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
52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2011 by Amaury Pouly
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
#ifndef __PWM_IMX233_H__
|
|
#define __PWM_IMX233_H__
|
|
|
|
#include "system.h"
|
|
|
|
#define IMX233_PWM_MAX_PERIOD (1 << 16)
|
|
|
|
#define IMX233_PWM_NR_CHANNELS 5
|
|
|
|
void imx233_pwm_init(void);
|
|
void imx233_pwm_setup(int channel, int period, int cdiv, int active,
|
|
int active_state, int inactive, int inactive_state);
|
|
/* helper function to compute adequate divisor and period, given a minimum
|
|
* period resolution (for active/inactive) */
|
|
void imx233_pwm_lookup_freq(int freq, int min_period, int *period, int *cdiv);
|
|
/* simple setup with active 1, inactive 0, duty cycle in percent */
|
|
void imx233_pwm_setup_simple(int channel, int freq, int duty_cycle);
|
|
void imx233_pwm_enable(int channel, bool enable);
|
|
bool imx233_pwm_is_enabled(int channel);
|
|
|
|
struct imx233_pwm_info_t
|
|
{
|
|
bool enabled;
|
|
int cdiv;
|
|
int period;
|
|
int inactive, active;
|
|
char inactive_state, active_state; // '0', '1' or 'Z'
|
|
};
|
|
|
|
struct imx233_pwm_info_t imx233_pwm_get_info(int channel);
|
|
|
|
#endif /* __PWM_IMX233_H__ */
|