diff options
Diffstat (limited to 'drivers/media/radio/radio-si476x.c')
| -rw-r--r-- | drivers/media/radio/radio-si476x.c | 1599 |
1 files changed, 0 insertions, 1599 deletions
diff --git a/drivers/media/radio/radio-si476x.c b/drivers/media/radio/radio-si476x.c deleted file mode 100644 index 9430c6a..0000000 --- a/drivers/media/radio/radio-si476x.c +++ /dev/null @@ -1,1599 +0,0 @@ -/* - * 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"); |