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
  11 static void lm63_init(device_t dev)
  12 {
  13         int result;
  14         if (dev->enabled && dev->path.type == DEVICE_PATH_I2C)
  15         {
  16                 if(ops_smbus_bus(get_pbus_smbus(dev))) {
  17                         if( dev->bus->dev->path.type == DEVICE_PATH_I2C) smbus_set_link(dev); // it is under mux
  18                         result = smbus_read_byte(dev, 0x03);
  19 //                      result &= ~0x04;
  20                         result |= 0x04;
  21                         smbus_write_byte(dev, 0x03, result & 0xff); // config lm63
  22                 }
  23
  24         }
  25
  26 }
  27 static void lm63_noop(device_t dummy)
  28 {
  29 }
  30
  31 static struct device_operations lm63_operations = {
  32         .read_resources   = lm63_noop,
  33         .set_resources    = lm63_noop,
  34         .enable_resources = lm63_noop,
  35         .init             = lm63_init,
  36 };
  37
  38 static void enable_dev(struct device *dev)
  39 {
  40         dev->ops = &lm63_operations;
  41 }
  42
  43 struct chip_operations drivers_i2c_lm63_ops = {
  44         CHIP_NAME("National Semiconductor LM63")
  45         .enable_dev = enable_dev,
  46 };