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@@ -1,1599 +0,0 @@
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-/*
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- * drivers/media/radio/radio-si476x.c -- V4L2 driver for SI476X chips
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- *
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- * Copyright (C) 2012 Innovative Converged Devices(ICD)
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- * Copyright (C) 2013 Andrey Smirnov
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- *
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- * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; version 2 of the License.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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- * General Public License for more details.
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- *
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- */
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-
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-#include <linux/module.h>
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-#include <linux/delay.h>
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-#include <linux/interrupt.h>
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-#include <linux/slab.h>
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-#include <linux/atomic.h>
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-#include <linux/videodev2.h>
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-#include <linux/mutex.h>
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-#include <linux/debugfs.h>
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-#include <media/v4l2-common.h>
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-#include <media/v4l2-ioctl.h>
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-#include <media/v4l2-ctrls.h>
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-#include <media/v4l2-event.h>
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-#include <media/v4l2-device.h>
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-
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-#include <media/si476x.h>
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-#include <linux/mfd/si476x-core.h>
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-
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-#define FM_FREQ_RANGE_LOW 64000000
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-#define FM_FREQ_RANGE_HIGH 108000000
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-
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-#define AM_FREQ_RANGE_LOW 520000
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-#define AM_FREQ_RANGE_HIGH 30000000
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-
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-#define PWRLINEFLTR (1 << 8)
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-
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-#define FREQ_MUL (10000000 / 625)
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-
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-#define SI476X_PHDIV_STATUS_LINK_LOCKED(status) (0b10000000 & (status))
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-
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-#define DRIVER_NAME "si476x-radio"
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-#define DRIVER_CARD "SI476x AM/FM Receiver"
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-
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-enum si476x_freq_bands {
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- SI476X_BAND_FM,
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- SI476X_BAND_AM,
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-};
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-
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-static const struct v4l2_frequency_band si476x_bands[] = {
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- [SI476X_BAND_FM] = {
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- .type = V4L2_TUNER_RADIO,
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- .index = SI476X_BAND_FM,
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- .capability = V4L2_TUNER_CAP_LOW
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- | V4L2_TUNER_CAP_STEREO
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- | V4L2_TUNER_CAP_RDS
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- | V4L2_TUNER_CAP_RDS_BLOCK_IO
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- | V4L2_TUNER_CAP_FREQ_BANDS,
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- .rangelow = 64 * FREQ_MUL,
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- .rangehigh = 108 * FREQ_MUL,
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- .modulation = V4L2_BAND_MODULATION_FM,
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- },
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- [SI476X_BAND_AM] = {
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- .type = V4L2_TUNER_RADIO,
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- .index = SI476X_BAND_AM,
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- .capability = V4L2_TUNER_CAP_LOW
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- | V4L2_TUNER_CAP_FREQ_BANDS,
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- .rangelow = 0.52 * FREQ_MUL,
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- .rangehigh = 30 * FREQ_MUL,
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- .modulation = V4L2_BAND_MODULATION_AM,
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- },
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-};
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-
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-static inline bool si476x_radio_freq_is_inside_of_the_band(u32 freq, int band)
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-{
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- return freq >= si476x_bands[band].rangelow &&
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- freq <= si476x_bands[band].rangehigh;
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-}
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-
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-static inline bool si476x_radio_range_is_inside_of_the_band(u32 low, u32 high,
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- int band)
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-{
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- return low >= si476x_bands[band].rangelow &&
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- high <= si476x_bands[band].rangehigh;
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-}
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-
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-static int si476x_radio_s_ctrl(struct v4l2_ctrl *ctrl);
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-static int si476x_radio_g_volatile_ctrl(struct v4l2_ctrl *ctrl);
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-
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-enum phase_diversity_modes_idx {
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- SI476X_IDX_PHDIV_DISABLED,
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- SI476X_IDX_PHDIV_PRIMARY_COMBINING,
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- SI476X_IDX_PHDIV_PRIMARY_ANTENNA,
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- SI476X_IDX_PHDIV_SECONDARY_ANTENNA,
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- SI476X_IDX_PHDIV_SECONDARY_COMBINING,
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-};
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-
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-static const char * const phase_diversity_modes[] = {
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- [SI476X_IDX_PHDIV_DISABLED] = "Disabled",
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- [SI476X_IDX_PHDIV_PRIMARY_COMBINING] = "Primary with Secondary",
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- [SI476X_IDX_PHDIV_PRIMARY_ANTENNA] = "Primary Antenna",
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- [SI476X_IDX_PHDIV_SECONDARY_ANTENNA] = "Secondary Antenna",
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- [SI476X_IDX_PHDIV_SECONDARY_COMBINING] = "Secondary with Primary",
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-};
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-
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-static inline enum phase_diversity_modes_idx
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-si476x_phase_diversity_mode_to_idx(enum si476x_phase_diversity_mode mode)
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-{
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- switch (mode) {
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- default: /* FALLTHROUGH */
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- case SI476X_PHDIV_DISABLED:
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- return SI476X_IDX_PHDIV_DISABLED;
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- case SI476X_PHDIV_PRIMARY_COMBINING:
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- return SI476X_IDX_PHDIV_PRIMARY_COMBINING;
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- case SI476X_PHDIV_PRIMARY_ANTENNA:
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- return SI476X_IDX_PHDIV_PRIMARY_ANTENNA;
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- case SI476X_PHDIV_SECONDARY_ANTENNA:
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- return SI476X_IDX_PHDIV_SECONDARY_ANTENNA;
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- case SI476X_PHDIV_SECONDARY_COMBINING:
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- return SI476X_IDX_PHDIV_SECONDARY_COMBINING;
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- }
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-}
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-
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-static inline enum si476x_phase_diversity_mode
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-si476x_phase_diversity_idx_to_mode(enum phase_diversity_modes_idx idx)
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-{
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- static const int idx_to_value[] = {
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- [SI476X_IDX_PHDIV_DISABLED] = SI476X_PHDIV_DISABLED,
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- [SI476X_IDX_PHDIV_PRIMARY_COMBINING] = SI476X_PHDIV_PRIMARY_COMBINING,
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- [SI476X_IDX_PHDIV_PRIMARY_ANTENNA] = SI476X_PHDIV_PRIMARY_ANTENNA,
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- [SI476X_IDX_PHDIV_SECONDARY_ANTENNA] = SI476X_PHDIV_SECONDARY_ANTENNA,
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- [SI476X_IDX_PHDIV_SECONDARY_COMBINING] = SI476X_PHDIV_SECONDARY_COMBINING,
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- };
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-
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- return idx_to_value[idx];
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-}
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-
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-static const struct v4l2_ctrl_ops si476x_ctrl_ops = {
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- .g_volatile_ctrl = si476x_radio_g_volatile_ctrl,
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- .s_ctrl = si476x_radio_s_ctrl,
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-};
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-
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-
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-enum si476x_ctrl_idx {
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- SI476X_IDX_RSSI_THRESHOLD,
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- SI476X_IDX_SNR_THRESHOLD,
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- SI476X_IDX_MAX_TUNE_ERROR,
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- SI476X_IDX_HARMONICS_COUNT,
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- SI476X_IDX_DIVERSITY_MODE,
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- SI476X_IDX_INTERCHIP_LINK,
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-};
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-static struct v4l2_ctrl_config si476x_ctrls[] = {
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-
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- /**
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- * SI476X during its station seeking(or tuning) process uses several
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- * parameters to detrmine if "the station" is valid:
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- *
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- * - Signal's SNR(in dBuV) must be lower than
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- * #V4L2_CID_SI476X_SNR_THRESHOLD
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- * - Signal's RSSI(in dBuV) must be greater than
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- * #V4L2_CID_SI476X_RSSI_THRESHOLD
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- * - Signal's frequency deviation(in units of 2ppm) must not be
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- * more than #V4L2_CID_SI476X_MAX_TUNE_ERROR
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- */
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- [SI476X_IDX_RSSI_THRESHOLD] = {
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- .ops = &si476x_ctrl_ops,
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- .id = V4L2_CID_SI476X_RSSI_THRESHOLD,
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- .name = "Valid RSSI Threshold",
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- .type = V4L2_CTRL_TYPE_INTEGER,
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- .min = -128,
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- .max = 127,
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- .step = 1,
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- },
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- [SI476X_IDX_SNR_THRESHOLD] = {
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- .ops = &si476x_ctrl_ops,
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- .id = V4L2_CID_SI476X_SNR_THRESHOLD,
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- .type = V4L2_CTRL_TYPE_INTEGER,
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- .name = "Valid SNR Threshold",
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- .min = -128,
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- .max = 127,
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- .step = 1,
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- },
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- [SI476X_IDX_MAX_TUNE_ERROR] = {
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- .ops = &si476x_ctrl_ops,
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- .id = V4L2_CID_SI476X_MAX_TUNE_ERROR,
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- .type = V4L2_CTRL_TYPE_INTEGER,
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- .name = "Max Tune Errors",
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- .min = 0,
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- .max = 126 * 2,
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- .step = 2,
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- },
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-
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- /**
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- * #V4L2_CID_SI476X_HARMONICS_COUNT -- number of harmonics
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- * built-in power-line noise supression filter is to reject
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- * during AM-mode operation.
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- */
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- [SI476X_IDX_HARMONICS_COUNT] = {
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- .ops = &si476x_ctrl_ops,
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- .id = V4L2_CID_SI476X_HARMONICS_COUNT,
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- .type = V4L2_CTRL_TYPE_INTEGER,
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-
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- .name = "Count of Harmonics to Reject",
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- .min = 0,
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- .max = 20,
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- .step = 1,
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- },
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-
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- /**
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- * #V4L2_CID_SI476X_DIVERSITY_MODE -- configuration which
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- * two tuners working in diversity mode are to work in.
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- *
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- * - #SI476X_IDX_PHDIV_DISABLED diversity mode disabled
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- * - #SI476X_IDX_PHDIV_PRIMARY_COMBINING diversity mode is
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- * on, primary tuner's antenna is the main one.
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- * - #SI476X_IDX_PHDIV_PRIMARY_ANTENNA diversity mode is
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- * off, primary tuner's antenna is the main one.
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- * - #SI476X_IDX_PHDIV_SECONDARY_ANTENNA diversity mode is
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- * off, secondary tuner's antenna is the main one.
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- * - #SI476X_IDX_PHDIV_SECONDARY_COMBINING diversity mode is
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- * on, secondary tuner's antenna is the main one.
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- */
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- [SI476X_IDX_DIVERSITY_MODE] = {
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- .ops = &si476x_ctrl_ops,
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- .id = V4L2_CID_SI476X_DIVERSITY_MODE,
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- .type = V4L2_CTRL_TYPE_MENU,
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- .name = "Phase Diversity Mode",
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- .qmenu = phase_diversity_modes,
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- .min = 0,
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- .max = ARRAY_SIZE(phase_diversity_modes) - 1,
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- },
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-
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- /**
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- * #V4L2_CID_SI476X_INTERCHIP_LINK -- inter-chip link in
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- * diversity mode indicator. Allows user to determine if two
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- * chips working in diversity mode have established a link
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- * between each other and if the system as a whole uses
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- * signals from both antennas to receive FM radio.
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- */
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- [SI476X_IDX_INTERCHIP_LINK] = {
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- .ops = &si476x_ctrl_ops,
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- .id = V4L2_CID_SI476X_INTERCHIP_LINK,
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- .type = V4L2_CTRL_TYPE_BOOLEAN,
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- .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_VOLATILE,
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- .name = "Inter-Chip Link",
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- .min = 0,
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- .max = 1,
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- .step = 1,
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- },
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-};
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-
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-struct si476x_radio;
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-
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-/**
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- * struct si476x_radio_ops - vtable of tuner functions
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- *
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- * This table holds pointers to functions implementing particular
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- * operations depending on the mode in which the tuner chip was
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- * configured to start in. If the function is not supported
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- * corresponding element is set to #NULL.
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- *
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- * @tune_freq: Tune chip to a specific frequency
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- * @seek_start: Star station seeking
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- * @rsq_status: Get Recieved Signal Quality(RSQ) status
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- * @rds_blckcnt: Get recived RDS blocks count
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- * @phase_diversity: Change phase diversity mode of the tuner
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- * @phase_div_status: Get phase diversity mode status
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- * @acf_status: Get the status of Automatically Controlled
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- * Features(ACF)
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- * @agc_status: Get Automatic Gain Control(AGC) status
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- */
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-struct si476x_radio_ops {
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- int (*tune_freq)(struct si476x_core *, struct si476x_tune_freq_args *);
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- int (*seek_start)(struct si476x_core *, bool, bool);
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- int (*rsq_status)(struct si476x_core *, struct si476x_rsq_status_args *,
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- struct si476x_rsq_status_report *);
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- int (*rds_blckcnt)(struct si476x_core *, bool,
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- struct si476x_rds_blockcount_report *);
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-
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- int (*phase_diversity)(struct si476x_core *,
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- enum si476x_phase_diversity_mode);
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- int (*phase_div_status)(struct si476x_core *);
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- int (*acf_status)(struct si476x_core *,
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- struct si476x_acf_status_report *);
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- int (*agc_status)(struct si476x_core *,
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- struct si476x_agc_status_report *);
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-};
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-
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-/**
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- * struct si476x_radio - radio device
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- *
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- * @core: Pointer to underlying core device
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- * @videodev: Pointer to video device created by V4L2 subsystem
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- * @ops: Vtable of functions. See struct si476x_radio_ops for details
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- * @kref: Reference counter
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- * @core_lock: An r/w semaphore to brebvent the deletion of underlying
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- * core structure is the radio device is being used
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- */
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-struct si476x_radio {
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- struct v4l2_device v4l2dev;
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- struct video_device videodev;
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- struct v4l2_ctrl_handler ctrl_handler;
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-
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- struct si476x_core *core;
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- /* This field should not be accesses unless core lock is held */
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- const struct si476x_radio_ops *ops;
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-
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- struct dentry *debugfs;
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- u32 audmode;
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-};
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-
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-static inline struct si476x_radio *
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-v4l2_dev_to_radio(struct v4l2_device *d)
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-{
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- return container_of(d, struct si476x_radio, v4l2dev);
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-}
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-
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-static inline struct si476x_radio *
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-v4l2_ctrl_handler_to_radio(struct v4l2_ctrl_handler *d)
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-{
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- return container_of(d, struct si476x_radio, ctrl_handler);
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-}
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-
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-/*
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- * si476x_vidioc_querycap - query device capabilities
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- */
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-static int si476x_radio_querycap(struct file *file, void *priv,
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- struct v4l2_capability *capability)
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-{
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- struct si476x_radio *radio = video_drvdata(file);
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-
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- strlcpy(capability->driver, radio->v4l2dev.name,
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- sizeof(capability->driver));
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- strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card));
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- snprintf(capability->bus_info, sizeof(capability->bus_info),
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- "platform:%s", radio->v4l2dev.name);
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-
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- capability->device_caps = V4L2_CAP_TUNER
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- | V4L2_CAP_RADIO
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- | V4L2_CAP_HW_FREQ_SEEK;
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-
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- si476x_core_lock(radio->core);
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- if (!si476x_core_is_a_secondary_tuner(radio->core))
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- capability->device_caps |= V4L2_CAP_RDS_CAPTURE
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- | V4L2_CAP_READWRITE;
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- si476x_core_unlock(radio->core);
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-
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- capability->capabilities = capability->device_caps
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- | 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");
|
Mauro Carvalho Chehab