1 // SPDX-License-Identifier: GPL-2.0-only
3 * Samsung EXYNOS FIMC-LITE (camera host interface) driver
5 * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
6 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
10 #include <linux/bug.h>
11 #include <linux/clk.h>
12 #include <linux/device.h>
13 #include <linux/errno.h>
14 #include <linux/interrupt.h>
15 #include <linux/kernel.h>
16 #include <linux/list.h>
17 #include <linux/module.h>
19 #include <linux/types.h>
20 #include <linux/platform_device.h>
21 #include <linux/pm_runtime.h>
22 #include <linux/slab.h>
23 #include <linux/videodev2.h>
25 #include <media/v4l2-device.h>
26 #include <media/v4l2-ioctl.h>
27 #include <media/v4l2-mem2mem.h>
28 #include <media/v4l2-rect.h>
29 #include <media/videobuf2-v4l2.h>
30 #include <media/videobuf2-dma-contig.h>
31 #include <media/drv-intf/exynos-fimc.h>
34 #include "fimc-core.h"
35 #include "fimc-lite.h"
36 #include "fimc-lite-reg.h"
39 module_param(debug, int, 0644);
41 static const struct fimc_fmt fimc_lite_formats[] = {
43 .fourcc = V4L2_PIX_FMT_YUYV,
44 .colorspace = V4L2_COLORSPACE_JPEG,
46 .color = FIMC_FMT_YCBYCR422,
48 .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
49 .flags = FMT_FLAGS_YUV,
51 .fourcc = V4L2_PIX_FMT_UYVY,
52 .colorspace = V4L2_COLORSPACE_JPEG,
54 .color = FIMC_FMT_CBYCRY422,
56 .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
57 .flags = FMT_FLAGS_YUV,
59 .fourcc = V4L2_PIX_FMT_VYUY,
60 .colorspace = V4L2_COLORSPACE_JPEG,
62 .color = FIMC_FMT_CRYCBY422,
64 .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
65 .flags = FMT_FLAGS_YUV,
67 .fourcc = V4L2_PIX_FMT_YVYU,
68 .colorspace = V4L2_COLORSPACE_JPEG,
70 .color = FIMC_FMT_YCRYCB422,
72 .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
73 .flags = FMT_FLAGS_YUV,
75 .fourcc = V4L2_PIX_FMT_SGRBG8,
76 .colorspace = V4L2_COLORSPACE_SRGB,
78 .color = FIMC_FMT_RAW8,
80 .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8,
81 .flags = FMT_FLAGS_RAW_BAYER,
83 .fourcc = V4L2_PIX_FMT_SGRBG10,
84 .colorspace = V4L2_COLORSPACE_SRGB,
86 .color = FIMC_FMT_RAW10,
88 .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10,
89 .flags = FMT_FLAGS_RAW_BAYER,
91 .fourcc = V4L2_PIX_FMT_SGRBG12,
92 .colorspace = V4L2_COLORSPACE_SRGB,
94 .color = FIMC_FMT_RAW12,
96 .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12,
97 .flags = FMT_FLAGS_RAW_BAYER,
102 * fimc_lite_find_format - lookup fimc color format by fourcc or media bus code
103 * @pixelformat: fourcc to match, ignored if null
104 * @mbus_code: media bus code to match, ignored if null
105 * @mask: the color format flags to match
106 * @index: index to the fimc_lite_formats array, ignored if negative
108 static const struct fimc_fmt *fimc_lite_find_format(const u32 *pixelformat,
109 const u32 *mbus_code, unsigned int mask, int index)
111 const struct fimc_fmt *fmt, *def_fmt = NULL;
115 if (index >= (int)ARRAY_SIZE(fimc_lite_formats))
118 for (i = 0; i < ARRAY_SIZE(fimc_lite_formats); ++i) {
119 fmt = &fimc_lite_formats[i];
120 if (mask && !(fmt->flags & mask))
122 if (pixelformat && fmt->fourcc == *pixelformat)
124 if (mbus_code && fmt->mbus_code == *mbus_code)
133 static int fimc_lite_hw_init(struct fimc_lite *fimc, bool isp_output)
135 struct fimc_source_info *si;
138 if (fimc->sensor == NULL)
141 if (fimc->inp_frame.fmt == NULL || fimc->out_frame.fmt == NULL)
144 /* Get sensor configuration data from the sensor subdev */
145 si = v4l2_get_subdev_hostdata(fimc->sensor);
149 spin_lock_irqsave(&fimc->slock, flags);
151 flite_hw_set_camera_bus(fimc, si);
152 flite_hw_set_source_format(fimc, &fimc->inp_frame);
153 flite_hw_set_window_offset(fimc, &fimc->inp_frame);
154 flite_hw_set_dma_buf_mask(fimc, 0);
155 flite_hw_set_output_dma(fimc, &fimc->out_frame, !isp_output);
156 flite_hw_set_interrupt_mask(fimc);
157 flite_hw_set_test_pattern(fimc, fimc->test_pattern->val);
160 flite_hw_dump_regs(fimc, __func__);
162 spin_unlock_irqrestore(&fimc->slock, flags);
167 * Reinitialize the driver so it is ready to start the streaming again.
168 * Set fimc->state to indicate stream off and the hardware shut down state.
169 * If not suspending (@suspend is false), return any buffers to videobuf2.
170 * Otherwise put any owned buffers onto the pending buffers queue, so they
171 * can be re-spun when the device is being resumed. Also perform FIMC
172 * software reset and disable streaming on the whole pipeline if required.
174 static int fimc_lite_reinit(struct fimc_lite *fimc, bool suspend)
176 struct flite_buffer *buf;
180 spin_lock_irqsave(&fimc->slock, flags);
181 streaming = fimc->state & (1 << ST_SENSOR_STREAM);
183 fimc->state &= ~(1 << ST_FLITE_RUN | 1 << ST_FLITE_OFF |
184 1 << ST_FLITE_STREAM | 1 << ST_SENSOR_STREAM);
186 fimc->state |= (1 << ST_FLITE_SUSPENDED);
188 fimc->state &= ~(1 << ST_FLITE_PENDING |
189 1 << ST_FLITE_SUSPENDED);
191 /* Release unused buffers */
192 while (!suspend && !list_empty(&fimc->pending_buf_q)) {
193 buf = fimc_lite_pending_queue_pop(fimc);
194 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
196 /* If suspending put unused buffers onto pending queue */
197 while (!list_empty(&fimc->active_buf_q)) {
198 buf = fimc_lite_active_queue_pop(fimc);
200 fimc_lite_pending_queue_add(fimc, buf);
202 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
205 spin_unlock_irqrestore(&fimc->slock, flags);
207 flite_hw_reset(fimc);
212 return fimc_pipeline_call(&fimc->ve, set_stream, 0);
215 static int fimc_lite_stop_capture(struct fimc_lite *fimc, bool suspend)
219 if (!fimc_lite_active(fimc))
222 spin_lock_irqsave(&fimc->slock, flags);
223 set_bit(ST_FLITE_OFF, &fimc->state);
224 flite_hw_capture_stop(fimc);
225 spin_unlock_irqrestore(&fimc->slock, flags);
227 wait_event_timeout(fimc->irq_queue,
228 !test_bit(ST_FLITE_OFF, &fimc->state),
229 (2*HZ/10)); /* 200 ms */
231 return fimc_lite_reinit(fimc, suspend);
234 /* Must be called with fimc.slock spinlock held. */
235 static void fimc_lite_config_update(struct fimc_lite *fimc)
237 flite_hw_set_window_offset(fimc, &fimc->inp_frame);
238 flite_hw_set_dma_window(fimc, &fimc->out_frame);
239 flite_hw_set_test_pattern(fimc, fimc->test_pattern->val);
240 clear_bit(ST_FLITE_CONFIG, &fimc->state);
243 static irqreturn_t flite_irq_handler(int irq, void *priv)
245 struct fimc_lite *fimc = priv;
246 struct flite_buffer *vbuf;
250 spin_lock_irqsave(&fimc->slock, flags);
252 intsrc = flite_hw_get_interrupt_source(fimc);
253 flite_hw_clear_pending_irq(fimc);
255 if (test_and_clear_bit(ST_FLITE_OFF, &fimc->state)) {
256 wake_up(&fimc->irq_queue);
260 if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_OVERFLOW) {
261 clear_bit(ST_FLITE_RUN, &fimc->state);
262 fimc->events.data_overflow++;
265 if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_LASTCAPEND) {
266 flite_hw_clear_last_capture_end(fimc);
267 clear_bit(ST_FLITE_STREAM, &fimc->state);
268 wake_up(&fimc->irq_queue);
271 if (atomic_read(&fimc->out_path) != FIMC_IO_DMA)
274 if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMSTART) &&
275 test_bit(ST_FLITE_RUN, &fimc->state) &&
276 !list_empty(&fimc->pending_buf_q)) {
277 vbuf = fimc_lite_pending_queue_pop(fimc);
278 flite_hw_set_dma_buffer(fimc, vbuf);
279 fimc_lite_active_queue_add(fimc, vbuf);
282 if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMEND) &&
283 test_bit(ST_FLITE_RUN, &fimc->state) &&
284 !list_empty(&fimc->active_buf_q)) {
285 vbuf = fimc_lite_active_queue_pop(fimc);
286 vbuf->vb.vb2_buf.timestamp = ktime_get_ns();
287 vbuf->vb.sequence = fimc->frame_count++;
288 flite_hw_mask_dma_buffer(fimc, vbuf->index);
289 vb2_buffer_done(&vbuf->vb.vb2_buf, VB2_BUF_STATE_DONE);
292 if (test_bit(ST_FLITE_CONFIG, &fimc->state))
293 fimc_lite_config_update(fimc);
295 if (list_empty(&fimc->pending_buf_q)) {
296 flite_hw_capture_stop(fimc);
297 clear_bit(ST_FLITE_STREAM, &fimc->state);
300 set_bit(ST_FLITE_RUN, &fimc->state);
301 spin_unlock_irqrestore(&fimc->slock, flags);
305 static int start_streaming(struct vb2_queue *q, unsigned int count)
307 struct fimc_lite *fimc = q->drv_priv;
311 spin_lock_irqsave(&fimc->slock, flags);
314 fimc->frame_count = 0;
316 spin_unlock_irqrestore(&fimc->slock, flags);
318 ret = fimc_lite_hw_init(fimc, false);
320 fimc_lite_reinit(fimc, false);
324 set_bit(ST_FLITE_PENDING, &fimc->state);
326 if (!list_empty(&fimc->active_buf_q) &&
327 !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
328 flite_hw_capture_start(fimc);
330 if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
331 fimc_pipeline_call(&fimc->ve, set_stream, 1);
334 flite_hw_dump_regs(fimc, __func__);
339 static void stop_streaming(struct vb2_queue *q)
341 struct fimc_lite *fimc = q->drv_priv;
343 if (!fimc_lite_active(fimc))
346 fimc_lite_stop_capture(fimc, false);
349 static int queue_setup(struct vb2_queue *vq,
350 unsigned int *num_buffers, unsigned int *num_planes,
351 unsigned int sizes[], struct device *alloc_devs[])
353 struct fimc_lite *fimc = vq->drv_priv;
354 struct flite_frame *frame = &fimc->out_frame;
355 const struct fimc_fmt *fmt = frame->fmt;
356 unsigned long wh = frame->f_width * frame->f_height;
363 if (*num_planes != fmt->memplanes)
365 for (i = 0; i < *num_planes; i++)
366 if (sizes[i] < (wh * fmt->depth[i]) / 8)
371 *num_planes = fmt->memplanes;
373 for (i = 0; i < fmt->memplanes; i++)
374 sizes[i] = (wh * fmt->depth[i]) / 8;
379 static int buffer_prepare(struct vb2_buffer *vb)
381 struct vb2_queue *vq = vb->vb2_queue;
382 struct fimc_lite *fimc = vq->drv_priv;
385 if (fimc->out_frame.fmt == NULL)
388 for (i = 0; i < fimc->out_frame.fmt->memplanes; i++) {
389 unsigned long size = fimc->payload[i];
391 if (vb2_plane_size(vb, i) < size) {
392 v4l2_err(&fimc->ve.vdev,
393 "User buffer too small (%ld < %ld)\n",
394 vb2_plane_size(vb, i), size);
397 vb2_set_plane_payload(vb, i, size);
403 static void buffer_queue(struct vb2_buffer *vb)
405 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
406 struct flite_buffer *buf
407 = container_of(vbuf, struct flite_buffer, vb);
408 struct fimc_lite *fimc = vb2_get_drv_priv(vb->vb2_queue);
411 spin_lock_irqsave(&fimc->slock, flags);
412 buf->addr = vb2_dma_contig_plane_dma_addr(vb, 0);
414 buf->index = fimc->buf_index++;
415 if (fimc->buf_index >= fimc->reqbufs_count)
418 if (!test_bit(ST_FLITE_SUSPENDED, &fimc->state) &&
419 !test_bit(ST_FLITE_STREAM, &fimc->state) &&
420 list_empty(&fimc->active_buf_q)) {
421 flite_hw_set_dma_buffer(fimc, buf);
422 fimc_lite_active_queue_add(fimc, buf);
424 fimc_lite_pending_queue_add(fimc, buf);
427 if (vb2_is_streaming(&fimc->vb_queue) &&
428 !list_empty(&fimc->pending_buf_q) &&
429 !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
430 flite_hw_capture_start(fimc);
431 spin_unlock_irqrestore(&fimc->slock, flags);
433 if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
434 fimc_pipeline_call(&fimc->ve, set_stream, 1);
437 spin_unlock_irqrestore(&fimc->slock, flags);
440 static const struct vb2_ops fimc_lite_qops = {
441 .queue_setup = queue_setup,
442 .buf_prepare = buffer_prepare,
443 .buf_queue = buffer_queue,
444 .wait_prepare = vb2_ops_wait_prepare,
445 .wait_finish = vb2_ops_wait_finish,
446 .start_streaming = start_streaming,
447 .stop_streaming = stop_streaming,
450 static void fimc_lite_clear_event_counters(struct fimc_lite *fimc)
454 spin_lock_irqsave(&fimc->slock, flags);
455 memset(&fimc->events, 0, sizeof(fimc->events));
456 spin_unlock_irqrestore(&fimc->slock, flags);
459 static int fimc_lite_open(struct file *file)
461 struct fimc_lite *fimc = video_drvdata(file);
462 struct media_entity *me = &fimc->ve.vdev.entity;
465 mutex_lock(&fimc->lock);
466 if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) {
471 set_bit(ST_FLITE_IN_USE, &fimc->state);
472 ret = pm_runtime_resume_and_get(&fimc->pdev->dev);
476 ret = v4l2_fh_open(file);
480 if (!v4l2_fh_is_singular_file(file) ||
481 atomic_read(&fimc->out_path) != FIMC_IO_DMA)
484 mutex_lock(&me->graph_obj.mdev->graph_mutex);
486 ret = fimc_pipeline_call(&fimc->ve, open, me, true);
488 /* Mark video pipeline ending at this video node as in use. */
492 mutex_unlock(&me->graph_obj.mdev->graph_mutex);
495 fimc_lite_clear_event_counters(fimc);
499 v4l2_fh_release(file);
501 pm_runtime_put_sync(&fimc->pdev->dev);
503 clear_bit(ST_FLITE_IN_USE, &fimc->state);
505 mutex_unlock(&fimc->lock);
509 static int fimc_lite_release(struct file *file)
511 struct fimc_lite *fimc = video_drvdata(file);
512 struct media_entity *entity = &fimc->ve.vdev.entity;
514 mutex_lock(&fimc->lock);
516 if (v4l2_fh_is_singular_file(file) &&
517 atomic_read(&fimc->out_path) == FIMC_IO_DMA) {
518 if (fimc->streaming) {
519 video_device_pipeline_stop(&fimc->ve.vdev);
520 fimc->streaming = false;
522 fimc_lite_stop_capture(fimc, false);
523 fimc_pipeline_call(&fimc->ve, close);
524 clear_bit(ST_FLITE_IN_USE, &fimc->state);
526 mutex_lock(&entity->graph_obj.mdev->graph_mutex);
528 mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
531 _vb2_fop_release(file, NULL);
532 pm_runtime_put(&fimc->pdev->dev);
533 clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
535 mutex_unlock(&fimc->lock);
539 static const struct v4l2_file_operations fimc_lite_fops = {
540 .owner = THIS_MODULE,
541 .open = fimc_lite_open,
542 .release = fimc_lite_release,
543 .poll = vb2_fop_poll,
544 .unlocked_ioctl = video_ioctl2,
545 .mmap = vb2_fop_mmap,
549 * Format and crop negotiation helpers
552 static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc,
553 struct v4l2_subdev_state *sd_state,
554 struct v4l2_subdev_format *format)
556 struct flite_drvdata *dd = fimc->dd;
557 struct v4l2_mbus_framefmt *mf = &format->format;
558 const struct fimc_fmt *fmt = NULL;
560 if (format->pad == FLITE_SD_PAD_SINK) {
561 v4l_bound_align_image(&mf->width, 8, dd->max_width,
562 ffs(dd->out_width_align) - 1,
563 &mf->height, 0, dd->max_height, 0, 0);
565 fmt = fimc_lite_find_format(NULL, &mf->code, 0, 0);
569 mf->colorspace = fmt->colorspace;
570 mf->code = fmt->mbus_code;
572 struct flite_frame *sink = &fimc->inp_frame;
573 struct v4l2_mbus_framefmt *sink_fmt;
574 struct v4l2_rect *rect;
576 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
577 sink_fmt = v4l2_subdev_state_get_format(sd_state,
580 mf->code = sink_fmt->code;
581 mf->colorspace = sink_fmt->colorspace;
583 rect = v4l2_subdev_state_get_crop(sd_state,
586 mf->code = sink->fmt->mbus_code;
587 mf->colorspace = sink->fmt->colorspace;
591 /* Allow changing format only on sink pad */
592 mf->width = rect->width;
593 mf->height = rect->height;
596 mf->field = V4L2_FIELD_NONE;
598 v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n",
599 mf->code, mf->colorspace, mf->width, mf->height);
604 static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r)
606 struct flite_frame *frame = &fimc->inp_frame;
608 v4l_bound_align_image(&r->width, 0, frame->f_width, 0,
609 &r->height, 0, frame->f_height, 0, 0);
611 /* Adjust left/top if cropping rectangle got out of bounds */
612 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
613 r->left = round_down(r->left, fimc->dd->win_hor_offs_align);
614 r->top = clamp_t(u32, r->top, 0, frame->f_height - r->height);
616 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, sink fmt: %dx%d\n",
617 r->left, r->top, r->width, r->height,
618 frame->f_width, frame->f_height);
621 static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r)
623 struct flite_frame *frame = &fimc->out_frame;
624 struct v4l2_rect *crop_rect = &fimc->inp_frame.rect;
626 /* Scaling is not supported so we enforce compose rectangle size
627 same as size of the sink crop rectangle. */
628 r->width = crop_rect->width;
629 r->height = crop_rect->height;
631 /* Adjust left/top if the composing rectangle got out of bounds */
632 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
633 r->left = round_down(r->left, fimc->dd->out_hor_offs_align);
634 r->top = clamp_t(u32, r->top, 0, fimc->out_frame.f_height - r->height);
636 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, source fmt: %dx%d\n",
637 r->left, r->top, r->width, r->height,
638 frame->f_width, frame->f_height);
642 * Video node ioctl operations
644 static int fimc_lite_querycap(struct file *file, void *priv,
645 struct v4l2_capability *cap)
647 strscpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver));
648 strscpy(cap->card, FIMC_LITE_DRV_NAME, sizeof(cap->card));
652 static int fimc_lite_enum_fmt(struct file *file, void *priv,
653 struct v4l2_fmtdesc *f)
655 const struct fimc_fmt *fmt;
657 if (f->index >= ARRAY_SIZE(fimc_lite_formats))
660 fmt = &fimc_lite_formats[f->index];
661 f->pixelformat = fmt->fourcc;
666 static int fimc_lite_g_fmt_mplane(struct file *file, void *fh,
667 struct v4l2_format *f)
669 struct fimc_lite *fimc = video_drvdata(file);
670 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
671 struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[0];
672 struct flite_frame *frame = &fimc->out_frame;
673 const struct fimc_fmt *fmt = frame->fmt;
675 plane_fmt->bytesperline = (frame->f_width * fmt->depth[0]) / 8;
676 plane_fmt->sizeimage = plane_fmt->bytesperline * frame->f_height;
678 pixm->num_planes = fmt->memplanes;
679 pixm->pixelformat = fmt->fourcc;
680 pixm->width = frame->f_width;
681 pixm->height = frame->f_height;
682 pixm->field = V4L2_FIELD_NONE;
683 pixm->colorspace = fmt->colorspace;
687 static int fimc_lite_try_fmt(struct fimc_lite *fimc,
688 struct v4l2_pix_format_mplane *pixm,
689 const struct fimc_fmt **ffmt)
691 u32 bpl = pixm->plane_fmt[0].bytesperline;
692 struct flite_drvdata *dd = fimc->dd;
693 const struct fimc_fmt *inp_fmt = fimc->inp_frame.fmt;
694 const struct fimc_fmt *fmt;
696 if (WARN_ON(inp_fmt == NULL))
699 * We allow some flexibility only for YUV formats. In case of raw
700 * raw Bayer the FIMC-LITE's output format must match its camera
701 * interface input format.
703 if (inp_fmt->flags & FMT_FLAGS_YUV)
704 fmt = fimc_lite_find_format(&pixm->pixelformat, NULL,
709 if (WARN_ON(fmt == NULL))
713 v4l_bound_align_image(&pixm->width, 8, dd->max_width,
714 ffs(dd->out_width_align) - 1,
715 &pixm->height, 0, dd->max_height, 0, 0);
717 if ((bpl == 0 || ((bpl * 8) / fmt->depth[0]) < pixm->width))
718 pixm->plane_fmt[0].bytesperline = (pixm->width *
721 if (pixm->plane_fmt[0].sizeimage == 0)
722 pixm->plane_fmt[0].sizeimage = (pixm->width * pixm->height *
724 pixm->num_planes = fmt->memplanes;
725 pixm->pixelformat = fmt->fourcc;
726 pixm->colorspace = fmt->colorspace;
727 pixm->field = V4L2_FIELD_NONE;
731 static int fimc_lite_try_fmt_mplane(struct file *file, void *fh,
732 struct v4l2_format *f)
734 struct fimc_lite *fimc = video_drvdata(file);
735 return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL);
738 static int fimc_lite_s_fmt_mplane(struct file *file, void *priv,
739 struct v4l2_format *f)
741 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
742 struct fimc_lite *fimc = video_drvdata(file);
743 struct flite_frame *frame = &fimc->out_frame;
744 const struct fimc_fmt *fmt = NULL;
747 if (vb2_is_busy(&fimc->vb_queue))
750 ret = fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, &fmt);
755 fimc->payload[0] = max((pixm->width * pixm->height * fmt->depth[0]) / 8,
756 pixm->plane_fmt[0].sizeimage);
757 frame->f_width = pixm->width;
758 frame->f_height = pixm->height;
763 static int fimc_pipeline_validate(struct fimc_lite *fimc)
765 struct v4l2_subdev *sd = &fimc->subdev;
766 struct v4l2_subdev_format sink_fmt = {
767 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
769 struct v4l2_subdev_format src_fmt = {
770 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
772 struct media_pad *pad;
776 /* Retrieve format at the sink pad */
777 pad = &sd->entity.pads[0];
778 if (!(pad->flags & MEDIA_PAD_FL_SINK))
780 /* Don't call FIMC subdev operation to avoid nested locking */
781 if (sd == &fimc->subdev) {
782 struct flite_frame *ff = &fimc->out_frame;
783 sink_fmt.format.width = ff->f_width;
784 sink_fmt.format.height = ff->f_height;
785 sink_fmt.format.code = fimc->inp_frame.fmt->mbus_code;
787 sink_fmt.pad = pad->index;
788 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL,
790 if (ret < 0 && ret != -ENOIOCTLCMD)
793 /* Retrieve format at the source pad */
794 pad = media_pad_remote_pad_first(pad);
795 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
798 sd = media_entity_to_v4l2_subdev(pad->entity);
799 src_fmt.pad = pad->index;
800 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
801 if (ret < 0 && ret != -ENOIOCTLCMD)
804 if (src_fmt.format.width != sink_fmt.format.width ||
805 src_fmt.format.height != sink_fmt.format.height ||
806 src_fmt.format.code != sink_fmt.format.code)
812 static int fimc_lite_streamon(struct file *file, void *priv,
813 enum v4l2_buf_type type)
815 struct fimc_lite *fimc = video_drvdata(file);
818 if (fimc_lite_active(fimc))
821 ret = video_device_pipeline_start(&fimc->ve.vdev, &fimc->ve.pipe->mp);
825 ret = fimc_pipeline_validate(fimc);
829 fimc->sensor = fimc_find_remote_sensor(&fimc->subdev.entity);
831 ret = vb2_ioctl_streamon(file, priv, type);
833 fimc->streaming = true;
838 video_device_pipeline_stop(&fimc->ve.vdev);
842 static int fimc_lite_streamoff(struct file *file, void *priv,
843 enum v4l2_buf_type type)
845 struct fimc_lite *fimc = video_drvdata(file);
848 ret = vb2_ioctl_streamoff(file, priv, type);
852 video_device_pipeline_stop(&fimc->ve.vdev);
853 fimc->streaming = false;
857 static int fimc_lite_reqbufs(struct file *file, void *priv,
858 struct v4l2_requestbuffers *reqbufs)
860 struct fimc_lite *fimc = video_drvdata(file);
863 reqbufs->count = max_t(u32, FLITE_REQ_BUFS_MIN, reqbufs->count);
864 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
866 fimc->reqbufs_count = reqbufs->count;
871 static int fimc_lite_g_selection(struct file *file, void *fh,
872 struct v4l2_selection *sel)
874 struct fimc_lite *fimc = video_drvdata(file);
875 struct flite_frame *f = &fimc->out_frame;
877 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
880 switch (sel->target) {
881 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
882 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
885 sel->r.width = f->f_width;
886 sel->r.height = f->f_height;
889 case V4L2_SEL_TGT_COMPOSE:
897 static int fimc_lite_s_selection(struct file *file, void *fh,
898 struct v4l2_selection *sel)
900 struct fimc_lite *fimc = video_drvdata(file);
901 struct flite_frame *f = &fimc->out_frame;
902 struct v4l2_rect rect = sel->r;
905 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
906 sel->target != V4L2_SEL_TGT_COMPOSE)
909 fimc_lite_try_compose(fimc, &rect);
911 if ((sel->flags & V4L2_SEL_FLAG_LE) &&
912 !v4l2_rect_enclosed(&rect, &sel->r))
915 if ((sel->flags & V4L2_SEL_FLAG_GE) &&
916 !v4l2_rect_enclosed(&sel->r, &rect))
920 spin_lock_irqsave(&fimc->slock, flags);
922 set_bit(ST_FLITE_CONFIG, &fimc->state);
923 spin_unlock_irqrestore(&fimc->slock, flags);
928 static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = {
929 .vidioc_querycap = fimc_lite_querycap,
930 .vidioc_enum_fmt_vid_cap = fimc_lite_enum_fmt,
931 .vidioc_try_fmt_vid_cap_mplane = fimc_lite_try_fmt_mplane,
932 .vidioc_s_fmt_vid_cap_mplane = fimc_lite_s_fmt_mplane,
933 .vidioc_g_fmt_vid_cap_mplane = fimc_lite_g_fmt_mplane,
934 .vidioc_g_selection = fimc_lite_g_selection,
935 .vidioc_s_selection = fimc_lite_s_selection,
936 .vidioc_reqbufs = fimc_lite_reqbufs,
937 .vidioc_querybuf = vb2_ioctl_querybuf,
938 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
939 .vidioc_create_bufs = vb2_ioctl_create_bufs,
940 .vidioc_qbuf = vb2_ioctl_qbuf,
941 .vidioc_dqbuf = vb2_ioctl_dqbuf,
942 .vidioc_streamon = fimc_lite_streamon,
943 .vidioc_streamoff = fimc_lite_streamoff,
946 /* Capture subdev media entity operations */
947 static int fimc_lite_link_setup(struct media_entity *entity,
948 const struct media_pad *local,
949 const struct media_pad *remote, u32 flags)
951 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
952 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
955 if (WARN_ON(fimc == NULL))
958 v4l2_dbg(1, debug, sd, "%s: %s --> %s, flags: 0x%x. source_id: 0x%x\n",
959 __func__, remote->entity->name, local->entity->name,
960 flags, fimc->source_subdev_grp_id);
962 switch (local->index) {
963 case FLITE_SD_PAD_SINK:
964 if (flags & MEDIA_LNK_FL_ENABLED) {
965 if (fimc->source_subdev_grp_id == 0)
966 fimc->source_subdev_grp_id = sd->grp_id;
970 fimc->source_subdev_grp_id = 0;
975 case FLITE_SD_PAD_SOURCE_DMA:
976 if (!(flags & MEDIA_LNK_FL_ENABLED))
977 atomic_set(&fimc->out_path, FIMC_IO_NONE);
979 atomic_set(&fimc->out_path, FIMC_IO_DMA);
982 case FLITE_SD_PAD_SOURCE_ISP:
983 if (!(flags & MEDIA_LNK_FL_ENABLED))
984 atomic_set(&fimc->out_path, FIMC_IO_NONE);
986 atomic_set(&fimc->out_path, FIMC_IO_ISP);
990 v4l2_err(sd, "Invalid pad index\n");
998 static const struct media_entity_operations fimc_lite_subdev_media_ops = {
999 .link_setup = fimc_lite_link_setup,
1002 static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1003 struct v4l2_subdev_state *sd_state,
1004 struct v4l2_subdev_mbus_code_enum *code)
1006 const struct fimc_fmt *fmt;
1008 fmt = fimc_lite_find_format(NULL, NULL, 0, code->index);
1011 code->code = fmt->mbus_code;
1015 static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt(
1016 struct v4l2_subdev *sd,
1017 struct v4l2_subdev_state *sd_state, unsigned int pad)
1019 if (pad != FLITE_SD_PAD_SINK)
1020 pad = FLITE_SD_PAD_SOURCE_DMA;
1022 return v4l2_subdev_state_get_format(sd_state, pad);
1025 static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd,
1026 struct v4l2_subdev_state *sd_state,
1027 struct v4l2_subdev_format *fmt)
1029 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1030 struct v4l2_mbus_framefmt *mf = &fmt->format;
1031 struct flite_frame *f = &fimc->inp_frame;
1033 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1034 mf = __fimc_lite_subdev_get_try_fmt(sd, sd_state, fmt->pad);
1039 mutex_lock(&fimc->lock);
1040 mf->colorspace = f->fmt->colorspace;
1041 mf->code = f->fmt->mbus_code;
1043 if (fmt->pad == FLITE_SD_PAD_SINK) {
1044 /* full camera input frame size */
1045 mf->width = f->f_width;
1046 mf->height = f->f_height;
1049 mf->width = f->rect.width;
1050 mf->height = f->rect.height;
1052 mutex_unlock(&fimc->lock);
1056 static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd,
1057 struct v4l2_subdev_state *sd_state,
1058 struct v4l2_subdev_format *fmt)
1060 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1061 struct v4l2_mbus_framefmt *mf = &fmt->format;
1062 struct flite_frame *sink = &fimc->inp_frame;
1063 struct flite_frame *source = &fimc->out_frame;
1064 const struct fimc_fmt *ffmt;
1066 v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %dx%d\n",
1067 fmt->pad, mf->code, mf->width, mf->height);
1069 mutex_lock(&fimc->lock);
1071 if ((atomic_read(&fimc->out_path) == FIMC_IO_ISP &&
1072 media_entity_is_streaming(&sd->entity)) ||
1073 (atomic_read(&fimc->out_path) == FIMC_IO_DMA &&
1074 vb2_is_busy(&fimc->vb_queue))) {
1075 mutex_unlock(&fimc->lock);
1079 ffmt = fimc_lite_subdev_try_fmt(fimc, sd_state, fmt);
1081 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1082 struct v4l2_mbus_framefmt *src_fmt;
1084 mf = __fimc_lite_subdev_get_try_fmt(sd, sd_state, fmt->pad);
1087 if (fmt->pad == FLITE_SD_PAD_SINK) {
1088 unsigned int pad = FLITE_SD_PAD_SOURCE_DMA;
1089 src_fmt = __fimc_lite_subdev_get_try_fmt(sd, sd_state,
1094 mutex_unlock(&fimc->lock);
1098 if (fmt->pad == FLITE_SD_PAD_SINK) {
1099 sink->f_width = mf->width;
1100 sink->f_height = mf->height;
1102 /* Set sink crop rectangle */
1103 sink->rect.width = mf->width;
1104 sink->rect.height = mf->height;
1105 sink->rect.left = 0;
1107 /* Reset source format and crop rectangle */
1108 source->rect = sink->rect;
1109 source->f_width = mf->width;
1110 source->f_height = mf->height;
1113 mutex_unlock(&fimc->lock);
1117 static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd,
1118 struct v4l2_subdev_state *sd_state,
1119 struct v4l2_subdev_selection *sel)
1121 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1122 struct flite_frame *f = &fimc->inp_frame;
1124 if ((sel->target != V4L2_SEL_TGT_CROP &&
1125 sel->target != V4L2_SEL_TGT_CROP_BOUNDS) ||
1126 sel->pad != FLITE_SD_PAD_SINK)
1129 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1130 sel->r = *v4l2_subdev_state_get_crop(sd_state, sel->pad);
1134 mutex_lock(&fimc->lock);
1135 if (sel->target == V4L2_SEL_TGT_CROP) {
1140 sel->r.width = f->f_width;
1141 sel->r.height = f->f_height;
1143 mutex_unlock(&fimc->lock);
1145 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1146 __func__, f->rect.left, f->rect.top, f->rect.width,
1147 f->rect.height, f->f_width, f->f_height);
1152 static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd,
1153 struct v4l2_subdev_state *sd_state,
1154 struct v4l2_subdev_selection *sel)
1156 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1157 struct flite_frame *f = &fimc->inp_frame;
1160 if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != FLITE_SD_PAD_SINK)
1163 mutex_lock(&fimc->lock);
1164 fimc_lite_try_crop(fimc, &sel->r);
1166 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1167 *v4l2_subdev_state_get_crop(sd_state, sel->pad) = sel->r;
1169 unsigned long flags;
1170 spin_lock_irqsave(&fimc->slock, flags);
1172 /* Same crop rectangle on the source pad */
1173 fimc->out_frame.rect = sel->r;
1174 set_bit(ST_FLITE_CONFIG, &fimc->state);
1175 spin_unlock_irqrestore(&fimc->slock, flags);
1177 mutex_unlock(&fimc->lock);
1179 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1180 __func__, f->rect.left, f->rect.top, f->rect.width,
1181 f->rect.height, f->f_width, f->f_height);
1186 static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on)
1188 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1189 unsigned long flags;
1193 * Find sensor subdev linked to FIMC-LITE directly or through
1194 * MIPI-CSIS. This is required for configuration where FIMC-LITE
1195 * is used as a subdev only and feeds data internally to FIMC-IS.
1196 * The pipeline links are protected through entity.pipe so there is no
1197 * need to take the media graph mutex here.
1199 fimc->sensor = fimc_find_remote_sensor(&sd->entity);
1201 if (atomic_read(&fimc->out_path) != FIMC_IO_ISP)
1202 return -ENOIOCTLCMD;
1204 mutex_lock(&fimc->lock);
1206 flite_hw_reset(fimc);
1207 ret = fimc_lite_hw_init(fimc, true);
1209 spin_lock_irqsave(&fimc->slock, flags);
1210 flite_hw_capture_start(fimc);
1211 spin_unlock_irqrestore(&fimc->slock, flags);
1214 set_bit(ST_FLITE_OFF, &fimc->state);
1216 spin_lock_irqsave(&fimc->slock, flags);
1217 flite_hw_capture_stop(fimc);
1218 spin_unlock_irqrestore(&fimc->slock, flags);
1220 ret = wait_event_timeout(fimc->irq_queue,
1221 !test_bit(ST_FLITE_OFF, &fimc->state),
1222 msecs_to_jiffies(200));
1224 v4l2_err(sd, "s_stream(0) timeout\n");
1225 clear_bit(ST_FLITE_RUN, &fimc->state);
1228 mutex_unlock(&fimc->lock);
1232 static int fimc_lite_log_status(struct v4l2_subdev *sd)
1234 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1236 flite_hw_dump_regs(fimc, __func__);
1240 static int fimc_lite_subdev_registered(struct v4l2_subdev *sd)
1242 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1243 struct vb2_queue *q = &fimc->vb_queue;
1244 struct video_device *vfd = &fimc->ve.vdev;
1247 memset(vfd, 0, sizeof(*vfd));
1248 atomic_set(&fimc->out_path, FIMC_IO_DMA);
1250 snprintf(vfd->name, sizeof(vfd->name), "fimc-lite.%d.capture",
1253 vfd->fops = &fimc_lite_fops;
1254 vfd->ioctl_ops = &fimc_lite_ioctl_ops;
1255 vfd->v4l2_dev = sd->v4l2_dev;
1257 vfd->release = video_device_release_empty;
1259 vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING;
1260 fimc->reqbufs_count = 0;
1262 INIT_LIST_HEAD(&fimc->pending_buf_q);
1263 INIT_LIST_HEAD(&fimc->active_buf_q);
1265 memset(q, 0, sizeof(*q));
1266 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1267 q->io_modes = VB2_MMAP | VB2_USERPTR;
1268 q->ops = &fimc_lite_qops;
1269 q->mem_ops = &vb2_dma_contig_memops;
1270 q->buf_struct_size = sizeof(struct flite_buffer);
1272 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1273 q->lock = &fimc->lock;
1274 q->dev = &fimc->pdev->dev;
1276 ret = vb2_queue_init(q);
1280 fimc->vd_pad.flags = MEDIA_PAD_FL_SINK;
1281 ret = media_entity_pads_init(&vfd->entity, 1, &fimc->vd_pad);
1285 video_set_drvdata(vfd, fimc);
1286 fimc->ve.pipe = v4l2_get_subdev_hostdata(sd);
1288 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1290 media_entity_cleanup(&vfd->entity);
1291 fimc->ve.pipe = NULL;
1295 v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n",
1296 vfd->name, video_device_node_name(vfd));
1300 static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd)
1302 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1307 mutex_lock(&fimc->lock);
1309 if (video_is_registered(&fimc->ve.vdev)) {
1310 video_unregister_device(&fimc->ve.vdev);
1311 media_entity_cleanup(&fimc->ve.vdev.entity);
1312 fimc->ve.pipe = NULL;
1315 mutex_unlock(&fimc->lock);
1318 static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = {
1319 .registered = fimc_lite_subdev_registered,
1320 .unregistered = fimc_lite_subdev_unregistered,
1323 static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = {
1324 .enum_mbus_code = fimc_lite_subdev_enum_mbus_code,
1325 .get_selection = fimc_lite_subdev_get_selection,
1326 .set_selection = fimc_lite_subdev_set_selection,
1327 .get_fmt = fimc_lite_subdev_get_fmt,
1328 .set_fmt = fimc_lite_subdev_set_fmt,
1331 static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = {
1332 .s_stream = fimc_lite_subdev_s_stream,
1335 static const struct v4l2_subdev_core_ops fimc_lite_core_ops = {
1336 .log_status = fimc_lite_log_status,
1339 static const struct v4l2_subdev_ops fimc_lite_subdev_ops = {
1340 .core = &fimc_lite_core_ops,
1341 .video = &fimc_lite_subdev_video_ops,
1342 .pad = &fimc_lite_subdev_pad_ops,
1345 static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl)
1347 struct fimc_lite *fimc = container_of(ctrl->handler, struct fimc_lite,
1349 set_bit(ST_FLITE_CONFIG, &fimc->state);
1353 static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = {
1354 .s_ctrl = fimc_lite_s_ctrl,
1357 static const struct v4l2_ctrl_config fimc_lite_ctrl = {
1358 .ops = &fimc_lite_ctrl_ops,
1359 .id = V4L2_CTRL_CLASS_USER | 0x1001,
1360 .type = V4L2_CTRL_TYPE_BOOLEAN,
1361 .name = "Test Pattern 640x480",
1365 static void fimc_lite_set_default_config(struct fimc_lite *fimc)
1367 struct flite_frame *sink = &fimc->inp_frame;
1368 struct flite_frame *source = &fimc->out_frame;
1370 sink->fmt = &fimc_lite_formats[0];
1371 sink->f_width = FLITE_DEFAULT_WIDTH;
1372 sink->f_height = FLITE_DEFAULT_HEIGHT;
1374 sink->rect.width = FLITE_DEFAULT_WIDTH;
1375 sink->rect.height = FLITE_DEFAULT_HEIGHT;
1376 sink->rect.left = 0;
1382 static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
1384 struct v4l2_ctrl_handler *handler = &fimc->ctrl_handler;
1385 struct v4l2_subdev *sd = &fimc->subdev;
1388 v4l2_subdev_init(sd, &fimc_lite_subdev_ops);
1389 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1390 snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index);
1392 fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1393 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE;
1394 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE;
1395 ret = media_entity_pads_init(&sd->entity, FLITE_SD_PADS_NUM,
1400 v4l2_ctrl_handler_init(handler, 1);
1401 fimc->test_pattern = v4l2_ctrl_new_custom(handler, &fimc_lite_ctrl,
1403 if (handler->error) {
1404 media_entity_cleanup(&sd->entity);
1405 return handler->error;
1408 sd->ctrl_handler = handler;
1409 sd->internal_ops = &fimc_lite_subdev_internal_ops;
1410 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1411 sd->entity.ops = &fimc_lite_subdev_media_ops;
1412 sd->owner = THIS_MODULE;
1413 v4l2_set_subdevdata(sd, fimc);
1418 static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc)
1420 struct v4l2_subdev *sd = &fimc->subdev;
1422 v4l2_device_unregister_subdev(sd);
1423 media_entity_cleanup(&sd->entity);
1424 v4l2_ctrl_handler_free(&fimc->ctrl_handler);
1425 v4l2_set_subdevdata(sd, NULL);
1428 static void fimc_lite_clk_put(struct fimc_lite *fimc)
1430 if (IS_ERR(fimc->clock))
1433 clk_put(fimc->clock);
1434 fimc->clock = ERR_PTR(-EINVAL);
1437 static int fimc_lite_clk_get(struct fimc_lite *fimc)
1439 fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME);
1440 return PTR_ERR_OR_ZERO(fimc->clock);
1443 static const struct of_device_id flite_of_match[];
1445 static int fimc_lite_probe(struct platform_device *pdev)
1447 struct flite_drvdata *drv_data = NULL;
1448 struct device *dev = &pdev->dev;
1449 const struct of_device_id *of_id;
1450 struct fimc_lite *fimc;
1457 fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL);
1461 of_id = of_match_node(flite_of_match, dev->of_node);
1463 drv_data = (struct flite_drvdata *)of_id->data;
1464 fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
1466 if (!drv_data || fimc->index >= drv_data->num_instances ||
1468 dev_err(dev, "Wrong %pOF node alias\n", dev->of_node);
1472 fimc->dd = drv_data;
1475 init_waitqueue_head(&fimc->irq_queue);
1476 spin_lock_init(&fimc->slock);
1477 mutex_init(&fimc->lock);
1479 fimc->regs = devm_platform_ioremap_resource(pdev, 0);
1480 if (IS_ERR(fimc->regs))
1481 return PTR_ERR(fimc->regs);
1483 irq = platform_get_irq(pdev, 0);
1487 ret = fimc_lite_clk_get(fimc);
1491 ret = devm_request_irq(dev, irq, flite_irq_handler,
1492 0, dev_name(dev), fimc);
1494 dev_err(dev, "Failed to install irq (%d)\n", ret);
1498 /* The video node will be created within the subdev's registered() op */
1499 ret = fimc_lite_create_capture_subdev(fimc);
1503 platform_set_drvdata(pdev, fimc);
1504 pm_runtime_enable(dev);
1506 if (!pm_runtime_enabled(dev)) {
1507 ret = clk_prepare_enable(fimc->clock);
1512 vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
1514 fimc_lite_set_default_config(fimc);
1516 dev_dbg(dev, "FIMC-LITE.%d registered successfully\n",
1521 fimc_lite_unregister_capture_subdev(fimc);
1523 fimc_lite_clk_put(fimc);
1528 static int fimc_lite_runtime_resume(struct device *dev)
1530 struct fimc_lite *fimc = dev_get_drvdata(dev);
1532 clk_prepare_enable(fimc->clock);
1536 static int fimc_lite_runtime_suspend(struct device *dev)
1538 struct fimc_lite *fimc = dev_get_drvdata(dev);
1540 clk_disable_unprepare(fimc->clock);
1545 #ifdef CONFIG_PM_SLEEP
1546 static int fimc_lite_resume(struct device *dev)
1548 struct fimc_lite *fimc = dev_get_drvdata(dev);
1549 struct flite_buffer *buf;
1550 unsigned long flags;
1553 spin_lock_irqsave(&fimc->slock, flags);
1554 if (!test_and_clear_bit(ST_LPM, &fimc->state) ||
1555 !test_bit(ST_FLITE_IN_USE, &fimc->state)) {
1556 spin_unlock_irqrestore(&fimc->slock, flags);
1559 flite_hw_reset(fimc);
1560 spin_unlock_irqrestore(&fimc->slock, flags);
1562 if (!test_and_clear_bit(ST_FLITE_SUSPENDED, &fimc->state))
1565 INIT_LIST_HEAD(&fimc->active_buf_q);
1566 fimc_pipeline_call(&fimc->ve, open,
1567 &fimc->ve.vdev.entity, false);
1568 fimc_lite_hw_init(fimc, atomic_read(&fimc->out_path) == FIMC_IO_ISP);
1569 clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
1571 for (i = 0; i < fimc->reqbufs_count; i++) {
1572 if (list_empty(&fimc->pending_buf_q))
1574 buf = fimc_lite_pending_queue_pop(fimc);
1575 buffer_queue(&buf->vb.vb2_buf);
1580 static int fimc_lite_suspend(struct device *dev)
1582 struct fimc_lite *fimc = dev_get_drvdata(dev);
1583 bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state);
1586 if (test_and_set_bit(ST_LPM, &fimc->state))
1589 ret = fimc_lite_stop_capture(fimc, suspend);
1590 if (ret < 0 || !fimc_lite_active(fimc))
1593 return fimc_pipeline_call(&fimc->ve, close);
1595 #endif /* CONFIG_PM_SLEEP */
1597 static void fimc_lite_remove(struct platform_device *pdev)
1599 struct fimc_lite *fimc = platform_get_drvdata(pdev);
1600 struct device *dev = &pdev->dev;
1602 if (!pm_runtime_enabled(dev))
1603 clk_disable_unprepare(fimc->clock);
1605 pm_runtime_disable(dev);
1606 pm_runtime_set_suspended(dev);
1607 fimc_lite_unregister_capture_subdev(fimc);
1608 vb2_dma_contig_clear_max_seg_size(dev);
1609 fimc_lite_clk_put(fimc);
1611 dev_info(dev, "Driver unloaded\n");
1614 static const struct dev_pm_ops fimc_lite_pm_ops = {
1615 SET_SYSTEM_SLEEP_PM_OPS(fimc_lite_suspend, fimc_lite_resume)
1616 SET_RUNTIME_PM_OPS(fimc_lite_runtime_suspend, fimc_lite_runtime_resume,
1620 /* EXYNOS4212, EXYNOS4412 */
1621 static struct flite_drvdata fimc_lite_drvdata_exynos4 = {
1624 .out_width_align = 8,
1625 .win_hor_offs_align = 2,
1626 .out_hor_offs_align = 8,
1632 static struct flite_drvdata fimc_lite_drvdata_exynos5 = {
1635 .out_width_align = 8,
1636 .win_hor_offs_align = 2,
1637 .out_hor_offs_align = 8,
1642 static const struct of_device_id flite_of_match[] = {
1644 .compatible = "samsung,exynos4212-fimc-lite",
1645 .data = &fimc_lite_drvdata_exynos4,
1648 .compatible = "samsung,exynos5250-fimc-lite",
1649 .data = &fimc_lite_drvdata_exynos5,
1653 MODULE_DEVICE_TABLE(of, flite_of_match);
1655 static struct platform_driver fimc_lite_driver = {
1656 .probe = fimc_lite_probe,
1657 .remove_new = fimc_lite_remove,
1659 .of_match_table = flite_of_match,
1660 .name = FIMC_LITE_DRV_NAME,
1661 .pm = &fimc_lite_pm_ops,
1664 module_platform_driver(fimc_lite_driver);
1665 MODULE_LICENSE("GPL");
1666 MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME);