src/drivers/i2c/lm63/lm63.c

   1 #include <console/console.h>
   2 #include <device/device.h>
   3 #include <device/smbus.h>
   4 #include <device/pci.h>
   5 #include <device/pci_ids.h>
   6 #include <device/pci_ops.h>
   7 #include <cpu/x86/msr.h>
   8 #include "chip.h"
   9
  10 static void lm63_init(device_t dev)
  11 {
  12         int result;
  13         if (dev->enabled && dev->path.type == DEVICE_PATH_I2C) {
  14                 if (ops_smbus_bus(get_pbus_smbus(dev))) {
  15                         if (dev->bus->dev->path.type == DEVICE_PATH_I2C)
  16                                 smbus_set_link(dev);    // it is under mux
  17                         result = smbus_read_byte(dev, 0x03);
  18 //                      result &= ~0x04;
  19                         result |= 0x04;
  20                         smbus_write_byte(dev, 0x03, result & 0xff);     // config lm63
  21                 }
  22         }
  23 }
  24
  25 static void lm63_noop(device_t dummy)
  26 {
  27 }
  28
  29 static struct device_operations lm63_operations = {
  30         .read_resources = lm63_noop,
  31         .set_resources = lm63_noop,
  32         .enable_resources = lm63_noop,
  33         .init = lm63_init,
  34 };
  35
  36 static void enable_dev(struct device *dev)
  37 {
  38         dev->ops = &lm63_operations;
  39 }
  40
  41 struct chip_operations drivers_i2c_lm63_ops = {
  42         CHIP_NAME("National Semiconductor LM63")
  43         .enable_dev = enable_dev,
  44 };