| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Sylwester Nawrocki | 8716 | 96.89% | 39 | 52.00% |
| Hans Verkuil | 139 | 1.55% | 6 | 8.00% |
| Sachin Kamat | 28 | 0.31% | 3 | 4.00% |
| Junghak Sung | 25 | 0.28% | 3 | 4.00% |
| Marek Szyprowski | 19 | 0.21% | 3 | 4.00% |
| Javier Martinez Canillas | 12 | 0.13% | 1 | 1.33% |
| Sakari Ailus | 9 | 0.10% | 3 | 4.00% |
| Mauro Carvalho Chehab | 9 | 0.10% | 4 | 5.33% |
| Thierry Reding | 8 | 0.09% | 1 | 1.33% |
| Boris Brezillon | 7 | 0.08% | 1 | 1.33% |
| Kamil Debski | 5 | 0.06% | 1 | 1.33% |
| Shaik Ameer Basha | 5 | 0.06% | 1 | 1.33% |
| Ricardo Ribalda Delgado | 3 | 0.03% | 1 | 1.33% |
| Laurent Pinchart | 2 | 0.02% | 1 | 1.33% |
| Thomas Gleixner | 2 | 0.02% | 1 | 1.33% |
| Arun Kumar K | 2 | 0.02% | 1 | 1.33% |
| Rob Herring | 1 | 0.01% | 1 | 1.33% |
| Vasyl Gomonovych | 1 | 0.01% | 1 | 1.33% |
| Rafael J. Wysocki | 1 | 0.01% | 1 | 1.33% |
| Andrzej Hajda | 1 | 0.01% | 1 | 1.33% |
| Julia Lawall | 1 | 0.01% | 1 | 1.33% |
| Total | 8996 | 75 |
// SPDX-License-Identifier: GPL-2.0-only /* * Samsung EXYNOS FIMC-LITE (camera host interface) driver * * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd. * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> */ #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__ #include <linux/bug.h> #include <linux/clk.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/module.h> #include <linux/of.h> #include <linux/types.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-mem2mem.h> #include <media/videobuf2-v4l2.h> #include <media/videobuf2-dma-contig.h> #include <media/drv-intf/exynos-fimc.h> #include "common.h" #include "fimc-core.h" #include "fimc-lite.h" #include "fimc-lite-reg.h" static int debug; module_param(debug, int, 0644); static const struct fimc_fmt fimc_lite_formats[] = { { .name = "YUV 4:2:2 packed, YCbYCr", .fourcc = V4L2_PIX_FMT_YUYV, .colorspace = V4L2_COLORSPACE_JPEG, .depth = { 16 }, .color = FIMC_FMT_YCBYCR422, .memplanes = 1, .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8, .flags = FMT_FLAGS_YUV, }, { .name = "YUV 4:2:2 packed, CbYCrY", .fourcc = V4L2_PIX_FMT_UYVY, .colorspace = V4L2_COLORSPACE_JPEG, .depth = { 16 }, .color = FIMC_FMT_CBYCRY422, .memplanes = 1, .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8, .flags = FMT_FLAGS_YUV, }, { .name = "YUV 4:2:2 packed, CrYCbY", .fourcc = V4L2_PIX_FMT_VYUY, .colorspace = V4L2_COLORSPACE_JPEG, .depth = { 16 }, .color = FIMC_FMT_CRYCBY422, .memplanes = 1, .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8, .flags = FMT_FLAGS_YUV, }, { .name = "YUV 4:2:2 packed, YCrYCb", .fourcc = V4L2_PIX_FMT_YVYU, .colorspace = V4L2_COLORSPACE_JPEG, .depth = { 16 }, .color = FIMC_FMT_YCRYCB422, .memplanes = 1, .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8, .flags = FMT_FLAGS_YUV, }, { .name = "RAW8 (GRBG)", .fourcc = V4L2_PIX_FMT_SGRBG8, .colorspace = V4L2_COLORSPACE_SRGB, .depth = { 8 }, .color = FIMC_FMT_RAW8, .memplanes = 1, .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8, .flags = FMT_FLAGS_RAW_BAYER, }, { .name = "RAW10 (GRBG)", .fourcc = V4L2_PIX_FMT_SGRBG10, .colorspace = V4L2_COLORSPACE_SRGB, .depth = { 16 }, .color = FIMC_FMT_RAW10, .memplanes = 1, .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10, .flags = FMT_FLAGS_RAW_BAYER, }, { .name = "RAW12 (GRBG)", .fourcc = V4L2_PIX_FMT_SGRBG12, .colorspace = V4L2_COLORSPACE_SRGB, .depth = { 16 }, .color = FIMC_FMT_RAW12, .memplanes = 1, .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12, .flags = FMT_FLAGS_RAW_BAYER, }, }; /** * fimc_lite_find_format - lookup fimc color format by fourcc or media bus code * @pixelformat: fourcc to match, ignored if null * @mbus_code: media bus code to match, ignored if null * @mask: the color format flags to match * @index: index to the fimc_lite_formats array, ignored if negative */ static const struct fimc_fmt *fimc_lite_find_format(const u32 *pixelformat, const u32 *mbus_code, unsigned int mask, int index) { const struct fimc_fmt *fmt, *def_fmt = NULL; unsigned int i; int id = 0; if (index >= (int)ARRAY_SIZE(fimc_lite_formats)) return NULL; for (i = 0; i < ARRAY_SIZE(fimc_lite_formats); ++i) { fmt = &fimc_lite_formats[i]; if (mask && !(fmt->flags & mask)) continue; if (pixelformat && fmt->fourcc == *pixelformat) return fmt; if (mbus_code && fmt->mbus_code == *mbus_code) return fmt; if (index == id) def_fmt = fmt; id++; } return def_fmt; } static int fimc_lite_hw_init(struct fimc_lite *fimc, bool isp_output) { struct fimc_source_info *si; unsigned long flags; if (fimc->sensor == NULL) return -ENXIO; if (fimc->inp_frame.fmt == NULL || fimc->out_frame.fmt == NULL) return -EINVAL; /* Get sensor configuration data from the sensor subdev */ si = v4l2_get_subdev_hostdata(fimc->sensor); if (!si) return -EINVAL; spin_lock_irqsave(&fimc->slock, flags); flite_hw_set_camera_bus(fimc, si); flite_hw_set_source_format(fimc, &fimc->inp_frame); flite_hw_set_window_offset(fimc, &fimc->inp_frame); flite_hw_set_dma_buf_mask(fimc, 0); flite_hw_set_output_dma(fimc, &fimc->out_frame, !isp_output); flite_hw_set_interrupt_mask(fimc); flite_hw_set_test_pattern(fimc, fimc->test_pattern->val); if (debug > 0) flite_hw_dump_regs(fimc, __func__); spin_unlock_irqrestore(&fimc->slock, flags); return 0; } /* * Reinitialize the driver so it is ready to start the streaming again. * Set fimc->state to indicate stream off and the hardware shut down state. * If not suspending (@suspend is false), return any buffers to videobuf2. * Otherwise put any owned buffers onto the pending buffers queue, so they * can be re-spun when the device is being resumed. Also perform FIMC * software reset and disable streaming on the whole pipeline if required. */ static int fimc_lite_reinit(struct fimc_lite *fimc, bool suspend) { struct flite_buffer *buf; unsigned long flags; bool streaming; spin_lock_irqsave(&fimc->slock, flags); streaming = fimc->state & (1 << ST_SENSOR_STREAM); fimc->state &= ~(1 << ST_FLITE_RUN | 1 << ST_FLITE_OFF | 1 << ST_FLITE_STREAM | 1 << ST_SENSOR_STREAM); if (suspend) fimc->state |= (1 << ST_FLITE_SUSPENDED); else fimc->state &= ~(1 << ST_FLITE_PENDING | 1 << ST_FLITE_SUSPENDED); /* Release unused buffers */ while (!suspend && !list_empty(&fimc->pending_buf_q)) { buf = fimc_lite_pending_queue_pop(fimc); vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); } /* If suspending put unused buffers onto pending queue */ while (!list_empty(&fimc->active_buf_q)) { buf = fimc_lite_active_queue_pop(fimc); if (suspend) fimc_lite_pending_queue_add(fimc, buf); else vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); } spin_unlock_irqrestore(&fimc->slock, flags); flite_hw_reset(fimc); if (!streaming) return 0; return fimc_pipeline_call(&fimc->ve, set_stream, 0); } static int fimc_lite_stop_capture(struct fimc_lite *fimc, bool suspend) { unsigned long flags; if (!fimc_lite_active(fimc)) return 0; spin_lock_irqsave(&fimc->slock, flags); set_bit(ST_FLITE_OFF, &fimc->state); flite_hw_capture_stop(fimc); spin_unlock_irqrestore(&fimc->slock, flags); wait_event_timeout(fimc->irq_queue, !test_bit(ST_FLITE_OFF, &fimc->state), (2*HZ/10)); /* 200 ms */ return fimc_lite_reinit(fimc, suspend); } /* Must be called with fimc.slock spinlock held. */ static void fimc_lite_config_update(struct fimc_lite *fimc) { flite_hw_set_window_offset(fimc, &fimc->inp_frame); flite_hw_set_dma_window(fimc, &fimc->out_frame); flite_hw_set_test_pattern(fimc, fimc->test_pattern->val); clear_bit(ST_FLITE_CONFIG, &fimc->state); } static irqreturn_t flite_irq_handler(int irq, void *priv) { struct fimc_lite *fimc = priv; struct flite_buffer *vbuf; unsigned long flags; u32 intsrc; spin_lock_irqsave(&fimc->slock, flags); intsrc = flite_hw_get_interrupt_source(fimc); flite_hw_clear_pending_irq(fimc); if (test_and_clear_bit(ST_FLITE_OFF, &fimc->state)) { wake_up(&fimc->irq_queue); goto done; } if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_OVERFLOW) { clear_bit(ST_FLITE_RUN, &fimc->state); fimc->events.data_overflow++; } if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_LASTCAPEND) { flite_hw_clear_last_capture_end(fimc); clear_bit(ST_FLITE_STREAM, &fimc->state); wake_up(&fimc->irq_queue); } if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) goto done; if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMSTART) && test_bit(ST_FLITE_RUN, &fimc->state) && !list_empty(&fimc->pending_buf_q)) { vbuf = fimc_lite_pending_queue_pop(fimc); flite_hw_set_dma_buffer(fimc, vbuf); fimc_lite_active_queue_add(fimc, vbuf); } if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMEND) && test_bit(ST_FLITE_RUN, &fimc->state) && !list_empty(&fimc->active_buf_q)) { vbuf = fimc_lite_active_queue_pop(fimc); vbuf->vb.vb2_buf.timestamp = ktime_get_ns(); vbuf->vb.sequence = fimc->frame_count++; flite_hw_mask_dma_buffer(fimc, vbuf->index); vb2_buffer_done(&vbuf->vb.vb2_buf, VB2_BUF_STATE_DONE); } if (test_bit(ST_FLITE_CONFIG, &fimc->state)) fimc_lite_config_update(fimc); if (list_empty(&fimc->pending_buf_q)) { flite_hw_capture_stop(fimc); clear_bit(ST_FLITE_STREAM, &fimc->state); } done: set_bit(ST_FLITE_RUN, &fimc->state); spin_unlock_irqrestore(&fimc->slock, flags); return IRQ_HANDLED; } static int start_streaming(struct vb2_queue *q, unsigned int count) { struct fimc_lite *fimc = q->drv_priv; unsigned long flags; int ret; spin_lock_irqsave(&fimc->slock, flags); fimc->buf_index = 0; fimc->frame_count = 0; spin_unlock_irqrestore(&fimc->slock, flags); ret = fimc_lite_hw_init(fimc, false); if (ret) { fimc_lite_reinit(fimc, false); return ret; } set_bit(ST_FLITE_PENDING, &fimc->state); if (!list_empty(&fimc->active_buf_q) && !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) { flite_hw_capture_start(fimc); if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state)) fimc_pipeline_call(&fimc->ve, set_stream, 1); } if (debug > 0) flite_hw_dump_regs(fimc, __func__); return 0; } static void stop_streaming(struct vb2_queue *q) { struct fimc_lite *fimc = q->drv_priv; if (!fimc_lite_active(fimc)) return; fimc_lite_stop_capture(fimc, false); } static int queue_setup(struct vb2_queue *vq, unsigned int *num_buffers, unsigned int *num_planes, unsigned int sizes[], struct device *alloc_devs[]) { struct fimc_lite *fimc = vq->drv_priv; struct flite_frame *frame = &fimc->out_frame; const struct fimc_fmt *fmt = frame->fmt; unsigned long wh = frame->f_width * frame->f_height; int i; if (fmt == NULL) return -EINVAL; if (*num_planes) { if (*num_planes != fmt->memplanes) return -EINVAL; for (i = 0; i < *num_planes; i++) if (sizes[i] < (wh * fmt->depth[i]) / 8) return -EINVAL; return 0; } *num_planes = fmt->memplanes; for (i = 0; i < fmt->memplanes; i++) sizes[i] = (wh * fmt->depth[i]) / 8; return 0; } static int buffer_prepare(struct vb2_buffer *vb) { struct vb2_queue *vq = vb->vb2_queue; struct fimc_lite *fimc = vq->drv_priv; int i; if (fimc->out_frame.fmt == NULL) return -EINVAL; for (i = 0; i < fimc->out_frame.fmt->memplanes; i++) { unsigned long size = fimc->payload[i]; if (vb2_plane_size(vb, i) < size) { v4l2_err(&fimc->ve.vdev, "User buffer too small (%ld < %ld)\n", vb2_plane_size(vb, i), size); return -EINVAL; } vb2_set_plane_payload(vb, i, size); } return 0; } static void buffer_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct flite_buffer *buf = container_of(vbuf, struct flite_buffer, vb); struct fimc_lite *fimc = vb2_get_drv_priv(vb->vb2_queue); unsigned long flags; spin_lock_irqsave(&fimc->slock, flags); buf->paddr = vb2_dma_contig_plane_dma_addr(vb, 0); buf->index = fimc->buf_index++; if (fimc->buf_index >= fimc->reqbufs_count) fimc->buf_index = 0; if (!test_bit(ST_FLITE_SUSPENDED, &fimc->state) && !test_bit(ST_FLITE_STREAM, &fimc->state) && list_empty(&fimc->active_buf_q)) { flite_hw_set_dma_buffer(fimc, buf); fimc_lite_active_queue_add(fimc, buf); } else { fimc_lite_pending_queue_add(fimc, buf); } if (vb2_is_streaming(&fimc->vb_queue) && !list_empty(&fimc->pending_buf_q) && !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) { flite_hw_capture_start(fimc); spin_unlock_irqrestore(&fimc->slock, flags); if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state)) fimc_pipeline_call(&fimc->ve, set_stream, 1); return; } spin_unlock_irqrestore(&fimc->slock, flags); } static const struct vb2_ops fimc_lite_qops = { .queue_setup = queue_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, .start_streaming = start_streaming, .stop_streaming = stop_streaming, }; static void fimc_lite_clear_event_counters(struct fimc_lite *fimc) { unsigned long flags; spin_lock_irqsave(&fimc->slock, flags); memset(&fimc->events, 0, sizeof(fimc->events)); spin_unlock_irqrestore(&fimc->slock, flags); } static int fimc_lite_open(struct file *file) { struct fimc_lite *fimc = video_drvdata(file); struct media_entity *me = &fimc->ve.vdev.entity; int ret; mutex_lock(&fimc->lock); if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) { ret = -EBUSY; goto unlock; } set_bit(ST_FLITE_IN_USE, &fimc->state); ret = pm_runtime_get_sync(&fimc->pdev->dev); if (ret < 0) goto unlock; ret = v4l2_fh_open(file); if (ret < 0) goto err_pm; if (!v4l2_fh_is_singular_file(file) || atomic_read(&fimc->out_path) != FIMC_IO_DMA) goto unlock; mutex_lock(&me->graph_obj.mdev->graph_mutex); ret = fimc_pipeline_call(&fimc->ve, open, me, true); /* Mark video pipeline ending at this video node as in use. */ if (ret == 0) me->use_count++; mutex_unlock(&me->graph_obj.mdev->graph_mutex); if (!ret) { fimc_lite_clear_event_counters(fimc); goto unlock; } v4l2_fh_release(file); err_pm: pm_runtime_put_sync(&fimc->pdev->dev); clear_bit(ST_FLITE_IN_USE, &fimc->state); unlock: mutex_unlock(&fimc->lock); return ret; } static int fimc_lite_release(struct file *file) { struct fimc_lite *fimc = video_drvdata(file); struct media_entity *entity = &fimc->ve.vdev.entity; mutex_lock(&fimc->lock); if (v4l2_fh_is_singular_file(file) && atomic_read(&fimc->out_path) == FIMC_IO_DMA) { if (fimc->streaming) { media_pipeline_stop(entity); fimc->streaming = false; } fimc_lite_stop_capture(fimc, false); fimc_pipeline_call(&fimc->ve, close); clear_bit(ST_FLITE_IN_USE, &fimc->state); mutex_lock(&entity->graph_obj.mdev->graph_mutex); entity->use_count--; mutex_unlock(&entity->graph_obj.mdev->graph_mutex); } _vb2_fop_release(file, NULL); pm_runtime_put(&fimc->pdev->dev); clear_bit(ST_FLITE_SUSPENDED, &fimc->state); mutex_unlock(&fimc->lock); return 0; } static const struct v4l2_file_operations fimc_lite_fops = { .owner = THIS_MODULE, .open = fimc_lite_open, .release = fimc_lite_release, .poll = vb2_fop_poll, .unlocked_ioctl = video_ioctl2, .mmap = vb2_fop_mmap, }; /* * Format and crop negotiation helpers */ static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *format) { struct flite_drvdata *dd = fimc->dd; struct v4l2_mbus_framefmt *mf = &format->format; const struct fimc_fmt *fmt = NULL; if (format->pad == FLITE_SD_PAD_SINK) { v4l_bound_align_image(&mf->width, 8, dd->max_width, ffs(dd->out_width_align) - 1, &mf->height, 0, dd->max_height, 0, 0); fmt = fimc_lite_find_format(NULL, &mf->code, 0, 0); if (WARN_ON(!fmt)) return NULL; mf->colorspace = fmt->colorspace; mf->code = fmt->mbus_code; } else { struct flite_frame *sink = &fimc->inp_frame; struct v4l2_mbus_framefmt *sink_fmt; struct v4l2_rect *rect; if (format->which == V4L2_SUBDEV_FORMAT_TRY) { sink_fmt = v4l2_subdev_get_try_format(&fimc->subdev, cfg, FLITE_SD_PAD_SINK); mf->code = sink_fmt->code; mf->colorspace = sink_fmt->colorspace; rect = v4l2_subdev_get_try_crop(&fimc->subdev, cfg, FLITE_SD_PAD_SINK); } else { mf->code = sink->fmt->mbus_code; mf->colorspace = sink->fmt->colorspace; rect = &sink->rect; } /* Allow changing format only on sink pad */ mf->width = rect->width; mf->height = rect->height; } mf->field = V4L2_FIELD_NONE; v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n", mf->code, mf->colorspace, mf->width, mf->height); return fmt; } static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r) { struct flite_frame *frame = &fimc->inp_frame; v4l_bound_align_image(&r->width, 0, frame->f_width, 0, &r->height, 0, frame->f_height, 0, 0); /* Adjust left/top if cropping rectangle got out of bounds */ r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width); r->left = round_down(r->left, fimc->dd->win_hor_offs_align); r->top = clamp_t(u32, r->top, 0, frame->f_height - r->height); v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, sink fmt: %dx%d\n", r->left, r->top, r->width, r->height, frame->f_width, frame->f_height); } static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r) { struct flite_frame *frame = &fimc->out_frame; struct v4l2_rect *crop_rect = &fimc->inp_frame.rect; /* Scaling is not supported so we enforce compose rectangle size same as size of the sink crop rectangle. */ r->width = crop_rect->width; r->height = crop_rect->height; /* Adjust left/top if the composing rectangle got out of bounds */ r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width); r->left = round_down(r->left, fimc->dd->out_hor_offs_align); r->top = clamp_t(u32, r->top, 0, fimc->out_frame.f_height - r->height); v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, source fmt: %dx%d\n", r->left, r->top, r->width, r->height, frame->f_width, frame->f_height); } /* * Video node ioctl operations */ static int fimc_lite_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct fimc_lite *fimc = video_drvdata(file); strscpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver)); strscpy(cap->card, FIMC_LITE_DRV_NAME, sizeof(cap->card)); snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", dev_name(&fimc->pdev->dev)); cap->device_caps = V4L2_CAP_STREAMING; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; } static int fimc_lite_enum_fmt_mplane(struct file *file, void *priv, struct v4l2_fmtdesc *f) { const struct fimc_fmt *fmt; if (f->index >= ARRAY_SIZE(fimc_lite_formats)) return -EINVAL; fmt = &fimc_lite_formats[f->index]; strscpy(f->description, fmt->name, sizeof(f->description)); f->pixelformat = fmt->fourcc; return 0; } static int fimc_lite_g_fmt_mplane(struct file *file, void *fh, struct v4l2_format *f) { struct fimc_lite *fimc = video_drvdata(file); struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[0]; struct flite_frame *frame = &fimc->out_frame; const struct fimc_fmt *fmt = frame->fmt; plane_fmt->bytesperline = (frame->f_width * fmt->depth[0]) / 8; plane_fmt->sizeimage = plane_fmt->bytesperline * frame->f_height; pixm->num_planes = fmt->memplanes; pixm->pixelformat = fmt->fourcc; pixm->width = frame->f_width; pixm->height = frame->f_height; pixm->field = V4L2_FIELD_NONE; pixm->colorspace = fmt->colorspace; return 0; } static int fimc_lite_try_fmt(struct fimc_lite *fimc, struct v4l2_pix_format_mplane *pixm, const struct fimc_fmt **ffmt) { u32 bpl = pixm->plane_fmt[0].bytesperline; struct flite_drvdata *dd = fimc->dd; const struct fimc_fmt *inp_fmt = fimc->inp_frame.fmt; const struct fimc_fmt *fmt; if (WARN_ON(inp_fmt == NULL)) return -EINVAL; /* * We allow some flexibility only for YUV formats. In case of raw * raw Bayer the FIMC-LITE's output format must match its camera * interface input format. */ if (inp_fmt->flags & FMT_FLAGS_YUV) fmt = fimc_lite_find_format(&pixm->pixelformat, NULL, inp_fmt->flags, 0); else fmt = inp_fmt; if (WARN_ON(fmt == NULL)) return -EINVAL; if (ffmt) *ffmt = fmt; v4l_bound_align_image(&pixm->width, 8, dd->max_width, ffs(dd->out_width_align) - 1, &pixm->height, 0, dd->max_height, 0, 0); if ((bpl == 0 || ((bpl * 8) / fmt->depth[0]) < pixm->width)) pixm->plane_fmt[0].bytesperline = (pixm->width * fmt->depth[0]) / 8; if (pixm->plane_fmt[0].sizeimage == 0) pixm->plane_fmt[0].sizeimage = (pixm->width * pixm->height * fmt->depth[0]) / 8; pixm->num_planes = fmt->memplanes; pixm->pixelformat = fmt->fourcc; pixm->colorspace = fmt->colorspace; pixm->field = V4L2_FIELD_NONE; return 0; } static int fimc_lite_try_fmt_mplane(struct file *file, void *fh, struct v4l2_format *f) { struct fimc_lite *fimc = video_drvdata(file); return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL); } static int fimc_lite_s_fmt_mplane(struct file *file, void *priv, struct v4l2_format *f) { struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; struct fimc_lite *fimc = video_drvdata(file); struct flite_frame *frame = &fimc->out_frame; const struct fimc_fmt *fmt = NULL; int ret; if (vb2_is_busy(&fimc->vb_queue)) return -EBUSY; ret = fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, &fmt); if (ret < 0) return ret; frame->fmt = fmt; fimc->payload[0] = max((pixm->width * pixm->height * fmt->depth[0]) / 8, pixm->plane_fmt[0].sizeimage); frame->f_width = pixm->width; frame->f_height = pixm->height; return 0; } static int fimc_pipeline_validate(struct fimc_lite *fimc) { struct v4l2_subdev *sd = &fimc->subdev; struct v4l2_subdev_format sink_fmt, src_fmt; struct media_pad *pad; int ret; while (1) { /* Retrieve format at the sink pad */ pad = &sd->entity.pads[0]; if (!(pad->flags & MEDIA_PAD_FL_SINK)) break; /* Don't call FIMC subdev operation to avoid nested locking */ if (sd == &fimc->subdev) { struct flite_frame *ff = &fimc->out_frame; sink_fmt.format.width = ff->f_width; sink_fmt.format.height = ff->f_height; sink_fmt.format.code = fimc->inp_frame.fmt->mbus_code; } else { sink_fmt.pad = pad->index; sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt); if (ret < 0 && ret != -ENOIOCTLCMD) return -EPIPE; } /* Retrieve format at the source pad */ pad = media_entity_remote_pad(pad); if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; sd = media_entity_to_v4l2_subdev(pad->entity); src_fmt.pad = pad->index; src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt); if (ret < 0 && ret != -ENOIOCTLCMD) return -EPIPE; if (src_fmt.format.width != sink_fmt.format.width || src_fmt.format.height != sink_fmt.format.height || src_fmt.format.code != sink_fmt.format.code) return -EPIPE; } return 0; } static int fimc_lite_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { struct fimc_lite *fimc = video_drvdata(file); struct media_entity *entity = &fimc->ve.vdev.entity; int ret; if (fimc_lite_active(fimc)) return -EBUSY; ret = media_pipeline_start(entity, &fimc->ve.pipe->mp); if (ret < 0) return ret; ret = fimc_pipeline_validate(fimc); if (ret < 0) goto err_p_stop; fimc->sensor = fimc_find_remote_sensor(&fimc->subdev.entity); ret = vb2_ioctl_streamon(file, priv, type); if (!ret) { fimc->streaming = true; return ret; } err_p_stop: media_pipeline_stop(entity); return 0; } static int fimc_lite_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { struct fimc_lite *fimc = video_drvdata(file); int ret; ret = vb2_ioctl_streamoff(file, priv, type); if (ret < 0) return ret; media_pipeline_stop(&fimc->ve.vdev.entity); fimc->streaming = false; return 0; } static int fimc_lite_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *reqbufs) { struct fimc_lite *fimc = video_drvdata(file); int ret; reqbufs->count = max_t(u32, FLITE_REQ_BUFS_MIN, reqbufs->count); ret = vb2_ioctl_reqbufs(file, priv, reqbufs); if (!ret) fimc->reqbufs_count = reqbufs->count; return ret; } /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */ static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b) { if (a->left < b->left || a->top < b->top) return 0; if (a->left + a->width > b->left + b->width) return 0; if (a->top + a->height > b->top + b->height) return 0; return 1; } static int fimc_lite_g_selection(struct file *file, void *fh, struct v4l2_selection *sel) { struct fimc_lite *fimc = video_drvdata(file); struct flite_frame *f = &fimc->out_frame; if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; switch (sel->target) { case V4L2_SEL_TGT_COMPOSE_BOUNDS: case V4L2_SEL_TGT_COMPOSE_DEFAULT: sel->r.left = 0; sel->r.top = 0; sel->r.width = f->f_width; sel->r.height = f->f_height; return 0; case V4L2_SEL_TGT_COMPOSE: sel->r = f->rect; return 0; } return -EINVAL; } static int fimc_lite_s_selection(struct file *file, void *fh, struct v4l2_selection *sel) { struct fimc_lite *fimc = video_drvdata(file); struct flite_frame *f = &fimc->out_frame; struct v4l2_rect rect = sel->r; unsigned long flags; if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || sel->target != V4L2_SEL_TGT_COMPOSE) return -EINVAL; fimc_lite_try_compose(fimc, &rect); if ((sel->flags & V4L2_SEL_FLAG_LE) && !enclosed_rectangle(&rect, &sel->r)) return -ERANGE; if ((sel->flags & V4L2_SEL_FLAG_GE) && !enclosed_rectangle(&sel->r, &rect)) return -ERANGE; sel->r = rect; spin_lock_irqsave(&fimc->slock, flags); f->rect = rect; set_bit(ST_FLITE_CONFIG, &fimc->state); spin_unlock_irqrestore(&fimc->slock, flags); return 0; } static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = { .vidioc_querycap = fimc_lite_querycap, .vidioc_enum_fmt_vid_cap_mplane = fimc_lite_enum_fmt_mplane, .vidioc_try_fmt_vid_cap_mplane = fimc_lite_try_fmt_mplane, .vidioc_s_fmt_vid_cap_mplane = fimc_lite_s_fmt_mplane, .vidioc_g_fmt_vid_cap_mplane = fimc_lite_g_fmt_mplane, .vidioc_g_selection = fimc_lite_g_selection, .vidioc_s_selection = fimc_lite_s_selection, .vidioc_reqbufs = fimc_lite_reqbufs, .vidioc_querybuf = vb2_ioctl_querybuf, .vidioc_prepare_buf = vb2_ioctl_prepare_buf, .vidioc_create_bufs = vb2_ioctl_create_bufs, .vidioc_qbuf = vb2_ioctl_qbuf, .vidioc_dqbuf = vb2_ioctl_dqbuf, .vidioc_streamon = fimc_lite_streamon, .vidioc_streamoff = fimc_lite_streamoff, }; /* Capture subdev media entity operations */ static int fimc_lite_link_setup(struct media_entity *entity, const struct media_pad *local, const struct media_pad *remote, u32 flags) { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct fimc_lite *fimc = v4l2_get_subdevdata(sd); int ret = 0; if (WARN_ON(fimc == NULL)) return 0; v4l2_dbg(1, debug, sd, "%s: %s --> %s, flags: 0x%x. source_id: 0x%x\n", __func__, remote->entity->name, local->entity->name, flags, fimc->source_subdev_grp_id); switch (local->index) { case FLITE_SD_PAD_SINK: if (flags & MEDIA_LNK_FL_ENABLED) { if (fimc->source_subdev_grp_id == 0) fimc->source_subdev_grp_id = sd->grp_id; else ret = -EBUSY; } else { fimc->source_subdev_grp_id = 0; fimc->sensor = NULL; } break; case FLITE_SD_PAD_SOURCE_DMA: if (!(flags & MEDIA_LNK_FL_ENABLED)) atomic_set(&fimc->out_path, FIMC_IO_NONE); else atomic_set(&fimc->out_path, FIMC_IO_DMA); break; case FLITE_SD_PAD_SOURCE_ISP: if (!(flags & MEDIA_LNK_FL_ENABLED)) atomic_set(&fimc->out_path, FIMC_IO_NONE); else atomic_set(&fimc->out_path, FIMC_IO_ISP); break; default: v4l2_err(sd, "Invalid pad index\n"); ret = -EINVAL; } mb(); return ret; } static const struct media_entity_operations fimc_lite_subdev_media_ops = { .link_setup = fimc_lite_link_setup, }; static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) { const struct fimc_fmt *fmt; fmt = fimc_lite_find_format(NULL, NULL, 0, code->index); if (!fmt) return -EINVAL; code->code = fmt->mbus_code; return 0; } static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt( struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, unsigned int pad) { if (pad != FLITE_SD_PAD_SINK) pad = FLITE_SD_PAD_SOURCE_DMA; return v4l2_subdev_get_try_format(sd, cfg, pad); } static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct fimc_lite *fimc = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *mf = &fmt->format; struct flite_frame *f = &fimc->inp_frame; if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { mf = __fimc_lite_subdev_get_try_fmt(sd, cfg, fmt->pad); fmt->format = *mf; return 0; } mutex_lock(&fimc->lock); mf->colorspace = f->fmt->colorspace; mf->code = f->fmt->mbus_code; if (fmt->pad == FLITE_SD_PAD_SINK) { /* full camera input frame size */ mf->width = f->f_width; mf->height = f->f_height; } else { /* crop size */ mf->width = f->rect.width; mf->height = f->rect.height; } mutex_unlock(&fimc->lock); return 0; } static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct fimc_lite *fimc = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *mf = &fmt->format; struct flite_frame *sink = &fimc->inp_frame; struct flite_frame *source = &fimc->out_frame; const struct fimc_fmt *ffmt; v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %dx%d\n", fmt->pad, mf->code, mf->width, mf->height); mutex_lock(&fimc->lock); if ((atomic_read(&fimc->out_path) == FIMC_IO_ISP && sd->entity.stream_count > 0) || (atomic_read(&fimc->out_path) == FIMC_IO_DMA && vb2_is_busy(&fimc->vb_queue))) { mutex_unlock(&fimc->lock); return -EBUSY; } ffmt = fimc_lite_subdev_try_fmt(fimc, cfg, fmt); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { struct v4l2_mbus_framefmt *src_fmt; mf = __fimc_lite_subdev_get_try_fmt(sd, cfg, fmt->pad); *mf = fmt->format; if (fmt->pad == FLITE_SD_PAD_SINK) { unsigned int pad = FLITE_SD_PAD_SOURCE_DMA; src_fmt = __fimc_lite_subdev_get_try_fmt(sd, cfg, pad); *src_fmt = *mf; } mutex_unlock(&fimc->lock); return 0; } if (fmt->pad == FLITE_SD_PAD_SINK) { sink->f_width = mf->width; sink->f_height = mf->height; sink->fmt = ffmt; /* Set sink crop rectangle */ sink->rect.width = mf->width; sink->rect.height = mf->height; sink->rect.left = 0; sink->rect.top = 0; /* Reset source format and crop rectangle */ source->rect = sink->rect; source->f_width = mf->width; source->f_height = mf->height; } mutex_unlock(&fimc->lock); return 0; } static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_selection *sel) { struct fimc_lite *fimc = v4l2_get_subdevdata(sd); struct flite_frame *f = &fimc->inp_frame; if ((sel->target != V4L2_SEL_TGT_CROP && sel->target != V4L2_SEL_TGT_CROP_BOUNDS) || sel->pad != FLITE_SD_PAD_SINK) return -EINVAL; if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { sel->r = *v4l2_subdev_get_try_crop(sd, cfg, sel->pad); return 0; } mutex_lock(&fimc->lock); if (sel->target == V4L2_SEL_TGT_CROP) { sel->r = f->rect; } else { sel->r.left = 0; sel->r.top = 0; sel->r.width = f->f_width; sel->r.height = f->f_height; } mutex_unlock(&fimc->lock); v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n", __func__, f->rect.left, f->rect.top, f->rect.width, f->rect.height, f->f_width, f->f_height); return 0; } static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_selection *sel) { struct fimc_lite *fimc = v4l2_get_subdevdata(sd); struct flite_frame *f = &fimc->inp_frame; int ret = 0; if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != FLITE_SD_PAD_SINK) return -EINVAL; mutex_lock(&fimc->lock); fimc_lite_try_crop(fimc, &sel->r); if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { *v4l2_subdev_get_try_crop(sd, cfg, sel->pad) = sel->r; } else { unsigned long flags; spin_lock_irqsave(&fimc->slock, flags); f->rect = sel->r; /* Same crop rectangle on the source pad */ fimc->out_frame.rect = sel->r; set_bit(ST_FLITE_CONFIG, &fimc->state); spin_unlock_irqrestore(&fimc->slock, flags); } mutex_unlock(&fimc->lock); v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n", __func__, f->rect.left, f->rect.top, f->rect.width, f->rect.height, f->f_width, f->f_height); return ret; } static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on) { struct fimc_lite *fimc = v4l2_get_subdevdata(sd); unsigned long flags; int ret; /* * Find sensor subdev linked to FIMC-LITE directly or through * MIPI-CSIS. This is required for configuration where FIMC-LITE * is used as a subdev only and feeds data internally to FIMC-IS. * The pipeline links are protected through entity.stream_count * so there is no need to take the media graph mutex here. */ fimc->sensor = fimc_find_remote_sensor(&sd->entity); if (atomic_read(&fimc->out_path) != FIMC_IO_ISP) return -ENOIOCTLCMD; mutex_lock(&fimc->lock); if (on) { flite_hw_reset(fimc); ret = fimc_lite_hw_init(fimc, true); if (!ret) { spin_lock_irqsave(&fimc->slock, flags); flite_hw_capture_start(fimc); spin_unlock_irqrestore(&fimc->slock, flags); } } else { set_bit(ST_FLITE_OFF, &fimc->state); spin_lock_irqsave(&fimc->slock, flags); flite_hw_capture_stop(fimc); spin_unlock_irqrestore(&fimc->slock, flags); ret = wait_event_timeout(fimc->irq_queue, !test_bit(ST_FLITE_OFF, &fimc->state), msecs_to_jiffies(200)); if (ret == 0) v4l2_err(sd, "s_stream(0) timeout\n"); clear_bit(ST_FLITE_RUN, &fimc->state); } mutex_unlock(&fimc->lock); return ret; } static int fimc_lite_log_status(struct v4l2_subdev *sd) { struct fimc_lite *fimc = v4l2_get_subdevdata(sd); flite_hw_dump_regs(fimc, __func__); return 0; } static int fimc_lite_subdev_registered(struct v4l2_subdev *sd) { struct fimc_lite *fimc = v4l2_get_subdevdata(sd); struct vb2_queue *q = &fimc->vb_queue; struct video_device *vfd = &fimc->ve.vdev; int ret; memset(vfd, 0, sizeof(*vfd)); atomic_set(&fimc->out_path, FIMC_IO_DMA); snprintf(vfd->name, sizeof(vfd->name), "fimc-lite.%d.capture", fimc->index); vfd->fops = &fimc_lite_fops; vfd->ioctl_ops = &fimc_lite_ioctl_ops; vfd->v4l2_dev = sd->v4l2_dev; vfd->minor = -1; vfd->release = video_device_release_empty; vfd->queue = q; fimc->reqbufs_count = 0; INIT_LIST_HEAD(&fimc->pending_buf_q); INIT_LIST_HEAD(&fimc->active_buf_q); memset(q, 0, sizeof(*q)); q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; q->io_modes = VB2_MMAP | VB2_USERPTR; q->ops = &fimc_lite_qops; q->mem_ops = &vb2_dma_contig_memops; q->buf_struct_size = sizeof(struct flite_buffer); q->drv_priv = fimc; q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->lock = &fimc->lock; q->dev = &fimc->pdev->dev; ret = vb2_queue_init(q); if (ret < 0) return ret; fimc->vd_pad.flags = MEDIA_PAD_FL_SINK; ret = media_entity_pads_init(&vfd->entity, 1, &fimc->vd_pad); if (ret < 0) return ret; video_set_drvdata(vfd, fimc); fimc->ve.pipe = v4l2_get_subdev_hostdata(sd); ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); if (ret < 0) { media_entity_cleanup(&vfd->entity); fimc->ve.pipe = NULL; return ret; } v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n", vfd->name, video_device_node_name(vfd)); return 0; } static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd) { struct fimc_lite *fimc = v4l2_get_subdevdata(sd); if (fimc == NULL) return; mutex_lock(&fimc->lock); if (video_is_registered(&fimc->ve.vdev)) { video_unregister_device(&fimc->ve.vdev); media_entity_cleanup(&fimc->ve.vdev.entity); fimc->ve.pipe = NULL; } mutex_unlock(&fimc->lock); } static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = { .registered = fimc_lite_subdev_registered, .unregistered = fimc_lite_subdev_unregistered, }; static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = { .enum_mbus_code = fimc_lite_subdev_enum_mbus_code, .get_selection = fimc_lite_subdev_get_selection, .set_selection = fimc_lite_subdev_set_selection, .get_fmt = fimc_lite_subdev_get_fmt, .set_fmt = fimc_lite_subdev_set_fmt, }; static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = { .s_stream = fimc_lite_subdev_s_stream, }; static const struct v4l2_subdev_core_ops fimc_lite_core_ops = { .log_status = fimc_lite_log_status, }; static const struct v4l2_subdev_ops fimc_lite_subdev_ops = { .core = &fimc_lite_core_ops, .video = &fimc_lite_subdev_video_ops, .pad = &fimc_lite_subdev_pad_ops, }; static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl) { struct fimc_lite *fimc = container_of(ctrl->handler, struct fimc_lite, ctrl_handler); set_bit(ST_FLITE_CONFIG, &fimc->state); return 0; } static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = { .s_ctrl = fimc_lite_s_ctrl, }; static const struct v4l2_ctrl_config fimc_lite_ctrl = { .ops = &fimc_lite_ctrl_ops, .id = V4L2_CTRL_CLASS_USER | 0x1001, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Test Pattern 640x480", .step = 1, }; static void fimc_lite_set_default_config(struct fimc_lite *fimc) { struct flite_frame *sink = &fimc->inp_frame; struct flite_frame *source = &fimc->out_frame; sink->fmt = &fimc_lite_formats[0]; sink->f_width = FLITE_DEFAULT_WIDTH; sink->f_height = FLITE_DEFAULT_HEIGHT; sink->rect.width = FLITE_DEFAULT_WIDTH; sink->rect.height = FLITE_DEFAULT_HEIGHT; sink->rect.left = 0; sink->rect.top = 0; *source = *sink; } static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc) { struct v4l2_ctrl_handler *handler = &fimc->ctrl_handler; struct v4l2_subdev *sd = &fimc->subdev; int ret; v4l2_subdev_init(sd, &fimc_lite_subdev_ops); sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index); fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK; fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE; fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_pads_init(&sd->entity, FLITE_SD_PADS_NUM, fimc->subdev_pads); if (ret) return ret; v4l2_ctrl_handler_init(handler, 1); fimc->test_pattern = v4l2_ctrl_new_custom(handler, &fimc_lite_ctrl, NULL); if (handler->error) { media_entity_cleanup(&sd->entity); return handler->error; } sd->ctrl_handler = handler; sd->internal_ops = &fimc_lite_subdev_internal_ops; sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER; sd->entity.ops = &fimc_lite_subdev_media_ops; sd->owner = THIS_MODULE; v4l2_set_subdevdata(sd, fimc); return 0; } static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc) { struct v4l2_subdev *sd = &fimc->subdev; v4l2_device_unregister_subdev(sd); media_entity_cleanup(&sd->entity); v4l2_ctrl_handler_free(&fimc->ctrl_handler); v4l2_set_subdevdata(sd, NULL); } static void fimc_lite_clk_put(struct fimc_lite *fimc) { if (IS_ERR(fimc->clock)) return; clk_put(fimc->clock); fimc->clock = ERR_PTR(-EINVAL); } static int fimc_lite_clk_get(struct fimc_lite *fimc) { fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME); return PTR_ERR_OR_ZERO(fimc->clock); } static const struct of_device_id flite_of_match[]; static int fimc_lite_probe(struct platform_device *pdev) { struct flite_drvdata *drv_data = NULL; struct device *dev = &pdev->dev; const struct of_device_id *of_id; struct fimc_lite *fimc; struct resource *res; int ret; if (!dev->of_node) return -ENODEV; fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL); if (!fimc) return -ENOMEM; of_id = of_match_node(flite_of_match, dev->of_node); if (of_id) drv_data = (struct flite_drvdata *)of_id->data; fimc->index = of_alias_get_id(dev->of_node, "fimc-lite"); if (!drv_data || fimc->index >= drv_data->num_instances || fimc->index < 0) { dev_err(dev, "Wrong %pOF node alias\n", dev->of_node); return -EINVAL; } fimc->dd = drv_data; fimc->pdev = pdev; init_waitqueue_head(&fimc->irq_queue); spin_lock_init(&fimc->slock); mutex_init(&fimc->lock); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); fimc->regs = devm_ioremap_resource(dev, res); if (IS_ERR(fimc->regs)) return PTR_ERR(fimc->regs); res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (res == NULL) { dev_err(dev, "Failed to get IRQ resource\n"); return -ENXIO; } ret = fimc_lite_clk_get(fimc); if (ret) return ret; ret = devm_request_irq(dev, res->start, flite_irq_handler, 0, dev_name(dev), fimc); if (ret) { dev_err(dev, "Failed to install irq (%d)\n", ret); goto err_clk_put; } /* The video node will be created within the subdev's registered() op */ ret = fimc_lite_create_capture_subdev(fimc); if (ret) goto err_clk_put; platform_set_drvdata(pdev, fimc); pm_runtime_enable(dev); if (!pm_runtime_enabled(dev)) { ret = clk_prepare_enable(fimc->clock); if (ret < 0) goto err_sd; } vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32)); fimc_lite_set_default_config(fimc); dev_dbg(dev, "FIMC-LITE.%d registered successfully\n", fimc->index); return 0; err_sd: fimc_lite_unregister_capture_subdev(fimc); err_clk_put: fimc_lite_clk_put(fimc); return ret; } #ifdef CONFIG_PM static int fimc_lite_runtime_resume(struct device *dev) { struct fimc_lite *fimc = dev_get_drvdata(dev); clk_prepare_enable(fimc->clock); return 0; } static int fimc_lite_runtime_suspend(struct device *dev) { struct fimc_lite *fimc = dev_get_drvdata(dev); clk_disable_unprepare(fimc->clock); return 0; } #endif #ifdef CONFIG_PM_SLEEP static int fimc_lite_resume(struct device *dev) { struct fimc_lite *fimc = dev_get_drvdata(dev); struct flite_buffer *buf; unsigned long flags; int i; spin_lock_irqsave(&fimc->slock, flags); if (!test_and_clear_bit(ST_LPM, &fimc->state) || !test_bit(ST_FLITE_IN_USE, &fimc->state)) { spin_unlock_irqrestore(&fimc->slock, flags); return 0; } flite_hw_reset(fimc); spin_unlock_irqrestore(&fimc->slock, flags); if (!test_and_clear_bit(ST_FLITE_SUSPENDED, &fimc->state)) return 0; INIT_LIST_HEAD(&fimc->active_buf_q); fimc_pipeline_call(&fimc->ve, open, &fimc->ve.vdev.entity, false); fimc_lite_hw_init(fimc, atomic_read(&fimc->out_path) == FIMC_IO_ISP); clear_bit(ST_FLITE_SUSPENDED, &fimc->state); for (i = 0; i < fimc->reqbufs_count; i++) { if (list_empty(&fimc->pending_buf_q)) break; buf = fimc_lite_pending_queue_pop(fimc); buffer_queue(&buf->vb.vb2_buf); } return 0; } static int fimc_lite_suspend(struct device *dev) { struct fimc_lite *fimc = dev_get_drvdata(dev); bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state); int ret; if (test_and_set_bit(ST_LPM, &fimc->state)) return 0; ret = fimc_lite_stop_capture(fimc, suspend); if (ret < 0 || !fimc_lite_active(fimc)) return ret; return fimc_pipeline_call(&fimc->ve, close); } #endif /* CONFIG_PM_SLEEP */ static int fimc_lite_remove(struct platform_device *pdev) { struct fimc_lite *fimc = platform_get_drvdata(pdev); struct device *dev = &pdev->dev; pm_runtime_disable(dev); pm_runtime_set_suspended(dev); fimc_lite_unregister_capture_subdev(fimc); vb2_dma_contig_clear_max_seg_size(dev); fimc_lite_clk_put(fimc); dev_info(dev, "Driver unloaded\n"); return 0; } static const struct dev_pm_ops fimc_lite_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(fimc_lite_suspend, fimc_lite_resume) SET_RUNTIME_PM_OPS(fimc_lite_runtime_suspend, fimc_lite_runtime_resume, NULL) }; /* EXYNOS4412 */ static struct flite_drvdata fimc_lite_drvdata_exynos4 = { .max_width = 8192, .max_height = 8192, .out_width_align = 8, .win_hor_offs_align = 2, .out_hor_offs_align = 8, .max_dma_bufs = 1, .num_instances = 2, }; /* EXYNOS5250 */ static struct flite_drvdata fimc_lite_drvdata_exynos5 = { .max_width = 8192, .max_height = 8192, .out_width_align = 8, .win_hor_offs_align = 2, .out_hor_offs_align = 8, .max_dma_bufs = 32, .num_instances = 3, }; static const struct of_device_id flite_of_match[] = { { .compatible = "samsung,exynos4212-fimc-lite", .data = &fimc_lite_drvdata_exynos4, }, { .compatible = "samsung,exynos5250-fimc-lite", .data = &fimc_lite_drvdata_exynos5, }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, flite_of_match); static struct platform_driver fimc_lite_driver = { .probe = fimc_lite_probe, .remove = fimc_lite_remove, .driver = { .of_match_table = flite_of_match, .name = FIMC_LITE_DRV_NAME, .pm = &fimc_lite_pm_ops, } }; module_platform_driver(fimc_lite_driver); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME);
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