cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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stk-webcam.h (2995B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * stk-webcam.h : Driver for Syntek 1125 USB webcam controller
      4 *
      5 * Copyright (C) 2006 Nicolas VIVIEN
      6 * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
      7 */
      8
      9#ifndef STKWEBCAM_H
     10#define STKWEBCAM_H
     11
     12#include <linux/usb.h>
     13#include <media/v4l2-device.h>
     14#include <media/v4l2-ctrls.h>
     15#include <media/v4l2-common.h>
     16
     17#define DRIVER_VERSION		"v0.0.1"
     18#define DRIVER_VERSION_NUM	0x000001
     19
     20#define MAX_ISO_BUFS		3
     21#define ISO_FRAMES_PER_DESC	16
     22#define ISO_MAX_FRAME_SIZE	3 * 1024
     23#define ISO_BUFFER_SIZE		(ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
     24
     25struct stk_iso_buf {
     26	void *data;
     27	int length;
     28	int read;
     29	struct urb *urb;
     30};
     31
     32/* Streaming IO buffers */
     33struct stk_sio_buffer {
     34	struct v4l2_buffer v4lbuf;
     35	char *buffer;
     36	int mapcount;
     37	struct stk_camera *dev;
     38	struct list_head list;
     39};
     40
     41enum stk_mode {MODE_VGA, MODE_SXGA, MODE_CIF, MODE_QVGA, MODE_QCIF};
     42
     43struct stk_video {
     44	enum stk_mode mode;
     45	__u32 palette;
     46	int hflip;
     47	int vflip;
     48};
     49
     50enum stk_status {
     51	S_PRESENT = 1,
     52	S_INITIALISED = 2,
     53	S_MEMALLOCD = 4,
     54	S_STREAMING = 8,
     55};
     56#define is_present(dev)		((dev)->status & S_PRESENT)
     57#define is_initialised(dev)	((dev)->status & S_INITIALISED)
     58#define is_streaming(dev)	((dev)->status & S_STREAMING)
     59#define is_memallocd(dev)	((dev)->status & S_MEMALLOCD)
     60#define set_present(dev)	((dev)->status = S_PRESENT)
     61#define unset_present(dev)	((dev)->status &= \
     62					~(S_PRESENT|S_INITIALISED|S_STREAMING))
     63#define set_initialised(dev)	((dev)->status |= S_INITIALISED)
     64#define unset_initialised(dev)	((dev)->status &= ~S_INITIALISED)
     65#define set_memallocd(dev)	((dev)->status |= S_MEMALLOCD)
     66#define unset_memallocd(dev)	((dev)->status &= ~S_MEMALLOCD)
     67#define set_streaming(dev)	((dev)->status |= S_STREAMING)
     68#define unset_streaming(dev)	((dev)->status &= ~S_STREAMING)
     69
     70struct regval {
     71	unsigned reg;
     72	unsigned val;
     73};
     74
     75struct stk_camera {
     76	struct v4l2_device v4l2_dev;
     77	struct v4l2_ctrl_handler hdl;
     78	struct video_device vdev;
     79	struct usb_device *udev;
     80	struct usb_interface *interface;
     81	int webcam_model;
     82	struct file *owner;
     83	struct mutex lock;
     84	int first_init;
     85
     86	u8 isoc_ep;
     87
     88	/* Not sure if this is right */
     89	atomic_t urbs_used;
     90
     91	struct stk_video vsettings;
     92
     93	enum stk_status status;
     94
     95	spinlock_t spinlock;
     96	wait_queue_head_t wait_frame;
     97
     98	struct stk_iso_buf *isobufs;
     99
    100	int frame_size;
    101	/* Streaming buffers */
    102	int reading;
    103	unsigned int n_sbufs;
    104	struct stk_sio_buffer *sio_bufs;
    105	struct list_head sio_avail;
    106	struct list_head sio_full;
    107	unsigned sequence;
    108
    109	u8 read_reg_scratch;
    110};
    111
    112#define vdev_to_camera(d) container_of(d, struct stk_camera, vdev)
    113
    114int stk_camera_write_reg(struct stk_camera *, u16, u8);
    115int stk_camera_read_reg(struct stk_camera *, u16, u8 *);
    116
    117int stk_sensor_init(struct stk_camera *);
    118int stk_sensor_configure(struct stk_camera *);
    119int stk_sensor_sleep(struct stk_camera *dev);
    120int stk_sensor_wakeup(struct stk_camera *dev);
    121int stk_sensor_set_brightness(struct stk_camera *dev, int br);
    122
    123#endif