usb: chipidea: add power_budget limit for ehci to platform data

Some implementations need this limitation to work correctly.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/chipidea/ci13xxx_pci.c b/drivers/usb/chipidea/ci13xxx_pci.c
index f190140..e3dab27 100644 (file)
--- a/drivers/usb/chipidea/ci13xxx_pci.c
+++ b/drivers/usb/chipidea/ci13xxx_pci.c
@@ -33,6 +33,12 @@ struct ci13xxx_udc_driver langwell_pci_driver = {
        .capoffset      = 0,
 };
 
+struct ci13xxx_udc_driver penwell_pci_driver = {
+       .name           = UDC_DRIVER_NAME,
+       .capoffset      = 0,
+       .power_budget   = 200,
+};
+
 /**
  * ci13xxx_pci_probe: PCI probe
  * @pdev: USB device controller being probed
@@ -153,7 +159,7 @@ static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = {
        },
        {
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
-               .driver_data = (kernel_ulong_t)&langwell_pci_driver,
+               .driver_data = (kernel_ulong_t)&penwell_pci_driver,
        },
        { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ }
 };

diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 8c8362c..0cffcfe 100644 (file)
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -116,6 +116,8 @@ static int host_start(struct ci13xxx *ci)
        hcd->regs = ci->hw_bank.abs;
        hcd->has_tt = 1;
 
+       hcd->power_budget = ci->udc_driver->power_budget;
+
        ehci = hcd_to_ehci(hcd);
        ehci->caps = ci->hw_bank.cap;
        ehci->has_hostpc = ci->hw_bank.lpm;

diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index 86273ce..edb90d6 100644 (file)
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -10,6 +10,7 @@ struct ci13xxx_udc_driver {
        const char      *name;
        /* offset of the capability registers */
        uintptr_t        capoffset;
+       unsigned         power_budget;
        unsigned long    flags;
 #define CI13XXX_REGS_SHARED            BIT(0)
 #define CI13XXX_REQUIRE_TRANSCEIVER    BIT(1)