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path: root/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c
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Diffstat (limited to 'drivers/media/platform/renesas/vsp1/vsp1_rwpf.c')
-rw-r--r--drivers/media/platform/renesas/vsp1/vsp1_rwpf.c287
1 files changed, 287 insertions, 0 deletions
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c b/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c
new file mode 100644
index 000000000..22a82d218
--- /dev/null
+++ b/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c
@@ -0,0 +1,287 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * vsp1_rwpf.c -- R-Car VSP1 Read and Write Pixel Formatters
+ *
+ * Copyright (C) 2013-2014 Renesas Electronics Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ */
+
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_rwpf.h"
+#include "vsp1_video.h"
+
+#define RWPF_MIN_WIDTH 1
+#define RWPF_MIN_HEIGHT 1
+
+struct v4l2_rect *vsp1_rwpf_get_crop(struct vsp1_rwpf *rwpf,
+ struct v4l2_subdev_state *sd_state)
+{
+ return v4l2_subdev_get_try_crop(&rwpf->entity.subdev, sd_state,
+ RWPF_PAD_SINK);
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Pad Operations
+ */
+
+static int vsp1_rwpf_enum_mbus_code(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ static const unsigned int codes[] = {
+ MEDIA_BUS_FMT_ARGB8888_1X32,
+ MEDIA_BUS_FMT_AHSV8888_1X32,
+ MEDIA_BUS_FMT_AYUV8_1X32,
+ };
+
+ if (code->index >= ARRAY_SIZE(codes))
+ return -EINVAL;
+
+ code->code = codes[code->index];
+
+ return 0;
+}
+
+static int vsp1_rwpf_enum_frame_size(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct vsp1_rwpf *rwpf = to_rwpf(subdev);
+
+ return vsp1_subdev_enum_frame_size(subdev, sd_state, fse,
+ RWPF_MIN_WIDTH,
+ RWPF_MIN_HEIGHT, rwpf->max_width,
+ rwpf->max_height);
+}
+
+static int vsp1_rwpf_set_format(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *fmt)
+{
+ struct vsp1_rwpf *rwpf = to_rwpf(subdev);
+ struct v4l2_subdev_state *config;
+ struct v4l2_mbus_framefmt *format;
+ int ret = 0;
+
+ mutex_lock(&rwpf->entity.lock);
+
+ config = vsp1_entity_get_pad_config(&rwpf->entity, sd_state,
+ fmt->which);
+ if (!config) {
+ ret = -EINVAL;
+ goto done;
+ }
+
+ /* Default to YUV if the requested format is not supported. */
+ if (fmt->format.code != MEDIA_BUS_FMT_ARGB8888_1X32 &&
+ fmt->format.code != MEDIA_BUS_FMT_AHSV8888_1X32 &&
+ fmt->format.code != MEDIA_BUS_FMT_AYUV8_1X32)
+ fmt->format.code = MEDIA_BUS_FMT_AYUV8_1X32;
+
+ format = vsp1_entity_get_pad_format(&rwpf->entity, config, fmt->pad);
+
+ if (fmt->pad == RWPF_PAD_SOURCE) {
+ /*
+ * The RWPF performs format conversion but can't scale, only the
+ * format code can be changed on the source pad.
+ */
+ format->code = fmt->format.code;
+ fmt->format = *format;
+ goto done;
+ }
+
+ format->code = fmt->format.code;
+ format->width = clamp_t(unsigned int, fmt->format.width,
+ RWPF_MIN_WIDTH, rwpf->max_width);
+ format->height = clamp_t(unsigned int, fmt->format.height,
+ RWPF_MIN_HEIGHT, rwpf->max_height);
+ format->field = V4L2_FIELD_NONE;
+ format->colorspace = V4L2_COLORSPACE_SRGB;
+
+ fmt->format = *format;
+
+ if (rwpf->entity.type == VSP1_ENTITY_RPF) {
+ struct v4l2_rect *crop;
+
+ /* Update the sink crop rectangle. */
+ crop = vsp1_rwpf_get_crop(rwpf, config);
+ crop->left = 0;
+ crop->top = 0;
+ crop->width = fmt->format.width;
+ crop->height = fmt->format.height;
+ }
+
+ /* Propagate the format to the source pad. */
+ format = vsp1_entity_get_pad_format(&rwpf->entity, config,
+ RWPF_PAD_SOURCE);
+ *format = fmt->format;
+
+ if (rwpf->flip.rotate) {
+ format->width = fmt->format.height;
+ format->height = fmt->format.width;
+ }
+
+done:
+ mutex_unlock(&rwpf->entity.lock);
+ return ret;
+}
+
+static int vsp1_rwpf_get_selection(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_selection *sel)
+{
+ struct vsp1_rwpf *rwpf = to_rwpf(subdev);
+ struct v4l2_subdev_state *config;
+ struct v4l2_mbus_framefmt *format;
+ int ret = 0;
+
+ /*
+ * Cropping is only supported on the RPF and is implemented on the sink
+ * pad.
+ */
+ if (rwpf->entity.type == VSP1_ENTITY_WPF || sel->pad != RWPF_PAD_SINK)
+ return -EINVAL;
+
+ mutex_lock(&rwpf->entity.lock);
+
+ config = vsp1_entity_get_pad_config(&rwpf->entity, sd_state,
+ sel->which);
+ if (!config) {
+ ret = -EINVAL;
+ goto done;
+ }
+
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP:
+ sel->r = *vsp1_rwpf_get_crop(rwpf, config);
+ break;
+
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ format = vsp1_entity_get_pad_format(&rwpf->entity, config,
+ RWPF_PAD_SINK);
+ sel->r.left = 0;
+ sel->r.top = 0;
+ sel->r.width = format->width;
+ sel->r.height = format->height;
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+done:
+ mutex_unlock(&rwpf->entity.lock);
+ return ret;
+}
+
+static int vsp1_rwpf_set_selection(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_selection *sel)
+{
+ struct vsp1_rwpf *rwpf = to_rwpf(subdev);
+ struct v4l2_subdev_state *config;
+ struct v4l2_mbus_framefmt *format;
+ struct v4l2_rect *crop;
+ int ret = 0;
+
+ /*
+ * Cropping is only supported on the RPF and is implemented on the sink
+ * pad.
+ */
+ if (rwpf->entity.type == VSP1_ENTITY_WPF || sel->pad != RWPF_PAD_SINK)
+ return -EINVAL;
+
+ if (sel->target != V4L2_SEL_TGT_CROP)
+ return -EINVAL;
+
+ mutex_lock(&rwpf->entity.lock);
+
+ config = vsp1_entity_get_pad_config(&rwpf->entity, sd_state,
+ sel->which);
+ if (!config) {
+ ret = -EINVAL;
+ goto done;
+ }
+
+ /* Make sure the crop rectangle is entirely contained in the image. */
+ format = vsp1_entity_get_pad_format(&rwpf->entity, config,
+ RWPF_PAD_SINK);
+
+ /*
+ * Restrict the crop rectangle coordinates to multiples of 2 to avoid
+ * shifting the color plane.
+ */
+ if (format->code == MEDIA_BUS_FMT_AYUV8_1X32) {
+ sel->r.left = ALIGN(sel->r.left, 2);
+ sel->r.top = ALIGN(sel->r.top, 2);
+ sel->r.width = round_down(sel->r.width, 2);
+ sel->r.height = round_down(sel->r.height, 2);
+ }
+
+ sel->r.left = min_t(unsigned int, sel->r.left, format->width - 2);
+ sel->r.top = min_t(unsigned int, sel->r.top, format->height - 2);
+ sel->r.width = min_t(unsigned int, sel->r.width,
+ format->width - sel->r.left);
+ sel->r.height = min_t(unsigned int, sel->r.height,
+ format->height - sel->r.top);
+
+ crop = vsp1_rwpf_get_crop(rwpf, config);
+ *crop = sel->r;
+
+ /* Propagate the format to the source pad. */
+ format = vsp1_entity_get_pad_format(&rwpf->entity, config,
+ RWPF_PAD_SOURCE);
+ format->width = crop->width;
+ format->height = crop->height;
+
+done:
+ mutex_unlock(&rwpf->entity.lock);
+ return ret;
+}
+
+const struct v4l2_subdev_pad_ops vsp1_rwpf_pad_ops = {
+ .init_cfg = vsp1_entity_init_cfg,
+ .enum_mbus_code = vsp1_rwpf_enum_mbus_code,
+ .enum_frame_size = vsp1_rwpf_enum_frame_size,
+ .get_fmt = vsp1_subdev_get_pad_format,
+ .set_fmt = vsp1_rwpf_set_format,
+ .get_selection = vsp1_rwpf_get_selection,
+ .set_selection = vsp1_rwpf_set_selection,
+};
+
+/* -----------------------------------------------------------------------------
+ * Controls
+ */
+
+static int vsp1_rwpf_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct vsp1_rwpf *rwpf =
+ container_of(ctrl->handler, struct vsp1_rwpf, ctrls);
+
+ switch (ctrl->id) {
+ case V4L2_CID_ALPHA_COMPONENT:
+ rwpf->alpha = ctrl->val;
+ break;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops vsp1_rwpf_ctrl_ops = {
+ .s_ctrl = vsp1_rwpf_s_ctrl,
+};
+
+int vsp1_rwpf_init_ctrls(struct vsp1_rwpf *rwpf, unsigned int ncontrols)
+{
+ v4l2_ctrl_handler_init(&rwpf->ctrls, ncontrols + 1);
+ v4l2_ctrl_new_std(&rwpf->ctrls, &vsp1_rwpf_ctrl_ops,
+ V4L2_CID_ALPHA_COMPONENT, 0, 255, 1, 255);
+
+ rwpf->entity.subdev.ctrl_handler = &rwpf->ctrls;
+
+ return rwpf->ctrls.error;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 21:22:37 +0000