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linux-next/drivers/media/dvb-frontends/cxd2820r_c.c
Thomas Gleixner 1621633323 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>
2019-05-21 11:28:39 +02:00

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// 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_c(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;
unsigned int utmp;
u8 buf[2];
u32 if_frequency;
struct reg_val_mask tab[] = {
{ 0x00080, 0x01, 0xff },
{ 0x00081, 0x05, 0xff },
{ 0x00085, 0x07, 0xff },
{ 0x00088, 0x01, 0xff },
{ 0x00082, 0x20, 0x60 },
{ 0x1016a, 0x48, 0xff },
{ 0x100a5, 0x00, 0x01 },
{ 0x10020, 0x06, 0x07 },
{ 0x10059, 0x50, 0xff },
{ 0x10087, 0x0c, 0x3c },
{ 0x1008b, 0x07, 0xff },
{ 0x1001f, priv->if_agc_polarity << 7, 0x80 },
{ 0x10070, priv->ts_mode, 0xff },
{ 0x10071, !priv->ts_clk_inv << 4, 0x10 },
};
dev_dbg(&client->dev,
"delivery_system=%d modulation=%d frequency=%u symbol_rate=%u inversion=%d\n",
c->delivery_system, c->modulation, c->frequency,
c->symbol_rate, c->inversion);
/* program tuner */
if (fe->ops.tuner_ops.set_params)
fe->ops.tuner_ops.set_params(fe);
if (priv->delivery_system != SYS_DVBC_ANNEX_A) {
ret = cxd2820r_wr_reg_val_mask_tab(priv, tab, ARRAY_SIZE(tab));
if (ret)
goto error;
}
priv->delivery_system = SYS_DVBC_ANNEX_A;
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 = 0x4000 - DIV_ROUND_CLOSEST_ULL((u64)if_frequency * 0x4000, CXD2820R_CLK);
buf[0] = (utmp >> 8) & 0xff;
buf[1] = (utmp >> 0) & 0xff;
ret = regmap_bulk_write(priv->regmap[1], 0x0042, buf, 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_c(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[1], 0x001a, buf, 2);
if (ret)
goto error;
c->symbol_rate = 2500 * ((buf[0] & 0x0f) << 8 | buf[1]);
ret = regmap_read(priv->regmap[1], 0x0019, &utmp);
if (ret)
goto error;
switch ((utmp >> 0) & 0x07) {
case 0:
c->modulation = QAM_16;
break;
case 1:
c->modulation = QAM_32;
break;
case 2:
c->modulation = QAM_64;
break;
case 3:
c->modulation = QAM_128;
break;
case 4:
c->modulation = QAM_256;
break;
}
switch ((utmp >> 7) & 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_c(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[1], 0x0088, &buf[0], 1);
if (ret)
goto error;
ret = regmap_bulk_read(priv->regmap[1], 0x0073, &buf[1], 1);
if (ret)
goto error;
utmp1 = (buf[0] >> 0) & 0x01;
utmp2 = (buf[1] >> 3) & 0x01;
if (utmp1 == 1 && utmp2 == 1) {
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
} else if (utmp1 == 1 || 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[1], 0x0049, buf, 2);
if (ret)
goto error;
utmp = buf[0] << 8 | buf[1] << 0;
utmp = 511 - sign_extend32(utmp, 9);
/* Scale value to 0x0000-0xffff */
strength = utmp << 6 | utmp >> 4;
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, const_a, const_b;
ret = regmap_read(priv->regmap[1], 0x0019, &utmp);
if (ret)
goto error;
if (((utmp >> 0) & 0x03) % 2) {
const_a = 8750;
const_b = 650;
} else {
const_a = 9500;
const_b = 760;
}
ret = regmap_read(priv->regmap[1], 0x004d, &utmp);
if (ret)
goto error;
#define CXD2820R_LOG2_E_24 24204406 /* log2(e) << 24 */
if (utmp)
cnr = div_u64((u64)(intlog2(const_b) - intlog2(utmp))
* const_a, CXD2820R_LOG2_E_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[1], 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[1], 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_c(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_c(struct dvb_frontend *fe)
{
struct cxd2820r_priv *priv = fe->demodulator_priv;
struct i2c_client *client = priv->client[0];
int ret;
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_c(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *s)
{
s->min_delay_ms = 500;
s->step_size = 0; /* no zigzag */
s->max_drift = 0;
return 0;
}
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