nuttx/boards/arm/cxd56xx/common/src/cxd56_ak09912_scu.c
Alin Jerpelea 15eddd29c8 cxd56xx improvements (#48) and various other fixes (#49)
Author: Alan Carvalho de Assis <acassis@gmail.com>

    Verify all .c and .h against nxstyle, fixed the Mixed cases

Author: Alin Jerpelea <alin.jerpelea@sony.com>

    cxd56xx improvements (#48)

    * arch: cxd56xx: Add size limitation for I2C SCU xfer

    This is a fw restriction, unroll loop because it can be transfer
    up to 16 bytes.

    * arch: cxd56xx: Fix lack of leave_critical_section

    add the missing leave_critical_section

    * arch: cxd56xx: Remove unnecessary file

    this header is duplicate and we can remove it

    * arch: cxd56xx: Cosmetic change

    remove space after function

    * arch: cxd56xx: update topreg registers

    the topreg registers are updated to match the cxd5602 HW

    * arch: cxd56xx: Add voltage setting for low battery notification

    Add voltage setting for low battery notification

    * arch: cxd56xx: Improve perfomance of SD card

    Improve a problem that the clock of SD Host Controller is lower than the
    expected value in SDR25 transfer mode.

    * arch: cxd56xx: Cosmetic changes

    cleanup to comply with coding standard

    * boards: cxd56xx: Cosmetic changes

    updates to comply with coding standard

    * boards: cxd56xx: Fix SD card cannot mount issue

    SD card cannot mount when connecting and disconnecting three times
    or more due to wrong state of parameter 'initialized'.

    This change enables to skip swtching initialized state when mount
    failed.
2020-01-07 18:29:52 -03:00

108 lines
3.3 KiB
C

/****************************************************************************
* boards/arm/cxd56xx/common/src/cxd56_ak09912_scu.c
*
* Copyright 2018 Sony Semiconductor Solutions Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of Sony Semiconductor Solutions Corporation nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <debug.h>
#include <errno.h>
#include <nuttx/board.h>
#include <nuttx/sensors/ak09912.h>
#include "cxd56_i2c.h"
#include <arch/chip/scu.h>
#ifdef CONFIG_CXD56_DECI_AK09912
# define MAG_NR_SEQS 3
#else
# define MAG_NR_SEQS 1
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
#ifdef CONFIG_SENSORS_AK09912_SCU
int board_ak09912_initialize(FAR const char *devpath, int bus)
{
int i;
int ret;
FAR struct i2c_master_s *i2c;
sninfo("Initializing AK09912...\n");
/* Initialize i2c deivce */
i2c = cxd56_i2cbus_initialize(bus);
if (!i2c)
{
snerr("ERROR: Failed to initialize i2c%d.\n", bus);
return -ENODEV;
}
ret = ak09912_init(i2c, bus);
if (ret < 0)
{
snerr("Error initialize AK09912.\n");
return ret;
}
for (i = 0; i < MAG_NR_SEQS; i++)
{
/* register deivce at I2C bus */
ret = ak09912_register(devpath, i, i2c, bus);
if (ret < 0)
{
snerr("Error registering AK09912.\n");
return ret;
}
}
return ret;
}
#endif