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Merge tag 'regmap-fix-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / media / platform / am437x / am437x-vpfe.c
blob0fb9f9ba1219d3a29850696408074bcf2d7808c1
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * TI VPFE capture Driver
4 *
5 * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
6 *
7 * Benoit Parrot <bparrot@ti.com>
8 * Lad, Prabhakar <prabhakar.csengg@gmail.com>
9 */
10
11 #include <linux/delay.h>
12 #include <linux/err.h>
13 #include <linux/init.h>
14 #include <linux/interrupt.h>
15 #include <linux/io.h>
16 #include <linux/module.h>
17 #include <linux/of_graph.h>
18 #include <linux/pinctrl/consumer.h>
19 #include <linux/platform_device.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/slab.h>
22 #include <linux/uaccess.h>
23 #include <linux/videodev2.h>
24
25 #include <media/v4l2-common.h>
26 #include <media/v4l2-ctrls.h>
27 #include <media/v4l2-event.h>
28 #include <media/v4l2-fwnode.h>
29 #include <media/v4l2-rect.h>
30
31 #include "am437x-vpfe.h"
32
33 #define VPFE_MODULE_NAME "vpfe"
34 #define VPFE_VERSION "0.1.0"
35
36 static int debug;
37 module_param(debug, int, 0644);
38 MODULE_PARM_DESC(debug, "Debug level 0-8");
39
40 #define vpfe_dbg(level, dev, fmt, arg...) \
41 v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ##arg)
42 #define vpfe_info(dev, fmt, arg...) \
43 v4l2_info(&dev->v4l2_dev, fmt, ##arg)
44 #define vpfe_err(dev, fmt, arg...) \
45 v4l2_err(&dev->v4l2_dev, fmt, ##arg)
46
47 /* standard information */
48 struct vpfe_standard {
49 v4l2_std_id std_id;
50 unsigned int width;
51 unsigned int height;
52 struct v4l2_fract pixelaspect;
53 int frame_format;
54 };
55
56 static const struct vpfe_standard vpfe_standards[] = {
57 {V4L2_STD_525_60, 720, 480, {11, 10}, 1},
58 {V4L2_STD_625_50, 720, 576, {54, 59}, 1},
59 };
60
61 static struct vpfe_fmt formats[VPFE_NUM_FORMATS] = {
62 {
63 .fourcc = V4L2_PIX_FMT_YUYV,
64 .code = MEDIA_BUS_FMT_YUYV8_2X8,
65 .bitsperpixel = 16,
66 }, {
67 .fourcc = V4L2_PIX_FMT_UYVY,
68 .code = MEDIA_BUS_FMT_UYVY8_2X8,
69 .bitsperpixel = 16,
70 }, {
71 .fourcc = V4L2_PIX_FMT_YVYU,
72 .code = MEDIA_BUS_FMT_YVYU8_2X8,
73 .bitsperpixel = 16,
74 }, {
75 .fourcc = V4L2_PIX_FMT_VYUY,
76 .code = MEDIA_BUS_FMT_VYUY8_2X8,
77 .bitsperpixel = 16,
78 }, {
79 .fourcc = V4L2_PIX_FMT_SBGGR8,
80 .code = MEDIA_BUS_FMT_SBGGR8_1X8,
81 .bitsperpixel = 8,
82 }, {
83 .fourcc = V4L2_PIX_FMT_SGBRG8,
84 .code = MEDIA_BUS_FMT_SGBRG8_1X8,
85 .bitsperpixel = 8,
86 }, {
87 .fourcc = V4L2_PIX_FMT_SGRBG8,
88 .code = MEDIA_BUS_FMT_SGRBG8_1X8,
89 .bitsperpixel = 8,
90 }, {
91 .fourcc = V4L2_PIX_FMT_SRGGB8,
92 .code = MEDIA_BUS_FMT_SRGGB8_1X8,
93 .bitsperpixel = 8,
94 }, {
95 .fourcc = V4L2_PIX_FMT_RGB565,
96 .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
97 .bitsperpixel = 16,
98 }, {
99 .fourcc = V4L2_PIX_FMT_RGB565X,
100 .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
101 .bitsperpixel = 16,
102 },
103 };
104
105 static int __subdev_get_format(struct vpfe_device *vpfe,
106 struct v4l2_mbus_framefmt *fmt);
107 static int vpfe_calc_format_size(struct vpfe_device *vpfe,
108 const struct vpfe_fmt *fmt,
109 struct v4l2_format *f);
110
111 static struct vpfe_fmt *find_format_by_code(struct vpfe_device *vpfe,
112 unsigned int code)
113 {
114 struct vpfe_fmt *fmt;
115 unsigned int k;
116
117 for (k = 0; k < vpfe->num_active_fmt; k++) {
118 fmt = vpfe->active_fmt[k];
119 if (fmt->code == code)
120 return fmt;
121 }
122
123 return NULL;
124 }
125
126 static struct vpfe_fmt *find_format_by_pix(struct vpfe_device *vpfe,
127 unsigned int pixelformat)
128 {
129 struct vpfe_fmt *fmt;
130 unsigned int k;
131
132 for (k = 0; k < vpfe->num_active_fmt; k++) {
133 fmt = vpfe->active_fmt[k];
134 if (fmt->fourcc == pixelformat)
135 return fmt;
136 }
137
138 return NULL;
139 }
140
141 static unsigned int __get_bytesperpixel(struct vpfe_device *vpfe,
142 const struct vpfe_fmt *fmt)
143 {
144 struct vpfe_subdev_info *sdinfo = vpfe->current_subdev;
145 unsigned int bus_width = sdinfo->vpfe_param.bus_width;
146 u32 bpp, bus_width_bytes, clocksperpixel;
147
148 bus_width_bytes = ALIGN(bus_width, 8) >> 3;
149 clocksperpixel = DIV_ROUND_UP(fmt->bitsperpixel, bus_width);
150 bpp = clocksperpixel * bus_width_bytes;
151
152 return bpp;
153 }
154
155 /* Print Four-character-code (FOURCC) */
156 static char *print_fourcc(u32 fmt)
157 {
158 static char code[5];
159
160 code[0] = (unsigned char)(fmt & 0xff);
161 code[1] = (unsigned char)((fmt >> 8) & 0xff);
162 code[2] = (unsigned char)((fmt >> 16) & 0xff);
163 code[3] = (unsigned char)((fmt >> 24) & 0xff);
164 code[4] = '\0';
165
166 return code;
167 }
168
169 static inline u32 vpfe_reg_read(struct vpfe_ccdc *ccdc, u32 offset)
170 {
171 return ioread32(ccdc->ccdc_cfg.base_addr + offset);
172 }
173
174 static inline void vpfe_reg_write(struct vpfe_ccdc *ccdc, u32 val, u32 offset)
175 {
176 iowrite32(val, ccdc->ccdc_cfg.base_addr + offset);
177 }
178
179 static inline struct vpfe_device *to_vpfe(struct vpfe_ccdc *ccdc)
180 {
181 return container_of(ccdc, struct vpfe_device, ccdc);
182 }
183
184 static inline
185 struct vpfe_cap_buffer *to_vpfe_buffer(struct vb2_v4l2_buffer *vb)
186 {
187 return container_of(vb, struct vpfe_cap_buffer, vb);
188 }
189
190 static inline void vpfe_pcr_enable(struct vpfe_ccdc *ccdc, int flag)
191 {
192 vpfe_reg_write(ccdc, !!flag, VPFE_PCR);
193 }
194
195 static void vpfe_config_enable(struct vpfe_ccdc *ccdc, int flag)
196 {
197 unsigned int cfg;
198
199 if (!flag) {
200 cfg = vpfe_reg_read(ccdc, VPFE_CONFIG);
201 cfg &= ~(VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT);
202 } else {
203 cfg = VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT;
204 }
205
206 vpfe_reg_write(ccdc, cfg, VPFE_CONFIG);
207 }
208
209 static void vpfe_ccdc_setwin(struct vpfe_ccdc *ccdc,
210 struct v4l2_rect *image_win,
211 enum ccdc_frmfmt frm_fmt,
212 int bpp)
213 {
214 int horz_start, horz_nr_pixels;
215 int vert_start, vert_nr_lines;
216 int val, mid_img;
217
218 /*
219 * ppc - per pixel count. indicates how many pixels per cell
220 * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
221 * raw capture this is 1
222 */
223 horz_start = image_win->left * bpp;
224 horz_nr_pixels = (image_win->width * bpp) - 1;
225 vpfe_reg_write(ccdc, (horz_start << VPFE_HORZ_INFO_SPH_SHIFT) |
226 horz_nr_pixels, VPFE_HORZ_INFO);
227
228 vert_start = image_win->top;
229
230 if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
231 vert_nr_lines = (image_win->height >> 1) - 1;
232 vert_start >>= 1;
233 /* configure VDINT0 */
234 val = (vert_start << VPFE_VDINT_VDINT0_SHIFT);
235 } else {
236 vert_nr_lines = image_win->height - 1;
237 /*
238 * configure VDINT0 and VDINT1. VDINT1 will be at half
239 * of image height
240 */
241 mid_img = vert_start + (image_win->height / 2);
242 val = (vert_start << VPFE_VDINT_VDINT0_SHIFT) |
243 (mid_img & VPFE_VDINT_VDINT1_MASK);
244 }
245
246 vpfe_reg_write(ccdc, val, VPFE_VDINT);
247
248 vpfe_reg_write(ccdc, (vert_start << VPFE_VERT_START_SLV0_SHIFT) |
249 vert_start, VPFE_VERT_START);
250 vpfe_reg_write(ccdc, vert_nr_lines, VPFE_VERT_LINES);
251 }
252
253 static void vpfe_reg_dump(struct vpfe_ccdc *ccdc)
254 {
255 struct vpfe_device *vpfe = to_vpfe(ccdc);
256
257 vpfe_dbg(3, vpfe, "ALAW: 0x%x\n", vpfe_reg_read(ccdc, VPFE_ALAW));
258 vpfe_dbg(3, vpfe, "CLAMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_CLAMP));
259 vpfe_dbg(3, vpfe, "DCSUB: 0x%x\n", vpfe_reg_read(ccdc, VPFE_DCSUB));
260 vpfe_dbg(3, vpfe, "BLKCMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_BLKCMP));
261 vpfe_dbg(3, vpfe, "COLPTN: 0x%x\n", vpfe_reg_read(ccdc, VPFE_COLPTN));
262 vpfe_dbg(3, vpfe, "SDOFST: 0x%x\n", vpfe_reg_read(ccdc, VPFE_SDOFST));
263 vpfe_dbg(3, vpfe, "SYN_MODE: 0x%x\n",
264 vpfe_reg_read(ccdc, VPFE_SYNMODE));
265 vpfe_dbg(3, vpfe, "HSIZE_OFF: 0x%x\n",
266 vpfe_reg_read(ccdc, VPFE_HSIZE_OFF));
267 vpfe_dbg(3, vpfe, "HORZ_INFO: 0x%x\n",
268 vpfe_reg_read(ccdc, VPFE_HORZ_INFO));
269 vpfe_dbg(3, vpfe, "VERT_START: 0x%x\n",
270 vpfe_reg_read(ccdc, VPFE_VERT_START));
271 vpfe_dbg(3, vpfe, "VERT_LINES: 0x%x\n",
272 vpfe_reg_read(ccdc, VPFE_VERT_LINES));
273 }
274
275 static int
276 vpfe_ccdc_validate_param(struct vpfe_ccdc *ccdc,
277 struct vpfe_ccdc_config_params_raw *ccdcparam)
278 {
279 struct vpfe_device *vpfe = to_vpfe(ccdc);
280 u8 max_gamma, max_data;
281
282 if (!ccdcparam->alaw.enable)
283 return 0;
284
285 max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd);
286 max_data = ccdc_data_size_max_bit(ccdcparam->data_sz);
287
288 if (ccdcparam->alaw.gamma_wd > VPFE_CCDC_GAMMA_BITS_09_0 ||
289 ccdcparam->data_sz > VPFE_CCDC_DATA_8BITS ||
290 max_gamma > max_data) {
291 vpfe_dbg(1, vpfe, "Invalid data line select\n");
292 return -EINVAL;
293 }
294
295 return 0;
296 }
297
298 static void
299 vpfe_ccdc_update_raw_params(struct vpfe_ccdc *ccdc,
300 struct vpfe_ccdc_config_params_raw *raw_params)
301 {
302 struct vpfe_ccdc_config_params_raw *config_params =
303 &ccdc->ccdc_cfg.bayer.config_params;
304
305 *config_params = *raw_params;
306 }
307
308 /*
309 * vpfe_ccdc_restore_defaults()
310 * This function will write defaults to all CCDC registers
311 */
312 static void vpfe_ccdc_restore_defaults(struct vpfe_ccdc *ccdc)
313 {
314 int i;
315
316 /* Disable CCDC */
317 vpfe_pcr_enable(ccdc, 0);
318
319 /* set all registers to default value */
320 for (i = 4; i <= 0x94; i += 4)
321 vpfe_reg_write(ccdc, 0, i);
322
323 vpfe_reg_write(ccdc, VPFE_NO_CULLING, VPFE_CULLING);
324 vpfe_reg_write(ccdc, VPFE_CCDC_GAMMA_BITS_11_2, VPFE_ALAW);
325 }
326
327 static int vpfe_ccdc_close(struct vpfe_ccdc *ccdc, struct device *dev)
328 {
329 struct vpfe_device *vpfe = to_vpfe(ccdc);
330 u32 dma_cntl, pcr;
331
332 pcr = vpfe_reg_read(ccdc, VPFE_PCR);
333 if (pcr)
334 vpfe_dbg(1, vpfe, "VPFE_PCR is still set (%x)", pcr);
335
336 dma_cntl = vpfe_reg_read(ccdc, VPFE_DMA_CNTL);
337 if ((dma_cntl & VPFE_DMA_CNTL_OVERFLOW))
338 vpfe_dbg(1, vpfe, "VPFE_DMA_CNTL_OVERFLOW is still set (%x)",
339 dma_cntl);
340
341 /* Disable CCDC by resetting all register to default POR values */
342 vpfe_ccdc_restore_defaults(ccdc);
343
344 /* Disabled the module at the CONFIG level */
345 vpfe_config_enable(ccdc, 0);
346
347 pm_runtime_put_sync(dev);
348 return 0;
349 }
350
351 static int vpfe_ccdc_set_params(struct vpfe_ccdc *ccdc, void __user *params)
352 {
353 struct vpfe_device *vpfe = to_vpfe(ccdc);
354 struct vpfe_ccdc_config_params_raw raw_params;
355 int x;
356
357 if (ccdc->ccdc_cfg.if_type != VPFE_RAW_BAYER)
358 return -EINVAL;
359
360 x = copy_from_user(&raw_params, params, sizeof(raw_params));
361 if (x) {
362 vpfe_dbg(1, vpfe,
363 "%s: error in copying ccdc params, %d\n",
364 __func__, x);
365 return -EFAULT;
366 }
367
368 if (!vpfe_ccdc_validate_param(ccdc, &raw_params)) {
369 vpfe_ccdc_update_raw_params(ccdc, &raw_params);
370 return 0;
371 }
372
373 return -EINVAL;
374 }
375
376 /*
377 * vpfe_ccdc_config_ycbcr()
378 * This function will configure CCDC for YCbCr video capture
379 */
380 static void vpfe_ccdc_config_ycbcr(struct vpfe_ccdc *ccdc)
381 {
382 struct ccdc_params_ycbcr *params = &ccdc->ccdc_cfg.ycbcr;
383 u32 syn_mode;
384
385 /*
386 * first restore the CCDC registers to default values
387 * This is important since we assume default values to be set in
388 * a lot of registers that we didn't touch
389 */
390 vpfe_ccdc_restore_defaults(ccdc);
391
392 /*
393 * configure pixel format, frame format, configure video frame
394 * format, enable output to SDRAM, enable internal timing generator
395 * and 8bit pack mode
396 */
397 syn_mode = (((params->pix_fmt & VPFE_SYN_MODE_INPMOD_MASK) <<
398 VPFE_SYN_MODE_INPMOD_SHIFT) |
399 ((params->frm_fmt & VPFE_SYN_FLDMODE_MASK) <<
400 VPFE_SYN_FLDMODE_SHIFT) | VPFE_VDHDEN_ENABLE |
401 VPFE_WEN_ENABLE | VPFE_DATA_PACK_ENABLE);
402
403 /* setup BT.656 sync mode */
404 if (params->bt656_enable) {
405 vpfe_reg_write(ccdc, VPFE_REC656IF_BT656_EN, VPFE_REC656IF);
406
407 /*
408 * configure the FID, VD, HD pin polarity,
409 * fld,hd pol positive, vd negative, 8-bit data
410 */
411 syn_mode |= VPFE_SYN_MODE_VD_POL_NEGATIVE;
412 if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)
413 syn_mode |= VPFE_SYN_MODE_10BITS;
414 else
415 syn_mode |= VPFE_SYN_MODE_8BITS;
416 } else {
417 /* y/c external sync mode */
418 syn_mode |= (((params->fid_pol & VPFE_FID_POL_MASK) <<
419 VPFE_FID_POL_SHIFT) |
420 ((params->hd_pol & VPFE_HD_POL_MASK) <<
421 VPFE_HD_POL_SHIFT) |
422 ((params->vd_pol & VPFE_VD_POL_MASK) <<
423 VPFE_VD_POL_SHIFT));
424 }
425 vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);
426
427 /* configure video window */
428 vpfe_ccdc_setwin(ccdc, &params->win,
429 params->frm_fmt, params->bytesperpixel);
430
431 /*
432 * configure the order of y cb cr in SDRAM, and disable latch
433 * internal register on vsync
434 */
435 if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)
436 vpfe_reg_write(ccdc,
437 (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |
438 VPFE_LATCH_ON_VSYNC_DISABLE |
439 VPFE_CCDCFG_BW656_10BIT, VPFE_CCDCFG);
440 else
441 vpfe_reg_write(ccdc,
442 (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |
443 VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);
444
445 /*
446 * configure the horizontal line offset. This should be a
447 * on 32 byte boundary. So clear LSB 5 bits
448 */
449 vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);
450
451 /* configure the memory line offset */
452 if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
453 /* two fields are interleaved in memory */
454 vpfe_reg_write(ccdc, VPFE_SDOFST_FIELD_INTERLEAVED,
455 VPFE_SDOFST);
456 }
457
458 static void
459 vpfe_ccdc_config_black_clamp(struct vpfe_ccdc *ccdc,
460 struct vpfe_ccdc_black_clamp *bclamp)
461 {
462 u32 val;
463
464 if (!bclamp->enable) {
465 /* configure DCSub */
466 val = (bclamp->dc_sub) & VPFE_BLK_DC_SUB_MASK;
467 vpfe_reg_write(ccdc, val, VPFE_DCSUB);
468 vpfe_reg_write(ccdc, VPFE_CLAMP_DEFAULT_VAL, VPFE_CLAMP);
469 return;
470 }
471 /*
472 * Configure gain, Start pixel, No of line to be avg,
473 * No of pixel/line to be avg, & Enable the Black clamping
474 */
475 val = ((bclamp->sgain & VPFE_BLK_SGAIN_MASK) |
476 ((bclamp->start_pixel & VPFE_BLK_ST_PXL_MASK) <<
477 VPFE_BLK_ST_PXL_SHIFT) |
478 ((bclamp->sample_ln & VPFE_BLK_SAMPLE_LINE_MASK) <<
479 VPFE_BLK_SAMPLE_LINE_SHIFT) |
480 ((bclamp->sample_pixel & VPFE_BLK_SAMPLE_LN_MASK) <<
481 VPFE_BLK_SAMPLE_LN_SHIFT) | VPFE_BLK_CLAMP_ENABLE);
482 vpfe_reg_write(ccdc, val, VPFE_CLAMP);
483 /* If Black clamping is enable then make dcsub 0 */
484 vpfe_reg_write(ccdc, VPFE_DCSUB_DEFAULT_VAL, VPFE_DCSUB);
485 }
486
487 static void
488 vpfe_ccdc_config_black_compense(struct vpfe_ccdc *ccdc,
489 struct vpfe_ccdc_black_compensation *bcomp)
490 {
491 u32 val;
492
493 val = ((bcomp->b & VPFE_BLK_COMP_MASK) |
494 ((bcomp->gb & VPFE_BLK_COMP_MASK) <<
495 VPFE_BLK_COMP_GB_COMP_SHIFT) |
496 ((bcomp->gr & VPFE_BLK_COMP_MASK) <<
497 VPFE_BLK_COMP_GR_COMP_SHIFT) |
498 ((bcomp->r & VPFE_BLK_COMP_MASK) <<
499 VPFE_BLK_COMP_R_COMP_SHIFT));
500 vpfe_reg_write(ccdc, val, VPFE_BLKCMP);
501 }
502
503 /*
504 * vpfe_ccdc_config_raw()
505 * This function will configure CCDC for Raw capture mode
506 */
507 static void vpfe_ccdc_config_raw(struct vpfe_ccdc *ccdc)
508 {
509 struct vpfe_device *vpfe = to_vpfe(ccdc);
510 struct vpfe_ccdc_config_params_raw *config_params =
511 &ccdc->ccdc_cfg.bayer.config_params;
512 struct ccdc_params_raw *params = &ccdc->ccdc_cfg.bayer;
513 unsigned int syn_mode;
514 unsigned int val;
515
516 /* Reset CCDC */
517 vpfe_ccdc_restore_defaults(ccdc);
518
519 /* Disable latching function registers on VSYNC */
520 vpfe_reg_write(ccdc, VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);
521
522 /*
523 * Configure the vertical sync polarity(SYN_MODE.VDPOL),
524 * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity
525 * (SYN_MODE.FLDPOL), frame format(progressive or interlace),
526 * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output
527 * SDRAM, enable internal timing generator
528 */
529 syn_mode = (((params->vd_pol & VPFE_VD_POL_MASK) << VPFE_VD_POL_SHIFT) |
530 ((params->hd_pol & VPFE_HD_POL_MASK) << VPFE_HD_POL_SHIFT) |
531 ((params->fid_pol & VPFE_FID_POL_MASK) <<
532 VPFE_FID_POL_SHIFT) | ((params->frm_fmt &
533 VPFE_FRM_FMT_MASK) << VPFE_FRM_FMT_SHIFT) |
534 ((config_params->data_sz & VPFE_DATA_SZ_MASK) <<
535 VPFE_DATA_SZ_SHIFT) | ((params->pix_fmt &
536 VPFE_PIX_FMT_MASK) << VPFE_PIX_FMT_SHIFT) |
537 VPFE_WEN_ENABLE | VPFE_VDHDEN_ENABLE);
538
539 /* Enable and configure aLaw register if needed */
540 if (config_params->alaw.enable) {
541 val = ((config_params->alaw.gamma_wd &
542 VPFE_ALAW_GAMMA_WD_MASK) | VPFE_ALAW_ENABLE);
543 vpfe_reg_write(ccdc, val, VPFE_ALAW);
544 vpfe_dbg(3, vpfe, "\nWriting 0x%x to ALAW...\n", val);
545 }
546
547 /* Configure video window */
548 vpfe_ccdc_setwin(ccdc, &params->win, params->frm_fmt,
549 params->bytesperpixel);
550
551 /* Configure Black Clamp */
552 vpfe_ccdc_config_black_clamp(ccdc, &config_params->blk_clamp);
553
554 /* Configure Black level compensation */
555 vpfe_ccdc_config_black_compense(ccdc, &config_params->blk_comp);
556
557 /* If data size is 8 bit then pack the data */
558 if ((config_params->data_sz == VPFE_CCDC_DATA_8BITS) ||
559 config_params->alaw.enable)
560 syn_mode |= VPFE_DATA_PACK_ENABLE;
561
562 /*
563 * Configure Horizontal offset register. If pack 8 is enabled then
564 * 1 pixel will take 1 byte
565 */
566 vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);
567
568 vpfe_dbg(3, vpfe, "Writing %d (%x) to HSIZE_OFF\n",
569 params->bytesperline, params->bytesperline);
570
571 /* Set value for SDOFST */
572 if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
573 if (params->image_invert_enable) {
574 /* For interlace inverse mode */
575 vpfe_reg_write(ccdc, VPFE_INTERLACED_IMAGE_INVERT,
576 VPFE_SDOFST);
577 } else {
578 /* For interlace non inverse mode */
579 vpfe_reg_write(ccdc, VPFE_INTERLACED_NO_IMAGE_INVERT,
580 VPFE_SDOFST);
581 }
582 } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
583 vpfe_reg_write(ccdc, VPFE_PROGRESSIVE_NO_IMAGE_INVERT,
584 VPFE_SDOFST);
585 }
586
587 vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);
588
589 vpfe_reg_dump(ccdc);
590 }
591
592 static inline int
593 vpfe_ccdc_set_buftype(struct vpfe_ccdc *ccdc,
594 enum ccdc_buftype buf_type)
595 {
596 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
597 ccdc->ccdc_cfg.bayer.buf_type = buf_type;
598 else
599 ccdc->ccdc_cfg.ycbcr.buf_type = buf_type;
600
601 return 0;
602 }
603
604 static inline enum ccdc_buftype vpfe_ccdc_get_buftype(struct vpfe_ccdc *ccdc)
605 {
606 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
607 return ccdc->ccdc_cfg.bayer.buf_type;
608
609 return ccdc->ccdc_cfg.ycbcr.buf_type;
610 }
611
612 static int vpfe_ccdc_set_pixel_format(struct vpfe_ccdc *ccdc, u32 pixfmt)
613 {
614 struct vpfe_device *vpfe = to_vpfe(ccdc);
615
616 vpfe_dbg(1, vpfe, "%s: if_type: %d, pixfmt:%s\n",
617 __func__, ccdc->ccdc_cfg.if_type, print_fourcc(pixfmt));
618
619 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
620 ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
621 /*
622 * Need to clear it in case it was left on
623 * after the last capture.
624 */
625 ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 0;
626
627 switch (pixfmt) {
628 case V4L2_PIX_FMT_SBGGR8:
629 ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 1;
630 break;
631
632 case V4L2_PIX_FMT_YUYV:
633 case V4L2_PIX_FMT_UYVY:
634 case V4L2_PIX_FMT_YUV420:
635 case V4L2_PIX_FMT_NV12:
636 case V4L2_PIX_FMT_RGB565X:
637 break;
638
639 case V4L2_PIX_FMT_SBGGR16:
640 default:
641 return -EINVAL;
642 }
643 } else {
644 switch (pixfmt) {
645 case V4L2_PIX_FMT_YUYV:
646 ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
647 break;
648
649 case V4L2_PIX_FMT_UYVY:
650 ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
651 break;
652
653 default:
654 return -EINVAL;
655 }
656 }
657
658 return 0;
659 }
660
661 static u32 vpfe_ccdc_get_pixel_format(struct vpfe_ccdc *ccdc)
662 {
663 u32 pixfmt;
664
665 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
666 pixfmt = V4L2_PIX_FMT_YUYV;
667 } else {
668 if (ccdc->ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
669 pixfmt = V4L2_PIX_FMT_YUYV;
670 else
671 pixfmt = V4L2_PIX_FMT_UYVY;
672 }
673
674 return pixfmt;
675 }
676
677 static int
678 vpfe_ccdc_set_image_window(struct vpfe_ccdc *ccdc,
679 struct v4l2_rect *win, unsigned int bpp)
680 {
681 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
682 ccdc->ccdc_cfg.bayer.win = *win;
683 ccdc->ccdc_cfg.bayer.bytesperpixel = bpp;
684 ccdc->ccdc_cfg.bayer.bytesperline = ALIGN(win->width * bpp, 32);
685 } else {
686 ccdc->ccdc_cfg.ycbcr.win = *win;
687 ccdc->ccdc_cfg.ycbcr.bytesperpixel = bpp;
688 ccdc->ccdc_cfg.ycbcr.bytesperline = ALIGN(win->width * bpp, 32);
689 }
690
691 return 0;
692 }
693
694 static inline void
695 vpfe_ccdc_get_image_window(struct vpfe_ccdc *ccdc,
696 struct v4l2_rect *win)
697 {
698 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
699 *win = ccdc->ccdc_cfg.bayer.win;
700 else
701 *win = ccdc->ccdc_cfg.ycbcr.win;
702 }
703
704 static inline unsigned int vpfe_ccdc_get_line_length(struct vpfe_ccdc *ccdc)
705 {
706 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
707 return ccdc->ccdc_cfg.bayer.bytesperline;
708
709 return ccdc->ccdc_cfg.ycbcr.bytesperline;
710 }
711
712 static inline int
713 vpfe_ccdc_set_frame_format(struct vpfe_ccdc *ccdc,
714 enum ccdc_frmfmt frm_fmt)
715 {
716 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
717 ccdc->ccdc_cfg.bayer.frm_fmt = frm_fmt;
718 else
719 ccdc->ccdc_cfg.ycbcr.frm_fmt = frm_fmt;
720
721 return 0;
722 }
723
724 static inline enum ccdc_frmfmt
725 vpfe_ccdc_get_frame_format(struct vpfe_ccdc *ccdc)
726 {
727 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
728 return ccdc->ccdc_cfg.bayer.frm_fmt;
729
730 return ccdc->ccdc_cfg.ycbcr.frm_fmt;
731 }
732
733 static inline int vpfe_ccdc_getfid(struct vpfe_ccdc *ccdc)
734 {
735 return (vpfe_reg_read(ccdc, VPFE_SYNMODE) >> 15) & 1;
736 }
737
738 static inline void vpfe_set_sdr_addr(struct vpfe_ccdc *ccdc, unsigned long addr)
739 {
740 vpfe_reg_write(ccdc, addr & 0xffffffe0, VPFE_SDR_ADDR);
741 }
742
743 static int vpfe_ccdc_set_hw_if_params(struct vpfe_ccdc *ccdc,
744 struct vpfe_hw_if_param *params)
745 {
746 struct vpfe_device *vpfe = to_vpfe(ccdc);
747
748 ccdc->ccdc_cfg.if_type = params->if_type;
749
750 switch (params->if_type) {
751 case VPFE_BT656:
752 case VPFE_YCBCR_SYNC_16:
753 case VPFE_YCBCR_SYNC_8:
754 case VPFE_BT656_10BIT:
755 ccdc->ccdc_cfg.ycbcr.vd_pol = params->vdpol;
756 ccdc->ccdc_cfg.ycbcr.hd_pol = params->hdpol;
757 break;
758
759 case VPFE_RAW_BAYER:
760 ccdc->ccdc_cfg.bayer.vd_pol = params->vdpol;
761 ccdc->ccdc_cfg.bayer.hd_pol = params->hdpol;
762 if (params->bus_width == 10)
763 ccdc->ccdc_cfg.bayer.config_params.data_sz =
764 VPFE_CCDC_DATA_10BITS;
765 else
766 ccdc->ccdc_cfg.bayer.config_params.data_sz =
767 VPFE_CCDC_DATA_8BITS;
768 vpfe_dbg(1, vpfe, "params.bus_width: %d\n",
769 params->bus_width);
770 vpfe_dbg(1, vpfe, "config_params.data_sz: %d\n",
771 ccdc->ccdc_cfg.bayer.config_params.data_sz);
772 break;
773
774 default:
775 return -EINVAL;
776 }
777
778 return 0;
779 }
780
781 static void vpfe_clear_intr(struct vpfe_ccdc *ccdc, int vdint)
782 {
783 unsigned int vpfe_int_status;
784
785 vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS);
786
787 switch (vdint) {
788 /* VD0 interrupt */
789 case VPFE_VDINT0:
790 vpfe_int_status &= ~VPFE_VDINT0;
791 vpfe_int_status |= VPFE_VDINT0;
792 break;
793
794 /* VD1 interrupt */
795 case VPFE_VDINT1:
796 vpfe_int_status &= ~VPFE_VDINT1;
797 vpfe_int_status |= VPFE_VDINT1;
798 break;
799
800 /* VD2 interrupt */
801 case VPFE_VDINT2:
802 vpfe_int_status &= ~VPFE_VDINT2;
803 vpfe_int_status |= VPFE_VDINT2;
804 break;
805
806 /* Clear all interrupts */
807 default:
808 vpfe_int_status &= ~(VPFE_VDINT0 |
809 VPFE_VDINT1 |
810 VPFE_VDINT2);
811 vpfe_int_status |= (VPFE_VDINT0 |
812 VPFE_VDINT1 |
813 VPFE_VDINT2);
814 break;
815 }
816 /* Clear specific VDINT from the status register */
817 vpfe_reg_write(ccdc, vpfe_int_status, VPFE_IRQ_STS);
818
819 vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS);
820
821 /* Acknowledge that we are done with all interrupts */
822 vpfe_reg_write(ccdc, 1, VPFE_IRQ_EOI);
823 }
824
825 static void vpfe_ccdc_config_defaults(struct vpfe_ccdc *ccdc)
826 {
827 ccdc->ccdc_cfg.if_type = VPFE_RAW_BAYER;
828
829 ccdc->ccdc_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT;
830 ccdc->ccdc_cfg.ycbcr.frm_fmt = CCDC_FRMFMT_INTERLACED;
831 ccdc->ccdc_cfg.ycbcr.fid_pol = VPFE_PINPOL_POSITIVE;
832 ccdc->ccdc_cfg.ycbcr.vd_pol = VPFE_PINPOL_POSITIVE;
833 ccdc->ccdc_cfg.ycbcr.hd_pol = VPFE_PINPOL_POSITIVE;
834 ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
835 ccdc->ccdc_cfg.ycbcr.buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED;
836
837 ccdc->ccdc_cfg.ycbcr.win.left = 0;
838 ccdc->ccdc_cfg.ycbcr.win.top = 0;
839 ccdc->ccdc_cfg.ycbcr.win.width = 720;
840 ccdc->ccdc_cfg.ycbcr.win.height = 576;
841 ccdc->ccdc_cfg.ycbcr.bt656_enable = 1;
842
843 ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
844 ccdc->ccdc_cfg.bayer.frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
845 ccdc->ccdc_cfg.bayer.fid_pol = VPFE_PINPOL_POSITIVE;
846 ccdc->ccdc_cfg.bayer.vd_pol = VPFE_PINPOL_POSITIVE;
847 ccdc->ccdc_cfg.bayer.hd_pol = VPFE_PINPOL_POSITIVE;
848
849 ccdc->ccdc_cfg.bayer.win.left = 0;
850 ccdc->ccdc_cfg.bayer.win.top = 0;
851 ccdc->ccdc_cfg.bayer.win.width = 800;
852 ccdc->ccdc_cfg.bayer.win.height = 600;
853 ccdc->ccdc_cfg.bayer.config_params.data_sz = VPFE_CCDC_DATA_8BITS;
854 ccdc->ccdc_cfg.bayer.config_params.alaw.gamma_wd =
855 VPFE_CCDC_GAMMA_BITS_09_0;
856 }
857
858 /*
859 * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings
860 */
861 static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe,
862 struct v4l2_format *f)
863 {
864 struct v4l2_rect image_win;
865 enum ccdc_buftype buf_type;
866 enum ccdc_frmfmt frm_fmt;
867
868 memset(f, 0, sizeof(*f));
869 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
870 vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win);
871 f->fmt.pix.width = image_win.width;
872 f->fmt.pix.height = image_win.height;
873 f->fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc);
874 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
875 f->fmt.pix.height;
876 buf_type = vpfe_ccdc_get_buftype(&vpfe->ccdc);
877 f->fmt.pix.pixelformat = vpfe_ccdc_get_pixel_format(&vpfe->ccdc);
878 frm_fmt = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
879
880 if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
881 f->fmt.pix.field = V4L2_FIELD_NONE;
882 } else if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
883 if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) {
884 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
885 } else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED) {
886 f->fmt.pix.field = V4L2_FIELD_SEQ_TB;
887 } else {
888 vpfe_err(vpfe, "Invalid buf_type\n");
889 return -EINVAL;
890 }
891 } else {
892 vpfe_err(vpfe, "Invalid frm_fmt\n");
893 return -EINVAL;
894 }
895 return 0;
896 }
897
898 static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe)
899 {
900 enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED;
901 u32 bpp;
902 int ret = 0;
903
904 vpfe_dbg(1, vpfe, "pixelformat: %s\n",
905 print_fourcc(vpfe->fmt.fmt.pix.pixelformat));
906
907 if (vpfe_ccdc_set_pixel_format(&vpfe->ccdc,
908 vpfe->fmt.fmt.pix.pixelformat) < 0) {
909 vpfe_err(vpfe, "couldn't set pix format in ccdc\n");
910 return -EINVAL;
911 }
912
913 /* configure the image window */
914 bpp = __get_bytesperpixel(vpfe, vpfe->current_vpfe_fmt);
915 vpfe_ccdc_set_image_window(&vpfe->ccdc, &vpfe->crop, bpp);
916
917 switch (vpfe->fmt.fmt.pix.field) {
918 case V4L2_FIELD_INTERLACED:
919 /* do nothing, since it is default */
920 ret = vpfe_ccdc_set_buftype(
921 &vpfe->ccdc,
922 CCDC_BUFTYPE_FLD_INTERLEAVED);
923 break;
924
925 case V4L2_FIELD_NONE:
926 frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
927 /* buffer type only applicable for interlaced scan */
928 break;
929
930 case V4L2_FIELD_SEQ_TB:
931 ret = vpfe_ccdc_set_buftype(
932 &vpfe->ccdc,
933 CCDC_BUFTYPE_FLD_SEPARATED);
934 break;
935
936 default:
937 return -EINVAL;
938 }
939
940 if (ret)
941 return ret;
942
943 return vpfe_ccdc_set_frame_format(&vpfe->ccdc, frm_fmt);
944 }
945
946 /*
947 * vpfe_config_image_format()
948 * For a given standard, this functions sets up the default
949 * pix format & crop values in the vpfe device and ccdc. It first
950 * starts with defaults based values from the standard table.
951 * It then checks if sub device supports get_fmt and then override the
952 * values based on that.Sets crop values to match with scan resolution
953 * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the
954 * values in ccdc
955 */
956 static int vpfe_config_image_format(struct vpfe_device *vpfe,
957 v4l2_std_id std_id)
958 {
959 struct vpfe_fmt *fmt;
960 struct v4l2_mbus_framefmt mbus_fmt;
961 int i, ret;
962
963 for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
964 if (vpfe_standards[i].std_id & std_id) {
965 vpfe->std_info.active_pixels =
966 vpfe_standards[i].width;
967 vpfe->std_info.active_lines =
968 vpfe_standards[i].height;
969 vpfe->std_info.frame_format =
970 vpfe_standards[i].frame_format;
971 vpfe->std_index = i;
972
973 break;
974 }
975 }
976
977 if (i == ARRAY_SIZE(vpfe_standards)) {
978 vpfe_err(vpfe, "standard not supported\n");
979 return -EINVAL;
980 }
981
982 ret = __subdev_get_format(vpfe, &mbus_fmt);
983 if (ret)
984 return ret;
985
986 fmt = find_format_by_code(vpfe, mbus_fmt.code);
987 if (!fmt) {
988 vpfe_dbg(3, vpfe, "mbus code format (0x%08x) not found.\n",
989 mbus_fmt.code);
990 return -EINVAL;
991 }
992
993 /* Save current subdev format */
994 v4l2_fill_pix_format(&vpfe->fmt.fmt.pix, &mbus_fmt);
995 vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
996 vpfe->fmt.fmt.pix.pixelformat = fmt->fourcc;
997 vpfe_calc_format_size(vpfe, fmt, &vpfe->fmt);
998 vpfe->current_vpfe_fmt = fmt;
999
1000 /* Update the crop window based on found values */
1001 vpfe->crop.top = 0;
1002 vpfe->crop.left = 0;
1003 vpfe->crop.width = mbus_fmt.width;
1004 vpfe->crop.height = mbus_fmt.height;
1005
1006 return vpfe_config_ccdc_image_format(vpfe);
1007 }
1008
1009 static int vpfe_initialize_device(struct vpfe_device *vpfe)
1010 {
1011 struct vpfe_subdev_info *sdinfo;
1012 int ret;
1013
1014 sdinfo = &vpfe->cfg->sub_devs[0];
1015 sdinfo->sd = vpfe->sd[0];
1016 vpfe->current_input = 0;
1017 vpfe->std_index = 0;
1018 /* Configure the default format information */
1019 ret = vpfe_config_image_format(vpfe,
1020 vpfe_standards[vpfe->std_index].std_id);
1021 if (ret)
1022 return ret;
1023
1024 pm_runtime_get_sync(vpfe->pdev);
1025
1026 vpfe_config_enable(&vpfe->ccdc, 1);
1027
1028 vpfe_ccdc_restore_defaults(&vpfe->ccdc);
1029
1030 /* Clear all VPFE interrupts */
1031 vpfe_clear_intr(&vpfe->ccdc, -1);
1032
1033 return ret;
1034 }
1035
1036 /*
1037 * vpfe_release : This function is based on the vb2_fop_release
1038 * helper function.
1039 * It has been augmented to handle module power management,
1040 * by disabling/enabling h/w module fcntl clock when necessary.
1041 */
1042 static int vpfe_release(struct file *file)
1043 {
1044 struct vpfe_device *vpfe = video_drvdata(file);
1045 bool fh_singular;
1046 int ret;
1047
1048 mutex_lock(&vpfe->lock);
1049
1050 /* Save the singular status before we call the clean-up helper */
1051 fh_singular = v4l2_fh_is_singular_file(file);
1052
1053 /* the release helper will cleanup any on-going streaming */
1054 ret = _vb2_fop_release(file, NULL);
1055
1056 /*
1057 * If this was the last open file.
1058 * Then de-initialize hw module.
1059 */
1060 if (fh_singular)
1061 vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev);
1062
1063 mutex_unlock(&vpfe->lock);
1064
1065 return ret;
1066 }
1067
1068 /*
1069 * vpfe_open : This function is based on the v4l2_fh_open helper function.
1070 * It has been augmented to handle module power management,
1071 * by disabling/enabling h/w module fcntl clock when necessary.
1072 */
1073 static int vpfe_open(struct file *file)
1074 {
1075 struct vpfe_device *vpfe = video_drvdata(file);
1076 int ret;
1077
1078 mutex_lock(&vpfe->lock);
1079
1080 ret = v4l2_fh_open(file);
1081 if (ret) {
1082 vpfe_err(vpfe, "v4l2_fh_open failed\n");
1083 goto unlock;
1084 }
1085
1086 if (!v4l2_fh_is_singular_file(file))
1087 goto unlock;
1088
1089 if (vpfe_initialize_device(vpfe)) {
1090 v4l2_fh_release(file);
1091 ret = -ENODEV;
1092 }
1093
1094 unlock:
1095 mutex_unlock(&vpfe->lock);
1096 return ret;
1097 }
1098
1099 /**
1100 * vpfe_schedule_next_buffer: set next buffer address for capture
1101 * @vpfe : ptr to vpfe device
1102 *
1103 * This function will get next buffer from the dma queue and
1104 * set the buffer address in the vpfe register for capture.
1105 * the buffer is marked active
1106 */
1107 static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe)
1108 {
1109 dma_addr_t addr;
1110
1111 spin_lock(&vpfe->dma_queue_lock);
1112 if (list_empty(&vpfe->dma_queue)) {
1113 spin_unlock(&vpfe->dma_queue_lock);
1114 return;
1115 }
1116
1117 vpfe->next_frm = list_entry(vpfe->dma_queue.next,
1118 struct vpfe_cap_buffer, list);
1119 list_del(&vpfe->next_frm->list);
1120 spin_unlock(&vpfe->dma_queue_lock);
1121
1122 addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb.vb2_buf, 0);
1123 vpfe_set_sdr_addr(&vpfe->ccdc, addr);
1124 }
1125
1126 static inline void vpfe_schedule_bottom_field(struct vpfe_device *vpfe)
1127 {
1128 dma_addr_t addr;
1129
1130 addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb.vb2_buf, 0) +
1131 vpfe->field_off;
1132
1133 vpfe_set_sdr_addr(&vpfe->ccdc, addr);
1134 }
1135
1136 /*
1137 * vpfe_process_buffer_complete: process a completed buffer
1138 * @vpfe : ptr to vpfe device
1139 *
1140 * This function time stamp the buffer and mark it as DONE. It also
1141 * wake up any process waiting on the QUEUE and set the next buffer
1142 * as current
1143 */
1144 static inline void vpfe_process_buffer_complete(struct vpfe_device *vpfe)
1145 {
1146 vpfe->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
1147 vpfe->cur_frm->vb.field = vpfe->fmt.fmt.pix.field;
1148 vpfe->cur_frm->vb.sequence = vpfe->sequence++;
1149 vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
1150 vpfe->cur_frm = vpfe->next_frm;
1151 }
1152
1153 static void vpfe_handle_interlaced_irq(struct vpfe_device *vpfe,
1154 enum v4l2_field field)
1155 {
1156 int fid;
1157
1158 /* interlaced or TB capture check which field
1159 * we are in hardware
1160 */
1161 fid = vpfe_ccdc_getfid(&vpfe->ccdc);
1162
1163 /* switch the software maintained field id */
1164 vpfe->field ^= 1;
1165 if (fid == vpfe->field) {
1166 /* we are in-sync here,continue */
1167 if (fid == 0) {
1168 /*
1169 * One frame is just being captured. If the
1170 * next frame is available, release the
1171 * current frame and move on
1172 */
1173 if (vpfe->cur_frm != vpfe->next_frm)
1174 vpfe_process_buffer_complete(vpfe);
1175
1176 if (vpfe->stopping)
1177 return;
1178
1179 /*
1180 * based on whether the two fields are stored
1181 * interleave or separately in memory,
1182 * reconfigure the CCDC memory address
1183 */
1184 if (field == V4L2_FIELD_SEQ_TB)
1185 vpfe_schedule_bottom_field(vpfe);
1186 } else {
1187 /*
1188 * if one field is just being captured configure
1189 * the next frame get the next frame from the empty
1190 * queue if no frame is available hold on to the
1191 * current buffer
1192 */
1193 if (vpfe->cur_frm == vpfe->next_frm)
1194 vpfe_schedule_next_buffer(vpfe);
1195 }
1196 } else if (fid == 0) {
1197 /*
1198 * out of sync. Recover from any hardware out-of-sync.
1199 * May loose one frame
1200 */
1201 vpfe->field = fid;
1202 }
1203 }
1204
1205 /*
1206 * vpfe_isr : ISR handler for vpfe capture (VINT0)
1207 * @irq: irq number
1208 * @dev_id: dev_id ptr
1209 *
1210 * It changes status of the captured buffer, takes next buffer from the queue
1211 * and sets its address in VPFE registers
1212 */
1213 static irqreturn_t vpfe_isr(int irq, void *dev)
1214 {
1215 struct vpfe_device *vpfe = (struct vpfe_device *)dev;
1216 enum v4l2_field field = vpfe->fmt.fmt.pix.field;
1217 int intr_status, stopping = vpfe->stopping;
1218
1219 intr_status = vpfe_reg_read(&vpfe->ccdc, VPFE_IRQ_STS);
1220
1221 if (intr_status & VPFE_VDINT0) {
1222 if (field == V4L2_FIELD_NONE) {
1223 if (vpfe->cur_frm != vpfe->next_frm)
1224 vpfe_process_buffer_complete(vpfe);
1225 } else {
1226 vpfe_handle_interlaced_irq(vpfe, field);
1227 }
1228 if (stopping) {
1229 vpfe->stopping = false;
1230 complete(&vpfe->capture_stop);
1231 }
1232 }
1233
1234 if (intr_status & VPFE_VDINT1 && !stopping) {
1235 if (field == V4L2_FIELD_NONE &&
1236 vpfe->cur_frm == vpfe->next_frm)
1237 vpfe_schedule_next_buffer(vpfe);
1238 }
1239
1240 vpfe_clear_intr(&vpfe->ccdc, intr_status);
1241
1242 return IRQ_HANDLED;
1243 }
1244
1245 static inline void vpfe_detach_irq(struct vpfe_device *vpfe)
1246 {
1247 unsigned int intr = VPFE_VDINT0;
1248 enum ccdc_frmfmt frame_format;
1249
1250 frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
1251 if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
1252 intr |= VPFE_VDINT1;
1253
1254 vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_CLR);
1255 }
1256
1257 static inline void vpfe_attach_irq(struct vpfe_device *vpfe)
1258 {
1259 unsigned int intr = VPFE_VDINT0;
1260 enum ccdc_frmfmt frame_format;
1261
1262 frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
1263 if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
1264 intr |= VPFE_VDINT1;
1265
1266 vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_SET);
1267 }
1268
1269 static int vpfe_querycap(struct file *file, void *priv,
1270 struct v4l2_capability *cap)
1271 {
1272 struct vpfe_device *vpfe = video_drvdata(file);
1273
1274 strscpy(cap->driver, VPFE_MODULE_NAME, sizeof(cap->driver));
1275 strscpy(cap->card, "TI AM437x VPFE", sizeof(cap->card));
1276 snprintf(cap->bus_info, sizeof(cap->bus_info),
1277 "platform:%s", vpfe->v4l2_dev.name);
1278 return 0;
1279 }
1280
1281 /* get the format set at output pad of the adjacent subdev */
1282 static int __subdev_get_format(struct vpfe_device *vpfe,
1283 struct v4l2_mbus_framefmt *fmt)
1284 {
1285 struct v4l2_subdev *sd = vpfe->current_subdev->sd;
1286 struct v4l2_subdev_format sd_fmt;
1287 struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
1288 int ret;
1289
1290 sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1291 sd_fmt.pad = 0;
1292
1293 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sd_fmt);
1294 if (ret)
1295 return ret;
1296
1297 *fmt = *mbus_fmt;
1298
1299 vpfe_dbg(1, vpfe, "%s: %dx%d code:%04X\n", __func__,
1300 fmt->width, fmt->height, fmt->code);
1301
1302 return 0;
1303 }
1304
1305 /* set the format at output pad of the adjacent subdev */
1306 static int __subdev_set_format(struct vpfe_device *vpfe,
1307 struct v4l2_mbus_framefmt *fmt)
1308 {
1309 struct v4l2_subdev *sd = vpfe->current_subdev->sd;
1310 struct v4l2_subdev_format sd_fmt;
1311 struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
1312 int ret;
1313
1314 sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1315 sd_fmt.pad = 0;
1316 *mbus_fmt = *fmt;
1317
1318 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sd_fmt);
1319 if (ret)
1320 return ret;
1321
1322 vpfe_dbg(1, vpfe, "%s %dx%d code:%04X\n", __func__,
1323 fmt->width, fmt->height, fmt->code);
1324
1325 return 0;
1326 }
1327
1328 static int vpfe_calc_format_size(struct vpfe_device *vpfe,
1329 const struct vpfe_fmt *fmt,
1330 struct v4l2_format *f)
1331 {
1332 u32 bpp;
1333
1334 if (!fmt) {
1335 vpfe_dbg(3, vpfe, "No vpfe_fmt provided!\n");
1336 return -EINVAL;
1337 }
1338
1339 bpp = __get_bytesperpixel(vpfe, fmt);
1340
1341 /* pitch should be 32 bytes aligned */
1342 f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.width * bpp, 32);
1343 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
1344 f->fmt.pix.height;
1345
1346 vpfe_dbg(3, vpfe, "%s: fourcc: %s size: %dx%d bpl:%d img_size:%d\n",
1347 __func__, print_fourcc(f->fmt.pix.pixelformat),
1348 f->fmt.pix.width, f->fmt.pix.height,
1349 f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
1350
1351 return 0;
1352 }
1353
1354 static int vpfe_g_fmt(struct file *file, void *priv,
1355 struct v4l2_format *fmt)
1356 {
1357 struct vpfe_device *vpfe = video_drvdata(file);
1358
1359 *fmt = vpfe->fmt;
1360
1361 return 0;
1362 }
1363
1364 static int vpfe_enum_fmt(struct file *file, void *priv,
1365 struct v4l2_fmtdesc *f)
1366 {
1367 struct vpfe_device *vpfe = video_drvdata(file);
1368 struct vpfe_subdev_info *sdinfo;
1369 struct vpfe_fmt *fmt;
1370
1371 sdinfo = vpfe->current_subdev;
1372 if (!sdinfo->sd)
1373 return -EINVAL;
1374
1375 if (f->index >= vpfe->num_active_fmt)
1376 return -EINVAL;
1377
1378 fmt = vpfe->active_fmt[f->index];
1379
1380 f->pixelformat = fmt->fourcc;
1381
1382 vpfe_dbg(1, vpfe, "%s: mbus index: %d code: %x pixelformat: %s\n",
1383 __func__, f->index, fmt->code, print_fourcc(fmt->fourcc));
1384
1385 return 0;
1386 }
1387
1388 static int vpfe_try_fmt(struct file *file, void *priv,
1389 struct v4l2_format *f)
1390 {
1391 struct vpfe_device *vpfe = video_drvdata(file);
1392 struct v4l2_subdev *sd = vpfe->current_subdev->sd;
1393 const struct vpfe_fmt *fmt;
1394 struct v4l2_subdev_frame_size_enum fse;
1395 int ret, found;
1396
1397 fmt = find_format_by_pix(vpfe, f->fmt.pix.pixelformat);
1398 if (!fmt) {
1399 /* default to first entry */
1400 vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n",
1401 f->fmt.pix.pixelformat);
1402 fmt = vpfe->active_fmt[0];
1403 f->fmt.pix.pixelformat = fmt->fourcc;
1404 }
1405
1406 f->fmt.pix.field = vpfe->fmt.fmt.pix.field;
1407
1408 /* check for/find a valid width/height */
1409 ret = 0;
1410 found = false;
1411 fse.pad = 0;
1412 fse.code = fmt->code;
1413 fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1414 for (fse.index = 0; ; fse.index++) {
1415 ret = v4l2_subdev_call(sd, pad, enum_frame_size,
1416 NULL, &fse);
1417 if (ret)
1418 break;
1419
1420 if (f->fmt.pix.width == fse.max_width &&
1421 f->fmt.pix.height == fse.max_height) {
1422 found = true;
1423 break;
1424 } else if (f->fmt.pix.width >= fse.min_width &&
1425 f->fmt.pix.width <= fse.max_width &&
1426 f->fmt.pix.height >= fse.min_height &&
1427 f->fmt.pix.height <= fse.max_height) {
1428 found = true;
1429 break;
1430 }
1431 }
1432
1433 if (!found) {
1434 /* use existing values as default */
1435 f->fmt.pix.width = vpfe->fmt.fmt.pix.width;
1436 f->fmt.pix.height = vpfe->fmt.fmt.pix.height;
1437 }
1438
1439 /*
1440 * Use current colorspace for now, it will get
1441 * updated properly during s_fmt
1442 */
1443 f->fmt.pix.colorspace = vpfe->fmt.fmt.pix.colorspace;
1444 return vpfe_calc_format_size(vpfe, fmt, f);
1445 }
1446
1447 static int vpfe_s_fmt(struct file *file, void *priv,
1448 struct v4l2_format *fmt)
1449 {
1450 struct vpfe_device *vpfe = video_drvdata(file);
1451 struct vpfe_fmt *f;
1452 struct v4l2_mbus_framefmt mbus_fmt;
1453 int ret;
1454
1455 /* If streaming is started, return error */
1456 if (vb2_is_busy(&vpfe->buffer_queue)) {
1457 vpfe_err(vpfe, "%s device busy\n", __func__);
1458 return -EBUSY;
1459 }
1460
1461 ret = vpfe_try_fmt(file, priv, fmt);
1462 if (ret < 0)
1463 return ret;
1464
1465 f = find_format_by_pix(vpfe, fmt->fmt.pix.pixelformat);
1466
1467 v4l2_fill_mbus_format(&mbus_fmt, &fmt->fmt.pix, f->code);
1468
1469 ret = __subdev_set_format(vpfe, &mbus_fmt);
1470 if (ret)
1471 return ret;
1472
1473 /* Just double check nothing has gone wrong */
1474 if (mbus_fmt.code != f->code) {
1475 vpfe_dbg(3, vpfe,
1476 "%s subdev changed format on us, this should not happen\n",
1477 __func__);
1478 return -EINVAL;
1479 }
1480
1481 v4l2_fill_pix_format(&vpfe->fmt.fmt.pix, &mbus_fmt);
1482 vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1483 vpfe->fmt.fmt.pix.pixelformat = f->fourcc;
1484 vpfe_calc_format_size(vpfe, f, &vpfe->fmt);
1485 *fmt = vpfe->fmt;
1486 vpfe->current_vpfe_fmt = f;
1487
1488 /* Update the crop window based on found values */
1489 vpfe->crop.width = fmt->fmt.pix.width;
1490 vpfe->crop.height = fmt->fmt.pix.height;
1491
1492 /* set image capture parameters in the ccdc */
1493 return vpfe_config_ccdc_image_format(vpfe);
1494 }
1495
1496 static int vpfe_enum_size(struct file *file, void *priv,
1497 struct v4l2_frmsizeenum *fsize)
1498 {
1499 struct vpfe_device *vpfe = video_drvdata(file);
1500 struct v4l2_subdev_frame_size_enum fse;
1501 struct v4l2_subdev *sd = vpfe->current_subdev->sd;
1502 struct vpfe_fmt *fmt;
1503 int ret;
1504
1505 /* check for valid format */
1506 fmt = find_format_by_pix(vpfe, fsize->pixel_format);
1507 if (!fmt) {
1508 vpfe_dbg(3, vpfe, "Invalid pixel code: %x\n",
1509 fsize->pixel_format);
1510 return -EINVAL;
1511 }
1512
1513 memset(fsize->reserved, 0x0, sizeof(fsize->reserved));
1514
1515 memset(&fse, 0x0, sizeof(fse));
1516 fse.index = fsize->index;
1517 fse.pad = 0;
1518 fse.code = fmt->code;
1519 fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1520 ret = v4l2_subdev_call(sd, pad, enum_frame_size, NULL, &fse);
1521 if (ret)
1522 return ret;
1523
1524 vpfe_dbg(1, vpfe, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
1525 __func__, fse.index, fse.code, fse.min_width, fse.max_width,
1526 fse.min_height, fse.max_height);
1527
1528 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1529 fsize->discrete.width = fse.max_width;
1530 fsize->discrete.height = fse.max_height;
1531
1532 vpfe_dbg(1, vpfe, "%s: index: %d pixformat: %s size: %dx%d\n",
1533 __func__, fsize->index, print_fourcc(fsize->pixel_format),
1534 fsize->discrete.width, fsize->discrete.height);
1535
1536 return 0;
1537 }
1538
1539 /*
1540 * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
1541 * given app input index
1542 */
1543 static int
1544 vpfe_get_subdev_input_index(struct vpfe_device *vpfe,
1545 int *subdev_index,
1546 int *subdev_input_index,
1547 int app_input_index)
1548 {
1549 int i, j = 0;
1550
1551 for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
1552 if (app_input_index < (j + 1)) {
1553 *subdev_index = i;
1554 *subdev_input_index = app_input_index - j;
1555 return 0;
1556 }
1557 j++;
1558 }
1559 return -EINVAL;
1560 }
1561
1562 /*
1563 * vpfe_get_app_input - Get app input index for a given subdev input index
1564 * driver stores the input index of the current sub device and translate it
1565 * when application request the current input
1566 */
1567 static int vpfe_get_app_input_index(struct vpfe_device *vpfe,
1568 int *app_input_index)
1569 {
1570 struct vpfe_config *cfg = vpfe->cfg;
1571 struct vpfe_subdev_info *sdinfo;
1572 struct i2c_client *client;
1573 struct i2c_client *curr_client;
1574 int i, j = 0;
1575
1576 curr_client = v4l2_get_subdevdata(vpfe->current_subdev->sd);
1577 for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
1578 sdinfo = &cfg->sub_devs[i];
1579 client = v4l2_get_subdevdata(sdinfo->sd);
1580 if (client->addr == curr_client->addr &&
1581 client->adapter->nr == curr_client->adapter->nr) {
1582 if (vpfe->current_input >= 1)
1583 return -1;
1584 *app_input_index = j + vpfe->current_input;
1585 return 0;
1586 }
1587 j++;
1588 }
1589 return -EINVAL;
1590 }
1591
1592 static int vpfe_enum_input(struct file *file, void *priv,
1593 struct v4l2_input *inp)
1594 {
1595 struct vpfe_device *vpfe = video_drvdata(file);
1596 struct vpfe_subdev_info *sdinfo;
1597 int subdev, index;
1598
1599 if (vpfe_get_subdev_input_index(vpfe, &subdev, &index,
1600 inp->index) < 0) {
1601 vpfe_dbg(1, vpfe,
1602 "input information not found for the subdev\n");
1603 return -EINVAL;
1604 }
1605 sdinfo = &vpfe->cfg->sub_devs[subdev];
1606 *inp = sdinfo->inputs[index];
1607
1608 return 0;
1609 }
1610
1611 static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
1612 {
1613 struct vpfe_device *vpfe = video_drvdata(file);
1614
1615 return vpfe_get_app_input_index(vpfe, index);
1616 }
1617
1618 /* Assumes caller is holding vpfe_dev->lock */
1619 static int vpfe_set_input(struct vpfe_device *vpfe, unsigned int index)
1620 {
1621 int subdev_index = 0, inp_index = 0;
1622 struct vpfe_subdev_info *sdinfo;
1623 struct vpfe_route *route;
1624 u32 input, output;
1625 int ret;
1626
1627 /* If streaming is started, return error */
1628 if (vb2_is_busy(&vpfe->buffer_queue)) {
1629 vpfe_err(vpfe, "%s device busy\n", __func__);
1630 return -EBUSY;
1631 }
1632 ret = vpfe_get_subdev_input_index(vpfe,
1633 &subdev_index,
1634 &inp_index,
1635 index);
1636 if (ret < 0) {
1637 vpfe_err(vpfe, "invalid input index: %d\n", index);
1638 goto get_out;
1639 }
1640
1641 sdinfo = &vpfe->cfg->sub_devs[subdev_index];
1642 sdinfo->sd = vpfe->sd[subdev_index];
1643 route = &sdinfo->routes[inp_index];
1644 if (route && sdinfo->can_route) {
1645 input = route->input;
1646 output = route->output;
1647 if (sdinfo->sd) {
1648 ret = v4l2_subdev_call(sdinfo->sd, video,
1649 s_routing, input, output, 0);
1650 if (ret) {
1651 vpfe_err(vpfe, "s_routing failed\n");
1652 ret = -EINVAL;
1653 goto get_out;
1654 }
1655 }
1656
1657 }
1658
1659 vpfe->current_subdev = sdinfo;
1660 if (sdinfo->sd)
1661 vpfe->v4l2_dev.ctrl_handler = sdinfo->sd->ctrl_handler;
1662 vpfe->current_input = index;
1663 vpfe->std_index = 0;
1664
1665 /* set the bus/interface parameter for the sub device in ccdc */
1666 ret = vpfe_ccdc_set_hw_if_params(&vpfe->ccdc, &sdinfo->vpfe_param);
1667 if (ret)
1668 return ret;
1669
1670 /* set the default image parameters in the device */
1671 return vpfe_config_image_format(vpfe,
1672 vpfe_standards[vpfe->std_index].std_id);
1673
1674 get_out:
1675 return ret;
1676 }
1677
1678 static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
1679 {
1680 struct vpfe_device *vpfe = video_drvdata(file);
1681
1682 return vpfe_set_input(vpfe, index);
1683 }
1684
1685 static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
1686 {
1687 struct vpfe_device *vpfe = video_drvdata(file);
1688 struct vpfe_subdev_info *sdinfo;
1689
1690 sdinfo = vpfe->current_subdev;
1691 if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))
1692 return -ENODATA;
1693
1694 /* Call querystd function of decoder device */
1695 return v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
1696 video, querystd, std_id);
1697 }
1698
1699 static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)
1700 {
1701 struct vpfe_device *vpfe = video_drvdata(file);
1702 struct vpfe_subdev_info *sdinfo;
1703 int ret;
1704
1705 sdinfo = vpfe->current_subdev;
1706 if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))
1707 return -ENODATA;
1708
1709 /* if trying to set the same std then nothing to do */
1710 if (vpfe_standards[vpfe->std_index].std_id == std_id)
1711 return 0;
1712
1713 /* If streaming is started, return error */
1714 if (vb2_is_busy(&vpfe->buffer_queue)) {
1715 vpfe_err(vpfe, "%s device busy\n", __func__);
1716 ret = -EBUSY;
1717 return ret;
1718 }
1719
1720 ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
1721 video, s_std, std_id);
1722 if (ret < 0) {
1723 vpfe_err(vpfe, "Failed to set standard\n");
1724 return ret;
1725 }
1726 ret = vpfe_config_image_format(vpfe, std_id);
1727
1728 return ret;
1729 }
1730
1731 static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
1732 {
1733 struct vpfe_device *vpfe = video_drvdata(file);
1734 struct vpfe_subdev_info *sdinfo;
1735
1736 sdinfo = vpfe->current_subdev;
1737 if (sdinfo->inputs[0].capabilities != V4L2_IN_CAP_STD)
1738 return -ENODATA;
1739
1740 *std_id = vpfe_standards[vpfe->std_index].std_id;
1741
1742 return 0;
1743 }
1744
1745 /*
1746 * vpfe_calculate_offsets : This function calculates buffers offset
1747 * for top and bottom field
1748 */
1749 static void vpfe_calculate_offsets(struct vpfe_device *vpfe)
1750 {
1751 struct v4l2_rect image_win;
1752
1753 vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win);
1754 vpfe->field_off = image_win.height * image_win.width;
1755 }
1756
1757 /*
1758 * vpfe_queue_setup - Callback function for buffer setup.
1759 * @vq: vb2_queue ptr
1760 * @nbuffers: ptr to number of buffers requested by application
1761 * @nplanes:: contains number of distinct video planes needed to hold a frame
1762 * @sizes[]: contains the size (in bytes) of each plane.
1763 * @alloc_devs: ptr to allocation context
1764 *
1765 * This callback function is called when reqbuf() is called to adjust
1766 * the buffer count and buffer size
1767 */
1768 static int vpfe_queue_setup(struct vb2_queue *vq,
1769 unsigned int *nbuffers, unsigned int *nplanes,
1770 unsigned int sizes[], struct device *alloc_devs[])
1771 {
1772 struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
1773 unsigned size = vpfe->fmt.fmt.pix.sizeimage;
1774
1775 if (vq->num_buffers + *nbuffers < 3)
1776 *nbuffers = 3 - vq->num_buffers;
1777
1778 if (*nplanes) {
1779 if (sizes[0] < size)
1780 return -EINVAL;
1781 size = sizes[0];
1782 }
1783
1784 *nplanes = 1;
1785 sizes[0] = size;
1786
1787 vpfe_dbg(1, vpfe,
1788 "nbuffers=%d, size=%u\n", *nbuffers, sizes[0]);
1789
1790 /* Calculate field offset */
1791 vpfe_calculate_offsets(vpfe);
1792
1793 return 0;
1794 }
1795
1796 /*
1797 * vpfe_buffer_prepare : callback function for buffer prepare
1798 * @vb: ptr to vb2_buffer
1799 *
1800 * This is the callback function for buffer prepare when vb2_qbuf()
1801 * function is called. The buffer is prepared and user space virtual address
1802 * or user address is converted into physical address
1803 */
1804 static int vpfe_buffer_prepare(struct vb2_buffer *vb)
1805 {
1806 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1807 struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);
1808
1809 vb2_set_plane_payload(vb, 0, vpfe->fmt.fmt.pix.sizeimage);
1810
1811 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
1812 return -EINVAL;
1813
1814 vbuf->field = vpfe->fmt.fmt.pix.field;
1815
1816 return 0;
1817 }
1818
1819 /*
1820 * vpfe_buffer_queue : Callback function to add buffer to DMA queue
1821 * @vb: ptr to vb2_buffer
1822 */
1823 static void vpfe_buffer_queue(struct vb2_buffer *vb)
1824 {
1825 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1826 struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);
1827 struct vpfe_cap_buffer *buf = to_vpfe_buffer(vbuf);
1828 unsigned long flags = 0;
1829
1830 /* add the buffer to the DMA queue */
1831 spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
1832 list_add_tail(&buf->list, &vpfe->dma_queue);
1833 spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
1834 }
1835
1836 static void vpfe_return_all_buffers(struct vpfe_device *vpfe,
1837 enum vb2_buffer_state state)
1838 {
1839 struct vpfe_cap_buffer *buf, *node;
1840 unsigned long flags;
1841
1842 spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
1843 list_for_each_entry_safe(buf, node, &vpfe->dma_queue, list) {
1844 vb2_buffer_done(&buf->vb.vb2_buf, state);
1845 list_del(&buf->list);
1846 }
1847
1848 if (vpfe->cur_frm)
1849 vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, state);
1850
1851 if (vpfe->next_frm && vpfe->next_frm != vpfe->cur_frm)
1852 vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, state);
1853
1854 vpfe->cur_frm = NULL;
1855 vpfe->next_frm = NULL;
1856 spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
1857 }
1858
1859 /*
1860 * vpfe_start_streaming : Starts the DMA engine for streaming
1861 * @vb: ptr to vb2_buffer
1862 * @count: number of buffers
1863 */
1864 static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count)
1865 {
1866 struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
1867 struct vpfe_subdev_info *sdinfo;
1868 unsigned long flags;
1869 unsigned long addr;
1870 int ret;
1871
1872 spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
1873
1874 vpfe->field = 0;
1875 vpfe->sequence = 0;
1876
1877 sdinfo = vpfe->current_subdev;
1878
1879 vpfe_attach_irq(vpfe);
1880
1881 vpfe->stopping = false;
1882 init_completion(&vpfe->capture_stop);
1883
1884 if (vpfe->ccdc.ccdc_cfg.if_type == VPFE_RAW_BAYER)
1885 vpfe_ccdc_config_raw(&vpfe->ccdc);
1886 else
1887 vpfe_ccdc_config_ycbcr(&vpfe->ccdc);
1888
1889 /* Get the next frame from the buffer queue */
1890 vpfe->next_frm = list_entry(vpfe->dma_queue.next,
1891 struct vpfe_cap_buffer, list);
1892 vpfe->cur_frm = vpfe->next_frm;
1893 /* Remove buffer from the buffer queue */
1894 list_del(&vpfe->cur_frm->list);
1895 spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
1896
1897 addr = vb2_dma_contig_plane_dma_addr(&vpfe->cur_frm->vb.vb2_buf, 0);
1898
1899 vpfe_set_sdr_addr(&vpfe->ccdc, (unsigned long)(addr));
1900
1901 vpfe_pcr_enable(&vpfe->ccdc, 1);
1902
1903 ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 1);
1904 if (ret < 0) {
1905 vpfe_err(vpfe, "Error in attaching interrupt handle\n");
1906 goto err;
1907 }
1908
1909 return 0;
1910
1911 err:
1912 vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_QUEUED);
1913 vpfe_pcr_enable(&vpfe->ccdc, 0);
1914 return ret;
1915 }
1916
1917 /*
1918 * vpfe_stop_streaming : Stop the DMA engine
1919 * @vq: ptr to vb2_queue
1920 *
1921 * This callback stops the DMA engine and any remaining buffers
1922 * in the DMA queue are released.
1923 */
1924 static void vpfe_stop_streaming(struct vb2_queue *vq)
1925 {
1926 struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
1927 struct vpfe_subdev_info *sdinfo;
1928 int ret;
1929
1930 vpfe_pcr_enable(&vpfe->ccdc, 0);
1931
1932 /* Wait for the last frame to be captured */
1933 vpfe->stopping = true;
1934 wait_for_completion_timeout(&vpfe->capture_stop,
1935 msecs_to_jiffies(250));
1936
1937 vpfe_detach_irq(vpfe);
1938
1939 sdinfo = vpfe->current_subdev;
1940 ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 0);
1941 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
1942 vpfe_dbg(1, vpfe, "stream off failed in subdev\n");
1943
1944 /* release all active buffers */
1945 vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_ERROR);
1946 }
1947
1948 static int vpfe_g_pixelaspect(struct file *file, void *priv,
1949 int type, struct v4l2_fract *f)
1950 {
1951 struct vpfe_device *vpfe = video_drvdata(file);
1952
1953 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1954 vpfe->std_index >= ARRAY_SIZE(vpfe_standards))
1955 return -EINVAL;
1956
1957 *f = vpfe_standards[vpfe->std_index].pixelaspect;
1958
1959 return 0;
1960 }
1961
1962 static int
1963 vpfe_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
1964 {
1965 struct vpfe_device *vpfe = video_drvdata(file);
1966
1967 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1968 vpfe->std_index >= ARRAY_SIZE(vpfe_standards))
1969 return -EINVAL;
1970
1971 switch (s->target) {
1972 case V4L2_SEL_TGT_CROP_BOUNDS:
1973 case V4L2_SEL_TGT_CROP_DEFAULT:
1974 s->r.left = 0;
1975 s->r.top = 0;
1976 s->r.width = vpfe_standards[vpfe->std_index].width;
1977 s->r.height = vpfe_standards[vpfe->std_index].height;
1978 break;
1979
1980 case V4L2_SEL_TGT_CROP:
1981 s->r = vpfe->crop;
1982 break;
1983
1984 default:
1985 return -EINVAL;
1986 }
1987
1988 return 0;
1989 }
1990
1991 static int
1992 vpfe_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
1993 {
1994 struct vpfe_device *vpfe = video_drvdata(file);
1995 struct v4l2_rect cr = vpfe->crop;
1996 struct v4l2_rect r = s->r;
1997 u32 bpp;
1998
1999 /* If streaming is started, return error */
2000 if (vb2_is_busy(&vpfe->buffer_queue)) {
2001 vpfe_err(vpfe, "%s device busy\n", __func__);
2002 return -EBUSY;
2003 }
2004
2005 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2006 s->target != V4L2_SEL_TGT_CROP)
2007 return -EINVAL;
2008
2009 v4l_bound_align_image(&r.width, 0, cr.width, 0,
2010 &r.height, 0, cr.height, 0, 0);
2011
2012 r.left = clamp_t(unsigned int, r.left, 0, cr.width - r.width);
2013 r.top = clamp_t(unsigned int, r.top, 0, cr.height - r.height);
2014
2015 if (s->flags & V4L2_SEL_FLAG_LE && !v4l2_rect_enclosed(&r, &s->r))
2016 return -ERANGE;
2017
2018 if (s->flags & V4L2_SEL_FLAG_GE && !v4l2_rect_enclosed(&s->r, &r))
2019 return -ERANGE;
2020
2021 s->r = vpfe->crop = r;
2022
2023 bpp = __get_bytesperpixel(vpfe, vpfe->current_vpfe_fmt);
2024 vpfe_ccdc_set_image_window(&vpfe->ccdc, &r, bpp);
2025 vpfe->fmt.fmt.pix.width = r.width;
2026 vpfe->fmt.fmt.pix.height = r.height;
2027 vpfe->fmt.fmt.pix.bytesperline =
2028 vpfe_ccdc_get_line_length(&vpfe->ccdc);
2029 vpfe->fmt.fmt.pix.sizeimage = vpfe->fmt.fmt.pix.bytesperline *
2030 vpfe->fmt.fmt.pix.height;
2031
2032 vpfe_dbg(1, vpfe, "cropped (%d,%d)/%dx%d of %dx%d\n",
2033 r.left, r.top, r.width, r.height, cr.width, cr.height);
2034
2035 return 0;
2036 }
2037
2038 static long vpfe_ioctl_default(struct file *file, void *priv,
2039 bool valid_prio, unsigned int cmd, void *param)
2040 {
2041 struct vpfe_device *vpfe = video_drvdata(file);
2042 int ret;
2043
2044 if (!valid_prio) {
2045 vpfe_err(vpfe, "%s device busy\n", __func__);
2046 return -EBUSY;
2047 }
2048
2049 /* If streaming is started, return error */
2050 if (vb2_is_busy(&vpfe->buffer_queue)) {
2051 vpfe_err(vpfe, "%s device busy\n", __func__);
2052 return -EBUSY;
2053 }
2054
2055 switch (cmd) {
2056 case VIDIOC_AM437X_CCDC_CFG:
2057 ret = vpfe_ccdc_set_params(&vpfe->ccdc, (void __user *)param);
2058 if (ret) {
2059 vpfe_dbg(2, vpfe,
2060 "Error setting parameters in CCDC\n");
2061 return ret;
2062 }
2063 ret = vpfe_get_ccdc_image_format(vpfe,
2064 &vpfe->fmt);
2065 if (ret < 0) {
2066 vpfe_dbg(2, vpfe,
2067 "Invalid image format at CCDC\n");
2068 return ret;
2069 }
2070 break;
2071
2072 default:
2073 ret = -ENOTTY;
2074 break;
2075 }
2076
2077 return ret;
2078 }
2079
2080 static const struct vb2_ops vpfe_video_qops = {
2081 .wait_prepare = vb2_ops_wait_prepare,
2082 .wait_finish = vb2_ops_wait_finish,
2083 .queue_setup = vpfe_queue_setup,
2084 .buf_prepare = vpfe_buffer_prepare,
2085 .buf_queue = vpfe_buffer_queue,
2086 .start_streaming = vpfe_start_streaming,
2087 .stop_streaming = vpfe_stop_streaming,
2088 };
2089
2090 /* vpfe capture driver file operations */
2091 static const struct v4l2_file_operations vpfe_fops = {
2092 .owner = THIS_MODULE,
2093 .open = vpfe_open,
2094 .release = vpfe_release,
2095 .read = vb2_fop_read,
2096 .poll = vb2_fop_poll,
2097 .unlocked_ioctl = video_ioctl2,
2098 .mmap = vb2_fop_mmap,
2099 };
2100
2101 /* vpfe capture ioctl operations */
2102 static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
2103 .vidioc_querycap = vpfe_querycap,
2104 .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt,
2105 .vidioc_g_fmt_vid_cap = vpfe_g_fmt,
2106 .vidioc_s_fmt_vid_cap = vpfe_s_fmt,
2107 .vidioc_try_fmt_vid_cap = vpfe_try_fmt,
2108
2109 .vidioc_enum_framesizes = vpfe_enum_size,
2110
2111 .vidioc_enum_input = vpfe_enum_input,
2112 .vidioc_g_input = vpfe_g_input,
2113 .vidioc_s_input = vpfe_s_input,
2114
2115 .vidioc_querystd = vpfe_querystd,
2116 .vidioc_s_std = vpfe_s_std,
2117 .vidioc_g_std = vpfe_g_std,
2118
2119 .vidioc_reqbufs = vb2_ioctl_reqbufs,
2120 .vidioc_create_bufs = vb2_ioctl_create_bufs,
2121 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
2122 .vidioc_querybuf = vb2_ioctl_querybuf,
2123 .vidioc_qbuf = vb2_ioctl_qbuf,
2124 .vidioc_dqbuf = vb2_ioctl_dqbuf,
2125 .vidioc_expbuf = vb2_ioctl_expbuf,
2126 .vidioc_streamon = vb2_ioctl_streamon,
2127 .vidioc_streamoff = vb2_ioctl_streamoff,
2128
2129 .vidioc_log_status = v4l2_ctrl_log_status,
2130 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2131 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2132
2133 .vidioc_g_pixelaspect = vpfe_g_pixelaspect,
2134 .vidioc_g_selection = vpfe_g_selection,
2135 .vidioc_s_selection = vpfe_s_selection,
2136
2137 .vidioc_default = vpfe_ioctl_default,
2138 };
2139
2140 static int
2141 vpfe_async_bound(struct v4l2_async_notifier *notifier,
2142 struct v4l2_subdev *subdev,
2143 struct v4l2_async_subdev *asd)
2144 {
2145 struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,
2146 struct vpfe_device, v4l2_dev);
2147 struct v4l2_subdev_mbus_code_enum mbus_code;
2148 struct vpfe_subdev_info *sdinfo;
2149 struct vpfe_fmt *fmt;
2150 int ret = 0;
2151 bool found = false;
2152 int i, j, k;
2153
2154 for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
2155 if (vpfe->cfg->asd[i]->match.fwnode ==
2156 asd[i].match.fwnode) {
2157 sdinfo = &vpfe->cfg->sub_devs[i];
2158 vpfe->sd[i] = subdev;
2159 vpfe->sd[i]->grp_id = sdinfo->grp_id;
2160 found = true;
2161 break;
2162 }
2163 }
2164
2165 if (!found) {
2166 vpfe_info(vpfe, "sub device (%s) not matched\n", subdev->name);
2167 return -EINVAL;
2168 }
2169
2170 vpfe->video_dev.tvnorms |= sdinfo->inputs[0].std;
2171
2172 vpfe->num_active_fmt = 0;
2173 for (j = 0, i = 0; (ret != -EINVAL); ++j) {
2174 memset(&mbus_code, 0, sizeof(mbus_code));
2175 mbus_code.index = j;
2176 mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
2177 ret = v4l2_subdev_call(subdev, pad, enum_mbus_code,
2178 NULL, &mbus_code);
2179 if (ret)
2180 continue;
2181
2182 vpfe_dbg(3, vpfe,
2183 "subdev %s: code: %04x idx: %d\n",
2184 subdev->name, mbus_code.code, j);
2185
2186 for (k = 0; k < ARRAY_SIZE(formats); k++) {
2187 fmt = &formats[k];
2188 if (mbus_code.code != fmt->code)
2189 continue;
2190 vpfe->active_fmt[i] = fmt;
2191 vpfe_dbg(3, vpfe,
2192 "matched fourcc: %s code: %04x idx: %d\n",
2193 print_fourcc(fmt->fourcc), mbus_code.code, i);
2194 vpfe->num_active_fmt = ++i;
2195 }
2196 }
2197
2198 if (!i) {
2199 vpfe_err(vpfe, "No suitable format reported by subdev %s\n",
2200 subdev->name);
2201 return -EINVAL;
2202 }
2203 return 0;
2204 }
2205
2206 static int vpfe_probe_complete(struct vpfe_device *vpfe)
2207 {
2208 struct video_device *vdev;
2209 struct vb2_queue *q;
2210 int err;
2211
2212 spin_lock_init(&vpfe->dma_queue_lock);
2213 mutex_init(&vpfe->lock);
2214
2215 vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2216
2217 /* set first sub device as current one */
2218 vpfe->current_subdev = &vpfe->cfg->sub_devs[0];
2219 vpfe->v4l2_dev.ctrl_handler = vpfe->sd[0]->ctrl_handler;
2220
2221 err = vpfe_set_input(vpfe, 0);
2222 if (err)
2223 goto probe_out;
2224
2225 /* Initialize videobuf2 queue as per the buffer type */
2226 q = &vpfe->buffer_queue;
2227 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2228 q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
2229 q->drv_priv = vpfe;
2230 q->ops = &vpfe_video_qops;
2231 q->mem_ops = &vb2_dma_contig_memops;
2232 q->buf_struct_size = sizeof(struct vpfe_cap_buffer);
2233 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
2234 q->lock = &vpfe->lock;
2235 q->min_buffers_needed = 1;
2236 q->dev = vpfe->pdev;
2237
2238 err = vb2_queue_init(q);
2239 if (err) {
2240 vpfe_err(vpfe, "vb2_queue_init() failed\n");
2241 goto probe_out;
2242 }
2243
2244 INIT_LIST_HEAD(&vpfe->dma_queue);
2245
2246 vdev = &vpfe->video_dev;
2247 strscpy(vdev->name, VPFE_MODULE_NAME, sizeof(vdev->name));
2248 vdev->release = video_device_release_empty;
2249 vdev->fops = &vpfe_fops;
2250 vdev->ioctl_ops = &vpfe_ioctl_ops;
2251 vdev->v4l2_dev = &vpfe->v4l2_dev;
2252 vdev->vfl_dir = VFL_DIR_RX;
2253 vdev->queue = q;
2254 vdev->lock = &vpfe->lock;
2255 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
2256 V4L2_CAP_READWRITE;
2257 video_set_drvdata(vdev, vpfe);
2258 err = video_register_device(&vpfe->video_dev, VFL_TYPE_VIDEO, -1);
2259 if (err) {
2260 vpfe_err(vpfe,
2261 "Unable to register video device.\n");
2262 goto probe_out;
2263 }
2264
2265 return 0;
2266
2267 probe_out:
2268 v4l2_device_unregister(&vpfe->v4l2_dev);
2269 return err;
2270 }
2271
2272 static int vpfe_async_complete(struct v4l2_async_notifier *notifier)
2273 {
2274 struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,
2275 struct vpfe_device, v4l2_dev);
2276
2277 return vpfe_probe_complete(vpfe);
2278 }
2279
2280 static const struct v4l2_async_notifier_operations vpfe_async_ops = {
2281 .bound = vpfe_async_bound,
2282 .complete = vpfe_async_complete,
2283 };
2284
2285 static struct vpfe_config *
2286 vpfe_get_pdata(struct vpfe_device *vpfe)
2287 {
2288 struct device_node *endpoint = NULL;
2289 struct device *dev = vpfe->pdev;
2290 struct vpfe_subdev_info *sdinfo;
2291 struct vpfe_config *pdata;
2292 unsigned int flags;
2293 unsigned int i;
2294 int err;
2295
2296 dev_dbg(dev, "vpfe_get_pdata\n");
2297
2298 v4l2_async_notifier_init(&vpfe->notifier);
2299
2300 if (!IS_ENABLED(CONFIG_OF) || !dev->of_node)
2301 return dev->platform_data;
2302
2303 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
2304 if (!pdata)
2305 return NULL;
2306
2307 for (i = 0; ; i++) {
2308 struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
2309 struct device_node *rem;
2310
2311 endpoint = of_graph_get_next_endpoint(dev->of_node, endpoint);
2312 if (!endpoint)
2313 break;
2314
2315 sdinfo = &pdata->sub_devs[i];
2316 sdinfo->grp_id = 0;
2317
2318 /* we only support camera */
2319 sdinfo->inputs[0].index = i;
2320 strscpy(sdinfo->inputs[0].name, "Camera",
2321 sizeof(sdinfo->inputs[0].name));
2322 sdinfo->inputs[0].type = V4L2_INPUT_TYPE_CAMERA;
2323 sdinfo->inputs[0].std = V4L2_STD_ALL;
2324 sdinfo->inputs[0].capabilities = V4L2_IN_CAP_STD;
2325
2326 sdinfo->can_route = 0;
2327 sdinfo->routes = NULL;
2328
2329 of_property_read_u32(endpoint, "ti,am437x-vpfe-interface",
2330 &sdinfo->vpfe_param.if_type);
2331 if (sdinfo->vpfe_param.if_type < 0 ||
2332 sdinfo->vpfe_param.if_type > 4) {
2333 sdinfo->vpfe_param.if_type = VPFE_RAW_BAYER;
2334 }
2335
2336 err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
2337 &bus_cfg);
2338 if (err) {
2339 dev_err(dev, "Could not parse the endpoint\n");
2340 goto cleanup;
2341 }
2342
2343 sdinfo->vpfe_param.bus_width = bus_cfg.bus.parallel.bus_width;
2344
2345 if (sdinfo->vpfe_param.bus_width < 8 ||
2346 sdinfo->vpfe_param.bus_width > 16) {
2347 dev_err(dev, "Invalid bus width.\n");
2348 goto cleanup;
2349 }
2350
2351 flags = bus_cfg.bus.parallel.flags;
2352
2353 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
2354 sdinfo->vpfe_param.hdpol = 1;
2355
2356 if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
2357 sdinfo->vpfe_param.vdpol = 1;
2358
2359 rem = of_graph_get_remote_port_parent(endpoint);
2360 if (!rem) {
2361 dev_err(dev, "Remote device at %pOF not found\n",
2362 endpoint);
2363 goto cleanup;
2364 }
2365
2366 pdata->asd[i] = v4l2_async_notifier_add_fwnode_subdev(
2367 &vpfe->notifier, of_fwnode_handle(rem),
2368 sizeof(struct v4l2_async_subdev));
2369 of_node_put(rem);
2370 if (IS_ERR(pdata->asd[i]))
2371 goto cleanup;
2372 }
2373
2374 of_node_put(endpoint);
2375 return pdata;
2376
2377 cleanup:
2378 v4l2_async_notifier_cleanup(&vpfe->notifier);
2379 of_node_put(endpoint);
2380 return NULL;
2381 }
2382
2383 /*
2384 * vpfe_probe : This function creates device entries by register
2385 * itself to the V4L2 driver and initializes fields of each
2386 * device objects
2387 */
2388 static int vpfe_probe(struct platform_device *pdev)
2389 {
2390 struct vpfe_config *vpfe_cfg;
2391 struct vpfe_device *vpfe;
2392 struct vpfe_ccdc *ccdc;
2393 struct resource *res;
2394 int ret;
2395
2396 vpfe = devm_kzalloc(&pdev->dev, sizeof(*vpfe), GFP_KERNEL);
2397 if (!vpfe)
2398 return -ENOMEM;
2399
2400 vpfe->pdev = &pdev->dev;
2401
2402 vpfe_cfg = vpfe_get_pdata(vpfe);
2403 if (!vpfe_cfg) {
2404 dev_err(&pdev->dev, "No platform data\n");
2405 return -EINVAL;
2406 }
2407
2408 vpfe->cfg = vpfe_cfg;
2409 ccdc = &vpfe->ccdc;
2410
2411 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2412 ccdc->ccdc_cfg.base_addr = devm_ioremap_resource(&pdev->dev, res);
2413 if (IS_ERR(ccdc->ccdc_cfg.base_addr)) {
2414 ret = PTR_ERR(ccdc->ccdc_cfg.base_addr);
2415 goto probe_out_cleanup;
2416 }
2417
2418 ret = platform_get_irq(pdev, 0);
2419 if (ret <= 0) {
2420 ret = -ENODEV;
2421 goto probe_out_cleanup;
2422 }
2423 vpfe->irq = ret;
2424
2425 ret = devm_request_irq(vpfe->pdev, vpfe->irq, vpfe_isr, 0,
2426 "vpfe_capture0", vpfe);
2427 if (ret) {
2428 dev_err(&pdev->dev, "Unable to request interrupt\n");
2429 ret = -EINVAL;
2430 goto probe_out_cleanup;
2431 }
2432
2433 ret = v4l2_device_register(&pdev->dev, &vpfe->v4l2_dev);
2434 if (ret) {
2435 vpfe_err(vpfe,
2436 "Unable to register v4l2 device.\n");
2437 goto probe_out_cleanup;
2438 }
2439
2440 /* set the driver data in platform device */
2441 platform_set_drvdata(pdev, vpfe);
2442 /* Enabling module functional clock */
2443 pm_runtime_enable(&pdev->dev);
2444
2445 /* for now just enable it here instead of waiting for the open */
2446 pm_runtime_get_sync(&pdev->dev);
2447
2448 vpfe_ccdc_config_defaults(ccdc);
2449
2450 pm_runtime_put_sync(&pdev->dev);
2451
2452 vpfe->sd = devm_kcalloc(&pdev->dev,
2453 ARRAY_SIZE(vpfe->cfg->asd),
2454 sizeof(struct v4l2_subdev *),
2455 GFP_KERNEL);
2456 if (!vpfe->sd) {
2457 ret = -ENOMEM;
2458 goto probe_out_v4l2_unregister;
2459 }
2460
2461 vpfe->notifier.ops = &vpfe_async_ops;
2462 ret = v4l2_async_notifier_register(&vpfe->v4l2_dev, &vpfe->notifier);
2463 if (ret) {
2464 vpfe_err(vpfe, "Error registering async notifier\n");
2465 ret = -EINVAL;
2466 goto probe_out_v4l2_unregister;
2467 }
2468
2469 return 0;
2470
2471 probe_out_v4l2_unregister:
2472 v4l2_device_unregister(&vpfe->v4l2_dev);
2473 probe_out_cleanup:
2474 v4l2_async_notifier_cleanup(&vpfe->notifier);
2475 return ret;
2476 }
2477
2478 /*
2479 * vpfe_remove : It un-register device from V4L2 driver
2480 */
2481 static int vpfe_remove(struct platform_device *pdev)
2482 {
2483 struct vpfe_device *vpfe = platform_get_drvdata(pdev);
2484
2485 pm_runtime_disable(&pdev->dev);
2486
2487 v4l2_async_notifier_unregister(&vpfe->notifier);
2488 v4l2_async_notifier_cleanup(&vpfe->notifier);
2489 v4l2_device_unregister(&vpfe->v4l2_dev);
2490 video_unregister_device(&vpfe->video_dev);
2491
2492 return 0;
2493 }
2494
2495 #ifdef CONFIG_PM_SLEEP
2496
2497 static void vpfe_save_context(struct vpfe_ccdc *ccdc)
2498 {
2499 ccdc->ccdc_ctx[VPFE_PCR >> 2] = vpfe_reg_read(ccdc, VPFE_PCR);
2500 ccdc->ccdc_ctx[VPFE_SYNMODE >> 2] = vpfe_reg_read(ccdc, VPFE_SYNMODE);
2501 ccdc->ccdc_ctx[VPFE_SDOFST >> 2] = vpfe_reg_read(ccdc, VPFE_SDOFST);
2502 ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2] = vpfe_reg_read(ccdc, VPFE_SDR_ADDR);
2503 ccdc->ccdc_ctx[VPFE_CLAMP >> 2] = vpfe_reg_read(ccdc, VPFE_CLAMP);
2504 ccdc->ccdc_ctx[VPFE_DCSUB >> 2] = vpfe_reg_read(ccdc, VPFE_DCSUB);
2505 ccdc->ccdc_ctx[VPFE_COLPTN >> 2] = vpfe_reg_read(ccdc, VPFE_COLPTN);
2506 ccdc->ccdc_ctx[VPFE_BLKCMP >> 2] = vpfe_reg_read(ccdc, VPFE_BLKCMP);
2507 ccdc->ccdc_ctx[VPFE_VDINT >> 2] = vpfe_reg_read(ccdc, VPFE_VDINT);
2508 ccdc->ccdc_ctx[VPFE_ALAW >> 2] = vpfe_reg_read(ccdc, VPFE_ALAW);
2509 ccdc->ccdc_ctx[VPFE_REC656IF >> 2] = vpfe_reg_read(ccdc, VPFE_REC656IF);
2510 ccdc->ccdc_ctx[VPFE_CCDCFG >> 2] = vpfe_reg_read(ccdc, VPFE_CCDCFG);
2511 ccdc->ccdc_ctx[VPFE_CULLING >> 2] = vpfe_reg_read(ccdc, VPFE_CULLING);
2512 ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2] = vpfe_reg_read(ccdc,
2513 VPFE_HD_VD_WID);
2514 ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2] = vpfe_reg_read(ccdc,
2515 VPFE_PIX_LINES);
2516 ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2] = vpfe_reg_read(ccdc,
2517 VPFE_HORZ_INFO);
2518 ccdc->ccdc_ctx[VPFE_VERT_START >> 2] = vpfe_reg_read(ccdc,
2519 VPFE_VERT_START);
2520 ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2] = vpfe_reg_read(ccdc,
2521 VPFE_VERT_LINES);
2522 ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2] = vpfe_reg_read(ccdc,
2523 VPFE_HSIZE_OFF);
2524 }
2525
2526 static int vpfe_suspend(struct device *dev)
2527 {
2528 struct vpfe_device *vpfe = dev_get_drvdata(dev);
2529 struct vpfe_ccdc *ccdc = &vpfe->ccdc;
2530
2531 /* only do full suspend if streaming has started */
2532 if (vb2_start_streaming_called(&vpfe->buffer_queue)) {
2533 pm_runtime_get_sync(dev);
2534 vpfe_config_enable(ccdc, 1);
2535
2536 /* Save VPFE context */
2537 vpfe_save_context(ccdc);
2538
2539 /* Disable CCDC */
2540 vpfe_pcr_enable(ccdc, 0);
2541 vpfe_config_enable(ccdc, 0);
2542
2543 /* Disable both master and slave clock */
2544 pm_runtime_put_sync(dev);
2545 }
2546
2547 /* Select sleep pin state */
2548 pinctrl_pm_select_sleep_state(dev);
2549
2550 return 0;
2551 }
2552
2553 static void vpfe_restore_context(struct vpfe_ccdc *ccdc)
2554 {
2555 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SYNMODE >> 2], VPFE_SYNMODE);
2556 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CULLING >> 2], VPFE_CULLING);
2557 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDOFST >> 2], VPFE_SDOFST);
2558 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2], VPFE_SDR_ADDR);
2559 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CLAMP >> 2], VPFE_CLAMP);
2560 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_DCSUB >> 2], VPFE_DCSUB);
2561 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_COLPTN >> 2], VPFE_COLPTN);
2562 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_BLKCMP >> 2], VPFE_BLKCMP);
2563 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VDINT >> 2], VPFE_VDINT);
2564 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_ALAW >> 2], VPFE_ALAW);
2565 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_REC656IF >> 2], VPFE_REC656IF);
2566 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CCDCFG >> 2], VPFE_CCDCFG);
2567 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PCR >> 2], VPFE_PCR);
2568 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2],
2569 VPFE_HD_VD_WID);
2570 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2],
2571 VPFE_PIX_LINES);
2572 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2],
2573 VPFE_HORZ_INFO);
2574 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_START >> 2],
2575 VPFE_VERT_START);
2576 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2],
2577 VPFE_VERT_LINES);
2578 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2],
2579 VPFE_HSIZE_OFF);
2580 }
2581
2582 static int vpfe_resume(struct device *dev)
2583 {
2584 struct vpfe_device *vpfe = dev_get_drvdata(dev);
2585 struct vpfe_ccdc *ccdc = &vpfe->ccdc;
2586
2587 /* only do full resume if streaming has started */
2588 if (vb2_start_streaming_called(&vpfe->buffer_queue)) {
2589 /* Enable both master and slave clock */
2590 pm_runtime_get_sync(dev);
2591 vpfe_config_enable(ccdc, 1);
2592
2593 /* Restore VPFE context */
2594 vpfe_restore_context(ccdc);
2595
2596 vpfe_config_enable(ccdc, 0);
2597 pm_runtime_put_sync(dev);
2598 }
2599
2600 /* Select default pin state */
2601 pinctrl_pm_select_default_state(dev);
2602
2603 return 0;
2604 }
2605
2606 #endif
2607
2608 static SIMPLE_DEV_PM_OPS(vpfe_pm_ops, vpfe_suspend, vpfe_resume);
2609
2610 static const struct of_device_id vpfe_of_match[] = {
2611 { .compatible = "ti,am437x-vpfe", },
2612 { /* sentinel */ },
2613 };
2614 MODULE_DEVICE_TABLE(of, vpfe_of_match);
2615
2616 static struct platform_driver vpfe_driver = {
2617 .probe = vpfe_probe,
2618 .remove = vpfe_remove,
2619 .driver = {
2620 .name = VPFE_MODULE_NAME,
2621 .pm = &vpfe_pm_ops,
2622 .of_match_table = of_match_ptr(vpfe_of_match),
2623 },
2624 };
2625
2626 module_platform_driver(vpfe_driver);
2627
2628 MODULE_AUTHOR("Texas Instruments");
2629 MODULE_DESCRIPTION("TI AM437x VPFE driver");
2630 MODULE_LICENSE("GPL");
2631 MODULE_VERSION(VPFE_VERSION);
Linux with added FPC-III support