From 4d4a945e189a2f384c66432316da2788a0ac1607 Mon Sep 17 00:00:00 2001
From: Rodolfo Giometti <giometti@enneenne.com>
Date: Mon, 15 Oct 2007 11:59:17 +0200
Subject: [PATCH] PXA USB OHCI: "usb stop" implementation.
Some USB keys need to be switched off before loading the kernel
otherwise they can remain in an undefined status which prevents them
to be correctly recognized by the kernel.
Signed-off-by: Rodolfo Giometti <giometti@linux.it>
---
cpu/pxa/usb.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/cpu/pxa/usb.c b/cpu/pxa/usb.c
index 65f457fe59..3c11d4de44 100644
--- a/cpu/pxa/usb.c
+++ b/cpu/pxa/usb.c
@@ -67,6 +67,22 @@ int usb_cpu_init()
int usb_cpu_stop()
{
+ UHCHR |= UHCHR_FHR;
+ udelay(11);
+ UHCHR &= ~UHCHR_FHR;
+
+ UHCCOMS |= 1;
+ udelay(10);
+
+#if defined(CONFIG_CPU_MONAHANS)
+ UHCHR |= UHCHR_SSEP0;
+#endif
+#if defined(CONFIG_PXA27X)
+ UHCHR |= UHCHR_SSEP2;
+#endif
+ UHCHR |= UHCHR_SSEP1;
+ UHCHR |= UHCHR_SSE;
+
return 0;
}
--
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