From 3a6d4791d70fc9f4adad7a0cbc1b808b7c942652 Mon Sep 17 00:00:00 2001
From: Barry Wardell <rockbox@barrywardell.net>
Date: Fri, 16 Feb 2007 22:13:21 +0000
Subject: No functional changes, just reorganising code: 1) Move ARC OTG USB
 (used in PP502x) driver code into it's own file, drivers/arcotg_udc.c.
 Hopefully in  the future we will be able to adapt more of the Linux driver
 and add it to this file. 2) Rename mx31.h to arcotg_udc.h to reflect the file
 the code came from. It's also a more accurate name for the USB controller. 3)
 Get rid of one more inl()/outl() in usb-pp.c and use the relevant #define
 instead. 4) Add dr_controller_stop(). Not used yet.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12340 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/drivers/arcotg_udc.c | 135 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 firmware/drivers/arcotg_udc.c

(limited to 'firmware/drivers/arcotg_udc.c')

diff --git a/firmware/drivers/arcotg_udc.c b/firmware/drivers/arcotg_udc.c
new file mode 100644
index 0000000000..d39dbc39df
--- /dev/null
+++ b/firmware/drivers/arcotg_udc.c
@@ -0,0 +1,135 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2007 by Barry Wardell
+ *
+ * Based on code from the Linux Target Image Builder from Freescale
+ * available at http://www.bitshrine.org/ and
+ * http://www.bitshrine.org/gpp/linux-2.6.16-mx31-usb-2.patch
+ * Adapted for Rockbox in January 2007
+ * Original file: drivers/usb/gadget/arcotg_udc.c
+ *
+ * USB Device Controller Driver
+ * Driver for ARC OTG USB module in the i.MX31 platform, etc.
+ *
+ * Copyright 2004-2006 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * Based on mpc-udc.h
+ * Author: Li Yang (leoli@freescale.com)
+ *         Jiang Bo (Tanya.jiang@freescale.com)
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "arcotg_udc.h"
+#include "logf.h"
+
+static int timeout;
+
+/* @qh_addr is the aligned virt addr of ep QH addr
+ * it is used to set endpointlistaddr Reg */
+/* was static int dr_controller_setup(void *qh_addr) */
+int dr_controller_setup(void)
+{
+#if 0
+    struct arc_usb_config *config;
+
+    config = udc_controller->config;
+
+    /* before here, make sure usb_slave_regs has been initialized */
+    if (!qh_addr)
+        return -EINVAL;
+#endif
+
+    /* Stop and reset the usb controller */
+    UDC_USBCMD &= ~USB_CMD_RUN_STOP;
+
+    UDC_USBCMD |= USB_CMD_CTRL_RESET;
+
+    /* Wait for reset to complete */
+    timeout = 10000000;
+    while ((UDC_USBCMD & USB_CMD_CTRL_RESET) &&
+           --timeout) {
+        continue;
+    }
+    if (timeout == 0) {
+        logf("%s: TIMEOUT", __FUNCTION__);
+        return -ETIMEDOUT;
+    }
+
+    /* Set the controller as device mode and disable setup lockout */
+    UDC_USBMODE |= (USB_MODE_CTRL_MODE_DEVICE | USB_MODE_SETUP_LOCK_OFF);
+
+    /* Clear the setup status */
+    UDC_USBSTS = 0;
+#if 0
+    UDC_ENDPOINTLISTADDR = (unsigned int)qh_addr & USB_EP_LIST_ADDRESS_MASK;
+    
+    VDBG("qh_addr=0x%x epla_reg=0x%8x", qh_addr, UOG_ASYNCLISTADDR);
+#endif
+    UDC_PORTSC1 = (UDC_PORTSC1 & ~PORTSCX_PHY_TYPE_SEL) | PORTSCX_PTS_UTMI;
+#if 0
+    if (config->set_vbus_power)
+        config->set_vbus_power(0);
+#endif
+
+    return 0;
+}
+
+/* just Enable DR irq reg and Set Dr controller Run */
+/* was static void dr_controller_run(struct arcotg_udc *udc) */
+void dr_controller_run(void)
+{
+    /*Enable DR irq reg */
+    UDC_USBINTR = USB_INTR_INT_EN | USB_INTR_ERR_INT_EN |
+          USB_INTR_PTC_DETECT_EN | USB_INTR_RESET_EN |
+          USB_INTR_DEVICE_SUSPEND | USB_INTR_SYS_ERR_EN;
+#if 0
+    /* Clear stopped bit */
+    udc->stopped = 0;
+#endif
+    /* Set the controller as device mode */
+    UDC_USBMODE |= USB_MODE_CTRL_MODE_DEVICE;
+
+    /* Set controller to Run */
+    UDC_USBCMD |= USB_CMD_RUN_STOP;
+
+    return;
+}
+
+/* just Enable DR irq reg and Set Dr controller Run */
+/* was static void dr_controller_stop(struct arcotg_udc *udc) */
+void dr_controller_stop(void)
+{
+#if 0
+   /* if we're in OTG mode, and the Host is currently using the port,
+    * stop now and don't rip the controller out from under the
+    * ehci driver
+    */
+   if (udc->gadget.is_otg) {
+       if (!(UDC_OTGSC & OTGSC_STS_USB_ID)) {
+           logf("Leaving early");
+           return;
+       }
+   }
+#endif
+
+    /* disable all INTR */
+    UDC_USBINTR = 0;
+#if 0
+    /* Set stopped bit */
+    udc->stopped = 1;
+#endif
+    /* Set controller to Stop */
+    UDC_USBCMD &= ~USB_CMD_RUN_STOP;
+}
-- 
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