thermal.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/mmio.h>
#include <device/pci_ops.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
 
#include "i82801ix.h"
 
static void thermal_init(struct device *dev)
{
        if (LPC_IS_MOBILE(pcidev_on_root(0x1f, 0)))
                return;
 
        u8 reg8;
 
        pci_write_config32(dev, 0x10, (uintptr_t)DEFAULT_TBAR);
        pci_or_config32(dev, 0x04, 1 << 1);
 
        write32(DEFAULT_TBAR + 0x04, 0); /* Clear thermal trip points. */
        write32(DEFAULT_TBAR + 0x44, 0);
 
        write8(DEFAULT_TBAR + 0x01, 0xba); /* Enable sensor 0 + 1. */
        write8(DEFAULT_TBAR + 0x41, 0xba);
 
        reg8 = read8(DEFAULT_TBAR + 0x08); /* Lock thermal registers. */
        write8(DEFAULT_TBAR + 0x08, reg8 | (1 << 7));
        reg8 = read8(DEFAULT_TBAR + 0x48);
        write8(DEFAULT_TBAR + 0x48, reg8 | (1 << 7));
 
        pci_and_config32(dev, 0x04, ~(1 << 1));
        pci_write_config32(dev, 0x10, 0);
}
 
static struct device_operations device_ops = {
        .read_resources         = pci_dev_read_resources,
        .set_resources          = pci_dev_set_resources,
        .enable_resources       = pci_dev_enable_resources,
        .init                   = thermal_init,
        .ops_pci                = &pci_dev_ops_pci,
};
 
static const struct pci_driver ich9_thermal __pci_driver = {
        .ops    = &device_ops,
        .vendor = PCI_VID_INTEL,
        .device = PCI_DID_INTEL_82801IB_THERMAL,
};