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-rw-r--r--target/linux/xburst/patches-2.6.35/055-ohci.patch326
1 files changed, 326 insertions, 0 deletions
diff --git a/target/linux/xburst/patches-2.6.35/055-ohci.patch b/target/linux/xburst/patches-2.6.35/055-ohci.patch
new file mode 100644
index 0000000000..f41f1d9119
--- /dev/null
+++ b/target/linux/xburst/patches-2.6.35/055-ohci.patch
@@ -0,0 +1,326 @@
+From 4365ef4ae6c7c08950ac34c47f7beaece2dc48ea Mon Sep 17 00:00:00 2001
+From: Lars-Peter Clausen <lars@metafoo.de>
+Date: Sun, 1 Aug 2010 21:13:26 +0200
+Subject: [PATCH] USB: Add JZ4740 OHCI support
+
+Add OHCI glue code for JZ4740 SoCs OHCI module.
+
+Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
+Cc: Greg Kroah-Hartman <gregkh@suse.de>
+Cc: David Brownell <dbrownell@users.sourceforge.net>
+Cc: linux-usb@vger.kernel.org
+Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
+Cc: linux-mips@linux-mips.org
+Cc: linux-kernel@vger.kernel.org
+Patchwork: https://patchwork.linux-mips.org/patch/1411/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ drivers/usb/Kconfig | 1 +
+ drivers/usb/host/ohci-hcd.c | 5 +
+ drivers/usb/host/ohci-jz4740.c | 276 ++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 282 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/usb/host/ohci-jz4740.c
+
+--- a/drivers/usb/Kconfig
++++ b/drivers/usb/Kconfig
+@@ -46,6 +46,7 @@ config USB_ARCH_HAS_OHCI
+ default y if PPC_MPC52xx
+ # MIPS:
+ default y if SOC_AU1X00
++ default y if MACH_JZ4740
+ # SH:
+ default y if CPU_SUBTYPE_SH7720
+ default y if CPU_SUBTYPE_SH7721
+--- 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_MACH_JZ4740
++#include "ohci-jz4740.c"
++#define PLATFORM_DRIVER ohci_hcd_jz4740_driver
++#endif
++
+ #if !defined(PCI_DRIVER) && \
+ !defined(PLATFORM_DRIVER) && \
+ !defined(OMAP1_PLATFORM_DRIVER) && \
+--- /dev/null
++++ b/drivers/usb/host/ohci-jz4740.c
+@@ -0,0 +1,276 @@
++/*
++ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License as published by the
++ * Free Software Foundation; either version 2 of the License, or (at your
++ * option) any later version.
++ *
++ * You should have received a copy of the GNU General Public License along
++ * with this program; if not, write to the Free Software Foundation, Inc.,
++ * 675 Mass Ave, Cambridge, MA 02139, USA.
++ *
++ */
++
++#include <linux/platform_device.h>
++#include <linux/clk.h>
++#include <linux/regulator/consumer.h>
++
++struct jz4740_ohci_hcd {
++ struct ohci_hcd ohci_hcd;
++
++ struct regulator *vbus;
++ bool vbus_enabled;
++ struct clk *clk;
++};
++
++static inline struct jz4740_ohci_hcd *hcd_to_jz4740_hcd(struct usb_hcd *hcd)
++{
++ return (struct jz4740_ohci_hcd *)(hcd->hcd_priv);
++}
++
++static inline struct usb_hcd *jz4740_hcd_to_hcd(struct jz4740_ohci_hcd *jz4740_ohci)
++{
++ return container_of((void *)jz4740_ohci, struct usb_hcd, hcd_priv);
++}
++
++static int ohci_jz4740_start(struct usb_hcd *hcd)
++{
++ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
++ int ret;
++
++ ret = ohci_init(ohci);
++ if (ret < 0)
++ return ret;
++
++ ohci->num_ports = 1;
++
++ ret = ohci_run(ohci);
++ if (ret < 0) {
++ dev_err(hcd->self.controller, "Can not start %s",
++ hcd->self.bus_name);
++ ohci_stop(hcd);
++ return ret;
++ }
++ return 0;
++}
++
++static int ohci_jz4740_set_vbus_power(struct jz4740_ohci_hcd *jz4740_ohci,
++ bool enabled)
++{
++ int ret = 0;
++
++ if (!jz4740_ohci->vbus)
++ return 0;
++
++ if (enabled && !jz4740_ohci->vbus_enabled) {
++ ret = regulator_enable(jz4740_ohci->vbus);
++ if (ret)
++ dev_err(jz4740_hcd_to_hcd(jz4740_ohci)->self.controller,
++ "Could not power vbus\n");
++ } else if (!enabled && jz4740_ohci->vbus_enabled) {
++ ret = regulator_disable(jz4740_ohci->vbus);
++ }
++
++ if (ret == 0)
++ jz4740_ohci->vbus_enabled = enabled;
++
++ return ret;
++}
++
++static int ohci_jz4740_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
++ u16 wIndex, char *buf, u16 wLength)
++{
++ struct jz4740_ohci_hcd *jz4740_ohci = hcd_to_jz4740_hcd(hcd);
++ int ret;
++
++ switch (typeReq) {
++ case SetHubFeature:
++ if (wValue == USB_PORT_FEAT_POWER)
++ ret = ohci_jz4740_set_vbus_power(jz4740_ohci, true);
++ break;
++ case ClearHubFeature:
++ if (wValue == USB_PORT_FEAT_POWER)
++ ret = ohci_jz4740_set_vbus_power(jz4740_ohci, false);
++ break;
++ }
++
++ if (ret)
++ return ret;
++
++ return ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
++}
++
++
++static const struct hc_driver ohci_jz4740_hc_driver = {
++ .description = hcd_name,
++ .product_desc = "JZ4740 OHCI",
++ .hcd_priv_size = sizeof(struct jz4740_ohci_hcd),
++
++ /*
++ * generic hardware linkage
++ */
++ .irq = ohci_irq,
++ .flags = HCD_USB11 | HCD_MEMORY,
++
++ /*
++ * basic lifecycle operations
++ */
++ .start = ohci_jz4740_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_jz4740_hub_control,
++#ifdef CONFIG_PM
++ .bus_suspend = ohci_bus_suspend,
++ .bus_resume = ohci_bus_resume,
++#endif
++ .start_port_reset = ohci_start_port_reset,
++};
++
++
++static __devinit int jz4740_ohci_probe(struct platform_device *pdev)
++{
++ int ret;
++ struct usb_hcd *hcd;
++ struct jz4740_ohci_hcd *jz4740_ohci;
++ struct resource *res;
++ int irq;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++
++ if (!res) {
++ dev_err(&pdev->dev, "Failed to get platform resource\n");
++ return -ENOENT;
++ }
++
++ irq = platform_get_irq(pdev, 0);
++ if (irq < 0) {
++ dev_err(&pdev->dev, "Failed to get platform irq\n");
++ return irq;
++ }
++
++ hcd = usb_create_hcd(&ohci_jz4740_hc_driver, &pdev->dev, "jz4740");
++ if (!hcd) {
++ dev_err(&pdev->dev, "Failed to create hcd.\n");
++ return -ENOMEM;
++ }
++
++ jz4740_ohci = hcd_to_jz4740_hcd(hcd);
++
++ res = request_mem_region(res->start, resource_size(res), hcd_name);
++ if (!res) {
++ dev_err(&pdev->dev, "Failed to request mem region.\n");
++ ret = -EBUSY;
++ goto err_free;
++ }
++
++ hcd->rsrc_start = res->start;
++ hcd->rsrc_len = resource_size(res);
++ hcd->regs = ioremap(res->start, resource_size(res));
++
++ if (!hcd->regs) {
++ dev_err(&pdev->dev, "Failed to ioremap registers.\n");
++ ret = -EBUSY;
++ goto err_release_mem;
++ }
++
++ jz4740_ohci->clk = clk_get(&pdev->dev, "uhc");
++ if (IS_ERR(jz4740_ohci->clk)) {
++ ret = PTR_ERR(jz4740_ohci->clk);
++ dev_err(&pdev->dev, "Failed to get clock: %d\n", ret);
++ goto err_iounmap;
++ }
++
++ jz4740_ohci->vbus = regulator_get(&pdev->dev, "vbus");
++ if (IS_ERR(jz4740_ohci->vbus))
++ jz4740_ohci->vbus = NULL;
++
++
++ clk_set_rate(jz4740_ohci->clk, 48000000);
++ clk_enable(jz4740_ohci->clk);
++ if (jz4740_ohci->vbus)
++ ohci_jz4740_set_vbus_power(jz4740_ohci, true);
++
++ platform_set_drvdata(pdev, hcd);
++
++ ohci_hcd_init(hcd_to_ohci(hcd));
++
++ ret = usb_add_hcd(hcd, irq, 0);
++ if (ret) {
++ dev_err(&pdev->dev, "Failed to add hcd: %d\n", ret);
++ goto err_disable;
++ }
++
++ return 0;
++
++err_disable:
++ platform_set_drvdata(pdev, NULL);
++ if (jz4740_ohci->vbus) {
++ regulator_disable(jz4740_ohci->vbus);
++ regulator_put(jz4740_ohci->vbus);
++ }
++ clk_disable(jz4740_ohci->clk);
++
++ clk_put(jz4740_ohci->clk);
++err_iounmap:
++ iounmap(hcd->regs);
++err_release_mem:
++ release_mem_region(res->start, resource_size(res));
++err_free:
++ usb_put_hcd(hcd);
++
++ return ret;
++}
++
++static __devexit int jz4740_ohci_remove(struct platform_device *pdev)
++{
++ struct usb_hcd *hcd = platform_get_drvdata(pdev);
++ struct jz4740_ohci_hcd *jz4740_ohci = hcd_to_jz4740_hcd(hcd);
++
++ usb_remove_hcd(hcd);
++
++ platform_set_drvdata(pdev, NULL);
++
++ if (jz4740_ohci->vbus) {
++ regulator_disable(jz4740_ohci->vbus);
++ regulator_put(jz4740_ohci->vbus);
++ }
++
++ clk_disable(jz4740_ohci->clk);
++ clk_put(jz4740_ohci->clk);
++
++ iounmap(hcd->regs);
++ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
++
++ usb_put_hcd(hcd);
++
++ return 0;
++}
++
++static struct platform_driver ohci_hcd_jz4740_driver = {
++ .probe = jz4740_ohci_probe,
++ .remove = __devexit_p(jz4740_ohci_remove),
++ .driver = {
++ .name = "jz4740-ohci",
++ .owner = THIS_MODULE,
++ },
++};
++
++MODULE_ALIAS("platfrom:jz4740-ohci");
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