/* SPDX-License-Identifier: GPL-2.0-only */ #define __SIMPLE_DEVICE__ #include <soc/iomap.h> #include <soc/pci_devs.h> #include <device/pci_def.h> #include <device/pci_type.h> #include <device/pci_ops.h> #include <device/smbus_host.h> #include <soc/smbus.h> int smbus_i2c_block_write(u8 addr, u8 bytes, u8 *buf) { const pci_devfn_t dev = PCI_DEV(0, SMBUS_DEV, SMBUS_FUNC); u32 smbase; u32 smb_ctrl_reg; int status; /* SMBus I/O BAR */ smbase = pci_read_config32(dev, PCI_BASE_ADDRESS_4) & 0xFFFFFFFE; /* Enable I2C_EN bit in HOSTC register */ smb_ctrl_reg = pci_read_config32(dev, HOSTC); pci_write_config32(dev, HOSTC, smb_ctrl_reg | HOSTC_I2C_EN); status = do_i2c_block_write(smbase, addr, bytes, buf); /* Restore I2C_EN bit */ pci_write_config32(dev, HOSTC, smb_ctrl_reg); return status; }