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authorSimon Glass <sjg@chromium.org>2012-02-27 10:52:49 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-03-29 08:12:48 +0200
commit87f938c9f7372f587a43fe7babcb171ee0a0672f (patch)
tree2d38fe21ff471e541fad7ae8cbfca9fd0b086280 /drivers/usb/host/ehci-tegra.c
parented2974493e838399eacd4bf88f38b215955688a8 (diff)
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tegra: usb: Add support for Tegra USB peripheral
This adds basic support for the Tegra2 USB controller. Board files should call board_usb_init() to set things up. Configuration is performed through the FDT, with aliases used to set the order of the ports, like this fragment: aliases { /* This defines the order of our USB ports */ usb0 = "/usb@0xc5008000"; usb1 = "/usb@0xc5000000"; }; drivers/usb/host files ONLY: Acked-by: Remy Bohmer <linux@bohmer.net> Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'drivers/usb/host/ehci-tegra.c')
-rw-r--r--drivers/usb/host/ehci-tegra.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
new file mode 100644
index 0000000..a7e105b
--- /dev/null
+++ b/drivers/usb/host/ehci-tegra.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2009 NVIDIA Corporation
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <usb.h>
+
+#include "ehci.h"
+#include "ehci-core.h"
+
+#include <asm/errno.h>
+#include <asm/arch/usb.h>
+
+
+/*
+ * Create the appropriate control structures to manage
+ * a new EHCI host controller.
+ */
+int ehci_hcd_init(void)
+{
+ u32 our_hccr, our_hcor;
+
+ /*
+ * Select the first port, as we don't have a way of selecting others
+ * yet
+ */
+ if (tegrausb_start_port(0, &our_hccr, &our_hcor))
+ return -1;
+
+ hccr = (struct ehci_hccr *)our_hccr;
+ hcor = (struct ehci_hcor *)our_hcor;
+
+ return 0;
+}
+
+/*
+ * Destroy the appropriate control structures corresponding
+ * the the EHCI host controller.
+ */
+int ehci_hcd_stop(void)
+{
+ tegrausb_stop_port();
+ return 0;
+}