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