1 /**************************************************************************
2 * Copyright (c) 2011, Intel Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 **************************************************************************/
19 void gma_get_core_freq(struct drm_device *dev)
22 struct pci_dev *pci_root =
23 pci_get_domain_bus_and_slot(pci_domain_nr(dev->pdev->bus),
25 struct drm_psb_private *dev_priv = dev->dev_private;
27 /*pci_write_config_dword(pci_root, 0xD4, 0x00C32004);*/
28 /*pci_write_config_dword(pci_root, 0xD0, 0xE0033000);*/
30 pci_write_config_dword(pci_root, 0xD0, 0xD0050300);
31 pci_read_config_dword(pci_root, 0xD4, &clock);
32 pci_dev_put(pci_root);
34 switch (clock & 0x07) {
36 dev_priv->core_freq = 100;
39 dev_priv->core_freq = 133;
42 dev_priv->core_freq = 150;
45 dev_priv->core_freq = 178;
48 dev_priv->core_freq = 200;
53 dev_priv->core_freq = 266;
56 dev_priv->core_freq = 0;