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15#include <linux/export.h>
16#include <linux/module.h>
17#include <linux/types.h>
18#include <linux/errno.h>
19#include <linux/delay.h>
20#include <linux/io.h>
21#include <linux/err.h>
22#include <linux/platform_device.h>
23#include <linux/videodev2.h>
24#include <uapi/linux/v4l2-mediabus.h>
25#include <linux/clk.h>
26#include <linux/clk-provider.h>
27#include <linux/clkdev.h>
28
29#include "ipu-prv.h"
30
31struct ipu_csi {
32 void __iomem *base;
33 int id;
34 u32 module;
35 struct clk *clk_ipu;
36 spinlock_t lock;
37 bool inuse;
38 struct ipu_soc *ipu;
39};
40
41
42#define CSI_SENS_CONF 0x0000
43#define CSI_SENS_FRM_SIZE 0x0004
44#define CSI_ACT_FRM_SIZE 0x0008
45#define CSI_OUT_FRM_CTRL 0x000c
46#define CSI_TST_CTRL 0x0010
47#define CSI_CCIR_CODE_1 0x0014
48#define CSI_CCIR_CODE_2 0x0018
49#define CSI_CCIR_CODE_3 0x001c
50#define CSI_MIPI_DI 0x0020
51#define CSI_SKIP 0x0024
52#define CSI_CPD_CTRL 0x0028
53#define CSI_CPD_RC(n) (0x002c + ((n)*4))
54#define CSI_CPD_RS(n) (0x004c + ((n)*4))
55#define CSI_CPD_GRC(n) (0x005c + ((n)*4))
56#define CSI_CPD_GRS(n) (0x007c + ((n)*4))
57#define CSI_CPD_GBC(n) (0x008c + ((n)*4))
58#define CSI_CPD_GBS(n) (0x00Ac + ((n)*4))
59#define CSI_CPD_BC(n) (0x00Bc + ((n)*4))
60#define CSI_CPD_BS(n) (0x00Dc + ((n)*4))
61#define CSI_CPD_OFFSET1 0x00ec
62#define CSI_CPD_OFFSET2 0x00f0
63
64
65#define CSI_SENS_CONF_DATA_FMT_SHIFT 8
66#define CSI_SENS_CONF_DATA_FMT_MASK 0x00000700
67#define CSI_SENS_CONF_DATA_FMT_RGB_YUV444 0L
68#define CSI_SENS_CONF_DATA_FMT_YUV422_YUYV 1L
69#define CSI_SENS_CONF_DATA_FMT_YUV422_UYVY 2L
70#define CSI_SENS_CONF_DATA_FMT_BAYER 3L
71#define CSI_SENS_CONF_DATA_FMT_RGB565 4L
72#define CSI_SENS_CONF_DATA_FMT_RGB555 5L
73#define CSI_SENS_CONF_DATA_FMT_RGB444 6L
74#define CSI_SENS_CONF_DATA_FMT_JPEG 7L
75
76#define CSI_SENS_CONF_VSYNC_POL_SHIFT 0
77#define CSI_SENS_CONF_HSYNC_POL_SHIFT 1
78#define CSI_SENS_CONF_DATA_POL_SHIFT 2
79#define CSI_SENS_CONF_PIX_CLK_POL_SHIFT 3
80#define CSI_SENS_CONF_SENS_PRTCL_MASK 0x00000070
81#define CSI_SENS_CONF_SENS_PRTCL_SHIFT 4
82#define CSI_SENS_CONF_PACK_TIGHT_SHIFT 7
83#define CSI_SENS_CONF_DATA_WIDTH_SHIFT 11
84#define CSI_SENS_CONF_EXT_VSYNC_SHIFT 15
85#define CSI_SENS_CONF_DIVRATIO_SHIFT 16
86
87#define CSI_SENS_CONF_DIVRATIO_MASK 0x00ff0000
88#define CSI_SENS_CONF_DATA_DEST_SHIFT 24
89#define CSI_SENS_CONF_DATA_DEST_MASK 0x07000000
90#define CSI_SENS_CONF_JPEG8_EN_SHIFT 27
91#define CSI_SENS_CONF_JPEG_EN_SHIFT 28
92#define CSI_SENS_CONF_FORCE_EOF_SHIFT 29
93#define CSI_SENS_CONF_DATA_EN_POL_SHIFT 31
94
95#define CSI_DATA_DEST_IC 2
96#define CSI_DATA_DEST_IDMAC 4
97
98#define CSI_CCIR_ERR_DET_EN 0x01000000
99#define CSI_HORI_DOWNSIZE_EN 0x80000000
100#define CSI_VERT_DOWNSIZE_EN 0x40000000
101#define CSI_TEST_GEN_MODE_EN 0x01000000
102
103#define CSI_HSC_MASK 0x1fff0000
104#define CSI_HSC_SHIFT 16
105#define CSI_VSC_MASK 0x00000fff
106#define CSI_VSC_SHIFT 0
107
108#define CSI_TEST_GEN_R_MASK 0x000000ff
109#define CSI_TEST_GEN_R_SHIFT 0
110#define CSI_TEST_GEN_G_MASK 0x0000ff00
111#define CSI_TEST_GEN_G_SHIFT 8
112#define CSI_TEST_GEN_B_MASK 0x00ff0000
113#define CSI_TEST_GEN_B_SHIFT 16
114
115#define CSI_MAX_RATIO_SKIP_SMFC_MASK 0x00000007
116#define CSI_MAX_RATIO_SKIP_SMFC_SHIFT 0
117#define CSI_SKIP_SMFC_MASK 0x000000f8
118#define CSI_SKIP_SMFC_SHIFT 3
119#define CSI_ID_2_SKIP_MASK 0x00000300
120#define CSI_ID_2_SKIP_SHIFT 8
121
122#define CSI_COLOR_FIRST_ROW_MASK 0x00000002
123#define CSI_COLOR_FIRST_COMP_MASK 0x00000001
124
125
126#define MIPI_DT_YUV420 0x18
127#define MIPI_DT_YUV420_LEGACY 0x1a
128#define MIPI_DT_YUV422 0x1e
129#define MIPI_DT_RGB444 0x20
130#define MIPI_DT_RGB555 0x21
131#define MIPI_DT_RGB565 0x22
132#define MIPI_DT_RGB666 0x23
133#define MIPI_DT_RGB888 0x24
134#define MIPI_DT_RAW6 0x28
135#define MIPI_DT_RAW7 0x29
136#define MIPI_DT_RAW8 0x2a
137#define MIPI_DT_RAW10 0x2b
138#define MIPI_DT_RAW12 0x2c
139#define MIPI_DT_RAW14 0x2d
140
141
142
143
144struct ipu_csi_bus_config {
145 unsigned data_width:4;
146 unsigned clk_mode:3;
147 unsigned ext_vsync:1;
148 unsigned vsync_pol:1;
149 unsigned hsync_pol:1;
150 unsigned pixclk_pol:1;
151 unsigned data_pol:1;
152 unsigned sens_clksrc:1;
153 unsigned pack_tight:1;
154 unsigned force_eof:1;
155 unsigned data_en_pol:1;
156
157 unsigned data_fmt;
158 unsigned mipi_dt;
159};
160
161
162
163
164enum ipu_csi_data_width {
165 IPU_CSI_DATA_WIDTH_4 = 0,
166 IPU_CSI_DATA_WIDTH_8 = 1,
167 IPU_CSI_DATA_WIDTH_10 = 3,
168 IPU_CSI_DATA_WIDTH_12 = 5,
169 IPU_CSI_DATA_WIDTH_16 = 9,
170};
171
172
173
174
175enum ipu_csi_clk_mode {
176 IPU_CSI_CLK_MODE_GATED_CLK,
177 IPU_CSI_CLK_MODE_NONGATED_CLK,
178 IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE,
179 IPU_CSI_CLK_MODE_CCIR656_INTERLACED,
180 IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR,
181 IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR,
182 IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR,
183 IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR,
184};
185
186static inline u32 ipu_csi_read(struct ipu_csi *csi, unsigned offset)
187{
188 return readl(csi->base + offset);
189}
190
191static inline void ipu_csi_write(struct ipu_csi *csi, u32 value,
192 unsigned offset)
193{
194 writel(value, csi->base + offset);
195}
196
197
198
199
200
201static int ipu_csi_set_testgen_mclk(struct ipu_csi *csi, u32 pixel_clk,
202 u32 ipu_clk)
203{
204 u32 temp;
205 int div_ratio;
206
207 div_ratio = (ipu_clk / pixel_clk) - 1;
208
209 if (div_ratio > 0xFF || div_ratio < 0) {
210 dev_err(csi->ipu->dev,
211 "value of pixel_clk extends normal range\n");
212 return -EINVAL;
213 }
214
215 temp = ipu_csi_read(csi, CSI_SENS_CONF);
216 temp &= ~CSI_SENS_CONF_DIVRATIO_MASK;
217 ipu_csi_write(csi, temp | (div_ratio << CSI_SENS_CONF_DIVRATIO_SHIFT),
218 CSI_SENS_CONF);
219
220 return 0;
221}
222
223
224
225
226
227static int mbus_code_to_bus_cfg(struct ipu_csi_bus_config *cfg, u32 mbus_code,
228 enum v4l2_mbus_type mbus_type)
229{
230 switch (mbus_code) {
231 case MEDIA_BUS_FMT_BGR565_2X8_BE:
232 case MEDIA_BUS_FMT_BGR565_2X8_LE:
233 case MEDIA_BUS_FMT_RGB565_2X8_BE:
234 case MEDIA_BUS_FMT_RGB565_2X8_LE:
235 if (mbus_type == V4L2_MBUS_CSI2)
236 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB565;
237 else
238 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
239 cfg->mipi_dt = MIPI_DT_RGB565;
240 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
241 break;
242 case MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE:
243 case MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE:
244 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB444;
245 cfg->mipi_dt = MIPI_DT_RGB444;
246 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
247 break;
248 case MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE:
249 case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE:
250 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB555;
251 cfg->mipi_dt = MIPI_DT_RGB555;
252 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
253 break;
254 case MEDIA_BUS_FMT_RGB888_1X24:
255 case MEDIA_BUS_FMT_BGR888_1X24:
256 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB_YUV444;
257 cfg->mipi_dt = MIPI_DT_RGB888;
258 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
259 break;
260 case MEDIA_BUS_FMT_UYVY8_2X8:
261 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_UYVY;
262 cfg->mipi_dt = MIPI_DT_YUV422;
263 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
264 break;
265 case MEDIA_BUS_FMT_YUYV8_2X8:
266 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_YUYV;
267 cfg->mipi_dt = MIPI_DT_YUV422;
268 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
269 break;
270 case MEDIA_BUS_FMT_UYVY8_1X16:
271 case MEDIA_BUS_FMT_YUYV8_1X16:
272 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
273 cfg->mipi_dt = MIPI_DT_YUV422;
274 cfg->data_width = IPU_CSI_DATA_WIDTH_16;
275 break;
276 case MEDIA_BUS_FMT_SBGGR8_1X8:
277 case MEDIA_BUS_FMT_SGBRG8_1X8:
278 case MEDIA_BUS_FMT_SGRBG8_1X8:
279 case MEDIA_BUS_FMT_SRGGB8_1X8:
280 case MEDIA_BUS_FMT_Y8_1X8:
281 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
282 cfg->mipi_dt = MIPI_DT_RAW8;
283 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
284 break;
285 case MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8:
286 case MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8:
287 case MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8:
288 case MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8:
289 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE:
290 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE:
291 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE:
292 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE:
293 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
294 cfg->mipi_dt = MIPI_DT_RAW10;
295 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
296 break;
297 case MEDIA_BUS_FMT_SBGGR10_1X10:
298 case MEDIA_BUS_FMT_SGBRG10_1X10:
299 case MEDIA_BUS_FMT_SGRBG10_1X10:
300 case MEDIA_BUS_FMT_SRGGB10_1X10:
301 case MEDIA_BUS_FMT_Y10_1X10:
302 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
303 cfg->mipi_dt = MIPI_DT_RAW10;
304 cfg->data_width = IPU_CSI_DATA_WIDTH_10;
305 break;
306 case MEDIA_BUS_FMT_SBGGR12_1X12:
307 case MEDIA_BUS_FMT_SGBRG12_1X12:
308 case MEDIA_BUS_FMT_SGRBG12_1X12:
309 case MEDIA_BUS_FMT_SRGGB12_1X12:
310 case MEDIA_BUS_FMT_Y12_1X12:
311 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
312 cfg->mipi_dt = MIPI_DT_RAW12;
313 cfg->data_width = IPU_CSI_DATA_WIDTH_12;
314 break;
315 case MEDIA_BUS_FMT_JPEG_1X8:
316
317 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_JPEG;
318 cfg->mipi_dt = MIPI_DT_RAW8;
319 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
320 break;
321 default:
322 return -EINVAL;
323 }
324
325 return 0;
326}
327
328
329
330
331static int fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
332 struct v4l2_mbus_config *mbus_cfg,
333 struct v4l2_mbus_framefmt *mbus_fmt)
334{
335 int ret;
336
337 memset(csicfg, 0, sizeof(*csicfg));
338
339 ret = mbus_code_to_bus_cfg(csicfg, mbus_fmt->code, mbus_cfg->type);
340 if (ret < 0)
341 return ret;
342
343 switch (mbus_cfg->type) {
344 case V4L2_MBUS_PARALLEL:
345 csicfg->ext_vsync = 1;
346 csicfg->vsync_pol = (mbus_cfg->flags &
347 V4L2_MBUS_VSYNC_ACTIVE_LOW) ? 1 : 0;
348 csicfg->hsync_pol = (mbus_cfg->flags &
349 V4L2_MBUS_HSYNC_ACTIVE_LOW) ? 1 : 0;
350 csicfg->pixclk_pol = (mbus_cfg->flags &
351 V4L2_MBUS_PCLK_SAMPLE_FALLING) ? 1 : 0;
352 csicfg->clk_mode = IPU_CSI_CLK_MODE_GATED_CLK;
353 break;
354 case V4L2_MBUS_BT656:
355 csicfg->ext_vsync = 0;
356 if (V4L2_FIELD_HAS_BOTH(mbus_fmt->field) ||
357 mbus_fmt->field == V4L2_FIELD_ALTERNATE)
358 csicfg->clk_mode = IPU_CSI_CLK_MODE_CCIR656_INTERLACED;
359 else
360 csicfg->clk_mode = IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE;
361 break;
362 case V4L2_MBUS_CSI2:
363
364
365
366
367 csicfg->clk_mode = IPU_CSI_CLK_MODE_NONGATED_CLK;
368 break;
369 default:
370
371 break;
372 }
373
374 return 0;
375}
376
377int ipu_csi_init_interface(struct ipu_csi *csi,
378 struct v4l2_mbus_config *mbus_cfg,
379 struct v4l2_mbus_framefmt *mbus_fmt)
380{
381 struct ipu_csi_bus_config cfg;
382 unsigned long flags;
383 u32 width, height, data = 0;
384 int ret;
385
386 ret = fill_csi_bus_cfg(&cfg, mbus_cfg, mbus_fmt);
387 if (ret < 0)
388 return ret;
389
390
391 width = mbus_fmt->width;
392 height = mbus_fmt->height;
393
394
395 data |= cfg.data_width << CSI_SENS_CONF_DATA_WIDTH_SHIFT |
396 cfg.data_fmt << CSI_SENS_CONF_DATA_FMT_SHIFT |
397 cfg.data_pol << CSI_SENS_CONF_DATA_POL_SHIFT |
398 cfg.vsync_pol << CSI_SENS_CONF_VSYNC_POL_SHIFT |
399 cfg.hsync_pol << CSI_SENS_CONF_HSYNC_POL_SHIFT |
400 cfg.pixclk_pol << CSI_SENS_CONF_PIX_CLK_POL_SHIFT |
401 cfg.ext_vsync << CSI_SENS_CONF_EXT_VSYNC_SHIFT |
402 cfg.clk_mode << CSI_SENS_CONF_SENS_PRTCL_SHIFT |
403 cfg.pack_tight << CSI_SENS_CONF_PACK_TIGHT_SHIFT |
404 cfg.force_eof << CSI_SENS_CONF_FORCE_EOF_SHIFT |
405 cfg.data_en_pol << CSI_SENS_CONF_DATA_EN_POL_SHIFT;
406
407 spin_lock_irqsave(&csi->lock, flags);
408
409 ipu_csi_write(csi, data, CSI_SENS_CONF);
410
411
412
413 switch (cfg.clk_mode) {
414 case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE:
415 ipu_csi_write(csi, 0x40030, CSI_CCIR_CODE_1);
416 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
417 break;
418 case IPU_CSI_CLK_MODE_CCIR656_INTERLACED:
419 if (mbus_fmt->width == 720 && mbus_fmt->height == 576) {
420
421
422
423
424
425
426
427
428 height = 625;
429
430 ipu_csi_write(csi, 0x40596 | CSI_CCIR_ERR_DET_EN,
431 CSI_CCIR_CODE_1);
432 ipu_csi_write(csi, 0xD07DF, CSI_CCIR_CODE_2);
433 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
434 } else if (mbus_fmt->width == 720 && mbus_fmt->height == 480) {
435
436
437
438
439
440
441
442
443 height = 525;
444
445 ipu_csi_write(csi, 0xD07DF | CSI_CCIR_ERR_DET_EN,
446 CSI_CCIR_CODE_1);
447 ipu_csi_write(csi, 0x40596, CSI_CCIR_CODE_2);
448 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
449 } else {
450 dev_err(csi->ipu->dev,
451 "Unsupported CCIR656 interlaced video mode\n");
452 spin_unlock_irqrestore(&csi->lock, flags);
453 return -EINVAL;
454 }
455 break;
456 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR:
457 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR:
458 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR:
459 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR:
460 ipu_csi_write(csi, 0x40030 | CSI_CCIR_ERR_DET_EN,
461 CSI_CCIR_CODE_1);
462 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
463 break;
464 case IPU_CSI_CLK_MODE_GATED_CLK:
465 case IPU_CSI_CLK_MODE_NONGATED_CLK:
466 ipu_csi_write(csi, 0, CSI_CCIR_CODE_1);
467 break;
468 }
469
470
471 ipu_csi_write(csi, (width - 1) | ((height - 1) << 16),
472 CSI_SENS_FRM_SIZE);
473
474 dev_dbg(csi->ipu->dev, "CSI_SENS_CONF = 0x%08X\n",
475 ipu_csi_read(csi, CSI_SENS_CONF));
476 dev_dbg(csi->ipu->dev, "CSI_ACT_FRM_SIZE = 0x%08X\n",
477 ipu_csi_read(csi, CSI_ACT_FRM_SIZE));
478
479 spin_unlock_irqrestore(&csi->lock, flags);
480
481 return 0;
482}
483EXPORT_SYMBOL_GPL(ipu_csi_init_interface);
484
485bool ipu_csi_is_interlaced(struct ipu_csi *csi)
486{
487 unsigned long flags;
488 u32 sensor_protocol;
489
490 spin_lock_irqsave(&csi->lock, flags);
491 sensor_protocol =
492 (ipu_csi_read(csi, CSI_SENS_CONF) &
493 CSI_SENS_CONF_SENS_PRTCL_MASK) >>
494 CSI_SENS_CONF_SENS_PRTCL_SHIFT;
495 spin_unlock_irqrestore(&csi->lock, flags);
496
497 switch (sensor_protocol) {
498 case IPU_CSI_CLK_MODE_GATED_CLK:
499 case IPU_CSI_CLK_MODE_NONGATED_CLK:
500 case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE:
501 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR:
502 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR:
503 return false;
504 case IPU_CSI_CLK_MODE_CCIR656_INTERLACED:
505 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR:
506 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR:
507 return true;
508 default:
509 dev_err(csi->ipu->dev,
510 "CSI %d sensor protocol unsupported\n", csi->id);
511 return false;
512 }
513}
514EXPORT_SYMBOL_GPL(ipu_csi_is_interlaced);
515
516void ipu_csi_get_window(struct ipu_csi *csi, struct v4l2_rect *w)
517{
518 unsigned long flags;
519 u32 reg;
520
521 spin_lock_irqsave(&csi->lock, flags);
522
523 reg = ipu_csi_read(csi, CSI_ACT_FRM_SIZE);
524 w->width = (reg & 0xFFFF) + 1;
525 w->height = (reg >> 16 & 0xFFFF) + 1;
526
527 reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL);
528 w->left = (reg & CSI_HSC_MASK) >> CSI_HSC_SHIFT;
529 w->top = (reg & CSI_VSC_MASK) >> CSI_VSC_SHIFT;
530
531 spin_unlock_irqrestore(&csi->lock, flags);
532}
533EXPORT_SYMBOL_GPL(ipu_csi_get_window);
534
535void ipu_csi_set_window(struct ipu_csi *csi, struct v4l2_rect *w)
536{
537 unsigned long flags;
538 u32 reg;
539
540 spin_lock_irqsave(&csi->lock, flags);
541
542 ipu_csi_write(csi, (w->width - 1) | ((w->height - 1) << 16),
543 CSI_ACT_FRM_SIZE);
544
545 reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL);
546 reg &= ~(CSI_HSC_MASK | CSI_VSC_MASK);
547 reg |= ((w->top << CSI_VSC_SHIFT) | (w->left << CSI_HSC_SHIFT));
548 ipu_csi_write(csi, reg, CSI_OUT_FRM_CTRL);
549
550 spin_unlock_irqrestore(&csi->lock, flags);
551}
552EXPORT_SYMBOL_GPL(ipu_csi_set_window);
553
554void ipu_csi_set_downsize(struct ipu_csi *csi, bool horiz, bool vert)
555{
556 unsigned long flags;
557 u32 reg;
558
559 spin_lock_irqsave(&csi->lock, flags);
560
561 reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL);
562 reg &= ~(CSI_HORI_DOWNSIZE_EN | CSI_VERT_DOWNSIZE_EN);
563 reg |= (horiz ? CSI_HORI_DOWNSIZE_EN : 0) |
564 (vert ? CSI_VERT_DOWNSIZE_EN : 0);
565 ipu_csi_write(csi, reg, CSI_OUT_FRM_CTRL);
566
567 spin_unlock_irqrestore(&csi->lock, flags);
568}
569EXPORT_SYMBOL_GPL(ipu_csi_set_downsize);
570
571void ipu_csi_set_test_generator(struct ipu_csi *csi, bool active,
572 u32 r_value, u32 g_value, u32 b_value,
573 u32 pix_clk)
574{
575 unsigned long flags;
576 u32 ipu_clk = clk_get_rate(csi->clk_ipu);
577 u32 temp;
578
579 spin_lock_irqsave(&csi->lock, flags);
580
581 temp = ipu_csi_read(csi, CSI_TST_CTRL);
582
583 if (!active) {
584 temp &= ~CSI_TEST_GEN_MODE_EN;
585 ipu_csi_write(csi, temp, CSI_TST_CTRL);
586 } else {
587
588 ipu_csi_set_testgen_mclk(csi, pix_clk, ipu_clk);
589
590 temp &= ~(CSI_TEST_GEN_R_MASK | CSI_TEST_GEN_G_MASK |
591 CSI_TEST_GEN_B_MASK);
592 temp |= CSI_TEST_GEN_MODE_EN;
593 temp |= (r_value << CSI_TEST_GEN_R_SHIFT) |
594 (g_value << CSI_TEST_GEN_G_SHIFT) |
595 (b_value << CSI_TEST_GEN_B_SHIFT);
596 ipu_csi_write(csi, temp, CSI_TST_CTRL);
597 }
598
599 spin_unlock_irqrestore(&csi->lock, flags);
600}
601EXPORT_SYMBOL_GPL(ipu_csi_set_test_generator);
602
603int ipu_csi_set_mipi_datatype(struct ipu_csi *csi, u32 vc,
604 struct v4l2_mbus_framefmt *mbus_fmt)
605{
606 struct ipu_csi_bus_config cfg;
607 unsigned long flags;
608 u32 temp;
609 int ret;
610
611 if (vc > 3)
612 return -EINVAL;
613
614 ret = mbus_code_to_bus_cfg(&cfg, mbus_fmt->code, V4L2_MBUS_CSI2);
615 if (ret < 0)
616 return ret;
617
618 spin_lock_irqsave(&csi->lock, flags);
619
620 temp = ipu_csi_read(csi, CSI_MIPI_DI);
621 temp &= ~(0xff << (vc * 8));
622 temp |= (cfg.mipi_dt << (vc * 8));
623 ipu_csi_write(csi, temp, CSI_MIPI_DI);
624
625 spin_unlock_irqrestore(&csi->lock, flags);
626
627 return 0;
628}
629EXPORT_SYMBOL_GPL(ipu_csi_set_mipi_datatype);
630
631int ipu_csi_set_skip_smfc(struct ipu_csi *csi, u32 skip,
632 u32 max_ratio, u32 id)
633{
634 unsigned long flags;
635 u32 temp;
636
637 if (max_ratio > 5 || id > 3)
638 return -EINVAL;
639
640 spin_lock_irqsave(&csi->lock, flags);
641
642 temp = ipu_csi_read(csi, CSI_SKIP);
643 temp &= ~(CSI_MAX_RATIO_SKIP_SMFC_MASK | CSI_ID_2_SKIP_MASK |
644 CSI_SKIP_SMFC_MASK);
645 temp |= (max_ratio << CSI_MAX_RATIO_SKIP_SMFC_SHIFT) |
646 (id << CSI_ID_2_SKIP_SHIFT) |
647 (skip << CSI_SKIP_SMFC_SHIFT);
648 ipu_csi_write(csi, temp, CSI_SKIP);
649
650 spin_unlock_irqrestore(&csi->lock, flags);
651
652 return 0;
653}
654EXPORT_SYMBOL_GPL(ipu_csi_set_skip_smfc);
655
656int ipu_csi_set_dest(struct ipu_csi *csi, enum ipu_csi_dest csi_dest)
657{
658 unsigned long flags;
659 u32 csi_sens_conf, dest;
660
661 if (csi_dest == IPU_CSI_DEST_IDMAC)
662 dest = CSI_DATA_DEST_IDMAC;
663 else
664 dest = CSI_DATA_DEST_IC;
665
666 spin_lock_irqsave(&csi->lock, flags);
667
668 csi_sens_conf = ipu_csi_read(csi, CSI_SENS_CONF);
669 csi_sens_conf &= ~CSI_SENS_CONF_DATA_DEST_MASK;
670 csi_sens_conf |= (dest << CSI_SENS_CONF_DATA_DEST_SHIFT);
671 ipu_csi_write(csi, csi_sens_conf, CSI_SENS_CONF);
672
673 spin_unlock_irqrestore(&csi->lock, flags);
674
675 return 0;
676}
677EXPORT_SYMBOL_GPL(ipu_csi_set_dest);
678
679int ipu_csi_enable(struct ipu_csi *csi)
680{
681 ipu_module_enable(csi->ipu, csi->module);
682
683 return 0;
684}
685EXPORT_SYMBOL_GPL(ipu_csi_enable);
686
687int ipu_csi_disable(struct ipu_csi *csi)
688{
689 ipu_module_disable(csi->ipu, csi->module);
690
691 return 0;
692}
693EXPORT_SYMBOL_GPL(ipu_csi_disable);
694
695struct ipu_csi *ipu_csi_get(struct ipu_soc *ipu, int id)
696{
697 unsigned long flags;
698 struct ipu_csi *csi, *ret;
699
700 if (id > 1)
701 return ERR_PTR(-EINVAL);
702
703 csi = ipu->csi_priv[id];
704 ret = csi;
705
706 spin_lock_irqsave(&csi->lock, flags);
707
708 if (csi->inuse) {
709 ret = ERR_PTR(-EBUSY);
710 goto unlock;
711 }
712
713 csi->inuse = true;
714unlock:
715 spin_unlock_irqrestore(&csi->lock, flags);
716 return ret;
717}
718EXPORT_SYMBOL_GPL(ipu_csi_get);
719
720void ipu_csi_put(struct ipu_csi *csi)
721{
722 unsigned long flags;
723
724 spin_lock_irqsave(&csi->lock, flags);
725 csi->inuse = false;
726 spin_unlock_irqrestore(&csi->lock, flags);
727}
728EXPORT_SYMBOL_GPL(ipu_csi_put);
729
730int ipu_csi_init(struct ipu_soc *ipu, struct device *dev, int id,
731 unsigned long base, u32 module, struct clk *clk_ipu)
732{
733 struct ipu_csi *csi;
734
735 if (id > 1)
736 return -ENODEV;
737
738 csi = devm_kzalloc(dev, sizeof(*csi), GFP_KERNEL);
739 if (!csi)
740 return -ENOMEM;
741
742 ipu->csi_priv[id] = csi;
743
744 spin_lock_init(&csi->lock);
745 csi->module = module;
746 csi->id = id;
747 csi->clk_ipu = clk_ipu;
748 csi->base = devm_ioremap(dev, base, PAGE_SIZE);
749 if (!csi->base)
750 return -ENOMEM;
751
752 dev_dbg(dev, "CSI%d base: 0x%08lx remapped to %p\n",
753 id, base, csi->base);
754 csi->ipu = ipu;
755
756 return 0;
757}
758
759void ipu_csi_exit(struct ipu_soc *ipu, int id)
760{
761}
762
763void ipu_csi_dump(struct ipu_csi *csi)
764{
765 dev_dbg(csi->ipu->dev, "CSI_SENS_CONF: %08x\n",
766 ipu_csi_read(csi, CSI_SENS_CONF));
767 dev_dbg(csi->ipu->dev, "CSI_SENS_FRM_SIZE: %08x\n",
768 ipu_csi_read(csi, CSI_SENS_FRM_SIZE));
769 dev_dbg(csi->ipu->dev, "CSI_ACT_FRM_SIZE: %08x\n",
770 ipu_csi_read(csi, CSI_ACT_FRM_SIZE));
771 dev_dbg(csi->ipu->dev, "CSI_OUT_FRM_CTRL: %08x\n",
772 ipu_csi_read(csi, CSI_OUT_FRM_CTRL));
773 dev_dbg(csi->ipu->dev, "CSI_TST_CTRL: %08x\n",
774 ipu_csi_read(csi, CSI_TST_CTRL));
775 dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_1: %08x\n",
776 ipu_csi_read(csi, CSI_CCIR_CODE_1));
777 dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_2: %08x\n",
778 ipu_csi_read(csi, CSI_CCIR_CODE_2));
779 dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_3: %08x\n",
780 ipu_csi_read(csi, CSI_CCIR_CODE_3));
781 dev_dbg(csi->ipu->dev, "CSI_MIPI_DI: %08x\n",
782 ipu_csi_read(csi, CSI_MIPI_DI));
783 dev_dbg(csi->ipu->dev, "CSI_SKIP: %08x\n",
784 ipu_csi_read(csi, CSI_SKIP));
785}
786EXPORT_SYMBOL_GPL(ipu_csi_dump);
787
