2 * TI VPFE capture Driver
4 * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
6 * Benoit Parrot <bparrot@ti.com>
7 * Lad, Prabhakar <prabhakar.csengg@gmail.com>
9 * This program is free software; you may redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
14 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
15 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
16 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
17 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
18 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 #include <linux/delay.h>
24 #include <linux/err.h>
25 #include <linux/init.h>
26 #include <linux/interrupt.h>
28 #include <linux/module.h>
29 #include <linux/pinctrl/consumer.h>
30 #include <linux/platform_device.h>
31 #include <linux/pm_runtime.h>
32 #include <linux/slab.h>
33 #include <linux/uaccess.h>
34 #include <linux/videodev2.h>
36 #include <media/v4l2-common.h>
37 #include <media/v4l2-ctrls.h>
38 #include <media/v4l2-event.h>
39 #include <media/v4l2-of.h>
41 #include "am437x-vpfe.h"
43 #define VPFE_MODULE_NAME "vpfe"
44 #define VPFE_VERSION "0.1.0"
47 module_param(debug, int, 0644);
48 MODULE_PARM_DESC(debug, "Debug level 0-8");
50 #define vpfe_dbg(level, dev, fmt, arg...) \
51 v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ##arg)
52 #define vpfe_info(dev, fmt, arg...) \
53 v4l2_info(&dev->v4l2_dev, fmt, ##arg)
54 #define vpfe_err(dev, fmt, arg...) \
55 v4l2_err(&dev->v4l2_dev, fmt, ##arg)
57 /* standard information */
58 struct vpfe_standard {
62 struct v4l2_fract pixelaspect;
66 static const struct vpfe_standard vpfe_standards[] = {
67 {V4L2_STD_525_60, 720, 480, {11, 10}, 1},
68 {V4L2_STD_625_50, 720, 576, {54, 59}, 1},
77 * struct vpfe_fmt - VPFE media bus format information
78 * @name: V4L2 format description
79 * @code: V4L2 media bus format code
80 * @shifted: V4L2 media bus format code for the same pixel layout but
81 * shifted to be 8 bits per pixel. =0 if format is not shiftable.
82 * @pixelformat: V4L2 pixel format FCC identifier
83 * @width: Bits per pixel (when transferred over a bus)
84 * @bpp: Bytes per pixel (when stored in memory)
85 * @supported: Indicates format supported by subdev
97 static struct vpfe_fmt formats[] = {
99 .name = "YUV 4:2:2 packed, YCbYCr",
100 .fourcc = V4L2_PIX_FMT_YUYV,
101 .code = MEDIA_BUS_FMT_YUYV8_2X8,
108 .name = "YUV 4:2:2 packed, CbYCrY",
109 .fourcc = V4L2_PIX_FMT_UYVY,
110 .code = MEDIA_BUS_FMT_UYVY8_2X8,
117 .name = "YUV 4:2:2 packed, YCrYCb",
118 .fourcc = V4L2_PIX_FMT_YVYU,
119 .code = MEDIA_BUS_FMT_YVYU8_2X8,
126 .name = "YUV 4:2:2 packed, CrYCbY",
127 .fourcc = V4L2_PIX_FMT_VYUY,
128 .code = MEDIA_BUS_FMT_VYUY8_2X8,
136 .fourcc = V4L2_PIX_FMT_SBGGR8,
137 .code = MEDIA_BUS_FMT_SBGGR8_1X8,
145 .fourcc = V4L2_PIX_FMT_SGBRG8,
146 .code = MEDIA_BUS_FMT_SGBRG8_1X8,
154 .fourcc = V4L2_PIX_FMT_SGRBG8,
155 .code = MEDIA_BUS_FMT_SGRBG8_1X8,
163 .fourcc = V4L2_PIX_FMT_SRGGB8,
164 .code = MEDIA_BUS_FMT_SRGGB8_1X8,
171 .name = "RGB565 (LE)",
172 .fourcc = V4L2_PIX_FMT_RGB565,
173 .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
180 .name = "RGB565 (BE)",
181 .fourcc = V4L2_PIX_FMT_RGB565X,
182 .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
192 __vpfe_get_format(struct vpfe_device *vpfe,
193 struct v4l2_format *format, unsigned int *bpp);
195 static struct vpfe_fmt *find_format_by_code(unsigned int code)
197 struct vpfe_fmt *fmt;
200 for (k = 0; k < ARRAY_SIZE(formats); k++) {
202 if (fmt->code == code)
209 static struct vpfe_fmt *find_format_by_pix(unsigned int pixelformat)
211 struct vpfe_fmt *fmt;
214 for (k = 0; k < ARRAY_SIZE(formats); k++) {
216 if (fmt->fourcc == pixelformat)
224 mbus_to_pix(struct vpfe_device *vpfe,
225 const struct v4l2_mbus_framefmt *mbus,
226 struct v4l2_pix_format *pix, unsigned int *bpp)
228 struct vpfe_subdev_info *sdinfo = vpfe->current_subdev;
229 unsigned int bus_width = sdinfo->vpfe_param.bus_width;
230 struct vpfe_fmt *fmt;
232 fmt = find_format_by_code(mbus->code);
233 if (WARN_ON(fmt == NULL)) {
234 pr_err("Invalid mbus code set\n");
239 memset(pix, 0, sizeof(*pix));
240 v4l2_fill_pix_format(pix, mbus);
241 pix->pixelformat = fmt->fourcc;
242 *bpp = (bus_width == 10) ? fmt->l.bpp : fmt->s.bpp;
244 /* pitch should be 32 bytes aligned */
245 pix->bytesperline = ALIGN(pix->width * *bpp, 32);
246 pix->sizeimage = pix->bytesperline * pix->height;
249 static void pix_to_mbus(struct vpfe_device *vpfe,
250 struct v4l2_pix_format *pix_fmt,
251 struct v4l2_mbus_framefmt *mbus_fmt)
253 struct vpfe_fmt *fmt;
255 fmt = find_format_by_pix(pix_fmt->pixelformat);
257 /* default to first entry */
258 vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n",
259 pix_fmt->pixelformat);
263 memset(mbus_fmt, 0, sizeof(*mbus_fmt));
264 v4l2_fill_mbus_format(mbus_fmt, pix_fmt, fmt->code);
267 /* Print Four-character-code (FOURCC) */
268 static char *print_fourcc(u32 fmt)
272 code[0] = (unsigned char)(fmt & 0xff);
273 code[1] = (unsigned char)((fmt >> 8) & 0xff);
274 code[2] = (unsigned char)((fmt >> 16) & 0xff);
275 code[3] = (unsigned char)((fmt >> 24) & 0xff);
282 cmp_v4l2_format(const struct v4l2_format *lhs, const struct v4l2_format *rhs)
284 return lhs->type == rhs->type &&
285 lhs->fmt.pix.width == rhs->fmt.pix.width &&
286 lhs->fmt.pix.height == rhs->fmt.pix.height &&
287 lhs->fmt.pix.pixelformat == rhs->fmt.pix.pixelformat &&
288 lhs->fmt.pix.field == rhs->fmt.pix.field &&
289 lhs->fmt.pix.colorspace == rhs->fmt.pix.colorspace &&
290 lhs->fmt.pix.ycbcr_enc == rhs->fmt.pix.ycbcr_enc &&
291 lhs->fmt.pix.quantization == rhs->fmt.pix.quantization &&
292 lhs->fmt.pix.xfer_func == rhs->fmt.pix.xfer_func;
295 static inline u32 vpfe_reg_read(struct vpfe_ccdc *ccdc, u32 offset)
297 return ioread32(ccdc->ccdc_cfg.base_addr + offset);
300 static inline void vpfe_reg_write(struct vpfe_ccdc *ccdc, u32 val, u32 offset)
302 iowrite32(val, ccdc->ccdc_cfg.base_addr + offset);
305 static inline struct vpfe_device *to_vpfe(struct vpfe_ccdc *ccdc)
307 return container_of(ccdc, struct vpfe_device, ccdc);
310 static inline struct vpfe_cap_buffer *to_vpfe_buffer(struct vb2_buffer *vb)
312 return container_of(vb, struct vpfe_cap_buffer, vb);
315 static inline void vpfe_pcr_enable(struct vpfe_ccdc *ccdc, int flag)
317 vpfe_reg_write(ccdc, !!flag, VPFE_PCR);
320 static void vpfe_config_enable(struct vpfe_ccdc *ccdc, int flag)
325 cfg = vpfe_reg_read(ccdc, VPFE_CONFIG);
326 cfg &= ~(VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT);
328 cfg = VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT;
331 vpfe_reg_write(ccdc, cfg, VPFE_CONFIG);
334 static void vpfe_ccdc_setwin(struct vpfe_ccdc *ccdc,
335 struct v4l2_rect *image_win,
336 enum ccdc_frmfmt frm_fmt,
339 int horz_start, horz_nr_pixels;
340 int vert_start, vert_nr_lines;
344 * ppc - per pixel count. indicates how many pixels per cell
345 * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
346 * raw capture this is 1
348 horz_start = image_win->left * bpp;
349 horz_nr_pixels = (image_win->width * bpp) - 1;
350 vpfe_reg_write(ccdc, (horz_start << VPFE_HORZ_INFO_SPH_SHIFT) |
351 horz_nr_pixels, VPFE_HORZ_INFO);
353 vert_start = image_win->top;
355 if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
356 vert_nr_lines = (image_win->height >> 1) - 1;
358 /* Since first line doesn't have any data */
360 /* configure VDINT0 */
361 val = (vert_start << VPFE_VDINT_VDINT0_SHIFT);
363 /* Since first line doesn't have any data */
365 vert_nr_lines = image_win->height - 1;
367 * configure VDINT0 and VDINT1. VDINT1 will be at half
370 mid_img = vert_start + (image_win->height / 2);
371 val = (vert_start << VPFE_VDINT_VDINT0_SHIFT) |
372 (mid_img & VPFE_VDINT_VDINT1_MASK);
375 vpfe_reg_write(ccdc, val, VPFE_VDINT);
377 vpfe_reg_write(ccdc, (vert_start << VPFE_VERT_START_SLV0_SHIFT) |
378 vert_start, VPFE_VERT_START);
379 vpfe_reg_write(ccdc, vert_nr_lines, VPFE_VERT_LINES);
382 static void vpfe_reg_dump(struct vpfe_ccdc *ccdc)
384 struct vpfe_device *vpfe = to_vpfe(ccdc);
386 vpfe_dbg(3, vpfe, "ALAW: 0x%x\n", vpfe_reg_read(ccdc, VPFE_ALAW));
387 vpfe_dbg(3, vpfe, "CLAMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_CLAMP));
388 vpfe_dbg(3, vpfe, "DCSUB: 0x%x\n", vpfe_reg_read(ccdc, VPFE_DCSUB));
389 vpfe_dbg(3, vpfe, "BLKCMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_BLKCMP));
390 vpfe_dbg(3, vpfe, "COLPTN: 0x%x\n", vpfe_reg_read(ccdc, VPFE_COLPTN));
391 vpfe_dbg(3, vpfe, "SDOFST: 0x%x\n", vpfe_reg_read(ccdc, VPFE_SDOFST));
392 vpfe_dbg(3, vpfe, "SYN_MODE: 0x%x\n",
393 vpfe_reg_read(ccdc, VPFE_SYNMODE));
394 vpfe_dbg(3, vpfe, "HSIZE_OFF: 0x%x\n",
395 vpfe_reg_read(ccdc, VPFE_HSIZE_OFF));
396 vpfe_dbg(3, vpfe, "HORZ_INFO: 0x%x\n",
397 vpfe_reg_read(ccdc, VPFE_HORZ_INFO));
398 vpfe_dbg(3, vpfe, "VERT_START: 0x%x\n",
399 vpfe_reg_read(ccdc, VPFE_VERT_START));
400 vpfe_dbg(3, vpfe, "VERT_LINES: 0x%x\n",
401 vpfe_reg_read(ccdc, VPFE_VERT_LINES));
405 vpfe_ccdc_validate_param(struct vpfe_ccdc *ccdc,
406 struct vpfe_ccdc_config_params_raw *ccdcparam)
408 struct vpfe_device *vpfe = to_vpfe(ccdc);
409 u8 max_gamma, max_data;
411 if (!ccdcparam->alaw.enable)
414 max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd);
415 max_data = ccdc_data_size_max_bit(ccdcparam->data_sz);
417 if (ccdcparam->alaw.gamma_wd > VPFE_CCDC_GAMMA_BITS_09_0 ||
418 ccdcparam->alaw.gamma_wd < VPFE_CCDC_GAMMA_BITS_15_6 ||
419 max_gamma > max_data) {
420 vpfe_dbg(1, vpfe, "Invalid data line select\n");
428 vpfe_ccdc_update_raw_params(struct vpfe_ccdc *ccdc,
429 struct vpfe_ccdc_config_params_raw *raw_params)
431 struct vpfe_ccdc_config_params_raw *config_params =
432 &ccdc->ccdc_cfg.bayer.config_params;
434 *config_params = *raw_params;
438 * vpfe_ccdc_restore_defaults()
439 * This function will write defaults to all CCDC registers
441 static void vpfe_ccdc_restore_defaults(struct vpfe_ccdc *ccdc)
446 vpfe_pcr_enable(ccdc, 0);
448 /* set all registers to default value */
449 for (i = 4; i <= 0x94; i += 4)
450 vpfe_reg_write(ccdc, 0, i);
452 vpfe_reg_write(ccdc, VPFE_NO_CULLING, VPFE_CULLING);
453 vpfe_reg_write(ccdc, VPFE_CCDC_GAMMA_BITS_11_2, VPFE_ALAW);
456 static int vpfe_ccdc_close(struct vpfe_ccdc *ccdc, struct device *dev)
458 int dma_cntl, i, pcr;
460 /* If the CCDC module is still busy wait for it to be done */
461 for (i = 0; i < 10; i++) {
462 usleep_range(5000, 6000);
463 pcr = vpfe_reg_read(ccdc, VPFE_PCR);
467 /* make sure it it is disabled */
468 vpfe_pcr_enable(ccdc, 0);
471 /* Disable CCDC by resetting all register to default POR values */
472 vpfe_ccdc_restore_defaults(ccdc);
474 /* if DMA_CNTL overflow bit is set. Clear it
475 * It appears to take a while for this to become quiescent ~20ms
477 for (i = 0; i < 10; i++) {
478 dma_cntl = vpfe_reg_read(ccdc, VPFE_DMA_CNTL);
479 if (!(dma_cntl & VPFE_DMA_CNTL_OVERFLOW))
482 /* Clear the overflow bit */
483 vpfe_reg_write(ccdc, dma_cntl, VPFE_DMA_CNTL);
484 usleep_range(5000, 6000);
487 /* Disabled the module at the CONFIG level */
488 vpfe_config_enable(ccdc, 0);
490 pm_runtime_put_sync(dev);
495 static int vpfe_ccdc_set_params(struct vpfe_ccdc *ccdc, void __user *params)
497 struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
498 struct vpfe_ccdc_config_params_raw raw_params;
501 if (ccdc->ccdc_cfg.if_type != VPFE_RAW_BAYER)
504 x = copy_from_user(&raw_params, params, sizeof(raw_params));
507 "vpfe_ccdc_set_params: error in copying ccdc params, %d\n",
512 if (!vpfe_ccdc_validate_param(ccdc, &raw_params)) {
513 vpfe_ccdc_update_raw_params(ccdc, &raw_params);
521 * vpfe_ccdc_config_ycbcr()
522 * This function will configure CCDC for YCbCr video capture
524 static void vpfe_ccdc_config_ycbcr(struct vpfe_ccdc *ccdc)
526 struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
527 struct ccdc_params_ycbcr *params = &ccdc->ccdc_cfg.ycbcr;
530 vpfe_dbg(3, vpfe, "vpfe_ccdc_config_ycbcr:\n");
532 * first restore the CCDC registers to default values
533 * This is important since we assume default values to be set in
534 * a lot of registers that we didn't touch
536 vpfe_ccdc_restore_defaults(ccdc);
539 * configure pixel format, frame format, configure video frame
540 * format, enable output to SDRAM, enable internal timing generator
543 syn_mode = (((params->pix_fmt & VPFE_SYN_MODE_INPMOD_MASK) <<
544 VPFE_SYN_MODE_INPMOD_SHIFT) |
545 ((params->frm_fmt & VPFE_SYN_FLDMODE_MASK) <<
546 VPFE_SYN_FLDMODE_SHIFT) | VPFE_VDHDEN_ENABLE |
547 VPFE_WEN_ENABLE | VPFE_DATA_PACK_ENABLE);
549 /* setup BT.656 sync mode */
550 if (params->bt656_enable) {
551 vpfe_reg_write(ccdc, VPFE_REC656IF_BT656_EN, VPFE_REC656IF);
554 * configure the FID, VD, HD pin polarity,
555 * fld,hd pol positive, vd negative, 8-bit data
557 syn_mode |= VPFE_SYN_MODE_VD_POL_NEGATIVE;
558 if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)
559 syn_mode |= VPFE_SYN_MODE_10BITS;
561 syn_mode |= VPFE_SYN_MODE_8BITS;
563 /* y/c external sync mode */
564 syn_mode |= (((params->fid_pol & VPFE_FID_POL_MASK) <<
565 VPFE_FID_POL_SHIFT) |
566 ((params->hd_pol & VPFE_HD_POL_MASK) <<
568 ((params->vd_pol & VPFE_VD_POL_MASK) <<
571 vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);
573 /* configure video window */
574 vpfe_ccdc_setwin(ccdc, ¶ms->win,
575 params->frm_fmt, params->bytesperpixel);
578 * configure the order of y cb cr in SDRAM, and disable latch
579 * internal register on vsync
581 if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)
583 (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |
584 VPFE_LATCH_ON_VSYNC_DISABLE |
585 VPFE_CCDCFG_BW656_10BIT, VPFE_CCDCFG);
588 (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |
589 VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);
592 * configure the horizontal line offset. This should be a
593 * on 32 byte boundary. So clear LSB 5 bits
595 vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);
597 /* configure the memory line offset */
598 if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
599 /* two fields are interleaved in memory */
600 vpfe_reg_write(ccdc, VPFE_SDOFST_FIELD_INTERLEAVED,
605 vpfe_ccdc_config_black_clamp(struct vpfe_ccdc *ccdc,
606 struct vpfe_ccdc_black_clamp *bclamp)
610 if (!bclamp->enable) {
611 /* configure DCSub */
612 val = (bclamp->dc_sub) & VPFE_BLK_DC_SUB_MASK;
613 vpfe_reg_write(ccdc, val, VPFE_DCSUB);
614 vpfe_reg_write(ccdc, VPFE_CLAMP_DEFAULT_VAL, VPFE_CLAMP);
618 * Configure gain, Start pixel, No of line to be avg,
619 * No of pixel/line to be avg, & Enable the Black clamping
621 val = ((bclamp->sgain & VPFE_BLK_SGAIN_MASK) |
622 ((bclamp->start_pixel & VPFE_BLK_ST_PXL_MASK) <<
623 VPFE_BLK_ST_PXL_SHIFT) |
624 ((bclamp->sample_ln & VPFE_BLK_SAMPLE_LINE_MASK) <<
625 VPFE_BLK_SAMPLE_LINE_SHIFT) |
626 ((bclamp->sample_pixel & VPFE_BLK_SAMPLE_LN_MASK) <<
627 VPFE_BLK_SAMPLE_LN_SHIFT) | VPFE_BLK_CLAMP_ENABLE);
628 vpfe_reg_write(ccdc, val, VPFE_CLAMP);
629 /* If Black clamping is enable then make dcsub 0 */
630 vpfe_reg_write(ccdc, VPFE_DCSUB_DEFAULT_VAL, VPFE_DCSUB);
634 vpfe_ccdc_config_black_compense(struct vpfe_ccdc *ccdc,
635 struct vpfe_ccdc_black_compensation *bcomp)
639 val = ((bcomp->b & VPFE_BLK_COMP_MASK) |
640 ((bcomp->gb & VPFE_BLK_COMP_MASK) <<
641 VPFE_BLK_COMP_GB_COMP_SHIFT) |
642 ((bcomp->gr & VPFE_BLK_COMP_MASK) <<
643 VPFE_BLK_COMP_GR_COMP_SHIFT) |
644 ((bcomp->r & VPFE_BLK_COMP_MASK) <<
645 VPFE_BLK_COMP_R_COMP_SHIFT));
646 vpfe_reg_write(ccdc, val, VPFE_BLKCMP);
650 * vpfe_ccdc_config_raw()
651 * This function will configure CCDC for Raw capture mode
653 static void vpfe_ccdc_config_raw(struct vpfe_ccdc *ccdc)
655 struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
656 struct vpfe_ccdc_config_params_raw *config_params =
657 &ccdc->ccdc_cfg.bayer.config_params;
658 struct ccdc_params_raw *params = &ccdc->ccdc_cfg.bayer;
659 unsigned int syn_mode;
662 vpfe_dbg(3, vpfe, "vpfe_ccdc_config_raw:\n");
665 vpfe_ccdc_restore_defaults(ccdc);
667 /* Disable latching function registers on VSYNC */
668 vpfe_reg_write(ccdc, VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);
671 * Configure the vertical sync polarity(SYN_MODE.VDPOL),
672 * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity
673 * (SYN_MODE.FLDPOL), frame format(progressive or interlace),
674 * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output
675 * SDRAM, enable internal timing generator
677 syn_mode = (((params->vd_pol & VPFE_VD_POL_MASK) << VPFE_VD_POL_SHIFT) |
678 ((params->hd_pol & VPFE_HD_POL_MASK) << VPFE_HD_POL_SHIFT) |
679 ((params->fid_pol & VPFE_FID_POL_MASK) <<
680 VPFE_FID_POL_SHIFT) | ((params->frm_fmt &
681 VPFE_FRM_FMT_MASK) << VPFE_FRM_FMT_SHIFT) |
682 ((config_params->data_sz & VPFE_DATA_SZ_MASK) <<
683 VPFE_DATA_SZ_SHIFT) | ((params->pix_fmt &
684 VPFE_PIX_FMT_MASK) << VPFE_PIX_FMT_SHIFT) |
685 VPFE_WEN_ENABLE | VPFE_VDHDEN_ENABLE);
687 /* Enable and configure aLaw register if needed */
688 if (config_params->alaw.enable) {
689 val = ((config_params->alaw.gamma_wd &
690 VPFE_ALAW_GAMMA_WD_MASK) | VPFE_ALAW_ENABLE);
691 vpfe_reg_write(ccdc, val, VPFE_ALAW);
692 vpfe_dbg(3, vpfe, "\nWriting 0x%x to ALAW...\n", val);
695 /* Configure video window */
696 vpfe_ccdc_setwin(ccdc, ¶ms->win, params->frm_fmt,
697 params->bytesperpixel);
699 /* Configure Black Clamp */
700 vpfe_ccdc_config_black_clamp(ccdc, &config_params->blk_clamp);
702 /* Configure Black level compensation */
703 vpfe_ccdc_config_black_compense(ccdc, &config_params->blk_comp);
705 /* If data size is 8 bit then pack the data */
706 if ((config_params->data_sz == VPFE_CCDC_DATA_8BITS) ||
707 config_params->alaw.enable)
708 syn_mode |= VPFE_DATA_PACK_ENABLE;
711 * Configure Horizontal offset register. If pack 8 is enabled then
712 * 1 pixel will take 1 byte
714 vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);
716 vpfe_dbg(3, vpfe, "Writing %d (%x) to HSIZE_OFF\n",
717 params->bytesperline, params->bytesperline);
719 /* Set value for SDOFST */
720 if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
721 if (params->image_invert_enable) {
722 /* For interlace inverse mode */
723 vpfe_reg_write(ccdc, VPFE_INTERLACED_IMAGE_INVERT,
726 /* For interlace non inverse mode */
727 vpfe_reg_write(ccdc, VPFE_INTERLACED_NO_IMAGE_INVERT,
730 } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
731 vpfe_reg_write(ccdc, VPFE_PROGRESSIVE_NO_IMAGE_INVERT,
735 vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);
741 vpfe_ccdc_set_buftype(struct vpfe_ccdc *ccdc,
742 enum ccdc_buftype buf_type)
744 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
745 ccdc->ccdc_cfg.bayer.buf_type = buf_type;
747 ccdc->ccdc_cfg.ycbcr.buf_type = buf_type;
752 static inline enum ccdc_buftype vpfe_ccdc_get_buftype(struct vpfe_ccdc *ccdc)
754 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
755 return ccdc->ccdc_cfg.bayer.buf_type;
757 return ccdc->ccdc_cfg.ycbcr.buf_type;
760 static int vpfe_ccdc_set_pixel_format(struct vpfe_ccdc *ccdc, u32 pixfmt)
762 struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
764 vpfe_dbg(1, vpfe, "vpfe_ccdc_set_pixel_format: if_type: %d, pixfmt:%s\n",
765 ccdc->ccdc_cfg.if_type, print_fourcc(pixfmt));
767 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
768 ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
770 * Need to clear it in case it was left on
771 * after the last capture.
773 ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 0;
776 case V4L2_PIX_FMT_SBGGR8:
777 ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 1;
780 case V4L2_PIX_FMT_YUYV:
781 case V4L2_PIX_FMT_UYVY:
782 case V4L2_PIX_FMT_YUV420:
783 case V4L2_PIX_FMT_NV12:
784 case V4L2_PIX_FMT_RGB565X:
787 case V4L2_PIX_FMT_SBGGR16:
793 case V4L2_PIX_FMT_YUYV:
794 ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
797 case V4L2_PIX_FMT_UYVY:
798 ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
809 static u32 vpfe_ccdc_get_pixel_format(struct vpfe_ccdc *ccdc)
813 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
814 pixfmt = V4L2_PIX_FMT_YUYV;
816 if (ccdc->ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
817 pixfmt = V4L2_PIX_FMT_YUYV;
819 pixfmt = V4L2_PIX_FMT_UYVY;
826 vpfe_ccdc_set_image_window(struct vpfe_ccdc *ccdc,
827 struct v4l2_rect *win, unsigned int bpp)
829 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
830 ccdc->ccdc_cfg.bayer.win = *win;
831 ccdc->ccdc_cfg.bayer.bytesperpixel = bpp;
832 ccdc->ccdc_cfg.bayer.bytesperline = ALIGN(win->width * bpp, 32);
834 ccdc->ccdc_cfg.ycbcr.win = *win;
835 ccdc->ccdc_cfg.ycbcr.bytesperpixel = bpp;
836 ccdc->ccdc_cfg.ycbcr.bytesperline = ALIGN(win->width * bpp, 32);
843 vpfe_ccdc_get_image_window(struct vpfe_ccdc *ccdc,
844 struct v4l2_rect *win)
846 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
847 *win = ccdc->ccdc_cfg.bayer.win;
849 *win = ccdc->ccdc_cfg.ycbcr.win;
852 static inline unsigned int vpfe_ccdc_get_line_length(struct vpfe_ccdc *ccdc)
854 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
855 return ccdc->ccdc_cfg.bayer.bytesperline;
857 return ccdc->ccdc_cfg.ycbcr.bytesperline;
861 vpfe_ccdc_set_frame_format(struct vpfe_ccdc *ccdc,
862 enum ccdc_frmfmt frm_fmt)
864 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
865 ccdc->ccdc_cfg.bayer.frm_fmt = frm_fmt;
867 ccdc->ccdc_cfg.ycbcr.frm_fmt = frm_fmt;
872 static inline enum ccdc_frmfmt
873 vpfe_ccdc_get_frame_format(struct vpfe_ccdc *ccdc)
875 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
876 return ccdc->ccdc_cfg.bayer.frm_fmt;
878 return ccdc->ccdc_cfg.ycbcr.frm_fmt;
881 static inline int vpfe_ccdc_getfid(struct vpfe_ccdc *ccdc)
883 return (vpfe_reg_read(ccdc, VPFE_SYNMODE) >> 15) & 1;
886 static inline void vpfe_set_sdr_addr(struct vpfe_ccdc *ccdc, unsigned long addr)
888 vpfe_reg_write(ccdc, addr & 0xffffffe0, VPFE_SDR_ADDR);
891 static int vpfe_ccdc_set_hw_if_params(struct vpfe_ccdc *ccdc,
892 struct vpfe_hw_if_param *params)
894 struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
896 ccdc->ccdc_cfg.if_type = params->if_type;
898 switch (params->if_type) {
900 case VPFE_YCBCR_SYNC_16:
901 case VPFE_YCBCR_SYNC_8:
902 case VPFE_BT656_10BIT:
903 ccdc->ccdc_cfg.ycbcr.vd_pol = params->vdpol;
904 ccdc->ccdc_cfg.ycbcr.hd_pol = params->hdpol;
908 ccdc->ccdc_cfg.bayer.vd_pol = params->vdpol;
909 ccdc->ccdc_cfg.bayer.hd_pol = params->hdpol;
910 if (params->bus_width == 10)
911 ccdc->ccdc_cfg.bayer.config_params.data_sz =
912 VPFE_CCDC_DATA_10BITS;
914 ccdc->ccdc_cfg.bayer.config_params.data_sz =
915 VPFE_CCDC_DATA_8BITS;
916 vpfe_dbg(1, vpfe, "params.bus_width: %d\n",
918 vpfe_dbg(1, vpfe, "config_params.data_sz: %d\n",
919 ccdc->ccdc_cfg.bayer.config_params.data_sz);
929 static void vpfe_clear_intr(struct vpfe_ccdc *ccdc, int vdint)
931 unsigned int vpfe_int_status;
933 vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS);
938 vpfe_int_status &= ~VPFE_VDINT0;
939 vpfe_int_status |= VPFE_VDINT0;
944 vpfe_int_status &= ~VPFE_VDINT1;
945 vpfe_int_status |= VPFE_VDINT1;
950 vpfe_int_status &= ~VPFE_VDINT2;
951 vpfe_int_status |= VPFE_VDINT2;
954 /* Clear all interrupts */
956 vpfe_int_status &= ~(VPFE_VDINT0 |
959 vpfe_int_status |= (VPFE_VDINT0 |
964 /* Clear specific VDINT from the status register */
965 vpfe_reg_write(ccdc, vpfe_int_status, VPFE_IRQ_STS);
967 vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS);
969 /* Acknowledge that we are done with all interrupts */
970 vpfe_reg_write(ccdc, 1, VPFE_IRQ_EOI);
973 static void vpfe_ccdc_config_defaults(struct vpfe_ccdc *ccdc)
975 ccdc->ccdc_cfg.if_type = VPFE_RAW_BAYER;
977 ccdc->ccdc_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT;
978 ccdc->ccdc_cfg.ycbcr.frm_fmt = CCDC_FRMFMT_INTERLACED;
979 ccdc->ccdc_cfg.ycbcr.fid_pol = VPFE_PINPOL_POSITIVE;
980 ccdc->ccdc_cfg.ycbcr.vd_pol = VPFE_PINPOL_POSITIVE;
981 ccdc->ccdc_cfg.ycbcr.hd_pol = VPFE_PINPOL_POSITIVE;
982 ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
983 ccdc->ccdc_cfg.ycbcr.buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED;
985 ccdc->ccdc_cfg.ycbcr.win.left = 0;
986 ccdc->ccdc_cfg.ycbcr.win.top = 0;
987 ccdc->ccdc_cfg.ycbcr.win.width = 720;
988 ccdc->ccdc_cfg.ycbcr.win.height = 576;
989 ccdc->ccdc_cfg.ycbcr.bt656_enable = 1;
991 ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
992 ccdc->ccdc_cfg.bayer.frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
993 ccdc->ccdc_cfg.bayer.fid_pol = VPFE_PINPOL_POSITIVE;
994 ccdc->ccdc_cfg.bayer.vd_pol = VPFE_PINPOL_POSITIVE;
995 ccdc->ccdc_cfg.bayer.hd_pol = VPFE_PINPOL_POSITIVE;
997 ccdc->ccdc_cfg.bayer.win.left = 0;
998 ccdc->ccdc_cfg.bayer.win.top = 0;
999 ccdc->ccdc_cfg.bayer.win.width = 800;
1000 ccdc->ccdc_cfg.bayer.win.height = 600;
1001 ccdc->ccdc_cfg.bayer.config_params.data_sz = VPFE_CCDC_DATA_8BITS;
1002 ccdc->ccdc_cfg.bayer.config_params.alaw.gamma_wd =
1003 VPFE_CCDC_GAMMA_BITS_09_0;
1007 * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings
1009 static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe,
1010 struct v4l2_format *f)
1012 struct v4l2_rect image_win;
1013 enum ccdc_buftype buf_type;
1014 enum ccdc_frmfmt frm_fmt;
1016 memset(f, 0, sizeof(*f));
1017 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1018 vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win);
1019 f->fmt.pix.width = image_win.width;
1020 f->fmt.pix.height = image_win.height;
1021 f->fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc);
1022 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
1024 buf_type = vpfe_ccdc_get_buftype(&vpfe->ccdc);
1025 f->fmt.pix.pixelformat = vpfe_ccdc_get_pixel_format(&vpfe->ccdc);
1026 frm_fmt = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
1028 if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
1029 f->fmt.pix.field = V4L2_FIELD_NONE;
1030 } else if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
1031 if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) {
1032 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1033 } else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED) {
1034 f->fmt.pix.field = V4L2_FIELD_SEQ_TB;
1036 vpfe_err(vpfe, "Invalid buf_type\n");
1040 vpfe_err(vpfe, "Invalid frm_fmt\n");
1046 static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe)
1048 enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED;
1051 vpfe_dbg(2, vpfe, "vpfe_config_ccdc_image_format\n");
1053 vpfe_dbg(1, vpfe, "pixelformat: %s\n",
1054 print_fourcc(vpfe->fmt.fmt.pix.pixelformat));
1056 if (vpfe_ccdc_set_pixel_format(&vpfe->ccdc,
1057 vpfe->fmt.fmt.pix.pixelformat) < 0) {
1058 vpfe_err(vpfe, "couldn't set pix format in ccdc\n");
1062 /* configure the image window */
1063 vpfe_ccdc_set_image_window(&vpfe->ccdc, &vpfe->crop, vpfe->bpp);
1065 switch (vpfe->fmt.fmt.pix.field) {
1066 case V4L2_FIELD_INTERLACED:
1067 /* do nothing, since it is default */
1068 ret = vpfe_ccdc_set_buftype(
1070 CCDC_BUFTYPE_FLD_INTERLEAVED);
1073 case V4L2_FIELD_NONE:
1074 frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
1075 /* buffer type only applicable for interlaced scan */
1078 case V4L2_FIELD_SEQ_TB:
1079 ret = vpfe_ccdc_set_buftype(
1081 CCDC_BUFTYPE_FLD_SEPARATED);
1091 return vpfe_ccdc_set_frame_format(&vpfe->ccdc, frm_fmt);
1095 * vpfe_config_image_format()
1096 * For a given standard, this functions sets up the default
1097 * pix format & crop values in the vpfe device and ccdc. It first
1098 * starts with defaults based values from the standard table.
1099 * It then checks if sub device supports get_fmt and then override the
1100 * values based on that.Sets crop values to match with scan resolution
1101 * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the
1104 static int vpfe_config_image_format(struct vpfe_device *vpfe,
1107 struct v4l2_pix_format *pix = &vpfe->fmt.fmt.pix;
1110 for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
1111 if (vpfe_standards[i].std_id & std_id) {
1112 vpfe->std_info.active_pixels =
1113 vpfe_standards[i].width;
1114 vpfe->std_info.active_lines =
1115 vpfe_standards[i].height;
1116 vpfe->std_info.frame_format =
1117 vpfe_standards[i].frame_format;
1118 vpfe->std_index = i;
1124 if (i == ARRAY_SIZE(vpfe_standards)) {
1125 vpfe_err(vpfe, "standard not supported\n");
1129 vpfe->crop.top = vpfe->crop.left = 0;
1130 vpfe->crop.width = vpfe->std_info.active_pixels;
1131 vpfe->crop.height = vpfe->std_info.active_lines;
1132 pix->width = vpfe->crop.width;
1133 pix->height = vpfe->crop.height;
1134 pix->pixelformat = V4L2_PIX_FMT_YUYV;
1136 /* first field and frame format based on standard frame format */
1137 if (vpfe->std_info.frame_format)
1138 pix->field = V4L2_FIELD_INTERLACED;
1140 pix->field = V4L2_FIELD_NONE;
1142 ret = __vpfe_get_format(vpfe, &vpfe->fmt, &vpfe->bpp);
1146 /* Update the crop window based on found values */
1147 vpfe->crop.width = pix->width;
1148 vpfe->crop.height = pix->height;
1150 return vpfe_config_ccdc_image_format(vpfe);
1153 static int vpfe_initialize_device(struct vpfe_device *vpfe)
1155 struct vpfe_subdev_info *sdinfo;
1158 sdinfo = &vpfe->cfg->sub_devs[0];
1159 sdinfo->sd = vpfe->sd[0];
1160 vpfe->current_input = 0;
1161 vpfe->std_index = 0;
1162 /* Configure the default format information */
1163 ret = vpfe_config_image_format(vpfe,
1164 vpfe_standards[vpfe->std_index].std_id);
1168 pm_runtime_get_sync(vpfe->pdev);
1170 vpfe_config_enable(&vpfe->ccdc, 1);
1172 vpfe_ccdc_restore_defaults(&vpfe->ccdc);
1174 /* Clear all VPFE interrupts */
1175 vpfe_clear_intr(&vpfe->ccdc, -1);
1181 * vpfe_release : This function is based on the vb2_fop_release
1183 * It has been augmented to handle module power management,
1184 * by disabling/enabling h/w module fcntl clock when necessary.
1186 static int vpfe_release(struct file *file)
1188 struct vpfe_device *vpfe = video_drvdata(file);
1192 mutex_lock(&vpfe->lock);
1194 /* Save the singular status before we call the clean-up helper */
1195 fh_singular = v4l2_fh_is_singular_file(file);
1197 /* the release helper will cleanup any on-going streaming */
1198 ret = _vb2_fop_release(file, NULL);
1201 * If this was the last open file.
1202 * Then de-initialize hw module.
1205 vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev);
1207 mutex_unlock(&vpfe->lock);
1213 * vpfe_open : This function is based on the v4l2_fh_open helper function.
1214 * It has been augmented to handle module power management,
1215 * by disabling/enabling h/w module fcntl clock when necessary.
1217 static int vpfe_open(struct file *file)
1219 struct vpfe_device *vpfe = video_drvdata(file);
1222 mutex_lock(&vpfe->lock);
1224 ret = v4l2_fh_open(file);
1226 vpfe_err(vpfe, "v4l2_fh_open failed\n");
1230 if (!v4l2_fh_is_singular_file(file))
1233 if (vpfe_initialize_device(vpfe)) {
1234 v4l2_fh_release(file);
1239 mutex_unlock(&vpfe->lock);
1244 * vpfe_schedule_next_buffer: set next buffer address for capture
1245 * @vpfe : ptr to vpfe device
1247 * This function will get next buffer from the dma queue and
1248 * set the buffer address in the vpfe register for capture.
1249 * the buffer is marked active
1251 * Assumes caller is holding vpfe->dma_queue_lock already
1253 static inline void vpfe_schedule_next_buffer(struct vpfe_device *vpfe)
1255 vpfe->next_frm = list_entry(vpfe->dma_queue.next,
1256 struct vpfe_cap_buffer, list);
1257 list_del(&vpfe->next_frm->list);
1259 vpfe_set_sdr_addr(&vpfe->ccdc,
1260 vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb, 0));
1263 static inline void vpfe_schedule_bottom_field(struct vpfe_device *vpfe)
1267 addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb, 0) +
1270 vpfe_set_sdr_addr(&vpfe->ccdc, addr);
1274 * vpfe_process_buffer_complete: process a completed buffer
1275 * @vpfe : ptr to vpfe device
1277 * This function time stamp the buffer and mark it as DONE. It also
1278 * wake up any process waiting on the QUEUE and set the next buffer
1281 static inline void vpfe_process_buffer_complete(struct vpfe_device *vpfe)
1283 v4l2_get_timestamp(&vpfe->cur_frm->vb.v4l2_buf.timestamp);
1284 vpfe->cur_frm->vb.v4l2_buf.field = vpfe->fmt.fmt.pix.field;
1285 vpfe->cur_frm->vb.v4l2_buf.sequence = vpfe->sequence++;
1286 vb2_buffer_done(&vpfe->cur_frm->vb, VB2_BUF_STATE_DONE);
1287 vpfe->cur_frm = vpfe->next_frm;
1291 * vpfe_isr : ISR handler for vpfe capture (VINT0)
1293 * @dev_id: dev_id ptr
1295 * It changes status of the captured buffer, takes next buffer from the queue
1296 * and sets its address in VPFE registers
1298 static irqreturn_t vpfe_isr(int irq, void *dev)
1300 struct vpfe_device *vpfe = (struct vpfe_device *)dev;
1301 enum v4l2_field field;
1305 intr_status = vpfe_reg_read(&vpfe->ccdc, VPFE_IRQ_STS);
1307 if (intr_status & VPFE_VDINT0) {
1308 field = vpfe->fmt.fmt.pix.field;
1310 if (field == V4L2_FIELD_NONE) {
1311 /* handle progressive frame capture */
1312 if (vpfe->cur_frm != vpfe->next_frm)
1313 vpfe_process_buffer_complete(vpfe);
1317 /* interlaced or TB capture check which field
1318 we are in hardware */
1319 fid = vpfe_ccdc_getfid(&vpfe->ccdc);
1321 /* switch the software maintained field id */
1323 if (fid == vpfe->field) {
1324 /* we are in-sync here,continue */
1327 * One frame is just being captured. If the
1328 * next frame is available, release the
1329 * current frame and move on
1331 if (vpfe->cur_frm != vpfe->next_frm)
1332 vpfe_process_buffer_complete(vpfe);
1334 * based on whether the two fields are stored
1335 * interleave or separately in memory,
1336 * reconfigure the CCDC memory address
1338 if (field == V4L2_FIELD_SEQ_TB)
1339 vpfe_schedule_bottom_field(vpfe);
1344 * if one field is just being captured configure
1345 * the next frame get the next frame from the empty
1346 * queue if no frame is available hold on to the
1349 spin_lock(&vpfe->dma_queue_lock);
1350 if (!list_empty(&vpfe->dma_queue) &&
1351 vpfe->cur_frm == vpfe->next_frm)
1352 vpfe_schedule_next_buffer(vpfe);
1353 spin_unlock(&vpfe->dma_queue_lock);
1354 } else if (fid == 0) {
1356 * out of sync. Recover from any hardware out-of-sync.
1357 * May loose one frame
1364 if (intr_status & VPFE_VDINT1) {
1365 spin_lock(&vpfe->dma_queue_lock);
1366 if (vpfe->fmt.fmt.pix.field == V4L2_FIELD_NONE &&
1367 !list_empty(&vpfe->dma_queue) &&
1368 vpfe->cur_frm == vpfe->next_frm)
1369 vpfe_schedule_next_buffer(vpfe);
1370 spin_unlock(&vpfe->dma_queue_lock);
1373 vpfe_clear_intr(&vpfe->ccdc, intr_status);
1378 static inline void vpfe_detach_irq(struct vpfe_device *vpfe)
1380 unsigned int intr = VPFE_VDINT0;
1381 enum ccdc_frmfmt frame_format;
1383 frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
1384 if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
1385 intr |= VPFE_VDINT1;
1387 vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_CLR);
1390 static inline void vpfe_attach_irq(struct vpfe_device *vpfe)
1392 unsigned int intr = VPFE_VDINT0;
1393 enum ccdc_frmfmt frame_format;
1395 frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
1396 if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
1397 intr |= VPFE_VDINT1;
1399 vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_SET);
1402 static int vpfe_querycap(struct file *file, void *priv,
1403 struct v4l2_capability *cap)
1405 struct vpfe_device *vpfe = video_drvdata(file);
1407 vpfe_dbg(2, vpfe, "vpfe_querycap\n");
1409 strlcpy(cap->driver, VPFE_MODULE_NAME, sizeof(cap->driver));
1410 strlcpy(cap->card, "TI AM437x VPFE", sizeof(cap->card));
1411 snprintf(cap->bus_info, sizeof(cap->bus_info),
1412 "platform:%s", vpfe->v4l2_dev.name);
1413 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
1415 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1420 /* get the format set at output pad of the adjacent subdev */
1421 static int __vpfe_get_format(struct vpfe_device *vpfe,
1422 struct v4l2_format *format, unsigned int *bpp)
1424 struct v4l2_mbus_framefmt mbus_fmt;
1425 struct vpfe_subdev_info *sdinfo;
1426 struct v4l2_subdev_format fmt;
1429 sdinfo = vpfe->current_subdev;
1433 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1436 ret = v4l2_subdev_call(sdinfo->sd, pad, get_fmt, NULL, &fmt);
1437 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
1441 v4l2_fill_pix_format(&format->fmt.pix, &fmt.format);
1442 mbus_to_pix(vpfe, &fmt.format, &format->fmt.pix, bpp);
1444 ret = v4l2_device_call_until_err(&vpfe->v4l2_dev,
1448 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
1450 v4l2_fill_pix_format(&format->fmt.pix, &mbus_fmt);
1451 mbus_to_pix(vpfe, &mbus_fmt, &format->fmt.pix, bpp);
1454 format->type = vpfe->fmt.type;
1457 "%s size %dx%d (%s) bytesperline = %d, size = %d, bpp = %d\n",
1458 __func__, format->fmt.pix.width, format->fmt.pix.height,
1459 print_fourcc(format->fmt.pix.pixelformat),
1460 format->fmt.pix.bytesperline, format->fmt.pix.sizeimage, *bpp);
1465 /* set the format at output pad of the adjacent subdev */
1466 static int __vpfe_set_format(struct vpfe_device *vpfe,
1467 struct v4l2_format *format, unsigned int *bpp)
1469 struct vpfe_subdev_info *sdinfo;
1470 struct v4l2_subdev_format fmt;
1473 vpfe_dbg(2, vpfe, "__vpfe_set_format\n");
1475 sdinfo = vpfe->current_subdev;
1479 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1482 pix_to_mbus(vpfe, &format->fmt.pix, &fmt.format);
1484 ret = v4l2_subdev_call(sdinfo->sd, pad, set_fmt, NULL, &fmt);
1488 v4l2_fill_pix_format(&format->fmt.pix, &fmt.format);
1489 mbus_to_pix(vpfe, &fmt.format, &format->fmt.pix, bpp);
1491 format->type = vpfe->fmt.type;
1494 "%s size %dx%d (%s) bytesperline = %d, size = %d, bpp = %d\n",
1495 __func__, format->fmt.pix.width, format->fmt.pix.height,
1496 print_fourcc(format->fmt.pix.pixelformat),
1497 format->fmt.pix.bytesperline, format->fmt.pix.sizeimage, *bpp);
1502 static int vpfe_g_fmt(struct file *file, void *priv,
1503 struct v4l2_format *fmt)
1505 struct vpfe_device *vpfe = video_drvdata(file);
1507 vpfe_dbg(2, vpfe, "vpfe_g_fmt\n");
1514 static int vpfe_enum_fmt(struct file *file, void *priv,
1515 struct v4l2_fmtdesc *f)
1517 struct vpfe_device *vpfe = video_drvdata(file);
1518 struct vpfe_subdev_info *sdinfo;
1519 struct vpfe_fmt *fmt = NULL;
1522 vpfe_dbg(2, vpfe, "vpfe_enum_format index:%d\n",
1525 sdinfo = vpfe->current_subdev;
1529 if (f->index > ARRAY_SIZE(formats))
1532 for (k = 0; k < ARRAY_SIZE(formats); k++) {
1533 if (formats[k].index == f->index) {
1541 strncpy(f->description, fmt->name, sizeof(f->description) - 1);
1542 f->pixelformat = fmt->fourcc;
1543 f->type = vpfe->fmt.type;
1545 vpfe_dbg(1, vpfe, "vpfe_enum_format: mbus index: %d code: %x pixelformat: %s [%s]\n",
1546 f->index, fmt->code, print_fourcc(fmt->fourcc), fmt->name);
1551 static int vpfe_try_fmt(struct file *file, void *priv,
1552 struct v4l2_format *fmt)
1554 struct vpfe_device *vpfe = video_drvdata(file);
1557 vpfe_dbg(2, vpfe, "vpfe_try_fmt\n");
1559 return __vpfe_get_format(vpfe, fmt, &bpp);
1562 static int vpfe_s_fmt(struct file *file, void *priv,
1563 struct v4l2_format *fmt)
1565 struct vpfe_device *vpfe = video_drvdata(file);
1566 struct v4l2_format format;
1570 vpfe_dbg(2, vpfe, "vpfe_s_fmt\n");
1572 /* If streaming is started, return error */
1573 if (vb2_is_busy(&vpfe->buffer_queue)) {
1574 vpfe_err(vpfe, "%s device busy\n", __func__);
1578 ret = vpfe_try_fmt(file, priv, &format);
1583 if (!cmp_v4l2_format(fmt, &format)) {
1584 /* Sensor format is different from the requested format
1585 * so we need to change it
1587 ret = __vpfe_set_format(vpfe, fmt, &bpp);
1590 } else /* Just make sure all of the fields are consistent */
1593 /* First detach any IRQ if currently attached */
1594 vpfe_detach_irq(vpfe);
1598 /* Update the crop window based on found values */
1599 vpfe->crop.width = fmt->fmt.pix.width;
1600 vpfe->crop.height = fmt->fmt.pix.height;
1602 /* set image capture parameters in the ccdc */
1603 return vpfe_config_ccdc_image_format(vpfe);
1606 static int vpfe_enum_size(struct file *file, void *priv,
1607 struct v4l2_frmsizeenum *fsize)
1609 struct vpfe_device *vpfe = video_drvdata(file);
1610 struct v4l2_subdev_frame_size_enum fse;
1611 struct vpfe_subdev_info *sdinfo;
1612 struct v4l2_mbus_framefmt mbus;
1613 struct v4l2_pix_format pix;
1614 struct vpfe_fmt *fmt;
1617 vpfe_dbg(2, vpfe, "vpfe_enum_size\n");
1619 /* check for valid format */
1620 fmt = find_format_by_pix(fsize->pixel_format);
1622 vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n",
1623 fsize->pixel_format);
1627 memset(fsize->reserved, 0x0, sizeof(fsize->reserved));
1629 sdinfo = vpfe->current_subdev;
1633 memset(&pix, 0x0, sizeof(pix));
1634 /* Construct pix from parameter and use default for the rest */
1635 pix.pixelformat = fsize->pixel_format;
1638 pix.colorspace = V4L2_COLORSPACE_SRGB;
1639 pix.field = V4L2_FIELD_NONE;
1640 pix_to_mbus(vpfe, &pix, &mbus);
1642 memset(&fse, 0x0, sizeof(fse));
1643 fse.index = fsize->index;
1645 fse.code = mbus.code;
1646 fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1647 ret = v4l2_subdev_call(sdinfo->sd, pad, enum_frame_size, NULL, &fse);
1651 vpfe_dbg(1, vpfe, "vpfe_enum_size: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
1652 fse.index, fse.code, fse.min_width, fse.max_width,
1653 fse.min_height, fse.max_height);
1655 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1656 fsize->discrete.width = fse.max_width;
1657 fsize->discrete.height = fse.max_height;
1659 vpfe_dbg(1, vpfe, "vpfe_enum_size: index: %d pixformat: %s size: %dx%d\n",
1660 fsize->index, print_fourcc(fsize->pixel_format),
1661 fsize->discrete.width, fsize->discrete.height);
1667 * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
1668 * given app input index
1671 vpfe_get_subdev_input_index(struct vpfe_device *vpfe,
1673 int *subdev_input_index,
1674 int app_input_index)
1678 for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
1679 if (app_input_index < (j + 1)) {
1681 *subdev_input_index = app_input_index - j;
1690 * vpfe_get_app_input - Get app input index for a given subdev input index
1691 * driver stores the input index of the current sub device and translate it
1692 * when application request the current input
1694 static int vpfe_get_app_input_index(struct vpfe_device *vpfe,
1695 int *app_input_index)
1697 struct vpfe_config *cfg = vpfe->cfg;
1698 struct vpfe_subdev_info *sdinfo;
1699 struct i2c_client *client;
1700 struct i2c_client *curr_client;
1703 curr_client = v4l2_get_subdevdata(vpfe->current_subdev->sd);
1704 for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
1705 sdinfo = &cfg->sub_devs[i];
1706 client = v4l2_get_subdevdata(sdinfo->sd);
1707 if (client->addr == curr_client->addr &&
1708 client->adapter->nr == client->adapter->nr) {
1709 if (vpfe->current_input >= 1)
1711 *app_input_index = j + vpfe->current_input;
1719 static int vpfe_enum_input(struct file *file, void *priv,
1720 struct v4l2_input *inp)
1722 struct vpfe_device *vpfe = video_drvdata(file);
1723 struct vpfe_subdev_info *sdinfo;
1726 vpfe_dbg(2, vpfe, "vpfe_enum_input\n");
1728 if (vpfe_get_subdev_input_index(vpfe, &subdev, &index,
1731 "input information not found for the subdev\n");
1734 sdinfo = &vpfe->cfg->sub_devs[subdev];
1735 *inp = sdinfo->inputs[index];
1740 static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
1742 struct vpfe_device *vpfe = video_drvdata(file);
1744 vpfe_dbg(2, vpfe, "vpfe_g_input\n");
1746 return vpfe_get_app_input_index(vpfe, index);
1749 /* Assumes caller is holding vpfe_dev->lock */
1750 static int vpfe_set_input(struct vpfe_device *vpfe, unsigned int index)
1752 int subdev_index = 0, inp_index = 0;
1753 struct vpfe_subdev_info *sdinfo;
1754 struct vpfe_route *route;
1758 vpfe_dbg(2, vpfe, "vpfe_set_input: index: %d\n", index);
1760 /* If streaming is started, return error */
1761 if (vb2_is_busy(&vpfe->buffer_queue)) {
1762 vpfe_err(vpfe, "%s device busy\n", __func__);
1765 ret = vpfe_get_subdev_input_index(vpfe,
1770 vpfe_err(vpfe, "invalid input index: %d\n", index);
1774 sdinfo = &vpfe->cfg->sub_devs[subdev_index];
1775 sdinfo->sd = vpfe->sd[subdev_index];
1776 route = &sdinfo->routes[inp_index];
1777 if (route && sdinfo->can_route) {
1778 input = route->input;
1779 output = route->output;
1781 ret = v4l2_subdev_call(sdinfo->sd, video,
1782 s_routing, input, output, 0);
1784 vpfe_err(vpfe, "s_routing failed\n");
1792 vpfe->current_subdev = sdinfo;
1794 vpfe->v4l2_dev.ctrl_handler = sdinfo->sd->ctrl_handler;
1795 vpfe->current_input = index;
1796 vpfe->std_index = 0;
1798 /* set the bus/interface parameter for the sub device in ccdc */
1799 ret = vpfe_ccdc_set_hw_if_params(&vpfe->ccdc, &sdinfo->vpfe_param);
1803 /* set the default image parameters in the device */
1804 return vpfe_config_image_format(vpfe,
1805 vpfe_standards[vpfe->std_index].std_id);
1811 static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
1813 struct vpfe_device *vpfe = video_drvdata(file);
1816 "vpfe_s_input: index: %d\n", index);
1818 return vpfe_set_input(vpfe, index);
1821 static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
1823 struct vpfe_device *vpfe = video_drvdata(file);
1824 struct vpfe_subdev_info *sdinfo;
1826 vpfe_dbg(2, vpfe, "vpfe_querystd\n");
1828 sdinfo = vpfe->current_subdev;
1829 if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))
1832 /* Call querystd function of decoder device */
1833 return v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
1834 video, querystd, std_id);
1837 static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)
1839 struct vpfe_device *vpfe = video_drvdata(file);
1840 struct vpfe_subdev_info *sdinfo;
1843 vpfe_dbg(2, vpfe, "vpfe_s_std\n");
1845 sdinfo = vpfe->current_subdev;
1846 if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))
1849 /* If streaming is started, return error */
1850 if (vb2_is_busy(&vpfe->buffer_queue)) {
1851 vpfe_err(vpfe, "%s device busy\n", __func__);
1856 ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
1857 video, s_std, std_id);
1859 vpfe_err(vpfe, "Failed to set standard\n");
1862 ret = vpfe_config_image_format(vpfe, std_id);
1867 static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
1869 struct vpfe_device *vpfe = video_drvdata(file);
1870 struct vpfe_subdev_info *sdinfo;
1872 vpfe_dbg(2, vpfe, "vpfe_g_std\n");
1874 sdinfo = vpfe->current_subdev;
1875 if (sdinfo->inputs[0].capabilities != V4L2_IN_CAP_STD)
1878 *std_id = vpfe_standards[vpfe->std_index].std_id;
1884 * vpfe_calculate_offsets : This function calculates buffers offset
1885 * for top and bottom field
1887 static void vpfe_calculate_offsets(struct vpfe_device *vpfe)
1889 struct v4l2_rect image_win;
1891 vpfe_dbg(2, vpfe, "vpfe_calculate_offsets\n");
1893 vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win);
1894 vpfe->field_off = image_win.height * image_win.width;
1898 * vpfe_queue_setup - Callback function for buffer setup.
1899 * @vq: vb2_queue ptr
1901 * @nbuffers: ptr to number of buffers requested by application
1902 * @nplanes:: contains number of distinct video planes needed to hold a frame
1903 * @sizes[]: contains the size (in bytes) of each plane.
1904 * @alloc_ctxs: ptr to allocation context
1906 * This callback function is called when reqbuf() is called to adjust
1907 * the buffer count and buffer size
1909 static int vpfe_queue_setup(struct vb2_queue *vq,
1910 const struct v4l2_format *fmt,
1911 unsigned int *nbuffers, unsigned int *nplanes,
1912 unsigned int sizes[], void *alloc_ctxs[])
1914 struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
1916 if (fmt && fmt->fmt.pix.sizeimage < vpfe->fmt.fmt.pix.sizeimage)
1919 if (vq->num_buffers + *nbuffers < 3)
1920 *nbuffers = 3 - vq->num_buffers;
1923 sizes[0] = fmt ? fmt->fmt.pix.sizeimage : vpfe->fmt.fmt.pix.sizeimage;
1924 alloc_ctxs[0] = vpfe->alloc_ctx;
1927 "nbuffers=%d, size=%u\n", *nbuffers, sizes[0]);
1929 /* Calculate field offset */
1930 vpfe_calculate_offsets(vpfe);
1936 * vpfe_buffer_prepare : callback function for buffer prepare
1937 * @vb: ptr to vb2_buffer
1939 * This is the callback function for buffer prepare when vb2_qbuf()
1940 * function is called. The buffer is prepared and user space virtual address
1941 * or user address is converted into physical address
1943 static int vpfe_buffer_prepare(struct vb2_buffer *vb)
1945 struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);
1947 vb2_set_plane_payload(vb, 0, vpfe->fmt.fmt.pix.sizeimage);
1949 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
1952 vb->v4l2_buf.field = vpfe->fmt.fmt.pix.field;
1958 * vpfe_buffer_queue : Callback function to add buffer to DMA queue
1959 * @vb: ptr to vb2_buffer
1961 static void vpfe_buffer_queue(struct vb2_buffer *vb)
1963 struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);
1964 struct vpfe_cap_buffer *buf = to_vpfe_buffer(vb);
1965 unsigned long flags = 0;
1967 /* add the buffer to the DMA queue */
1968 spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
1969 list_add_tail(&buf->list, &vpfe->dma_queue);
1970 spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
1974 * vpfe_start_streaming : Starts the DMA engine for streaming
1975 * @vb: ptr to vb2_buffer
1976 * @count: number of buffers
1978 static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count)
1980 struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
1981 struct vpfe_cap_buffer *buf, *tmp;
1982 struct vpfe_subdev_info *sdinfo;
1983 unsigned long flags;
1987 spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
1992 sdinfo = vpfe->current_subdev;
1994 vpfe_attach_irq(vpfe);
1996 if (vpfe->ccdc.ccdc_cfg.if_type == VPFE_RAW_BAYER)
1997 vpfe_ccdc_config_raw(&vpfe->ccdc);
1999 vpfe_ccdc_config_ycbcr(&vpfe->ccdc);
2001 /* Get the next frame from the buffer queue */
2002 vpfe->next_frm = list_entry(vpfe->dma_queue.next,
2003 struct vpfe_cap_buffer, list);
2004 vpfe->cur_frm = vpfe->next_frm;
2005 /* Remove buffer from the buffer queue */
2006 list_del(&vpfe->cur_frm->list);
2007 spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
2009 addr = vb2_dma_contig_plane_dma_addr(&vpfe->cur_frm->vb, 0);
2011 vpfe_set_sdr_addr(&vpfe->ccdc, (unsigned long)(addr));
2013 vpfe_pcr_enable(&vpfe->ccdc, 1);
2015 ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 1);
2017 vpfe_err(vpfe, "Error in attaching interrupt handle\n");
2024 list_for_each_entry_safe(buf, tmp, &vpfe->dma_queue, list) {
2025 list_del(&buf->list);
2026 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
2033 * vpfe_stop_streaming : Stop the DMA engine
2034 * @vq: ptr to vb2_queue
2036 * This callback stops the DMA engine and any remaining buffers
2037 * in the DMA queue are released.
2039 static void vpfe_stop_streaming(struct vb2_queue *vq)
2041 struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
2042 struct vpfe_subdev_info *sdinfo;
2043 unsigned long flags;
2046 vpfe_pcr_enable(&vpfe->ccdc, 0);
2048 vpfe_detach_irq(vpfe);
2050 sdinfo = vpfe->current_subdev;
2051 ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 0);
2052 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
2053 vpfe_dbg(1, vpfe, "stream off failed in subdev\n");
2055 /* release all active buffers */
2056 spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
2057 if (vpfe->cur_frm == vpfe->next_frm) {
2058 vb2_buffer_done(&vpfe->cur_frm->vb, VB2_BUF_STATE_ERROR);
2060 if (vpfe->cur_frm != NULL)
2061 vb2_buffer_done(&vpfe->cur_frm->vb,
2062 VB2_BUF_STATE_ERROR);
2063 if (vpfe->next_frm != NULL)
2064 vb2_buffer_done(&vpfe->next_frm->vb,
2065 VB2_BUF_STATE_ERROR);
2068 while (!list_empty(&vpfe->dma_queue)) {
2069 vpfe->next_frm = list_entry(vpfe->dma_queue.next,
2070 struct vpfe_cap_buffer, list);
2071 list_del(&vpfe->next_frm->list);
2072 vb2_buffer_done(&vpfe->next_frm->vb, VB2_BUF_STATE_ERROR);
2074 spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
2077 static int vpfe_cropcap(struct file *file, void *priv,
2078 struct v4l2_cropcap *crop)
2080 struct vpfe_device *vpfe = video_drvdata(file);
2082 vpfe_dbg(2, vpfe, "vpfe_cropcap\n");
2084 if (vpfe->std_index >= ARRAY_SIZE(vpfe_standards))
2087 memset(crop, 0, sizeof(struct v4l2_cropcap));
2089 crop->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2090 crop->defrect.width = vpfe_standards[vpfe->std_index].width;
2091 crop->bounds.width = crop->defrect.width;
2092 crop->defrect.height = vpfe_standards[vpfe->std_index].height;
2093 crop->bounds.height = crop->defrect.height;
2094 crop->pixelaspect = vpfe_standards[vpfe->std_index].pixelaspect;
2100 vpfe_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
2102 struct vpfe_device *vpfe = video_drvdata(file);
2104 switch (s->target) {
2105 case V4L2_SEL_TGT_CROP_BOUNDS:
2106 case V4L2_SEL_TGT_CROP_DEFAULT:
2107 s->r.left = s->r.top = 0;
2108 s->r.width = vpfe->crop.width;
2109 s->r.height = vpfe->crop.height;
2112 case V4L2_SEL_TGT_CROP:
2123 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
2125 if (a->left < b->left || a->top < b->top)
2128 if (a->left + a->width > b->left + b->width)
2131 if (a->top + a->height > b->top + b->height)
2138 vpfe_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
2140 struct vpfe_device *vpfe = video_drvdata(file);
2141 struct v4l2_rect cr = vpfe->crop;
2142 struct v4l2_rect r = s->r;
2144 /* If streaming is started, return error */
2145 if (vb2_is_busy(&vpfe->buffer_queue)) {
2146 vpfe_err(vpfe, "%s device busy\n", __func__);
2150 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2151 s->target != V4L2_SEL_TGT_CROP)
2154 v4l_bound_align_image(&r.width, 0, cr.width, 0,
2155 &r.height, 0, cr.height, 0, 0);
2157 r.left = clamp_t(unsigned int, r.left, 0, cr.width - r.width);
2158 r.top = clamp_t(unsigned int, r.top, 0, cr.height - r.height);
2160 if (s->flags & V4L2_SEL_FLAG_LE && !enclosed_rectangle(&r, &s->r))
2163 if (s->flags & V4L2_SEL_FLAG_GE && !enclosed_rectangle(&s->r, &r))
2166 s->r = vpfe->crop = r;
2168 vpfe_ccdc_set_image_window(&vpfe->ccdc, &r, vpfe->bpp);
2169 vpfe->fmt.fmt.pix.width = r.width;
2170 vpfe->fmt.fmt.pix.height = r.height;
2171 vpfe->fmt.fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc);
2172 vpfe->fmt.fmt.pix.sizeimage = vpfe->fmt.fmt.pix.bytesperline *
2173 vpfe->fmt.fmt.pix.height;
2175 vpfe_dbg(1, vpfe, "cropped (%d,%d)/%dx%d of %dx%d\n",
2176 r.left, r.top, r.width, r.height, cr.width, cr.height);
2181 static long vpfe_ioctl_default(struct file *file, void *priv,
2182 bool valid_prio, unsigned int cmd, void *param)
2184 struct vpfe_device *vpfe = video_drvdata(file);
2187 vpfe_dbg(2, vpfe, "vpfe_ioctl_default\n");
2190 vpfe_err(vpfe, "%s device busy\n", __func__);
2194 /* If streaming is started, return error */
2195 if (vb2_is_busy(&vpfe->buffer_queue)) {
2196 vpfe_err(vpfe, "%s device busy\n", __func__);
2201 case VIDIOC_AM437X_CCDC_CFG:
2202 ret = vpfe_ccdc_set_params(&vpfe->ccdc, (void __user *)param);
2205 "Error setting parameters in CCDC\n");
2208 ret = vpfe_get_ccdc_image_format(vpfe,
2212 "Invalid image format at CCDC\n");
2225 static const struct vb2_ops vpfe_video_qops = {
2226 .wait_prepare = vb2_ops_wait_prepare,
2227 .wait_finish = vb2_ops_wait_finish,
2228 .queue_setup = vpfe_queue_setup,
2229 .buf_prepare = vpfe_buffer_prepare,
2230 .buf_queue = vpfe_buffer_queue,
2231 .start_streaming = vpfe_start_streaming,
2232 .stop_streaming = vpfe_stop_streaming,
2235 /* vpfe capture driver file operations */
2236 static const struct v4l2_file_operations vpfe_fops = {
2237 .owner = THIS_MODULE,
2239 .release = vpfe_release,
2240 .read = vb2_fop_read,
2241 .poll = vb2_fop_poll,
2242 .unlocked_ioctl = video_ioctl2,
2243 .mmap = vb2_fop_mmap,
2246 /* vpfe capture ioctl operations */
2247 static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
2248 .vidioc_querycap = vpfe_querycap,
2249 .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt,
2250 .vidioc_g_fmt_vid_cap = vpfe_g_fmt,
2251 .vidioc_s_fmt_vid_cap = vpfe_s_fmt,
2252 .vidioc_try_fmt_vid_cap = vpfe_try_fmt,
2254 .vidioc_enum_framesizes = vpfe_enum_size,
2256 .vidioc_enum_input = vpfe_enum_input,
2257 .vidioc_g_input = vpfe_g_input,
2258 .vidioc_s_input = vpfe_s_input,
2260 .vidioc_querystd = vpfe_querystd,
2261 .vidioc_s_std = vpfe_s_std,
2262 .vidioc_g_std = vpfe_g_std,
2264 .vidioc_reqbufs = vb2_ioctl_reqbufs,
2265 .vidioc_create_bufs = vb2_ioctl_create_bufs,
2266 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
2267 .vidioc_querybuf = vb2_ioctl_querybuf,
2268 .vidioc_qbuf = vb2_ioctl_qbuf,
2269 .vidioc_dqbuf = vb2_ioctl_dqbuf,
2270 .vidioc_expbuf = vb2_ioctl_expbuf,
2271 .vidioc_streamon = vb2_ioctl_streamon,
2272 .vidioc_streamoff = vb2_ioctl_streamoff,
2274 .vidioc_log_status = v4l2_ctrl_log_status,
2275 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2276 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2278 .vidioc_cropcap = vpfe_cropcap,
2279 .vidioc_g_selection = vpfe_g_selection,
2280 .vidioc_s_selection = vpfe_s_selection,
2282 .vidioc_default = vpfe_ioctl_default,
2286 vpfe_async_bound(struct v4l2_async_notifier *notifier,
2287 struct v4l2_subdev *subdev,
2288 struct v4l2_async_subdev *asd)
2290 struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,
2291 struct vpfe_device, v4l2_dev);
2292 struct v4l2_subdev_mbus_code_enum mbus_code;
2293 struct vpfe_subdev_info *sdinfo;
2297 vpfe_dbg(1, vpfe, "vpfe_async_bound\n");
2299 for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
2300 if (vpfe->cfg->asd[i]->match.of.node == asd[i].match.of.node) {
2301 sdinfo = &vpfe->cfg->sub_devs[i];
2302 vpfe->sd[i] = subdev;
2303 vpfe->sd[i]->grp_id = sdinfo->grp_id;
2310 vpfe_info(vpfe, "sub device (%s) not matched\n", subdev->name);
2314 vpfe->video_dev.tvnorms |= sdinfo->inputs[0].std;
2316 /* setup the supported formats & indexes */
2317 for (j = 0, i = 0; ; ++j) {
2318 struct vpfe_fmt *fmt;
2321 memset(&mbus_code, 0, sizeof(mbus_code));
2322 mbus_code.index = j;
2323 mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
2324 ret = v4l2_subdev_call(subdev, pad, enum_mbus_code,
2329 fmt = find_format_by_code(mbus_code.code);
2333 fmt->supported = true;
2340 static int vpfe_probe_complete(struct vpfe_device *vpfe)
2342 struct video_device *vdev;
2343 struct vb2_queue *q;
2346 spin_lock_init(&vpfe->dma_queue_lock);
2347 mutex_init(&vpfe->lock);
2349 vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2351 /* set first sub device as current one */
2352 vpfe->current_subdev = &vpfe->cfg->sub_devs[0];
2353 vpfe->v4l2_dev.ctrl_handler = vpfe->sd[0]->ctrl_handler;
2355 err = vpfe_set_input(vpfe, 0);
2359 /* Initialize videobuf2 queue as per the buffer type */
2360 vpfe->alloc_ctx = vb2_dma_contig_init_ctx(vpfe->pdev);
2361 if (IS_ERR(vpfe->alloc_ctx)) {
2362 vpfe_err(vpfe, "Failed to get the context\n");
2363 err = PTR_ERR(vpfe->alloc_ctx);
2367 q = &vpfe->buffer_queue;
2368 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2369 q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
2371 q->ops = &vpfe_video_qops;
2372 q->mem_ops = &vb2_dma_contig_memops;
2373 q->buf_struct_size = sizeof(struct vpfe_cap_buffer);
2374 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
2375 q->lock = &vpfe->lock;
2376 q->min_buffers_needed = 1;
2378 err = vb2_queue_init(q);
2380 vpfe_err(vpfe, "vb2_queue_init() failed\n");
2381 vb2_dma_contig_cleanup_ctx(vpfe->alloc_ctx);
2385 INIT_LIST_HEAD(&vpfe->dma_queue);
2387 vdev = &vpfe->video_dev;
2388 strlcpy(vdev->name, VPFE_MODULE_NAME, sizeof(vdev->name));
2389 vdev->release = video_device_release_empty;
2390 vdev->fops = &vpfe_fops;
2391 vdev->ioctl_ops = &vpfe_ioctl_ops;
2392 vdev->v4l2_dev = &vpfe->v4l2_dev;
2393 vdev->vfl_dir = VFL_DIR_RX;
2395 vdev->lock = &vpfe->lock;
2396 video_set_drvdata(vdev, vpfe);
2397 err = video_register_device(&vpfe->video_dev, VFL_TYPE_GRABBER, -1);
2400 "Unable to register video device.\n");
2407 v4l2_device_unregister(&vpfe->v4l2_dev);
2411 static int vpfe_async_complete(struct v4l2_async_notifier *notifier)
2413 struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,
2414 struct vpfe_device, v4l2_dev);
2416 return vpfe_probe_complete(vpfe);
2419 static struct vpfe_config *
2420 vpfe_get_pdata(struct platform_device *pdev)
2422 struct device_node *endpoint = NULL;
2423 struct v4l2_of_endpoint bus_cfg;
2424 struct vpfe_subdev_info *sdinfo;
2425 struct vpfe_config *pdata;
2430 dev_dbg(&pdev->dev, "vpfe_get_pdata\n");
2432 if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
2433 return pdev->dev.platform_data;
2435 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
2439 for (i = 0; ; i++) {
2440 struct device_node *rem;
2442 endpoint = of_graph_get_next_endpoint(pdev->dev.of_node,
2447 sdinfo = &pdata->sub_devs[i];
2450 /* we only support camera */
2451 sdinfo->inputs[0].index = i;
2452 strcpy(sdinfo->inputs[0].name, "Camera");
2453 sdinfo->inputs[0].type = V4L2_INPUT_TYPE_CAMERA;
2454 sdinfo->inputs[0].std = V4L2_STD_ALL;
2455 sdinfo->inputs[0].capabilities = V4L2_IN_CAP_STD;
2457 sdinfo->can_route = 0;
2458 sdinfo->routes = NULL;
2460 of_property_read_u32(endpoint, "ti,am437x-vpfe-interface",
2461 &sdinfo->vpfe_param.if_type);
2462 if (sdinfo->vpfe_param.if_type < 0 ||
2463 sdinfo->vpfe_param.if_type > 4) {
2464 sdinfo->vpfe_param.if_type = VPFE_RAW_BAYER;
2467 err = v4l2_of_parse_endpoint(endpoint, &bus_cfg);
2469 dev_err(&pdev->dev, "Could not parse the endpoint\n");
2473 sdinfo->vpfe_param.bus_width = bus_cfg.bus.parallel.bus_width;
2475 if (sdinfo->vpfe_param.bus_width < 8 ||
2476 sdinfo->vpfe_param.bus_width > 16) {
2477 dev_err(&pdev->dev, "Invalid bus width.\n");
2481 flags = bus_cfg.bus.parallel.flags;
2483 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
2484 sdinfo->vpfe_param.hdpol = 1;
2486 if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
2487 sdinfo->vpfe_param.vdpol = 1;
2489 rem = of_graph_get_remote_port_parent(endpoint);
2491 dev_err(&pdev->dev, "Remote device at %s not found\n",
2492 endpoint->full_name);
2496 pdata->asd[i] = devm_kzalloc(&pdev->dev,
2497 sizeof(struct v4l2_async_subdev),
2499 if (!pdata->asd[i]) {
2505 pdata->asd[i]->match_type = V4L2_ASYNC_MATCH_OF;
2506 pdata->asd[i]->match.of.node = rem;
2510 of_node_put(endpoint);
2514 of_node_put(endpoint);
2519 * vpfe_probe : This function creates device entries by register
2520 * itself to the V4L2 driver and initializes fields of each
2523 static int vpfe_probe(struct platform_device *pdev)
2525 struct vpfe_config *vpfe_cfg = vpfe_get_pdata(pdev);
2526 struct vpfe_device *vpfe;
2527 struct vpfe_ccdc *ccdc;
2528 struct resource *res;
2532 dev_err(&pdev->dev, "No platform data\n");
2536 vpfe = devm_kzalloc(&pdev->dev, sizeof(*vpfe), GFP_KERNEL);
2540 vpfe->pdev = &pdev->dev;
2541 vpfe->cfg = vpfe_cfg;
2544 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2545 ccdc->ccdc_cfg.base_addr = devm_ioremap_resource(&pdev->dev, res);
2546 if (IS_ERR(ccdc->ccdc_cfg.base_addr))
2547 return PTR_ERR(ccdc->ccdc_cfg.base_addr);
2549 vpfe->irq = platform_get_irq(pdev, 0);
2550 if (vpfe->irq <= 0) {
2551 dev_err(&pdev->dev, "No IRQ resource\n");
2555 ret = devm_request_irq(vpfe->pdev, vpfe->irq, vpfe_isr, 0,
2556 "vpfe_capture0", vpfe);
2558 dev_err(&pdev->dev, "Unable to request interrupt\n");
2562 ret = v4l2_device_register(&pdev->dev, &vpfe->v4l2_dev);
2565 "Unable to register v4l2 device.\n");
2569 /* set the driver data in platform device */
2570 platform_set_drvdata(pdev, vpfe);
2571 /* Enabling module functional clock */
2572 pm_runtime_enable(&pdev->dev);
2574 /* for now just enable it here instead of waiting for the open */
2575 pm_runtime_get_sync(&pdev->dev);
2577 vpfe_ccdc_config_defaults(ccdc);
2579 pm_runtime_put_sync(&pdev->dev);
2581 vpfe->sd = devm_kzalloc(&pdev->dev, sizeof(struct v4l2_subdev *) *
2582 ARRAY_SIZE(vpfe->cfg->asd), GFP_KERNEL);
2585 goto probe_out_v4l2_unregister;
2588 vpfe->notifier.subdevs = vpfe->cfg->asd;
2589 vpfe->notifier.num_subdevs = ARRAY_SIZE(vpfe->cfg->asd);
2590 vpfe->notifier.bound = vpfe_async_bound;
2591 vpfe->notifier.complete = vpfe_async_complete;
2592 ret = v4l2_async_notifier_register(&vpfe->v4l2_dev,
2595 vpfe_err(vpfe, "Error registering async notifier\n");
2597 goto probe_out_v4l2_unregister;
2602 probe_out_v4l2_unregister:
2603 v4l2_device_unregister(&vpfe->v4l2_dev);
2608 * vpfe_remove : It un-register device from V4L2 driver
2610 static int vpfe_remove(struct platform_device *pdev)
2612 struct vpfe_device *vpfe = platform_get_drvdata(pdev);
2614 vpfe_dbg(2, vpfe, "vpfe_remove\n");
2616 pm_runtime_disable(&pdev->dev);
2618 v4l2_async_notifier_unregister(&vpfe->notifier);
2619 v4l2_device_unregister(&vpfe->v4l2_dev);
2620 video_unregister_device(&vpfe->video_dev);
2625 #ifdef CONFIG_PM_SLEEP
2627 static void vpfe_save_context(struct vpfe_ccdc *ccdc)
2629 ccdc->ccdc_ctx[VPFE_PCR >> 2] = vpfe_reg_read(ccdc, VPFE_PCR);
2630 ccdc->ccdc_ctx[VPFE_SYNMODE >> 2] = vpfe_reg_read(ccdc, VPFE_SYNMODE);
2631 ccdc->ccdc_ctx[VPFE_SDOFST >> 2] = vpfe_reg_read(ccdc, VPFE_SDOFST);
2632 ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2] = vpfe_reg_read(ccdc, VPFE_SDR_ADDR);
2633 ccdc->ccdc_ctx[VPFE_CLAMP >> 2] = vpfe_reg_read(ccdc, VPFE_CLAMP);
2634 ccdc->ccdc_ctx[VPFE_DCSUB >> 2] = vpfe_reg_read(ccdc, VPFE_DCSUB);
2635 ccdc->ccdc_ctx[VPFE_COLPTN >> 2] = vpfe_reg_read(ccdc, VPFE_COLPTN);
2636 ccdc->ccdc_ctx[VPFE_BLKCMP >> 2] = vpfe_reg_read(ccdc, VPFE_BLKCMP);
2637 ccdc->ccdc_ctx[VPFE_VDINT >> 2] = vpfe_reg_read(ccdc, VPFE_VDINT);
2638 ccdc->ccdc_ctx[VPFE_ALAW >> 2] = vpfe_reg_read(ccdc, VPFE_ALAW);
2639 ccdc->ccdc_ctx[VPFE_REC656IF >> 2] = vpfe_reg_read(ccdc, VPFE_REC656IF);
2640 ccdc->ccdc_ctx[VPFE_CCDCFG >> 2] = vpfe_reg_read(ccdc, VPFE_CCDCFG);
2641 ccdc->ccdc_ctx[VPFE_CULLING >> 2] = vpfe_reg_read(ccdc, VPFE_CULLING);
2642 ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2] = vpfe_reg_read(ccdc,
2644 ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2] = vpfe_reg_read(ccdc,
2646 ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2] = vpfe_reg_read(ccdc,
2648 ccdc->ccdc_ctx[VPFE_VERT_START >> 2] = vpfe_reg_read(ccdc,
2650 ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2] = vpfe_reg_read(ccdc,
2652 ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2] = vpfe_reg_read(ccdc,
2656 static int vpfe_suspend(struct device *dev)
2658 struct platform_device *pdev = to_platform_device(dev);
2659 struct vpfe_device *vpfe = platform_get_drvdata(pdev);
2660 struct vpfe_ccdc *ccdc = &vpfe->ccdc;
2662 /* if streaming has not started we don't care */
2663 if (!vb2_start_streaming_called(&vpfe->buffer_queue))
2666 pm_runtime_get_sync(dev);
2667 vpfe_config_enable(ccdc, 1);
2669 /* Save VPFE context */
2670 vpfe_save_context(ccdc);
2673 vpfe_pcr_enable(ccdc, 0);
2674 vpfe_config_enable(ccdc, 0);
2676 /* Disable both master and slave clock */
2677 pm_runtime_put_sync(dev);
2679 /* Select sleep pin state */
2680 pinctrl_pm_select_sleep_state(dev);
2685 static void vpfe_restore_context(struct vpfe_ccdc *ccdc)
2687 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SYNMODE >> 2], VPFE_SYNMODE);
2688 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CULLING >> 2], VPFE_CULLING);
2689 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDOFST >> 2], VPFE_SDOFST);
2690 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2], VPFE_SDR_ADDR);
2691 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CLAMP >> 2], VPFE_CLAMP);
2692 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_DCSUB >> 2], VPFE_DCSUB);
2693 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_COLPTN >> 2], VPFE_COLPTN);
2694 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_BLKCMP >> 2], VPFE_BLKCMP);
2695 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VDINT >> 2], VPFE_VDINT);
2696 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_ALAW >> 2], VPFE_ALAW);
2697 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_REC656IF >> 2], VPFE_REC656IF);
2698 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CCDCFG >> 2], VPFE_CCDCFG);
2699 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PCR >> 2], VPFE_PCR);
2700 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2],
2702 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2],
2704 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2],
2706 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_START >> 2],
2708 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2],
2710 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2],
2714 static int vpfe_resume(struct device *dev)
2716 struct platform_device *pdev = to_platform_device(dev);
2717 struct vpfe_device *vpfe = platform_get_drvdata(pdev);
2718 struct vpfe_ccdc *ccdc = &vpfe->ccdc;
2720 /* if streaming has not started we don't care */
2721 if (!vb2_start_streaming_called(&vpfe->buffer_queue))
2724 /* Enable both master and slave clock */
2725 pm_runtime_get_sync(dev);
2726 vpfe_config_enable(ccdc, 1);
2728 /* Restore VPFE context */
2729 vpfe_restore_context(ccdc);
2731 vpfe_config_enable(ccdc, 0);
2732 pm_runtime_put_sync(dev);
2734 /* Select default pin state */
2735 pinctrl_pm_select_default_state(dev);
2742 static SIMPLE_DEV_PM_OPS(vpfe_pm_ops, vpfe_suspend, vpfe_resume);
2744 static const struct of_device_id vpfe_of_match[] = {
2745 { .compatible = "ti,am437x-vpfe", },
2748 MODULE_DEVICE_TABLE(of, vpfe_of_match);
2750 static struct platform_driver vpfe_driver = {
2751 .probe = vpfe_probe,
2752 .remove = vpfe_remove,
2754 .name = VPFE_MODULE_NAME,
2756 .of_match_table = of_match_ptr(vpfe_of_match),
2760 module_platform_driver(vpfe_driver);
2762 MODULE_AUTHOR("Texas Instruments");
2763 MODULE_DESCRIPTION("TI AM437x VPFE driver");
2764 MODULE_LICENSE("GPL");
2765 MODULE_VERSION(VPFE_VERSION);