linux-kernel - [PATCH V5 15/15] arm64, pci, acpi: Start using ACPI based PCI host bridge driver for ARM64.

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Date:	Tue, 16 Feb 2016 14:53:45 +0100
From:	Tomasz Nowicki <tn@...ihalf.com>
To:	helgaas@...nel.org, arnd@...db.de, will.deacon@....com,
	catalin.marinas@....com, rafael@...nel.org, hanjun.guo@...aro.org,
	Lorenzo.Pieralisi@....com, okaya@...eaurora.org,
	jiang.liu@...ux.intel.com, jchandra@...adcom.com,
	Stefano.Stabellini@...citrix.com
Cc:	robert.richter@...iumnetworks.com, mw@...ihalf.com,
	Liviu.Dudau@....com, ddaney@...iumnetworks.com,
	wangyijing@...wei.com, Suravee.Suthikulpanit@....com,
	msalter@...hat.com, linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linaro-acpi@...ts.linaro.org,
	jcm@...hat.com, Tomasz Nowicki <tn@...ihalf.com>
Subject: [PATCH V5 15/15] arm64, pci, acpi: Start using ACPI based PCI host bridge driver for ARM64.

It is perfectly fine to use ACPI_PCI_HOST_GENERIC for ARM64,
so lets get rid of PCI init empty stub, related ACPI header and
go with full-blown PCI host controller driver.

Signed-off-by: Tomasz Nowicki <tn@...ihalf.com>
TO: Catalin Marinas <catalin.marinas@....com>
TO: Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>
TO: Will Deacon <will.deacon@....com>
TO: Arnd Bergmann <arnd@...db.de>
CC: Liviu Dudau <Liviu.Dudau@....com>
Tested-by: Duc Dang <dhdang@....com>
Tested-by: Dongdong Liu <liudongdong3@...wei.com>
Tested-by: Hanjun Guo <hanjun.guo@...aro.org>
Tested-by: Graeme Gregory <graeme.gregory@...aro.org>
Tested-by: Sinan Kaya <okaya@...eaurora.org>
---
 arch/arm64/Kconfig      | 1 +
 arch/arm64/kernel/pci.c | 9 ---------
 2 files changed, 1 insertion(+), 9 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 552e996..09c49ea 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -2,6 +2,7 @@ config ARM64
 	def_bool y
 	select ACPI_CCA_REQUIRED if ACPI
 	select ACPI_GENERIC_GSI if ACPI
+	select ACPI_PCI_HOST_GENERIC if ACPI
 	select ACPI_REDUCED_HARDWARE_ONLY if ACPI
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index 6e77e1b..1de0168 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -65,12 +65,3 @@ int pcibios_alloc_irq(struct pci_dev *dev)
 
 	return 0;
 }
-
-#ifdef CONFIG_ACPI
-/* Root bridge scanning */
-struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
-{
-	/* TODO: Should be revisited when implementing PCI on ACPI */
-	return NULL;
-}
-#endif
-- 
1.9.1