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linux/drivers/media/usb/em28xx/em28xx.h
Mauro Carvalho Chehab 71db1cd7ff Linux 4.17-rc4 
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Merge tag 'v4.17-rc4' into patchwork

Linux 4.17-rc4

* tag 'v4.17-rc4': (920 commits)
  Linux 4.17-rc4
  KVM: x86: remove APIC Timer periodic/oneshot spikes
  genksyms: fix typo in parse.tab.{c,h} generation rules
  kbuild: replace hardcoded bison in cmd_bison_h with $(YACC)
  gcc-plugins: fix build condition of SANCOV plugin
  MAINTAINERS: Update Kbuild entry with a few paths
  Revert "usb: host: ehci: Use dma_pool_zalloc()"
  platform/x86: Kconfig: Fix dell-laptop dependency chain.
  platform/x86: asus-wireless: Fix NULL pointer dereference
  arm64: vgic-v2: Fix proxying of cpuif access
  KVM: arm/arm64: vgic_init: Cleanup reference to process_maintenance
  KVM: arm64: Fix order of vcpu_write_sys_reg() arguments
  MAINTAINERS & files: Canonize the e-mails I use at files
  media: imx-media-csi: Fix inconsistent IS_ERR and PTR_ERR
  tools: power/acpi, revert to LD = gcc
  bdi: Fix oops in wb_workfn()
  RDMA/cma: Do not query GID during QP state transition to RTR
  IB/mlx4: Fix integer overflow when calculating optimal MTT size
  IB/hfi1: Fix memory leak in exception path in get_irq_affinity()
  IB/{hfi1, rdmavt}: Fix memory leak in hfi1_alloc_devdata() upon failure
  ...
2018-05-10 07:19:23 -04:00

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* 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@kernel.org>
* Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
*
* 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.
*/
#ifndef _EM28XX_H
#define _EM28XX_H
#include <linux/bitfield.h>
#define EM28XX_VERSION "0.2.2"
#define DRIVER_DESC "Empia em28xx device driver"
#include <linux/workqueue.h>
#include <linux/i2c.h>
#include <linux/mutex.h>
#include <linux/kref.h>
#include <linux/videodev2.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-vmalloc.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
#include <media/i2c/ir-kbd-i2c.h>
#include <media/rc-core.h>
#include "tuner-xc2028.h"
#include "xc5000.h"
#include "em28xx-reg.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 EM2820_BOARD_PROLINK_PLAYTV_USB2 14
#define EM2800_BOARD_VGEAR_POCKETTV 15
#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950 16
#define EM2880_BOARD_PINNACLE_PCTV_HD_PRO 17
#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
#define EM2860_BOARD_SAA711X_REFERENCE_DESIGN 19
#define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600 20
#define EM2800_BOARD_GRABBEEX_USB2800 21
#define EM2750_BOARD_UNKNOWN 22
#define EM2750_BOARD_DLCW_130 23
#define EM2820_BOARD_DLINK_USB_TV 24
#define EM2820_BOARD_GADMEI_UTV310 25
#define EM2820_BOARD_HERCULES_SMART_TV_USB2 26
#define EM2820_BOARD_PINNACLE_USB_2_FM1216ME 27
#define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
#define EM2860_BOARD_TVP5150_REFERENCE_DESIGN 29
#define EM2820_BOARD_VIDEOLOGY_20K14XUSB 30
#define EM2821_BOARD_USBGEAR_VD204 31
#define EM2821_BOARD_SUPERCOMP_USB_2 32
#define EM2860_BOARD_ELGATO_VIDEO_CAPTURE 33
#define EM2860_BOARD_TERRATEC_HYBRID_XS 34
#define EM2860_BOARD_TYPHOON_DVD_MAKER 35
#define EM2860_BOARD_NETGMBH_CAM 36
#define EM2860_BOARD_GADMEI_UTV330 37
#define EM2861_BOARD_YAKUMO_MOVIE_MIXER 38
#define EM2861_BOARD_KWORLD_PVRTV_300U 39
#define EM2861_BOARD_PLEXTOR_PX_TV100U 40
#define EM2870_BOARD_KWORLD_350U 41
#define EM2870_BOARD_KWORLD_355U 42
#define EM2870_BOARD_TERRATEC_XS 43
#define EM2870_BOARD_TERRATEC_XS_MT2060 44
#define EM2870_BOARD_PINNACLE_PCTV_DVB 45
#define EM2870_BOARD_COMPRO_VIDEOMATE 46
#define EM2880_BOARD_KWORLD_DVB_305U 47
#define EM2880_BOARD_KWORLD_DVB_310U 48
#define EM2880_BOARD_MSI_DIGIVOX_AD 49
#define EM2880_BOARD_MSI_DIGIVOX_AD_II 50
#define EM2880_BOARD_TERRATEC_HYBRID_XS_FR 51
#define EM2881_BOARD_DNT_DA2_HYBRID 52
#define EM2881_BOARD_PINNACLE_HYBRID_PRO 53
#define EM2882_BOARD_KWORLD_VS_DVBT 54
#define EM2882_BOARD_TERRATEC_HYBRID_XS 55
#define EM2882_BOARD_PINNACLE_HYBRID_PRO_330E 56
#define EM2883_BOARD_KWORLD_HYBRID_330U 57
#define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU 58
#define EM2874_BOARD_PCTV_HD_MINI_80E 59
#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850 60
#define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2 61
#define EM2820_BOARD_GADMEI_TVR200 62
#define EM2860_BOARD_KAIOMY_TVNPC_U2 63
#define EM2860_BOARD_EASYCAP 64
#define EM2820_BOARD_IODATA_GVMVP_SZ 65
#define EM2880_BOARD_EMPIRE_DUAL_TV 66
#define EM2860_BOARD_TERRATEC_GRABBY 67
#define EM2860_BOARD_TERRATEC_AV350 68
#define EM2882_BOARD_KWORLD_ATSC_315U 69
#define EM2882_BOARD_EVGA_INDTUBE 70
#define EM2820_BOARD_SILVERCREST_WEBCAM 71
#define EM2861_BOARD_GADMEI_UTV330PLUS 72
#define EM2870_BOARD_REDDO_DVB_C_USB_BOX 73
#define EM2800_BOARD_VC211A 74
#define EM2882_BOARD_DIKOM_DK300 75
#define EM2870_BOARD_KWORLD_A340 76
#define EM2874_BOARD_LEADERSHIP_ISDBT 77
#define EM28174_BOARD_PCTV_290E 78
#define EM2884_BOARD_TERRATEC_H5 79
#define EM28174_BOARD_PCTV_460E 80
#define EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C 81
#define EM2884_BOARD_CINERGY_HTC_STICK 82
#define EM2860_BOARD_HT_VIDBOX_NW03 83
#define EM2874_BOARD_MAXMEDIA_UB425_TC 84
#define EM2884_BOARD_PCTV_510E 85
#define EM2884_BOARD_PCTV_520E 86
#define EM2884_BOARD_TERRATEC_HTC_USB_XS 87
#define EM2884_BOARD_C3TECH_DIGITAL_DUO 88
#define EM2874_BOARD_DELOCK_61959 89
#define EM2874_BOARD_KWORLD_UB435Q_V2 90
#define EM2765_BOARD_SPEEDLINK_VAD_LAPLACE 91
#define EM28178_BOARD_PCTV_461E 92
#define EM2874_BOARD_KWORLD_UB435Q_V3 93
#define EM28178_BOARD_PCTV_292E 94
#define EM2861_BOARD_LEADTEK_VC100 95
#define EM28178_BOARD_TERRATEC_T2_STICK_HD 96
#define EM2884_BOARD_ELGATO_EYETV_HYBRID_2008 97
#define EM28178_BOARD_PLEX_PX_BCUD 98
#define EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_DVB 99
#define EM28174_BOARD_HAUPPAUGE_WINTV_DUALHD_01595 100
#define EM2884_BOARD_TERRATEC_H6 101
#define EM2882_BOARD_ZOLID_HYBRID_TV_STICK 102
/* Limits minimum and default number of buffers */
#define EM28XX_MIN_BUF 4
#define EM28XX_DEF_BUF 8
/*Limits the max URB message size */
#define URB_MAX_CTRL_SIZE 80
/* Params for validated field */
#define EM28XX_BOARD_NOT_VALIDATED 1
#define EM28XX_BOARD_VALIDATED 0
/* Params for em28xx_cmd() audio */
#define EM28XX_START_AUDIO 1
#define EM28XX_STOP_AUDIO 0
/* maximum number of em28xx boards */
#define EM28XX_MAXBOARDS DVB_MAX_ADAPTERS /* All adapters could be em28xx */
/* 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
#define EM28XX_DVB_NUM_BUFS 5
/* max number of I2C buses on em28xx devices */
#define NUM_I2C_BUSES 2
/*
* isoc transfers: number of packets for each buffer
* windows requests only 64 packets .. so we better do the same
* this is what I found out for all alternate numbers there!
*/
#define EM28XX_NUM_ISOC_PACKETS 64
#define EM28XX_DVB_NUM_ISOC_PACKETS 64
/*
* bulk transfers: transfer buffer size = packet size * packet multiplier
* USB 2.0 spec says bulk packet size is always 512 bytes
*/
#define EM28XX_BULK_PACKET_MULTIPLIER 384
#define EM28XX_DVB_BULK_PACKET_MULTIPLIER 94
#define EM28XX_INTERLACED_DEFAULT 1
/* time in msecs to wait for AC97 xfers to finish */
#define EM28XX_AC97_XFER_TIMEOUT 100
/* max. number of button state polling addresses */
#define EM28XX_NUM_BUTTON_ADDRESSES_MAX 5
#define PRIMARY_TS 0
#define SECONDARY_TS 1
enum em28xx_mode {
EM28XX_SUSPEND,
EM28XX_ANALOG_MODE,
EM28XX_DIGITAL_MODE,
};
struct em28xx;
/**
* struct em28xx_usb_bufs - Contains URB-related buffer data
*
* @max_pkt_size: max packet size of isoc transaction
* @num_packets: number of packets in each buffer
* @num_bufs: number of allocated urb
* @urb: urb for isoc/bulk transfers
* @buf: transfer buffers for isoc/bulk transfer
*/
struct em28xx_usb_bufs {
int max_pkt_size;
int num_packets;
int num_bufs;
struct urb **urb;
char **buf;
};
/**
* struct em28xx_usb_ctl - Contains URB-related buffer data
*
* @analog_bufs: isoc/bulk transfer buffers for analog mode
* @digital_bufs: isoc/bulk transfer buffers for digital mode
* @vid_buf: Stores already requested video buffers
* @vbi_buf: Stores already requested VBI buffers
* @urb_data_copy: copy data from URB
*/
struct em28xx_usb_ctl {
struct em28xx_usb_bufs analog_bufs;
struct em28xx_usb_bufs digital_bufs;
struct em28xx_buffer *vid_buf;
struct em28xx_buffer *vbi_buf;
int (*urb_data_copy)(struct em28xx *dev, struct urb *urb);
};
/**
* struct em28xx_fmt - Struct to enumberate video formats
*
* @name: Name for the video standard
* @fourcc: v4l2 format id
* @depth: mean number of bits to represent a pixel
* @reg: em28xx register value to set it
*/
struct em28xx_fmt {
char *name;
u32 fourcc;
int depth;
int reg;
};
/**
* struct em28xx_buffer- buffer for storing one video frame
*
* @vb: common v4l buffer stuff
* @list: List to associate it with the other buffers
* @mem: pointer to the buffer, as returned by vb2_plane_vaddr()
* @length: length of the buffer, as returned by vb2_plane_size()
* @top_field: If non-zero, indicate that the buffer is the top field
* @pos: Indicate the next position of the buffer to be filled.
* @vb_buf: pointer to vmalloc memory address in vb
*
* .. note::
*
* in interlaced mode, @pos is reset to zero at the start of each new
* field (not frame !)
*/
struct em28xx_buffer {
struct vb2_v4l2_buffer vb; /* must be first */
struct list_head list;
void *mem;
unsigned int length;
int top_field;
unsigned int pos;
char *vb_buf;
};
struct em28xx_dmaqueue {
struct list_head active;
wait_queue_head_t wq;
};
/* inputs */
#define MAX_EM28XX_INPUT 4
enum enum28xx_itype {
EM28XX_VMUX_COMPOSITE = 1,
EM28XX_VMUX_SVIDEO,
EM28XX_VMUX_TELEVISION,
EM28XX_RADIO,
};
enum em28xx_ac97_mode {
EM28XX_NO_AC97 = 0,
EM28XX_AC97_EM202,
EM28XX_AC97_SIGMATEL,
EM28XX_AC97_OTHER,
};
struct em28xx_audio_mode {
enum em28xx_ac97_mode ac97;
};
enum em28xx_int_audio_type {
EM28XX_INT_AUDIO_NONE = 0,
EM28XX_INT_AUDIO_AC97,
EM28XX_INT_AUDIO_I2S,
};
enum em28xx_usb_audio_type {
EM28XX_USB_AUDIO_NONE = 0,
EM28XX_USB_AUDIO_CLASS,
EM28XX_USB_AUDIO_VENDOR,
};
/**
* em28xx_amux - describes the type of audio input used by em28xx
*
* @EM28XX_AMUX_VIDEO:
* On devices without AC97, this is the only value that it is currently
* allowed.
* On devices with AC97, it corresponds to the AC97 mixer "Video" control.
* @EM28XX_AMUX_LINE_IN:
* Only for devices with AC97. Corresponds to AC97 mixer "Line In".
* @EM28XX_AMUX_VIDEO2:
* Only for devices with AC97. It means that em28xx should use "Line In"
* And AC97 should use the "Video" mixer control.
* @EM28XX_AMUX_PHONE:
* Only for devices with AC97. Corresponds to AC97 mixer "Phone".
* @EM28XX_AMUX_MIC:
* Only for devices with AC97. Corresponds to AC97 mixer "Mic".
* @EM28XX_AMUX_CD:
* Only for devices with AC97. Corresponds to AC97 mixer "CD".
* @EM28XX_AMUX_AUX:
* Only for devices with AC97. Corresponds to AC97 mixer "Aux".
* @EM28XX_AMUX_PCM_OUT:
* Only for devices with AC97. Corresponds to AC97 mixer "PCM out".
*
* The em28xx chip itself has only two audio inputs: tuner and line in.
* On almost all devices, only the tuner input is used.
*
* However, on most devices, an auxiliary AC97 codec device is used,
* usually connected to the em28xx tuner input (except for
* @EM28XX_AMUX_LINE_IN).
*
* The AC97 device typically have several different inputs and outputs.
* The exact number and description depends on their model.
*
* It is possible to AC97 to mixer more than one different entries at the
* same time, via the alsa mux.
*/
enum em28xx_amux {
EM28XX_AMUX_VIDEO,
EM28XX_AMUX_LINE_IN,
/* Some less-common mixer setups */
EM28XX_AMUX_VIDEO2,
EM28XX_AMUX_PHONE,
EM28XX_AMUX_MIC,
EM28XX_AMUX_CD,
EM28XX_AMUX_AUX,
EM28XX_AMUX_PCM_OUT,
};
enum em28xx_aout {
/* AC97 outputs */
EM28XX_AOUT_MASTER = BIT(0),
EM28XX_AOUT_LINE = BIT(1),
EM28XX_AOUT_MONO = BIT(2),
EM28XX_AOUT_LFE = BIT(3),
EM28XX_AOUT_SURR = BIT(4),
/* PCM IN Mixer - used by AC97_RECORD_SELECT register */
EM28XX_AOUT_PCM_IN = BIT(7),
/* Bits 10-8 are used to indicate the PCM IN record select */
EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
EM28XX_AOUT_PCM_CD = 1 << 8,
EM28XX_AOUT_PCM_VIDEO = 2 << 8,
EM28XX_AOUT_PCM_AUX = 3 << 8,
EM28XX_AOUT_PCM_LINE = 4 << 8,
EM28XX_AOUT_PCM_STEREO = 5 << 8,
EM28XX_AOUT_PCM_MONO = 6 << 8,
EM28XX_AOUT_PCM_PHONE = 7 << 8,
};
static inline int ac97_return_record_select(int a_out)
{
return (a_out & 0x700) >> 8;
}
struct em28xx_reg_seq {
int reg;
unsigned char val, mask;
int sleep;
};
struct em28xx_input {
enum enum28xx_itype type;
unsigned int vmux;
enum em28xx_amux amux;
enum em28xx_aout aout;
const struct em28xx_reg_seq *gpio;
};
#define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
enum em28xx_decoder {
EM28XX_NODECODER = 0,
EM28XX_TVP5150,
EM28XX_SAA711X,
};
enum em28xx_sensor {
EM28XX_NOSENSOR = 0,
EM28XX_MT9V011,
EM28XX_MT9M001,
EM28XX_MT9M111,
EM28XX_OV2640,
};
enum em28xx_adecoder {
EM28XX_NOADECODER = 0,
EM28XX_TVAUDIO,
};
enum em28xx_led_role {
EM28XX_LED_ANALOG_CAPTURING = 0,
EM28XX_LED_DIGITAL_CAPTURING,
EM28XX_LED_DIGITAL_CAPTURING_TS2,
EM28XX_LED_ILLUMINATION,
EM28XX_NUM_LED_ROLES, /* must be the last */
};
struct em28xx_led {
enum em28xx_led_role role;
u8 gpio_reg;
u8 gpio_mask;
bool inverted;
};
enum em28xx_button_role {
EM28XX_BUTTON_SNAPSHOT = 0,
EM28XX_BUTTON_ILLUMINATION,
EM28XX_NUM_BUTTON_ROLES, /* must be the last */
};
struct em28xx_button {
enum em28xx_button_role role;
u8 reg_r;
u8 reg_clearing;
u8 mask;
bool inverted;
};
struct em28xx_board {
char *name;
int vchannels;
int tuner_type;
int tuner_addr;
unsigned int def_i2c_bus; /* Default I2C bus */
/* i2c flags */
unsigned int tda9887_conf;
/* GPIO sequences */
const struct em28xx_reg_seq *dvb_gpio;
const struct em28xx_reg_seq *suspend_gpio;
const struct em28xx_reg_seq *tuner_gpio;
const struct em28xx_reg_seq *mute_gpio;
unsigned int is_em2800:1;
unsigned int has_msp34xx:1;
unsigned int mts_firmware:1;
unsigned int max_range_640_480:1;
unsigned int has_dvb:1;
unsigned int has_dual_ts:1;
unsigned int is_webcam:1;
unsigned int valid:1;
unsigned int has_ir_i2c:1;
unsigned char xclk, i2c_speed;
unsigned char radio_addr;
unsigned short tvaudio_addr;
enum em28xx_decoder decoder;
enum em28xx_adecoder adecoder;
struct em28xx_input input[MAX_EM28XX_INPUT];
struct em28xx_input radio;
char *ir_codes;
/* LEDs that need to be controlled explicitly */
struct em28xx_led *leds;
/* Buttons */
const struct em28xx_button *buttons;
};
struct em28xx_eeprom {
u8 id[4]; /* 1a eb 67 95 */
__le16 vendor_ID;
__le16 product_ID;
__le16 chip_conf;
__le16 board_conf;
__le16 string1, string2, string3;
u8 string_idx_table;
};
#define EM28XX_CAPTURE_STREAM_EN 1
/* em28xx extensions */
#define EM28XX_AUDIO 0x10
#define EM28XX_DVB 0x20
#define EM28XX_RC 0x30
#define EM28XX_V4L2 0x40
/* em28xx resource types (used for res_get/res_lock etc */
#define EM28XX_RESOURCE_VIDEO 0x01
#define EM28XX_RESOURCE_VBI 0x02
struct em28xx_v4l2 {
struct kref ref;
struct em28xx *dev;
struct v4l2_device v4l2_dev;
struct v4l2_ctrl_handler ctrl_handler;
struct video_device vdev;
struct video_device vbi_dev;
struct video_device radio_dev;
/* Videobuf2 */
struct vb2_queue vb_vidq;
struct vb2_queue vb_vbiq;
struct mutex vb_queue_lock; /* Protects vb_vidq */
struct mutex vb_vbi_queue_lock; /* Protects vb_vbiq */
u8 vinmode;
u8 vinctl;
/* Camera specific fields */
int sensor_xres;
int sensor_yres;
int sensor_xtal;
int users; /* user count for exclusive use */
int streaming_users; /* number of actively streaming users */
u32 frequency; /* selected tuner frequency */
struct em28xx_fmt *format;
v4l2_std_id norm; /* selected tv norm */
/* Progressive/interlaced mode */
bool progressive;
int interlaced_fieldmode; /* 1=interlaced fields, 0=just top fields */
/* FIXME: everything else than interlaced_fieldmode=1 doesn't work */
/* Frame properties */
int width; /* current frame width */
int height; /* current frame height */
unsigned int hscale; /* horizontal scale factor (see datasheet) */
unsigned int vscale; /* vertical scale factor (see datasheet) */
unsigned int vbi_width;
unsigned int vbi_height; /* lines per field */
/* Capture state tracking */
int capture_type;
bool top_field;
int vbi_read;
unsigned int field_count;
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_pad video_pad, vbi_pad;
struct media_entity *decoder;
#endif
};
struct em28xx_audio {
char name[50];
unsigned int num_urb;
char **transfer_buffer;
struct urb **urb;
struct usb_device *udev;
unsigned int capture_transfer_done;
struct snd_pcm_substream *capture_pcm_substream;
unsigned int hwptr_done_capture;
struct snd_card *sndcard;
size_t period;
int users;
spinlock_t slock; /* Protects struct em28xx_audio */
/* Controls streaming */
struct work_struct wq_trigger; /* trigger to start/stop audio */
atomic_t stream_started; /* stream should be running if true */
};
struct em28xx;
enum em28xx_i2c_algo_type {
EM28XX_I2C_ALGO_EM28XX = 0,
EM28XX_I2C_ALGO_EM2800,
EM28XX_I2C_ALGO_EM25XX_BUS_B,
};
struct em28xx_i2c_bus {
struct em28xx *dev;
unsigned int bus;
enum em28xx_i2c_algo_type algo_type;
};
/* main device struct */
struct em28xx {
struct kref ref;
// Sub-module data
struct em28xx_v4l2 *v4l2;
struct em28xx_dvb *dvb;
struct em28xx_audio adev;
struct em28xx_IR *ir;
// generic device properties
int model; // index in the device_data struct
int devno; // marks the number of this device
enum em28xx_chip_id chip_id;
unsigned int is_em25xx:1; // em25xx/em276x/7x/8x family bridge
unsigned int disconnected:1; // device has been diconnected
unsigned int has_video:1;
unsigned int is_audio_only:1;
unsigned int is_webcam:1;
unsigned int has_msp34xx:1;
unsigned int i2c_speed:2;
enum em28xx_int_audio_type int_audio_type;
enum em28xx_usb_audio_type usb_audio_type;
unsigned char name[32];
struct em28xx_board board;
enum em28xx_sensor em28xx_sensor; // camera specific
// Some older em28xx chips needs a waiting time after writing
unsigned int wait_after_write;
struct list_head devlist;
u32 i2s_speed; // I2S speed for audio digital stream
struct em28xx_audio_mode audio_mode;
int tuner_type; // type of the tuner
// i2c i/o
struct i2c_adapter i2c_adap[NUM_I2C_BUSES];
struct i2c_client i2c_client[NUM_I2C_BUSES];
struct em28xx_i2c_bus i2c_bus[NUM_I2C_BUSES];
unsigned char eeprom_addrwidth_16bit:1;
unsigned int def_i2c_bus; // Default I2C bus
unsigned int cur_i2c_bus; // Current I2C bus
struct rt_mutex i2c_bus_lock;
// video for linux
unsigned int ctl_input; // selected input
unsigned int ctl_ainput;// selected audio input
unsigned int ctl_aoutput;// selected audio output
int mute;
int volume;
unsigned long hash; // eeprom hash - for boards with generic ID
unsigned long i2c_hash; // i2c devicelist hash -
// for boards with generic ID
struct work_struct request_module_wk;
// locks
struct mutex lock; /* protects em28xx struct */
struct mutex ctrl_urb_lock; /* protects urb_buf */
// resources in use
unsigned int resources;
// eeprom content
u8 *eedata;
u16 eedata_len;
// Isoc control struct
struct em28xx_dmaqueue vidq;
struct em28xx_dmaqueue vbiq;
struct em28xx_usb_ctl usb_ctl;
spinlock_t slock; /* Protects em28xx video/vbi/dvb IRQ stream data */
// usb transfer
struct usb_interface *intf; // the usb interface
u8 ifnum; // number of the assigned usb interface
u8 analog_ep_isoc; // address of isoc endpoint for analog
u8 analog_ep_bulk; // address of bulk endpoint for analog
u8 dvb_ep_isoc_ts2; // address of isoc endpoint for DVB TS2
u8 dvb_ep_bulk_ts2; // address of bulk endpoint for DVB TS2
u8 dvb_ep_isoc; // address of isoc endpoint for DVB
u8 dvb_ep_bulk; // address of bulk endpoint for DVB
int alt; // alternate setting
int max_pkt_size; // max packet size of the selected ep at alt
int packet_multiplier; // multiplier for wMaxPacketSize, used for
// URB buffer size definition
int num_alt; // number of alternative settings
unsigned int *alt_max_pkt_size_isoc; // array of isoc wMaxPacketSize
unsigned int analog_xfer_bulk:1; // use bulk instead of isoc
// transfers for analog
int dvb_alt_isoc; // alternate setting for DVB isoc transfers
unsigned int dvb_max_pkt_size_isoc; // isoc max packet size of the
// selected DVB ep at dvb_alt
unsigned int dvb_max_pkt_size_isoc_ts2; // isoc max packet size of the
// selected DVB ep at dvb_alt
unsigned int dvb_xfer_bulk:1; // use bulk instead of isoc
// transfers for DVB
char urb_buf[URB_MAX_CTRL_SIZE]; // urb control msg buffer
// 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);
enum em28xx_mode mode;
// Button state polling
struct delayed_work buttons_query_work;
u8 button_polling_addresses[EM28XX_NUM_BUTTON_ADDRESSES_MAX];
u8 button_polling_last_values[EM28XX_NUM_BUTTON_ADDRESSES_MAX];
u8 num_button_polling_addresses;
u16 button_polling_interval; // [ms]
// Snapshot button input device
char snapshot_button_path[30]; // path of the input dev
struct input_dev *sbutton_input_dev;
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device *media_dev;
struct media_entity input_ent[MAX_EM28XX_INPUT];
struct media_pad input_pad[MAX_EM28XX_INPUT];
#endif
struct em28xx *dev_next;
int ts;
};
#define kref_to_dev(d) container_of(d, struct em28xx, ref)
struct em28xx_ops {
struct list_head next;
char *name;
int id;
int (*init)(struct em28xx *dev);
int (*fini)(struct em28xx *dev);
int (*suspend)(struct em28xx *dev);
int (*resume)(struct em28xx *dev);
};
/* Provided by em28xx-i2c.c */
void em28xx_do_i2c_scan(struct em28xx *dev, unsigned int bus);
int em28xx_i2c_register(struct em28xx *dev, unsigned int bus,
enum em28xx_i2c_algo_type algo_type);
int em28xx_i2c_unregister(struct em28xx *dev, unsigned int bus);
/* Provided by em28xx-core.c */
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(struct em28xx *dev, u16 reg, u8 val);
int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
u8 bitmask);
int em28xx_toggle_reg_bits(struct em28xx *dev, u16 reg, u8 bitmask);
int em28xx_read_ac97(struct em28xx *dev, u8 reg);
int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
int em28xx_audio_analog_set(struct em28xx *dev);
int em28xx_audio_setup(struct em28xx *dev);
const struct em28xx_led *em28xx_find_led(struct em28xx *dev,
enum em28xx_led_role role);
int em28xx_capture_start(struct em28xx *dev, int start);
int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
int num_bufs, int max_pkt_size, int packet_multiplier);
int em28xx_init_usb_xfer(struct em28xx *dev, enum em28xx_mode mode,
int xfer_bulk,
int num_bufs, int max_pkt_size, int packet_multiplier,
int (*urb_data_copy)
(struct em28xx *dev, struct urb *urb));
void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode);
void em28xx_stop_urbs(struct em28xx *dev);
int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
int em28xx_gpio_set(struct em28xx *dev, const struct em28xx_reg_seq *gpio);
int em28xx_register_extension(struct em28xx_ops *dev);
void em28xx_unregister_extension(struct em28xx_ops *dev);
void em28xx_init_extension(struct em28xx *dev);
void em28xx_close_extension(struct em28xx *dev);
int em28xx_suspend_extension(struct em28xx *dev);
int em28xx_resume_extension(struct em28xx *dev);
/* Provided by em28xx-cards.c */
extern const struct em28xx_board em28xx_boards[];
extern struct usb_device_id em28xx_id_table[];
int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
void em28xx_setup_xc3028(struct em28xx *dev, struct xc2028_ctrl *ctl);
void em28xx_free_device(struct kref *ref);
/* Provided by em28xx-camera.c */
int em28xx_detect_sensor(struct em28xx *dev);
int em28xx_init_camera(struct em28xx *dev);
#endif
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