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Commit b1ab97d7 authored by Kavya Nunna's avatar Kavya Nunna Committed by Gerrit - the friendly Code Review server
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power: smb5-lib: Add support for microusb 



Add support for typec class registration for
micro usb platform for switching USB composition from UI.

Change-Id: I13e87b4ab099dd5efa56b121da6be227c81f961d
Signed-off-by: default avatarKavya Nunna <knunna@codeaurora.org>
Signed-off-by: default avatarAnirudh Ghayal <aghayal@codeaurora.org>
parent 1d86c274

drivers/power/supply/qcom/smb5-lib.c

+103 −91
Original line number Diff line number Diff line
@@ -5400,12 +5400,115 @@ irqreturn_t icl_change_irq_handler(int irq, void *data) 
	return IRQ_HANDLED;

}



static int smblib_role_switch_failure(struct smb_charger *chg)

{

	int rc = 0;

	union power_supply_propval pval = {0, };



	if (!chg->use_extcon)

		return 0;



	rc = smblib_get_prop_usb_present(chg, &pval);

	if (rc < 0) {

		smblib_err(chg, "Couldn't get usb presence status rc=%d\n",

				rc);

		return rc;

	}



	/*

	 * When role switch fails notify the

	 * current charger state to usb driver.

	 */

	if (pval.intval) {

		smblib_dbg(chg, PR_MISC, " Role reversal failed, notifying device mode to usb driver.\n");

		smblib_notify_device_mode(chg, true);

	}



	return rc;

}



static int typec_partner_register(struct smb_charger *chg)

{

	int typec_mode, rc = 0;



	mutex_lock(&chg->typec_lock);



	if (!chg->typec_port || chg->pr_swap_in_progress)

		goto unlock;



	if (!chg->typec_partner) {

		if (chg->sink_src_mode == AUDIO_ACCESS_MODE)

			chg->typec_partner_desc.accessory =

					TYPEC_ACCESSORY_AUDIO;

		else

			chg->typec_partner_desc.accessory =

					TYPEC_ACCESSORY_NONE;



		chg->typec_partner = typec_register_partner(chg->typec_port,

				&chg->typec_partner_desc);

		if (IS_ERR(chg->typec_partner)) {

			rc = PTR_ERR(chg->typec_partner);

			pr_err("failed to register typec_partner rc=%d\n", rc);

			goto unlock;

		}

	}



	typec_mode = smblib_get_prop_typec_mode(chg);



	if (typec_mode >= QTI_POWER_SUPPLY_TYPEC_SOURCE_DEFAULT

			|| typec_mode == QTI_POWER_SUPPLY_TYPEC_NONE) {



		if (chg->typec_role_swap_failed) {

			rc = smblib_role_switch_failure(chg);

			if (rc < 0)

				smblib_err(chg, "Failed to role switch rc=%d\n",

					rc);

			chg->typec_role_swap_failed = false;

		}



		typec_set_data_role(chg->typec_port, TYPEC_DEVICE);

		typec_set_pwr_role(chg->typec_port, TYPEC_SINK);

	} else {

		typec_set_data_role(chg->typec_port, TYPEC_HOST);

		typec_set_pwr_role(chg->typec_port, TYPEC_SOURCE);

	}



unlock:

	mutex_unlock(&chg->typec_lock);

	return rc;

}



static void typec_partner_unregister(struct smb_charger *chg)

{

	mutex_lock(&chg->typec_lock);



	if (!chg->typec_port)

		goto unlock;



	if (chg->typec_partner && !chg->pr_swap_in_progress) {

		smblib_dbg(chg, PR_MISC, "Un-registering typeC partner\n");

		typec_unregister_partner(chg->typec_partner);

		chg->typec_partner = NULL;

	}



unlock:

	mutex_unlock(&chg->typec_lock);

}



static void smblib_micro_usb_plugin(struct smb_charger *chg, bool vbus_rising)

{

	int rc = 0;



	if (!vbus_rising) {

		smblib_update_usb_type(chg);

		smblib_notify_device_mode(chg, false);

		smblib_uusb_removal(chg);

		typec_partner_unregister(chg);

	} else {

		rc = typec_partner_register(chg);

		if (rc < 0)

			smblib_err(chg, "Couldn't register partner rc =%d\n",

					rc);

	}

}
@@ -5988,97 +6091,6 @@ static void typec_ra_ra_insertion(struct smb_charger *chg) 
	smblib_hvdcp_detect_enable(chg, true);

}



static int smblib_role_switch_failure(struct smb_charger *chg)

{

	int rc = 0;

	union power_supply_propval pval = {0, };



	if (!chg->use_extcon)

		return 0;



	rc = smblib_get_prop_usb_present(chg, &pval);

	if (rc < 0) {

		smblib_err(chg, "Couldn't get usb presence status rc=%d\n",

				rc);

		return rc;

	}



	/*

	 * When role switch fails notify the

	 * current charger state to usb driver.

	 */

	if (pval.intval) {

		smblib_dbg(chg, PR_MISC, " Role reversal failed, notifying device mode to usb driver.\n");

		smblib_notify_device_mode(chg, true);

	}



	return rc;

}



static int typec_partner_register(struct smb_charger *chg)

{

	int typec_mode, rc = 0;



	mutex_lock(&chg->typec_lock);



	if (!chg->typec_port || chg->pr_swap_in_progress)

		goto unlock;



	if (!chg->typec_partner) {

		if (chg->sink_src_mode == AUDIO_ACCESS_MODE)

			chg->typec_partner_desc.accessory =

					TYPEC_ACCESSORY_AUDIO;

		else

			chg->typec_partner_desc.accessory =

					TYPEC_ACCESSORY_NONE;



		chg->typec_partner = typec_register_partner(chg->typec_port,

				&chg->typec_partner_desc);

		if (IS_ERR(chg->typec_partner)) {

			rc = PTR_ERR(chg->typec_partner);

			pr_err("failed to register typec_partner rc=%d\n", rc);

			goto unlock;

		}

	}



	typec_mode = smblib_get_prop_typec_mode(chg);



	if (typec_mode >= QTI_POWER_SUPPLY_TYPEC_SOURCE_DEFAULT

			|| typec_mode == QTI_POWER_SUPPLY_TYPEC_NONE) {



		if (chg->typec_role_swap_failed) {

			rc = smblib_role_switch_failure(chg);

			if (rc < 0)

				smblib_err(chg, "Failed to role switch rc=%d\n",

					rc);

			chg->typec_role_swap_failed = false;

		}



		typec_set_data_role(chg->typec_port, TYPEC_DEVICE);

		typec_set_pwr_role(chg->typec_port, TYPEC_SINK);

	} else {

		typec_set_data_role(chg->typec_port, TYPEC_HOST);

		typec_set_pwr_role(chg->typec_port, TYPEC_SOURCE);

	}



unlock:

	mutex_unlock(&chg->typec_lock);

	return rc;

}



static void typec_partner_unregister(struct smb_charger *chg)

{

	mutex_lock(&chg->typec_lock);



	if (chg->typec_partner && !chg->pr_swap_in_progress) {

		smblib_dbg(chg, PR_MISC, "Un-registering typeC partner\n");

		typec_unregister_partner(chg->typec_partner);

		chg->typec_partner = NULL;

	}



	mutex_unlock(&chg->typec_lock);

}



static const char * const dr_mode_text[] = {

	"ufp", "dfp", "none"

};