Initial import

1 files changed, 393 insertions, 0 deletions

diff --git a/drivers/media/usb/pwc/pwc.h b/drivers/media/usb/pwc/pwc.h
new file mode 100644
index 000000000..81b017a55
--- /dev/null
+++ b/drivers/media/usb/pwc/pwc.h
@@ -0,0 +1,393 @@
+/* (C) 1999-2003 Nemosoft Unv.
+   (C) 2004-2006 Luc Saillard (luc@saillard.org)
+
+   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
+*/
+
+#ifndef PWC_H
+#define PWC_H
+
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/spinlock.h>
+#include <linux/wait.h>
+#include <linux/mutex.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <asm/errno.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
+#include <media/videobuf2-vmalloc.h>
+#ifdef CONFIG_USB_PWC_INPUT_EVDEV
+#include <linux/input.h>
+#endif
+#include "pwc-dec1.h"
+#include "pwc-dec23.h"
+
+/* Version block */
+#define PWC_VERSION	"10.0.15"
+#define PWC_NAME 	"pwc"
+#define PFX		PWC_NAME ": "
+
+
+/* Trace certain actions in the driver */
+#define PWC_DEBUG_LEVEL_MODULE	(1<<0)
+#define PWC_DEBUG_LEVEL_PROBE	(1<<1)
+#define PWC_DEBUG_LEVEL_OPEN	(1<<2)
+#define PWC_DEBUG_LEVEL_READ	(1<<3)
+#define PWC_DEBUG_LEVEL_MEMORY	(1<<4)
+#define PWC_DEBUG_LEVEL_FLOW	(1<<5)
+#define PWC_DEBUG_LEVEL_SIZE	(1<<6)
+#define PWC_DEBUG_LEVEL_IOCTL	(1<<7)
+#define PWC_DEBUG_LEVEL_TRACE	(1<<8)
+
+#define PWC_DEBUG_MODULE(fmt, args...) PWC_DEBUG(MODULE, fmt, ##args)
+#define PWC_DEBUG_PROBE(fmt, args...) PWC_DEBUG(PROBE, fmt, ##args)
+#define PWC_DEBUG_OPEN(fmt, args...) PWC_DEBUG(OPEN, fmt, ##args)
+#define PWC_DEBUG_READ(fmt, args...) PWC_DEBUG(READ, fmt, ##args)
+#define PWC_DEBUG_MEMORY(fmt, args...) PWC_DEBUG(MEMORY, fmt, ##args)
+#define PWC_DEBUG_FLOW(fmt, args...) PWC_DEBUG(FLOW, fmt, ##args)
+#define PWC_DEBUG_SIZE(fmt, args...) PWC_DEBUG(SIZE, fmt, ##args)
+#define PWC_DEBUG_IOCTL(fmt, args...) PWC_DEBUG(IOCTL, fmt, ##args)
+#define PWC_DEBUG_TRACE(fmt, args...) PWC_DEBUG(TRACE, fmt, ##args)
+
+
+#ifdef CONFIG_USB_PWC_DEBUG
+
+#define PWC_DEBUG_LEVEL	(PWC_DEBUG_LEVEL_MODULE)
+
+#define PWC_DEBUG(level, fmt, args...) do {\
+	if ((PWC_DEBUG_LEVEL_ ##level) & pwc_trace) \
+		printk(KERN_DEBUG PFX fmt, ##args); \
+	} while (0)
+
+#define PWC_ERROR(fmt, args...) printk(KERN_ERR PFX fmt, ##args)
+#define PWC_WARNING(fmt, args...) printk(KERN_WARNING PFX fmt, ##args)
+#define PWC_INFO(fmt, args...) printk(KERN_INFO PFX fmt, ##args)
+#define PWC_TRACE(fmt, args...) PWC_DEBUG(TRACE, fmt, ##args)
+
+#else /* if ! CONFIG_USB_PWC_DEBUG */
+
+#define PWC_ERROR(fmt, args...) printk(KERN_ERR PFX fmt, ##args)
+#define PWC_WARNING(fmt, args...) printk(KERN_WARNING PFX fmt, ##args)
+#define PWC_INFO(fmt, args...) printk(KERN_INFO PFX fmt, ##args)
+#define PWC_TRACE(fmt, args...) do { } while(0)
+#define PWC_DEBUG(level, fmt, args...) do { } while(0)
+
+#define pwc_trace 0
+
+#endif
+
+/* Defines for ToUCam cameras */
+#define TOUCAM_HEADER_SIZE		8
+#define TOUCAM_TRAILER_SIZE		4
+
+#define FEATURE_MOTOR_PANTILT		0x0001
+#define FEATURE_CODEC1			0x0002
+#define FEATURE_CODEC2			0x0004
+
+#define MAX_WIDTH		640
+#define MAX_HEIGHT		480
+
+/* Ignore errors in the first N frames, to allow for startup delays */
+#define FRAME_LOWMARK 5
+
+/* Size and number of buffers for the ISO pipe. */
+#define MAX_ISO_BUFS		3
+#define ISO_FRAMES_PER_DESC	10
+#define ISO_MAX_FRAME_SIZE	960
+#define ISO_BUFFER_SIZE 	(ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
+
+/* Maximum size after decompression is 640x480 YUV data, 1.5 * 640 * 480 */
+#define PWC_FRAME_SIZE 		(460800 + TOUCAM_HEADER_SIZE + TOUCAM_TRAILER_SIZE)
+
+/* Absolute minimum and maximum number of buffers available for mmap() */
+#define MIN_FRAMES		2
+#define MAX_FRAMES		16
+
+/* Some macros to quickly find the type of a webcam */
+#define DEVICE_USE_CODEC1(x) ((x)<675)
+#define DEVICE_USE_CODEC2(x) ((x)>=675 && (x)<700)
+#define DEVICE_USE_CODEC3(x) ((x)>=700)
+#define DEVICE_USE_CODEC23(x) ((x)>=675)
+
+/* Request types: video */
+#define SET_LUM_CTL			0x01
+#define GET_LUM_CTL			0x02
+#define SET_CHROM_CTL			0x03
+#define GET_CHROM_CTL			0x04
+#define SET_STATUS_CTL			0x05
+#define GET_STATUS_CTL			0x06
+#define SET_EP_STREAM_CTL		0x07
+#define GET_EP_STREAM_CTL		0x08
+#define GET_XX_CTL			0x09
+#define SET_XX_CTL			0x0A
+#define GET_XY_CTL			0x0B
+#define SET_XY_CTL			0x0C
+#define SET_MPT_CTL			0x0D
+#define GET_MPT_CTL			0x0E
+
+/* Selectors for the Luminance controls [GS]ET_LUM_CTL */
+#define AGC_MODE_FORMATTER			0x2000
+#define PRESET_AGC_FORMATTER			0x2100
+#define SHUTTER_MODE_FORMATTER			0x2200
+#define PRESET_SHUTTER_FORMATTER		0x2300
+#define PRESET_CONTOUR_FORMATTER		0x2400
+#define AUTO_CONTOUR_FORMATTER			0x2500
+#define BACK_LIGHT_COMPENSATION_FORMATTER	0x2600
+#define CONTRAST_FORMATTER			0x2700
+#define DYNAMIC_NOISE_CONTROL_FORMATTER		0x2800
+#define FLICKERLESS_MODE_FORMATTER		0x2900
+#define AE_CONTROL_SPEED			0x2A00
+#define BRIGHTNESS_FORMATTER			0x2B00
+#define GAMMA_FORMATTER				0x2C00
+
+/* Selectors for the Chrominance controls [GS]ET_CHROM_CTL */
+#define WB_MODE_FORMATTER			0x1000
+#define AWB_CONTROL_SPEED_FORMATTER		0x1100
+#define AWB_CONTROL_DELAY_FORMATTER		0x1200
+#define PRESET_MANUAL_RED_GAIN_FORMATTER	0x1300
+#define PRESET_MANUAL_BLUE_GAIN_FORMATTER	0x1400
+#define COLOUR_MODE_FORMATTER			0x1500
+#define SATURATION_MODE_FORMATTER1		0x1600
+#define SATURATION_MODE_FORMATTER2		0x1700
+
+/* Selectors for the Status controls [GS]ET_STATUS_CTL */
+#define SAVE_USER_DEFAULTS_FORMATTER		0x0200
+#define RESTORE_USER_DEFAULTS_FORMATTER		0x0300
+#define RESTORE_FACTORY_DEFAULTS_FORMATTER	0x0400
+#define READ_AGC_FORMATTER			0x0500
+#define READ_SHUTTER_FORMATTER			0x0600
+#define READ_RED_GAIN_FORMATTER			0x0700
+#define READ_BLUE_GAIN_FORMATTER		0x0800
+
+/* Formatters for the motorized pan & tilt [GS]ET_MPT_CTL */
+#define PT_RELATIVE_CONTROL_FORMATTER		0x01
+#define PT_RESET_CONTROL_FORMATTER		0x02
+#define PT_STATUS_FORMATTER			0x03
+
+/* Enumeration of image sizes */
+#define PSZ_SQCIF	0x00
+#define PSZ_QSIF	0x01
+#define PSZ_QCIF	0x02
+#define PSZ_SIF		0x03
+#define PSZ_CIF		0x04
+#define PSZ_VGA		0x05
+#define PSZ_MAX		6
+
+struct pwc_raw_frame {
+	__le16 type;		/* type of the webcam */
+	__le16 vbandlength;	/* Size of 4 lines compressed (used by the
+				   decompressor) */
+	__u8   cmd[4];		/* the four byte of the command (in case of
+				   nala, only the first 3 bytes is filled) */
+	__u8   rawframe[0];	/* frame_size = H / 4 * vbandlength */
+} __packed;
+
+/* intermediate buffers with raw data from the USB cam */
+struct pwc_frame_buf
+{
+	struct vb2_buffer vb;	/* common v4l buffer stuff -- must be first */
+	struct list_head list;
+	void *data;
+	int filled;		/* number of bytes filled */
+};
+
+struct pwc_device
+{
+	struct video_device vdev;
+	struct v4l2_device v4l2_dev;
+
+	/* videobuf2 queue and queued buffers list */
+	struct vb2_queue vb_queue;
+	struct list_head queued_bufs;
+	spinlock_t queued_bufs_lock; /* Protects queued_bufs */
+
+	/* If taking both locks vb_queue_lock must always be locked first! */
+	struct mutex v4l2_lock;      /* Protects everything else */
+	struct mutex vb_queue_lock;  /* Protects vb_queue and capt_file */
+
+	/* Pointer to our usb_device, will be NULL after unplug */
+	struct usb_device *udev; /* Both mutexes most be hold when setting! */
+
+	/* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */
+	int type;
+	int release;		/* release number */
+	int features;		/* feature bits */
+
+	/*** Video data ***/
+	int vendpoint;		/* video isoc endpoint */
+	int vcinterface;	/* video control interface */
+	int valternate;		/* alternate interface needed */
+	int vframes;		/* frames-per-second */
+	int pixfmt;		/* pixelformat: V4L2_PIX_FMT_YUV420 or _PWCX */
+	int vframe_count;	/* received frames */
+	int vmax_packet_size;	/* USB maxpacket size */
+	int vlast_packet_size;	/* for frame synchronisation */
+	int visoc_errors;	/* number of contiguous ISOC errors */
+	int vbandlength;	/* compressed band length; 0 is uncompressed */
+	char vsync;		/* used by isoc handler */
+	char vmirror;		/* for ToUCaM series */
+	char power_save;	/* Do powersaving for this cam */
+
+	unsigned char cmd_buf[13];
+	unsigned char *ctrl_buf;
+
+	struct urb *urbs[MAX_ISO_BUFS];
+
+	/*
+	 * Frame currently being filled, this only gets touched by the
+	 * isoc urb complete handler, and by stream start / stop since
+	 * start / stop touch it before / after starting / killing the urbs
+	 * no locking is needed around this
+	 */
+	struct pwc_frame_buf *fill_buf;
+
+	int frame_header_size, frame_trailer_size;
+	int frame_size;
+	int frame_total_size;	/* including header & trailer */
+	int drop_frames;
+
+	union {	/* private data for decompression engine */
+		struct pwc_dec1_private dec1;
+		struct pwc_dec23_private dec23;
+	};
+
+	/*
+	 * We have an 'image' and a 'view', where 'image' is the fixed-size img
+	 * as delivered by the camera, and 'view' is the size requested by the
+	 * program. The camera image is centered in this viewport, laced with
+	 * a gray or black border. view_min <= image <= view <= view_max;
+	 */
+	int image_mask;				/* supported sizes */
+	int width, height;			/* current resolution */
+
+#ifdef CONFIG_USB_PWC_INPUT_EVDEV
+	struct input_dev *button_dev;	/* webcam snapshot button input */
+	char button_phys[64];
+#endif
+
+	/* controls */
+	struct v4l2_ctrl_handler	ctrl_handler;
+	u16				saturation_fmt;
+	struct v4l2_ctrl		*brightness;
+	struct v4l2_ctrl		*contrast;
+	struct v4l2_ctrl		*saturation;
+	struct v4l2_ctrl		*gamma;
+	struct {
+		/* awb / red-blue balance cluster */
+		struct v4l2_ctrl	*auto_white_balance;
+		struct v4l2_ctrl	*red_balance;
+		struct v4l2_ctrl	*blue_balance;
+		/* usb ctrl transfers are slow, so we cache things */
+		int			color_bal_valid;
+		unsigned long		last_color_bal_update; /* In jiffies */
+		s32			last_red_balance;
+		s32			last_blue_balance;
+	};
+	struct {
+		/* autogain / gain cluster */
+		struct v4l2_ctrl	*autogain;
+		struct v4l2_ctrl	*gain;
+		int			gain_valid;
+		unsigned long		last_gain_update; /* In jiffies */
+		s32			last_gain;
+	};
+	struct {
+		/* exposure_auto / exposure cluster */
+		struct v4l2_ctrl	*exposure_auto;
+		struct v4l2_ctrl	*exposure;
+		int			exposure_valid;
+		unsigned long		last_exposure_update; /* In jiffies */
+		s32			last_exposure;
+	};
+	struct v4l2_ctrl		*colorfx;
+	struct {
+		/* autocontour/contour cluster */
+		struct v4l2_ctrl	*autocontour;
+		struct v4l2_ctrl	*contour;
+	};
+	struct v4l2_ctrl		*backlight;
+	struct v4l2_ctrl		*flicker;
+	struct v4l2_ctrl		*noise_reduction;
+	struct v4l2_ctrl		*save_user;
+	struct v4l2_ctrl		*restore_user;
+	struct v4l2_ctrl		*restore_factory;
+	struct v4l2_ctrl		*awb_speed;
+	struct v4l2_ctrl		*awb_delay;
+	struct {
+		/* motor control cluster */
+		struct v4l2_ctrl	*motor_pan;
+		struct v4l2_ctrl	*motor_tilt;
+		struct v4l2_ctrl	*motor_pan_reset;
+		struct v4l2_ctrl	*motor_tilt_reset;
+	};
+	/* CODEC3 models have both gain and exposure controlled by autogain */
+	struct v4l2_ctrl		*autogain_expo_cluster[3];
+};
+
+/* Global variables */
+#ifdef CONFIG_USB_PWC_DEBUG
+extern int pwc_trace;
+#endif
+
+/** Functions in pwc-misc.c */
+/* sizes in pixels */
+extern const int pwc_image_sizes[PSZ_MAX][2];
+
+int pwc_get_size(struct pwc_device *pdev, int width, int height);
+void pwc_construct(struct pwc_device *pdev);
+
+/** Functions in pwc-ctrl.c */
+/* Request a certain video mode. Returns < 0 if not possible */
+extern int pwc_set_video_mode(struct pwc_device *pdev, int width, int height,
+	int pixfmt, int frames, int *compression, int send_to_cam);
+extern unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size);
+extern int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value);
+extern int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor);
+extern int send_control_msg(struct pwc_device *pdev,
+			    u8 request, u16 value, void *buf, int buflen);
+
+/* Control get / set helpers */
+int pwc_get_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data);
+int pwc_set_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, u8 data);
+int pwc_get_s8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data);
+#define pwc_set_s8_ctrl pwc_set_u8_ctrl
+int pwc_get_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *dat);
+int pwc_set_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, u16 data);
+int pwc_button_ctrl(struct pwc_device *pdev, u16 value);
+int pwc_init_controls(struct pwc_device *pdev);
+
+/* Power down or up the camera; not supported by all models */
+extern void pwc_camera_power(struct pwc_device *pdev, int power);
+
+extern const struct v4l2_ioctl_ops pwc_ioctl_ops;
+
+/** pwc-uncompress.c */
+/* Expand frame to image, possibly including decompression. Uses read_frame and fill_image */
+int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf);
+
+#endif