Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 377 insertions, 0 deletions

diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
new file mode 100644
index 00000000..e669c6a7
--- /dev/null
+++ b/drivers/usb/host/ehci-omap.c
@@ -0,0 +1,377 @@
+/*
+ * ehci-omap.c - driver for USBHOST on OMAP3/4 processors
+ *
+ * Bus Glue for the EHCI controllers in OMAP3/4
+ * Tested on several OMAP3 boards, and OMAP4 Pandaboard
+ *
+ * Copyright (C) 2007-2011 Texas Instruments, Inc.
+ *	Author: Vikram Pandita <vikram.pandita@ti.com>
+ *	Author: Anand Gadiyar <gadiyar@ti.com>
+ *	Author: Keshava Munegowda <keshava_mgowda@ti.com>
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ *	Contact: Felipe Balbi <felipe.balbi@nokia.com>
+ *
+ * Based on "ehci-fsl.c" and "ehci-au1xxx.c" ehci glue layers
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ * TODO (last updated Feb 27, 2010):
+ *	- add kernel-doc
+ *	- enable AUTOIDLE
+ *	- add suspend/resume
+ *	- add HSIC and TLL support
+ *	- convert to use hwmod and runtime PM
+ */
+
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/usb/ulpi.h>
+#include <plat/usb.h>
+#include <linux/regulator/consumer.h>
+#include <linux/pm_runtime.h>
+#include <linux/gpio.h>
+
+/* EHCI Register Set */
+#define EHCI_INSNREG04					(0xA0)
+#define EHCI_INSNREG04_DISABLE_UNSUSPEND		(1 << 5)
+#define	EHCI_INSNREG05_ULPI				(0xA4)
+#define	EHCI_INSNREG05_ULPI_CONTROL_SHIFT		31
+#define	EHCI_INSNREG05_ULPI_PORTSEL_SHIFT		24
+#define	EHCI_INSNREG05_ULPI_OPSEL_SHIFT			22
+#define	EHCI_INSNREG05_ULPI_REGADD_SHIFT		16
+#define	EHCI_INSNREG05_ULPI_EXTREGADD_SHIFT		8
+#define	EHCI_INSNREG05_ULPI_WRDATA_SHIFT		0
+
+/*-------------------------------------------------------------------------*/
+
+static const struct hc_driver ehci_omap_hc_driver;
+
+
+static inline void ehci_write(void __iomem *base, u32 reg, u32 val)
+{
+	__raw_writel(val, base + reg);
+}
+
+static inline u32 ehci_read(void __iomem *base, u32 reg)
+{
+	return __raw_readl(base + reg);
+}
+
+static void omap_ehci_soft_phy_reset(struct platform_device *pdev, u8 port)
+{
+	struct usb_hcd	*hcd = dev_get_drvdata(&pdev->dev);
+	unsigned long timeout = jiffies + msecs_to_jiffies(1000);
+	unsigned reg = 0;
+
+	reg = ULPI_FUNC_CTRL_RESET
+		/* FUNCTION_CTRL_SET register */
+		| (ULPI_SET(ULPI_FUNC_CTRL) << EHCI_INSNREG05_ULPI_REGADD_SHIFT)
+		/* Write */
+		| (2 << EHCI_INSNREG05_ULPI_OPSEL_SHIFT)
+		/* PORTn */
+		| ((port + 1) << EHCI_INSNREG05_ULPI_PORTSEL_SHIFT)
+		/* start ULPI access*/
+		| (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT);
+
+	ehci_write(hcd->regs, EHCI_INSNREG05_ULPI, reg);
+
+	/* Wait for ULPI access completion */
+	while ((ehci_read(hcd->regs, EHCI_INSNREG05_ULPI)
+			& (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT))) {
+		cpu_relax();
+
+		if (time_after(jiffies, timeout)) {
+			dev_dbg(&pdev->dev, "phy reset operation timed out\n");
+			break;
+		}
+	}
+}
+
+static void disable_put_regulator(
+		struct ehci_hcd_omap_platform_data *pdata)
+{
+	int i;
+
+	for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+		if (pdata->regulator[i]) {
+			regulator_disable(pdata->regulator[i]);
+			regulator_put(pdata->regulator[i]);
+		}
+	}
+}
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+/**
+ * ehci_hcd_omap_probe - initialize TI-based HCDs
+ *
+ * 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_omap_probe(struct platform_device *pdev)
+{
+	struct device				*dev = &pdev->dev;
+	struct ehci_hcd_omap_platform_data	*pdata = dev->platform_data;
+	struct resource				*res;
+	struct usb_hcd				*hcd;
+	void __iomem				*regs;
+	struct ehci_hcd				*omap_ehci;
+	int					ret = -ENODEV;
+	int					irq;
+	int					i;
+	char					supply[7];
+
+	if (usb_disabled())
+		return -ENODEV;
+
+	if (!dev->parent) {
+		dev_err(dev, "Missing parent device\n");
+		return -ENODEV;
+	}
+
+	irq = platform_get_irq_byname(pdev, "ehci-irq");
+	if (irq < 0) {
+		dev_err(dev, "EHCI irq failed\n");
+		return -ENODEV;
+	}
+
+	res =  platform_get_resource_byname(pdev,
+				IORESOURCE_MEM, "ehci");
+	if (!res) {
+		dev_err(dev, "UHH EHCI get resource failed\n");
+		return -ENODEV;
+	}
+
+	regs = ioremap(res->start, resource_size(res));
+	if (!regs) {
+		dev_err(dev, "UHH EHCI ioremap failed\n");
+		return -ENOMEM;
+	}
+
+	hcd = usb_create_hcd(&ehci_omap_hc_driver, dev,
+			dev_name(dev));
+	if (!hcd) {
+		dev_err(dev, "failed to create hcd with err %d\n", ret);
+		ret = -ENOMEM;
+		goto err_io;
+	}
+
+	hcd->rsrc_start = res->start;
+	hcd->rsrc_len = resource_size(res);
+	hcd->regs = regs;
+
+	/* get ehci regulator and enable */
+	for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+		if (pdata->port_mode[i] != OMAP_EHCI_PORT_MODE_PHY) {
+			pdata->regulator[i] = NULL;
+			continue;
+		}
+		snprintf(supply, sizeof(supply), "hsusb%d", i);
+		pdata->regulator[i] = regulator_get(dev, supply);
+		if (IS_ERR(pdata->regulator[i])) {
+			pdata->regulator[i] = NULL;
+			dev_dbg(dev,
+			"failed to get ehci port%d regulator\n", i);
+		} else {
+			regulator_enable(pdata->regulator[i]);
+		}
+	}
+
+	if (pdata->phy_reset) {
+		if (gpio_is_valid(pdata->reset_gpio_port[0]))
+			gpio_request_one(pdata->reset_gpio_port[0],
+					 GPIOF_OUT_INIT_LOW, "USB1 PHY reset");
+
+		if (gpio_is_valid(pdata->reset_gpio_port[1]))
+			gpio_request_one(pdata->reset_gpio_port[1],
+					 GPIOF_OUT_INIT_LOW, "USB2 PHY reset");
+
+		/* Hold the PHY in RESET for enough time till DIR is high */
+		udelay(10);
+	}
+
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
+
+	/*
+	 * An undocumented "feature" in the OMAP3 EHCI controller,
+	 * causes suspended ports to be taken out of suspend when
+	 * the USBCMD.Run/Stop bit is cleared (for example when
+	 * we do ehci_bus_suspend).
+	 * This breaks suspend-resume if the root-hub is allowed
+	 * to suspend. Writing 1 to this undocumented register bit
+	 * disables this feature and restores normal behavior.
+	 */
+	ehci_write(regs, EHCI_INSNREG04,
+				EHCI_INSNREG04_DISABLE_UNSUSPEND);
+
+	/* Soft reset the PHY using PHY reset command over ULPI */
+	if (pdata->port_mode[0] == OMAP_EHCI_PORT_MODE_PHY)
+		omap_ehci_soft_phy_reset(pdev, 0);
+	if (pdata->port_mode[1] == OMAP_EHCI_PORT_MODE_PHY)
+		omap_ehci_soft_phy_reset(pdev, 1);
+
+	omap_ehci = hcd_to_ehci(hcd);
+	omap_ehci->sbrn = 0x20;
+
+	/* we know this is the memory we want, no need to ioremap again */
+	omap_ehci->caps = hcd->regs;
+	omap_ehci->regs = hcd->regs
+		+ HC_LENGTH(ehci, readl(&omap_ehci->caps->hc_capbase));
+
+	dbg_hcs_params(omap_ehci, "reset");
+	dbg_hcc_params(omap_ehci, "reset");
+
+	/* cache this readonly data; minimize chip reads */
+	omap_ehci->hcs_params = readl(&omap_ehci->caps->hcs_params);
+
+	ehci_reset(omap_ehci);
+
+	if (pdata->phy_reset) {
+		/* Hold the PHY in RESET for enough time till
+		 * PHY is settled and ready
+		 */
+		udelay(10);
+
+		if (gpio_is_valid(pdata->reset_gpio_port[0]))
+			gpio_set_value(pdata->reset_gpio_port[0], 1);
+
+		if (gpio_is_valid(pdata->reset_gpio_port[1]))
+			gpio_set_value(pdata->reset_gpio_port[1], 1);
+	}
+
+	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
+	if (ret) {
+		dev_err(dev, "failed to add hcd with err %d\n", ret);
+		goto err_add_hcd;
+	}
+
+	/* root ports should always stay powered */
+	ehci_port_power(omap_ehci, 1);
+
+	return 0;
+
+err_add_hcd:
+	disable_put_regulator(pdata);
+	pm_runtime_put_sync(dev);
+
+err_io:
+	iounmap(regs);
+	return ret;
+}
+
+
+/**
+ * ehci_hcd_omap_remove - shutdown processing for EHCI HCDs
+ * @pdev: USB Host Controller being removed
+ *
+ * Reverses the effect of usb_ehci_hcd_omap_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_omap_remove(struct platform_device *pdev)
+{
+	struct device *dev				= &pdev->dev;
+	struct usb_hcd *hcd				= dev_get_drvdata(dev);
+	struct ehci_hcd_omap_platform_data *pdata	= dev->platform_data;
+
+	usb_remove_hcd(hcd);
+	disable_put_regulator(dev->platform_data);
+	iounmap(hcd->regs);
+	usb_put_hcd(hcd);
+	pm_runtime_put_sync(dev);
+	pm_runtime_disable(dev);
+
+	if (pdata->phy_reset) {
+		if (gpio_is_valid(pdata->reset_gpio_port[0]))
+			gpio_free(pdata->reset_gpio_port[0]);
+
+		if (gpio_is_valid(pdata->reset_gpio_port[1]))
+			gpio_free(pdata->reset_gpio_port[1]);
+	}
+	return 0;
+}
+
+static void ehci_hcd_omap_shutdown(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev);
+
+	if (hcd->driver->shutdown)
+		hcd->driver->shutdown(hcd);
+}
+
+static struct platform_driver ehci_hcd_omap_driver = {
+	.probe			= ehci_hcd_omap_probe,
+	.remove			= ehci_hcd_omap_remove,
+	.shutdown		= ehci_hcd_omap_shutdown,
+	/*.suspend		= ehci_hcd_omap_suspend, */
+	/*.resume		= ehci_hcd_omap_resume, */
+	.driver = {
+		.name		= "ehci-omap",
+	}
+};
+
+/*-------------------------------------------------------------------------*/
+
+static const struct hc_driver ehci_omap_hc_driver = {
+	.description		= hcd_name,
+	.product_desc		= "OMAP-EHCI Host Controller",
+	.hcd_priv_size		= sizeof(struct ehci_hcd),
+
+	/*
+	 * generic hardware linkage
+	 */
+	.irq			= ehci_irq,
+	.flags			= HCD_MEMORY | HCD_USB2,
+
+	/*
+	 * basic lifecycle operations
+	 */
+	.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,
+	.endpoint_reset		= ehci_endpoint_reset,
+
+	/*
+	 * 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,
+
+	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+MODULE_ALIAS("platform:omap-ehci");
+MODULE_AUTHOR("Texas Instruments, Inc.");
+MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>");
+