1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2012-2014 Mentor Graphics Inc.
4 * Copyright (C) 2005-2009 Freescale Semiconductor, Inc.
5 */
6 #include <linux/export.h>
7 #include <linux/module.h>
8 #include <linux/types.h>
9 #include <linux/errno.h>
10 #include <linux/delay.h>
11 #include <linux/io.h>
12 #include <linux/err.h>
13 #include <linux/platform_device.h>
14 #include <linux/videodev2.h>
15 #include <uapi/linux/v4l2-mediabus.h>
16 #include <linux/clk.h>
17 #include <linux/clk-provider.h>
18 #include <linux/clkdev.h>
19
20 #include "ipu-prv.h"
21
22 struct ipu_csi {
23 void __iomem *base;
24 int id;
25 u32 module;
26 struct clk *clk_ipu; /* IPU bus clock */
27 spinlock_t lock;
28 bool inuse;
29 struct ipu_soc *ipu;
30 };
31
32 /* CSI Register Offsets */
33 #define CSI_SENS_CONF 0x0000
34 #define CSI_SENS_FRM_SIZE 0x0004
35 #define CSI_ACT_FRM_SIZE 0x0008
36 #define CSI_OUT_FRM_CTRL 0x000c
37 #define CSI_TST_CTRL 0x0010
38 #define CSI_CCIR_CODE_1 0x0014
39 #define CSI_CCIR_CODE_2 0x0018
40 #define CSI_CCIR_CODE_3 0x001c
41 #define CSI_MIPI_DI 0x0020
42 #define CSI_SKIP 0x0024
43 #define CSI_CPD_CTRL 0x0028
44 #define CSI_CPD_RC(n) (0x002c + ((n)*4))
45 #define CSI_CPD_RS(n) (0x004c + ((n)*4))
46 #define CSI_CPD_GRC(n) (0x005c + ((n)*4))
47 #define CSI_CPD_GRS(n) (0x007c + ((n)*4))
48 #define CSI_CPD_GBC(n) (0x008c + ((n)*4))
49 #define CSI_CPD_GBS(n) (0x00Ac + ((n)*4))
50 #define CSI_CPD_BC(n) (0x00Bc + ((n)*4))
51 #define CSI_CPD_BS(n) (0x00Dc + ((n)*4))
52 #define CSI_CPD_OFFSET1 0x00ec
53 #define CSI_CPD_OFFSET2 0x00f0
54
55 /* CSI Register Fields */
56 #define CSI_SENS_CONF_DATA_FMT_SHIFT 8
57 #define CSI_SENS_CONF_DATA_FMT_MASK 0x00000700
58 #define CSI_SENS_CONF_DATA_FMT_RGB_YUV444 0L
59 #define CSI_SENS_CONF_DATA_FMT_YUV422_YUYV 1L
60 #define CSI_SENS_CONF_DATA_FMT_YUV422_UYVY 2L
61 #define CSI_SENS_CONF_DATA_FMT_BAYER 3L
62 #define CSI_SENS_CONF_DATA_FMT_RGB565 4L
63 #define CSI_SENS_CONF_DATA_FMT_RGB555 5L
64 #define CSI_SENS_CONF_DATA_FMT_RGB444 6L
65 #define CSI_SENS_CONF_DATA_FMT_JPEG 7L
66
67 #define CSI_SENS_CONF_VSYNC_POL_SHIFT 0
68 #define CSI_SENS_CONF_HSYNC_POL_SHIFT 1
69 #define CSI_SENS_CONF_DATA_POL_SHIFT 2
70 #define CSI_SENS_CONF_PIX_CLK_POL_SHIFT 3
71 #define CSI_SENS_CONF_SENS_PRTCL_MASK 0x00000070
72 #define CSI_SENS_CONF_SENS_PRTCL_SHIFT 4
73 #define CSI_SENS_CONF_PACK_TIGHT_SHIFT 7
74 #define CSI_SENS_CONF_DATA_WIDTH_SHIFT 11
75 #define CSI_SENS_CONF_EXT_VSYNC_SHIFT 15
76 #define CSI_SENS_CONF_DIVRATIO_SHIFT 16
77
78 #define CSI_SENS_CONF_DIVRATIO_MASK 0x00ff0000
79 #define CSI_SENS_CONF_DATA_DEST_SHIFT 24
80 #define CSI_SENS_CONF_DATA_DEST_MASK 0x07000000
81 #define CSI_SENS_CONF_JPEG8_EN_SHIFT 27
82 #define CSI_SENS_CONF_JPEG_EN_SHIFT 28
83 #define CSI_SENS_CONF_FORCE_EOF_SHIFT 29
84 #define CSI_SENS_CONF_DATA_EN_POL_SHIFT 31
85
86 #define CSI_DATA_DEST_IC 2
87 #define CSI_DATA_DEST_IDMAC 4
88
89 #define CSI_CCIR_ERR_DET_EN 0x01000000
90 #define CSI_HORI_DOWNSIZE_EN 0x80000000
91 #define CSI_VERT_DOWNSIZE_EN 0x40000000
92 #define CSI_TEST_GEN_MODE_EN 0x01000000
93
94 #define CSI_HSC_MASK 0x1fff0000
95 #define CSI_HSC_SHIFT 16
96 #define CSI_VSC_MASK 0x00000fff
97 #define CSI_VSC_SHIFT 0
98
99 #define CSI_TEST_GEN_R_MASK 0x000000ff
100 #define CSI_TEST_GEN_R_SHIFT 0
101 #define CSI_TEST_GEN_G_MASK 0x0000ff00
102 #define CSI_TEST_GEN_G_SHIFT 8
103 #define CSI_TEST_GEN_B_MASK 0x00ff0000
104 #define CSI_TEST_GEN_B_SHIFT 16
105
106 #define CSI_MAX_RATIO_SKIP_SMFC_MASK 0x00000007
107 #define CSI_MAX_RATIO_SKIP_SMFC_SHIFT 0
108 #define CSI_SKIP_SMFC_MASK 0x000000f8
109 #define CSI_SKIP_SMFC_SHIFT 3
110 #define CSI_ID_2_SKIP_MASK 0x00000300
111 #define CSI_ID_2_SKIP_SHIFT 8
112
113 #define CSI_COLOR_FIRST_ROW_MASK 0x00000002
114 #define CSI_COLOR_FIRST_COMP_MASK 0x00000001
115
116 /* MIPI CSI-2 data types */
117 #define MIPI_DT_YUV420 0x18 /* YYY.../UYVY.... */
118 #define MIPI_DT_YUV420_LEGACY 0x1a /* UYY.../VYY... */
119 #define MIPI_DT_YUV422 0x1e /* UYVY... */
120 #define MIPI_DT_RGB444 0x20
121 #define MIPI_DT_RGB555 0x21
122 #define MIPI_DT_RGB565 0x22
123 #define MIPI_DT_RGB666 0x23
124 #define MIPI_DT_RGB888 0x24
125 #define MIPI_DT_RAW6 0x28
126 #define MIPI_DT_RAW7 0x29
127 #define MIPI_DT_RAW8 0x2a
128 #define MIPI_DT_RAW10 0x2b
129 #define MIPI_DT_RAW12 0x2c
130 #define MIPI_DT_RAW14 0x2d
131
132 /*
133 * Bitfield of CSI bus signal polarities and modes.
134 */
135 struct ipu_csi_bus_config {
136 unsigned data_width:4;
137 unsigned clk_mode:3;
138 unsigned ext_vsync:1;
139 unsigned vsync_pol:1;
140 unsigned hsync_pol:1;
141 unsigned pixclk_pol:1;
142 unsigned data_pol:1;
143 unsigned sens_clksrc:1;
144 unsigned pack_tight:1;
145 unsigned force_eof:1;
146 unsigned data_en_pol:1;
147
148 unsigned data_fmt;
149 unsigned mipi_dt;
150 };
151
152 /*
153 * Enumeration of CSI data bus widths.
154 */
155 enum ipu_csi_data_width {
156 IPU_CSI_DATA_WIDTH_4 = 0,
157 IPU_CSI_DATA_WIDTH_8 = 1,
158 IPU_CSI_DATA_WIDTH_10 = 3,
159 IPU_CSI_DATA_WIDTH_12 = 5,
160 IPU_CSI_DATA_WIDTH_16 = 9,
161 };
162
163 /*
164 * Enumeration of CSI clock modes.
165 */
166 enum ipu_csi_clk_mode {
167 IPU_CSI_CLK_MODE_GATED_CLK,
168 IPU_CSI_CLK_MODE_NONGATED_CLK,
169 IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE,
170 IPU_CSI_CLK_MODE_CCIR656_INTERLACED,
171 IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR,
172 IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR,
173 IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR,
174 IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR,
175 };
176
ipu_csi_read(struct ipu_csi * csi,unsigned offset)177 static inline u32 ipu_csi_read(struct ipu_csi *csi, unsigned offset)
178 {
179 return readl(csi->base + offset);
180 }
181
ipu_csi_write(struct ipu_csi * csi,u32 value,unsigned offset)182 static inline void ipu_csi_write(struct ipu_csi *csi, u32 value,
183 unsigned offset)
184 {
185 writel(value, csi->base + offset);
186 }
187
188 /*
189 * Set mclk division ratio for generating test mode mclk. Only used
190 * for test generator.
191 */
ipu_csi_set_testgen_mclk(struct ipu_csi * csi,u32 pixel_clk,u32 ipu_clk)192 static int ipu_csi_set_testgen_mclk(struct ipu_csi *csi, u32 pixel_clk,
193 u32 ipu_clk)
194 {
195 u32 temp;
196 int div_ratio;
197
198 div_ratio = (ipu_clk / pixel_clk) - 1;
199
200 if (div_ratio > 0xFF || div_ratio < 0) {
201 dev_err(csi->ipu->dev,
202 "value of pixel_clk extends normal range\n");
203 return -EINVAL;
204 }
205
206 temp = ipu_csi_read(csi, CSI_SENS_CONF);
207 temp &= ~CSI_SENS_CONF_DIVRATIO_MASK;
208 ipu_csi_write(csi, temp | (div_ratio << CSI_SENS_CONF_DIVRATIO_SHIFT),
209 CSI_SENS_CONF);
210
211 return 0;
212 }
213
214 /*
215 * Find the CSI data format and data width for the given V4L2 media
216 * bus pixel format code.
217 */
mbus_code_to_bus_cfg(struct ipu_csi_bus_config * cfg,u32 mbus_code,enum v4l2_mbus_type mbus_type)218 static int mbus_code_to_bus_cfg(struct ipu_csi_bus_config *cfg, u32 mbus_code,
219 enum v4l2_mbus_type mbus_type)
220 {
221 switch (mbus_code) {
222 case MEDIA_BUS_FMT_BGR565_2X8_BE:
223 case MEDIA_BUS_FMT_BGR565_2X8_LE:
224 case MEDIA_BUS_FMT_RGB565_2X8_BE:
225 case MEDIA_BUS_FMT_RGB565_2X8_LE:
226 if (mbus_type == V4L2_MBUS_CSI2_DPHY)
227 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB565;
228 else
229 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
230 cfg->mipi_dt = MIPI_DT_RGB565;
231 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
232 break;
233 case MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE:
234 case MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE:
235 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB444;
236 cfg->mipi_dt = MIPI_DT_RGB444;
237 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
238 break;
239 case MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE:
240 case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE:
241 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB555;
242 cfg->mipi_dt = MIPI_DT_RGB555;
243 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
244 break;
245 case MEDIA_BUS_FMT_RGB888_1X24:
246 case MEDIA_BUS_FMT_BGR888_1X24:
247 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB_YUV444;
248 cfg->mipi_dt = MIPI_DT_RGB888;
249 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
250 break;
251 case MEDIA_BUS_FMT_UYVY8_2X8:
252 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_UYVY;
253 cfg->mipi_dt = MIPI_DT_YUV422;
254 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
255 break;
256 case MEDIA_BUS_FMT_YUYV8_2X8:
257 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_YUYV;
258 cfg->mipi_dt = MIPI_DT_YUV422;
259 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
260 break;
261 case MEDIA_BUS_FMT_UYVY8_1X16:
262 case MEDIA_BUS_FMT_YUYV8_1X16:
263 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
264 cfg->mipi_dt = MIPI_DT_YUV422;
265 cfg->data_width = IPU_CSI_DATA_WIDTH_16;
266 break;
267 case MEDIA_BUS_FMT_SBGGR8_1X8:
268 case MEDIA_BUS_FMT_SGBRG8_1X8:
269 case MEDIA_BUS_FMT_SGRBG8_1X8:
270 case MEDIA_BUS_FMT_SRGGB8_1X8:
271 case MEDIA_BUS_FMT_Y8_1X8:
272 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
273 cfg->mipi_dt = MIPI_DT_RAW8;
274 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
275 break;
276 case MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8:
277 case MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8:
278 case MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8:
279 case MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8:
280 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE:
281 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE:
282 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE:
283 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE:
284 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
285 cfg->mipi_dt = MIPI_DT_RAW10;
286 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
287 break;
288 case MEDIA_BUS_FMT_SBGGR10_1X10:
289 case MEDIA_BUS_FMT_SGBRG10_1X10:
290 case MEDIA_BUS_FMT_SGRBG10_1X10:
291 case MEDIA_BUS_FMT_SRGGB10_1X10:
292 case MEDIA_BUS_FMT_Y10_1X10:
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_10;
296 break;
297 case MEDIA_BUS_FMT_SBGGR12_1X12:
298 case MEDIA_BUS_FMT_SGBRG12_1X12:
299 case MEDIA_BUS_FMT_SGRBG12_1X12:
300 case MEDIA_BUS_FMT_SRGGB12_1X12:
301 case MEDIA_BUS_FMT_Y12_1X12:
302 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
303 cfg->mipi_dt = MIPI_DT_RAW12;
304 cfg->data_width = IPU_CSI_DATA_WIDTH_12;
305 break;
306 case MEDIA_BUS_FMT_JPEG_1X8:
307 /* TODO */
308 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_JPEG;
309 cfg->mipi_dt = MIPI_DT_RAW8;
310 cfg->data_width = IPU_CSI_DATA_WIDTH_8;
311 break;
312 default:
313 return -EINVAL;
314 }
315
316 return 0;
317 }
318
319 /* translate alternate field mode based on given standard */
320 static inline enum v4l2_field
ipu_csi_translate_field(enum v4l2_field field,v4l2_std_id std)321 ipu_csi_translate_field(enum v4l2_field field, v4l2_std_id std)
322 {
323 return (field != V4L2_FIELD_ALTERNATE) ? field :
324 ((std & V4L2_STD_525_60) ?
325 V4L2_FIELD_SEQ_BT : V4L2_FIELD_SEQ_TB);
326 }
327
328 /*
329 * Fill a CSI bus config struct from mbus_config and mbus_framefmt.
330 */
fill_csi_bus_cfg(struct ipu_csi_bus_config * csicfg,const struct v4l2_mbus_config * mbus_cfg,const struct v4l2_mbus_framefmt * mbus_fmt)331 static int fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
332 const struct v4l2_mbus_config *mbus_cfg,
333 const 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_DPHY:
363 /*
364 * MIPI CSI-2 requires non gated clock mode, all other
365 * parameters are not applicable for MIPI CSI-2 bus.
366 */
367 csicfg->clk_mode = IPU_CSI_CLK_MODE_NONGATED_CLK;
368 break;
369 default:
370 /* will never get here, keep compiler quiet */
371 break;
372 }
373
374 return 0;
375 }
376
377 static int
ipu_csi_set_bt_interlaced_codes(struct ipu_csi * csi,const struct v4l2_mbus_framefmt * infmt,const struct v4l2_mbus_framefmt * outfmt,v4l2_std_id std)378 ipu_csi_set_bt_interlaced_codes(struct ipu_csi *csi,
379 const struct v4l2_mbus_framefmt *infmt,
380 const struct v4l2_mbus_framefmt *outfmt,
381 v4l2_std_id std)
382 {
383 enum v4l2_field infield, outfield;
384 bool swap_fields;
385
386 /* get translated field type of input and output */
387 infield = ipu_csi_translate_field(infmt->field, std);
388 outfield = ipu_csi_translate_field(outfmt->field, std);
389
390 /*
391 * Write the H-V-F codes the CSI will match against the
392 * incoming data for start/end of active and blanking
393 * field intervals. If input and output field types are
394 * sequential but not the same (one is SEQ_BT and the other
395 * is SEQ_TB), swap the F-bit so that the CSI will capture
396 * field 1 lines before field 0 lines.
397 */
398 swap_fields = (V4L2_FIELD_IS_SEQUENTIAL(infield) &&
399 V4L2_FIELD_IS_SEQUENTIAL(outfield) &&
400 infield != outfield);
401
402 if (!swap_fields) {
403 /*
404 * Field0BlankEnd = 110, Field0BlankStart = 010
405 * Field0ActiveEnd = 100, Field0ActiveStart = 000
406 * Field1BlankEnd = 111, Field1BlankStart = 011
407 * Field1ActiveEnd = 101, Field1ActiveStart = 001
408 */
409 ipu_csi_write(csi, 0x40596 | CSI_CCIR_ERR_DET_EN,
410 CSI_CCIR_CODE_1);
411 ipu_csi_write(csi, 0xD07DF, CSI_CCIR_CODE_2);
412 } else {
413 dev_dbg(csi->ipu->dev, "capture field swap\n");
414
415 /* same as above but with F-bit inverted */
416 ipu_csi_write(csi, 0xD07DF | CSI_CCIR_ERR_DET_EN,
417 CSI_CCIR_CODE_1);
418 ipu_csi_write(csi, 0x40596, CSI_CCIR_CODE_2);
419 }
420
421 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
422
423 return 0;
424 }
425
426
ipu_csi_init_interface(struct ipu_csi * csi,const struct v4l2_mbus_config * mbus_cfg,const struct v4l2_mbus_framefmt * infmt,const struct v4l2_mbus_framefmt * outfmt)427 int ipu_csi_init_interface(struct ipu_csi *csi,
428 const struct v4l2_mbus_config *mbus_cfg,
429 const struct v4l2_mbus_framefmt *infmt,
430 const struct v4l2_mbus_framefmt *outfmt)
431 {
432 struct ipu_csi_bus_config cfg;
433 unsigned long flags;
434 u32 width, height, data = 0;
435 v4l2_std_id std;
436 int ret;
437
438 ret = fill_csi_bus_cfg(&cfg, mbus_cfg, infmt);
439 if (ret < 0)
440 return ret;
441
442 /* set default sensor frame width and height */
443 width = infmt->width;
444 height = infmt->height;
445 if (infmt->field == V4L2_FIELD_ALTERNATE)
446 height *= 2;
447
448 /* Set the CSI_SENS_CONF register remaining fields */
449 data |= cfg.data_width << CSI_SENS_CONF_DATA_WIDTH_SHIFT |
450 cfg.data_fmt << CSI_SENS_CONF_DATA_FMT_SHIFT |
451 cfg.data_pol << CSI_SENS_CONF_DATA_POL_SHIFT |
452 cfg.vsync_pol << CSI_SENS_CONF_VSYNC_POL_SHIFT |
453 cfg.hsync_pol << CSI_SENS_CONF_HSYNC_POL_SHIFT |
454 cfg.pixclk_pol << CSI_SENS_CONF_PIX_CLK_POL_SHIFT |
455 cfg.ext_vsync << CSI_SENS_CONF_EXT_VSYNC_SHIFT |
456 cfg.clk_mode << CSI_SENS_CONF_SENS_PRTCL_SHIFT |
457 cfg.pack_tight << CSI_SENS_CONF_PACK_TIGHT_SHIFT |
458 cfg.force_eof << CSI_SENS_CONF_FORCE_EOF_SHIFT |
459 cfg.data_en_pol << CSI_SENS_CONF_DATA_EN_POL_SHIFT;
460
461 spin_lock_irqsave(&csi->lock, flags);
462
463 ipu_csi_write(csi, data, CSI_SENS_CONF);
464
465 /* Set CCIR registers */
466
467 switch (cfg.clk_mode) {
468 case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE:
469 ipu_csi_write(csi, 0x40030, CSI_CCIR_CODE_1);
470 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
471 break;
472 case IPU_CSI_CLK_MODE_CCIR656_INTERLACED:
473 if (width == 720 && height == 480) {
474 std = V4L2_STD_NTSC;
475 height = 525;
476 } else if (width == 720 && height == 576) {
477 std = V4L2_STD_PAL;
478 height = 625;
479 } else {
480 dev_err(csi->ipu->dev,
481 "Unsupported interlaced video mode\n");
482 ret = -EINVAL;
483 goto out_unlock;
484 }
485
486 ret = ipu_csi_set_bt_interlaced_codes(csi, infmt, outfmt, std);
487 if (ret)
488 goto out_unlock;
489 break;
490 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR:
491 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR:
492 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR:
493 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR:
494 ipu_csi_write(csi, 0x40030 | CSI_CCIR_ERR_DET_EN,
495 CSI_CCIR_CODE_1);
496 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
497 break;
498 case IPU_CSI_CLK_MODE_GATED_CLK:
499 case IPU_CSI_CLK_MODE_NONGATED_CLK:
500 ipu_csi_write(csi, 0, CSI_CCIR_CODE_1);
501 break;
502 }
503
504 /* Setup sensor frame size */
505 ipu_csi_write(csi, (width - 1) | ((height - 1) << 16),
506 CSI_SENS_FRM_SIZE);
507
508 dev_dbg(csi->ipu->dev, "CSI_SENS_CONF = 0x%08X\n",
509 ipu_csi_read(csi, CSI_SENS_CONF));
510 dev_dbg(csi->ipu->dev, "CSI_ACT_FRM_SIZE = 0x%08X\n",
511 ipu_csi_read(csi, CSI_ACT_FRM_SIZE));
512
513 out_unlock:
514 spin_unlock_irqrestore(&csi->lock, flags);
515
516 return ret;
517 }
518 EXPORT_SYMBOL_GPL(ipu_csi_init_interface);
519
ipu_csi_is_interlaced(struct ipu_csi * csi)520 bool ipu_csi_is_interlaced(struct ipu_csi *csi)
521 {
522 unsigned long flags;
523 u32 sensor_protocol;
524
525 spin_lock_irqsave(&csi->lock, flags);
526 sensor_protocol =
527 (ipu_csi_read(csi, CSI_SENS_CONF) &
528 CSI_SENS_CONF_SENS_PRTCL_MASK) >>
529 CSI_SENS_CONF_SENS_PRTCL_SHIFT;
530 spin_unlock_irqrestore(&csi->lock, flags);
531
532 switch (sensor_protocol) {
533 case IPU_CSI_CLK_MODE_GATED_CLK:
534 case IPU_CSI_CLK_MODE_NONGATED_CLK:
535 case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE:
536 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR:
537 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR:
538 return false;
539 case IPU_CSI_CLK_MODE_CCIR656_INTERLACED:
540 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR:
541 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR:
542 return true;
543 default:
544 dev_err(csi->ipu->dev,
545 "CSI %d sensor protocol unsupported\n", csi->id);
546 return false;
547 }
548 }
549 EXPORT_SYMBOL_GPL(ipu_csi_is_interlaced);
550
ipu_csi_get_window(struct ipu_csi * csi,struct v4l2_rect * w)551 void ipu_csi_get_window(struct ipu_csi *csi, struct v4l2_rect *w)
552 {
553 unsigned long flags;
554 u32 reg;
555
556 spin_lock_irqsave(&csi->lock, flags);
557
558 reg = ipu_csi_read(csi, CSI_ACT_FRM_SIZE);
559 w->width = (reg & 0xFFFF) + 1;
560 w->height = (reg >> 16 & 0xFFFF) + 1;
561
562 reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL);
563 w->left = (reg & CSI_HSC_MASK) >> CSI_HSC_SHIFT;
564 w->top = (reg & CSI_VSC_MASK) >> CSI_VSC_SHIFT;
565
566 spin_unlock_irqrestore(&csi->lock, flags);
567 }
568 EXPORT_SYMBOL_GPL(ipu_csi_get_window);
569
ipu_csi_set_window(struct ipu_csi * csi,struct v4l2_rect * w)570 void ipu_csi_set_window(struct ipu_csi *csi, struct v4l2_rect *w)
571 {
572 unsigned long flags;
573 u32 reg;
574
575 spin_lock_irqsave(&csi->lock, flags);
576
577 ipu_csi_write(csi, (w->width - 1) | ((w->height - 1) << 16),
578 CSI_ACT_FRM_SIZE);
579
580 reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL);
581 reg &= ~(CSI_HSC_MASK | CSI_VSC_MASK);
582 reg |= ((w->top << CSI_VSC_SHIFT) | (w->left << CSI_HSC_SHIFT));
583 ipu_csi_write(csi, reg, CSI_OUT_FRM_CTRL);
584
585 spin_unlock_irqrestore(&csi->lock, flags);
586 }
587 EXPORT_SYMBOL_GPL(ipu_csi_set_window);
588
ipu_csi_set_downsize(struct ipu_csi * csi,bool horiz,bool vert)589 void ipu_csi_set_downsize(struct ipu_csi *csi, bool horiz, bool vert)
590 {
591 unsigned long flags;
592 u32 reg;
593
594 spin_lock_irqsave(&csi->lock, flags);
595
596 reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL);
597 reg &= ~(CSI_HORI_DOWNSIZE_EN | CSI_VERT_DOWNSIZE_EN);
598 reg |= (horiz ? CSI_HORI_DOWNSIZE_EN : 0) |
599 (vert ? CSI_VERT_DOWNSIZE_EN : 0);
600 ipu_csi_write(csi, reg, CSI_OUT_FRM_CTRL);
601
602 spin_unlock_irqrestore(&csi->lock, flags);
603 }
604 EXPORT_SYMBOL_GPL(ipu_csi_set_downsize);
605
ipu_csi_set_test_generator(struct ipu_csi * csi,bool active,u32 r_value,u32 g_value,u32 b_value,u32 pix_clk)606 void ipu_csi_set_test_generator(struct ipu_csi *csi, bool active,
607 u32 r_value, u32 g_value, u32 b_value,
608 u32 pix_clk)
609 {
610 unsigned long flags;
611 u32 ipu_clk = clk_get_rate(csi->clk_ipu);
612 u32 temp;
613
614 spin_lock_irqsave(&csi->lock, flags);
615
616 temp = ipu_csi_read(csi, CSI_TST_CTRL);
617
618 if (!active) {
619 temp &= ~CSI_TEST_GEN_MODE_EN;
620 ipu_csi_write(csi, temp, CSI_TST_CTRL);
621 } else {
622 /* Set sensb_mclk div_ratio */
623 ipu_csi_set_testgen_mclk(csi, pix_clk, ipu_clk);
624
625 temp &= ~(CSI_TEST_GEN_R_MASK | CSI_TEST_GEN_G_MASK |
626 CSI_TEST_GEN_B_MASK);
627 temp |= CSI_TEST_GEN_MODE_EN;
628 temp |= (r_value << CSI_TEST_GEN_R_SHIFT) |
629 (g_value << CSI_TEST_GEN_G_SHIFT) |
630 (b_value << CSI_TEST_GEN_B_SHIFT);
631 ipu_csi_write(csi, temp, CSI_TST_CTRL);
632 }
633
634 spin_unlock_irqrestore(&csi->lock, flags);
635 }
636 EXPORT_SYMBOL_GPL(ipu_csi_set_test_generator);
637
ipu_csi_set_mipi_datatype(struct ipu_csi * csi,u32 vc,struct v4l2_mbus_framefmt * mbus_fmt)638 int ipu_csi_set_mipi_datatype(struct ipu_csi *csi, u32 vc,
639 struct v4l2_mbus_framefmt *mbus_fmt)
640 {
641 struct ipu_csi_bus_config cfg;
642 unsigned long flags;
643 u32 temp;
644 int ret;
645
646 if (vc > 3)
647 return -EINVAL;
648
649 ret = mbus_code_to_bus_cfg(&cfg, mbus_fmt->code, V4L2_MBUS_CSI2_DPHY);
650 if (ret < 0)
651 return ret;
652
653 spin_lock_irqsave(&csi->lock, flags);
654
655 temp = ipu_csi_read(csi, CSI_MIPI_DI);
656 temp &= ~(0xff << (vc * 8));
657 temp |= (cfg.mipi_dt << (vc * 8));
658 ipu_csi_write(csi, temp, CSI_MIPI_DI);
659
660 spin_unlock_irqrestore(&csi->lock, flags);
661
662 return 0;
663 }
664 EXPORT_SYMBOL_GPL(ipu_csi_set_mipi_datatype);
665
ipu_csi_set_skip_smfc(struct ipu_csi * csi,u32 skip,u32 max_ratio,u32 id)666 int ipu_csi_set_skip_smfc(struct ipu_csi *csi, u32 skip,
667 u32 max_ratio, u32 id)
668 {
669 unsigned long flags;
670 u32 temp;
671
672 if (max_ratio > 5 || id > 3)
673 return -EINVAL;
674
675 spin_lock_irqsave(&csi->lock, flags);
676
677 temp = ipu_csi_read(csi, CSI_SKIP);
678 temp &= ~(CSI_MAX_RATIO_SKIP_SMFC_MASK | CSI_ID_2_SKIP_MASK |
679 CSI_SKIP_SMFC_MASK);
680 temp |= (max_ratio << CSI_MAX_RATIO_SKIP_SMFC_SHIFT) |
681 (id << CSI_ID_2_SKIP_SHIFT) |
682 (skip << CSI_SKIP_SMFC_SHIFT);
683 ipu_csi_write(csi, temp, CSI_SKIP);
684
685 spin_unlock_irqrestore(&csi->lock, flags);
686
687 return 0;
688 }
689 EXPORT_SYMBOL_GPL(ipu_csi_set_skip_smfc);
690
ipu_csi_set_dest(struct ipu_csi * csi,enum ipu_csi_dest csi_dest)691 int ipu_csi_set_dest(struct ipu_csi *csi, enum ipu_csi_dest csi_dest)
692 {
693 unsigned long flags;
694 u32 csi_sens_conf, dest;
695
696 if (csi_dest == IPU_CSI_DEST_IDMAC)
697 dest = CSI_DATA_DEST_IDMAC;
698 else
699 dest = CSI_DATA_DEST_IC; /* IC or VDIC */
700
701 spin_lock_irqsave(&csi->lock, flags);
702
703 csi_sens_conf = ipu_csi_read(csi, CSI_SENS_CONF);
704 csi_sens_conf &= ~CSI_SENS_CONF_DATA_DEST_MASK;
705 csi_sens_conf |= (dest << CSI_SENS_CONF_DATA_DEST_SHIFT);
706 ipu_csi_write(csi, csi_sens_conf, CSI_SENS_CONF);
707
708 spin_unlock_irqrestore(&csi->lock, flags);
709
710 return 0;
711 }
712 EXPORT_SYMBOL_GPL(ipu_csi_set_dest);
713
ipu_csi_enable(struct ipu_csi * csi)714 int ipu_csi_enable(struct ipu_csi *csi)
715 {
716 ipu_module_enable(csi->ipu, csi->module);
717
718 return 0;
719 }
720 EXPORT_SYMBOL_GPL(ipu_csi_enable);
721
ipu_csi_disable(struct ipu_csi * csi)722 int ipu_csi_disable(struct ipu_csi *csi)
723 {
724 ipu_module_disable(csi->ipu, csi->module);
725
726 return 0;
727 }
728 EXPORT_SYMBOL_GPL(ipu_csi_disable);
729
ipu_csi_get(struct ipu_soc * ipu,int id)730 struct ipu_csi *ipu_csi_get(struct ipu_soc *ipu, int id)
731 {
732 unsigned long flags;
733 struct ipu_csi *csi, *ret;
734
735 if (id > 1)
736 return ERR_PTR(-EINVAL);
737
738 csi = ipu->csi_priv[id];
739 ret = csi;
740
741 spin_lock_irqsave(&csi->lock, flags);
742
743 if (csi->inuse) {
744 ret = ERR_PTR(-EBUSY);
745 goto unlock;
746 }
747
748 csi->inuse = true;
749 unlock:
750 spin_unlock_irqrestore(&csi->lock, flags);
751 return ret;
752 }
753 EXPORT_SYMBOL_GPL(ipu_csi_get);
754
ipu_csi_put(struct ipu_csi * csi)755 void ipu_csi_put(struct ipu_csi *csi)
756 {
757 unsigned long flags;
758
759 spin_lock_irqsave(&csi->lock, flags);
760 csi->inuse = false;
761 spin_unlock_irqrestore(&csi->lock, flags);
762 }
763 EXPORT_SYMBOL_GPL(ipu_csi_put);
764
ipu_csi_init(struct ipu_soc * ipu,struct device * dev,int id,unsigned long base,u32 module,struct clk * clk_ipu)765 int ipu_csi_init(struct ipu_soc *ipu, struct device *dev, int id,
766 unsigned long base, u32 module, struct clk *clk_ipu)
767 {
768 struct ipu_csi *csi;
769
770 if (id > 1)
771 return -ENODEV;
772
773 csi = devm_kzalloc(dev, sizeof(*csi), GFP_KERNEL);
774 if (!csi)
775 return -ENOMEM;
776
777 ipu->csi_priv[id] = csi;
778
779 spin_lock_init(&csi->lock);
780 csi->module = module;
781 csi->id = id;
782 csi->clk_ipu = clk_ipu;
783 csi->base = devm_ioremap(dev, base, PAGE_SIZE);
784 if (!csi->base)
785 return -ENOMEM;
786
787 dev_dbg(dev, "CSI%d base: 0x%08lx remapped to %p\n",
788 id, base, csi->base);
789 csi->ipu = ipu;
790
791 return 0;
792 }
793
ipu_csi_exit(struct ipu_soc * ipu,int id)794 void ipu_csi_exit(struct ipu_soc *ipu, int id)
795 {
796 }
797
ipu_csi_dump(struct ipu_csi * csi)798 void ipu_csi_dump(struct ipu_csi *csi)
799 {
800 dev_dbg(csi->ipu->dev, "CSI_SENS_CONF: %08x\n",
801 ipu_csi_read(csi, CSI_SENS_CONF));
802 dev_dbg(csi->ipu->dev, "CSI_SENS_FRM_SIZE: %08x\n",
803 ipu_csi_read(csi, CSI_SENS_FRM_SIZE));
804 dev_dbg(csi->ipu->dev, "CSI_ACT_FRM_SIZE: %08x\n",
805 ipu_csi_read(csi, CSI_ACT_FRM_SIZE));
806 dev_dbg(csi->ipu->dev, "CSI_OUT_FRM_CTRL: %08x\n",
807 ipu_csi_read(csi, CSI_OUT_FRM_CTRL));
808 dev_dbg(csi->ipu->dev, "CSI_TST_CTRL: %08x\n",
809 ipu_csi_read(csi, CSI_TST_CTRL));
810 dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_1: %08x\n",
811 ipu_csi_read(csi, CSI_CCIR_CODE_1));
812 dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_2: %08x\n",
813 ipu_csi_read(csi, CSI_CCIR_CODE_2));
814 dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_3: %08x\n",
815 ipu_csi_read(csi, CSI_CCIR_CODE_3));
816 dev_dbg(csi->ipu->dev, "CSI_MIPI_DI: %08x\n",
817 ipu_csi_read(csi, CSI_MIPI_DI));
818 dev_dbg(csi->ipu->dev, "CSI_SKIP: %08x\n",
819 ipu_csi_read(csi, CSI_SKIP));
820 }
821 EXPORT_SYMBOL_GPL(ipu_csi_dump);
822
