| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #ifndef DEVICE_SMBUS_H |
| #define DEVICE_SMBUS_H |
| |
| #include <stdint.h> |
| #include <device/device.h> |
| #include <device/i2c_bus.h> |
| |
| /* Common SMBus bus operations */ |
| struct smbus_bus_operations { |
| int (*recv_byte)(struct device *dev); |
| int (*send_byte)(struct device *dev, u8 value); |
| int (*read_byte)(struct device *dev, u8 addr); |
| int (*write_byte)(struct device *dev, u8 addr, u8 value); |
| int (*block_read)(struct device *dev, u8 cmd, u8 bytes, u8 *buffer); |
| int (*block_write)(struct device *dev, u8 cmd, u8 bytes, |
| const u8 *buffer); |
| }; |
| |
| static inline const struct smbus_bus_operations *ops_smbus_bus(struct bus *bus) |
| { |
| const struct smbus_bus_operations *bops; |
| |
| bops = 0; |
| if (bus && bus->dev && bus->dev->ops) |
| bops = bus->dev->ops->ops_smbus_bus; |
| |
| return bops; |
| } |
| |
| struct bus *get_pbus_smbus(struct device *dev); |
| |
| #if !DEVTREE_EARLY |
| static inline int smbus_recv_byte(struct device *const dev) |
| { |
| return i2c_dev_readb(dev); |
| } |
| |
| static inline int smbus_send_byte(struct device *const dev, u8 byte) |
| { |
| return i2c_dev_writeb(dev, byte); |
| } |
| |
| static inline int smbus_read_byte(struct device *const dev, u8 addr) |
| { |
| return i2c_dev_readb_at(dev, addr); |
| } |
| |
| static inline int smbus_write_byte(struct device *const dev, u8 addr, u8 val) |
| { |
| return i2c_dev_writeb_at(dev, addr, val); |
| } |
| |
| int smbus_block_read(struct device *dev, u8 cmd, u8 bytes, u8 *buffer); |
| int smbus_block_write(struct device *dev, u8 cmd, u8 bytes, const u8 *buffer); |
| #endif |
| |
| #endif /* DEVICE_SMBUS_H */ |
