media/dvb-frontends/cx24110.h

0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002 /*
0003     cx24110 - Single Chip Satellite Channel Receiver driver module
0004
0005     Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@htp-tel.de> based on
0006     work
0007     Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de>
0008
0009
0010 */
0011
0012 #ifndef CX24110_H
0013 #define CX24110_H
0014
0015 #include <linux/dvb/frontend.h>
0016
0017 struct cx24110_config
0018 {
0019     /* the demodulator's i2c address */
0020     u8 demod_address;
0021 };
0022
0023 static inline int cx24110_pll_write(struct dvb_frontend *fe, u32 val)
0024 {
0025     u8 buf[] = {
0026         (u8)((val >> 24) & 0xff),
0027         (u8)((val >> 16) & 0xff),
0028         (u8)((val >> 8) & 0xff)
0029     };
0030
0031     if (fe->ops.write)
0032         return fe->ops.write(fe, buf, 3);
0033     return 0;
0034 }
0035
0036 #if IS_REACHABLE(CONFIG_DVB_CX24110)
0037 extern struct dvb_frontend* cx24110_attach(const struct cx24110_config* config,
0038                        struct i2c_adapter* i2c);
0039 #else
0040 static inline struct dvb_frontend* cx24110_attach(const struct cx24110_config* config,
0041                           struct i2c_adapter* i2c)
0042 {
0043     printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
0044     return NULL;
0045 }
0046 #endif // CONFIG_DVB_CX24110
0047
0048 #endif // CX24110_H