usb: add support of generic OHCI devices

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>

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 0096a2fdd9da5cc304446c37d80a2f3131c1bf5f..39f7185e8600686e9cadebb3c5b4feda1acf569b 100644 (file)
--- 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 0b4b458ccacb1d9f1a9a28f742f381426b73e059..6183b80c75b89152292395338cea01579415682b 100644 (file)
--- 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 (file)
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,
+};