38 строки
824 B
C
38 строки
824 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef SI21XX_H
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#define SI21XX_H
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#include <linux/dvb/frontend.h>
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#include "dvb_frontend.h"
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struct si21xx_config {
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/* the demodulator's i2c address */
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u8 demod_address;
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/* minimum delay before retuning */
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int min_delay_ms;
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};
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#if IS_REACHABLE(CONFIG_DVB_SI21XX)
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extern struct dvb_frontend *si21xx_attach(const struct si21xx_config *config,
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struct i2c_adapter *i2c);
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#else
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static inline struct dvb_frontend *si21xx_attach(
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const struct si21xx_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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static inline int si21xx_writeregister(struct dvb_frontend *fe, u8 reg, u8 val)
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{
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int r = 0;
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u8 buf[] = {reg, val};
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if (fe->ops.write)
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r = fe->ops.write(fe, buf, 2);
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return r;
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}
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#endif
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