[mcs814x] add Moschip MSC814x support

This target currently only supports Moschip's MCS8140 SoC, but support
for other chips in the same family (MCS8142, MCS8144) will be easy to add.

Target support is entirely using Device Tree for probing peripherals.
Drivers support include:
- PCI
- USB 1 & 2
- watchdog
- random number generator
- UART
- timer
- internal Ethernet PHY
- Ethernet MAC core

Support for the following boards is included using Device Tree
- Devolo dLAN USB Extender
- Tigal RBT-832

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32462 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 202 insertions, 0 deletions

diff --git a/target/linux/mcs814x/files-3.3/drivers/usb/host/ohci-mcs814x.c b/target/linux/mcs814x/files-3.3/drivers/usb/host/ohci-mcs814x.c
new file mode 100644
index 000000000..59ec7740d
--- /dev/null
+++ b/target/linux/mcs814x/files-3.3/drivers/usb/host/ohci-mcs814x.c
@@ -0,0 +1,202 @@
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ * (C) Copyright 2002 Hewlett-Packard Company
+ *
+ * Bus Glue for Moschip MCS814x.
+ *
+ * Written by Christopher Hoover <ch@hpl.hp.com>
+ * Based on fragments of previous driver by Russell King et al.
+ *
+ * Modified for LH7A404 from ohci-sa1111.c
+ *  by Durgesh Pattamatta <pattamattad@sharpsec.com>
+ *
+ * Modified for pxa27x from ohci-lh7a404.c
+ *  by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
+ *
+ * Modified for mcs814x from ohci-mcs814x.c
+ *  by Lennert Buytenhek <buytenh@wantstofly.org> 28-2-2006
+ *  Based on an earlier driver by Ray Lehtiniemi
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/device.h>
+#include <linux/signal.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+
+static int usb_hcd_mcs814x_probe(const struct hc_driver *driver,
+			 struct platform_device *pdev)
+{
+	int retval;
+	struct usb_hcd *hcd;
+
+	if (pdev->resource[1].flags != IORESOURCE_IRQ) {
+		pr_debug("resource[1] is not IORESOURCE_IRQ");
+		return -ENOMEM;
+	}
+
+	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+	pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+
+	hcd = usb_create_hcd(driver, &pdev->dev, "mcs814x");
+	if (hcd == NULL)
+		return -ENOMEM;
+
+	hcd->rsrc_start = pdev->resource[0].start;
+	hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
+	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+		usb_put_hcd(hcd);
+		retval = -EBUSY;
+		goto err1;
+	}
+
+	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+	if (hcd->regs == NULL) {
+		pr_debug("ioremap failed");
+		retval = -ENOMEM;
+		goto err2;
+	}
+
+	ohci_hcd_init(hcd_to_ohci(hcd));
+
+	retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_DISABLED);
+	if (retval == 0)
+		return retval;
+
+	iounmap(hcd->regs);
+err2:
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err1:
+	usb_put_hcd(hcd);
+
+	return retval;
+}
+
+static void usb_hcd_mcs814x_remove(struct usb_hcd *hcd,
+			struct platform_device *pdev)
+{
+	usb_remove_hcd(hcd);
+	iounmap(hcd->regs);
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+	usb_put_hcd(hcd);
+}
+
+static int __devinit ohci_mcs814x_start(struct usb_hcd *hcd)
+{
+	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+	int ret;
+
+	ret = ohci_init(ohci);
+	if (ret < 0)
+		return ret;
+
+	ret = ohci_run(ohci);
+	if (ret < 0) {
+		err("can't start %s", hcd->self.bus_name);
+		ohci_stop(hcd);
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct hc_driver ohci_mcs814x_hc_driver = {
+	.description		= hcd_name,
+	.product_desc		= "MCS814X OHCI",
+	.hcd_priv_size		= sizeof(struct ohci_hcd),
+	.irq			= ohci_irq,
+	.flags			= HCD_USB11 | HCD_MEMORY,
+	.start			= ohci_mcs814x_start,
+	.stop			= ohci_stop,
+	.shutdown		= ohci_shutdown,
+	.urb_enqueue		= ohci_urb_enqueue,
+	.urb_dequeue		= ohci_urb_dequeue,
+	.endpoint_disable	= ohci_endpoint_disable,
+	.get_frame_number	= ohci_get_frame,
+	.hub_status_data	= ohci_hub_status_data,
+	.hub_control		= ohci_hub_control,
+#ifdef CONFIG_PM
+	.bus_suspend		= ohci_bus_suspend,
+	.bus_resume		= ohci_bus_resume,
+#endif
+	.start_port_reset	= ohci_start_port_reset,
+};
+
+extern int usb_disabled(void);
+
+static int ohci_hcd_mcs814x_drv_probe(struct platform_device *pdev)
+{
+	int ret;
+
+	ret = -ENODEV;
+	if (!usb_disabled())
+		ret = usb_hcd_mcs814x_probe(&ohci_mcs814x_hc_driver, pdev);
+
+	return ret;
+}
+
+static int ohci_hcd_mcs814x_drv_remove(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+	usb_hcd_mcs814x_remove(hcd, pdev);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int ohci_hcd_mcs814x_drv_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+
+	if (time_before(jiffies, ohci->next_statechange))
+		msleep(5);
+	ohci->next_statechange = jiffies;
+
+	hcd->state = HC_STATE_SUSPENDED;
+
+	return 0;
+}
+
+static int ohci_hcd_mcs814x_drv_resume(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+	int status;
+
+	if (time_before(jiffies, ohci->next_statechange))
+		msleep(5);
+	ohci->next_statechange = jiffies;
+
+	ohci_finish_controller_resume(hcd);
+	return 0;
+}
+#endif
+
+static const struct of_device_id mcs814x_ohci_id[] = {
+	{ .compatible = "moschip,mcs814x-ohci" },
+	{ .compatible = "ohci-le" },
+	{ /* sentinel */ },
+};
+
+static struct platform_driver ohci_hcd_mcs814x_driver = {
+	.probe		= ohci_hcd_mcs814x_drv_probe,
+	.remove		= ohci_hcd_mcs814x_drv_remove,
+	.shutdown	= usb_hcd_platform_shutdown,
+#ifdef CONFIG_PM
+	.suspend	= ohci_hcd_mcs814x_drv_suspend,
+	.resume		= ohci_hcd_mcs814x_drv_resume,
+#endif
+	.driver		= {
+		.name	= "mcs814x-ohci",
+		.owner	= THIS_MODULE,
+		.of_match_table = mcs814x_ohci_id,
+	},
+};
+
+MODULE_ALIAS("platform:mcs814x-ohci");