mirror of https://gitee.com/openkylin/linux.git
1308 lines
29 KiB
C
1308 lines
29 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for Silicon Labs Si2161 DVB-T and Si2165 DVB-C/-T Demodulator
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*
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* Copyright (C) 2013-2017 Matthias Schwarzott <zzam@gentoo.org>
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*
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* References:
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* http://www.silabs.com/Support%20Documents/TechnicalDocs/Si2165-short.pdf
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*/
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <linux/firmware.h>
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#include <linux/regmap.h>
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#include <media/dvb_frontend.h>
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#include <media/dvb_math.h>
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#include "si2165_priv.h"
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#include "si2165.h"
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/*
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* Hauppauge WinTV-HVR-930C-HD B130 / PCTV QuatroStick 521e 1113xx
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* uses 16 MHz xtal
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*
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* Hauppauge WinTV-HVR-930C-HD B131 / PCTV QuatroStick 522e 1114xx
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* uses 24 MHz clock provided by tuner
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*/
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struct si2165_state {
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struct i2c_client *client;
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struct regmap *regmap;
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struct dvb_frontend fe;
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struct si2165_config config;
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u8 chip_revcode;
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u8 chip_type;
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/* calculated by xtal and div settings */
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u32 fvco_hz;
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u32 sys_clk;
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u32 adc_clk;
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/* DVBv3 stats */
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u64 ber_prev;
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bool has_dvbc;
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bool has_dvbt;
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bool firmware_loaded;
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};
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static int si2165_write(struct si2165_state *state, const u16 reg,
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const u8 *src, const int count)
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{
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int ret;
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dev_dbg(&state->client->dev, "i2c write: reg: 0x%04x, data: %*ph\n",
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reg, count, src);
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ret = regmap_bulk_write(state->regmap, reg, src, count);
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if (ret)
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dev_err(&state->client->dev, "%s: ret == %d\n", __func__, ret);
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return ret;
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}
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static int si2165_read(struct si2165_state *state,
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const u16 reg, u8 *val, const int count)
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{
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int ret = regmap_bulk_read(state->regmap, reg, val, count);
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if (ret) {
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dev_err(&state->client->dev, "%s: error (addr %02x reg %04x error (ret == %i)\n",
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__func__, state->config.i2c_addr, reg, ret);
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return ret;
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}
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dev_dbg(&state->client->dev, "i2c read: reg: 0x%04x, data: %*ph\n",
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reg, count, val);
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return 0;
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}
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static int si2165_readreg8(struct si2165_state *state,
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const u16 reg, u8 *val)
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{
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unsigned int val_tmp;
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int ret = regmap_read(state->regmap, reg, &val_tmp);
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*val = (u8)val_tmp;
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dev_dbg(&state->client->dev, "reg read: R(0x%04x)=0x%02x\n", reg, *val);
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return ret;
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}
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static int si2165_readreg16(struct si2165_state *state,
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const u16 reg, u16 *val)
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{
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u8 buf[2];
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int ret = si2165_read(state, reg, buf, 2);
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*val = buf[0] | buf[1] << 8;
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dev_dbg(&state->client->dev, "reg read: R(0x%04x)=0x%04x\n", reg, *val);
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return ret;
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}
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static int si2165_readreg24(struct si2165_state *state,
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const u16 reg, u32 *val)
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{
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u8 buf[3];
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int ret = si2165_read(state, reg, buf, 3);
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*val = buf[0] | buf[1] << 8 | buf[2] << 16;
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dev_dbg(&state->client->dev, "reg read: R(0x%04x)=0x%06x\n", reg, *val);
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return ret;
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}
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static int si2165_writereg8(struct si2165_state *state, const u16 reg, u8 val)
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{
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return regmap_write(state->regmap, reg, val);
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}
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static int si2165_writereg16(struct si2165_state *state, const u16 reg, u16 val)
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{
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u8 buf[2] = { val & 0xff, (val >> 8) & 0xff };
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return si2165_write(state, reg, buf, 2);
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}
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static int si2165_writereg24(struct si2165_state *state, const u16 reg, u32 val)
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{
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u8 buf[3] = { val & 0xff, (val >> 8) & 0xff, (val >> 16) & 0xff };
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return si2165_write(state, reg, buf, 3);
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}
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static int si2165_writereg32(struct si2165_state *state, const u16 reg, u32 val)
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{
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u8 buf[4] = {
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val & 0xff,
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(val >> 8) & 0xff,
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(val >> 16) & 0xff,
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(val >> 24) & 0xff
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};
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return si2165_write(state, reg, buf, 4);
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}
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static int si2165_writereg_mask8(struct si2165_state *state, const u16 reg,
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u8 val, u8 mask)
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{
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if (mask != 0xff) {
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u8 tmp;
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int ret = si2165_readreg8(state, reg, &tmp);
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if (ret < 0)
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return ret;
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val &= mask;
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tmp &= ~mask;
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val |= tmp;
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}
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return si2165_writereg8(state, reg, val);
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}
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#define REG16(reg, val) \
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{ (reg), (val) & 0xff }, \
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{ (reg) + 1, (val) >> 8 & 0xff }
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struct si2165_reg_value_pair {
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u16 reg;
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u8 val;
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};
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static int si2165_write_reg_list(struct si2165_state *state,
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const struct si2165_reg_value_pair *regs,
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int count)
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{
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int i;
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int ret;
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for (i = 0; i < count; i++) {
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ret = si2165_writereg8(state, regs[i].reg, regs[i].val);
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if (ret < 0)
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return ret;
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}
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return 0;
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}
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static int si2165_get_tune_settings(struct dvb_frontend *fe,
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struct dvb_frontend_tune_settings *s)
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{
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s->min_delay_ms = 1000;
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return 0;
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}
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static int si2165_init_pll(struct si2165_state *state)
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{
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u32 ref_freq_hz = state->config.ref_freq_hz;
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u8 divr = 1; /* 1..7 */
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u8 divp = 1; /* only 1 or 4 */
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u8 divn = 56; /* 1..63 */
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u8 divm = 8;
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u8 divl = 12;
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u8 buf[4];
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/*
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* hardcoded values can be deleted if calculation is verified
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* or it yields the same values as the windows driver
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*/
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switch (ref_freq_hz) {
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case 16000000u:
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divn = 56;
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break;
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case 24000000u:
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divr = 2;
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divp = 4;
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divn = 19;
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break;
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default:
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/* ref_freq / divr must be between 4 and 16 MHz */
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if (ref_freq_hz > 16000000u)
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divr = 2;
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/*
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* now select divn and divp such that
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* fvco is in 1624..1824 MHz
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*/
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if (1624000000u * divr > ref_freq_hz * 2u * 63u)
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divp = 4;
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/* is this already correct regarding rounding? */
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divn = 1624000000u * divr / (ref_freq_hz * 2u * divp);
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break;
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}
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/* adc_clk and sys_clk depend on xtal and pll settings */
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state->fvco_hz = ref_freq_hz / divr
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* 2u * divn * divp;
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state->adc_clk = state->fvco_hz / (divm * 4u);
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state->sys_clk = state->fvco_hz / (divl * 2u);
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/* write all 4 pll registers 0x00a0..0x00a3 at once */
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buf[0] = divl;
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buf[1] = divm;
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buf[2] = (divn & 0x3f) | ((divp == 1) ? 0x40 : 0x00) | 0x80;
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buf[3] = divr;
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return si2165_write(state, REG_PLL_DIVL, buf, 4);
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}
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static int si2165_adjust_pll_divl(struct si2165_state *state, u8 divl)
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{
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state->sys_clk = state->fvco_hz / (divl * 2u);
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return si2165_writereg8(state, REG_PLL_DIVL, divl);
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}
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static u32 si2165_get_fe_clk(struct si2165_state *state)
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{
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/* assume Oversampling mode Ovr4 is used */
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return state->adc_clk;
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}
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static int si2165_wait_init_done(struct si2165_state *state)
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{
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int ret;
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u8 val = 0;
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int i;
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for (i = 0; i < 3; ++i) {
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ret = si2165_readreg8(state, REG_INIT_DONE, &val);
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if (ret < 0)
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return ret;
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if (val == 0x01)
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return 0;
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usleep_range(1000, 50000);
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}
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dev_err(&state->client->dev, "init_done was not set\n");
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return -EINVAL;
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}
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static int si2165_upload_firmware_block(struct si2165_state *state,
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const u8 *data, u32 len, u32 *poffset,
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u32 block_count)
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{
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int ret;
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u8 buf_ctrl[4] = { 0x00, 0x00, 0x00, 0xc0 };
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u8 wordcount;
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u32 cur_block = 0;
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u32 offset = poffset ? *poffset : 0;
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if (len < 4)
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return -EINVAL;
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if (len % 4 != 0)
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return -EINVAL;
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dev_dbg(&state->client->dev,
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"fw load: %s: called with len=0x%x offset=0x%x blockcount=0x%x\n",
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__func__, len, offset, block_count);
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while (offset + 12 <= len && cur_block < block_count) {
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dev_dbg(&state->client->dev,
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"fw load: %s: in while len=0x%x offset=0x%x cur_block=0x%x blockcount=0x%x\n",
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__func__, len, offset, cur_block, block_count);
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wordcount = data[offset];
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if (wordcount < 1 || data[offset + 1] ||
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data[offset + 2] || data[offset + 3]) {
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dev_warn(&state->client->dev,
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"bad fw data[0..3] = %*ph\n",
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4, data);
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return -EINVAL;
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}
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if (offset + 8 + wordcount * 4 > len) {
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dev_warn(&state->client->dev,
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"len is too small for block len=%d, wordcount=%d\n",
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len, wordcount);
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return -EINVAL;
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}
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buf_ctrl[0] = wordcount - 1;
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ret = si2165_write(state, REG_DCOM_CONTROL_BYTE, buf_ctrl, 4);
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if (ret < 0)
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goto error;
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ret = si2165_write(state, REG_DCOM_ADDR, data + offset + 4, 4);
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if (ret < 0)
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goto error;
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offset += 8;
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while (wordcount > 0) {
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ret = si2165_write(state, REG_DCOM_DATA,
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data + offset, 4);
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if (ret < 0)
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goto error;
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wordcount--;
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offset += 4;
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}
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cur_block++;
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}
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dev_dbg(&state->client->dev,
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"fw load: %s: after while len=0x%x offset=0x%x cur_block=0x%x blockcount=0x%x\n",
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__func__, len, offset, cur_block, block_count);
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if (poffset)
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*poffset = offset;
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dev_dbg(&state->client->dev,
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"fw load: %s: returned offset=0x%x\n",
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__func__, offset);
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return 0;
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error:
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return ret;
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}
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static int si2165_upload_firmware(struct si2165_state *state)
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{
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/* int ret; */
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u8 val[3];
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u16 val16;
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int ret;
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const struct firmware *fw = NULL;
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u8 *fw_file;
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const u8 *data;
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u32 len;
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u32 offset;
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u8 patch_version;
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u8 block_count;
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u16 crc_expected;
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switch (state->chip_revcode) {
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case 0x03: /* revision D */
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fw_file = SI2165_FIRMWARE_REV_D;
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break;
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default:
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dev_info(&state->client->dev, "no firmware file for revision=%d\n",
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state->chip_revcode);
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return 0;
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}
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/* request the firmware, this will block and timeout */
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ret = request_firmware(&fw, fw_file, &state->client->dev);
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if (ret) {
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dev_warn(&state->client->dev, "firmware file '%s' not found\n",
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fw_file);
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goto error;
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}
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data = fw->data;
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len = fw->size;
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dev_info(&state->client->dev, "downloading firmware from file '%s' size=%d\n",
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fw_file, len);
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if (len % 4 != 0) {
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dev_warn(&state->client->dev, "firmware size is not multiple of 4\n");
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ret = -EINVAL;
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goto error;
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}
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/* check header (8 bytes) */
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if (len < 8) {
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dev_warn(&state->client->dev, "firmware header is missing\n");
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ret = -EINVAL;
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goto error;
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}
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if (data[0] != 1 || data[1] != 0) {
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dev_warn(&state->client->dev, "firmware file version is wrong\n");
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ret = -EINVAL;
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goto error;
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}
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patch_version = data[2];
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block_count = data[4];
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crc_expected = data[7] << 8 | data[6];
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/* start uploading fw */
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/* boot/wdog status */
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ret = si2165_writereg8(state, REG_WDOG_AND_BOOT, 0x00);
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if (ret < 0)
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goto error;
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/* reset */
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ret = si2165_writereg8(state, REG_RST_ALL, 0x00);
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if (ret < 0)
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goto error;
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/* boot/wdog status */
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ret = si2165_readreg8(state, REG_WDOG_AND_BOOT, val);
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if (ret < 0)
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goto error;
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|
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/* enable reset on error */
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ret = si2165_readreg8(state, REG_EN_RST_ERROR, val);
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if (ret < 0)
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goto error;
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ret = si2165_readreg8(state, REG_EN_RST_ERROR, val);
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if (ret < 0)
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goto error;
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ret = si2165_writereg8(state, REG_EN_RST_ERROR, 0x02);
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if (ret < 0)
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goto error;
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|
|
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/* start right after the header */
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offset = 8;
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|
|
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dev_info(&state->client->dev, "%s: extracted patch_version=0x%02x, block_count=0x%02x, crc_expected=0x%04x\n",
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__func__, patch_version, block_count, crc_expected);
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|
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ret = si2165_upload_firmware_block(state, data, len, &offset, 1);
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if (ret < 0)
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goto error;
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|
|
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ret = si2165_writereg8(state, REG_PATCH_VERSION, patch_version);
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if (ret < 0)
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goto error;
|
|
|
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/* reset crc */
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ret = si2165_writereg8(state, REG_RST_CRC, 0x01);
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if (ret)
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goto error;
|
|
|
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ret = si2165_upload_firmware_block(state, data, len,
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&offset, block_count);
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if (ret < 0) {
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dev_err(&state->client->dev,
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"firmware could not be uploaded\n");
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goto error;
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}
|
|
|
|
/* read crc */
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ret = si2165_readreg16(state, REG_CRC, &val16);
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if (ret)
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goto error;
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|
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if (val16 != crc_expected) {
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dev_err(&state->client->dev,
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"firmware crc mismatch %04x != %04x\n",
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val16, crc_expected);
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ret = -EINVAL;
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goto error;
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}
|
|
|
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ret = si2165_upload_firmware_block(state, data, len, &offset, 5);
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if (ret)
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goto error;
|
|
|
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if (len != offset) {
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dev_err(&state->client->dev,
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"firmware len mismatch %04x != %04x\n",
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len, offset);
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ret = -EINVAL;
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goto error;
|
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}
|
|
|
|
/* reset watchdog error register */
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|
ret = si2165_writereg_mask8(state, REG_WDOG_AND_BOOT, 0x02, 0x02);
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if (ret < 0)
|
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goto error;
|
|
|
|
/* enable reset on error */
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ret = si2165_writereg_mask8(state, REG_EN_RST_ERROR, 0x01, 0x01);
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if (ret < 0)
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goto error;
|
|
|
|
dev_info(&state->client->dev, "fw load finished\n");
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|
|
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ret = 0;
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state->firmware_loaded = true;
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error:
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if (fw) {
|
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release_firmware(fw);
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fw = NULL;
|
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}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int si2165_init(struct dvb_frontend *fe)
|
|
{
|
|
int ret = 0;
|
|
struct si2165_state *state = fe->demodulator_priv;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
u8 val;
|
|
u8 patch_version = 0x00;
|
|
|
|
dev_dbg(&state->client->dev, "%s: called\n", __func__);
|
|
|
|
/* powerup */
|
|
ret = si2165_writereg8(state, REG_CHIP_MODE, state->config.chip_mode);
|
|
if (ret < 0)
|
|
goto error;
|
|
/* dsp_clock_enable */
|
|
ret = si2165_writereg8(state, REG_DSP_CLOCK, 0x01);
|
|
if (ret < 0)
|
|
goto error;
|
|
/* verify chip_mode */
|
|
ret = si2165_readreg8(state, REG_CHIP_MODE, &val);
|
|
if (ret < 0)
|
|
goto error;
|
|
if (val != state->config.chip_mode) {
|
|
dev_err(&state->client->dev, "could not set chip_mode\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* agc */
|
|
ret = si2165_writereg8(state, REG_AGC_IF_TRI, 0x00);
|
|
if (ret < 0)
|
|
goto error;
|
|
ret = si2165_writereg8(state, REG_AGC_IF_SLR, 0x01);
|
|
if (ret < 0)
|
|
goto error;
|
|
ret = si2165_writereg8(state, REG_AGC2_OUTPUT, 0x00);
|
|
if (ret < 0)
|
|
goto error;
|
|
ret = si2165_writereg8(state, REG_AGC2_CLKDIV, 0x07);
|
|
if (ret < 0)
|
|
goto error;
|
|
/* rssi pad */
|
|
ret = si2165_writereg8(state, REG_RSSI_PAD_CTRL, 0x00);
|
|
if (ret < 0)
|
|
goto error;
|
|
ret = si2165_writereg8(state, REG_RSSI_ENABLE, 0x00);
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
ret = si2165_init_pll(state);
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
/* enable chip_init */
|
|
ret = si2165_writereg8(state, REG_CHIP_INIT, 0x01);
|
|
if (ret < 0)
|
|
goto error;
|
|
/* set start_init */
|
|
ret = si2165_writereg8(state, REG_START_INIT, 0x01);
|
|
if (ret < 0)
|
|
goto error;
|
|
ret = si2165_wait_init_done(state);
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
/* disable chip_init */
|
|
ret = si2165_writereg8(state, REG_CHIP_INIT, 0x00);
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
/* ber_pkt - default 65535 */
|
|
ret = si2165_writereg16(state, REG_BER_PKT,
|
|
STATISTICS_PERIOD_PKT_COUNT);
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
ret = si2165_readreg8(state, REG_PATCH_VERSION, &patch_version);
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
ret = si2165_writereg8(state, REG_AUTO_RESET, 0x00);
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
/* dsp_addr_jump */
|
|
ret = si2165_writereg32(state, REG_ADDR_JUMP, 0xf4000000);
|
|
if (ret < 0)
|
|
goto error;
|
|
/* boot/wdog status */
|
|
ret = si2165_readreg8(state, REG_WDOG_AND_BOOT, &val);
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
if (patch_version == 0x00) {
|
|
ret = si2165_upload_firmware(state);
|
|
if (ret < 0)
|
|
goto error;
|
|
}
|
|
|
|
/* ts output config */
|
|
ret = si2165_writereg8(state, REG_TS_DATA_MODE, 0x20);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = si2165_writereg16(state, REG_TS_TRI, 0x00fe);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = si2165_writereg24(state, REG_TS_SLR, 0x555555);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = si2165_writereg8(state, REG_TS_CLK_MODE, 0x01);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = si2165_writereg8(state, REG_TS_PARALLEL_MODE, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
c = &state->fe.dtv_property_cache;
|
|
c->cnr.len = 1;
|
|
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
c->post_bit_error.len = 1;
|
|
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
c->post_bit_count.len = 1;
|
|
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
|
|
return 0;
|
|
error:
|
|
return ret;
|
|
}
|
|
|
|
static int si2165_sleep(struct dvb_frontend *fe)
|
|
{
|
|
int ret;
|
|
struct si2165_state *state = fe->demodulator_priv;
|
|
|
|
/* dsp clock disable */
|
|
ret = si2165_writereg8(state, REG_DSP_CLOCK, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
/* chip mode */
|
|
ret = si2165_writereg8(state, REG_CHIP_MODE, SI2165_MODE_OFF);
|
|
if (ret < 0)
|
|
return ret;
|
|
return 0;
|
|
}
|
|
|
|
static int si2165_read_status(struct dvb_frontend *fe, enum fe_status *status)
|
|
{
|
|
int ret;
|
|
u8 u8tmp;
|
|
u32 u32tmp;
|
|
struct si2165_state *state = fe->demodulator_priv;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
u32 delsys = c->delivery_system;
|
|
|
|
*status = 0;
|
|
|
|
switch (delsys) {
|
|
case SYS_DVBT:
|
|
/* check fast signal type */
|
|
ret = si2165_readreg8(state, REG_CHECK_SIGNAL, &u8tmp);
|
|
if (ret < 0)
|
|
return ret;
|
|
switch (u8tmp & 0x3) {
|
|
case 0: /* searching */
|
|
case 1: /* nothing */
|
|
break;
|
|
case 2: /* digital signal */
|
|
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
|
|
break;
|
|
}
|
|
break;
|
|
case SYS_DVBC_ANNEX_A:
|
|
/* check packet sync lock */
|
|
ret = si2165_readreg8(state, REG_PS_LOCK, &u8tmp);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (u8tmp & 0x01) {
|
|
*status |= FE_HAS_SIGNAL;
|
|
*status |= FE_HAS_CARRIER;
|
|
*status |= FE_HAS_VITERBI;
|
|
*status |= FE_HAS_SYNC;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* check fec_lock */
|
|
ret = si2165_readreg8(state, REG_FEC_LOCK, &u8tmp);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (u8tmp & 0x01) {
|
|
*status |= FE_HAS_SIGNAL;
|
|
*status |= FE_HAS_CARRIER;
|
|
*status |= FE_HAS_VITERBI;
|
|
*status |= FE_HAS_SYNC;
|
|
*status |= FE_HAS_LOCK;
|
|
}
|
|
|
|
/* CNR */
|
|
if (delsys == SYS_DVBC_ANNEX_A && *status & FE_HAS_VITERBI) {
|
|
ret = si2165_readreg24(state, REG_C_N, &u32tmp);
|
|
if (ret < 0)
|
|
return ret;
|
|
/*
|
|
* svalue =
|
|
* 1000 * c_n/dB =
|
|
* 1000 * 10 * log10(2^24 / regval) =
|
|
* 1000 * 10 * (log10(2^24) - log10(regval)) =
|
|
* 1000 * 10 * (intlog10(2^24) - intlog10(regval)) / 2^24
|
|
*
|
|
* intlog10(x) = log10(x) * 2^24
|
|
* intlog10(2^24) = log10(2^24) * 2^24 = 121210686
|
|
*/
|
|
u32tmp = (1000 * 10 * (121210686 - (u64)intlog10(u32tmp)))
|
|
>> 24;
|
|
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
|
|
c->cnr.stat[0].svalue = u32tmp;
|
|
} else
|
|
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
|
|
/* BER */
|
|
if (*status & FE_HAS_VITERBI) {
|
|
if (c->post_bit_error.stat[0].scale == FE_SCALE_NOT_AVAILABLE) {
|
|
/* start new sampling period to get rid of old data*/
|
|
ret = si2165_writereg8(state, REG_BER_RST, 0x01);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* set scale to enter read code on next call */
|
|
c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
|
|
c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
|
|
c->post_bit_error.stat[0].uvalue = 0;
|
|
c->post_bit_count.stat[0].uvalue = 0;
|
|
|
|
/*
|
|
* reset DVBv3 value to deliver a good result
|
|
* for the first call
|
|
*/
|
|
state->ber_prev = 0;
|
|
|
|
} else {
|
|
ret = si2165_readreg8(state, REG_BER_AVAIL, &u8tmp);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (u8tmp & 1) {
|
|
u32 biterrcnt;
|
|
|
|
ret = si2165_readreg24(state, REG_BER_BIT,
|
|
&biterrcnt);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
c->post_bit_error.stat[0].uvalue +=
|
|
biterrcnt;
|
|
c->post_bit_count.stat[0].uvalue +=
|
|
STATISTICS_PERIOD_BIT_COUNT;
|
|
|
|
/* start new sampling period */
|
|
ret = si2165_writereg8(state,
|
|
REG_BER_RST, 0x01);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
dev_dbg(&state->client->dev,
|
|
"post_bit_error=%u post_bit_count=%u\n",
|
|
biterrcnt, STATISTICS_PERIOD_BIT_COUNT);
|
|
}
|
|
}
|
|
} else {
|
|
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int si2165_read_snr(struct dvb_frontend *fe, u16 *snr)
|
|
{
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
|
|
if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL)
|
|
*snr = div_s64(c->cnr.stat[0].svalue, 100);
|
|
else
|
|
*snr = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int si2165_read_ber(struct dvb_frontend *fe, u32 *ber)
|
|
{
|
|
struct si2165_state *state = fe->demodulator_priv;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
|
|
if (c->post_bit_error.stat[0].scale != FE_SCALE_COUNTER) {
|
|
*ber = 0;
|
|
return 0;
|
|
}
|
|
|
|
*ber = c->post_bit_error.stat[0].uvalue - state->ber_prev;
|
|
state->ber_prev = c->post_bit_error.stat[0].uvalue;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int si2165_set_oversamp(struct si2165_state *state, u32 dvb_rate)
|
|
{
|
|
u64 oversamp;
|
|
u32 reg_value;
|
|
|
|
if (!dvb_rate)
|
|
return -EINVAL;
|
|
|
|
oversamp = si2165_get_fe_clk(state);
|
|
oversamp <<= 23;
|
|
do_div(oversamp, dvb_rate);
|
|
reg_value = oversamp & 0x3fffffff;
|
|
|
|
dev_dbg(&state->client->dev, "Write oversamp=%#x\n", reg_value);
|
|
return si2165_writereg32(state, REG_OVERSAMP, reg_value);
|
|
}
|
|
|
|
static int si2165_set_if_freq_shift(struct si2165_state *state)
|
|
{
|
|
struct dvb_frontend *fe = &state->fe;
|
|
u64 if_freq_shift;
|
|
s32 reg_value = 0;
|
|
u32 fe_clk = si2165_get_fe_clk(state);
|
|
u32 IF = 0;
|
|
|
|
if (!fe->ops.tuner_ops.get_if_frequency) {
|
|
dev_err(&state->client->dev,
|
|
"Error: get_if_frequency() not defined at tuner. Can't work without it!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!fe_clk)
|
|
return -EINVAL;
|
|
|
|
fe->ops.tuner_ops.get_if_frequency(fe, &IF);
|
|
if_freq_shift = IF;
|
|
if_freq_shift <<= 29;
|
|
|
|
do_div(if_freq_shift, fe_clk);
|
|
reg_value = (s32)if_freq_shift;
|
|
|
|
if (state->config.inversion)
|
|
reg_value = -reg_value;
|
|
|
|
reg_value = reg_value & 0x1fffffff;
|
|
|
|
/* if_freq_shift, usbdump contained 0x023ee08f; */
|
|
return si2165_writereg32(state, REG_IF_FREQ_SHIFT, reg_value);
|
|
}
|
|
|
|
static const struct si2165_reg_value_pair dvbt_regs[] = {
|
|
/* standard = DVB-T */
|
|
{ REG_DVB_STANDARD, 0x01 },
|
|
/* impulsive_noise_remover */
|
|
{ REG_IMPULSIVE_NOISE_REM, 0x01 },
|
|
{ REG_AUTO_RESET, 0x00 },
|
|
/* agc2 */
|
|
{ REG_AGC2_MIN, 0x41 },
|
|
{ REG_AGC2_KACQ, 0x0e },
|
|
{ REG_AGC2_KLOC, 0x10 },
|
|
/* agc */
|
|
{ REG_AGC_UNFREEZE_THR, 0x03 },
|
|
{ REG_AGC_CRESTF_DBX8, 0x78 },
|
|
/* agc */
|
|
{ REG_AAF_CRESTF_DBX8, 0x78 },
|
|
{ REG_ACI_CRESTF_DBX8, 0x68 },
|
|
/* freq_sync_range */
|
|
REG16(REG_FREQ_SYNC_RANGE, 0x0064),
|
|
/* gp_reg0 */
|
|
{ REG_GP_REG0_MSB, 0x00 }
|
|
};
|
|
|
|
static int si2165_set_frontend_dvbt(struct dvb_frontend *fe)
|
|
{
|
|
int ret;
|
|
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
|
|
struct si2165_state *state = fe->demodulator_priv;
|
|
u32 dvb_rate = 0;
|
|
u16 bw10k;
|
|
u32 bw_hz = p->bandwidth_hz;
|
|
|
|
dev_dbg(&state->client->dev, "%s: called\n", __func__);
|
|
|
|
if (!state->has_dvbt)
|
|
return -EINVAL;
|
|
|
|
/* no bandwidth auto-detection */
|
|
if (bw_hz == 0)
|
|
return -EINVAL;
|
|
|
|
dvb_rate = bw_hz * 8 / 7;
|
|
bw10k = bw_hz / 10000;
|
|
|
|
ret = si2165_adjust_pll_divl(state, 12);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* bandwidth in 10KHz steps */
|
|
ret = si2165_writereg16(state, REG_T_BANDWIDTH, bw10k);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = si2165_set_oversamp(state, dvb_rate);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = si2165_write_reg_list(state, dvbt_regs, ARRAY_SIZE(dvbt_regs));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct si2165_reg_value_pair dvbc_regs[] = {
|
|
/* standard = DVB-C */
|
|
{ REG_DVB_STANDARD, 0x05 },
|
|
|
|
/* agc2 */
|
|
{ REG_AGC2_MIN, 0x50 },
|
|
{ REG_AGC2_KACQ, 0x0e },
|
|
{ REG_AGC2_KLOC, 0x10 },
|
|
/* agc */
|
|
{ REG_AGC_UNFREEZE_THR, 0x03 },
|
|
{ REG_AGC_CRESTF_DBX8, 0x68 },
|
|
/* agc */
|
|
{ REG_AAF_CRESTF_DBX8, 0x68 },
|
|
{ REG_ACI_CRESTF_DBX8, 0x50 },
|
|
|
|
{ REG_EQ_AUTO_CONTROL, 0x0d },
|
|
|
|
{ REG_KP_LOCK, 0x05 },
|
|
{ REG_CENTRAL_TAP, 0x09 },
|
|
REG16(REG_UNKNOWN_350, 0x3e80),
|
|
|
|
{ REG_AUTO_RESET, 0x01 },
|
|
REG16(REG_UNKNOWN_24C, 0x0000),
|
|
REG16(REG_UNKNOWN_27C, 0x0000),
|
|
{ REG_SWEEP_STEP, 0x03 },
|
|
{ REG_AGC_IF_TRI, 0x00 },
|
|
};
|
|
|
|
static int si2165_set_frontend_dvbc(struct dvb_frontend *fe)
|
|
{
|
|
struct si2165_state *state = fe->demodulator_priv;
|
|
int ret;
|
|
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
|
|
const u32 dvb_rate = p->symbol_rate;
|
|
u8 u8tmp;
|
|
|
|
if (!state->has_dvbc)
|
|
return -EINVAL;
|
|
|
|
if (dvb_rate == 0)
|
|
return -EINVAL;
|
|
|
|
ret = si2165_adjust_pll_divl(state, 14);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Oversampling */
|
|
ret = si2165_set_oversamp(state, dvb_rate);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
switch (p->modulation) {
|
|
case QPSK:
|
|
u8tmp = 0x3;
|
|
break;
|
|
case QAM_16:
|
|
u8tmp = 0x7;
|
|
break;
|
|
case QAM_32:
|
|
u8tmp = 0x8;
|
|
break;
|
|
case QAM_64:
|
|
u8tmp = 0x9;
|
|
break;
|
|
case QAM_128:
|
|
u8tmp = 0xa;
|
|
break;
|
|
case QAM_256:
|
|
default:
|
|
u8tmp = 0xb;
|
|
break;
|
|
}
|
|
ret = si2165_writereg8(state, REG_REQ_CONSTELLATION, u8tmp);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = si2165_writereg32(state, REG_LOCK_TIMEOUT, 0x007a1200);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = si2165_write_reg_list(state, dvbc_regs, ARRAY_SIZE(dvbc_regs));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct si2165_reg_value_pair adc_rewrite[] = {
|
|
{ REG_ADC_RI1, 0x46 },
|
|
{ REG_ADC_RI3, 0x00 },
|
|
{ REG_ADC_RI5, 0x0a },
|
|
{ REG_ADC_RI6, 0xff },
|
|
{ REG_ADC_RI8, 0x70 }
|
|
};
|
|
|
|
static int si2165_set_frontend(struct dvb_frontend *fe)
|
|
{
|
|
struct si2165_state *state = fe->demodulator_priv;
|
|
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
|
|
u32 delsys = p->delivery_system;
|
|
int ret;
|
|
u8 val[3];
|
|
|
|
/* initial setting of if freq shift */
|
|
ret = si2165_set_if_freq_shift(state);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
switch (delsys) {
|
|
case SYS_DVBT:
|
|
ret = si2165_set_frontend_dvbt(fe);
|
|
if (ret < 0)
|
|
return ret;
|
|
break;
|
|
case SYS_DVBC_ANNEX_A:
|
|
ret = si2165_set_frontend_dvbc(fe);
|
|
if (ret < 0)
|
|
return ret;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* dsp_addr_jump */
|
|
ret = si2165_writereg32(state, REG_ADDR_JUMP, 0xf4000000);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (fe->ops.tuner_ops.set_params)
|
|
fe->ops.tuner_ops.set_params(fe);
|
|
|
|
/* recalc if_freq_shift if IF might has changed */
|
|
ret = si2165_set_if_freq_shift(state);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* boot/wdog status */
|
|
ret = si2165_readreg8(state, REG_WDOG_AND_BOOT, val);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = si2165_writereg8(state, REG_WDOG_AND_BOOT, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* reset all */
|
|
ret = si2165_writereg8(state, REG_RST_ALL, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
/* gp_reg0 */
|
|
ret = si2165_writereg32(state, REG_GP_REG0_LSB, 0x00000000);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* write adc values after each reset*/
|
|
ret = si2165_write_reg_list(state, adc_rewrite,
|
|
ARRAY_SIZE(adc_rewrite));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* start_synchro */
|
|
ret = si2165_writereg8(state, REG_START_SYNCHRO, 0x01);
|
|
if (ret < 0)
|
|
return ret;
|
|
/* boot/wdog status */
|
|
ret = si2165_readreg8(state, REG_WDOG_AND_BOOT, val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dvb_frontend_ops si2165_ops = {
|
|
.info = {
|
|
.name = "Silicon Labs ",
|
|
/* For DVB-C */
|
|
.symbol_rate_min = 1000000,
|
|
.symbol_rate_max = 7200000,
|
|
/* For DVB-T */
|
|
.frequency_stepsize_hz = 166667,
|
|
.caps = FE_CAN_FEC_1_2 |
|
|
FE_CAN_FEC_2_3 |
|
|
FE_CAN_FEC_3_4 |
|
|
FE_CAN_FEC_5_6 |
|
|
FE_CAN_FEC_7_8 |
|
|
FE_CAN_FEC_AUTO |
|
|
FE_CAN_QPSK |
|
|
FE_CAN_QAM_16 |
|
|
FE_CAN_QAM_32 |
|
|
FE_CAN_QAM_64 |
|
|
FE_CAN_QAM_128 |
|
|
FE_CAN_QAM_256 |
|
|
FE_CAN_GUARD_INTERVAL_AUTO |
|
|
FE_CAN_HIERARCHY_AUTO |
|
|
FE_CAN_MUTE_TS |
|
|
FE_CAN_TRANSMISSION_MODE_AUTO |
|
|
FE_CAN_RECOVER
|
|
},
|
|
|
|
.get_tune_settings = si2165_get_tune_settings,
|
|
|
|
.init = si2165_init,
|
|
.sleep = si2165_sleep,
|
|
|
|
.set_frontend = si2165_set_frontend,
|
|
.read_status = si2165_read_status,
|
|
.read_snr = si2165_read_snr,
|
|
.read_ber = si2165_read_ber,
|
|
};
|
|
|
|
static int si2165_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct si2165_state *state = NULL;
|
|
struct si2165_platform_data *pdata = client->dev.platform_data;
|
|
int n;
|
|
int ret = 0;
|
|
u8 val;
|
|
char rev_char;
|
|
const char *chip_name;
|
|
static const struct regmap_config regmap_config = {
|
|
.reg_bits = 16,
|
|
.val_bits = 8,
|
|
.max_register = 0x08ff,
|
|
};
|
|
|
|
/* allocate memory for the internal state */
|
|
state = kzalloc(sizeof(*state), GFP_KERNEL);
|
|
if (!state) {
|
|
ret = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
/* create regmap */
|
|
state->regmap = devm_regmap_init_i2c(client, ®map_config);
|
|
if (IS_ERR(state->regmap)) {
|
|
ret = PTR_ERR(state->regmap);
|
|
goto error;
|
|
}
|
|
|
|
/* setup the state */
|
|
state->client = client;
|
|
state->config.i2c_addr = client->addr;
|
|
state->config.chip_mode = pdata->chip_mode;
|
|
state->config.ref_freq_hz = pdata->ref_freq_hz;
|
|
state->config.inversion = pdata->inversion;
|
|
|
|
if (state->config.ref_freq_hz < 4000000 ||
|
|
state->config.ref_freq_hz > 27000000) {
|
|
dev_err(&state->client->dev, "ref_freq of %d Hz not supported by this driver\n",
|
|
state->config.ref_freq_hz);
|
|
ret = -EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
/* create dvb_frontend */
|
|
memcpy(&state->fe.ops, &si2165_ops,
|
|
sizeof(struct dvb_frontend_ops));
|
|
state->fe.ops.release = NULL;
|
|
state->fe.demodulator_priv = state;
|
|
i2c_set_clientdata(client, state);
|
|
|
|
/* powerup */
|
|
ret = si2165_writereg8(state, REG_CHIP_MODE, state->config.chip_mode);
|
|
if (ret < 0)
|
|
goto nodev_error;
|
|
|
|
ret = si2165_readreg8(state, REG_CHIP_MODE, &val);
|
|
if (ret < 0)
|
|
goto nodev_error;
|
|
if (val != state->config.chip_mode)
|
|
goto nodev_error;
|
|
|
|
ret = si2165_readreg8(state, REG_CHIP_REVCODE, &state->chip_revcode);
|
|
if (ret < 0)
|
|
goto nodev_error;
|
|
|
|
ret = si2165_readreg8(state, REV_CHIP_TYPE, &state->chip_type);
|
|
if (ret < 0)
|
|
goto nodev_error;
|
|
|
|
/* powerdown */
|
|
ret = si2165_writereg8(state, REG_CHIP_MODE, SI2165_MODE_OFF);
|
|
if (ret < 0)
|
|
goto nodev_error;
|
|
|
|
if (state->chip_revcode < 26)
|
|
rev_char = 'A' + state->chip_revcode;
|
|
else
|
|
rev_char = '?';
|
|
|
|
switch (state->chip_type) {
|
|
case 0x06:
|
|
chip_name = "Si2161";
|
|
state->has_dvbt = true;
|
|
break;
|
|
case 0x07:
|
|
chip_name = "Si2165";
|
|
state->has_dvbt = true;
|
|
state->has_dvbc = true;
|
|
break;
|
|
default:
|
|
dev_err(&state->client->dev, "Unsupported Silicon Labs chip (type %d, rev %d)\n",
|
|
state->chip_type, state->chip_revcode);
|
|
goto nodev_error;
|
|
}
|
|
|
|
dev_info(&state->client->dev,
|
|
"Detected Silicon Labs %s-%c (type %d, rev %d)\n",
|
|
chip_name, rev_char, state->chip_type,
|
|
state->chip_revcode);
|
|
|
|
strlcat(state->fe.ops.info.name, chip_name,
|
|
sizeof(state->fe.ops.info.name));
|
|
|
|
n = 0;
|
|
if (state->has_dvbt) {
|
|
state->fe.ops.delsys[n++] = SYS_DVBT;
|
|
strlcat(state->fe.ops.info.name, " DVB-T",
|
|
sizeof(state->fe.ops.info.name));
|
|
}
|
|
if (state->has_dvbc) {
|
|
state->fe.ops.delsys[n++] = SYS_DVBC_ANNEX_A;
|
|
strlcat(state->fe.ops.info.name, " DVB-C",
|
|
sizeof(state->fe.ops.info.name));
|
|
}
|
|
|
|
/* return fe pointer */
|
|
*pdata->fe = &state->fe;
|
|
|
|
return 0;
|
|
|
|
nodev_error:
|
|
ret = -ENODEV;
|
|
error:
|
|
kfree(state);
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static int si2165_remove(struct i2c_client *client)
|
|
{
|
|
struct si2165_state *state = i2c_get_clientdata(client);
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
|
|
kfree(state);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id si2165_id_table[] = {
|
|
{"si2165", 0},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, si2165_id_table);
|
|
|
|
static struct i2c_driver si2165_driver = {
|
|
.driver = {
|
|
.name = "si2165",
|
|
},
|
|
.probe = si2165_probe,
|
|
.remove = si2165_remove,
|
|
.id_table = si2165_id_table,
|
|
};
|
|
|
|
module_i2c_driver(si2165_driver);
|
|
|
|
MODULE_DESCRIPTION("Silicon Labs Si2165 DVB-C/-T Demodulator driver");
|
|
MODULE_AUTHOR("Matthias Schwarzott <zzam@gentoo.org>");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_FIRMWARE(SI2165_FIRMWARE_REV_D);
|