PCI: dwc: Add accessors for write permission of DBI read-only registers

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The read-only DBI registers can be written only when the "Write to RO
Registers Using DBI" (DBI_RO_WR_EN) field of MISC_CONTROL_1_OFF is set.

Add accessors to enable and disable write permission, and use them instead
of accessing MISC_CONTROL_1_OFF directly.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Joao Pinto <jpinto@synopsys.com>
Acked-by: Roy Zang <tie-fei.zang@freescale.com>

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Hou Zhiqiang 2017-08-28 18:52:59 +08:00 • committed by Bjorn Helgaas

parent 4a2745d760

commit e44abfed6f

2 changed files with 27 additions and 3 deletions

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5

drivers/pci/dwc/pci-layerscape.c

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25

drivers/pci/dwc/pcie-designware.h

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