ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/usb/host/ehci-grlib.c b/marvell/linux/drivers/usb/host/ehci-grlib.c
new file mode 100644
index 0000000..a2c3b4e
--- /dev/null
+++ b/marvell/linux/drivers/usb/host/ehci-grlib.c
@@ -0,0 +1,179 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Driver for Aeroflex Gaisler GRLIB GRUSBHC EHCI host controller
+ *
+ * GRUSBHC is typically found on LEON/GRLIB SoCs
+ *
+ * (c) Jan Andersson <jan@gaisler.com>
+ *
+ * Based on ehci-ppc-of.c which is:
+ * (c) Valentine Barshak <vbarshak@ru.mvista.com>
+ * and in turn based on "ehci-ppc-soc.c" by Stefan Roese <sr@denx.de>
+ * and "ohci-ppc-of.c" by Sylvain Munaut <tnt@246tNt.com>
+ */
+
+#include <linux/err.h>
+#include <linux/signal.h>
+
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+
+#define GRUSBHC_HCIVERSION 0x0100 /* Known value of cap. reg. HCIVERSION */
+
+static const struct hc_driver ehci_grlib_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "GRLIB GRUSBHC EHCI",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ehci_irq,
+ .flags = HCD_MEMORY | HCD_DMA | HCD_USB2 | HCD_BH,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ehci_setup,
+ .start = ehci_run,
+ .stop = ehci_stop,
+ .shutdown = ehci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ehci_urb_enqueue,
+ .urb_dequeue = ehci_urb_dequeue,
+ .endpoint_disable = ehci_endpoint_disable,
+ .endpoint_reset = ehci_endpoint_reset,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ehci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+#ifdef CONFIG_PM
+ .bus_suspend = ehci_bus_suspend,
+ .bus_resume = ehci_bus_resume,
+#endif
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
+
+ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+
+static int ehci_hcd_grlib_probe(struct platform_device *op)
+{
+ struct device_node *dn = op->dev.of_node;
+ struct usb_hcd *hcd;
+ struct ehci_hcd *ehci = NULL;
+ struct resource res;
+ u32 hc_capbase;
+ int irq;
+ int rv;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ dev_dbg(&op->dev, "initializing GRUSBHC EHCI USB Controller\n");
+
+ rv = of_address_to_resource(dn, 0, &res);
+ if (rv)
+ return rv;
+
+ /* usb_create_hcd requires dma_mask != NULL */
+ op->dev.dma_mask = &op->dev.coherent_dma_mask;
+ hcd = usb_create_hcd(&ehci_grlib_hc_driver, &op->dev,
+ "GRUSBHC EHCI USB");
+ if (!hcd)
+ return -ENOMEM;
+
+ hcd->rsrc_start = res.start;
+ hcd->rsrc_len = resource_size(&res);
+
+ irq = irq_of_parse_and_map(dn, 0);
+ if (irq == NO_IRQ) {
+ dev_err(&op->dev, "%s: irq_of_parse_and_map failed\n",
+ __FILE__);
+ rv = -EBUSY;
+ goto err_irq;
+ }
+
+ hcd->regs = devm_ioremap_resource(&op->dev, &res);
+ if (IS_ERR(hcd->regs)) {
+ rv = PTR_ERR(hcd->regs);
+ goto err_ioremap;
+ }
+
+ ehci = hcd_to_ehci(hcd);
+
+ ehci->caps = hcd->regs;
+
+ /* determine endianness of this implementation */
+ hc_capbase = ehci_readl(ehci, &ehci->caps->hc_capbase);
+ if (HC_VERSION(ehci, hc_capbase) != GRUSBHC_HCIVERSION) {
+ ehci->big_endian_mmio = 1;
+ ehci->big_endian_desc = 1;
+ ehci->big_endian_capbase = 1;
+ }
+
+ rv = usb_add_hcd(hcd, irq, 0);
+ if (rv)
+ goto err_ioremap;
+
+ device_wakeup_enable(hcd->self.controller);
+ return 0;
+
+err_ioremap:
+ irq_dispose_mapping(irq);
+err_irq:
+ usb_put_hcd(hcd);
+
+ return rv;
+}
+
+
+static int ehci_hcd_grlib_remove(struct platform_device *op)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(op);
+
+ dev_dbg(&op->dev, "stopping GRLIB GRUSBHC EHCI USB Controller\n");
+
+ usb_remove_hcd(hcd);
+
+ irq_dispose_mapping(hcd->irq);
+
+ usb_put_hcd(hcd);
+
+ return 0;
+}
+
+
+static const struct of_device_id ehci_hcd_grlib_of_match[] = {
+ {
+ .name = "GAISLER_EHCI",
+ },
+ {
+ .name = "01_026",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ehci_hcd_grlib_of_match);
+
+
+static struct platform_driver ehci_grlib_driver = {
+ .probe = ehci_hcd_grlib_probe,
+ .remove = ehci_hcd_grlib_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "grlib-ehci",
+ .of_match_table = ehci_hcd_grlib_of_match,
+ },
+};