+++ /dev/null
-/*
- * drivers/media/radio/radio-si476x.c -- V4L2 driver for SI476X chips
- *
- * Copyright (C) 2012 Innovative Converged Devices(ICD)
- * Copyright (C) 2013 Andrey Smirnov
- *
- * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
- *
- * 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 program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/atomic.h>
-#include <linux/videodev2.h>
-#include <linux/mutex.h>
-#include <linux/debugfs.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-event.h>
-#include <media/v4l2-device.h>
-
-#include <media/si476x.h>
-#include <linux/mfd/si476x-core.h>
-
-#define FM_FREQ_RANGE_LOW 64000000
-#define FM_FREQ_RANGE_HIGH 108000000
-
-#define AM_FREQ_RANGE_LOW 520000
-#define AM_FREQ_RANGE_HIGH 30000000
-
-#define PWRLINEFLTR (1 << 8)
-
-#define FREQ_MUL (10000000 / 625)
-
-#define SI476X_PHDIV_STATUS_LINK_LOCKED(status) (0b10000000 & (status))
-
-#define DRIVER_NAME "si476x-radio"
-#define DRIVER_CARD "SI476x AM/FM Receiver"
-
-enum si476x_freq_bands {
- SI476X_BAND_FM,
- SI476X_BAND_AM,
-};
-
-static const struct v4l2_frequency_band si476x_bands[] = {
- [SI476X_BAND_FM] = {
- .type = V4L2_TUNER_RADIO,
- .index = SI476X_BAND_FM,
- .capability = V4L2_TUNER_CAP_LOW
- | V4L2_TUNER_CAP_STEREO
- | V4L2_TUNER_CAP_RDS
- | V4L2_TUNER_CAP_RDS_BLOCK_IO
- | V4L2_TUNER_CAP_FREQ_BANDS,
- .rangelow = 64 * FREQ_MUL,
- .rangehigh = 108 * FREQ_MUL,
- .modulation = V4L2_BAND_MODULATION_FM,
- },
- [SI476X_BAND_AM] = {
- .type = V4L2_TUNER_RADIO,
- .index = SI476X_BAND_AM,
- .capability = V4L2_TUNER_CAP_LOW
- | V4L2_TUNER_CAP_FREQ_BANDS,
- .rangelow = 0.52 * FREQ_MUL,
- .rangehigh = 30 * FREQ_MUL,
- .modulation = V4L2_BAND_MODULATION_AM,
- },
-};
-
-static inline bool si476x_radio_freq_is_inside_of_the_band(u32 freq, int band)
-{
- return freq >= si476x_bands[band].rangelow &&
- freq <= si476x_bands[band].rangehigh;
-}
-
-static inline bool si476x_radio_range_is_inside_of_the_band(u32 low, u32 high,
- int band)
-{
- return low >= si476x_bands[band].rangelow &&
- high <= si476x_bands[band].rangehigh;
-}
-
-static int si476x_radio_s_ctrl(struct v4l2_ctrl *ctrl);
-static int si476x_radio_g_volatile_ctrl(struct v4l2_ctrl *ctrl);
-
-enum phase_diversity_modes_idx {
- SI476X_IDX_PHDIV_DISABLED,
- SI476X_IDX_PHDIV_PRIMARY_COMBINING,
- SI476X_IDX_PHDIV_PRIMARY_ANTENNA,
- SI476X_IDX_PHDIV_SECONDARY_ANTENNA,
- SI476X_IDX_PHDIV_SECONDARY_COMBINING,
-};
-
-static const char * const phase_diversity_modes[] = {
- [SI476X_IDX_PHDIV_DISABLED] = "Disabled",
- [SI476X_IDX_PHDIV_PRIMARY_COMBINING] = "Primary with Secondary",
- [SI476X_IDX_PHDIV_PRIMARY_ANTENNA] = "Primary Antenna",
- [SI476X_IDX_PHDIV_SECONDARY_ANTENNA] = "Secondary Antenna",
- [SI476X_IDX_PHDIV_SECONDARY_COMBINING] = "Secondary with Primary",
-};
-
-static inline enum phase_diversity_modes_idx
-si476x_phase_diversity_mode_to_idx(enum si476x_phase_diversity_mode mode)
-{
- switch (mode) {
- default: /* FALLTHROUGH */
- case SI476X_PHDIV_DISABLED:
- return SI476X_IDX_PHDIV_DISABLED;
- case SI476X_PHDIV_PRIMARY_COMBINING:
- return SI476X_IDX_PHDIV_PRIMARY_COMBINING;
- case SI476X_PHDIV_PRIMARY_ANTENNA:
- return SI476X_IDX_PHDIV_PRIMARY_ANTENNA;
- case SI476X_PHDIV_SECONDARY_ANTENNA:
- return SI476X_IDX_PHDIV_SECONDARY_ANTENNA;
- case SI476X_PHDIV_SECONDARY_COMBINING:
- return SI476X_IDX_PHDIV_SECONDARY_COMBINING;
- }
-}
-
-static inline enum si476x_phase_diversity_mode
-si476x_phase_diversity_idx_to_mode(enum phase_diversity_modes_idx idx)
-{
- static const int idx_to_value[] = {
- [SI476X_IDX_PHDIV_DISABLED] = SI476X_PHDIV_DISABLED,
- [SI476X_IDX_PHDIV_PRIMARY_COMBINING] = SI476X_PHDIV_PRIMARY_COMBINING,
- [SI476X_IDX_PHDIV_PRIMARY_ANTENNA] = SI476X_PHDIV_PRIMARY_ANTENNA,
- [SI476X_IDX_PHDIV_SECONDARY_ANTENNA] = SI476X_PHDIV_SECONDARY_ANTENNA,
- [SI476X_IDX_PHDIV_SECONDARY_COMBINING] = SI476X_PHDIV_SECONDARY_COMBINING,
- };
-
- return idx_to_value[idx];
-}
-
-static const struct v4l2_ctrl_ops si476x_ctrl_ops = {
- .g_volatile_ctrl = si476x_radio_g_volatile_ctrl,
- .s_ctrl = si476x_radio_s_ctrl,
-};
-
-
-enum si476x_ctrl_idx {
- SI476X_IDX_RSSI_THRESHOLD,
- SI476X_IDX_SNR_THRESHOLD,
- SI476X_IDX_MAX_TUNE_ERROR,
- SI476X_IDX_HARMONICS_COUNT,
- SI476X_IDX_DIVERSITY_MODE,
- SI476X_IDX_INTERCHIP_LINK,
-};
-static struct v4l2_ctrl_config si476x_ctrls[] = {
-
- /**
- * SI476X during its station seeking(or tuning) process uses several
- * parameters to detrmine if "the station" is valid:
- *
- * - Signal's SNR(in dBuV) must be lower than
- * #V4L2_CID_SI476X_SNR_THRESHOLD
- * - Signal's RSSI(in dBuV) must be greater than
- * #V4L2_CID_SI476X_RSSI_THRESHOLD
- * - Signal's frequency deviation(in units of 2ppm) must not be
- * more than #V4L2_CID_SI476X_MAX_TUNE_ERROR
- */
- [SI476X_IDX_RSSI_THRESHOLD] = {
- .ops = &si476x_ctrl_ops,
- .id = V4L2_CID_SI476X_RSSI_THRESHOLD,
- .name = "Valid RSSI Threshold",
- .type = V4L2_CTRL_TYPE_INTEGER,
- .min = -128,
- .max = 127,
- .step = 1,
- },
- [SI476X_IDX_SNR_THRESHOLD] = {
- .ops = &si476x_ctrl_ops,
- .id = V4L2_CID_SI476X_SNR_THRESHOLD,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Valid SNR Threshold",
- .min = -128,
- .max = 127,
- .step = 1,
- },
- [SI476X_IDX_MAX_TUNE_ERROR] = {
- .ops = &si476x_ctrl_ops,
- .id = V4L2_CID_SI476X_MAX_TUNE_ERROR,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Max Tune Errors",
- .min = 0,
- .max = 126 * 2,
- .step = 2,
- },
-
- /**
- * #V4L2_CID_SI476X_HARMONICS_COUNT -- number of harmonics
- * built-in power-line noise supression filter is to reject
- * during AM-mode operation.
- */
- [SI476X_IDX_HARMONICS_COUNT] = {
- .ops = &si476x_ctrl_ops,
- .id = V4L2_CID_SI476X_HARMONICS_COUNT,
- .type = V4L2_CTRL_TYPE_INTEGER,
-
- .name = "Count of Harmonics to Reject",
- .min = 0,
- .max = 20,
- .step = 1,
- },
-
- /**
- * #V4L2_CID_SI476X_DIVERSITY_MODE -- configuration which
- * two tuners working in diversity mode are to work in.
- *
- * - #SI476X_IDX_PHDIV_DISABLED diversity mode disabled
- * - #SI476X_IDX_PHDIV_PRIMARY_COMBINING diversity mode is
- * on, primary tuner's antenna is the main one.
- * - #SI476X_IDX_PHDIV_PRIMARY_ANTENNA diversity mode is
- * off, primary tuner's antenna is the main one.
- * - #SI476X_IDX_PHDIV_SECONDARY_ANTENNA diversity mode is
- * off, secondary tuner's antenna is the main one.
- * - #SI476X_IDX_PHDIV_SECONDARY_COMBINING diversity mode is
- * on, secondary tuner's antenna is the main one.
- */
- [SI476X_IDX_DIVERSITY_MODE] = {
- .ops = &si476x_ctrl_ops,
- .id = V4L2_CID_SI476X_DIVERSITY_MODE,
- .type = V4L2_CTRL_TYPE_MENU,
- .name = "Phase Diversity Mode",
- .qmenu = phase_diversity_modes,
- .min = 0,
- .max = ARRAY_SIZE(phase_diversity_modes) - 1,
- },
-
- /**
- * #V4L2_CID_SI476X_INTERCHIP_LINK -- inter-chip link in
- * diversity mode indicator. Allows user to determine if two
- * chips working in diversity mode have established a link
- * between each other and if the system as a whole uses
- * signals from both antennas to receive FM radio.
- */
- [SI476X_IDX_INTERCHIP_LINK] = {
- .ops = &si476x_ctrl_ops,
- .id = V4L2_CID_SI476X_INTERCHIP_LINK,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_VOLATILE,
- .name = "Inter-Chip Link",
- .min = 0,
- .max = 1,
- .step = 1,
- },
-};
-
-struct si476x_radio;
-
-/**
- * struct si476x_radio_ops - vtable of tuner functions
- *
- * This table holds pointers to functions implementing particular
- * operations depending on the mode in which the tuner chip was
- * configured to start in. If the function is not supported
- * corresponding element is set to #NULL.
- *
- * @tune_freq: Tune chip to a specific frequency
- * @seek_start: Star station seeking
- * @rsq_status: Get Recieved Signal Quality(RSQ) status
- * @rds_blckcnt: Get recived RDS blocks count
- * @phase_diversity: Change phase diversity mode of the tuner
- * @phase_div_status: Get phase diversity mode status
- * @acf_status: Get the status of Automatically Controlled
- * Features(ACF)
- * @agc_status: Get Automatic Gain Control(AGC) status
- */
-struct si476x_radio_ops {
- int (*tune_freq)(struct si476x_core *, struct si476x_tune_freq_args *);
- int (*seek_start)(struct si476x_core *, bool, bool);
- int (*rsq_status)(struct si476x_core *, struct si476x_rsq_status_args *,
- struct si476x_rsq_status_report *);
- int (*rds_blckcnt)(struct si476x_core *, bool,
- struct si476x_rds_blockcount_report *);
-
- int (*phase_diversity)(struct si476x_core *,
- enum si476x_phase_diversity_mode);
- int (*phase_div_status)(struct si476x_core *);
- int (*acf_status)(struct si476x_core *,
- struct si476x_acf_status_report *);
- int (*agc_status)(struct si476x_core *,
- struct si476x_agc_status_report *);
-};
-
-/**
- * struct si476x_radio - radio device
- *
- * @core: Pointer to underlying core device
- * @videodev: Pointer to video device created by V4L2 subsystem
- * @ops: Vtable of functions. See struct si476x_radio_ops for details
- * @kref: Reference counter
- * @core_lock: An r/w semaphore to brebvent the deletion of underlying
- * core structure is the radio device is being used
- */
-struct si476x_radio {
- struct v4l2_device v4l2dev;
- struct video_device videodev;
- struct v4l2_ctrl_handler ctrl_handler;
-
- struct si476x_core *core;
- /* This field should not be accesses unless core lock is held */
- const struct si476x_radio_ops *ops;
-
- struct dentry *debugfs;
- u32 audmode;
-};
-
-static inline struct si476x_radio *
-v4l2_dev_to_radio(struct v4l2_device *d)
-{
- return container_of(d, struct si476x_radio, v4l2dev);
-}
-
-static inline struct si476x_radio *
-v4l2_ctrl_handler_to_radio(struct v4l2_ctrl_handler *d)
-{
- return container_of(d, struct si476x_radio, ctrl_handler);
-}
-
-/*
- * si476x_vidioc_querycap - query device capabilities
- */
-static int si476x_radio_querycap(struct file *file, void *priv,
- struct v4l2_capability *capability)
-{
- struct si476x_radio *radio = video_drvdata(file);
-
- strlcpy(capability->driver, radio->v4l2dev.name,
- sizeof(capability->driver));
- strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card));
- snprintf(capability->bus_info, sizeof(capability->bus_info),
- "platform:%s", radio->v4l2dev.name);
-
- capability->device_caps = V4L2_CAP_TUNER
- | V4L2_CAP_RADIO
- | V4L2_CAP_HW_FREQ_SEEK;
-
- si476x_core_lock(radio->core);
- if (!si476x_core_is_a_secondary_tuner(radio->core))
- capability->device_caps |= V4L2_CAP_RDS_CAPTURE
- | V4L2_CAP_READWRITE;
- si476x_core_unlock(radio->core);
-
- capability->capabilities = capability->device_caps
- | V4L2_CAP_DEVICE_CAPS;
- return 0;
-}
-
-static int si476x_radio_enum_freq_bands(struct file *file, void *priv,
- struct v4l2_frequency_band *band)
-{
- int err;
- struct si476x_radio *radio = video_drvdata(file);
-
- if (band->tuner != 0)
- return -EINVAL;
-
- switch (radio->core->chip_id) {
- /* AM/FM tuners -- all bands are supported */
- case SI476X_CHIP_SI4761:
- case SI476X_CHIP_SI4764:
- if (band->index < ARRAY_SIZE(si476x_bands)) {
- *band = si476x_bands[band->index];
- err = 0;
- } else {
- err = -EINVAL;
- }
- break;
- /* FM companion tuner chips -- only FM bands are
- * supported */
- case SI476X_CHIP_SI4768:
- if (band->index == SI476X_BAND_FM) {
- *band = si476x_bands[band->index];
- err = 0;
- } else {
- err = -EINVAL;
- }
- break;
- default:
- err = -EINVAL;
- }
-
- return err;
-}
-
-static int si476x_radio_g_tuner(struct file *file, void *priv,
- struct v4l2_tuner *tuner)
-{
- int err;
- struct si476x_rsq_status_report report;
- struct si476x_radio *radio = video_drvdata(file);
-
- struct si476x_rsq_status_args args = {
- .primary = false,
- .rsqack = false,
- .attune = false,
- .cancel = false,
- .stcack = false,
- };
-
- if (tuner->index != 0)
- return -EINVAL;
-
- tuner->type = V4L2_TUNER_RADIO;
- tuner->capability = V4L2_TUNER_CAP_LOW /* Measure frequencies
- * in multiples of
- * 62.5 Hz */
- | V4L2_TUNER_CAP_STEREO
- | V4L2_TUNER_CAP_HWSEEK_BOUNDED
- | V4L2_TUNER_CAP_HWSEEK_WRAP
- | V4L2_TUNER_CAP_HWSEEK_PROG_LIM;
-
- si476x_core_lock(radio->core);
-
- if (si476x_core_is_a_secondary_tuner(radio->core)) {
- strlcpy(tuner->name, "FM (secondary)", sizeof(tuner->name));
- tuner->rxsubchans = 0;
- tuner->rangelow = si476x_bands[SI476X_BAND_FM].rangelow;
- } else if (si476x_core_has_am(radio->core)) {
- if (si476x_core_is_a_primary_tuner(radio->core))
- strlcpy(tuner->name, "AM/FM (primary)",
- sizeof(tuner->name));
- else
- strlcpy(tuner->name, "AM/FM", sizeof(tuner->name));
-
- tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO
- | V4L2_TUNER_SUB_RDS;
- tuner->capability |= V4L2_TUNER_CAP_RDS
- | V4L2_TUNER_CAP_RDS_BLOCK_IO
- | V4L2_TUNER_CAP_FREQ_BANDS;
-
- tuner->rangelow = si476x_bands[SI476X_BAND_AM].rangelow;
- } else {
- strlcpy(tuner->name, "FM", sizeof(tuner->name));
- tuner->rxsubchans = V4L2_TUNER_SUB_RDS;
- tuner->capability |= V4L2_TUNER_CAP_RDS
- | V4L2_TUNER_CAP_RDS_BLOCK_IO
- | V4L2_TUNER_CAP_FREQ_BANDS;
- tuner->rangelow = si476x_bands[SI476X_BAND_FM].rangelow;
- }
-
- tuner->audmode = radio->audmode;
-
- tuner->afc = 1;
- tuner->rangehigh = si476x_bands[SI476X_BAND_FM].rangehigh;
-
- err = radio->ops->rsq_status(radio->core,
- &args, &report);
- if (err < 0) {
- tuner->signal = 0;
- } else {
- /*
- * tuner->signal value range: 0x0000 .. 0xFFFF,
- * report.rssi: -128 .. 127
- */
- tuner->signal = (report.rssi + 128) * 257;
- }
- si476x_core_unlock(radio->core);
-
- return err;
-}
-
-static int si476x_radio_s_tuner(struct file *file, void *priv,
- const struct v4l2_tuner *tuner)
-{
- struct si476x_radio *radio = video_drvdata(file);
-
- if (tuner->index != 0)
- return -EINVAL;
-
- if (tuner->audmode == V4L2_TUNER_MODE_MONO ||
- tuner->audmode == V4L2_TUNER_MODE_STEREO)
- radio->audmode = tuner->audmode;
- else
- radio->audmode = V4L2_TUNER_MODE_STEREO;
-
- return 0;
-}
-
-static int si476x_radio_init_vtable(struct si476x_radio *radio,
- enum si476x_func func)
-{
- static const struct si476x_radio_ops fm_ops = {
- .tune_freq = si476x_core_cmd_fm_tune_freq,
- .seek_start = si476x_core_cmd_fm_seek_start,
- .rsq_status = si476x_core_cmd_fm_rsq_status,
- .rds_blckcnt = si476x_core_cmd_fm_rds_blockcount,
- .phase_diversity = si476x_core_cmd_fm_phase_diversity,
- .phase_div_status = si476x_core_cmd_fm_phase_div_status,
- .acf_status = si476x_core_cmd_fm_acf_status,
- .agc_status = si476x_core_cmd_agc_status,
- };
-
- static const struct si476x_radio_ops am_ops = {
- .tune_freq = si476x_core_cmd_am_tune_freq,
- .seek_start = si476x_core_cmd_am_seek_start,
- .rsq_status = si476x_core_cmd_am_rsq_status,
- .rds_blckcnt = NULL,
- .phase_diversity = NULL,
- .phase_div_status = NULL,
- .acf_status = si476x_core_cmd_am_acf_status,
- .agc_status = NULL,
- };
-
- switch (func) {
- case SI476X_FUNC_FM_RECEIVER:
- radio->ops = &fm_ops;
- return 0;
-
- case SI476X_FUNC_AM_RECEIVER:
- radio->ops = &am_ops;
- return 0;
- default:
- WARN(1, "Unexpected tuner function value\n");
- return -EINVAL;
- }
-}
-
-static int si476x_radio_pretune(struct si476x_radio *radio,
- enum si476x_func func)
-{
- int retval;
-
- struct si476x_tune_freq_args args = {
- .zifsr = false,
- .hd = false,
- .injside = SI476X_INJSIDE_AUTO,
- .tunemode = SI476X_TM_VALIDATED_NORMAL_TUNE,
- .smoothmetrics = SI476X_SM_INITIALIZE_AUDIO,
- .antcap = 0,
- };
-
- switch (func) {
- case SI476X_FUNC_FM_RECEIVER:
- args.freq = v4l2_to_si476x(radio->core,
- 92 * FREQ_MUL);
- retval = radio->ops->tune_freq(radio->core, &args);
- break;
- case SI476X_FUNC_AM_RECEIVER:
- args.freq = v4l2_to_si476x(radio->core,
- 0.6 * FREQ_MUL);
- retval = radio->ops->tune_freq(radio->core, &args);
- break;
- default:
- WARN(1, "Unexpected tuner function value\n");
- retval = -EINVAL;
- }
-
- return retval;
-}
-static int si476x_radio_do_post_powerup_init(struct si476x_radio *radio,
- enum si476x_func func)
-{
- int err;
-
- /* regcache_mark_dirty(radio->core->regmap); */
- err = regcache_sync_region(radio->core->regmap,
- SI476X_PROP_DIGITAL_IO_INPUT_SAMPLE_RATE,
- SI476X_PROP_DIGITAL_IO_OUTPUT_FORMAT);
- if (err < 0)
- return err;
-
- err = regcache_sync_region(radio->core->regmap,
- SI476X_PROP_AUDIO_DEEMPHASIS,
- SI476X_PROP_AUDIO_PWR_LINE_FILTER);
- if (err < 0)
- return err;
-
- err = regcache_sync_region(radio->core->regmap,
- SI476X_PROP_INT_CTL_ENABLE,
- SI476X_PROP_INT_CTL_ENABLE);
- if (err < 0)
- return err;
-
- /*
- * Is there any point in restoring SNR and the like
- * when switching between AM/FM?
- */
- err = regcache_sync_region(radio->core->regmap,
- SI476X_PROP_VALID_MAX_TUNE_ERROR,
- SI476X_PROP_VALID_MAX_TUNE_ERROR);
- if (err < 0)
- return err;
-
- err = regcache_sync_region(radio->core->regmap,
- SI476X_PROP_VALID_SNR_THRESHOLD,
- SI476X_PROP_VALID_RSSI_THRESHOLD);
- if (err < 0)
- return err;
-
- if (func == SI476X_FUNC_FM_RECEIVER) {
- if (si476x_core_has_diversity(radio->core)) {
- err = si476x_core_cmd_fm_phase_diversity(radio->core,
- radio->core->diversity_mode);
- if (err < 0)
- return err;
- }
-
- err = regcache_sync_region(radio->core->regmap,
- SI476X_PROP_FM_RDS_INTERRUPT_SOURCE,
- SI476X_PROP_FM_RDS_CONFIG);
- if (err < 0)
- return err;
- }
-
- return si476x_radio_init_vtable(radio, func);
-
-}
-
-static int si476x_radio_change_func(struct si476x_radio *radio,
- enum si476x_func func)
-{
- int err;
- bool soft;
- /*
- * Since power/up down is a very time consuming operation,
- * try to avoid doing it if the requested mode matches the one
- * the tuner is in
- */
- if (func == radio->core->power_up_parameters.func)
- return 0;
-
- soft = true;
- err = si476x_core_stop(radio->core, soft);
- if (err < 0) {
- /*
- * OK, if the chip does not want to play nice let's
- * try to reset it in more brutal way
- */
- soft = false;
- err = si476x_core_stop(radio->core, soft);
- if (err < 0)
- return err;
- }
- /*
- Set the desired radio tuner function
- */
- radio->core->power_up_parameters.func = func;
-
- err = si476x_core_start(radio->core, soft);
- if (err < 0)
- return err;
-
- /*
- * No need to do the rest of manipulations for the bootlader
- * mode
- */
- if (func != SI476X_FUNC_FM_RECEIVER &&
- func != SI476X_FUNC_AM_RECEIVER)
- return err;
-
- return si476x_radio_do_post_powerup_init(radio, func);
-}
-
-static int si476x_radio_g_frequency(struct file *file, void *priv,
- struct v4l2_frequency *f)
-{
- int err;
- struct si476x_radio *radio = video_drvdata(file);
-
- if (f->tuner != 0 ||
- f->type != V4L2_TUNER_RADIO)
- return -EINVAL;
-
- si476x_core_lock(radio->core);
-
- if (radio->ops->rsq_status) {
- struct si476x_rsq_status_report report;
- struct si476x_rsq_status_args args = {
- .primary = false,
- .rsqack = false,
- .attune = true,
- .cancel = false,
- .stcack = false,
- };
-
- err = radio->ops->rsq_status(radio->core, &args, &report);
- if (!err)
- f->frequency = si476x_to_v4l2(radio->core,
- report.readfreq);
- } else {
- err = -EINVAL;
- }
-
- si476x_core_unlock(radio->core);
-
- return err;
-}
-
-static int si476x_radio_s_frequency(struct file *file, void *priv,
- const struct v4l2_frequency *f)
-{
- int err;
- u32 freq = f->frequency;
- struct si476x_tune_freq_args args;
- struct si476x_radio *radio = video_drvdata(file);
-
- const u32 midrange = (si476x_bands[SI476X_BAND_AM].rangehigh +
- si476x_bands[SI476X_BAND_FM].rangelow) / 2;
- const int band = (freq > midrange) ?
- SI476X_BAND_FM : SI476X_BAND_AM;
- const enum si476x_func func = (band == SI476X_BAND_AM) ?
- SI476X_FUNC_AM_RECEIVER : SI476X_FUNC_FM_RECEIVER;
-
- if (f->tuner != 0 ||
- f->type != V4L2_TUNER_RADIO)
- return -EINVAL;
-
- si476x_core_lock(radio->core);
-
- freq = clamp(freq,
- si476x_bands[band].rangelow,
- si476x_bands[band].rangehigh);
-
- if (si476x_radio_freq_is_inside_of_the_band(freq,
- SI476X_BAND_AM) &&
- (!si476x_core_has_am(radio->core) ||
- si476x_core_is_a_secondary_tuner(radio->core))) {
- err = -EINVAL;
- goto unlock;
- }
-
- err = si476x_radio_change_func(radio, func);
- if (err < 0)
- goto unlock;
-
- args.zifsr = false;
- args.hd = false;
- args.injside = SI476X_INJSIDE_AUTO;
- args.freq = v4l2_to_si476x(radio->core, freq);
- args.tunemode = SI476X_TM_VALIDATED_NORMAL_TUNE;
- args.smoothmetrics = SI476X_SM_INITIALIZE_AUDIO;
- args.antcap = 0;
-
- err = radio->ops->tune_freq(radio->core, &args);
-
-unlock:
- si476x_core_unlock(radio->core);
- return err;
-}
-
-static int si476x_radio_s_hw_freq_seek(struct file *file, void *priv,
- const struct v4l2_hw_freq_seek *seek)
-{
- int err;
- enum si476x_func func;
- u32 rangelow, rangehigh;
- struct si476x_radio *radio = video_drvdata(file);
-
- if (file->f_flags & O_NONBLOCK)
- return -EAGAIN;
-
- if (seek->tuner != 0 ||
- seek->type != V4L2_TUNER_RADIO)
- return -EINVAL;
-
- si476x_core_lock(radio->core);
-
- if (!seek->rangelow) {
- err = regmap_read(radio->core->regmap,
- SI476X_PROP_SEEK_BAND_BOTTOM,
- &rangelow);
- if (!err)
- rangelow = si476x_to_v4l2(radio->core, rangelow);
- else
- goto unlock;
- }
- if (!seek->rangehigh) {
- err = regmap_read(radio->core->regmap,
- SI476X_PROP_SEEK_BAND_TOP,
- &rangehigh);
- if (!err)
- rangehigh = si476x_to_v4l2(radio->core, rangehigh);
- else
- goto unlock;
- }
-
- if (rangelow > rangehigh) {
- err = -EINVAL;
- goto unlock;
- }
-
- if (si476x_radio_range_is_inside_of_the_band(rangelow, rangehigh,
- SI476X_BAND_FM)) {
- func = SI476X_FUNC_FM_RECEIVER;
-
- } else if (si476x_core_has_am(radio->core) &&
- si476x_radio_range_is_inside_of_the_band(rangelow, rangehigh,
- SI476X_BAND_AM)) {
- func = SI476X_FUNC_AM_RECEIVER;
- } else {
- err = -EINVAL;
- goto unlock;
- }
-
- err = si476x_radio_change_func(radio, func);
- if (err < 0)
- goto unlock;
-
- if (seek->rangehigh) {
- err = regmap_write(radio->core->regmap,
- SI476X_PROP_SEEK_BAND_TOP,
- v4l2_to_si476x(radio->core,
- seek->rangehigh));
- if (err)
- goto unlock;
- }
- if (seek->rangelow) {
- err = regmap_write(radio->core->regmap,
- SI476X_PROP_SEEK_BAND_BOTTOM,
- v4l2_to_si476x(radio->core,
- seek->rangelow));
- if (err)
- goto unlock;
- }
- if (seek->spacing) {
- err = regmap_write(radio->core->regmap,
- SI476X_PROP_SEEK_FREQUENCY_SPACING,
- v4l2_to_si476x(radio->core,
- seek->spacing));
- if (err)
- goto unlock;
- }
-
- err = radio->ops->seek_start(radio->core,
- seek->seek_upward,
- seek->wrap_around);
-unlock:
- si476x_core_unlock(radio->core);
-
-
-
- return err;
-}
-
-static int si476x_radio_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
-{
- int retval;
- struct si476x_radio *radio = v4l2_ctrl_handler_to_radio(ctrl->handler);
-
- si476x_core_lock(radio->core);
-
- switch (ctrl->id) {
- case V4L2_CID_SI476X_INTERCHIP_LINK:
- if (si476x_core_has_diversity(radio->core)) {
- if (radio->ops->phase_diversity) {
- retval = radio->ops->phase_div_status(radio->core);
- if (retval < 0)
- break;
-
- ctrl->val = !!SI476X_PHDIV_STATUS_LINK_LOCKED(retval);
- retval = 0;
- break;
- } else {
- retval = -ENOTTY;
- break;
- }
- }
- retval = -EINVAL;
- break;
- default:
- retval = -EINVAL;
- break;
- }
- si476x_core_unlock(radio->core);
- return retval;
-
-}
-
-static int si476x_radio_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- int retval;
- enum si476x_phase_diversity_mode mode;
- struct si476x_radio *radio = v4l2_ctrl_handler_to_radio(ctrl->handler);
-
- si476x_core_lock(radio->core);
-
- switch (ctrl->id) {
- case V4L2_CID_SI476X_HARMONICS_COUNT:
- retval = regmap_update_bits(radio->core->regmap,
- SI476X_PROP_AUDIO_PWR_LINE_FILTER,
- SI476X_PROP_PWR_HARMONICS_MASK,
- ctrl->val);
- break;
- case V4L2_CID_POWER_LINE_FREQUENCY:
- switch (ctrl->val) {
- case V4L2_CID_POWER_LINE_FREQUENCY_DISABLED:
- retval = regmap_update_bits(radio->core->regmap,
- SI476X_PROP_AUDIO_PWR_LINE_FILTER,
- SI476X_PROP_PWR_ENABLE_MASK,
- 0);
- break;
- case V4L2_CID_POWER_LINE_FREQUENCY_50HZ:
- retval = regmap_update_bits(radio->core->regmap,
- SI476X_PROP_AUDIO_PWR_LINE_FILTER,
- SI476X_PROP_PWR_GRID_MASK,
- SI476X_PROP_PWR_GRID_50HZ);
- break;
- case V4L2_CID_POWER_LINE_FREQUENCY_60HZ:
- retval = regmap_update_bits(radio->core->regmap,
- SI476X_PROP_AUDIO_PWR_LINE_FILTER,
- SI476X_PROP_PWR_GRID_MASK,
- SI476X_PROP_PWR_GRID_60HZ);
- break;
- default:
- retval = -EINVAL;
- break;
- }
- break;
- case V4L2_CID_SI476X_RSSI_THRESHOLD:
- retval = regmap_write(radio->core->regmap,
- SI476X_PROP_VALID_RSSI_THRESHOLD,
- ctrl->val);
- break;
- case V4L2_CID_SI476X_SNR_THRESHOLD:
- retval = regmap_write(radio->core->regmap,
- SI476X_PROP_VALID_SNR_THRESHOLD,
- ctrl->val);
- break;
- case V4L2_CID_SI476X_MAX_TUNE_ERROR:
- retval = regmap_write(radio->core->regmap,
- SI476X_PROP_VALID_MAX_TUNE_ERROR,
- ctrl->val);
- break;
- case V4L2_CID_RDS_RECEPTION:
- /*
- * It looks like RDS related properties are
- * inaccesable when tuner is in AM mode, so cache the
- * changes
- */
- if (si476x_core_is_in_am_receiver_mode(radio->core))
- regcache_cache_only(radio->core->regmap, true);
-
- if (ctrl->val) {
- retval = regmap_write(radio->core->regmap,
- SI476X_PROP_FM_RDS_INTERRUPT_FIFO_COUNT,
- radio->core->rds_fifo_depth);
- if (retval < 0)
- break;
-
- if (radio->core->client->irq) {
- retval = regmap_write(radio->core->regmap,
- SI476X_PROP_FM_RDS_INTERRUPT_SOURCE,
- SI476X_RDSRECV);
- if (retval < 0)
- break;
- }
-
- /* Drain RDS FIFO before enabling RDS processing */
- retval = si476x_core_cmd_fm_rds_status(radio->core,
- false,
- true,
- true,
- NULL);
- if (retval < 0)
- break;
-
- retval = regmap_update_bits(radio->core->regmap,
- SI476X_PROP_FM_RDS_CONFIG,
- SI476X_PROP_RDSEN_MASK,
- SI476X_PROP_RDSEN);
- } else {
- retval = regmap_update_bits(radio->core->regmap,
- SI476X_PROP_FM_RDS_CONFIG,
- SI476X_PROP_RDSEN_MASK,
- !SI476X_PROP_RDSEN);
- }
-
- if (si476x_core_is_in_am_receiver_mode(radio->core))
- regcache_cache_only(radio->core->regmap, false);
- break;
- case V4L2_CID_TUNE_DEEMPHASIS:
- retval = regmap_write(radio->core->regmap,
- SI476X_PROP_AUDIO_DEEMPHASIS,
- ctrl->val);
- break;
-
- case V4L2_CID_SI476X_DIVERSITY_MODE:
- mode = si476x_phase_diversity_idx_to_mode(ctrl->val);
-
- if (mode == radio->core->diversity_mode) {
- retval = 0;
- break;
- }
-
- if (si476x_core_is_in_am_receiver_mode(radio->core)) {
- /*
- * Diversity cannot be configured while tuner
- * is in AM mode so save the changes and carry on.
- */
- radio->core->diversity_mode = mode;
- retval = 0;
- } else {
- retval = radio->ops->phase_diversity(radio->core, mode);
- if (!retval)
- radio->core->diversity_mode = mode;
- }
- break;
-
- default:
- retval = -EINVAL;
- break;
- }
-
- si476x_core_unlock(radio->core);
-
- return retval;
-}
-
-static int si476x_radio_g_chip_ident(struct file *file, void *fh,
- struct v4l2_dbg_chip_ident *chip)
-{
- if (chip->match.type == V4L2_CHIP_MATCH_HOST &&
- v4l2_chip_match_host(&chip->match))
- return 0;
- return -EINVAL;
-}
-
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int si476x_radio_g_register(struct file *file, void *fh,
- struct v4l2_dbg_register *reg)
-{
- int err;
- unsigned int value;
- struct si476x_radio *radio = video_drvdata(file);
-
- si476x_core_lock(radio->core);
- reg->size = 2;
- err = regmap_read(radio->core->regmap,
- (unsigned int)reg->reg, &value);
- reg->val = value;
- si476x_core_unlock(radio->core);
-
- return err;
-}
-static int si476x_radio_s_register(struct file *file, void *fh,
- const struct v4l2_dbg_register *reg)
-{
-
- int err;
- struct si476x_radio *radio = video_drvdata(file);
-
- si476x_core_lock(radio->core);
- err = regmap_write(radio->core->regmap,
- (unsigned int)reg->reg,
- (unsigned int)reg->val);
- si476x_core_unlock(radio->core);
-
- return err;
-}
-#endif
-
-static int si476x_radio_fops_open(struct file *file)
-{
- struct si476x_radio *radio = video_drvdata(file);
- int err;
-
- err = v4l2_fh_open(file);
- if (err)
- return err;
-
- if (v4l2_fh_is_singular_file(file)) {
- si476x_core_lock(radio->core);
- err = si476x_core_set_power_state(radio->core,
- SI476X_POWER_UP_FULL);
- if (err < 0)
- goto done;
-
- err = si476x_radio_do_post_powerup_init(radio,
- radio->core->power_up_parameters.func);
- if (err < 0)
- goto power_down;
-
- err = si476x_radio_pretune(radio,
- radio->core->power_up_parameters.func);
- if (err < 0)
- goto power_down;
-
- si476x_core_unlock(radio->core);
- /*Must be done after si476x_core_unlock to prevent a deadlock*/
- v4l2_ctrl_handler_setup(&radio->ctrl_handler);
- }
-
- return err;
-
-power_down:
- si476x_core_set_power_state(radio->core,
- SI476X_POWER_DOWN);
-done:
- si476x_core_unlock(radio->core);
- v4l2_fh_release(file);
-
- return err;
-}
-
-static int si476x_radio_fops_release(struct file *file)
-{
- int err;
- struct si476x_radio *radio = video_drvdata(file);
-
- if (v4l2_fh_is_singular_file(file) &&
- atomic_read(&radio->core->is_alive))
- si476x_core_set_power_state(radio->core,
- SI476X_POWER_DOWN);
-
- err = v4l2_fh_release(file);
-
- return err;
-}
-
-static ssize_t si476x_radio_fops_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- ssize_t rval;
- size_t fifo_len;
- unsigned int copied;
-
- struct si476x_radio *radio = video_drvdata(file);
-
- /* block if no new data available */
- if (kfifo_is_empty(&radio->core->rds_fifo)) {
- if (file->f_flags & O_NONBLOCK)
- return -EWOULDBLOCK;
-
- rval = wait_event_interruptible(radio->core->rds_read_queue,
- (!kfifo_is_empty(&radio->core->rds_fifo) ||
- !atomic_read(&radio->core->is_alive)));
- if (rval < 0)
- return -EINTR;
-
- if (!atomic_read(&radio->core->is_alive))
- return -ENODEV;
- }
-
- fifo_len = kfifo_len(&radio->core->rds_fifo);
-
- if (kfifo_to_user(&radio->core->rds_fifo, buf,
- min(fifo_len, count),
- &copied) != 0) {
- dev_warn(&radio->videodev.dev,
- "Error during FIFO to userspace copy\n");
- rval = -EIO;
- } else {
- rval = (ssize_t)copied;
- }
-
- return rval;
-}
-
-static unsigned int si476x_radio_fops_poll(struct file *file,
- struct poll_table_struct *pts)
-{
- struct si476x_radio *radio = video_drvdata(file);
- unsigned long req_events = poll_requested_events(pts);
- unsigned int err = v4l2_ctrl_poll(file, pts);
-
- if (req_events & (POLLIN | POLLRDNORM)) {
- if (atomic_read(&radio->core->is_alive))
- poll_wait(file, &radio->core->rds_read_queue, pts);
-
- if (!atomic_read(&radio->core->is_alive))
- err = POLLHUP;
-
- if (!kfifo_is_empty(&radio->core->rds_fifo))
- err = POLLIN | POLLRDNORM;
- }
-
- return err;
-}
-
-static const struct v4l2_file_operations si476x_fops = {
- .owner = THIS_MODULE,
- .read = si476x_radio_fops_read,
- .poll = si476x_radio_fops_poll,
- .unlocked_ioctl = video_ioctl2,
- .open = si476x_radio_fops_open,
- .release = si476x_radio_fops_release,
-};
-
-
-static const struct v4l2_ioctl_ops si4761_ioctl_ops = {
- .vidioc_querycap = si476x_radio_querycap,
- .vidioc_g_tuner = si476x_radio_g_tuner,
- .vidioc_s_tuner = si476x_radio_s_tuner,
-
- .vidioc_g_frequency = si476x_radio_g_frequency,
- .vidioc_s_frequency = si476x_radio_s_frequency,
- .vidioc_s_hw_freq_seek = si476x_radio_s_hw_freq_seek,
- .vidioc_enum_freq_bands = si476x_radio_enum_freq_bands,
-
- .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
- .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
-
- .vidioc_g_chip_ident = si476x_radio_g_chip_ident,
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- .vidioc_g_register = si476x_radio_g_register,
- .vidioc_s_register = si476x_radio_s_register,
-#endif
-};
-
-
-static const struct video_device si476x_viddev_template = {
- .fops = &si476x_fops,
- .name = DRIVER_NAME,
- .release = video_device_release_empty,
-};
-
-
-
-static ssize_t si476x_radio_read_acf_blob(struct file *file,
- char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- int err;
- struct si476x_radio *radio = file->private_data;
- struct si476x_acf_status_report report;
-
- si476x_core_lock(radio->core);
- if (radio->ops->acf_status)
- err = radio->ops->acf_status(radio->core, &report);
- else
- err = -ENOENT;
- si476x_core_unlock(radio->core);
-
- if (err < 0)
- return err;
-
- return simple_read_from_buffer(user_buf, count, ppos, &report,
- sizeof(report));
-}
-
-static const struct file_operations radio_acf_fops = {
- .open = simple_open,
- .llseek = default_llseek,
- .read = si476x_radio_read_acf_blob,
-};
-
-static ssize_t si476x_radio_read_rds_blckcnt_blob(struct file *file,
- char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- int err;
- struct si476x_radio *radio = file->private_data;
- struct si476x_rds_blockcount_report report;
-
- si476x_core_lock(radio->core);
- if (radio->ops->rds_blckcnt)
- err = radio->ops->rds_blckcnt(radio->core, true,
- &report);
- else
- err = -ENOENT;
- si476x_core_unlock(radio->core);
-
- if (err < 0)
- return err;
-
- return simple_read_from_buffer(user_buf, count, ppos, &report,
- sizeof(report));
-}
-
-static const struct file_operations radio_rds_blckcnt_fops = {
- .open = simple_open,
- .llseek = default_llseek,
- .read = si476x_radio_read_rds_blckcnt_blob,
-};
-
-static ssize_t si476x_radio_read_agc_blob(struct file *file,
- char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- int err;
- struct si476x_radio *radio = file->private_data;
- struct si476x_agc_status_report report;
-
- si476x_core_lock(radio->core);
- if (radio->ops->rds_blckcnt)
- err = radio->ops->agc_status(radio->core, &report);
- else
- err = -ENOENT;
- si476x_core_unlock(radio->core);
-
- if (err < 0)
- return err;
-
- return simple_read_from_buffer(user_buf, count, ppos, &report,
- sizeof(report));
-}
-
-static const struct file_operations radio_agc_fops = {
- .open = simple_open,
- .llseek = default_llseek,
- .read = si476x_radio_read_agc_blob,
-};
-
-static ssize_t si476x_radio_read_rsq_blob(struct file *file,
- char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- int err;
- struct si476x_radio *radio = file->private_data;
- struct si476x_rsq_status_report report;
- struct si476x_rsq_status_args args = {
- .primary = false,
- .rsqack = false,
- .attune = false,
- .cancel = false,
- .stcack = false,
- };
-
- si476x_core_lock(radio->core);
- if (radio->ops->rds_blckcnt)
- err = radio->ops->rsq_status(radio->core, &args, &report);
- else
- err = -ENOENT;
- si476x_core_unlock(radio->core);
-
- if (err < 0)
- return err;
-
- return simple_read_from_buffer(user_buf, count, ppos, &report,
- sizeof(report));
-}
-
-static const struct file_operations radio_rsq_fops = {
- .open = simple_open,
- .llseek = default_llseek,
- .read = si476x_radio_read_rsq_blob,
-};
-
-static ssize_t si476x_radio_read_rsq_primary_blob(struct file *file,
- char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- int err;
- struct si476x_radio *radio = file->private_data;
- struct si476x_rsq_status_report report;
- struct si476x_rsq_status_args args = {
- .primary = true,
- .rsqack = false,
- .attune = false,
- .cancel = false,
- .stcack = false,
- };
-
- si476x_core_lock(radio->core);
- if (radio->ops->rds_blckcnt)
- err = radio->ops->rsq_status(radio->core, &args, &report);
- else
- err = -ENOENT;
- si476x_core_unlock(radio->core);
-
- if (err < 0)
- return err;
-
- return simple_read_from_buffer(user_buf, count, ppos, &report,
- sizeof(report));
-}
-
-static const struct file_operations radio_rsq_primary_fops = {
- .open = simple_open,
- .llseek = default_llseek,
- .read = si476x_radio_read_rsq_primary_blob,
-};
-
-
-static int si476x_radio_init_debugfs(struct si476x_radio *radio)
-{
- struct dentry *dentry;
- int ret;
-
- dentry = debugfs_create_dir(dev_name(radio->v4l2dev.dev), NULL);
- if (IS_ERR(dentry)) {
- ret = PTR_ERR(dentry);
- goto exit;
- }
- radio->debugfs = dentry;
-
- dentry = debugfs_create_file("acf", S_IRUGO,
- radio->debugfs, radio, &radio_acf_fops);
- if (IS_ERR(dentry)) {
- ret = PTR_ERR(dentry);
- goto cleanup;
- }
-
- dentry = debugfs_create_file("rds_blckcnt", S_IRUGO,
- radio->debugfs, radio,
- &radio_rds_blckcnt_fops);
- if (IS_ERR(dentry)) {
- ret = PTR_ERR(dentry);
- goto cleanup;
- }
-
- dentry = debugfs_create_file("agc", S_IRUGO,
- radio->debugfs, radio, &radio_agc_fops);
- if (IS_ERR(dentry)) {
- ret = PTR_ERR(dentry);
- goto cleanup;
- }
-
- dentry = debugfs_create_file("rsq", S_IRUGO,
- radio->debugfs, radio, &radio_rsq_fops);
- if (IS_ERR(dentry)) {
- ret = PTR_ERR(dentry);
- goto cleanup;
- }
-
- dentry = debugfs_create_file("rsq_primary", S_IRUGO,
- radio->debugfs, radio,
- &radio_rsq_primary_fops);
- if (IS_ERR(dentry)) {
- ret = PTR_ERR(dentry);
- goto cleanup;
- }
-
- return 0;
-cleanup:
- debugfs_remove_recursive(radio->debugfs);
-exit:
- return ret;
-}
-
-
-static int si476x_radio_add_new_custom(struct si476x_radio *radio,
- enum si476x_ctrl_idx idx)
-{
- int rval;
- struct v4l2_ctrl *ctrl;
-
- ctrl = v4l2_ctrl_new_custom(&radio->ctrl_handler,
- &si476x_ctrls[idx],
- NULL);
- rval = radio->ctrl_handler.error;
- if (ctrl == NULL && rval)
- dev_err(radio->v4l2dev.dev,
- "Could not initialize '%s' control %d\n",
- si476x_ctrls[idx].name, rval);
-
- return rval;
-}
-
-static int si476x_radio_probe(struct platform_device *pdev)
-{
- int rval;
- struct si476x_radio *radio;
- struct v4l2_ctrl *ctrl;
-
- static atomic_t instance = ATOMIC_INIT(0);
-
- radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
- if (!radio)
- return -ENOMEM;
-
- radio->core = i2c_mfd_cell_to_core(&pdev->dev);
-
- v4l2_device_set_name(&radio->v4l2dev, DRIVER_NAME, &instance);
-
- rval = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
- if (rval) {
- dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
- return rval;
- }
-
- memcpy(&radio->videodev, &si476x_viddev_template,
- sizeof(struct video_device));
-
- radio->videodev.v4l2_dev = &radio->v4l2dev;
- radio->videodev.ioctl_ops = &si4761_ioctl_ops;
-
- video_set_drvdata(&radio->videodev, radio);
- platform_set_drvdata(pdev, radio);
-
- set_bit(V4L2_FL_USE_FH_PRIO, &radio->videodev.flags);
-
- radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
- v4l2_ctrl_handler_init(&radio->ctrl_handler,
- 1 + ARRAY_SIZE(si476x_ctrls));
-
- if (si476x_core_has_am(radio->core)) {
- ctrl = v4l2_ctrl_new_std_menu(&radio->ctrl_handler,
- &si476x_ctrl_ops,
- V4L2_CID_POWER_LINE_FREQUENCY,
- V4L2_CID_POWER_LINE_FREQUENCY_60HZ,
- 0, 0);
- rval = radio->ctrl_handler.error;
- if (ctrl == NULL && rval) {
- dev_err(&pdev->dev, "Could not initialize V4L2_CID_POWER_LINE_FREQUENCY control %d\n",
- rval);
- goto exit;
- }
-
- rval = si476x_radio_add_new_custom(radio,
- SI476X_IDX_HARMONICS_COUNT);
- if (rval < 0)
- goto exit;
- }
-
- rval = si476x_radio_add_new_custom(radio, SI476X_IDX_RSSI_THRESHOLD);
- if (rval < 0)
- goto exit;
-
- rval = si476x_radio_add_new_custom(radio, SI476X_IDX_SNR_THRESHOLD);
- if (rval < 0)
- goto exit;
-
- rval = si476x_radio_add_new_custom(radio, SI476X_IDX_MAX_TUNE_ERROR);
- if (rval < 0)
- goto exit;
-
- ctrl = v4l2_ctrl_new_std_menu(&radio->ctrl_handler,
- &si476x_ctrl_ops,
- V4L2_CID_TUNE_DEEMPHASIS,
- V4L2_DEEMPHASIS_75_uS, 0, 0);
- rval = radio->ctrl_handler.error;
- if (ctrl == NULL && rval) {
- dev_err(&pdev->dev, "Could not initialize V4L2_CID_TUNE_DEEMPHASIS control %d\n",
- rval);
- goto exit;
- }
-
- ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &si476x_ctrl_ops,
- V4L2_CID_RDS_RECEPTION,
- 0, 1, 1, 1);
- rval = radio->ctrl_handler.error;
- if (ctrl == NULL && rval) {
- dev_err(&pdev->dev, "Could not initialize V4L2_CID_RDS_RECEPTION control %d\n",
- rval);
- goto exit;
- }
-
- if (si476x_core_has_diversity(radio->core)) {
- si476x_ctrls[SI476X_IDX_DIVERSITY_MODE].def =
- si476x_phase_diversity_mode_to_idx(radio->core->diversity_mode);
- si476x_radio_add_new_custom(radio, SI476X_IDX_DIVERSITY_MODE);
- if (rval < 0)
- goto exit;
-
- si476x_radio_add_new_custom(radio, SI476X_IDX_INTERCHIP_LINK);
- if (rval < 0)
- goto exit;
- }
-
- /* register video device */
- rval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, -1);
- if (rval < 0) {
- dev_err(&pdev->dev, "Could not register video device\n");
- goto exit;
- }
-
- rval = si476x_radio_init_debugfs(radio);
- if (rval < 0) {
- dev_err(&pdev->dev, "Could not creat debugfs interface\n");
- goto exit;
- }
-
- return 0;
-exit:
- v4l2_ctrl_handler_free(radio->videodev.ctrl_handler);
- return rval;
-}
-
-static int si476x_radio_remove(struct platform_device *pdev)
-{
- struct si476x_radio *radio = platform_get_drvdata(pdev);
-
- v4l2_ctrl_handler_free(radio->videodev.ctrl_handler);
- video_unregister_device(&radio->videodev);
- v4l2_device_unregister(&radio->v4l2dev);
- debugfs_remove_recursive(radio->debugfs);
-
- return 0;
-}
-
-MODULE_ALIAS("platform:si476x-radio");
-
-static struct platform_driver si476x_radio_driver = {
- .driver = {
- .name = DRIVER_NAME,
- .owner = THIS_MODULE,
- },
- .probe = si476x_radio_probe,
- .remove = si476x_radio_remove,
-};
-module_platform_driver(si476x_radio_driver);
-
-MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
-MODULE_DESCRIPTION("Driver for Si4761/64/68 AM/FM Radio MFD Cell");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * include/media/si476x.h -- Common definitions for si476x driver
- *
- * Copyright (C) 2012 Innovative Converged Devices(ICD)
- * Copyright (C) 2013 Andrey Smirnov
- *
- * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
- *
- * 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 program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- */
-
-#ifndef SI476X_H
-#define SI476X_H
-
-#include <linux/types.h>
-#include <linux/videodev2.h>
-
-struct si476x_device;
-
-/* It is possible to select one of the four adresses using pins A0
- * and A1 on SI476x */
-#define SI476X_I2C_ADDR_1 0x60
-#define SI476X_I2C_ADDR_2 0x61
-#define SI476X_I2C_ADDR_3 0x62
-#define SI476X_I2C_ADDR_4 0x63
-
-enum si476x_iqclk_config {
- SI476X_IQCLK_NOOP = 0,
- SI476X_IQCLK_TRISTATE = 1,
- SI476X_IQCLK_IQ = 21,
-};
-enum si476x_iqfs_config {
- SI476X_IQFS_NOOP = 0,
- SI476X_IQFS_TRISTATE = 1,
- SI476X_IQFS_IQ = 21,
-};
-enum si476x_iout_config {
- SI476X_IOUT_NOOP = 0,
- SI476X_IOUT_TRISTATE = 1,
- SI476X_IOUT_OUTPUT = 22,
-};
-enum si476x_qout_config {
- SI476X_QOUT_NOOP = 0,
- SI476X_QOUT_TRISTATE = 1,
- SI476X_QOUT_OUTPUT = 22,
-};
-
-enum si476x_dclk_config {
- SI476X_DCLK_NOOP = 0,
- SI476X_DCLK_TRISTATE = 1,
- SI476X_DCLK_DAUDIO = 10,
-};
-
-enum si476x_dfs_config {
- SI476X_DFS_NOOP = 0,
- SI476X_DFS_TRISTATE = 1,
- SI476X_DFS_DAUDIO = 10,
-};
-
-enum si476x_dout_config {
- SI476X_DOUT_NOOP = 0,
- SI476X_DOUT_TRISTATE = 1,
- SI476X_DOUT_I2S_OUTPUT = 12,
- SI476X_DOUT_I2S_INPUT = 13,
-};
-
-enum si476x_xout_config {
- SI476X_XOUT_NOOP = 0,
- SI476X_XOUT_TRISTATE = 1,
- SI476X_XOUT_I2S_INPUT = 13,
- SI476X_XOUT_MODE_SELECT = 23,
-};
-
-
-enum si476x_icin_config {
- SI476X_ICIN_NOOP = 0,
- SI476X_ICIN_TRISTATE = 1,
- SI476X_ICIN_GPO1_HIGH = 2,
- SI476X_ICIN_GPO1_LOW = 3,
- SI476X_ICIN_IC_LINK = 30,
-};
-
-enum si476x_icip_config {
- SI476X_ICIP_NOOP = 0,
- SI476X_ICIP_TRISTATE = 1,
- SI476X_ICIP_GPO2_HIGH = 2,
- SI476X_ICIP_GPO2_LOW = 3,
- SI476X_ICIP_IC_LINK = 30,
-};
-
-enum si476x_icon_config {
- SI476X_ICON_NOOP = 0,
- SI476X_ICON_TRISTATE = 1,
- SI476X_ICON_I2S = 10,
- SI476X_ICON_IC_LINK = 30,
-};
-
-enum si476x_icop_config {
- SI476X_ICOP_NOOP = 0,
- SI476X_ICOP_TRISTATE = 1,
- SI476X_ICOP_I2S = 10,
- SI476X_ICOP_IC_LINK = 30,
-};
-
-
-enum si476x_lrout_config {
- SI476X_LROUT_NOOP = 0,
- SI476X_LROUT_TRISTATE = 1,
- SI476X_LROUT_AUDIO = 2,
- SI476X_LROUT_MPX = 3,
-};
-
-
-enum si476x_intb_config {
- SI476X_INTB_NOOP = 0,
- SI476X_INTB_TRISTATE = 1,
- SI476X_INTB_DAUDIO = 10,
- SI476X_INTB_IRQ = 40,
-};
-
-enum si476x_a1_config {
- SI476X_A1_NOOP = 0,
- SI476X_A1_TRISTATE = 1,
- SI476X_A1_IRQ = 40,
-};
-
-enum si476x_part_revisions {
- SI476X_REVISION_A10 = 0,
- SI476X_REVISION_A20 = 1,
- SI476X_REVISION_A30 = 2,
-};
-
-struct si476x_pinmux {
- enum si476x_dclk_config dclk;
- enum si476x_dfs_config dfs;
- enum si476x_dout_config dout;
- enum si476x_xout_config xout;
-
- enum si476x_iqclk_config iqclk;
- enum si476x_iqfs_config iqfs;
- enum si476x_iout_config iout;
- enum si476x_qout_config qout;
-
- enum si476x_icin_config icin;
- enum si476x_icip_config icip;
- enum si476x_icon_config icon;
- enum si476x_icop_config icop;
-
- enum si476x_lrout_config lrout;
-
- enum si476x_intb_config intb;
- enum si476x_a1_config a1;
-};
-
-/**
- * enum si476x_phase_diversity_mode - possbile phase diversity modes
- * for SI4764/5/6/7 chips.
- *
- * @SI476X_PHDIV_DISABLED: Phase diversity feature is
- * disabled.
- * @SI476X_PHDIV_PRIMARY_COMBINING: Tuner works as a primary tuner
- * in combination with a
- * secondary one.
- * @SI476X_PHDIV_PRIMARY_ANTENNA: Tuner works as a primary tuner
- * using only its own antenna.
- * @SI476X_PHDIV_SECONDARY_ANTENNA: Tuner works as a primary tuner
- * usning seconary tuner's antenna.
- * @SI476X_PHDIV_SECONDARY_COMBINING: Tuner works as a secondary
- * tuner in combination with the
- * primary one.
- */
-enum si476x_phase_diversity_mode {
- SI476X_PHDIV_DISABLED = 0,
- SI476X_PHDIV_PRIMARY_COMBINING = 1,
- SI476X_PHDIV_PRIMARY_ANTENNA = 2,
- SI476X_PHDIV_SECONDARY_ANTENNA = 3,
- SI476X_PHDIV_SECONDARY_COMBINING = 5,
-};
-
-enum si476x_ibias6x {
- SI476X_IBIAS6X_OTHER = 0,
- SI476X_IBIAS6X_RCVR1_NON_4MHZ_CLK = 1,
-};
-
-enum si476x_xstart {
- SI476X_XSTART_MULTIPLE_TUNER = 0x11,
- SI476X_XSTART_NORMAL = 0x77,
-};
-
-enum si476x_freq {
- SI476X_FREQ_4_MHZ = 0,
- SI476X_FREQ_37P209375_MHZ = 1,
- SI476X_FREQ_36P4_MHZ = 2,
- SI476X_FREQ_37P8_MHZ = 3,
-};
-
-enum si476x_xmode {
- SI476X_XMODE_CRYSTAL_RCVR1 = 1,
- SI476X_XMODE_EXT_CLOCK = 2,
- SI476X_XMODE_CRYSTAL_RCVR2_3 = 3,
-};
-
-enum si476x_xbiashc {
- SI476X_XBIASHC_SINGLE_RECEIVER = 0,
- SI476X_XBIASHC_MULTIPLE_RECEIVER = 1,
-};
-
-enum si476x_xbias {
- SI476X_XBIAS_RCVR2_3 = 0,
- SI476X_XBIAS_4MHZ_RCVR1 = 3,
- SI476X_XBIAS_RCVR1 = 7,
-};
-
-enum si476x_func {
- SI476X_FUNC_BOOTLOADER = 0,
- SI476X_FUNC_FM_RECEIVER = 1,
- SI476X_FUNC_AM_RECEIVER = 2,
- SI476X_FUNC_WB_RECEIVER = 3,
-};
-
-
-/**
- * @xcload: Selects the amount of additional on-chip capacitance to
- * be connected between XTAL1 and gnd and between XTAL2 and
- * GND. One half of the capacitance value shown here is the
- * additional load capacitance presented to the xtal. The
- * minimum step size is 0.277 pF. Recommended value is 0x28
- * but it will be layout dependent. Range is 0–0x3F i.e.
- * (0–16.33 pF)
- * @ctsien: enable CTSINT(interrupt request when CTS condition
- * arises) when set
- * @intsel: when set A1 pin becomes the interrupt pin; otherwise,
- * INTB is the interrupt pin
- * @func: selects the boot function of the device. I.e.
- * SI476X_BOOTLOADER - Boot loader
- * SI476X_FM_RECEIVER - FM receiver
- * SI476X_AM_RECEIVER - AM receiver
- * SI476X_WB_RECEIVER - Weatherband receiver
- * @freq: oscillator's crystal frequency:
- * SI476X_XTAL_37P209375_MHZ - 37.209375 Mhz
- * SI476X_XTAL_36P4_MHZ - 36.4 Mhz
- * SI476X_XTAL_37P8_MHZ - 37.8 Mhz
- */
-struct si476x_power_up_args {
- enum si476x_ibias6x ibias6x;
- enum si476x_xstart xstart;
- u8 xcload;
- bool fastboot;
- enum si476x_xbiashc xbiashc;
- enum si476x_xbias xbias;
- enum si476x_func func;
- enum si476x_freq freq;
- enum si476x_xmode xmode;
-};
-
-
-enum si476x_ctrl_id {
- V4L2_CID_SI476X_RSSI_THRESHOLD = (V4L2_CID_USER_SI476X_BASE + 1),
- V4L2_CID_SI476X_SNR_THRESHOLD = (V4L2_CID_USER_SI476X_BASE + 2),
- V4L2_CID_SI476X_MAX_TUNE_ERROR = (V4L2_CID_USER_SI476X_BASE + 3),
- V4L2_CID_SI476X_HARMONICS_COUNT = (V4L2_CID_USER_SI476X_BASE + 4),
- V4L2_CID_SI476X_DIVERSITY_MODE = (V4L2_CID_USER_SI476X_BASE + 5),
- V4L2_CID_SI476X_INTERCHIP_LINK = (V4L2_CID_USER_SI476X_BASE + 6),
-};
-
-/*
- * Platform dependent definition
- */
-struct si476x_platform_data {
- int gpio_reset; /* < 0 if not used */
-
- struct si476x_power_up_args power_up_parameters;
- enum si476x_phase_diversity_mode diversity_mode;
-
- struct si476x_pinmux pinmux;
-};
-
-/**
- * struct si476x_rsq_status - structure containing received signal
- * quality
- * @multhint: Multipath Detect High.
- * true - Indicatedes that the value is below
- * FM_RSQ_MULTIPATH_HIGH_THRESHOLD
- * false - Indicatedes that the value is above
- * FM_RSQ_MULTIPATH_HIGH_THRESHOLD
- * @multlint: Multipath Detect Low.
- * true - Indicatedes that the value is below
- * FM_RSQ_MULTIPATH_LOW_THRESHOLD
- * false - Indicatedes that the value is above
- * FM_RSQ_MULTIPATH_LOW_THRESHOLD
- * @snrhint: SNR Detect High.
- * true - Indicatedes that the value is below
- * FM_RSQ_SNR_HIGH_THRESHOLD
- * false - Indicatedes that the value is above
- * FM_RSQ_SNR_HIGH_THRESHOLD
- * @snrlint: SNR Detect Low.
- * true - Indicatedes that the value is below
- * FM_RSQ_SNR_LOW_THRESHOLD
- * false - Indicatedes that the value is above
- * FM_RSQ_SNR_LOW_THRESHOLD
- * @rssihint: RSSI Detect High.
- * true - Indicatedes that the value is below
- * FM_RSQ_RSSI_HIGH_THRESHOLD
- * false - Indicatedes that the value is above
- * FM_RSQ_RSSI_HIGH_THRESHOLD
- * @rssilint: RSSI Detect Low.
- * true - Indicatedes that the value is below
- * FM_RSQ_RSSI_LOW_THRESHOLD
- * false - Indicatedes that the value is above
- * FM_RSQ_RSSI_LOW_THRESHOLD
- * @bltf: Band Limit.
- * Set if seek command hits the band limit or wrapped to
- * the original frequency.
- * @snr_ready: SNR measurement in progress.
- * @rssiready: RSSI measurement in progress.
- * @afcrl: Set if FREQOFF >= MAX_TUNE_ERROR
- * @valid: Set if the channel is valid
- * rssi < FM_VALID_RSSI_THRESHOLD
- * snr < FM_VALID_SNR_THRESHOLD
- * tune_error < FM_VALID_MAX_TUNE_ERROR
- * @readfreq: Current tuned frequency.
- * @freqoff: Signed frequency offset.
- * @rssi: Received Signal Strength Indicator(dBuV).
- * @snr: RF SNR Indicator(dB).
- * @lassi:
- * @hassi: Low/High side Adjacent(100 kHz) Channel Strength Indicator
- * @mult: Multipath indicator
- * @dev: Who knows? But values may vary.
- * @readantcap: Antenna tuning capacity value.
- * @assi: Adjacent Channel(+/- 200kHz) Strength Indicator
- * @usn: Ultrasonic Noise Inticator in -DBFS
- */
-struct si476x_rsq_status_report {
- __u8 multhint, multlint;
- __u8 snrhint, snrlint;
- __u8 rssihint, rssilint;
- __u8 bltf;
- __u8 snr_ready;
- __u8 rssiready;
- __u8 injside;
- __u8 afcrl;
- __u8 valid;
-
- __u16 readfreq;
- __s8 freqoff;
- __s8 rssi;
- __s8 snr;
- __s8 issi;
- __s8 lassi, hassi;
- __s8 mult;
- __u8 dev;
- __u16 readantcap;
- __s8 assi;
- __s8 usn;
-
- __u8 pilotdev;
- __u8 rdsdev;
- __u8 assidev;
- __u8 strongdev;
- __u16 rdspi;
-} __packed;
-
-/**
- * si476x_acf_status_report - ACF report results
- *
- * @blend_int: If set, indicates that stereo separation has crossed
- * below the blend threshold as set by FM_ACF_BLEND_THRESHOLD
- * @hblend_int: If set, indicates that HiBlend cutoff frequency is
- * lower than threshold as set by FM_ACF_HBLEND_THRESHOLD
- * @hicut_int: If set, indicates that HiCut cutoff frequency is lower
- * than the threshold set by ACF_
-
- */
-struct si476x_acf_status_report {
- __u8 blend_int;
- __u8 hblend_int;
- __u8 hicut_int;
- __u8 chbw_int;
- __u8 softmute_int;
- __u8 smute;
- __u8 smattn;
- __u8 chbw;
- __u8 hicut;
- __u8 hiblend;
- __u8 pilot;
- __u8 stblend;
-} __packed;
-
-enum si476x_fmagc {
- SI476X_FMAGC_10K_OHM = 0,
- SI476X_FMAGC_800_OHM = 1,
- SI476X_FMAGC_400_OHM = 2,
- SI476X_FMAGC_200_OHM = 4,
- SI476X_FMAGC_100_OHM = 8,
- SI476X_FMAGC_50_OHM = 16,
- SI476X_FMAGC_25_OHM = 32,
- SI476X_FMAGC_12P5_OHM = 64,
- SI476X_FMAGC_6P25_OHM = 128,
-};
-
-struct si476x_agc_status_report {
- __u8 mxhi;
- __u8 mxlo;
- __u8 lnahi;
- __u8 lnalo;
- __u8 fmagc1;
- __u8 fmagc2;
- __u8 pgagain;
- __u8 fmwblang;
-} __packed;
-
-struct si476x_rds_blockcount_report {
- __u16 expected;
- __u16 received;
- __u16 uncorrectable;
-} __packed;
-
-#endif /* SI476X_H*/
projects / ~andy / linux / commitdiff