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| author |   Gregory CLEMENT <gregory.clement@free-electrons.com> | 2014-05-15 12:17:32 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-27 15:33:13 -0700 |
| commit | 4718c177405112386a977fd9f1cba5fd6aa82315 (patch) | |
| tree | 999a876e99861cc4d84a6d18dc5ae1f3bc6cf8b5 /drivers/usb/host/xhci.h | |
| parent | usb: host: xhci-plat: sort the headers in alphabetic order (diff) | |
| download | linux-dev-4718c177405112386a977fd9f1cba5fd6aa82315.tar.xz linux-dev-4718c177405112386a977fd9f1cba5fd6aa82315.zip | |
usb: host: xhci-plat: add clock support
Some platforms (such as the Armada 38x ones) can gate the clock of
their USB controller. This patch adds the support for one clock in
xhci-plat, by enabling it during probe and disabling it on remove.
To achieve this, it adds a 'struct clk *' member in xhci_hcd. While
only used for now in xhci-plat, it might be used by other drivers in
the future. Moreover, the xhci_hcd structure already holds other
members such as msix_count and msix_entries, which are MSI-X specific,
and therefore only used by xhci-pci.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/usb/host/xhci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 2774526449a6..9ffecd56600d 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1472,6 +1472,8 @@ struct xhci_hcd { /* msi-x vectors */ int msix_count; struct msix_entry *msix_entries; + /* optional clock */ + struct clk *clk; /* data structures */ struct xhci_device_context_array *dcbaa; struct xhci_ring *cmd_ring; |