Commit a5fe6b59 authored Mar 27, 2014 by Pavankumar Kondeti Committed by Tarun Gupta Mar 28, 2014

USB: ice40-hcd: Add configuration loading test



Provide a debug facility to power off the bridge chip and load the
configuration file. This will be useful to test the configuration
loading multiple times. The below command needs to be executed
to run this test.

echo -n "config_test" > /sys/kernel/debug/ice40_hcd/command

Change-Id: I22d8d5f87f35cd98dafa4189de34169a95e62a67
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>

parent 2c227c65

drivers/usb/host/ice40-hcd.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -1949,6 +1949,13 @@ static ssize_t ice40_dbg_cmd_write(struct file file, const char __user ubuf,
		ihcd->port_flags \|= (USB_PORT_STAT_C_CONNECTION << 16);
		ihcd->pcd_pending = true;
		usb_hcd_poll_rh_status(ihcd->hcd);
		} else if (!strcmp(buf, "config_test")) {
		ice40_spi_power_off(ihcd);
		ret = ice40_spi_load_fw(ihcd);
		if (ret) {
		pr_err("config load failed\n");
		goto out;
		}
		} else {
		ret = -EINVAL;
		goto out;