+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * camera image capture (abstract) bus driver header
- *
- * Copyright (C) 2006, Sascha Hauer, Pengutronix
- * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
- */
-
-#ifndef SOC_CAMERA_H
-#define SOC_CAMERA_H
-
-#include <linux/bitops.h>
-#include <linux/device.h>
-#include <linux/mutex.h>
-#include <linux/pm.h>
-#include <linux/videodev2.h>
-#include <media/videobuf2-v4l2.h>
-#include <media/v4l2-async.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-device.h>
-
-struct file;
-struct soc_camera_desc;
-struct soc_camera_async_client;
-
-struct soc_camera_device {
- struct list_head list; /* list of all registered devices */
- struct soc_camera_desc *sdesc;
- struct device *pdev; /* Platform device */
- struct device *parent; /* Camera host device */
- struct device *control; /* E.g., the i2c client */
- s32 user_width;
- s32 user_height;
- u32 bytesperline; /* for padding, zero if unused */
- u32 sizeimage;
- enum v4l2_colorspace colorspace;
- unsigned char iface; /* Host number */
- unsigned char devnum; /* Device number per host */
- struct soc_camera_sense *sense; /* See comment in struct definition */
- struct video_device *vdev;
- struct v4l2_ctrl_handler ctrl_handler;
- const struct soc_camera_format_xlate *current_fmt;
- struct soc_camera_format_xlate *user_formats;
- int num_user_formats;
- enum v4l2_field field; /* Preserve field over close() */
- void *host_priv; /* Per-device host private data */
- /* soc_camera.c private count. Only accessed with .host_lock held */
- int use_count;
- struct file *streamer; /* stream owner */
- struct v4l2_clk *clk;
- /* Asynchronous subdevice management */
- struct soc_camera_async_client *sasc;
- /* video buffer queue */
- struct vb2_queue vb2_vidq;
-};
-
-/* Host supports programmable stride */
-#define SOCAM_HOST_CAP_STRIDE (1 << 0)
-
-enum soc_camera_subdev_role {
- SOCAM_SUBDEV_DATA_SOURCE = 1,
- SOCAM_SUBDEV_DATA_SINK,
- SOCAM_SUBDEV_DATA_PROCESSOR,
-};
-
-struct soc_camera_async_subdev {
- struct v4l2_async_subdev asd;
- enum soc_camera_subdev_role role;
-};
-
-struct soc_camera_host {
- struct v4l2_device v4l2_dev;
- struct list_head list;
- struct mutex host_lock; /* Main synchronisation lock */
- struct mutex clk_lock; /* Protect pipeline modifications */
- unsigned char nr; /* Host number */
- u32 capabilities;
- struct soc_camera_device *icd; /* Currently attached client */
- void *priv;
- const char *drv_name;
- struct soc_camera_host_ops *ops;
- struct v4l2_async_subdev **asd; /* Flat array, arranged in groups */
- unsigned int *asd_sizes; /* 0-terminated array of asd group sizes */
-};
-
-struct soc_camera_host_ops {
- struct module *owner;
- int (*add)(struct soc_camera_device *);
- void (*remove)(struct soc_camera_device *);
- int (*clock_start)(struct soc_camera_host *);
- void (*clock_stop)(struct soc_camera_host *);
- /*
- * .get_formats() is called for each client device format, but
- * .put_formats() is only called once. Further, if any of the calls to
- * .get_formats() fail, .put_formats() will not be called at all, the
- * failing .get_formats() must then clean up internally.
- */
- int (*get_formats)(struct soc_camera_device *, unsigned int,
- struct soc_camera_format_xlate *);
- void (*put_formats)(struct soc_camera_device *);
- int (*get_selection)(struct soc_camera_device *, struct v4l2_selection *);
- int (*set_selection)(struct soc_camera_device *, struct v4l2_selection *);
- /*
- * The difference to .set_selection() is, that .set_liveselection is not allowed
- * to change the output sizes
- */
- int (*set_liveselection)(struct soc_camera_device *, struct v4l2_selection *);
- int (*set_fmt)(struct soc_camera_device *, struct v4l2_format *);
- int (*try_fmt)(struct soc_camera_device *, struct v4l2_format *);
- int (*init_videobuf2)(struct vb2_queue *,
- struct soc_camera_device *);
- int (*querycap)(struct soc_camera_host *, struct v4l2_capability *);
- int (*set_bus_param)(struct soc_camera_device *);
- int (*get_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
- int (*set_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
- int (*enum_framesizes)(struct soc_camera_device *, struct v4l2_frmsizeenum *);
- __poll_t (*poll)(struct file *, poll_table *);
-};
-
-#define SOCAM_SENSOR_INVERT_PCLK (1 << 0)
-#define SOCAM_SENSOR_INVERT_MCLK (1 << 1)
-#define SOCAM_SENSOR_INVERT_HSYNC (1 << 2)
-#define SOCAM_SENSOR_INVERT_VSYNC (1 << 3)
-#define SOCAM_SENSOR_INVERT_DATA (1 << 4)
-
-struct i2c_board_info;
-struct regulator_bulk_data;
-
-struct soc_camera_subdev_desc {
- /* Per camera SOCAM_SENSOR_* bus flags */
- unsigned long flags;
-
- /* sensor driver private platform data */
- void *drv_priv;
-
- /*
- * Set unbalanced_power to true to deal with legacy drivers, failing to
- * balance their calls to subdevice's .s_power() method. clock_state is
- * then used internally by helper functions, it shouldn't be touched by
- * drivers or the platform code.
- */
- bool unbalanced_power;
- unsigned long clock_state;
-
- /* Optional callbacks to power on or off and reset the sensor */
- int (*power)(struct device *, int);
- int (*reset)(struct device *);
-
- /*
- * some platforms may support different data widths than the sensors
- * native ones due to different data line routing. Let the board code
- * overwrite the width flags.
- */
- int (*set_bus_param)(struct soc_camera_subdev_desc *, unsigned long flags);
- unsigned long (*query_bus_param)(struct soc_camera_subdev_desc *);
- void (*free_bus)(struct soc_camera_subdev_desc *);
-
- /* Optional regulators that have to be managed on power on/off events */
- struct v4l2_subdev_platform_data sd_pdata;
-};
-
-struct soc_camera_host_desc {
- /* Camera bus id, used to match a camera and a bus */
- int bus_id;
- int i2c_adapter_id;
- struct i2c_board_info *board_info;
- const char *module_name;
-
- /*
- * For non-I2C devices platform has to provide methods to add a device
- * to the system and to remove it
- */
- int (*add_device)(struct soc_camera_device *);
- void (*del_device)(struct soc_camera_device *);
-};
-
-/*
- * Platform data for "soc-camera-pdrv"
- * This MUST be kept binary-identical to struct soc_camera_link below, until
- * it is completely replaced by this one, after which we can split it into its
- * two components.
- */
-struct soc_camera_desc {
- struct soc_camera_subdev_desc subdev_desc;
- struct soc_camera_host_desc host_desc;
-};
-
-/* Prepare to replace this struct: don't change its layout any more! */
-struct soc_camera_link {
- /*
- * Subdevice part - keep at top and compatible to
- * struct soc_camera_subdev_desc
- */
-
- /* Per camera SOCAM_SENSOR_* bus flags */
- unsigned long flags;
-
- void *priv;
-
- /* Set by platforms to handle misbehaving drivers */
- bool unbalanced_power;
- /* Used by soc-camera helper functions */
- unsigned long clock_state;
-
- /* Optional callbacks to power on or off and reset the sensor */
- int (*power)(struct device *, int);
- int (*reset)(struct device *);
- /*
- * some platforms may support different data widths than the sensors
- * native ones due to different data line routing. Let the board code
- * overwrite the width flags.
- */
- int (*set_bus_param)(struct soc_camera_link *, unsigned long flags);
- unsigned long (*query_bus_param)(struct soc_camera_link *);
- void (*free_bus)(struct soc_camera_link *);
-
- /* Optional regulators that have to be managed on power on/off events */
- struct regulator_bulk_data *regulators;
- int num_regulators;
-
- void *host_priv;
-
- /*
- * Host part - keep at bottom and compatible to
- * struct soc_camera_host_desc
- */
-
- /* Camera bus id, used to match a camera and a bus */
- int bus_id;
- int i2c_adapter_id;
- struct i2c_board_info *board_info;
- const char *module_name;
-
- /*
- * For non-I2C devices platform has to provide methods to add a device
- * to the system and to remove it
- */
- int (*add_device)(struct soc_camera_device *);
- void (*del_device)(struct soc_camera_device *);
-};
-
-static inline struct soc_camera_host *to_soc_camera_host(
- const struct device *dev)
-{
- struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
-
- return container_of(v4l2_dev, struct soc_camera_host, v4l2_dev);
-}
-
-static inline struct soc_camera_desc *to_soc_camera_desc(
- const struct soc_camera_device *icd)
-{
- return icd->sdesc;
-}
-
-static inline struct device *to_soc_camera_control(
- const struct soc_camera_device *icd)
-{
- return icd->control;
-}
-
-static inline struct v4l2_subdev *soc_camera_to_subdev(
- const struct soc_camera_device *icd)
-{
- struct device *control = to_soc_camera_control(icd);
- return dev_get_drvdata(control);
-}
-
-int soc_camera_host_register(struct soc_camera_host *ici);
-void soc_camera_host_unregister(struct soc_camera_host *ici);
-
-const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
- struct soc_camera_device *icd, unsigned int fourcc);
-
-/**
- * struct soc_camera_format_xlate - match between host and sensor formats
- * @code: code of a sensor provided format
- * @host_fmt: host format after host translation from code
- *
- * Host and sensor translation structure. Used in table of host and sensor
- * formats matchings in soc_camera_device. A host can override the generic list
- * generation by implementing get_formats(), and use it for format checks and
- * format setup.
- */
-struct soc_camera_format_xlate {
- u32 code;
- const struct soc_mbus_pixelfmt *host_fmt;
-};
-
-#define SOCAM_SENSE_PCLK_CHANGED (1 << 0)
-
-/**
- * This struct can be attached to struct soc_camera_device by the host driver
- * to request sense from the camera, for example, when calling .set_fmt(). The
- * host then can check which flags are set and verify respective values if any.
- * For example, if SOCAM_SENSE_PCLK_CHANGED is set, it means, pixclock has
- * changed during this operation. After completion the host should detach sense.
- *
- * @flags ored SOCAM_SENSE_* flags
- * @master_clock if the host wants to be informed about pixel-clock
- * change, it better set master_clock.
- * @pixel_clock_max maximum pixel clock frequency supported by the host,
- * camera is not allowed to exceed this.
- * @pixel_clock if the camera driver changed pixel clock during this
- * operation, it sets SOCAM_SENSE_PCLK_CHANGED, uses
- * master_clock to calculate the new pixel-clock and
- * sets this field.
- */
-struct soc_camera_sense {
- unsigned long flags;
- unsigned long master_clock;
- unsigned long pixel_clock_max;
- unsigned long pixel_clock;
-};
-
-#define SOCAM_DATAWIDTH(x) BIT((x) - 1)
-#define SOCAM_DATAWIDTH_4 SOCAM_DATAWIDTH(4)
-#define SOCAM_DATAWIDTH_8 SOCAM_DATAWIDTH(8)
-#define SOCAM_DATAWIDTH_9 SOCAM_DATAWIDTH(9)
-#define SOCAM_DATAWIDTH_10 SOCAM_DATAWIDTH(10)
-#define SOCAM_DATAWIDTH_12 SOCAM_DATAWIDTH(12)
-#define SOCAM_DATAWIDTH_15 SOCAM_DATAWIDTH(15)
-#define SOCAM_DATAWIDTH_16 SOCAM_DATAWIDTH(16)
-#define SOCAM_DATAWIDTH_18 SOCAM_DATAWIDTH(18)
-#define SOCAM_DATAWIDTH_24 SOCAM_DATAWIDTH(24)
-
-#define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_4 | SOCAM_DATAWIDTH_8 | \
- SOCAM_DATAWIDTH_9 | SOCAM_DATAWIDTH_10 | \
- SOCAM_DATAWIDTH_12 | SOCAM_DATAWIDTH_15 | \
- SOCAM_DATAWIDTH_16 | SOCAM_DATAWIDTH_18 | \
- SOCAM_DATAWIDTH_24)
-
-static inline void soc_camera_limit_side(int *start, int *length,
- unsigned int start_min,
- unsigned int length_min, unsigned int length_max)
-{
- if (*length < length_min)
- *length = length_min;
- else if (*length > length_max)
- *length = length_max;
-
- if (*start < start_min)
- *start = start_min;
- else if (*start > start_min + length_max - *length)
- *start = start_min + length_max - *length;
-}
-
-unsigned long soc_camera_apply_board_flags(struct soc_camera_subdev_desc *ssdd,
- const struct v4l2_mbus_config *cfg);
-
-int soc_camera_power_init(struct device *dev, struct soc_camera_subdev_desc *ssdd);
-int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd,
- struct v4l2_clk *clk);
-int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd,
- struct v4l2_clk *clk);
-
-static inline int soc_camera_set_power(struct device *dev,
- struct soc_camera_subdev_desc *ssdd, struct v4l2_clk *clk, bool on)
-{
- return on ? soc_camera_power_on(dev, ssdd, clk)
- : soc_camera_power_off(dev, ssdd, clk);
-}
-
-/* This is only temporary here - until v4l2-subdev begins to link to video_device */
-#include <linux/i2c.h>
-static inline struct video_device *soc_camera_i2c_to_vdev(const struct i2c_client *client)
-{
- struct v4l2_subdev *sd = i2c_get_clientdata(client);
- struct soc_camera_device *icd = v4l2_get_subdev_hostdata(sd);
- return icd ? icd->vdev : NULL;
-}
-
-static inline struct soc_camera_subdev_desc *soc_camera_i2c_to_desc(const struct i2c_client *client)
-{
- return client->dev.platform_data;
-}
-
-static inline struct v4l2_subdev *soc_camera_vdev_to_subdev(struct video_device *vdev)
-{
- struct soc_camera_device *icd = video_get_drvdata(vdev);
- return soc_camera_to_subdev(icd);
-}
-
-static inline struct soc_camera_device *soc_camera_from_vb2q(const struct vb2_queue *vq)
-{
- return container_of(vq, struct soc_camera_device, vb2_vidq);
-}
-
-static inline u32 soc_camera_grp_id(const struct soc_camera_device *icd)
-{
- return (icd->iface << 8) | (icd->devnum + 1);
-}
-
-void soc_camera_lock(struct vb2_queue *vq);
-void soc_camera_unlock(struct vb2_queue *vq);
-
-#endif
projects / platform / kernel / linux-starfive.git / commitdiff