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Commit 8d975a2b authored by Anirudh Ghayal's avatar Anirudh Ghayal Committed by Abhijeet Dharmapurikar
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power: smb1351-charger: Check if SMB1351 is present before configuring it 



While configuring SMB1351 for parallel operation do a dummy read of
the SMB1351 version register to check if it is present.

Change-Id: Ib5f5646a40f8f595238ffb8f79a2b27b468cfc8d
Signed-off-by: default avatarAnirudh Ghayal <aghayal@codeaurora.org>
parent 7540c129

drivers/power/smb1351-charger.c

+7 −0
Original line number Diff line number Diff line
@@ -1351,6 +1351,13 @@ static int smb1351_parallel_set_chg_present(struct smb1351_charger *chip, 
	int rc;

	u8 reg;



	/* Check if SMB1351 is present */

	rc = smb1351_read_reg(chip, CHG_REVISION_REG, &reg);

	if (rc) {

		pr_debug("Failed to detect smb1351-parallel-charger, may be absent\n");

		return -ENODEV;

	}



	if (present == chip->parallel_charger_present) {

		pr_debug("present %d -> %d, skipping\n",

				chip->parallel_charger_present, present);