71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
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/*
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tuner-i2c.h - i2c interface for different tuners
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Copyright (C) 2007 Michael Krufky (mkrufky@linuxtv.org)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __TUNER_I2C_H__
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#define __TUNER_I2C_H__
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#include <linux/i2c.h>
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struct tuner_i2c_props {
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u8 addr;
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struct i2c_adapter *adap;
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};
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static inline int tuner_i2c_xfer_send(struct tuner_i2c_props *props, char *buf, int len)
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{
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struct i2c_msg msg = { .addr = props->addr, .flags = 0,
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.buf = buf, .len = len };
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int ret = i2c_transfer(props->adap, &msg, 1);
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return (ret == 1) ? len : ret;
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}
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static inline int tuner_i2c_xfer_recv(struct tuner_i2c_props *props, char *buf, int len)
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{
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struct i2c_msg msg = { .addr = props->addr, .flags = I2C_M_RD,
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.buf = buf, .len = len };
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int ret = i2c_transfer(props->adap, &msg, 1);
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return (ret == 1) ? len : ret;
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}
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#ifndef __TUNER_DRIVER_H__
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#define tuner_warn(fmt, arg...) do {\
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printk(KERN_WARNING PREFIX "%d-%04x: " fmt, \
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i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr , ##arg); } while (0)
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#define tuner_info(fmt, arg...) do {\
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printk(KERN_INFO PREFIX "%d-%04x: " fmt, \
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i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr , ##arg); } while (0)
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#define tuner_dbg(fmt, arg...) do {\
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if ((debug)) \
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printk(KERN_DEBUG PREFIX "%d-%04x: " fmt, \
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i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr , ##arg); } while (0)
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#endif /* __TUNER_DRIVER_H__ */
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#endif /* __TUNER_I2C_H__ */
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-basic-offset: 8
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* End:
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*/
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