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usr
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src
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linux-headers-5.4.0-216
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include
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media
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drv-intf
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Filename :
tea575x.h
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/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __SOUND_TEA575X_TUNER_H #define __SOUND_TEA575X_TUNER_H /* * ALSA driver for TEA5757/5759 Philips AM/FM tuner chips * * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz> */ #include <linux/videodev2.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-dev.h> #include <media/v4l2-device.h> #define TEA575X_FMIF 10700 #define TEA575X_AMIF 450 #define TEA575X_DATA (1 << 0) #define TEA575X_CLK (1 << 1) #define TEA575X_WREN (1 << 2) #define TEA575X_MOST (1 << 3) struct snd_tea575x; struct snd_tea575x_ops { /* Drivers using snd_tea575x must either define read_ and write_val */ void (*write_val)(struct snd_tea575x *tea, u32 val); u32 (*read_val)(struct snd_tea575x *tea); /* Or define the 3 pin functions */ void (*set_pins)(struct snd_tea575x *tea, u8 pins); u8 (*get_pins)(struct snd_tea575x *tea); void (*set_direction)(struct snd_tea575x *tea, bool output); }; struct snd_tea575x { struct v4l2_device *v4l2_dev; struct v4l2_file_operations fops; struct video_device vd; /* video device */ int radio_nr; /* radio_nr */ bool tea5759; /* 5759 chip is present */ bool has_am; /* Device can tune to AM freqs */ bool cannot_read_data; /* Device cannot read the data pin */ bool cannot_mute; /* Device cannot mute */ bool mute; /* Device is muted? */ bool stereo; /* receiving stereo */ bool tuned; /* tuned to a station */ unsigned int val; /* hw value */ u32 band; /* 0: FM, 1: FM-Japan, 2: AM */ u32 freq; /* frequency */ struct mutex mutex; const struct snd_tea575x_ops *ops; void *private_data; u8 card[32]; u8 bus_info[32]; struct v4l2_ctrl_handler ctrl_handler; int (*ext_init)(struct snd_tea575x *tea); }; int snd_tea575x_enum_freq_bands(struct snd_tea575x *tea, struct v4l2_frequency_band *band); int snd_tea575x_g_tuner(struct snd_tea575x *tea, struct v4l2_tuner *v); int snd_tea575x_s_hw_freq_seek(struct file *file, struct snd_tea575x *tea, const struct v4l2_hw_freq_seek *a); int snd_tea575x_hw_init(struct snd_tea575x *tea); int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner); void snd_tea575x_exit(struct snd_tea575x *tea); void snd_tea575x_set_freq(struct snd_tea575x *tea); #endif /* __SOUND_TEA575X_TUNER_H */