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Commit 1fdb5291 authored by Ashay Jaiswal's avatar Ashay Jaiswal
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power: smb1390-psy: add support to configure minimum ILIM 



Add support to configure minimum ILIM supported via device tree,
charging is disabled if request ILIM falls below ILIM configuration.

Change-Id: I6ec5b2827ec585ce884f91b78d6377fc3323294a
Signed-off-by: default avatarAshay Jaiswal <ashayj@codeaurora.org>
parent 7e801ca9

Documentation/devicetree/bindings/power/supply/qcom/smb1390-charger-psy.txt

+6 −0
Original line number Original line Diff line number Diff line
@@ -32,6 +32,12 @@ Charger specific properties: 
  Definition: For details about IIO bindings see:

  Definition: For details about IIO bindings see:

	      Documentation/devicetree/bindings/iio/iio-bindings.txt

	      Documentation/devicetree/bindings/iio/iio-bindings.txt





- qcom,min-ilim-ua

  Usage:      optional

  Value type: <u32>

  Definition: Minimum ILIM supported, if requested ILIM goes below this value

	      disable SMB1390. If this values is not specified default minimum

	      ILIM is 1A.

================================================

================================================

Second Level Nodes - SMB1390 Charger Peripherals

Second Level Nodes - SMB1390 Charger Peripherals

================================================

================================================

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

+11 −4
Original line number Original line Diff line number Diff line
@@ -170,6 +170,7 @@ struct smb1390 { 
	int			die_temp;

	int			die_temp;

	bool			suspended;

	bool			suspended;

	u32			debug_mask;

	u32			debug_mask;

	u32			min_ilim_ua;

};

};





struct smb_irq {

struct smb_irq {
@@ -502,8 +503,8 @@ static int smb1390_ilim_vote_cb(struct votable *votable, void *data, 
		return rc;

		return rc;

	}

	}





	/* ILIM less than 1A is not accurate; disable charging */

	/* ILIM less than min_ilim_ua, disable charging */

	if (ilim_uA < 1000000) {

	if (ilim_uA < chip->min_ilim_ua) {

		smb1390_dbg(chip, PR_INFO, "ILIM %duA is too low to allow charging\n",

		smb1390_dbg(chip, PR_INFO, "ILIM %duA is too low to allow charging\n",

			ilim_uA);

			ilim_uA);

		vote(chip->disable_votable, ILIM_VOTER, true, 0);

		vote(chip->disable_votable, ILIM_VOTER, true, 0);
@@ -669,7 +670,7 @@ static void smb1390_taper_work(struct work_struct *work) 
				fcc_uA);

				fcc_uA);

			vote(chip->fcc_votable, CP_VOTER, true, fcc_uA);

			vote(chip->fcc_votable, CP_VOTER, true, fcc_uA);





			if (fcc_uA < 2000000) {

			if (fcc_uA < (chip->min_ilim_ua * 2)) {

				vote(chip->disable_votable, TAPER_END_VOTER,

				vote(chip->disable_votable, TAPER_END_VOTER,

								true, 0);

								true, 0);

				goto out;

				goto out;
@@ -868,9 +869,15 @@ static int smb1390_parse_dt(struct smb1390 *chip) 
			chip->iio.die_temp_chan = NULL;

			chip->iio.die_temp_chan = NULL;

			return rc;

			return rc;

		}

		}

	} else {

		return rc;

	}

	}





	return rc;

	chip->min_ilim_ua = 1000000; /* 1A */

	of_property_read_u32(chip->dev->of_node, "qcom,min-ilim-ua",

			&chip->min_ilim_ua);



	return 0;

}

}





static void smb1390_release_channels(struct smb1390 *chip)

static void smb1390_release_channels(struct smb1390 *chip)