src/southbridge/intel/i82801ix/thermal.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/mmio.h>
   4 #include <device/pci_ops.h>
   5 #include <device/device.h>
   6 #include <device/pci.h>
   7 #include <device/pci_ids.h>
   8
   9 #include "i82801ix.h"
  10
  11 static void thermal_init(struct device *dev)
  12 {
  13         if (LPC_IS_MOBILE(pcidev_on_root(0x1f, 0)))
  14                 return;
  15
  16         u8 reg8;
  17
  18         pci_write_config32(dev, 0x10, (uintptr_t)DEFAULT_TBAR);
  19         pci_or_config32(dev, 0x04, 1 << 1);
  20
  21         write32(DEFAULT_TBAR + 0x04, 0); /* Clear thermal trip points. */
  22         write32(DEFAULT_TBAR + 0x44, 0);
  23
  24         write8(DEFAULT_TBAR + 0x01, 0xba); /* Enable sensor 0 + 1. */
  25         write8(DEFAULT_TBAR + 0x41, 0xba);
  26
  27         reg8 = read8(DEFAULT_TBAR + 0x08); /* Lock thermal registers. */
  28         write8(DEFAULT_TBAR + 0x08, reg8 | (1 << 7));
  29         reg8 = read8(DEFAULT_TBAR + 0x48);
  30         write8(DEFAULT_TBAR + 0x48, reg8 | (1 << 7));
  31
  32         pci_and_config32(dev, 0x04, ~(1 << 1));
  33         pci_write_config32(dev, 0x10, 0);
  34 }
  35
  36 static struct device_operations device_ops = {
  37         .read_resources         = pci_dev_read_resources,
  38         .set_resources          = pci_dev_set_resources,
  39         .enable_resources       = pci_dev_enable_resources,
  40         .init                   = thermal_init,
  41         .ops_pci                = &pci_dev_ops_pci,
  42 };
  43
  44 static const struct pci_driver ich9_thermal __pci_driver = {
  45         .ops    = &device_ops,
  46         .vendor = PCI_VID_INTEL,
  47         .device = PCI_DID_INTEL_82801IB_THERMAL,
  48 };