mirror of https://gitee.com/openkylin/linux.git
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/**
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* Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner
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*
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* Copyright (C) 2010 Malcolm Priestley
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*/
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#ifndef DVB_IX2505V_H
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#define DVB_IX2505V_H
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#include <linux/i2c.h>
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#include <media/dvb_frontend.h>
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/**
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* struct ix2505v_config - ix2505 attachment configuration
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*
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* @tuner_address: tuner address
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* @tuner_gain: Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB
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* @tuner_chargepump: Charge pump output +/- 0=120 1=260 2=555 3=1200(default)
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* @min_delay_ms: delay after tune
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* @tuner_write_only: disables reads
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*/
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struct ix2505v_config {
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u8 tuner_address;
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u8 tuner_gain;
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u8 tuner_chargepump;
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int min_delay_ms;
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u8 tuner_write_only;
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};
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#if IS_REACHABLE(CONFIG_DVB_IX2505V)
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/**
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* Attach a ix2505v tuner to the supplied frontend structure.
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*
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* @fe: Frontend to attach to.
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* @config: pointer to &struct ix2505v_config
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* @i2c: pointer to &struct i2c_adapter.
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*
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* return: FE pointer on success, NULL on failure.
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*/
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extern struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
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const struct ix2505v_config *config, struct i2c_adapter *i2c);
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#else
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static inline struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
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const struct ix2505v_config *config, struct i2c_adapter *i2c)
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{
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printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
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return NULL;
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}
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#endif
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#endif /* DVB_IX2505V_H */
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