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433c486497
Add configuration parameter to split long i2c writes as some I2C adapters cannot write 10 bytes used as a one go. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/*
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* Driver for Microtune MT2060 "Single chip dual conversion broadband tuner"
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*
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* Copyright (c) 2006 Olivier DANET <odanet@caramail.com>
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*
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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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*
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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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*
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* GNU General Public License for more details.
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*/
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#ifndef MT2060_H
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#define MT2060_H
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struct dvb_frontend;
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struct i2c_adapter;
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/*
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* I2C address
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* 0x60, ...
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*/
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/**
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* struct mt2060_platform_data - Platform data for the mt2060 driver
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* @clock_out: Clock output setting. 0 = off, 1 = CLK/4, 2 = CLK/2, 3 = CLK/1.
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* @if1: First IF used [MHz]. 0 defaults to 1220.
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* @i2c_write_max: Maximum number of bytes I2C adapter can write at once.
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* 0 defaults to maximum.
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* @dvb_frontend: DVB frontend.
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*/
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struct mt2060_platform_data {
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u8 clock_out;
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u16 if1;
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unsigned int i2c_write_max:5;
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struct dvb_frontend *dvb_frontend;
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};
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/* configuration struct for mt2060_attach() */
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struct mt2060_config {
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u8 i2c_address;
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u8 clock_out; /* 0 = off, 1 = CLK/4, 2 = CLK/2, 3 = CLK/1 */
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};
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#if IS_REACHABLE(CONFIG_MEDIA_TUNER_MT2060)
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extern struct dvb_frontend * mt2060_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2060_config *cfg, u16 if1);
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#else
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static inline struct dvb_frontend * mt2060_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2060_config *cfg, u16 if1)
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{
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printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
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return NULL;
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}
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#endif // CONFIG_MEDIA_TUNER_MT2060
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#endif
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