/* Frontend part of the Linux driver for the Afatech 9005
* USB1.1 DVB-T receiver.
*
* Copyright (C) 2007 Luca Olivetti (luca@ventoso.org)
*
* Thanks to Afatech who kindly provided information.
*
* 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.
*
* see Documentation/dvb/README.dvb-usb for more information
*/
#include "af9005.h"
#include "af9005-script.h"
#include "mt2060.h"
#include "qt1010.h"
#include <asm/div64.h>
struct af9005_fe_state {
struct dvb_usb_device *d;
fe_status_t stat;
/* retraining parameters */
u32 original_fcw;
u16 original_rf_top;
u16 original_if_top;
u16 original_if_min;
u16 original_aci0_if_top;
u16 original_aci1_if_top;
u16 original_aci0_if_min;
u8 original_if_unplug_th;
u8 original_rf_unplug_th;
u8 original_dtop_if_unplug_th;
u8 original_dtop_rf_unplug_th;
/* statistics */
u32 pre_vit_error_count;
u32 pre_vit_bit_count;
u32 ber;
u32 post_vit_error_count;
u32 post_vit_bit_count;
u32 unc;
u16 abort_count;
int opened;
int strong;
unsigned long next_status_check;
struct dvb_frontend frontend;
};
static int af9005_write_word_agc(struct dvb_usb_device *d, u16 reghi,
u16 reglo, u8 pos, u8 len, u16 value)
{
int ret;
if ((ret = af9005_write_ofdm_register(d, reglo, (u8) (value & 0xff))))
return ret;
return af9005_write_register_bits(d, reghi, pos, len,
(u8) ((value & 0x300) >> 8));
}
static int af9005_read_word_agc(struct dvb_usb_device *d, u16 reghi,
u16 reglo, u8 pos, u8 len, u16 * value)
{
int ret;
u8 temp0, temp1;
if ((ret = af9005_read_ofdm_register(d, reglo, &temp0)))
return ret;
if ((ret = af9005_read_ofdm_register(d, reghi, &temp1)))
return ret;
switch (pos) {
case 0:
*value = ((u16) (temp1 & 0x03) << 8) + (u16) temp0;
break;
case 2:
*value = ((u16) (temp1 & 0x0C) << 6) + (u16) temp0;
break;
case 4:
*value = ((u16) (temp1 & 0x30) << 4) + (u16) temp0;
break;
case 6:
*value = ((u16) (temp1 & 0xC0) << 2) + (u16) temp0;
break;
default:
err("invalid pos in read word agc");
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