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path: root/drivers/media/platform/sti/hva/hva-v4l2.c
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Diffstat (limited to 'drivers/media/platform/sti/hva/hva-v4l2.c')
-rw-r--r--drivers/media/platform/sti/hva/hva-v4l2.c1308
1 files changed, 1308 insertions, 0 deletions
diff --git a/drivers/media/platform/sti/hva/hva-v4l2.c b/drivers/media/platform/sti/hva/hva-v4l2.c
new file mode 100644
index 000000000000..54e79f71bfbe
--- /dev/null
+++ b/drivers/media/platform/sti/hva/hva-v4l2.c
@@ -0,0 +1,1308 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2015
+ * Authors: Yannick Fertre <yannick.fertre@st.com>
+ * Hugues Fruchet <hugues.fruchet@st.com>
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "hva.h"
+#include "hva-hw.h"
+
+#define HVA_NAME "st-hva"
+
+#define MIN_FRAMES 1
+#define MIN_STREAMS 1
+
+#define HVA_MIN_WIDTH 32
+#define HVA_MAX_WIDTH 1920
+#define HVA_MIN_HEIGHT 32
+#define HVA_MAX_HEIGHT 1920
+
+/* HVA requires a 16x16 pixels alignment for frames */
+#define HVA_WIDTH_ALIGNMENT 16
+#define HVA_HEIGHT_ALIGNMENT 16
+
+#define HVA_DEFAULT_WIDTH HVA_MIN_WIDTH
+#define HVA_DEFAULT_HEIGHT HVA_MIN_HEIGHT
+#define HVA_DEFAULT_FRAME_NUM 1
+#define HVA_DEFAULT_FRAME_DEN 30
+
+#define to_type_str(type) (type == V4L2_BUF_TYPE_VIDEO_OUTPUT ? \
+ "frame" : "stream")
+
+#define fh_to_ctx(f) (container_of(f, struct hva_ctx, fh))
+
+/* registry of available encoders */
+const struct hva_enc *hva_encoders[] = {
+};
+
+static inline int frame_size(u32 w, u32 h, u32 fmt)
+{
+ switch (fmt) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ return (w * h * 3) / 2;
+ default:
+ return 0;
+ }
+}
+
+static inline int frame_stride(u32 w, u32 fmt)
+{
+ switch (fmt) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ return w;
+ default:
+ return 0;
+ }
+}
+
+static inline int frame_alignment(u32 fmt)
+{
+ switch (fmt) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ /* multiple of 2 */
+ return 2;
+ default:
+ return 1;
+ }
+}
+
+static inline int estimated_stream_size(u32 w, u32 h)
+{
+ /*
+ * HVA only encodes in YUV420 format, whatever the frame format.
+ * A compression ratio of 2 is assumed: thus, the maximum size
+ * of a stream is estimated to ((width x height x 3 / 2) / 2)
+ */
+ return (w * h * 3) / 4;
+}
+
+static void set_default_params(struct hva_ctx *ctx)
+{
+ struct hva_frameinfo *frameinfo = &ctx->frameinfo;
+ struct hva_streaminfo *streaminfo = &ctx->streaminfo;
+
+ frameinfo->pixelformat = V4L2_PIX_FMT_NV12;
+ frameinfo->width = HVA_DEFAULT_WIDTH;
+ frameinfo->height = HVA_DEFAULT_HEIGHT;
+ frameinfo->aligned_width = ALIGN(frameinfo->width,
+ HVA_WIDTH_ALIGNMENT);
+ frameinfo->aligned_height = ALIGN(frameinfo->height,
+ HVA_HEIGHT_ALIGNMENT);
+ frameinfo->size = frame_size(frameinfo->aligned_width,
+ frameinfo->aligned_height,
+ frameinfo->pixelformat);
+
+ streaminfo->streamformat = V4L2_PIX_FMT_H264;
+ streaminfo->width = HVA_DEFAULT_WIDTH;
+ streaminfo->height = HVA_DEFAULT_HEIGHT;
+
+ ctx->colorspace = V4L2_COLORSPACE_REC709;
+ ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
+ ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
+ ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
+
+ ctx->max_stream_size = estimated_stream_size(streaminfo->width,
+ streaminfo->height);
+}
+
+static const struct hva_enc *hva_find_encoder(struct hva_ctx *ctx,
+ u32 pixelformat,
+ u32 streamformat)
+{
+ struct hva_dev *hva = ctx_to_hdev(ctx);
+ const struct hva_enc *enc;
+ unsigned int i;
+
+ for (i = 0; i < hva->nb_of_encoders; i++) {
+ enc = hva->encoders[i];
+ if ((enc->pixelformat == pixelformat) &&
+ (enc->streamformat == streamformat))
+ return enc;
+ }
+
+ return NULL;
+}
+
+static void register_format(u32 format, u32 formats[], u32 *nb_of_formats)
+{
+ u32 i;
+ bool found = false;
+
+ for (i = 0; i < *nb_of_formats; i++) {
+ if (format == formats[i]) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found)
+ formats[(*nb_of_formats)++] = format;
+}
+
+static void register_formats(struct hva_dev *hva)
+{
+ unsigned int i;
+
+ for (i = 0; i < hva->nb_of_encoders; i++) {
+ register_format(hva->encoders[i]->pixelformat,
+ hva->pixelformats,
+ &hva->nb_of_pixelformats);
+
+ register_format(hva->encoders[i]->streamformat,
+ hva->streamformats,
+ &hva->nb_of_streamformats);
+ }
+}
+
+static void register_encoders(struct hva_dev *hva)
+{
+ struct device *dev = hva_to_dev(hva);
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(hva_encoders); i++) {
+ if (hva->nb_of_encoders >= HVA_MAX_ENCODERS) {
+ dev_dbg(dev,
+ "%s failed to register %s encoder (%d maximum reached)\n",
+ HVA_PREFIX, hva_encoders[i]->name,
+ HVA_MAX_ENCODERS);
+ return;
+ }
+
+ hva->encoders[hva->nb_of_encoders++] = hva_encoders[i];
+ dev_info(dev, "%s %s encoder registered\n", HVA_PREFIX,
+ hva_encoders[i]->name);
+ }
+}
+
+static int hva_open_encoder(struct hva_ctx *ctx, u32 streamformat,
+ u32 pixelformat, struct hva_enc **penc)
+{
+ struct hva_dev *hva = ctx_to_hdev(ctx);
+ struct device *dev = ctx_to_dev(ctx);
+ struct hva_enc *enc;
+ int ret;
+
+ /* find an encoder which can deal with these formats */
+ enc = (struct hva_enc *)hva_find_encoder(ctx, pixelformat,
+ streamformat);
+ if (!enc) {
+ dev_err(dev, "%s no encoder found matching %4.4s => %4.4s\n",
+ ctx->name, (char *)&pixelformat, (char *)&streamformat);
+ return -EINVAL;
+ }
+
+ dev_dbg(dev, "%s one encoder matching %4.4s => %4.4s\n",
+ ctx->name, (char *)&pixelformat, (char *)&streamformat);
+
+ /* update instance name */
+ snprintf(ctx->name, sizeof(ctx->name), "[%3d:%4.4s]",
+ hva->instance_id, (char *)&streamformat);
+
+ /* open encoder instance */
+ ret = enc->open(ctx);
+ if (ret) {
+ dev_err(dev, "%s failed to open encoder instance (%d)\n",
+ ctx->name, ret);
+ return ret;
+ }
+
+ dev_dbg(dev, "%s %s encoder opened\n", ctx->name, enc->name);
+
+ *penc = enc;
+
+ return ret;
+}
+
+/*
+ * V4L2 ioctl operations
+ */
+
+static int hva_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct hva_dev *hva = ctx_to_hdev(ctx);
+
+ strlcpy(cap->driver, HVA_NAME, sizeof(cap->driver));
+ strlcpy(cap->card, hva->vdev->name, sizeof(cap->card));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ hva->pdev->name);
+
+ return 0;
+}
+
+static int hva_enum_fmt_stream(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct hva_dev *hva = ctx_to_hdev(ctx);
+
+ if (unlikely(f->index >= hva->nb_of_streamformats))
+ return -EINVAL;
+
+ f->pixelformat = hva->streamformats[f->index];
+
+ return 0;
+}
+
+static int hva_enum_fmt_frame(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct hva_dev *hva = ctx_to_hdev(ctx);
+
+ if (unlikely(f->index >= hva->nb_of_pixelformats))
+ return -EINVAL;
+
+ f->pixelformat = hva->pixelformats[f->index];
+
+ return 0;
+}
+
+static int hva_g_fmt_stream(struct file *file, void *fh, struct v4l2_format *f)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct hva_streaminfo *streaminfo = &ctx->streaminfo;
+
+ f->fmt.pix.width = streaminfo->width;
+ f->fmt.pix.height = streaminfo->height;
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ f->fmt.pix.colorspace = ctx->colorspace;
+ f->fmt.pix.xfer_func = ctx->xfer_func;
+ f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
+ f->fmt.pix.quantization = ctx->quantization;
+ f->fmt.pix.pixelformat = streaminfo->streamformat;
+ f->fmt.pix.bytesperline = 0;
+ f->fmt.pix.sizeimage = ctx->max_stream_size;
+
+ return 0;
+}
+
+static int hva_g_fmt_frame(struct file *file, void *fh, struct v4l2_format *f)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct hva_frameinfo *frameinfo = &ctx->frameinfo;
+
+ f->fmt.pix.width = frameinfo->width;
+ f->fmt.pix.height = frameinfo->height;
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ f->fmt.pix.colorspace = ctx->colorspace;
+ f->fmt.pix.xfer_func = ctx->xfer_func;
+ f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
+ f->fmt.pix.quantization = ctx->quantization;
+ f->fmt.pix.pixelformat = frameinfo->pixelformat;
+ f->fmt.pix.bytesperline = frame_stride(frameinfo->aligned_width,
+ frameinfo->pixelformat);
+ f->fmt.pix.sizeimage = frameinfo->size;
+
+ return 0;
+}
+
+static int hva_try_fmt_stream(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct device *dev = ctx_to_dev(ctx);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ u32 streamformat = pix->pixelformat;
+ const struct hva_enc *enc;
+ u32 width, height;
+ u32 stream_size;
+
+ enc = hva_find_encoder(ctx, ctx->frameinfo.pixelformat, streamformat);
+ if (!enc) {
+ dev_dbg(dev,
+ "%s V4L2 TRY_FMT (CAPTURE): unsupported format %.4s\n",
+ ctx->name, (char *)&pix->pixelformat);
+ return -EINVAL;
+ }
+
+ width = pix->width;
+ height = pix->height;
+ if (ctx->flags & HVA_FLAG_FRAMEINFO) {
+ /*
+ * if the frame resolution is already fixed, only allow the
+ * same stream resolution
+ */
+ pix->width = ctx->frameinfo.width;
+ pix->height = ctx->frameinfo.height;
+ if ((pix->width != width) || (pix->height != height))
+ dev_dbg(dev,
+ "%s V4L2 TRY_FMT (CAPTURE): resolution updated %dx%d -> %dx%d to fit frame resolution\n",
+ ctx->name, width, height,
+ pix->width, pix->height);
+ } else {
+ /* adjust width & height */
+ v4l_bound_align_image(&pix->width,
+ HVA_MIN_WIDTH, enc->max_width,
+ 0,
+ &pix->height,
+ HVA_MIN_HEIGHT, enc->max_height,
+ 0,
+ 0);
+
+ if ((pix->width != width) || (pix->height != height))
+ dev_dbg(dev,
+ "%s V4L2 TRY_FMT (CAPTURE): resolution updated %dx%d -> %dx%d to fit min/max/alignment\n",
+ ctx->name, width, height,
+ pix->width, pix->height);
+ }
+
+ stream_size = estimated_stream_size(pix->width, pix->height);
+ if (pix->sizeimage < stream_size)
+ pix->sizeimage = stream_size;
+
+ pix->bytesperline = 0;
+ pix->colorspace = ctx->colorspace;
+ pix->xfer_func = ctx->xfer_func;
+ pix->ycbcr_enc = ctx->ycbcr_enc;
+ pix->quantization = ctx->quantization;
+ pix->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+static int hva_try_fmt_frame(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct device *dev = ctx_to_dev(ctx);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ u32 pixelformat = pix->pixelformat;
+ const struct hva_enc *enc;
+ u32 width, height;
+
+ enc = hva_find_encoder(ctx, pixelformat, ctx->streaminfo.streamformat);
+ if (!enc) {
+ dev_dbg(dev,
+ "%s V4L2 TRY_FMT (OUTPUT): unsupported format %.4s\n",
+ ctx->name, (char *)&pixelformat);
+ return -EINVAL;
+ }
+
+ /* adjust width & height */
+ width = pix->width;
+ height = pix->height;
+ v4l_bound_align_image(&pix->width,
+ HVA_MIN_WIDTH, HVA_MAX_WIDTH,
+ frame_alignment(pixelformat) - 1,
+ &pix->height,
+ HVA_MIN_HEIGHT, HVA_MAX_HEIGHT,
+ frame_alignment(pixelformat) - 1,
+ 0);
+
+ if ((pix->width != width) || (pix->height != height))
+ dev_dbg(dev,
+ "%s V4L2 TRY_FMT (OUTPUT): resolution updated %dx%d -> %dx%d to fit min/max/alignment\n",
+ ctx->name, width, height, pix->width, pix->height);
+
+ width = ALIGN(pix->width, HVA_WIDTH_ALIGNMENT);
+ height = ALIGN(pix->height, HVA_HEIGHT_ALIGNMENT);
+
+ if (!pix->colorspace) {
+ pix->colorspace = V4L2_COLORSPACE_REC709;
+ pix->xfer_func = V4L2_XFER_FUNC_DEFAULT;
+ pix->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
+ pix->quantization = V4L2_QUANTIZATION_DEFAULT;
+ }
+
+ pix->bytesperline = frame_stride(width, pixelformat);
+ pix->sizeimage = frame_size(width, height, pixelformat);
+ pix->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+static int hva_s_fmt_stream(struct file *file, void *fh, struct v4l2_format *f)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct device *dev = ctx_to_dev(ctx);
+ struct vb2_queue *vq;
+ int ret;
+
+ ret = hva_try_fmt_stream(file, fh, f);
+ if (ret) {
+ dev_dbg(dev, "%s V4L2 S_FMT (CAPTURE): unsupported format %.4s\n",
+ ctx->name, (char *)&f->fmt.pix.pixelformat);
+ return ret;
+ }
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (vb2_is_streaming(vq)) {
+ dev_dbg(dev, "%s V4L2 S_FMT (CAPTURE): queue busy\n",
+ ctx->name);
+ return -EBUSY;
+ }
+
+ ctx->max_stream_size = f->fmt.pix.sizeimage;
+ ctx->streaminfo.width = f->fmt.pix.width;
+ ctx->streaminfo.height = f->fmt.pix.height;
+ ctx->streaminfo.streamformat = f->fmt.pix.pixelformat;
+ ctx->flags |= HVA_FLAG_STREAMINFO;
+
+ return 0;
+}
+
+static int hva_s_fmt_frame(struct file *file, void *fh, struct v4l2_format *f)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct device *dev = ctx_to_dev(ctx);
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct vb2_queue *vq;
+ int ret;
+
+ ret = hva_try_fmt_frame(file, fh, f);
+ if (ret) {
+ dev_dbg(dev, "%s V4L2 S_FMT (OUTPUT): unsupported format %.4s\n",
+ ctx->name, (char *)&pix->pixelformat);
+ return ret;
+ }
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (vb2_is_streaming(vq)) {
+ dev_dbg(dev, "%s V4L2 S_FMT (OUTPUT): queue busy\n", ctx->name);
+ return -EBUSY;
+ }
+
+ ctx->colorspace = pix->colorspace;
+ ctx->xfer_func = pix->xfer_func;
+ ctx->ycbcr_enc = pix->ycbcr_enc;
+ ctx->quantization = pix->quantization;
+
+ ctx->frameinfo.aligned_width = ALIGN(pix->width, HVA_WIDTH_ALIGNMENT);
+ ctx->frameinfo.aligned_height = ALIGN(pix->height,
+ HVA_HEIGHT_ALIGNMENT);
+ ctx->frameinfo.size = pix->sizeimage;
+ ctx->frameinfo.pixelformat = pix->pixelformat;
+ ctx->frameinfo.width = pix->width;
+ ctx->frameinfo.height = pix->height;
+ ctx->flags |= HVA_FLAG_FRAMEINFO;
+
+ return 0;
+}
+
+static int hva_g_parm(struct file *file, void *fh, struct v4l2_streamparm *sp)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct v4l2_fract *time_per_frame = &ctx->ctrls.time_per_frame;
+
+ if (sp->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+
+ sp->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
+ sp->parm.output.timeperframe.numerator = time_per_frame->numerator;
+ sp->parm.output.timeperframe.denominator =
+ time_per_frame->denominator;
+
+ return 0;
+}
+
+static int hva_s_parm(struct file *file, void *fh, struct v4l2_streamparm *sp)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct v4l2_fract *time_per_frame = &ctx->ctrls.time_per_frame;
+
+ if (sp->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+
+ if (!sp->parm.output.timeperframe.numerator ||
+ !sp->parm.output.timeperframe.denominator)
+ return hva_g_parm(file, fh, sp);
+
+ sp->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
+ time_per_frame->numerator = sp->parm.output.timeperframe.numerator;
+ time_per_frame->denominator =
+ sp->parm.output.timeperframe.denominator;
+
+ return 0;
+}
+
+static int hva_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct device *dev = ctx_to_dev(ctx);
+
+ if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ /*
+ * depending on the targeted compressed video format, the
+ * capture buffer might contain headers (e.g. H.264 SPS/PPS)
+ * filled in by the driver client; the size of these data is
+ * copied from the bytesused field of the V4L2 buffer in the
+ * payload field of the hva stream buffer
+ */
+ struct vb2_queue *vq;
+ struct hva_stream *stream;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, buf->type);
+
+ if (buf->index >= vq->num_buffers) {
+ dev_dbg(dev, "%s buffer index %d out of range (%d)\n",
+ ctx->name, buf->index, vq->num_buffers);
+ return -EINVAL;
+ }
+
+ stream = (struct hva_stream *)vq->bufs[buf->index];
+ stream->bytesused = buf->bytesused;
+ }
+
+ return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
+}
+
+/* V4L2 ioctl ops */
+static const struct v4l2_ioctl_ops hva_ioctl_ops = {
+ .vidioc_querycap = hva_querycap,
+ .vidioc_enum_fmt_vid_cap = hva_enum_fmt_stream,
+ .vidioc_enum_fmt_vid_out = hva_enum_fmt_frame,
+ .vidioc_g_fmt_vid_cap = hva_g_fmt_stream,
+ .vidioc_g_fmt_vid_out = hva_g_fmt_frame,
+ .vidioc_try_fmt_vid_cap = hva_try_fmt_stream,
+ .vidioc_try_fmt_vid_out = hva_try_fmt_frame,
+ .vidioc_s_fmt_vid_cap = hva_s_fmt_stream,
+ .vidioc_s_fmt_vid_out = hva_s_fmt_frame,
+ .vidioc_g_parm = hva_g_parm,
+ .vidioc_s_parm = hva_s_parm,
+ .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
+ .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
+ .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
+ .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+ .vidioc_qbuf = hva_qbuf,
+ .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
+ .vidioc_streamon = v4l2_m2m_ioctl_streamon,
+ .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+/*
+ * V4L2 control operations
+ */
+
+static int hva_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct hva_ctx *ctx = container_of(ctrl->handler, struct hva_ctx,
+ ctrl_handler);
+ struct device *dev = ctx_to_dev(ctx);
+
+ dev_dbg(dev, "%s S_CTRL: id = %d, val = %d\n", ctx->name,
+ ctrl->id, ctrl->val);
+
+ switch (ctrl->id) {
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ ctx->ctrls.bitrate_mode = ctrl->val;
+ break;
+ case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
+ ctx->ctrls.gop_size = ctrl->val;
+ break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE:
+ ctx->ctrls.bitrate = ctrl->val;
+ break;
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ ctx->ctrls.aspect = ctrl->val;
+ break;
+ default:
+ dev_dbg(dev, "%s S_CTRL: invalid control (id = %d)\n",
+ ctx->name, ctrl->id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* V4L2 control ops */
+static const struct v4l2_ctrl_ops hva_ctrl_ops = {
+ .s_ctrl = hva_s_ctrl,
+};
+
+static int hva_ctrls_setup(struct hva_ctx *ctx)
+{
+ struct device *dev = ctx_to_dev(ctx);
+ u64 mask;
+
+ v4l2_ctrl_handler_init(&ctx->ctrl_handler, 4);
+
+ v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
+ V4L2_MPEG_VIDEO_BITRATE_MODE_CBR,
+ 0,
+ V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
+
+ v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_GOP_SIZE,
+ 1, 60, 1, 16);
+
+ v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_BITRATE,
+ 1000, 60000000, 1000, 20000000);
+
+ mask = ~(1 << V4L2_MPEG_VIDEO_ASPECT_1x1);
+ v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_ASPECT,
+ V4L2_MPEG_VIDEO_ASPECT_1x1,
+ mask,
+ V4L2_MPEG_VIDEO_ASPECT_1x1);
+
+ if (ctx->ctrl_handler.error) {
+ int err = ctx->ctrl_handler.error;
+
+ dev_dbg(dev, "%s controls setup failed (%d)\n",
+ ctx->name, err);
+ v4l2_ctrl_handler_free(&ctx->ctrl_handler);
+ return err;
+ }
+
+ v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
+
+ /* set default time per frame */
+ ctx->ctrls.time_per_frame.numerator = HVA_DEFAULT_FRAME_NUM;
+ ctx->ctrls.time_per_frame.denominator = HVA_DEFAULT_FRAME_DEN;
+
+ return 0;
+}
+
+/*
+ * mem-to-mem operations
+ */
+
+static void hva_run_work(struct work_struct *work)
+{
+ struct hva_ctx *ctx = container_of(work, struct hva_ctx, run_work);
+ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ const struct hva_enc *enc = ctx->enc;
+ struct hva_frame *frame;
+ struct hva_stream *stream;
+ int ret;
+
+ /* protect instance against reentrancy */
+ mutex_lock(&ctx->lock);
+
+ src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+
+ frame = to_hva_frame(src_buf);
+ stream = to_hva_stream(dst_buf);
+ frame->vbuf.sequence = ctx->frame_num++;
+
+ ret = enc->encode(ctx, frame, stream);
+
+ vb2_set_plane_payload(&dst_buf->vb2_buf, 0, stream->bytesused);
+ if (ret) {
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
+ } else {
+ /* propagate frame timestamp */
+ dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
+ dst_buf->field = V4L2_FIELD_NONE;
+ dst_buf->sequence = ctx->stream_num - 1;
+
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
+ }
+
+ mutex_unlock(&ctx->lock);
+
+ v4l2_m2m_job_finish(ctx->hva_dev->m2m_dev, ctx->fh.m2m_ctx);
+}
+
+static void hva_device_run(void *priv)
+{
+ struct hva_ctx *ctx = priv;
+ struct hva_dev *hva = ctx_to_hdev(ctx);
+
+ queue_work(hva->work_queue, &ctx->run_work);
+}
+
+static void hva_job_abort(void *priv)
+{
+ struct hva_ctx *ctx = priv;
+ struct device *dev = ctx_to_dev(ctx);
+
+ dev_dbg(dev, "%s aborting job\n", ctx->name);
+
+ ctx->aborting = true;
+}
+
+static int hva_job_ready(void *priv)
+{
+ struct hva_ctx *ctx = priv;
+ struct device *dev = ctx_to_dev(ctx);
+
+ if (!v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx)) {
+ dev_dbg(dev, "%s job not ready: no frame buffers\n",
+ ctx->name);
+ return 0;
+ }
+
+ if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
+ dev_dbg(dev, "%s job not ready: no stream buffers\n",
+ ctx->name);
+ return 0;
+ }
+
+ if (ctx->aborting) {
+ dev_dbg(dev, "%s job not ready: aborting\n", ctx->name);
+ return 0;
+ }
+
+ return 1;
+}
+
+/* mem-to-mem ops */
+static const struct v4l2_m2m_ops hva_m2m_ops = {
+ .device_run = hva_device_run,
+ .job_abort = hva_job_abort,
+ .job_ready = hva_job_ready,
+};
+
+/*
+ * VB2 queue operations
+ */
+
+static int hva_queue_setup(struct vb2_queue *vq,
+ unsigned int *num_buffers, unsigned int *num_planes,
+ unsigned int sizes[], struct device *alloc_devs[])
+{
+ struct hva_ctx *ctx = vb2_get_drv_priv(vq);
+ struct device *dev = ctx_to_dev(ctx);
+ unsigned int size;
+
+ dev_dbg(dev, "%s %s queue setup: num_buffers %d\n", ctx->name,
+ to_type_str(vq->type), *num_buffers);
+
+ size = vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ?
+ ctx->frameinfo.size : ctx->max_stream_size;
+
+ if (*num_planes)
+ return sizes[0] < size ? -EINVAL : 0;
+
+ /* only one plane supported */
+ *num_planes = 1;
+ sizes[0] = size;
+
+ return 0;
+}
+
+static int hva_buf_prepare(struct vb2_buffer *vb)
+{
+ struct hva_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct device *dev = ctx_to_dev(ctx);
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+
+ if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ struct hva_frame *frame = to_hva_frame(vbuf);
+
+ if (vbuf->field == V4L2_FIELD_ANY)
+ vbuf->field = V4L2_FIELD_NONE;
+ if (vbuf->field != V4L2_FIELD_NONE) {
+ dev_dbg(dev,
+ "%s frame[%d] prepare: %d field not supported\n",
+ ctx->name, vb->index, vbuf->field);
+ return -EINVAL;
+ }
+
+ if (!frame->prepared) {
+ /* get memory addresses */
+ frame->vaddr = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
+ frame->paddr = vb2_dma_contig_plane_dma_addr(
+ &vbuf->vb2_buf, 0);
+ frame->info = ctx->frameinfo;
+ frame->prepared = true;
+
+ dev_dbg(dev,
+ "%s frame[%d] prepared; virt=%p, phy=%pad\n",
+ ctx->name, vb->index,
+ frame->vaddr, &frame->paddr);
+ }
+ } else {
+ struct hva_stream *stream = to_hva_stream(vbuf);
+
+ if (!stream->prepared) {
+ /* get memory addresses */
+ stream->vaddr = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
+ stream->paddr = vb2_dma_contig_plane_dma_addr(
+ &vbuf->vb2_buf, 0);
+ stream->size = vb2_plane_size(&vbuf->vb2_buf, 0);
+ stream->prepared = true;
+
+ dev_dbg(dev,
+ "%s stream[%d] prepared; virt=%p, phy=%pad\n",
+ ctx->name, vb->index,
+ stream->vaddr, &stream->paddr);
+ }
+ }
+
+ return 0;
+}
+
+static void hva_buf_queue(struct vb2_buffer *vb)
+{
+ struct hva_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+
+ if (ctx->fh.m2m_ctx)
+ v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
+}
+
+static int hva_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct hva_ctx *ctx = vb2_get_drv_priv(vq);
+ struct hva_dev *hva = ctx_to_hdev(ctx);
+ struct device *dev = ctx_to_dev(ctx);
+ struct vb2_v4l2_buffer *vbuf;
+ int ret;
+ unsigned int i;
+ bool found = false;
+
+ dev_dbg(dev, "%s %s start streaming\n", ctx->name,
+ to_type_str(vq->type));
+
+ /* open encoder when both start_streaming have been called */
+ if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
+ if (!vb2_start_streaming_called(&ctx->fh.m2m_ctx->cap_q_ctx.q))
+ return 0;
+ } else {
+ if (!vb2_start_streaming_called(&ctx->fh.m2m_ctx->out_q_ctx.q))
+ return 0;
+ }
+
+ /* store the instance context in the instances array */
+ for (i = 0; i < HVA_MAX_INSTANCES; i++) {
+ if (!hva->instances[i]) {
+ hva->instances[i] = ctx;
+ /* save the context identifier in the context */
+ ctx->id = i;
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ dev_err(dev, "%s maximum instances reached\n", ctx->name);
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ hva->nb_of_instances++;
+
+ if (!ctx->enc) {
+ ret = hva_open_encoder(ctx,
+ ctx->streaminfo.streamformat,
+ ctx->frameinfo.pixelformat,
+ &ctx->enc);
+ if (ret < 0)
+ goto err_ctx;
+ }
+
+ return 0;
+
+err_ctx:
+ hva->instances[ctx->id] = NULL;
+ hva->nb_of_instances--;
+err:
+ if (vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ /* return of all pending buffers to vb2 (in queued state) */
+ while ((vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
+ } else {
+ /* return of all pending buffers to vb2 (in queued state) */
+ while ((vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
+ }
+
+ return ret;
+}
+
+static void hva_stop_streaming(struct vb2_queue *vq)
+{
+ struct hva_ctx *ctx = vb2_get_drv_priv(vq);
+ struct hva_dev *hva = ctx_to_hdev(ctx);
+ struct device *dev = ctx_to_dev(ctx);
+ const struct hva_enc *enc = ctx->enc;
+ struct vb2_v4l2_buffer *vbuf;
+
+ dev_dbg(dev, "%s %s stop streaming\n", ctx->name,
+ to_type_str(vq->type));
+
+ if (vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ /* return of all pending buffers to vb2 (in error state) */
+ ctx->frame_num = 0;
+ while ((vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
+ } else {
+ /* return of all pending buffers to vb2 (in error state) */
+ ctx->stream_num = 0;
+ while ((vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
+ }
+
+ if ((V4L2_TYPE_IS_OUTPUT(vq->type) &&
+ vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q)) ||
+ (!V4L2_TYPE_IS_OUTPUT(vq->type) &&
+ vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q))) {
+ dev_dbg(dev, "%s %s out=%d cap=%d\n",
+ ctx->name, to_type_str(vq->type),
+ vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q),
+ vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q));
+ return;
+ }
+
+ /* close encoder when both stop_streaming have been called */
+ if (enc) {
+ dev_dbg(dev, "%s %s encoder closed\n", ctx->name, enc->name);
+ enc->close(ctx);
+ ctx->enc = NULL;
+
+ /* clear instance context in instances array */
+ hva->instances[ctx->id] = NULL;
+ hva->nb_of_instances--;
+ }
+
+ ctx->aborting = false;
+}
+
+/* VB2 queue ops */
+static const struct vb2_ops hva_qops = {
+ .queue_setup = hva_queue_setup,
+ .buf_prepare = hva_buf_prepare,
+ .buf_queue = hva_buf_queue,
+ .start_streaming = hva_start_streaming,
+ .stop_streaming = hva_stop_streaming,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+};
+
+/*
+ * V4L2 file operations
+ */
+
+static int queue_init(struct hva_ctx *ctx, struct vb2_queue *vq)
+{
+ vq->io_modes = VB2_MMAP | VB2_DMABUF;
+ vq->drv_priv = ctx;
+ vq->ops = &hva_qops;
+ vq->mem_ops = &vb2_dma_contig_memops;
+ vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ vq->lock = &ctx->hva_dev->lock;
+
+ return vb2_queue_init(vq);
+}
+
+static int hva_queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct hva_ctx *ctx = priv;
+ int ret;
+
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ src_vq->buf_struct_size = sizeof(struct hva_frame);
+ src_vq->min_buffers_needed = MIN_FRAMES;
+ src_vq->dev = ctx->hva_dev->dev;
+
+ ret = queue_init(ctx, src_vq);
+ if (ret)
+ return ret;
+
+ dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ dst_vq->buf_struct_size = sizeof(struct hva_stream);
+ dst_vq->min_buffers_needed = MIN_STREAMS;
+ dst_vq->dev = ctx->hva_dev->dev;
+
+ return queue_init(ctx, dst_vq);
+}
+
+static int hva_open(struct file *file)
+{
+ struct hva_dev *hva = video_drvdata(file);
+ struct device *dev = hva_to_dev(hva);
+ struct hva_ctx *ctx;
+ int ret;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ ctx->hva_dev = hva;
+
+ INIT_WORK(&ctx->run_work, hva_run_work);
+ v4l2_fh_init(&ctx->fh, video_devdata(file));
+ file->private_data = &ctx->fh;
+ v4l2_fh_add(&ctx->fh);
+
+ ret = hva_ctrls_setup(ctx);
+ if (ret) {
+ dev_err(dev, "%s [x:x] failed to setup controls\n",
+ HVA_PREFIX);
+ goto err_fh;
+ }
+ ctx->fh.ctrl_handler = &ctx->ctrl_handler;
+
+ mutex_init(&ctx->lock);
+
+ ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(hva->m2m_dev, ctx,
+ &hva_queue_init);
+ if (IS_ERR(ctx->fh.m2m_ctx)) {
+ ret = PTR_ERR(ctx->fh.m2m_ctx);
+ dev_err(dev, "%s failed to initialize m2m context (%d)\n",
+ HVA_PREFIX, ret);
+ goto err_ctrls;
+ }
+
+ /* set the instance name */
+ mutex_lock(&hva->lock);
+ hva->instance_id++;
+ snprintf(ctx->name, sizeof(ctx->name), "[%3d:----]",
+ hva->instance_id);
+ mutex_unlock(&hva->lock);
+
+ /* default parameters for frame and stream */
+ set_default_params(ctx);
+
+ dev_info(dev, "%s encoder instance created\n", ctx->name);
+
+ return 0;
+
+err_ctrls:
+ v4l2_ctrl_handler_free(&ctx->ctrl_handler);
+err_fh:
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ kfree(ctx);
+out:
+ return ret;
+}
+
+static int hva_release(struct file *file)
+{
+ struct hva_ctx *ctx = fh_to_ctx(file->private_data);
+ struct hva_dev *hva = ctx_to_hdev(ctx);
+ struct device *dev = ctx_to_dev(ctx);
+ const struct hva_enc *enc = ctx->enc;
+
+ if (enc) {
+ dev_dbg(dev, "%s %s encoder closed\n", ctx->name, enc->name);
+ enc->close(ctx);
+ ctx->enc = NULL;
+
+ /* clear instance context in instances array */
+ hva->instances[ctx->id] = NULL;
+ hva->nb_of_instances--;
+ }
+
+ v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
+
+ v4l2_ctrl_handler_free(&ctx->ctrl_handler);
+
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+
+ dev_info(dev, "%s encoder instance released\n", ctx->name);
+
+ kfree(ctx);
+
+ return 0;
+}
+
+/* V4L2 file ops */
+static const struct v4l2_file_operations hva_fops = {
+ .owner = THIS_MODULE,
+ .open = hva_open,
+ .release = hva_release,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = v4l2_m2m_fop_mmap,
+ .poll = v4l2_m2m_fop_poll,
+};
+
+/*
+ * Platform device operations
+ */
+
+static int hva_register_device(struct hva_dev *hva)
+{
+ int ret;
+ struct video_device *vdev;
+ struct device *dev;
+
+ if (!hva)
+ return -ENODEV;
+ dev = hva_to_dev(hva);
+
+ hva->m2m_dev = v4l2_m2m_init(&hva_m2m_ops);
+ if (IS_ERR(hva->m2m_dev)) {
+ dev_err(dev, "%s failed to initialize v4l2-m2m device\n",
+ HVA_PREFIX);
+ ret = PTR_ERR(hva->m2m_dev);
+ goto err;
+ }
+
+ vdev = video_device_alloc();
+ if (!vdev) {
+ dev_err(dev, "%s failed to allocate video device\n",
+ HVA_PREFIX);
+ ret = -ENOMEM;
+ goto err_m2m_release;
+ }
+
+ vdev->fops = &hva_fops;
+ vdev->ioctl_ops = &hva_ioctl_ops;
+ vdev->release = video_device_release;
+ vdev->lock = &hva->lock;
+ vdev->vfl_dir = VFL_DIR_M2M;
+ vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M;
+ vdev->v4l2_dev = &hva->v4l2_dev;
+ snprintf(vdev->name, sizeof(vdev->name), "%s%lx", HVA_NAME,
+ hva->ip_version);
+
+ ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ dev_err(dev, "%s failed to register video device\n",
+ HVA_PREFIX);
+ goto err_vdev_release;
+ }
+
+ hva->vdev = vdev;
+ video_set_drvdata(vdev, hva);
+ return 0;
+
+err_vdev_release:
+ video_device_release(vdev);
+err_m2m_release:
+ v4l2_m2m_release(hva->m2m_dev);
+err:
+ return ret;
+}
+
+static void hva_unregister_device(struct hva_dev *hva)
+{
+ if (!hva)
+ return;
+
+ if (hva->m2m_dev)
+ v4l2_m2m_release(hva->m2m_dev);
+
+ video_unregister_device(hva->vdev);
+}
+
+static int hva_probe(struct platform_device *pdev)
+{
+ struct hva_dev *hva;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ hva = devm_kzalloc(dev, sizeof(*hva), GFP_KERNEL);
+ if (!hva) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ hva->dev = dev;
+ hva->pdev = pdev;
+ platform_set_drvdata(pdev, hva);
+
+ mutex_init(&hva->lock);
+
+ /* probe hardware */
+ ret = hva_hw_probe(pdev, hva);
+ if (ret)
+ goto err;
+
+ /* register all available encoders */
+ register_encoders(hva);
+
+ /* register all supported formats */
+ register_formats(hva);
+
+ /* register on V4L2 */
+ ret = v4l2_device_register(dev, &hva->v4l2_dev);
+ if (ret) {
+ dev_err(dev, "%s %s failed to register V4L2 device\n",
+ HVA_PREFIX, HVA_NAME);
+ goto err_hw;
+ }
+
+ hva->work_queue = create_workqueue(HVA_NAME);
+ if (!hva->work_queue) {
+ dev_err(dev, "%s %s failed to allocate work queue\n",
+ HVA_PREFIX, HVA_NAME);
+ ret = -ENOMEM;
+ goto err_v4l2;
+ }
+
+ /* register device */
+ ret = hva_register_device(hva);
+ if (ret)
+ goto err_work_queue;
+
+ dev_info(dev, "%s %s registered as /dev/video%d\n", HVA_PREFIX,
+ HVA_NAME, hva->vdev->num);
+
+ return 0;
+
+err_work_queue:
+ destroy_workqueue(hva->work_queue);
+err_v4l2:
+ v4l2_device_unregister(&hva->v4l2_dev);
+err_hw:
+ hva_hw_remove(hva);
+err:
+ return ret;
+}
+
+static int hva_remove(struct platform_device *pdev)
+{
+ struct hva_dev *hva = platform_get_drvdata(pdev);
+ struct device *dev = hva_to_dev(hva);
+
+ hva_unregister_device(hva);
+
+ destroy_workqueue(hva->work_queue);
+
+ hva_hw_remove(hva);
+
+ v4l2_device_unregister(&hva->v4l2_dev);
+
+ dev_info(dev, "%s %s removed\n", HVA_PREFIX, pdev->name);
+
+ return 0;
+}
+
+/* PM ops */
+static const struct dev_pm_ops hva_pm_ops = {
+ .runtime_suspend = hva_hw_runtime_suspend,
+ .runtime_resume = hva_hw_runtime_resume,
+};
+
+static const struct of_device_id hva_match_types[] = {
+ {
+ .compatible = "st,st-hva",
+ },
+ { /* end node */ }
+};
+
+MODULE_DEVICE_TABLE(of, hva_match_types);
+
+struct platform_driver hva_driver = {
+ .probe = hva_probe,
+ .remove = hva_remove,
+ .driver = {
+ .name = HVA_NAME,
+ .of_match_table = hva_match_types,
+ .pm = &hva_pm_ops,
+ },
+};
+
+module_platform_driver(hva_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Yannick Fertre <yannick.fertre@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics HVA video encoder V4L2 driver");
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 00:48:18 +0000