| #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, |
| }; |
