eac1ca22bd
NOTE: this commit does not introduce any change, ideally even the binary should
be almost the same. I checked the disassembly by hand and there are only a few
differences here and there, mostly the compiler decides to compile very close
expressions slightly differently. I tried to run the new code on several targets
to make sure and saw no difference.
The major syntax changes of the new headers are as follows:
- BF_{WR,SET,CLR} are now superpowerful and allows to set several fileds at once:
BF_WR(reg, field1(value1), field2(value2), ...)
- BF_CS (use like BF_WR) does a write to reg_CLR and then reg_SET instead of RMW
- there is no more need for macros like BF_{WR_,SET,CLR}_V, since one can simply
BF_WR with field_V(name)
- the old BF_SETV macro has no trivial equivalent and is replaced with its
its equivalent for BF_WR(reg_SET, ...)
I also rename the register headers: "regs/regs-x.h" -> "regs/x.h" to avoid the
redundant "regs".
Final note: the registers were generated using the following command:
./headergen_v2 -g imx -o ../../firmware/target/arm/imx233/regs/ desc/regs-stmp3{600,700,780}.xml
Change-Id: I7485e8b4315a0929a8edb63e7fa1edcaa54b1edc
179 lines
5.6 KiB
C
179 lines
5.6 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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#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/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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#if IMX233_SUBTARGET >= 3700
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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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#else
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#define PINCTRL_DRIVE_4mA 0
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#define PINCTRL_DRIVE_8mA 1
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#endif
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#ifdef IMX233_PINCTRL_DEBUG
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void imx233_pinctrl_acquire(unsigned bank, unsigned pin, const char *name);
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void imx233_pinctrl_release(unsigned bank, unsigned pin, const char *name);
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const char *imx233_pinctrl_blame(unsigned bank, unsigned pin);
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#else
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#define imx233_pinctrl_acquire(...)
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#define imx233_pinctrl_release(...)
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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, intptr_t user);
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static inline void imx233_pinctrl_init(void)
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{
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BF_CLR(PINCTRL_CTRL, CLKGATE, SFTRST);
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}
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#if IMX233_SUBTARGET >= 3700
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static inline void imx233_pinctrl_set_drive(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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#else
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static inline void imx233_pinctrl_set_drive(unsigned bank, unsigned pin, unsigned strength)
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{
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HW_PINCTRL_DRIVEn_CLR(bank) = 1 << pin;
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HW_PINCTRL_DRIVEn_SET(bank) = strength << pin;
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}
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#endif
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static inline void imx233_pinctrl_enable_gpio(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_pinctrl_set_gpio(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 bool imx233_pinctrl_get_gpio(unsigned bank, unsigned pin)
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{
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return (HW_PINCTRL_DINn(bank) >> pin) & 1;
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}
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static inline void imx233_pinctrl_set_function(unsigned bank, unsigned pin, unsigned function)
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{
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#if IMX233_SUBTARGET >= 3700
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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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#else
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if(pin < 16)
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{
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HW_PINCTRL_MUXSELLn_CLR(bank) = 3 << (2 * pin);
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HW_PINCTRL_MUXSELLn_SET(bank) = function << (2 * pin);
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}
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else
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{
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pin -= 16;
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HW_PINCTRL_MUXSELHn_CLR(bank) = 3 << (2 * pin);
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HW_PINCTRL_MUXSELHn_SET(bank) = function << (2 * pin);
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}
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#endif
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}
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#if IMX233_SUBTARGET >= 3700
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static inline void imx233_pinctrl_enable_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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#else
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static inline void imx233_pinctrl_enable_pullup(unsigned bank, unsigned pin, bool enable)
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{
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(void) bank;
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(void) pin;
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(void) enable;
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}
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#endif
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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_pinctrl_setup_irq(unsigned bank, unsigned pin, bool enable_int,
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bool level, bool polarity, pin_irq_cb_t cb, intptr_t user);
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/**
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* Virtual pin interface
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*
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* This interface provides an easy way to configure standard pins for
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* devices like SSP, LCD, etc
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* The point here is that these pins can or cannot exist depending on the
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* chip and the package and the drivers don't want to mess with that.
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*
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* A virtual pin is described by a bank, a pin and the function.
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*/
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typedef unsigned vpin_t;
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#define VPIN_PACK(bank, pin, mux) \
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((vpin_t)((bank) << 5 | (pin) | PINCTRL_FUNCTION_##mux << 7))
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#define VPIN_UNPACK_BANK(vpin) (((vpin) >> 5) & 3)
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#define VPIN_UNPACK_PIN(vpin) (((vpin) >> 0) & 0x1f)
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#define VPIN_UNPACK_MUX(vpin) (((vpin) >> 7) & 3)
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static inline void imx233_pinctrl_setup_vpin(vpin_t vpin, const char *name,
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unsigned drive, bool pullup)
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{
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unsigned bank = VPIN_UNPACK_BANK(vpin), pin = VPIN_UNPACK_PIN(vpin);
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imx233_pinctrl_acquire(bank, pin, name);
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imx233_pinctrl_set_function(bank, pin, VPIN_UNPACK_MUX(vpin));
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imx233_pinctrl_set_drive(bank, pin, drive);
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imx233_pinctrl_enable_pullup(bank, pin, pullup);
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}
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#if IMX233_SUBTARGET < 3700
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#include "pins/pins-stmp3600.h"
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#elif IMX233_SUBTARGET < 3770
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#include "pins/pins-stmp3700.h"
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#elif IMX233_SUBTARGET < 3780
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#error implement this
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#else
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#include "pins/pins-imx233.h"
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#endif
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#endif /* __PINCTRL_IMX233_H__ */
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