Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*
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* Copyright (C) 2007 Antonino Daplas <adaplas@gmail.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/screen_info.h>
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#include <linux/vgaarb.h>
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#include <asm/video.h>
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pgprot_t pgprot_framebuffer(pgprot_t prot,
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unsigned long vm_start, unsigned long vm_end,
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unsigned long offset)
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{
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pgprot_val(prot) &= ~_PAGE_CACHE_MASK;
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if (boot_cpu_data.x86 > 3)
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pgprot_val(prot) |= cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS);
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return prot;
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}
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EXPORT_SYMBOL(pgprot_framebuffer);
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bool video_is_primary_device(struct device *dev)
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{
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#ifdef CONFIG_SCREEN_INFO
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struct screen_info *si = &screen_info;
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struct resource res[SCREEN_INFO_MAX_RESOURCES];
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ssize_t i, numres;
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#endif
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struct pci_dev *pdev;
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if (!dev_is_pci(dev))
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return false;
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pdev = to_pci_dev(dev);
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if (!pci_is_display(pdev))
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return false;
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if (pdev == vga_default_device())
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return true;
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#ifdef CONFIG_SCREEN_INFO
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numres = screen_info_resources(si, res, ARRAY_SIZE(res));
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for (i = 0; i < numres; ++i) {
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if (!(res[i].flags & IORESOURCE_MEM))
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continue;
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if (pci_find_resource(pdev, &res[i]))
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return true;
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}
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#endif
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return false;
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}
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EXPORT_SYMBOL(video_is_primary_device);
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MODULE_LICENSE("GPL");
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