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Commit 0d177827 authored by Umang Agrawal's avatar Umang Agrawal
Browse files

smb-lib: add support of DP/DM pulsing for fix 5V, 9V and 12V 



This change will enable userspace to control adapter's output
voltage. Userspace can force adapter's output voltage to
5V/9V/12V.

Change-Id: I4a60a681c136df6864294dbd19849503a2be2e7b
Signed-off-by: default avatarUmang Agrawal <uagrawal@codeaurora.org>
parent 463cf733

drivers/power/supply/qcom/smb-lib.c

+27 −0
Original line number Diff line number Diff line
@@ -2012,6 +2012,18 @@ static int smblib_dm_pulse(struct smb_charger *chg) 
	return rc;

}



static int smblib_force_vbus_voltage(struct smb_charger *chg, u8 val)

{

	int rc;



	rc = smblib_masked_write(chg, CMD_HVDCP_2_REG, val, val);

	if (rc < 0)

		smblib_err(chg, "Couldn't write to CMD_HVDCP_2_REG rc=%d\n",

				rc);



	return rc;

}



int smblib_dp_dm(struct smb_charger *chg, int val)

{

	int target_icl_ua, rc = 0;
@@ -2063,6 +2075,21 @@ int smblib_dp_dm(struct smb_charger *chg, int val) 
		smblib_dbg(chg, PR_PARALLEL, "ICL DOWN ICL=%d reduction=%d\n",

				target_icl_ua, chg->usb_icl_delta_ua);

		break;

	case POWER_SUPPLY_DP_DM_FORCE_5V:

		rc = smblib_force_vbus_voltage(chg, FORCE_5V_BIT);

		if (rc < 0)

			pr_err("Failed to force 5V\n");

		break;

	case POWER_SUPPLY_DP_DM_FORCE_9V:

		rc = smblib_force_vbus_voltage(chg, FORCE_9V_BIT);

		if (rc < 0)

			pr_err("Failed to force 9V\n");

		break;

	case POWER_SUPPLY_DP_DM_FORCE_12V:

		rc = smblib_force_vbus_voltage(chg, FORCE_12V_BIT);

		if (rc < 0)

			pr_err("Failed to force 12V\n");

		break;

	case POWER_SUPPLY_DP_DM_ICL_UP:

	default:

		break;

include/linux/power_supply.h

+3 −0
Original line number Diff line number Diff line
@@ -103,6 +103,9 @@ enum { 
	POWER_SUPPLY_DP_DM_HVDCP3_SUPPORTED = 10,

	POWER_SUPPLY_DP_DM_ICL_DOWN = 11,

	POWER_SUPPLY_DP_DM_ICL_UP = 12,

	POWER_SUPPLY_DP_DM_FORCE_5V = 13,

	POWER_SUPPLY_DP_DM_FORCE_9V = 14,

	POWER_SUPPLY_DP_DM_FORCE_12V = 15,

};



enum {