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Commit 079af6dc authored by Ashay Jaiswal's avatar Ashay Jaiswal
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power: qpnp-smbcharger: add support for high current SDP/floating charger 



Add support to configure high ICL for SDP chargers, this is useful in case
of SDP or floating chargers which supports high current.
If 'qcom,override-usb-current' property is present override and set ICL
based on current reported by the USB driver otherwise set to USB500 mode.

CRs-Fixed: 963417
Change-Id: I31304cd2a4e710f4e450e6ec5a4da90c50fdfc88
Signed-off-by: default avatarAshay Jaiswal <ashayj@codeaurora.org>
parent 53681f7b

Documentation/devicetree/bindings/power/qpnp-smbcharger.txt

+3 −0
Original line number Diff line number Diff line
@@ -294,6 +294,9 @@ Optional Properties: 
				a required property.

- qcom,otg-pinctrl:		A boolean property to be used when OTG enable

				control is configured in pin control mode.

- qcom,override-usb-current	A boolean property to override the ICL limit

				for USB charger(SDP) based on the current

				reported by USB driver.



Example:

	qcom,qpnp-smbcharger {

drivers/power/qpnp-smbcharger.c

+33 −0
Original line number Diff line number Diff line
@@ -143,6 +143,7 @@ struct smbchg_chip { 
	bool				skip_usb_suspend_for_fake_battery;

	bool				hvdcp_not_supported;

	bool				otg_pinctrl;

	bool				cfg_override_usb_current;

	u8				original_usbin_allowance;

	struct parallel_usb_cfg		parallel;

	struct delayed_work		parallel_en_work;
@@ -1670,6 +1671,35 @@ static int smbchg_set_usb_current_max(struct smbchg_chip *chip, 
				(chip->wa_flags & SMBCHG_USB100_WA))

			current_ma = CURRENT_150_MA;



		/* handle special SDP case when USB reports high current */

		if (current_ma > CURRENT_900_MA) {

			if (chip->cfg_override_usb_current) {

				/*

				 * allow setting the current value as reported

				 * by USB driver.

				 */

				rc = smbchg_set_high_usb_chg_current(chip,

							current_ma);

				if (rc < 0) {

					pr_err("Couldn't set %dmA rc = %d\n",

							current_ma, rc);

					goto out;

				}

				rc = smbchg_masked_write(chip,

					chip->usb_chgpth_base + CMD_IL,

					ICL_OVERRIDE_BIT, ICL_OVERRIDE_BIT);

				if (rc < 0)

					pr_err("Couldn't set ICL override rc = %d\n",

							rc);

			} else {

				/* default to 500mA */

				current_ma = CURRENT_500_MA;

			}

			pr_smb(PR_STATUS,

				"override_usb_current=%d current_ma set to %d\n",

				chip->cfg_override_usb_current, current_ma);

		}



		if (current_ma < CURRENT_150_MA) {

			/* force 100mA */

			rc = smbchg_sec_masked_write(chip,
@@ -7365,6 +7395,9 @@ static int smb_parse_dt(struct smbchg_chip *chip) 


	chip->otg_pinctrl = of_property_read_bool(node, "qcom,otg-pinctrl");



	chip->cfg_override_usb_current = of_property_read_bool(node,

				"qcom,override-usb-current");



	return 0;

}