The Designware USB3 IP can be configured with
an internal xHCI. If we're running on such a
version, let's start the xHCI stack.
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/dwc3/Kconfig | 1 +
drivers/usb/dwc3/Makefile | 2 +
drivers/usb/dwc3/core.c | 39 ++++++++++++++-
drivers/usb/dwc3/core.h | 9 ++++
drivers/usb/dwc3/host.c | 116 +++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 164 insertions(+), 3 deletions(-)
create mode 100644 drivers/usb/dwc3/host.c
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index 3c1d67d..2c05ec9 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -2,6 +2,7 @@ config USB_DWC3
tristate "DesignWare USB3 DRD Core Support"
depends on (USB || USB_GADGET)
select USB_OTG_UTILS
+ select USB_XHCI_PLATFORM
help
Say Y or M here if your system has a Dual Role SuperSpeed
USB controller based on the DesignWare USB3 IP Core.
diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile
index 593d1db..0926e71 100644
--- a/drivers/usb/dwc3/Makefile
+++ b/drivers/usb/dwc3/Makefile
@@ -4,11 +4,13 @@ ccflags-$(CONFIG_USB_DWC3_VERBOSE) += -DVERBOSE_DEBUG
obj-$(CONFIG_USB_DWC3) += dwc3.o
dwc3-y := core.o
+dwc3-y += host.o
ifneq ($(CONFIG_USB_GADGET_DWC3),)
dwc3-y += gadget.o ep0.o
endif
+
ifneq ($(CONFIG_DEBUG_FS),)
dwc3-y += debugfs.o
endif
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index df15199..410835e 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -350,6 +350,8 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
goto err1;
}
+ dwc->res = res;
+
res = request_mem_region(res->start, resource_size(res),
dev_name(&pdev->dev));
if (!res) {
@@ -401,7 +403,6 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
mode = DWC3_MODE(dwc->hwparams.hwparams0);
switch (mode) {
- case DWC3_MODE_DRD:
case DWC3_MODE_DEVICE:
ret = dwc3_gadget_init(dwc);
if (ret) {
@@ -409,6 +410,26 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
goto err4;
}
break;
+ case DWC3_MODE_HOST:
+ ret = dwc3_host_init(dwc);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to initialize host\n");
+ goto err4;
+ }
+ break;
+ case DWC3_MODE_DRD:
+ ret = dwc3_host_init(dwc);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to initialize host\n");
+ goto err4;
+ }
+
+ ret = dwc3_gadget_init(dwc);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to initialize gadget\n");
+ goto err4;
+ }
+ break;
default:
dev_err(&pdev->dev, "Unsupported mode of operation %d\n", mode);
goto err4;
@@ -427,10 +448,16 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
err5:
switch (mode) {
- case DWC3_MODE_DRD:
case DWC3_MODE_DEVICE:
dwc3_gadget_exit(dwc);
break;
+ case DWC3_MODE_HOST:
+ dwc3_host_exit(dwc);
+ break;
+ case DWC3_MODE_DRD:
+ dwc3_host_exit(dwc);
+ dwc3_gadget_exit(dwc);
+ break;
default:
/* do nothing */
break;
@@ -465,10 +492,16 @@ static int __devexit dwc3_remove(struct platform_device *pdev)
dwc3_debugfs_exit(dwc);
switch (dwc->mode) {
- case DWC3_MODE_DRD:
case DWC3_MODE_DEVICE:
dwc3_gadget_exit(dwc);
break;
+ case DWC3_MODE_HOST:
+ dwc3_host_exit(dwc);
+ break;
+ case DWC3_MODE_DRD:
+ dwc3_host_exit(dwc);
+ dwc3_gadget_exit(dwc);
+ break;
default:
/* do nothing */
break;
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index a3ef8f3..a775543 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -41,6 +41,7 @@
#include <linux/device.h>
#include <linux/spinlock.h>
+#include <linux/ioport.h>
#include <linux/list.h>
#include <linux/dma-mapping.h>
#include <linux/mm.h>
@@ -560,6 +561,7 @@ struct dwc3_hwparams {
* @ep0_bounce_addr: dma address of ep0_bounce
* @lock: for synchronizing
* @dev: pointer to our struct device
+ * @xhci: pointer to our xHCI child
* @event_buffer_list: a list of event buffers
* @gadget: device side representation of the peripheral controller
* @gadget_driver: pointer to the gadget driver
@@ -598,6 +600,9 @@ struct dwc3 {
spinlock_t lock;
struct device *dev;
+ struct platform_device *xhci;
+ struct resource *res;
+
struct dwc3_event_buffer *ev_buffs[DWC3_EVENT_BUFFERS_MAX];
struct dwc3_ep *eps[DWC3_ENDPOINTS_NUM];
@@ -782,4 +787,8 @@ union dwc3_event {
#define DWC3_HAS_XHCI BIT(1)
#define DWC3_HAS_OTG BIT(3)
+/* prototypes */
+int dwc3_host_init(struct dwc3 *dwc);
+void dwc3_host_exit(struct dwc3 *dwc);
+
#endif /* __DRIVERS_USB_DWC3_CORE_H */
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
new file mode 100644
index 0000000..9b300a2
--- /dev/null
+++ b/drivers/usb/dwc3/host.c
@@ -0,0 +1,116 @@
+/**
+ * host.c - DesignWare USB3 DRD Controller Host Glue
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@xxxxxx>,
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS 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.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+
+#include "core.h"
+#include "io.h"
+
+#include "debug.h"
+
+static struct resource generic_resources[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+int dwc3_host_init(struct dwc3 *dwc)
+{
+ struct platform_device *xhci;
+ int ret;
+
+ xhci = platform_device_alloc("xhci", -1);
+ if (!xhci) {
+ dev_err(dwc->dev, "couldn't allocate xHCI device\n");
+ ret = -ENOMEM;
+ goto err0;
+ }
+
+ dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
+
+ xhci->dev.parent = dwc->dev;
+ xhci->dev.dma_mask = dwc->dev->dma_mask;
+ xhci->dev.dma_parms = dwc->dev->dma_parms;
+
+ dwc->xhci = xhci;
+
+ /* setup resources */
+ generic_resources[0].start = dwc->irq;
+
+ generic_resources[1].start = dwc->res->start;
+ generic_resources[1].end = dwc->res->start + 0x7fff;
+
+ ret = platform_device_add_resources(xhci, generic_resources,
+ ARRAY_SIZE(generic_resources));
+ if (ret) {
+ dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
+ goto err1;
+ }
+
+ ret = platform_device_add(xhci);
+ if (ret) {
+ dev_err(dwc->dev, "failed to register xHCI device\n");
+ goto err1;
+ }
+
+ return 0;
+
+err1:
+ platform_device_put(xhci);
+
+err0:
+ return ret;
+}
+
+void dwc3_host_exit(struct dwc3 *dwc)
+{
+ platform_device_unregister(dwc->xhci);
+}
--
1.7.8.rc3
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