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linux-next/drivers/media/dvb-frontends/stb0899_drv.c
Mauro Carvalho Chehab ba47464234 [media] stb0899_drv: Don't use dynamic static allocation 
Dynamic static allocation is evil, as Kernel stack is too low, and
compilation complains about it on some archs:
	drivers/media/dvb-frontends/stb0899_drv.c:540:1: warning: 'stb0899_write_regs' uses dynamic stack allocation [enabled by default]
Instead, let's enforce a limit for the buffer. Considering that I2C
transfers are generally limited, and that devices used on USB has a
max data length of 64 bytes for	the control URBs.
So, it seem safe to use 64 bytes as the hard limit for all those devices.
 On most cases, the limit is a way lower than that, but	this limit
is small enough to not affect the Kernel stack, and it is a no brain
limit, as using smaller ones would require to either carefully each
driver or to take a look on each datasheet.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-08 09:45:39 -02:00

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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"
/* Max transfer size done by I2C transfer functions */
#define MAX_XFER_SIZE 64
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[MAX_XFER_SIZE];
struct i2c_msg i2c_msg = {
.addr = state->config->demod_address,
.flags = 0,
.buf = buf,
.len = 2 + count
};
if (2 + count > sizeof(buf)) {
printk(KERN_WARNING
"%s: i2c wr reg=%04x: len=%d is too big!\n",
KBUILD_MODNAME, reg, count);
return -EINVAL;
}
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';
}
static 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;
p->frequency = internal->freq;
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;
state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL);
if (state == NULL)
goto error;
state->verbose = &verbose;
state->config = config;
state->i2c = i2c;
state->frontend.ops = stb0899_ops;
state->frontend.demodulator_priv = state;
/* use configured inversion as default -- we'll later autodetect inversion */
state->internal.inversion = config->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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