forked from Minki/linux
c1e13971b1
Patch from Ian Armstrong. I've encountered a couple of problems with the current af9015 driver as supplied with the 2.6.37 kernel, that the attached patch appears to fix. (I've generated this patch against the current v4l-dvb git). Some key-presses are lost. A key-press is only generated upon 'valid' data (buf[14] == (u8) ~buf[15]), but the buffer is wiped before this check. Sometimes the 15th byte has not been set at the time of read, so the data isn't valid & ignored. On the next poll the 15th byte has been set, but the rest of the data was wiped previously, so the data is still invalid & the key is lost. Weird repeat error, where an old key press is sometimes repeated in error. ie. button sequence '1 (pause) 2 (pause) 3 (pause) 4' generates output like '1 (pause) 2 (pause) 23 (pause) 4'. The current driver zeroes the data for the key pushed, but sometimes this data is already zero but with other bytes set suggesting a repeat code. This results in the last key being incorrectly repeated. This patch attempts to reduce the risk of a missed key-press & also stop the random repeat of an old key-press when a new key is pressed. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
126 lines
3.6 KiB
C
126 lines
3.6 KiB
C
/*
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* DVB USB Linux driver for Afatech AF9015 DVB-T USB2.0 receiver
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*
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* Copyright (C) 2007 Antti Palosaari <crope@iki.fi>
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*
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* Thanks to Afatech who kindly provided information.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef _DVB_USB_AF9015_H_
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#define _DVB_USB_AF9015_H_
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#define DVB_USB_LOG_PREFIX "af9015"
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#include "dvb-usb.h"
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#define deb_info(args...) dprintk(dvb_usb_af9015_debug, 0x01, args)
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#define deb_rc(args...) dprintk(dvb_usb_af9015_debug, 0x02, args)
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#define deb_xfer(args...) dprintk(dvb_usb_af9015_debug, 0x04, args)
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#define deb_reg(args...) dprintk(dvb_usb_af9015_debug, 0x08, args)
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#define deb_i2c(args...) dprintk(dvb_usb_af9015_debug, 0x10, args)
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#define deb_fw(args...) dprintk(dvb_usb_af9015_debug, 0x20, args)
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#define AF9015_I2C_EEPROM 0xa0
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#define AF9015_I2C_DEMOD 0x38
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#define AF9015_USB_TIMEOUT 2000
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/* EEPROM locations */
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#define AF9015_EEPROM_IR_MODE 0x18
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#define AF9015_EEPROM_IR_REMOTE_TYPE 0x34
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#define AF9015_EEPROM_TS_MODE 0x31
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#define AF9015_EEPROM_DEMOD2_I2C 0x32
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#define AF9015_EEPROM_SAW_BW1 0x35
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#define AF9015_EEPROM_XTAL_TYPE1 0x36
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#define AF9015_EEPROM_SPEC_INV1 0x37
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#define AF9015_EEPROM_IF1L 0x38
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#define AF9015_EEPROM_IF1H 0x39
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#define AF9015_EEPROM_MT2060_IF1L 0x3a
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#define AF9015_EEPROM_MT2060_IF1H 0x3b
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#define AF9015_EEPROM_TUNER_ID1 0x3c
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#define AF9015_EEPROM_SAW_BW2 0x45
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#define AF9015_EEPROM_XTAL_TYPE2 0x46
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#define AF9015_EEPROM_SPEC_INV2 0x47
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#define AF9015_EEPROM_IF2L 0x48
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#define AF9015_EEPROM_IF2H 0x49
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#define AF9015_EEPROM_MT2060_IF2L 0x4a
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#define AF9015_EEPROM_MT2060_IF2H 0x4b
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#define AF9015_EEPROM_TUNER_ID2 0x4c
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#define AF9015_EEPROM_OFFSET (AF9015_EEPROM_SAW_BW2 - AF9015_EEPROM_SAW_BW1)
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struct req_t {
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u8 cmd; /* [0] */
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/* seq */ /* [1] */
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u8 i2c_addr; /* [2] */
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u16 addr; /* [3|4] */
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u8 mbox; /* [5] */
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u8 addr_len; /* [6] */
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u8 data_len; /* [7] */
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u8 *data;
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};
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enum af9015_cmd {
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GET_CONFIG = 0x10,
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DOWNLOAD_FIRMWARE = 0x11,
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BOOT = 0x13,
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READ_MEMORY = 0x20,
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WRITE_MEMORY = 0x21,
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READ_WRITE_I2C = 0x22,
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COPY_FIRMWARE = 0x23,
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RECONNECT_USB = 0x5a,
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WRITE_VIRTUAL_MEMORY = 0x26,
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GET_IR_CODE = 0x27,
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READ_I2C,
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WRITE_I2C,
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};
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enum af9015_ir_mode {
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AF9015_IR_MODE_DISABLED = 0,
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AF9015_IR_MODE_HID,
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AF9015_IR_MODE_RLC,
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AF9015_IR_MODE_RC6,
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AF9015_IR_MODE_POLLING, /* just guess */
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};
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struct af9015_state {
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struct i2c_adapter i2c_adap; /* I2C adapter for 2nd FE */
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u8 rc_repeat;
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u32 rc_keycode;
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u8 rc_last[4];
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};
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struct af9015_config {
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u8 dual_mode:1;
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u16 mt2060_if1[2];
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u16 firmware_size;
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u16 firmware_checksum;
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u32 eeprom_sum;
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};
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enum af9015_remote {
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AF9015_REMOTE_NONE = 0,
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/* 1 */ AF9015_REMOTE_A_LINK_DTU_M,
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AF9015_REMOTE_MSI_DIGIVOX_MINI_II_V3,
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AF9015_REMOTE_MYGICTV_U718,
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AF9015_REMOTE_DIGITTRADE_DVB_T,
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/* 5 */ AF9015_REMOTE_AVERMEDIA_KS,
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};
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#endif
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