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1/* SPDX-License-Identifier: GPL-2.0-or-later */2#ifndef __RADIO_TEA5777_H3#define __RADIO_TEA5777_H4 5/*6 * v4l2 driver for TEA5777 Philips AM/FM radio tuner chips7 *8 * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com>9 *10 * Based on the ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips:11 *12 * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>13 * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com>14 */15 16#include <linux/videodev2.h>17#include <media/v4l2-ctrls.h>18#include <media/v4l2-dev.h>19#include <media/v4l2-device.h>20 21#define TEA575X_FMIF 1070022#define TEA575X_AMIF 45023 24struct radio_tea5777;25 26struct radio_tea5777_ops {27 /*28 * Write the 6 bytes large write register of the tea577729 *30 * val represents the 6 write registers, with byte 1 from the31 * datasheet being the most significant byte (so byte 5 of the u64),32 * and byte 6 from the datasheet being the least significant byte.33 *34 * returns 0 on success.35 */36 int (*write_reg)(struct radio_tea5777 *tea, u64 val);37 /*38 * Read the 3 bytes large read register of the tea577739 *40 * The read value gets returned in val, akin to write_reg, byte 1 from41 * the datasheet is stored as the most significant byte (so byte 2 of42 * the u32), and byte 3 from the datasheet gets stored as the least43 * significant byte (iow byte 0 of the u32).44 *45 * returns 0 on success.46 */47 int (*read_reg)(struct radio_tea5777 *tea, u32 *val);48};49 50struct radio_tea5777 {51 struct v4l2_device *v4l2_dev;52 struct v4l2_file_operations fops;53 struct video_device vd; /* video device */54 bool has_am; /* Device can tune to AM freqs */55 bool write_before_read; /* must write before read quirk */56 bool needs_write; /* for write before read quirk */57 u32 band; /* current band */58 u32 freq; /* current frequency */59 u32 audmode; /* last set audmode */60 u32 seek_rangelow; /* current hwseek limits */61 u32 seek_rangehigh;62 u32 read_reg;63 u64 write_reg;64 struct mutex mutex;65 const struct radio_tea5777_ops *ops;66 void *private_data;67 u8 card[32];68 u8 bus_info[32];69 struct v4l2_ctrl_handler ctrl_handler;70};71 72int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner);73void radio_tea5777_exit(struct radio_tea5777 *tea);74int radio_tea5777_set_freq(struct radio_tea5777 *tea);75 76#endif /* __RADIO_TEA5777_H */77