2 * s3c24xx/s3c64xx SoC series Camera Interface (CAMIF) driver
4 * Copyright (C) 2012 Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
5 * Copyright (C) 2012 Tomasz Figa <tomasz.figa@gmail.com>
7 * Based on drivers/media/platform/s5p-fimc,
8 * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
16 #include <linux/bug.h>
17 #include <linux/clk.h>
18 #include <linux/device.h>
19 #include <linux/errno.h>
20 #include <linux/i2c.h>
21 #include <linux/interrupt.h>
23 #include <linux/kernel.h>
24 #include <linux/list.h>
25 #include <linux/module.h>
26 #include <linux/platform_device.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/ratelimit.h>
29 #include <linux/slab.h>
30 #include <linux/types.h>
31 #include <linux/videodev2.h>
33 #include <media/media-device.h>
34 #include <media/v4l2-ctrls.h>
35 #include <media/v4l2-event.h>
36 #include <media/v4l2-ioctl.h>
37 #include <media/videobuf2-v4l2.h>
38 #include <media/videobuf2-dma-contig.h>
40 #include "camif-core.h"
41 #include "camif-regs.h"
44 module_param(debug, int, 0644);
46 /* Locking: called with vp->camif->slock spinlock held */
47 static void camif_cfg_video_path(struct camif_vp *vp)
49 WARN_ON(s3c_camif_get_scaler_config(vp, &vp->scaler));
50 camif_hw_set_scaler(vp);
51 camif_hw_set_flip(vp);
52 camif_hw_set_target_format(vp);
53 camif_hw_set_output_dma(vp);
56 static void camif_prepare_dma_offset(struct camif_vp *vp)
58 struct camif_frame *f = &vp->out_frame;
60 f->dma_offset.initial = f->rect.top * f->f_width + f->rect.left;
61 f->dma_offset.line = f->f_width - (f->rect.left + f->rect.width);
63 pr_debug("dma_offset: initial: %d, line: %d\n",
64 f->dma_offset.initial, f->dma_offset.line);
67 /* Locking: called with camif->slock spinlock held */
68 static int s3c_camif_hw_init(struct camif_dev *camif, struct camif_vp *vp)
70 const struct s3c_camif_variant *variant = camif->variant;
72 if (camif->sensor.sd == NULL || vp->out_fmt == NULL)
75 if (variant->ip_revision == S3C244X_CAMIF_IP_REV)
76 camif_hw_clear_fifo_overflow(vp);
77 camif_hw_set_camera_bus(camif);
78 camif_hw_set_source_format(camif);
79 camif_hw_set_camera_crop(camif);
80 camif_hw_set_test_pattern(camif, camif->test_pattern);
81 if (variant->has_img_effect)
82 camif_hw_set_effect(camif, camif->colorfx,
83 camif->colorfx_cb, camif->colorfx_cr);
84 if (variant->ip_revision == S3C6410_CAMIF_IP_REV)
85 camif_hw_set_input_path(vp);
86 camif_cfg_video_path(vp);
87 vp->state &= ~ST_VP_CONFIG;
93 * Initialize the video path, only up from the scaler stage. The camera
94 * input interface set up is skipped. This is useful to enable one of the
95 * video paths when the other is already running.
96 * Locking: called with camif->slock spinlock held.
98 static int s3c_camif_hw_vp_init(struct camif_dev *camif, struct camif_vp *vp)
100 unsigned int ip_rev = camif->variant->ip_revision;
102 if (vp->out_fmt == NULL)
105 camif_prepare_dma_offset(vp);
106 if (ip_rev == S3C244X_CAMIF_IP_REV)
107 camif_hw_clear_fifo_overflow(vp);
108 camif_cfg_video_path(vp);
109 vp->state &= ~ST_VP_CONFIG;
113 static int sensor_set_power(struct camif_dev *camif, int on)
115 struct cam_sensor *sensor = &camif->sensor;
118 if (camif->sensor.power_count == !on)
119 err = v4l2_subdev_call(sensor->sd, core, s_power, on);
120 if (err == -ENOIOCTLCMD)
123 sensor->power_count += on ? 1 : -1;
125 pr_debug("on: %d, power_count: %d, err: %d\n",
126 on, sensor->power_count, err);
131 static int sensor_set_streaming(struct camif_dev *camif, int on)
133 struct cam_sensor *sensor = &camif->sensor;
136 if (camif->sensor.stream_count == !on)
137 err = v4l2_subdev_call(sensor->sd, video, s_stream, on);
139 sensor->stream_count += on ? 1 : -1;
141 pr_debug("on: %d, stream_count: %d, err: %d\n",
142 on, sensor->stream_count, err);
148 * Reinitialize the driver so it is ready to start streaming again.
149 * Return any buffers to vb2, perform CAMIF software reset and
150 * turn off streaming at the data pipeline (sensor) if required.
152 static int camif_reinitialize(struct camif_vp *vp)
154 struct camif_dev *camif = vp->camif;
155 struct camif_buffer *buf;
159 spin_lock_irqsave(&camif->slock, flags);
160 streaming = vp->state & ST_VP_SENSOR_STREAMING;
162 vp->state &= ~(ST_VP_PENDING | ST_VP_RUNNING | ST_VP_OFF |
163 ST_VP_ABORTING | ST_VP_STREAMING |
164 ST_VP_SENSOR_STREAMING | ST_VP_LASTIRQ);
166 /* Release unused buffers */
167 while (!list_empty(&vp->pending_buf_q)) {
168 buf = camif_pending_queue_pop(vp);
169 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
172 while (!list_empty(&vp->active_buf_q)) {
173 buf = camif_active_queue_pop(vp);
174 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
177 spin_unlock_irqrestore(&camif->slock, flags);
182 return sensor_set_streaming(camif, 0);
185 static bool s3c_vp_active(struct camif_vp *vp)
187 struct camif_dev *camif = vp->camif;
191 spin_lock_irqsave(&camif->slock, flags);
192 ret = (vp->state & ST_VP_RUNNING) || (vp->state & ST_VP_PENDING);
193 spin_unlock_irqrestore(&camif->slock, flags);
198 static bool camif_is_streaming(struct camif_dev *camif)
203 spin_lock_irqsave(&camif->slock, flags);
204 status = camif->stream_count > 0;
205 spin_unlock_irqrestore(&camif->slock, flags);
210 static int camif_stop_capture(struct camif_vp *vp)
212 struct camif_dev *camif = vp->camif;
216 if (!s3c_vp_active(vp))
219 spin_lock_irqsave(&camif->slock, flags);
220 vp->state &= ~(ST_VP_OFF | ST_VP_LASTIRQ);
221 vp->state |= ST_VP_ABORTING;
222 spin_unlock_irqrestore(&camif->slock, flags);
224 ret = wait_event_timeout(vp->irq_queue,
225 !(vp->state & ST_VP_ABORTING),
226 msecs_to_jiffies(CAMIF_STOP_TIMEOUT));
228 spin_lock_irqsave(&camif->slock, flags);
230 if (ret == 0 && !(vp->state & ST_VP_OFF)) {
231 /* Timed out, forcibly stop capture */
232 vp->state &= ~(ST_VP_OFF | ST_VP_ABORTING |
235 camif_hw_disable_capture(vp);
236 camif_hw_enable_scaler(vp, false);
239 spin_unlock_irqrestore(&camif->slock, flags);
241 return camif_reinitialize(vp);
244 static int camif_prepare_addr(struct camif_vp *vp, struct vb2_buffer *vb,
245 struct camif_addr *paddr)
247 struct camif_frame *frame = &vp->out_frame;
250 if (vb == NULL || frame == NULL)
253 pix_size = frame->rect.width * frame->rect.height;
255 pr_debug("colplanes: %d, pix_size: %u\n",
256 vp->out_fmt->colplanes, pix_size);
258 paddr->y = vb2_dma_contig_plane_dma_addr(vb, 0);
260 switch (vp->out_fmt->colplanes) {
266 /* decompose Y into Y/Cb */
267 paddr->cb = (u32)(paddr->y + pix_size);
271 paddr->cb = (u32)(paddr->y + pix_size);
272 /* decompose Y into Y/Cb/Cr */
273 if (vp->out_fmt->color == IMG_FMT_YCBCR422P)
274 paddr->cr = (u32)(paddr->cb + (pix_size >> 1));
276 paddr->cr = (u32)(paddr->cb + (pix_size >> 2));
278 if (vp->out_fmt->color == IMG_FMT_YCRCB420)
279 swap(paddr->cb, paddr->cr);
285 pr_debug("DMA address: y: %pad cb: %pad cr: %pad\n",
286 &paddr->y, &paddr->cb, &paddr->cr);
291 irqreturn_t s3c_camif_irq_handler(int irq, void *priv)
293 struct camif_vp *vp = priv;
294 struct camif_dev *camif = vp->camif;
295 unsigned int ip_rev = camif->variant->ip_revision;
298 spin_lock(&camif->slock);
300 if (ip_rev == S3C6410_CAMIF_IP_REV)
301 camif_hw_clear_pending_irq(vp);
303 status = camif_hw_get_status(vp);
305 if (ip_rev == S3C244X_CAMIF_IP_REV && (status & CISTATUS_OVF_MASK)) {
306 camif_hw_clear_fifo_overflow(vp);
310 if (vp->state & ST_VP_ABORTING) {
311 if (vp->state & ST_VP_OFF) {
313 vp->state &= ~(ST_VP_OFF | ST_VP_ABORTING |
315 wake_up(&vp->irq_queue);
317 } else if (vp->state & ST_VP_LASTIRQ) {
318 camif_hw_disable_capture(vp);
319 camif_hw_enable_scaler(vp, false);
320 camif_hw_set_lastirq(vp, false);
321 vp->state |= ST_VP_OFF;
323 /* Disable capture, enable last IRQ */
324 camif_hw_set_lastirq(vp, true);
325 vp->state |= ST_VP_LASTIRQ;
329 if (!list_empty(&vp->pending_buf_q) && (vp->state & ST_VP_RUNNING) &&
330 !list_empty(&vp->active_buf_q)) {
332 struct camif_buffer *vbuf;
334 * Get previous DMA write buffer index:
335 * 0 => DMA buffer 0, 2;
336 * 1 => DMA buffer 1, 3.
338 index = (CISTATUS_FRAMECNT(status) + 2) & 1;
339 vbuf = camif_active_queue_peek(vp, index);
341 if (!WARN_ON(vbuf == NULL)) {
342 /* Dequeue a filled buffer */
343 v4l2_get_timestamp(&vbuf->vb.timestamp);
344 vbuf->vb.sequence = vp->frame_sequence++;
345 vb2_buffer_done(&vbuf->vb.vb2_buf, VB2_BUF_STATE_DONE);
347 /* Set up an empty buffer at the DMA engine */
348 vbuf = camif_pending_queue_pop(vp);
350 camif_hw_set_output_addr(vp, &vbuf->paddr, index);
351 camif_hw_set_output_addr(vp, &vbuf->paddr, index + 2);
353 /* Scheduled in H/W, add to the queue */
354 camif_active_queue_add(vp, vbuf);
356 } else if (!(vp->state & ST_VP_ABORTING) &&
357 (vp->state & ST_VP_PENDING)) {
358 vp->state |= ST_VP_RUNNING;
361 if (vp->state & ST_VP_CONFIG) {
362 camif_prepare_dma_offset(vp);
363 camif_hw_set_camera_crop(camif);
364 camif_hw_set_scaler(vp);
365 camif_hw_set_flip(vp);
366 camif_hw_set_test_pattern(camif, camif->test_pattern);
367 if (camif->variant->has_img_effect)
368 camif_hw_set_effect(camif, camif->colorfx,
369 camif->colorfx_cb, camif->colorfx_cr);
370 vp->state &= ~ST_VP_CONFIG;
373 spin_unlock(&camif->slock);
377 static int start_streaming(struct vb2_queue *vq, unsigned int count)
379 struct camif_vp *vp = vb2_get_drv_priv(vq);
380 struct camif_dev *camif = vp->camif;
385 * We assume the codec capture path is always activated
386 * first, before the preview path starts streaming.
387 * This is required to avoid internal FIFO overflow and
388 * a need for CAMIF software reset.
390 spin_lock_irqsave(&camif->slock, flags);
392 if (camif->stream_count == 0) {
393 camif_hw_reset(camif);
394 ret = s3c_camif_hw_init(camif, vp);
396 ret = s3c_camif_hw_vp_init(camif, vp);
398 spin_unlock_irqrestore(&camif->slock, flags);
401 camif_reinitialize(vp);
405 spin_lock_irqsave(&camif->slock, flags);
406 vp->frame_sequence = 0;
407 vp->state |= ST_VP_PENDING;
409 if (!list_empty(&vp->pending_buf_q) &&
410 (!(vp->state & ST_VP_STREAMING) ||
411 !(vp->state & ST_VP_SENSOR_STREAMING))) {
413 camif_hw_enable_scaler(vp, vp->scaler.enable);
414 camif_hw_enable_capture(vp);
415 vp->state |= ST_VP_STREAMING;
417 if (!(vp->state & ST_VP_SENSOR_STREAMING)) {
418 vp->state |= ST_VP_SENSOR_STREAMING;
419 spin_unlock_irqrestore(&camif->slock, flags);
420 ret = sensor_set_streaming(camif, 1);
422 v4l2_err(&vp->vdev, "Sensor s_stream failed\n");
424 camif_hw_dump_regs(camif, __func__);
430 spin_unlock_irqrestore(&camif->slock, flags);
434 static void stop_streaming(struct vb2_queue *vq)
436 struct camif_vp *vp = vb2_get_drv_priv(vq);
437 camif_stop_capture(vp);
440 static int queue_setup(struct vb2_queue *vq, const void *parg,
441 unsigned int *num_buffers, unsigned int *num_planes,
442 unsigned int sizes[], void *allocators[])
444 const struct v4l2_format *pfmt = parg;
445 const struct v4l2_pix_format *pix = NULL;
446 struct camif_vp *vp = vb2_get_drv_priv(vq);
447 struct camif_dev *camif = vp->camif;
448 struct camif_frame *frame = &vp->out_frame;
449 const struct camif_fmt *fmt;
453 pix = &pfmt->fmt.pix;
454 fmt = s3c_camif_find_format(vp, &pix->pixelformat, -1);
457 size = (pix->width * pix->height * fmt->depth) / 8;
462 size = (frame->f_width * frame->f_height * fmt->depth) / 8;
468 sizes[0] = max(size, pix->sizeimage);
471 allocators[0] = camif->alloc_ctx;
473 pr_debug("size: %u\n", sizes[0]);
477 static int buffer_prepare(struct vb2_buffer *vb)
479 struct camif_vp *vp = vb2_get_drv_priv(vb->vb2_queue);
481 if (vp->out_fmt == NULL)
484 if (vb2_plane_size(vb, 0) < vp->payload) {
485 v4l2_err(&vp->vdev, "buffer too small: %lu, required: %u\n",
486 vb2_plane_size(vb, 0), vp->payload);
489 vb2_set_plane_payload(vb, 0, vp->payload);
494 static void buffer_queue(struct vb2_buffer *vb)
496 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
497 struct camif_buffer *buf = container_of(vbuf, struct camif_buffer, vb);
498 struct camif_vp *vp = vb2_get_drv_priv(vb->vb2_queue);
499 struct camif_dev *camif = vp->camif;
502 spin_lock_irqsave(&camif->slock, flags);
503 WARN_ON(camif_prepare_addr(vp, &buf->vb.vb2_buf, &buf->paddr));
505 if (!(vp->state & ST_VP_STREAMING) && vp->active_buffers < 2) {
506 /* Schedule an empty buffer in H/W */
507 buf->index = vp->buf_index;
509 camif_hw_set_output_addr(vp, &buf->paddr, buf->index);
510 camif_hw_set_output_addr(vp, &buf->paddr, buf->index + 2);
512 camif_active_queue_add(vp, buf);
513 vp->buf_index = !vp->buf_index;
515 camif_pending_queue_add(vp, buf);
518 if (vb2_is_streaming(&vp->vb_queue) && !list_empty(&vp->pending_buf_q)
519 && !(vp->state & ST_VP_STREAMING)) {
521 vp->state |= ST_VP_STREAMING;
522 camif_hw_enable_scaler(vp, vp->scaler.enable);
523 camif_hw_enable_capture(vp);
524 spin_unlock_irqrestore(&camif->slock, flags);
526 if (!(vp->state & ST_VP_SENSOR_STREAMING)) {
527 if (sensor_set_streaming(camif, 1) == 0)
528 vp->state |= ST_VP_SENSOR_STREAMING;
530 v4l2_err(&vp->vdev, "Sensor s_stream failed\n");
533 camif_hw_dump_regs(camif, __func__);
537 spin_unlock_irqrestore(&camif->slock, flags);
540 static const struct vb2_ops s3c_camif_qops = {
541 .queue_setup = queue_setup,
542 .buf_prepare = buffer_prepare,
543 .buf_queue = buffer_queue,
544 .wait_prepare = vb2_ops_wait_prepare,
545 .wait_finish = vb2_ops_wait_finish,
546 .start_streaming = start_streaming,
547 .stop_streaming = stop_streaming,
550 static int s3c_camif_open(struct file *file)
552 struct camif_vp *vp = video_drvdata(file);
553 struct camif_dev *camif = vp->camif;
556 pr_debug("[vp%d] state: %#x, owner: %p, pid: %d\n", vp->id,
557 vp->state, vp->owner, task_pid_nr(current));
559 if (mutex_lock_interruptible(&camif->lock))
562 ret = v4l2_fh_open(file);
566 ret = pm_runtime_get_sync(camif->dev);
570 ret = sensor_set_power(camif, 1);
574 pm_runtime_put(camif->dev);
576 v4l2_fh_release(file);
578 mutex_unlock(&camif->lock);
582 static int s3c_camif_close(struct file *file)
584 struct camif_vp *vp = video_drvdata(file);
585 struct camif_dev *camif = vp->camif;
588 pr_debug("[vp%d] state: %#x, owner: %p, pid: %d\n", vp->id,
589 vp->state, vp->owner, task_pid_nr(current));
591 mutex_lock(&camif->lock);
593 if (vp->owner == file->private_data) {
594 camif_stop_capture(vp);
595 vb2_queue_release(&vp->vb_queue);
599 sensor_set_power(camif, 0);
601 pm_runtime_put(camif->dev);
602 ret = v4l2_fh_release(file);
604 mutex_unlock(&camif->lock);
608 static unsigned int s3c_camif_poll(struct file *file,
609 struct poll_table_struct *wait)
611 struct camif_vp *vp = video_drvdata(file);
612 struct camif_dev *camif = vp->camif;
615 mutex_lock(&camif->lock);
616 if (vp->owner && vp->owner != file->private_data)
619 ret = vb2_poll(&vp->vb_queue, file, wait);
621 mutex_unlock(&camif->lock);
625 static int s3c_camif_mmap(struct file *file, struct vm_area_struct *vma)
627 struct camif_vp *vp = video_drvdata(file);
630 if (vp->owner && vp->owner != file->private_data)
633 ret = vb2_mmap(&vp->vb_queue, vma);
638 static const struct v4l2_file_operations s3c_camif_fops = {
639 .owner = THIS_MODULE,
640 .open = s3c_camif_open,
641 .release = s3c_camif_close,
642 .poll = s3c_camif_poll,
643 .unlocked_ioctl = video_ioctl2,
644 .mmap = s3c_camif_mmap,
651 static int s3c_camif_vidioc_querycap(struct file *file, void *priv,
652 struct v4l2_capability *cap)
654 struct camif_vp *vp = video_drvdata(file);
656 strlcpy(cap->driver, S3C_CAMIF_DRIVER_NAME, sizeof(cap->driver));
657 strlcpy(cap->card, S3C_CAMIF_DRIVER_NAME, sizeof(cap->card));
658 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s.%d",
659 dev_name(vp->camif->dev), vp->id);
661 cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE;
662 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
667 static int s3c_camif_vidioc_enum_input(struct file *file, void *priv,
668 struct v4l2_input *input)
670 struct camif_vp *vp = video_drvdata(file);
671 struct v4l2_subdev *sensor = vp->camif->sensor.sd;
673 if (input->index || sensor == NULL)
676 input->type = V4L2_INPUT_TYPE_CAMERA;
677 strlcpy(input->name, sensor->name, sizeof(input->name));
681 static int s3c_camif_vidioc_s_input(struct file *file, void *priv,
684 return i == 0 ? 0 : -EINVAL;
687 static int s3c_camif_vidioc_g_input(struct file *file, void *priv,
694 static int s3c_camif_vidioc_enum_fmt(struct file *file, void *priv,
695 struct v4l2_fmtdesc *f)
697 struct camif_vp *vp = video_drvdata(file);
698 const struct camif_fmt *fmt;
700 fmt = s3c_camif_find_format(vp, NULL, f->index);
704 strlcpy(f->description, fmt->name, sizeof(f->description));
705 f->pixelformat = fmt->fourcc;
707 pr_debug("fmt(%d): %s\n", f->index, f->description);
711 static int s3c_camif_vidioc_g_fmt(struct file *file, void *priv,
712 struct v4l2_format *f)
714 struct camif_vp *vp = video_drvdata(file);
715 struct v4l2_pix_format *pix = &f->fmt.pix;
716 struct camif_frame *frame = &vp->out_frame;
717 const struct camif_fmt *fmt = vp->out_fmt;
719 pix->bytesperline = frame->f_width * fmt->ybpp;
720 pix->sizeimage = vp->payload;
722 pix->pixelformat = fmt->fourcc;
723 pix->width = frame->f_width;
724 pix->height = frame->f_height;
725 pix->field = V4L2_FIELD_NONE;
726 pix->colorspace = V4L2_COLORSPACE_JPEG;
731 static int __camif_video_try_format(struct camif_vp *vp,
732 struct v4l2_pix_format *pix,
733 const struct camif_fmt **ffmt)
735 struct camif_dev *camif = vp->camif;
736 struct v4l2_rect *crop = &camif->camif_crop;
737 unsigned int wmin, hmin, sc_hrmax, sc_vrmax;
738 const struct vp_pix_limits *pix_lim;
739 const struct camif_fmt *fmt;
741 fmt = s3c_camif_find_format(vp, &pix->pixelformat, 0);
743 if (WARN_ON(fmt == NULL))
749 pix_lim = &camif->variant->vp_pix_limits[vp->id];
751 pr_debug("fmt: %ux%u, crop: %ux%u, bytesperline: %u\n",
752 pix->width, pix->height, crop->width, crop->height,
755 * Calculate minimum width and height according to the configured
756 * camera input interface crop rectangle and the resizer's capabilities.
758 sc_hrmax = min(SCALER_MAX_RATIO, 1 << (ffs(crop->width) - 3));
759 sc_vrmax = min(SCALER_MAX_RATIO, 1 << (ffs(crop->height) - 1));
761 wmin = max_t(u32, pix_lim->min_out_width, crop->width / sc_hrmax);
762 wmin = round_up(wmin, pix_lim->out_width_align);
763 hmin = max_t(u32, 8, crop->height / sc_vrmax);
764 hmin = round_up(hmin, 8);
766 v4l_bound_align_image(&pix->width, wmin, pix_lim->max_sc_out_width,
767 ffs(pix_lim->out_width_align) - 1,
768 &pix->height, hmin, pix_lim->max_height, 0, 0);
770 pix->bytesperline = pix->width * fmt->ybpp;
771 pix->sizeimage = (pix->width * pix->height * fmt->depth) / 8;
772 pix->pixelformat = fmt->fourcc;
773 pix->colorspace = V4L2_COLORSPACE_JPEG;
774 pix->field = V4L2_FIELD_NONE;
776 pr_debug("%ux%u, wmin: %d, hmin: %d, sc_hrmax: %d, sc_vrmax: %d\n",
777 pix->width, pix->height, wmin, hmin, sc_hrmax, sc_vrmax);
782 static int s3c_camif_vidioc_try_fmt(struct file *file, void *priv,
783 struct v4l2_format *f)
785 struct camif_vp *vp = video_drvdata(file);
786 return __camif_video_try_format(vp, &f->fmt.pix, NULL);
789 static int s3c_camif_vidioc_s_fmt(struct file *file, void *priv,
790 struct v4l2_format *f)
792 struct v4l2_pix_format *pix = &f->fmt.pix;
793 struct camif_vp *vp = video_drvdata(file);
794 struct camif_frame *out_frame = &vp->out_frame;
795 const struct camif_fmt *fmt = NULL;
798 pr_debug("[vp%d]\n", vp->id);
800 if (vb2_is_busy(&vp->vb_queue))
803 ret = __camif_video_try_format(vp, &f->fmt.pix, &fmt);
808 vp->payload = pix->sizeimage;
809 out_frame->f_width = pix->width;
810 out_frame->f_height = pix->height;
812 /* Reset composition rectangle */
813 out_frame->rect.width = pix->width;
814 out_frame->rect.height = pix->height;
815 out_frame->rect.left = 0;
816 out_frame->rect.top = 0;
818 if (vp->owner == NULL)
821 pr_debug("%ux%u. payload: %u. fmt: %s. %d %d. sizeimage: %d. bpl: %d\n",
822 out_frame->f_width, out_frame->f_height, vp->payload, fmt->name,
823 pix->width * pix->height * fmt->depth, fmt->depth,
824 pix->sizeimage, pix->bytesperline);
829 /* Only check pixel formats at the sensor and the camif subdev pads */
830 static int camif_pipeline_validate(struct camif_dev *camif)
832 struct v4l2_subdev_format src_fmt;
833 struct media_pad *pad;
836 /* Retrieve format at the sensor subdev source pad */
837 pad = media_entity_remote_pad(&camif->pads[0]);
838 if (!pad || media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
841 src_fmt.pad = pad->index;
842 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
843 ret = v4l2_subdev_call(camif->sensor.sd, pad, get_fmt, NULL, &src_fmt);
844 if (ret < 0 && ret != -ENOIOCTLCMD)
847 if (src_fmt.format.width != camif->mbus_fmt.width ||
848 src_fmt.format.height != camif->mbus_fmt.height ||
849 src_fmt.format.code != camif->mbus_fmt.code)
855 static int s3c_camif_streamon(struct file *file, void *priv,
856 enum v4l2_buf_type type)
858 struct camif_vp *vp = video_drvdata(file);
859 struct camif_dev *camif = vp->camif;
860 struct media_entity *sensor = &camif->sensor.sd->entity;
863 pr_debug("[vp%d]\n", vp->id);
865 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
868 if (vp->owner && vp->owner != priv)
871 if (s3c_vp_active(vp))
874 ret = media_entity_pipeline_start(sensor, camif->m_pipeline);
878 ret = camif_pipeline_validate(camif);
880 media_entity_pipeline_stop(sensor);
884 return vb2_streamon(&vp->vb_queue, type);
887 static int s3c_camif_streamoff(struct file *file, void *priv,
888 enum v4l2_buf_type type)
890 struct camif_vp *vp = video_drvdata(file);
891 struct camif_dev *camif = vp->camif;
894 pr_debug("[vp%d]\n", vp->id);
896 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
899 if (vp->owner && vp->owner != priv)
902 ret = vb2_streamoff(&vp->vb_queue, type);
904 media_entity_pipeline_stop(&camif->sensor.sd->entity);
908 static int s3c_camif_reqbufs(struct file *file, void *priv,
909 struct v4l2_requestbuffers *rb)
911 struct camif_vp *vp = video_drvdata(file);
914 pr_debug("[vp%d] rb count: %d, owner: %p, priv: %p\n",
915 vp->id, rb->count, vp->owner, priv);
917 if (vp->owner && vp->owner != priv)
921 rb->count = max_t(u32, CAMIF_REQ_BUFS_MIN, rb->count);
925 ret = vb2_reqbufs(&vp->vb_queue, rb);
929 if (rb->count && rb->count < CAMIF_REQ_BUFS_MIN) {
931 vb2_reqbufs(&vp->vb_queue, rb);
935 vp->reqbufs_count = rb->count;
936 if (vp->owner == NULL && rb->count > 0)
942 static int s3c_camif_querybuf(struct file *file, void *priv,
943 struct v4l2_buffer *buf)
945 struct camif_vp *vp = video_drvdata(file);
946 return vb2_querybuf(&vp->vb_queue, buf);
949 static int s3c_camif_qbuf(struct file *file, void *priv,
950 struct v4l2_buffer *buf)
952 struct camif_vp *vp = video_drvdata(file);
954 pr_debug("[vp%d]\n", vp->id);
956 if (vp->owner && vp->owner != priv)
959 return vb2_qbuf(&vp->vb_queue, buf);
962 static int s3c_camif_dqbuf(struct file *file, void *priv,
963 struct v4l2_buffer *buf)
965 struct camif_vp *vp = video_drvdata(file);
967 pr_debug("[vp%d] sequence: %d\n", vp->id, vp->frame_sequence);
969 if (vp->owner && vp->owner != priv)
972 return vb2_dqbuf(&vp->vb_queue, buf, file->f_flags & O_NONBLOCK);
975 static int s3c_camif_create_bufs(struct file *file, void *priv,
976 struct v4l2_create_buffers *create)
978 struct camif_vp *vp = video_drvdata(file);
981 if (vp->owner && vp->owner != priv)
984 create->count = max_t(u32, 1, create->count);
985 ret = vb2_create_bufs(&vp->vb_queue, create);
987 if (!ret && vp->owner == NULL)
993 static int s3c_camif_prepare_buf(struct file *file, void *priv,
994 struct v4l2_buffer *b)
996 struct camif_vp *vp = video_drvdata(file);
997 return vb2_prepare_buf(&vp->vb_queue, b);
1000 static int s3c_camif_g_selection(struct file *file, void *priv,
1001 struct v4l2_selection *sel)
1003 struct camif_vp *vp = video_drvdata(file);
1005 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1008 switch (sel->target) {
1009 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1010 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1013 sel->r.width = vp->out_frame.f_width;
1014 sel->r.height = vp->out_frame.f_height;
1017 case V4L2_SEL_TGT_COMPOSE:
1018 sel->r = vp->out_frame.rect;
1025 static void __camif_try_compose(struct camif_dev *camif, struct camif_vp *vp,
1026 struct v4l2_rect *r)
1028 /* s3c244x doesn't support composition */
1029 if (camif->variant->ip_revision == S3C244X_CAMIF_IP_REV) {
1030 *r = vp->out_frame.rect;
1037 static int s3c_camif_s_selection(struct file *file, void *priv,
1038 struct v4l2_selection *sel)
1040 struct camif_vp *vp = video_drvdata(file);
1041 struct camif_dev *camif = vp->camif;
1042 struct v4l2_rect rect = sel->r;
1043 unsigned long flags;
1045 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1046 sel->target != V4L2_SEL_TGT_COMPOSE)
1049 __camif_try_compose(camif, vp, &rect);
1052 spin_lock_irqsave(&camif->slock, flags);
1053 vp->out_frame.rect = rect;
1054 vp->state |= ST_VP_CONFIG;
1055 spin_unlock_irqrestore(&camif->slock, flags);
1057 pr_debug("type: %#x, target: %#x, flags: %#x, (%d,%d)/%dx%d\n",
1058 sel->type, sel->target, sel->flags,
1059 sel->r.left, sel->r.top, sel->r.width, sel->r.height);
1064 static const struct v4l2_ioctl_ops s3c_camif_ioctl_ops = {
1065 .vidioc_querycap = s3c_camif_vidioc_querycap,
1066 .vidioc_enum_input = s3c_camif_vidioc_enum_input,
1067 .vidioc_g_input = s3c_camif_vidioc_g_input,
1068 .vidioc_s_input = s3c_camif_vidioc_s_input,
1069 .vidioc_enum_fmt_vid_cap = s3c_camif_vidioc_enum_fmt,
1070 .vidioc_try_fmt_vid_cap = s3c_camif_vidioc_try_fmt,
1071 .vidioc_s_fmt_vid_cap = s3c_camif_vidioc_s_fmt,
1072 .vidioc_g_fmt_vid_cap = s3c_camif_vidioc_g_fmt,
1073 .vidioc_g_selection = s3c_camif_g_selection,
1074 .vidioc_s_selection = s3c_camif_s_selection,
1075 .vidioc_reqbufs = s3c_camif_reqbufs,
1076 .vidioc_querybuf = s3c_camif_querybuf,
1077 .vidioc_prepare_buf = s3c_camif_prepare_buf,
1078 .vidioc_create_bufs = s3c_camif_create_bufs,
1079 .vidioc_qbuf = s3c_camif_qbuf,
1080 .vidioc_dqbuf = s3c_camif_dqbuf,
1081 .vidioc_streamon = s3c_camif_streamon,
1082 .vidioc_streamoff = s3c_camif_streamoff,
1083 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1084 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1085 .vidioc_log_status = v4l2_ctrl_log_status,
1089 * Video node controls
1091 static int s3c_camif_video_s_ctrl(struct v4l2_ctrl *ctrl)
1093 struct camif_vp *vp = ctrl->priv;
1094 struct camif_dev *camif = vp->camif;
1095 unsigned long flags;
1097 pr_debug("[vp%d] ctrl: %s, value: %d\n", vp->id,
1098 ctrl->name, ctrl->val);
1100 spin_lock_irqsave(&camif->slock, flags);
1103 case V4L2_CID_HFLIP:
1104 vp->hflip = ctrl->val;
1107 case V4L2_CID_VFLIP:
1108 vp->vflip = ctrl->val;
1112 vp->state |= ST_VP_CONFIG;
1113 spin_unlock_irqrestore(&camif->slock, flags);
1117 /* Codec and preview video node control ops */
1118 static const struct v4l2_ctrl_ops s3c_camif_video_ctrl_ops = {
1119 .s_ctrl = s3c_camif_video_s_ctrl,
1122 int s3c_camif_register_video_node(struct camif_dev *camif, int idx)
1124 struct camif_vp *vp = &camif->vp[idx];
1125 struct vb2_queue *q = &vp->vb_queue;
1126 struct video_device *vfd = &vp->vdev;
1127 struct v4l2_ctrl *ctrl;
1130 memset(vfd, 0, sizeof(*vfd));
1131 snprintf(vfd->name, sizeof(vfd->name), "camif-%s",
1132 vp->id == 0 ? "codec" : "preview");
1134 vfd->fops = &s3c_camif_fops;
1135 vfd->ioctl_ops = &s3c_camif_ioctl_ops;
1136 vfd->v4l2_dev = &camif->v4l2_dev;
1138 vfd->release = video_device_release_empty;
1139 vfd->lock = &camif->lock;
1140 vp->reqbufs_count = 0;
1142 INIT_LIST_HEAD(&vp->pending_buf_q);
1143 INIT_LIST_HEAD(&vp->active_buf_q);
1145 memset(q, 0, sizeof(*q));
1146 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1147 q->io_modes = VB2_MMAP | VB2_USERPTR;
1148 q->ops = &s3c_camif_qops;
1149 q->mem_ops = &vb2_dma_contig_memops;
1150 q->buf_struct_size = sizeof(struct camif_buffer);
1152 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1153 q->lock = &vp->camif->lock;
1155 ret = vb2_queue_init(q);
1159 vp->pad.flags = MEDIA_PAD_FL_SINK;
1160 ret = media_entity_init(&vfd->entity, 1, &vp->pad, 0);
1164 video_set_drvdata(vfd, vp);
1166 v4l2_ctrl_handler_init(&vp->ctrl_handler, 1);
1167 ctrl = v4l2_ctrl_new_std(&vp->ctrl_handler, &s3c_camif_video_ctrl_ops,
1168 V4L2_CID_HFLIP, 0, 1, 1, 0);
1171 ctrl = v4l2_ctrl_new_std(&vp->ctrl_handler, &s3c_camif_video_ctrl_ops,
1172 V4L2_CID_VFLIP, 0, 1, 1, 0);
1176 ret = vp->ctrl_handler.error;
1178 goto err_me_cleanup;
1180 vfd->ctrl_handler = &vp->ctrl_handler;
1182 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1184 goto err_ctrlh_free;
1186 v4l2_info(&camif->v4l2_dev, "registered %s as /dev/%s\n",
1187 vfd->name, video_device_node_name(vfd));
1191 v4l2_ctrl_handler_free(&vp->ctrl_handler);
1193 media_entity_cleanup(&vfd->entity);
1195 video_device_release(vfd);
1199 void s3c_camif_unregister_video_node(struct camif_dev *camif, int idx)
1201 struct video_device *vfd = &camif->vp[idx].vdev;
1203 if (video_is_registered(vfd)) {
1204 video_unregister_device(vfd);
1205 media_entity_cleanup(&vfd->entity);
1206 v4l2_ctrl_handler_free(vfd->ctrl_handler);
1210 /* Media bus pixel formats supported at the camif input */
1211 static const u32 camif_mbus_formats[] = {
1212 MEDIA_BUS_FMT_YUYV8_2X8,
1213 MEDIA_BUS_FMT_YVYU8_2X8,
1214 MEDIA_BUS_FMT_UYVY8_2X8,
1215 MEDIA_BUS_FMT_VYUY8_2X8,
1219 * Camera input interface subdev operations
1222 static int s3c_camif_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1223 struct v4l2_subdev_pad_config *cfg,
1224 struct v4l2_subdev_mbus_code_enum *code)
1226 if (code->index >= ARRAY_SIZE(camif_mbus_formats))
1229 code->code = camif_mbus_formats[code->index];
1233 static int s3c_camif_subdev_get_fmt(struct v4l2_subdev *sd,
1234 struct v4l2_subdev_pad_config *cfg,
1235 struct v4l2_subdev_format *fmt)
1237 struct camif_dev *camif = v4l2_get_subdevdata(sd);
1238 struct v4l2_mbus_framefmt *mf = &fmt->format;
1240 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1241 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1246 mutex_lock(&camif->lock);
1249 case CAMIF_SD_PAD_SINK:
1250 /* full camera input pixel size */
1251 *mf = camif->mbus_fmt;
1254 case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
1255 /* crop rectangle at camera interface input */
1256 mf->width = camif->camif_crop.width;
1257 mf->height = camif->camif_crop.height;
1258 mf->code = camif->mbus_fmt.code;
1262 mutex_unlock(&camif->lock);
1263 mf->field = V4L2_FIELD_NONE;
1264 mf->colorspace = V4L2_COLORSPACE_JPEG;
1268 static void __camif_subdev_try_format(struct camif_dev *camif,
1269 struct v4l2_mbus_framefmt *mf, int pad)
1271 const struct s3c_camif_variant *variant = camif->variant;
1272 const struct vp_pix_limits *pix_lim;
1275 /* FIXME: constraints against codec or preview path ? */
1276 pix_lim = &variant->vp_pix_limits[VP_CODEC];
1278 for (i = 0; i < ARRAY_SIZE(camif_mbus_formats); i++)
1279 if (camif_mbus_formats[i] == mf->code)
1282 if (i == ARRAY_SIZE(camif_mbus_formats))
1283 mf->code = camif_mbus_formats[0];
1285 if (pad == CAMIF_SD_PAD_SINK) {
1286 v4l_bound_align_image(&mf->width, 8, CAMIF_MAX_PIX_WIDTH,
1287 ffs(pix_lim->out_width_align) - 1,
1288 &mf->height, 8, CAMIF_MAX_PIX_HEIGHT, 0,
1291 struct v4l2_rect *crop = &camif->camif_crop;
1292 v4l_bound_align_image(&mf->width, 8, crop->width,
1293 ffs(pix_lim->out_width_align) - 1,
1294 &mf->height, 8, crop->height,
1298 v4l2_dbg(1, debug, &camif->subdev, "%ux%u\n", mf->width, mf->height);
1301 static int s3c_camif_subdev_set_fmt(struct v4l2_subdev *sd,
1302 struct v4l2_subdev_pad_config *cfg,
1303 struct v4l2_subdev_format *fmt)
1305 struct camif_dev *camif = v4l2_get_subdevdata(sd);
1306 struct v4l2_mbus_framefmt *mf = &fmt->format;
1307 struct v4l2_rect *crop = &camif->camif_crop;
1310 v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %ux%u\n",
1311 fmt->pad, mf->code, mf->width, mf->height);
1313 mf->field = V4L2_FIELD_NONE;
1314 mf->colorspace = V4L2_COLORSPACE_JPEG;
1315 mutex_lock(&camif->lock);
1318 * No pixel format change at the camera input is allowed
1321 if (vb2_is_busy(&camif->vp[VP_CODEC].vb_queue) ||
1322 vb2_is_busy(&camif->vp[VP_PREVIEW].vb_queue)) {
1323 mutex_unlock(&camif->lock);
1327 __camif_subdev_try_format(camif, mf, fmt->pad);
1329 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1330 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1332 mutex_unlock(&camif->lock);
1337 case CAMIF_SD_PAD_SINK:
1338 camif->mbus_fmt = *mf;
1339 /* Reset sink crop rectangle. */
1340 crop->width = mf->width;
1341 crop->height = mf->height;
1345 * Reset source format (the camif's crop rectangle)
1346 * and the video output resolution.
1348 for (i = 0; i < CAMIF_VP_NUM; i++) {
1349 struct camif_frame *frame = &camif->vp[i].out_frame;
1350 frame->rect = *crop;
1351 frame->f_width = mf->width;
1352 frame->f_height = mf->height;
1356 case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
1357 /* Pixel format can be only changed on the sink pad. */
1358 mf->code = camif->mbus_fmt.code;
1359 mf->width = crop->width;
1360 mf->height = crop->height;
1364 mutex_unlock(&camif->lock);
1368 static int s3c_camif_subdev_get_selection(struct v4l2_subdev *sd,
1369 struct v4l2_subdev_pad_config *cfg,
1370 struct v4l2_subdev_selection *sel)
1372 struct camif_dev *camif = v4l2_get_subdevdata(sd);
1373 struct v4l2_rect *crop = &camif->camif_crop;
1374 struct v4l2_mbus_framefmt *mf = &camif->mbus_fmt;
1376 if ((sel->target != V4L2_SEL_TGT_CROP &&
1377 sel->target != V4L2_SEL_TGT_CROP_BOUNDS) ||
1378 sel->pad != CAMIF_SD_PAD_SINK)
1381 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1382 sel->r = *v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1386 mutex_lock(&camif->lock);
1388 if (sel->target == V4L2_SEL_TGT_CROP) {
1390 } else { /* crop bounds */
1391 sel->r.width = mf->width;
1392 sel->r.height = mf->height;
1397 mutex_unlock(&camif->lock);
1399 v4l2_dbg(1, debug, sd, "%s: crop: (%d,%d) %dx%d, size: %ux%u\n",
1400 __func__, crop->left, crop->top, crop->width,
1401 crop->height, mf->width, mf->height);
1406 static void __camif_try_crop(struct camif_dev *camif, struct v4l2_rect *r)
1408 struct v4l2_mbus_framefmt *mf = &camif->mbus_fmt;
1409 const struct camif_pix_limits *pix_lim = &camif->variant->pix_limits;
1410 unsigned int left = 2 * r->left;
1411 unsigned int top = 2 * r->top;
1414 * Following constraints must be met:
1415 * - r->width + 2 * r->left = mf->width;
1416 * - r->height + 2 * r->top = mf->height;
1417 * - crop rectangle size and position must be aligned
1418 * to 8 or 2 pixels, depending on SoC version.
1420 v4l_bound_align_image(&r->width, 0, mf->width,
1421 ffs(pix_lim->win_hor_offset_align) - 1,
1422 &r->height, 0, mf->height, 1, 0);
1424 v4l_bound_align_image(&left, 0, mf->width - r->width,
1425 ffs(pix_lim->win_hor_offset_align),
1426 &top, 0, mf->height - r->height, 2, 0);
1430 r->width = mf->width - left;
1431 r->height = mf->height - top;
1433 * Make sure we either downscale or upscale both the pixel
1434 * width and height. Just return current crop rectangle if
1435 * this scaler constraint is not met.
1437 if (camif->variant->ip_revision == S3C244X_CAMIF_IP_REV &&
1438 camif_is_streaming(camif)) {
1441 for (i = 0; i < CAMIF_VP_NUM; i++) {
1442 struct v4l2_rect *or = &camif->vp[i].out_frame.rect;
1443 if ((or->width > r->width) == (or->height > r->height))
1445 *r = camif->camif_crop;
1446 pr_debug("Width/height scaling direction limitation\n");
1451 v4l2_dbg(1, debug, &camif->v4l2_dev, "crop: (%d,%d)/%dx%d, fmt: %ux%u\n",
1452 r->left, r->top, r->width, r->height, mf->width, mf->height);
1455 static int s3c_camif_subdev_set_selection(struct v4l2_subdev *sd,
1456 struct v4l2_subdev_pad_config *cfg,
1457 struct v4l2_subdev_selection *sel)
1459 struct camif_dev *camif = v4l2_get_subdevdata(sd);
1460 struct v4l2_rect *crop = &camif->camif_crop;
1461 struct camif_scaler scaler;
1463 if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != CAMIF_SD_PAD_SINK)
1466 mutex_lock(&camif->lock);
1467 __camif_try_crop(camif, &sel->r);
1469 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1470 *v4l2_subdev_get_try_crop(sd, cfg, sel->pad) = sel->r;
1472 unsigned long flags;
1475 spin_lock_irqsave(&camif->slock, flags);
1478 for (i = 0; i < CAMIF_VP_NUM; i++) {
1479 struct camif_vp *vp = &camif->vp[i];
1480 scaler = vp->scaler;
1481 if (s3c_camif_get_scaler_config(vp, &scaler))
1483 vp->scaler = scaler;
1484 vp->state |= ST_VP_CONFIG;
1487 spin_unlock_irqrestore(&camif->slock, flags);
1489 mutex_unlock(&camif->lock);
1491 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %u, f_h: %u\n",
1492 __func__, crop->left, crop->top, crop->width, crop->height,
1493 camif->mbus_fmt.width, camif->mbus_fmt.height);
1498 static const struct v4l2_subdev_pad_ops s3c_camif_subdev_pad_ops = {
1499 .enum_mbus_code = s3c_camif_subdev_enum_mbus_code,
1500 .get_selection = s3c_camif_subdev_get_selection,
1501 .set_selection = s3c_camif_subdev_set_selection,
1502 .get_fmt = s3c_camif_subdev_get_fmt,
1503 .set_fmt = s3c_camif_subdev_set_fmt,
1506 static struct v4l2_subdev_ops s3c_camif_subdev_ops = {
1507 .pad = &s3c_camif_subdev_pad_ops,
1510 static int s3c_camif_subdev_s_ctrl(struct v4l2_ctrl *ctrl)
1512 struct camif_dev *camif = container_of(ctrl->handler, struct camif_dev,
1514 unsigned long flags;
1516 spin_lock_irqsave(&camif->slock, flags);
1519 case V4L2_CID_COLORFX:
1520 camif->colorfx = camif->ctrl_colorfx->val;
1522 switch (ctrl->val) {
1523 case V4L2_COLORFX_SEPIA:
1524 camif->colorfx_cb = 115;
1525 camif->colorfx_cr = 145;
1527 case V4L2_COLORFX_SET_CBCR:
1528 camif->colorfx_cb = camif->ctrl_colorfx_cbcr->val >> 8;
1529 camif->colorfx_cr = camif->ctrl_colorfx_cbcr->val & 0xff;
1532 /* for V4L2_COLORFX_BW and others */
1533 camif->colorfx_cb = 128;
1534 camif->colorfx_cr = 128;
1537 case V4L2_CID_TEST_PATTERN:
1538 camif->test_pattern = camif->ctrl_test_pattern->val;
1544 camif->vp[VP_CODEC].state |= ST_VP_CONFIG;
1545 camif->vp[VP_PREVIEW].state |= ST_VP_CONFIG;
1546 spin_unlock_irqrestore(&camif->slock, flags);
1551 static const struct v4l2_ctrl_ops s3c_camif_subdev_ctrl_ops = {
1552 .s_ctrl = s3c_camif_subdev_s_ctrl,
1555 static const char * const s3c_camif_test_pattern_menu[] = {
1558 "Horizontal increment",
1559 "Vertical increment",
1562 int s3c_camif_create_subdev(struct camif_dev *camif)
1564 struct v4l2_ctrl_handler *handler = &camif->ctrl_handler;
1565 struct v4l2_subdev *sd = &camif->subdev;
1568 v4l2_subdev_init(sd, &s3c_camif_subdev_ops);
1569 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1570 strlcpy(sd->name, "S3C-CAMIF", sizeof(sd->name));
1572 camif->pads[CAMIF_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1573 camif->pads[CAMIF_SD_PAD_SOURCE_C].flags = MEDIA_PAD_FL_SOURCE;
1574 camif->pads[CAMIF_SD_PAD_SOURCE_P].flags = MEDIA_PAD_FL_SOURCE;
1576 ret = media_entity_init(&sd->entity, CAMIF_SD_PADS_NUM,
1581 v4l2_ctrl_handler_init(handler, 3);
1582 camif->ctrl_test_pattern = v4l2_ctrl_new_std_menu_items(handler,
1583 &s3c_camif_subdev_ctrl_ops, V4L2_CID_TEST_PATTERN,
1584 ARRAY_SIZE(s3c_camif_test_pattern_menu) - 1, 0, 0,
1585 s3c_camif_test_pattern_menu);
1587 if (camif->variant->has_img_effect) {
1588 camif->ctrl_colorfx = v4l2_ctrl_new_std_menu(handler,
1589 &s3c_camif_subdev_ctrl_ops,
1590 V4L2_CID_COLORFX, V4L2_COLORFX_SET_CBCR,
1591 ~0x981f, V4L2_COLORFX_NONE);
1593 camif->ctrl_colorfx_cbcr = v4l2_ctrl_new_std(handler,
1594 &s3c_camif_subdev_ctrl_ops,
1595 V4L2_CID_COLORFX_CBCR, 0, 0xffff, 1, 0);
1598 if (handler->error) {
1599 v4l2_ctrl_handler_free(handler);
1600 media_entity_cleanup(&sd->entity);
1601 return handler->error;
1604 if (camif->variant->has_img_effect)
1605 v4l2_ctrl_auto_cluster(2, &camif->ctrl_colorfx,
1606 V4L2_COLORFX_SET_CBCR, false);
1608 sd->ctrl_handler = handler;
1609 v4l2_set_subdevdata(sd, camif);
1614 void s3c_camif_unregister_subdev(struct camif_dev *camif)
1616 struct v4l2_subdev *sd = &camif->subdev;
1618 /* Return if not registered */
1619 if (v4l2_get_subdevdata(sd) == NULL)
1622 v4l2_device_unregister_subdev(sd);
1623 media_entity_cleanup(&sd->entity);
1624 v4l2_ctrl_handler_free(&camif->ctrl_handler);
1625 v4l2_set_subdevdata(sd, NULL);
1628 int s3c_camif_set_defaults(struct camif_dev *camif)
1630 unsigned int ip_rev = camif->variant->ip_revision;
1633 for (i = 0; i < CAMIF_VP_NUM; i++) {
1634 struct camif_vp *vp = &camif->vp[i];
1635 struct camif_frame *f = &vp->out_frame;
1639 vp->offset = camif->variant->vp_offset;
1641 if (ip_rev == S3C244X_CAMIF_IP_REV)
1642 vp->fmt_flags = i ? FMT_FL_S3C24XX_PREVIEW :
1643 FMT_FL_S3C24XX_CODEC;
1645 vp->fmt_flags = FMT_FL_S3C64XX;
1647 vp->out_fmt = s3c_camif_find_format(vp, NULL, 0);
1648 BUG_ON(vp->out_fmt == NULL);
1650 memset(f, 0, sizeof(*f));
1651 f->f_width = CAMIF_DEF_WIDTH;
1652 f->f_height = CAMIF_DEF_HEIGHT;
1653 f->rect.width = CAMIF_DEF_WIDTH;
1654 f->rect.height = CAMIF_DEF_HEIGHT;
1656 /* Scaler is always enabled */
1657 vp->scaler.enable = 1;
1659 vp->payload = (f->f_width * f->f_height *
1660 vp->out_fmt->depth) / 8;
1663 memset(&camif->mbus_fmt, 0, sizeof(camif->mbus_fmt));
1664 camif->mbus_fmt.width = CAMIF_DEF_WIDTH;
1665 camif->mbus_fmt.height = CAMIF_DEF_HEIGHT;
1666 camif->mbus_fmt.code = camif_mbus_formats[0];
1668 memset(&camif->camif_crop, 0, sizeof(camif->camif_crop));
1669 camif->camif_crop.width = CAMIF_DEF_WIDTH;
1670 camif->camif_crop.height = CAMIF_DEF_HEIGHT;