Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 264 insertions, 0 deletions

diff --git a/drivers/media/platform/vsp1/vsp1_uif.c b/drivers/media/platform/vsp1/vsp1_uif.c
new file mode 100644
index 000000000..4b58d51df
--- /dev/null
+++ b/drivers/media/platform/vsp1/vsp1_uif.c
@@ -0,0 +1,264 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * vsp1_uif.c  --  R-Car VSP1 User Logic Interface
+ *
+ * Copyright (C) 2017-2018 Laurent Pinchart
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ */
+
+#include <linux/device.h>
+#include <linux/gfp.h>
+#include <linux/sys_soc.h>
+
+#include <media/media-entity.h>
+#include <media/v4l2-subdev.h>
+
+#include "vsp1.h"
+#include "vsp1_dl.h"
+#include "vsp1_entity.h"
+#include "vsp1_uif.h"
+
+#define UIF_MIN_SIZE				4U
+#define UIF_MAX_SIZE				8190U
+
+/* -----------------------------------------------------------------------------
+ * Device Access
+ */
+
+static inline u32 vsp1_uif_read(struct vsp1_uif *uif, u32 reg)
+{
+	return vsp1_read(uif->entity.vsp1,
+			 uif->entity.index * VI6_UIF_OFFSET + reg);
+}
+
+static inline void vsp1_uif_write(struct vsp1_uif *uif,
+				  struct vsp1_dl_body *dlb, u32 reg, u32 data)
+{
+	vsp1_dl_body_write(dlb, reg + uif->entity.index * VI6_UIF_OFFSET, data);
+}
+
+u32 vsp1_uif_get_crc(struct vsp1_uif *uif)
+{
+	return vsp1_uif_read(uif, VI6_UIF_DISCOM_DOCMCCRCR);
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Pad Operations
+ */
+
+static const unsigned int uif_codes[] = {
+	MEDIA_BUS_FMT_ARGB8888_1X32,
+	MEDIA_BUS_FMT_AHSV8888_1X32,
+	MEDIA_BUS_FMT_AYUV8_1X32,
+};
+
+static int uif_enum_mbus_code(struct v4l2_subdev *subdev,
+			      struct v4l2_subdev_pad_config *cfg,
+			      struct v4l2_subdev_mbus_code_enum *code)
+{
+	return vsp1_subdev_enum_mbus_code(subdev, cfg, code, uif_codes,
+					  ARRAY_SIZE(uif_codes));
+}
+
+static int uif_enum_frame_size(struct v4l2_subdev *subdev,
+			       struct v4l2_subdev_pad_config *cfg,
+			       struct v4l2_subdev_frame_size_enum *fse)
+{
+	return vsp1_subdev_enum_frame_size(subdev, cfg, fse, UIF_MIN_SIZE,
+					   UIF_MIN_SIZE, UIF_MAX_SIZE,
+					   UIF_MAX_SIZE);
+}
+
+static int uif_set_format(struct v4l2_subdev *subdev,
+			    struct v4l2_subdev_pad_config *cfg,
+			    struct v4l2_subdev_format *fmt)
+{
+	return vsp1_subdev_set_pad_format(subdev, cfg, fmt, uif_codes,
+					  ARRAY_SIZE(uif_codes),
+					  UIF_MIN_SIZE, UIF_MIN_SIZE,
+					  UIF_MAX_SIZE, UIF_MAX_SIZE);
+}
+
+static int uif_get_selection(struct v4l2_subdev *subdev,
+			     struct v4l2_subdev_pad_config *cfg,
+			     struct v4l2_subdev_selection *sel)
+{
+	struct vsp1_uif *uif = to_uif(subdev);
+	struct v4l2_subdev_pad_config *config;
+	struct v4l2_mbus_framefmt *format;
+	int ret = 0;
+
+	if (sel->pad != UIF_PAD_SINK)
+		return -EINVAL;
+
+	mutex_lock(&uif->entity.lock);
+
+	config = vsp1_entity_get_pad_config(&uif->entity, cfg, sel->which);
+	if (!config) {
+		ret = -EINVAL;
+		goto done;
+	}
+
+	switch (sel->target) {
+	case V4L2_SEL_TGT_CROP_BOUNDS:
+	case V4L2_SEL_TGT_CROP_DEFAULT:
+		format = vsp1_entity_get_pad_format(&uif->entity, config,
+						    UIF_PAD_SINK);
+		sel->r.left = 0;
+		sel->r.top = 0;
+		sel->r.width = format->width;
+		sel->r.height = format->height;
+		break;
+
+	case V4L2_SEL_TGT_CROP:
+		sel->r = *vsp1_entity_get_pad_selection(&uif->entity, config,
+							sel->pad, sel->target);
+		break;
+
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+done:
+	mutex_unlock(&uif->entity.lock);
+	return ret;
+}
+
+static int uif_set_selection(struct v4l2_subdev *subdev,
+			     struct v4l2_subdev_pad_config *cfg,
+			     struct v4l2_subdev_selection *sel)
+{
+	struct vsp1_uif *uif = to_uif(subdev);
+	struct v4l2_subdev_pad_config *config;
+	struct v4l2_mbus_framefmt *format;
+	struct v4l2_rect *selection;
+	int ret = 0;
+
+	if (sel->pad != UIF_PAD_SINK ||
+	    sel->target != V4L2_SEL_TGT_CROP)
+		return -EINVAL;
+
+	mutex_lock(&uif->entity.lock);
+
+	config = vsp1_entity_get_pad_config(&uif->entity, cfg, sel->which);
+	if (!config) {
+		ret = -EINVAL;
+		goto done;
+	}
+
+	/* The crop rectangle must be inside the input frame. */
+	format = vsp1_entity_get_pad_format(&uif->entity, config, UIF_PAD_SINK);
+
+	sel->r.left = clamp_t(unsigned int, sel->r.left, 0, format->width - 1);
+	sel->r.top = clamp_t(unsigned int, sel->r.top, 0, format->height - 1);
+	sel->r.width = clamp_t(unsigned int, sel->r.width, UIF_MIN_SIZE,
+			       format->width - sel->r.left);
+	sel->r.height = clamp_t(unsigned int, sel->r.height, UIF_MIN_SIZE,
+				format->height - sel->r.top);
+
+	/* Store the crop rectangle. */
+	selection = vsp1_entity_get_pad_selection(&uif->entity, config,
+						  sel->pad, V4L2_SEL_TGT_CROP);
+	*selection = sel->r;
+
+done:
+	mutex_unlock(&uif->entity.lock);
+	return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Operations
+ */
+
+static const struct v4l2_subdev_pad_ops uif_pad_ops = {
+	.init_cfg = vsp1_entity_init_cfg,
+	.enum_mbus_code = uif_enum_mbus_code,
+	.enum_frame_size = uif_enum_frame_size,
+	.get_fmt = vsp1_subdev_get_pad_format,
+	.set_fmt = uif_set_format,
+	.get_selection = uif_get_selection,
+	.set_selection = uif_set_selection,
+};
+
+static const struct v4l2_subdev_ops uif_ops = {
+	.pad    = &uif_pad_ops,
+};
+
+/* -----------------------------------------------------------------------------
+ * VSP1 Entity Operations
+ */
+
+static void uif_configure_stream(struct vsp1_entity *entity,
+				 struct vsp1_pipeline *pipe,
+				 struct vsp1_dl_body *dlb)
+{
+	struct vsp1_uif *uif = to_uif(&entity->subdev);
+	const struct v4l2_rect *crop;
+	unsigned int left;
+	unsigned int width;
+
+	vsp1_uif_write(uif, dlb, VI6_UIF_DISCOM_DOCMPMR,
+		       VI6_UIF_DISCOM_DOCMPMR_SEL(9));
+
+	crop = vsp1_entity_get_pad_selection(entity, entity->config,
+					     UIF_PAD_SINK, V4L2_SEL_TGT_CROP);
+
+	left = crop->left;
+	width = crop->width;
+
+	/* On M3-W the horizontal coordinates are twice the register value. */
+	if (uif->m3w_quirk) {
+		left /= 2;
+		width /= 2;
+	}
+
+	vsp1_uif_write(uif, dlb, VI6_UIF_DISCOM_DOCMSPXR, left);
+	vsp1_uif_write(uif, dlb, VI6_UIF_DISCOM_DOCMSPYR, crop->top);
+	vsp1_uif_write(uif, dlb, VI6_UIF_DISCOM_DOCMSZXR, width);
+	vsp1_uif_write(uif, dlb, VI6_UIF_DISCOM_DOCMSZYR, crop->height);
+
+	vsp1_uif_write(uif, dlb, VI6_UIF_DISCOM_DOCMCR,
+		       VI6_UIF_DISCOM_DOCMCR_CMPR);
+}
+
+static const struct vsp1_entity_operations uif_entity_ops = {
+	.configure_stream = uif_configure_stream,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization and Cleanup
+ */
+
+static const struct soc_device_attribute vsp1_r8a7796[] = {
+	{ .soc_id = "r8a7796" },
+	{ /* sentinel */ }
+};
+
+struct vsp1_uif *vsp1_uif_create(struct vsp1_device *vsp1, unsigned int index)
+{
+	struct vsp1_uif *uif;
+	char name[6];
+	int ret;
+
+	uif = devm_kzalloc(vsp1->dev, sizeof(*uif), GFP_KERNEL);
+	if (!uif)
+		return ERR_PTR(-ENOMEM);
+
+	if (soc_device_match(vsp1_r8a7796))
+		uif->m3w_quirk = true;
+
+	uif->entity.ops = &uif_entity_ops;
+	uif->entity.type = VSP1_ENTITY_UIF;
+	uif->entity.index = index;
+
+	/* The datasheet names the two UIF instances UIF4 and UIF5. */
+	sprintf(name, "uif.%u", index + 4);
+	ret = vsp1_entity_init(vsp1, &uif->entity, name, 2, &uif_ops,
+			       MEDIA_ENT_F_PROC_VIDEO_STATISTICS);
+	if (ret < 0)
+		return ERR_PTR(ret);
+
+	return uif;
+}