1 // SPDX-License-Identifier: GPL-2.0+
3 * TI OMAP4 ISS V4L2 Driver - ISP IPIPEIF module
5 * Copyright (C) 2012 Texas Instruments, Inc.
7 * Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
10 #include <linux/module.h>
11 #include <linux/uaccess.h>
12 #include <linux/delay.h>
13 #include <linux/device.h>
14 #include <linux/dma-mapping.h>
16 #include <linux/sched.h>
20 #include "iss_ipipeif.h"
22 static const unsigned int ipipeif_fmts[] = {
23 MEDIA_BUS_FMT_SGRBG10_1X10,
24 MEDIA_BUS_FMT_SRGGB10_1X10,
25 MEDIA_BUS_FMT_SBGGR10_1X10,
26 MEDIA_BUS_FMT_SGBRG10_1X10,
27 MEDIA_BUS_FMT_UYVY8_1X16,
28 MEDIA_BUS_FMT_YUYV8_1X16,
32 * ipipeif_print_status - Print current IPIPEIF Module register values.
33 * @ipipeif: Pointer to ISS ISP IPIPEIF device.
35 * Also prints other debug information stored in the IPIPEIF module.
37 #define IPIPEIF_PRINT_REGISTER(iss, name)\
38 dev_dbg(iss->dev, "###IPIPEIF " #name "=0x%08x\n", \
39 iss_reg_read(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_##name))
41 #define ISIF_PRINT_REGISTER(iss, name)\
42 dev_dbg(iss->dev, "###ISIF " #name "=0x%08x\n", \
43 iss_reg_read(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_##name))
45 #define ISP5_PRINT_REGISTER(iss, name)\
46 dev_dbg(iss->dev, "###ISP5 " #name "=0x%08x\n", \
47 iss_reg_read(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_##name))
49 static void ipipeif_print_status(struct iss_ipipeif_device *ipipeif)
51 struct iss_device *iss = to_iss_device(ipipeif);
53 dev_dbg(iss->dev, "-------------IPIPEIF Register dump-------------\n");
55 IPIPEIF_PRINT_REGISTER(iss, CFG1);
56 IPIPEIF_PRINT_REGISTER(iss, CFG2);
58 ISIF_PRINT_REGISTER(iss, SYNCEN);
59 ISIF_PRINT_REGISTER(iss, CADU);
60 ISIF_PRINT_REGISTER(iss, CADL);
61 ISIF_PRINT_REGISTER(iss, MODESET);
62 ISIF_PRINT_REGISTER(iss, CCOLP);
63 ISIF_PRINT_REGISTER(iss, SPH);
64 ISIF_PRINT_REGISTER(iss, LNH);
65 ISIF_PRINT_REGISTER(iss, LNV);
66 ISIF_PRINT_REGISTER(iss, VDINT(0));
67 ISIF_PRINT_REGISTER(iss, HSIZE);
69 ISP5_PRINT_REGISTER(iss, SYSCONFIG);
70 ISP5_PRINT_REGISTER(iss, CTRL);
71 ISP5_PRINT_REGISTER(iss, IRQSTATUS(0));
72 ISP5_PRINT_REGISTER(iss, IRQENABLE_SET(0));
73 ISP5_PRINT_REGISTER(iss, IRQENABLE_CLR(0));
75 dev_dbg(iss->dev, "-----------------------------------------------\n");
78 static void ipipeif_write_enable(struct iss_ipipeif_device *ipipeif, u8 enable)
80 struct iss_device *iss = to_iss_device(ipipeif);
82 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SYNCEN,
83 ISIF_SYNCEN_DWEN, enable ? ISIF_SYNCEN_DWEN : 0);
87 * ipipeif_enable - Enable/Disable IPIPEIF.
88 * @enable: enable flag
91 static void ipipeif_enable(struct iss_ipipeif_device *ipipeif, u8 enable)
93 struct iss_device *iss = to_iss_device(ipipeif);
95 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SYNCEN,
96 ISIF_SYNCEN_SYEN, enable ? ISIF_SYNCEN_SYEN : 0);
99 /* -----------------------------------------------------------------------------
100 * Format- and pipeline-related configuration helpers
104 * ipipeif_set_outaddr - Set memory address to save output image
105 * @ipipeif: Pointer to ISP IPIPEIF device.
106 * @addr: 32-bit memory address aligned on 32 byte boundary.
108 * Sets the memory address where the output will be saved.
110 static void ipipeif_set_outaddr(struct iss_ipipeif_device *ipipeif, u32 addr)
112 struct iss_device *iss = to_iss_device(ipipeif);
114 /* Save address split in Base Address H & L */
115 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CADU,
116 (addr >> (16 + 5)) & ISIF_CADU_MASK);
117 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CADL,
118 (addr >> 5) & ISIF_CADL_MASK);
121 static void ipipeif_configure(struct iss_ipipeif_device *ipipeif)
123 struct iss_device *iss = to_iss_device(ipipeif);
124 const struct iss_format_info *info;
125 struct v4l2_mbus_framefmt *format;
128 omap4iss_configure_bridge(iss, ipipeif->input);
130 /* IPIPEIF_PAD_SINK */
131 format = &ipipeif->formats[IPIPEIF_PAD_SINK];
133 /* IPIPEIF with YUV422 input from ISIF */
134 iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG1,
135 IPIPEIF_CFG1_INPSRC1_MASK | IPIPEIF_CFG1_INPSRC2_MASK);
137 /* Select ISIF/IPIPEIF input format */
138 switch (format->code) {
139 case MEDIA_BUS_FMT_UYVY8_1X16:
140 case MEDIA_BUS_FMT_YUYV8_1X16:
141 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_MODESET,
142 ISIF_MODESET_CCDMD | ISIF_MODESET_INPMOD_MASK |
143 ISIF_MODESET_CCDW_MASK,
144 ISIF_MODESET_INPMOD_YCBCR16);
146 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG2,
147 IPIPEIF_CFG2_YUV8, IPIPEIF_CFG2_YUV16);
150 case MEDIA_BUS_FMT_SGRBG10_1X10:
151 isif_ccolp = ISIF_CCOLP_CP0_F0_GR |
152 ISIF_CCOLP_CP1_F0_R |
153 ISIF_CCOLP_CP2_F0_B |
154 ISIF_CCOLP_CP3_F0_GB;
156 case MEDIA_BUS_FMT_SRGGB10_1X10:
157 isif_ccolp = ISIF_CCOLP_CP0_F0_R |
158 ISIF_CCOLP_CP1_F0_GR |
159 ISIF_CCOLP_CP2_F0_GB |
162 case MEDIA_BUS_FMT_SBGGR10_1X10:
163 isif_ccolp = ISIF_CCOLP_CP0_F0_B |
164 ISIF_CCOLP_CP1_F0_GB |
165 ISIF_CCOLP_CP2_F0_GR |
168 case MEDIA_BUS_FMT_SGBRG10_1X10:
169 isif_ccolp = ISIF_CCOLP_CP0_F0_GB |
170 ISIF_CCOLP_CP1_F0_B |
171 ISIF_CCOLP_CP2_F0_R |
172 ISIF_CCOLP_CP3_F0_GR;
174 iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG2,
177 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_MODESET,
178 ISIF_MODESET_CCDMD | ISIF_MODESET_INPMOD_MASK |
179 ISIF_MODESET_CCDW_MASK, ISIF_MODESET_INPMOD_RAW |
180 ISIF_MODESET_CCDW_2BIT);
182 info = omap4iss_video_format_info(format->code);
183 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CGAMMAWD,
184 ISIF_CGAMMAWD_GWDI_MASK,
185 ISIF_CGAMMAWD_GWDI(info->bpp));
187 /* Set RAW Bayer pattern */
188 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CCOLP,
193 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SPH, 0 & ISIF_SPH_MASK);
194 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_LNH,
195 (format->width - 1) & ISIF_LNH_MASK);
196 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_LNV,
197 (format->height - 1) & ISIF_LNV_MASK);
199 /* Generate ISIF0 on the last line of the image */
200 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_VDINT(0),
203 /* IPIPEIF_PAD_SOURCE_ISIF_SF */
204 format = &ipipeif->formats[IPIPEIF_PAD_SOURCE_ISIF_SF];
206 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_HSIZE,
207 (ipipeif->video_out.bpl_value >> 5) &
208 ISIF_HSIZE_HSIZE_MASK);
210 /* IPIPEIF_PAD_SOURCE_VP */
214 /* -----------------------------------------------------------------------------
218 static void ipipeif_isr_buffer(struct iss_ipipeif_device *ipipeif)
220 struct iss_buffer *buffer;
222 /* The ISIF generates VD0 interrupts even when writes are disabled.
223 * deal with it anyway). Disabling the ISIF when no buffer is available
224 * is thus not be enough, we need to handle the situation explicitly.
226 if (list_empty(&ipipeif->video_out.dmaqueue))
229 ipipeif_write_enable(ipipeif, 0);
231 buffer = omap4iss_video_buffer_next(&ipipeif->video_out);
235 ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
237 ipipeif_write_enable(ipipeif, 1);
241 * omap4iss_ipipeif_isr - Configure ipipeif during interframe time.
242 * @ipipeif: Pointer to ISP IPIPEIF device.
243 * @events: IPIPEIF events
245 void omap4iss_ipipeif_isr(struct iss_ipipeif_device *ipipeif, u32 events)
247 if (omap4iss_module_sync_is_stopping(&ipipeif->wait,
251 if ((events & ISP5_IRQ_ISIF_INT(0)) &&
252 (ipipeif->output & IPIPEIF_OUTPUT_MEMORY))
253 ipipeif_isr_buffer(ipipeif);
256 /* -----------------------------------------------------------------------------
257 * ISP video operations
260 static int ipipeif_video_queue(struct iss_video *video,
261 struct iss_buffer *buffer)
263 struct iss_ipipeif_device *ipipeif = container_of(video,
264 struct iss_ipipeif_device, video_out);
266 if (!(ipipeif->output & IPIPEIF_OUTPUT_MEMORY))
269 ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
272 * If streaming was enabled before there was a buffer queued
273 * or underrun happened in the ISR, the hardware was not enabled
274 * and DMA queue flag ISS_VIDEO_DMAQUEUE_UNDERRUN is still set.
277 if (video->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_UNDERRUN) {
278 if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
279 ipipeif_write_enable(ipipeif, 1);
280 ipipeif_enable(ipipeif, 1);
281 iss_video_dmaqueue_flags_clr(video);
287 static const struct iss_video_operations ipipeif_video_ops = {
288 .queue = ipipeif_video_queue,
291 /* -----------------------------------------------------------------------------
292 * V4L2 subdev operations
295 #define IPIPEIF_DRV_SUBCLK_MASK (OMAP4_ISS_ISP_SUBCLK_IPIPEIF |\
296 OMAP4_ISS_ISP_SUBCLK_ISIF)
298 * ipipeif_set_stream - Enable/Disable streaming on the IPIPEIF module
299 * @sd: ISP IPIPEIF V4L2 subdevice
300 * @enable: Enable/disable stream
302 static int ipipeif_set_stream(struct v4l2_subdev *sd, int enable)
304 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
305 struct iss_device *iss = to_iss_device(ipipeif);
306 struct iss_video *video_out = &ipipeif->video_out;
309 if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED) {
310 if (enable == ISS_PIPELINE_STREAM_STOPPED)
313 omap4iss_isp_subclk_enable(iss, IPIPEIF_DRV_SUBCLK_MASK);
317 case ISS_PIPELINE_STREAM_CONTINUOUS:
319 ipipeif_configure(ipipeif);
320 ipipeif_print_status(ipipeif);
323 * When outputting to memory with no buffer available, let the
324 * buffer queue handler start the hardware. A DMA queue flag
325 * ISS_VIDEO_DMAQUEUE_QUEUED will be set as soon as there is
326 * a buffer available.
328 if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY &&
329 !(video_out->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_QUEUED))
332 atomic_set(&ipipeif->stopping, 0);
333 if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
334 ipipeif_write_enable(ipipeif, 1);
335 ipipeif_enable(ipipeif, 1);
336 iss_video_dmaqueue_flags_clr(video_out);
339 case ISS_PIPELINE_STREAM_STOPPED:
340 if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED)
342 if (omap4iss_module_sync_idle(&sd->entity, &ipipeif->wait,
346 if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
347 ipipeif_write_enable(ipipeif, 0);
348 ipipeif_enable(ipipeif, 0);
349 omap4iss_isp_subclk_disable(iss, IPIPEIF_DRV_SUBCLK_MASK);
350 iss_video_dmaqueue_flags_clr(video_out);
354 ipipeif->state = enable;
358 static struct v4l2_mbus_framefmt *
359 __ipipeif_get_format(struct iss_ipipeif_device *ipipeif,
360 struct v4l2_subdev_pad_config *cfg, unsigned int pad,
361 enum v4l2_subdev_format_whence which)
363 if (which == V4L2_SUBDEV_FORMAT_TRY)
364 return v4l2_subdev_get_try_format(&ipipeif->subdev, cfg, pad);
365 return &ipipeif->formats[pad];
369 * ipipeif_try_format - Try video format on a pad
370 * @ipipeif: ISS IPIPEIF device
371 * @cfg: V4L2 subdev pad config
376 ipipeif_try_format(struct iss_ipipeif_device *ipipeif,
377 struct v4l2_subdev_pad_config *cfg, unsigned int pad,
378 struct v4l2_mbus_framefmt *fmt,
379 enum v4l2_subdev_format_whence which)
381 struct v4l2_mbus_framefmt *format;
382 unsigned int width = fmt->width;
383 unsigned int height = fmt->height;
387 case IPIPEIF_PAD_SINK:
388 /* TODO: If the IPIPEIF output formatter pad is connected
389 * directly to the resizer, only YUV formats can be used.
391 for (i = 0; i < ARRAY_SIZE(ipipeif_fmts); i++) {
392 if (fmt->code == ipipeif_fmts[i])
396 /* If not found, use SGRBG10 as default */
397 if (i >= ARRAY_SIZE(ipipeif_fmts))
398 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
400 /* Clamp the input size. */
401 fmt->width = clamp_t(u32, width, 1, 8192);
402 fmt->height = clamp_t(u32, height, 1, 8192);
405 case IPIPEIF_PAD_SOURCE_ISIF_SF:
406 format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
408 memcpy(fmt, format, sizeof(*fmt));
410 /* The data formatter truncates the number of horizontal output
411 * pixels to a multiple of 16. To avoid clipping data, allow
412 * callers to request an output size bigger than the input size
413 * up to the nearest multiple of 16.
415 fmt->width = clamp_t(u32, width, 32, (fmt->width + 15) & ~15);
417 fmt->height = clamp_t(u32, height, 32, fmt->height);
420 case IPIPEIF_PAD_SOURCE_VP:
421 format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
423 memcpy(fmt, format, sizeof(*fmt));
425 fmt->width = clamp_t(u32, width, 32, fmt->width);
426 fmt->height = clamp_t(u32, height, 32, fmt->height);
430 /* Data is written to memory unpacked, each 10-bit or 12-bit pixel is
433 fmt->colorspace = V4L2_COLORSPACE_SRGB;
434 fmt->field = V4L2_FIELD_NONE;
438 * ipipeif_enum_mbus_code - Handle pixel format enumeration
439 * @sd : pointer to v4l2 subdev structure
440 * @cfg : V4L2 subdev pad config
441 * @code : pointer to v4l2_subdev_mbus_code_enum structure
442 * return -EINVAL or zero on success
444 static int ipipeif_enum_mbus_code(struct v4l2_subdev *sd,
445 struct v4l2_subdev_pad_config *cfg,
446 struct v4l2_subdev_mbus_code_enum *code)
448 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
449 struct v4l2_mbus_framefmt *format;
452 case IPIPEIF_PAD_SINK:
453 if (code->index >= ARRAY_SIZE(ipipeif_fmts))
456 code->code = ipipeif_fmts[code->index];
459 case IPIPEIF_PAD_SOURCE_ISIF_SF:
460 case IPIPEIF_PAD_SOURCE_VP:
461 /* No format conversion inside IPIPEIF */
462 if (code->index != 0)
465 format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
468 code->code = format->code;
478 static int ipipeif_enum_frame_size(struct v4l2_subdev *sd,
479 struct v4l2_subdev_pad_config *cfg,
480 struct v4l2_subdev_frame_size_enum *fse)
482 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
483 struct v4l2_mbus_framefmt format;
488 format.code = fse->code;
491 ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
492 fse->min_width = format.width;
493 fse->min_height = format.height;
495 if (format.code != fse->code)
498 format.code = fse->code;
501 ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
502 fse->max_width = format.width;
503 fse->max_height = format.height;
509 * ipipeif_get_format - Retrieve the video format on a pad
510 * @sd : ISP IPIPEIF V4L2 subdevice
511 * @cfg: V4L2 subdev pad config
514 * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
515 * to the format type.
517 static int ipipeif_get_format(struct v4l2_subdev *sd,
518 struct v4l2_subdev_pad_config *cfg,
519 struct v4l2_subdev_format *fmt)
521 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
522 struct v4l2_mbus_framefmt *format;
524 format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
528 fmt->format = *format;
533 * ipipeif_set_format - Set the video format on a pad
534 * @sd : ISP IPIPEIF V4L2 subdevice
535 * @cfg: V4L2 subdev pad config
538 * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
539 * to the format type.
541 static int ipipeif_set_format(struct v4l2_subdev *sd,
542 struct v4l2_subdev_pad_config *cfg,
543 struct v4l2_subdev_format *fmt)
545 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
546 struct v4l2_mbus_framefmt *format;
548 format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
552 ipipeif_try_format(ipipeif, cfg, fmt->pad, &fmt->format, fmt->which);
553 *format = fmt->format;
555 /* Propagate the format from sink to source */
556 if (fmt->pad == IPIPEIF_PAD_SINK) {
557 format = __ipipeif_get_format(ipipeif, cfg,
558 IPIPEIF_PAD_SOURCE_ISIF_SF,
560 *format = fmt->format;
561 ipipeif_try_format(ipipeif, cfg, IPIPEIF_PAD_SOURCE_ISIF_SF,
564 format = __ipipeif_get_format(ipipeif, cfg,
565 IPIPEIF_PAD_SOURCE_VP,
567 *format = fmt->format;
568 ipipeif_try_format(ipipeif, cfg, IPIPEIF_PAD_SOURCE_VP, format,
575 static int ipipeif_link_validate(struct v4l2_subdev *sd,
576 struct media_link *link,
577 struct v4l2_subdev_format *source_fmt,
578 struct v4l2_subdev_format *sink_fmt)
580 /* Check if the two ends match */
581 if (source_fmt->format.width != sink_fmt->format.width ||
582 source_fmt->format.height != sink_fmt->format.height)
585 if (source_fmt->format.code != sink_fmt->format.code)
592 * ipipeif_init_formats - Initialize formats on all pads
593 * @sd: ISP IPIPEIF V4L2 subdevice
594 * @fh: V4L2 subdev file handle
596 * Initialize all pad formats with default values. If fh is not NULL, try
597 * formats are initialized on the file handle. Otherwise active formats are
598 * initialized on the device.
600 static int ipipeif_init_formats(struct v4l2_subdev *sd,
601 struct v4l2_subdev_fh *fh)
603 struct v4l2_subdev_format format;
605 memset(&format, 0, sizeof(format));
606 format.pad = IPIPEIF_PAD_SINK;
607 format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
608 format.format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
609 format.format.width = 4096;
610 format.format.height = 4096;
611 ipipeif_set_format(sd, fh ? fh->pad : NULL, &format);
616 /* V4L2 subdev video operations */
617 static const struct v4l2_subdev_video_ops ipipeif_v4l2_video_ops = {
618 .s_stream = ipipeif_set_stream,
621 /* V4L2 subdev pad operations */
622 static const struct v4l2_subdev_pad_ops ipipeif_v4l2_pad_ops = {
623 .enum_mbus_code = ipipeif_enum_mbus_code,
624 .enum_frame_size = ipipeif_enum_frame_size,
625 .get_fmt = ipipeif_get_format,
626 .set_fmt = ipipeif_set_format,
627 .link_validate = ipipeif_link_validate,
630 /* V4L2 subdev operations */
631 static const struct v4l2_subdev_ops ipipeif_v4l2_ops = {
632 .video = &ipipeif_v4l2_video_ops,
633 .pad = &ipipeif_v4l2_pad_ops,
636 /* V4L2 subdev internal operations */
637 static const struct v4l2_subdev_internal_ops ipipeif_v4l2_internal_ops = {
638 .open = ipipeif_init_formats,
641 /* -----------------------------------------------------------------------------
642 * Media entity operations
646 * ipipeif_link_setup - Setup IPIPEIF connections
647 * @entity: IPIPEIF media entity
648 * @local: Pad at the local end of the link
649 * @remote: Pad at the remote end of the link
652 * return -EINVAL or zero on success
654 static int ipipeif_link_setup(struct media_entity *entity,
655 const struct media_pad *local,
656 const struct media_pad *remote, u32 flags)
658 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
659 struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
660 struct iss_device *iss = to_iss_device(ipipeif);
661 unsigned int index = local->index;
663 /* FIXME: this is actually a hack! */
664 if (is_media_entity_v4l2_subdev(remote->entity))
668 case IPIPEIF_PAD_SINK | 2 << 16:
669 /* Read from the sensor CSI2a or CSI2b. */
670 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
671 ipipeif->input = IPIPEIF_INPUT_NONE;
675 if (ipipeif->input != IPIPEIF_INPUT_NONE)
678 if (remote->entity == &iss->csi2a.subdev.entity)
679 ipipeif->input = IPIPEIF_INPUT_CSI2A;
680 else if (remote->entity == &iss->csi2b.subdev.entity)
681 ipipeif->input = IPIPEIF_INPUT_CSI2B;
685 case IPIPEIF_PAD_SOURCE_ISIF_SF:
686 /* Write to memory */
687 if (flags & MEDIA_LNK_FL_ENABLED) {
688 if (ipipeif->output & ~IPIPEIF_OUTPUT_MEMORY)
690 ipipeif->output |= IPIPEIF_OUTPUT_MEMORY;
692 ipipeif->output &= ~IPIPEIF_OUTPUT_MEMORY;
696 case IPIPEIF_PAD_SOURCE_VP | 2 << 16:
697 /* Send to IPIPE/RESIZER */
698 if (flags & MEDIA_LNK_FL_ENABLED) {
699 if (ipipeif->output & ~IPIPEIF_OUTPUT_VP)
701 ipipeif->output |= IPIPEIF_OUTPUT_VP;
703 ipipeif->output &= ~IPIPEIF_OUTPUT_VP;
714 /* media operations */
715 static const struct media_entity_operations ipipeif_media_ops = {
716 .link_setup = ipipeif_link_setup,
717 .link_validate = v4l2_subdev_link_validate,
721 * ipipeif_init_entities - Initialize V4L2 subdev and media entity
722 * @ipipeif: ISS ISP IPIPEIF module
724 * Return 0 on success and a negative error code on failure.
726 static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif)
728 struct v4l2_subdev *sd = &ipipeif->subdev;
729 struct media_pad *pads = ipipeif->pads;
730 struct media_entity *me = &sd->entity;
733 ipipeif->input = IPIPEIF_INPUT_NONE;
735 v4l2_subdev_init(sd, &ipipeif_v4l2_ops);
736 sd->internal_ops = &ipipeif_v4l2_internal_ops;
737 strscpy(sd->name, "OMAP4 ISS ISP IPIPEIF", sizeof(sd->name));
738 sd->grp_id = BIT(16); /* group ID for iss subdevs */
739 v4l2_set_subdevdata(sd, ipipeif);
740 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
742 pads[IPIPEIF_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
743 pads[IPIPEIF_PAD_SOURCE_ISIF_SF].flags = MEDIA_PAD_FL_SOURCE;
744 pads[IPIPEIF_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
746 me->ops = &ipipeif_media_ops;
747 ret = media_entity_pads_init(me, IPIPEIF_PADS_NUM, pads);
751 ipipeif_init_formats(sd, NULL);
753 ipipeif->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
754 ipipeif->video_out.ops = &ipipeif_video_ops;
755 ipipeif->video_out.iss = to_iss_device(ipipeif);
756 ipipeif->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
757 ipipeif->video_out.bpl_alignment = 32;
758 ipipeif->video_out.bpl_zero_padding = 1;
759 ipipeif->video_out.bpl_max = 0x1ffe0;
761 return omap4iss_video_init(&ipipeif->video_out, "ISP IPIPEIF");
764 void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device *ipipeif)
766 v4l2_device_unregister_subdev(&ipipeif->subdev);
767 omap4iss_video_unregister(&ipipeif->video_out);
770 int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif,
771 struct v4l2_device *vdev)
775 /* Register the subdev and video node. */
776 ret = v4l2_device_register_subdev(vdev, &ipipeif->subdev);
780 ret = omap4iss_video_register(&ipipeif->video_out, vdev);
787 omap4iss_ipipeif_unregister_entities(ipipeif);
791 /* -----------------------------------------------------------------------------
792 * ISP IPIPEIF initialisation and cleanup
796 * omap4iss_ipipeif_init - IPIPEIF module initialization.
797 * @iss: Device pointer specific to the OMAP4 ISS.
799 * TODO: Get the initialisation values from platform data.
801 * Return 0 on success or a negative error code otherwise.
803 int omap4iss_ipipeif_init(struct iss_device *iss)
805 struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
807 ipipeif->state = ISS_PIPELINE_STREAM_STOPPED;
808 init_waitqueue_head(&ipipeif->wait);
810 return ipipeif_init_entities(ipipeif);
814 * omap4iss_ipipeif_create_links() - IPIPEIF pads links creation
815 * @iss: Pointer to ISS device
817 * return negative error code or zero on success
819 int omap4iss_ipipeif_create_links(struct iss_device *iss)
821 struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
823 /* Connect the IPIPEIF subdev to the video node. */
824 return media_create_pad_link(&ipipeif->subdev.entity,
825 IPIPEIF_PAD_SOURCE_ISIF_SF,
826 &ipipeif->video_out.video.entity, 0, 0);
830 * omap4iss_ipipeif_cleanup - IPIPEIF module cleanup.
831 * @iss: Device pointer specific to the OMAP4 ISS.
833 void omap4iss_ipipeif_cleanup(struct iss_device *iss)
835 struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
837 media_entity_cleanup(&ipipeif->subdev.entity);