diff options
Diffstat (limited to 'drivers/media/platform/qcom/camss/camss-video.c')
| -rw-r--r-- | drivers/media/platform/qcom/camss/camss-video.c | 958 |
1 files changed, 958 insertions, 0 deletions
diff --git a/drivers/media/platform/qcom/camss/camss-video.c b/drivers/media/platform/qcom/camss/camss-video.c new file mode 100644 index 000000000000..c9bb0d023db4 --- /dev/null +++ b/drivers/media/platform/qcom/camss/camss-video.c @@ -0,0 +1,958 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * camss-video.c + * + * Qualcomm MSM Camera Subsystem - V4L2 device node + * + * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved. + * Copyright (C) 2015-2018 Linaro Ltd. + */ +#include <linux/slab.h> +#include <media/media-entity.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-mc.h> +#include <media/videobuf2-dma-sg.h> + +#include "camss-video.h" +#include "camss.h" + +struct fract { + u8 numerator; + u8 denominator; +}; + +/* + * struct camss_format_info - ISP media bus format information + * @code: V4L2 media bus format code + * @pixelformat: V4L2 pixel format FCC identifier + * @planes: Number of planes + * @hsub: Horizontal subsampling (for each plane) + * @vsub: Vertical subsampling (for each plane) + * @bpp: Bits per pixel when stored in memory (for each plane) + */ +struct camss_format_info { + u32 code; + u32 pixelformat; + u8 planes; + struct fract hsub[3]; + struct fract vsub[3]; + unsigned int bpp[3]; +}; + +static const struct camss_format_info formats_rdi_8x16[] = { + { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_PIX_FMT_SBGGR8, 1, + { { 1, 1 } }, { { 1, 1 } }, { 8 } }, + { MEDIA_BUS_FMT_SGBRG8_1X8, V4L2_PIX_FMT_SGBRG8, 1, + { { 1, 1 } }, { { 1, 1 } }, { 8 } }, + { MEDIA_BUS_FMT_SGRBG8_1X8, V4L2_PIX_FMT_SGRBG8, 1, + { { 1, 1 } }, { { 1, 1 } }, { 8 } }, + { MEDIA_BUS_FMT_SRGGB8_1X8, V4L2_PIX_FMT_SRGGB8, 1, + { { 1, 1 } }, { { 1, 1 } }, { 8 } }, + { MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SBGGR12_1X12, V4L2_PIX_FMT_SBGGR12P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 12 } }, + { MEDIA_BUS_FMT_SGBRG12_1X12, V4L2_PIX_FMT_SGBRG12P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 12 } }, + { MEDIA_BUS_FMT_SGRBG12_1X12, V4L2_PIX_FMT_SGRBG12P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 12 } }, + { MEDIA_BUS_FMT_SRGGB12_1X12, V4L2_PIX_FMT_SRGGB12P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 12 } }, + { MEDIA_BUS_FMT_Y10_1X10, V4L2_PIX_FMT_Y10P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, +}; + +static const struct camss_format_info formats_rdi_8x96[] = { + { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_PIX_FMT_SBGGR8, 1, + { { 1, 1 } }, { { 1, 1 } }, { 8 } }, + { MEDIA_BUS_FMT_SGBRG8_1X8, V4L2_PIX_FMT_SGBRG8, 1, + { { 1, 1 } }, { { 1, 1 } }, { 8 } }, + { MEDIA_BUS_FMT_SGRBG8_1X8, V4L2_PIX_FMT_SGRBG8, 1, + { { 1, 1 } }, { { 1, 1 } }, { 8 } }, + { MEDIA_BUS_FMT_SRGGB8_1X8, V4L2_PIX_FMT_SRGGB8, 1, + { { 1, 1 } }, { { 1, 1 } }, { 8 } }, + { MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_PIX_FMT_SBGGR10, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_SBGGR12_1X12, V4L2_PIX_FMT_SBGGR12P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 12 } }, + { MEDIA_BUS_FMT_SGBRG12_1X12, V4L2_PIX_FMT_SGBRG12P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 12 } }, + { MEDIA_BUS_FMT_SGRBG12_1X12, V4L2_PIX_FMT_SGRBG12P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 12 } }, + { MEDIA_BUS_FMT_SRGGB12_1X12, V4L2_PIX_FMT_SRGGB12P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 12 } }, + { MEDIA_BUS_FMT_SBGGR14_1X14, V4L2_PIX_FMT_SBGGR14P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 14 } }, + { MEDIA_BUS_FMT_SGBRG14_1X14, V4L2_PIX_FMT_SGBRG14P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 14 } }, + { MEDIA_BUS_FMT_SGRBG14_1X14, V4L2_PIX_FMT_SGRBG14P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 14 } }, + { MEDIA_BUS_FMT_SRGGB14_1X14, V4L2_PIX_FMT_SRGGB14P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 14 } }, + { MEDIA_BUS_FMT_Y10_1X10, V4L2_PIX_FMT_Y10P, 1, + { { 1, 1 } }, { { 1, 1 } }, { 10 } }, + { MEDIA_BUS_FMT_Y10_2X8_PADHI_LE, V4L2_PIX_FMT_Y10, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, +}; + +static const struct camss_format_info formats_pix_8x16[] = { + { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV12, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV12, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV12, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV12, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV21, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV21, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV21, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV21, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV16, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV16, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV16, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV16, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV61, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV61, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV61, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV61, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, +}; + +static const struct camss_format_info formats_pix_8x96[] = { + { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV12, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV12, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV12, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV12, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV21, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV21, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV21, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV21, 1, + { { 1, 1 } }, { { 2, 3 } }, { 8 } }, + { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV16, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV16, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV16, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV16, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV61, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV61, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV61, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV61, 1, + { { 1, 1 } }, { { 1, 2 } }, { 8 } }, + { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, + { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1, + { { 1, 1 } }, { { 1, 1 } }, { 16 } }, +}; + +/* ----------------------------------------------------------------------------- + * Helper functions + */ + +static int video_find_format(u32 code, u32 pixelformat, + const struct camss_format_info *formats, + unsigned int nformats) +{ + int i; + + for (i = 0; i < nformats; i++) { + if (formats[i].code == code && + formats[i].pixelformat == pixelformat) + return i; + } + + for (i = 0; i < nformats; i++) + if (formats[i].code == code) + return i; + + WARN_ON(1); + + return -EINVAL; +} + +/* + * video_mbus_to_pix_mp - Convert v4l2_mbus_framefmt to v4l2_pix_format_mplane + * @mbus: v4l2_mbus_framefmt format (input) + * @pix: v4l2_pix_format_mplane format (output) + * @f: a pointer to formats array element to be used for the conversion + * @alignment: bytesperline alignment value + * + * Fill the output pix structure with information from the input mbus format. + * + * Return 0 on success or a negative error code otherwise + */ +static int video_mbus_to_pix_mp(const struct v4l2_mbus_framefmt *mbus, + struct v4l2_pix_format_mplane *pix, + const struct camss_format_info *f, + unsigned int alignment) +{ + unsigned int i; + u32 bytesperline; + + memset(pix, 0, sizeof(*pix)); + v4l2_fill_pix_format_mplane(pix, mbus); + pix->pixelformat = f->pixelformat; + pix->num_planes = f->planes; + for (i = 0; i < pix->num_planes; i++) { + bytesperline = pix->width / f->hsub[i].numerator * + f->hsub[i].denominator * f->bpp[i] / 8; + bytesperline = ALIGN(bytesperline, alignment); + pix->plane_fmt[i].bytesperline = bytesperline; + pix->plane_fmt[i].sizeimage = pix->height / + f->vsub[i].numerator * f->vsub[i].denominator * + bytesperline; + } + + return 0; +} + +static struct v4l2_subdev *video_remote_subdev(struct camss_video *video, + u32 *pad) +{ + struct media_pad *remote; + + remote = media_entity_remote_pad(&video->pad); + + if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) + return NULL; + + if (pad) + *pad = remote->index; + + return media_entity_to_v4l2_subdev(remote->entity); +} + +static int video_get_subdev_format(struct camss_video *video, + struct v4l2_format *format) +{ + struct v4l2_subdev_format fmt; + struct v4l2_subdev *subdev; + u32 pad; + int ret; + + subdev = video_remote_subdev(video, &pad); + if (subdev == NULL) + return -EPIPE; + + fmt.pad = pad; + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; + + ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); + if (ret) + return ret; + + ret = video_find_format(fmt.format.code, + format->fmt.pix_mp.pixelformat, + video->formats, video->nformats); + if (ret < 0) + return ret; + + format->type = video->type; + + return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp, + &video->formats[ret], video->bpl_alignment); +} + +/* ----------------------------------------------------------------------------- + * Video queue operations + */ + +static int video_queue_setup(struct vb2_queue *q, + unsigned int *num_buffers, unsigned int *num_planes, + unsigned int sizes[], struct device *alloc_devs[]) +{ + struct camss_video *video = vb2_get_drv_priv(q); + const struct v4l2_pix_format_mplane *format = + &video->active_fmt.fmt.pix_mp; + unsigned int i; + + if (*num_planes) { + if (*num_planes != format->num_planes) + return -EINVAL; + + for (i = 0; i < *num_planes; i++) + if (sizes[i] < format->plane_fmt[i].sizeimage) + return -EINVAL; + + return 0; + } + + *num_planes = format->num_planes; + + for (i = 0; i < *num_planes; i++) + sizes[i] = format->plane_fmt[i].sizeimage; + + return 0; +} + +static int video_buf_init(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue); + struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer, + vb); + const struct v4l2_pix_format_mplane *format = + &video->active_fmt.fmt.pix_mp; + struct sg_table *sgt; + unsigned int i; + + for (i = 0; i < format->num_planes; i++) { + sgt = vb2_dma_sg_plane_desc(vb, i); + if (!sgt) + return -EFAULT; + + buffer->addr[i] = sg_dma_address(sgt->sgl); + } + + if (format->pixelformat == V4L2_PIX_FMT_NV12 || + format->pixelformat == V4L2_PIX_FMT_NV21 || + format->pixelformat == V4L2_PIX_FMT_NV16 || + format->pixelformat == V4L2_PIX_FMT_NV61) + buffer->addr[1] = buffer->addr[0] + + format->plane_fmt[0].bytesperline * + format->height; + + return 0; +} + +static int video_buf_prepare(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue); + const struct v4l2_pix_format_mplane *format = + &video->active_fmt.fmt.pix_mp; + unsigned int i; + + for (i = 0; i < format->num_planes; i++) { + if (format->plane_fmt[i].sizeimage > vb2_plane_size(vb, i)) + return -EINVAL; + + vb2_set_plane_payload(vb, i, format->plane_fmt[i].sizeimage); + } + + vbuf->field = V4L2_FIELD_NONE; + + return 0; +} + +static void video_buf_queue(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue); + struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer, + vb); + + video->ops->queue_buffer(video, buffer); +} + +static int video_check_format(struct camss_video *video) +{ + struct v4l2_pix_format_mplane *pix = &video->active_fmt.fmt.pix_mp; + struct v4l2_format format; + struct v4l2_pix_format_mplane *sd_pix = &format.fmt.pix_mp; + int ret; + + sd_pix->pixelformat = pix->pixelformat; + ret = video_get_subdev_format(video, &format); + if (ret < 0) + return ret; + + if (pix->pixelformat != sd_pix->pixelformat || + pix->height != sd_pix->height || + pix->width != sd_pix->width || + pix->num_planes != sd_pix->num_planes || + pix->field != format.fmt.pix_mp.field) + return -EPIPE; + + return 0; +} + +static int video_start_streaming(struct vb2_queue *q, unsigned int count) +{ + struct camss_video *video = vb2_get_drv_priv(q); + struct video_device *vdev = &video->vdev; + struct media_entity *entity; + struct media_pad *pad; + struct v4l2_subdev *subdev; + int ret; + + ret = media_pipeline_start(&vdev->entity, &video->pipe); + if (ret < 0) + return ret; + + ret = video_check_format(video); + if (ret < 0) + goto error; + + entity = &vdev->entity; + while (1) { + pad = &entity->pads[0]; + if (!(pad->flags & MEDIA_PAD_FL_SINK)) + break; + + pad = media_entity_remote_pad(pad); + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) + break; + + entity = pad->entity; + subdev = media_entity_to_v4l2_subdev(entity); + + ret = v4l2_subdev_call(subdev, video, s_stream, 1); + if (ret < 0 && ret != -ENOIOCTLCMD) + goto error; + } + + return 0; + +error: + media_pipeline_stop(&vdev->entity); + + video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED); + + return ret; +} + +static void video_stop_streaming(struct vb2_queue *q) +{ + struct camss_video *video = vb2_get_drv_priv(q); + struct video_device *vdev = &video->vdev; + struct media_entity *entity; + struct media_pad *pad; + struct v4l2_subdev *subdev; + + entity = &vdev->entity; + while (1) { + pad = &entity->pads[0]; + if (!(pad->flags & MEDIA_PAD_FL_SINK)) + break; + + pad = media_entity_remote_pad(pad); + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) + break; + + entity = pad->entity; + subdev = media_entity_to_v4l2_subdev(entity); + + v4l2_subdev_call(subdev, video, s_stream, 0); + } + + media_pipeline_stop(&vdev->entity); + + video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR); +} + +static const struct vb2_ops msm_video_vb2_q_ops = { + .queue_setup = video_queue_setup, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + .buf_init = video_buf_init, + .buf_prepare = video_buf_prepare, + .buf_queue = video_buf_queue, + .start_streaming = video_start_streaming, + .stop_streaming = video_stop_streaming, +}; + +/* ----------------------------------------------------------------------------- + * V4L2 ioctls + */ + +static int video_querycap(struct file *file, void *fh, + struct v4l2_capability *cap) +{ + struct camss_video *video = video_drvdata(file); + + strlcpy(cap->driver, "qcom-camss", sizeof(cap->driver)); + strlcpy(cap->card, "Qualcomm Camera Subsystem", sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", + dev_name(video->camss->dev)); + + return 0; +} + +static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f) +{ + struct camss_video *video = video_drvdata(file); + int i, j, k; + + if (f->type != video->type) + return -EINVAL; + + if (f->index >= video->nformats) + return -EINVAL; + + /* find index "i" of "k"th unique pixelformat in formats array */ + k = -1; + for (i = 0; i < video->nformats; i++) { + for (j = 0; j < i; j++) { + if (video->formats[i].pixelformat == + video->formats[j].pixelformat) + break; + } + + if (j == i) + k++; + + if (k == f->index) + break; + } + + if (k < f->index) + return -EINVAL; + + f->pixelformat = video->formats[i].pixelformat; + + return 0; +} + +static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f) +{ + struct camss_video *video = video_drvdata(file); + + *f = video->active_fmt; + + return 0; +} + +static int __video_try_fmt(struct camss_video *video, struct v4l2_format *f) +{ + struct v4l2_pix_format_mplane *pix_mp; + const struct camss_format_info *fi; + struct v4l2_plane_pix_format *p; + u32 bytesperline[3] = { 0 }; + u32 sizeimage[3] = { 0 }; + u32 width, height; + u32 bpl, lines; + int i, j; + + pix_mp = &f->fmt.pix_mp; + + if (video->line_based) + for (i = 0; i < pix_mp->num_planes && i < 3; i++) { + p = &pix_mp->plane_fmt[i]; + bytesperline[i] = clamp_t(u32, p->bytesperline, + 1, 65528); + sizeimage[i] = clamp_t(u32, p->sizeimage, + bytesperline[i], + bytesperline[i] * 4096); + } + + for (j = 0; j < video->nformats; j++) + if (pix_mp->pixelformat == video->formats[j].pixelformat) + break; + + if (j == video->nformats) + j = 0; /* default format */ + + fi = &video->formats[j]; + width = pix_mp->width; + height = pix_mp->height; + + memset(pix_mp, 0, sizeof(*pix_mp)); + + pix_mp->pixelformat = fi->pixelformat; + pix_mp->width = clamp_t(u32, width, 1, 8191); + pix_mp->height = clamp_t(u32, height, 1, 8191); + pix_mp->num_planes = fi->planes; + for (i = 0; i < pix_mp->num_planes; i++) { + bpl = pix_mp->width / fi->hsub[i].numerator * + fi->hsub[i].denominator * fi->bpp[i] / 8; + bpl = ALIGN(bpl, video->bpl_alignment); + pix_mp->plane_fmt[i].bytesperline = bpl; + pix_mp->plane_fmt[i].sizeimage = pix_mp->height / + fi->vsub[i].numerator * fi->vsub[i].denominator * bpl; + } + + pix_mp->field = V4L2_FIELD_NONE; + pix_mp->colorspace = V4L2_COLORSPACE_SRGB; + pix_mp->flags = 0; + pix_mp->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_mp->colorspace); + pix_mp->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, + pix_mp->colorspace, pix_mp->ycbcr_enc); + pix_mp->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_mp->colorspace); + + if (video->line_based) + for (i = 0; i < pix_mp->num_planes; i++) { + p = &pix_mp->plane_fmt[i]; + p->bytesperline = clamp_t(u32, p->bytesperline, + 1, 65528); + p->sizeimage = clamp_t(u32, p->sizeimage, + p->bytesperline, + p->bytesperline * 4096); + lines = p->sizeimage / p->bytesperline; + + if (p->bytesperline < bytesperline[i]) + p->bytesperline = ALIGN(bytesperline[i], 8); + + if (p->sizeimage < p->bytesperline * lines) + p->sizeimage = p->bytesperline * lines; + + if (p->sizeimage < sizeimage[i]) + p->sizeimage = sizeimage[i]; + } + + return 0; +} + +static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f) +{ + struct camss_video *video = video_drvdata(file); + + return __video_try_fmt(video, f); +} + +static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f) +{ + struct camss_video *video = video_drvdata(file); + int ret; + + if (vb2_is_busy(&video->vb2_q)) + return -EBUSY; + + ret = __video_try_fmt(video, f); + if (ret < 0) + return ret; + + video->active_fmt = *f; + + return 0; +} + +static int video_enum_input(struct file *file, void *fh, + struct v4l2_input *input) +{ + if (input->index > 0) + return -EINVAL; + + strlcpy(input->name, "camera", sizeof(input->name)); + input->type = V4L2_INPUT_TYPE_CAMERA; + + return 0; +} + +static int video_g_input(struct file *file, void *fh, unsigned int *input) +{ + *input = 0; + + return 0; +} + +static int video_s_input(struct file *file, void *fh, unsigned int input) +{ + return input == 0 ? 0 : -EINVAL; +} + +static const struct v4l2_ioctl_ops msm_vid_ioctl_ops = { + .vidioc_querycap = video_querycap, + .vidioc_enum_fmt_vid_cap_mplane = video_enum_fmt, + .vidioc_g_fmt_vid_cap_mplane = video_g_fmt, + .vidioc_s_fmt_vid_cap_mplane = video_s_fmt, + .vidioc_try_fmt_vid_cap_mplane = video_try_fmt, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_enum_input = video_enum_input, + .vidioc_g_input = video_g_input, + .vidioc_s_input = video_s_input, +}; + +/* ----------------------------------------------------------------------------- + * V4L2 file operations + */ + +static int video_open(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct camss_video *video = video_drvdata(file); + struct v4l2_fh *vfh; + int ret; + + mutex_lock(&video->lock); + + vfh = kzalloc(sizeof(*vfh), GFP_KERNEL); + if (vfh == NULL) { + ret = -ENOMEM; + goto error_alloc; + } + + v4l2_fh_init(vfh, vdev); + v4l2_fh_add(vfh); + + file->private_data = vfh; + + ret = v4l2_pipeline_pm_use(&vdev->entity, 1); + if (ret < 0) { + dev_err(video->camss->dev, "Failed to power up pipeline: %d\n", + ret); + goto error_pm_use; + } + + mutex_unlock(&video->lock); + + return 0; + +error_pm_use: + v4l2_fh_release(file); + +error_alloc: + mutex_unlock(&video->lock); + + return ret; +} + +static int video_release(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + + vb2_fop_release(file); + + v4l2_pipeline_pm_use(&vdev->entity, 0); + + file->private_data = NULL; + + return 0; +} + +static const struct v4l2_file_operations msm_vid_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, + .open = video_open, + .release = video_release, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, + .read = vb2_fop_read, +}; + +/* ----------------------------------------------------------------------------- + * CAMSS video core + */ + +static void msm_video_release(struct video_device *vdev) +{ + struct camss_video *video = video_get_drvdata(vdev); + + media_entity_cleanup(&vdev->entity); + + mutex_destroy(&video->q_lock); + mutex_destroy(&video->lock); + + if (atomic_dec_and_test(&video->camss->ref_count)) + camss_delete(video->camss); +} + +/* + * msm_video_init_format - Helper function to initialize format + * @video: struct camss_video + * + * Initialize pad format with default value. + * + * Return 0 on success or a negative error code otherwise + */ +static int msm_video_init_format(struct camss_video *video) +{ + int ret; + struct v4l2_format format = { + .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, + .fmt.pix_mp = { + .width = 1920, + .height = 1080, + .pixelformat = video->formats[0].pixelformat, + }, + }; + + ret = __video_try_fmt(video, &format); + if (ret < 0) + return ret; + + video->active_fmt = format; + + return 0; +} + +/* + * msm_video_register - Register a video device node + * @video: struct camss_video + * @v4l2_dev: V4L2 device + * @name: name to be used for the video device node + * + * Initialize and register a video device node to a V4L2 device. Also + * initialize the vb2 queue. + * + * Return 0 on success or a negative error code otherwise + */ + +int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev, + const char *name, int is_pix) +{ + struct media_pad *pad = &video->pad; + struct video_device *vdev; + struct vb2_queue *q; + int ret; + + vdev = &video->vdev; + + mutex_init(&video->q_lock); + + q = &video->vb2_q; + q->drv_priv = video; + q->mem_ops = &vb2_dma_sg_memops; + q->ops = &msm_video_vb2_q_ops; + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; + q->io_modes = VB2_DMABUF | VB2_MMAP | VB2_READ; + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->buf_struct_size = sizeof(struct camss_buffer); + q->dev = video->camss->dev; + q->lock = &video->q_lock; + ret = vb2_queue_init(q); + if (ret < 0) { + dev_err(v4l2_dev->dev, "Failed to init vb2 queue: %d\n", ret); + goto error_vb2_init; + } + + pad->flags = MEDIA_PAD_FL_SINK; + ret = media_entity_pads_init(&vdev->entity, 1, pad); + if (ret < 0) { + dev_err(v4l2_dev->dev, "Failed to init video entity: %d\n", + ret); + goto error_media_init; + } + + mutex_init(&video->lock); + + if (video->camss->version == CAMSS_8x16) { + if (is_pix) { + video->formats = formats_pix_8x16; + video->nformats = ARRAY_SIZE(formats_pix_8x16); + } else { + video->formats = formats_rdi_8x16; + video->nformats = ARRAY_SIZE(formats_rdi_8x16); + } + } else if (video->camss->version == CAMSS_8x96) { + if (is_pix) { + video->formats = formats_pix_8x96; + video->nformats = ARRAY_SIZE(formats_pix_8x96); + } else { + video->formats = formats_rdi_8x96; + video->nformats = ARRAY_SIZE(formats_rdi_8x96); + } + } else { + goto error_video_register; + } + + ret = msm_video_init_format(video); + if (ret < 0) { + dev_err(v4l2_dev->dev, "Failed to init format: %d\n", ret); + goto error_video_register; + } + + vdev->fops = &msm_vid_fops; + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING | + V4L2_CAP_READWRITE; + vdev->ioctl_ops = &msm_vid_ioctl_ops; + vdev->release = msm_video_release; + vdev->v4l2_dev = v4l2_dev; + vdev->vfl_dir = VFL_DIR_RX; + vdev->queue = &video->vb2_q; + vdev->lock = &video->lock; + strlcpy(vdev->name, name, sizeof(vdev->name)); + + ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); + if (ret < 0) { + dev_err(v4l2_dev->dev, "Failed to register video device: %d\n", + ret); + goto error_video_register; + } + + video_set_drvdata(vdev, video); + atomic_inc(&video->camss->ref_count); + + return 0; + +error_video_register: + media_entity_cleanup(&vdev->entity); + mutex_destroy(&video->lock); +error_media_init: + vb2_queue_release(&video->vb2_q); +error_vb2_init: + mutex_destroy(&video->q_lock); + + return ret; +} + +void msm_video_stop_streaming(struct camss_video *video) +{ + if (vb2_is_streaming(&video->vb2_q)) + vb2_queue_release(&video->vb2_q); +} + +void msm_video_unregister(struct camss_video *video) +{ + atomic_inc(&video->camss->ref_count); + video_unregister_device(&video->vdev); + atomic_dec(&video->camss->ref_count); +} |