1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef SI21XX_H
3 #define SI21XX_H
4
5 #include <linux/dvb/frontend.h>
6 #include <media/dvb_frontend.h>
7
8 struct si21xx_config {
9 /* the demodulator's i2c address */
10 u8 demod_address;
11
12 /* minimum delay before retuning */
13 int min_delay_ms;
14 };
15
16 #if IS_REACHABLE(CONFIG_DVB_SI21XX)
17 extern struct dvb_frontend *si21xx_attach(const struct si21xx_config *config,
18 struct i2c_adapter *i2c);
19 #else
si21xx_attach(const struct si21xx_config * config,struct i2c_adapter * i2c)20 static inline struct dvb_frontend *si21xx_attach(
21 const struct si21xx_config *config, struct i2c_adapter *i2c)
22 {
23 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
24 return NULL;
25 }
26 #endif
27
si21xx_writeregister(struct dvb_frontend * fe,u8 reg,u8 val)28 static inline int si21xx_writeregister(struct dvb_frontend *fe, u8 reg, u8 val)
29 {
30 int r = 0;
31 u8 buf[] = {reg, val};
32 if (fe->ops.write)
33 r = fe->ops.write(fe, buf, 2);
34 return r;
35 }
36
37 #endif
38