Re: [PATCH v3 07/14] [media] cxd2880: Add top level of the driver

From: Mauro Carvalho Chehab
Date: Sun Aug 27 2017 - 11:12:38 EST

Em Wed, 16 Aug 2017 13:39:45 +0900
<Yasunari.Takiguchi@xxxxxxxx> escreveu:

> From: Yasunari Takiguchi <Yasunari.Takiguchi@xxxxxxxx>
>
> This provides the main dvb frontend operation functions
> for the Sony CXD2880 DVB-T2/T tuner + demodulator driver.
>
> [Change list]
> Changes in V3
> drivers/media/dvb-frontends/cxd2880/cxd2880_top.c
> -adjusted indent spaces
> -modified debugging code
> -removed unnecessary cast
> -modified return code
> -modified coding style of if()
> -modified about measurement period of PER/BER.
> -changed hexadecimal code to lower case.
>
> Signed-off-by: Yasunari Takiguchi <Yasunari.Takiguchi@xxxxxxxx>
> Signed-off-by: Masayuki Yamamoto <Masayuki.Yamamoto@xxxxxxxx>
> Signed-off-by: Hideki Nozawa <Hideki.Nozawa@xxxxxxxx>
> Signed-off-by: Kota Yonezawa <Kota.Yonezawa@xxxxxxxx>
> Signed-off-by: Toshihiko Matsumoto <Toshihiko.Matsumoto@xxxxxxxx>
> Signed-off-by: Satoshi Watanabe <Satoshi.C.Watanabe@xxxxxxxx>
> ---
> drivers/media/dvb-frontends/cxd2880/cxd2880_top.c | 1879 +++++++++++++++++++++
> 1 file changed, 1879 insertions(+)
> create mode 100644 drivers/media/dvb-frontends/cxd2880/cxd2880_top.c
>
> diff --git a/drivers/media/dvb-frontends/cxd2880/cxd2880_top.c b/drivers/media/dvb-frontends/cxd2880/cxd2880_top.c
> new file mode 100644
> index 000000000000..306966dd186b
> --- /dev/null
> +++ b/drivers/media/dvb-frontends/cxd2880/cxd2880_top.c
> @@ -0,0 +1,1879 @@
> +/*
> + * cxd2880_top.c
> + * Sony CXD2880 DVB-T2/T tuner + demodulator driver
> + *
> + * Copyright (C) 2016, 2017 Sony Semiconductor Solutions Corporation
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; version 2 of the License.
> + *
> + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
> + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
> + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
> + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
> + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
> + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
> + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
> + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
> + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, see <http://www.gnu.org/licenses/>.
> + */
> +
> +#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
> +
> +#include <linux/spi/spi.h>
> +
> +#include "dvb_frontend.h"
> +#include "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_dvbt2.h"
> +#include "cxd2880_integ_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;
> +};
> +
> +static int cxd2880_pre_bit_err_t(
> + struct cxd2880_tnrdmd *tnrdmd, u32 *pre_bit_err,
> + u32 *pre_bit_count)
> +{
> + u8 rdata[2];
> + int ret = 0;
> +
> + 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 -EPERM;
> +
> + if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT)
> + return -EPERM;
> +
> + 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 -EBUSY;
> + }
> +
> + 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 = 0;
> +
> + 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 -EPERM;
> +
> + if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT2)
> + return -EPERM;
> +
> + 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 -EBUSY;
> + }
> + *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 = 0;
> +
> + 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 -EPERM;
> +
> + if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT)
> + return -EPERM;
> +
> + 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 -EBUSY;
> +
> + *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 -EBUSY;
> +
> + if (period_exp == 11)
> + *post_bit_count = 3342336;
> + else
> + *post_bit_count = (1U << period_exp) * 204 * 81;
> +
> + 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;
> +
> + 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 -EPERM;
> +
> + if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT2)
> + return -EPERM;
> +
> + {
> + 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;
> +
> + 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}
> + };
> + int ret = 0;

Same as pointed on patch 5: don't use a code block, except if you
need (e. g. on if, else, switch, do, etc).

Instead, move static const structs out of the function and put
the remaining data at the beginning of the function.

Also, ret doesn't need to be initialized, as it will already
be initialized before usage.

> +
> + 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 -EBUSY;
> + }
> +
> + *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 -EBUSY;
> +
> + n_bch = n_bch_bits_lookup[plp_fec_type][plp_code_rate];
> + }
> +
> + if (*post_bit_err > ((1U << period_exp) * n_bch))
> + return -EBUSY;
> +
> + *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 = 0;
> +
> + 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 -EPERM;
> +
> + if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT)
> + return -EPERM;
> +
> + 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 -EBUSY;
> +
> + *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 -EBUSY;
> +
> + return 0;
> +}
> +
> +static int cxd2880_read_block_err_t2(struct cxd2880_tnrdmd *tnrdmd,
> + u32 *block_err,
> + u32 *block_count)
> +{
> + 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 -EPERM;
> + if (tnrdmd->sys != CXD2880_DTV_SYS_DVBT2)
> + return -EPERM;
> +
> + {
> + u8 rdata[3];
> + int ret = 0;

Same here. Same comment applies to other similar coding.
> +
> + 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 -EBUSY;
> +
> + *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 -EBUSY;
> +
> + 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 = 0;
> + 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;
> + }
> + mutex_unlock(priv->spi_mutex);
> +
> + pr_debug("OK.\n");
> +
> + return ret;
> +}
> +
> +static int cxd2880_sleep(struct dvb_frontend *fe)
> +{
> + int ret = 0;
> + struct cxd2880_priv *priv = NULL;
> +
> + if (!fe) {
> + pr_err("inavlid 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 = 0;
> + struct cxd2880_priv *priv = NULL;
> + struct dtv_frontend_properties *c = NULL;
> + int level = 0;
> +
> + if ((!fe) || (!strength)) {
> + pr_err("inavlid 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;
> + /* -105dBm - -30dBm (-105000/125 = -840, -30000/125 = -240 */

It took me a while to understand what you meant here. I guess you
meant to say:

/*
* Level should be between -105dBm and -30dBm.
* E. g. they should be between:
* -105000/125 = -840 and -30000/125 = -240
*/

(better to be a little clearer here, with something like the above
comment)


> + level = clamp(level, -840, -240);
> + /* scale value to 0x0000-0xffff */
> + *strength = (u16)(((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 = 0;
> + int snrvalue = 0;
> + struct cxd2880_priv *priv = NULL;
> + struct dtv_frontend_properties *c = NULL;
> +
> + if ((!fe) || (!snr)) {
> + pr_err("inavlid 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 = (u16)snrvalue;
> +
> + if (ret)
> + pr_debug("ret = %d\n", ret);
> +
> + return ret;
> +}
> +
> +static int cxd2880_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
> +{
> + int ret = 0;
> + struct cxd2880_priv *priv = NULL;
> + struct dtv_frontend_properties *c = NULL;
> +
> + if ((!fe) || (!ucblocks)) {
> + pr_err("inavlid 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("invlaid system\n");

typo: invalid

> + 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)
> +{
> + int ret = 0;
> + struct cxd2880_priv *priv = NULL;
> + struct dtv_frontend_properties *c = NULL;
> +
> + if ((!fe) || (!ber)) {
> + pr_err("inavlid arg\n");

Same typo here:
inavlid -> invalid

> + 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_pre_rsber(&priv->tnrdmd,
> + ber);
> + /* x100 to change unit.(10^7 -> 10^9 */

Missing ')'

> + *ber *= 100;
> + } else if (c->delivery_system == SYS_DVBT2) {
> + ret = cxd2880_tnrdmd_dvbt2_mon_pre_bchber(&priv->tnrdmd,
> + ber);
> + } else {
> + pr_err("invlaid system\n");

Same typo here... better to check the entire code. It seems that it
was copied and pasted on several places :-)

> + 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_set_ber_per_period_t(struct dvb_frontend *fe)
> +{
> + int ret = 0;
> + struct dtv_frontend_properties *c;
> + struct cxd2880_priv *priv;
> + int cr_table[5] = {31500, 42000, 47250, 52500, 55125};
> + int denominator_tbl[4] = {125664, 129472, 137088, 152320};

Are both tables static const? If so, declare as such, as it
decreases the Kernel runtime size.

> + 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;
> +
> + if (!fe) {
> + pr_err("inavlid arg\n");
> + return -EINVAL;
> + }
> +
> + priv = fe->demodulator_priv;
> + c = &fe->dtv_property_cache;
> + 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 = 0;
> + struct dtv_frontend_properties *c;
> + 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 gi_tbl[7] = {32, 64, 128, 256, 8, 152, 76};
> + u8 n_tbl[6] = {8, 2, 4, 16, 1, 1};
> + u8 mode_tbl[6] = {2, 8, 4, 1, 16, 32};
> + u32 kbch_tbl[2][8] = {
> + {6952, 9472, 10552, 11632, 12352, 13072, 5152, 6232},
> + {32128, 38608, 42960, 48328, 51568, 53760, 0, 0} };
> + u32 denominator = 0;
> +
> + if (!fe) {
> + pr_err("inavlid arg\n");
> + return -EINVAL;
> + }
> +
> + priv = fe->demodulator_priv;
> + c = &fe->dtv_property_cache;
> + 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_set_frontend(struct dvb_frontend *fe)
> +{
> + int ret = 0;
> + int ret_val = 0;
> + struct dtv_frontend_properties *c;
> + struct cxd2880_priv *priv;
> + enum cxd2880_dtv_bandwidth bw = CXD2880_DTV_BW_1_7_MHZ;
> +
> + if (!fe) {
> + pr_err("inavlid 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;
> + }
> +
> + 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_integ_dvbt_tune(&priv->tnrdmd,
> + &priv->dvbt_tune_param);
> + ret_val = cxd2880_set_ber_per_period_t(fe);
> + } 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_integ_dvbt2_tune(&priv->tnrdmd,
> + &priv->dvbt2_tune_param);
> + ret_val = cxd2880_set_ber_per_period_t2(fe);
> + } else {
> + pr_err("invalid system\n");
> + mutex_unlock(priv->spi_mutex);
> + return -EINVAL;
> + }
> + mutex_unlock(priv->spi_mutex);
> +
> + pr_info("tune result %d set ber/per result %d\n", ret, ret_val);
> +
> + 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 = 0;
> +
> + if (!fe) {
> + pr_err("invalid arg\n");
> + return -EINVAL;
> + }
> +
> + priv = fe->demodulator_priv;
> + c = &fe->dtv_property_cache;
> +
> + if (!(status & FE_HAS_LOCK)) {
> + 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 {
> + pr_err();
> + 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 {
> + pr_err();
> + 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_read_status(struct dvb_frontend *fe,
> + enum fe_status *status)
> +{
> + int ret = 0;
> + 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("invlaid 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 result %d\n", *status, ret);
> +
> + 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 = 0;
> +
> + 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 = 0;
> + 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_err("get invalid mode %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_err("get invalid guard %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_err("TPSInfo hierarchy 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_err("TPSInfo rateHP 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_err("TPSInfo rateLP 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_err("TPSInfo constellation 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_err("spectrum sense 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 = 0;
> + 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_err("L1Pre fft_mode 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_err("L1Pre gi invalid %d\n", l1pre.gi);

Better to print it in full:
pr_err("L1Pre guard interval is invalid %d\n", l1pre.gi);

Yet, I guess several of such messages should actually be pr_dbg(),
as, a normal user shouldn't normally see them. Anyway, debug levels
can be adjusted later, after the driver gets merged upstream.

> + 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_err("CodeRate 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_err("QAM 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_err("spectrum sense 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)
> +{
> + struct cxd2880_priv *priv = NULL;
> + int ret = 0;
> +
> + if ((!fe) || (!props)) {
> + pr_err("invalid arg.");
> + return -EINVAL;
> + }
> +
> + priv = fe->demodulator_priv;
> +
> + 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;
> +
> +struct dvb_frontend *cxd2880_attach(struct dvb_frontend *fe,
> + struct cxd2880_config *cfg)
> +{
> + int ret = 0;
> + 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);
> +
> +static struct dvb_frontend_ops cxd2880_dvbt_t2_ops = {
> + .info = {
> + .name = "Sony CXD2880",
> + .frequency_min = 174000000,
> + .frequency_max = 862000000,
> + .frequency_stepsize = 1000,
> + .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,
> +};
> +
> +MODULE_DESCRIPTION(
> +"Sony CXD2880 DVB-T2/T tuner + demodulator drvier");
> +MODULE_AUTHOR("Sony Semiconductor Solutions Corporation");
> +MODULE_LICENSE("GPL v2");



Thanks,
Mauro