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 180d7daa4099d50231f81f92c8ce537ab72dcbcc..658ae4e83f6ab21a5c56c82c2851fe69c39afe78 100644 (file)
--- 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 */