[PATCH 3/9] PCI: mvebu: remove subsys_initcall

[Sebastian Hesselbarth]

This removes the subsys_initcall from the driver and converts it to
a normal platform_driver. Also, drvdata is set and a remove functions
is added to disable the clock and free resources.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth at gmail.com>
---
Cc: Russell King <linux at arm.linux.org.uk>
Cc: Jason Cooper <jason at lakedaemon.net>
Cc: Andrew Lunn <andrew at lunn.ch>
Cc: Bjorn Helgaas <bhelgaas at google.com>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Cc: linux-kernel at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-pci at vger.kernel.org
---
 drivers/pci/host/pci-mvebu.c |   46 +++++++++++++++++++++++++-----------------
 1 file changed, 27 insertions(+), 19 deletions(-)

diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c
index 0a359d7..2370b59 100644
--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/host/pci-mvebu.c
@@ -165,7 +165,7 @@ static void mvebu_pcie_set_local_dev_nr(struct mvebu_pcie_port *port, int nr)
  * BAR[0,2] -> disabled, BAR[1] -> covers all DRAM banks
  * WIN[0-3] -> DRAM bank[0-3]
  */
-static void __init mvebu_pcie_setup_wins(struct mvebu_pcie_port *port)
+static void mvebu_pcie_setup_wins(struct mvebu_pcie_port *port)
 {
 	const struct mbus_dram_target_info *dram;
 	u32 size;
@@ -217,7 +217,7 @@ static void __init mvebu_pcie_setup_wins(struct mvebu_pcie_port *port)
 	       port->base + PCIE_BAR_CTRL_OFF(1));
 }
 
-static void __init mvebu_pcie_setup_hw(struct mvebu_pcie_port *port)
+static void mvebu_pcie_setup_hw(struct mvebu_pcie_port *port)
 {
 	u16 cmd;
 	u32 mask;
@@ -628,7 +628,7 @@ static struct pci_ops mvebu_pcie_ops = {
 	.write = mvebu_pcie_wr_conf,
 };
 
-static int __init mvebu_pcie_setup(int nr, struct pci_sys_data *sys)
+static int mvebu_pcie_setup(int nr, struct pci_sys_data *sys)
 {
 	struct mvebu_pcie *pcie = sys_to_pcie(sys);
 	int i;
@@ -647,7 +647,7 @@ static int __init mvebu_pcie_setup(int nr, struct pci_sys_data *sys)
 	return 1;
 }
 
-static int __init mvebu_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+static int mvebu_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	struct of_irq oirq;
 	int ret;
@@ -704,7 +704,7 @@ resource_size_t mvebu_pcie_align_resource(struct pci_dev *dev,
 		return start;
 }
 
-static void __init mvebu_pcie_enable(struct mvebu_pcie *pcie)
+static void mvebu_pcie_enable(struct mvebu_pcie *pcie)
 {
 	struct hw_pci hw;
 
@@ -727,10 +727,8 @@ static void __init mvebu_pcie_enable(struct mvebu_pcie *pcie)
  * <...> property for one that matches the given port/lane. Once
  * found, maps it.
  */
-static void __iomem * __init
-mvebu_pcie_map_registers(struct platform_device *pdev,
-			 struct device_node *np,
-			 struct mvebu_pcie_port *port)
+static void __iomem *mvebu_pcie_map_registers(struct platform_device *pdev,
+		      struct device_node *np, struct mvebu_pcie_port *port)
 {
 	struct resource regs;
 	int ret = 0;
@@ -786,7 +784,7 @@ static int mvebu_get_tgt_attr(struct device_node *np, int devfn,
 	return -ENOENT;
 }
 
-static void __init mvebu_pcie_msi_enable(struct mvebu_pcie *pcie)
+static void mvebu_pcie_msi_enable(struct mvebu_pcie *pcie)
 {
 	struct device_node *msi_node;
 
@@ -801,7 +799,7 @@ static void __init mvebu_pcie_msi_enable(struct mvebu_pcie *pcie)
 		pcie->msi->dev = &pcie->pdev->dev;
 }
 
-static int __init mvebu_pcie_probe(struct platform_device *pdev)
+static int mvebu_pcie_probe(struct platform_device *pdev)
 {
 	struct mvebu_pcie *pcie;
 	struct device_node *np = pdev->dev.of_node;
@@ -814,6 +812,7 @@ static int __init mvebu_pcie_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	pcie->pdev = pdev;
+	platform_set_drvdata(pdev, pcie);
 
 	/* Get the PCIe memory and I/O aperture */
 	mvebu_mbus_get_pcie_mem_aperture(&pcie->mem);
@@ -939,6 +938,20 @@ static int __init mvebu_pcie_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static int mvebu_pcie_remove(struct platform_device *pdev)
+{
+	struct mvebu_pcie *pcie = platform_get_drvdata(pdev);
+	struct mvebu_pcie_port *port = &pcie->ports[0];
+	int i;
+
+	for (i = 0; i < pcie->nports; i++, port++) {
+		clk_disable_unprepare(port->clk);
+		kfree(port->name);
+	}
+
+	return 0;
+}
+
 static const struct of_device_id mvebu_pcie_of_match_table[] = {
 	{ .compatible = "marvell,armada-xp-pcie", },
 	{ .compatible = "marvell,armada-370-pcie", },
@@ -954,15 +967,10 @@ static struct platform_driver mvebu_pcie_driver = {
 		.of_match_table =
 		   of_match_ptr(mvebu_pcie_of_match_table),
 	},
+	.probe = mvebu_pcie_probe,
+	.remove = mvebu_pcie_remove,
 };
-
-static int __init mvebu_pcie_init(void)
-{
-	return platform_driver_probe(&mvebu_pcie_driver,
-				     mvebu_pcie_probe);
-}
-
-subsys_initcall(mvebu_pcie_init);
+module_platform_driver(mvebu_pcie_driver);
 
 MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni at free-electrons.com>");
 MODULE_DESCRIPTION("Marvell EBU PCIe driver");
-- 
1.7.10.4