#include <console/console.h> #include <device/device.h> #include <device/smbus.h> #include <device/pci.h> #include <device/pci_ids.h> #include <device/pci_ops.h> #include <cpu/x86/msr.h> static void i2cmux_set_link(device_t dev, unsigned int link) { if (dev->enabled && dev->path.type == DEVICE_PATH_I2C) { if (ops_smbus_bus(get_pbus_smbus(dev))) { smbus_write_byte(dev, 0x01, 1 << link); // output value smbus_write_byte(dev, 0x03, 0); // all output } } } static void i2cmux_noop(device_t dummy) { } static struct device_operations i2cmux_operations = { .read_resources = i2cmux_noop, .set_resources = i2cmux_noop, .enable_resources = i2cmux_noop, .init = i2cmux_noop, .scan_bus = scan_static_bus, .set_link = i2cmux_set_link, }; static void enable_dev(struct device *dev) { if (dev->link_list != NULL) dev->ops = &i2cmux_operations; } struct chip_operations drivers_i2c_i2cmux_ops = { CHIP_NAME("i2cmux") .enable_dev = enable_dev, };