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Commit 91d63f48 authored by Ashay Jaiswal's avatar Ashay Jaiswal
Browse files

power: smb5: add legacy-cable detection logic 



Charger h/w legacy-cable detection fails if the
device is rebooted with charger connected. Fix
this by resetting TypeC state machine by disabling/enabling
TypeC module.

Change-Id: I26e78123f7a60adbeceeaa7acd5dc9b83306b19f
Signed-off-by: default avatarAshay Jaiswal <ashayj@codeaurora.org>
parent 37023fd5

drivers/power/supply/qcom/qpnp-smb5.c

+30 −2
Original line number Original line Diff line number Diff line
@@ -1431,11 +1431,39 @@ static int smb5_init_vconn_regulator(struct smb5 *chip) 
static int smb5_configure_typec(struct smb_charger *chg)

static int smb5_configure_typec(struct smb_charger *chg)

{

{

	int rc;

	int rc;

	u8 val = 0;



	rc = smblib_read(chg, LEGACY_CABLE_STATUS_REG, &val);

	if (rc < 0) {

		dev_err(chg->dev, "Couldn't read Legacy status rc=%d\n", rc);

		return rc;

	}

	/*

	 * If Legacy cable is detected re-trigger Legacy detection

	 * by disabling/enabling typeC mode.

	 */

	if (val & TYPEC_LEGACY_CABLE_STATUS_BIT) {

		rc = smblib_masked_write(chg, TYPE_C_MODE_CFG_REG,

				TYPEC_DISABLE_CMD_BIT, TYPEC_DISABLE_CMD_BIT);

		if (rc < 0) {

			dev_err(chg->dev, "Couldn't disable TYPEC rc=%d\n", rc);

			return rc;

		}



		/* delay before enabling typeC */

		msleep(500);



		rc = smblib_masked_write(chg, TYPE_C_MODE_CFG_REG,

				TYPEC_DISABLE_CMD_BIT, 0);

		if (rc < 0) {

			dev_err(chg->dev, "Couldn't enable TYPEC rc=%d\n", rc);

			return rc;

		}

	}





	/* disable apsd */

	/* disable apsd */

	rc = smblib_masked_write(chg, USBIN_OPTIONS_1_CFG_REG,

	rc = smblib_masked_write(chg, USBIN_OPTIONS_1_CFG_REG,

				HVDCP_EN_BIT | BC1P2_SRC_DETECT_BIT,

				HVDCP_EN_BIT | BC1P2_SRC_DETECT_BIT, 0);

				0);

	if (rc < 0) {

	if (rc < 0) {

		dev_err(chg->dev, "Couldn't disable APSD rc=%d\n", rc);

		dev_err(chg->dev, "Couldn't disable APSD rc=%d\n", rc);

		return rc;

		return rc;