path: root/drivers/media/video/usbvideo/konicawc.c

/*
 * konicawc.c - konica webcam driver
 *
 * Author: Simon Evans <spse@secret.org.uk>
 *
 * Copyright (C) 2002 Simon Evans
 *
 * Licence: GPL
 *
 * Driver for USB webcams based on Konica chipset. This
 * chipset is used in Intel YC76 camera.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/usb_input.h>

#include "usbvideo.h"

#define MAX_BRIGHTNESS	108
#define MAX_CONTRAST	108
#define MAX_SATURATION	108
#define MAX_SHARPNESS	108
#define MAX_WHITEBAL	372
#define MAX_SPEED	6


#define MAX_CAMERAS	1

#define DRIVER_VERSION	"v1.4"
#define DRIVER_DESC	"Konica Webcam driver"

enum ctrl_req {
	SetWhitebal	= 0x01,
	SetBrightness	= 0x02,
	SetSharpness	= 0x03,
	SetContrast	= 0x04,
	SetSaturation	= 0x05,
};


enum frame_sizes {
	SIZE_160X120	= 0,
	SIZE_160X136	= 1,
	SIZE_176X144	= 2,
	SIZE_320X240	= 3,

};

#define MAX_FRAME_SIZE	SIZE_320X240

static struct usbvideo *cams;

#ifdef CONFIG_USB_DEBUG
static int debug;
#define DEBUG(n, format, arg...) \
	if (n <= debug) {	 \
		printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __FUNCTION__ , ## arg); \
	}
#else
#define DEBUG(n, arg...)
static const int debug = 0;
#endif


/* Some default values for initial camera settings,
   can be set by modprobe */

static int size;
static int speed = 6;		/* Speed (fps) 0 (slowest) to 6 (fastest) */
static int brightness =	MAX_BRIGHTNESS/2;
static int contrast =	MAX_CONTRAST/2;
static int saturation =	MAX_SATURATION/2;
static int sharpness =	MAX_SHARPNESS/2;
static int whitebal =	3*(MAX_WHITEBAL/4);

static const int spd_to_iface[] = { 1, 0, 3, 2, 4, 5, 6 };

/* These FPS speeds are from the windows config box. They are
 * indexed on size (0-2) and speed (0-6). Divide by 3 to get the
 * real fps.
 */

static const int spd_to_fps[][7] = { { 24, 40, 48, 60, 72, 80, 100 },
			       { 24, 40, 48, 60, 72, 80, 100 },
			       { 18, 30, 36, 45, 54, 60, 75  },
			       { 6,  10, 12, 15, 18, 21, 25  } };

struct cam_size {
	u16	width;
	u16	height;
	u8	cmd;
};

static const struct cam_size camera_sizes[] = { { 160, 120, 0x7 },
					  { 160, 136, 0xa },
					  { 176, 144, 0x4 },
					  { 320, 240, 0x5 } };

struct konicawc {
	u8 brightness;		/* camera uses 0 - 9, x11 for real value */
	u8 contrast;		/* as above */
	u8 saturation;		/* as above */
	u8 sharpness;		/* as above */
	u8 white_bal;		/* 0 - 33, x11 for real value */
	u8 speed;		/* Stored as 0 - 6, used as index in spd_to_* (above) */
	u8 size;		/* Frame Size */
	int height;
	int width;
	struct urb *sts_urb[USBVIDEO_NUMSBUF];
	u8 sts_buf[USBVIDEO_NUMSBUF][FRAMES_PER_DESC];
	struct urb *last_data_urb;
	int lastframe;
	int cur_frame_size;	/* number of bytes in current frame size */
	int maxline;		/* number of lines per frame */
	int yplanesz;		/* Number of bytes in the Y plane */
	unsigned int buttonsts:1;
#ifdef CONFIG_INPUT
	struct input_dev *input;
	char input_physname[64];
#endif
};


#define konicawc_set_misc(uvd, req, value, index)		konicawc_ctrl_msg(uvd, USB_DIR_OUT, req, value, index, NULL, 0)
#define konicawc_get_misc(uvd, req, value, index, buf, sz)	konicawc_ctrl_msg(uvd, USB_DIR_IN, req, value, index, buf, sz)
#define konicawc_set_value(uvd, value, index)			konicawc_ctrl_msg(uvd, USB_DIR_OUT, 2, value, index, NULL, 0)


static int konicawc_ctrl_msg(struct uvd *uvd, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
{
	int retval = usb_control_msg(uvd->dev,
		dir ? usb_rcvctrlpipe(uvd->dev, 0) : usb_sndctrlpipe(uvd->dev, 0),
		    request, 0x40 | dir, value, index, buf, len, 1000);
	return retval < 0 ? retval : 0;
}


static inline void konicawc_camera_on(struct uvd *uvd)
{
	DEBUG(0, "camera on");
	konicawc_set_misc(uvd, 0x2, 1, 0x0b);
}


static inline void konicawc_camera_off(struct uvd *uvd)
{
	DEBUG(0, "camera off");
	konicawc_set_misc(uvd, 0x2, 0, 0x0b);
}


static void konicawc_set_camera_size(struct uvd *uvd)
{
	struct konicawc *