/alps/pcitool

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  • Committer: Suren A. Chilingaryan
  • Date: 2016-03-02 18:37:30 UTC
  • Revision ID: csa@suren.me-20160302183730-nlrgi7h3yuizcizc
Restructure driver headers

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Lines of Context:
driver/compat.c
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#include <linux/pci.h>
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int pcidriver_pcie_get_mps(struct pci_dev *dev)
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{
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    u16 ctl;
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    pcie_capability_read_word(dev, PCI_EXP_DEVCTL, &ctl);
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    return 128 << ((ctl & PCI_EXP_DEVCTL_PAYLOAD) >> 5);
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}
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int pcidriver_pcie_set_mps(struct pci_dev *dev, int mps)
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{
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    u16 v;
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    if (mps < 128 || mps > 4096 || !is_power_of_2(mps))
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        return -EINVAL;
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    v = ffs(mps) - 8;
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    if (v > dev->pcie_mpss)
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        return -EINVAL;
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    v <<= 5;
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    return pcie_capability_clear_and_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_PAYLOAD, v);
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}