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echoplayer: add function to enable 1V8 regulator

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This supply is shared by the USB PHY and the audio codec,
so it needs to be reference counted to allow them to be
powered up & down independently (and not just leave the
1V8 regulator enabled all the time).

Change-Id: Ib99b41c2a94b9f0c378153b33c6f91b4370ee998
This commit is contained in:
Aidan MacDonald 2026-01-09 23:59:19 +00:00
parent 80e1c2b27e
commit d15ccd771d
2 changed files with 53 additions and 0 deletions
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25
firmware/target/arm/stm32/echoplayer/power-echoplayer.c
View file

@ -19,6 +19,11 @@
*
****************************************************************************/
#include "power.h"
#include "mutex.h"
#include "gpio-stm32h7.h"
static struct mutex power_1v8_lock;
static int power_1v8_refcount;
unsigned short battery_level_disksafe = 3500;
unsigned short battery_level_shutoff = 3400;
@ -35,9 +40,29 @@ unsigned short percent_to_volt_charge[11] =
3485, 3780, 3836, 3857, 3890, 3930, 3986, 4062, 4158, 4185, 4196
};
/* API for enabling 1V8 regulator */
void echoplayer_enable_1v8_regulator(bool enable)
{
mutex_lock(&power_1v8_lock);
if (enable)
{
if (power_1v8_refcount++ == 0)
gpio_set_level(GPIO_POWER_1V8, 1);
}
else
{
if (--power_1v8_refcount == 0)
gpio_set_level(GPIO_POWER_1V8, 0);
}
mutex_unlock(&power_1v8_lock);
}
/* Power management */
void power_init(void)
{
mutex_init(&power_1v8_lock);
}
void power_off(void)

28
firmware/target/arm/stm32/echoplayer/power-echoplayer.h Normal file
View file

@ -0,0 +1,28 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2026 by Aidan MacDonald
*
* 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 __POWER_ECHOPLAYER_H__
#define __POWER_ECHOPLAYER_H__
#include <stdbool.h>
void echoplayer_enable_1v8_regulator(bool enable);
#endif /* __POWER_ECHOPLAYER_H__ */