286 lines
7.2 KiB
C
286 lines
7.2 KiB
C
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/*
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* Driver for the Auvitek AU0828 USB bridge
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*
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* Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
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*
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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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*
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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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*
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* GNU General Public License for more details.
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*
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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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#include <linux/usb.h>
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#include <linux/i2c.h>
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#include <linux/i2c-algo-bit.h>
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#include <media/tveeprom.h>
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/* Analog */
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#include <linux/videodev2.h>
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#include <media/videobuf-vmalloc.h>
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#include <media/v4l2-device.h>
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/* DVB */
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#include "demux.h"
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#include "dmxdev.h"
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#include "dvb_demux.h"
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#include "dvb_frontend.h"
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#include "dvb_net.h"
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#include "dvbdev.h"
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#include "au0828-reg.h"
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#include "au0828-cards.h"
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#define DRIVER_NAME "au0828"
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#define URB_COUNT 16
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#define URB_BUFSIZE (0xe522)
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/* Analog constants */
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#define NTSC_STD_W 720
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#define NTSC_STD_H 480
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#define AU0828_INTERLACED_DEFAULT 1
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#define V4L2_CID_PRIVATE_SHARPNESS (V4L2_CID_PRIVATE_BASE + 0)
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/* Defination for AU0828 USB transfer */
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#define AU0828_MAX_ISO_BUFS 12 /* maybe resize this value in the future */
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#define AU0828_ISO_PACKETS_PER_URB 10
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#define AU0828_MIN_BUF 4
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#define AU0828_DEF_BUF 8
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#define AU0828_MAX_INPUT 4
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enum au0828_itype {
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AU0828_VMUX_UNDEFINED = 0,
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AU0828_VMUX_COMPOSITE,
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AU0828_VMUX_SVIDEO,
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AU0828_VMUX_CABLE,
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AU0828_VMUX_TELEVISION,
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AU0828_VMUX_DVB,
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AU0828_VMUX_DEBUG
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};
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struct au0828_input {
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enum au0828_itype type;
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unsigned int vmux;
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unsigned int amux;
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void (*audio_setup) (void *priv, int enable);
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};
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struct au0828_board {
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char *name;
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unsigned int tuner_type;
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unsigned char tuner_addr;
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unsigned char i2c_clk_divider;
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struct au0828_input input[AU0828_MAX_INPUT];
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};
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struct au0828_dvb {
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struct mutex lock;
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struct dvb_adapter adapter;
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struct dvb_frontend *frontend;
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struct dvb_demux demux;
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struct dmxdev dmxdev;
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struct dmx_frontend fe_hw;
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struct dmx_frontend fe_mem;
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struct dvb_net net;
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int feeding;
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};
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enum au0828_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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#define AUVI_INPUT(nr) (dev->board.input[nr])
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/* device state */
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enum au0828_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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struct au0828_fh {
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struct au0828_dev *dev;
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unsigned int stream_on:1; /* Locks streams */
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struct videobuf_queue vb_vidq;
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enum v4l2_buf_type type;
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};
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struct au0828_usb_isoc_ctl {
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/* max packet size of isoc transaction */
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int max_pkt_size;
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/* number of allocated urbs */
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int num_bufs;
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/* urb for isoc transfers */
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struct urb **urb;
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/* transfer buffers for isoc transfer */
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char **transfer_buffer;
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/* Last buffer command and region */
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u8 cmd;
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int pos, size, pktsize;
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/* Last field: ODD or EVEN? */
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int field;
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/* Stores incomplete commands */
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u32 tmp_buf;
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int tmp_buf_len;
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/* Stores already requested buffers */
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struct au0828_buffer *buf;
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/* Stores the number of received fields */
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int nfields;
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/* isoc urb callback */
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int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
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};
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/* buffer for one video frame */
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struct au0828_buffer {
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/* common v4l buffer stuff -- must be first */
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struct videobuf_buffer vb;
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struct list_head frame;
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int top_field;
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int receiving;
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};
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struct au0828_dmaqueue {
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struct list_head active;
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struct list_head queued;
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wait_queue_head_t wq;
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/* Counters to control buffer fill */
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int pos;
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};
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struct au0828_dev {
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struct mutex mutex;
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struct usb_device *usbdev;
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int boardnr;
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struct au0828_board board;
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u8 ctrlmsg[64];
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/* I2C */
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struct i2c_adapter i2c_adap;
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struct i2c_algorithm i2c_algo;
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struct i2c_client i2c_client;
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u32 i2c_rc;
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/* Digital */
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struct au0828_dvb dvb;
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/* Analog */
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struct list_head au0828list;
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struct v4l2_device v4l2_dev;
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int users;
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unsigned int stream_on:1; /* Locks streams */
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struct video_device *vdev;
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struct video_device *vbi_dev;
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int width;
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int height;
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u32 field_size;
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u32 frame_size;
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u32 bytesperline;
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int type;
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u8 ctrl_ainput;
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__u8 isoc_in_endpointaddr;
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u8 isoc_init_ok;
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int greenscreen_detected;
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unsigned int frame_count;
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int ctrl_freq;
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int input_type;
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unsigned int ctrl_input;
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enum au0828_dev_state dev_state;
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enum au0828_stream_state stream_state;
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wait_queue_head_t open;
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struct mutex lock;
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/* Isoc control struct */
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struct au0828_dmaqueue vidq;
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struct au0828_usb_isoc_ctl isoc_ctl;
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spinlock_t slock;
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/* usb transfer */
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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[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */
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char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
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transfer */
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/* USB / URB Related */
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int urb_streaming;
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struct urb *urbs[URB_COUNT];
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};
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/* ----------------------------------------------------------- */
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#define au0828_read(dev, reg) au0828_readreg(dev, reg)
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#define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
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#define au0828_andor(dev, reg, mask, value) \
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au0828_writereg(dev, reg, \
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(au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
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#define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
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#define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
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/* ----------------------------------------------------------- */
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/* au0828-core.c */
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extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
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extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
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extern int au0828_debug;
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/* ----------------------------------------------------------- */
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/* au0828-cards.c */
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extern struct au0828_board au0828_boards[];
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extern struct usb_device_id au0828_usb_id_table[];
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extern void au0828_gpio_setup(struct au0828_dev *dev);
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extern int au0828_tuner_callback(void *priv, int component,
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int command, int arg);
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extern void au0828_card_setup(struct au0828_dev *dev);
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/* ----------------------------------------------------------- */
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/* au0828-i2c.c */
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extern int au0828_i2c_register(struct au0828_dev *dev);
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extern int au0828_i2c_unregister(struct au0828_dev *dev);
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/* ----------------------------------------------------------- */
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/* au0828-video.c */
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int au0828_analog_register(struct au0828_dev *dev,
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struct usb_interface *interface);
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int au0828_analog_stream_disable(struct au0828_dev *d);
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void au0828_analog_unregister(struct au0828_dev *dev);
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/* ----------------------------------------------------------- */
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/* au0828-dvb.c */
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extern int au0828_dvb_register(struct au0828_dev *dev);
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extern void au0828_dvb_unregister(struct au0828_dev *dev);
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#define dprintk(level, fmt, arg...)\
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do { if (au0828_debug & level)\
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printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\
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} while (0)
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