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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / media / platform / exynos4-is / fimc-reg.c
blob0806724553a23f9a0a4f1d26a096e12fa2eafb4e
1 /*
2 * Register interface file for Samsung Camera Interface (FIMC) driver
3 *
4 * Copyright (C) 2010 - 2013 Samsung Electronics Co., Ltd.
5 * Sylwester Nawrocki <s.nawrocki@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/delay.h>
13 #include <linux/io.h>
14 #include <linux/regmap.h>
15
16 #include <media/drv-intf/exynos-fimc.h>
17 #include "media-dev.h"
18
19 #include "fimc-reg.h"
20 #include "fimc-core.h"
21
22 void fimc_hw_reset(struct fimc_dev *dev)
23 {
24 u32 cfg;
25
26 cfg = readl(dev->regs + FIMC_REG_CISRCFMT);
27 cfg |= FIMC_REG_CISRCFMT_ITU601_8BIT;
28 writel(cfg, dev->regs + FIMC_REG_CISRCFMT);
29
30 /* Software reset. */
31 cfg = readl(dev->regs + FIMC_REG_CIGCTRL);
32 cfg |= (FIMC_REG_CIGCTRL_SWRST | FIMC_REG_CIGCTRL_IRQ_LEVEL);
33 writel(cfg, dev->regs + FIMC_REG_CIGCTRL);
34 udelay(10);
35
36 cfg = readl(dev->regs + FIMC_REG_CIGCTRL);
37 cfg &= ~FIMC_REG_CIGCTRL_SWRST;
38 writel(cfg, dev->regs + FIMC_REG_CIGCTRL);
39
40 if (dev->drv_data->out_buf_count > 4)
41 fimc_hw_set_dma_seq(dev, 0xF);
42 }
43
44 static u32 fimc_hw_get_in_flip(struct fimc_ctx *ctx)
45 {
46 u32 flip = FIMC_REG_MSCTRL_FLIP_NORMAL;
47
48 if (ctx->hflip)
49 flip = FIMC_REG_MSCTRL_FLIP_Y_MIRROR;
50 if (ctx->vflip)
51 flip = FIMC_REG_MSCTRL_FLIP_X_MIRROR;
52
53 if (ctx->rotation <= 90)
54 return flip;
55
56 return (flip ^ FIMC_REG_MSCTRL_FLIP_180) & FIMC_REG_MSCTRL_FLIP_180;
57 }
58
59 static u32 fimc_hw_get_target_flip(struct fimc_ctx *ctx)
60 {
61 u32 flip = FIMC_REG_CITRGFMT_FLIP_NORMAL;
62
63 if (ctx->hflip)
64 flip |= FIMC_REG_CITRGFMT_FLIP_Y_MIRROR;
65 if (ctx->vflip)
66 flip |= FIMC_REG_CITRGFMT_FLIP_X_MIRROR;
67
68 if (ctx->rotation <= 90)
69 return flip;
70
71 return (flip ^ FIMC_REG_CITRGFMT_FLIP_180) & FIMC_REG_CITRGFMT_FLIP_180;
72 }
73
74 void fimc_hw_set_rotation(struct fimc_ctx *ctx)
75 {
76 u32 cfg, flip;
77 struct fimc_dev *dev = ctx->fimc_dev;
78
79 cfg = readl(dev->regs + FIMC_REG_CITRGFMT);
80 cfg &= ~(FIMC_REG_CITRGFMT_INROT90 | FIMC_REG_CITRGFMT_OUTROT90 |
81 FIMC_REG_CITRGFMT_FLIP_180);
82
83 /*
84 * The input and output rotator cannot work simultaneously.
85 * Use the output rotator in output DMA mode or the input rotator
86 * in direct fifo output mode.
87 */
88 if (ctx->rotation == 90 || ctx->rotation == 270) {
89 if (ctx->out_path == FIMC_IO_LCDFIFO)
90 cfg |= FIMC_REG_CITRGFMT_INROT90;
91 else
92 cfg |= FIMC_REG_CITRGFMT_OUTROT90;
93 }
94
95 if (ctx->out_path == FIMC_IO_DMA) {
96 cfg |= fimc_hw_get_target_flip(ctx);
97 writel(cfg, dev->regs + FIMC_REG_CITRGFMT);
98 } else {
99 /* LCD FIFO path */
100 flip = readl(dev->regs + FIMC_REG_MSCTRL);
101 flip &= ~FIMC_REG_MSCTRL_FLIP_MASK;
102 flip |= fimc_hw_get_in_flip(ctx);
103 writel(flip, dev->regs + FIMC_REG_MSCTRL);
104 }
105 }
106
107 void fimc_hw_set_target_format(struct fimc_ctx *ctx)
108 {
109 u32 cfg;
110 struct fimc_dev *dev = ctx->fimc_dev;
111 struct fimc_frame *frame = &ctx->d_frame;
112
113 dbg("w= %d, h= %d color: %d", frame->width,
114 frame->height, frame->fmt->color);
115
116 cfg = readl(dev->regs + FIMC_REG_CITRGFMT);
117 cfg &= ~(FIMC_REG_CITRGFMT_FMT_MASK | FIMC_REG_CITRGFMT_HSIZE_MASK |
118 FIMC_REG_CITRGFMT_VSIZE_MASK);
119
120 switch (frame->fmt->color) {
121 case FIMC_FMT_RGB444...FIMC_FMT_RGB888:
122 cfg |= FIMC_REG_CITRGFMT_RGB;
123 break;
124 case FIMC_FMT_YCBCR420:
125 cfg |= FIMC_REG_CITRGFMT_YCBCR420;
126 break;
127 case FIMC_FMT_YCBYCR422...FIMC_FMT_CRYCBY422:
128 if (frame->fmt->colplanes == 1)
129 cfg |= FIMC_REG_CITRGFMT_YCBCR422_1P;
130 else
131 cfg |= FIMC_REG_CITRGFMT_YCBCR422;
132 break;
133 default:
134 break;
135 }
136
137 if (ctx->rotation == 90 || ctx->rotation == 270)
138 cfg |= (frame->height << 16) | frame->width;
139 else
140 cfg |= (frame->width << 16) | frame->height;
141
142 writel(cfg, dev->regs + FIMC_REG_CITRGFMT);
143
144 cfg = readl(dev->regs + FIMC_REG_CITAREA);
145 cfg &= ~FIMC_REG_CITAREA_MASK;
146 cfg |= (frame->width * frame->height);
147 writel(cfg, dev->regs + FIMC_REG_CITAREA);
148 }
149
150 static void fimc_hw_set_out_dma_size(struct fimc_ctx *ctx)
151 {
152 struct fimc_dev *dev = ctx->fimc_dev;
153 struct fimc_frame *frame = &ctx->d_frame;
154 u32 cfg;
155
156 cfg = (frame->f_height << 16) | frame->f_width;
157 writel(cfg, dev->regs + FIMC_REG_ORGOSIZE);
158
159 /* Select color space conversion equation (HD/SD size).*/
160 cfg = readl(dev->regs + FIMC_REG_CIGCTRL);
161 if (frame->f_width >= 1280) /* HD */
162 cfg |= FIMC_REG_CIGCTRL_CSC_ITU601_709;
163 else /* SD */
164 cfg &= ~FIMC_REG_CIGCTRL_CSC_ITU601_709;
165 writel(cfg, dev->regs + FIMC_REG_CIGCTRL);
166
167 }
168
169 void fimc_hw_set_out_dma(struct fimc_ctx *ctx)
170 {
171 struct fimc_dev *dev = ctx->fimc_dev;
172 struct fimc_frame *frame = &ctx->d_frame;
173 struct fimc_dma_offset *offset = &frame->dma_offset;
174 struct fimc_fmt *fmt = frame->fmt;
175 u32 cfg;
176
177 /* Set the input dma offsets. */
178 cfg = (offset->y_v << 16) | offset->y_h;
179 writel(cfg, dev->regs + FIMC_REG_CIOYOFF);
180
181 cfg = (offset->cb_v << 16) | offset->cb_h;
182 writel(cfg, dev->regs + FIMC_REG_CIOCBOFF);
183
184 cfg = (offset->cr_v << 16) | offset->cr_h;
185 writel(cfg, dev->regs + FIMC_REG_CIOCROFF);
186
187 fimc_hw_set_out_dma_size(ctx);
188
189 /* Configure chroma components order. */
190 cfg = readl(dev->regs + FIMC_REG_CIOCTRL);
191
192 cfg &= ~(FIMC_REG_CIOCTRL_ORDER2P_MASK |
193 FIMC_REG_CIOCTRL_ORDER422_MASK |
194 FIMC_REG_CIOCTRL_YCBCR_PLANE_MASK |
195 FIMC_REG_CIOCTRL_RGB16FMT_MASK);
196
197 if (fmt->colplanes == 1)
198 cfg |= ctx->out_order_1p;
199 else if (fmt->colplanes == 2)
200 cfg |= ctx->out_order_2p | FIMC_REG_CIOCTRL_YCBCR_2PLANE;
201 else if (fmt->colplanes == 3)
202 cfg |= FIMC_REG_CIOCTRL_YCBCR_3PLANE;
203
204 if (fmt->color == FIMC_FMT_RGB565)
205 cfg |= FIMC_REG_CIOCTRL_RGB565;
206 else if (fmt->color == FIMC_FMT_RGB555)
207 cfg |= FIMC_REG_CIOCTRL_ARGB1555;
208 else if (fmt->color == FIMC_FMT_RGB444)
209 cfg |= FIMC_REG_CIOCTRL_ARGB4444;
210
211 writel(cfg, dev->regs + FIMC_REG_CIOCTRL);
212 }
213
214 static void fimc_hw_en_autoload(struct fimc_dev *dev, int enable)
215 {
216 u32 cfg = readl(dev->regs + FIMC_REG_ORGISIZE);
217 if (enable)
218 cfg |= FIMC_REG_CIREAL_ISIZE_AUTOLOAD_EN;
219 else
220 cfg &= ~FIMC_REG_CIREAL_ISIZE_AUTOLOAD_EN;
221 writel(cfg, dev->regs + FIMC_REG_ORGISIZE);
222 }
223
224 void fimc_hw_en_lastirq(struct fimc_dev *dev, int enable)
225 {
226 u32 cfg = readl(dev->regs + FIMC_REG_CIOCTRL);
227 if (enable)
228 cfg |= FIMC_REG_CIOCTRL_LASTIRQ_ENABLE;
229 else
230 cfg &= ~FIMC_REG_CIOCTRL_LASTIRQ_ENABLE;
231 writel(cfg, dev->regs + FIMC_REG_CIOCTRL);
232 }
233
234 void fimc_hw_set_prescaler(struct fimc_ctx *ctx)
235 {
236 struct fimc_dev *dev = ctx->fimc_dev;
237 struct fimc_scaler *sc = &ctx->scaler;
238 u32 cfg, shfactor;
239
240 shfactor = 10 - (sc->hfactor + sc->vfactor);
241 cfg = shfactor << 28;
242
243 cfg |= (sc->pre_hratio << 16) | sc->pre_vratio;
244 writel(cfg, dev->regs + FIMC_REG_CISCPRERATIO);
245
246 cfg = (sc->pre_dst_width << 16) | sc->pre_dst_height;
247 writel(cfg, dev->regs + FIMC_REG_CISCPREDST);
248 }
249
250 static void fimc_hw_set_scaler(struct fimc_ctx *ctx)
251 {
252 struct fimc_dev *dev = ctx->fimc_dev;
253 struct fimc_scaler *sc = &ctx->scaler;
254 struct fimc_frame *src_frame = &ctx->s_frame;
255 struct fimc_frame *dst_frame = &ctx->d_frame;
256
257 u32 cfg = readl(dev->regs + FIMC_REG_CISCCTRL);
258
259 cfg &= ~(FIMC_REG_CISCCTRL_CSCR2Y_WIDE | FIMC_REG_CISCCTRL_CSCY2R_WIDE |
260 FIMC_REG_CISCCTRL_SCALEUP_H | FIMC_REG_CISCCTRL_SCALEUP_V |
261 FIMC_REG_CISCCTRL_SCALERBYPASS | FIMC_REG_CISCCTRL_ONE2ONE |
262 FIMC_REG_CISCCTRL_INRGB_FMT_MASK | FIMC_REG_CISCCTRL_OUTRGB_FMT_MASK |
263 FIMC_REG_CISCCTRL_INTERLACE | FIMC_REG_CISCCTRL_RGB_EXT);
264
265 if (!(ctx->flags & FIMC_COLOR_RANGE_NARROW))
266 cfg |= (FIMC_REG_CISCCTRL_CSCR2Y_WIDE |
267 FIMC_REG_CISCCTRL_CSCY2R_WIDE);
268
269 if (!sc->enabled)
270 cfg |= FIMC_REG_CISCCTRL_SCALERBYPASS;
271
272 if (sc->scaleup_h)
273 cfg |= FIMC_REG_CISCCTRL_SCALEUP_H;
274
275 if (sc->scaleup_v)
276 cfg |= FIMC_REG_CISCCTRL_SCALEUP_V;
277
278 if (sc->copy_mode)
279 cfg |= FIMC_REG_CISCCTRL_ONE2ONE;
280
281 if (ctx->in_path == FIMC_IO_DMA) {
282 switch (src_frame->fmt->color) {
283 case FIMC_FMT_RGB565:
284 cfg |= FIMC_REG_CISCCTRL_INRGB_FMT_RGB565;
285 break;
286 case FIMC_FMT_RGB666:
287 cfg |= FIMC_REG_CISCCTRL_INRGB_FMT_RGB666;
288 break;
289 case FIMC_FMT_RGB888:
290 cfg |= FIMC_REG_CISCCTRL_INRGB_FMT_RGB888;
291 break;
292 }
293 }
294
295 if (ctx->out_path == FIMC_IO_DMA) {
296 u32 color = dst_frame->fmt->color;
297
298 if (color >= FIMC_FMT_RGB444 && color <= FIMC_FMT_RGB565)
299 cfg |= FIMC_REG_CISCCTRL_OUTRGB_FMT_RGB565;
300 else if (color == FIMC_FMT_RGB666)
301 cfg |= FIMC_REG_CISCCTRL_OUTRGB_FMT_RGB666;
302 else if (color == FIMC_FMT_RGB888)
303 cfg |= FIMC_REG_CISCCTRL_OUTRGB_FMT_RGB888;
304 } else {
305 cfg |= FIMC_REG_CISCCTRL_OUTRGB_FMT_RGB888;
306
307 if (ctx->flags & FIMC_SCAN_MODE_INTERLACED)
308 cfg |= FIMC_REG_CISCCTRL_INTERLACE;
309 }
310
311 writel(cfg, dev->regs + FIMC_REG_CISCCTRL);
312 }
313
314 void fimc_hw_set_mainscaler(struct fimc_ctx *ctx)
315 {
316 struct fimc_dev *dev = ctx->fimc_dev;
317 const struct fimc_variant *variant = dev->variant;
318 struct fimc_scaler *sc = &ctx->scaler;
319 u32 cfg;
320
321 dbg("main_hratio= 0x%X main_vratio= 0x%X",
322 sc->main_hratio, sc->main_vratio);
323
324 fimc_hw_set_scaler(ctx);
325
326 cfg = readl(dev->regs + FIMC_REG_CISCCTRL);
327 cfg &= ~(FIMC_REG_CISCCTRL_MHRATIO_MASK |
328 FIMC_REG_CISCCTRL_MVRATIO_MASK);
329
330 if (variant->has_mainscaler_ext) {
331 cfg |= FIMC_REG_CISCCTRL_MHRATIO_EXT(sc->main_hratio);
332 cfg |= FIMC_REG_CISCCTRL_MVRATIO_EXT(sc->main_vratio);
333 writel(cfg, dev->regs + FIMC_REG_CISCCTRL);
334
335 cfg = readl(dev->regs + FIMC_REG_CIEXTEN);
336
337 cfg &= ~(FIMC_REG_CIEXTEN_MVRATIO_EXT_MASK |
338 FIMC_REG_CIEXTEN_MHRATIO_EXT_MASK);
339 cfg |= FIMC_REG_CIEXTEN_MHRATIO_EXT(sc->main_hratio);
340 cfg |= FIMC_REG_CIEXTEN_MVRATIO_EXT(sc->main_vratio);
341 writel(cfg, dev->regs + FIMC_REG_CIEXTEN);
342 } else {
343 cfg |= FIMC_REG_CISCCTRL_MHRATIO(sc->main_hratio);
344 cfg |= FIMC_REG_CISCCTRL_MVRATIO(sc->main_vratio);
345 writel(cfg, dev->regs + FIMC_REG_CISCCTRL);
346 }
347 }
348
349 void fimc_hw_enable_capture(struct fimc_ctx *ctx)
350 {
351 struct fimc_dev *dev = ctx->fimc_dev;
352 u32 cfg;
353
354 cfg = readl(dev->regs + FIMC_REG_CIIMGCPT);
355 cfg |= FIMC_REG_CIIMGCPT_CPT_FREN_ENABLE;
356
357 if (ctx->scaler.enabled)
358 cfg |= FIMC_REG_CIIMGCPT_IMGCPTEN_SC;
359 else
360 cfg &= FIMC_REG_CIIMGCPT_IMGCPTEN_SC;
361
362 cfg |= FIMC_REG_CIIMGCPT_IMGCPTEN;
363 writel(cfg, dev->regs + FIMC_REG_CIIMGCPT);
364 }
365
366 void fimc_hw_disable_capture(struct fimc_dev *dev)
367 {
368 u32 cfg = readl(dev->regs + FIMC_REG_CIIMGCPT);
369 cfg &= ~(FIMC_REG_CIIMGCPT_IMGCPTEN |
370 FIMC_REG_CIIMGCPT_IMGCPTEN_SC);
371 writel(cfg, dev->regs + FIMC_REG_CIIMGCPT);
372 }
373
374 void fimc_hw_set_effect(struct fimc_ctx *ctx)
375 {
376 struct fimc_dev *dev = ctx->fimc_dev;
377 struct fimc_effect *effect = &ctx->effect;
378 u32 cfg = 0;
379
380 if (effect->type != FIMC_REG_CIIMGEFF_FIN_BYPASS) {
381 cfg |= FIMC_REG_CIIMGEFF_IE_SC_AFTER |
382 FIMC_REG_CIIMGEFF_IE_ENABLE;
383 cfg |= effect->type;
384 if (effect->type == FIMC_REG_CIIMGEFF_FIN_ARBITRARY)
385 cfg |= (effect->pat_cb << 13) | effect->pat_cr;
386 }
387
388 writel(cfg, dev->regs + FIMC_REG_CIIMGEFF);
389 }
390
391 void fimc_hw_set_rgb_alpha(struct fimc_ctx *ctx)
392 {
393 struct fimc_dev *dev = ctx->fimc_dev;
394 struct fimc_frame *frame = &ctx->d_frame;
395 u32 cfg;
396
397 if (!(frame->fmt->flags & FMT_HAS_ALPHA))
398 return;
399
400 cfg = readl(dev->regs + FIMC_REG_CIOCTRL);
401 cfg &= ~FIMC_REG_CIOCTRL_ALPHA_OUT_MASK;
402 cfg |= (frame->alpha << 4);
403 writel(cfg, dev->regs + FIMC_REG_CIOCTRL);
404 }
405
406 static void fimc_hw_set_in_dma_size(struct fimc_ctx *ctx)
407 {
408 struct fimc_dev *dev = ctx->fimc_dev;
409 struct fimc_frame *frame = &ctx->s_frame;
410 u32 cfg_o = 0;
411 u32 cfg_r = 0;
412
413 if (FIMC_IO_LCDFIFO == ctx->out_path)
414 cfg_r |= FIMC_REG_CIREAL_ISIZE_AUTOLOAD_EN;
415
416 cfg_o |= (frame->f_height << 16) | frame->f_width;
417 cfg_r |= (frame->height << 16) | frame->width;
418
419 writel(cfg_o, dev->regs + FIMC_REG_ORGISIZE);
420 writel(cfg_r, dev->regs + FIMC_REG_CIREAL_ISIZE);
421 }
422
423 void fimc_hw_set_in_dma(struct fimc_ctx *ctx)
424 {
425 struct fimc_dev *dev = ctx->fimc_dev;
426 struct fimc_frame *frame = &ctx->s_frame;
427 struct fimc_dma_offset *offset = &frame->dma_offset;
428 u32 cfg;
429
430 /* Set the pixel offsets. */
431 cfg = (offset->y_v << 16) | offset->y_h;
432 writel(cfg, dev->regs + FIMC_REG_CIIYOFF);
433
434 cfg = (offset->cb_v << 16) | offset->cb_h;
435 writel(cfg, dev->regs + FIMC_REG_CIICBOFF);
436
437 cfg = (offset->cr_v << 16) | offset->cr_h;
438 writel(cfg, dev->regs + FIMC_REG_CIICROFF);
439
440 /* Input original and real size. */
441 fimc_hw_set_in_dma_size(ctx);
442
443 /* Use DMA autoload only in FIFO mode. */
444 fimc_hw_en_autoload(dev, ctx->out_path == FIMC_IO_LCDFIFO);
445
446 /* Set the input DMA to process single frame only. */
447 cfg = readl(dev->regs + FIMC_REG_MSCTRL);
448 cfg &= ~(FIMC_REG_MSCTRL_INFORMAT_MASK
449 | FIMC_REG_MSCTRL_IN_BURST_COUNT_MASK
450 | FIMC_REG_MSCTRL_INPUT_MASK
451 | FIMC_REG_MSCTRL_C_INT_IN_MASK
452 | FIMC_REG_MSCTRL_2P_IN_ORDER_MASK
453 | FIMC_REG_MSCTRL_ORDER422_MASK);
454
455 cfg |= (FIMC_REG_MSCTRL_IN_BURST_COUNT(4)
456 | FIMC_REG_MSCTRL_INPUT_MEMORY
457 | FIMC_REG_MSCTRL_FIFO_CTRL_FULL);
458
459 switch (frame->fmt->color) {
460 case FIMC_FMT_RGB565...FIMC_FMT_RGB888:
461 cfg |= FIMC_REG_MSCTRL_INFORMAT_RGB;
462 break;
463 case FIMC_FMT_YCBCR420:
464 cfg |= FIMC_REG_MSCTRL_INFORMAT_YCBCR420;
465
466 if (frame->fmt->colplanes == 2)
467 cfg |= ctx->in_order_2p | FIMC_REG_MSCTRL_C_INT_IN_2PLANE;
468 else
469 cfg |= FIMC_REG_MSCTRL_C_INT_IN_3PLANE;
470
471 break;
472 case FIMC_FMT_YCBYCR422...FIMC_FMT_CRYCBY422:
473 if (frame->fmt->colplanes == 1) {
474 cfg |= ctx->in_order_1p
475 | FIMC_REG_MSCTRL_INFORMAT_YCBCR422_1P;
476 } else {
477 cfg |= FIMC_REG_MSCTRL_INFORMAT_YCBCR422;
478
479 if (frame->fmt->colplanes == 2)
480 cfg |= ctx->in_order_2p
481 | FIMC_REG_MSCTRL_C_INT_IN_2PLANE;
482 else
483 cfg |= FIMC_REG_MSCTRL_C_INT_IN_3PLANE;
484 }
485 break;
486 default:
487 break;
488 }
489
490 writel(cfg, dev->regs + FIMC_REG_MSCTRL);
491
492 /* Input/output DMA linear/tiled mode. */
493 cfg = readl(dev->regs + FIMC_REG_CIDMAPARAM);
494 cfg &= ~FIMC_REG_CIDMAPARAM_TILE_MASK;
495
496 if (tiled_fmt(ctx->s_frame.fmt))
497 cfg |= FIMC_REG_CIDMAPARAM_R_64X32;
498
499 if (tiled_fmt(ctx->d_frame.fmt))
500 cfg |= FIMC_REG_CIDMAPARAM_W_64X32;
501
502 writel(cfg, dev->regs + FIMC_REG_CIDMAPARAM);
503 }
504
505
506 void fimc_hw_set_input_path(struct fimc_ctx *ctx)
507 {
508 struct fimc_dev *dev = ctx->fimc_dev;
509
510 u32 cfg = readl(dev->regs + FIMC_REG_MSCTRL);
511 cfg &= ~FIMC_REG_MSCTRL_INPUT_MASK;
512
513 if (ctx->in_path == FIMC_IO_DMA)
514 cfg |= FIMC_REG_MSCTRL_INPUT_MEMORY;
515 else
516 cfg |= FIMC_REG_MSCTRL_INPUT_EXTCAM;
517
518 writel(cfg, dev->regs + FIMC_REG_MSCTRL);
519 }
520
521 void fimc_hw_set_output_path(struct fimc_ctx *ctx)
522 {
523 struct fimc_dev *dev = ctx->fimc_dev;
524
525 u32 cfg = readl(dev->regs + FIMC_REG_CISCCTRL);
526 cfg &= ~FIMC_REG_CISCCTRL_LCDPATHEN_FIFO;
527 if (ctx->out_path == FIMC_IO_LCDFIFO)
528 cfg |= FIMC_REG_CISCCTRL_LCDPATHEN_FIFO;
529 writel(cfg, dev->regs + FIMC_REG_CISCCTRL);
530 }
531
532 void fimc_hw_set_input_addr(struct fimc_dev *dev, struct fimc_addr *paddr)
533 {
534 u32 cfg = readl(dev->regs + FIMC_REG_CIREAL_ISIZE);
535 cfg |= FIMC_REG_CIREAL_ISIZE_ADDR_CH_DIS;
536 writel(cfg, dev->regs + FIMC_REG_CIREAL_ISIZE);
537
538 writel(paddr->y, dev->regs + FIMC_REG_CIIYSA(0));
539 writel(paddr->cb, dev->regs + FIMC_REG_CIICBSA(0));
540 writel(paddr->cr, dev->regs + FIMC_REG_CIICRSA(0));
541
542 cfg &= ~FIMC_REG_CIREAL_ISIZE_ADDR_CH_DIS;
543 writel(cfg, dev->regs + FIMC_REG_CIREAL_ISIZE);
544 }
545
546 void fimc_hw_set_output_addr(struct fimc_dev *dev,
547 struct fimc_addr *paddr, int index)
548 {
549 int i = (index == -1) ? 0 : index;
550 do {
551 writel(paddr->y, dev->regs + FIMC_REG_CIOYSA(i));
552 writel(paddr->cb, dev->regs + FIMC_REG_CIOCBSA(i));
553 writel(paddr->cr, dev->regs + FIMC_REG_CIOCRSA(i));
554 dbg("dst_buf[%d]: 0x%X, cb: 0x%X, cr: 0x%X",
555 i, paddr->y, paddr->cb, paddr->cr);
556 } while (index == -1 && ++i < FIMC_MAX_OUT_BUFS);
557 }
558
559 int fimc_hw_set_camera_polarity(struct fimc_dev *fimc,
560 struct fimc_source_info *cam)
561 {
562 u32 cfg = readl(fimc->regs + FIMC_REG_CIGCTRL);
563
564 cfg &= ~(FIMC_REG_CIGCTRL_INVPOLPCLK | FIMC_REG_CIGCTRL_INVPOLVSYNC |
565 FIMC_REG_CIGCTRL_INVPOLHREF | FIMC_REG_CIGCTRL_INVPOLHSYNC |
566 FIMC_REG_CIGCTRL_INVPOLFIELD);
567
568 if (cam->flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
569 cfg |= FIMC_REG_CIGCTRL_INVPOLPCLK;
570
571 if (cam->flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
572 cfg |= FIMC_REG_CIGCTRL_INVPOLVSYNC;
573
574 if (cam->flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
575 cfg |= FIMC_REG_CIGCTRL_INVPOLHREF;
576
577 if (cam->flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
578 cfg |= FIMC_REG_CIGCTRL_INVPOLHSYNC;
579
580 if (cam->flags & V4L2_MBUS_FIELD_EVEN_LOW)
581 cfg |= FIMC_REG_CIGCTRL_INVPOLFIELD;
582
583 writel(cfg, fimc->regs + FIMC_REG_CIGCTRL);
584
585 return 0;
586 }
587
588 struct mbus_pixfmt_desc {
589 u32 pixelcode;
590 u32 cisrcfmt;
591 u16 bus_width;
592 };
593
594 static const struct mbus_pixfmt_desc pix_desc[] = {
595 { MEDIA_BUS_FMT_YUYV8_2X8, FIMC_REG_CISRCFMT_ORDER422_YCBYCR, 8 },
596 { MEDIA_BUS_FMT_YVYU8_2X8, FIMC_REG_CISRCFMT_ORDER422_YCRYCB, 8 },
597 { MEDIA_BUS_FMT_VYUY8_2X8, FIMC_REG_CISRCFMT_ORDER422_CRYCBY, 8 },
598 { MEDIA_BUS_FMT_UYVY8_2X8, FIMC_REG_CISRCFMT_ORDER422_CBYCRY, 8 },
599 };
600
601 int fimc_hw_set_camera_source(struct fimc_dev *fimc,
602 struct fimc_source_info *source)
603 {
604 struct fimc_vid_cap *vc = &fimc->vid_cap;
605 struct fimc_frame *f = &vc->ctx->s_frame;
606 u32 bus_width, cfg = 0;
607 int i;
608
609 switch (source->fimc_bus_type) {
610 case FIMC_BUS_TYPE_ITU_601:
611 case FIMC_BUS_TYPE_ITU_656:
612 for (i = 0; i < ARRAY_SIZE(pix_desc); i++) {
613 if (vc->ci_fmt.code == pix_desc[i].pixelcode) {
614 cfg = pix_desc[i].cisrcfmt;
615 bus_width = pix_desc[i].bus_width;
616 break;
617 }
618 }
619
620 if (i == ARRAY_SIZE(pix_desc)) {
621 v4l2_err(&vc->ve.vdev,
622 "Camera color format not supported: %d\n",
623 vc->ci_fmt.code);
624 return -EINVAL;
625 }
626
627 if (source->fimc_bus_type == FIMC_BUS_TYPE_ITU_601) {
628 if (bus_width == 8)
629 cfg |= FIMC_REG_CISRCFMT_ITU601_8BIT;
630 else if (bus_width == 16)
631 cfg |= FIMC_REG_CISRCFMT_ITU601_16BIT;
632 } /* else defaults to ITU-R BT.656 8-bit */
633 break;
634 case FIMC_BUS_TYPE_MIPI_CSI2:
635 if (fimc_fmt_is_user_defined(f->fmt->color))
636 cfg |= FIMC_REG_CISRCFMT_ITU601_8BIT;
637 break;
638 default:
639 case FIMC_BUS_TYPE_ISP_WRITEBACK:
640 /* Anything to do here ? */
641 break;
642 }
643
644 cfg |= (f->o_width << 16) | f->o_height;
645 writel(cfg, fimc->regs + FIMC_REG_CISRCFMT);
646 return 0;
647 }
648
649 void fimc_hw_set_camera_offset(struct fimc_dev *fimc, struct fimc_frame *f)
650 {
651 u32 hoff2, voff2;
652
653 u32 cfg = readl(fimc->regs + FIMC_REG_CIWDOFST);
654
655 cfg &= ~(FIMC_REG_CIWDOFST_HOROFF_MASK | FIMC_REG_CIWDOFST_VEROFF_MASK);
656 cfg |= FIMC_REG_CIWDOFST_OFF_EN |
657 (f->offs_h << 16) | f->offs_v;
658
659 writel(cfg, fimc->regs + FIMC_REG_CIWDOFST);
660
661 /* See CIWDOFSTn register description in the datasheet for details. */
662 hoff2 = f->o_width - f->width - f->offs_h;
663 voff2 = f->o_height - f->height - f->offs_v;
664 cfg = (hoff2 << 16) | voff2;
665 writel(cfg, fimc->regs + FIMC_REG_CIWDOFST2);
666 }
667
668 int fimc_hw_set_camera_type(struct fimc_dev *fimc,
669 struct fimc_source_info *source)
670 {
671 struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
672 u32 csis_data_alignment = 32;
673 u32 cfg, tmp;
674
675 cfg = readl(fimc->regs + FIMC_REG_CIGCTRL);
676
677 /* Select ITU B interface, disable Writeback path and test pattern. */
678 cfg &= ~(FIMC_REG_CIGCTRL_TESTPAT_MASK | FIMC_REG_CIGCTRL_SELCAM_ITU_A |
679 FIMC_REG_CIGCTRL_SELCAM_MIPI | FIMC_REG_CIGCTRL_CAMIF_SELWB |
680 FIMC_REG_CIGCTRL_SELCAM_MIPI_A | FIMC_REG_CIGCTRL_CAM_JPEG |
681 FIMC_REG_CIGCTRL_SELWB_A);
682
683 switch (source->fimc_bus_type) {
684 case FIMC_BUS_TYPE_MIPI_CSI2:
685 cfg |= FIMC_REG_CIGCTRL_SELCAM_MIPI;
686
687 if (source->mux_id == 0)
688 cfg |= FIMC_REG_CIGCTRL_SELCAM_MIPI_A;
689
690 /* TODO: add remaining supported formats. */
691 switch (vid_cap->ci_fmt.code) {
692 case MEDIA_BUS_FMT_VYUY8_2X8:
693 tmp = FIMC_REG_CSIIMGFMT_YCBCR422_8BIT;
694 break;
695 case MEDIA_BUS_FMT_JPEG_1X8:
696 case MEDIA_BUS_FMT_S5C_UYVY_JPEG_1X8:
697 tmp = FIMC_REG_CSIIMGFMT_USER(1);
698 cfg |= FIMC_REG_CIGCTRL_CAM_JPEG;
699 break;
700 default:
701 v4l2_err(&vid_cap->ve.vdev,
702 "Not supported camera pixel format: %#x\n",
703 vid_cap->ci_fmt.code);
704 return -EINVAL;
705 }
706 tmp |= (csis_data_alignment == 32) << 8;
707
708 writel(tmp, fimc->regs + FIMC_REG_CSIIMGFMT);
709 break;
710 case FIMC_BUS_TYPE_ITU_601...FIMC_BUS_TYPE_ITU_656:
711 if (source->mux_id == 0) /* ITU-A, ITU-B: 0, 1 */
712 cfg |= FIMC_REG_CIGCTRL_SELCAM_ITU_A;
713 break;
714 case FIMC_BUS_TYPE_LCD_WRITEBACK_A:
715 cfg |= FIMC_REG_CIGCTRL_CAMIF_SELWB;
716 /* fall through */
717 case FIMC_BUS_TYPE_ISP_WRITEBACK:
718 if (fimc->variant->has_isp_wb)
719 cfg |= FIMC_REG_CIGCTRL_CAMIF_SELWB;
720 else
721 WARN_ONCE(1, "ISP Writeback input is not supported\n");
722 break;
723 default:
724 v4l2_err(&vid_cap->ve.vdev,
725 "Invalid FIMC bus type selected: %d\n",
726 source->fimc_bus_type);
727 return -EINVAL;
728 }
729 writel(cfg, fimc->regs + FIMC_REG_CIGCTRL);
730
731 return 0;
732 }
733
734 void fimc_hw_clear_irq(struct fimc_dev *dev)
735 {
736 u32 cfg = readl(dev->regs + FIMC_REG_CIGCTRL);
737 cfg |= FIMC_REG_CIGCTRL_IRQ_CLR;
738 writel(cfg, dev->regs + FIMC_REG_CIGCTRL);
739 }
740
741 void fimc_hw_enable_scaler(struct fimc_dev *dev, bool on)
742 {
743 u32 cfg = readl(dev->regs + FIMC_REG_CISCCTRL);
744 if (on)
745 cfg |= FIMC_REG_CISCCTRL_SCALERSTART;
746 else
747 cfg &= ~FIMC_REG_CISCCTRL_SCALERSTART;
748 writel(cfg, dev->regs + FIMC_REG_CISCCTRL);
749 }
750
751 void fimc_hw_activate_input_dma(struct fimc_dev *dev, bool on)
752 {
753 u32 cfg = readl(dev->regs + FIMC_REG_MSCTRL);
754 if (on)
755 cfg |= FIMC_REG_MSCTRL_ENVID;
756 else
757 cfg &= ~FIMC_REG_MSCTRL_ENVID;
758 writel(cfg, dev->regs + FIMC_REG_MSCTRL);
759 }
760
761 /* Return an index to the buffer actually being written. */
762 s32 fimc_hw_get_frame_index(struct fimc_dev *dev)
763 {
764 s32 reg;
765
766 if (dev->drv_data->cistatus2) {
767 reg = readl(dev->regs + FIMC_REG_CISTATUS2) & 0x3f;
768 return reg - 1;
769 }
770
771 reg = readl(dev->regs + FIMC_REG_CISTATUS);
772
773 return (reg & FIMC_REG_CISTATUS_FRAMECNT_MASK) >>
774 FIMC_REG_CISTATUS_FRAMECNT_SHIFT;
775 }
776
777 /* Return an index to the buffer being written previously. */
778 s32 fimc_hw_get_prev_frame_index(struct fimc_dev *dev)
779 {
780 s32 reg;
781
782 if (!dev->drv_data->cistatus2)
783 return -1;
784
785 reg = readl(dev->regs + FIMC_REG_CISTATUS2);
786 return ((reg >> 7) & 0x3f) - 1;
787 }
788
789 /* Locking: the caller holds fimc->slock */
790 void fimc_activate_capture(struct fimc_ctx *ctx)
791 {
792 fimc_hw_enable_scaler(ctx->fimc_dev, ctx->scaler.enabled);
793 fimc_hw_enable_capture(ctx);
794 }
795
796 void fimc_deactivate_capture(struct fimc_dev *fimc)
797 {
798 fimc_hw_en_lastirq(fimc, true);
799 fimc_hw_disable_capture(fimc);
800 fimc_hw_enable_scaler(fimc, false);
801 fimc_hw_en_lastirq(fimc, false);
802 }
803
804 int fimc_hw_camblk_cfg_writeback(struct fimc_dev *fimc)
805 {
806 struct regmap *map = fimc->sysreg;
807 unsigned int mask, val, camblk_cfg;
808 int ret;
809
810 if (map == NULL)
811 return 0;
812
813 ret = regmap_read(map, SYSREG_CAMBLK, &camblk_cfg);
814 if (ret < 0 || ((camblk_cfg & 0x00700000) >> 20 != 0x3))
815 return ret;
816
817 if (!WARN(fimc->id >= 3, "not supported id: %d\n", fimc->id))
818 val = 0x1 << (fimc->id + 20);
819 else
820 val = 0;
821
822 mask = SYSREG_CAMBLK_FIFORST_ISP | SYSREG_CAMBLK_ISPWB_FULL_EN;
823 ret = regmap_update_bits(map, SYSREG_CAMBLK, mask, val);
824 if (ret < 0)
825 return ret;
826
827 usleep_range(1000, 2000);
828
829 val |= SYSREG_CAMBLK_FIFORST_ISP;
830 ret = regmap_update_bits(map, SYSREG_CAMBLK, mask, val);
831 if (ret < 0)
832 return ret;
833
834 mask = SYSREG_ISPBLK_FIFORST_CAM_BLK;
835 ret = regmap_update_bits(map, SYSREG_ISPBLK, mask, ~mask);
836 if (ret < 0)
837 return ret;
838
839 usleep_range(1000, 2000);
840
841 return regmap_update_bits(map, SYSREG_ISPBLK, mask, mask);
842 }
CRIS linux kernel tree