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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>
This commit is contained in:
Alexander Shishkin 2012-05-11 17:25:55 +03:00 committed by Greg Kroah-Hartman
parent eb70e5ab8f
commit bd841986e4
3 changed files with 10 additions and 1 deletions
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8
drivers/usb/chipidea/ci13xxx_pci.c
View File

@ -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 */ }
};

2
drivers/usb/chipidea/host.c
View File

@ -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;

1
include/linux/usb/chipidea.h
View File

@ -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)