134 lines
4.4 KiB
C
134 lines
4.4 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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#ifndef __PINCTRL_IMX233_H__
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#define __PINCTRL_IMX233_H__
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#include "config.h"
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#include "system.h"
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#include "regs/regs-pinctrl.h"
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// set to debug pinctrl use
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#define IMX233_PINCTRL_DEBUG
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#define PINCTRL_FUNCTION_MAIN 0
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#define PINCTRL_FUNCTION_ALT1 1
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#define PINCTRL_FUNCTION_ALT2 2
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#define PINCTRL_FUNCTION_GPIO 3
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#define PINCTRL_DRIVE_4mA 0
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#define PINCTRL_DRIVE_8mA 1
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#define PINCTRL_DRIVE_12mA 2
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#define PINCTRL_DRIVE_16mA 3 /* not available on all pins */
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#ifdef IMX233_PINCTRL_DEBUG
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void imx233_pinctrl_acquire_pin(unsigned bank, unsigned pin, const char *name);
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void imx233_pinctrl_acquire_pin_mask(unsigned bank, uint32_t mask, const char *name);
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void imx233_pinctrl_release_pin(unsigned bank, unsigned pin, const char *name);
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void imx233_pinctrl_release_pin_mask(unsigned bank, uint32_t mask, const char *name);
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const char *imx233_pinctrl_get_pin_use(unsigned bank, unsigned pin);
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#else
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#define imx233_pinctrl_acquire_pin(...)
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#define imx233_pinctrl_acquire_pin_mask(...)
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#define imx233_pinctrl_release_pin(...)
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#define imx233_pinctrl_release_pin_mask(...)
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#define imx233_pinctrl_get_pin_use(...) NULL
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#endif
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typedef void (*pin_irq_cb_t)(int bank, int pin);
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static inline void imx233_pinctrl_init(void)
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{
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HW_PINCTRL_CTRL_CLR = BM_OR2(PINCTRL_CTRL, CLKGATE, SFTRST);
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}
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static inline void imx233_set_pin_drive_strength(unsigned bank, unsigned pin, unsigned strength)
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{
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HW_PINCTRL_DRIVEn_CLR(4 * bank + pin / 8) = 3 << (4 * (pin % 8));
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HW_PINCTRL_DRIVEn_SET(4 * bank + pin / 8) = strength << (4 * (pin % 8));
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}
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static inline void imx233_enable_gpio_output(unsigned bank, unsigned pin, bool enable)
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{
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if(enable)
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HW_PINCTRL_DOEn_SET(bank) = 1 << pin;
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else
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HW_PINCTRL_DOEn_CLR(bank) = 1 << pin;
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}
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static inline void imx233_enable_gpio_output_mask(unsigned bank, uint32_t pin_mask, bool enable)
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{
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if(enable)
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HW_PINCTRL_DOEn_SET(bank) = pin_mask;
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else
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HW_PINCTRL_DOEn_CLR(bank) = pin_mask;
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}
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static inline void imx233_set_gpio_output(unsigned bank, unsigned pin, bool value)
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{
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if(value)
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HW_PINCTRL_DOUTn_SET(bank) = 1 << pin;
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else
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HW_PINCTRL_DOUTn_CLR(bank) = 1 << pin;
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}
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static inline void imx233_set_gpio_output_mask(unsigned bank, uint32_t pin_mask, bool value)
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{
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if(value)
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HW_PINCTRL_DOUTn_SET(bank) = pin_mask;
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else
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HW_PINCTRL_DOUTn_CLR(bank) = pin_mask;
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}
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static inline uint32_t imx233_get_gpio_input_mask(unsigned bank, uint32_t pin_mask)
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{
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return HW_PINCTRL_DINn(bank) & pin_mask;
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}
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static inline void imx233_set_pin_function(unsigned bank, unsigned pin, unsigned function)
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{
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HW_PINCTRL_MUXSELn_CLR(2 * bank + pin / 16) = 3 << (2 * (pin % 16));
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HW_PINCTRL_MUXSELn_SET(2 * bank + pin / 16) = function << (2 * (pin % 16));
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}
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static inline void imx233_enable_pin_pullup(unsigned bank, unsigned pin, bool enable)
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{
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if(enable)
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HW_PINCTRL_PULLn_SET(bank) = 1 << pin;
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else
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HW_PINCTRL_PULLn_CLR(bank) = 1 << pin;
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}
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static inline void imx233_enable_pin_pullup_mask(unsigned bank, uint32_t pin_msk, bool enable)
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{
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if(enable)
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HW_PINCTRL_PULLn_SET(bank) = pin_msk;
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else
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HW_PINCTRL_PULLn_CLR(bank) = pin_msk;
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}
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/** On irq, the pin irq interrupt is disable and then cb is called;
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* the setup_pin_irq function needs to be called again to enable it again */
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void imx233_setup_pin_irq(int bank, int pin, bool enable_int,
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bool level, bool polarity, pin_irq_cb_t cb);
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#endif /* __PINCTRL_IMX233_H__ */
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