| // 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 |
