From: Benoit Goby <benoit@android.com>
Date: Fri, 3 Dec 2010 22:59:55 +0000 (-0800)
Subject: Revert "usb: host: tegra: Remove programing PTC bits based on bus speed."
X-Git-Tag: firefly_0821_release~9833^2~93^2~9
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=cd1bc934046a7edac3db25fb59327f14958dcd83;p=firefly-linux-kernel-4.4.55.git

Revert "usb: host: tegra: Remove programing PTC bits based on bus speed."

This reverts commit 91e80b79243c1b6341c1a8d6e8e5e872b837bfea.

This is needed to resume usb from lp0
---

diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 5cdad2531ba1..b02eabb5a61d 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -286,6 +286,18 @@ static int tegra_usb_resume(struct usb_hcd *hcd)
 	writel(val, &hw->port_status[0]);
 	udelay(10);
 
+	/* Program the field PTC in PORTSC based on the saved speed mode */
+	val = readl(&hw->port_status[0]);
+	val &= ~(TEGRA_USB_PORTSC1_PTC(~0));
+	if (context->port_speed == TEGRA_USB_PHY_PORT_HIGH)
+		val |= TEGRA_USB_PORTSC1_PTC(5);
+	else if (context->port_speed == TEGRA_USB_PHY_PORT_SPEED_FULL)
+		val |= TEGRA_USB_PORTSC1_PTC(6);
+	else if (context->port_speed == TEGRA_USB_PHY_PORT_SPEED_LOW)
+		val |= TEGRA_USB_PORTSC1_PTC(7);
+	writel(val, &hw->port_status[0]);
+	udelay(10);
+
 	/* Disable test mode by setting PTC field to NORMAL_OP */
 	val = readl(&hw->port_status[0]);
 	val &= ~(TEGRA_USB_PORTSC1_PTC(~0));