From: David Brownell <dbrownell@users.sourceforge.net>
Date: Wed, 1 Jul 2009 10:32:43 +0000 (-0700)
Subject: USB: musb: davinci dm355 updates (remainder)
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d163ef248385fc434e44b04a5151ae5d6a6c2d16;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

USB: musb: davinci dm355 updates (remainder)

Finish merging updates for DM355 chips into musb/davinci.c now
that its support is in mainline:  kick in new DRVVBUS controls.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index 180d7daa4099..658ae4e83f6a 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -35,6 +35,7 @@
 #include <mach/hardware.h>
 #include <mach/memory.h>
 #include <mach/gpio.h>
+#include <mach/cputype.h>
 
 #include <asm/mach-types.h>
 
@@ -411,6 +412,21 @@ int __init musb_platform_init(struct musb *musb)
 		__raw_writel(phy_ctrl, USB_PHY_CTRL);
 	}
 
+	/* On dm355, the default-A state machine needs DRVVBUS control.
+	 * If we won't be a host, there's no need to turn it on.
+	 */
+	if (cpu_is_davinci_dm355()) {
+		u32	deepsleep = __raw_readl(DM355_DEEPSLEEP);
+
+		if (is_host_enabled(musb)) {
+			deepsleep &= ~DRVVBUS_OVERRIDE;
+		} else {
+			deepsleep &= ~DRVVBUS_FORCE;
+			deepsleep |= DRVVBUS_OVERRIDE;
+		}
+		__raw_writel(deepsleep, DM355_DEEPSLEEP);
+	}
+
 	/* reset the controller */
 	musb_writel(tibase, DAVINCI_USB_CTRL_REG, 0x1);
 
@@ -437,6 +453,15 @@ int musb_platform_exit(struct musb *musb)
 	if (is_host_enabled(musb))
 		del_timer_sync(&otg_workaround);
 
+	/* force VBUS off */
+	if (cpu_is_davinci_dm355()) {
+		u32	deepsleep = __raw_readl(DM355_DEEPSLEEP);
+
+		deepsleep &= ~DRVVBUS_FORCE;
+		deepsleep |= DRVVBUS_OVERRIDE;
+		__raw_writel(deepsleep, DM355_DEEPSLEEP);
+	}
+
 	davinci_source_power(musb, 0 /*off*/, 1);
 
 	/* delay, to avoid problems with module reload */