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linux/drivers/media/dvb/frontends/stb0899_drv.c
Klaus Schmidinger fdaaee6c4a [media] DVB: stb0899: speed up getting BER values 
stb0899_read_ber() takes 500ms (half a second!) to deliver the current
BER value. Apparently it takes 5 subsequent readings, with a 100ms pause
between them (and even before the first one). This is a real performance
brake if an application freqeuently reads the BER of several devices.
The attached patch reduces this to a single reading, with no more pausing.
I didn't observe any negative side effects of this change.

Signed-off-by: Klaus Schmidinger <Klaus.Schmidinger@tvdr.de>
Cc: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-18 19:29:59 -03:00

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/*
STB0899 Multistandard Frontend driver
Copyright (C) Manu Abraham (abraham.manu@gmail.com)
Copyright (C) ST Microelectronics
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.
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/dvb/frontend.h>
#include "dvb_frontend.h"
#include "stb0899_drv.h"
#include "stb0899_priv.h"
#include "stb0899_reg.h"
static unsigned int verbose = 0;//1;
module_param(verbose, int, 0644);
/* C/N in dB/10, NIRM/NIRL */
static const struct stb0899_tab stb0899_cn_tab[] = {
{ 200, 2600 },
{ 190, 2700 },
{ 180, 2860 },
{ 170, 3020 },
{ 160, 3210 },
{ 150, 3440 },
{ 140, 3710 },
{ 130, 4010 },
{ 120, 4360 },
{ 110, 4740 },
{ 100, 5190 },
{ 90, 5670 },
{ 80, 6200 },
{ 70, 6770 },
{ 60, 7360 },
{ 50, 7970 },
{ 40, 8250 },
{ 30, 9000 },
{ 20, 9450 },
{ 15, 9600 },
};
/* DVB-S AGCIQ_VALUE vs. signal level in dBm/10.
* As measured, connected to a modulator.
* -8.0 to -50.0 dBm directly connected,
* -52.0 to -74.8 with extra attenuation.
* Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm.
* Crude linear extrapolation below -84.8dBm and above -8.0dBm.
*/
static const struct stb0899_tab stb0899_dvbsrf_tab[] = {
{ -750, -128 },
{ -748, -94 },
{ -745, -92 },
{ -735, -90 },
{ -720, -87 },
{ -670, -77 },
{ -640, -70 },
{ -610, -62 },
{ -600, -60 },
{ -590, -56 },
{ -560, -41 },
{ -540, -25 },
{ -530, -17 },
{ -520, -11 },
{ -500, 1 },
{ -490, 6 },
{ -480, 10 },
{ -440, 22 },
{ -420, 27 },
{ -400, 31 },
{ -380, 34 },
{ -340, 40 },
{ -320, 43 },
{ -280, 48 },
{ -250, 52 },
{ -230, 55 },
{ -180, 61 },
{ -140, 66 },
{ -90, 73 },
{ -80, 74 },
{ 500, 127 }
};
/* DVB-S2 IF_AGC_GAIN vs. signal level in dBm/10.
* As measured, connected to a modulator.
* -8.0 to -50.1 dBm directly connected,
* -53.0 to -76.6 with extra attenuation.
* Cut-off to IF_AGC_GAIN = 0x3fff below -76.6dBm.
* Crude linear extrapolation below -76.6dBm and above -8.0dBm.
*/
static const struct stb0899_tab stb0899_dvbs2rf_tab[] = {
{ 700, 0 },
{ -80, 3217 },
{ -150, 3893 },
{ -190, 4217 },
{ -240, 4621 },
{ -280, 4945 },
{ -320, 5273 },
{ -350, 5545 },
{ -370, 5741 },
{ -410, 6147 },
{ -450, 6671 },
{ -490, 7413 },
{ -501, 7665 },
{ -530, 8767 },
{ -560, 10219 },
{ -580, 10939 },
{ -590, 11518 },
{ -600, 11723 },
{ -650, 12659 },
{ -690, 13219 },
{ -730, 13645 },
{ -750, 13909 },
{ -766, 14153 },
{ -950, 16383 }
};
/* DVB-S2 Es/N0 quant in dB/100 vs read value * 100*/
static struct stb0899_tab stb0899_quant_tab[] = {
{ 0, 0 },
{ 0, 100 },
{ 600, 200 },
{ 950, 299 },
{ 1200, 398 },
{ 1400, 501 },
{ 1560, 603 },
{ 1690, 700 },
{ 1810, 804 },
{ 1910, 902 },
{ 2000, 1000 },
{ 2080, 1096 },
{ 2160, 1202 },
{ 2230, 1303 },
{ 2350, 1496 },
{ 2410, 1603 },
{ 2460, 1698 },
{ 2510, 1799 },
{ 2600, 1995 },
{ 2650, 2113 },
{ 2690, 2213 },
{ 2720, 2291 },
{ 2760, 2399 },
{ 2800, 2512 },
{ 2860, 2692 },
{ 2930, 2917 },
{ 2960, 3020 },
{ 3010, 3199 },
{ 3040, 3311 },
{ 3060, 3388 },
{ 3120, 3631 },
{ 3190, 3936 },
{ 3400, 5012 },
{ 3610, 6383 },
{ 3800, 7943 },
{ 4210, 12735 },
{ 4500, 17783 },
{ 4690, 22131 },
{ 4810, 25410 }
};
/* DVB-S2 Es/N0 estimate in dB/100 vs read value */
static struct stb0899_tab stb0899_est_tab[] = {
{ 0, 0 },
{ 0, 1 },
{ 301, 2 },
{ 1204, 16 },
{ 1806, 64 },
{ 2408, 256 },
{ 2709, 512 },
{ 3010, 1023 },
{ 3311, 2046 },
{ 3612, 4093 },
{ 3823, 6653 },
{ 3913, 8185 },
{ 4010, 10233 },
{ 4107, 12794 },
{ 4214, 16368 },
{ 4266, 18450 },
{ 4311, 20464 },
{ 4353, 22542 },
{ 4391, 24604 },
{ 4425, 26607 },
{ 4457, 28642 },
{ 4487, 30690 },
{ 4515, 32734 },
{ 4612, 40926 },
{ 4692, 49204 },
{ 4816, 65464 },
{ 4913, 81846 },
{ 4993, 98401 },
{ 5060, 114815 },
{ 5118, 131220 },
{ 5200, 158489 },
{ 5300, 199526 },
{ 5400, 251189 },
{ 5500, 316228 },
{ 5600, 398107 },
{ 5720, 524807 },
{ 5721, 526017 },
};
static int _stb0899_read_reg(struct stb0899_state *state, unsigned int reg)
{
int ret;
u8 b0[] = { reg >> 8, reg & 0xff };
u8 buf;
struct i2c_msg msg[] = {
{
.addr = state->config->demod_address,
.flags = 0,
.buf = b0,
.len = 2
},{
.addr = state->config->demod_address,
.flags = I2C_M_RD,
.buf = &buf,
.len = 1
}
};
ret = i2c_transfer(state->i2c, msg, 2);
if (ret != 2) {
if (ret != -ERESTARTSYS)
dprintk(state->verbose, FE_ERROR, 1,
"Read error, Reg=[0x%02x], Status=%d",
reg, ret);
return ret < 0 ? ret : -EREMOTEIO;
}
if (unlikely(*state->verbose >= FE_DEBUGREG))
dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%02x], data=%02x",
reg, buf);
return (unsigned int)buf;
}
int stb0899_read_reg(struct stb0899_state *state, unsigned int reg)
{
int result;
result = _stb0899_read_reg(state, reg);
/*
* Bug ID 9:
* access to 0xf2xx/0xf6xx
* must be followed by read from 0xf2ff/0xf6ff.
*/
if ((reg != 0xf2ff) && (reg != 0xf6ff) &&
(((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
_stb0899_read_reg(state, (reg | 0x00ff));
return result;
}
u32 _stb0899_read_s2reg(struct stb0899_state *state,
u32 stb0899_i2cdev,
u32 stb0899_base_addr,
u16 stb0899_reg_offset)
{
int status;
u32 data;
u8 buf[7] = { 0 };
u16 tmpaddr;
u8 buf_0[] = {
GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */
GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */
GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */
GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */
GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */
GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */
};
u8 buf_1[] = {
0x00, /* 0xf3 Reg Offset */
0x00, /* 0x44 Reg Offset */
};
struct i2c_msg msg_0 = {
.addr = state->config->demod_address,
.flags = 0,
.buf = buf_0,
.len = 6
};
struct i2c_msg msg_1 = {
.addr = state->config->demod_address,
.flags = 0,
.buf = buf_1,
.len = 2
};
struct i2c_msg msg_r = {
.addr = state->config->demod_address,
.flags = I2C_M_RD,
.buf = buf,
.len = 4
};
tmpaddr = stb0899_reg_offset & 0xff00;
if (!(stb0899_reg_offset & 0x8))
tmpaddr = stb0899_reg_offset | 0x20;
buf_1[0] = GETBYTE(tmpaddr, BYTE1);
buf_1[1] = GETBYTE(tmpaddr, BYTE0);
status = i2c_transfer(state->i2c, &msg_0, 1);
if (status < 1) {
if (status != -ERESTARTSYS)
printk(KERN_ERR "%s ERR(1), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
__func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
goto err;
}
/* Dummy */
status = i2c_transfer(state->i2c, &msg_1, 1);
if (status < 1)
goto err;
status = i2c_transfer(state->i2c, &msg_r, 1);
if (status < 1)
goto err;
buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);
buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);
/* Actual */
status = i2c_transfer(state->i2c, &msg_1, 1);
if (status < 1) {
if (status != -ERESTARTSYS)
printk(KERN_ERR "%s ERR(2), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
__func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
goto err;
}
status = i2c_transfer(state->i2c, &msg_r, 1);
if (status < 1) {
if (status != -ERESTARTSYS)
printk(KERN_ERR "%s ERR(3), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
__func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
return status < 0 ? status : -EREMOTEIO;
}
data = MAKEWORD32(buf[3], buf[2], buf[1], buf[0]);
if (unlikely(*state->verbose >= FE_DEBUGREG))
printk(KERN_DEBUG "%s Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",
__func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, data);
return data;
err:
return status < 0 ? status : -EREMOTEIO;
}
int stb0899_write_s2reg(struct stb0899_state *state,
u32 stb0899_i2cdev,
u32 stb0899_base_addr,
u16 stb0899_reg_offset,
u32 stb0899_data)
{
int status;
/* Base Address Setup */
u8 buf_0[] = {
GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */
GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */
GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */
GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */
GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */
GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */
};
u8 buf_1[] = {
0x00, /* 0xf3 Reg Offset */
0x00, /* 0x44 Reg Offset */
0x00, /* data */
0x00, /* data */
0x00, /* data */
0x00, /* data */
};
struct i2c_msg msg_0 = {
.addr = state->config->demod_address,
.flags = 0,
.buf = buf_0,
.len = 6
};
struct i2c_msg msg_1 = {
.addr = state->config->demod_address,
.flags = 0,
.buf = buf_1,
.len = 6
};
buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);
buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);
buf_1[2] = GETBYTE(stb0899_data, BYTE0);
buf_1[3] = GETBYTE(stb0899_data, BYTE1);
buf_1[4] = GETBYTE(stb0899_data, BYTE2);
buf_1[5] = GETBYTE(stb0899_data, BYTE3);
if (unlikely(*state->verbose >= FE_DEBUGREG))
printk(KERN_DEBUG "%s Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",
__func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data);
status = i2c_transfer(state->i2c, &msg_0, 1);
if (unlikely(status < 1)) {
if (status != -ERESTARTSYS)
printk(KERN_ERR "%s ERR (1), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",
__func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);
goto err;
}
status = i2c_transfer(state->i2c, &msg_1, 1);
if (unlikely(status < 1)) {
if (status != -ERESTARTSYS)
printk(KERN_ERR "%s ERR (2), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",
__func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);
return status < 0 ? status : -EREMOTEIO;
}
return 0;
err:
return status < 0 ? status : -EREMOTEIO;
}
int stb0899_read_regs(struct stb0899_state *state, unsigned int reg, u8 *buf, u32 count)
{
int status;
u8 b0[] = { reg >> 8, reg & 0xff };
struct i2c_msg msg[] = {
{
.addr = state->config->demod_address,
.flags = 0,
.buf = b0,
.len = 2
},{
.addr = state->config->demod_address,
.flags = I2C_M_RD,
.buf = buf,
.len = count
}
};
status = i2c_transfer(state->i2c, msg, 2);
if (status != 2) {
if (status != -ERESTARTSYS)
printk(KERN_ERR "%s Read error, Reg=[0x%04x], Count=%u, Status=%d\n",
__func__, reg, count, status);
goto err;
}
/*
* Bug ID 9:
* access to 0xf2xx/0xf6xx
* must be followed by read from 0xf2ff/0xf6ff.
*/
if ((reg != 0xf2ff) && (reg != 0xf6ff) &&
(((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
_stb0899_read_reg(state, (reg | 0x00ff));
if (unlikely(*state->verbose >= FE_DEBUGREG)) {
int i;
printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg);
for (i = 0; i < count; i++) {
printk(" %02x", buf[i]);
}
printk("\n");
}
return 0;
err:
return status < 0 ? status : -EREMOTEIO;
}
int stb0899_write_regs(struct stb0899_state *state, unsigned int reg, u8 *data, u32 count)
{
int ret;
u8 buf[2 + count];
struct i2c_msg i2c_msg = {
.addr = state->config->demod_address,
.flags = 0,
.buf = buf,
.len = 2 + count
};
buf[0] = reg >> 8;
buf[1] = reg & 0xff;
memcpy(&buf[2], data, count);
if (unlikely(*state->verbose >= FE_DEBUGREG)) {
int i;
printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg);
for (i = 0; i < count; i++)
printk(" %02x", data[i]);
printk("\n");
}
ret = i2c_transfer(state->i2c, &i2c_msg, 1);
/*
* Bug ID 9:
* access to 0xf2xx/0xf6xx
* must be followed by read from 0xf2ff/0xf6ff.
*/
if ((((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
stb0899_read_reg(state, (reg | 0x00ff));
if (ret != 1) {
if (ret != -ERESTARTSYS)
dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d",
reg, data[0], count, ret);
return ret < 0 ? ret : -EREMOTEIO;
}
return 0;
}
int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data)
{
return stb0899_write_regs(state, reg, &data, 1);
}
/*
* stb0899_get_mclk
* Get STB0899 master clock frequency
* ExtClk: external clock frequency (Hz)
*/
static u32 stb0899_get_mclk(struct stb0899_state *state)
{
u32 mclk = 0, div = 0;
div = stb0899_read_reg(state, STB0899_NCOARSE);
mclk = (div + 1) * state->config->xtal_freq / 6;
dprintk(state->verbose, FE_DEBUG, 1, "div=%d, mclk=%d", div, mclk);
return mclk;
}
/*
* stb0899_set_mclk
* Set STB0899 master Clock frequency
* Mclk: demodulator master clock
* ExtClk: external clock frequency (Hz)
*/
static void stb0899_set_mclk(struct stb0899_state *state, u32 Mclk)
{
struct stb0899_internal *internal = &state->internal;
u8 mdiv = 0;
dprintk(state->verbose, FE_DEBUG, 1, "state->config=%p", state->config);
mdiv = ((6 * Mclk) / state->config->xtal_freq) - 1;
dprintk(state->verbose, FE_DEBUG, 1, "mdiv=%d", mdiv);
stb0899_write_reg(state, STB0899_NCOARSE, mdiv);
internal->master_clk = stb0899_get_mclk(state);
dprintk(state->verbose, FE_DEBUG, 1, "MasterCLOCK=%d", internal->master_clk);
}
static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable)
{
struct stb0899_config *config = state->config;
const struct stb0899_postproc *postproc = config->postproc;
/* post process event */
if (postproc) {
if (enable) {
if (postproc[ctl].level == STB0899_GPIOPULLUP)
stb0899_write_reg(state, postproc[ctl].gpio, 0x02);
else
stb0899_write_reg(state, postproc[ctl].gpio, 0x82);
} else {
if (postproc[ctl].level == STB0899_GPIOPULLUP)
stb0899_write_reg(state, postproc[ctl].gpio, 0x82);
else
stb0899_write_reg(state, postproc[ctl].gpio, 0x02);
}
}
return 0;
}
static void stb0899_release(struct dvb_frontend *fe)
{
struct stb0899_state *state = fe->demodulator_priv;
dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend");
/* post process event */
stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
kfree(state);
}
/*
* stb0899_get_alpha
* return: rolloff
*/
static int stb0899_get_alpha(struct stb0899_state *state)
{
u8 mode_coeff;
mode_coeff = stb0899_read_reg(state, STB0899_DEMOD);
if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1)
return 20;
else
return 35;
}
/*
* stb0899_init_calc
*/
static void stb0899_init_calc(struct stb0899_state *state)
{
struct stb0899_internal *internal = &state->internal;
int master_clk;
u8 agc[2];
u32 reg;
/* Read registers (in burst mode) */
stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O */
/* Initial calculations */
master_clk = stb0899_get_mclk(state);
internal->t_agc1 = 0;
internal->t_agc2 = 0;
internal->master_clk = master_clk;
internal->mclk = master_clk / 65536L;
internal->rolloff = stb0899_get_alpha(state);
/* DVBS2 Initial calculations */
/* Set AGC value to the middle */
internal->agc_gain = 8154;
reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL);
STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain);
stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg);
reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA);
internal->rrc_alpha = STB0899_GETFIELD(RRC_ALPHA, reg);
internal->center_freq = 0;
internal->av_frame_coarse = 10;
internal->av_frame_fine = 20;
internal->step_size = 2;
/*
if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO))
pParams->IQLocked = 0;
else
pParams->IQLocked = 1;
*/
}
static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout)
{
u8 reg = 0;
unsigned long start = jiffies;
while (1) {
reg = stb0899_read_reg(state, STB0899_DISSTATUS);
if (!STB0899_GETFIELD(FIFOFULL, reg))
break;
if ((jiffies - start) > timeout) {
dprintk(state->verbose, FE_ERROR, 1, "timed out !!");
return -ETIMEDOUT;
}
}
return 0;
}
static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd)
{
struct stb0899_state *state = fe->demodulator_priv;
u8 reg, i;
if (cmd->msg_len > 8)
return -EINVAL;
/* enable FIFO precharge */
reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1);
stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
for (i = 0; i < cmd->msg_len; i++) {
/* wait for FIFO empty */
if (stb0899_wait_diseqc_fifo_empty(state, 100) < 0)
return -ETIMEDOUT;
stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]);
}
reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0);
stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
msleep(100);
return 0;
}
static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout)
{
u8 reg = 0;
unsigned long start = jiffies;
while (!STB0899_GETFIELD(RXEND, reg)) {
reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
if (jiffies - start > timeout) {
dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
return -ETIMEDOUT;
}
msleep(10);
}
return 0;
}
static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply)
{
struct stb0899_state *state = fe->demodulator_priv;
u8 reg, length = 0, i;
int result;
if (stb0899_wait_diseqc_rxidle(state, 100) < 0)
return -ETIMEDOUT;
reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
if (STB0899_GETFIELD(RXEND, reg)) {
reg = stb0899_read_reg(state, STB0899_DISRX_ST1);
length = STB0899_GETFIELD(FIFOBYTENBR, reg);
if (length > sizeof (reply->msg)) {
result = -EOVERFLOW;
goto exit;
}
reply->msg_len = length;
/* extract data */
for (i = 0; i < length; i++)
reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO);
}
return 0;
exit:
return result;
}
static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout)
{
u8 reg = 0;
unsigned long start = jiffies;
while (!STB0899_GETFIELD(TXIDLE, reg)) {
reg = stb0899_read_reg(state, STB0899_DISSTATUS);
if (jiffies - start > timeout) {
dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
return -ETIMEDOUT;
}
msleep(10);
}
return 0;
}
static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst)
{
struct stb0899_state *state = fe->demodulator_priv;
u8 reg, old_state;
/* wait for diseqc idle */
if (stb0899_wait_diseqc_txidle(state, 100) < 0)
return -ETIMEDOUT;
reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
old_state = reg;
/* set to burst mode */
STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03);
STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01);
stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
switch (burst) {
case SEC_MINI_A:
/* unmodulated */
stb0899_write_reg(state, STB0899_DISFIFO, 0x00);
break;
case SEC_MINI_B:
/* modulated */
stb0899_write_reg(state, STB0899_DISFIFO, 0xff);
break;
}
reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00);
stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
/* wait for diseqc idle */
if (stb0899_wait_diseqc_txidle(state, 100) < 0)
return -ETIMEDOUT;
/* restore state */
stb0899_write_reg(state, STB0899_DISCNTRL1, old_state);
return 0;
}
static int stb0899_diseqc_init(struct stb0899_state *state)
{
/*
struct dvb_diseqc_slave_reply rx_data;
*/
u8 f22_tx, reg;
u32 mclk, tx_freq = 22000;/* count = 0, i; */
reg = stb0899_read_reg(state, STB0899_DISCNTRL2);
STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0);
stb0899_write_reg(state, STB0899_DISCNTRL2, reg);
/* disable Tx spy */
reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1);
stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0);
stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
mclk = stb0899_get_mclk(state);
f22_tx = mclk / (tx_freq * 32);
stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq */
state->rx_freq = 20000;
return 0;
}
static int stb0899_sleep(struct dvb_frontend *fe)
{
struct stb0899_state *state = fe->demodulator_priv;
/*
u8 reg;
*/
dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))");
/* post process event */
stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
return 0;
}
static int stb0899_wakeup(struct dvb_frontend *fe)
{
int rc;
struct stb0899_state *state = fe->demodulator_priv;
if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI)))
return rc;
/* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */
if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00)))
return rc;
if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00)))
return rc;
/* post process event */
stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1);
return 0;
}
static int stb0899_init(struct dvb_frontend *fe)
{
int i;
struct stb0899_state *state = fe->demodulator_priv;
struct stb0899_config *config = state->config;
dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... ");
/* init device */
dprintk(state->verbose, FE_DEBUG, 1, "init device");
for (i = 0; config->init_dev[i].address != 0xffff; i++)
stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data);
dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod");
/* init S2 demod */
for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++)
stb0899_write_s2reg(state, STB0899_S2DEMOD,
config->init_s2_demod[i].base_address,
config->init_s2_demod[i].offset,
config->init_s2_demod[i].data);
dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod");
/* init S1 demod */
for (i = 0; config->init_s1_demod[i].address != 0xffff; i++)
stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data);
dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC");
/* init S2 fec */
for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++)
stb0899_write_s2reg(state, STB0899_S2FEC,
config->init_s2_fec[i].base_address,
config->init_s2_fec[i].offset,
config->init_s2_fec[i].data);
dprintk(state->verbose, FE_DEBUG, 1, "init TST");
/* init test */
for (i = 0; config->init_tst[i].address != 0xffff; i++)
stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data);
stb0899_init_calc(state);
stb0899_diseqc_init(state);
return 0;
}
static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val)
{
int res = 0;
int min = 0, med;
if (val < tab[min].read)
res = tab[min].real;
else if (val >= tab[max].read)
res = tab[max].real;
else {
while ((max - min) > 1) {
med = (max + min) / 2;
if (val >= tab[min].read && val < tab[med].read)
max = med;
else
min = med;
}
res = ((val - tab[min].read) *
(tab[max].real - tab[min].real) /
(tab[max].read - tab[min].read)) +
tab[min].real;
}
return res;
}
static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
struct stb0899_state *state = fe->demodulator_priv;
struct stb0899_internal *internal = &state->internal;
int val;
u32 reg;
*strength = 0;
switch (state->delsys) {
case SYS_DVBS:
case SYS_DSS:
if (internal->lock) {
reg = stb0899_read_reg(state, STB0899_VSTATUS);
if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
reg = stb0899_read_reg(state, STB0899_AGCIQIN);
val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg);
*strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val);
*strength += 750;
dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm",
val & 0xff, *strength);
}
}
break;
case SYS_DVBS2:
if (internal->lock) {
reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_GAIN);
val = STB0899_GETFIELD(IF_AGC_GAIN, reg);
*strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val);
*strength += 950;
dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm",
val & 0x3fff, *strength);
}
break;
default:
dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
return -EINVAL;
}
return 0;
}
static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct stb0899_state *state = fe->demodulator_priv;
struct stb0899_internal *internal = &state->internal;
unsigned int val, quant, quantn = -1, est, estn = -1;
u8 buf[2];
u32 reg;
*snr = 0;
reg = stb0899_read_reg(state, STB0899_VSTATUS);
switch (state->delsys) {
case SYS_DVBS:
case SYS_DSS:
if (internal->lock) {
if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
stb0899_read_regs(state, STB0899_NIRM, buf, 2);
val = MAKEWORD16(buf[0], buf[1]);
*snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val);
dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n",
buf[0], buf[1], val, *snr);
}
}
break;
case SYS_DVBS2:
if (internal->lock) {
reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1);
quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg);
reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2);
est = STB0899_GETFIELD(ESN0_EST, reg);
if (est == 1)
val = 301; /* C/N = 30.1 dB */
else if (est == 2)
val = 270; /* C/N = 27.0 dB */
else {
/* quantn = 100 * log(quant^2) */
quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100);
/* estn = 100 * log(est) */
estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est);
/* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */
val = (quantn - estn) / 10;
}
*snr = val;
dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm",
quant, quantn, est, estn, val);
}
break;
default:
dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
return -EINVAL;
}
return 0;
}
static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct stb0899_state *state = fe->demodulator_priv;
struct stb0899_internal *internal = &state->internal;
u8 reg;
*status = 0;
switch (state->delsys) {
case SYS_DVBS:
case SYS_DSS:
dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS");
if (internal->lock) {
reg = stb0899_read_reg(state, STB0899_VSTATUS);
if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK");
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
reg = stb0899_read_reg(state, STB0899_PLPARM);
if (STB0899_GETFIELD(VITCURPUN, reg)) {
dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC");
*status |= FE_HAS_VITERBI | FE_HAS_SYNC;
/* post process event */
stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
}
}
}
break;
case SYS_DVBS2:
dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2");
if (internal->lock) {
reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2);
if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) {
*status |= FE_HAS_CARRIER;
dprintk(state->verbose, FE_DEBUG, 1,
"UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER");
reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1);
if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) {
*status |= FE_HAS_LOCK;
dprintk(state->verbose, FE_DEBUG, 1,
"Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK");
}
if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) {
*status |= FE_HAS_VITERBI;
dprintk(state->verbose, FE_DEBUG, 1,
"Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI");
}
if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) {
*status |= FE_HAS_SYNC;
dprintk(state->verbose, FE_DEBUG, 1,
"Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC");
/* post process event */
stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
}
}
}
break;
default:
dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
return -EINVAL;
}
return 0;
}
/*
* stb0899_get_error
* viterbi error for DVB-S/DSS
* packet error for DVB-S2
* Bit Error Rate or Packet Error Rate * 10 ^ 7
*/
static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber)
{
struct stb0899_state *state = fe->demodulator_priv;
struct stb0899_internal *internal = &state->internal;
u8 lsb, msb;
*ber = 0;
switch (state->delsys) {
case SYS_DVBS:
case SYS_DSS:
if (internal->lock) {
lsb = stb0899_read_reg(state, STB0899_ECNT1L);
msb = stb0899_read_reg(state, STB0899_ECNT1M);
*ber = MAKEWORD16(msb, lsb);
/* Viterbi Check */
if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) {
/* Error Rate */
*ber *= 9766;
/* ber = ber * 10 ^ 7 */
*ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
*ber /= 8;
}
}
break;
case SYS_DVBS2:
if (internal->lock) {
lsb = stb0899_read_reg(state, STB0899_ECNT1L);
msb = stb0899_read_reg(state, STB0899_ECNT1M);
*ber = MAKEWORD16(msb, lsb);
/* ber = ber * 10 ^ 7 */
*ber *= 10000000;
*ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
}
break;
default:
dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
return -EINVAL;
}
return 0;
}
static int stb0899_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
{
struct stb0899_state *state = fe->demodulator_priv;
switch (voltage) {
case SEC_VOLTAGE_13:
stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00);
break;
case SEC_VOLTAGE_18:
stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02);
stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
break;
case SEC_VOLTAGE_OFF:
stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82);
stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
break;
default:
return -EINVAL;
}
return 0;
}
static int stb0899_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
{
struct stb0899_state *state = fe->demodulator_priv;
struct stb0899_internal *internal = &state->internal;
u8 div, reg;
/* wait for diseqc idle */
if (stb0899_wait_diseqc_txidle(state, 100) < 0)
return -ETIMEDOUT;
switch (tone) {
case SEC_TONE_ON:
div = (internal->master_clk / 100) / 5632;
div = (div + 5) / 10;
stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66);
reg = stb0899_read_reg(state, STB0899_ACRPRESC);
STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03);
stb0899_write_reg(state, STB0899_ACRPRESC, reg);
stb0899_write_reg(state, STB0899_ACRDIV1, div);
break;
case SEC_TONE_OFF:
stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20);
break;
default:
return -EINVAL;
}
return 0;
}
int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
{
int i2c_stat;
struct stb0899_state *state = fe->demodulator_priv;
i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT);
if (i2c_stat < 0)
goto err;
if (enable) {
dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ...");
i2c_stat |= STB0899_I2CTON;
if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
goto err;
} else {
dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ...");
i2c_stat &= ~STB0899_I2CTON;
if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
goto err;
}
return 0;
err:
dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed");
return -EREMOTEIO;
}
static inline void CONVERT32(u32 x, char *str)
{
*str++ = (x >> 24) & 0xff;
*str++ = (x >> 16) & 0xff;
*str++ = (x >> 8) & 0xff;
*str++ = (x >> 0) & 0xff;
*str = '\0';
}
int stb0899_get_dev_id(struct stb0899_state *state)
{
u8 chip_id, release;
u16 id;
u32 demod_ver = 0, fec_ver = 0;
char demod_str[5] = { 0 };
char fec_str[5] = { 0 };
id = stb0899_read_reg(state, STB0899_DEV_ID);
dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id);
chip_id = STB0899_GETFIELD(CHIP_ID, id);
release = STB0899_GETFIELD(CHIP_REL, id);
dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]",
chip_id, release);
CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str);
demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID);
dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver);
CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str);
fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG);
if (! (chip_id > 0)) {
dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899");
return -ENODEV;
}
dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver);
return 0;
}
static void stb0899_set_delivery(struct stb0899_state *state)
{
u8 reg;
u8 stop_clk[2];
stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1);
stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2);
switch (state->delsys) {
case SYS_DVBS:
dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S");
/* FECM/Viterbi ON */
reg = stb0899_read_reg(state, STB0899_FECM);
STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
stb0899_write_reg(state, STB0899_FECM, reg);
stb0899_write_reg(state, STB0899_RSULC, 0xb1);
stb0899_write_reg(state, STB0899_TSULC, 0x40);
stb0899_write_reg(state, STB0899_RSLLC, 0x42);
stb0899_write_reg(state, STB0899_TSLPL, 0x12);
reg = stb0899_read_reg(state, STB0899_TSTRES);
STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
stb0899_write_reg(state, STB0899_TSTRES, reg);
STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1);
STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
break;
case SYS_DVBS2:
/* FECM/Viterbi OFF */
reg = stb0899_read_reg(state, STB0899_FECM);
STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0);
stb0899_write_reg(state, STB0899_FECM, reg);
stb0899_write_reg(state, STB0899_RSULC, 0xb1);
stb0899_write_reg(state, STB0899_TSULC, 0x42);
stb0899_write_reg(state, STB0899_RSLLC, 0x40);
stb0899_write_reg(state, STB0899_TSLPL, 0x02);
reg = stb0899_read_reg(state, STB0899_TSTRES);
STB0899_SETFIELD_VAL(FRESLDPC, reg, 0);
stb0899_write_reg(state, STB0899_TSTRES, reg);
STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0);
STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0);
STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0);
STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0);
STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0);
STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0);
break;
case SYS_DSS:
/* FECM/Viterbi ON */
reg = stb0899_read_reg(state, STB0899_FECM);
STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1);
STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
stb0899_write_reg(state, STB0899_FECM, reg);
stb0899_write_reg(state, STB0899_RSULC, 0xa1);
stb0899_write_reg(state, STB0899_TSULC, 0x61);
stb0899_write_reg(state, STB0899_RSLLC, 0x42);
reg = stb0899_read_reg(state, STB0899_TSTRES);
STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
stb0899_write_reg(state, STB0899_TSTRES, reg);
STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
break;
default:
dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
break;
}
STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0);
stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2);
}
/*
* stb0899_set_iterations
* set the LDPC iteration scale function
*/
static void stb0899_set_iterations(struct stb0899_state *state)
{
struct stb0899_internal *internal = &state->internal;
struct stb0899_config *config = state->config;
s32 iter_scale;
u32 reg;
iter_scale = 17 * (internal->master_clk / 1000);
iter_scale += 410000;
iter_scale /= (internal->srate / 1000000);
iter_scale /= 1000;
if (iter_scale > config->ldpc_max_iter)
iter_scale = config->ldpc_max_iter;
reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER);
STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale);
stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
}
static enum dvbfe_search stb0899_search(struct dvb_frontend *fe)
{
struct stb0899_state *state = fe->demodulator_priv;
struct stb0899_params *i_params = &state->params;
struct stb0899_internal *internal = &state->internal;
struct stb0899_config *config = state->config;
struct dtv_frontend_properties *props = &fe->dtv_property_cache;
u32 SearchRange, gain;
i_params->freq = props->frequency;
i_params->srate = props->symbol_rate;
state->delsys = props->delivery_system;
dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys);
SearchRange = 10000000;
dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate);
/* checking Search Range is meaningless for a fixed 3 Mhz */
if (INRANGE(i_params->srate, 1000000, 45000000)) {
dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE");
stb0899_set_delivery(state);
if (state->config->tuner_set_rfsiggain) {
if (internal->srate > 15000000)
gain = 8; /* 15Mb < srate < 45Mb, gain = 8dB */
else if (internal->srate > 5000000)
gain = 12; /* 5Mb < srate < 15Mb, gain = 12dB */
else
gain = 14; /* 1Mb < srate < 5Mb, gain = 14db */
state->config->tuner_set_rfsiggain(fe, gain);
}
if (i_params->srate <= 5000000)
stb0899_set_mclk(state, config->lo_clk);
else
stb0899_set_mclk(state, config->hi_clk);
switch (state->delsys) {
case SYS_DVBS:
case SYS_DSS:
dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system");
internal->freq = i_params->freq;
internal->srate = i_params->srate;
/*
* search = user search range +
* 500Khz +
* 2 * Tuner_step_size +
* 10% of the symbol rate
*/
internal->srch_range = SearchRange + 1500000 + (i_params->srate / 5);
internal->derot_percent = 30;
/* What to do for tuners having no bandwidth setup ? */
/* enable tuner I/O */
stb0899_i2c_gate_ctrl(&state->frontend, 1);
if (state->config->tuner_set_bandwidth)
state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10);
if (state->config->tuner_get_bandwidth)
state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
/* disable tuner I/O */
stb0899_i2c_gate_ctrl(&state->frontend, 0);
/* Set DVB-S1 AGC */
stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11);
/* Run the search algorithm */
dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo ..");
if (stb0899_dvbs_algo(state) == RANGEOK) {
internal->lock = 1;
dprintk(state->verbose, FE_DEBUG, 1,
"-------------------------------------> DVB-S LOCK !");
// stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors */
// internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
// internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
// dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status);
// dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl);
return DVBFE_ALGO_SEARCH_SUCCESS;
} else {
internal->lock = 0;
return DVBFE_ALGO_SEARCH_FAILED;
}
break;
case SYS_DVBS2:
internal->freq = i_params->freq;
internal->srate = i_params->srate;
internal->srch_range = SearchRange;
/* enable tuner I/O */
stb0899_i2c_gate_ctrl(&state->frontend, 1);
if (state->config->tuner_set_bandwidth)
state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange));
if (state->config->tuner_get_bandwidth)
state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
/* disable tuner I/O */
stb0899_i2c_gate_ctrl(&state->frontend, 0);
// pParams->SpectralInv = pSearch->IQ_Inversion;
/* Set DVB-S2 AGC */
stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c);
/* Set IterScale =f(MCLK,SYMB) */
stb0899_set_iterations(state);
/* Run the search algorithm */
dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo ..");
if (stb0899_dvbs2_algo(state) == DVBS2_FEC_LOCK) {
internal->lock = 1;
dprintk(state->verbose, FE_DEBUG, 1,
"-------------------------------------> DVB-S2 LOCK !");
// stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors */
// internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
// internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
return DVBFE_ALGO_SEARCH_SUCCESS;
} else {
internal->lock = 0;
return DVBFE_ALGO_SEARCH_FAILED;
}
break;
default:
dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
return DVBFE_ALGO_SEARCH_INVALID;
}
}
return DVBFE_ALGO_SEARCH_ERROR;
}
static int stb0899_get_frontend(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
struct stb0899_state *state = fe->demodulator_priv;
struct stb0899_internal *internal = &state->internal;
dprintk(state->verbose, FE_DEBUG, 1, "Get params");
p->symbol_rate = internal->srate;
return 0;
}
static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe)
{
return DVBFE_ALGO_CUSTOM;
}
static struct dvb_frontend_ops stb0899_ops = {
.delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS },
.info = {
.name = "STB0899 Multistandard",
.frequency_min = 950000,
.frequency_max = 2150000,
.frequency_stepsize = 0,
.frequency_tolerance = 0,
.symbol_rate_min = 5000000,
.symbol_rate_max = 45000000,
.caps = FE_CAN_INVERSION_AUTO |
FE_CAN_FEC_AUTO |
FE_CAN_2G_MODULATION |
FE_CAN_QPSK
},
.release = stb0899_release,
.init = stb0899_init,
.sleep = stb0899_sleep,
// .wakeup = stb0899_wakeup,
.i2c_gate_ctrl = stb0899_i2c_gate_ctrl,
.get_frontend_algo = stb0899_frontend_algo,
.search = stb0899_search,
.get_frontend = stb0899_get_frontend,
.read_status = stb0899_read_status,
.read_snr = stb0899_read_snr,
.read_signal_strength = stb0899_read_signal_strength,
.read_ber = stb0899_read_ber,
.set_voltage = stb0899_set_voltage,
.set_tone = stb0899_set_tone,
.diseqc_send_master_cmd = stb0899_send_diseqc_msg,
.diseqc_recv_slave_reply = stb0899_recv_slave_reply,
.diseqc_send_burst = stb0899_send_diseqc_burst,
};
struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c)
{
struct stb0899_state *state = NULL;
enum stb0899_inversion inversion;
state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL);
if (state == NULL)
goto error;
inversion = config->inversion;
state->verbose = &verbose;
state->config = config;
state->i2c = i2c;
state->frontend.ops = stb0899_ops;
state->frontend.demodulator_priv = state;
state->internal.inversion = inversion;
stb0899_wakeup(&state->frontend);
if (stb0899_get_dev_id(state) == -ENODEV) {
printk("%s: Exiting .. !\n", __func__);
goto error;
}
printk("%s: Attaching STB0899 \n", __func__);
return &state->frontend;
error:
kfree(state);
return NULL;
}
EXPORT_SYMBOL(stb0899_attach);
MODULE_PARM_DESC(verbose, "Set Verbosity level");
MODULE_AUTHOR("Manu Abraham");
MODULE_DESCRIPTION("STB0899 Multi-Std frontend");
MODULE_LICENSE("GPL");
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