| 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 |
| 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 | |
| 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 |