linux-kernel - [PATCH V5 3/3] PCI: dwc: Export APIs to support .remove() implementation

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Message-ID: <20190621092127.17930-3-vidyas@nvidia.com>
Date:   Fri, 21 Jun 2019 14:51:27 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     <jingoohan1@...il.com>, <gustavo.pimentel@...opsys.com>,
        <lorenzo.pieralisi@....com>, <bhelgaas@...gle.com>,
        <Jisheng.Zhang@...aptics.com>, <thierry.reding@...il.com>,
        <kishon@...com>
CC:     <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <kthota@...dia.com>, <mmaddireddy@...dia.com>, <vidyas@...dia.com>,
        <sagar.tv@...il.com>
Subject: [PATCH V5 3/3] PCI: dwc: Export APIs to support .remove() implementation

Export all configuration space access APIs and also other APIs to
support host controller drivers of DesignWare core based implementations
while adding support for .remove() hook to build their respective drivers
as modules

Signed-off-by: Vidya Sagar <vidyas@...dia.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@...opsys.com>
---
Changes from v4:
* Removed __ (underscore) from dw_pcie_{write/read}_dbi API names

Changes from v3:
* Exported only __dw_pcie_{read/write}_dbi() APIs instead of
  dw_pcie_read{l/w/b}_dbi & dw_pcie_write{l/w/b}_dbi APIs.

Changes from v2:
* Rebased on top of linux-next top of the tree branch

Changes from v1:
* s/Designware/DesignWare

 drivers/pci/controller/dwc/pcie-designware-host.c | 4 ++++
 drivers/pci/controller/dwc/pcie-designware.c      | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index d069e4290180..f93252d0da5b 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -311,6 +311,7 @@ void dw_pcie_msi_init(struct pcie_port *pp)
 	dw_pcie_wr_own_conf(pp, PCIE_MSI_ADDR_HI, 4,
 			    upper_32_bits(msi_target));
 }
+EXPORT_SYMBOL_GPL(dw_pcie_msi_init);
 
 int dw_pcie_host_init(struct pcie_port *pp)
 {
@@ -495,6 +496,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 		dw_pcie_free_msi(pp);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(dw_pcie_host_init);
 
 void dw_pcie_host_deinit(struct pcie_port *pp)
 {
@@ -503,6 +505,7 @@ void dw_pcie_host_deinit(struct pcie_port *pp)
 	if (pci_msi_enabled() && !pp->ops->msi_host_init)
 		dw_pcie_free_msi(pp);
 }
+EXPORT_SYMBOL_GPL(dw_pcie_host_deinit);
 
 static int dw_pcie_access_other_conf(struct pcie_port *pp, struct pci_bus *bus,
 				     u32 devfn, int where, int size, u32 *val,
@@ -695,3 +698,4 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
 	val |= PORT_LOGIC_SPEED_CHANGE;
 	dw_pcie_wr_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, val);
 }
+EXPORT_SYMBOL_GPL(dw_pcie_setup_rc);
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index 5d22028d854e..a6504295ac58 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -34,6 +34,7 @@ int dw_pcie_read(void __iomem *addr, int size, u32 *val)
 
 	return PCIBIOS_SUCCESSFUL;
 }
+EXPORT_SYMBOL_GPL(dw_pcie_read);
 
 int dw_pcie_write(void __iomem *addr, int size, u32 val)
 {
@@ -51,6 +52,7 @@ int dw_pcie_write(void __iomem *addr, int size, u32 val)
 
 	return PCIBIOS_SUCCESSFUL;
 }
+EXPORT_SYMBOL_GPL(dw_pcie_write);
 
 u32 dw_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg,
 		     size_t size)
@@ -67,6 +69,7 @@ u32 dw_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg,
 
 	return val;
 }
+EXPORT_SYMBOL_GPL(dw_pcie_read_dbi);
 
 void dw_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg,
 		       size_t size, u32 val)
@@ -82,6 +85,7 @@ void dw_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg,
 	if (ret)
 		dev_err(pci->dev, "Write DBI address failed\n");
 }
+EXPORT_SYMBOL_GPL(dw_pcie_write_dbi);
 
 u32 dw_pcie_read_dbi2(struct dw_pcie *pci, void __iomem *base, u32 reg,
 		      size_t size)
-- 
2.17.1