446f352abd
Choices are limited for those: i2c is either generic software or imx233 hardware and power is either none or with a gpio. So factor ever possible combination in a single common file and use fmradio-target.h to supply the required parameters. This will remove a bunch of duplicate code. Change-Id: If12faeb2e371631cd39cc18a4c1d859812007934
162 lines
4.5 KiB
C
162 lines
4.5 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) 2013 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 "fmradio-imx233.h"
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#include "fmradio-target.h"
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#include "pinctrl-imx233.h"
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#include "i2c.h"
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#include "generic_i2c.h"
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#ifndef IMX233_FMRADIO_I2C
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#error You must define IMX233_FMRADIO_I2C in fmradio-target.h
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#endif
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#ifndef IMX233_FMRADIO_POWER
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#error You must define IMX233_FMRADIO_POWER in fmradio-target.h
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#endif
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/** Hardware I2C */
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#if IMX233_FMRADIO_I2C == FMI_HW
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void fmradio_i2c_init(void)
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{
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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(address, 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(address, buf, count);
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}
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/** Software I2C */
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#elif IMX233_FMRADIO_I2C == FMI_SW
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#if !defined(FMI_SW_SDA_BANK) || !defined(FMI_SW_SDA_PIN) || \
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!defined(FMI_SW_SCL_BANK) || !defined(FMI_SW_SCL_PIN)
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#error You must define FMI_SW_SDA_BANK, FMI_SW_SDA_PIN, FMI_SW_SCL_BANK and FMI_SW_SCL_PIN
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#endif
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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_pinctrl_enable_gpio(FMI_SW_SCL_BANK, FMI_SW_SCL_PIN, 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_pinctrl_enable_gpio(FMI_SW_SDA_BANK, FMI_SW_SDA_PIN, 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_pinctrl_set_gpio(FMI_SW_SCL_BANK, FMI_SW_SCL_PIN, 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_pinctrl_set_gpio(FMI_SW_SDA_BANK, FMI_SW_SDA_PIN, 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_pinctrl_get_gpio(FMI_SW_SCL_BANK, FMI_SW_SCL_PIN);
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}
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static bool i2c_sda_in(void)
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{
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return imx233_pinctrl_get_gpio(FMI_SW_SDA_BANK, FMI_SW_SDA_PIN);
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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_pinctrl_acquire(FMI_SW_SDA_BANK, FMI_SW_SDA_PIN, "fmradio_i2c_sda");
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imx233_pinctrl_acquire(FMI_SW_SCL_BANK, FMI_SW_SCL_BANK, "fmradio_i2c_scl");
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imx233_pinctrl_set_function(FMI_SW_SDA_BANK, FMI_SW_SDA_PIN, PINCTRL_FUNCTION_GPIO);
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imx233_pinctrl_set_function(FMI_SW_SCL_BANK, FMI_SW_SCL_BANK, 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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#else
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#error Invalid value for IMX233_FMRADIO_I2C
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#endif
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static bool tuner_enable = false;
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bool tuner_power(bool enable)
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{
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if(enable != tuner_enable)
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{
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tuner_enable = enable;
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#if IMX233_FMRADIO_POWER == FMP_GPIO
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static bool init = false;
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if(!init)
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{
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/* CE is B0P29 (active high) */
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imx233_pinctrl_acquire(FMP_GPIO_BANK, FMP_GPIO_PIN, "tuner_power");
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imx233_pinctrl_set_function(FMP_GPIO_BANK, FMP_GPIO_PIN, PINCTRL_FUNCTION_GPIO);
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imx233_pinctrl_enable_gpio(FMP_GPIO_BANK, FMP_GPIO_PIN, true);
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}
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imx233_pinctrl_set_gpio(FMP_GPIO_BANK, FMP_GPIO_PIN, enable);
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/* power up delay */
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sleep(FMP_GPIO_DELAY);
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#elif IMX233_FMRADIO_POWER == FMP_NONE
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#else
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#error Invalid value for IMX233_FMRADIO_POWER
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#endif
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}
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return tuner_enable;
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}
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bool tuner_powered(void)
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{
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return tuner_enable;
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}
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