Commit 1e7fe1a9 authored by Keshava Munegowda's avatar Keshava Munegowda Committed by Paul Walmsley
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MFD: OMAP: USB: Runtime PM support 



The usbhs core driver does not enable/disable the interface and
functional clocks directly, These clocks are handled by runtime pm,
hence instead of the clock enable/disable, the runtime pm APIS are
used. however,the optional clocks and port clocks are handled by
the usbhs core.

Dependency:
This patch is dependent on this series:
[PATCH 0/5 v13 or latest version] omap: usb: host: Runtime PM preparation
for EHCI and OHCI drivers.

Validation performed:
The global suspend/resume of EHCI and OHCI is validated on
OMAP3430 sdp board with this patch combined with the series:
[PATCH 0/5 v13 or latest version] omap: usb: host: Runtime PM preparation
for EHCI and OHCI drivers.

Signed-off-by: default avatarKeshava Munegowda <keshava_mgowda@ti.com>
Reviewed-by: default avatarKevin Hilman <khilman@ti.com>
Reviewed-by: default avatarPartha Basak <parthab@india.ti.com>
Acked-by: default avatarFelipe Balbi <balbi@ti.com>
Acked-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: default avatarPaul Walmsley <paul@pwsan.com>
parent 6c984b06

drivers/mfd/omap-usb-host.c

+303 −450
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ 
#include <linux/spinlock.h>

#include <linux/gpio.h>

#include <plat/usb.h>

#include <linux/pm_runtime.h>



#define USBHS_DRIVER_NAME	"usbhs_omap"

#define OMAP_EHCI_DEVICE	"ehci-omap"
@@ -147,9 +148,6 @@ 




struct usbhs_hcd_omap {

	struct clk			*usbhost_ick;

	struct clk			*usbhost_hs_fck;

	struct clk			*usbhost_fs_fck;

	struct clk			*xclk60mhsp1_ck;

	struct clk			*xclk60mhsp2_ck;

	struct clk			*utmi_p1_fck;
@@ -159,8 +157,7 @@ struct usbhs_hcd_omap { 
	struct clk			*usbhost_p2_fck;

	struct clk			*usbtll_p2_fck;

	struct clk			*init_60m_fclk;

	struct clk			*usbtll_fck;

	struct clk			*usbtll_ick;

	struct clk			*ehci_logic_fck;



	void __iomem			*uhh_base;

	void __iomem			*tll_base;
@@ -169,7 +166,6 @@ struct usbhs_hcd_omap { 


	u32				usbhs_rev;

	spinlock_t			lock;

	int				count;

};

/*-------------------------------------------------------------------------*/
@@ -319,269 +315,6 @@ err_end: 
	return ret;

}



/**

 * usbhs_omap_probe - initialize TI-based HCDs

 *

 * Allocates basic resources for this USB host controller.

 */

static int __devinit usbhs_omap_probe(struct platform_device *pdev)

{

	struct device			*dev =  &pdev->dev;

	struct usbhs_omap_platform_data	*pdata = dev->platform_data;

	struct usbhs_hcd_omap		*omap;

	struct resource			*res;

	int				ret = 0;

	int				i;



	if (!pdata) {

		dev_err(dev, "Missing platform data\n");

		ret = -ENOMEM;

		goto end_probe;

	}



	omap = kzalloc(sizeof(*omap), GFP_KERNEL);

	if (!omap) {

		dev_err(dev, "Memory allocation failed\n");

		ret = -ENOMEM;

		goto end_probe;

	}



	spin_lock_init(&omap->lock);



	for (i = 0; i < OMAP3_HS_USB_PORTS; i++)

		omap->platdata.port_mode[i] = pdata->port_mode[i];



	omap->platdata.ehci_data = pdata->ehci_data;

	omap->platdata.ohci_data = pdata->ohci_data;



	omap->usbhost_ick = clk_get(dev, "usbhost_ick");

	if (IS_ERR(omap->usbhost_ick)) {

		ret =  PTR_ERR(omap->usbhost_ick);

		dev_err(dev, "usbhost_ick failed error:%d\n", ret);

		goto err_end;

	}



	omap->usbhost_hs_fck = clk_get(dev, "hs_fck");

	if (IS_ERR(omap->usbhost_hs_fck)) {

		ret = PTR_ERR(omap->usbhost_hs_fck);

		dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);

		goto err_usbhost_ick;

	}



	omap->usbhost_fs_fck = clk_get(dev, "fs_fck");

	if (IS_ERR(omap->usbhost_fs_fck)) {

		ret = PTR_ERR(omap->usbhost_fs_fck);

		dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);

		goto err_usbhost_hs_fck;

	}



	omap->usbtll_fck = clk_get(dev, "usbtll_fck");

	if (IS_ERR(omap->usbtll_fck)) {

		ret = PTR_ERR(omap->usbtll_fck);

		dev_err(dev, "usbtll_fck failed error:%d\n", ret);

		goto err_usbhost_fs_fck;

	}



	omap->usbtll_ick = clk_get(dev, "usbtll_ick");

	if (IS_ERR(omap->usbtll_ick)) {

		ret = PTR_ERR(omap->usbtll_ick);

		dev_err(dev, "usbtll_ick failed error:%d\n", ret);

		goto err_usbtll_fck;

	}



	omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");

	if (IS_ERR(omap->utmi_p1_fck)) {

		ret = PTR_ERR(omap->utmi_p1_fck);

		dev_err(dev, "utmi_p1_gfclk failed error:%d\n",	ret);

		goto err_usbtll_ick;

	}



	omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");

	if (IS_ERR(omap->xclk60mhsp1_ck)) {

		ret = PTR_ERR(omap->xclk60mhsp1_ck);

		dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);

		goto err_utmi_p1_fck;

	}



	omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");

	if (IS_ERR(omap->utmi_p2_fck)) {

		ret = PTR_ERR(omap->utmi_p2_fck);

		dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);

		goto err_xclk60mhsp1_ck;

	}



	omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");

	if (IS_ERR(omap->xclk60mhsp2_ck)) {

		ret = PTR_ERR(omap->xclk60mhsp2_ck);

		dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);

		goto err_utmi_p2_fck;

	}



	omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");

	if (IS_ERR(omap->usbhost_p1_fck)) {

		ret = PTR_ERR(omap->usbhost_p1_fck);

		dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);

		goto err_xclk60mhsp2_ck;

	}



	omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");

	if (IS_ERR(omap->usbtll_p1_fck)) {

		ret = PTR_ERR(omap->usbtll_p1_fck);

		dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);

		goto err_usbhost_p1_fck;

	}



	omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");

	if (IS_ERR(omap->usbhost_p2_fck)) {

		ret = PTR_ERR(omap->usbhost_p2_fck);

		dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);

		goto err_usbtll_p1_fck;

	}



	omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");

	if (IS_ERR(omap->usbtll_p2_fck)) {

		ret = PTR_ERR(omap->usbtll_p2_fck);

		dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);

		goto err_usbhost_p2_fck;

	}



	omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");

	if (IS_ERR(omap->init_60m_fclk)) {

		ret = PTR_ERR(omap->init_60m_fclk);

		dev_err(dev, "init_60m_fclk failed error:%d\n", ret);

		goto err_usbtll_p2_fck;

	}



	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");

	if (!res) {

		dev_err(dev, "UHH EHCI get resource failed\n");

		ret = -ENODEV;

		goto err_init_60m_fclk;

	}



	omap->uhh_base = ioremap(res->start, resource_size(res));

	if (!omap->uhh_base) {

		dev_err(dev, "UHH ioremap failed\n");

		ret = -ENOMEM;

		goto err_init_60m_fclk;

	}



	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");

	if (!res) {

		dev_err(dev, "UHH EHCI get resource failed\n");

		ret = -ENODEV;

		goto err_tll;

	}



	omap->tll_base = ioremap(res->start, resource_size(res));

	if (!omap->tll_base) {

		dev_err(dev, "TLL ioremap failed\n");

		ret = -ENOMEM;

		goto err_tll;

	}



	platform_set_drvdata(pdev, omap);



	ret = omap_usbhs_alloc_children(pdev);

	if (ret) {

		dev_err(dev, "omap_usbhs_alloc_children failed\n");

		goto err_alloc;

	}



	goto end_probe;



err_alloc:

	iounmap(omap->tll_base);



err_tll:

	iounmap(omap->uhh_base);



err_init_60m_fclk:

	clk_put(omap->init_60m_fclk);



err_usbtll_p2_fck:

	clk_put(omap->usbtll_p2_fck);



err_usbhost_p2_fck:

	clk_put(omap->usbhost_p2_fck);



err_usbtll_p1_fck:

	clk_put(omap->usbtll_p1_fck);



err_usbhost_p1_fck:

	clk_put(omap->usbhost_p1_fck);



err_xclk60mhsp2_ck:

	clk_put(omap->xclk60mhsp2_ck);



err_utmi_p2_fck:

	clk_put(omap->utmi_p2_fck);



err_xclk60mhsp1_ck:

	clk_put(omap->xclk60mhsp1_ck);



err_utmi_p1_fck:

	clk_put(omap->utmi_p1_fck);



err_usbtll_ick:

	clk_put(omap->usbtll_ick);



err_usbtll_fck:

	clk_put(omap->usbtll_fck);



err_usbhost_fs_fck:

	clk_put(omap->usbhost_fs_fck);



err_usbhost_hs_fck:

	clk_put(omap->usbhost_hs_fck);



err_usbhost_ick:

	clk_put(omap->usbhost_ick);



err_end:

	kfree(omap);



end_probe:

	return ret;

}



/**

 * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs

 * @pdev: USB Host Controller being removed

 *

 * Reverses the effect of usbhs_omap_probe().

 */

static int __devexit usbhs_omap_remove(struct platform_device *pdev)

{

	struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);



	if (omap->count != 0) {

		dev_err(&pdev->dev,

			"Either EHCI or OHCI is still using usbhs core\n");

		return -EBUSY;

	}



	iounmap(omap->tll_base);

	iounmap(omap->uhh_base);

	clk_put(omap->init_60m_fclk);

	clk_put(omap->usbtll_p2_fck);

	clk_put(omap->usbhost_p2_fck);

	clk_put(omap->usbtll_p1_fck);

	clk_put(omap->usbhost_p1_fck);

	clk_put(omap->xclk60mhsp2_ck);

	clk_put(omap->utmi_p2_fck);

	clk_put(omap->xclk60mhsp1_ck);

	clk_put(omap->utmi_p1_fck);

	clk_put(omap->usbtll_ick);

	clk_put(omap->usbtll_fck);

	clk_put(omap->usbhost_fs_fck);

	clk_put(omap->usbhost_hs_fck);

	clk_put(omap->usbhost_ick);

	kfree(omap);



	return 0;

}



static bool is_ohci_port(enum usbhs_omap_port_mode pmode)

{

	switch (pmode) {
@@ -689,96 +422,107 @@ static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count) 
	}

}



static int usbhs_enable(struct device *dev)

static int usbhs_runtime_resume(struct device *dev)

{

	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);

	struct usbhs_omap_platform_data	*pdata = &omap->platdata;

	unsigned long			flags = 0;

	int				ret = 0;

	unsigned long			timeout;

	unsigned			reg;

	unsigned long			flags;



	dev_dbg(dev, "usbhs_runtime_resume\n");



	dev_dbg(dev, "starting TI HSUSB Controller\n");

	if (!pdata) {

		dev_dbg(dev, "missing platform_data\n");

		return  -ENODEV;

	}



	spin_lock_irqsave(&omap->lock, flags);

	if (omap->count > 0)

		goto end_count;



	clk_enable(omap->usbhost_ick);

	clk_enable(omap->usbhost_hs_fck);

	clk_enable(omap->usbhost_fs_fck);

	clk_enable(omap->usbtll_fck);

	clk_enable(omap->usbtll_ick);



	if (pdata->ehci_data->phy_reset) {

		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {

			gpio_request(pdata->ehci_data->reset_gpio_port[0],

						"USB1 PHY reset");

			gpio_direction_output

				(pdata->ehci_data->reset_gpio_port[0], 0);

		}

	if (omap->ehci_logic_fck && !IS_ERR(omap->ehci_logic_fck))

		clk_enable(omap->ehci_logic_fck);



		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) {

			gpio_request(pdata->ehci_data->reset_gpio_port[1],

						"USB2 PHY reset");

			gpio_direction_output

				(pdata->ehci_data->reset_gpio_port[1], 0);

	if (is_ehci_tll_mode(pdata->port_mode[0])) {

		clk_enable(omap->usbhost_p1_fck);

		clk_enable(omap->usbtll_p1_fck);

	}



		/* Hold the PHY in RESET for enough time till DIR is high */

		udelay(10);

	if (is_ehci_tll_mode(pdata->port_mode[1])) {

		clk_enable(omap->usbhost_p2_fck);

		clk_enable(omap->usbtll_p2_fck);

	}

	clk_enable(omap->utmi_p1_fck);

	clk_enable(omap->utmi_p2_fck);



	omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);

	dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);



	/* perform TLL soft reset, and wait until reset is complete */

	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,

			OMAP_USBTLL_SYSCONFIG_SOFTRESET);



	/* Wait for TLL reset to complete */

	timeout = jiffies + msecs_to_jiffies(1000);

	while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)

			& OMAP_USBTLL_SYSSTATUS_RESETDONE)) {

		cpu_relax();

	spin_unlock_irqrestore(&omap->lock, flags);



		if (time_after(jiffies, timeout)) {

			dev_dbg(dev, "operation timed out\n");

			ret = -EINVAL;

			goto err_tll;

		}

	return 0;

}



	dev_dbg(dev, "TLL RESET DONE\n");

static int usbhs_runtime_suspend(struct device *dev)

{

	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);

	struct usbhs_omap_platform_data	*pdata = &omap->platdata;

	unsigned long			flags;



	/* (1<<3) = no idle mode only for initial debugging */

	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,

			OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |

			OMAP_USBTLL_SYSCONFIG_SIDLEMODE |

			OMAP_USBTLL_SYSCONFIG_AUTOIDLE);

	dev_dbg(dev, "usbhs_runtime_suspend\n");



	/* Put UHH in NoIdle/NoStandby mode */

	reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);

	if (is_omap_usbhs_rev1(omap)) {

		reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP

				| OMAP_UHH_SYSCONFIG_SIDLEMODE

				| OMAP_UHH_SYSCONFIG_CACTIVITY

				| OMAP_UHH_SYSCONFIG_MIDLEMODE);

		reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;

	if (!pdata) {

		dev_dbg(dev, "missing platform_data\n");

		return  -ENODEV;

	}



	spin_lock_irqsave(&omap->lock, flags);



	} else if (is_omap_usbhs_rev2(omap)) {

		reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;

		reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;

		reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;

		reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;

	if (is_ehci_tll_mode(pdata->port_mode[0])) {

		clk_disable(omap->usbhost_p1_fck);

		clk_disable(omap->usbtll_p1_fck);

	}

	if (is_ehci_tll_mode(pdata->port_mode[1])) {

		clk_disable(omap->usbhost_p2_fck);

		clk_disable(omap->usbtll_p2_fck);

	}

	clk_disable(omap->utmi_p2_fck);

	clk_disable(omap->utmi_p1_fck);



	if (omap->ehci_logic_fck && !IS_ERR(omap->ehci_logic_fck))

		clk_disable(omap->ehci_logic_fck);



	spin_unlock_irqrestore(&omap->lock, flags);



	return 0;

}



static void omap_usbhs_init(struct device *dev)

{

	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);

	struct usbhs_omap_platform_data	*pdata = &omap->platdata;

	unsigned long			flags;

	unsigned			reg;



	dev_dbg(dev, "starting TI HSUSB Controller\n");



	pm_runtime_get_sync(dev);

	spin_lock_irqsave(&omap->lock, flags);



	if (pdata->ehci_data->phy_reset) {

		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {

			gpio_request(pdata->ehci_data->reset_gpio_port[0],

						"USB1 PHY reset");

			gpio_direction_output

				(pdata->ehci_data->reset_gpio_port[0], 0);

		}



		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) {

			gpio_request(pdata->ehci_data->reset_gpio_port[1],

						"USB2 PHY reset");

			gpio_direction_output

				(pdata->ehci_data->reset_gpio_port[1], 0);

		}



		/* Hold the PHY in RESET for enough time till DIR is high */

		udelay(10);

	}



	usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);

	omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);

	dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);



	reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);

	/* setup ULPI bypass and burst configurations */
@@ -825,49 +569,6 @@ static int usbhs_enable(struct device *dev) 
		reg &= ~OMAP4_P1_MODE_CLEAR;

		reg &= ~OMAP4_P2_MODE_CLEAR;



		if (is_ehci_phy_mode(pdata->port_mode[0])) {

			ret = clk_set_parent(omap->utmi_p1_fck,

						omap->xclk60mhsp1_ck);

			if (ret != 0) {

				dev_err(dev, "xclk60mhsp1_ck set parent"

				"failed error:%d\n", ret);

				goto err_tll;

			}

		} else if (is_ehci_tll_mode(pdata->port_mode[0])) {

			ret = clk_set_parent(omap->utmi_p1_fck,

						omap->init_60m_fclk);

			if (ret != 0) {

				dev_err(dev, "init_60m_fclk set parent"

				"failed error:%d\n", ret);

				goto err_tll;

			}

			clk_enable(omap->usbhost_p1_fck);

			clk_enable(omap->usbtll_p1_fck);

		}



		if (is_ehci_phy_mode(pdata->port_mode[1])) {

			ret = clk_set_parent(omap->utmi_p2_fck,

						omap->xclk60mhsp2_ck);

			if (ret != 0) {

				dev_err(dev, "xclk60mhsp1_ck set parent"

					"failed error:%d\n", ret);

				goto err_tll;

			}

		} else if (is_ehci_tll_mode(pdata->port_mode[1])) {

			ret = clk_set_parent(omap->utmi_p2_fck,

						omap->init_60m_fclk);

			if (ret != 0) {

				dev_err(dev, "init_60m_fclk set parent"

				"failed error:%d\n", ret);

				goto err_tll;

			}

			clk_enable(omap->usbhost_p2_fck);

			clk_enable(omap->usbtll_p2_fck);

		}



		clk_enable(omap->utmi_p1_fck);

		clk_enable(omap->utmi_p2_fck);



		if (is_ehci_tll_mode(pdata->port_mode[0]) ||

			(is_ohci_port(pdata->port_mode[0])))

			reg |= OMAP4_P1_MODE_TLL;
@@ -913,12 +614,15 @@ static int usbhs_enable(struct device *dev) 
				(pdata->ehci_data->reset_gpio_port[1], 1);

	}



end_count:

	omap->count++;

	spin_unlock_irqrestore(&omap->lock, flags);

	return 0;

	pm_runtime_put_sync(dev);

}



static void omap_usbhs_deinit(struct device *dev)

{

	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);

	struct usbhs_omap_platform_data	*pdata = &omap->platdata;



err_tll:

	if (pdata->ehci_data->phy_reset) {

		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))

			gpio_free(pdata->ehci_data->reset_gpio_port[0]);
@@ -926,123 +630,272 @@ err_tll: 
		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))

			gpio_free(pdata->ehci_data->reset_gpio_port[1]);

	}



	clk_disable(omap->usbtll_ick);

	clk_disable(omap->usbtll_fck);

	clk_disable(omap->usbhost_fs_fck);

	clk_disable(omap->usbhost_hs_fck);

	clk_disable(omap->usbhost_ick);

	spin_unlock_irqrestore(&omap->lock, flags);

	return ret;

}



static void usbhs_disable(struct device *dev)



/**

 * usbhs_omap_probe - initialize TI-based HCDs

 *

 * Allocates basic resources for this USB host controller.

 */

static int __devinit usbhs_omap_probe(struct platform_device *pdev)

{

	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);

	struct usbhs_omap_platform_data	*pdata = &omap->platdata;

	unsigned long			flags = 0;

	unsigned long			timeout;

	struct device			*dev =  &pdev->dev;

	struct usbhs_omap_platform_data	*pdata = dev->platform_data;

	struct usbhs_hcd_omap		*omap;

	struct resource			*res;

	int				ret = 0;

	int				i;



	if (!pdata) {

		dev_err(dev, "Missing platform data\n");

		ret = -ENOMEM;

		goto end_probe;

	}



	dev_dbg(dev, "stopping TI HSUSB Controller\n");

	omap = kzalloc(sizeof(*omap), GFP_KERNEL);

	if (!omap) {

		dev_err(dev, "Memory allocation failed\n");

		ret = -ENOMEM;

		goto end_probe;

	}



	spin_lock_irqsave(&omap->lock, flags);

	spin_lock_init(&omap->lock);



	if (omap->count == 0)

		goto end_disble;

	for (i = 0; i < OMAP3_HS_USB_PORTS; i++)

		omap->platdata.port_mode[i] = pdata->port_mode[i];



	omap->count--;

	omap->platdata.ehci_data = pdata->ehci_data;

	omap->platdata.ohci_data = pdata->ohci_data;



	if (omap->count != 0)

		goto end_disble;

	pm_runtime_enable(dev);



	/* Reset OMAP modules for insmod/rmmod to work */

	usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,

			is_omap_usbhs_rev2(omap) ?

			OMAP4_UHH_SYSCONFIG_SOFTRESET :

			OMAP_UHH_SYSCONFIG_SOFTRESET);



	timeout = jiffies + msecs_to_jiffies(100);

	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)

				& (1 << 0))) {

		cpu_relax();

	for (i = 0; i < OMAP3_HS_USB_PORTS; i++)

		if (is_ehci_phy_mode(i) || is_ehci_tll_mode(i) ||

			is_ehci_hsic_mode(i)) {

			omap->ehci_logic_fck = clk_get(dev, "ehci_logic_fck");

			if (IS_ERR(omap->ehci_logic_fck)) {

				ret = PTR_ERR(omap->ehci_logic_fck);

				dev_warn(dev, "ehci_logic_fck failed:%d\n",

					 ret);

			}

			break;

		}



		if (time_after(jiffies, timeout))

			dev_dbg(dev, "operation timed out\n");

	omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");

	if (IS_ERR(omap->utmi_p1_fck)) {

		ret = PTR_ERR(omap->utmi_p1_fck);

		dev_err(dev, "utmi_p1_gfclk failed error:%d\n",	ret);

		goto err_end;

	}



	omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");

	if (IS_ERR(omap->xclk60mhsp1_ck)) {

		ret = PTR_ERR(omap->xclk60mhsp1_ck);

		dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);

		goto err_utmi_p1_fck;

	}



	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)

				& (1 << 1))) {

		cpu_relax();

	omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");

	if (IS_ERR(omap->utmi_p2_fck)) {

		ret = PTR_ERR(omap->utmi_p2_fck);

		dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);

		goto err_xclk60mhsp1_ck;

	}



	omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");

	if (IS_ERR(omap->xclk60mhsp2_ck)) {

		ret = PTR_ERR(omap->xclk60mhsp2_ck);

		dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);

		goto err_utmi_p2_fck;

	}



		if (time_after(jiffies, timeout))

			dev_dbg(dev, "operation timed out\n");

	omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");

	if (IS_ERR(omap->usbhost_p1_fck)) {

		ret = PTR_ERR(omap->usbhost_p1_fck);

		dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);

		goto err_xclk60mhsp2_ck;

	}



	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)

				& (1 << 2))) {

		cpu_relax();

	omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");

	if (IS_ERR(omap->usbtll_p1_fck)) {

		ret = PTR_ERR(omap->usbtll_p1_fck);

		dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);

		goto err_usbhost_p1_fck;

	}



		if (time_after(jiffies, timeout))

			dev_dbg(dev, "operation timed out\n");

	omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");

	if (IS_ERR(omap->usbhost_p2_fck)) {

		ret = PTR_ERR(omap->usbhost_p2_fck);

		dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);

		goto err_usbtll_p1_fck;

	}



	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1));

	omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");

	if (IS_ERR(omap->usbtll_p2_fck)) {

		ret = PTR_ERR(omap->usbtll_p2_fck);

		dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);

		goto err_usbhost_p2_fck;

	}



	while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)

				& (1 << 0))) {

		cpu_relax();

	omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");

	if (IS_ERR(omap->init_60m_fclk)) {

		ret = PTR_ERR(omap->init_60m_fclk);

		dev_err(dev, "init_60m_fclk failed error:%d\n", ret);

		goto err_usbtll_p2_fck;

	}



		if (time_after(jiffies, timeout))

			dev_dbg(dev, "operation timed out\n");

	if (is_ehci_phy_mode(pdata->port_mode[0])) {

		/* for OMAP3 , the clk set paretn fails */

		ret = clk_set_parent(omap->utmi_p1_fck,

					omap->xclk60mhsp1_ck);

		if (ret != 0)

			dev_err(dev, "xclk60mhsp1_ck set parent"

				"failed error:%d\n", ret);

	} else if (is_ehci_tll_mode(pdata->port_mode[0])) {

		ret = clk_set_parent(omap->utmi_p1_fck,

					omap->init_60m_fclk);

		if (ret != 0)

			dev_err(dev, "init_60m_fclk set parent"

				"failed error:%d\n", ret);

	}



	if (is_omap_usbhs_rev2(omap)) {

		if (is_ehci_tll_mode(pdata->port_mode[0]))

			clk_disable(omap->usbtll_p1_fck);

		if (is_ehci_tll_mode(pdata->port_mode[1]))

			clk_disable(omap->usbtll_p2_fck);

		clk_disable(omap->utmi_p2_fck);

		clk_disable(omap->utmi_p1_fck);

	if (is_ehci_phy_mode(pdata->port_mode[1])) {

		ret = clk_set_parent(omap->utmi_p2_fck,

					omap->xclk60mhsp2_ck);

		if (ret != 0)

			dev_err(dev, "xclk60mhsp2_ck set parent"

					"failed error:%d\n", ret);

	} else if (is_ehci_tll_mode(pdata->port_mode[1])) {

		ret = clk_set_parent(omap->utmi_p2_fck,

						omap->init_60m_fclk);

		if (ret != 0)

			dev_err(dev, "init_60m_fclk set parent"

				"failed error:%d\n", ret);

	}



	clk_disable(omap->usbtll_ick);

	clk_disable(omap->usbtll_fck);

	clk_disable(omap->usbhost_fs_fck);

	clk_disable(omap->usbhost_hs_fck);

	clk_disable(omap->usbhost_ick);

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");

	if (!res) {

		dev_err(dev, "UHH EHCI get resource failed\n");

		ret = -ENODEV;

		goto err_init_60m_fclk;

	}



	/* The gpio_free migh sleep; so unlock the spinlock */

	spin_unlock_irqrestore(&omap->lock, flags);

	omap->uhh_base = ioremap(res->start, resource_size(res));

	if (!omap->uhh_base) {

		dev_err(dev, "UHH ioremap failed\n");

		ret = -ENOMEM;

		goto err_init_60m_fclk;

	}



	if (pdata->ehci_data->phy_reset) {

		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))

			gpio_free(pdata->ehci_data->reset_gpio_port[0]);

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");

	if (!res) {

		dev_err(dev, "UHH EHCI get resource failed\n");

		ret = -ENODEV;

		goto err_tll;

	}



		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))

			gpio_free(pdata->ehci_data->reset_gpio_port[1]);

	omap->tll_base = ioremap(res->start, resource_size(res));

	if (!omap->tll_base) {

		dev_err(dev, "TLL ioremap failed\n");

		ret = -ENOMEM;

		goto err_tll;

	}

	return;



end_disble:

	spin_unlock_irqrestore(&omap->lock, flags);

	platform_set_drvdata(pdev, omap);



	ret = omap_usbhs_alloc_children(pdev);

	if (ret) {

		dev_err(dev, "omap_usbhs_alloc_children failed\n");

		goto err_alloc;

	}



int omap_usbhs_enable(struct device *dev)

{

	return  usbhs_enable(dev->parent);

	omap_usbhs_init(dev);



	goto end_probe;



err_alloc:

	iounmap(omap->tll_base);



err_tll:

	iounmap(omap->uhh_base);



err_init_60m_fclk:

	clk_put(omap->init_60m_fclk);



err_usbtll_p2_fck:

	clk_put(omap->usbtll_p2_fck);



err_usbhost_p2_fck:

	clk_put(omap->usbhost_p2_fck);



err_usbtll_p1_fck:

	clk_put(omap->usbtll_p1_fck);



err_usbhost_p1_fck:

	clk_put(omap->usbhost_p1_fck);



err_xclk60mhsp2_ck:

	clk_put(omap->xclk60mhsp2_ck);



err_utmi_p2_fck:

	clk_put(omap->utmi_p2_fck);



err_xclk60mhsp1_ck:

	clk_put(omap->xclk60mhsp1_ck);



err_utmi_p1_fck:

	clk_put(omap->utmi_p1_fck);



err_end:

	clk_put(omap->ehci_logic_fck);

	pm_runtime_disable(dev);

	kfree(omap);



end_probe:

	return ret;

}

EXPORT_SYMBOL_GPL(omap_usbhs_enable);



void omap_usbhs_disable(struct device *dev)

/**

 * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs

 * @pdev: USB Host Controller being removed

 *

 * Reverses the effect of usbhs_omap_probe().

 */

static int __devexit usbhs_omap_remove(struct platform_device *pdev)

{

	usbhs_disable(dev->parent);

	struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);



	omap_usbhs_deinit(&pdev->dev);

	iounmap(omap->tll_base);

	iounmap(omap->uhh_base);

	clk_put(omap->init_60m_fclk);

	clk_put(omap->usbtll_p2_fck);

	clk_put(omap->usbhost_p2_fck);

	clk_put(omap->usbtll_p1_fck);

	clk_put(omap->usbhost_p1_fck);

	clk_put(omap->xclk60mhsp2_ck);

	clk_put(omap->utmi_p2_fck);

	clk_put(omap->xclk60mhsp1_ck);

	clk_put(omap->utmi_p1_fck);

	clk_put(omap->ehci_logic_fck);

	pm_runtime_disable(&pdev->dev);

	kfree(omap);



	return 0;

}

EXPORT_SYMBOL_GPL(omap_usbhs_disable);



static const struct dev_pm_ops usbhsomap_dev_pm_ops = {

	.runtime_suspend	= usbhs_runtime_suspend,

	.runtime_resume		= usbhs_runtime_resume,

};



static struct platform_driver usbhs_omap_driver = {

	.driver = {

		.name		= (char *)usbhs_driver_name,

		.owner		= THIS_MODULE,

		.pm		= &usbhsomap_dev_pm_ops,

	},

	.remove		= __exit_p(usbhs_omap_remove),

};

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