[PATCH 1/9 v1.01] Add Synopsys DesignWare HS USB OTG Controller driver.
Fushen Chen
fchen at apm.com
Tue Jul 13 09:16:36 EST 2010
The DWC OTG driver module provides the initialization and cleanup
entry points for the DWC OTG USB driver.
Signed-off-by: Fushen Chen <fchen at apm.com>
Signed-off-by: Mark Miesfeld <mmiesfeld at apm.com>
---
drivers/usb/gadget/Kconfig | 32 +-
drivers/usb/gadget/gadget_chips.h | 7 +
drivers/usb/otg/Kconfig | 87 +++
drivers/usb/otg/Makefile | 10 +
drivers/usb/otg/dwc_otg_driver.c | 1238 +++++++++++++++++++++++++++++++++++++
drivers/usb/otg/dwc_otg_driver.h | 97 +++
6 files changed, 1455 insertions(+), 16 deletions(-)
create mode 100644 drivers/usb/otg/dwc_otg_driver.c
create mode 100644 drivers/usb/otg/dwc_otg_driver.h
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index dd3b251..130626a 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -109,8 +109,8 @@ config USB_GADGET_SELECTED
# - discrete ones (including all PCI-only controllers)
# - debug/dummy gadget+hcd is last.
#
-choice
- prompt "USB Peripheral Controller"
+menuconfig USB_PERIPHERAL_CONTROLLER
+ bool "USB Peripheral Controller"
depends on USB_GADGET
help
A USB device uses a controller to talk to its host.
@@ -122,6 +122,8 @@ choice
# Integrated controllers
#
+if USB_PERIPHERAL_CONTROLLER
+
config USB_GADGET_AT91
boolean "Atmel AT91 USB Device Port"
depends on ARCH_AT91 && !ARCH_AT91SAM9RL && !ARCH_AT91CAP9 && !ARCH_AT91SAM9G45
@@ -542,7 +544,7 @@ config USB_DUMMY_HCD
# NOTE: Please keep dummy_hcd LAST so that "real hardware" appears
# first and will be selected by default.
-endchoice
+endif # USB_PERIPHERAL_CONTROLLER
config USB_GADGET_DUALSPEED
bool
@@ -714,7 +716,6 @@ config USB_GADGETFS
config USB_FUNCTIONFS
tristate "Function Filesystem (EXPERIMENTAL)"
depends on EXPERIMENTAL
- select USB_FUNCTIONFS_GENERIC if !(USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS)
help
The Function Filesystem (FunctioFS) lets one create USB
composite functions in user space in the same way as GadgetFS
@@ -723,31 +724,31 @@ config USB_FUNCTIONFS
implemented in kernel space (for instance Ethernet, serial or
mass storage) and other are implemented in user space.
- If you say "y" or "m" here you will be able what kind of
- configurations the gadget will provide.
-
Say "y" to link the driver statically, or "m" to build
a dynamically linked module called "g_ffs".
config USB_FUNCTIONFS_ETH
- bool "Include configuration with CDC ECM (Ethernet)"
+ bool "Include CDC ECM (Ethernet) function"
depends on USB_FUNCTIONFS && NET
help
- Include a configuration with CDC ECM funcion (Ethernet) and the
- Funcion Filesystem.
+ Include an CDC ECM (Ethernet) funcion in the CDC ECM (Funcion)
+ Filesystem. If you also say "y" to the RNDIS query below the
+ gadget will have two configurations.
config USB_FUNCTIONFS_RNDIS
- bool "Include configuration with RNDIS (Ethernet)"
+ bool "Include RNDIS (Ethernet) function"
depends on USB_FUNCTIONFS && NET
help
- Include a configuration with RNDIS funcion (Ethernet) and the Filesystem.
+ Include an RNDIS (Ethernet) funcion in the Funcion Filesystem.
+ If you also say "y" to the CDC ECM query above the gadget will
+ have two configurations.
config USB_FUNCTIONFS_GENERIC
bool "Include 'pure' configuration"
- depends on USB_FUNCTIONFS
+ depends on USB_FUNCTIONFS && (USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS)
help
- Include a configuration with the Function Filesystem alone with
- no Ethernet interface.
+ Include a configuration with FunctionFS and no Ethernet
+ configuration.
config USB_FILE_STORAGE
tristate "File-backed Storage Gadget"
@@ -864,7 +865,6 @@ config USB_G_NOKIA
config USB_G_MULTI
tristate "Multifunction Composite Gadget (EXPERIMENTAL)"
depends on BLOCK && NET
- select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS
help
The Multifunction Composite Gadget provides Ethernet (RNDIS
and/or CDC Ethernet), mass storage and ACM serial link
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index e511fec..c0dec12 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -142,6 +142,11 @@
#define gadget_is_s3c_hsotg(g) 0
#endif
+#if defined(CONFIG_DWC_OTG_MODE) || defined(CONFIG_DWC_DEVICE_ONLY)
+#define gadget_is_dwc_otg_pcd(g) (!strcmp("dwc_otg_pcd", (g)->name))
+#else
+#define gadget_is_dwc_otg_pcd(g) 0
+#endif
/**
* usb_gadget_controller_number - support bcdDevice id convention
@@ -200,6 +205,8 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
return 0x25;
else if (gadget_is_s3c_hsotg(gadget))
return 0x26;
+ else if (gadget_is_dwc_otg_pcd(gadget))
+ return 0x27;
return -ENOENT;
}
diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig
index 3d2d3e5..745bac2 100644
--- a/drivers/usb/otg/Kconfig
+++ b/drivers/usb/otg/Kconfig
@@ -69,4 +69,91 @@ config NOP_USB_XCEIV
built-in with usb ip or which are autonomous and doesn't require any
phy programming such as ISP1x04 etc.
+config USB_DWC_OTG
+ depends on (USB || USB_GADGET)
+ depends on 405EZ || 405EX || 460EX
+ select USB_OTG_UTILS
+ tristate "Synopsys DWC OTG Controller"
+ default USB_GADGET
+ help
+ This driver provides USB Device Controller support for the
+ Synopsys DesignWare USB OTG Core used on the AMCC 405EZ/405EX/
+ 460EX.
+
+ Note that on the 405EZ, this Core provides USB Device Controller
+ function only. It does not act as a true OTG device, and the
+ 'OTG' is slightly misleading.
+
+config DWC_LEGACY_405EX
+ bool "Enable 405EX Legacy Support (lower performance)"
+ default n
+ depends on USB_DWC_OTG && 405EX
+ select DWC_SLAVE
+ help
+ Enable Legacy 405EX Chip support (Rev 1.0) where DWC DMA is broken
+ Selecting this option will cause lower performance
+ Don't select this unless you want to support Rev 1.0 405EX chips (obsolete)
+
+config DWC_DEBUG
+ bool "Enable DWC Debugging"
+ depends on USB_DWC_OTG
+ default n
+ help
+ Enable DWC driver debugging
+
+choice
+ prompt "DWC Mode Selection"
+ depends on USB_DWC_OTG
+ default DWC_OTG_MODE
+ help
+ Select the DWC Core in OTG, Host only, or Device only mode
+
+config DWC_OTG_MODE
+ bool "DWC OTG Mode" if 405EX || 460EX
+ select USB_GADGET_SELECTED
+
+config DWC_HOST_ONLY
+ bool "DWC Host Only Mode" if 405EX || 460EX
+
+config DWC_DEVICE_ONLY
+ bool "DWC Device Only Mode"
+ select USB_GADGET_SELECTED
+
+endchoice
+
+choice
+ prompt "DWC DMA/SlaveMode Selection"
+ depends on USB_DWC_OTG
+ default DWC_DMA_MODE
+ help
+ Select the DWC DMA or Slave Mode
+ DMA mode uses the DWC DMA engines
+ Slave mode uses the processor to tranfer data
+ In Slave mode, processor DMA channels can be used if available
+
+config DWC_SLAVE
+ bool "DWC Slave Mode" if 405EX || 460EX
+
+config DWC_DMA_MODE
+ bool "DWC DMA Mode" if 405EX || (460EX && (!USB_EHCI_HCD || !USB_OHCI_HCD))
+
+endchoice
+
+config DWC_OTG_REG_LE
+ depends on USB_DWC_OTG
+ bool "DWC Big Endian Register" if 405EX || 460EX
+ default y
+
+config DWC_OTG_FIFO_LE
+ depends on USB_DWC_OTG
+ bool "DWC FIFO Little Endian" if 405EZ
+ default n
+
+config DWC_LIMITED_XFER_SIZE
+ depends on USB_DWC_OTG
+ bool "DWC Endpoint Limited Xfer Size" if 405EZ
+ default n
+
+
+
endif # USB || OTG
diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile
index aeb49a8..d5dc51f 100644
--- a/drivers/usb/otg/Makefile
+++ b/drivers/usb/otg/Makefile
@@ -15,3 +15,13 @@ obj-$(CONFIG_USB_ULPI) += ulpi.o
ccflags-$(CONFIG_USB_DEBUG) += -DDEBUG
ccflags-$(CONFIG_USB_GADGET_DEBUG) += -DDEBUG
+obj-$(CONFIG_USB_DWC_OTG) += dwc_otg.o
+
+dwc_otg-objs := dwc_otg_driver.o dwc_otg_cil.o dwc_otg_cil_intr.o
+ifneq ($(CONFIG_DWC_DEVICE_ONLY),y)
+dwc_otg-objs += dwc_otg_hcd.o dwc_otg_hcd_intr.o \
+ dwc_otg_hcd_queue.o
+endif
+ifneq ($(CONFIG_DWC_HOST_ONLY),y)
+dwc_otg-objs += dwc_otg_pcd.o dwc_otg_pcd_intr.o
+endif
diff --git a/drivers/usb/otg/dwc_otg_driver.c b/drivers/usb/otg/dwc_otg_driver.c
new file mode 100644
index 0000000..632de1f
--- /dev/null
+++ b/drivers/usb/otg/dwc_otg_driver.c
@@ -0,0 +1,1238 @@
+/*
+ * DesignWare HS OTG controller driver
+ *
+ * Author: Mark Miesfeld <mmiesfeld at apm.com>
+ *
+ * Based on versions provided by AMCC and Synopsis which are:
+ * Copyright (C) 2009-2010 AppliedMicro(www.apm.com)
+ * Modified by Stefan Roese <sr at denx.de>, DENX Software Engineering
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * The dwc_otg_driver module provides the initialization and cleanup entry
+ * points for the DWC_otg driver. This module will be dynamically installed
+ * after Linux is booted using the insmod command. When the module is
+ * installed, the dwc_otg_driver_init function is called. When the module is
+ * removed (using rmmod), the dwc_otg_driver_cleanup function is called.
+ *
+ * This module also defines a data structure for the dwc_otg_driver, which is
+ * used in conjunction with the standard device structure. These
+ * structures allow the OTG driver to comply with the standard Linux driver
+ * model in which devices and drivers are registered with a bus driver. This
+ * has the benefit that Linux can expose attributes of the driver and device
+ * in its special sysfs file system. Users can then read or write files in
+ * this file system to perform diagnostics on the driver components or the
+ * device.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/stat.h> /* permission constants */
+#include <linux/of_platform.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+
+#include "dwc_otg_driver.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_pcd.h"
+#include "dwc_otg_hcd.h"
+
+/* Based on Synopsys driver version 2.60a */
+#define DWC_DRIVER_VERSION "1.01"
+#define DWC_DRIVER_DESC "HS OTG USB Controller driver"
+static const char dwc_driver_name[] = "dwc_otg";
+
+/*
+ * Encapsulate the module parameter settings
+ */
+static struct core_params dwc_otg_module_params = {
+ .opt = -1,
+ .otg_cap = -1,
+ .dma_enable = -1,
+ .dma_burst_size = -1,
+ .speed = -1,
+ .host_support_fs_ls_low_power = -1,
+ .host_ls_low_power_phy_clk = -1,
+ .enable_dynamic_fifo = -1,
+ .data_fifo_size = -1,
+ .dev_rx_fifo_size = -1,
+ .dev_nperio_tx_fifo_size = -1,
+ .dev_perio_tx_fifo_size = {
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+ }, /* 15 */
+ .host_rx_fifo_size = -1,
+ .host_nperio_tx_fifo_size = -1,
+ .host_perio_tx_fifo_size = -1,
+ .max_transfer_size = -1,
+ .max_packet_count = -1,
+ .host_channels = -1,
+ .dev_endpoints = -1,
+ .phy_type = -1,
+ .phy_utmi_width = -1,
+ .phy_ulpi_ddr = -1,
+ .phy_ulpi_ext_vbus = -1,
+ .i2c_enable = -1,
+ .ulpi_fs_ls = -1,
+ .ts_dline = -1,
+ .en_multiple_tx_fifo = -1,
+ .dev_tx_fifo_size = {
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+ }, /* 15 */
+ .thr_ctl = -1,
+ .tx_thr_length = -1,
+ .rx_thr_length = -1,
+};
+
+/* Global Debug Level Mask. */
+u32 g_dbg_lvl = 0x0; /* OFF */
+
+/**
+ * Determines if the OTG capability parameter is valid under the current
+ * hardware configuration.
+ */
+static int is_valid_otg_cap(struct core_if *core_if)
+{
+ int valid = 1;
+
+ switch (dwc_otg_module_params.otg_cap) {
+ case DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE:
+ if (core_if->hwcfg2.b.op_mode !=
+ DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
+ valid = 0;
+ break;
+ case DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE:
+ if (core_if->hwcfg2.b.op_mode !=
+ DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG &&
+ core_if->hwcfg2.b.op_mode !=
+ DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG &&
+ core_if->hwcfg2.b.op_mode !=
+ DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE &&
+ core_if->hwcfg2.b.op_mode !=
+ DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)
+ valid = 0;
+ break;
+ case DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE:
+ /* always valid */
+ break;
+ }
+ return valid;
+}
+
+/**
+ * Returns a valid OTG capability setting for the current hardware
+ * configuration.
+ */
+static int get_valid_otg_cap(struct core_if *core_if)
+{
+ if (core_if->hwcfg2.b.op_mode ==
+ DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG ||
+ core_if->hwcfg2.b.op_mode ==
+ DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG ||
+ core_if->hwcfg2.b.op_mode ==
+ DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE ||
+ core_if->hwcfg2.b.op_mode ==
+ DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)
+ return DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE;
+ else
+ return DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE;
+}
+
+/**
+ * Checks that, if the user set a periodic Tx FIFO size parameter, the size is
+ * within the valid range. If not, the parameter is set to the default.
+ */
+static int chk_param_perio_tx_fifo_sizes(int retval)
+{
+ u32 *s = &dwc_otg_module_params.dev_perio_tx_fifo_size[0];
+ u32 i;
+
+ for (i = 0; i < MAX_PERIO_FIFOS; i++, s++) {
+ if (*s != -1 && (*s < 4 || *s > 768)) {
+ printk(KERN_ERR "`%d' invalid for parameter "
+ "`dev_perio_tx_fifo_size_%d'\n", *s, i);
+
+ *s = dwc_param_dev_perio_tx_fifo_size_default;
+ retval++;
+ }
+ }
+ return retval;
+}
+
+/**
+ * Checks that, if the user set a Tx FIFO size parameter, the size is within the
+ * valid range. If not, the parameter is set to the default.
+ */
+static int chk_param_tx_fifo_sizes(int retval)
+{
+ u32 *s = &dwc_otg_module_params.dev_tx_fifo_size[0];
+ u32 i;
+
+ for (i = 0; i < MAX_TX_FIFOS; i++, s++) {
+ if (*s != -1 && (*s < 4 || *s > 768)) {
+ printk(KERN_ERR "`%d' invalid for parameter "
+ "`dev_perio_tx_fifo_size_%d'\n", *s, i);
+
+ *s = dwc_param_dev_tx_fifo_size_default;
+ retval++;
+ }
+ }
+ return retval;
+}
+
+/**
+ * Checks that parameter settings for the periodic Tx FIFO sizes are correct
+ * according to the hardware configuration. Sets the size to the hardware
+ * configuration if an incorrect size is detected.
+ */
+static int chk_valid_perio_tx_fifo_sizes(struct core_if *core_if, int retval)
+{
+ struct core_global_regs *regs = core_if->core_global_regs;
+ u32 *param_size = &dwc_otg_module_params.dev_perio_tx_fifo_size[0];
+ u32 i;
+
+ for (i = 0; i < MAX_PERIO_FIFOS; i++, param_size++) {
+ int changed = 1;
+ int error = 0;
+ u32 size;
+
+ if (*param_size == -1) {
+ changed = 0;
+ *param_size = dwc_param_dev_perio_tx_fifo_size_default;
+ }
+
+ size = dwc_read_reg32(®s->dptxfsiz_dieptxf[i]);
+ if (*param_size > size) {
+ if (changed) {
+ printk(KERN_ERR "%d' invalid for parameter "
+ "`dev_perio_tx_fifo_size_%d'. Check HW "
+ "configuration.\n", *param_size, i);
+ error = 1;
+ }
+ *param_size = size;
+ }
+ retval += error;
+ }
+ return retval;
+}
+
+/**
+ * Checks that parameter settings for the Tx FIFO sizes are correct according to
+ * the hardware configuration. Sets the size to the hardware configuration if
+ * an incorrect size is detected.
+ */
+static int chk_valid_tx_fifo_sizes(struct core_if *core_if, int retval)
+{
+ struct core_global_regs *regs = core_if->core_global_regs;
+ u32 *param_size = &dwc_otg_module_params.dev_tx_fifo_size[0];
+ u32 i;
+
+ for (i = 0; i < MAX_TX_FIFOS; i++, param_size) {
+ int changed = 1;
+ int error = 0;
+ u32 size;
+
+ if (*param_size == -1) {
+ changed = 0;
+ *param_size = dwc_param_dev_tx_fifo_size_default;
+ }
+
+ size = dwc_read_reg32(®s->dptxfsiz_dieptxf[i]);
+ if (*param_size > size) {
+ if (changed) {
+ printk(KERN_ERR "%d' invalid for parameter "
+ "`dev_tx_fifo_size_%d'. Check HW "
+ "configuration.\n", *param_size, i);
+ error = 1;
+ }
+ *param_size = size;
+ }
+ retval += error;
+ }
+ return retval;
+}
+
+/**
+ * This function is called during module intialization to verify that
+ * the module parameters are in a valid state.
+ */
+static int __devinit check_parameters(struct core_if *core_if)
+{
+ int retval = 0;
+
+ /* Checks if the parameter is outside of its valid range of values */
+#define DWC_OTG_PARAM_TEST(_param_, _low_, _high_) \
+ ((dwc_otg_module_params._param_ < (_low_)) || \
+ (dwc_otg_module_params._param_ > (_high_)))
+
+ /*
+ * If the parameter has been set by the user, check that the parameter
+ * value is within the value range of values. If not, report a module
+ * error.
+ */
+#define DWC_OTG_PARAM_ERR(_param_, _low_, _high_, _string_) \
+ do { \
+ if (dwc_otg_module_params._param_ != -1) { \
+ if (DWC_OTG_PARAM_TEST(_param_, (_low_), (_high_))) { \
+ printk(KERN_ERR "`%d' invalid for parameter " \
+ "`%s'\n", \
+ dwc_otg_module_params._param_, \
+ _string_); \
+ dwc_otg_module_params._param_ = \
+ dwc_param_##_param_##_default; \
+ retval++; \
+ } \
+ } \
+ } while (0)
+
+ DWC_OTG_PARAM_ERR(opt, 0, 1, "opt");
+ DWC_OTG_PARAM_ERR(otg_cap, 0, 2, "otg_cap");
+ DWC_OTG_PARAM_ERR(dma_enable, 0, 1, "dma_enable");
+ DWC_OTG_PARAM_ERR(speed, 0, 1, "speed");
+
+ DWC_OTG_PARAM_ERR(host_support_fs_ls_low_power, 0, 1,
+ "host_support_fs_ls_low_power");
+ DWC_OTG_PARAM_ERR(host_ls_low_power_phy_clk, 0, 1,
+ "host_ls_low_power_phy_clk");
+
+ DWC_OTG_PARAM_ERR(enable_dynamic_fifo, 0, 1, "enable_dynamic_fifo");
+ DWC_OTG_PARAM_ERR(data_fifo_size, 32, 32768, "data_fifo_size");
+ DWC_OTG_PARAM_ERR(dev_rx_fifo_size, 16, 32768, "dev_rx_fifo_size");
+ DWC_OTG_PARAM_ERR(dev_nperio_tx_fifo_size, 16, 32768,
+ "dev_nperio_tx_fifo_size");
+ DWC_OTG_PARAM_ERR(host_rx_fifo_size, 16, 32768, "host_rx_fifo_size");
+ DWC_OTG_PARAM_ERR(host_nperio_tx_fifo_size, 16, 32768,
+ "host_nperio_tx_fifo_size");
+ DWC_OTG_PARAM_ERR(host_perio_tx_fifo_size, 16, 32768,
+ "host_perio_tx_fifo_size");
+
+ DWC_OTG_PARAM_ERR(max_transfer_size, 2047, 524288,
+ "max_transfer_size");
+ DWC_OTG_PARAM_ERR(max_packet_count, 15, 511, "max_packet_count");
+
+ DWC_OTG_PARAM_ERR(host_channels, 1, 16, "host_channels");
+ DWC_OTG_PARAM_ERR(dev_endpoints, 1, 15, "dev_endpoints");
+
+ DWC_OTG_PARAM_ERR(phy_type, 0, 2, "phy_type");
+ DWC_OTG_PARAM_ERR(phy_ulpi_ddr, 0, 1, "phy_ulpi_ddr");
+ DWC_OTG_PARAM_ERR(phy_ulpi_ext_vbus, 0, 1, "phy_ulpi_ext_vbus");
+ DWC_OTG_PARAM_ERR(i2c_enable, 0, 1, "i2c_enable");
+ DWC_OTG_PARAM_ERR(ulpi_fs_ls, 0, 1, "ulpi_fs_ls");
+ DWC_OTG_PARAM_ERR(ts_dline, 0, 1, "ts_dline");
+
+ if (dwc_otg_module_params.dma_burst_size != -1) {
+ if (DWC_OTG_PARAM_TEST(dma_burst_size, 1, 1) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size, 4, 4) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size, 8, 8) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size, 16, 16) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size, 32, 32) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size, 64, 64) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size, 128, 128) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size, 256, 256)) {
+ printk(KERN_ERR "`%d' invalid for parameter "
+ "`dma_burst_size'\n",
+ dwc_otg_module_params.dma_burst_size);
+ dwc_otg_module_params.dma_burst_size = 32;
+ retval++;
+ }
+ }
+
+ if (dwc_otg_module_params.phy_utmi_width != -1) {
+ if (DWC_OTG_PARAM_TEST(phy_utmi_width, 8, 8) &&
+ DWC_OTG_PARAM_TEST(phy_utmi_width, 16, 16)) {
+ printk(KERN_ERR "`%d'invalid for parameter "
+ "`phy_utmi_width'\n",
+ dwc_otg_module_params.phy_utmi_width);
+ dwc_otg_module_params.phy_utmi_width = 8;
+ retval++;
+ }
+ }
+
+ DWC_OTG_PARAM_ERR(en_multiple_tx_fifo, 0, 1, "en_multiple_tx_fifo");
+ retval += chk_param_perio_tx_fifo_sizes(retval);
+ retval += chk_param_tx_fifo_sizes(retval);
+
+ DWC_OTG_PARAM_ERR(thr_ctl, 0, 7, "thr_ctl");
+ DWC_OTG_PARAM_ERR(tx_thr_length, 8, 128, "tx_thr_length");
+ DWC_OTG_PARAM_ERR(rx_thr_length, 8, 128, "rx_thr_length");
+
+ /*
+ * At this point, all module parameters that have been set by the user
+ * are valid, and those that have not are left unset. Now set their
+ * default values and/or check the parameters against the hardware
+ * configurations of the OTG core.
+ */
+
+ /*
+ * This sets the parameter to the default value if it has not been set
+ * by the user
+ */
+#define DWC_OTG_PARAM_SET_DEFAULT(_param_) ({ \
+ int changed = 1; \
+ if (dwc_otg_module_params._param_ == -1) { \
+ changed = 0; \
+ dwc_otg_module_params._param_ = \
+ dwc_param_##_param_##_default; \
+ } \
+ changed; \
+ })
+
+ /*
+ * This checks the macro against the hardware configuration to see if it
+ * is valid. It is possible that the default value could be invalid.
+ * In this case, it will report a module error if the user touched the
+ * parameter. Otherwise it will adjust the value without any error.
+ */
+#define DWC_OTG_PARAM_CHECK_VALID(_param_, _str_, _is_valid_ , _set_valid_) ({ \
+ int changed = DWC_OTG_PARAM_SET_DEFAULT(_param_); \
+ int error = 0; \
+ if (!(_is_valid_)) { \
+ if (changed) { \
+ printk(KERN_ERR "`%d' invalid for parameter " \
+ "`%s' Check HW configuration.\n", \
+ dwc_otg_module_params._param_, \
+ _str_); \
+ error = 1; \
+ } \
+ dwc_otg_module_params._param_ = (_set_valid_); \
+ } \
+ error; \
+ })
+
+ /* OTG Cap */
+ retval += DWC_OTG_PARAM_CHECK_VALID(otg_cap, "otg_cap",
+ is_valid_otg_cap(core_if), get_valid_otg_cap(core_if));
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(dma_enable, "dma_enable",
+ ((dwc_otg_module_params.dma_enable == 1) &&
+ (core_if->hwcfg2.b.architecture == 0)) ? 0 : 1, 0);
+ retval += DWC_OTG_PARAM_CHECK_VALID(opt, "opt", 1, 0);
+ DWC_OTG_PARAM_SET_DEFAULT(dma_burst_size);
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_support_fs_ls_low_power,
+ "host_support_fs_ls_low_power", 1, 0);
+ retval += DWC_OTG_PARAM_CHECK_VALID(enable_dynamic_fifo,
+ "enable_dynamic_fifo",
+ ((dwc_otg_module_params.enable_dynamic_fifo == 0) ||
+ (core_if->hwcfg2.b.dynamic_fifo == 1)), 0);
+ retval += DWC_OTG_PARAM_CHECK_VALID(data_fifo_size, "data_fifo_size",
+ (dwc_otg_module_params.data_fifo_size <=
+ core_if->hwcfg3.b.dfifo_depth),
+ core_if->hwcfg3.b.dfifo_depth);
+ retval += DWC_OTG_PARAM_CHECK_VALID(dev_rx_fifo_size,
+ "dev_rx_fifo_size",
+ (dwc_otg_module_params.dev_rx_fifo_size <=
+ dwc_read_reg32(&core_if->core_global_regs->grxfsiz)),
+ dwc_read_reg32(&core_if->core_global_regs->grxfsiz));
+ retval += DWC_OTG_PARAM_CHECK_VALID(dev_nperio_tx_fifo_size,
+ "dev_nperio_tx_fifo_size",
+ (dwc_otg_module_params.dev_nperio_tx_fifo_size <=
+ (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz)
+ >> 16)),
+ (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz)
+ >> 16));
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_rx_fifo_size,
+ "host_rx_fifo_size",
+ (dwc_otg_module_params.host_rx_fifo_size <=
+ dwc_read_reg32(&core_if->core_global_regs->grxfsiz)),
+ dwc_read_reg32(&core_if->core_global_regs->grxfsiz));
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_nperio_tx_fifo_size,
+ "host_nperio_tx_fifo_size",
+ (dwc_otg_module_params.host_nperio_tx_fifo_size <=
+ (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz)
+ >> 16)),
+ (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz)
+ >> 16));
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_perio_tx_fifo_size,
+ "host_perio_tx_fifo_size",
+ (dwc_otg_module_params.host_perio_tx_fifo_size <=
+ ((dwc_read_reg32(&core_if->core_global_regs->hptxfsiz)
+ >> 16))),
+ ((dwc_read_reg32(&core_if->core_global_regs->hptxfsiz)
+ >> 16)));
+ retval += DWC_OTG_PARAM_CHECK_VALID(max_transfer_size,
+ "max_transfer_size",
+ (dwc_otg_module_params.max_transfer_size <
+ (1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11))),
+ ((1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11))
+ - 1));
+ retval += DWC_OTG_PARAM_CHECK_VALID(max_packet_count,
+ "max_packet_count",
+ (dwc_otg_module_params.max_packet_count <
+ (1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4))),
+ ((1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4))
+ - 1));
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_channels, "host_channels",
+ (dwc_otg_module_params.host_channels <=
+ (core_if->hwcfg2.b.num_host_chan + 1)),
+ (core_if->hwcfg2.b.num_host_chan + 1));
+ retval += DWC_OTG_PARAM_CHECK_VALID(dev_endpoints, "dev_endpoints",
+ (dwc_otg_module_params.dev_endpoints <=
+ (core_if->hwcfg2.b.num_dev_ep)),
+ core_if->hwcfg2.b.num_dev_ep);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(phy_type, "phy_type", 1, 0);
+ retval += DWC_OTG_PARAM_CHECK_VALID(speed, "speed",
+ (dwc_otg_module_params.speed == 0) &&
+ (dwc_otg_module_params.phy_type ==
+ DWC_PHY_TYPE_PARAM_FS) ? 0 : 1,
+ dwc_otg_module_params.phy_type ==
+ DWC_PHY_TYPE_PARAM_FS ? 1 : 0);
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_ls_low_power_phy_clk,
+ "host_ls_low_power_phy_clk",
+ ((dwc_otg_module_params.host_ls_low_power_phy_clk ==
+ DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ) &&
+ (dwc_otg_module_params.phy_type ==
+ DWC_PHY_TYPE_PARAM_FS) ? 0 : 1),
+ ((dwc_otg_module_params.phy_type ==
+ DWC_PHY_TYPE_PARAM_FS) ?
+ DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ :
+ DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ));
+
+ DWC_OTG_PARAM_SET_DEFAULT(phy_ulpi_ddr);
+ DWC_OTG_PARAM_SET_DEFAULT(phy_ulpi_ext_vbus);
+ DWC_OTG_PARAM_SET_DEFAULT(phy_utmi_width);
+ DWC_OTG_PARAM_SET_DEFAULT(ulpi_fs_ls);
+ DWC_OTG_PARAM_SET_DEFAULT(ts_dline);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(i2c_enable, "i2c_enable", 1, 0);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(en_multiple_tx_fifo,
+ "en_multiple_tx_fifo",
+ ((dwc_otg_module_params.en_multiple_tx_fifo == 1) &&
+ (core_if->hwcfg4.b.ded_fifo_en == 0)) ? 0 : 1, 0);
+
+ retval += chk_valid_perio_tx_fifo_sizes(core_if, retval);
+ retval += chk_valid_tx_fifo_sizes(core_if, retval);
+
+ DWC_OTG_PARAM_SET_DEFAULT(thr_ctl);
+ DWC_OTG_PARAM_SET_DEFAULT(tx_thr_length);
+ DWC_OTG_PARAM_SET_DEFAULT(rx_thr_length);
+
+ return retval;
+}
+
+/**
+ * This function is the top level interrupt handler for the Common
+ * (Device and host modes) interrupts.
+ */
+static irqreturn_t dwc_otg_common_irq(int _irq, void *dev)
+{
+ struct dwc_otg_device *dwc_dev = dev;
+ int retval = IRQ_NONE;
+
+ retval = dwc_otg_handle_common_intr(dwc_dev->core_if);
+ return IRQ_RETVAL(retval);
+}
+
+/**
+ * This function is the interrupt handler for the OverCurrent condition
+ * from the external charge pump (if enabled)
+ */
+static irqreturn_t dwc_otg_externalchgpump_irq(int _irq, void *dev)
+{
+ struct dwc_otg_device *dwc_dev = dev;
+
+ if (dwc_otg_is_host_mode(dwc_dev->core_if)) {
+ struct dwc_hcd *dwc_hcd;
+ union hprt0_data hprt0 = {.d32 = 0};
+
+ dwc_hcd = dwc_dev->hcd;
+ spin_lock(&dwc_hcd->lock);
+ dwc_hcd->flags.b.port_over_current_change = 1;
+
+ hprt0.b.prtpwr = 0;
+ dwc_write_reg32(dwc_dev->core_if->host_if->hprt0,
+ hprt0.d32);
+ spin_unlock(&dwc_hcd->lock);
+ } else {
+ /* Device mode - This int is n/a for device mode */
+ printk(KERN_ERR "DeviceMode: OTG OverCurrent Detected\n");
+ }
+
+ return IRQ_HANDLED;
+}
+
+
+/**
+ * This function is called to initialize the DWC_otg CSR data structures.
+ *
+ * The register addresses in the device and host structures are initialized from
+ * the base address supplied by the caller. The calling function must make the
+ * OS calls to get the base address of the DWC_otg controller registers.
+ *
+ * The params argument holds the parameters that specify how the core should be
+ * configured.
+ */
+static struct core_if __devinit *dwc_otg_cil_init(const u32 *base,
+ struct core_params *params)
+{
+ struct core_if *core_if = NULL;
+ struct device_if *dev_if = NULL;
+ struct dwc_host_if *host_if = NULL;
+ u8 *reg_base = (u8 *) base;
+ u32 offset;
+ u32 i;
+
+ core_if = kzalloc(sizeof(*core_if), GFP_KERNEL);
+ if (!core_if)
+ return NULL;
+
+ core_if->core_params = params;
+ core_if->core_global_regs = (struct core_global_regs *) reg_base;
+
+ /* Allocate the Device Mode structures. */
+ dev_if = kmalloc(sizeof(*dev_if), GFP_KERNEL);
+ if (!dev_if) {
+ kfree(core_if);
+ return NULL;
+ }
+
+ dev_if->dev_global_regs = (struct device_global_regs *) (reg_base +
+ DWC_DEV_GLOBAL_REG_OFFSET);
+
+ for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+ offset = i * DWC_EP_REG_OFFSET;
+
+ dev_if->in_ep_regs[i] = (struct device_in_ep_regs *)
+ (reg_base + DWC_DEV_IN_EP_REG_OFFSET + offset);
+
+ dev_if->out_ep_regs[i] = (struct device_out_ep_regs *)
+ (reg_base + DWC_DEV_OUT_EP_REG_OFFSET + offset);
+ }
+
+ dev_if->speed = 0; /* unknown */
+ core_if->dev_if = dev_if;
+
+ /* Allocate the Host Mode structures. */
+ host_if = kmalloc(sizeof(*host_if), GFP_KERNEL);
+ if (!host_if) {
+ kfree(dev_if);
+ kfree(core_if);
+ return NULL;
+ }
+
+ host_if->host_global_regs = (struct host_global_regs *)
+ (reg_base + DWC_OTG_HOST_GLOBAL_REG_OFFSET);
+
+ host_if->hprt0 = (u32 *) (reg_base + DWC_OTG_HOST_PORT_REGS_OFFSET);
+
+ for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+ offset = i * DWC_OTG_CHAN_REGS_OFFSET;
+
+ host_if->hc_regs[i] = (struct dwc_hc_regs *)
+ (reg_base + DWC_OTG_HOST_CHAN_REGS_OFFSET + offset);
+ }
+
+ host_if->num_host_channels = MAX_EPS_CHANNELS;
+ core_if->host_if = host_if;
+ for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+ core_if->data_fifo[i] =
+ (u32 *) (reg_base + DWC_OTG_DATA_FIFO_OFFSET +
+ (i * DWC_OTG_DATA_FIFO_SIZE));
+ }
+ core_if->pcgcctl = (u32 *) (reg_base + DWC_OTG_PCGCCTL_OFFSET);
+
+ /*
+ * Store the contents of the hardware configuration registers here for
+ * easy access later.
+ */
+ core_if->hwcfg1.d32 =
+ dwc_read_reg32(&core_if->core_global_regs->ghwcfg1);
+ core_if->hwcfg2.d32 =
+ dwc_read_reg32(&core_if->core_global_regs->ghwcfg2);
+
+ core_if->hwcfg2.b.architecture = DWC_ARCH;
+
+ core_if->hwcfg3.d32 =
+ dwc_read_reg32(&core_if->core_global_regs->ghwcfg3);
+ core_if->hwcfg4.d32 =
+ dwc_read_reg32(&core_if->core_global_regs->ghwcfg4);
+
+ /* Set the SRP sucess bit for FS-I2c */
+ core_if->srp_success = 0;
+ core_if->srp_timer_started = 0;
+ return core_if;
+}
+
+
+
+/**
+ * This function frees the structures allocated by dwc_otg_cil_init().
+ */
+static void dwc_otg_cil_remove(struct core_if *core_if)
+{
+ /* Disable all interrupts */
+ dwc_modify_reg32(&core_if->core_global_regs->gahbcfg, 1, 0);
+ dwc_write_reg32(&core_if->core_global_regs->gintmsk, 0);
+
+ if (core_if) {
+ kfree(core_if->dev_if);
+ kfree(core_if->host_if);
+ }
+ kfree(core_if);
+}
+
+/**
+ * This function is called when a device is unregistered with the
+ * dwc_otg_driver. This happens, for example, when the rmmod command is
+ * executed. The device may or may not be electrically present. If it is
+ * present, the driver stops device processing. Any resources used on behalf
+ * of this device are freed.
+ */
+static int __devexit dwc_otg_driver_remove(struct of_device *ofdev)
+{
+ struct device *dev = &ofdev->dev;
+ struct dwc_otg_device *dwc_dev = dev_get_drvdata(dev);
+
+ /* Memory allocation for dwc_otg_device may have failed. */
+ if (!dwc_dev)
+ return 0;
+
+ /* Free the IRQ */
+ if (dwc_dev->common_irq_installed)
+ free_irq(dwc_dev->irq, dwc_dev);
+
+ if (!dwc_has_feature(dwc_dev->core_if, DWC_DEVICE_ONLY))
+ if (dwc_dev->hcd)
+ dwc_otg_hcd_remove(dev);
+
+ if (!dwc_has_feature(dwc_dev->core_if, DWC_HOST_ONLY))
+ if (dwc_dev->pcd)
+ dwc_otg_pcd_remove(dev);
+
+ if (dwc_dev->core_if)
+ dwc_otg_cil_remove(dwc_dev->core_if);
+
+ /* Return the memory. */
+ if (dwc_dev->base)
+ iounmap(dwc_dev->base);
+ if (dwc_dev->phys_addr)
+ release_mem_region(dwc_dev->phys_addr, dwc_dev->base_len);
+ kfree(dwc_dev);
+
+ /* Clear the drvdata pointer. */
+ dev_set_drvdata(dev, 0);
+ return 0;
+}
+
+/**
+ * This function disables the controller's Global Interrupt in the AHB Config
+ * register.
+ */
+static void dwc_otg_disable_global_interrupts(struct core_if *core_if)
+{
+ union gahbcfg_data ahbcfg = {.d32 = 0};
+ ahbcfg.b.glblintrmsk = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gahbcfg, ahbcfg.d32, 0);
+}
+
+
+
+/**
+ * This function is called when an device is bound to a
+ * dwc_otg_driver. It creates the driver components required to
+ * control the device (CIL, HCD, and PCD) and it initializes the
+ * device. The driver components are stored in a dwc_otg_device
+ * structure. A reference to the dwc_otg_device is saved in the
+ * device. This allows the driver to access the dwc_otg_device
+ * structure on subsequent calls to driver methods for this device.
+ */
+static int __devinit dwc_otg_driver_probe(struct of_device *ofdev,
+ const struct of_device_id *match)
+{
+ int retval = 0;
+ struct dwc_otg_device *dwc_dev;
+ struct device *dev = &ofdev->dev;
+ struct resource res;
+ u32 *gusbcfg_addr;
+ union gusbcfg_data usbcfg = {.d32 = 0};
+ u32 cp_irq;
+
+ dev_dbg(dev, "dwc_otg_driver_probe(%p)\n", dev);
+
+ dwc_dev = kzalloc(sizeof(*dwc_dev), GFP_KERNEL);
+ if (!dwc_dev) {
+ dev_err(dev, "kmalloc of dwc_otg_device failed\n");
+ retval = -ENOMEM;
+ goto fail;
+ }
+ dwc_dev->reg_offset = 0xFFFFFFFF;
+
+ /* Retrieve the memory and IRQ resources. */
+ dwc_dev->irq = irq_of_parse_and_map(ofdev->dev.of_node, 0);
+ if (dwc_dev->irq == NO_IRQ) {
+ dev_err(dev, "no device irq\n");
+ retval = -ENODEV;
+ goto fail;
+ }
+ dev_dbg(dev, "OTG - device irq: %d\n", dwc_dev->irq);
+
+ if (of_address_to_resource(ofdev->dev.of_node, 0, &res)) {
+ printk(KERN_ERR "%s: Can't get USB-OTG register address\n",
+ __func__);
+ retval = -ENOMEM;
+ goto fail;
+ }
+ dev_dbg(dev, "OTG - ioresource_mem start0x%08x: end:0x%08x\n",
+ (unsigned)res.start, (unsigned)res.end);
+
+ dwc_dev->phys_addr = res.start;
+ dwc_dev->base_len = res.end - res.start + 1;
+ if (!request_mem_region(dwc_dev->phys_addr,
+ dwc_dev->base_len,
+ dwc_driver_name)) {
+ dev_err(dev, "request_mem_region failed\n");
+ retval = -EBUSY;
+ goto fail;
+ }
+
+ /* Map the DWC_otg Core memory into virtual address space. */
+ dwc_dev->base = ioremap(dwc_dev->phys_addr,
+ dwc_dev->base_len);
+ if (!dwc_dev->base) {
+ dev_err(dev, "ioremap64() failed\n");
+ retval = -ENOMEM;
+ goto fail;
+ }
+ dev_dbg(dev, "mapped base=0x%08x\n", (unsigned)dwc_dev->base);
+
+ /*
+ * Initialize driver data to point to the global DWC_otg
+ * Device structure.
+ */
+ dev_set_drvdata(dev, dwc_dev);
+
+ dev_dbg(dev, "dwc_dev=0x%p\n", dwc_dev);
+ dwc_dev->core_if =
+ dwc_otg_cil_init(dwc_dev->base, &dwc_otg_module_params);
+ if (!dwc_dev->core_if) {
+ dev_err(dev, "CIL initialization failed!\n");
+ retval = -ENOMEM;
+ goto fail;
+ }
+ dwc_set_feature(dwc_dev->core_if);
+
+ gusbcfg_addr = &dwc_dev->core_if->core_global_regs->gusbcfg;
+
+ /*
+ * Validate parameter values.
+ */
+ if (check_parameters(dwc_dev->core_if)) {
+ retval = -EINVAL;
+ goto fail;
+ }
+
+ /* Added for PLB DMA phys virt mapping */
+ dwc_dev->core_if->phys_addr = dwc_dev->phys_addr;
+
+ /*
+ * Disable the global interrupt until all the interrupt
+ * handlers are installed.
+ */
+ dwc_otg_disable_global_interrupts(dwc_dev->core_if);
+
+ /*
+ * Install the interrupt handler for the common interrupts before
+ * enabling common interrupts in core_init below.
+ */
+ retval = request_irq(dwc_dev->irq, dwc_otg_common_irq,
+ IRQF_SHARED, "dwc_otg", dwc_dev);
+ if (retval) {
+ printk(KERN_ERR "request of irq%d failed retval: %d\n",
+ dwc_dev->irq, retval);
+ retval = -EBUSY;
+ goto fail;
+ } else {
+ dwc_dev->common_irq_installed = 1;
+ }
+
+ /* Initialize the DWC_otg core. */
+ dwc_otg_core_init(dwc_dev->core_if);
+
+ /* configure chargepump interrupt */
+ cp_irq = irq_of_parse_and_map(ofdev->dev.of_node, 3);
+ if (cp_irq) {
+ retval = request_irq(cp_irq, dwc_otg_externalchgpump_irq,
+ IRQF_SHARED, "dwc_otg_ext_chg_pump", dwc_dev);
+ if (retval) {
+ printk(KERN_ERR "request of irq failed retval: %d\n",
+ retval);
+ retval = -EBUSY;
+ goto fail;
+ } else {
+ printk(KERN_INFO "%s: ExtChgPump Detection "
+ "IRQ registered\n", dwc_driver_name);
+ }
+ }
+
+ if (!dwc_has_feature(dwc_dev->core_if, DWC_HOST_ONLY)) {
+ /* Initialize the PCD */
+ retval = dwc_otg_pcd_init(dev);
+ if (retval) {
+ printk(KERN_ERR "dwc_otg_pcd_init failed\n");
+ dwc_dev->pcd = NULL;
+ goto fail;
+ }
+ }
+
+ if (!dwc_has_feature(dwc_dev->core_if, DWC_DEVICE_ONLY)) {
+ /* Initialize the HCD and force_host_mode */
+ usbcfg.d32 = dwc_read_reg32(gusbcfg_addr);
+ usbcfg.b.force_host_mode = 1;
+ dwc_write_reg32(gusbcfg_addr, usbcfg.d32);
+
+ retval = dwc_otg_hcd_init(dev, dwc_dev);
+ if (retval) {
+ printk(KERN_ERR "dwc_otg_hcd_init failed\n");
+ dwc_dev->hcd = NULL;
+ goto fail;
+ }
+ }
+ /*
+ * Enable the global interrupt after all the interrupt
+ * handlers are installed.
+ */
+ dwc_otg_enable_global_interrupts(dwc_dev->core_if);
+
+ usbcfg.d32 = dwc_read_reg32(gusbcfg_addr);
+ usbcfg.b.force_host_mode = 0;
+ dwc_write_reg32(gusbcfg_addr, usbcfg.d32);
+
+ return 0;
+
+fail:
+ dwc_otg_driver_remove(ofdev);
+ return retval;
+}
+
+/*
+ * This structure defines the methods to be called by a bus driver
+ * during the lifecycle of a device on that bus. Both drivers and
+ * devices are registered with a bus driver. The bus driver matches
+ * devices to drivers based on information in the device and driver
+ * structures.
+ *
+ * The probe function is called when the bus driver matches a device
+ * to this driver. The remove function is called when a device is
+ * unregistered with the bus driver.
+ */
+static const struct of_device_id dwc_otg_match[] = {
+ { .compatible = "amcc,dwc-otg", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, dwc_otg_match);
+
+static struct of_platform_driver dwc_otg_driver = {
+ .probe = dwc_otg_driver_probe,
+ .remove = __devexit_p(dwc_otg_driver_remove),
+ .driver = {
+ .name = "dwc_otg",
+ .owner = THIS_MODULE,
+ .of_match_table = dwc_otg_match,
+ },
+};
+
+/**
+ * This function is called when the dwc_otg_driver is installed with the
+ * insmod command. It registers the dwc_otg_driver structure with the
+ * appropriate bus driver. This will cause the dwc_otg_driver_probe function
+ * to be called. In addition, the bus driver will automatically expose
+ * attributes defined for the device and driver in the special sysfs file
+ * system.
+ */
+static int __init dwc_otg_driver_init(void)
+{
+ int retval = 0;
+ printk(KERN_INFO "%s: version %s\n", dwc_driver_name,
+ DWC_DRIVER_VERSION);
+ retval = of_register_platform_driver(&dwc_otg_driver);
+ if (retval < 0)
+ printk(KERN_ERR "%s registration failed. retval=%d\n",
+ dwc_driver_name, retval);
+ return retval;
+}
+
+module_init(dwc_otg_driver_init);
+
+/**
+ * This function is called when the driver is removed from the kernel
+ * with the rmmod command. The driver unregisters itself with its bus
+ * driver.
+ *
+ */
+static void __exit dwc_otg_driver_cleanup(void)
+{
+ of_unregister_platform_driver(&dwc_otg_driver);
+ printk(KERN_INFO "%s module removed\n", dwc_driver_name);
+}
+module_exit(dwc_otg_driver_cleanup);
+
+MODULE_DESCRIPTION(DWC_DRIVER_DESC);
+MODULE_AUTHOR("Mark Miesfeld <mmiesfeld at apm.com");
+MODULE_LICENSE("GPL");
+
+module_param_named(otg_cap, dwc_otg_module_params.otg_cap, int, 0444);
+MODULE_PARM_DESC(otg_cap, "OTG Capabilities 0=HNP&SRP 1=SRP Only 2=None");
+module_param_named(opt, dwc_otg_module_params.opt, int, 0444);
+MODULE_PARM_DESC(opt, "OPT Mode");
+module_param_named(dma_enable, dwc_otg_module_params.dma_enable, int, 0444);
+MODULE_PARM_DESC(dma_enable, "DMA Mode 0=Slave 1=DMA enabled");
+module_param_named(dma_burst_size, dwc_otg_module_params.dma_burst_size,
+ int, 0444);
+MODULE_PARM_DESC(dma_burst_size, "DMA Burst Size 1, 4, 8, 16, 32, 64, "
+ "128, 256");
+module_param_named(speed, dwc_otg_module_params.speed, int, 0444);
+MODULE_PARM_DESC(speed, "Speed 0=High Speed 1=Full Speed");
+module_param_named(host_support_fs_ls_low_power,
+ dwc_otg_module_params.host_support_fs_ls_low_power,
+ int, 0444);
+MODULE_PARM_DESC(host_support_fs_ls_low_power, "Support Low Power w/FS or LS "
+ "0=Support 1=Don't Support");
+module_param_named(host_ls_low_power_phy_clk,
+ dwc_otg_module_params.host_ls_low_power_phy_clk,
+ int, 0444);
+MODULE_PARM_DESC(host_ls_low_power_phy_clk, "Low Speed Low Power Clock "
+ "0=48Mhz 1=6Mhz");
+module_param_named(enable_dynamic_fifo,
+ dwc_otg_module_params.enable_dynamic_fifo, int, 0444);
+MODULE_PARM_DESC(enable_dynamic_fifo, "0=cC Setting 1=Allow Dynamic Sizing");
+module_param_named(data_fifo_size,
+ dwc_otg_module_params.data_fifo_size, int, 0444);
+MODULE_PARM_DESC(data_fifo_size, "Total number of words in the data FIFO "
+ "memory 32-32768");
+module_param_named(dev_rx_fifo_size, dwc_otg_module_params.dev_rx_fifo_size,
+ int, 0444);
+MODULE_PARM_DESC(dev_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
+module_param_named(dev_nperio_tx_fifo_size,
+ dwc_otg_module_params.dev_nperio_tx_fifo_size,
+ int, 0444);
+MODULE_PARM_DESC(dev_nperio_tx_fifo_size, "Number of words in the non-periodic "
+ "Tx FIFO 16-32768");
+module_param_named(dev_perio_tx_fifo_size_1,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[0],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_1, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_2,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[1],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_2, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_3,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[2],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_3, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_4,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[3],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_4, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_5,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[4],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_5, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_6,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[5],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_6, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_7,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[6],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_7, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_8,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[7],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_8, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_9,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[8],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_9, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_10,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[9],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_10, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_11,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[10],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_11, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_12,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[11],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_12, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_13,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[12],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_13, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_14,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[13],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_14, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_15,
+ dwc_otg_module_params.dev_perio_tx_fifo_size[14],
+ int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_15, "Number of words in the periodic "
+ "Tx FIFO 4-768");
+module_param_named(host_rx_fifo_size, dwc_otg_module_params.host_rx_fifo_size,
+ int, 0444);
+MODULE_PARM_DESC(host_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
+module_param_named(host_nperio_tx_fifo_size,
+ dwc_otg_module_params.host_nperio_tx_fifo_size,
+ int, 0444);
+MODULE_PARM_DESC(host_nperio_tx_fifo_size, "Number of words in the "
+ "non-periodic Tx FIFO 16-32768");
+module_param_named(host_perio_tx_fifo_size,
+ dwc_otg_module_params.host_perio_tx_fifo_size,
+ int, 0444);
+MODULE_PARM_DESC(host_perio_tx_fifo_size, "Number of words in the host "
+ "periodic Tx FIFO 16-32768");
+module_param_named(max_transfer_size, dwc_otg_module_params.max_transfer_size,
+ int, 0444);
+
+MODULE_PARM_DESC(max_transfer_size, "The maximum transfer size supported in "
+ "bytes 2047-65535");
+module_param_named(max_packet_count, dwc_otg_module_params.max_packet_count,
+ int, 0444);
+MODULE_PARM_DESC(max_packet_count, "The maximum number of packets in a "
+ "transfer 15-511");
+module_param_named(host_channels, dwc_otg_module_params.host_channels,
+ int, 0444);
+MODULE_PARM_DESC(host_channels, "The number of host channel registers to "
+ "use 1-16");
+module_param_named(dev_endpoints, dwc_otg_module_params.dev_endpoints,
+ int, 0444);
+MODULE_PARM_DESC(dev_endpoints, "The number of endpoints in addition to EP0 "
+ "available for device mode 1-15");
+module_param_named(phy_type, dwc_otg_module_params.phy_type, int, 0444);
+MODULE_PARM_DESC(phy_type, "0=Reserved 1=UTMI+ 2=ULPI");
+module_param_named(phy_utmi_width, dwc_otg_module_params.phy_utmi_width,
+ int, 0444);
+MODULE_PARM_DESC(phy_utmi_width, "Specifies the UTMI+ Data Width 8 or 16 bits");
+module_param_named(phy_ulpi_ddr, dwc_otg_module_params.phy_ulpi_ddr,
+ int, 0444);
+MODULE_PARM_DESC(phy_ulpi_ddr, "0");
+module_param_named(phy_ulpi_ext_vbus, dwc_otg_module_params.phy_ulpi_ext_vbus,
+ int, 0444);
+MODULE_PARM_DESC(phy_ulpi_ext_vbus,
+ "ULPI PHY using internal or external vbus 0=Internal");
+module_param_named(i2c_enable, dwc_otg_module_params.i2c_enable, int, 0444);
+MODULE_PARM_DESC(i2c_enable, "FS PHY Interface");
+module_param_named(ulpi_fs_ls, dwc_otg_module_params.ulpi_fs_ls, int, 0444);
+MODULE_PARM_DESC(ulpi_fs_ls, "ULPI PHY FS/LS mode only");
+module_param_named(ts_dline, dwc_otg_module_params.ts_dline, int, 0444);
+MODULE_PARM_DESC(ts_dline, "Term select Dline pulsing for all PHYs");
+module_param_named(debug, g_dbg_lvl, int, 0444);
+MODULE_PARM_DESC(debug, "0");
+module_param_named(en_multiple_tx_fifo,
+ dwc_otg_module_params.en_multiple_tx_fifo, int, 0444);
+MODULE_PARM_DESC(en_multiple_tx_fifo, "Dedicated Non Periodic Tx FIFOs "
+ "0=disabled 1=enabled");
+module_param_named(dev_tx_fifo_size_1,
+ dwc_otg_module_params.dev_tx_fifo_size[0], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_1, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_2,
+ dwc_otg_module_params.dev_tx_fifo_size[1], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_2, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_3,
+ dwc_otg_module_params.dev_tx_fifo_size[2], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_3, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_4,
+ dwc_otg_module_params.dev_tx_fifo_size[3], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_4, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_5,
+ dwc_otg_module_params.dev_tx_fifo_size[4], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_5, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_6,
+ dwc_otg_module_params.dev_tx_fifo_size[5], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_6, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_7,
+ dwc_otg_module_params.dev_tx_fifo_size[6], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_7, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_8,
+ dwc_otg_module_params.dev_tx_fifo_size[7], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_8, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_9,
+ dwc_otg_module_params.dev_tx_fifo_size[8], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_9, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_10,
+ dwc_otg_module_params.dev_tx_fifo_size[9], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_10, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_11,
+ dwc_otg_module_params.dev_tx_fifo_size[10], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_11, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_12,
+ dwc_otg_module_params.dev_tx_fifo_size[11], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_12, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_13,
+ dwc_otg_module_params.dev_tx_fifo_size[12], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_13, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_14,
+ dwc_otg_module_params.dev_tx_fifo_size[13], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_14, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_15,
+ dwc_otg_module_params.dev_tx_fifo_size[14], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_15, "Number of words in the Tx FIFO 4-768");
+module_param_named(thr_ctl, dwc_otg_module_params.thr_ctl, int, 0444);
+MODULE_PARM_DESC(thr_ctl, "Thresholding enable flag bit 0 - non ISO Tx thr., "
+ "1 - ISO Tx thr., 2 - Rx thr.- bit "
+ "0=disabled 1=enabled");
+module_param_named(tx_thr_length, dwc_otg_module_params.tx_thr_length,
+ int, 0444);
+MODULE_PARM_DESC(tx_thr_length, "Tx Threshold length in 32 bit DWORDs");
+module_param_named(rx_thr_length, dwc_otg_module_params.rx_thr_length,
+ int, 0444);
+MODULE_PARM_DESC(rx_thr_length, "Rx Threshold length in 32 bit DWORDs");
+
diff --git a/drivers/usb/otg/dwc_otg_driver.h b/drivers/usb/otg/dwc_otg_driver.h
new file mode 100644
index 0000000..4b56be7
--- /dev/null
+++ b/drivers/usb/otg/dwc_otg_driver.h
@@ -0,0 +1,97 @@
+/*
+ * DesignWare HS OTG controller driver
+ *
+ * Author: Mark Miesfeld <mmiesfeld at apm.com>
+ *
+ * Based on versions provided by AMCC and Synopsis which are:
+ * Copyright (C) 2009-2010 AppliedMicro(www.apm.com)
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#if !defined(__DWC_OTG_DRIVER_H__)
+#define __DWC_OTG_DRIVER_H__
+
+/*
+ * This file contains the interface to the Linux driver.
+ */
+#include "dwc_otg_cil.h"
+
+/* Type declarations */
+struct dwc_pcd;
+struct dwc_hcd;
+
+/*
+ * This structure is a wrapper that encapsulates the driver components used to
+ * manage a single DWC_otg controller.
+ */
+struct dwc_otg_device {
+ /* Base address returned from ioremap() */
+ void *base;
+
+ /* Pointer to the core interface structure. */
+ struct core_if *core_if;
+
+ /* Register offset for Diagnostic API.*/
+ u32 reg_offset;
+
+ /* Pointer to the PCD structure. */
+ struct dwc_pcd *pcd;
+
+ /* Pointer to the HCD structure. */
+ struct dwc_hcd *hcd;
+
+ /* Flag to indicate whether the common IRQ handler is installed. */
+ u8 common_irq_installed;
+
+ /* Interrupt request number. */
+ unsigned int irq;
+
+ /*
+ * Physical address of Control and Status registers, used by
+ * release_mem_region().
+ */
+ resource_size_t phys_addr;
+
+ /* Length of memory region, used by release_mem_region(). */
+ unsigned long base_len;
+};
+
+#endif
--
1.7.1
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