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/*
* V4L2 Media Controller Driver for Freescale i.MX5/6 SOC
*
* Copyright (c) 2016 Mentor Graphics Inc.
*
* 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.
*/
#ifndef _IMX_MEDIA_H
#define _IMX_MEDIA_H
#include <linux/platform_device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>
#include <media/videobuf2-dma-contig.h>
#include <video/imx-ipu-v3.h>
/*
* Pad definitions for the subdevs with multiple source or
* sink pads
*/
/* ipu_csi */
enum {
CSI_SINK_PAD = 0,
CSI_SRC_PAD_DIRECT,
CSI_SRC_PAD_IDMAC,
CSI_NUM_PADS,
};
/* ipu_vdic */
enum {
VDIC_SINK_PAD_DIRECT = 0,
VDIC_SINK_PAD_IDMAC,
VDIC_SRC_PAD_DIRECT,
VDIC_NUM_PADS,
};
/* ipu_ic_prp */
enum {
PRP_SINK_PAD = 0,
PRP_SRC_PAD_PRPENC,
PRP_SRC_PAD_PRPVF,
PRP_NUM_PADS,
};
/* ipu_ic_prpencvf */
enum {
PRPENCVF_SINK_PAD = 0,
PRPENCVF_SRC_PAD,
PRPENCVF_NUM_PADS,
};
/* How long to wait for EOF interrupts in the buffer-capture subdevs */
#define IMX_MEDIA_EOF_TIMEOUT 1000
struct imx_media_pixfmt {
u32 fourcc;
u32 codes[4];
int bpp; /* total bpp */
enum ipu_color_space cs;
bool planar; /* is a planar format */
bool bayer; /* is a raw bayer format */
bool ipufmt; /* is one of the IPU internal formats */
};
struct imx_media_buffer {
struct vb2_v4l2_buffer vbuf; /* v4l buffer must be first */
struct list_head list;
};
struct imx_media_video_dev {
struct video_device *vfd;
/* the user format */
struct v4l2_format fmt;
const struct imx_media_pixfmt *cc;
/* links this vdev to master list */
struct list_head list;
};
static inline struct imx_media_buffer *to_imx_media_vb(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
return container_of(vbuf, struct imx_media_buffer, vbuf);
}
/*
* to support control inheritance to video devices, this
* retrieves a pad's list_head of video devices that can
* be reached from the pad. Note that only the lists in
* source pads get populated, sink pads have empty lists.
*/
static inline struct list_head *
to_pad_vdev_list(struct v4l2_subdev *sd, int pad_index)
{
struct list_head *vdev_list = sd->host_priv;
return vdev_list ? &vdev_list[pad_index] : NULL;
}
/* an entry in a pad's video device list */
struct imx_media_pad_vdev {
struct imx_media_video_dev *vdev;
struct list_head list;
};
struct imx_media_internal_sd_platformdata {
char sd_name[V4L2_SUBDEV_NAME_SIZE];
u32 grp_id;
int ipu_id;
};
struct imx_media_async_subdev {
struct v4l2_async_subdev asd;
/* the platform device of IPU-internal subdevs */
struct platform_device *pdev;
struct list_head list;
};
static inline struct imx_media_async_subdev *
to_imx_media_asd(struct v4l2_async_subdev *asd)
{
return container_of(asd, struct imx_media_async_subdev, asd);
}
struct imx_media_dev {
struct media_device md;
struct v4l2_device v4l2_dev;
/* the pipeline object */
struct media_pipeline pipe;
struct mutex mutex; /* protect elements below */
/* master video device list */
struct list_head vdev_list;
/* IPUs this media driver control, valid after subdevs bound */
struct ipu_soc *ipu[2];
/* for async subdev registration */
struct list_head asd_list;
struct v4l2_async_notifier subdev_notifier;
};
enum codespace_sel {
CS_SEL_YUV = 0,
CS_SEL_RGB,
CS_SEL_ANY,
};
/* imx-media-utils.c */
const struct imx_media_pixfmt *
imx_media_find_format(u32 fourcc, enum codespace_sel cs_sel, bool allow_bayer);
int imx_media_enum_format(u32 *fourcc, u32 index, enum codespace_sel cs_sel);
const struct imx_media_pixfmt *
imx_media_find_mbus_format(u32 code, enum codespace_sel cs_sel,
bool allow_bayer);
int imx_media_enum_mbus_format(u32 *code, u32 index, enum codespace_sel cs_sel,
bool allow_bayer);
const struct imx_media_pixfmt *
imx_media_find_ipu_format(u32 code, enum codespace_sel cs_sel);
int imx_media_enum_ipu_format(u32 *code, u32 index, enum codespace_sel cs_sel);
int imx_media_init_mbus_fmt(struct v4l2_mbus_framefmt *mbus,
u32 width, u32 height, u32 code, u32 field,
const struct imx_media_pixfmt **cc);
void imx_media_fill_default_mbus_fields(struct v4l2_mbus_framefmt *tryfmt,
struct v4l2_mbus_framefmt *fmt,
bool ic_route);
int imx_media_mbus_fmt_to_pix_fmt(struct v4l2_pix_format *pix,
struct v4l2_mbus_framefmt *mbus,
const struct imx_media_pixfmt *cc);
int imx_media_mbus_fmt_to_ipu_image(struct ipu_image *image,
struct v4l2_mbus_framefmt *mbus);
int imx_media_ipu_image_to_mbus_fmt(struct v4l2_mbus_framefmt *mbus,
struct ipu_image *image);
void imx_media_grp_id_to_sd_name(char *sd_name, int sz,
u32 grp_id, int ipu_id);
struct v4l2_subdev *
imx_media_find_subdev_by_fwnode(struct imx_media_dev *imxmd,
struct fwnode_handle *fwnode);
struct v4l2_subdev *
imx_media_find_subdev_by_devname(struct imx_media_dev *imxmd,
const char *devname);
int imx_media_add_video_device(struct imx_media_dev *imxmd,
struct imx_media_video_dev *vdev);
int imx_media_find_mipi_csi2_channel(struct imx_media_dev *imxmd,
struct media_entity *start_entity);
struct media_pad *
imx_media_find_upstream_pad(struct imx_media_dev *imxmd,
struct media_entity *start_entity,
u32 grp_id);
struct v4l2_subdev *
imx_media_find_upstream_subdev(struct imx_media_dev *imxmd,
struct media_entity *start_entity,
u32 grp_id);
struct imx_media_dma_buf {
void *virt;
dma_addr_t phys;
unsigned long len;
};
void imx_media_free_dma_buf(struct imx_media_dev *imxmd,
struct imx_media_dma_buf *buf);
int imx_media_alloc_dma_buf(struct imx_media_dev *imxmd,
struct imx_media_dma_buf *buf,
int size);
int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd,
struct media_entity *entity,
bool on);
/* imx-media-dev.c */
int imx_media_add_async_subdev(struct imx_media_dev *imxmd,
struct fwnode_handle *fwnode,
struct platform_device *pdev);
/* imx-media-fim.c */
struct imx_media_fim;
void imx_media_fim_eof_monitor(struct imx_media_fim *fim, ktime_t timestamp);
int imx_media_fim_set_stream(struct imx_media_fim *fim,
const struct v4l2_fract *frame_interval,
bool on);
int imx_media_fim_add_controls(struct imx_media_fim *fim);
struct imx_media_fim *imx_media_fim_init(struct v4l2_subdev *sd);
void imx_media_fim_free(struct imx_media_fim *fim);
/* imx-media-internal-sd.c */
int imx_media_add_internal_subdevs(struct imx_media_dev *imxmd);
int imx_media_create_internal_links(struct imx_media_dev *imxmd,
struct v4l2_subdev *sd);
void imx_media_remove_internal_subdevs(struct imx_media_dev *imxmd);
/* imx-media-of.c */
int imx_media_add_of_subdevs(struct imx_media_dev *dev,
struct device_node *np);
int imx_media_create_of_links(struct imx_media_dev *imxmd,
struct v4l2_subdev *sd);
int imx_media_create_csi_of_links(struct imx_media_dev *imxmd,
struct v4l2_subdev *csi);
/* imx-media-capture.c */
struct imx_media_video_dev *
imx_media_capture_device_init(struct v4l2_subdev *src_sd, int pad);
void imx_media_capture_device_remove(struct imx_media_video_dev *vdev);
int imx_media_capture_device_register(struct imx_media_video_dev *vdev);
void imx_media_capture_device_unregister(struct imx_media_video_dev *vdev);
struct imx_media_buffer *
imx_media_capture_device_next_buf(struct imx_media_video_dev *vdev);
void imx_media_capture_device_set_format(struct imx_media_video_dev *vdev,
struct v4l2_pix_format *pix);
void imx_media_capture_device_error(struct imx_media_video_dev *vdev);
/* subdev group ids */
#define IMX_MEDIA_GRP_ID_CSI2 BIT(8)
#define IMX_MEDIA_GRP_ID_CSI_BIT 9
#define IMX_MEDIA_GRP_ID_CSI (0x3 << IMX_MEDIA_GRP_ID_CSI_BIT)
#define IMX_MEDIA_GRP_ID_CSI0 BIT(IMX_MEDIA_GRP_ID_CSI_BIT)
#define IMX_MEDIA_GRP_ID_CSI1 (2 << IMX_MEDIA_GRP_ID_CSI_BIT)
#define IMX_MEDIA_GRP_ID_VDIC BIT(11)
#define IMX_MEDIA_GRP_ID_IC_PRP BIT(12)
#define IMX_MEDIA_GRP_ID_IC_PRPENC BIT(13)
#define IMX_MEDIA_GRP_ID_IC_PRPVF BIT(14)
#endif
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