diff options
| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2015-03-17 18:32:22 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-18 16:21:14 +0100 |
| commit | 7b8ef22ea547b80475ac7feab06fb15e0fc143d8 (patch) | |
| tree | 8cee045cfa7dd4b4275e3187c535ee61d3be627e /drivers/usb/host | |
| parent | e5401bf37a69620bdf079e4ee6c30a268f06f04b (diff) | |
| download | lwn-7b8ef22ea547b80475ac7feab06fb15e0fc143d8.tar.gz lwn-7b8ef22ea547b80475ac7feab06fb15e0fc143d8.zip | |
usb: xhci: plat: Add USB phy support
The Marvell Armada 385 AP needs a dumb phy in order to enable the USB3 VBUS.
Add a call to retrieve a USB PHY to XHCI plat in order to support this.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/xhci-plat.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 0e11d61408ff..783e819139a7 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -16,6 +16,7 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> +#include <linux/usb/phy.h> #include <linux/slab.h> #include <linux/usb/xhci_pdriver.h> @@ -155,12 +156,27 @@ static int xhci_plat_probe(struct platform_device *pdev) if (HCC_MAX_PSA(xhci->hcc_params) >= 4) xhci->shared_hcd->can_do_streams = 1; + hcd->usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0); + if (IS_ERR(hcd->usb_phy)) { + ret = PTR_ERR(hcd->usb_phy); + if (ret == -EPROBE_DEFER) + goto put_usb3_hcd; + hcd->usb_phy = NULL; + } else { + ret = usb_phy_init(hcd->usb_phy); + if (ret) + goto put_usb3_hcd; + } + ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED); if (ret) - goto put_usb3_hcd; + goto disable_usb_phy; return 0; +disable_usb_phy: + usb_phy_shutdown(hcd->usb_phy); + put_usb3_hcd: usb_put_hcd(xhci->shared_hcd); @@ -184,6 +200,7 @@ static int xhci_plat_remove(struct platform_device *dev) struct clk *clk = xhci->clk; usb_remove_hcd(xhci->shared_hcd); + usb_phy_shutdown(hcd->usb_phy); usb_put_hcd(xhci->shared_hcd); usb_remove_hcd(hcd); |