Add support for the Cisco PowerTV USB interface.
This is a very simple set of glue functions, apparently derived some time
ago from the au1xxx driver by Matt Porter.
Signed-off-by: David VomLehn <dvomlehn@xxxxxxxxx>
---
drivers/usb/host/ehci-hcd.c | 5 +
drivers/usb/host/ehci-powertv.c | 196 ++++++++++++++++++++++++++++++++
drivers/usb/host/ohci-hcd.c | 5 +
drivers/usb/host/ohci-powertv.c | 237 +++++++++++++++++++++++++++++++++++++++
4 files changed, 443 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index a3ef2a9..1dca632 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1158,6 +1158,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_atmel_driver
#endif
+#ifdef CONFIG_POWERTV
+#include "ehci-powertv.c"
+#define PLATFORM_DRIVER ehci_hcd_powertv_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/ehci-powertv.c b/drivers/usb/host/ehci-powertv.c
new file mode 100644
index 0000000..92fe201
--- /dev/null
+++ b/drivers/usb/host/ehci-powertv.c
@@ -0,0 +1,196 @@
+/*
+ * EHCI HCD (Host Controller Driver) for USB.
+ *
+ * Bus Glue for PowerTV USB interface
+ *
+ * Based on "ohci-au1xxx.c" by Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
+ *
+ * Modified for AMD Alchemy Au1200 EHC
+ * by K.Boge <karsten.boge@xxxxxxx>
+ * Modified for PowerTV USB interface
+ * by D. VomLehn <dvomlehn@xxxxxxxxx>
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/usb.h>
+#include <asm/mach-powertv/asic.h>
+
+#ifndef CONFIG_POWERTV
+#error "This file is POWERTV bus glue. CONFIG_POWERTV must be defined."
+#endif
+
+static void powertv_start_ehc(struct usb_hcd *hcd)
+{
+ platform_configure_usb_ehci();
+ udelay(10); /* Is this necessary? */
+}
+
+static void powertv_stop_ehc(struct usb_hcd *hcd)
+{
+ platform_unconfigure_usb_ehci();
+ udelay(10); /* Is this necessary? */
+}
+
+static const struct hc_driver ehci_powertv_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "POWERTV EHCI",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ehci_irq,
+ .flags = HCD_MEMORY | HCD_USB2,
+
+ /*
+ * basic lifecycle operations
+ *
+ * FIXME -- ehci_init() doesn't do enough here.
+ * See ehci-ppc-soc for a complete implementation.
+ */
+ .reset = ehci_init,
+ .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,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ehci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+ .bus_suspend = ehci_bus_suspend,
+ .bus_resume = ehci_bus_resume,
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
+};
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+
+/**
+ * usb_hcd_powertv_probe - initialize asic-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ *
+ */
+static int ehci_hcd_powertv_drv_probe(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd;
+ struct ehci_hcd *ehci;
+ int ret;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ if (pdev->resource[1].flags != IORESOURCE_IRQ) {
+ pr_debug("resource[1] is not IORESOURCE_IRQ");
+ return -ENOMEM;
+ }
+ hcd = usb_create_hcd(&ehci_powertv_hc_driver, &pdev->dev,
+ "powertv-ehci");
+ if (!hcd)
+ return -ENOMEM;
+
+ hcd->rsrc_start = pdev->resource[0].start;
+ hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
+
+#ifdef DO_MEMORY_REGION
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ pr_debug("request_mem_region failed");
+ ret = -EBUSY;
+ goto err1;
+ }
+
+#endif
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ pr_debug("ioremap failed");
+ ret = -ENOMEM;
+#ifdef DO_MEMORY_REGION
+ goto err2;
+#else
+ goto err1;
+#endif
+ }
+
+ powertv_start_ehc(hcd);
+
+ ehci = hcd_to_ehci(hcd);
+ ehci->caps = hcd->regs;
+ ehci->regs = hcd->regs +
+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+ /* cache this readonly data; minimize chip reads */
+ ehci->hcs_params = readl(&ehci->caps->hcs_params);
+
+ ret = usb_add_hcd(hcd, pdev->resource[1].start,
+ IRQF_DISABLED | IRQF_SHARED);
+ if (ret == 0) {
+ platform_set_drvdata(pdev, hcd);
+ return ret;
+ }
+
+ powertv_stop_ehc(hcd);
+ iounmap(hcd->regs);
+#ifdef DO_MEMORY_REGION
+err2:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+#endif
+err1:
+ usb_put_hcd(hcd);
+ return ret;
+}
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_powertv_remove - shutdown processing for asic-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_powertv_probe(), first invoking
+ * the HCD's stop() method. It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+static int ehci_hcd_powertv_drv_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);
+ usb_put_hcd(hcd);
+ powertv_stop_ehc(hcd);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver ehci_hcd_powertv_driver = {
+ .probe = ehci_hcd_powertv_drv_probe,
+ .remove = ehci_hcd_powertv_drv_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "powertv-ehci",
+ .owner = THIS_MODULE,
+ }
+};
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index fc57655..86992a0 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1095,6 +1095,11 @@ MODULE_LICENSE ("GPL");
#define TMIO_OHCI_DRIVER ohci_hcd_tmio_driver
#endif
+#ifdef CONFIG_POWERTV
+#include "ohci-powertv.c"
+#define PLATFORM_DRIVER ohci_hcd_powertv_driver
+#endif
+
#if !defined(PCI_DRIVER) && \
!defined(PLATFORM_DRIVER) && \
!defined(OMAP1_PLATFORM_DRIVER) && \
diff --git a/drivers/usb/host/ohci-powertv.c b/drivers/usb/host/ohci-powertv.c
new file mode 100644
index 0000000..1f48ca6
--- /dev/null
+++ b/drivers/usb/host/ohci-powertv.c
@@ -0,0 +1,237 @@
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@xxxxxxxxx>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
+ * (C) Copyright 2002 Hewlett-Packard Company
+ *
+ * Bus Glue for PowerTV USB interface
+ *
+ * Written by Christopher Hoover <ch@xxxxxxxxxx>
+ * Based on fragments of previous driver by Russell King et al.
+ *
+ * Modified for LH7A404 from ohci-sa1111.c
+ * by Durgesh Pattamatta <pattamattad@xxxxxxxxxxxx>
+ * Modified for AMD Alchemy Au1xxx
+ * by Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/usb.h>
+#include <asm/mach-powertv/asic.h>
+
+#ifndef CONFIG_POWERTV
+#error "This file is POWERTV bus glue. CONFIG_POWERTV must be defined."
+#endif
+
+/*
+ * Enable the controller interface
+ */
+static void powertv_start_ohc(struct usb_hcd *hcd)
+{
+ int rc;
+
+ platform_configure_usb_ohci();
+
+ rc = ohci_init(hcd_to_ohci(hcd));
+
+ if (rc == 0) {
+ __hc32 a;
+ struct ohci_hcd *ohci;
+
+ /* ensure the state is one consistent with that expected by the
+ * OHCI-specific driver */
+ ohci = hcd_to_ohci(hcd);
+ a = ohci_readl(ohci, &ohci->regs->roothub.a);
+ a &= ~(RH_A_NOCP | RH_A_NPS);
+ ohci_writel(ohci, a, &ohci->regs->roothub.a);
+ }
+ udelay(10); /* Is this necessary? */
+}
+
+/*
+ * Disable the controller interface
+ */
+static void powertv_stop_ohc(struct usb_hcd *hcd)
+{
+ platform_unconfigure_usb_ohci();
+ udelay(10); /* Is this necessary? */
+}
+
+static int __devinit ohci_powertv_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ ohci_dbg(ohci, "ohci_powertv_start, ohci:%p", ohci);
+
+ 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 const struct hc_driver ohci_powertv_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "POWERTV OHCI",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ohci_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+
+ /*
+ * basic lifecycle operations
+ */
+ .start = ohci_powertv_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ohci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .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,
+};
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+
+/**
+ * usb_hcd_powertv_probe - initialize asic-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ *
+ */
+static int ohci_hcd_powertv_drv_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct usb_hcd *hcd;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ if (pdev->resource[1].flags != IORESOURCE_IRQ) {
+ pr_debug("resource[1] is not IORESOURCE_IRQ\n");
+ return -ENOMEM;
+ }
+
+ hcd = usb_create_hcd(&ohci_powertv_hc_driver, &pdev->dev,
+ "powertv-ohci");
+ if (!hcd)
+ return -ENOMEM;
+
+ hcd->rsrc_start = pdev->resource[0].start;
+ hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
+
+#ifdef DO_MEMORY_REGION
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ pr_debug("request_mem_region failed\n");
+ ret = -EBUSY;
+ goto err1;
+ }
+
+#endif
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ pr_debug("ioremap failed\n");
+ ret = -ENOMEM;
+#ifdef DO_MEMORY_REGION
+ goto err2;
+#else
+ goto err1;
+#endif
+ }
+
+ powertv_start_ohc(hcd);
+ ohci_hcd_init(hcd_to_ohci(hcd));
+
+ ret = usb_add_hcd(hcd, pdev->resource[1].start,
+ IRQF_DISABLED | IRQF_SHARED);
+ if (ret == 0) {
+ platform_set_drvdata(pdev, hcd);
+ return ret;
+ }
+
+ powertv_stop_ohc(hcd);
+ iounmap(hcd->regs);
+#ifdef DO_MEMORY_REGION
+err2:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+#endif
+err1:
+ usb_put_hcd(hcd);
+ return ret;
+}
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_powertv_drv_remove - shutdown processing for asic-based HCDs
+ * @pdev: Pointer to platform device for USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_powertv_probe(), first invoking
+ * the HCD's stop() method. It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+static int ohci_hcd_powertv_drv_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_remove_hcd(hcd);
+ powertv_stop_ohc(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver ohci_hcd_powertv_driver = {
+ .probe = ohci_hcd_powertv_drv_probe,
+ .remove = ohci_hcd_powertv_drv_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "powertv-ohci",
+ .owner = THIS_MODULE,
+ },
+};
