// SPDX-License-Identifier: GPL-2.0+ | |
/* | |
* Copyright 2014 Freescale Semiconductor, Inc. | |
* Copyright 2020-21 NXP | |
* Copyright 2021 Microsoft Corporation | |
*/ | |
#include <common.h> | |
#include <i2c.h> | |
#include "i2c_common.h" | |
#include "i2c_mux.h" | |
/* | |
* A new Kconfig option for something that used to always be built should be | |
* “default y”. | |
*/ | |
#ifdef CONFIG_FSL_USE_PCA9547_MUX | |
int select_i2c_ch_pca9547(u8 ch, int bus) | |
{ | |
int ret; | |
DEVICE_HANDLE_T dev; | |
/* Open device handle */ | |
ret = fsl_i2c_get_device(I2C_MUX_PCA_ADDR_PRI, bus, &dev); | |
if (ret) { | |
printf("PCA: No PCA9547 device found\n"); | |
return ret; | |
} | |
ret = I2C_WRITE(dev, 0, &ch, sizeof(ch)); | |
if (ret) { | |
printf("PCA: Unable to select channel %d (%d)\n", (int)ch, ret); | |
return ret; | |
} | |
return 0; | |
} | |
#endif |