--- /dev/null
+/*
+ * vsp1_rpf.c -- R-Car VSP1 Read Pixel Formatter
+ *
+ * Copyright (C) 2013-2014 Renesas Electronics Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/device.h>
+
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_rwpf.h"
+#include "vsp1_video.h"
+
+#define RPF_MAX_WIDTH 8190
+#define RPF_MAX_HEIGHT 8190
+
+/* -----------------------------------------------------------------------------
+ * Device Access
+ */
+
+static inline u32 vsp1_rpf_read(struct vsp1_rwpf *rpf, u32 reg)
+{
+ return vsp1_read(rpf->entity.vsp1,
+ reg + rpf->entity.index * VI6_RPF_OFFSET);
+}
+
+static inline void vsp1_rpf_write(struct vsp1_rwpf *rpf, u32 reg, u32 data)
+{
+ vsp1_write(rpf->entity.vsp1,
+ reg + rpf->entity.index * VI6_RPF_OFFSET, data);
+}
+
+/* -----------------------------------------------------------------------------
+ * Controls
+ */
+
+static int rpf_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct vsp1_rwpf *rpf =
+ container_of(ctrl->handler, struct vsp1_rwpf, ctrls);
+ struct vsp1_pipeline *pipe;
+
+ if (!vsp1_entity_is_streaming(&rpf->entity))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_ALPHA_COMPONENT:
+ vsp1_rpf_write(rpf, VI6_RPF_VRTCOL_SET,
+ ctrl->val << VI6_RPF_VRTCOL_SET_LAYA_SHIFT);
+
+ pipe = to_vsp1_pipeline(&rpf->entity.subdev.entity);
+ vsp1_pipeline_propagate_alpha(pipe, &rpf->entity, ctrl->val);
+ break;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops rpf_ctrl_ops = {
+ .s_ctrl = rpf_s_ctrl,
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Core Operations
+ */
+
+static int rpf_s_stream(struct v4l2_subdev *subdev, int enable)
+{
+ struct vsp1_rwpf *rpf = to_rwpf(subdev);
+ const struct vsp1_format_info *fmtinfo = rpf->video.fmtinfo;
+ const struct v4l2_pix_format_mplane *format = &rpf->video.format;
+ const struct v4l2_rect *crop = &rpf->crop;
+ u32 pstride;
+ u32 infmt;
+ int ret;
+
+ ret = vsp1_entity_set_streaming(&rpf->entity, enable);
+ if (ret < 0)
+ return ret;
+
+ if (!enable)
+ return 0;
+
+ /* Source size, stride and crop offsets.
+ *
+ * The crop offsets correspond to the location of the crop rectangle top
+ * left corner in the plane buffer. Only two offsets are needed, as
+ * planes 2 and 3 always have identical strides.
+ */
+ vsp1_rpf_write(rpf, VI6_RPF_SRC_BSIZE,
+ (crop->width << VI6_RPF_SRC_BSIZE_BHSIZE_SHIFT) |
+ (crop->height << VI6_RPF_SRC_BSIZE_BVSIZE_SHIFT));
+ vsp1_rpf_write(rpf, VI6_RPF_SRC_ESIZE,
+ (crop->width << VI6_RPF_SRC_ESIZE_EHSIZE_SHIFT) |
+ (crop->height << VI6_RPF_SRC_ESIZE_EVSIZE_SHIFT));
+
+ rpf->offsets[0] = crop->top * format->plane_fmt[0].bytesperline
+ + crop->left * fmtinfo->bpp[0] / 8;
+ pstride = format->plane_fmt[0].bytesperline
+ << VI6_RPF_SRCM_PSTRIDE_Y_SHIFT;
+
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_Y,
+ rpf->buf_addr[0] + rpf->offsets[0]);
+
+ if (format->num_planes > 1) {
+ rpf->offsets[1] = crop->top * format->plane_fmt[1].bytesperline
+ + crop->left * fmtinfo->bpp[1] / 8;
+ pstride |= format->plane_fmt[1].bytesperline
+ << VI6_RPF_SRCM_PSTRIDE_C_SHIFT;
+
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_C0,
+ rpf->buf_addr[1] + rpf->offsets[1]);
+
+ if (format->num_planes > 2)
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_C1,
+ rpf->buf_addr[2] + rpf->offsets[1]);
+ }
+
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_PSTRIDE, pstride);
+
+ /* Format */
+ infmt = VI6_RPF_INFMT_CIPM
+ | (fmtinfo->hwfmt << VI6_RPF_INFMT_RDFMT_SHIFT);
+
+ if (fmtinfo->swap_yc)
+ infmt |= VI6_RPF_INFMT_SPYCS;
+ if (fmtinfo->swap_uv)
+ infmt |= VI6_RPF_INFMT_SPUVS;
+
+ if (rpf->entity.formats[RWPF_PAD_SINK].code !=
+ rpf->entity.formats[RWPF_PAD_SOURCE].code)
+ infmt |= VI6_RPF_INFMT_CSC;
+
+ vsp1_rpf_write(rpf, VI6_RPF_INFMT, infmt);
+ vsp1_rpf_write(rpf, VI6_RPF_DSWAP, fmtinfo->swap);
+
+ /* Output location */
+ vsp1_rpf_write(rpf, VI6_RPF_LOC,
+ (rpf->location.left << VI6_RPF_LOC_HCOORD_SHIFT) |
+ (rpf->location.top << VI6_RPF_LOC_VCOORD_SHIFT));
+
+ /* Use the alpha channel (extended to 8 bits) when available or an
+ * alpha value set through the V4L2_CID_ALPHA_COMPONENT control
+ * otherwise. Disable color keying.
+ */
+ vsp1_rpf_write(rpf, VI6_RPF_ALPH_SEL, VI6_RPF_ALPH_SEL_AEXT_EXT |
+ (fmtinfo->alpha ? VI6_RPF_ALPH_SEL_ASEL_PACKED
+ : VI6_RPF_ALPH_SEL_ASEL_FIXED));
+ vsp1_rpf_write(rpf, VI6_RPF_MSK_CTRL, 0);
+ vsp1_rpf_write(rpf, VI6_RPF_CKEY_CTRL, 0);
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Operations
+ */
+
+static struct v4l2_subdev_video_ops rpf_video_ops = {
+ .s_stream = rpf_s_stream,
+};
+
+static struct v4l2_subdev_pad_ops rpf_pad_ops = {
+ .enum_mbus_code = vsp1_rwpf_enum_mbus_code,
+ .enum_frame_size = vsp1_rwpf_enum_frame_size,
+ .get_fmt = vsp1_rwpf_get_format,
+ .set_fmt = vsp1_rwpf_set_format,
+ .get_selection = vsp1_rwpf_get_selection,
+ .set_selection = vsp1_rwpf_set_selection,
+};
+
+static struct v4l2_subdev_ops rpf_ops = {
+ .video = &rpf_video_ops,
+ .pad = &rpf_pad_ops,
+};
+
+/* -----------------------------------------------------------------------------
+ * Video Device Operations
+ */
+
+static void rpf_vdev_queue(struct vsp1_video *video,
+ struct vsp1_video_buffer *buf)
+{
+ struct vsp1_rwpf *rpf = container_of(video, struct vsp1_rwpf, video);
+ unsigned int i;
+
+ for (i = 0; i < 3; ++i)
+ rpf->buf_addr[i] = buf->addr[i];
+
+ if (!vsp1_entity_is_streaming(&rpf->entity))
+ return;
+
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_Y,
+ buf->addr[0] + rpf->offsets[0]);
+ if (buf->buf.num_planes > 1)
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_C0,
+ buf->addr[1] + rpf->offsets[1]);
+ if (buf->buf.num_planes > 2)
+ vsp1_rpf_write(rpf, VI6_RPF_SRCM_ADDR_C1,
+ buf->addr[2] + rpf->offsets[1]);
+}
+
+static const struct vsp1_video_operations rpf_vdev_ops = {
+ .queue = rpf_vdev_queue,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization and Cleanup
+ */
+
+struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index)
+{
+ struct v4l2_subdev *subdev;
+ struct vsp1_video *video;
+ struct vsp1_rwpf *rpf;
+ int ret;
+
+ rpf = devm_kzalloc(vsp1->dev, sizeof(*rpf), GFP_KERNEL);
+ if (rpf == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ rpf->max_width = RPF_MAX_WIDTH;
+ rpf->max_height = RPF_MAX_HEIGHT;
+
+ rpf->entity.type = VSP1_ENTITY_RPF;
+ rpf->entity.index = index;
+
+ ret = vsp1_entity_init(vsp1, &rpf->entity, 2);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ /* Initialize the V4L2 subdev. */
+ subdev = &rpf->entity.subdev;
+ v4l2_subdev_init(subdev, &rpf_ops);
+
+ subdev->entity.ops = &vsp1_media_ops;
+ subdev->internal_ops = &vsp1_subdev_internal_ops;
+ snprintf(subdev->name, sizeof(subdev->name), "%s rpf.%u",
+ dev_name(vsp1->dev), index);
+ v4l2_set_subdevdata(subdev, rpf);
+ subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ vsp1_entity_init_formats(subdev, NULL);
+
+ /* Initialize the control handler. */
+ v4l2_ctrl_handler_init(&rpf->ctrls, 1);
+ v4l2_ctrl_new_std(&rpf->ctrls, &rpf_ctrl_ops, V4L2_CID_ALPHA_COMPONENT,
+ 0, 255, 1, 255);
+
+ rpf->entity.subdev.ctrl_handler = &rpf->ctrls;
+
+ if (rpf->ctrls.error) {
+ dev_err(vsp1->dev, "rpf%u: failed to initialize controls\n",
+ index);
+ ret = rpf->ctrls.error;
+ goto error;
+ }
+
+ /* Initialize the video device. */
+ video = &rpf->video;
+
+ video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+ video->vsp1 = vsp1;
+ video->ops = &rpf_vdev_ops;
+
+ ret = vsp1_video_init(video, &rpf->entity);
+ if (ret < 0)
+ goto error;
+
+ rpf->entity.video = video;
+
+ /* Connect the video device to the RPF. */
+ ret = media_entity_create_link(&rpf->video.video.entity, 0,
+ &rpf->entity.subdev.entity,
+ RWPF_PAD_SINK,
+ MEDIA_LNK_FL_ENABLED |
+ MEDIA_LNK_FL_IMMUTABLE);
+ if (ret < 0)
+ goto error;
+
+ return rpf;
+
+error:
+ vsp1_entity_destroy(&rpf->entity);
+ return ERR_PTR(ret);
+}
Code Review / kvmfornfv.git / blobdiff