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Commit c283f211 authored by Alex Sarraf's avatar Alex Sarraf
Browse files

leds: qpnp-wled: disable OVP fault interrupt before module enable 



Disable OVP fault interrupt before module enable then reenable
no later than 10us.

Change-Id: I4fedc457f1653185f6815d6b84d4b9cc0879f2ca
Signed-off-by: default avatarAlex Sarraf <asarraf@codeaurora.org>
parent 73670fdd

drivers/leds/leds-qpnp-wled.c

+23 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 
#define QPNP_WLED_SINK_BASE		"qpnp-wled-sink-base"



/* ctrl registers */

#define QPNP_WLED_INT_EN_SET(b)		(b + 0x15)

#define QPNP_WLED_EN_REG(b)		(b + 0x46)

#define QPNP_WLED_FDBK_OP_REG(b)	(b + 0x48)

#define QPNP_WLED_VREF_REG(b)		(b + 0x49)
@@ -71,6 +72,9 @@ 
#define QPNP_WLED_OVP_29500_MV		29500

#define QPNP_WLED_OVP_31000_MV		31000

#define QPNP_WLED_TEST4_EN_VREF_UP	0x32

#define QPNP_WLED_INT_EN_SET_OVP_DIS	0x00

#define QPNP_WLED_INT_EN_SET_OVP_EN	0x02

#define QPNP_WLED_OVP_FLT_SLEEP_US	10



/* sink registers */

#define QPNP_WLED_CURR_SINK_REG(b)	(b + 0x46)
@@ -352,6 +356,15 @@ static int qpnp_wled_module_en(struct qpnp_wled *wled, 
	int rc;

	u8 reg;



	/* disable OVP fault interrupt */

	if (state) {

		reg = QPNP_WLED_INT_EN_SET_OVP_DIS;

		rc = qpnp_wled_write_reg(wled, &reg,

				QPNP_WLED_INT_EN_SET(base_addr));

		if (rc)

			return rc;

	}



	rc = qpnp_wled_read_reg(wled, &reg,

			QPNP_WLED_MODULE_EN_REG(base_addr));

	if (rc < 0)
@@ -363,6 +376,16 @@ static int qpnp_wled_module_en(struct qpnp_wled *wled, 
	if (rc)

		return rc;



	/* enable OVP fault interrupt */

	if (state) {

		udelay(QPNP_WLED_OVP_FLT_SLEEP_US);

		reg = QPNP_WLED_INT_EN_SET_OVP_EN;

		rc = qpnp_wled_write_reg(wled, &reg,

				QPNP_WLED_INT_EN_SET(base_addr));

		if (rc)

			return rc;

	}



	return 0;

}