// SPDX-License-Identifier: GPL-2.0-only /* * 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 <[email protected]> */ #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/drv-intf/si476x.h> #include <linux/mfd/si476x-core.h> #define FM_FREQ_RANGE_LOW … #define FM_FREQ_RANGE_HIGH … #define AM_FREQ_RANGE_LOW … #define AM_FREQ_RANGE_HIGH … #define PWRLINEFLTR … #define FREQ_MUL … #define SI476X_PHDIV_STATUS_LINK_LOCKED(status) … #define DRIVER_NAME … #define DRIVER_CARD … enum si476x_freq_bands { … }; static const struct v4l2_frequency_band si476x_bands[] = …; static inline bool si476x_radio_freq_is_inside_of_the_band(u32 freq, int band) { … } static inline bool si476x_radio_range_is_inside_of_the_band(u32 low, u32 high, int band) { … } 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 { … }; static const char * const phase_diversity_modes[] = …; static inline enum phase_diversity_modes_idx si476x_phase_diversity_mode_to_idx(enum si476x_phase_diversity_mode mode) { … } static inline enum si476x_phase_diversity_mode si476x_phase_diversity_idx_to_mode(enum phase_diversity_modes_idx idx) { … } static const struct v4l2_ctrl_ops si476x_ctrl_ops = …; enum si476x_ctrl_idx { … }; static struct v4l2_ctrl_config si476x_ctrls[] = …; 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. 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 Received Signal Quality(RSQ) status * @rds_blckcnt: Get received 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 { … }; /** * struct si476x_radio - radio device * * @v4l2dev: Pointer to V4L2 device created by V4L2 subsystem * @videodev: Pointer to video device created by V4L2 subsystem * @ctrl_handler: V4L2 controls handler * @core: Pointer to underlying core device * @ops: Vtable of functions. See struct si476x_radio_ops for details * @debugfs: pointer to &strucd dentry for debugfs * @audmode: audio mode, as defined for the rxsubchans field * at videodev2.h * * core structure is the radio device is being used */ struct si476x_radio { … }; static inline struct si476x_radio * v4l2_ctrl_handler_to_radio(struct v4l2_ctrl_handler *d) { … } /* * si476x_vidioc_querycap - query device capabilities */ static int si476x_radio_querycap(struct file *file, void *priv, struct v4l2_capability *capability) { … } static int si476x_radio_enum_freq_bands(struct file *file, void *priv, struct v4l2_frequency_band *band) { … } static int si476x_radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *tuner) { … } static int si476x_radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *tuner) { … } static int si476x_radio_init_vtable(struct si476x_radio *radio, enum si476x_func func) { … } static int si476x_radio_pretune(struct si476x_radio *radio, enum si476x_func func) { … } static int si476x_radio_do_post_powerup_init(struct si476x_radio *radio, enum si476x_func func) { … } static int si476x_radio_change_func(struct si476x_radio *radio, enum si476x_func func) { … } static int si476x_radio_g_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { … } static int si476x_radio_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *f) { … } static int si476x_radio_s_hw_freq_seek(struct file *file, void *priv, const struct v4l2_hw_freq_seek *seek) { … } static int si476x_radio_g_volatile_ctrl(struct v4l2_ctrl *ctrl) { … } static int si476x_radio_s_ctrl(struct v4l2_ctrl *ctrl) { … } #ifdef CONFIG_VIDEO_ADV_DEBUG static int si476x_radio_g_register(struct file *file, void *fh, struct v4l2_dbg_register *reg) { … } static int si476x_radio_s_register(struct file *file, void *fh, const struct v4l2_dbg_register *reg) { … } #endif static int si476x_radio_fops_open(struct file *file) { … } static int si476x_radio_fops_release(struct file *file) { … } static ssize_t si476x_radio_fops_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { … } static __poll_t si476x_radio_fops_poll(struct file *file, struct poll_table_struct *pts) { … } static const struct v4l2_file_operations si476x_fops = …; static const struct v4l2_ioctl_ops si4761_ioctl_ops = …; static const struct video_device si476x_viddev_template = …; static ssize_t si476x_radio_read_acf_blob(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { … } static const struct file_operations radio_acf_fops = …; static ssize_t si476x_radio_read_rds_blckcnt_blob(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { … } static const struct file_operations radio_rds_blckcnt_fops = …; static ssize_t si476x_radio_read_agc_blob(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { … } static const struct file_operations radio_agc_fops = …; static ssize_t si476x_radio_read_rsq_blob(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { … } static const struct file_operations radio_rsq_fops = …; static ssize_t si476x_radio_read_rsq_primary_blob(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { … } static const struct file_operations radio_rsq_primary_fops = …; static void si476x_radio_init_debugfs(struct si476x_radio *radio) { … } static int si476x_radio_add_new_custom(struct si476x_radio *radio, enum si476x_ctrl_idx idx) { … } static int si476x_radio_probe(struct platform_device *pdev) { … } static void si476x_radio_remove(struct platform_device *pdev) { … } MODULE_ALIAS(…) …; static struct platform_driver si476x_radio_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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