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 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 27 * 28 */ 29 30 #include <linux/videodev2.h> 31 #include <media/v4l2-ctrls.h> 32 #include <media/v4l2-dev.h> 33 #include <media/v4l2-device.h> 34 35 #define TEA575X_FMIF 10700 36 #define TEA575X_AMIF 450 37 38 struct radio_tea5777; 39 40 struct radio_tea5777_ops { 41 /* 42 * Write the 6 bytes large write register of the tea5777 43 * 44 * val represents the 6 write registers, with byte 1 from the 45 * datasheet being the most significant byte (so byte 5 of the u64), 46 * and byte 6 from the datasheet being the least significant byte. 47 * 48 * returns 0 on success. 49 */ 50 int (*write_reg)(struct radio_tea5777 *tea, u64 val); 51 /* 52 * Read the 3 bytes large read register of the tea5777 53 * 54 * The read value gets returned in val, akin to write_reg, byte 1 from 55 * the datasheet is stored as the most significant byte (so byte 2 of 56 * the u32), and byte 3 from the datasheet gets stored as the least 57 * significant byte (iow byte 0 of the u32). 58 * 59 * returns 0 on success. 60 */ 61 int (*read_reg)(struct radio_tea5777 *tea, u32 *val); 62 }; 63 64 struct radio_tea5777 { 65 struct v4l2_device *v4l2_dev; 66 struct v4l2_file_operations fops; 67 struct video_device vd; /* video device */ 68 bool has_am; /* Device can tune to AM freqs */ 69 bool write_before_read; /* must write before read quirk */ 70 bool needs_write; /* for write before read quirk */ 71 u32 band; /* current band */ 72 u32 freq; /* current frequency */ 73 u32 audmode; /* last set audmode */ 74 u32 seek_rangelow; /* current hwseek limits */ 75 u32 seek_rangehigh; 76 u32 read_reg; 77 u64 write_reg; 78 struct mutex mutex; 79 const struct radio_tea5777_ops *ops; 80 void *private_data; 81 u8 card[32]; 82 u8 bus_info[32]; 83 struct v4l2_ctrl_handler ctrl_handler; 84 }; 85 86 int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner); 87 void radio_tea5777_exit(struct radio_tea5777 *tea); 88 int radio_tea5777_set_freq(struct radio_tea5777 *tea); 89 90 #endif /* __RADIO_TEA5777_H */ 91