mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-10 12:27:30 +02:00
e0e5bd88de
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22463 3c298f89-4303-0410-b956-a3cf2f4a3e73
327 lines
7.9 KiB
Diff
327 lines
7.9 KiB
Diff
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");
|