2 * TI OMAP4 ISS V4L2 Driver - ISP IPIPEIF module
4 * Copyright (C) 2012 Texas Instruments, Inc.
6 * Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #include <linux/module.h>
15 #include <linux/uaccess.h>
16 #include <linux/delay.h>
17 #include <linux/device.h>
18 #include <linux/dma-mapping.h>
20 #include <linux/sched.h>
24 #include "iss_ipipeif.h"
26 static const unsigned int ipipeif_fmts[] = {
27 MEDIA_BUS_FMT_SGRBG10_1X10,
28 MEDIA_BUS_FMT_SRGGB10_1X10,
29 MEDIA_BUS_FMT_SBGGR10_1X10,
30 MEDIA_BUS_FMT_SGBRG10_1X10,
31 MEDIA_BUS_FMT_UYVY8_1X16,
32 MEDIA_BUS_FMT_YUYV8_1X16,
36 * ipipeif_print_status - Print current IPIPEIF Module register values.
37 * @ipipeif: Pointer to ISS ISP IPIPEIF device.
39 * Also prints other debug information stored in the IPIPEIF module.
41 #define IPIPEIF_PRINT_REGISTER(iss, name)\
42 dev_dbg(iss->dev, "###IPIPEIF " #name "=0x%08x\n", \
43 iss_reg_read(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_##name))
45 #define ISIF_PRINT_REGISTER(iss, name)\
46 dev_dbg(iss->dev, "###ISIF " #name "=0x%08x\n", \
47 iss_reg_read(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_##name))
49 #define ISP5_PRINT_REGISTER(iss, name)\
50 dev_dbg(iss->dev, "###ISP5 " #name "=0x%08x\n", \
51 iss_reg_read(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_##name))
53 static void ipipeif_print_status(struct iss_ipipeif_device *ipipeif)
55 struct iss_device *iss = to_iss_device(ipipeif);
57 dev_dbg(iss->dev, "-------------IPIPEIF Register dump-------------\n");
59 IPIPEIF_PRINT_REGISTER(iss, CFG1);
60 IPIPEIF_PRINT_REGISTER(iss, CFG2);
62 ISIF_PRINT_REGISTER(iss, SYNCEN);
63 ISIF_PRINT_REGISTER(iss, CADU);
64 ISIF_PRINT_REGISTER(iss, CADL);
65 ISIF_PRINT_REGISTER(iss, MODESET);
66 ISIF_PRINT_REGISTER(iss, CCOLP);
67 ISIF_PRINT_REGISTER(iss, SPH);
68 ISIF_PRINT_REGISTER(iss, LNH);
69 ISIF_PRINT_REGISTER(iss, LNV);
70 ISIF_PRINT_REGISTER(iss, VDINT(0));
71 ISIF_PRINT_REGISTER(iss, HSIZE);
73 ISP5_PRINT_REGISTER(iss, SYSCONFIG);
74 ISP5_PRINT_REGISTER(iss, CTRL);
75 ISP5_PRINT_REGISTER(iss, IRQSTATUS(0));
76 ISP5_PRINT_REGISTER(iss, IRQENABLE_SET(0));
77 ISP5_PRINT_REGISTER(iss, IRQENABLE_CLR(0));
79 dev_dbg(iss->dev, "-----------------------------------------------\n");
82 static void ipipeif_write_enable(struct iss_ipipeif_device *ipipeif, u8 enable)
84 struct iss_device *iss = to_iss_device(ipipeif);
86 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SYNCEN,
87 ISIF_SYNCEN_DWEN, enable ? ISIF_SYNCEN_DWEN : 0);
91 * ipipeif_enable - Enable/Disable IPIPEIF.
92 * @enable: enable flag
95 static void ipipeif_enable(struct iss_ipipeif_device *ipipeif, u8 enable)
97 struct iss_device *iss = to_iss_device(ipipeif);
99 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SYNCEN,
100 ISIF_SYNCEN_SYEN, enable ? ISIF_SYNCEN_SYEN : 0);
103 /* -----------------------------------------------------------------------------
104 * Format- and pipeline-related configuration helpers
108 * ipipeif_set_outaddr - Set memory address to save output image
109 * @ipipeif: Pointer to ISP IPIPEIF device.
110 * @addr: 32-bit memory address aligned on 32 byte boundary.
112 * Sets the memory address where the output will be saved.
114 static void ipipeif_set_outaddr(struct iss_ipipeif_device *ipipeif, u32 addr)
116 struct iss_device *iss = to_iss_device(ipipeif);
118 /* Save address splitted in Base Address H & L */
119 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CADU,
120 (addr >> (16 + 5)) & ISIF_CADU_MASK);
121 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CADL,
122 (addr >> 5) & ISIF_CADL_MASK);
125 static void ipipeif_configure(struct iss_ipipeif_device *ipipeif)
127 struct iss_device *iss = to_iss_device(ipipeif);
128 const struct iss_format_info *info;
129 struct v4l2_mbus_framefmt *format;
132 omap4iss_configure_bridge(iss, ipipeif->input);
134 /* IPIPEIF_PAD_SINK */
135 format = &ipipeif->formats[IPIPEIF_PAD_SINK];
137 /* IPIPEIF with YUV422 input from ISIF */
138 iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG1,
139 IPIPEIF_CFG1_INPSRC1_MASK | IPIPEIF_CFG1_INPSRC2_MASK);
141 /* Select ISIF/IPIPEIF input format */
142 switch (format->code) {
143 case MEDIA_BUS_FMT_UYVY8_1X16:
144 case MEDIA_BUS_FMT_YUYV8_1X16:
145 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_MODESET,
146 ISIF_MODESET_CCDMD | ISIF_MODESET_INPMOD_MASK |
147 ISIF_MODESET_CCDW_MASK,
148 ISIF_MODESET_INPMOD_YCBCR16);
150 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG2,
151 IPIPEIF_CFG2_YUV8, IPIPEIF_CFG2_YUV16);
154 case MEDIA_BUS_FMT_SGRBG10_1X10:
155 isif_ccolp = ISIF_CCOLP_CP0_F0_GR |
156 ISIF_CCOLP_CP1_F0_R |
157 ISIF_CCOLP_CP2_F0_B |
158 ISIF_CCOLP_CP3_F0_GB;
160 case MEDIA_BUS_FMT_SRGGB10_1X10:
161 isif_ccolp = ISIF_CCOLP_CP0_F0_R |
162 ISIF_CCOLP_CP1_F0_GR |
163 ISIF_CCOLP_CP2_F0_GB |
166 case MEDIA_BUS_FMT_SBGGR10_1X10:
167 isif_ccolp = ISIF_CCOLP_CP0_F0_B |
168 ISIF_CCOLP_CP1_F0_GB |
169 ISIF_CCOLP_CP2_F0_GR |
172 case MEDIA_BUS_FMT_SGBRG10_1X10:
173 isif_ccolp = ISIF_CCOLP_CP0_F0_GB |
174 ISIF_CCOLP_CP1_F0_B |
175 ISIF_CCOLP_CP2_F0_R |
176 ISIF_CCOLP_CP3_F0_GR;
178 iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG2,
181 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_MODESET,
182 ISIF_MODESET_CCDMD | ISIF_MODESET_INPMOD_MASK |
183 ISIF_MODESET_CCDW_MASK, ISIF_MODESET_INPMOD_RAW |
184 ISIF_MODESET_CCDW_2BIT);
186 info = omap4iss_video_format_info(format->code);
187 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CGAMMAWD,
188 ISIF_CGAMMAWD_GWDI_MASK,
189 ISIF_CGAMMAWD_GWDI(info->bpp));
191 /* Set RAW Bayer pattern */
192 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CCOLP,
197 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SPH, 0 & ISIF_SPH_MASK);
198 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_LNH,
199 (format->width - 1) & ISIF_LNH_MASK);
200 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_LNV,
201 (format->height - 1) & ISIF_LNV_MASK);
203 /* Generate ISIF0 on the last line of the image */
204 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_VDINT(0),
207 /* IPIPEIF_PAD_SOURCE_ISIF_SF */
208 format = &ipipeif->formats[IPIPEIF_PAD_SOURCE_ISIF_SF];
210 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_HSIZE,
211 (ipipeif->video_out.bpl_value >> 5) &
212 ISIF_HSIZE_HSIZE_MASK);
214 /* IPIPEIF_PAD_SOURCE_VP */
218 /* -----------------------------------------------------------------------------
222 static void ipipeif_isr_buffer(struct iss_ipipeif_device *ipipeif)
224 struct iss_buffer *buffer;
226 /* The ISIF generates VD0 interrupts even when writes are disabled.
227 * deal with it anyway). Disabling the ISIF when no buffer is available
228 * is thus not be enough, we need to handle the situation explicitly.
230 if (list_empty(&ipipeif->video_out.dmaqueue))
233 ipipeif_write_enable(ipipeif, 0);
235 buffer = omap4iss_video_buffer_next(&ipipeif->video_out);
239 ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
241 ipipeif_write_enable(ipipeif, 1);
245 * omap4iss_ipipeif_isr - Configure ipipeif during interframe time.
246 * @ipipeif: Pointer to ISP IPIPEIF device.
247 * @events: IPIPEIF events
249 void omap4iss_ipipeif_isr(struct iss_ipipeif_device *ipipeif, u32 events)
251 if (omap4iss_module_sync_is_stopping(&ipipeif->wait,
255 if ((events & ISP5_IRQ_ISIF_INT(0)) &&
256 (ipipeif->output & IPIPEIF_OUTPUT_MEMORY))
257 ipipeif_isr_buffer(ipipeif);
260 /* -----------------------------------------------------------------------------
261 * ISP video operations
264 static int ipipeif_video_queue(struct iss_video *video,
265 struct iss_buffer *buffer)
267 struct iss_ipipeif_device *ipipeif = container_of(video,
268 struct iss_ipipeif_device, video_out);
270 if (!(ipipeif->output & IPIPEIF_OUTPUT_MEMORY))
273 ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
276 * If streaming was enabled before there was a buffer queued
277 * or underrun happened in the ISR, the hardware was not enabled
278 * and DMA queue flag ISS_VIDEO_DMAQUEUE_UNDERRUN is still set.
281 if (video->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_UNDERRUN) {
282 if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
283 ipipeif_write_enable(ipipeif, 1);
284 ipipeif_enable(ipipeif, 1);
285 iss_video_dmaqueue_flags_clr(video);
291 static const struct iss_video_operations ipipeif_video_ops = {
292 .queue = ipipeif_video_queue,
295 /* -----------------------------------------------------------------------------
296 * V4L2 subdev operations
299 #define IPIPEIF_DRV_SUBCLK_MASK (OMAP4_ISS_ISP_SUBCLK_IPIPEIF |\
300 OMAP4_ISS_ISP_SUBCLK_ISIF)
302 * ipipeif_set_stream - Enable/Disable streaming on the IPIPEIF module
303 * @sd: ISP IPIPEIF V4L2 subdevice
304 * @enable: Enable/disable stream
306 static int ipipeif_set_stream(struct v4l2_subdev *sd, int enable)
308 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
309 struct iss_device *iss = to_iss_device(ipipeif);
310 struct iss_video *video_out = &ipipeif->video_out;
313 if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED) {
314 if (enable == ISS_PIPELINE_STREAM_STOPPED)
317 omap4iss_isp_subclk_enable(iss, IPIPEIF_DRV_SUBCLK_MASK);
321 case ISS_PIPELINE_STREAM_CONTINUOUS:
323 ipipeif_configure(ipipeif);
324 ipipeif_print_status(ipipeif);
327 * When outputting to memory with no buffer available, let the
328 * buffer queue handler start the hardware. A DMA queue flag
329 * ISS_VIDEO_DMAQUEUE_QUEUED will be set as soon as there is
330 * a buffer available.
332 if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY &&
333 !(video_out->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_QUEUED))
336 atomic_set(&ipipeif->stopping, 0);
337 if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
338 ipipeif_write_enable(ipipeif, 1);
339 ipipeif_enable(ipipeif, 1);
340 iss_video_dmaqueue_flags_clr(video_out);
343 case ISS_PIPELINE_STREAM_STOPPED:
344 if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED)
346 if (omap4iss_module_sync_idle(&sd->entity, &ipipeif->wait,
350 if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
351 ipipeif_write_enable(ipipeif, 0);
352 ipipeif_enable(ipipeif, 0);
353 omap4iss_isp_subclk_disable(iss, IPIPEIF_DRV_SUBCLK_MASK);
354 iss_video_dmaqueue_flags_clr(video_out);
358 ipipeif->state = enable;
362 static struct v4l2_mbus_framefmt *
363 __ipipeif_get_format(struct iss_ipipeif_device *ipipeif,
364 struct v4l2_subdev_pad_config *cfg, unsigned int pad,
365 enum v4l2_subdev_format_whence which)
367 if (which == V4L2_SUBDEV_FORMAT_TRY)
368 return v4l2_subdev_get_try_format(&ipipeif->subdev, cfg, pad);
369 return &ipipeif->formats[pad];
373 * ipipeif_try_format - Try video format on a pad
374 * @ipipeif: ISS IPIPEIF device
375 * @cfg: V4L2 subdev pad config
380 ipipeif_try_format(struct iss_ipipeif_device *ipipeif,
381 struct v4l2_subdev_pad_config *cfg, unsigned int pad,
382 struct v4l2_mbus_framefmt *fmt,
383 enum v4l2_subdev_format_whence which)
385 struct v4l2_mbus_framefmt *format;
386 unsigned int width = fmt->width;
387 unsigned int height = fmt->height;
391 case IPIPEIF_PAD_SINK:
392 /* TODO: If the IPIPEIF output formatter pad is connected
393 * directly to the resizer, only YUV formats can be used.
395 for (i = 0; i < ARRAY_SIZE(ipipeif_fmts); i++) {
396 if (fmt->code == ipipeif_fmts[i])
400 /* If not found, use SGRBG10 as default */
401 if (i >= ARRAY_SIZE(ipipeif_fmts))
402 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
404 /* Clamp the input size. */
405 fmt->width = clamp_t(u32, width, 1, 8192);
406 fmt->height = clamp_t(u32, height, 1, 8192);
409 case IPIPEIF_PAD_SOURCE_ISIF_SF:
410 format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
412 memcpy(fmt, format, sizeof(*fmt));
414 /* The data formatter truncates the number of horizontal output
415 * pixels to a multiple of 16. To avoid clipping data, allow
416 * callers to request an output size bigger than the input size
417 * up to the nearest multiple of 16.
419 fmt->width = clamp_t(u32, width, 32, (fmt->width + 15) & ~15);
421 fmt->height = clamp_t(u32, height, 32, fmt->height);
424 case IPIPEIF_PAD_SOURCE_VP:
425 format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
427 memcpy(fmt, format, sizeof(*fmt));
429 fmt->width = clamp_t(u32, width, 32, fmt->width);
430 fmt->height = clamp_t(u32, height, 32, fmt->height);
434 /* Data is written to memory unpacked, each 10-bit or 12-bit pixel is
437 fmt->colorspace = V4L2_COLORSPACE_SRGB;
438 fmt->field = V4L2_FIELD_NONE;
442 * ipipeif_enum_mbus_code - Handle pixel format enumeration
443 * @sd : pointer to v4l2 subdev structure
444 * @cfg : V4L2 subdev pad config
445 * @code : pointer to v4l2_subdev_mbus_code_enum structure
446 * return -EINVAL or zero on success
448 static int ipipeif_enum_mbus_code(struct v4l2_subdev *sd,
449 struct v4l2_subdev_pad_config *cfg,
450 struct v4l2_subdev_mbus_code_enum *code)
452 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
453 struct v4l2_mbus_framefmt *format;
456 case IPIPEIF_PAD_SINK:
457 if (code->index >= ARRAY_SIZE(ipipeif_fmts))
460 code->code = ipipeif_fmts[code->index];
463 case IPIPEIF_PAD_SOURCE_ISIF_SF:
464 case IPIPEIF_PAD_SOURCE_VP:
465 /* No format conversion inside IPIPEIF */
466 if (code->index != 0)
469 format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
472 code->code = format->code;
482 static int ipipeif_enum_frame_size(struct v4l2_subdev *sd,
483 struct v4l2_subdev_pad_config *cfg,
484 struct v4l2_subdev_frame_size_enum *fse)
486 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
487 struct v4l2_mbus_framefmt format;
492 format.code = fse->code;
495 ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
496 fse->min_width = format.width;
497 fse->min_height = format.height;
499 if (format.code != fse->code)
502 format.code = fse->code;
505 ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
506 fse->max_width = format.width;
507 fse->max_height = format.height;
513 * ipipeif_get_format - Retrieve the video format on a pad
514 * @sd : ISP IPIPEIF V4L2 subdevice
515 * @cfg: V4L2 subdev pad config
518 * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
519 * to the format type.
521 static int ipipeif_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
522 struct v4l2_subdev_format *fmt)
524 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
525 struct v4l2_mbus_framefmt *format;
527 format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
531 fmt->format = *format;
536 * ipipeif_set_format - Set the video format on a pad
537 * @sd : ISP IPIPEIF V4L2 subdevice
538 * @cfg: V4L2 subdev pad config
541 * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
542 * to the format type.
544 static int ipipeif_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
545 struct v4l2_subdev_format *fmt)
547 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
548 struct v4l2_mbus_framefmt *format;
550 format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
554 ipipeif_try_format(ipipeif, cfg, fmt->pad, &fmt->format, fmt->which);
555 *format = fmt->format;
557 /* Propagate the format from sink to source */
558 if (fmt->pad == IPIPEIF_PAD_SINK) {
559 format = __ipipeif_get_format(ipipeif, cfg,
560 IPIPEIF_PAD_SOURCE_ISIF_SF,
562 *format = fmt->format;
563 ipipeif_try_format(ipipeif, cfg, IPIPEIF_PAD_SOURCE_ISIF_SF,
566 format = __ipipeif_get_format(ipipeif, cfg,
567 IPIPEIF_PAD_SOURCE_VP,
569 *format = fmt->format;
570 ipipeif_try_format(ipipeif, cfg, IPIPEIF_PAD_SOURCE_VP, format,
577 static int ipipeif_link_validate(struct v4l2_subdev *sd,
578 struct media_link *link,
579 struct v4l2_subdev_format *source_fmt,
580 struct v4l2_subdev_format *sink_fmt)
582 /* Check if the two ends match */
583 if (source_fmt->format.width != sink_fmt->format.width ||
584 source_fmt->format.height != sink_fmt->format.height)
587 if (source_fmt->format.code != sink_fmt->format.code)
594 * ipipeif_init_formats - Initialize formats on all pads
595 * @sd: ISP IPIPEIF V4L2 subdevice
596 * @fh: V4L2 subdev file handle
598 * Initialize all pad formats with default values. If fh is not NULL, try
599 * formats are initialized on the file handle. Otherwise active formats are
600 * initialized on the device.
602 static int ipipeif_init_formats(struct v4l2_subdev *sd,
603 struct v4l2_subdev_fh *fh)
605 struct v4l2_subdev_format format;
607 memset(&format, 0, sizeof(format));
608 format.pad = IPIPEIF_PAD_SINK;
609 format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
610 format.format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
611 format.format.width = 4096;
612 format.format.height = 4096;
613 ipipeif_set_format(sd, fh ? fh->pad : NULL, &format);
618 /* V4L2 subdev video operations */
619 static const struct v4l2_subdev_video_ops ipipeif_v4l2_video_ops = {
620 .s_stream = ipipeif_set_stream,
623 /* V4L2 subdev pad operations */
624 static const struct v4l2_subdev_pad_ops ipipeif_v4l2_pad_ops = {
625 .enum_mbus_code = ipipeif_enum_mbus_code,
626 .enum_frame_size = ipipeif_enum_frame_size,
627 .get_fmt = ipipeif_get_format,
628 .set_fmt = ipipeif_set_format,
629 .link_validate = ipipeif_link_validate,
632 /* V4L2 subdev operations */
633 static const struct v4l2_subdev_ops ipipeif_v4l2_ops = {
634 .video = &ipipeif_v4l2_video_ops,
635 .pad = &ipipeif_v4l2_pad_ops,
638 /* V4L2 subdev internal operations */
639 static const struct v4l2_subdev_internal_ops ipipeif_v4l2_internal_ops = {
640 .open = ipipeif_init_formats,
643 /* -----------------------------------------------------------------------------
644 * Media entity operations
648 * ipipeif_link_setup - Setup IPIPEIF connections
649 * @entity: IPIPEIF media entity
650 * @local: Pad at the local end of the link
651 * @remote: Pad at the remote end of the link
654 * return -EINVAL or zero on success
656 static int ipipeif_link_setup(struct media_entity *entity,
657 const struct media_pad *local,
658 const struct media_pad *remote, u32 flags)
660 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
661 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
662 struct iss_device *iss = to_iss_device(ipipeif);
664 switch (local->index | media_entity_type(remote->entity)) {
665 case IPIPEIF_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
666 /* Read from the sensor CSI2a or CSI2b. */
667 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
668 ipipeif->input = IPIPEIF_INPUT_NONE;
672 if (ipipeif->input != IPIPEIF_INPUT_NONE)
675 if (remote->entity == &iss->csi2a.subdev.entity)
676 ipipeif->input = IPIPEIF_INPUT_CSI2A;
677 else if (remote->entity == &iss->csi2b.subdev.entity)
678 ipipeif->input = IPIPEIF_INPUT_CSI2B;
682 case IPIPEIF_PAD_SOURCE_ISIF_SF | MEDIA_ENT_T_DEVNODE:
683 /* Write to memory */
684 if (flags & MEDIA_LNK_FL_ENABLED) {
685 if (ipipeif->output & ~IPIPEIF_OUTPUT_MEMORY)
687 ipipeif->output |= IPIPEIF_OUTPUT_MEMORY;
689 ipipeif->output &= ~IPIPEIF_OUTPUT_MEMORY;
693 case IPIPEIF_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV:
694 /* Send to IPIPE/RESIZER */
695 if (flags & MEDIA_LNK_FL_ENABLED) {
696 if (ipipeif->output & ~IPIPEIF_OUTPUT_VP)
698 ipipeif->output |= IPIPEIF_OUTPUT_VP;
700 ipipeif->output &= ~IPIPEIF_OUTPUT_VP;
711 /* media operations */
712 static const struct media_entity_operations ipipeif_media_ops = {
713 .link_setup = ipipeif_link_setup,
714 .link_validate = v4l2_subdev_link_validate,
718 * ipipeif_init_entities - Initialize V4L2 subdev and media entity
719 * @ipipeif: ISS ISP IPIPEIF module
721 * Return 0 on success and a negative error code on failure.
723 static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif)
725 struct v4l2_subdev *sd = &ipipeif->subdev;
726 struct media_pad *pads = ipipeif->pads;
727 struct media_entity *me = &sd->entity;
730 ipipeif->input = IPIPEIF_INPUT_NONE;
732 v4l2_subdev_init(sd, &ipipeif_v4l2_ops);
733 sd->internal_ops = &ipipeif_v4l2_internal_ops;
734 strlcpy(sd->name, "OMAP4 ISS ISP IPIPEIF", sizeof(sd->name));
735 sd->grp_id = 1 << 16; /* group ID for iss subdevs */
736 v4l2_set_subdevdata(sd, ipipeif);
737 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
739 pads[IPIPEIF_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
740 pads[IPIPEIF_PAD_SOURCE_ISIF_SF].flags = MEDIA_PAD_FL_SOURCE;
741 pads[IPIPEIF_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
743 me->ops = &ipipeif_media_ops;
744 ret = media_entity_init(me, IPIPEIF_PADS_NUM, pads, 0);
748 ipipeif_init_formats(sd, NULL);
750 ipipeif->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
751 ipipeif->video_out.ops = &ipipeif_video_ops;
752 ipipeif->video_out.iss = to_iss_device(ipipeif);
753 ipipeif->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
754 ipipeif->video_out.bpl_alignment = 32;
755 ipipeif->video_out.bpl_zero_padding = 1;
756 ipipeif->video_out.bpl_max = 0x1ffe0;
758 ret = omap4iss_video_init(&ipipeif->video_out, "ISP IPIPEIF");
762 /* Connect the IPIPEIF subdev to the video node. */
763 ret = media_entity_create_link(&ipipeif->subdev.entity,
764 IPIPEIF_PAD_SOURCE_ISIF_SF,
765 &ipipeif->video_out.video.entity, 0, 0);
772 void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device *ipipeif)
774 v4l2_device_unregister_subdev(&ipipeif->subdev);
775 omap4iss_video_unregister(&ipipeif->video_out);
778 int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif,
779 struct v4l2_device *vdev)
783 /* Register the subdev and video node. */
784 ret = v4l2_device_register_subdev(vdev, &ipipeif->subdev);
788 ret = omap4iss_video_register(&ipipeif->video_out, vdev);
795 omap4iss_ipipeif_unregister_entities(ipipeif);
799 /* -----------------------------------------------------------------------------
800 * ISP IPIPEIF initialisation and cleanup
804 * omap4iss_ipipeif_init - IPIPEIF module initialization.
805 * @iss: Device pointer specific to the OMAP4 ISS.
807 * TODO: Get the initialisation values from platform data.
809 * Return 0 on success or a negative error code otherwise.
811 int omap4iss_ipipeif_init(struct iss_device *iss)
813 struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
815 ipipeif->state = ISS_PIPELINE_STREAM_STOPPED;
816 init_waitqueue_head(&ipipeif->wait);
818 return ipipeif_init_entities(ipipeif);
822 * omap4iss_ipipeif_cleanup - IPIPEIF module cleanup.
823 * @iss: Device pointer specific to the OMAP4 ISS.
825 void omap4iss_ipipeif_cleanup(struct iss_device *iss)
827 struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
829 media_entity_cleanup(&ipipeif->subdev.entity);