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Commit e4ea89f5 authored by Anirudh Ghayal's avatar Anirudh Ghayal Committed by Abhijeet Dharmapurikar
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power: smb135x-charger: Check if SMB1357 is present before configuring it 



While configuring SMB1357 charger for parallel operation do a dummy read of
the SMB1357 version register to check if it is present.

Change-Id: Id99779bbe6984d9be485c016f8993eff396ae793
Signed-off-by: default avatarAnirudh Ghayal <aghayal@codeaurora.org>
parent 8d975a2b

drivers/power/smb135x-charger.c

+7 −0
Original line number Diff line number Diff line
@@ -1723,6 +1723,13 @@ static int smb135x_parallel_set_chg_present(struct smb135x_chg *chip, 
	u8 val;

	int rc;



	/* Check if SMB135x is present */

	rc = smb135x_read(chip, VERSION1_REG, &val);

	if (rc) {

		pr_debug("Failed to detect smb135x-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);