| Hans de Goede | 4faba76 | 2012-06-23 04:39:58 -0300 | [diff] [blame^] | 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 freq; /* current frequency */ |
| 72 | u32 seek_rangelow; /* current hwseek limits */ |
| 73 | u32 seek_rangehigh; |
| 74 | u32 read_reg; |
| 75 | u64 write_reg; |
| 76 | struct mutex mutex; |
| 77 | struct radio_tea5777_ops *ops; |
| 78 | void *private_data; |
| 79 | u8 card[32]; |
| 80 | u8 bus_info[32]; |
| 81 | struct v4l2_ctrl_handler ctrl_handler; |
| 82 | }; |
| 83 | |
| 84 | int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner); |
| 85 | void radio_tea5777_exit(struct radio_tea5777 *tea); |
| 86 | |
| 87 | #endif /* __RADIO_TEA5777_H */ |