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path: root/drivers/media/platform/rcar-vin/rcar-vin.h
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Diffstat (limited to 'drivers/media/platform/rcar-vin/rcar-vin.h')
-rw-r--r--drivers/media/platform/rcar-vin/rcar-vin.h146
1 files changed, 120 insertions, 26 deletions
diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h
index 95897127cc41..c2aef789b491 100644
--- a/drivers/media/platform/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/rcar-vin/rcar-vin.h
@@ -17,6 +17,8 @@
#ifndef __RCAR_VIN__
#define __RCAR_VIN__
+#include <linux/kref.h>
+
#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-dev.h>
@@ -29,10 +31,24 @@
/* Address alignment mask for HW buffers */
#define HW_BUFFER_MASK 0x7f
-enum chip_id {
+/* Max number on VIN instances that can be in a system */
+#define RCAR_VIN_NUM 8
+
+struct rvin_group;
+
+enum model_id {
RCAR_H1,
RCAR_M1,
RCAR_GEN2,
+ RCAR_GEN3,
+};
+
+enum rvin_csi_id {
+ RVIN_CSI20,
+ RVIN_CSI21,
+ RVIN_CSI40,
+ RVIN_CSI41,
+ RVIN_CSI_MAX,
};
/**
@@ -47,16 +63,6 @@ enum rvin_dma_state {
};
/**
- * struct rvin_source_fmt - Source information
- * @width: Width from source
- * @height: Height from source
- */
-struct rvin_source_fmt {
- u32 width;
- u32 height;
-};
-
-/**
* struct rvin_video_format - Data format stored in memory
* @fourcc: Pixelformat
* @bpp: Bytes per pixel
@@ -70,8 +76,6 @@ struct rvin_video_format {
* struct rvin_graph_entity - Video endpoint from async framework
* @asd: sub-device descriptor for async framework
* @subdev: subdevice matched using async framework
- * @code: Media bus format from source
- * @mbus_cfg: Media bus format from DT
* @source_pad: source pad of remote subdevice
* @sink_pad: sink pad of remote subdevice
*/
@@ -79,18 +83,64 @@ struct rvin_graph_entity {
struct v4l2_async_subdev asd;
struct v4l2_subdev *subdev;
- u32 code;
- struct v4l2_mbus_config mbus_cfg;
-
unsigned int source_pad;
unsigned int sink_pad;
};
/**
+ * struct rvin_group_route - describes a route from a channel of a
+ * CSI-2 receiver to a VIN
+ *
+ * @csi: CSI-2 receiver ID.
+ * @channel: Output channel of the CSI-2 receiver.
+ * @vin: VIN ID.
+ * @mask: Bitmask of the different CHSEL register values that
+ * allow for a route from @csi + @chan to @vin.
+ *
+ * .. note::
+ * Each R-Car CSI-2 receiver has four output channels facing the VIN
+ * devices, each channel can carry one CSI-2 Virtual Channel (VC).
+ * There is no correlation between channel number and CSI-2 VC. It's
+ * up to the CSI-2 receiver driver to configure which VC is output
+ * on which channel, the VIN devices only care about output channels.
+ *
+ * There are in some cases multiple CHSEL register settings which would
+ * allow for the same route from @csi + @channel to @vin. For example
+ * on R-Car H3 both the CHSEL values 0 and 3 allow for a route from
+ * CSI40/VC0 to VIN0. All possible CHSEL values for a route need to be
+ * recorded as a bitmask in @mask, in this example bit 0 and 3 should
+ * be set.
+ */
+struct rvin_group_route {
+ enum rvin_csi_id csi;
+ unsigned int channel;
+ unsigned int vin;
+ unsigned int mask;
+};
+
+/**
+ * struct rvin_info - Information about the particular VIN implementation
+ * @model: VIN model
+ * @use_mc: use media controller instead of controlling subdevice
+ * @max_width: max input width the VIN supports
+ * @max_height: max input height the VIN supports
+ * @routes: list of possible routes from the CSI-2 recivers to
+ * all VINs. The list mush be NULL terminated.
+ */
+struct rvin_info {
+ enum model_id model;
+ bool use_mc;
+
+ unsigned int max_width;
+ unsigned int max_height;
+ const struct rvin_group_route *routes;
+};
+
+/**
* struct rvin_dev - Renesas VIN device structure
* @dev: (OF) device
* @base: device I/O register space remapped to virtual memory
- * @chip: type of VIN chip
+ * @info: info about VIN instance
*
* @vdev: V4L2 video device associated with VIN
* @v4l2_dev: V4L2 device
@@ -98,6 +148,10 @@ struct rvin_graph_entity {
* @notifier: V4L2 asynchronous subdevs notifier
* @digital: entity in the DT for local digital subdevice
*
+ * @group: Gen3 CSI group
+ * @id: Gen3 group id for this VIN
+ * @pad: media pad for the video device entity
+ *
* @lock: protects @queue
* @queue: vb2 buffers queue
* @scratch: cpu address for scratch buffer
@@ -110,16 +164,19 @@ struct rvin_graph_entity {
* @sequence: V4L2 buffers sequence number
* @state: keeps track of operation state
*
- * @source: active format from the video source
+ * @mbus_cfg: media bus configuration from DT
+ * @mbus_code: media bus format code
* @format: active V4L2 pixel format
*
* @crop: active cropping
* @compose: active composing
+ * @source: active size of the video source
+ * @std: active video standard of the video source
*/
struct rvin_dev {
struct device *dev;
void __iomem *base;
- enum chip_id chip;
+ const struct rvin_info *info;
struct video_device vdev;
struct v4l2_device v4l2_dev;
@@ -127,6 +184,10 @@ struct rvin_dev {
struct v4l2_async_notifier notifier;
struct rvin_graph_entity *digital;
+ struct rvin_group *group;
+ unsigned int id;
+ struct media_pad pad;
+
struct mutex lock;
struct vb2_queue queue;
void *scratch;
@@ -138,11 +199,14 @@ struct rvin_dev {
unsigned int sequence;
enum rvin_dma_state state;
- struct rvin_source_fmt source;
+ struct v4l2_mbus_config mbus_cfg;
+ u32 mbus_code;
struct v4l2_pix_format format;
struct v4l2_rect crop;
struct v4l2_rect compose;
+ struct v4l2_rect source;
+ v4l2_std_id std;
};
#define vin_to_source(vin) ((vin)->digital->subdev)
@@ -153,17 +217,47 @@ struct rvin_dev {
#define vin_warn(d, fmt, arg...) dev_warn(d->dev, fmt, ##arg)
#define vin_err(d, fmt, arg...) dev_err(d->dev, fmt, ##arg)
-int rvin_dma_probe(struct rvin_dev *vin, int irq);
-void rvin_dma_remove(struct rvin_dev *vin);
+/**
+ * struct rvin_group - VIN CSI2 group information
+ * @refcount: number of VIN instances using the group
+ *
+ * @mdev: media device which represents the group
+ *
+ * @lock: protects the count, notifier, vin and csi members
+ * @count: number of enabled VIN instances found in DT
+ * @notifier: pointer to the notifier of a VIN which handles the
+ * groups async sub-devices.
+ * @vin: VIN instances which are part of the group
+ * @csi: array of pairs of fwnode and subdev pointers
+ * to all CSI-2 subdevices.
+ */
+struct rvin_group {
+ struct kref refcount;
+
+ struct media_device mdev;
-int rvin_v4l2_probe(struct rvin_dev *vin);
-void rvin_v4l2_remove(struct rvin_dev *vin);
+ struct mutex lock;
+ unsigned int count;
+ struct v4l2_async_notifier *notifier;
+ struct rvin_dev *vin[RCAR_VIN_NUM];
+
+ struct {
+ struct fwnode_handle *fwnode;
+ struct v4l2_subdev *subdev;
+ } csi[RVIN_CSI_MAX];
+};
+
+int rvin_dma_register(struct rvin_dev *vin, int irq);
+void rvin_dma_unregister(struct rvin_dev *vin);
+
+int rvin_v4l2_register(struct rvin_dev *vin);
+void rvin_v4l2_unregister(struct rvin_dev *vin);
const struct rvin_video_format *rvin_format_from_pixel(u32 pixelformat);
/* Cropping, composing and scaling */
-void rvin_scale_try(struct rvin_dev *vin, struct v4l2_pix_format *pix,
- u32 width, u32 height);
void rvin_crop_scale_comp(struct rvin_dev *vin);
+int rvin_set_channel_routing(struct rvin_dev *vin, u8 chsel);
+
#endif