This patch register the v4l2 camera for mt2712 mipicsi. Signed-off-by: Stu Hsieh <stu.hs...@mediatek.com> --- .../media/platform/mtk-mipicsi/mtk_mipicsi.c | 728 ++++++++++++++++++ 1 file changed, 728 insertions(+)
diff --git a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c index 3d1e52411b69..28dcc683a958 100644 --- a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c +++ b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c @@ -32,14 +32,28 @@ #include <linux/slab.h> #include <linux/pm_runtime.h> #include <linux/iommu.h> +#include <linux/of_graph.h> #include <linux/of.h> #include <linux/of_platform.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-event.h> +#include <media/v4l2-fwnode.h> +#include <media/videobuf2-dma-contig.h> +#include <media/videobuf2-core.h> +#include <linux/videodev2.h> #include <soc/mediatek/smi.h> #include <linux/regmap.h> #include <linux/mfd/syscon.h> #define MTK_MIPICSI_DRV_NAME "mtk-mipicsi" #define MTK_PLATFORM_STR "platform:mt2712" +#define MAX_SUPPORT_WIDTH 4096U +#define MAX_SUPPORT_HEIGHT 4096U +#define MAX_BUFFER_NUM 32U #define MIPI_RX_ANA00_CSI 0x00 #define MIPI_RX_ANA04_CSI 0x04 @@ -86,6 +100,28 @@ #define IMGO_STRIDE 0x238 #define DMA_FRAME_HEADER_EN 0xE00 +#define notifier_to_mipicsi(n) container_of(n, struct mtk_mipicsi_dev, \ + notifier) +/* buffer for one video frame */ +struct mtk_mipicsi_buf { + struct list_head queue; + struct vb2_buffer *vb; + dma_addr_t vb_dma_addr_phy; + int prepare_flag; +}; + +struct mtk_format { + u32 fourcc; + u32 mbus_code; + u8 bpp; +}; + +struct mtk_mipicsi_subdev { + struct device_node *node; + struct v4l2_async_subdev asd; + struct v4l2_subdev *subdev; +}; + struct mtk_mipicsi_channel { void __iomem *seninf_mux; void __iomem *camsv; @@ -103,6 +139,47 @@ struct mtk_mipicsi_dev { void __iomem *seninf_ctrl; void __iomem *seninf; struct regmap *seninf_top; + + struct v4l2_device v4l2_dev; + struct video_device *vdev; + struct vb2_queue queue; + struct v4l2_async_notifier notifier; + struct mtk_mipicsi_subdev mipicsi_sd; + struct v4l2_format fmt; + unsigned int num_user_formats; + const struct mtk_format **user_formats; + const struct mtk_format *current_fmt; + + struct mtk_mipicsi_buf cam_buf[MAX_BUFFER_NUM]; + struct list_head fb_list; + bool streamon; + char drv_name[16]; + u32 id; + + spinlock_t irqlock; + spinlock_t queue_lock; + struct mutex lock; + +}; + +static const struct mtk_format mtk_mipicsi_formats[] = { +{ + .fourcc = V4L2_PIX_FMT_YUYV, + .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8, + .bpp = 2, +}, { + .fourcc = V4L2_PIX_FMT_YVYU, + .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8, + .bpp = 2, +}, { + .fourcc = V4L2_PIX_FMT_UYVY, + .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8, + .bpp = 2, +}, { + .fourcc = V4L2_PIX_FMT_VYUY, + .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8, + .bpp = 2, +}, }; static void mtk_mipicsi_ana_init(void __iomem *base) @@ -335,6 +412,321 @@ static const struct dev_pm_ops mtk_mipicsi_pm = { mtk_mipicsi_pm_resume, NULL) }; +static int mtk_mipicsi_vb2_queue_setup(struct vb2_queue *vq, + unsigned int *nbufs, unsigned int *num_planes, + unsigned int sizes[], struct device *alloc_devs[]) +{ + struct mtk_mipicsi_dev *mipicsi = vb2_get_drv_priv(vq); + u32 sizeimage = mipicsi->fmt.fmt.pix.sizeimage; + + if (*nbufs == 0U || *nbufs > MAX_BUFFER_NUM) + *nbufs = MAX_BUFFER_NUM; + + /* + * Called from VIDIOC_REQBUFS or in compatibility mode For YUV422P + * format, even if there are 3 planes Y, U and V, we reply there is only + * one plane, containing Y, U and V data, one after the other. + */ + if (*num_planes != 0U) + return sizes[0] < sizeimage ? -EINVAL : 0; + + sizes[0] = sizeimage; + *num_planes = 1; + + return 0; +} + +static int mtk_mipicsi_vb2_init(struct vb2_buffer *vb) +{ + struct mtk_mipicsi_dev *mipicsi = vb2_get_drv_priv(vb->vb2_queue); + + mipicsi->cam_buf[vb->index].prepare_flag = 0; + + return 0; +} + +static int mtk_mipicsi_vb2_prepare(struct vb2_buffer *vb) +{ + struct mtk_mipicsi_dev *mipicsi = vb2_get_drv_priv(vb->vb2_queue); + struct mtk_mipicsi_buf *buf; + u32 size = 0; + + buf = &mipicsi->cam_buf[vb->index]; + size = mipicsi->fmt.fmt.pix.sizeimage; + + if (vb2_plane_size(vb, 0) < size) { + dev_err(&mipicsi->pdev->dev, "data will not fit into plane (%lu < %u)", + vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + vb2_set_plane_payload(vb, 0, size); + + if ((buf->prepare_flag) == 0) { + buf->prepare_flag = 1; + buf->vb_dma_addr_phy = + vb2_dma_contig_plane_dma_addr(vb, 0); + buf->vb = vb; + } + + return 0; +} + +static void mtk_mipicsi_vb2_queue(struct vb2_buffer *vb) +{ + struct mtk_mipicsi_dev *mipicsi = vb2_get_drv_priv(vb->vb2_queue); + + spin_lock(&mipicsi->queue_lock); + list_add_tail(&(mipicsi->cam_buf[vb->index].queue), + &(mipicsi->fb_list)); + spin_unlock(&mipicsi->queue_lock); +} + +static int mtk_mipicsi_vb2_start_streaming(struct vb2_queue *vq, + unsigned int count) +{ + struct mtk_mipicsi_dev *mipicsi = vb2_get_drv_priv(vq); + + mipicsi->streamon = true; + + return 0; +} + +static void mtk_mipicsi_vb2_stop_streaming(struct vb2_queue *vq) +{ + struct mtk_mipicsi_dev *mipicsi = vb2_get_drv_priv(vq); + struct mtk_mipicsi_buf *buf = NULL; + struct mtk_mipicsi_buf *tmp = NULL; + unsigned int index = 0; + + spin_lock(&mipicsi->queue_lock); + while (list_empty(&(mipicsi->fb_list)) == 0) { + list_for_each_entry_safe(buf, tmp, &(mipicsi->fb_list), queue) { + if (buf->vb->state == VB2_BUF_STATE_ACTIVE) { + vb2_buffer_done(buf->vb, VB2_BUF_STATE_ERROR); + break; + } + } + buf->vb_dma_addr_phy = 0ULL; + buf->prepare_flag = 0; + index = buf->vb->index; + list_del_init(&(mipicsi->cam_buf[index].queue)); + } + spin_unlock(&mipicsi->queue_lock); + + INIT_LIST_HEAD(&(mipicsi->fb_list)); + + mipicsi->streamon = false; +} + +static struct vb2_ops mtk_vb2_ops = { + .queue_setup = mtk_mipicsi_vb2_queue_setup, + .buf_init = mtk_mipicsi_vb2_init, + .buf_prepare = mtk_mipicsi_vb2_prepare, + .buf_queue = mtk_mipicsi_vb2_queue, + .start_streaming = mtk_mipicsi_vb2_start_streaming, + .stop_streaming = mtk_mipicsi_vb2_stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, +}; + +static int mtk_s_input(struct file *file, void *priv, unsigned int i) +{ + if (i > 0) + return -EINVAL; + + return 0; +} + +static int mtk_g_input(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + + return 0; +} + +static int mtk_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + if (i->index != 0) + return -EINVAL; + + i->type = V4L2_INPUT_TYPE_CAMERA; + strscpy(i->name, "Camera", sizeof(i->name)); + + return 0; +} + +static int mtk_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct mtk_mipicsi_dev *mipicsi = video_drvdata(file); + + if (f->index >= mipicsi->num_user_formats) + return -EINVAL; + + f->pixelformat = mipicsi->user_formats[f->index]->fourcc; + + return 0; +} + +static const struct mtk_format *find_format_by_fourcc( + struct mtk_mipicsi_dev *mipicsi, + unsigned int fourcc) +{ + unsigned int num_formats = mipicsi->num_user_formats; + const struct mtk_format *fmt; + unsigned int i; + + for (i = 0; i < num_formats; i++) { + fmt = mipicsi->user_formats[i]; + if (fmt->fourcc == fourcc) + return fmt; + } + + return NULL; +} + +static int mtk_mipicsi_try_fmt(struct mtk_mipicsi_dev *mipicsi, + struct v4l2_format *f, + const struct mtk_format **current_fmt) +{ + const struct mtk_format *mtk_fmt; + struct v4l2_pix_format *pix = &f->fmt.pix; + struct v4l2_subdev_pad_config pad_cfg; + struct v4l2_subdev *sd = mipicsi->mipicsi_sd.subdev; + struct v4l2_subdev_format format = { + .which = V4L2_SUBDEV_FORMAT_TRY, + }; + int ret = 0; + + mtk_fmt = find_format_by_fourcc(mipicsi, pix->pixelformat); + if (!mtk_fmt) { + mtk_fmt = mipicsi->user_formats[0]; + pix->pixelformat = mtk_fmt->fourcc; + } + + /* limit to MTK hardware capabilities */ + pix->height = clamp(pix->height, 0U, MAX_SUPPORT_HEIGHT); + pix->width = clamp(pix->width, 0U, MAX_SUPPORT_WIDTH); + v4l2_fill_mbus_format(&format.format, pix, mtk_fmt->mbus_code); + ret = v4l2_subdev_call(sd, pad, set_fmt, &pad_cfg, &format); + if (ret < 0) + return ret; + + v4l2_fill_pix_format(pix, &format.format); + pix->bytesperline = pix->width * mtk_fmt->bpp; + pix->sizeimage = pix->bytesperline * pix->height; + + if (current_fmt) + *current_fmt = mtk_fmt; + + return ret; +} + +static int mtk_mipicsi_set_fmt(struct mtk_mipicsi_dev *mipicsi, + struct v4l2_format *f) +{ + struct v4l2_subdev *sd = mipicsi->mipicsi_sd.subdev; + struct device *dev = &mipicsi->pdev->dev; + struct v4l2_pix_format *pix = &f->fmt.pix; + struct v4l2_subdev_format format = { + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + }; + const struct mtk_format *current_fmt; + int ret; + + ret = mtk_mipicsi_try_fmt(mipicsi, f, ¤t_fmt); + if (ret) + return ret; + + v4l2_fill_mbus_format(&format.format, &f->fmt.pix, + current_fmt->mbus_code); + + ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &format); + if (ret < 0) + return ret; + + mipicsi->fmt = *f; + mipicsi->current_fmt = current_fmt; + + dev_info(dev, "width/height/sizeimage %u/%u/%u", pix->width, + pix->height, + pix->sizeimage); + + return ret; +} + +static int mtk_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct mtk_mipicsi_dev *mipicsi = video_drvdata(file); + + if (vb2_is_streaming(&mipicsi->queue)) + return -EBUSY; + + return mtk_mipicsi_set_fmt(mipicsi, f); +} + +static int mtk_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *fmt) +{ + struct mtk_mipicsi_dev *mipicsi = video_drvdata(file); + + *fmt = mipicsi->fmt; + + return 0; +} + +static int mtk_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct mtk_mipicsi_dev *mipicsi = video_drvdata(file); + + return mtk_mipicsi_try_fmt(mipicsi, f, NULL); +} + +static int mtk_mipicsi_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct mtk_mipicsi_dev *mipicsi = video_drvdata(file); + + strlcpy(cap->card, MTK_PLATFORM_STR, sizeof(cap->card)); + strlcpy(cap->driver, mipicsi->drv_name, sizeof(cap->driver)); + strlcpy(cap->bus_info, MTK_PLATFORM_STR, sizeof(cap->bus_info)); + cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; + + return 0; +} + +static const struct v4l2_ioctl_ops mtk_mipicsi_ioctl_ops = { + .vidioc_querycap = mtk_mipicsi_querycap, + + .vidioc_try_fmt_vid_cap = mtk_try_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = mtk_g_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = mtk_s_fmt_vid_cap, + .vidioc_enum_fmt_vid_cap = mtk_enum_fmt_vid_cap, + + .vidioc_enum_input = mtk_enum_input, + .vidioc_g_input = mtk_g_input, + .vidioc_s_input = mtk_s_input, + + .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 = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + static int seninf_mux_camsv_node_parse(struct mtk_mipicsi_dev *mipicsi, int index) { @@ -452,6 +844,16 @@ static int mtk_mipicsi_node_parse(struct mtk_mipicsi_dev *mipicsi) dev = &mipicsi->pdev->dev; pdev = mipicsi->pdev; + /* mediatek,mipicsiid is a flag to show which mipicsi HW */ + ret = of_property_read_u32(dev->of_node, "mediatek,mipicsiid", + (u32 *)&mipicsi->id); + if (ret != 0) { + dev_info(dev, "not set mediatek,mipicsiid, use default id 0\n"); + mipicsi->id = 0; + } + (void)sprintf(mipicsi->drv_name, MTK_MIPICSI_DRV_NAME"%d", + mipicsi->id); + /* get and parse seninf_mux_camsv */ camsv_num = of_count_phandle_with_args(dev->of_node, "mediatek,seninf_mux_camsv", NULL); @@ -514,6 +916,262 @@ static int mtk_mipicsi_node_parse(struct mtk_mipicsi_dev *mipicsi) return 0; } +static int mtk_mipicsi_set_default_fmt(struct mtk_mipicsi_dev *mipicsi) +{ + struct v4l2_format f = { + .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, + .fmt.pix = { + .width = 1280, + .height = 720, + .field = V4L2_FIELD_NONE, + .pixelformat = mipicsi->user_formats[0]->fourcc, + }, + }; + int ret; + + ret = mtk_mipicsi_try_fmt(mipicsi, &f, NULL); + if (ret) + return ret; + mipicsi->current_fmt = mipicsi->user_formats[0]; + mipicsi->fmt = f; + + return 0; +} + +static int mipicsi_formats_init(struct mtk_mipicsi_dev *mipicsi) +{ + const struct mtk_format *mipicsi_fmts[ARRAY_SIZE(mtk_mipicsi_formats)]; + struct v4l2_subdev *sd = mipicsi->mipicsi_sd.subdev; + unsigned int i, j, num_fmts = 0; + struct v4l2_subdev_mbus_code_enum mbus_code = { + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + }; + + while (!v4l2_subdev_call(sd, pad, enum_mbus_code, NULL, &mbus_code)) { + for (i = 0; i < ARRAY_SIZE(mtk_mipicsi_formats); i++) { + if (mtk_mipicsi_formats[i].mbus_code != mbus_code.code) + continue; + + /* Code supported, have we got this fourcc yet? */ + for (j = 0; j < num_fmts; j++) + if (mipicsi_fmts[j]->fourcc == + mtk_mipicsi_formats[i].fourcc) + /* Already available */ + break; + + if (j == num_fmts) + /* new */ + mipicsi_fmts[num_fmts++] = + &mtk_mipicsi_formats[i]; + } + mbus_code.index++; + } + + if (!num_fmts) + return -ENXIO; + + mipicsi->num_user_formats = num_fmts; + mipicsi->user_formats = devm_kcalloc(&mipicsi->pdev->dev, + num_fmts, + sizeof(struct isi_format *), + GFP_KERNEL); + if (!mipicsi->user_formats) + return -ENOMEM; + + memcpy(mipicsi->user_formats, mipicsi_fmts, + num_fmts * sizeof(struct mtk_format *)); + mipicsi->current_fmt = mipicsi->user_formats[0]; + + return 0; +} + +static int mipicsi_subdev_notify_complete(struct v4l2_async_notifier *notifier) +{ + struct mtk_mipicsi_dev *mipicsi = notifier_to_mipicsi(notifier); + struct device *dev = &mipicsi->pdev->dev; + int ret; + + mipicsi->vdev->ctrl_handler = mipicsi->mipicsi_sd.subdev->ctrl_handler; + ret = mipicsi_formats_init(mipicsi); + if (ret) { + dev_err(dev, "No supported mediabus format found\n"); + return ret; + } + + ret = mtk_mipicsi_set_default_fmt(mipicsi); + if (ret) { + dev_err(dev, "Could not set default format\n"); + return ret; + } + + ret = video_register_device(mipicsi->vdev, VFL_TYPE_GRABBER, -1); + if (ret) { + dev_err(dev, "Failed to register video device\n"); + return ret; + } + + dev_dbg(dev, "Device registered as %s\n", + video_device_node_name(mipicsi->vdev)); + + return 0; +} + +static void mipicsi_subdev_notify_unbind(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *sd, + struct v4l2_async_subdev *asd) +{ + struct mtk_mipicsi_dev *mipicsi = notifier_to_mipicsi(notifier); + + dev_dbg(&mipicsi->pdev->dev, "Removing %s\n", + video_device_node_name(mipicsi->vdev)); + + /* Checks internally if vdev have been init or not */ + video_unregister_device(mipicsi->vdev); +} + +static int mipicsi_subdev_notify_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *subdev, + struct v4l2_async_subdev *asd) +{ + struct mtk_mipicsi_dev *mipicsi = notifier_to_mipicsi(notifier); + + dev_dbg(&mipicsi->pdev->dev, "subdev %s bound\n", subdev->name); + + mipicsi->mipicsi_sd.subdev = subdev; + + return 0; +} + +static const struct v4l2_async_notifier_operations mipicsi_subdev_notify_ops = { + .bound = mipicsi_subdev_notify_bound, + .unbind = mipicsi_subdev_notify_unbind, + .complete = mipicsi_subdev_notify_complete, +}; + +static int mtk_mipicsi_graph_parse(struct mtk_mipicsi_dev *mipicsi, + struct device_node *node) +{ + struct device_node *ep = NULL; + struct device_node *remote; + + ep = of_graph_get_next_endpoint(node, ep); + if (!ep) + return -EINVAL; + + remote = of_graph_get_remote_port_parent(ep); + of_node_put(ep); + if (!remote) + return -EINVAL; + + /* Remote node to connect */ + mipicsi->mipicsi_sd.node = remote; + mipicsi->mipicsi_sd.asd.match_type = V4L2_ASYNC_MATCH_FWNODE; + mipicsi->mipicsi_sd.asd.match.fwnode = of_fwnode_handle(remote); + return 0; +} + +static int mtk_mipicsi_subdev_init(struct mtk_mipicsi_dev *mipicsi) +{ + int ret; + struct device *dev = &mipicsi->pdev->dev; + + /* Parse the graph to extract a list of subdevice DT nodes. */ + ret = mtk_mipicsi_graph_parse(mipicsi, dev->of_node); + if (ret < 0) { + dev_err(&mipicsi->pdev->dev, "Graph parsing failed\n"); + return ret; + } + + v4l2_async_notifier_init(&mipicsi->notifier); + + ret = v4l2_async_notifier_add_subdev(&mipicsi->notifier, + &mipicsi->mipicsi_sd.asd); + if (ret) { + of_node_put(mipicsi->mipicsi_sd.node); + return ret; + } + + mipicsi->notifier.ops = &mipicsi_subdev_notify_ops; + + ret = v4l2_async_notifier_register(&mipicsi->v4l2_dev, + &mipicsi->notifier); + if (ret < 0) { + dev_err(&mipicsi->pdev->dev, "Notifier registration failed\n"); + v4l2_async_notifier_cleanup(&mipicsi->notifier); + return ret; + } + + return 0; +} + +static int mtk_mipicsi_open(struct file *file) +{ + struct mtk_mipicsi_dev *mipicsi = video_drvdata(file); + struct v4l2_subdev *sd = mipicsi->mipicsi_sd.subdev; + int ret; + + if (mutex_lock_interruptible(&mipicsi->lock)) + return -ERESTARTSYS; + + ret = v4l2_fh_open(file); + if (ret < 0) + goto unlock; + + if (!v4l2_fh_is_singular_file(file)) + goto fh_rel; + + ret = v4l2_subdev_call(sd, core, s_power, 1); + if (ret < 0 && ret != -ENOIOCTLCMD) + goto fh_rel; + + ret = mtk_mipicsi_set_fmt(mipicsi, &mipicsi->fmt); + if (ret) + v4l2_subdev_call(sd, core, s_power, 0); + + pm_runtime_get_sync(&mipicsi->pdev->dev); + +fh_rel: + if (ret) + v4l2_fh_release(file); +unlock: + mutex_unlock(&mipicsi->lock); + return ret; +} + +static int mtk_mipicsi_release(struct file *file) +{ + struct mtk_mipicsi_dev *mipicsi = video_drvdata(file); + struct device *dev = &mipicsi->pdev->dev; + struct v4l2_subdev *sd = mipicsi->mipicsi_sd.subdev; + bool fh_singular; + int ret; + + mutex_lock(&mipicsi->lock); + + pm_runtime_put_sync(dev); + + fh_singular = v4l2_fh_is_singular_file(file); + + ret = _vb2_fop_release(file, NULL); + + if (fh_singular) + v4l2_subdev_call(sd, core, s_power, 0); + + mutex_unlock(&mipicsi->lock); + + return ret; +} + +static const struct v4l2_file_operations mipicsi_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, + .open = mtk_mipicsi_open, + .release = mtk_mipicsi_release, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, + .read = vb2_fop_read, +}; + static int mtk_mipicsi_probe(struct platform_device *pdev) { struct mtk_mipicsi_dev *mipicsi = NULL; @@ -521,6 +1179,7 @@ static int mtk_mipicsi_probe(struct platform_device *pdev) struct iommu_domain *iommu = NULL; struct device_node *larb_node = NULL; struct platform_device *larb_pdev = NULL; + struct vb2_queue *q; iommu = iommu_get_domain_for_dev(&pdev->dev); if (iommu == NULL) { @@ -557,9 +1216,78 @@ static int mtk_mipicsi_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); + INIT_LIST_HEAD(&mipicsi->fb_list); + spin_lock_init(&mipicsi->queue_lock); + spin_lock_init(&mipicsi->irqlock); + mutex_init(&mipicsi->lock); + + q = &mipicsi->queue; + + /* Initialize the top-level structure */ + ret = v4l2_device_register(&pdev->dev, &mipicsi->v4l2_dev); + if (ret) + return ret; + + mipicsi->vdev = video_device_alloc(); + if (mipicsi->vdev == NULL) { + ret = -ENOMEM; + goto err_vdev_alloc; + } + + /* video node */ + mipicsi->vdev->fops = &mipicsi_fops; + mipicsi->vdev->v4l2_dev = &mipicsi->v4l2_dev; + mipicsi->vdev->queue = &mipicsi->queue; + strscpy(mipicsi->vdev->name, mipicsi->drv_name, + sizeof(mipicsi->vdev->name)); + mipicsi->vdev->release = video_device_release; + mipicsi->vdev->ioctl_ops = &mtk_mipicsi_ioctl_ops; + mipicsi->vdev->lock = &mipicsi->lock; + mipicsi->vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | + V4L2_CAP_STREAMING | + V4L2_CAP_READWRITE; + video_set_drvdata(mipicsi->vdev, mipicsi); + + /* buffer queue */ + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; + q->drv_priv = mipicsi; + q->buf_struct_size = sizeof(struct vb2_buffer); + q->ops = &mtk_vb2_ops; + q->mem_ops = &vb2_dma_contig_memops; + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->dev = mipicsi->v4l2_dev.dev; + q->lock = &mipicsi->lock; + + ret = vb2_queue_init(q); + if (ret < 0) { + dev_err(&pdev->dev, "failed to initialize VB2 queue\n"); + goto err_vb2_queue; + } + + mipicsi->streamon = false; + + ret = mtk_mipicsi_subdev_init(mipicsi); + if (ret < 0) + goto err_mipicsi_subdev_init; + + ret = vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32U)); + if (ret != 0) { + dev_err(&pdev->dev, "dma set max seg size fail\n"); + goto clean; + } + dev_set_drvdata(&pdev->dev, mipicsi); dev_info(&pdev->dev, "probe done\n"); + return ret; +clean: +err_mipicsi_subdev_init: +err_vb2_queue: + video_device_release(mipicsi->vdev); +err_vdev_alloc: + v4l2_device_unregister(&mipicsi->v4l2_dev); + pm_runtime_disable(&pdev->dev); return ret; } -- 2.18.0