root/drivers/media/dvb-frontends/cxd2880/cxd2880_tnrdmd_dvbt2_mon.c
// SPDX-License-Identifier: GPL-2.0
/*
 * cxd2880_tnrdmd_dvbt2_mon.c
 * Sony CXD2880 DVB-T2/T tuner + demodulator driver
 * DVB-T2 monitor functions
 *
 * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
 */

#include "cxd2880_tnrdmd_mon.h"
#include "cxd2880_tnrdmd_dvbt2.h"
#include "cxd2880_tnrdmd_dvbt2_mon.h"

#include <linux/int_log.h>

static const int ref_dbm_1000[4][8] = {
        {-96000, -95000, -94000, -93000, -92000, -92000, -98000, -97000},
        {-91000, -89000, -88000, -87000, -86000, -86000, -93000, -92000},
        {-86000, -85000, -83000, -82000, -81000, -80000, -89000, -88000},
        {-82000, -80000, -78000, -76000, -75000, -74000, -86000, -84000},
};

int cxd2880_tnrdmd_dvbt2_mon_sync_stat(struct cxd2880_tnrdmd
                                       *tnr_dmd, u8 *sync_stat,
                                       u8 *ts_lock_stat,
                                       u8 *unlock_detected)
{
        u8 data;
        int ret;

        if (!tnr_dmd || !sync_stat || !ts_lock_stat || !unlock_detected)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret)
                return ret;

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x10, &data, sizeof(data));
        if (ret)
                return ret;

        *sync_stat = data & 0x07;
        *ts_lock_stat = ((data & 0x20) ? 1 : 0);
        *unlock_detected = ((data & 0x10) ? 1 : 0);

        if (*sync_stat == 0x07)
                return -EAGAIN;

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_sync_stat_sub(struct cxd2880_tnrdmd
                                           *tnr_dmd,
                                           u8 *sync_stat,
                                           u8 *unlock_detected)
{
        u8 ts_lock_stat = 0;

        if (!tnr_dmd || !sync_stat || !unlock_detected)
                return -EINVAL;

        if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
                return -EINVAL;

        return cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd->diver_sub,
                                                  sync_stat,
                                                  &ts_lock_stat,
                                                  unlock_detected);
}

int cxd2880_tnrdmd_dvbt2_mon_carrier_offset(struct cxd2880_tnrdmd
                                            *tnr_dmd, int *offset)
{
        u8 data[4];
        u32 ctl_val = 0;
        u8 sync_state = 0;
        u8 ts_lock = 0;
        u8 unlock_detected = 0;
        int ret;

        if (!tnr_dmd || !offset)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd, &sync_state,
                                               &ts_lock,
                                               &unlock_detected);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (sync_state != 6) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x30, data, sizeof(data));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        slvt_unfreeze_reg(tnr_dmd);

        ctl_val =
            ((data[0] & 0x0f) << 24) | (data[1] << 16) | (data[2] << 8)
            | (data[3]);
        *offset = cxd2880_convert2s_complement(ctl_val, 28);

        switch (tnr_dmd->bandwidth) {
        case CXD2880_DTV_BW_1_7_MHZ:
                *offset = -1 * ((*offset) / 582);
                break;
        case CXD2880_DTV_BW_5_MHZ:
        case CXD2880_DTV_BW_6_MHZ:
        case CXD2880_DTV_BW_7_MHZ:
        case CXD2880_DTV_BW_8_MHZ:
                *offset = -1 * ((*offset) * tnr_dmd->bandwidth / 940);
                break;
        default:
                return -EINVAL;
        }

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_carrier_offset_sub(struct
                                                cxd2880_tnrdmd
                                                *tnr_dmd,
                                                int *offset)
{
        if (!tnr_dmd || !offset)
                return -EINVAL;

        if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
                return -EINVAL;

        return cxd2880_tnrdmd_dvbt2_mon_carrier_offset(tnr_dmd->diver_sub,
                                                       offset);
}

int cxd2880_tnrdmd_dvbt2_mon_l1_pre(struct cxd2880_tnrdmd *tnr_dmd,
                                    struct cxd2880_dvbt2_l1pre
                                    *l1_pre)
{
        u8 data[37];
        u8 sync_state = 0;
        u8 ts_lock = 0;
        u8 unlock_detected = 0;
        u8 version = 0;
        enum cxd2880_dvbt2_profile profile;
        int ret;

        if (!tnr_dmd || !l1_pre)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd, &sync_state,
                                               &ts_lock,
                                               &unlock_detected);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (sync_state < 5) {
                if (tnr_dmd->diver_mode ==
                    CXD2880_TNRDMD_DIVERMODE_MAIN) {
                        ret =
                            cxd2880_tnrdmd_dvbt2_mon_sync_stat_sub
                            (tnr_dmd, &sync_state, &unlock_detected);
                        if (ret) {
                                slvt_unfreeze_reg(tnr_dmd);
                                return ret;
                        }

                        if (sync_state < 5) {
                                slvt_unfreeze_reg(tnr_dmd);
                                return -EAGAIN;
                        }
                } else {
                        slvt_unfreeze_reg(tnr_dmd);
                        return -EAGAIN;
                }
        }

        ret = cxd2880_tnrdmd_dvbt2_mon_profile(tnr_dmd, &profile);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x61, data, sizeof(data));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }
        slvt_unfreeze_reg(tnr_dmd);

        l1_pre->type = (enum cxd2880_dvbt2_l1pre_type)data[0];
        l1_pre->bw_ext = data[1] & 0x01;
        l1_pre->s1 = (enum cxd2880_dvbt2_s1)(data[2] & 0x07);
        l1_pre->s2 = data[3] & 0x0f;
        l1_pre->l1_rep = data[4] & 0x01;
        l1_pre->gi = (enum cxd2880_dvbt2_guard)(data[5] & 0x07);
        l1_pre->papr = (enum cxd2880_dvbt2_papr)(data[6] & 0x0f);
        l1_pre->mod =
            (enum cxd2880_dvbt2_l1post_constell)(data[7] & 0x0f);
        l1_pre->cr = (enum cxd2880_dvbt2_l1post_cr)(data[8] & 0x03);
        l1_pre->fec =
            (enum cxd2880_dvbt2_l1post_fec_type)(data[9] & 0x03);
        l1_pre->l1_post_size = (data[10] & 0x03) << 16;
        l1_pre->l1_post_size |= (data[11]) << 8;
        l1_pre->l1_post_size |= (data[12]);
        l1_pre->l1_post_info_size = (data[13] & 0x03) << 16;
        l1_pre->l1_post_info_size |= (data[14]) << 8;
        l1_pre->l1_post_info_size |= (data[15]);
        l1_pre->pp = (enum cxd2880_dvbt2_pp)(data[16] & 0x0f);
        l1_pre->tx_id_availability = data[17];
        l1_pre->cell_id = (data[18] << 8);
        l1_pre->cell_id |= (data[19]);
        l1_pre->network_id = (data[20] << 8);
        l1_pre->network_id |= (data[21]);
        l1_pre->sys_id = (data[22] << 8);
        l1_pre->sys_id |= (data[23]);
        l1_pre->num_frames = data[24];
        l1_pre->num_symbols = (data[25] & 0x0f) << 8;
        l1_pre->num_symbols |= data[26];
        l1_pre->regen = data[27] & 0x07;
        l1_pre->post_ext = data[28] & 0x01;
        l1_pre->num_rf_freqs = data[29] & 0x07;
        l1_pre->rf_idx = data[30] & 0x07;
        version = (data[31] & 0x03) << 2;
        version |= (data[32] & 0xc0) >> 6;
        l1_pre->t2_version = (enum cxd2880_dvbt2_version)version;
        l1_pre->l1_post_scrambled = (data[32] & 0x20) >> 5;
        l1_pre->t2_base_lite = (data[32] & 0x10) >> 4;
        l1_pre->crc32 = (data[33] << 24);
        l1_pre->crc32 |= (data[34] << 16);
        l1_pre->crc32 |= (data[35] << 8);
        l1_pre->crc32 |= data[36];

        if (profile == CXD2880_DVBT2_PROFILE_BASE) {
                switch ((l1_pre->s2 >> 1)) {
                case CXD2880_DVBT2_BASE_S2_M1K_G_ANY:
                        l1_pre->fft_mode = CXD2880_DVBT2_M1K;
                        break;
                case CXD2880_DVBT2_BASE_S2_M2K_G_ANY:
                        l1_pre->fft_mode = CXD2880_DVBT2_M2K;
                        break;
                case CXD2880_DVBT2_BASE_S2_M4K_G_ANY:
                        l1_pre->fft_mode = CXD2880_DVBT2_M4K;
                        break;
                case CXD2880_DVBT2_BASE_S2_M8K_G_DVBT:
                case CXD2880_DVBT2_BASE_S2_M8K_G_DVBT2:
                        l1_pre->fft_mode = CXD2880_DVBT2_M8K;
                        break;
                case CXD2880_DVBT2_BASE_S2_M16K_G_ANY:
                        l1_pre->fft_mode = CXD2880_DVBT2_M16K;
                        break;
                case CXD2880_DVBT2_BASE_S2_M32K_G_DVBT:
                case CXD2880_DVBT2_BASE_S2_M32K_G_DVBT2:
                        l1_pre->fft_mode = CXD2880_DVBT2_M32K;
                        break;
                default:
                        return -EAGAIN;
                }
        } else if (profile == CXD2880_DVBT2_PROFILE_LITE) {
                switch ((l1_pre->s2 >> 1)) {
                case CXD2880_DVBT2_LITE_S2_M2K_G_ANY:
                        l1_pre->fft_mode = CXD2880_DVBT2_M2K;
                        break;
                case CXD2880_DVBT2_LITE_S2_M4K_G_ANY:
                        l1_pre->fft_mode = CXD2880_DVBT2_M4K;
                        break;
                case CXD2880_DVBT2_LITE_S2_M8K_G_DVBT:
                case CXD2880_DVBT2_LITE_S2_M8K_G_DVBT2:
                        l1_pre->fft_mode = CXD2880_DVBT2_M8K;
                        break;
                case CXD2880_DVBT2_LITE_S2_M16K_G_DVBT:
                case CXD2880_DVBT2_LITE_S2_M16K_G_DVBT2:
                        l1_pre->fft_mode = CXD2880_DVBT2_M16K;
                        break;
                default:
                        return -EAGAIN;
                }
        } else {
                return -EAGAIN;
        }

        l1_pre->mixed = l1_pre->s2 & 0x01;

        return ret;
}

int cxd2880_tnrdmd_dvbt2_mon_version(struct cxd2880_tnrdmd
                                     *tnr_dmd,
                                     enum cxd2880_dvbt2_version
                                     *ver)
{
        u8 data[2];
        u8 sync_state = 0;
        u8 ts_lock = 0;
        u8 unlock_detected = 0;
        u8 version = 0;
        int ret;

        if (!tnr_dmd || !ver)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd, &sync_state,
                                               &ts_lock,
                                               &unlock_detected);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (sync_state < 5) {
                if (tnr_dmd->diver_mode ==
                    CXD2880_TNRDMD_DIVERMODE_MAIN) {
                        ret =
                            cxd2880_tnrdmd_dvbt2_mon_sync_stat_sub
                            (tnr_dmd, &sync_state, &unlock_detected);
                        if (ret) {
                                slvt_unfreeze_reg(tnr_dmd);
                                return ret;
                        }

                        if (sync_state < 5) {
                                slvt_unfreeze_reg(tnr_dmd);
                                return -EAGAIN;
                        }
                } else {
                        slvt_unfreeze_reg(tnr_dmd);
                        return -EAGAIN;
                }
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x80, data, sizeof(data));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        slvt_unfreeze_reg(tnr_dmd);

        version = ((data[0] & 0x03) << 2);
        version |= ((data[1] & 0xc0) >> 6);
        *ver = (enum cxd2880_dvbt2_version)version;

        return ret;
}

int cxd2880_tnrdmd_dvbt2_mon_ofdm(struct cxd2880_tnrdmd *tnr_dmd,
                                  struct cxd2880_dvbt2_ofdm *ofdm)
{
        u8 data[5];
        u8 sync_state = 0;
        u8 ts_lock = 0;
        u8 unlock_detected = 0;
        int ret;

        if (!tnr_dmd || !ofdm)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd, &sync_state,
                                               &ts_lock,
                                               &unlock_detected);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (sync_state != 6) {
                slvt_unfreeze_reg(tnr_dmd);

                ret = -EAGAIN;

                if (tnr_dmd->diver_mode ==
                    CXD2880_TNRDMD_DIVERMODE_MAIN)
                        ret =
                            cxd2880_tnrdmd_dvbt2_mon_ofdm(tnr_dmd->diver_sub,
                                                          ofdm);

                return ret;
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x1d, data, sizeof(data));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        slvt_unfreeze_reg(tnr_dmd);

        ofdm->mixed = ((data[0] & 0x20) ? 1 : 0);
        ofdm->is_miso = ((data[0] & 0x10) >> 4);
        ofdm->mode = (enum cxd2880_dvbt2_mode)(data[0] & 0x07);
        ofdm->gi = (enum cxd2880_dvbt2_guard)((data[1] & 0x70) >> 4);
        ofdm->pp = (enum cxd2880_dvbt2_pp)(data[1] & 0x07);
        ofdm->bw_ext = (data[2] & 0x10) >> 4;
        ofdm->papr = (enum cxd2880_dvbt2_papr)(data[2] & 0x0f);
        ofdm->num_symbols = (data[3] << 8) | data[4];

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_data_plps(struct cxd2880_tnrdmd
                                       *tnr_dmd, u8 *plp_ids,
                                       u8 *num_plps)
{
        u8 l1_post_ok = 0;
        int ret;

        if (!tnr_dmd || !num_plps)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret)
                return ret;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x86, &l1_post_ok, 1);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (!(l1_post_ok & 0x01)) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0xc1, num_plps, 1);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (*num_plps == 0) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EINVAL;
        }

        if (!plp_ids) {
                slvt_unfreeze_reg(tnr_dmd);
                return 0;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0xc2,
                                     plp_ids,
                                     ((*num_plps > 62) ?
                                     62 : *num_plps));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (*num_plps > 62) {
                ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0x00, 0x0c);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }

                ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0x10, plp_ids + 62,
                                             *num_plps - 62);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }
        }

        slvt_unfreeze_reg(tnr_dmd);

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_active_plp(struct cxd2880_tnrdmd
                                        *tnr_dmd,
                                        enum
                                        cxd2880_dvbt2_plp_btype
                                        type,
                                        struct cxd2880_dvbt2_plp
                                        *plp_info)
{
        u8 data[20];
        u8 addr = 0;
        u8 index = 0;
        u8 l1_post_ok = 0;
        int ret;

        if (!tnr_dmd || !plp_info)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x86, &l1_post_ok, 1);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (!l1_post_ok) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        if (type == CXD2880_DVBT2_PLP_COMMON)
                addr = 0xa9;
        else
                addr = 0x96;

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     addr, data, sizeof(data));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        slvt_unfreeze_reg(tnr_dmd);

        if (type == CXD2880_DVBT2_PLP_COMMON && !data[13])
                return -EAGAIN;

        plp_info->id = data[index++];
        plp_info->type =
            (enum cxd2880_dvbt2_plp_type)(data[index++] & 0x07);
        plp_info->payload =
            (enum cxd2880_dvbt2_plp_payload)(data[index++] & 0x1f);
        plp_info->ff = data[index++] & 0x01;
        plp_info->first_rf_idx = data[index++] & 0x07;
        plp_info->first_frm_idx = data[index++];
        plp_info->group_id = data[index++];
        plp_info->plp_cr =
            (enum cxd2880_dvbt2_plp_code_rate)(data[index++] & 0x07);
        plp_info->constell =
            (enum cxd2880_dvbt2_plp_constell)(data[index++] & 0x07);
        plp_info->rot = data[index++] & 0x01;
        plp_info->fec =
            (enum cxd2880_dvbt2_plp_fec)(data[index++] & 0x03);
        plp_info->num_blocks_max = (data[index++] & 0x03) << 8;
        plp_info->num_blocks_max |= data[index++];
        plp_info->frm_int = data[index++];
        plp_info->til_len = data[index++];
        plp_info->til_type = data[index++] & 0x01;

        plp_info->in_band_a_flag = data[index++] & 0x01;
        plp_info->rsvd = data[index++] << 8;
        plp_info->rsvd |= data[index++];

        plp_info->in_band_b_flag =
            (plp_info->rsvd & 0x8000) >> 15;
        plp_info->plp_mode =
            (enum cxd2880_dvbt2_plp_mode)((plp_info->rsvd & 0x000c) >> 2);
        plp_info->static_flag = (plp_info->rsvd & 0x0002) >> 1;
        plp_info->static_padding_flag = plp_info->rsvd & 0x0001;
        plp_info->rsvd = (plp_info->rsvd & 0x7ff0) >> 4;

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_data_plp_error(struct cxd2880_tnrdmd
                                            *tnr_dmd,
                                            u8 *plp_error)
{
        u8 data;
        int ret;

        if (!tnr_dmd || !plp_error)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x86, &data, 1);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if ((data & 0x01) == 0x00) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0xc0, &data, 1);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        slvt_unfreeze_reg(tnr_dmd);

        *plp_error = data & 0x01;

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_l1_change(struct cxd2880_tnrdmd
                                       *tnr_dmd, u8 *l1_change)
{
        u8 data;
        u8 sync_state = 0;
        u8 ts_lock = 0;
        u8 unlock_detected = 0;
        int ret;

        if (!tnr_dmd || !l1_change)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd, &sync_state,
                                               &ts_lock,
                                               &unlock_detected);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (sync_state < 5) {
                if (tnr_dmd->diver_mode ==
                    CXD2880_TNRDMD_DIVERMODE_MAIN) {
                        ret =
                            cxd2880_tnrdmd_dvbt2_mon_sync_stat_sub
                            (tnr_dmd, &sync_state, &unlock_detected);
                        if (ret) {
                                slvt_unfreeze_reg(tnr_dmd);
                                return ret;
                        }

                        if (sync_state < 5) {
                                slvt_unfreeze_reg(tnr_dmd);
                                return -EAGAIN;
                        }
                } else {
                        slvt_unfreeze_reg(tnr_dmd);
                        return -EAGAIN;
                }
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x5f, &data, sizeof(data));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        *l1_change = data & 0x01;
        if (*l1_change) {
                ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0x00, 0x22);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }

                ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0x16, 0x01);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }
        }
        slvt_unfreeze_reg(tnr_dmd);

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_l1_post(struct cxd2880_tnrdmd
                                     *tnr_dmd,
                                     struct cxd2880_dvbt2_l1post
                                     *l1_post)
{
        u8 data[16];
        int ret;

        if (!tnr_dmd || !l1_post)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret)
                return ret;

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x86, data, sizeof(data));
        if (ret)
                return ret;

        if (!(data[0] & 0x01))
                return -EAGAIN;

        l1_post->sub_slices_per_frame = (data[1] & 0x7f) << 8;
        l1_post->sub_slices_per_frame |= data[2];
        l1_post->num_plps = data[3];
        l1_post->num_aux = data[4] & 0x0f;
        l1_post->aux_cfg_rfu = data[5];
        l1_post->rf_idx = data[6] & 0x07;
        l1_post->freq = data[7] << 24;
        l1_post->freq |= data[8] << 16;
        l1_post->freq |= data[9] << 8;
        l1_post->freq |= data[10];
        l1_post->fef_type = data[11] & 0x0f;
        l1_post->fef_length = data[12] << 16;
        l1_post->fef_length |= data[13] << 8;
        l1_post->fef_length |= data[14];
        l1_post->fef_intvl = data[15];

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_bbheader(struct cxd2880_tnrdmd
                                      *tnr_dmd,
                                      enum cxd2880_dvbt2_plp_btype
                                      type,
                                      struct cxd2880_dvbt2_bbheader
                                      *bbheader)
{
        u8 sync_state = 0;
        u8 ts_lock = 0;
        u8 unlock_detected = 0;
        u8 data[14];
        u8 addr = 0;
        int ret;

        if (!tnr_dmd || !bbheader)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd, &sync_state,
                                                       &ts_lock,
                                                       &unlock_detected);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (!ts_lock) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (type == CXD2880_DVBT2_PLP_COMMON) {
                u8 l1_post_ok;
                u8 data;

                ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0x86, &l1_post_ok, 1);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }

                if (!(l1_post_ok & 0x01)) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return -EAGAIN;
                }

                ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0xb6, &data, 1);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }

                if (data == 0) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return -EAGAIN;
                }
        }

        if (type == CXD2880_DVBT2_PLP_COMMON)
                addr = 0x51;
        else
                addr = 0x42;

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     addr, data, sizeof(data));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        slvt_unfreeze_reg(tnr_dmd);

        bbheader->stream_input =
            (enum cxd2880_dvbt2_stream)((data[0] >> 6) & 0x03);
        bbheader->is_single_input_stream = (data[0] >> 5) & 0x01;
        bbheader->is_constant_coding_modulation =
            (data[0] >> 4) & 0x01;
        bbheader->issy_indicator = (data[0] >> 3) & 0x01;
        bbheader->null_packet_deletion = (data[0] >> 2) & 0x01;
        bbheader->ext = data[0] & 0x03;

        bbheader->input_stream_identifier = data[1];
        bbheader->plp_mode =
            (data[3] & 0x01) ? CXD2880_DVBT2_PLP_MODE_HEM :
            CXD2880_DVBT2_PLP_MODE_NM;
        bbheader->data_field_length = (data[4] << 8) | data[5];

        if (bbheader->plp_mode == CXD2880_DVBT2_PLP_MODE_NM) {
                bbheader->user_packet_length =
                    (data[6] << 8) | data[7];
                bbheader->sync_byte = data[8];
                bbheader->issy = 0;
        } else {
                bbheader->user_packet_length = 0;
                bbheader->sync_byte = 0;
                bbheader->issy =
                    (data[11] << 16) | (data[12] << 8) | data[13];
        }

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_in_bandb_ts_rate(struct cxd2880_tnrdmd
                                              *tnr_dmd,
                                              enum
                                              cxd2880_dvbt2_plp_btype
                                              type,
                                              u32 *ts_rate_bps)
{
        u8 sync_state = 0;
        u8 ts_lock = 0;
        u8 unlock_detected = 0;
        u8 l1_post_ok = 0;
        u8 data[4];
        u8 addr = 0;

        int ret;

        if (!tnr_dmd || !ts_rate_bps)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd, &sync_state,
                                               &ts_lock,
                                               &unlock_detected);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (!ts_lock) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x86, &l1_post_ok, 1);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (!(l1_post_ok & 0x01)) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        if (type == CXD2880_DVBT2_PLP_COMMON)
                addr = 0xba;
        else
                addr = 0xa7;

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     addr, &data[0], 1);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if ((data[0] & 0x80) == 0x00) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x25);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (type == CXD2880_DVBT2_PLP_COMMON)
                addr = 0xa6;
        else
                addr = 0xaa;

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     addr, &data[0], 4);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        *ts_rate_bps = ((data[0] & 0x07) << 24) | (data[1] << 16) |
                       (data[2] << 8) | data[3];

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_spectrum_sense(struct cxd2880_tnrdmd
                                            *tnr_dmd,
                                            enum
                                            cxd2880_tnrdmd_spectrum_sense
                                            *sense)
{
        u8 sync_state = 0;
        u8 ts_lock = 0;
        u8 early_unlock = 0;
        u8 data = 0;
        int ret;

        if (!tnr_dmd || !sense)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd, &sync_state, &ts_lock,
                                               &early_unlock);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (sync_state != 6) {
                slvt_unfreeze_reg(tnr_dmd);

                ret = -EAGAIN;

                if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_MAIN)
                        ret =
                            cxd2880_tnrdmd_dvbt2_mon_spectrum_sense(tnr_dmd->diver_sub,
                                                                    sense);

                return ret;
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x2f, &data, sizeof(data));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        slvt_unfreeze_reg(tnr_dmd);

        *sense =
            (data & 0x01) ? CXD2880_TNRDMD_SPECTRUM_INV :
            CXD2880_TNRDMD_SPECTRUM_NORMAL;

        return 0;
}

static int dvbt2_read_snr_reg(struct cxd2880_tnrdmd *tnr_dmd,
                              u16 *reg_value)
{
        u8 sync_state = 0;
        u8 ts_lock = 0;
        u8 unlock_detected = 0;
        u8 data[2];
        int ret;

        if (!tnr_dmd || !reg_value)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd, &sync_state,
                                               &ts_lock,
                                               &unlock_detected);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (sync_state != 6) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x13, data, sizeof(data));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        slvt_unfreeze_reg(tnr_dmd);

        *reg_value = (data[0] << 8) | data[1];

        return ret;
}

static int dvbt2_calc_snr(struct cxd2880_tnrdmd *tnr_dmd,
                          u32 reg_value, int *snr)
{
        if (!tnr_dmd || !snr)
                return -EINVAL;

        if (reg_value == 0)
                return -EAGAIN;

        if (reg_value > 10876)
                reg_value = 10876;

        *snr = intlog10(reg_value) - intlog10(12600 - reg_value);
        *snr = (*snr + 839) / 1678 + 32000;

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_snr(struct cxd2880_tnrdmd *tnr_dmd,
                                 int *snr)
{
        u16 reg_value = 0;
        int ret;

        if (!tnr_dmd || !snr)
                return -EINVAL;

        *snr = -1000 * 1000;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SINGLE) {
                ret = dvbt2_read_snr_reg(tnr_dmd, &reg_value);
                if (ret)
                        return ret;

                ret = dvbt2_calc_snr(tnr_dmd, reg_value, snr);
        } else {
                int snr_main = 0;
                int snr_sub = 0;

                ret =
                    cxd2880_tnrdmd_dvbt2_mon_snr_diver(tnr_dmd, snr, &snr_main,
                                                       &snr_sub);
        }

        return ret;
}

int cxd2880_tnrdmd_dvbt2_mon_snr_diver(struct cxd2880_tnrdmd
                                       *tnr_dmd, int *snr,
                                       int *snr_main, int *snr_sub)
{
        u16 reg_value = 0;
        u32 reg_value_sum = 0;
        int ret;

        if (!tnr_dmd || !snr || !snr_main || !snr_sub)
                return -EINVAL;

        *snr = -1000 * 1000;
        *snr_main = -1000 * 1000;
        *snr_sub = -1000 * 1000;

        if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = dvbt2_read_snr_reg(tnr_dmd, &reg_value);
        if (!ret) {
                ret = dvbt2_calc_snr(tnr_dmd, reg_value, snr_main);
                if (ret)
                        reg_value = 0;
        } else if (ret == -EAGAIN) {
                reg_value = 0;
        } else {
                return ret;
        }

        reg_value_sum += reg_value;

        ret = dvbt2_read_snr_reg(tnr_dmd->diver_sub, &reg_value);
        if (!ret) {
                ret = dvbt2_calc_snr(tnr_dmd->diver_sub, reg_value, snr_sub);
                if (ret)
                        reg_value = 0;
        } else if (ret == -EAGAIN) {
                reg_value = 0;
        } else {
                return ret;
        }

        reg_value_sum += reg_value;

        return dvbt2_calc_snr(tnr_dmd, reg_value_sum, snr);
}

int cxd2880_tnrdmd_dvbt2_mon_packet_error_number(struct
                                                 cxd2880_tnrdmd
                                                 *tnr_dmd,
                                                 u32 *pen)
{
        int ret;
        u8 data[3];

        if (!tnr_dmd || !pen)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret)
                return ret;

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x39, data, sizeof(data));
        if (ret)
                return ret;

        if (!(data[0] & 0x01))
                return -EAGAIN;

        *pen = ((data[1] << 8) | data[2]);

        return ret;
}

int cxd2880_tnrdmd_dvbt2_mon_sampling_offset(struct cxd2880_tnrdmd
                                             *tnr_dmd, int *ppm)
{
        u8 ctl_val_reg[5];
        u8 nominal_rate_reg[5];
        u32 trl_ctl_val = 0;
        u32 trcg_nominal_rate = 0;
        int num;
        int den;
        int ret;
        u8 sync_state = 0;
        u8 ts_lock = 0;
        u8 unlock_detected = 0;
        s8 diff_upper = 0;

        if (!tnr_dmd || !ppm)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_sync_stat(tnr_dmd, &sync_state,
                                               &ts_lock,
                                               &unlock_detected);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (sync_state != 6) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x34, ctl_val_reg,
                                     sizeof(ctl_val_reg));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x04);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x10, nominal_rate_reg,
                                     sizeof(nominal_rate_reg));
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        slvt_unfreeze_reg(tnr_dmd);

        diff_upper =
            (ctl_val_reg[0] & 0x7f) - (nominal_rate_reg[0] & 0x7f);

        if (diff_upper < -1 || diff_upper > 1)
                return -EAGAIN;

        trl_ctl_val = ctl_val_reg[1] << 24;
        trl_ctl_val |= ctl_val_reg[2] << 16;
        trl_ctl_val |= ctl_val_reg[3] << 8;
        trl_ctl_val |= ctl_val_reg[4];

        trcg_nominal_rate = nominal_rate_reg[1] << 24;
        trcg_nominal_rate |= nominal_rate_reg[2] << 16;
        trcg_nominal_rate |= nominal_rate_reg[3] << 8;
        trcg_nominal_rate |= nominal_rate_reg[4];

        trl_ctl_val >>= 1;
        trcg_nominal_rate >>= 1;

        if (diff_upper == 1)
                num =
                    (int)((trl_ctl_val + 0x80000000u) -
                          trcg_nominal_rate);
        else if (diff_upper == -1)
                num =
                    -(int)((trcg_nominal_rate + 0x80000000u) -
                           trl_ctl_val);
        else
                num = (int)(trl_ctl_val - trcg_nominal_rate);

        den = (nominal_rate_reg[0] & 0x7f) << 24;
        den |= nominal_rate_reg[1] << 16;
        den |= nominal_rate_reg[2] << 8;
        den |= nominal_rate_reg[3];
        den = (den + (390625 / 2)) / 390625;

        den >>= 1;

        if (num >= 0)
                *ppm = (num + (den / 2)) / den;
        else
                *ppm = (num - (den / 2)) / den;

        return 0;
}

int cxd2880_tnrdmd_dvbt2_mon_sampling_offset_sub(struct
                                                 cxd2880_tnrdmd
                                                 *tnr_dmd,
                                                 int *ppm)
{
        if (!tnr_dmd || !ppm)
                return -EINVAL;

        if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
                return -EINVAL;

        return cxd2880_tnrdmd_dvbt2_mon_sampling_offset(tnr_dmd->diver_sub,
                                                        ppm);
}

int cxd2880_tnrdmd_dvbt2_mon_qam(struct cxd2880_tnrdmd *tnr_dmd,
                                 enum cxd2880_dvbt2_plp_btype type,
                                 enum cxd2880_dvbt2_plp_constell *qam)
{
        u8 data;
        u8 l1_post_ok = 0;
        int ret;

        if (!tnr_dmd || !qam)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x86, &l1_post_ok, 1);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (!(l1_post_ok & 0x01)) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        if (type == CXD2880_DVBT2_PLP_COMMON) {
                ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0xb6, &data, 1);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }

                if (data == 0) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return -EAGAIN;
                }

                ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0xb1, &data, 1);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }
        } else {
                ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0x9e, &data, 1);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }
        }

        slvt_unfreeze_reg(tnr_dmd);

        *qam = (enum cxd2880_dvbt2_plp_constell)(data & 0x07);

        return ret;
}

int cxd2880_tnrdmd_dvbt2_mon_code_rate(struct cxd2880_tnrdmd
                                       *tnr_dmd,
                                       enum cxd2880_dvbt2_plp_btype
                                       type,
                                       enum
                                       cxd2880_dvbt2_plp_code_rate
                                       *code_rate)
{
        u8 data;
        u8 l1_post_ok = 0;
        int ret;

        if (!tnr_dmd || !code_rate)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = slvt_freeze_reg(tnr_dmd);
        if (ret)
                return ret;

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x86, &l1_post_ok, 1);
        if (ret) {
                slvt_unfreeze_reg(tnr_dmd);
                return ret;
        }

        if (!(l1_post_ok & 0x01)) {
                slvt_unfreeze_reg(tnr_dmd);
                return -EAGAIN;
        }

        if (type == CXD2880_DVBT2_PLP_COMMON) {
                ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0xb6, &data, 1);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }

                if (data == 0) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return -EAGAIN;
                }

                ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0xb0, &data, 1);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }
        } else {
                ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                             CXD2880_IO_TGT_DMD,
                                             0x9d, &data, 1);
                if (ret) {
                        slvt_unfreeze_reg(tnr_dmd);
                        return ret;
                }
        }

        slvt_unfreeze_reg(tnr_dmd);

        *code_rate = (enum cxd2880_dvbt2_plp_code_rate)(data & 0x07);

        return ret;
}

int cxd2880_tnrdmd_dvbt2_mon_profile(struct cxd2880_tnrdmd
                                     *tnr_dmd,
                                     enum cxd2880_dvbt2_profile
                                     *profile)
{
        u8 data;
        int ret;

        if (!tnr_dmd || !profile)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = tnr_dmd->io->write_reg(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x00, 0x0b);
        if (ret)
                return ret;

        ret = tnr_dmd->io->read_regs(tnr_dmd->io,
                                     CXD2880_IO_TGT_DMD,
                                     0x22, &data, sizeof(data));
        if (ret)
                return ret;

        if (data & 0x02) {
                if (data & 0x01)
                        *profile = CXD2880_DVBT2_PROFILE_LITE;
                else
                        *profile = CXD2880_DVBT2_PROFILE_BASE;
        } else {
                ret = -EAGAIN;
                if (tnr_dmd->diver_mode ==
                    CXD2880_TNRDMD_DIVERMODE_MAIN)
                        ret =
                            cxd2880_tnrdmd_dvbt2_mon_profile(tnr_dmd->diver_sub,
                                                             profile);

                return ret;
        }

        return 0;
}

static int dvbt2_calc_ssi(struct cxd2880_tnrdmd *tnr_dmd,
                          int rf_lvl, u8 *ssi)
{
        enum cxd2880_dvbt2_plp_constell qam;
        enum cxd2880_dvbt2_plp_code_rate code_rate;
        int prel;
        int temp_ssi = 0;
        int ret;

        if (!tnr_dmd || !ssi)
                return -EINVAL;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_qam(tnr_dmd, CXD2880_DVBT2_PLP_DATA, &qam);
        if (ret)
                return ret;

        ret =
            cxd2880_tnrdmd_dvbt2_mon_code_rate(tnr_dmd, CXD2880_DVBT2_PLP_DATA,
                                               &code_rate);
        if (ret)
                return ret;

        if (code_rate > CXD2880_DVBT2_R2_5 || qam > CXD2880_DVBT2_QAM256)
                return -EINVAL;

        prel = rf_lvl - ref_dbm_1000[qam][code_rate];

        if (prel < -15000)
                temp_ssi = 0;
        else if (prel < 0)
                temp_ssi = ((2 * (prel + 15000)) + 1500) / 3000;
        else if (prel < 20000)
                temp_ssi = (((4 * prel) + 500) / 1000) + 10;
        else if (prel < 35000)
                temp_ssi = (((2 * (prel - 20000)) + 1500) / 3000) + 90;
        else
                temp_ssi = 100;

        *ssi = (temp_ssi > 100) ? 100 : (u8)temp_ssi;

        return ret;
}

int cxd2880_tnrdmd_dvbt2_mon_ssi(struct cxd2880_tnrdmd *tnr_dmd,
                                 u8 *ssi)
{
        int rf_lvl = 0;
        int ret;

        if (!tnr_dmd || !ssi)
                return -EINVAL;

        if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = cxd2880_tnrdmd_mon_rf_lvl(tnr_dmd, &rf_lvl);
        if (ret)
                return ret;

        return dvbt2_calc_ssi(tnr_dmd, rf_lvl, ssi);
}

int cxd2880_tnrdmd_dvbt2_mon_ssi_sub(struct cxd2880_tnrdmd
                                     *tnr_dmd, u8 *ssi)
{
        int rf_lvl = 0;
        int ret;

        if (!tnr_dmd || !ssi)
                return -EINVAL;

        if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
                return -EINVAL;

        if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
                return -EINVAL;

        if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT2)
                return -EINVAL;

        ret = cxd2880_tnrdmd_mon_rf_lvl(tnr_dmd->diver_sub, &rf_lvl);
        if (ret)
                return ret;

        return dvbt2_calc_ssi(tnr_dmd, rf_lvl, ssi);
}