1 #ifndef __SOUND_TEA575X_TUNER_H 2 #define __SOUND_TEA575X_TUNER_H 3 4 /* 5 * ALSA driver for TEA5757/5759 Philips AM/FM tuner chips 6 * 7 * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 * 23 */ 24 25 #include <linux/videodev2.h> 26 #include <media/v4l2-ctrls.h> 27 #include <media/v4l2-dev.h> 28 #include <media/v4l2-device.h> 29 30 #define TEA575X_FMIF 10700 31 #define TEA575X_AMIF 450 32 33 #define TEA575X_DATA (1 << 0) 34 #define TEA575X_CLK (1 << 1) 35 #define TEA575X_WREN (1 << 2) 36 #define TEA575X_MOST (1 << 3) 37 38 struct snd_tea575x; 39 40 struct snd_tea575x_ops { 41 /* Drivers using snd_tea575x must either define read_ and write_val */ 42 void (*write_val)(struct snd_tea575x *tea, u32 val); 43 u32 (*read_val)(struct snd_tea575x *tea); 44 /* Or define the 3 pin functions */ 45 void (*set_pins)(struct snd_tea575x *tea, u8 pins); 46 u8 (*get_pins)(struct snd_tea575x *tea); 47 void (*set_direction)(struct snd_tea575x *tea, bool output); 48 }; 49 50 struct snd_tea575x { 51 struct v4l2_device *v4l2_dev; 52 struct v4l2_file_operations fops; 53 struct video_device vd; /* video device */ 54 int radio_nr; /* radio_nr */ 55 bool tea5759; /* 5759 chip is present */ 56 bool has_am; /* Device can tune to AM freqs */ 57 bool cannot_read_data; /* Device cannot read the data pin */ 58 bool cannot_mute; /* Device cannot mute */ 59 bool mute; /* Device is muted? */ 60 bool stereo; /* receiving stereo */ 61 bool tuned; /* tuned to a station */ 62 unsigned int val; /* hw value */ 63 u32 band; /* 0: FM, 1: FM-Japan, 2: AM */ 64 u32 freq; /* frequency */ 65 struct mutex mutex; 66 const struct snd_tea575x_ops *ops; 67 void *private_data; 68 u8 card[32]; 69 u8 bus_info[32]; 70 struct v4l2_ctrl_handler ctrl_handler; 71 int (*ext_init)(struct snd_tea575x *tea); 72 }; 73 74 int snd_tea575x_enum_freq_bands(struct snd_tea575x *tea, 75 struct v4l2_frequency_band *band); 76 int snd_tea575x_g_tuner(struct snd_tea575x *tea, struct v4l2_tuner *v); 77 int snd_tea575x_s_hw_freq_seek(struct file *file, struct snd_tea575x *tea, 78 const struct v4l2_hw_freq_seek *a); 79 int snd_tea575x_hw_init(struct snd_tea575x *tea); 80 int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner); 81 void snd_tea575x_exit(struct snd_tea575x *tea); 82 void snd_tea575x_set_freq(struct snd_tea575x *tea); 83 84 #endif /* __SOUND_TEA575X_TUNER_H */ 85