEVICE_TABLE(of, fimc_of_match);
1410
1411 struct platform_driver fimc_driver = {
1412 .probe = fimc_probe,
1413 .remove = fimc_remove,
1414 .driver = {
1415 .of_match_table = fimc_of_match,
1416 .name = "exynos-drm-fimc",
1417 .owner = THIS_MODULE,
1418 .pm = pm_ptr(&fimc_pm_ops),
1419 },
1420 };
1421