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Sansa Connect: Add TPS65021 (Power Management) driver.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31135 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Tomasz Moń 2011-12-04 08:24:08 +00:00
parent ad0b308265
commit de712eebbd
4 changed files with 94 additions and 0 deletions
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1
firmware/SOURCES
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@ -1118,6 +1118,7 @@ target/arm/tms320dm320/creative-zvm/usb-creativezvm.c
#ifdef SANSA_CONNECT
#ifndef SIMULATOR
drivers/tps65021.c
target/arm/mmu-arm.S
target/arm/lcd-as-memframe.S
target/arm/tms320dm320/sdmmc-dm320.c

64
firmware/drivers/tps65021.c Normal file
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@ -0,0 +1,64 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id: $
*
* Driver for TPS 65021 Power Management IC
*
* Copyright (c) 2011 Tomasz Moń
*
* 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.
*
****************************************************************************/
#include "system.h"
#include "config.h"
#if CONFIG_I2C == I2C_DM320
#include "i2c-dm320.h"
#endif
#include "logf.h"
#include "tps65021.h"
/* (7-bit) address is 0x48, the LSB is read/write flag */
#define TPS65021_ADDR (0x48 << 1)
static void tps65021_write_reg(unsigned reg, unsigned value)
{
unsigned char data[2];
data[0] = reg;
data[1] = value;
#if CONFIG_I2C == I2C_DM320
if (i2c_write(TPS65021_ADDR, data, 2) != 0)
#else
#warning Implement tps65021_write_reg()
#endif
{
logf("TPS65021 error reg=0x%x", reg);
return;
}
}
void tps65021_init(void)
{
#ifdef SANSA_CONNECT
/* PWM mode */
tps65021_write_reg(0x04, 0xB2);
/* Set core voltage to 1.5V */
tps65021_write_reg(0x06, 0x1C);
/* Set LCM (LDO1) to 2.85V, Set CODEC and USB (LDO2) to 1.8V */
tps65021_write_reg(0x08, 0x36);
#endif
}

27
firmware/export/tps65021.h Normal file
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@ -0,0 +1,27 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id: $
*
* Copyright (C) 2011 by Tomasz Moń
*
* 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 TPS65021_H
#define TPS65021_H
void tps65021_init(void);
#endif

2
firmware/target/arm/tms320dm320/sansa-connect/power-sansaconnect.c
View file

@ -28,9 +28,11 @@
#include "backlight.h"
#include "backlight-target.h"
#include "avr-sansaconnect.h"
#include "tps65021.h"
void power_init(void)
{
tps65021_init();
}
void power_off(void)