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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1f09e8a25c
cx18: Add I2C slave reset via GPIO upon initialization. One user, Michael <msd4824@yahoo.com>, has reported this allows his HVR-1600 EEPROM to be consistently recognized when using (long,) 100 msec delays. The delays in this commit are nominal (10 & 40 msec) and need testing/tuning on boards with I2C problems to find the right values. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
26 lines
998 B
C
26 lines
998 B
C
/*
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* cx18 gpio functions
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*
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* Derived from ivtv-gpio.h
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*
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* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
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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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* GNU General Public License for more details.
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*
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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void cx18_gpio_init(struct cx18 *cx);
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void cx18_reset_i2c_slaves_gpio(struct cx18 *cx);
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int cx18_reset_tuner_gpio(void *dev, int cmd, int value);
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