| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef SI21XX_H |
| #define SI21XX_H |
| |
| #include <linux/dvb/frontend.h> |
| #include <media/dvb_frontend.h> |
| |
| struct si21xx_config { |
| /* the demodulator's i2c address */ |
| u8 demod_address; |
| |
| /* minimum delay before retuning */ |
| int min_delay_ms; |
| }; |
| |
| #if IS_REACHABLE(CONFIG_DVB_SI21XX) |
| extern struct dvb_frontend *si21xx_attach(const struct si21xx_config *config, |
| struct i2c_adapter *i2c); |
| #else |
| static inline struct dvb_frontend *si21xx_attach( |
| const struct si21xx_config *config, struct i2c_adapter *i2c) |
| { |
| printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); |
| return NULL; |
| } |
| #endif |
| |
| static inline int si21xx_writeregister(struct dvb_frontend *fe, u8 reg, u8 val) |
| { |
| int r = 0; |
| u8 buf[] = {reg, val}; |
| if (fe->ops.write) |
| r = fe->ops.write(fe, buf, 2); |
| return r; |
| } |
| |
| #endif |