path: root/drivers/media/video/pwc/pwc-v4l.c

/* Linux driver for Philips webcam
   USB and Video4Linux interface part.
   (C) 1999-2004 Nemosoft Unv.
   (C) 2004-2006 Luc Saillard (luc@saillard.org)
   (C) 2011 Hans de Goede <hdegoede@redhat.com>

   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
   driver and thus may have bugs that are not present in the original version.
   Please send bug reports and support requests to <luc@saillard.org>.
   The decompression routines have been implemented by reverse-engineering the
   Nemosoft binary pwcx module. Caveat emptor.

   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.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

#include <linux/errno.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/poll.h>
#include <linux/vmalloc.h>
#include <linux/jiffies.h>
#include <asm/io.h>

#include "pwc.h"

#define PWC_CID_CUSTOM(ctrl) ((V4L2_CID_USER_BASE | 0xf000) + custom_ ## ctrl)

static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl);
static int pwc_s_ctrl(struct v4l2_ctrl *ctrl);

static const struct v4l2_ctrl_ops pwc_ctrl_ops = {
	.g_volatile_ctrl = pwc_g_volatile_ctrl,
	.s_ctrl = pwc_s_ctrl,
};

enum { awb_indoor, awb_outdoor, awb_fl, awb_manual, awb_auto };
enum { custom_autocontour, custom_contour, custom_noise_reduction,
	custom_save_user, custom_restore_user, custom_restore_factory };

const char * const pwc_auto_whitebal_qmenu[] = {
	"Indoor (Incandescant Lighting) Mode",
	"Outdoor (Sunlight) Mode",
	"Indoor (Fluorescent Lighting) Mode",
	"Manual Mode",
	"Auto Mode",
	NULL
};

static const struct v4l2_ctrl_config pwc_auto_white_balance_cfg = {
	.ops	= &pwc_ctrl_ops,
	.id	= V4L2_CID_AUTO_WHITE_BALANCE,
	.type	= V4L2_CTRL_TYPE_MENU,
	.max	= awb_auto,
	.qmenu	= pwc_auto_whitebal_qmenu,
};

static const struct v4l2_ctrl_config pwc_autocontour_cfg = {
	.ops	= &pwc_ctrl_ops,
	.id	= PWC_CID_CUSTOM(autocontour),
	.type	= V4L2_CTRL_TYPE_BOOLEAN,
	.name	= "Auto contour",
	.min	= 0,
	.max	= 1,
	.step	= 1,
};

static const struct v4l2_ctrl_config pwc_contour_cfg = {
	.ops	= &pwc_ctrl_ops,
	.id	= PWC_CID_CUSTOM(contour),
	.type	= V4L2_CTRL_TYPE_INTEGER,
	.name	= "Contour",
	.min	= 0,
	.max	= 63,
	.step	= 1,
};

static const struct v4l2_ctrl_config pwc_backlight_cfg = {
	.ops	= &pwc_ctrl_ops,
	.id	= V4L2_CID_BACKLIGHT_COMPENSATION,
	.type	= V4L2_CTRL_TYPE_BOOLEAN,
	.min	= 0,
	.max	= 1,
	.step	= 1,
};

static const struct v4l2_ctrl_config pwc_flicker_cfg = {
	.ops	= &pwc_ctrl_ops,
	.id	= V4L2_CID_BAND_STOP_FILTER,
	.type	= V4L2_CTRL_TYPE_BOOLEAN,
	.min	= 0,
	.max	= 1,
	.step	= 1,
};

static const struct v4l2_ctrl_config pwc_noise_reduction_cfg = {
	.ops	= &pwc_ctrl_ops,
	.id	= PWC_CID_CUSTOM(noise_reduction),
	.type	= V4L2_CTRL_TYPE_INTEGER,
	.name	= "Dynamic Noise Reduction",
	.min	= 0,
	.max	= 3,
	.step	= 1,
};

static const struct v4l2_ctrl_config pwc_save_user_cfg = {
	.ops	= &pwc_ctrl_ops,
	.id	= PWC_CID_CUSTOM(save_user),
	.type	= V4L2_CTRL_TYPE_BUTTON,
<