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Commit 2ce0fe22 authored by Hemant Kumar's avatar Hemant Kumar
Browse files

usb: xhci-msm-hsic: Configure strobe and data gpio pads for HSIC usage 



Strobe and data gpios need to get configured as HSIC strobe and data
lines. Hence enable these gpio pads for normal HSIC operation upon
driver bind and disable them back upon driver unbind.

Change-Id: I66cc69a30a6863e779b9c2eb4707cfefb802252b
Signed-off-by: default avatarHemant Kumar <hemantk@codeaurora.org>
parent c13a89c9

drivers/usb/host/xhci-msm-hsic.c

+24 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 


#include <mach/rpm-regulator.h>

#include <mach/clk.h>

#include <mach/msm_iomap.h>



#include "xhci.h"
@@ -37,6 +38,8 @@ 
#define MSM_HSIC_PWR_EVENT_IRQ_STAT	(MSM_HSIC_BASE + 0xf8858)

#define MSM_HSIC_PWR_EVNT_IRQ_MASK	(MSM_HSIC_BASE + 0xf885c)



#define TLMM_GPIO_HSIC_STROBE_PAD_CTL	(MSM_TLMM_BASE + 0x2050)

#define TLMM_GPIO_HSIC_DATA_PAD_CTL	(MSM_TLMM_BASE + 0x2054)



#define GCTL_CORESOFTRESET	BIT(11)
@@ -756,6 +759,16 @@ static int mxhci_hsic_probe(struct platform_device *pdev) 
		goto deinit_vddcx;

	}



	/* enable STROBE_PAD_CTL */

	reg = readl_relaxed(TLMM_GPIO_HSIC_STROBE_PAD_CTL);

	writel_relaxed(reg | 0x2000000, TLMM_GPIO_HSIC_STROBE_PAD_CTL);



	/* enable DATA_PAD_CTL */

	reg = readl_relaxed(TLMM_GPIO_HSIC_DATA_PAD_CTL);

	writel_relaxed(reg | 0x2000000, TLMM_GPIO_HSIC_DATA_PAD_CTL);



	mb();



	/* Enable LPM in Sleep mode and suspend mode */

	reg = readl_relaxed(MSM_HSIC_CTRL_REG);

	reg |= CTRLREG_PLL_CTRL_SLEEP | CTRLREG_PLL_CTRL_SUSP;
@@ -864,6 +877,17 @@ static int mxhci_hsic_remove(struct platform_device *pdev) 
	struct usb_hcd	*hcd = platform_get_drvdata(pdev);

	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);

	struct mxhci_hsic_hcd *mxhci = hcd_to_hsic(hcd);

	u32 reg;



	/* disable STROBE_PAD_CTL */

	reg = readl_relaxed(TLMM_GPIO_HSIC_STROBE_PAD_CTL);

	writel_relaxed(reg & 0xfdffffff, TLMM_GPIO_HSIC_STROBE_PAD_CTL);



	/* disable DATA_PAD_CTL */

	reg = readl_relaxed(TLMM_GPIO_HSIC_DATA_PAD_CTL);

	writel_relaxed(reg & 0xfdffffff, TLMM_GPIO_HSIC_DATA_PAD_CTL);



	mb();



	/* If the device was removed no need to call pm_runtime_disable */

	if (pdev->dev.power.power_state.event != PM_EVENT_INVALID)