diff options
Diffstat (limited to 'drivers/media/platform/rcar-vin/rcar-v4l2.c')
| -rw-r--r-- | drivers/media/platform/rcar-vin/rcar-v4l2.c | 1037 |
1 files changed, 1037 insertions, 0 deletions
diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c new file mode 100644 index 000000000..0bbe6f9f9 --- /dev/null +++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c @@ -0,0 +1,1037 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for Renesas R-Car VIN + * + * Copyright (C) 2016 Renesas Electronics Corp. + * Copyright (C) 2011-2013 Renesas Solutions Corp. + * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com> + * Copyright (C) 2008 Magnus Damm + * + * Based on the soc-camera rcar_vin driver + */ + +#include <linux/pm_runtime.h> + +#include <media/v4l2-event.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-mc.h> +#include <media/v4l2-rect.h> + +#include "rcar-vin.h" + +#define RVIN_DEFAULT_FORMAT V4L2_PIX_FMT_YUYV +#define RVIN_DEFAULT_WIDTH 800 +#define RVIN_DEFAULT_HEIGHT 600 +#define RVIN_DEFAULT_FIELD V4L2_FIELD_NONE +#define RVIN_DEFAULT_COLORSPACE V4L2_COLORSPACE_SRGB + +/* ----------------------------------------------------------------------------- + * Format Conversions + */ + +static const struct rvin_video_format rvin_formats[] = { + { + .fourcc = V4L2_PIX_FMT_NV12, + .bpp = 1, + }, + { + .fourcc = V4L2_PIX_FMT_NV16, + .bpp = 1, + }, + { + .fourcc = V4L2_PIX_FMT_YUYV, + .bpp = 2, + }, + { + .fourcc = V4L2_PIX_FMT_UYVY, + .bpp = 2, + }, + { + .fourcc = V4L2_PIX_FMT_RGB565, + .bpp = 2, + }, + { + .fourcc = V4L2_PIX_FMT_XRGB555, + .bpp = 2, + }, + { + .fourcc = V4L2_PIX_FMT_XBGR32, + .bpp = 4, + }, + { + .fourcc = V4L2_PIX_FMT_ARGB555, + .bpp = 2, + }, + { + .fourcc = V4L2_PIX_FMT_ABGR32, + .bpp = 4, + }, + { + .fourcc = V4L2_PIX_FMT_SBGGR8, + .bpp = 1, + }, + { + .fourcc = V4L2_PIX_FMT_SGBRG8, + .bpp = 1, + }, + { + .fourcc = V4L2_PIX_FMT_SGRBG8, + .bpp = 1, + }, + { + .fourcc = V4L2_PIX_FMT_SRGGB8, + .bpp = 1, + }, +}; + +const struct rvin_video_format *rvin_format_from_pixel(struct rvin_dev *vin, + u32 pixelformat) +{ + int i; + + switch (pixelformat) { + case V4L2_PIX_FMT_XBGR32: + if (vin->info->model == RCAR_M1) + return NULL; + break; + case V4L2_PIX_FMT_NV12: + /* + * If NV12 is supported it's only supported on channels 0, 1, 4, + * 5, 8, 9, 12 and 13. + */ + if (!vin->info->nv12 || !(BIT(vin->id) & 0x3333)) + return NULL; + break; + default: + break; + } + + for (i = 0; i < ARRAY_SIZE(rvin_formats); i++) + if (rvin_formats[i].fourcc == pixelformat) + return rvin_formats + i; + + return NULL; +} + +static u32 rvin_format_bytesperline(struct rvin_dev *vin, + struct v4l2_pix_format *pix) +{ + const struct rvin_video_format *fmt; + u32 align; + + fmt = rvin_format_from_pixel(vin, pix->pixelformat); + + if (WARN_ON(!fmt)) + return -EINVAL; + + switch (pix->pixelformat) { + case V4L2_PIX_FMT_NV12: + case V4L2_PIX_FMT_NV16: + align = 0x20; + break; + default: + align = 0x10; + break; + } + + if (V4L2_FIELD_IS_SEQUENTIAL(pix->field)) + align = 0x80; + + return ALIGN(pix->width, align) * fmt->bpp; +} + +static u32 rvin_format_sizeimage(struct v4l2_pix_format *pix) +{ + switch (pix->pixelformat) { + case V4L2_PIX_FMT_NV12: + return pix->bytesperline * pix->height * 3 / 2; + case V4L2_PIX_FMT_NV16: + return pix->bytesperline * pix->height * 2; + default: + return pix->bytesperline * pix->height; + } +} + +static void rvin_format_align(struct rvin_dev *vin, struct v4l2_pix_format *pix) +{ + u32 walign; + + if (!rvin_format_from_pixel(vin, pix->pixelformat)) + pix->pixelformat = RVIN_DEFAULT_FORMAT; + + switch (pix->field) { + case V4L2_FIELD_TOP: + case V4L2_FIELD_BOTTOM: + case V4L2_FIELD_NONE: + case V4L2_FIELD_INTERLACED_TB: + case V4L2_FIELD_INTERLACED_BT: + case V4L2_FIELD_INTERLACED: + case V4L2_FIELD_ALTERNATE: + case V4L2_FIELD_SEQ_TB: + case V4L2_FIELD_SEQ_BT: + break; + default: + pix->field = RVIN_DEFAULT_FIELD; + break; + } + + /* Hardware limits width alignment based on format. */ + switch (pix->pixelformat) { + /* Multiple of 32 (2^5) for NV12/16. */ + case V4L2_PIX_FMT_NV12: + case V4L2_PIX_FMT_NV16: + walign = 5; + break; + /* Multiple of 2 (2^1) for YUV. */ + case V4L2_PIX_FMT_YUYV: + case V4L2_PIX_FMT_UYVY: + walign = 1; + break; + /* No multiple for RGB. */ + default: + walign = 0; + break; + } + + /* Limit to VIN capabilities */ + v4l_bound_align_image(&pix->width, 5, vin->info->max_width, walign, + &pix->height, 2, vin->info->max_height, 0, 0); + + pix->bytesperline = rvin_format_bytesperline(vin, pix); + pix->sizeimage = rvin_format_sizeimage(pix); + + vin_dbg(vin, "Format %ux%u bpl: %u size: %u\n", + pix->width, pix->height, pix->bytesperline, pix->sizeimage); +} + +/* ----------------------------------------------------------------------------- + * V4L2 + */ + +static int rvin_reset_format(struct rvin_dev *vin) +{ + struct v4l2_subdev_format fmt = { + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + .pad = vin->parallel->source_pad, + }; + int ret; + + ret = v4l2_subdev_call(vin_to_source(vin), pad, get_fmt, NULL, &fmt); + if (ret) + return ret; + + v4l2_fill_pix_format(&vin->format, &fmt.format); + + vin->src_rect.top = 0; + vin->src_rect.left = 0; + vin->src_rect.width = vin->format.width; + vin->src_rect.height = vin->format.height; + + /* Make use of the hardware interlacer by default. */ + if (vin->format.field == V4L2_FIELD_ALTERNATE) { + vin->format.field = V4L2_FIELD_INTERLACED; + vin->format.height *= 2; + } + + rvin_format_align(vin, &vin->format); + + vin->crop = vin->src_rect; + + vin->compose.top = 0; + vin->compose.left = 0; + vin->compose.width = vin->format.width; + vin->compose.height = vin->format.height; + + return 0; +} + +static int rvin_try_format(struct rvin_dev *vin, u32 which, + struct v4l2_pix_format *pix, + struct v4l2_rect *src_rect) +{ + struct v4l2_subdev *sd = vin_to_source(vin); + struct v4l2_subdev_pad_config *pad_cfg; + struct v4l2_subdev_format format = { + .which = which, + .pad = vin->parallel->source_pad, + }; + enum v4l2_field field; + u32 width, height; + int ret; + + pad_cfg = v4l2_subdev_alloc_pad_config(sd); + if (pad_cfg == NULL) + return -ENOMEM; + + if (!rvin_format_from_pixel(vin, pix->pixelformat)) + pix->pixelformat = RVIN_DEFAULT_FORMAT; + + v4l2_fill_mbus_format(&format.format, pix, vin->mbus_code); + + /* Allow the video device to override field and to scale */ + field = pix->field; + width = pix->width; + height = pix->height; + + ret = v4l2_subdev_call(sd, pad, set_fmt, pad_cfg, &format); + if (ret < 0 && ret != -ENOIOCTLCMD) + goto done; + ret = 0; + + v4l2_fill_pix_format(pix, &format.format); + + if (src_rect) { + src_rect->top = 0; + src_rect->left = 0; + src_rect->width = pix->width; + src_rect->height = pix->height; + } + + if (field != V4L2_FIELD_ANY) + pix->field = field; + + pix->width = width; + pix->height = height; + + rvin_format_align(vin, pix); +done: + v4l2_subdev_free_pad_config(pad_cfg); + + return ret; +} + +static int rvin_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct rvin_dev *vin = video_drvdata(file); + + strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); + strscpy(cap->card, "R_Car_VIN", sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", + dev_name(vin->dev)); + return 0; +} + +static int rvin_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct rvin_dev *vin = video_drvdata(file); + + return rvin_try_format(vin, V4L2_SUBDEV_FORMAT_TRY, &f->fmt.pix, NULL); +} + +static int rvin_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_rect fmt_rect, src_rect; + int ret; + + if (vb2_is_busy(&vin->queue)) + return -EBUSY; + + ret = rvin_try_format(vin, V4L2_SUBDEV_FORMAT_ACTIVE, &f->fmt.pix, + &src_rect); + if (ret) + return ret; + + vin->format = f->fmt.pix; + + fmt_rect.top = 0; + fmt_rect.left = 0; + fmt_rect.width = vin->format.width; + fmt_rect.height = vin->format.height; + + v4l2_rect_map_inside(&vin->crop, &src_rect); + v4l2_rect_map_inside(&vin->compose, &fmt_rect); + vin->src_rect = src_rect; + + return 0; +} + +static int rvin_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct rvin_dev *vin = video_drvdata(file); + + f->fmt.pix = vin->format; + + return 0; +} + +static int rvin_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct rvin_dev *vin = video_drvdata(file); + unsigned int i; + int matched; + + /* + * If mbus_code is set only enumerate supported pixel formats for that + * bus code. Converting from YCbCr to RGB and RGB to YCbCr is possible + * with VIN, so all supported YCbCr and RGB media bus codes can produce + * all of the related pixel formats. If mbus_code is not set enumerate + * all possible pixelformats. + * + * TODO: Once raw MEDIA_BUS_FMT_SRGGB12_1X12 format is added to the + * driver this needs to be extended so raw media bus code only result in + * raw pixel format. + */ + switch (f->mbus_code) { + case 0: + case MEDIA_BUS_FMT_YUYV8_1X16: + case MEDIA_BUS_FMT_UYVY8_1X16: + case MEDIA_BUS_FMT_UYVY8_2X8: + case MEDIA_BUS_FMT_UYVY10_2X10: + case MEDIA_BUS_FMT_RGB888_1X24: + break; + case MEDIA_BUS_FMT_SBGGR8_1X8: + if (f->index) + return -EINVAL; + f->pixelformat = V4L2_PIX_FMT_SBGGR8; + return 0; + case MEDIA_BUS_FMT_SGBRG8_1X8: + if (f->index) + return -EINVAL; + f->pixelformat = V4L2_PIX_FMT_SGBRG8; + return 0; + case MEDIA_BUS_FMT_SGRBG8_1X8: + if (f->index) + return -EINVAL; + f->pixelformat = V4L2_PIX_FMT_SGRBG8; + return 0; + case MEDIA_BUS_FMT_SRGGB8_1X8: + if (f->index) + return -EINVAL; + f->pixelformat = V4L2_PIX_FMT_SRGGB8; + return 0; + default: + return -EINVAL; + } + + matched = -1; + for (i = 0; i < ARRAY_SIZE(rvin_formats); i++) { + if (rvin_format_from_pixel(vin, rvin_formats[i].fourcc)) + matched++; + + if (matched == f->index) { + f->pixelformat = rvin_formats[i].fourcc; + return 0; + } + } + + return -EINVAL; +} + +static int rvin_g_selection(struct file *file, void *fh, + struct v4l2_selection *s) +{ + struct rvin_dev *vin = video_drvdata(file); + + if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + switch (s->target) { + case V4L2_SEL_TGT_CROP_BOUNDS: + case V4L2_SEL_TGT_CROP_DEFAULT: + s->r.left = s->r.top = 0; + s->r.width = vin->src_rect.width; + s->r.height = vin->src_rect.height; + break; + case V4L2_SEL_TGT_CROP: + s->r = vin->crop; + break; + case V4L2_SEL_TGT_COMPOSE_BOUNDS: + case V4L2_SEL_TGT_COMPOSE_DEFAULT: + s->r.left = s->r.top = 0; + s->r.width = vin->format.width; + s->r.height = vin->format.height; + break; + case V4L2_SEL_TGT_COMPOSE: + s->r = vin->compose; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int rvin_s_selection(struct file *file, void *fh, + struct v4l2_selection *s) +{ + struct rvin_dev *vin = video_drvdata(file); + const struct rvin_video_format *fmt; + struct v4l2_rect r = s->r; + struct v4l2_rect max_rect; + struct v4l2_rect min_rect = { + .width = 6, + .height = 2, + }; + + if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + v4l2_rect_set_min_size(&r, &min_rect); + + switch (s->target) { + case V4L2_SEL_TGT_CROP: + /* Can't crop outside of source input */ + max_rect.top = max_rect.left = 0; + max_rect.width = vin->src_rect.width; + max_rect.height = vin->src_rect.height; + v4l2_rect_map_inside(&r, &max_rect); + + v4l_bound_align_image(&r.width, 6, vin->src_rect.width, 0, + &r.height, 2, vin->src_rect.height, 0, 0); + + r.top = clamp_t(s32, r.top, 0, + vin->src_rect.height - r.height); + r.left = clamp_t(s32, r.left, 0, vin->src_rect.width - r.width); + + vin->crop = s->r = r; + + vin_dbg(vin, "Cropped %dx%d@%d:%d of %dx%d\n", + r.width, r.height, r.left, r.top, + vin->src_rect.width, vin->src_rect.height); + break; + case V4L2_SEL_TGT_COMPOSE: + /* Make sure compose rect fits inside output format */ + max_rect.top = max_rect.left = 0; + max_rect.width = vin->format.width; + max_rect.height = vin->format.height; + v4l2_rect_map_inside(&r, &max_rect); + + /* + * Composing is done by adding a offset to the buffer address, + * the HW wants this address to be aligned to HW_BUFFER_MASK. + * Make sure the top and left values meets this requirement. + */ + while ((r.top * vin->format.bytesperline) & HW_BUFFER_MASK) + r.top--; + + fmt = rvin_format_from_pixel(vin, vin->format.pixelformat); + while ((r.left * fmt->bpp) & HW_BUFFER_MASK) + r.left--; + + vin->compose = s->r = r; + + vin_dbg(vin, "Compose %dx%d@%d:%d in %dx%d\n", + r.width, r.height, r.left, r.top, + vin->format.width, vin->format.height); + break; + default: + return -EINVAL; + } + + /* HW supports modifying configuration while running */ + rvin_crop_scale_comp(vin); + + return 0; +} + +static int rvin_g_pixelaspect(struct file *file, void *priv, + int type, struct v4l2_fract *f) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_subdev *sd = vin_to_source(vin); + + if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + return v4l2_subdev_call(sd, video, g_pixelaspect, f); +} + +static int rvin_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_subdev *sd = vin_to_source(vin); + int ret; + + if (i->index != 0) + return -EINVAL; + + ret = v4l2_subdev_call(sd, video, g_input_status, &i->status); + if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) + return ret; + + i->type = V4L2_INPUT_TYPE_CAMERA; + + if (v4l2_subdev_has_op(sd, pad, dv_timings_cap)) { + i->capabilities = V4L2_IN_CAP_DV_TIMINGS; + i->std = 0; + } else { + i->capabilities = V4L2_IN_CAP_STD; + i->std = vin->vdev.tvnorms; + } + + strscpy(i->name, "Camera", sizeof(i->name)); + + return 0; +} + +static int rvin_g_input(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int rvin_s_input(struct file *file, void *priv, unsigned int i) +{ + if (i > 0) + return -EINVAL; + return 0; +} + +static int rvin_querystd(struct file *file, void *priv, v4l2_std_id *a) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_subdev *sd = vin_to_source(vin); + + return v4l2_subdev_call(sd, video, querystd, a); +} + +static int rvin_s_std(struct file *file, void *priv, v4l2_std_id a) +{ + struct rvin_dev *vin = video_drvdata(file); + int ret; + + ret = v4l2_subdev_call(vin_to_source(vin), video, s_std, a); + if (ret < 0) + return ret; + + vin->std = a; + + /* Changing the standard will change the width/height */ + return rvin_reset_format(vin); +} + +static int rvin_g_std(struct file *file, void *priv, v4l2_std_id *a) +{ + struct rvin_dev *vin = video_drvdata(file); + + if (v4l2_subdev_has_op(vin_to_source(vin), pad, dv_timings_cap)) + return -ENOIOCTLCMD; + + *a = vin->std; + + return 0; +} + +static int rvin_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_SOURCE_CHANGE: + return v4l2_event_subscribe(fh, sub, 4, NULL); + } + return v4l2_ctrl_subscribe_event(fh, sub); +} + +static int rvin_enum_dv_timings(struct file *file, void *priv_fh, + struct v4l2_enum_dv_timings *timings) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_subdev *sd = vin_to_source(vin); + int ret; + + if (timings->pad) + return -EINVAL; + + timings->pad = vin->parallel->sink_pad; + + ret = v4l2_subdev_call(sd, pad, enum_dv_timings, timings); + + timings->pad = 0; + + return ret; +} + +static int rvin_s_dv_timings(struct file *file, void *priv_fh, + struct v4l2_dv_timings *timings) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_subdev *sd = vin_to_source(vin); + int ret; + + ret = v4l2_subdev_call(sd, video, s_dv_timings, timings); + if (ret) + return ret; + + /* Changing the timings will change the width/height */ + return rvin_reset_format(vin); +} + +static int rvin_g_dv_timings(struct file *file, void *priv_fh, + struct v4l2_dv_timings *timings) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_subdev *sd = vin_to_source(vin); + + return v4l2_subdev_call(sd, video, g_dv_timings, timings); +} + +static int rvin_query_dv_timings(struct file *file, void *priv_fh, + struct v4l2_dv_timings *timings) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_subdev *sd = vin_to_source(vin); + + return v4l2_subdev_call(sd, video, query_dv_timings, timings); +} + +static int rvin_dv_timings_cap(struct file *file, void *priv_fh, + struct v4l2_dv_timings_cap *cap) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_subdev *sd = vin_to_source(vin); + int ret; + + if (cap->pad) + return -EINVAL; + + cap->pad = vin->parallel->sink_pad; + + ret = v4l2_subdev_call(sd, pad, dv_timings_cap, cap); + + cap->pad = 0; + + return ret; +} + +static int rvin_g_edid(struct file *file, void *fh, struct v4l2_edid *edid) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_subdev *sd = vin_to_source(vin); + int ret; + + if (edid->pad) + return -EINVAL; + + edid->pad = vin->parallel->sink_pad; + + ret = v4l2_subdev_call(sd, pad, get_edid, edid); + + edid->pad = 0; + + return ret; +} + +static int rvin_s_edid(struct file *file, void *fh, struct v4l2_edid *edid) +{ + struct rvin_dev *vin = video_drvdata(file); + struct v4l2_subdev *sd = vin_to_source(vin); + int ret; + + if (edid->pad) + return -EINVAL; + + edid->pad = vin->parallel->sink_pad; + + ret = v4l2_subdev_call(sd, pad, set_edid, edid); + + edid->pad = 0; + + return ret; +} + +static const struct v4l2_ioctl_ops rvin_ioctl_ops = { + .vidioc_querycap = rvin_querycap, + .vidioc_try_fmt_vid_cap = rvin_try_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = rvin_g_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = rvin_s_fmt_vid_cap, + .vidioc_enum_fmt_vid_cap = rvin_enum_fmt_vid_cap, + + .vidioc_g_selection = rvin_g_selection, + .vidioc_s_selection = rvin_s_selection, + + .vidioc_g_pixelaspect = rvin_g_pixelaspect, + + .vidioc_enum_input = rvin_enum_input, + .vidioc_g_input = rvin_g_input, + .vidioc_s_input = rvin_s_input, + + .vidioc_dv_timings_cap = rvin_dv_timings_cap, + .vidioc_enum_dv_timings = rvin_enum_dv_timings, + .vidioc_g_dv_timings = rvin_g_dv_timings, + .vidioc_s_dv_timings = rvin_s_dv_timings, + .vidioc_query_dv_timings = rvin_query_dv_timings, + + .vidioc_g_edid = rvin_g_edid, + .vidioc_s_edid = rvin_s_edid, + + .vidioc_querystd = rvin_querystd, + .vidioc_g_std = rvin_g_std, + .vidioc_s_std = rvin_s_std, + + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = rvin_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +/* ----------------------------------------------------------------------------- + * V4L2 Media Controller + */ + +static void rvin_mc_try_format(struct rvin_dev *vin, + struct v4l2_pix_format *pix) +{ + /* + * The V4L2 specification clearly documents the colorspace fields + * as being set by drivers for capture devices. Using the values + * supplied by userspace thus wouldn't comply with the API. Until + * the API is updated force fixed values. + */ + pix->colorspace = RVIN_DEFAULT_COLORSPACE; + pix->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix->colorspace); + pix->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix->colorspace); + pix->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, pix->colorspace, + pix->ycbcr_enc); + + rvin_format_align(vin, pix); +} + +static int rvin_mc_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct rvin_dev *vin = video_drvdata(file); + + rvin_mc_try_format(vin, &f->fmt.pix); + + return 0; +} + +static int rvin_mc_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct rvin_dev *vin = video_drvdata(file); + + if (vb2_is_busy(&vin->queue)) + return -EBUSY; + + rvin_mc_try_format(vin, &f->fmt.pix); + + vin->format = f->fmt.pix; + + vin->crop.top = 0; + vin->crop.left = 0; + vin->crop.width = vin->format.width; + vin->crop.height = vin->format.height; + vin->compose = vin->crop; + + return 0; +} + +static const struct v4l2_ioctl_ops rvin_mc_ioctl_ops = { + .vidioc_querycap = rvin_querycap, + .vidioc_try_fmt_vid_cap = rvin_mc_try_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = rvin_g_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = rvin_mc_s_fmt_vid_cap, + .vidioc_enum_fmt_vid_cap = rvin_enum_fmt_vid_cap, + + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = rvin_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +/* ----------------------------------------------------------------------------- + * File Operations + */ + +static int rvin_power_parallel(struct rvin_dev *vin, bool on) +{ + struct v4l2_subdev *sd = vin_to_source(vin); + int power = on ? 1 : 0; + int ret; + + ret = v4l2_subdev_call(sd, core, s_power, power); + if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) + return ret; + + return 0; +} + +static int rvin_open(struct file *file) +{ + struct rvin_dev *vin = video_drvdata(file); + int ret; + + ret = pm_runtime_get_sync(vin->dev); + if (ret < 0) { + pm_runtime_put_noidle(vin->dev); + return ret; + } + + ret = mutex_lock_interruptible(&vin->lock); + if (ret) + goto err_pm; + + file->private_data = vin; + + ret = v4l2_fh_open(file); + if (ret) + goto err_unlock; + + if (vin->info->use_mc) + ret = v4l2_pipeline_pm_get(&vin->vdev.entity); + else if (v4l2_fh_is_singular_file(file)) + ret = rvin_power_parallel(vin, true); + + if (ret < 0) + goto err_open; + + ret = v4l2_ctrl_handler_setup(&vin->ctrl_handler); + if (ret) + goto err_power; + + mutex_unlock(&vin->lock); + + return 0; +err_power: + if (vin->info->use_mc) + v4l2_pipeline_pm_put(&vin->vdev.entity); + else if (v4l2_fh_is_singular_file(file)) + rvin_power_parallel(vin, false); +err_open: + v4l2_fh_release(file); +err_unlock: + mutex_unlock(&vin->lock); +err_pm: + pm_runtime_put(vin->dev); + + return ret; +} + +static int rvin_release(struct file *file) +{ + struct rvin_dev *vin = video_drvdata(file); + bool fh_singular; + int ret; + + mutex_lock(&vin->lock); + + /* Save the singular status before we call the clean-up helper */ + fh_singular = v4l2_fh_is_singular_file(file); + + /* the release helper will cleanup any on-going streaming */ + ret = _vb2_fop_release(file, NULL); + + if (vin->info->use_mc) { + v4l2_pipeline_pm_put(&vin->vdev.entity); + } else { + if (fh_singular) + rvin_power_parallel(vin, false); + } + + mutex_unlock(&vin->lock); + + pm_runtime_put(vin->dev); + + return ret; +} + +static const struct v4l2_file_operations rvin_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, + .open = rvin_open, + .release = rvin_release, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, + .read = vb2_fop_read, +}; + +void rvin_v4l2_unregister(struct rvin_dev *vin) +{ + if (!video_is_registered(&vin->vdev)) + return; + + v4l2_info(&vin->v4l2_dev, "Removing %s\n", + video_device_node_name(&vin->vdev)); + + /* Checks internally if vdev have been init or not */ + video_unregister_device(&vin->vdev); +} + +static void rvin_notify(struct v4l2_subdev *sd, + unsigned int notification, void *arg) +{ + struct rvin_dev *vin = + container_of(sd->v4l2_dev, struct rvin_dev, v4l2_dev); + + switch (notification) { + case V4L2_DEVICE_NOTIFY_EVENT: + v4l2_event_queue(&vin->vdev, arg); + break; + default: + break; + } +} + +int rvin_v4l2_register(struct rvin_dev *vin) +{ + struct video_device *vdev = &vin->vdev; + int ret; + + vin->v4l2_dev.notify = rvin_notify; + + /* video node */ + vdev->v4l2_dev = &vin->v4l2_dev; + vdev->queue = &vin->queue; + snprintf(vdev->name, sizeof(vdev->name), "VIN%u output", vin->id); + vdev->release = video_device_release_empty; + vdev->lock = &vin->lock; + vdev->fops = &rvin_fops; + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | + V4L2_CAP_READWRITE; + + /* Set a default format */ + vin->format.pixelformat = RVIN_DEFAULT_FORMAT; + vin->format.width = RVIN_DEFAULT_WIDTH; + vin->format.height = RVIN_DEFAULT_HEIGHT; + vin->format.field = RVIN_DEFAULT_FIELD; + vin->format.colorspace = RVIN_DEFAULT_COLORSPACE; + + if (vin->info->use_mc) { + vdev->device_caps |= V4L2_CAP_IO_MC; + vdev->ioctl_ops = &rvin_mc_ioctl_ops; + } else { + vdev->ioctl_ops = &rvin_ioctl_ops; + rvin_reset_format(vin); + } + + rvin_format_align(vin, &vin->format); + + ret = video_register_device(&vin->vdev, VFL_TYPE_VIDEO, -1); + if (ret) { + vin_err(vin, "Failed to register video device\n"); + return ret; + } + + video_set_drvdata(&vin->vdev, vin); + + v4l2_info(&vin->v4l2_dev, "Device registered as %s\n", + video_device_node_name(&vin->vdev)); + + return ret; +} |