9caffa8bf7
Only enable fmradio_i2c once with _init() called from system. Move actual i2c init to system for consistency. Move tuner power pin setup to power instead of fmradio. Change-Id: Idb56bfba5803f71b5d049f174c48d2afb969a6ea
103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2011 by Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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#include "fmradio_i2c.h"
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#include "pinctrl-imx233.h"
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#include "generic_i2c.h"
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/**
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* Sansa Fuze+ fmradio uses the following pins:
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* - B0P29 as CE apparently (active high)
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* - B1P24 as SDA
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* - B1P22 as SCL
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*/
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static int fmradio_i2c_bus = -1;
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static void i2c_scl_dir(bool out)
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{
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imx233_enable_gpio_output(1, 22, out);
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}
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static void i2c_sda_dir(bool out)
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{
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imx233_enable_gpio_output(1, 24, out);
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}
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static void i2c_scl_out(bool high)
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{
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imx233_set_gpio_output(1, 22, high);
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}
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static void i2c_sda_out(bool high)
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{
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imx233_set_gpio_output(1, 24, high);
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}
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static bool i2c_scl_in(void)
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{
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return imx233_get_gpio_input_mask(1, 1 << 22);
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}
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static bool i2c_sda_in(void)
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{
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return imx233_get_gpio_input_mask(1, 1 << 24);
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}
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static void i2c_delay(int d)
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{
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udelay(d);
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}
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struct i2c_interface fmradio_i2c =
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{
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.scl_dir = i2c_scl_dir,
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.sda_dir = i2c_sda_dir,
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.scl_out = i2c_scl_out,
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.sda_out = i2c_sda_out,
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.scl_in = i2c_scl_in,
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.sda_in = i2c_sda_in,
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.delay = i2c_delay,
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.delay_hd_sta = 4,
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.delay_hd_dat = 5,
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.delay_su_dat = 1,
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.delay_su_sto = 4,
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.delay_su_sta = 5,
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.delay_thigh = 4
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};
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void fmradio_i2c_init(void)
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{
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imx233_set_pin_function(1, 24, PINCTRL_FUNCTION_GPIO);
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imx233_set_pin_function(1, 22, PINCTRL_FUNCTION_GPIO);
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fmradio_i2c_bus = i2c_add_node(&fmradio_i2c);
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}
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int fmradio_i2c_write(unsigned char address, const unsigned char* buf, int count)
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{
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return i2c_write_data(fmradio_i2c_bus, address, -1, buf, count);
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}
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int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count)
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{
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return i2c_read_data(fmradio_i2c_bus, address, -1, buf, count);
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}
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