Commit d7eaf866 authored by Roger Quadros's avatar Roger Quadros
Browse files

mfd: omap-usb-host: know about number of ports from revision register 



The revision register should tell us how many ports are present.

Signed-off-by: default avatarRoger Quadros <rogerq@ti.com>
Reviewed-by: default avatarFelipe Balbi <balbi@ti.com>
parent 27d4f2c6

drivers/mfd/omap-usb-host.c

+28 −5
Original line number Diff line number Diff line
@@ -91,6 +91,8 @@ 




struct usbhs_hcd_omap {

	int				nports;



	struct clk			*xclk60mhsp1_ck;

	struct clk			*xclk60mhsp2_ck;

	struct clk			*utmi_p1_fck;
@@ -347,8 +349,6 @@ static void omap_usbhs_init(struct device *dev) 


	pm_runtime_get_sync(dev);

	spin_lock_irqsave(&omap->lock, flags);

	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 */
@@ -483,7 +483,32 @@ static int usbhs_omap_probe(struct platform_device *pdev) 


	pm_runtime_enable(dev);



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

	platform_set_drvdata(pdev, omap);

	pm_runtime_get_sync(dev);



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



	/* we need to call runtime suspend before we update omap->nports

	 * to prevent unbalanced clk_disable()

	 */

	pm_runtime_put_sync(dev);



	switch (omap->usbhs_rev) {

	case OMAP_USBHS_REV1:

		omap->nports = 3;

		break;

	case OMAP_USBHS_REV2:

		omap->nports = 2;

		break;

	default:

		omap->nports = OMAP3_HS_USB_PORTS;

		dev_dbg(dev,

		  "USB HOST Rev : 0x%d not recognized, assuming %d ports\n",

		   omap->usbhs_rev, omap->nports);

		break;

	}



	for (i = 0; i < omap->nports; 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");
@@ -573,8 +598,6 @@ static int usbhs_omap_probe(struct platform_device *pdev) 
				"failed error:%d\n", ret);

	}



	platform_set_drvdata(pdev, omap);



	omap_usbhs_init(dev);

	ret = omap_usbhs_alloc_children(pdev);

	if (ret) {