linux/drivers/media/dvb-frontends/cxd2820r_t.c

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 Based on 2 normalized pattern(s): 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 51 franklin street fifth floor boston ma 02110 1301 usa 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 [no]_[pad]_[ctrl] 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 51 franklin street fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 176 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154040.652910950@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-19 13:51:31 +00:00
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Sony CXD2820R demodulator driver
*
* Copyright (C) 2010 Antti Palosaari <crope@iki.fi>
*/
#include "cxd2820r_priv.h"
int cxd2820r_set_frontend_t(struct dvb_frontend *fe)
{
struct cxd2820r_priv *priv = fe->demodulator_priv;
struct i2c_client *client = priv->client[0];
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, bw_i;
unsigned int utmp;
u32 if_frequency;
u8 buf[3], bw_param;
u8 bw_params1[][5] = {
{ 0x17, 0xea, 0xaa, 0xaa, 0xaa }, /* 6 MHz */
{ 0x14, 0x80, 0x00, 0x00, 0x00 }, /* 7 MHz */
{ 0x11, 0xf0, 0x00, 0x00, 0x00 }, /* 8 MHz */
};
u8 bw_params2[][2] = {
{ 0x1f, 0xdc }, /* 6 MHz */
{ 0x12, 0xf8 }, /* 7 MHz */
{ 0x01, 0xe0 }, /* 8 MHz */
};
struct reg_val_mask tab[] = {
{ 0x00080, 0x00, 0xff },
{ 0x00081, 0x03, 0xff },
{ 0x00085, 0x07, 0xff },
{ 0x00088, 0x01, 0xff },
{ 0x00070, priv->ts_mode, 0xff },
{ 0x00071, !priv->ts_clk_inv << 4, 0x10 },
{ 0x000cb, priv->if_agc_polarity << 6, 0x40 },
{ 0x000a5, 0x00, 0x01 },
{ 0x00082, 0x20, 0x60 },
{ 0x000c2, 0xc3, 0xff },
{ 0x0016a, 0x50, 0xff },
{ 0x00427, 0x41, 0xff },
};
dev_dbg(&client->dev,
"delivery_system=%d modulation=%d frequency=%u bandwidth_hz=%u inversion=%d\n",
c->delivery_system, c->modulation, c->frequency,
c->bandwidth_hz, c->inversion);
switch (c->bandwidth_hz) {
case 6000000:
bw_i = 0;
bw_param = 2;
break;
case 7000000:
bw_i = 1;
bw_param = 1;
break;
case 8000000:
bw_i = 2;
bw_param = 0;
break;
default:
return -EINVAL;
}
/* program tuner */
if (fe->ops.tuner_ops.set_params)
fe->ops.tuner_ops.set_params(fe);
if (priv->delivery_system != SYS_DVBT) {
ret = cxd2820r_wr_reg_val_mask_tab(priv, tab, ARRAY_SIZE(tab));
if (ret)
goto error;
}
priv->delivery_system = SYS_DVBT;
priv->ber_running = false; /* tune stops BER counter */
/* program IF frequency */
if (fe->ops.tuner_ops.get_if_frequency) {
ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency);
if (ret)
goto error;
dev_dbg(&client->dev, "if_frequency=%u\n", if_frequency);
} else {
ret = -EINVAL;
goto error;
}
utmp = DIV_ROUND_CLOSEST_ULL((u64)if_frequency * 0x1000000, CXD2820R_CLK);
buf[0] = (utmp >> 16) & 0xff;
buf[1] = (utmp >> 8) & 0xff;
buf[2] = (utmp >> 0) & 0xff;
ret = regmap_bulk_write(priv->regmap[0], 0x00b6, buf, 3);
if (ret)
goto error;
ret = regmap_bulk_write(priv->regmap[0], 0x009f, bw_params1[bw_i], 5);
if (ret)
goto error;
ret = regmap_update_bits(priv->regmap[0], 0x00d7, 0xc0, bw_param << 6);
if (ret)
goto error;
ret = regmap_bulk_write(priv->regmap[0], 0x00d9, bw_params2[bw_i], 2);
if (ret)
goto error;
ret = regmap_write(priv->regmap[0], 0x00ff, 0x08);
if (ret)
goto error;
ret = regmap_write(priv->regmap[0], 0x00fe, 0x01);
if (ret)
goto error;
return ret;
error:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
int cxd2820r_get_frontend_t(struct dvb_frontend *fe,
struct dtv_frontend_properties *c)
{
struct cxd2820r_priv *priv = fe->demodulator_priv;
struct i2c_client *client = priv->client[0];
int ret;
unsigned int utmp;
u8 buf[2];
dev_dbg(&client->dev, "\n");
ret = regmap_bulk_read(priv->regmap[0], 0x002f, buf, sizeof(buf));
if (ret)
goto error;
switch ((buf[0] >> 6) & 0x03) {
case 0:
c->modulation = QPSK;
break;
case 1:
c->modulation = QAM_16;
break;
case 2:
c->modulation = QAM_64;
break;
}
switch ((buf[1] >> 1) & 0x03) {
case 0:
c->transmission_mode = TRANSMISSION_MODE_2K;
break;
case 1:
c->transmission_mode = TRANSMISSION_MODE_8K;
break;
}
switch ((buf[1] >> 3) & 0x03) {
case 0:
c->guard_interval = GUARD_INTERVAL_1_32;
break;
case 1:
c->guard_interval = GUARD_INTERVAL_1_16;
break;
case 2:
c->guard_interval = GUARD_INTERVAL_1_8;
break;
case 3:
c->guard_interval = GUARD_INTERVAL_1_4;
break;
}
switch ((buf[0] >> 3) & 0x07) {
case 0:
c->hierarchy = HIERARCHY_NONE;
break;
case 1:
c->hierarchy = HIERARCHY_1;
break;
case 2:
c->hierarchy = HIERARCHY_2;
break;
case 3:
c->hierarchy = HIERARCHY_4;
break;
}
switch ((buf[0] >> 0) & 0x07) {
case 0:
c->code_rate_HP = FEC_1_2;
break;
case 1:
c->code_rate_HP = FEC_2_3;
break;
case 2:
c->code_rate_HP = FEC_3_4;
break;
case 3:
c->code_rate_HP = FEC_5_6;
break;
case 4:
c->code_rate_HP = FEC_7_8;
break;
}
switch ((buf[1] >> 5) & 0x07) {
case 0:
c->code_rate_LP = FEC_1_2;
break;
case 1:
c->code_rate_LP = FEC_2_3;
break;
case 2:
c->code_rate_LP = FEC_3_4;
break;
case 3:
c->code_rate_LP = FEC_5_6;
break;
case 4:
c->code_rate_LP = FEC_7_8;
break;
}
ret = regmap_read(priv->regmap[0], 0x07c6, &utmp);
if (ret)
goto error;
switch ((utmp >> 0) & 0x01) {
case 0:
c->inversion = INVERSION_OFF;
break;
case 1:
c->inversion = INVERSION_ON;
break;
}
return ret;
error:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
int cxd2820r_read_status_t(struct dvb_frontend *fe, enum fe_status *status)
{
struct cxd2820r_priv *priv = fe->demodulator_priv;
struct i2c_client *client = priv->client[0];
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
unsigned int utmp, utmp1, utmp2;
u8 buf[3];
/* Lock detection */
ret = regmap_bulk_read(priv->regmap[0], 0x0010, &buf[0], 1);
if (ret)
goto error;
ret = regmap_bulk_read(priv->regmap[0], 0x0073, &buf[1], 1);
if (ret)
goto error;
utmp1 = (buf[0] >> 0) & 0x07;
utmp2 = (buf[1] >> 3) & 0x01;
if (utmp1 == 6 && utmp2 == 1) {
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
} else if (utmp1 == 6 || utmp2 == 1) {
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
FE_HAS_VITERBI | FE_HAS_SYNC;
} else {
*status = 0;
}
dev_dbg(&client->dev, "status=%02x raw=%*ph sync=%u ts=%u\n",
*status, 2, buf, utmp1, utmp2);
/* Signal strength */
if (*status & FE_HAS_SIGNAL) {
unsigned int strength;
ret = regmap_bulk_read(priv->regmap[0], 0x0026, buf, 2);
if (ret)
goto error;
utmp = buf[0] << 8 | buf[1] << 0;
utmp = ~utmp & 0x0fff;
/* Scale value to 0x0000-0xffff */
strength = utmp << 4 | utmp >> 8;
c->strength.len = 1;
c->strength.stat[0].scale = FE_SCALE_RELATIVE;
c->strength.stat[0].uvalue = strength;
} else {
c->strength.len = 1;
c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
/* CNR */
if (*status & FE_HAS_VITERBI) {
unsigned int cnr;
ret = regmap_bulk_read(priv->regmap[0], 0x002c, buf, 2);
if (ret)
goto error;
utmp = buf[0] << 8 | buf[1] << 0;
if (utmp)
cnr = div_u64((u64)(intlog10(utmp)
- intlog10(32000 - utmp) + 55532585)
* 10000, (1 << 24));
else
cnr = 0;
c->cnr.len = 1;
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
c->cnr.stat[0].svalue = cnr;
} else {
c->cnr.len = 1;
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
/* BER */
if (*status & FE_HAS_SYNC) {
unsigned int post_bit_error;
bool start_ber;
if (priv->ber_running) {
ret = regmap_bulk_read(priv->regmap[0], 0x0076, buf, 3);
if (ret)
goto error;
if ((buf[2] >> 7) & 0x01) {
post_bit_error = buf[2] << 16 | buf[1] << 8 |
buf[0] << 0;
post_bit_error &= 0x0fffff;
start_ber = true;
} else {
post_bit_error = 0;
start_ber = false;
}
} else {
post_bit_error = 0;
start_ber = true;
}
if (start_ber) {
ret = regmap_write(priv->regmap[0], 0x0079, 0x01);
if (ret)
goto error;
priv->ber_running = true;
}
priv->post_bit_error += post_bit_error;
c->post_bit_error.len = 1;
c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_error.stat[0].uvalue = priv->post_bit_error;
} else {
c->post_bit_error.len = 1;
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
return ret;
error:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
int cxd2820r_init_t(struct dvb_frontend *fe)
{
struct cxd2820r_priv *priv = fe->demodulator_priv;
struct i2c_client *client = priv->client[0];
int ret;
dev_dbg(&client->dev, "\n");
ret = regmap_write(priv->regmap[0], 0x0085, 0x07);
if (ret)
goto error;
return ret;
error:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
int cxd2820r_sleep_t(struct dvb_frontend *fe)
{
struct cxd2820r_priv *priv = fe->demodulator_priv;
struct i2c_client *client = priv->client[0];
int ret;
static struct reg_val_mask tab[] = {
{ 0x000ff, 0x1f, 0xff },
{ 0x00085, 0x00, 0xff },
{ 0x00088, 0x01, 0xff },
{ 0x00081, 0x00, 0xff },
{ 0x00080, 0x00, 0xff },
};
dev_dbg(&client->dev, "\n");
priv->delivery_system = SYS_UNDEFINED;
ret = cxd2820r_wr_reg_val_mask_tab(priv, tab, ARRAY_SIZE(tab));
if (ret)
goto error;
return ret;
error:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
int cxd2820r_get_tune_settings_t(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *s)
{
s->min_delay_ms = 500;
s->step_size = fe->ops.info.frequency_stepsize_hz * 2;
s->max_drift = (fe->ops.info.frequency_stepsize_hz * 2) + 1;
return 0;
}