diff options
| author | Florian Fainelli <florian@openwrt.org> | 2012-10-08 15:11:21 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-22 11:15:47 -0700 |
| commit | 4534874a8720a361845dce47d310a98e9aac8aeb (patch) | |
| tree | 5eb0a1d92af8eac4d813d68dc66992f5a063b8eb | |
| parent | 6d39944ee85fb46cd499b16231cbb10a00e3d878 (diff) | |
USB: EHCI: add no_io_watchdog platform_data parameter to ehci-platform
Enhance the ehci-platform driver to also accept no_io_watchdog as a platform
data parameter. When no_io_watchdog is set to 1, the ehci controller will set
ehci->need_io_watchdog to 0. Since most EHCI controllers do need the I/O
watchdog to be on, only let those which need it to turn the watchdog off.
Make sure that we change need_io_watchdog after the call to ehci_setup()
because ehci_setup() will unconditionnaly set need_io_watchdog to 1.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/host/ehci-platform.c | 2 | ||||
| -rw-r--r-- | include/linux/usb/ehci_pdriver.h | 3 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index 764e0100b6f4..607adf9adb83 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -38,6 +38,8 @@ static int ehci_platform_reset(struct usb_hcd *hcd) if (retval) return retval; + if (pdata->no_io_watchdog) + ehci->need_io_watchdog = 0; if (pdata->port_power_on) ehci_port_power(ehci, 1); if (pdata->port_power_off) diff --git a/include/linux/usb/ehci_pdriver.h b/include/linux/usb/ehci_pdriver.h index c9d09f8b7ff2..67ac74bde6d0 100644 --- a/include/linux/usb/ehci_pdriver.h +++ b/include/linux/usb/ehci_pdriver.h @@ -29,6 +29,8 @@ * initialization. * @port_power_off: set to 1 if the controller needs to be powered down * after initialization. + * @no_io_watchdog: set to 1 if the controller does not need the I/O + * watchdog to run. * * These are general configuration options for the EHCI controller. All of * these options are activating more or less workarounds for some hardware. @@ -41,6 +43,7 @@ struct usb_ehci_pdata { unsigned big_endian_mmio:1; unsigned port_power_on:1; unsigned port_power_off:1; + unsigned no_io_watchdog:1; /* Turn on all power and clocks */ int (*power_on)(struct platform_device *pdev); |