Adding a UCLASS driver for USB based on driver-model, to facilitate
binding mutiple host-controllers to their respective drivers, and
thereby enable using mutiple controllers simultaneously on a platform.
Signed-off-by: Vivek Gautam <gautam.vi...@samsung.com>
---
drivers/usb/host/Kconfig | 9 ++++
drivers/usb/host/Makefile | 3 ++
drivers/usb/host/usb-uclass.c | 107 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 119 insertions(+)
create mode 100644 drivers/usb/host/usb-uclass.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 30d1457..fceacbb 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -3,6 +3,15 @@
#
comment "USB Host Controller Drivers"
+config DM_USB
+ bool "USB Driver model support"
+ ---help---
+ Driver model support for USB host controller drivers.
+ This will allow use of mutiple kinds of host controllers viz. OHCI,
+ EHCI, XHCI, etc simultaneously which was not possible till now.
+ Say 'y' if you have mutiple types of controllers on your boards
+ and would like to enable support for all of them.
+
config USB_XHCI_HCD
bool "xHCI HCD (USB 3.0) support"
---help---
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 66d6e9a..d54e2a7 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -5,6 +5,9 @@
# SPDX-License-Identifier: GPL-2.0+
#
+# usb driver-model
+obj-$(CONFIG_DM_USB) += usb-uclass.o
+
# ohci
obj-$(CONFIG_USB_OHCI_NEW) += ohci-hcd.o
obj-$(CONFIG_USB_ATMEL) += ohci-at91.o
diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c
new file mode 100644
index 0000000..e7a97ec
--- /dev/null
+++ b/drivers/usb/host/usb-uclass.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2014 Samsung Electronics Co.Ltd
+ *
+ * Provides a smooth translation from usb_*() APIs from
+ * core usb drivers to controller drivers, enabling simultaneous
+ * use of different types of controller at once.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <linux/err.h>
+#include <asm/io.h>
+#include <usb.h>
+//#include <linux/list.h>
+
+//DECLARE_GLOBAL_DATA_PTR;
+
+UCLASS_DRIVER(usb) = {
+ .name = "usb",
+ .id = UCLASS_USB,
+};
+
+int usb_lowlevel_init(int index, enum usb_init_type init,
+ void **controller, struct udevice *udev_usb)
+{
+ const struct usb_ops *ops;
+
+ if (IS_ERR(udev_usb))
+ return -EINVAL;
+
+ ops = device_get_ops(udev_usb);
+
+ if (!ops->lowlevel_init)
+ return -ENOSYS;
+
+ return ops->lowlevel_init(index, init, controller);
+}
+
+int usb_lowlevel_stop(int index, struct udevice *udev_usb)
+{
+ const struct usb_ops *ops;
+
+ if (IS_ERR(udev_usb))
+ return -EINVAL;
+
+ ops = device_get_ops(udev_usb);
+
+ if (!ops->lowlevel_stop)
+ return -ENOSYS;
+
+ return ops->lowlevel_stop(index);
+}
+
+int usb_submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
+ void *buffer, int transfer_len,
+ struct udevice *udev_usb)
+{
+ const struct usb_ops *ops;
+
+ if (IS_ERR(udev_usb))
+ return -EINVAL;
+
+ ops = device_get_ops(udev_usb);
+
+ if (!ops->submit_bulk_msg)
+ return -ENOSYS;
+
+ return ops->submit_bulk_msg(dev, pipe, buffer, transfer_len);
+}
+
+int usb_submit_control_msg(struct usb_device *dev, unsigned long pipe,
+ void *buffer, int transfer_len,
+ struct devrequest *setup, struct udevice *udev_usb)
+{
+ const struct usb_ops *ops;
+
+ if (IS_ERR(udev_usb))
+ return -EINVAL;
+
+ ops = device_get_ops(udev_usb);
+
+ if (!ops->submit_ctrl_msg)
+ return -ENOSYS;
+
+ return ops->submit_ctrl_msg(dev,pipe, buffer, transfer_len, setup);
+}
+
+int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
+ void *buffer, int transfer_len,
+ int interval, struct udevice *udev_usb)
+{
+ const struct usb_ops *ops;
+
+ if (IS_ERR(udev_usb))
+ return -EINVAL;
+
+ ops = device_get_ops(udev_usb);
+
+ if (!ops->submit_int_msg)
+ return -ENOSYS;
+
+ return ops->submit_int_msg(dev, pipe, buffer, transfer_len, interval);
+}
--
1.7.10.4
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