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android_kernel_xiaomi_sm8350/drivers/media/video/em28xx/em28xx.h
akpm@osdl.org a6c2ba2835 [PATCH] v4l: 716: support for em28xx board family 
- Added support for em28xx board family

Signed-off-by: Ludovico Cavedon <cavedon@sssup.it>
Signed-off-by: Markus Rechberger <mrechberger@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:56:15 -08:00

480 lines
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/*
em2820-cards.c - driver for Empia EM2820/2840 USB video capture devices
Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
Ludovico Cavedon <cavedon@sssup.it>
Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _EM2820_H
#define _EM2820_H
#include <linux/videodev.h>
#include <linux/i2c.h>
/* maximum number of frames that can be queued */
#define EM2820_NUM_FRAMES 5
/* number of frames that get used for v4l2_read() */
#define EM2820_NUM_READ_FRAMES 2
/* number of buffers for isoc transfers */
#define EM2820_NUM_BUFS 5
/* number of packets for each buffer */
// windows requests only 40 packets .. so we better do the same
// this is what I found out for all alternate numbers there!
#define EM2820_NUM_PACKETS 40
/* packet size for each packet */
/* no longer needed: read from endpoint descriptor */
//#define EM2820_MAX_PACKET_SIZE 3072 //7
//#define EM2820_MAX_PACKET_SIZE 2892 //6
//#define EM2820_MAX_PACKET_SIZE 2580 //5
//#define EM2820_MAX_PACKET_SIZE 1448 //2
/* default alternate; 0 means choose the best */
#define EM2820_PINOUT 0
#define EM2820_MAX_ALT 7
#define EM2820_INTERLACED_DEFAULT 1
/*
#define (use usbview if you want to get the other alternate number infos)
#define
#define alternate number 2
#define Endpoint Address: 82
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 1448
Interval: 125us
alternate number 7
Endpoint Address: 82
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 3072
Interval: 125us
*/
/* time to wait when stopping the isoc transfer */
#define EM2820_URB_TIMEOUT msecs_to_jiffies(EM2820_NUM_BUFS * EM2820_NUM_PACKETS)
/* the various frame states */
enum em2820_frame_state {
F_UNUSED = 0,
F_QUEUED,
F_GRABBING,
F_DONE,
F_ERROR,
};
/* stream states */
enum em2820_stream_state {
STREAM_OFF,
STREAM_INTERRUPT,
STREAM_ON,
};
/* frames */
struct em2820_frame_t {
void *bufmem;
struct v4l2_buffer buf;
enum em2820_frame_state state;
struct list_head frame;
unsigned long vma_use_count;
int top_field;
int fieldbytesused;
};
/* io methods */
enum em2820_io_method {
IO_NONE,
IO_READ,
IO_MMAP,
};
/* inputs */
#define MAX_EM2820_INPUT 4
enum enum2820_itype {
EM2820_VMUX_COMPOSITE1 = 1,
EM2820_VMUX_COMPOSITE2,
EM2820_VMUX_COMPOSITE3,
EM2820_VMUX_COMPOSITE4,
EM2820_VMUX_SVIDEO,
EM2820_VMUX_TELEVISION,
EM2820_VMUX_CABLE,
EM2820_VMUX_DVB,
EM2820_VMUX_DEBUG,
EM2820_RADIO,
};
struct em2820_input {
enum enum2820_itype type;
unsigned int vmux;
unsigned int amux;
};
#define INPUT(nr) (&em2820_boards[dev->model].input[nr])
enum em2820_decoder {
EM2820_TVP5150,
EM2820_SAA7113,
EM2820_SAA7114
};
struct em2820_board {
char *name;
int vchannels;
int norm;
int tuner_type;
/* i2c flags */
unsigned int tda9887_conf;
unsigned int has_tuner:1;
unsigned int has_msp34xx:1;
enum em2820_decoder decoder;
struct em2820_input input[MAX_EM2820_INPUT];
};
struct em2820_eeprom {
u32 id; /* 0x9567eb1a */
u16 vendor_ID;
u16 product_ID;
u16 chip_conf;
u16 board_conf;
u16 string1, string2, string3;
u8 string_idx_table;
};
/* device states */
enum em2820_dev_state {
DEV_INITIALIZED = 0x01,
DEV_DISCONNECTED = 0x02,
DEV_MISCONFIGURED = 0x04,
};
/* tvnorms */
struct em2820_tvnorm {
char *name;
v4l2_std_id id;
/* mode for saa7113h */
int mode;
};
/* main device struct */
struct em2820 {
/* generic device properties */
char name[30]; /* name (including minor) of the device */
int model; /* index in the device_data struct */
int video_inputs; /* number of video inputs */
unsigned int has_tuner:1;
unsigned int has_msp34xx:1;
unsigned int has_tda9887:1;
enum em2820_decoder decoder;
int tuner_type; /* type of the tuner */
int tuner_addr; /* tuner address */
int tda9887_conf;
/* i2c i/o */
struct i2c_adapter i2c_adap;
struct i2c_client i2c_client;
/* video for linux */
int users; /* user count for exclusive use */
struct video_device *vdev; /* video for linux device struct */
struct video_picture vpic; /* picture settings only used to init saa7113h */
struct em2820_tvnorm *tvnorm; /* selected tv norm */
int ctl_freq; /* selected frequency */
unsigned int ctl_input; /* selected input */
unsigned int ctl_ainput; /* slected audio input */
int mute;
int volume;
/* frame properties */
struct em2820_frame_t frame[EM2820_NUM_FRAMES]; /* list of frames */
int num_frames; /* number of frames currently in use */
unsigned int frame_count; /* total number of transfered frames */
struct em2820_frame_t *frame_current; /* the frame that is being filled */
int width; /* current frame width */
int height; /* current frame height */
int frame_size; /* current frame size */
int field_size; /* current field size */
int bytesperline;
int hscale; /* horizontal scale factor (see datasheet) */
int vscale; /* vertical scale factor (see datasheet) */
int interlaced; /* 1=interlace fileds, 0=just top fileds */
int type;
/* states */
enum em2820_dev_state state;
enum em2820_stream_state stream;
enum em2820_io_method io;
/* locks */
struct semaphore lock, fileop_lock;
spinlock_t queue_lock;
struct list_head inqueue, outqueue;
wait_queue_head_t open, wait_frame, wait_stream;
struct video_device *vbi_dev;
unsigned char eedata[256];
/* usb transfer */
struct usb_device *udev; /* the usb device */
int alt; /* alternate */
int max_pkt_size; /* max packet size of isoc transaction */
unsigned int alt_max_pkt_size[EM2820_MAX_ALT + 1]; /* array of wMaxPacketSize */
struct urb *urb[EM2820_NUM_BUFS]; /* urb for isoc transfers */
char *transfer_buffer[EM2820_NUM_BUFS]; /* transfer buffers for isoc transfer */
/* helper funcs that call usb_control_msg */
int (*em2820_write_regs) (struct em2820 * dev, u16 reg, char *buf,
int len);
int (*em2820_read_reg) (struct em2820 * dev, u16 reg);
int (*em2820_read_reg_req_len) (struct em2820 * dev, u8 req, u16 reg,
char *buf, int len);
int (*em2820_write_regs_req) (struct em2820 * dev, u8 req, u16 reg,
char *buf, int len);
int (*em2820_read_reg_req) (struct em2820 * dev, u8 req, u16 reg);
};
/* Provided by em2820-i2c.c */
void em2820_i2c_call_clients(struct em2820 *dev, unsigned int cmd, void *arg);
int em2820_i2c_register(struct em2820 *dev);
int em2820_i2c_unregister(struct em2820 *dev);
/* Provided by em2820-core.c */
void em2820_print_ioctl(char *name, unsigned int cmd);
u32 em2820_request_buffers(struct em2820 *dev, u32 count);
void em2820_queue_unusedframes(struct em2820 *dev);
void em2820_release_buffers(struct em2820 *dev);
int em2820_read_reg_req_len(struct em2820 *dev, u8 req, u16 reg,
char *buf, int len);
int em2820_read_reg_req(struct em2820 *dev, u8 req, u16 reg);
int em2820_read_reg(struct em2820 *dev, u16 reg);
int em2820_write_regs_req(struct em2820 *dev, u8 req, u16 reg, char *buf,
int len);
int em2820_write_regs(struct em2820 *dev, u16 reg, char *buf, int len);
int em2820_write_reg_bits(struct em2820 *dev, u16 reg, u8 val,
u8 bitmask);
int em2820_write_ac97(struct em2820 *dev, u8 reg, u8 * val);
int em2820_audio_analog_set(struct em2820 *dev);
int em2820_colorlevels_set_default(struct em2820 *dev);
int em2820_capture_start(struct em2820 *dev, int start);
int em2820_outfmt_set_yuv422(struct em2820 *dev);
int em2820_accumulator_set(struct em2820 *dev, u8 xmin, u8 xmax, u8 ymin,
u8 ymax);
int em2820_capture_area_set(struct em2820 *dev, u8 hstart, u8 vstart,
u16 width, u16 height);
int em2820_scaler_set(struct em2820 *dev, u16 h, u16 v);
int em2820_resolution_set(struct em2820 *dev);
void em2820_isocIrq(struct urb *urb, struct pt_regs *regs);
int em2820_init_isoc(struct em2820 *dev);
void em2820_uninit_isoc(struct em2820 *dev);
int em2820_set_alternate(struct em2820 *dev);
/* Provided by em2820-cards.c */
extern void em2820_card_setup(struct em2820 *dev);
extern struct em2820_board em2820_boards[];
extern struct usb_device_id em2820_id_table[];
/* em2820 registers */
#define USBSUSP_REG 0x0c /* */
#define AUDIOSRC_REG 0x0e
#define XCLK_REG 0x0f
#define VINMODE_REG 0x10
#define VINCTRL_REG 0x11
#define VINENABLE_REG 0x12 /* */
#define GAMMA_REG 0x14
#define RGAIN_REG 0x15
#define GGAIN_REG 0x16
#define BGAIN_REG 0x17
#define ROFFSET_REG 0x18
#define GOFFSET_REG 0x19
#define BOFFSET_REG 0x1a
#define OFLOW_REG 0x1b
#define HSTART_REG 0x1c
#define VSTART_REG 0x1d
#define CWIDTH_REG 0x1e
#define CHEIGHT_REG 0x1f
#define YGAIN_REG 0x20
#define YOFFSET_REG 0x21
#define UVGAIN_REG 0x22
#define UOFFSET_REG 0x23
#define VOFFSET_REG 0x24
#define SHARPNESS_REG 0x25
#define COMPR_REG 0x26
#define OUTFMT_REG 0x27
#define XMIN_REG 0x28
#define XMAX_REG 0x29
#define YMIN_REG 0x2a
#define YMAX_REG 0x2b
#define HSCALELOW_REG 0x30
#define HSCALEHIGH_REG 0x31
#define VSCALELOW_REG 0x32
#define VSCALEHIGH_REG 0x33
#define AC97LSB_REG 0x40
#define AC97MSB_REG 0x41
#define AC97ADDR_REG 0x42
#define AC97BUSY_REG 0x43
/* em202 registers */
#define MASTER_AC97 0x02
#define VIDEO_AC97 0x14
/* register settings */
#define EM2820_AUDIO_SRC_TUNER 0xc0
#define EM2820_AUDIO_SRC_LINE 0x80
/* printk macros */
#define em2820_err(fmt, arg...) do {\
printk(KERN_ERR fmt , ##arg); } while (0)
#define em2820_errdev(fmt, arg...) do {\
printk(KERN_ERR "%s: "fmt,\
dev->name , ##arg); } while (0)
#define em2820_info(fmt, arg...) do {\
printk(KERN_INFO "%s: "fmt,\
dev->name , ##arg); } while (0)
#define em2820_warn(fmt, arg...) do {\
printk(KERN_WARNING "%s: "fmt,\
dev->name , ##arg); } while (0)
inline static int em2820_audio_source(struct em2820 *dev, int input)
{
return em2820_write_reg_bits(dev, AUDIOSRC_REG, input, 0xc0);
}
inline static int em2820_audio_usb_mute(struct em2820 *dev, int mute)
{
return em2820_write_reg_bits(dev, XCLK_REG, mute ? 0x00 : 0x80, 0x80);
}
inline static int em2820_audio_analog_setup(struct em2820 *dev)
{
/* unmute video mixer with default volume level */
return em2820_write_ac97(dev, VIDEO_AC97, "\x08\x08");
}
inline static int em2820_compression_disable(struct em2820 *dev)
{
/* side effect of disabling scaler and mixer */
return em2820_write_regs(dev, COMPR_REG, "\x00", 1);
}
inline static int em2820_contrast_get(struct em2820 *dev)
{
return em2820_read_reg(dev, YGAIN_REG) & 0x1f;
}
inline static int em2820_brightness_get(struct em2820 *dev)
{
return em2820_read_reg(dev, YOFFSET_REG);
}
inline static int em2820_saturation_get(struct em2820 *dev)
{
return em2820_read_reg(dev, UVGAIN_REG) & 0x1f;
}
inline static int em2820_u_balance_get(struct em2820 *dev)
{
return em2820_read_reg(dev, UOFFSET_REG);
}
inline static int em2820_v_balance_get(struct em2820 *dev)
{
return em2820_read_reg(dev, VOFFSET_REG);
}
inline static int em2820_gamma_get(struct em2820 *dev)
{
return em2820_read_reg(dev, GAMMA_REG) & 0x3f;
}
inline static int em2820_contrast_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, YGAIN_REG, &tmp, 1);
}
inline static int em2820_brightness_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, YOFFSET_REG, &tmp, 1);
}
inline static int em2820_saturation_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, UVGAIN_REG, &tmp, 1);
}
inline static int em2820_u_balance_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, UOFFSET_REG, &tmp, 1);
}
inline static int em2820_v_balance_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, VOFFSET_REG, &tmp, 1);
}
inline static int em2820_gamma_set(struct em2820 *dev, s32 val)
{
u8 tmp = (u8) val;
return em2820_write_regs(dev, GAMMA_REG, &tmp, 1);
}
/*FIXME: maxw should be dependent of alt mode */
#define norm_maxw(dev) 720
inline static unsigned int norm_maxh(struct em2820 *dev)
{
return (dev->tvnorm->id & V4L2_STD_625_50) ? 576 : 480;
}
#endif
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