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Commit d51acfcc authored by Vijayavardhan Vennapusa's avatar Vijayavardhan Vennapusa Committed by Gerrit - the friendly Code Review server
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USB: qusb: Add support to change TUNEX registers dynamically 



Add required support to change QUSB2PHY_PORT_TUNE1/2/3/4/5 registers
dynamically for testing USB electrical complaince.

Change-Id: Id84d460c8f8dc8cdedabe3887859d6b90acf7c3f
Signed-off-by: default avatarVijayavardhan Vennapusa <vvreddy@codeaurora.org>
Signed-off-by: default avatarChandana Kishori Chiluveru <cchiluve@codeaurora.org>
parent d5779648

drivers/usb/phy/phy-msm-qusb.c

+41 −7
Original line number Diff line number Diff line
@@ -70,6 +70,7 @@ 
#define QUSB2PHY_PORT_TUNE2             0x84

#define QUSB2PHY_PORT_TUNE3             0x88

#define QUSB2PHY_PORT_TUNE4             0x8C

#define QUSB2PHY_PORT_TUNE5             0x90



/* Get TUNE2's high nibble value read from efuse */

#define TUNE2_HIGH_NIBBLE_VAL(val, pos, mask)	((val >> pos) & mask)
@@ -96,10 +97,27 @@ 


#define QUSB2PHY_REFCLK_ENABLE		BIT(0)



unsigned int tune2;

module_param(tune2, uint, S_IRUGO | S_IWUSR);

static unsigned int tune1;

module_param(tune1, uint, 0644);

MODULE_PARM_DESC(tune1, "QUSB PHY TUNE1");



static unsigned int tune2;

module_param(tune2, uint, 0644);

MODULE_PARM_DESC(tune2, "QUSB PHY TUNE2");



static unsigned int tune3;

module_param(tune3, uint, 0644);

MODULE_PARM_DESC(tune3, "QUSB PHY TUNE3");



static unsigned int tune4;

module_param(tune4, uint, 0644);

MODULE_PARM_DESC(tune4, "QUSB PHY TUNE4");



static unsigned int tune5;

module_param(tune5, uint, 0644);

MODULE_PARM_DESC(tune5, "QUSB PHY TUNE5");





struct qusb_phy {

	struct usb_phy		phy;

	void __iomem		*base;
@@ -511,13 +529,29 @@ static int qusb_phy_init(struct usb_phy *phy) 
				qphy->base + QUSB2PHY_PORT_TUNE2);

	}



	/* If tune2 modparam set, override tune2 value */

	if (tune2) {

		pr_debug("%s(): (modparam) TUNE2 val:0x%02x\n",

						__func__, tune2);

	/* If tune modparam set, override tune value */



	pr_debug("%s():userspecified modparams TUNEX val:0x%x %x %x %x %x\n",

				__func__, tune1, tune2, tune3, tune4, tune5);

	if (tune1)

		writel_relaxed(tune1,

				qphy->base + QUSB2PHY_PORT_TUNE1);



	if (tune2)

		writel_relaxed(tune2,

				qphy->base + QUSB2PHY_PORT_TUNE2);

	}



	if (tune3)

		writel_relaxed(tune3,

				qphy->base + QUSB2PHY_PORT_TUNE3);



	if (tune4)

		writel_relaxed(tune4,

				qphy->base + QUSB2PHY_PORT_TUNE4);



	if (tune5)

		writel_relaxed(tune5,

				qphy->base + QUSB2PHY_PORT_TUNE5);



	/* ensure above writes are completed before re-enabling PHY */

	wmb();