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linux/drivers/media/dvb-frontends/cxd2880/cxd2880_top.c

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// SPDX-License-Identifier: GPL-2.0
/*
* cxd2880_top.c
* Sony CXD2880 DVB-T2/T tuner + demodulator driver
*
* Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
#include <linux/spi/spi.h>
#include <media/dvb_frontend.h>
#include <media/dvb_math.h>
#include "cxd2880.h"
#include "cxd2880_tnrdmd_mon.h"
#include "cxd2880_tnrdmd_dvbt2_mon.h"
#include "cxd2880_tnrdmd_dvbt_mon.h"
#include "cxd2880_integ.h"
#include "cxd2880_tnrdmd_dvbt2.h"
#include "cxd2880_tnrdmd_dvbt.h"
#include "cxd2880_devio_spi.h"
#include "cxd2880_spi_device.h"
#include "cxd2880_tnrdmd_driver_version.h"
struct cxd2880_priv {
struct cxd2880_tnrdmd tnrdmd;
struct spi_device *spi;
struct cxd2880_io regio;
struct cxd2880_spi_device spi_device;
struct cxd2880_spi cxd2880_spi;
struct cxd2880_dvbt_tune_param dvbt_tune_param;
struct cxd2880_dvbt2_tune_param dvbt2_tune_param;
struct mutex *spi_mutex; /* For SPI access exclusive control */
unsigned long pre_ber_update;
unsigned long pre_ber_interval;
unsigned long post_ber_update;
unsigned long post_ber_interval;
unsigned long ucblock_update;
unsigned long ucblock_interval;
enum fe_status s;
};
static int cxd2880_pre_bit_err_t(struct cxd2880_tnrdmd *tnrdmd,
u32 *pre_bit_err, u32 *pre_bit_count)
{
u8 rdata[2];
int ret;
if (!tnrdmd || !pre_bit_err || !pre_bit_count)
return -EINVAL;
if (tnrdmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
return -EINVAL;
if (tnrdmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
return -EINVAL;
if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT)
return -EINVAL;
ret = slvt_freeze_reg(tnrdmd);
if (ret)
return ret;
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x10);
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x39, rdata, 1);
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
if ((rdata[0] & 0x01) == 0) {
slvt_unfreeze_reg(tnrdmd);
return -EAGAIN;
}
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x22, rdata, 2);
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
*pre_bit_err = (rdata[0] << 8) | rdata[1];
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x6f, rdata, 1);
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
slvt_unfreeze_reg(tnrdmd);
*pre_bit_count = ((rdata[0] & 0x07) == 0) ?
256 : (0x1000 << (rdata[0] & 0x07));
return 0;
}
static int cxd2880_pre_bit_err_t2(struct cxd2880_tnrdmd *tnrdmd,
u32 *pre_bit_err,
u32 *pre_bit_count)
{
u32 period_exp = 0;
u32 n_ldpc = 0;
u8 data[5];
int ret;
if (!tnrdmd || !pre_bit_err || !pre_bit_count)
return -EINVAL;
if (tnrdmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
return -EINVAL;
if (tnrdmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
return -EINVAL;
if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT2)
return -EINVAL;
ret = slvt_freeze_reg(tnrdmd);
if (ret)
return ret;
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x0b);
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x3c, data, sizeof(data));
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
if (!(data[0] & 0x01)) {
slvt_unfreeze_reg(tnrdmd);
return -EAGAIN;
}
*pre_bit_err =
((data[1] & 0x0f) << 24) | (data[2] << 16) | (data[3] << 8) | data[4];
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0xa0, data, 1);
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
if (((enum cxd2880_dvbt2_plp_fec)(data[0] & 0x03)) ==
CXD2880_DVBT2_FEC_LDPC_16K)
n_ldpc = 16200;
else
n_ldpc = 64800;
slvt_unfreeze_reg(tnrdmd);
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x20);
if (ret)
return ret;
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x6f, data, 1);
if (ret)
return ret;
period_exp = data[0] & 0x0f;
*pre_bit_count = (1U << period_exp) * n_ldpc;
return 0;
}
static int cxd2880_post_bit_err_t(struct cxd2880_tnrdmd *tnrdmd,
u32 *post_bit_err,
u32 *post_bit_count)
{
u8 rdata[3];
u32 bit_error = 0;
u32 period_exp = 0;
int ret;
if (!tnrdmd || !post_bit_err || !post_bit_count)
return -EINVAL;
if (tnrdmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
return -EINVAL;
if (tnrdmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
return -EINVAL;
if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT)
return -EINVAL;
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x0d);
if (ret)
return ret;
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x15, rdata, 3);
if (ret)
return ret;
if ((rdata[0] & 0x40) == 0)
return -EAGAIN;
*post_bit_err = ((rdata[0] & 0x3f) << 16) | (rdata[1] << 8) | rdata[2];
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x10);
if (ret)
return ret;
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x60, rdata, 1);
if (ret)
return ret;
period_exp = (rdata[0] & 0x1f);
if (period_exp <= 11 && (bit_error > (1U << period_exp) * 204 * 8))
return -EAGAIN;
*post_bit_count = (1U << period_exp) * 204 * 8;
return 0;
}
static int cxd2880_post_bit_err_t2(struct cxd2880_tnrdmd *tnrdmd,
u32 *post_bit_err,
u32 *post_bit_count)
{
u32 period_exp = 0;
u32 n_bch = 0;
u8 data[3];
enum cxd2880_dvbt2_plp_fec plp_fec_type =
CXD2880_DVBT2_FEC_LDPC_16K;
enum cxd2880_dvbt2_plp_code_rate plp_code_rate =
CXD2880_DVBT2_R1_2;
int ret;
static const u16 n_bch_bits_lookup[2][8] = {
{7200, 9720, 10800, 11880, 12600, 13320, 5400, 6480},
{32400, 38880, 43200, 48600, 51840, 54000, 21600, 25920}
};
if (!tnrdmd || !post_bit_err || !post_bit_count)
return -EINVAL;
if (tnrdmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
return -EINVAL;
if (tnrdmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
return -EINVAL;
if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT2)
return -EINVAL;
ret = slvt_freeze_reg(tnrdmd);
if (ret)
return ret;
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x0b);
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x15, data, 3);
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
if (!(data[0] & 0x40)) {
slvt_unfreeze_reg(tnrdmd);
return -EAGAIN;
}
*post_bit_err =
((data[0] & 0x3f) << 16) | (data[1] << 8) | data[2];
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x9d, data, 1);
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
plp_code_rate =
(enum cxd2880_dvbt2_plp_code_rate)(data[0] & 0x07);
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0xa0, data, 1);
if (ret) {
slvt_unfreeze_reg(tnrdmd);
return ret;
}
plp_fec_type = (enum cxd2880_dvbt2_plp_fec)(data[0] & 0x03);
slvt_unfreeze_reg(tnrdmd);
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x20);
if (ret)
return ret;
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x72, data, 1);
if (ret)
return ret;
period_exp = data[0] & 0x0f;
if (plp_fec_type > CXD2880_DVBT2_FEC_LDPC_64K ||
plp_code_rate > CXD2880_DVBT2_R2_5)
return -EAGAIN;
n_bch = n_bch_bits_lookup[plp_fec_type][plp_code_rate];
if (*post_bit_err > ((1U << period_exp) * n_bch))
return -EAGAIN;
*post_bit_count = (1U << period_exp) * n_bch;
return 0;
}
static int cxd2880_read_block_err_t(struct cxd2880_tnrdmd *tnrdmd,
u32 *block_err,
u32 *block_count)
{
u8 rdata[3];
int ret;
if (!tnrdmd || !block_err || !block_count)
return -EINVAL;
if (tnrdmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
return -EINVAL;
if (tnrdmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
return -EINVAL;
if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT)
return -EINVAL;
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x0d);
if (ret)
return ret;
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x18, rdata, 3);
if (ret)
return ret;
if ((rdata[0] & 0x01) == 0)
return -EAGAIN;
*block_err = (rdata[1] << 8) | rdata[2];
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x10);
if (ret)
return ret;
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x5c, rdata, 1);
if (ret)
return ret;
*block_count = 1U << (rdata[0] & 0x0f);
if ((*block_count == 0) || (*block_err > *block_count))
return -EAGAIN;
return 0;
}
static int cxd2880_read_block_err_t2(struct cxd2880_tnrdmd *tnrdmd,
u32 *block_err,
u32 *block_count)
{
u8 rdata[3];
int ret;
if (!tnrdmd || !block_err || !block_count)
return -EINVAL;
if (tnrdmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
return -EINVAL;
if (tnrdmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
return -EINVAL;
if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT2)
return -EINVAL;
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x0b);
if (ret)
return ret;
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x18, rdata, 3);
if (ret)
return ret;
if ((rdata[0] & 0x01) == 0)
return -EAGAIN;
*block_err = (rdata[1] << 8) | rdata[2];
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x24);
if (ret)
return ret;
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0xdc, rdata, 1);
if (ret)
return ret;
*block_count = 1U << (rdata[0] & 0x0f);
if ((*block_count == 0) || (*block_err > *block_count))
return -EAGAIN;
return 0;
}
static void cxd2880_release(struct dvb_frontend *fe)
{
struct cxd2880_priv *priv = NULL;
if (!fe) {
pr_err("invalid arg.\n");
return;
}
priv = fe->demodulator_priv;
kfree(priv);
}
static int cxd2880_init(struct dvb_frontend *fe)
{
int ret;
struct cxd2880_priv *priv = NULL;
struct cxd2880_tnrdmd_create_param create_param;
if (!fe) {
pr_err("invalid arg.\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
create_param.ts_output_if = CXD2880_TNRDMD_TSOUT_IF_SPI;
create_param.xtal_share_type = CXD2880_TNRDMD_XTAL_SHARE_NONE;
create_param.en_internal_ldo = 1;
create_param.xosc_cap = 18;
create_param.xosc_i = 8;
create_param.stationary_use = 1;
mutex_lock(priv->spi_mutex);
if (priv->tnrdmd.io != &priv->regio) {
ret = cxd2880_tnrdmd_create(&priv->tnrdmd,
&priv->regio, &create_param);
if (ret) {
mutex_unlock(priv->spi_mutex);
pr_info("cxd2880 tnrdmd create failed %d\n", ret);
return ret;
}
}
ret = cxd2880_integ_init(&priv->tnrdmd);
if (ret) {
mutex_unlock(priv->spi_mutex);
pr_err("cxd2880 integ init failed %d\n", ret);
return ret;
}
ret = cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
CXD2880_TNRDMD_CFG_TSPIN_CURRENT,
0x00);
if (ret) {
mutex_unlock(priv->spi_mutex);
pr_err("cxd2880 set config failed %d\n", ret);
return ret;
}
mutex_unlock(priv->spi_mutex);
pr_debug("OK.\n");
return ret;
}
static int cxd2880_sleep(struct dvb_frontend *fe)
{
int ret;
struct cxd2880_priv *priv = NULL;
if (!fe) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
mutex_lock(priv->spi_mutex);
ret = cxd2880_tnrdmd_sleep(&priv->tnrdmd);
mutex_unlock(priv->spi_mutex);
pr_debug("tnrdmd_sleep ret %d\n", ret);
return ret;
}
static int cxd2880_read_signal_strength(struct dvb_frontend *fe,
u16 *strength)
{
int ret;
struct cxd2880_priv *priv = NULL;
struct dtv_frontend_properties *c = NULL;
int level = 0;
if (!fe || !strength) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
c = &fe->dtv_property_cache;
mutex_lock(priv->spi_mutex);
if (c->delivery_system == SYS_DVBT ||
c->delivery_system == SYS_DVBT2) {
ret = cxd2880_tnrdmd_mon_rf_lvl(&priv->tnrdmd, &level);
} else {
pr_debug("invalid system\n");
mutex_unlock(priv->spi_mutex);
return -EINVAL;
}
mutex_unlock(priv->spi_mutex);
level /= 125;
/*
* level should be between -105dBm and -30dBm.
* E.g. they should be between:
* -105000/125 = -840 and -30000/125 = -240
*/
level = clamp(level, -840, -240);
/* scale value to 0x0000-0xffff */
*strength = ((level + 840) * 0xffff) / (-240 + 840);
if (ret)
pr_debug("ret = %d\n", ret);
return ret;
}
static int cxd2880_read_snr(struct dvb_frontend *fe, u16 *snr)
{
int ret;
int snrvalue = 0;
struct cxd2880_priv *priv = NULL;
struct dtv_frontend_properties *c = NULL;
if (!fe || !snr) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
c = &fe->dtv_property_cache;
mutex_lock(priv->spi_mutex);
if (c->delivery_system == SYS_DVBT) {
ret = cxd2880_tnrdmd_dvbt_mon_snr(&priv->tnrdmd,
&snrvalue);
} else if (c->delivery_system == SYS_DVBT2) {
ret = cxd2880_tnrdmd_dvbt2_mon_snr(&priv->tnrdmd,
&snrvalue);
} else {
pr_err("invalid system\n");
mutex_unlock(priv->spi_mutex);
return -EINVAL;
}
mutex_unlock(priv->spi_mutex);
if (snrvalue < 0)
snrvalue = 0;
*snr = snrvalue;
if (ret)
pr_debug("ret = %d\n", ret);
return ret;
}
static int cxd2880_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
int ret;
struct cxd2880_priv *priv = NULL;
struct dtv_frontend_properties *c = NULL;
if (!fe || !ucblocks) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
c = &fe->dtv_property_cache;
mutex_lock(priv->spi_mutex);
if (c->delivery_system == SYS_DVBT) {
ret = cxd2880_tnrdmd_dvbt_mon_packet_error_number(&priv->tnrdmd,
ucblocks);
} else if (c->delivery_system == SYS_DVBT2) {
ret = cxd2880_tnrdmd_dvbt2_mon_packet_error_number(&priv->tnrdmd,
ucblocks);
} else {
pr_err("invalid system\n");
mutex_unlock(priv->spi_mutex);
return -EINVAL;
}
mutex_unlock(priv->spi_mutex);
if (ret)
pr_debug("ret = %d\n", ret);
return ret;
}
static int cxd2880_read_ber(struct dvb_frontend *fe, u32 *ber)
{
*ber = 0;
return 0;
}
static int cxd2880_set_ber_per_period_t(struct dvb_frontend *fe)
{
int ret;
struct cxd2880_priv *priv;
struct cxd2880_dvbt_tpsinfo info;
enum cxd2880_dtv_bandwidth bw = CXD2880_DTV_BW_1_7_MHZ;
u32 pre_ber_rate = 0;
u32 post_ber_rate = 0;
u32 ucblock_rate = 0;
u32 mes_exp = 0;
static const int cr_table[5] = {31500, 42000, 47250, 52500, 55125};
static const int denominator_tbl[4] = {125664, 129472, 137088, 152320};
if (!fe) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
bw = priv->dvbt_tune_param.bandwidth;
ret = cxd2880_tnrdmd_dvbt_mon_tps_info(&priv->tnrdmd,
&info);
if (ret) {
pr_err("tps monitor error ret = %d\n", ret);
info.hierarchy = CXD2880_DVBT_HIERARCHY_NON;
info.constellation = CXD2880_DVBT_CONSTELLATION_QPSK;
info.guard = CXD2880_DVBT_GUARD_1_4;
info.rate_hp = CXD2880_DVBT_CODERATE_1_2;
info.rate_lp = CXD2880_DVBT_CODERATE_1_2;
}
if (info.hierarchy == CXD2880_DVBT_HIERARCHY_NON) {
pre_ber_rate = 63000000 * bw * (info.constellation * 2 + 2) /
denominator_tbl[info.guard];
post_ber_rate = 1000 * cr_table[info.rate_hp] * bw *
(info.constellation * 2 + 2) /
denominator_tbl[info.guard];
ucblock_rate = 875 * cr_table[info.rate_hp] * bw *
(info.constellation * 2 + 2) /
denominator_tbl[info.guard];
} else {
u8 data = 0;
struct cxd2880_tnrdmd *tnrdmd = &priv->tnrdmd;
ret = tnrdmd->io->write_reg(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x00, 0x10);
if (!ret) {
ret = tnrdmd->io->read_regs(tnrdmd->io,
CXD2880_IO_TGT_DMD,
0x67, &data, 1);
if (ret)
data = 0x00;
} else {
data = 0x00;
}
if (data & 0x01) { /* Low priority */
pre_ber_rate =
63000000 * bw * (info.constellation * 2 + 2) /
denominator_tbl[info.guard];
post_ber_rate = 1000 * cr_table[info.rate_lp] * bw *
(info.constellation * 2 + 2) /
denominator_tbl[info.guard];
ucblock_rate = (1000 * 7 / 8) * cr_table[info.rate_lp] *
bw * (info.constellation * 2 + 2) /
denominator_tbl[info.guard];
} else { /* High priority */
pre_ber_rate =
63000000 * bw * 2 / denominator_tbl[info.guard];
post_ber_rate = 1000 * cr_table[info.rate_hp] * bw * 2 /
denominator_tbl[info.guard];
ucblock_rate = (1000 * 7 / 8) * cr_table[info.rate_hp] *
bw * 2 / denominator_tbl[info.guard];
}
}
mes_exp = pre_ber_rate < 8192 ? 8 : intlog2(pre_ber_rate) >> 24;
priv->pre_ber_interval =
((1U << mes_exp) * 1000 + (pre_ber_rate / 2)) /
pre_ber_rate;
cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
CXD2880_TNRDMD_CFG_DVBT_VBER_PERIOD,
mes_exp == 8 ? 0 : mes_exp - 12);
mes_exp = intlog2(post_ber_rate) >> 24;
priv->post_ber_interval =
((1U << mes_exp) * 1000 + (post_ber_rate / 2)) /
post_ber_rate;
cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
CXD2880_TNRDMD_CFG_DVBT_BERN_PERIOD,
mes_exp);
mes_exp = intlog2(ucblock_rate) >> 24;
priv->ucblock_interval =
((1U << mes_exp) * 1000 + (ucblock_rate / 2)) /
ucblock_rate;
cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
CXD2880_TNRDMD_CFG_DVBT_PER_MES,
mes_exp);
return 0;
}
static int cxd2880_set_ber_per_period_t2(struct dvb_frontend *fe)
{
int ret;
struct cxd2880_priv *priv;
struct cxd2880_dvbt2_l1pre l1pre;
struct cxd2880_dvbt2_l1post l1post;
struct cxd2880_dvbt2_plp plp;
struct cxd2880_dvbt2_bbheader bbheader;
enum cxd2880_dtv_bandwidth bw = CXD2880_DTV_BW_1_7_MHZ;
u32 pre_ber_rate = 0;
u32 post_ber_rate = 0;
u32 ucblock_rate = 0;
u32 mes_exp = 0;
u32 term_a = 0;
u32 term_b = 0;
u32 denominator = 0;
static const u32 gi_tbl[7] = {32, 64, 128, 256, 8, 152, 76};
static const u8 n_tbl[6] = {8, 2, 4, 16, 1, 1};
static const u8 mode_tbl[6] = {2, 8, 4, 1, 16, 32};
static const u32 kbch_tbl[2][8] = {
{6952, 9472, 10552, 11632, 12352, 13072, 5152, 6232},
{32128, 38608, 42960, 48328, 51568, 53760, 0, 0}
};
if (!fe) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
bw = priv->dvbt2_tune_param.bandwidth;
ret = cxd2880_tnrdmd_dvbt2_mon_l1_pre(&priv->tnrdmd, &l1pre);
if (ret) {
pr_info("l1 pre error\n");
goto error_ber_setting;
}
ret = cxd2880_tnrdmd_dvbt2_mon_active_plp(&priv->tnrdmd,
CXD2880_DVBT2_PLP_DATA, &plp);
if (ret) {
pr_info("plp info error\n");
goto error_ber_setting;
}
ret = cxd2880_tnrdmd_dvbt2_mon_l1_post(&priv->tnrdmd, &l1post);
if (ret) {
pr_info("l1 post error\n");
goto error_ber_setting;
}
term_a =
(mode_tbl[l1pre.fft_mode] * (1024 + gi_tbl[l1pre.gi])) *
(l1pre.num_symbols + n_tbl[l1pre.fft_mode]) + 2048;
if (l1pre.mixed && l1post.fef_intvl) {
term_b = (l1post.fef_length + (l1post.fef_intvl / 2)) /
l1post.fef_intvl;
} else {
term_b = 0;
}
switch (bw) {
case CXD2880_DTV_BW_1_7_MHZ:
denominator = ((term_a + term_b) * 71 + (131 / 2)) / 131;
break;
case CXD2880_DTV_BW_5_MHZ:
denominator = ((term_a + term_b) * 7 + 20) / 40;
break;
case CXD2880_DTV_BW_6_MHZ:
denominator = ((term_a + term_b) * 7 + 24) / 48;
break;
case CXD2880_DTV_BW_7_MHZ:
denominator = ((term_a + term_b) + 4) / 8;
break;
case CXD2880_DTV_BW_8_MHZ:
default:
denominator = ((term_a + term_b) * 7 + 32) / 64;
break;
}
if (plp.til_type && plp.til_len) {
pre_ber_rate =
(plp.num_blocks_max * 1000000 + (denominator / 2)) /
denominator;
pre_ber_rate = (pre_ber_rate + (plp.til_len / 2)) /
plp.til_len;
} else {
pre_ber_rate =
(plp.num_blocks_max * 1000000 + (denominator / 2)) /
denominator;
}
post_ber_rate = pre_ber_rate;
mes_exp = intlog2(pre_ber_rate) >> 24;
priv->pre_ber_interval =
((1U << mes_exp) * 1000 + (pre_ber_rate / 2)) /
pre_ber_rate;
cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
CXD2880_TNRDMD_CFG_DVBT2_LBER_MES,
mes_exp);
mes_exp = intlog2(post_ber_rate) >> 24;
priv->post_ber_interval =
((1U << mes_exp) * 1000 + (post_ber_rate / 2)) /
post_ber_rate;
cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
CXD2880_TNRDMD_CFG_DVBT2_BBER_MES,
mes_exp);
ret = cxd2880_tnrdmd_dvbt2_mon_bbheader(&priv->tnrdmd,
CXD2880_DVBT2_PLP_DATA,
&bbheader);
if (ret) {
pr_info("bb header error\n");
goto error_ucblock_setting;
}
if (bbheader.plp_mode == CXD2880_DVBT2_PLP_MODE_NM) {
if (!bbheader.issy_indicator) {
ucblock_rate =
(pre_ber_rate * kbch_tbl[plp.fec][plp.plp_cr] +
752) / 1504;
} else {
ucblock_rate =
(pre_ber_rate * kbch_tbl[plp.fec][plp.plp_cr] +
764) / 1528;
}
} else if (bbheader.plp_mode == CXD2880_DVBT2_PLP_MODE_HEM) {
ucblock_rate =
(pre_ber_rate * kbch_tbl[plp.fec][plp.plp_cr] + 748) /
1496;
} else {
pr_info("plp mode is not Normal or HEM\n");
goto error_ucblock_setting;
}
mes_exp = intlog2(ucblock_rate) >> 24;
priv->ucblock_interval =
((1U << mes_exp) * 1000 + (ucblock_rate / 2)) /
ucblock_rate;
cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
CXD2880_TNRDMD_CFG_DVBT2_PER_MES,
mes_exp);
return 0;
error_ber_setting:
priv->pre_ber_interval = 1000;
cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
CXD2880_TNRDMD_CFG_DVBT2_LBER_MES, 0);
priv->post_ber_interval = 1000;
cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
CXD2880_TNRDMD_CFG_DVBT2_BBER_MES, 0);
error_ucblock_setting:
priv->ucblock_interval = 1000;
cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
CXD2880_TNRDMD_CFG_DVBT2_PER_MES, 8);
return 0;
}
static int cxd2880_dvbt_tune(struct cxd2880_tnrdmd *tnr_dmd,
struct cxd2880_dvbt_tune_param
*tune_param)
{
int ret;
if (!tnr_dmd || !tune_param)
return -EINVAL;
if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
return -EINVAL;
if (tnr_dmd->state != CXD2880_TNRDMD_STATE_SLEEP &&
tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
return -EINVAL;
atomic_set(&tnr_dmd->cancel, 0);
if (tune_param->bandwidth != CXD2880_DTV_BW_5_MHZ &&
tune_param->bandwidth != CXD2880_DTV_BW_6_MHZ &&
tune_param->bandwidth != CXD2880_DTV_BW_7_MHZ &&
tune_param->bandwidth != CXD2880_DTV_BW_8_MHZ) {
return -ENOTTY;
}
ret = cxd2880_tnrdmd_dvbt_tune1(tnr_dmd, tune_param);
if (ret)
return ret;
usleep_range(CXD2880_TNRDMD_WAIT_AGC_STABLE * 10000,
CXD2880_TNRDMD_WAIT_AGC_STABLE * 10000 + 1000);
return cxd2880_tnrdmd_dvbt_tune2(tnr_dmd, tune_param);
}
static int cxd2880_dvbt2_tune(struct cxd2880_tnrdmd *tnr_dmd,
struct cxd2880_dvbt2_tune_param
*tune_param)
{
int ret;
if (!tnr_dmd || !tune_param)
return -EINVAL;
if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
return -EINVAL;
if (tnr_dmd->state != CXD2880_TNRDMD_STATE_SLEEP &&
tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
return -EINVAL;
atomic_set(&tnr_dmd->cancel, 0);
if (tune_param->bandwidth != CXD2880_DTV_BW_1_7_MHZ &&
tune_param->bandwidth != CXD2880_DTV_BW_5_MHZ &&
tune_param->bandwidth != CXD2880_DTV_BW_6_MHZ &&
tune_param->bandwidth != CXD2880_DTV_BW_7_MHZ &&
tune_param->bandwidth != CXD2880_DTV_BW_8_MHZ) {
return -ENOTTY;
}
if (tune_param->profile != CXD2880_DVBT2_PROFILE_BASE &&
tune_param->profile != CXD2880_DVBT2_PROFILE_LITE)
return -EINVAL;
ret = cxd2880_tnrdmd_dvbt2_tune1(tnr_dmd, tune_param);
if (ret)
return ret;
usleep_range(CXD2880_TNRDMD_WAIT_AGC_STABLE * 10000,
CXD2880_TNRDMD_WAIT_AGC_STABLE * 10000 + 1000);
return cxd2880_tnrdmd_dvbt2_tune2(tnr_dmd, tune_param);
}
static int cxd2880_set_frontend(struct dvb_frontend *fe)
{
int ret;
struct dtv_frontend_properties *c;
struct cxd2880_priv *priv;
enum cxd2880_dtv_bandwidth bw = CXD2880_DTV_BW_1_7_MHZ;
if (!fe) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
c = &fe->dtv_property_cache;
c->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->pre_bit_error.stat[0].uvalue = 0;
c->pre_bit_error.len = 1;
c->pre_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->pre_bit_count.stat[0].uvalue = 0;
c->pre_bit_count.len = 1;
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->post_bit_error.stat[0].uvalue = 0;
c->post_bit_error.len = 1;
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->post_bit_count.stat[0].uvalue = 0;
c->post_bit_count.len = 1;
c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->block_error.stat[0].uvalue = 0;
c->block_error.len = 1;
c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->block_count.stat[0].uvalue = 0;
c->block_count.len = 1;
switch (c->bandwidth_hz) {
case 1712000:
bw = CXD2880_DTV_BW_1_7_MHZ;
break;
case 5000000:
bw = CXD2880_DTV_BW_5_MHZ;
break;
case 6000000:
bw = CXD2880_DTV_BW_6_MHZ;
break;
case 7000000:
bw = CXD2880_DTV_BW_7_MHZ;
break;
case 8000000:
bw = CXD2880_DTV_BW_8_MHZ;
break;
default:
return -EINVAL;
}
priv->s = 0;
pr_info("sys:%d freq:%d bw:%d\n",
c->delivery_system, c->frequency, bw);
mutex_lock(priv->spi_mutex);
if (c->delivery_system == SYS_DVBT) {
priv->tnrdmd.sys = CXD2880_DTV_SYS_DVBT;
priv->dvbt_tune_param.center_freq_khz = c->frequency / 1000;
priv->dvbt_tune_param.bandwidth = bw;
priv->dvbt_tune_param.profile = CXD2880_DVBT_PROFILE_HP;
ret = cxd2880_dvbt_tune(&priv->tnrdmd,
&priv->dvbt_tune_param);
} else if (c->delivery_system == SYS_DVBT2) {
priv->tnrdmd.sys = CXD2880_DTV_SYS_DVBT2;
priv->dvbt2_tune_param.center_freq_khz = c->frequency / 1000;
priv->dvbt2_tune_param.bandwidth = bw;
priv->dvbt2_tune_param.data_plp_id = (u16)c->stream_id;
priv->dvbt2_tune_param.profile = CXD2880_DVBT2_PROFILE_BASE;
ret = cxd2880_dvbt2_tune(&priv->tnrdmd,
&priv->dvbt2_tune_param);
} else {
pr_err("invalid system\n");
mutex_unlock(priv->spi_mutex);
return -EINVAL;
}
mutex_unlock(priv->spi_mutex);
pr_info("tune result %d\n", ret);
return ret;
}
static int cxd2880_get_stats(struct dvb_frontend *fe,
enum fe_status status)
{
struct cxd2880_priv *priv = NULL;
struct dtv_frontend_properties *c = NULL;
u32 pre_bit_err = 0, pre_bit_count = 0;
u32 post_bit_err = 0, post_bit_count = 0;
u32 block_err = 0, block_count = 0;
int ret;
if (!fe) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
c = &fe->dtv_property_cache;
if (!(status & FE_HAS_LOCK) || !(status & FE_HAS_CARRIER)) {
c->pre_bit_error.len = 1;
c->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->pre_bit_count.len = 1;
c->pre_bit_count.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;
c->block_error.len = 1;
c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->block_count.len = 1;
c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
return 0;
}
if (time_after(jiffies, priv->pre_ber_update)) {
priv->pre_ber_update =
jiffies + msecs_to_jiffies(priv->pre_ber_interval);
if (c->delivery_system == SYS_DVBT) {
mutex_lock(priv->spi_mutex);
ret = cxd2880_pre_bit_err_t(&priv->tnrdmd,
&pre_bit_err,
&pre_bit_count);
mutex_unlock(priv->spi_mutex);
} else if (c->delivery_system == SYS_DVBT2) {
mutex_lock(priv->spi_mutex);
ret = cxd2880_pre_bit_err_t2(&priv->tnrdmd,
&pre_bit_err,
&pre_bit_count);
mutex_unlock(priv->spi_mutex);
} else {
return -EINVAL;
}
if (!ret) {
c->pre_bit_error.len = 1;
c->pre_bit_error.stat[0].scale = FE_SCALE_COUNTER;
c->pre_bit_error.stat[0].uvalue += pre_bit_err;
c->pre_bit_count.len = 1;
c->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER;
c->pre_bit_count.stat[0].uvalue += pre_bit_count;
} else {
c->pre_bit_error.len = 1;
c->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->pre_bit_count.len = 1;
c->pre_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
pr_debug("pre_bit_error_t failed %d\n", ret);
}
}
if (time_after(jiffies, priv->post_ber_update)) {
priv->post_ber_update =
jiffies + msecs_to_jiffies(priv->post_ber_interval);
if (c->delivery_system == SYS_DVBT) {
mutex_lock(priv->spi_mutex);
ret = cxd2880_post_bit_err_t(&priv->tnrdmd,
&post_bit_err,
&post_bit_count);
mutex_unlock(priv->spi_mutex);
} else if (c->delivery_system == SYS_DVBT2) {
mutex_lock(priv->spi_mutex);
ret = cxd2880_post_bit_err_t2(&priv->tnrdmd,
&post_bit_err,
&post_bit_count);
mutex_unlock(priv->spi_mutex);
} else {
return -EINVAL;
}
if (!ret) {
c->post_bit_error.len = 1;
c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_error.stat[0].uvalue += post_bit_err;
c->post_bit_count.len = 1;
c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
c->post_bit_count.stat[0].uvalue += post_bit_count;
} else {
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;
pr_debug("post_bit_err_t %d\n", ret);
}
}
if (time_after(jiffies, priv->ucblock_update)) {
priv->ucblock_update =
jiffies + msecs_to_jiffies(priv->ucblock_interval);
if (c->delivery_system == SYS_DVBT) {
mutex_lock(priv->spi_mutex);
ret = cxd2880_read_block_err_t(&priv->tnrdmd,
&block_err,
&block_count);
mutex_unlock(priv->spi_mutex);
} else if (c->delivery_system == SYS_DVBT2) {
mutex_lock(priv->spi_mutex);
ret = cxd2880_read_block_err_t2(&priv->tnrdmd,
&block_err,
&block_count);
mutex_unlock(priv->spi_mutex);
} else {
return -EINVAL;
}
if (!ret) {
c->block_error.len = 1;
c->block_error.stat[0].scale = FE_SCALE_COUNTER;
c->block_error.stat[0].uvalue += block_err;
c->block_count.len = 1;
c->block_count.stat[0].scale = FE_SCALE_COUNTER;
c->block_count.stat[0].uvalue += block_count;
} else {
c->block_error.len = 1;
c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->block_count.len = 1;
c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
pr_debug("read_block_err_t %d\n", ret);
}
}
return 0;
}
static int cxd2880_check_l1post_plp(struct dvb_frontend *fe)
{
u8 valid = 0;
u8 plp_not_found;
int ret;
struct cxd2880_priv *priv = NULL;
if (!fe) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
ret = cxd2880_tnrdmd_dvbt2_check_l1post_valid(&priv->tnrdmd,
&valid);
if (ret)
return ret;
if (!valid)
return -EAGAIN;
ret = cxd2880_tnrdmd_dvbt2_mon_data_plp_error(&priv->tnrdmd,
&plp_not_found);
if (ret)
return ret;
if (plp_not_found) {
priv->dvbt2_tune_param.tune_info =
CXD2880_TNRDMD_DVBT2_TUNE_INFO_INVALID_PLP_ID;
} else {
priv->dvbt2_tune_param.tune_info =
CXD2880_TNRDMD_DVBT2_TUNE_INFO_OK;
}
return 0;
}
static int cxd2880_read_status(struct dvb_frontend *fe,
enum fe_status *status)
{
int ret;
u8 sync = 0;
u8 lock = 0;
u8 unlock = 0;
struct cxd2880_priv *priv = NULL;
struct dtv_frontend_properties *c = NULL;
if (!fe || !status) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
c = &fe->dtv_property_cache;
*status = 0;
if (priv->tnrdmd.state == CXD2880_TNRDMD_STATE_ACTIVE) {
mutex_lock(priv->spi_mutex);
if (c->delivery_system == SYS_DVBT) {
ret = cxd2880_tnrdmd_dvbt_mon_sync_stat(&priv->tnrdmd,
&sync,
&lock,
&unlock);
} else if (c->delivery_system == SYS_DVBT2) {
ret = cxd2880_tnrdmd_dvbt2_mon_sync_stat(&priv->tnrdmd,
&sync,
&lock,
&unlock);
} else {
pr_err("invalid system");
mutex_unlock(priv->spi_mutex);
return -EINVAL;
}
mutex_unlock(priv->spi_mutex);
if (ret) {
pr_err("failed. sys = %d\n", priv->tnrdmd.sys);
return ret;
}
if (sync == 6) {
*status = FE_HAS_SIGNAL |
FE_HAS_CARRIER;
}
if (lock)
*status |= FE_HAS_VITERBI |
FE_HAS_SYNC |
FE_HAS_LOCK;
}
pr_debug("status %d\n", *status);
if (priv->s == 0 && (*status & FE_HAS_LOCK) &&
(*status & FE_HAS_CARRIER)) {
mutex_lock(priv->spi_mutex);
if (c->delivery_system == SYS_DVBT) {
ret = cxd2880_set_ber_per_period_t(fe);
priv->s = *status;
} else if (c->delivery_system == SYS_DVBT2) {
ret = cxd2880_check_l1post_plp(fe);
if (!ret) {
ret = cxd2880_set_ber_per_period_t2(fe);
priv->s = *status;
}
} else {
pr_err("invalid system\n");
mutex_unlock(priv->spi_mutex);
return -EINVAL;
}
mutex_unlock(priv->spi_mutex);
}
cxd2880_get_stats(fe, *status);
return 0;
}
static int cxd2880_tune(struct dvb_frontend *fe,
bool retune,
unsigned int mode_flags,
unsigned int *delay,
enum fe_status *status)
{
int ret;
if (!fe || !delay || !status) {
pr_err("invalid arg.");
return -EINVAL;
}
if (retune) {
ret = cxd2880_set_frontend(fe);
if (ret) {
pr_err("cxd2880_set_frontend failed %d\n", ret);
return ret;
}
}
*delay = HZ / 5;
return cxd2880_read_status(fe, status);
}
static int cxd2880_get_frontend_t(struct dvb_frontend *fe,
struct dtv_frontend_properties *c)
{
int ret;
struct cxd2880_priv *priv = NULL;
enum cxd2880_dvbt_mode mode = CXD2880_DVBT_MODE_2K;
enum cxd2880_dvbt_guard guard = CXD2880_DVBT_GUARD_1_32;
struct cxd2880_dvbt_tpsinfo tps;
enum cxd2880_tnrdmd_spectrum_sense sense;
u16 snr = 0;
int strength = 0;
if (!fe || !c) {
pr_err("invalid arg\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
mutex_lock(priv->spi_mutex);
ret = cxd2880_tnrdmd_dvbt_mon_mode_guard(&priv->tnrdmd,
&mode, &guard);
mutex_unlock(priv->spi_mutex);
if (!ret) {
switch (mode) {
case CXD2880_DVBT_MODE_2K:
c->transmission_mode = TRANSMISSION_MODE_2K;
break;
case CXD2880_DVBT_MODE_8K:
c->transmission_mode = TRANSMISSION_MODE_8K;
break;
default:
c->transmission_mode = TRANSMISSION_MODE_2K;
pr_debug("transmission mode is invalid %d\n", mode);
break;
}
switch (guard) {
case CXD2880_DVBT_GUARD_1_32:
c->guard_interval = GUARD_INTERVAL_1_32;
break;
case CXD2880_DVBT_GUARD_1_16:
c->guard_interval = GUARD_INTERVAL_1_16;
break;
case CXD2880_DVBT_GUARD_1_8:
c->guard_interval = GUARD_INTERVAL_1_8;
break;
case CXD2880_DVBT_GUARD_1_4:
c->guard_interval = GUARD_INTERVAL_1_4;
break;
default:
c->guard_interval = GUARD_INTERVAL_1_32;
pr_debug("guard interval is invalid %d\n",
guard);
break;
}
} else {
c->transmission_mode = TRANSMISSION_MODE_2K;
c->guard_interval = GUARD_INTERVAL_1_32;
pr_debug("ModeGuard err %d\n", ret);
}
mutex_lock(priv->spi_mutex);
ret = cxd2880_tnrdmd_dvbt_mon_tps_info(&priv->tnrdmd, &tps);
mutex_unlock(priv->spi_mutex);
if (!ret) {
switch (tps.hierarchy) {
case CXD2880_DVBT_HIERARCHY_NON:
c->hierarchy = HIERARCHY_NONE;
break;
case CXD2880_DVBT_HIERARCHY_1:
c->hierarchy = HIERARCHY_1;
break;
case CXD2880_DVBT_HIERARCHY_2:
c->hierarchy = HIERARCHY_2;
break;
case CXD2880_DVBT_HIERARCHY_4:
c->hierarchy = HIERARCHY_4;
break;
default:
c->hierarchy = HIERARCHY_NONE;
pr_debug("TPSInfo hierarchy is invalid %d\n",
tps.hierarchy);
break;
}
switch (tps.rate_hp) {
case CXD2880_DVBT_CODERATE_1_2:
c->code_rate_HP = FEC_1_2;
break;
case CXD2880_DVBT_CODERATE_2_3:
c->code_rate_HP = FEC_2_3;
break;
case CXD2880_DVBT_CODERATE_3_4:
c->code_rate_HP = FEC_3_4;
break;
case CXD2880_DVBT_CODERATE_5_6:
c->code_rate_HP = FEC_5_6;
break;
case CXD2880_DVBT_CODERATE_7_8:
c->code_rate_HP = FEC_7_8;
break;
default:
c->code_rate_HP = FEC_NONE;
pr_debug("TPSInfo rateHP is invalid %d\n",
tps.rate_hp);
break;
}
switch (tps.rate_lp) {
case CXD2880_DVBT_CODERATE_1_2:
c->code_rate_LP = FEC_1_2;
break;
case CXD2880_DVBT_CODERATE_2_3:
c->code_rate_LP = FEC_2_3;
break;
case CXD2880_DVBT_CODERATE_3_4:
c->code_rate_LP = FEC_3_4;
break;
case CXD2880_DVBT_CODERATE_5_6:
c->code_rate_LP = FEC_5_6;
break;
case CXD2880_DVBT_CODERATE_7_8:
c->code_rate_LP = FEC_7_8;
break;
default:
c->code_rate_LP = FEC_NONE;
pr_debug("TPSInfo rateLP is invalid %d\n",
tps.rate_lp);
break;
}
switch (tps.constellation) {
case CXD2880_DVBT_CONSTELLATION_QPSK:
c->modulation = QPSK;
break;
case CXD2880_DVBT_CONSTELLATION_16QAM:
c->modulation = QAM_16;
break;
case CXD2880_DVBT_CONSTELLATION_64QAM:
c->modulation = QAM_64;
break;
default:
c->modulation = QPSK;
pr_debug("TPSInfo constellation is invalid %d\n",
tps.constellation);
break;
}
} else {
c->hierarchy = HIERARCHY_NONE;
c->code_rate_HP = FEC_NONE;
c->code_rate_LP = FEC_NONE;
c->modulation = QPSK;
pr_debug("TPS info err %d\n", ret);
}
mutex_lock(priv->spi_mutex);
ret = cxd2880_tnrdmd_dvbt_mon_spectrum_sense(&priv->tnrdmd, &sense);
mutex_unlock(priv->spi_mutex);
if (!ret) {
switch (sense) {
case CXD2880_TNRDMD_SPECTRUM_NORMAL:
c->inversion = INVERSION_OFF;
break;
case CXD2880_TNRDMD_SPECTRUM_INV:
c->inversion = INVERSION_ON;
break;
default:
c->inversion = INVERSION_OFF;
pr_debug("spectrum sense is invalid %d\n", sense);
break;
}
} else {
c->inversion = INVERSION_OFF;
pr_debug("spectrum_sense %d\n", ret);
}
mutex_lock(priv->spi_mutex);
ret = cxd2880_tnrdmd_mon_rf_lvl(&priv->tnrdmd, &strength);
mutex_unlock(priv->spi_mutex);
if (!ret) {
c->strength.len = 1;
c->strength.stat[0].scale = FE_SCALE_DECIBEL;
c->strength.stat[0].svalue = strength;
} else {
c->strength.len = 1;
c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
pr_debug("mon_rf_lvl %d\n", ret);
}
ret = cxd2880_read_snr(fe, &snr);
if (!ret) {
c->cnr.len = 1;
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
c->cnr.stat[0].svalue = snr;
} else {
c->cnr.len = 1;
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
pr_debug("read_snr %d\n", ret);
}
return 0;
}
static int cxd2880_get_frontend_t2(struct dvb_frontend *fe,
struct dtv_frontend_properties *c)
{
int ret;
struct cxd2880_priv *priv = NULL;
struct cxd2880_dvbt2_l1pre l1pre;
enum cxd2880_dvbt2_plp_code_rate coderate;
enum cxd2880_dvbt2_plp_constell qam;
enum cxd2880_tnrdmd_spectrum_sense sense;
u16 snr = 0;
int strength = 0;
if (!fe || !c) {
pr_err("invalid arg.\n");
return -EINVAL;
}
priv = fe->demodulator_priv;
mutex_lock(priv->spi_mutex);
ret = cxd2880_tnrdmd_dvbt2_mon_l1_pre(&priv->tnrdmd, &l1pre);
mutex_unlock(priv->spi_mutex);
if (!ret) {
switch (l1pre.fft_mode) {
case CXD2880_DVBT2_M2K:
c->transmission_mode = TRANSMISSION_MODE_2K;
break;
case CXD2880_DVBT2_M8K:
c->transmission_mode = TRANSMISSION_MODE_8K;
break;
case CXD2880_DVBT2_M4K:
c->transmission_mode = TRANSMISSION_MODE_4K;
break;
case CXD2880_DVBT2_M1K:
c->transmission_mode = TRANSMISSION_MODE_1K;
break;
case CXD2880_DVBT2_M16K:
c->transmission_mode = TRANSMISSION_MODE_16K;
break;
case CXD2880_DVBT2_M32K:
c->transmission_mode = TRANSMISSION_MODE_32K;
break;
default:
c->transmission_mode = TRANSMISSION_MODE_2K;
pr_debug("L1Pre fft_mode is invalid %d\n",
l1pre.fft_mode);
break;
}
switch (l1pre.gi) {
case CXD2880_DVBT2_G1_32:
c->guard_interval = GUARD_INTERVAL_1_32;
break;
case CXD2880_DVBT2_G1_16:
c->guard_interval = GUARD_INTERVAL_1_16;
break;
case CXD2880_DVBT2_G1_8:
c->guard_interval = GUARD_INTERVAL_1_8;
break;
case CXD2880_DVBT2_G1_4:
c->guard_interval = GUARD_INTERVAL_1_4;
break;
case CXD2880_DVBT2_G1_128:
c->guard_interval = GUARD_INTERVAL_1_128;
break;
case CXD2880_DVBT2_G19_128:
c->guard_interval = GUARD_INTERVAL_19_128;
break;
case CXD2880_DVBT2_G19_256:
c->guard_interval = GUARD_INTERVAL_19_256;
break;
default:
c->guard_interval = GUARD_INTERVAL_1_32;
pr_debug("L1Pre guard interval is invalid %d\n",
l1pre.gi);
break;
}
} else {
c->transmission_mode = TRANSMISSION_MODE_2K;
c->guard_interval = GUARD_INTERVAL_1_32;
pr_debug("L1Pre err %d\n", ret);
}
mutex_lock(priv->spi_mutex);
ret = cxd2880_tnrdmd_dvbt2_mon_code_rate(&priv->tnrdmd,
CXD2880_DVBT2_PLP_DATA,
&coderate);
mutex_unlock(priv->spi_mutex);
if (!ret) {
switch (coderate) {
case CXD2880_DVBT2_R1_2:
c->fec_inner = FEC_1_2;
break;
case CXD2880_DVBT2_R3_5:
c->fec_inner = FEC_3_5;
break;
case CXD2880_DVBT2_R2_3:
c->fec_inner = FEC_2_3;
break;
case CXD2880_DVBT2_R3_4:
c->fec_inner = FEC_3_4;
break;
case CXD2880_DVBT2_R4_5:
c->fec_inner = FEC_4_5;
break;
case CXD2880_DVBT2_R5_6:
c->fec_inner = FEC_5_6;
break;
default:
c->fec_inner = FEC_NONE;
pr_debug("CodeRate is invalid %d\n", coderate);
break;
}
} else {
c->fec_inner = FEC_NONE;
pr_debug("CodeRate %d\n", ret);
}
mutex_lock(priv->spi_mutex);
ret = cxd2880_tnrdmd_dvbt2_mon_qam(&priv->tnrdmd,
CXD2880_DVBT2_PLP_DATA,
&qam);
mutex_unlock(priv->spi_mutex);
if (!ret) {
switch (qam) {
case CXD2880_DVBT2_QPSK:
c->modulation = QPSK;
break;
case CXD2880_DVBT2_QAM16:
c->modulation = QAM_16;
break;
case CXD2880_DVBT2_QAM64:
c->modulation = QAM_64;
break;
case CXD2880_DVBT2_QAM256:
c->modulation = QAM_256;
break;
default:
c->modulation = QPSK;
pr_debug("QAM is invalid %d\n", qam);
break;
}
} else {
c->modulation = QPSK;
pr_debug("QAM %d\n", ret);
}
mutex_lock(priv->spi_mutex);
ret = cxd2880_tnrdmd_dvbt2_mon_spectrum_sense(&priv->tnrdmd, &sense);
mutex_unlock(priv->spi_mutex);
if (!ret) {
switch (sense) {
case CXD2880_TNRDMD_SPECTRUM_NORMAL:
c->inversion = INVERSION_OFF;
break;
case CXD2880_TNRDMD_SPECTRUM_INV:
c->inversion = INVERSION_ON;
break;
default:
c->inversion = INVERSION_OFF;
pr_debug("spectrum sense is invalid %d\n", sense);
break;
}
} else {
c->inversion = INVERSION_OFF;
pr_debug("SpectrumSense %d\n", ret);
}
mutex_lock(priv->spi_mutex);
ret = cxd2880_tnrdmd_mon_rf_lvl(&priv->tnrdmd, &strength);
mutex_unlock(priv->spi_mutex);
if (!ret) {
c->strength.len = 1;
c->strength.stat[0].scale = FE_SCALE_DECIBEL;
c->strength.stat[0].svalue = strength;
} else {
c->strength.len = 1;
c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
pr_debug("mon_rf_lvl %d\n", ret);
}
ret = cxd2880_read_snr(fe, &snr);
if (!ret) {
c->cnr.len = 1;
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
c->cnr.stat[0].svalue = snr;
} else {
c->cnr.len = 1;
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
pr_debug("read_snr %d\n", ret);
}
return 0;
}
static int cxd2880_get_frontend(struct dvb_frontend *fe,
struct dtv_frontend_properties *props)
{
int ret;
if (!fe || !props) {
pr_err("invalid arg.");
return -EINVAL;
}
pr_debug("system=%d\n", fe->dtv_property_cache.delivery_system);
switch (fe->dtv_property_cache.delivery_system) {
case SYS_DVBT:
ret = cxd2880_get_frontend_t(fe, props);
break;
case SYS_DVBT2:
ret = cxd2880_get_frontend_t2(fe, props);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static enum dvbfe_algo cxd2880_get_frontend_algo(struct dvb_frontend *fe)
{
return DVBFE_ALGO_HW;
}
static struct dvb_frontend_ops cxd2880_dvbt_t2_ops = {
.info = {
.name = "Sony CXD2880",
.frequency_min_hz = 174 * MHz,
.frequency_max_hz = 862 * MHz,
.frequency_stepsize_hz = 1 * kHz,
.caps = FE_CAN_INVERSION_AUTO |
FE_CAN_FEC_1_2 |
FE_CAN_FEC_2_3 |
FE_CAN_FEC_3_4 |
FE_CAN_FEC_4_5 |
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_QAM_AUTO |
FE_CAN_TRANSMISSION_MODE_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO |
FE_CAN_2G_MODULATION |
FE_CAN_RECOVER |
FE_CAN_MUTE_TS,
},
.delsys = { SYS_DVBT, SYS_DVBT2 },
.release = cxd2880_release,
.init = cxd2880_init,
.sleep = cxd2880_sleep,
.tune = cxd2880_tune,
.set_frontend = cxd2880_set_frontend,
.get_frontend = cxd2880_get_frontend,
.read_status = cxd2880_read_status,
.read_ber = cxd2880_read_ber,
.read_signal_strength = cxd2880_read_signal_strength,
.read_snr = cxd2880_read_snr,
.read_ucblocks = cxd2880_read_ucblocks,
.get_frontend_algo = cxd2880_get_frontend_algo,
};
struct dvb_frontend *cxd2880_attach(struct dvb_frontend *fe,
struct cxd2880_config *cfg)
{
int ret;
enum cxd2880_tnrdmd_chip_id chipid =
CXD2880_TNRDMD_CHIP_ID_UNKNOWN;
static struct cxd2880_priv *priv;
u8 data = 0;
if (!fe) {
pr_err("invalid arg.\n");
return NULL;
}
priv = kzalloc(sizeof(struct cxd2880_priv), GFP_KERNEL);
if (!priv)
return NULL;
priv->spi = cfg->spi;
priv->spi_mutex = cfg->spi_mutex;
priv->spi_device.spi = cfg->spi;
memcpy(&fe->ops, &cxd2880_dvbt_t2_ops,
sizeof(struct dvb_frontend_ops));
ret = cxd2880_spi_device_initialize(&priv->spi_device,
CXD2880_SPI_MODE_0,
55000000);
if (ret) {
pr_err("spi_device_initialize failed. %d\n", ret);
kfree(priv);
return NULL;
}
ret = cxd2880_spi_device_create_spi(&priv->cxd2880_spi,
&priv->spi_device);
if (ret) {
pr_err("spi_device_create_spi failed. %d\n", ret);
kfree(priv);
return NULL;
}
ret = cxd2880_io_spi_create(&priv->regio, &priv->cxd2880_spi, 0);
if (ret) {
pr_err("io_spi_create failed. %d\n", ret);
kfree(priv);
return NULL;
}
ret = priv->regio.write_reg(&priv->regio,
CXD2880_IO_TGT_SYS, 0x00, 0x00);
if (ret) {
pr_err("set bank to 0x00 failed.\n");
kfree(priv);
return NULL;
}
ret = priv->regio.read_regs(&priv->regio,
CXD2880_IO_TGT_SYS, 0xfd, &data, 1);
if (ret) {
pr_err("read chip id failed.\n");
kfree(priv);
return NULL;
}
chipid = (enum cxd2880_tnrdmd_chip_id)data;
if (chipid != CXD2880_TNRDMD_CHIP_ID_CXD2880_ES1_0X &&
chipid != CXD2880_TNRDMD_CHIP_ID_CXD2880_ES1_11) {
pr_err("chip id invalid.\n");
kfree(priv);
return NULL;
}
fe->demodulator_priv = priv;
pr_info("CXD2880 driver version: Ver %s\n",
CXD2880_TNRDMD_DRIVER_VERSION);
return fe;
}
EXPORT_SYMBOL(cxd2880_attach);
MODULE_DESCRIPTION("Sony CXD2880 DVB-T2/T tuner + demod driver");
MODULE_AUTHOR("Sony Semiconductor Solutions Corporation");
MODULE_LICENSE("GPL v2");
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