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Commit 8898c67a authored by Abhijeet Dharmapurikar's avatar Abhijeet Dharmapurikar
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power: smb135x-charger: change the OTG enable sequence 



If the OTG was enabled before, the driver is required to
disable and enable OTG to actually re-enable it.

This will address the issue where 5V was not seen after enabling
OTG when an over current interrupt happens.

CRs-Fixed: 794748
Change-Id: I54764ddda2c33aff985196b7be9e317d9b7b45b4
Signed-off-by: default avatarAbhijeet Dharmapurikar <adharmap@codeaurora.org>
parent 7fc15a36

drivers/power/smb135x-charger.c

+16 −0
Original line number Diff line number Diff line
@@ -2024,6 +2024,7 @@ static int smb135x_chg_otg_enable(struct smb135x_chg *chip) 
	int rc = 0;

	int restart_count = 0;

	struct timeval time_a, time_b, time_c, time_d;

	u8 reg;



	if (chip->revision == REV_2) {

		/*
@@ -2101,6 +2102,21 @@ restart_from_disable: 
			goto restart_from_disable;

		}

	} else {

		rc = smb135x_read(chip, CMD_CHG_REG, &reg);

		if (rc < 0) {

			dev_err(chip->dev, "Couldn't read cmd reg rc=%d\n",

					rc);

			return rc;

		}

		if (reg & OTG_EN) {

			/* if it is set, disable it before re-enabling it */

			rc = smb135x_masked_write(chip, CMD_CHG_REG, OTG_EN, 0);

			if (rc < 0) {

				dev_err(chip->dev, "Couldn't disable OTG mode rc=%d\n",

						rc);

				return rc;

			}

		}

		rc = smb135x_masked_write(chip, CMD_CHG_REG, OTG_EN, OTG_EN);

		if (rc < 0) {

			dev_err(chip->dev, "Couldn't enable OTG mode rc=%d\n",