1 #ifndef __RADIO_TEA5777_H 2 #define __RADIO_TEA5777_H 3 4 /* 5 * v4l2 driver for TEA5777 Philips AM/FM radio tuner chips 6 * 7 * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> 8 * 9 * Based on the ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips: 10 * 11 * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz> 12 * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2 of the License, or 17 * (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 */ 25 26 #include <linux/videodev2.h> 27 #include <media/v4l2-ctrls.h> 28 #include <media/v4l2-dev.h> 29 #include <media/v4l2-device.h> 30 31 #define TEA575X_FMIF 10700 32 #define TEA575X_AMIF 450 33 34 struct radio_tea5777; 35 36 struct radio_tea5777_ops { 37 /* 38 * Write the 6 bytes large write register of the tea5777 39 * 40 * val represents the 6 write registers, with byte 1 from the 41 * datasheet being the most significant byte (so byte 5 of the u64), 42 * and byte 6 from the datasheet being the least significant byte. 43 * 44 * returns 0 on success. 45 */ 46 int (*write_reg)(struct radio_tea5777 *tea, u64 val); 47 /* 48 * Read the 3 bytes large read register of the tea5777 49 * 50 * The read value gets returned in val, akin to write_reg, byte 1 from 51 * the datasheet is stored as the most significant byte (so byte 2 of 52 * the u32), and byte 3 from the datasheet gets stored as the least 53 * significant byte (iow byte 0 of the u32). 54 * 55 * returns 0 on success. 56 */ 57 int (*read_reg)(struct radio_tea5777 *tea, u32 *val); 58 }; 59 60 struct radio_tea5777 { 61 struct v4l2_device *v4l2_dev; 62 struct v4l2_file_operations fops; 63 struct video_device vd; /* video device */ 64 bool has_am; /* Device can tune to AM freqs */ 65 bool write_before_read; /* must write before read quirk */ 66 bool needs_write; /* for write before read quirk */ 67 u32 band; /* current band */ 68 u32 freq; /* current frequency */ 69 u32 audmode; /* last set audmode */ 70 u32 seek_rangelow; /* current hwseek limits */ 71 u32 seek_rangehigh; 72 u32 read_reg; 73 u64 write_reg; 74 struct mutex mutex; 75 const struct radio_tea5777_ops *ops; 76 void *private_data; 77 u8 card[32]; 78 u8 bus_info[32]; 79 struct v4l2_ctrl_handler ctrl_handler; 80 }; 81 82 int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner); 83 void radio_tea5777_exit(struct radio_tea5777 *tea); 84 int radio_tea5777_set_freq(struct radio_tea5777 *tea); 85 86 #endif /* __RADIO_TEA5777_H */ 87