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path: root/drivers/usb/host/xhci-plat.c
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Diffstat (limited to 'drivers/usb/host/xhci-plat.c')
-rw-r--r--drivers/usb/host/xhci-plat.c51
1 files changed, 45 insertions, 6 deletions
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 151901ce1ba9..29d8adb5c8d1 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -11,13 +11,15 @@
* version 2 as published by the Free Software Foundation.
*/
-#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
#include <linux/module.h>
-#include <linux/slab.h>
#include <linux/of.h>
-#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
#include "xhci.h"
+#include "xhci-mvebu.h"
static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
{
@@ -35,6 +37,11 @@ static int xhci_plat_setup(struct usb_hcd *hcd)
return xhci_gen_setup(hcd, xhci_plat_quirks);
}
+static int xhci_plat_start(struct usb_hcd *hcd)
+{
+ return xhci_run(hcd);
+}
+
static const struct hc_driver xhci_plat_xhci_driver = {
.description = "xhci-hcd",
.product_desc = "xHCI Host Controller",
@@ -50,7 +57,7 @@ static const struct hc_driver xhci_plat_xhci_driver = {
* basic lifecycle operations
*/
.reset = xhci_plat_setup,
- .start = xhci_run,
+ .start = xhci_plat_start,
.stop = xhci_stop,
.shutdown = xhci_shutdown,
@@ -91,6 +98,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
struct xhci_hcd *xhci;
struct resource *res;
struct usb_hcd *hcd;
+ struct clk *clk;
int ret;
int irq;
@@ -107,6 +115,15 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (!res)
return -ENODEV;
+ if (of_device_is_compatible(pdev->dev.of_node,
+ "marvell,armada-375-xhci") ||
+ of_device_is_compatible(pdev->dev.of_node,
+ "marvell,armada-380-xhci")) {
+ ret = xhci_mvebu_mbus_init_quirk(pdev);
+ if (ret)
+ return ret;
+ }
+
/* Initialize dma_mask and coherent_dma_mask to 32-bits */
ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret)
@@ -137,14 +154,27 @@ static int xhci_plat_probe(struct platform_device *pdev)
goto release_mem_region;
}
+ /*
+ * Not all platforms have a clk so it is not an error if the
+ * clock does not exists.
+ */
+ clk = devm_clk_get(&pdev->dev, NULL);
+ if (!IS_ERR(clk)) {
+ ret = clk_prepare_enable(clk);
+ if (ret)
+ goto unmap_registers;
+ }
+
ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (ret)
- goto unmap_registers;
+ goto disable_clk;
+
device_wakeup_enable(hcd->self.controller);
/* USB 2.0 roothub is stored in the platform_device now. */
hcd = platform_get_drvdata(pdev);
xhci = hcd_to_xhci(hcd);
+ xhci->clk = clk;
xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev,
dev_name(&pdev->dev), hcd);
if (!xhci->shared_hcd) {
@@ -173,6 +203,10 @@ put_usb3_hcd:
dealloc_usb2_hcd:
usb_remove_hcd(hcd);
+disable_clk:
+ if (!IS_ERR(clk))
+ clk_disable_unprepare(clk);
+
unmap_registers:
iounmap(hcd->regs);
@@ -189,11 +223,14 @@ static int xhci_plat_remove(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+ struct clk *clk = xhci->clk;
usb_remove_hcd(xhci->shared_hcd);
usb_put_hcd(xhci->shared_hcd);
usb_remove_hcd(hcd);
+ if (!IS_ERR(clk))
+ clk_disable_unprepare(clk);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
@@ -202,7 +239,7 @@ static int xhci_plat_remove(struct platform_device *dev)
return 0;
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static int xhci_plat_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
@@ -231,6 +268,8 @@ static const struct dev_pm_ops xhci_plat_pm_ops = {
static const struct of_device_id usb_xhci_of_match[] = {
{ .compatible = "generic-xhci" },
{ .compatible = "xhci-platform" },
+ { .compatible = "marvell,armada-375-xhci"},
+ { .compatible = "marvell,armada-380-xhci"},
{ },
};
MODULE_DEVICE_TABLE(of, usb_xhci_of_match);