6 files changed, 363 insertions, 0 deletions

diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 67eb3770868f..5a7c8f1d76c6 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -41,6 +41,7 @@ config USB_ARCH_HAS_OHCI
         default y if MFD_TC6393XB
         default y if ARCH_W90X900
         default y if ARCH_DAVINCI_DA8XX
+        default y if ARCH_CNS3XXX
         # PPC:
         default y if STB03xxx
         default y if PPC_MPC52xx
@@ -66,6 +67,7 @@ config USB_ARCH_HAS_EHCI
         default y if ARCH_AT91SAM9G45
         default y if ARCH_MXC
         default y if ARCH_OMAP3
+        default y if ARCH_CNS3XXX
         default PCI
 
 # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface.
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 6f4f8e6a40c7..f8970d151d2a 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -147,6 +147,14 @@ config USB_W90X900_EHCI
         ---help---
                 Enables support for the W90X900 USB controller
 
+config USB_CNS3XXX_EHCI
+        bool "Cavium CNS3XXX EHCI Module"
+        depends on USB_EHCI_HCD && ARCH_CNS3XXX
+        ---help---
+          Enable support for the CNS3XXX SOC's on-chip EHCI controller.
+          It is needed for high-speed (480Mbit/sec) USB 2.0 device
+          support.
+
 config USB_OXU210HP_HCD
         tristate "OXU210HP HCD support"
         depends on USB
@@ -286,6 +294,13 @@ config USB_OHCI_HCD_SSB
 
           If unsure, say N.
 
+config USB_CNS3XXX_OHCI
+        bool "Cavium CNS3XXX OHCI Module"
+        depends on USB_OHCI_HCD && ARCH_CNS3XXX
+        ---help---
+          Enable support for the CNS3XXX SOC's on-chip OHCI controller.
+          It is needed for low-speed USB 1.0 device support.
+
 config USB_OHCI_BIG_ENDIAN_DESC
         bool
         depends on USB_OHCI_HCD
diff --git a/drivers/usb/host/ehci-cns3xxx.c b/drivers/usb/host/ehci-cns3xxx.c
new file mode 100644
index 000000000000..708a05b5d258
--- /dev/null
+++ b/drivers/usb/host/ehci-cns3xxx.c
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/atomic.h>
+#include <mach/cns3xxx.h>
+#include <mach/pm.h>
+
+static int cns3xxx_ehci_init(struct usb_hcd *hcd)
+{
+        struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+        int retval;
+
+        /*
+         * EHCI and OHCI share the same clock and power,
+         * resetting twice would cause the 1st controller been reset.
+         * Therefore only do power up  at the first up device, and
+         * power down at the last down device.
+         *
+         * Set USB AHB INCR length to 16
+         */
+        if (atomic_inc_return(&usb_pwr_ref) == 1) {
+                cns3xxx_pwr_power_up(1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_PLL_USB);
+                cns3xxx_pwr_clk_en(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
+                cns3xxx_pwr_soft_rst(1 << PM_SOFT_RST_REG_OFFST_USB_HOST);
+                __raw_writel((__raw_readl(MISC_CHIP_CONFIG_REG) | (0X2 << 24)),
+                        MISC_CHIP_CONFIG_REG);
+        }
+
+        ehci->caps = hcd->regs;
+        ehci->regs = hcd->regs
+                + HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+        ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+
+        hcd->has_tt = 0;
+        ehci_reset(ehci);
+
+        retval = ehci_init(hcd);
+        if (retval)
+                return retval;
+
+        ehci_port_power(ehci, 0);
+
+        return retval;
+}
+
+static const struct hc_driver cns3xxx_ehci_hc_driver = {
+        .description            = hcd_name,
+        .product_desc           = "CNS3XXX EHCI Host Controller",
+        .hcd_priv_size          = sizeof(struct ehci_hcd),
+        .irq                    = ehci_irq,
+        .flags                  = HCD_MEMORY | HCD_USB2,
+        .reset                  = cns3xxx_ehci_init,
+        .start                  = ehci_run,
+        .stop                   = ehci_stop,
+        .shutdown               = ehci_shutdown,
+        .urb_enqueue            = ehci_urb_enqueue,
+        .urb_dequeue            = ehci_urb_dequeue,
+        .endpoint_disable       = ehci_endpoint_disable,
+        .endpoint_reset         = ehci_endpoint_reset,
+        .get_frame_number       = ehci_get_frame,
+        .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 cns3xxx_ehci_probe(struct platform_device *pdev)
+{
+        struct device *dev = &pdev->dev;
+        struct usb_hcd *hcd;
+        const struct hc_driver *driver = &cns3xxx_ehci_hc_driver;
+        struct resource *res;
+        int irq;
+        int retval;
+
+        if (usb_disabled())
+                return -ENODEV;
+
+        res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+        if (!res) {
+                dev_err(dev, "Found HC with no IRQ.\n");
+                return -ENODEV;
+        }
+        irq = res->start;
+
+        hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+        if (!hcd)
+                return -ENOMEM;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(dev, "Found HC with no register addr.\n");
+                retval = -ENODEV;
+                goto err1;
+        }
+
+        hcd->rsrc_start = res->start;
+        hcd->rsrc_len = res->end - res->start + 1;
+
+        if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
+                                driver->description)) {
+                dev_dbg(dev, "controller already in use\n");
+                retval = -EBUSY;
+                goto err1;
+        }
+
+        hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+        if (hcd->regs == NULL) {
+                dev_dbg(dev, "error mapping memory\n");
+                retval = -EFAULT;
+                goto err2;
+        }
+
+        retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+        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 int cns3xxx_ehci_remove(struct platform_device *pdev)
+{
+        struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+        usb_remove_hcd(hcd);
+        iounmap(hcd->regs);
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+
+        /*
+         * EHCI and OHCI share the same clock and power,
+         * resetting twice would cause the 1st controller been reset.
+         * Therefore only do power up  at the first up device, and
+         * power down at the last down device.
+         */
+        if (atomic_dec_return(&usb_pwr_ref) == 0)
+                cns3xxx_pwr_clk_dis(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
+
+        usb_put_hcd(hcd);
+
+        platform_set_drvdata(pdev, NULL);
+
+        return 0;
+}
+
+MODULE_ALIAS("platform:cns3xxx-ehci");
+
+static struct platform_driver cns3xxx_ehci_driver = {
+        .probe = cns3xxx_ehci_probe,
+        .remove = cns3xxx_ehci_remove,
+        .driver = {
+                .name = "cns3xxx-ehci",
+        },
+};
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index e9062806d4a2..d0c8f7c03e05 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1216,6 +1216,11 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER         ehci_octeon_driver
 #endif
 
+#ifdef CONFIG_USB_CNS3XXX_EHCI
+#include "ehci-cns3xxx.c"
+#define PLATFORM_DRIVER         cns3xxx_ehci_driver
+#endif
+
 #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
     !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
     !defined(XILINX_OF_PLATFORM_DRIVER)
diff --git a/drivers/usb/host/ohci-cns3xxx.c b/drivers/usb/host/ohci-cns3xxx.c
new file mode 100644
index 000000000000..f05ef87e934c
--- /dev/null
+++ b/drivers/usb/host/ohci-cns3xxx.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright 2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/atomic.h>
+#include <mach/cns3xxx.h>
+#include <mach/pm.h>
+
+static int __devinit
+cns3xxx_ohci_start(struct usb_hcd *hcd)
+{
+        struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+        int ret;
+
+        /*
+         * EHCI and OHCI share the same clock and power,
+         * resetting twice would cause the 1st controller been reset.
+         * Therefore only do power up  at the first up device, and
+         * power down at the last down device.
+         *
+         * Set USB AHB INCR length to 16
+         */
+        if (atomic_inc_return(&usb_pwr_ref) == 1) {
+                cns3xxx_pwr_power_up(1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_PLL_USB);
+                cns3xxx_pwr_clk_en(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
+                cns3xxx_pwr_soft_rst(1 << PM_SOFT_RST_REG_OFFST_USB_HOST);
+                __raw_writel((__raw_readl(MISC_CHIP_CONFIG_REG) | (0X2 << 24)),
+                        MISC_CHIP_CONFIG_REG);
+        }
+
+        ret = ohci_init(ohci);
+        if (ret < 0)
+                return ret;
+
+        ohci->num_ports = 1;
+
+        ret = ohci_run(ohci);
+        if (ret < 0) {
+                err("can't start %s", hcd->self.bus_name);
+                ohci_stop(hcd);
+                return ret;
+        }
+        return 0;
+}
+
+static const struct hc_driver cns3xxx_ohci_hc_driver = {
+        .description            = hcd_name,
+        .product_desc           = "CNS3XXX OHCI Host controller",
+        .hcd_priv_size          = sizeof(struct ohci_hcd),
+        .irq                    = ohci_irq,
+        .flags                  = HCD_USB11 | HCD_MEMORY,
+        .start                  = cns3xxx_ohci_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,
+};
+
+static int cns3xxx_ohci_probe(struct platform_device *pdev)
+{
+        struct device *dev = &pdev->dev;
+        struct usb_hcd *hcd;
+        const struct hc_driver *driver = &cns3xxx_ohci_hc_driver;
+        struct resource *res;
+        int irq;
+        int retval;
+
+        if (usb_disabled())
+                return -ENODEV;
+
+        res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+        if (!res) {
+                dev_err(dev, "Found HC with no IRQ.\n");
+                return -ENODEV;
+        }
+        irq = res->start;
+
+        hcd = usb_create_hcd(driver, dev, dev_name(dev));
+        if (!hcd)
+                return -ENOMEM;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(dev, "Found HC with no register addr.\n");
+                retval = -ENODEV;
+                goto err1;
+        }
+        hcd->rsrc_start = res->start;
+        hcd->rsrc_len = res->end - res->start + 1;
+
+        if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
+                        driver->description)) {
+                dev_dbg(dev, "controller already in use\n");
+                retval = -EBUSY;
+                goto err1;
+        }
+
+        hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+        if (!hcd->regs) {
+                dev_dbg(dev, "error mapping memory\n");
+                retval = -EFAULT;
+                goto err2;
+        }
+
+        ohci_hcd_init(hcd_to_ohci(hcd));
+
+        retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+        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 int cns3xxx_ohci_remove(struct platform_device *pdev)
+{
+        struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+        usb_remove_hcd(hcd);
+        iounmap(hcd->regs);
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+
+        /*
+         * EHCI and OHCI share the same clock and power,
+         * resetting twice would cause the 1st controller been reset.
+         * Therefore only do power up  at the first up device, and
+         * power down at the last down device.
+         */
+        if (atomic_dec_return(&usb_pwr_ref) == 0)
+                cns3xxx_pwr_clk_dis(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
+
+        usb_put_hcd(hcd);
+
+        platform_set_drvdata(pdev, NULL);
+
+        return 0;
+}
+
+MODULE_ALIAS("platform:cns3xxx-ohci");
+
+static struct platform_driver ohci_hcd_cns3xxx_driver = {
+        .probe = cns3xxx_ohci_probe,
+        .remove = cns3xxx_ohci_remove,
+        .driver = {
+                .name = "cns3xxx-ohci",
+        },
+};
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 5179acb7aa2f..5cb6731ba443 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1111,6 +1111,11 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER         ohci_octeon_driver
 #endif
 
+#ifdef CONFIG_USB_CNS3XXX_OHCI
+#include "ohci-cns3xxx.c"
+#define PLATFORM_DRIVER         ohci_hcd_cns3xxx_driver
+#endif
+
 #if     !defined(PCI_DRIVER) &&         \
         !defined(PLATFORM_DRIVER) &&    \
         !defined(OMAP1_PLATFORM_DRIVER) &&      \