PCI: tegra194: Use FIELD_GET()/FIELD_PREP() with Link Width fields

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[ Upstream commit 759574abd7 ]

Use FIELD_GET() to extract PCIe Negotiated Link Width field instead of
custom masking and shifting.

Similarly, change custom code that misleadingly used
PCI_EXP_LNKSTA_NLW_SHIFT to prepare value for PCI_EXP_LNKCAP write
to use FIELD_PREP() with correct field define (PCI_EXP_LNKCAP_MLW).

Link: https://lore.kernel.org/r/20230919125648.1920-5-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Ilpo Järvinen 2023-09-19 15:56:44 +03:00 • committed by Greg Kroah-Hartman

parent 43b91df291

commit aac90c7197

1 changed files with 4 additions and 5 deletions

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drivers/pci/controller/dwc/pcie-tegra194.c

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