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Commit fc4ee1f6 authored by Umang Agrawal's avatar Umang Agrawal
Browse files

power: smb1390: Add cp_awake votable to hold wake lock 



Add cp_awake votable to hold wake lock till charge pump is enabled
to prevent i2c read/write failures.

Change-Id: I69a973d16a90ff566374fe40cb7517c7b3b1e453
Signed-off-by: default avatarUmang Agrawal <uagrawal@codeaurora.org>
parent b1e3702d

drivers/power/supply/qcom/smb1390-charger.c

+29 −0
Original line number Diff line number Diff line
@@ -100,6 +100,7 @@ struct smb1390 { 
	struct regmap		*regmap;

	struct notifier_block	nb;

	struct class		cp_class;

	struct wakeup_source	*cp_ws;



	/* work structs */

	struct work_struct	status_change_work;
@@ -114,6 +115,7 @@ struct smb1390 { 
	struct votable		*pl_disable_votable;

	struct votable		*fcc_votable;

	struct votable		*hvdcp_hw_inov_dis_votable;

	struct votable		*cp_awake_votable;



	/* power supplies */

	struct power_supply	*usb_psy;
@@ -379,9 +381,11 @@ static int smb1390_disable_vote_cb(struct votable *votable, void *data, 
			return rc;



		vote(chip->pl_disable_votable, CP_VOTER, false, 0);

		vote(chip->cp_awake_votable, CP_VOTER, false, 0);

	} else {

		vote(chip->hvdcp_hw_inov_dis_votable, CP_VOTER, true, 0);

		vote(chip->pl_disable_votable, CP_VOTER, true, 0);

		vote(chip->cp_awake_votable, CP_VOTER, true, 0);

		rc = smb1390_masked_write(chip, CORE_CONTROL1_REG,

				   CMD_EN_SWITCHER_BIT, CMD_EN_SWITCHER_BIT);

		if (rc < 0)
@@ -427,6 +431,20 @@ static int smb1390_ilim_vote_cb(struct votable *votable, void *data, 
	return rc;

}



static int smb1390_awake_vote_cb(struct votable *votable, void *data,

				int awake, const char *client)

{

	struct smb1390 *chip = data;



	if (awake)

		__pm_stay_awake(chip->cp_ws);

	else

		__pm_relax(chip->cp_ws);



	pr_debug("client: %s awake: %d\n", client, awake);

	return 0;

}



static int smb1390_notifier_cb(struct notifier_block *nb,

			       unsigned long event, void *data)

{
@@ -588,6 +606,11 @@ static int smb1390_create_votables(struct smb1390 *chip) 
	if (IS_ERR(chip->ilim_votable))

		return PTR_ERR(chip->ilim_votable);



	chip->cp_awake_votable = create_votable("CP_AWAKE", VOTE_SET_ANY,

			smb1390_awake_vote_cb, chip);

	if (IS_ERR(chip->cp_awake_votable))

		return PTR_ERR(chip->cp_awake_votable);



	return 0;

}
@@ -732,6 +755,10 @@ static int smb1390_probe(struct platform_device *pdev) 
		return rc;

	}



	chip->cp_ws = wakeup_source_register("qcom-chargepump");

	if (!chip->cp_ws)

		return rc;



	rc = smb1390_create_votables(chip);

	if (rc < 0) {

		pr_err("Couldn't create votables rc=%d\n", rc);
@@ -778,6 +805,7 @@ static int smb1390_probe(struct platform_device *pdev) 
out_work:

	cancel_work(&chip->taper_work);

	cancel_work(&chip->status_change_work);

	wakeup_source_unregister(chip->cp_ws);

	return rc;

}
@@ -793,6 +821,7 @@ static int smb1390_remove(struct platform_device *pdev) 
	vote(chip->hvdcp_hw_inov_dis_votable, CP_VOTER, false, 0);

	cancel_work(&chip->taper_work);

	cancel_work(&chip->status_change_work);

	wakeup_source_unregister(chip->cp_ws);

	smb1390_destroy_votables(chip);

	return 0;

}