| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <stdint.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/smbus.h> |
| |
| struct bus *get_pbus_smbus(struct device *dev) |
| { |
| struct bus *const pbus = i2c_link(dev); |
| if (!pbus->dev->ops->ops_smbus_bus) |
| die("%s Cannot find SMBus bus operations", dev_path(dev)); |
| return pbus; |
| } |
| |
| #define CHECK_PRESENCE(x) \ |
| if (!ops_smbus_bus(get_pbus_smbus(dev))->x) { \ |
| printk(BIOS_ERR, "%s missing " #x "\n", \ |
| dev_path(dev)); \ |
| return -1; \ |
| } |
| |
| int smbus_block_read(struct device *dev, u8 cmd, u8 bytes, u8 *buffer) |
| { |
| CHECK_PRESENCE(block_read); |
| |
| return ops_smbus_bus(get_pbus_smbus(dev))->block_read(dev, cmd, |
| bytes, buffer); |
| } |
| |
| int smbus_block_write(struct device *dev, u8 cmd, u8 bytes, const u8 *buffer) |
| { |
| CHECK_PRESENCE(block_write); |
| |
| return ops_smbus_bus(get_pbus_smbus(dev))->block_write(dev, cmd, |
| bytes, buffer); |
| } |