2025cf9e19
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 263 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.208660670@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/**************************************************************************
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* Copyright (c) 2011, Intel Corporation.
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* All Rights Reserved.
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*
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**************************************************************************/
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#include <drm/drmP.h>
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#include "psb_drv.h"
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void gma_get_core_freq(struct drm_device *dev)
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{
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uint32_t clock;
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struct pci_dev *pci_root =
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pci_get_domain_bus_and_slot(pci_domain_nr(dev->pdev->bus),
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0, 0);
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struct drm_psb_private *dev_priv = dev->dev_private;
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/*pci_write_config_dword(pci_root, 0xD4, 0x00C32004);*/
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/*pci_write_config_dword(pci_root, 0xD0, 0xE0033000);*/
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pci_write_config_dword(pci_root, 0xD0, 0xD0050300);
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pci_read_config_dword(pci_root, 0xD4, &clock);
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pci_dev_put(pci_root);
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switch (clock & 0x07) {
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case 0:
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dev_priv->core_freq = 100;
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break;
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case 1:
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dev_priv->core_freq = 133;
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break;
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case 2:
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dev_priv->core_freq = 150;
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break;
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case 3:
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dev_priv->core_freq = 178;
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break;
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case 4:
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dev_priv->core_freq = 200;
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break;
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case 5:
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case 6:
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case 7:
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dev_priv->core_freq = 266;
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break;
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default:
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dev_priv->core_freq = 0;
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}
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}
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