From 3c5aa754de9c9e572232b469398a981dccfff127 Mon Sep 17 00:00:00 2001
From: Cástor Muñoz <cmvidal@gmail.com>
Date: Sun, 31 Jul 2016 03:40:32 +0200
Subject: iPod Classic: use the new USB DesignWare driver

Change-Id: I36aabb5cb9cfe2d8c4f8fbcea944efec58ef9671
---
 firmware/target/arm/s5l8702/usb-s5l8702.c | 137 ++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 firmware/target/arm/s5l8702/usb-s5l8702.c

(limited to 'firmware/target/arm/s5l8702/usb-s5l8702.c')

diff --git a/firmware/target/arm/s5l8702/usb-s5l8702.c b/firmware/target/arm/s5l8702/usb-s5l8702.c
new file mode 100644
index 0000000000..7a349f74f4
--- /dev/null
+++ b/firmware/target/arm/s5l8702/usb-s5l8702.c
@@ -0,0 +1,137 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Copyright (C) 2014 Michael Sparmann
+*
+* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+* KIND, either express or implied.
+*
+****************************************************************************/
+#include <inttypes.h>
+
+#include "config.h"
+#include "usb.h"
+#include "usb_drv.h"
+#ifdef HAVE_USBSTACK
+#include "usb_core.h"
+#endif
+
+#include "s5l8702.h"
+#include "clocking-s5l8702.h"
+#include "usb-designware.h"
+
+
+const struct usb_dw_config usb_dw_config =
+{
+    .phytype = DWC_PHYTYPE_UTMI_16,
+
+    /* Available FIFO memory: 0x820 words */
+    .rx_fifosz   = 0x360,
+    .nptx_fifosz = 0x40,   /* 1 dedicated FIFO for IN0 */
+    .ptx_fifosz  = 0x180,  /* 3 dedicated FIFOs for IN1,IN3,IN5 */
+
+#ifdef USB_DW_ARCH_SLAVE
+    .disable_double_buffering = false,
+#else
+    .ahb_burst_len = HBSTLEN_INCR8,
+    .ahb_threshold = 8,
+#endif
+};
+
+void usb_dw_target_enable_clocks()
+{
+    clockgate_enable(CLOCKGATE_USBOTG, true);
+    clockgate_enable(CLOCKGATE_USBPHY, true);
+
+    OPHYPWR = 0;  /* PHY: Power up */
+    udelay(10);
+    OPHYUNK1 = 1;
+    OPHYUNK2 = 0xe3f;
+    ORSTCON = 1;  /* PHY: Assert Software Reset */
+    udelay(10);
+    ORSTCON = 0;  /* PHY: Deassert Software Reset */
+    udelay(10);
+    OPHYUNK3 = 0x600;
+    OPHYCLK = USB_DW_CLOCK;
+    udelay(400);
+}
+
+void usb_dw_target_disable_clocks()
+{
+    OPHYPWR = 0xf;  /* PHY: Power down */
+    udelay(10);
+    ORSTCON = 7;  /* PHY: Assert Software Reset */
+    udelay(10);
+
+    clockgate_enable(CLOCKGATE_USBOTG, false);
+    clockgate_enable(CLOCKGATE_USBPHY, false);
+}
+
+void usb_dw_target_enable_irq()
+{
+    VICINTENABLE(IRQ_USB_FUNC >> 5) = 1 << (IRQ_USB_FUNC & 0x1f);
+}
+
+void usb_dw_target_disable_irq()
+{
+    VICINTENCLEAR(IRQ_USB_FUNC >> 5) = 1 << (IRQ_USB_FUNC & 0x1f);
+}
+
+void usb_dw_target_clear_irq()
+{
+}
+
+/* RB API */
+static int usb_status = USB_EXTRACTED;
+
+void usb_enable(bool on)
+{
+#ifdef HAVE_USBSTACK
+    if (on) usb_core_init();
+    else usb_core_exit();
+#else
+    (void)on;
+#endif
+}
+
+int usb_detect(void)
+{
+    return usb_status;
+}
+
+void usb_insert_int(void)
+{
+    usb_status = USB_INSERTED;
+#ifdef USB_STATUS_BY_EVENT
+    usb_status_event(USB_INSERTED);
+#endif
+}
+
+void usb_remove_int(void)
+{
+    usb_status = USB_EXTRACTED;
+#ifdef USB_STATUS_BY_EVENT
+    usb_status_event(USB_EXTRACTED);
+#endif
+}
+
+void usb_init_device(void)
+{
+    /* Power up the core clocks to allow writing
+       to some registers needed to power it down */
+    usb_dw_target_disable_irq();
+    usb_dw_target_enable_clocks();
+
+    usb_drv_exit();
+}
-- 
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