From ef572fec523c3064cbec8df3ef7610a2a9b5df54 Mon Sep 17 00:00:00 2001
From: Cástor Muñoz <cmvidal@gmail.com>
Date: Sun, 31 Jul 2016 03:48:11 +0200
Subject: iPod Nano 2G: use the new USB DesignWare driver

Change-Id: I8d1561bf4e239b55617a8d5075457a668e0c312c
---
 firmware/target/arm/s5l8700/usb-s5l8701.c | 138 ++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 firmware/target/arm/s5l8700/usb-s5l8701.c

(limited to 'firmware/target/arm/s5l8700/usb-s5l8701.c')

diff --git a/firmware/target/arm/s5l8700/usb-s5l8701.c b/firmware/target/arm/s5l8700/usb-s5l8701.c
new file mode 100644
index 0000000000..860f54b2d8
--- /dev/null
+++ b/firmware/target/arm/s5l8700/usb-s5l8701.c
@@ -0,0 +1,138 @@
+/***************************************************************************
+*             __________               __   ___.
+*   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"
+#include "power.h"
+#endif
+
+#include "s5l8700.h"
+#include "usb-designware.h"
+
+
+const struct usb_dw_config usb_dw_config =
+{
+    /* PHY must run at 60MHz, otherwise there are spurious -EPROTO
+       errors, probably related with GHWCFG4_MIN_AHB_FREQ. */
+    .phytype = DWC_PHYTYPE_UTMI_8,
+
+    /*
+     * Total available FIFO memory: 0x500 words.
+     */
+    .rx_fifosz   = 0x220,
+    /* nptx_fifosz seems limited to 0x200 due to some internal counter
+       misbehaviour (TBC). */
+    .nptx_fifosz = 0x200,
+    /* ptx_fifosz is not writeable (fixed to 0x300), anyway it seems
+       internally limited to a small number, aroung 0x10..0x20 (TBC),
+       we use_ptxfifo_as_plain_buffer to deal with this issue. */
+    .ptx_fifosz  = 0x80,
+    .use_ptxfifo_as_plain_buffer = true,
+
+#ifdef USB_DW_ARCH_SLAVE
+    .disable_double_buffering = false,
+#else
+    .ahb_burst_len = HBSTLEN_INCR4,
+#endif
+};
+
+void usb_dw_target_enable_clocks()
+{
+    PWRCON &= ~0x4000;
+    PWRCONEXT &= ~0x800;
+
+    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);
+
+    PWRCON |= 0x4000;
+    PWRCONEXT |= 0x800;
+}
+
+void usb_dw_target_enable_irq()
+{
+    INTMSK |= INTMSK_USB_OTG;
+}
+
+void usb_dw_target_disable_irq()
+{
+    INTMSK &= ~INTMSK_USB_OTG;
+}
+
+void usb_dw_target_clear_irq()
+{
+    SRCPND |= INTMSK_USB_OTG;
+}
+
+/* RB API fuctions */
+void usb_enable(bool on)
+{
+#ifdef HAVE_USBSTACK
+    if (on){
+        cpu_boost(1);
+        usb_core_init();
+    } else {
+        usb_core_exit();
+        cpu_boost(0);
+    }
+#else
+    (void)on;
+#endif
+}
+
+int usb_detect(void)
+{
+#ifdef HAVE_USBSTACK
+    if (power_input_status() & POWER_INPUT_USB)
+        return USB_INSERTED;
+#endif
+    return USB_EXTRACTED;
+}
+
+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();
+}
-- 
cgit v1.2.3