[U-Boot] [PATCH] usb: add support of generic OHCI devices

Alexey Brodkin
2015-12-14T14:18:50Z

This driver is meant to be used with any OHCI-compatible host
controller in case if there's no need for platform-specific
glue such as setup of controller or PHY's power mode via
GPIOs etc.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Marek Vasut <marex@denx.de>
---
drivers/usb/host/Kconfig | 8 ++++++++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ohci-generic.c | 45 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 54 insertions(+)
create mode 100644 drivers/usb/host/ohci-generic.c

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 0096a2f..39f7185 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -26,6 +26,14 @@ config USB_XHCI_UNIPHIER

endif

+config USB_OHCI_GENERIC
+ bool "Support for generic OHCI USB controller"
+ depends on OF_CONTROL
+ depends on DM_USB
+ default n
+ ---help---
+ Enables support for generic OHCI controller.
+
config USB_EHCI_HCD
bool "EHCI HCD (USB 2.0) support"
---help---
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 0b4b458..6183b80 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_USB_OHCI_S3C24XX) += ohci-s3c24xx.o
obj-$(CONFIG_USB_OHCI_EP93XX) += ohci-ep93xx.o
obj-$(CONFIG_USB_OHCI_SUNXI) += ohci-sunxi.o
obj-$(CONFIG_USB_OHCI_LPC32XX) += ohci-lpc32xx.o
+obj-$(CONFIG_USB_OHCI_GENERIC) += ohci-generic.o

# echi
obj-$(CONFIG_USB_EHCI) += ehci-hcd.o
diff --git a/drivers/usb/host/ohci-generic.c b/drivers/usb/host/ohci-generic.c
new file mode 100644
index 0000000..f3307f4
--- /dev/null
+++ b/drivers/usb/host/ohci-generic.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2015 Alexey Brodkin <abrodkin@synopsys.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include "ohci.h"
+
+#if !defined(CONFIG_USB_OHCI_NEW)
+# error "Generic OHCI driver requires CONFIG_USB_OHCI_NEW"
+#endif
+
+struct generic_ohci {
+ ohci_t ohci;
+};
+
+static int ohci_usb_probe(struct udevice *dev)
+{
+ struct ohci_regs *regs = (struct ohci_regs *)dev_get_addr(dev);
+
+ return ohci_register(dev, regs);
+}
+
+static int ohci_usb_remove(struct udevice *dev)
+{
+ return ohci_deregister(dev);
+}
+
+static const struct udevice_id ohci_usb_ids[] = {
+ { .compatible = "generic-ohci" },
+ { }
+};
+
+U_BOOT_DRIVER(ohci_generic) = {
+ .name = "ohci_generic",
+ .id = UCLASS_USB,
+ .of_match = ohci_usb_ids,
+ .probe = ohci_usb_probe,
+ .remove = ohci_usb_remove,
+ .ops = &ohci_usb_ops,
+ .priv_auto_alloc_size = sizeof(struct generic_ohci),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
--
2.4.3