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android_kernel_xiaomi_sm8350/drivers/media/video/em28xx/em28xx.h
Adrian Bunk adcb0fa250 V4L/DVB (3963): Em28xx/: possible cleanups 
This patch contains the following possible cleanups:
- make the following needlessly global functions static:
  - em28xx-core.c: em28xx_accumulator_set()
  - em28xx-core.c: em28xx_capture_area_set()
  - em28xx-core.c: em28xx_scaler_set()
  - em28xx-core.c: em28xx_isocIrq()
- remove the following unused EXPORT_SYMBOL's:
  - em28xx-cards.c: em28xx_boards
  - em28xx-cards.c: em28xx_bcount
  - em28xx-cards.c: em28xx_id_table

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-06-25 01:59:53 -03:00

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/*
em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices
Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
Ludovico Cavedon <cavedon@sssup.it>
Mauro Carvalho Chehab <mchehab@infradead.org>
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 _EM28XX_H
#define _EM28XX_H
#include <linux/videodev.h>
#include <linux/i2c.h>
#include <linux/mutex.h>
#include <media/ir-kbd-i2c.h>
/* Boards supported by driver */
#define EM2800_BOARD_UNKNOWN 0
#define EM2820_BOARD_UNKNOWN 1
#define EM2820_BOARD_TERRATEC_CINERGY_250 2
#define EM2820_BOARD_PINNACLE_USB_2 3
#define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 4
#define EM2820_BOARD_MSI_VOX_USB_2 5
#define EM2800_BOARD_TERRATEC_CINERGY_200 6
#define EM2800_BOARD_LEADTEK_WINFAST_USBII 7
#define EM2800_BOARD_KWORLD_USB2800 8
#define EM2820_BOARD_PINNACLE_DVC_90 9
#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 10
#define EM2880_BOARD_TERRATEC_HYBRID_XS 11
#define EM2820_BOARD_KWORLD_PVRTV2800RF 12
#define EM2880_BOARD_TERRATEC_PRODIGY_XS 13
#define UNSET -1
/* maximum number of em28xx boards */
#define EM28XX_MAXBOARDS 1 /*FIXME: should be bigger */
/* maximum number of frames that can be queued */
#define EM28XX_NUM_FRAMES 5
/* number of frames that get used for v4l2_read() */
#define EM28XX_NUM_READ_FRAMES 2
/* number of buffers for isoc transfers */
#define EM28XX_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 EM28XX_NUM_PACKETS 40
/* default alternate; 0 means choose the best */
#define EM28XX_PINOUT 0
#define EM28XX_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 EM28XX_URB_TIMEOUT msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
/* time in msecs to wait for i2c writes to finish */
#define EM2800_I2C_WRITE_TIMEOUT 20
/* the various frame states */
enum em28xx_frame_state {
F_UNUSED = 0,
F_QUEUED,
F_GRABBING,
F_DONE,
F_ERROR,
};
/* stream states */
enum em28xx_stream_state {
STREAM_OFF,
STREAM_INTERRUPT,
STREAM_ON,
};
/* frames */
struct em28xx_frame_t {
void *bufmem;
struct v4l2_buffer buf;
enum em28xx_frame_state state;
struct list_head frame;
unsigned long vma_use_count;
int top_field;
int fieldbytesused;
};
/* io methods */
enum em28xx_io_method {
IO_NONE,
IO_READ,
IO_MMAP,
};
/* inputs */
#define MAX_EM28XX_INPUT 4
enum enum28xx_itype {
EM28XX_VMUX_COMPOSITE1 = 1,
EM28XX_VMUX_COMPOSITE2,
EM28XX_VMUX_COMPOSITE3,
EM28XX_VMUX_COMPOSITE4,
EM28XX_VMUX_SVIDEO,
EM28XX_VMUX_TELEVISION,
EM28XX_VMUX_CABLE,
EM28XX_VMUX_DVB,
EM28XX_VMUX_DEBUG,
EM28XX_RADIO,
};
struct em28xx_input {
enum enum28xx_itype type;
unsigned int vmux;
unsigned int amux;
};
#define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
enum em28xx_decoder {
EM28XX_TVP5150,
EM28XX_SAA7113,
EM28XX_SAA7114
};
struct em28xx_board {
char *name;
int vchannels;
int norm;
int tuner_type;
/* i2c flags */
unsigned int is_em2800;
unsigned int tda9887_conf;
unsigned int has_tuner:1;
unsigned int has_msp34xx:1;
enum em28xx_decoder decoder;
struct em28xx_input input[MAX_EM28XX_INPUT];
};
struct em28xx_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 em28xx_dev_state {
DEV_INITIALIZED = 0x01,
DEV_DISCONNECTED = 0x02,
DEV_MISCONFIGURED = 0x04,
};
/* tvnorms */
struct em28xx_tvnorm {
char *name;
v4l2_std_id id;
/* mode for saa7113h */
int mode;
};
/* main device struct */
struct em28xx {
/* generic device properties */
char name[30]; /* name (including minor) of the device */
int model; /* index in the device_data struct */
int devno; /* marks the number of this device */
unsigned int is_em2800;
int video_inputs; /* number of video inputs */
struct list_head devlist;
unsigned int has_tuner:1;
unsigned int has_msp34xx:1;
unsigned int has_tda9887:1;
u32 i2s_speed; /* I2S speed for audio digital stream */
enum em28xx_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 em28xx_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 em28xx_frame_t frame[EM28XX_NUM_FRAMES]; /* list of frames */
int num_frames; /* number of frames currently in use */
unsigned int frame_count; /* total number of transfered frames */
struct em28xx_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 em28xx_dev_state state;
enum em28xx_stream_state stream;
enum em28xx_io_method io;
/* locks */
struct mutex 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 */
int num_alt; /* Number of alternative settings */
unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */
char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc transfer */
/* helper funcs that call usb_control_msg */
int (*em28xx_write_regs) (struct em28xx * dev, u16 reg, char *buf,
int len);
int (*em28xx_read_reg) (struct em28xx * dev, u16 reg);
int (*em28xx_read_reg_req_len) (struct em28xx * dev, u8 req, u16 reg,
char *buf, int len);
int (*em28xx_write_regs_req) (struct em28xx * dev, u8 req, u16 reg,
char *buf, int len);
int (*em28xx_read_reg_req) (struct em28xx * dev, u8 req, u16 reg);
};
/* Provided by em28xx-i2c.c */
void em28xx_i2c_call_clients(struct em28xx *dev, unsigned int cmd, void *arg);
int em28xx_i2c_register(struct em28xx *dev);
int em28xx_i2c_unregister(struct em28xx *dev);
/* Provided by em28xx-input.c */
void em28xx_set_ir(struct em28xx * dev,struct IR_i2c *ir);
/* Provided by em28xx-core.c */
u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
void em28xx_queue_unusedframes(struct em28xx *dev);
void em28xx_release_buffers(struct em28xx *dev);
int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
char *buf, int len);
int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
int em28xx_read_reg(struct em28xx *dev, u16 reg);
int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
int len);
int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
u8 bitmask);
int em28xx_write_ac97(struct em28xx *dev, u8 reg, u8 * val);
int em28xx_audio_analog_set(struct em28xx *dev);
int em28xx_colorlevels_set_default(struct em28xx *dev);
int em28xx_capture_start(struct em28xx *dev, int start);
int em28xx_outfmt_set_yuv422(struct em28xx *dev);
int em28xx_resolution_set(struct em28xx *dev);
int em28xx_init_isoc(struct em28xx *dev);
void em28xx_uninit_isoc(struct em28xx *dev);
int em28xx_set_alternate(struct em28xx *dev);
/* Provided by em28xx-cards.c */
extern int em2800_variant_detect(struct usb_device* udev,int model);
extern void em28xx_pre_card_setup(struct em28xx *dev);
extern void em28xx_card_setup(struct em28xx *dev);
extern struct em28xx_board em28xx_boards[];
extern struct usb_device_id em28xx_id_table[];
extern const unsigned int em28xx_bcount;
/* em28xx registers */
#define CHIPID_REG 0x0a
#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 EM28XX_AUDIO_SRC_TUNER 0xc0
#define EM28XX_AUDIO_SRC_LINE 0x80
/* printk macros */
#define em28xx_err(fmt, arg...) do {\
printk(KERN_ERR fmt , ##arg); } while (0)
#define em28xx_errdev(fmt, arg...) do {\
printk(KERN_ERR "%s: "fmt,\
dev->name , ##arg); } while (0)
#define em28xx_info(fmt, arg...) do {\
printk(KERN_INFO "%s: "fmt,\
dev->name , ##arg); } while (0)
#define em28xx_warn(fmt, arg...) do {\
printk(KERN_WARNING "%s: "fmt,\
dev->name , ##arg); } while (0)
inline static int em28xx_audio_source(struct em28xx *dev, int input)
{
return em28xx_write_reg_bits(dev, AUDIOSRC_REG, input, 0xc0);
}
inline static int em28xx_audio_usb_mute(struct em28xx *dev, int mute)
{
return em28xx_write_reg_bits(dev, XCLK_REG, mute ? 0x00 : 0x80, 0x80);
}
inline static int em28xx_audio_analog_setup(struct em28xx *dev)
{
/* unmute video mixer with default volume level */
return em28xx_write_ac97(dev, VIDEO_AC97, "\x08\x08");
}
inline static int em28xx_compression_disable(struct em28xx *dev)
{
/* side effect of disabling scaler and mixer */
return em28xx_write_regs(dev, COMPR_REG, "\x00", 1);
}
inline static int em28xx_contrast_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, YGAIN_REG) & 0x1f;
}
inline static int em28xx_brightness_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, YOFFSET_REG);
}
inline static int em28xx_saturation_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, UVGAIN_REG) & 0x1f;
}
inline static int em28xx_u_balance_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, UOFFSET_REG);
}
inline static int em28xx_v_balance_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, VOFFSET_REG);
}
inline static int em28xx_gamma_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, GAMMA_REG) & 0x3f;
}
inline static int em28xx_contrast_set(struct em28xx *dev, s32 val)
{
u8 tmp = (u8) val;
return em28xx_write_regs(dev, YGAIN_REG, &tmp, 1);
}
inline static int em28xx_brightness_set(struct em28xx *dev, s32 val)
{
u8 tmp = (u8) val;
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)
{
switch(dev->model){
case (EM2820_BOARD_MSI_VOX_USB_2): return(640);
default: return(720);
}
}
inline static unsigned int norm_maxh(struct em28xx *dev)
{
switch(dev->model){
case (EM2820_BOARD_MSI_VOX_USB_2): return(480);
default: return (dev->tvnorm->id & V4L2_STD_625_50) ? 576 : 480;
}
}
#endif
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