linux/drivers/media/usb/dvb-usb/dtt200u.h
Mauro Carvalho Chehab 577a7ad33a media: docs: move driver-specific info to driver-api
Those documents don't really describe the driver API.

Instead, they contain development-specific information.

Yet, as the main index file describes the content of it as:

	"how specific kernel subsystems work
	 from the point of view of a kernel developer"

It seems to be the better fit.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-04-14 10:36:18 +02:00

55 lines
1.4 KiB
C

/* SPDX-License-Identifier: GPL-2.0-only */
/* Common header file of Linux driver for the WideView/ Yakumo/ Hama/
* Typhoon/ Yuan DVB-T USB2.0 receiver.
*
* Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)
*
* see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
*/
#ifndef _DVB_USB_DTT200U_H_
#define _DVB_USB_DTT200U_H_
#define DVB_USB_LOG_PREFIX "dtt200u"
#include "dvb-usb.h"
extern int dvb_usb_dtt200u_debug;
#define deb_info(args...) dprintk(dvb_usb_dtt200u_debug,0x01,args)
#define deb_xfer(args...) dprintk(dvb_usb_dtt200u_debug,0x02,args)
/* guessed protocol description (reverse engineered):
* read
* 00 - USB type 0x02 for usb2.0, 0x01 for usb1.1
* 88 - locking 2 bytes (0x80 0x40 == no signal, 0x89 0x20 == nice signal)
*/
#define GET_SPEED 0x00
#define GET_TUNE_STATUS 0x81
#define GET_RC_CODE 0x84
#define GET_CONFIGURATION 0x88
#define GET_AGC 0x89
#define GET_SNR 0x8a
#define GET_VIT_ERR_CNT 0x8c
#define GET_RS_ERR_CNT 0x8d
#define GET_RS_UNCOR_BLK_CNT 0x8e
/* write
* 01 - init
* 02 - frequency (divided by 250000)
* 03 - bandwidth
* 04 - pid table (index pid(7:0) pid(12:8))
* 05 - reset the pid table
* 08 - transfer switch
*/
#define SET_INIT 0x01
#define SET_RF_FREQ 0x02
#define SET_BANDWIDTH 0x03
#define SET_PID_FILTER 0x04
#define RESET_PID_FILTER 0x05
#define SET_STREAMING 0x08
extern struct dvb_frontend * dtt200u_fe_attach(struct dvb_usb_device *d);
#endif