forked from Minki/linux
cc8c4f3a9c
Adjust MPEG initialization in cx24116 in order to accomodate different MPEG CLK position and polarity in different cards. Signed-off-by: Igor M. Liplianin <liplianin@me.by> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
979 lines
24 KiB
C
979 lines
24 KiB
C
/*
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Conexant cx24116/cx24118 - DVBS/S2 Satellite demod/tuner driver
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Copyright (C) 2006-2008 Steven Toth <stoth@hauppauge.com>
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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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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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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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* Updates by Darron Broad 2007.
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*
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* March
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* Fixed some bugs.
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* Added diseqc support.
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* Added corrected signal strength support.
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*
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* August
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* Sync with legacy version.
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* Some clean ups.
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*/
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/* Updates by Igor Liplianin
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*
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* September, 9th 2008
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* Fixed locking on high symbol rates (>30000).
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*/
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#include <linux/slab.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/firmware.h>
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#include "dvb_frontend.h"
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#include "cx24116.h"
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/*
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* Fetch firmware in the following manner.
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*
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* #!/bin/sh
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* wget ftp://167.206.143.11/outgoing/Oxford/88x_2_117_24275_1_INF.zip
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* unzip 88x_2_117_24275_1_INF.zip
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* dd if=Driver88/hcw88bda.sys of=dvb-fe-cx24116.fw skip=81768 bs=1 count=32522
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*/
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#define CX24116_DEFAULT_FIRMWARE "dvb-fe-cx24116.fw"
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#define CX24116_SEARCH_RANGE_KHZ 5000
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/* registers (TO BE COMPLETED) */
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#define CX24116_REG_SIGNAL (0xd5)
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/* arg buffer size */
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#define CX24116_ARGLEN (0x1e)
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/* arg offset for DiSEqC */
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#define CX24116_DISEQC_BURST (1)
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#define CX24116_DISEQC_ARG2_2 (2) /* unknown value=2 */
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#define CX24116_DISEQC_ARG3_0 (3) /* unknown value=0 */
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#define CX24116_DISEQC_ARG4_0 (4) /* unknown value=0 */
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#define CX24116_DISEQC_MSGLEN (5)
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#define CX24116_DISEQC_MSGOFS (6)
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/* DiSEqC burst */
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#define CX24116_DISEQC_MINI_A (0)
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#define CX24116_DISEQC_MINI_B (1)
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static int debug = 0;
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#define dprintk(args...) \
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do { \
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if (debug) printk ("cx24116: " args); \
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} while (0)
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enum cmds
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{
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CMD_INIT_CMD10 = 0x10,
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CMD_TUNEREQUEST = 0x11,
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CMD_INIT_CMD13 = 0x13,
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CMD_INIT_CMD14 = 0x14,
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CMD_SEND_DISEQC = 0x21,
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CMD_SET_TONEPRE = 0x22,
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CMD_SET_TONE = 0x23,
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};
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/* The Demod/Tuner can't easily provide these, we cache them */
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struct cx24116_tuning
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{
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u32 frequency;
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u32 symbol_rate;
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fe_spectral_inversion_t inversion;
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fe_code_rate_t fec;
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fe_modulation_t modulation;
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/* Demod values */
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u8 fec_val;
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u8 fec_mask;
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u8 inversion_val;
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};
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/* Basic commands that are sent to the firmware */
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struct cx24116_cmd
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{
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u8 len;
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u8 args[CX24116_ARGLEN];
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};
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struct cx24116_state
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{
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struct i2c_adapter* i2c;
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const struct cx24116_config* config;
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struct dvb_frontend frontend;
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struct cx24116_tuning dcur;
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struct cx24116_tuning dnxt;
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u8 skip_fw_load;
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u8 burst;
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};
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static int cx24116_writereg(struct cx24116_state* state, int reg, int data)
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{
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u8 buf[] = { reg, data };
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struct i2c_msg msg = { .addr = state->config->demod_address,
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.flags = 0, .buf = buf, .len = 2 };
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int err;
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if (debug>1)
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printk("cx24116: %s: write reg 0x%02x, value 0x%02x\n",
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__func__,reg, data);
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if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
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printk("%s: writereg error(err == %i, reg == 0x%02x,"
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" value == 0x%02x)\n", __func__, err, reg, data);
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return -EREMOTEIO;
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}
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return 0;
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}
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/* Bulk byte writes to a single I2C address, for 32k firmware load */
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static int cx24116_writeregN(struct cx24116_state* state, int reg, u8 *data, u16 len)
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{
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int ret = -EREMOTEIO;
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struct i2c_msg msg;
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u8 *buf;
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buf = kmalloc(len + 1, GFP_KERNEL);
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if (buf == NULL) {
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printk("Unable to kmalloc\n");
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ret = -ENOMEM;
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goto error;
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}
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*(buf) = reg;
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memcpy(buf + 1, data, len);
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msg.addr = state->config->demod_address;
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msg.flags = 0;
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msg.buf = buf;
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msg.len = len + 1;
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if (debug>1)
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printk("cx24116: %s: write regN 0x%02x, len = %d\n",
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__func__,reg, len);
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if ((ret = i2c_transfer(state->i2c, &msg, 1)) != 1) {
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printk("%s: writereg error(err == %i, reg == 0x%02x\n",
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__func__, ret, reg);
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ret = -EREMOTEIO;
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}
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error:
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kfree(buf);
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return ret;
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}
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static int cx24116_readreg(struct cx24116_state* state, u8 reg)
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{
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int ret;
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u8 b0[] = { reg };
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u8 b1[] = { 0 };
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struct i2c_msg msg[] = {
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{ .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 },
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{ .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 }
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};
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ret = i2c_transfer(state->i2c, msg, 2);
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if (ret != 2) {
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printk("%s: reg=0x%x (error=%d)\n", __func__, reg, ret);
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return ret;
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}
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if (debug>1)
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printk("cx24116: read reg 0x%02x, value 0x%02x\n",reg, b1[0]);
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return b1[0];
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}
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static int cx24116_set_inversion(struct cx24116_state* state, fe_spectral_inversion_t inversion)
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{
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dprintk("%s(%d)\n", __func__, inversion);
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switch (inversion) {
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case INVERSION_OFF:
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state->dnxt.inversion_val = 0x00;
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break;
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case INVERSION_ON:
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state->dnxt.inversion_val = 0x04;
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break;
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case INVERSION_AUTO:
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state->dnxt.inversion_val = 0x0C;
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break;
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default:
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return -EINVAL;
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}
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state->dnxt.inversion = inversion;
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return 0;
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}
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/* A table of modulation, fec and configuration bytes for the demod.
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* Not all S2 mmodulation schemes are support and not all rates with
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* a scheme are support. Especially, no auto detect when in S2 mode.
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*/
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struct cx24116_modfec {
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fe_modulation_t modulation;
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fe_code_rate_t fec;
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u8 mask; /* In DVBS mode this is used to autodetect */
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u8 val; /* Passed to the firmware to indicate mode selection */
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} CX24116_MODFEC_MODES[] = {
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/* QPSK. For unknown rates we set hardware to auto detect 0xfe 0x30 */
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{ QPSK, FEC_NONE, 0xfe, 0x30 },
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{ QPSK, FEC_1_2, 0x02, 0x2e },
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{ QPSK, FEC_2_3, 0x04, 0x2f },
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{ QPSK, FEC_3_4, 0x08, 0x30 },
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{ QPSK, FEC_4_5, 0xfe, 0x30 },
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{ QPSK, FEC_5_6, 0x20, 0x31 },
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{ QPSK, FEC_6_7, 0xfe, 0x30 },
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{ QPSK, FEC_7_8, 0x80, 0x32 },
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{ QPSK, FEC_8_9, 0xfe, 0x30 },
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{ QPSK, FEC_AUTO, 0xfe, 0x30 },
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/* NBC-QPSK */
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{ NBC_QPSK, FEC_1_2, 0x00, 0x04 },
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{ NBC_QPSK, FEC_3_5, 0x00, 0x05 },
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{ NBC_QPSK, FEC_2_3, 0x00, 0x06 },
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{ NBC_QPSK, FEC_3_4, 0x00, 0x07 },
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{ NBC_QPSK, FEC_4_5, 0x00, 0x08 },
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{ NBC_QPSK, FEC_5_6, 0x00, 0x09 },
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{ NBC_QPSK, FEC_8_9, 0x00, 0x0a },
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{ NBC_QPSK, FEC_9_10, 0x00, 0x0b },
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/* 8PSK */
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{ _8PSK, FEC_3_5, 0x00, 0x0c },
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{ _8PSK, FEC_2_3, 0x00, 0x0d },
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{ _8PSK, FEC_3_4, 0x00, 0x0e },
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{ _8PSK, FEC_5_6, 0x00, 0x0f },
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{ _8PSK, FEC_9_10, 0x00, 0x11 },
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};
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static int cx24116_lookup_fecmod(struct cx24116_state* state,
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fe_modulation_t m, fe_code_rate_t f)
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{
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int i, ret = -EOPNOTSUPP;
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for(i=0 ; i < sizeof(CX24116_MODFEC_MODES) / sizeof(struct cx24116_modfec) ; i++)
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{
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if( (m == CX24116_MODFEC_MODES[i].modulation) &&
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(f == CX24116_MODFEC_MODES[i].fec) )
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{
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ret = i;
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break;
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}
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}
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return ret;
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}
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static int cx24116_set_fec(struct cx24116_state* state, fe_modulation_t mod, fe_code_rate_t fec)
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{
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int ret = 0;
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dprintk("%s()\n", __func__);
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ret = cx24116_lookup_fecmod(state, mod, fec);
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if(ret < 0)
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return ret;
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state->dnxt.fec_val = CX24116_MODFEC_MODES[ret].val;
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state->dnxt.fec_mask = CX24116_MODFEC_MODES[ret].mask;
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dprintk("%s() fec_val/mask = 0x%02x/0x%02x\n", __func__,
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state->dnxt.fec_val, state->dnxt.fec_mask);
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return 0;
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}
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static int cx24116_set_symbolrate(struct cx24116_state* state, u32 rate)
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{
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int ret = 0;
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dprintk("%s()\n", __func__);
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state->dnxt.symbol_rate = rate;
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dprintk("%s() symbol_rate = %d\n", __func__, state->dnxt.symbol_rate);
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/* check if symbol rate is within limits */
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if ((state->dnxt.symbol_rate > state->frontend.ops.info.symbol_rate_max) ||
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(state->dnxt.symbol_rate < state->frontend.ops.info.symbol_rate_min))
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ret = -EOPNOTSUPP;
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return ret;
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}
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static int cx24116_load_firmware (struct dvb_frontend* fe, const struct firmware *fw);
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static int cx24116_firmware_ondemand(struct dvb_frontend* fe)
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{
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struct cx24116_state *state = fe->demodulator_priv;
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const struct firmware *fw;
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int ret = 0;
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dprintk("%s()\n",__func__);
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if (cx24116_readreg(state, 0x20) > 0)
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{
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if (state->skip_fw_load)
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return 0;
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/* Load firmware */
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/* request the firmware, this will block until someone uploads it */
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printk("%s: Waiting for firmware upload (%s)...\n", __func__, CX24116_DEFAULT_FIRMWARE);
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ret = request_firmware(&fw, CX24116_DEFAULT_FIRMWARE, &state->i2c->dev);
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printk("%s: Waiting for firmware upload(2)...\n", __func__);
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if (ret) {
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printk("%s: No firmware uploaded (timeout or file not found?)\n", __func__);
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return ret;
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}
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/* Make sure we don't recurse back through here during loading */
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state->skip_fw_load = 1;
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ret = cx24116_load_firmware(fe, fw);
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if (ret)
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printk("%s: Writing firmware to device failed\n", __func__);
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release_firmware(fw);
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printk("%s: Firmware upload %s\n", __func__, ret == 0 ? "complete" : "failed");
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/* Ensure firmware is always loaded if required */
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state->skip_fw_load = 0;
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}
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return ret;
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}
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/* Take a basic firmware command structure, format it and forward it for processing */
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static int cx24116_cmd_execute(struct dvb_frontend* fe, struct cx24116_cmd *cmd)
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{
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struct cx24116_state *state = fe->demodulator_priv;
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int i, ret;
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dprintk("%s()\n", __func__);
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/* Load the firmware if required */
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if ( (ret = cx24116_firmware_ondemand(fe)) != 0)
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{
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printk("%s(): Unable initialise the firmware\n", __func__);
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return ret;
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}
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/* Write the command */
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for(i = 0; i < cmd->len ; i++)
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{
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dprintk("%s: 0x%02x == 0x%02x\n", __func__, i, cmd->args[i]);
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cx24116_writereg(state, i, cmd->args[i]);
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}
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/* Start execution and wait for cmd to terminate */
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cx24116_writereg(state, 0x1f, 0x01);
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while( cx24116_readreg(state, 0x1f) )
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{
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msleep(10);
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if(i++ > 64)
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{
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/* Avoid looping forever if the firmware does no respond */
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printk("%s() Firmware not responding\n", __func__);
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return -EREMOTEIO;
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}
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}
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return 0;
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}
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static int cx24116_load_firmware (struct dvb_frontend* fe, const struct firmware *fw)
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{
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struct cx24116_state* state = fe->demodulator_priv;
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struct cx24116_cmd cmd;
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int ret;
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dprintk("%s\n", __func__);
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dprintk("Firmware is %zu bytes (%02x %02x .. %02x %02x)\n"
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,fw->size
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,fw->data[0]
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,fw->data[1]
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,fw->data[ fw->size-2 ]
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,fw->data[ fw->size-1 ]
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);
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/* Toggle 88x SRST pin to reset demod */
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if (state->config->reset_device)
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state->config->reset_device(fe);
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/* Begin the firmware load process */
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/* Prepare the demod, load the firmware, cleanup after load */
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cx24116_writereg(state, 0xF1, 0x08);
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cx24116_writereg(state, 0xF2, cx24116_readreg(state, 0xF2) | 0x03);
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cx24116_writereg(state, 0xF3, 0x46);
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cx24116_writereg(state, 0xF9, 0x00);
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cx24116_writereg(state, 0xF0, 0x03);
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cx24116_writereg(state, 0xF4, 0x81);
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cx24116_writereg(state, 0xF5, 0x00);
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cx24116_writereg(state, 0xF6, 0x00);
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/* write the entire firmware as one transaction */
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cx24116_writeregN(state, 0xF7, fw->data, fw->size);
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cx24116_writereg(state, 0xF4, 0x10);
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cx24116_writereg(state, 0xF0, 0x00);
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cx24116_writereg(state, 0xF8, 0x06);
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/* Firmware CMD 10: Chip config? */
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cmd.args[0x00] = CMD_INIT_CMD10;
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cmd.args[0x01] = 0x05;
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cmd.args[0x02] = 0xdc;
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cmd.args[0x03] = 0xda;
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cmd.args[0x04] = 0xae;
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cmd.args[0x05] = 0xaa;
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cmd.args[0x06] = 0x04;
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cmd.args[0x07] = 0x9d;
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cmd.args[0x08] = 0xfc;
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cmd.args[0x09] = 0x06;
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cmd.len= 0x0a;
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ret = cx24116_cmd_execute(fe, &cmd);
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if (ret != 0)
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return ret;
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|
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cx24116_writereg(state, 0x9d, 0x00);
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|
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/* Firmware CMD 14: Unknown */
|
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cmd.args[0x00] = CMD_INIT_CMD14;
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cmd.args[0x01] = 0x00;
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cmd.args[0x02] = 0x00;
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cmd.len= 0x03;
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ret = cx24116_cmd_execute(fe, &cmd);
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if (ret != 0)
|
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return ret;
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|
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cx24116_writereg(state, 0xe5, 0x00);
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|
|
/* Firmware CMD 13: Unknown - Firmware config? */
|
|
cmd.args[0x00] = CMD_INIT_CMD13;
|
|
cmd.args[0x01] = 0x01;
|
|
cmd.args[0x02] = 0x75;
|
|
cmd.args[0x03] = 0x00;
|
|
if (state->config->mpg_clk_pos_pol)
|
|
cmd.args[0x04] = state->config->mpg_clk_pos_pol;
|
|
else
|
|
cmd.args[0x04] = 0x02;
|
|
cmd.args[0x05] = 0x00;
|
|
cmd.len= 0x06;
|
|
ret = cx24116_cmd_execute(fe, &cmd);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cx24116_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
|
|
{
|
|
/* The isl6421 module will override this function in the fops. */
|
|
dprintk("%s() This should never appear if the isl6421 module is loaded correctly\n",__func__);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int cx24116_read_status(struct dvb_frontend* fe, fe_status_t* status)
|
|
{
|
|
struct cx24116_state *state = fe->demodulator_priv;
|
|
|
|
int lock = cx24116_readreg(state, 0x9d);
|
|
|
|
dprintk("%s: status = 0x%02x\n", __func__, lock);
|
|
|
|
*status = 0;
|
|
|
|
if (lock & 0x01)
|
|
*status |= FE_HAS_SIGNAL;
|
|
if (lock & 0x02)
|
|
*status |= FE_HAS_CARRIER;
|
|
if (lock & 0x04)
|
|
*status |= FE_HAS_VITERBI;
|
|
if (lock & 0x08)
|
|
*status |= FE_HAS_SYNC | FE_HAS_LOCK;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* TODO: Not clear how we do this */
|
|
static int cx24116_read_ber(struct dvb_frontend* fe, u32* ber)
|
|
{
|
|
//struct cx24116_state *state = fe->demodulator_priv;
|
|
dprintk("%s()\n", __func__);
|
|
*ber = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Signal strength (0..100)% = (sig & 0xf0) * 10 + (sig & 0x0f) * 10 / 16 */
|
|
static int cx24116_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength)
|
|
{
|
|
struct cx24116_state *state = fe->demodulator_priv;
|
|
u8 strength_reg;
|
|
static const u32 strength_tab[] = { /* 10 x Table (rounded up) */
|
|
0x00000,0x0199A,0x03333,0x04ccD,0x06667,0x08000,0x0999A,0x0b333,0x0cccD,0x0e667,
|
|
0x10000,0x1199A,0x13333,0x14ccD,0x16667,0x18000 };
|
|
|
|
dprintk("%s()\n", __func__);
|
|
|
|
strength_reg = cx24116_readreg(state, CX24116_REG_SIGNAL);
|
|
|
|
if(strength_reg < 0xa0)
|
|
*signal_strength = strength_tab [ ( strength_reg & 0xf0 ) >> 4 ] +
|
|
( strength_tab [ ( strength_reg & 0x0f ) ] >> 4 );
|
|
else
|
|
*signal_strength = 0xffff;
|
|
|
|
dprintk("%s: Signal strength (raw / cooked) = (0x%02x / 0x%04x)\n",
|
|
__func__,strength_reg,*signal_strength);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* TODO: Not clear how we do this */
|
|
static int cx24116_read_snr(struct dvb_frontend* fe, u16* snr)
|
|
{
|
|
//struct cx24116_state *state = fe->demodulator_priv;
|
|
dprintk("%s()\n", __func__);
|
|
*snr = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* TODO: Not clear how we do this */
|
|
static int cx24116_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
|
|
{
|
|
//struct cx24116_state *state = fe->demodulator_priv;
|
|
dprintk("%s()\n", __func__);
|
|
*ucblocks = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Overwrite the current tuning params, we are about to tune */
|
|
static void cx24116_clone_params(struct dvb_frontend* fe)
|
|
{
|
|
struct cx24116_state *state = fe->demodulator_priv;
|
|
memcpy(&state->dcur, &state->dnxt, sizeof(state->dcur));
|
|
}
|
|
|
|
static int cx24116_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
|
|
{
|
|
struct cx24116_cmd cmd;
|
|
int ret;
|
|
|
|
dprintk("%s(%d)\n", __func__, tone);
|
|
if ( (tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF) ) {
|
|
printk("%s: Invalid, tone=%d\n", __func__, tone);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* This is always done before the tone is set */
|
|
cmd.args[0x00] = CMD_SET_TONEPRE;
|
|
cmd.args[0x01] = 0x00;
|
|
cmd.len= 0x02;
|
|
ret = cx24116_cmd_execute(fe, &cmd);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
/* Now we set the tone */
|
|
cmd.args[0x00] = CMD_SET_TONE;
|
|
cmd.args[0x01] = 0x00;
|
|
cmd.args[0x02] = 0x00;
|
|
|
|
switch (tone) {
|
|
case SEC_TONE_ON:
|
|
dprintk("%s: setting tone on\n", __func__);
|
|
cmd.args[0x03] = 0x01;
|
|
break;
|
|
case SEC_TONE_OFF:
|
|
dprintk("%s: setting tone off\n",__func__);
|
|
cmd.args[0x03] = 0x00;
|
|
break;
|
|
}
|
|
cmd.len= 0x04;
|
|
|
|
return cx24116_cmd_execute(fe, &cmd);
|
|
}
|
|
|
|
/* Initialise DiSEqC */
|
|
static int cx24116_diseqc_init(struct dvb_frontend* fe)
|
|
{
|
|
struct cx24116_state *state = fe->demodulator_priv;
|
|
|
|
/* Default DiSEqC burst state */
|
|
state->burst = CX24116_DISEQC_MINI_A;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Send DiSEqC message with derived burst (hack) || previous burst */
|
|
static int cx24116_send_diseqc_msg(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *d)
|
|
{
|
|
struct cx24116_state *state = fe->demodulator_priv;
|
|
struct cx24116_cmd cmd;
|
|
int i, ret;
|
|
|
|
/* Dump DiSEqC message */
|
|
if (debug) {
|
|
printk("cx24116: %s(", __func__);
|
|
for(i = 0 ; i < d->msg_len ;) {
|
|
printk("0x%02x", d->msg[i]);
|
|
if(++i < d->msg_len)
|
|
printk(", ");
|
|
}
|
|
printk(")\n");
|
|
}
|
|
|
|
if(d->msg_len > (CX24116_ARGLEN - CX24116_DISEQC_MSGOFS))
|
|
return -EINVAL;
|
|
|
|
cmd.args[0x00] = CMD_SEND_DISEQC;
|
|
cmd.args[CX24116_DISEQC_ARG2_2] = 0x02;
|
|
cmd.args[CX24116_DISEQC_ARG3_0] = 0x00;
|
|
cmd.args[CX24116_DISEQC_ARG4_0] = 0x00;
|
|
|
|
/* DiSEqC message */
|
|
for (i = 0; i < d->msg_len; i++)
|
|
cmd.args[CX24116_DISEQC_MSGOFS + i] = d->msg[i];
|
|
|
|
/* Hack: Derive burst from command else use previous burst */
|
|
if(d->msg_len >= 4 && d->msg[2] == 0x38)
|
|
cmd.args[CX24116_DISEQC_BURST] = (d->msg[3] >> 2) & 1;
|
|
else
|
|
cmd.args[CX24116_DISEQC_BURST] = state->burst;
|
|
|
|
cmd.args[CX24116_DISEQC_MSGLEN] = d->msg_len;
|
|
cmd.len = CX24116_DISEQC_MSGOFS + d->msg_len;
|
|
|
|
ret = cx24116_cmd_execute(fe, &cmd);
|
|
|
|
/* Firmware command duration is unknown, so guess...
|
|
*
|
|
* Eutelsat spec:
|
|
* >15ms delay +
|
|
* 13.5ms per byte +
|
|
* >15ms delay +
|
|
* 12.5ms burst +
|
|
* >15ms delay
|
|
*/
|
|
if(ret == 0)
|
|
msleep( (cmd.args[CX24116_DISEQC_MSGLEN] << 4) + 60 );
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Send DiSEqC burst */
|
|
static int cx24116_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
|
|
{
|
|
struct cx24116_state *state = fe->demodulator_priv;
|
|
struct cx24116_cmd cmd;
|
|
int ret;
|
|
|
|
dprintk("%s(%d)\n",__func__,(int)burst);
|
|
|
|
cmd.args[0x00] = CMD_SEND_DISEQC;
|
|
cmd.args[CX24116_DISEQC_ARG2_2] = 0x02;
|
|
cmd.args[CX24116_DISEQC_ARG3_0] = 0x00;
|
|
cmd.args[CX24116_DISEQC_ARG4_0] = 0x00;
|
|
|
|
if (burst == SEC_MINI_A)
|
|
cmd.args[CX24116_DISEQC_BURST] = CX24116_DISEQC_MINI_A;
|
|
else if(burst == SEC_MINI_B)
|
|
cmd.args[CX24116_DISEQC_BURST] = CX24116_DISEQC_MINI_B;
|
|
else
|
|
return -EINVAL;
|
|
|
|
/* Cache as previous burst state */
|
|
state->burst= cmd.args[CX24116_DISEQC_BURST];
|
|
|
|
cmd.args[CX24116_DISEQC_MSGLEN] = 0x00;
|
|
cmd.len= CX24116_DISEQC_MSGOFS;
|
|
|
|
ret= cx24116_cmd_execute(fe, &cmd);
|
|
|
|
/* Firmware command duration is unknown, so guess... */
|
|
if(ret == 0)
|
|
msleep(60);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void cx24116_release(struct dvb_frontend* fe)
|
|
{
|
|
struct cx24116_state* state = fe->demodulator_priv;
|
|
dprintk("%s\n",__func__);
|
|
kfree(state);
|
|
}
|
|
|
|
static struct dvb_frontend_ops cx24116_ops;
|
|
|
|
struct dvb_frontend* cx24116_attach(const struct cx24116_config* config,
|
|
struct i2c_adapter* i2c)
|
|
{
|
|
struct cx24116_state* state = NULL;
|
|
int ret;
|
|
|
|
dprintk("%s\n",__func__);
|
|
|
|
/* allocate memory for the internal state */
|
|
state = kmalloc(sizeof(struct cx24116_state), GFP_KERNEL);
|
|
if (state == NULL) {
|
|
printk("Unable to kmalloc\n");
|
|
goto error;
|
|
}
|
|
|
|
/* setup the state */
|
|
memset(state, 0, sizeof(struct cx24116_state));
|
|
|
|
state->config = config;
|
|
state->i2c = i2c;
|
|
|
|
/* check if the demod is present */
|
|
ret = (cx24116_readreg(state, 0xFF) << 8) | cx24116_readreg(state, 0xFE);
|
|
if (ret != 0x0501) {
|
|
printk("Invalid probe, probably not a CX24116 device\n");
|
|
goto error;
|
|
}
|
|
|
|
/* create dvb_frontend */
|
|
memcpy(&state->frontend.ops, &cx24116_ops, sizeof(struct dvb_frontend_ops));
|
|
state->frontend.demodulator_priv = state;
|
|
return &state->frontend;
|
|
|
|
error:
|
|
kfree(state);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int cx24116_get_params(struct dvb_frontend* fe)
|
|
{
|
|
struct cx24116_state *state = fe->demodulator_priv;
|
|
struct tv_frontend_properties *cache = &fe->tv_property_cache;
|
|
|
|
dprintk("%s()\n",__func__);
|
|
|
|
cache->frequency = state->dcur.frequency;
|
|
cache->inversion = state->dcur.inversion;
|
|
cache->modulation = state->dcur.modulation;
|
|
cache->fec_inner = state->dcur.fec;
|
|
cache->symbol_rate = state->dcur.symbol_rate;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cx24116_initfe(struct dvb_frontend* fe)
|
|
{
|
|
dprintk("%s()\n",__func__);
|
|
|
|
return cx24116_diseqc_init(fe);
|
|
}
|
|
|
|
static int cx24116_set_property(struct dvb_frontend *fe, tv_property_t* tvp)
|
|
{
|
|
dprintk("%s(..)\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
static int cx24116_set_params(struct dvb_frontend *fe)
|
|
{
|
|
dprintk("%s(..) We were notified that a tune request may occur\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
/* dvb-core told us to tune, the tv property cache will be complete,
|
|
* it's safe for is to pull values and use them for tuning purposes.
|
|
*/
|
|
static int cx24116_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
|
|
{
|
|
struct cx24116_state *state = fe->demodulator_priv;
|
|
struct tv_frontend_properties *c = &fe->tv_property_cache;
|
|
struct cx24116_cmd cmd;
|
|
fe_status_t tunerstat;
|
|
int ret, above30msps;
|
|
u8 retune=4;
|
|
|
|
dprintk("%s()\n",__func__);
|
|
|
|
state->dnxt.modulation = c->modulation;
|
|
state->dnxt.frequency = c->frequency;
|
|
|
|
if ((ret = cx24116_set_inversion(state, c->inversion)) != 0)
|
|
return ret;
|
|
|
|
if ((ret = cx24116_set_fec(state, c->modulation, c->fec_inner)) != 0)
|
|
return ret;
|
|
|
|
if ((ret = cx24116_set_symbolrate(state, c->symbol_rate)) != 0)
|
|
return ret;
|
|
|
|
/* discard the 'current' tuning parameters and prepare to tune */
|
|
cx24116_clone_params(fe);
|
|
|
|
dprintk("%s: frequency = %d\n", __func__, state->dcur.frequency);
|
|
dprintk("%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
|
|
dprintk("%s: FEC = %d (mask/val = 0x%02x/0x%02x)\n", __func__,
|
|
state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
|
|
dprintk("%s: Inversion = %d (val = 0x%02x)\n", __func__,
|
|
state->dcur.inversion, state->dcur.inversion_val);
|
|
|
|
if (state->config->set_ts_params)
|
|
state->config->set_ts_params(fe, 0);
|
|
|
|
above30msps = (state->dcur.symbol_rate > 30000000);
|
|
|
|
if (above30msps){
|
|
cx24116_writereg(state, 0xF9, 0x01);
|
|
cx24116_writereg(state, 0xF3, 0x44);
|
|
} else {
|
|
cx24116_writereg(state, 0xF9, 0x00);
|
|
cx24116_writereg(state, 0xF3, 0x46);
|
|
}
|
|
|
|
/* Prepare a tune request */
|
|
cmd.args[0x00] = CMD_TUNEREQUEST;
|
|
|
|
/* Frequency */
|
|
cmd.args[0x01] = (state->dcur.frequency & 0xff0000) >> 16;
|
|
cmd.args[0x02] = (state->dcur.frequency & 0x00ff00) >> 8;
|
|
cmd.args[0x03] = (state->dcur.frequency & 0x0000ff);
|
|
|
|
/* Symbol Rate */
|
|
cmd.args[0x04] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
|
|
cmd.args[0x05] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
|
|
|
|
/* Automatic Inversion */
|
|
cmd.args[0x06] = state->dcur.inversion_val;
|
|
|
|
/* Modulation / FEC & Pilot Off */
|
|
cmd.args[0x07] = state->dcur.fec_val;
|
|
|
|
if (c->pilot == PILOT_ON)
|
|
cmd.args[0x07] |= 0x40;
|
|
|
|
cmd.args[0x08] = CX24116_SEARCH_RANGE_KHZ >> 8;
|
|
cmd.args[0x09] = CX24116_SEARCH_RANGE_KHZ & 0xff;
|
|
cmd.args[0x0a] = 0x00;
|
|
cmd.args[0x0b] = 0x00;
|
|
cmd.args[0x0c] = 0x02;
|
|
cmd.args[0x0d] = state->dcur.fec_mask;
|
|
|
|
if (above30msps){
|
|
cmd.args[0x0e] = 0x04;
|
|
cmd.args[0x0f] = 0x00;
|
|
cmd.args[0x10] = 0x01;
|
|
cmd.args[0x11] = 0x77;
|
|
cmd.args[0x12] = 0x36;
|
|
} else {
|
|
cmd.args[0x0e] = 0x06;
|
|
cmd.args[0x0f] = 0x00;
|
|
cmd.args[0x10] = 0x00;
|
|
cmd.args[0x11] = 0xFA;
|
|
cmd.args[0x12] = 0x24;
|
|
}
|
|
|
|
cmd.len= 0x13;
|
|
|
|
/* We need to support pilot and non-pilot tuning in the
|
|
* driver automatically. This is a workaround for because
|
|
* the demod does not support autodetect.
|
|
*/
|
|
do {
|
|
/* Reset status register? */
|
|
cx24116_writereg(state, 0x9d, 0xc1);
|
|
|
|
/* Tune */
|
|
ret = cx24116_cmd_execute(fe, &cmd);
|
|
if( ret != 0 )
|
|
break;
|
|
|
|
/* The hardware can take time to lock, wait a while */
|
|
msleep(500);
|
|
|
|
cx24116_read_status(fe, &tunerstat);
|
|
if(tunerstat & FE_HAS_SIGNAL) {
|
|
if(tunerstat & FE_HAS_SYNC)
|
|
/* Tuned */
|
|
break;
|
|
else if(c->pilot == PILOT_AUTO)
|
|
/* Toggle pilot bit */
|
|
cmd.args[0x07] ^= 0x40;
|
|
}
|
|
}
|
|
while(--retune);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct dvb_frontend_ops cx24116_ops = {
|
|
|
|
.info = {
|
|
.name = "Conexant CX24116/CX24118",
|
|
.type = FE_QPSK,
|
|
.frequency_min = 950000,
|
|
.frequency_max = 2150000,
|
|
.frequency_stepsize = 1011, /* kHz for QPSK frontends */
|
|
.frequency_tolerance = 5000,
|
|
.symbol_rate_min = 1000000,
|
|
.symbol_rate_max = 45000000,
|
|
.caps = FE_CAN_INVERSION_AUTO |
|
|
FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
|
|
FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
|
|
FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
|
|
FE_CAN_QPSK | FE_CAN_RECOVER
|
|
},
|
|
|
|
.release = cx24116_release,
|
|
|
|
.init = cx24116_initfe,
|
|
.read_status = cx24116_read_status,
|
|
.read_ber = cx24116_read_ber,
|
|
.read_signal_strength = cx24116_read_signal_strength,
|
|
.read_snr = cx24116_read_snr,
|
|
.read_ucblocks = cx24116_read_ucblocks,
|
|
.set_tone = cx24116_set_tone,
|
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.set_voltage = cx24116_set_voltage,
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.diseqc_send_master_cmd = cx24116_send_diseqc_msg,
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.diseqc_send_burst = cx24116_diseqc_send_burst,
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.set_property = cx24116_set_property,
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.set_params = cx24116_set_params,
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.set_frontend = cx24116_set_frontend,
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};
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
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MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24116/cx24118 hardware");
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MODULE_AUTHOR("Steven Toth");
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MODULE_LICENSE("GPL");
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EXPORT_SYMBOL(cx24116_attach);
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