--- /dev/null
+/*
+ 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@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 _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_accumulator_set(struct em28xx *dev, u8 xmin, u8 xmax, u8 ymin,
+ u8 ymax);
+int em28xx_capture_area_set(struct em28xx *dev, u8 hstart, u8 vstart,
+ u16 width, u16 height);
+int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v);
+int em28xx_resolution_set(struct em28xx *dev);
+void em28xx_isocIrq(struct urb *urb, struct pt_regs *regs);
+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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