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path: root/target/linux/cns21xx/patches-2.6.37/103-cns21xx-usb-ohci-support.patch
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Diffstat (limited to 'target/linux/cns21xx/patches-2.6.37/103-cns21xx-usb-ohci-support.patch')
-rw-r--r--target/linux/cns21xx/patches-2.6.37/103-cns21xx-usb-ohci-support.patch230
1 files changed, 230 insertions, 0 deletions
diff --git a/target/linux/cns21xx/patches-2.6.37/103-cns21xx-usb-ohci-support.patch b/target/linux/cns21xx/patches-2.6.37/103-cns21xx-usb-ohci-support.patch
new file mode 100644
index 0000000000..1299ca40ba
--- /dev/null
+++ b/target/linux/cns21xx/patches-2.6.37/103-cns21xx-usb-ohci-support.patch
@@ -0,0 +1,230 @@
+--- a/drivers/usb/host/ohci-hcd.c
++++ b/drivers/usb/host/ohci-hcd.c
+@@ -589,7 +589,6 @@ static int ohci_run (struct ohci_hcd *oh
+
+ /* boot firmware should have set this up (5.1.1.3.1) */
+ if (first) {
+-
+ val = ohci_readl (ohci, &ohci->regs->fminterval);
+ ohci->fminterval = val & 0x3fff;
+ if (ohci->fminterval != FI)
+@@ -673,6 +672,9 @@ retry:
+
+ periodic_reinit (ohci);
+
++ if (ohci->flags & OHCI_QUIRK_INIT_FMINTERVAL)
++ ohci_writel (ohci, ohci->fminterval, &ohci->regs->fminterval);
++
+ /* some OHCI implementations are finicky about how they init.
+ * bogus values here mean not even enumeration could work.
+ */
+@@ -1067,6 +1069,11 @@ MODULE_LICENSE ("GPL");
+ #define PLATFORM_DRIVER ohci_hcd_da8xx_driver
+ #endif
+
++#ifdef CONFIG_ARCH_CNS21XX
++#include "ohci-cns21xx.c"
++#define PLATFORM_DRIVER ohci_cns21xx_driver
++#endif
++
+ #if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7721) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7763) || \
+--- /dev/null
++++ b/drivers/usb/host/ohci-cns21xx.c
+@@ -0,0 +1,175 @@
++/*
++ * Copyright (c) 2008 Cavium Networks
++ * Copyright (c) 2010 Gabor Juhos <juhosg@openwrt.org>
++ *
++ * 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 <mach/cns21xx.h>
++
++#define DRIVER_NAME "cns21xx-ohci"
++
++static int __devinit cns21xx_ohci_start(struct usb_hcd *hcd)
++{
++ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
++ int ret;
++
++ ret = ohci_init(ohci);
++ if (ret)
++ return ret;
++
++ ret = ohci_run(ohci);
++ if (ret) {
++ err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
++ goto err;
++ }
++
++ return 0;
++
++err:
++ ohci_stop(hcd);
++ return ret;
++}
++
++static const struct hc_driver ohci_cns21xx_hc_driver = {
++ .description = hcd_name,
++ .product_desc = "cns21xx-ohci",
++ .hcd_priv_size = sizeof(struct ohci_hcd),
++
++ /*
++ * generic hardware linkage
++ */
++ .irq = ohci_irq,
++ .flags = HCD_USB11 | HCD_MEMORY,
++
++ /*
++ * basic lifecycle operations
++ */
++ .start = cns21xx_ohci_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,
++ .start_port_reset = ohci_start_port_reset,
++};
++
++static void cns21xx_ohci_init_hc(void)
++{
++ __raw_writel(0x146, CNS21XX_OHCI_CONFIG_BASE_VIRT + 0x04);
++ __raw_writel(0x200, CNS21XX_OHCI_CONFIG_BASE_VIRT + 0x44);
++ msleep(100);
++}
++
++static int ohci_cns21xx_probe(struct platform_device *pdev)
++{
++ struct usb_hcd *hcd;
++ struct resource *res;
++ struct ohci_hcd *ohci;
++ int irq;
++ int ret;
++
++ if (usb_disabled())
++ return -ENODEV;
++
++ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
++ if (!res) {
++ dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
++ dev_name(&pdev->dev));
++ return -ENODEV;
++ }
++ irq = res->start;
++
++ hcd = usb_create_hcd(&ohci_cns21xx_hc_driver, &pdev->dev,
++ dev_name(&pdev->dev));
++ if (!hcd)
++ return -ENOMEM;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!res) {
++ dev_dbg(&pdev->dev, "no base address specified for %s\n",
++ dev_name(&pdev->dev));
++ ret = -ENODEV;
++ goto err_put_hcd;
++ }
++ hcd->rsrc_start = res->start;
++ hcd->rsrc_len = res->end - res->start + 1;
++
++ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
++ dev_dbg(&pdev->dev, "controller already in use\n");
++ ret = -EBUSY;
++ goto err_put_hcd;
++ }
++
++ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
++ if (!hcd->regs) {
++ dev_dbg(&pdev->dev, "error mapping memory\n");
++ ret = -EFAULT;
++ goto err_release_region;
++ }
++
++ cns21xx_ohci_init_hc();
++
++ ohci = hcd_to_ohci(hcd);
++ ohci->flags |= OHCI_QUIRK_INIT_FMINTERVAL;
++ ohci_hcd_init(ohci);
++
++ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
++ if (ret)
++ goto err_unmap;
++
++ platform_set_drvdata(pdev, hcd);
++ return 0;
++
++err_unmap:
++ iounmap(hcd->regs);
++err_release_region:
++ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
++err_put_hcd:
++ usb_put_hcd(hcd);
++ return ret;
++}
++
++static int ohci_cns21xx_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);
++ platform_set_drvdata(pdev, NULL);
++
++ return 0;
++}
++
++static struct platform_driver ohci_cns21xx_driver = {
++ .probe = ohci_cns21xx_probe,
++ .remove = ohci_cns21xx_remove,
++ .shutdown = usb_hcd_platform_shutdown,
++ .driver = {
++ .owner = THIS_MODULE,
++ .name = DRIVER_NAME,
++ },
++};
++
++MODULE_ALIAS("platform:" DRIVER_NAME);
+--- a/drivers/usb/host/ohci.h
++++ b/drivers/usb/host/ohci.h
+@@ -404,6 +404,7 @@ struct ohci_hcd {
+ #define OHCI_QUIRK_AMD_ISO 0x200 /* ISO transfers*/
+ #define OHCI_QUIRK_AMD_PREFETCH 0x400 /* pre-fetch for ISO transfer */
+ #define OHCI_QUIRK_SHUTDOWN 0x800 /* nVidia power bug */
++#define OHCI_QUIRK_INIT_FMINTERVAL 0x1000 /* fminterval must be initialized */
+ // there are also chip quirks/bugs in init logic
+
+ struct work_struct nec_work; /* Worker for NEC quirk */
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -299,6 +299,7 @@ config ARCH_CNS21XX
+ select PLAT_FA_GPIO
+ select ARCH_REQUIRE_GPIOLIB
+ select ARM_L1_CACHE_SHIFT_4
++ select USB_ARCH_HAS_OHCI
+ help
+ Support for Cavium Networks CNS21xx family.
+