2 tuner-i2c.h - i2c interface for different tuners
4 Copyright (C) 2007 Michael Krufky (mkrufky@linuxtv.org)
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #ifndef __TUNER_I2C_H__
22 #define __TUNER_I2C_H__
24 #include <linux/i2c.h>
26 struct tuner_i2c_props {
28 struct i2c_adapter *adap;
31 static inline int tuner_i2c_xfer_send(struct tuner_i2c_props *props, char *buf, int len)
33 struct i2c_msg msg = { .addr = props->addr, .flags = 0,
34 .buf = buf, .len = len };
35 int ret = i2c_transfer(props->adap, &msg, 1);
37 return (ret == 1) ? len : ret;
40 static inline int tuner_i2c_xfer_recv(struct tuner_i2c_props *props, char *buf, int len)
42 struct i2c_msg msg = { .addr = props->addr, .flags = I2C_M_RD,
43 .buf = buf, .len = len };
44 int ret = i2c_transfer(props->adap, &msg, 1);
46 return (ret == 1) ? len : ret;
49 #ifndef __TUNER_DRIVER_H__
50 #define tuner_warn(fmt, arg...) do {\
51 printk(KERN_WARNING PREFIX "%d-%04x: " fmt, \
52 i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr , ##arg); } while (0)
53 #define tuner_info(fmt, arg...) do {\
54 printk(KERN_INFO PREFIX "%d-%04x: " fmt, \
55 i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr , ##arg); } while (0)
56 #define tuner_dbg(fmt, arg...) do {\
58 printk(KERN_DEBUG PREFIX "%d-%04x: " fmt, \
59 i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr , ##arg); } while (0)
60 #endif /* __TUNER_DRIVER_H__ */
62 #endif /* __TUNER_I2C_H__ */
65 * Overrides for Emacs so that we follow Linus's tabbing style.
66 * ---------------------------------------------------------------------------