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>

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 */ }
 };

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;

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)