/* 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) { printk(BIOS_ALERT, "%s Cannot find SMBus bus operations", dev_path(dev)); die(""); } 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); }