548 lines
14 KiB
C
548 lines
14 KiB
C
/*
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em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices
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Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
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Ludovico Cavedon <cavedon@sssup.it>
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Mauro Carvalho Chehab <mchehab@infradead.org>
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Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _EM28XX_H
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#define _EM28XX_H
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#include <linux/videodev2.h>
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#include <linux/i2c.h>
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#include <linux/mutex.h>
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#include <media/ir-kbd-i2c.h>
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#define UNSET -1
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/* maximum number of em28xx boards */
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#define EM28XX_MAXBOARDS 1 /*FIXME: should be bigger */
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/* maximum number of frames that can be queued */
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#define EM28XX_NUM_FRAMES 5
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/* number of frames that get used for v4l2_read() */
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#define EM28XX_NUM_READ_FRAMES 2
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/* number of buffers for isoc transfers */
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#define EM28XX_NUM_BUFS 5
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/* number of packets for each buffer
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windows requests only 40 packets .. so we better do the same
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this is what I found out for all alternate numbers there!
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*/
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#define EM28XX_NUM_PACKETS 40
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/* default alternate; 0 means choose the best */
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#define EM28XX_PINOUT 0
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#define EM28XX_INTERLACED_DEFAULT 1
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/*
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#define (use usbview if you want to get the other alternate number infos)
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#define
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#define alternate number 2
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#define Endpoint Address: 82
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Direction: in
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Attribute: 1
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Type: Isoc
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Max Packet Size: 1448
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Interval: 125us
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alternate number 7
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Endpoint Address: 82
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Direction: in
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Attribute: 1
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Type: Isoc
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Max Packet Size: 3072
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Interval: 125us
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*/
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/* time to wait when stopping the isoc transfer */
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#define EM28XX_URB_TIMEOUT msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
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/* time in msecs to wait for i2c writes to finish */
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#define EM2800_I2C_WRITE_TIMEOUT 20
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/* the various frame states */
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enum em28xx_frame_state {
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F_UNUSED = 0,
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F_QUEUED,
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F_GRABBING,
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F_DONE,
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F_ERROR,
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};
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/* stream states */
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enum em28xx_stream_state {
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STREAM_OFF,
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STREAM_INTERRUPT,
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STREAM_ON,
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};
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/* frames */
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struct em28xx_frame_t {
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void *bufmem;
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struct v4l2_buffer buf;
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enum em28xx_frame_state state;
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struct list_head frame;
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unsigned long vma_use_count;
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int top_field;
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int fieldbytesused;
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};
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/* io methods */
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enum em28xx_io_method {
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IO_NONE,
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IO_READ,
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IO_MMAP,
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};
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/* inputs */
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#define MAX_EM28XX_INPUT 4
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enum enum28xx_itype {
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EM28XX_VMUX_COMPOSITE1 = 1,
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EM28XX_VMUX_COMPOSITE2,
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EM28XX_VMUX_COMPOSITE3,
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EM28XX_VMUX_COMPOSITE4,
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EM28XX_VMUX_SVIDEO,
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EM28XX_VMUX_TELEVISION,
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EM28XX_VMUX_CABLE,
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EM28XX_VMUX_DVB,
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EM28XX_VMUX_DEBUG,
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EM28XX_RADIO,
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};
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enum em28xx_amux {
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EM28XX_AMUX_VIDEO,
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EM28XX_AMUX_LINE_IN,
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EM28XX_AMUX_AC97_VIDEO,
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EM28XX_AMUX_AC97_LINE_IN,
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};
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struct em28xx_input {
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enum enum28xx_itype type;
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unsigned int vmux;
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enum em28xx_amux amux;
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};
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#define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
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enum em28xx_decoder {
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EM28XX_TVP5150,
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EM28XX_SAA7113,
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EM28XX_SAA7114
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};
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struct em28xx_board {
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char *name;
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int vchannels;
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int tuner_type;
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/* i2c flags */
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unsigned int tda9887_conf;
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unsigned int is_em2800:1;
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unsigned int has_msp34xx:1;
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unsigned int mts_firmware:1;
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unsigned int has_12mhz_i2s:1;
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unsigned int max_range_640_480:1;
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unsigned int analog_gpio;
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enum em28xx_decoder decoder;
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struct em28xx_input input[MAX_EM28XX_INPUT];
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struct em28xx_input radio;
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};
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struct em28xx_eeprom {
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u32 id; /* 0x9567eb1a */
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u16 vendor_ID;
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u16 product_ID;
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u16 chip_conf;
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u16 board_conf;
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u16 string1, string2, string3;
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u8 string_idx_table;
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};
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/* device states */
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enum em28xx_dev_state {
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DEV_INITIALIZED = 0x01,
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DEV_DISCONNECTED = 0x02,
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DEV_MISCONFIGURED = 0x04,
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};
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#define EM28XX_AUDIO_BUFS 5
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#define EM28XX_NUM_AUDIO_PACKETS 64
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#define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
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#define EM28XX_CAPTURE_STREAM_EN 1
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#define EM28XX_AUDIO 0x10
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struct em28xx_audio {
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char name[50];
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char *transfer_buffer[EM28XX_AUDIO_BUFS];
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struct urb *urb[EM28XX_AUDIO_BUFS];
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struct usb_device *udev;
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unsigned int capture_transfer_done;
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struct snd_pcm_substream *capture_pcm_substream;
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unsigned int hwptr_done_capture;
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struct snd_card *sndcard;
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int users, shutdown;
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enum em28xx_stream_state capture_stream;
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spinlock_t slock;
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};
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/* main device struct */
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struct em28xx {
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/* generic device properties */
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char name[30]; /* name (including minor) of the device */
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int model; /* index in the device_data struct */
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int devno; /* marks the number of this device */
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unsigned int analog_gpio;
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unsigned int is_em2800:1;
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unsigned int has_msp34xx:1;
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unsigned int has_tda9887:1;
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unsigned int stream_on:1; /* Locks streams */
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unsigned int has_audio_class:1;
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unsigned int has_12mhz_i2s:1;
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unsigned int max_range_640_480:1;
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int video_inputs; /* number of video inputs */
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struct list_head devlist;
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u32 i2s_speed; /* I2S speed for audio digital stream */
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enum em28xx_decoder decoder;
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int tuner_type; /* type of the tuner */
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int tuner_addr; /* tuner address */
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int tda9887_conf;
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/* i2c i/o */
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struct i2c_adapter i2c_adap;
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struct i2c_client i2c_client;
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/* video for linux */
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int users; /* user count for exclusive use */
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struct video_device *vdev; /* video for linux device struct */
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v4l2_std_id norm; /* selected tv norm */
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int ctl_freq; /* selected frequency */
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unsigned int ctl_input; /* selected input */
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unsigned int ctl_ainput; /* slected audio input */
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int mute;
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int volume;
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/* frame properties */
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struct em28xx_frame_t frame[EM28XX_NUM_FRAMES]; /* list of frames */
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int num_frames; /* number of frames currently in use */
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unsigned int frame_count; /* total number of transfered frames */
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struct em28xx_frame_t *frame_current; /* the frame that is being filled */
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int width; /* current frame width */
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int height; /* current frame height */
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int frame_size; /* current frame size */
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int field_size; /* current field size */
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int bytesperline;
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int hscale; /* horizontal scale factor (see datasheet) */
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int vscale; /* vertical scale factor (see datasheet) */
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int interlaced; /* 1=interlace fileds, 0=just top fileds */
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int type;
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unsigned int video_bytesread; /* Number of bytes read */
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unsigned long hash; /* eeprom hash - for boards with generic ID */
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unsigned long i2c_hash; /* i2c devicelist hash - for boards with generic ID */
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struct em28xx_audio *adev;
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/* states */
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enum em28xx_dev_state state;
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enum em28xx_stream_state stream;
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enum em28xx_io_method io;
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struct work_struct request_module_wk;
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/* locks */
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struct mutex lock;
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spinlock_t queue_lock;
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struct list_head inqueue, outqueue;
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wait_queue_head_t open, wait_frame, wait_stream;
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struct video_device *vbi_dev;
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struct video_device *radio_dev;
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unsigned char eedata[256];
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/* usb transfer */
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struct usb_device *udev; /* the usb device */
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int alt; /* alternate */
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int max_pkt_size; /* max packet size of isoc transaction */
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int num_alt; /* Number of alternative settings */
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unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
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struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */
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char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc transfer */
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/* helper funcs that call usb_control_msg */
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int (*em28xx_write_regs) (struct em28xx * dev, u16 reg, char *buf,
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int len);
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int (*em28xx_read_reg) (struct em28xx * dev, u16 reg);
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int (*em28xx_read_reg_req_len) (struct em28xx * dev, u8 req, u16 reg,
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char *buf, int len);
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int (*em28xx_write_regs_req) (struct em28xx * dev, u8 req, u16 reg,
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char *buf, int len);
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int (*em28xx_read_reg_req) (struct em28xx * dev, u8 req, u16 reg);
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};
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struct em28xx_fh {
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struct em28xx *dev;
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unsigned int stream_on:1; /* Locks streams */
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int radio;
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};
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struct em28xx_ops {
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struct list_head next;
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char *name;
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int id;
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int (*init)(struct em28xx *);
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int (*fini)(struct em28xx *);
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};
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/* Provided by em28xx-i2c.c */
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void em28xx_i2c_call_clients(struct em28xx *dev, unsigned int cmd, void *arg);
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void em28xx_do_i2c_scan(struct em28xx *dev);
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int em28xx_i2c_register(struct em28xx *dev);
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int em28xx_i2c_unregister(struct em28xx *dev);
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/* Provided by em28xx-core.c */
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u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
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void em28xx_queue_unusedframes(struct em28xx *dev);
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void em28xx_release_buffers(struct em28xx *dev);
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int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
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char *buf, int len);
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int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
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int em28xx_read_reg(struct em28xx *dev, u16 reg);
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int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
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int len);
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int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
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int em28xx_audio_analog_set(struct em28xx *dev);
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int em28xx_colorlevels_set_default(struct em28xx *dev);
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int em28xx_capture_start(struct em28xx *dev, int start);
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int em28xx_outfmt_set_yuv422(struct em28xx *dev);
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int em28xx_resolution_set(struct em28xx *dev);
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int em28xx_init_isoc(struct em28xx *dev);
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void em28xx_uninit_isoc(struct em28xx *dev);
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int em28xx_set_alternate(struct em28xx *dev);
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/* Provided by em28xx-video.c */
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int em28xx_register_extension(struct em28xx_ops *dev);
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void em28xx_unregister_extension(struct em28xx_ops *dev);
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/* Provided by em28xx-cards.c */
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extern int em2800_variant_detect(struct usb_device* udev,int model);
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extern void em28xx_pre_card_setup(struct em28xx *dev);
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extern void em28xx_card_setup(struct em28xx *dev);
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extern struct em28xx_board em28xx_boards[];
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extern struct usb_device_id em28xx_id_table[];
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extern const unsigned int em28xx_bcount;
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void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
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/* Provided by em28xx-input.c */
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/* TODO: Check if the standard get_key handlers on ir-common can be used */
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int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
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int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
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int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
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u32 *ir_raw);
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/* em2800 registers */
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#define EM2800_AUDIOSRC_REG 0x08
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/* em28xx registers */
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#define I2C_CLK_REG 0x06
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#define CHIPID_REG 0x0a
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#define USBSUSP_REG 0x0c /* */
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#define AUDIOSRC_REG 0x0e
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#define XCLK_REG 0x0f
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#define VINMODE_REG 0x10
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#define VINCTRL_REG 0x11
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#define VINENABLE_REG 0x12 /* */
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#define GAMMA_REG 0x14
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#define RGAIN_REG 0x15
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#define GGAIN_REG 0x16
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#define BGAIN_REG 0x17
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#define ROFFSET_REG 0x18
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#define GOFFSET_REG 0x19
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#define BOFFSET_REG 0x1a
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#define OFLOW_REG 0x1b
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#define HSTART_REG 0x1c
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#define VSTART_REG 0x1d
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#define CWIDTH_REG 0x1e
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#define CHEIGHT_REG 0x1f
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#define YGAIN_REG 0x20
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#define YOFFSET_REG 0x21
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#define UVGAIN_REG 0x22
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#define UOFFSET_REG 0x23
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#define VOFFSET_REG 0x24
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#define SHARPNESS_REG 0x25
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#define COMPR_REG 0x26
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#define OUTFMT_REG 0x27
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#define XMIN_REG 0x28
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#define XMAX_REG 0x29
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#define YMIN_REG 0x2a
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#define YMAX_REG 0x2b
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#define HSCALELOW_REG 0x30
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#define HSCALEHIGH_REG 0x31
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#define VSCALELOW_REG 0x32
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#define VSCALEHIGH_REG 0x33
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#define AC97LSB_REG 0x40
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#define AC97MSB_REG 0x41
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#define AC97ADDR_REG 0x42
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#define AC97BUSY_REG 0x43
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/* em202 registers */
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#define MASTER_AC97 0x02
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#define LINE_IN_AC97 0x10
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#define VIDEO_AC97 0x14
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/* register settings */
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#define EM2800_AUDIO_SRC_TUNER 0x0d
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#define EM2800_AUDIO_SRC_LINE 0x0c
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#define EM28XX_AUDIO_SRC_TUNER 0xc0
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#define EM28XX_AUDIO_SRC_LINE 0x80
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/* printk macros */
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#define em28xx_err(fmt, arg...) do {\
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printk(KERN_ERR fmt , ##arg); } while (0)
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#define em28xx_errdev(fmt, arg...) do {\
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printk(KERN_ERR "%s: "fmt,\
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dev->name , ##arg); } while (0)
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#define em28xx_info(fmt, arg...) do {\
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printk(KERN_INFO "%s: "fmt,\
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dev->name , ##arg); } while (0)
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#define em28xx_warn(fmt, arg...) do {\
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printk(KERN_WARNING "%s: "fmt,\
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dev->name , ##arg); } while (0)
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inline static int em28xx_compression_disable(struct em28xx *dev)
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{
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/* side effect of disabling scaler and mixer */
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return em28xx_write_regs(dev, COMPR_REG, "\x00", 1);
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}
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inline static int em28xx_contrast_get(struct em28xx *dev)
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{
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return em28xx_read_reg(dev, YGAIN_REG) & 0x1f;
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}
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inline static int em28xx_brightness_get(struct em28xx *dev)
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{
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return em28xx_read_reg(dev, YOFFSET_REG);
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}
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inline static int em28xx_saturation_get(struct em28xx *dev)
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{
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return em28xx_read_reg(dev, UVGAIN_REG) & 0x1f;
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}
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inline static int em28xx_u_balance_get(struct em28xx *dev)
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{
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return em28xx_read_reg(dev, UOFFSET_REG);
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}
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inline static int em28xx_v_balance_get(struct em28xx *dev)
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{
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return em28xx_read_reg(dev, VOFFSET_REG);
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}
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inline static int em28xx_gamma_get(struct em28xx *dev)
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{
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return em28xx_read_reg(dev, GAMMA_REG) & 0x3f;
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}
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inline static int em28xx_contrast_set(struct em28xx *dev, s32 val)
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{
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u8 tmp = (u8) val;
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return em28xx_write_regs(dev, YGAIN_REG, &tmp, 1);
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}
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|
|
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inline static int em28xx_brightness_set(struct em28xx *dev, s32 val)
|
|
{
|
|
u8 tmp = (u8) val;
|
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return em28xx_write_regs(dev, YOFFSET_REG, &tmp, 1);
|
|
}
|
|
|
|
inline static int em28xx_saturation_set(struct em28xx *dev, s32 val)
|
|
{
|
|
u8 tmp = (u8) val;
|
|
return em28xx_write_regs(dev, UVGAIN_REG, &tmp, 1);
|
|
}
|
|
|
|
inline static int em28xx_u_balance_set(struct em28xx *dev, s32 val)
|
|
{
|
|
u8 tmp = (u8) val;
|
|
return em28xx_write_regs(dev, UOFFSET_REG, &tmp, 1);
|
|
}
|
|
|
|
inline static int em28xx_v_balance_set(struct em28xx *dev, s32 val)
|
|
{
|
|
u8 tmp = (u8) val;
|
|
return em28xx_write_regs(dev, VOFFSET_REG, &tmp, 1);
|
|
}
|
|
|
|
inline static int em28xx_gamma_set(struct em28xx *dev, s32 val)
|
|
{
|
|
u8 tmp = (u8) val;
|
|
return em28xx_write_regs(dev, GAMMA_REG, &tmp, 1);
|
|
}
|
|
|
|
/*FIXME: maxw should be dependent of alt mode */
|
|
inline static unsigned int norm_maxw(struct em28xx *dev)
|
|
{
|
|
if (dev->max_range_640_480)
|
|
return 640;
|
|
else
|
|
return 720;
|
|
}
|
|
|
|
inline static unsigned int norm_maxh(struct em28xx *dev)
|
|
{
|
|
if (dev->max_range_640_480)
|
|
return 480;
|
|
else
|
|
return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
|
|
}
|
|
#endif
|