1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 #ifndef __RADIO_TEA5777_H 3 #define __RADIO_TEA5777_H 4 5 /* 6 * v4l2 driver for TEA5777 Philips AM/FM radio tuner chips 7 * 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 10700 22 #define TEA575X_AMIF 450 23 24 struct radio_tea5777; 25 26 struct radio_tea5777_ops { 27 /* 28 * Write the 6 bytes large write register of the tea5777 29 * 30 * val represents the 6 write registers, with byte 1 from the 31 * 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 tea5777 39 * 40 * The read value gets returned in val, akin to write_reg, byte 1 from 41 * the datasheet is stored as the most significant byte (so byte 2 of 42 * the u32), and byte 3 from the datasheet gets stored as the least 43 * 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 50 struct 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 72 int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner); 73 void radio_tea5777_exit(struct radio_tea5777 *tea); 74 int radio_tea5777_set_freq(struct radio_tea5777 *tea); 75 76 #endif /* __RADIO_TEA5777_H */ 77