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Commit 2835220d authored by Kavya Nunna's avatar Kavya Nunna
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power: qpnp-smbcharger: Add support for dpdm pulsing 



The charger for msm8996 doesn't support HVDCP detection
by default. It depends on usb driver for dpdm pulsing,
set the dpdm property so that usb driver can initiate pulsing.

Change-Id: Ib2561f0429338375982dafbf8e71fd2d7ad32ef0
Signed-off-by: default avatarKavya Nunna <knunna@codeaurora.org>
parent 22dc337a

drivers/power/supply/qcom/qpnp-smbcharger.c

+15 −9
Original line number Diff line number Diff line
@@ -249,6 +249,7 @@ struct smbchg_chip { 
	struct power_supply		*dc_psy;

	struct power_supply		*bms_psy;

	struct power_supply		*typec_psy;

	struct power_supply		*dpdm_psy;

	int				dc_psy_type;

	const char			*bms_psy_name;

	const char			*battery_psy_name;
@@ -4604,12 +4605,19 @@ static void smbchg_hvdcp_det_work(struct work_struct *work) 
	smbchg_relax(chip, PM_DETECT_HVDCP);

}



static int set_usb_psy_dp_dm(struct smbchg_chip *chip, int state)

static int set_dpdm_psy(struct smbchg_chip *chip, int state)

{

	int rc;

	u8 reg;

	union power_supply_propval pval = {0, };



	if (!chip->dpdm_psy)

		chip->dpdm_psy = power_supply_get_by_name("dpdm");



	if (!chip->dpdm_psy) {

		pr_err("dpdm_psy not found\n");

		return -EINVAL;

	}

	/*

	 * ensure that we are not in the middle of an insertion where usbin_uv

	 * is low and src_detect hasnt gone high. If so force dp=F dm=F
@@ -4625,9 +4633,9 @@ static int set_usb_psy_dp_dm(struct smbchg_chip *chip, int state) 
			return rc;

		}

	}

	pr_smb(PR_MISC, "setting usb psy dp dm = %d\n", state);

	pr_smb(PR_MISC, "setting dpdm psy = %d\n", state);

	pval.intval = state;

	return power_supply_set_property(chip->usb_psy,

	return power_supply_set_property(chip->dpdm_psy,

				POWER_SUPPLY_PROP_DP_DM, &pval);

}
@@ -5239,7 +5247,7 @@ static int smbchg_prepare_for_pulsing(struct smbchg_chip *chip) 
	smbchg_sec_masked_write(chip, chip->usb_chgpth_base + USB_AICL_CFG,

			AICL_EN_BIT, AICL_EN_BIT);



	set_usb_psy_dp_dm(chip, POWER_SUPPLY_DP_DM_DP0P6_DMF);

	set_dpdm_psy(chip, POWER_SUPPLY_DP_DM_DP0P6_DMF);

	/*

	 * DCP will switch to HVDCP in this time by removing the short

	 * between DP DM
@@ -5262,7 +5270,7 @@ static int smbchg_prepare_for_pulsing(struct smbchg_chip *chip) 
		goto out;

	}



	set_usb_psy_dp_dm(chip, POWER_SUPPLY_DP_DM_DP0P6_DM3P3);

	set_dpdm_psy(chip, POWER_SUPPLY_DP_DM_DP0P6_DM3P3);

	/* Wait 60mS after entering continuous mode */

	msleep(60);
@@ -5664,8 +5672,7 @@ static int smbchg_dp_dm(struct smbchg_chip *chip, int val) 
		break;

	case POWER_SUPPLY_DP_DM_DP_PULSE:

		if (chip->schg_version == QPNP_SCHG)

			rc = set_usb_psy_dp_dm(chip,

					POWER_SUPPLY_DP_DM_DP_PULSE);

			rc = set_dpdm_psy(chip, POWER_SUPPLY_DP_DM_DP_PULSE);

		else

			rc = smbchg_dp_pulse_lite(chip);

		if (!rc)
@@ -5674,8 +5681,7 @@ static int smbchg_dp_dm(struct smbchg_chip *chip, int val) 
		break;

	case POWER_SUPPLY_DP_DM_DM_PULSE:

		if (chip->schg_version == QPNP_SCHG)

			rc = set_usb_psy_dp_dm(chip,

					POWER_SUPPLY_DP_DM_DM_PULSE);

			rc = set_dpdm_psy(chip, POWER_SUPPLY_DP_DM_DM_PULSE);

		else

			rc = smbchg_dm_pulse_lite(chip);

		if (!rc && chip->pulse_cnt)