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Commit bed8ba95 authored by Chunmei Cai's avatar Chunmei Cai Committed by Ashay Jaiswal
Browse files

power: qpnp-smbcharger: Add support for detecting damaged battery 



Detect safety timer expired condition from charger and notify it to FG
through safety_timer_expired property. This can be used for PMi8952 V2.0
and future PMi chips. While at it, rename the safety-timeout irq to
wdog-timeout irq.

CRs-Fixed: 866074
Change-Id: I3a0f1f053a0038349bf5f704cf29eb5b84de2601
Signed-off-by: default avatarChunmei Cai <ccai@codeaurora.org>
parent 1989201a

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

+3 −3
Original line number Diff line number Diff line
@@ -18,7 +18,7 @@ end of this file. 
			limiting configuration.

- qcom,dc-chgpth:	DC charge path detection and input current

			limiting configuration.

- qcom,chg-misc:	Miscellaneous features such as safety timers

- qcom,chg-misc:	Miscellaneous features such as watchdog timers

			and SYSOK pin control

- qcom,chg-otg:		OTG configuration control.
@@ -86,7 +86,7 @@ Sub node required properties: 
						valid threshold.



			qcom,chgr-misc:

			 - safety-timeout-mins:	Charger watchdog timer

			 - wdog-timeout-mins:	Charger watchdog timer

						interrupt.

			 - temp-shutdown:	Triggers when charger goes

						overtemp and causes a shutdown.
@@ -370,7 +370,7 @@ Example: 


			interrupt-names =	"power-ok",

						"temp-shutdown",

						"safety-timeout",

						"wdog-timeout",

						"flash-fail",

						"otst2",

						"otst3";

arch/arm/boot/dts/qcom/msm-pmi8950.dtsi

+1 −1
Original line number Diff line number Diff line
@@ -290,7 +290,7 @@ 


				interrupt-names =	"power-ok",

							"temp-shutdown",

							"safety-timeout",

							"wdog-timeout",

							"flash-fail",

							"otst2",

							"otst3";

arch/arm/boot/dts/qcom/msm-pmi8994.dtsi

+1 −1
Original line number Diff line number Diff line
@@ -301,7 +301,7 @@ 


				interrupt-names =	"power-ok",

							"temp-shutdown",

							"safety-timeout",

							"wdog-timeout",

							"flash-fail",

							"otst2",

							"otst3";

drivers/power/qpnp-smbcharger.c

+22 −7
Original line number Diff line number Diff line
@@ -196,7 +196,7 @@ struct smbchg_chip { 
	struct mutex			taper_irq_lock;

	int				recharge_irq;

	int				fastchg_irq;

	int				safety_timeout_irq;

	int				wdog_timeout_irq;

	int				power_ok_irq;

	int				dcin_uv_irq;

	int				usbin_uv_irq;
@@ -5101,11 +5101,26 @@ static irqreturn_t vbat_low_handler(int irq, void *_chip) 
	return IRQ_HANDLED;

}



#define CHG_COMP_SFT_BIT	BIT(3)

static irqreturn_t chg_error_handler(int irq, void *_chip)

{

	struct smbchg_chip *chip = _chip;

	int rc = 0;

	u8 reg;



	pr_smb(PR_INTERRUPT, "chg-error triggered\n");



	rc = smbchg_read(chip, &reg, chip->chgr_base + RT_STS, 1);

	if (rc < 0) {

		dev_err(chip->dev, "Unable to read RT_STS rc = %d\n", rc);

	} else {

		pr_smb(PR_INTERRUPT, "triggered: 0x%02x\n", reg);

		if (reg & CHG_COMP_SFT_BIT)

			set_property_on_fg(chip,

					POWER_SUPPLY_PROP_SAFETY_TIMER_EXPIRED,

					1);

	}



	smbchg_parallel_usb_check_ok(chip);

	if (chip->psy_registered)

		power_supply_changed(&chip->batt_psy);
@@ -5179,13 +5194,13 @@ static irqreturn_t recharge_handler(int irq, void *_chip) 
	return IRQ_HANDLED;

}



static irqreturn_t safety_timeout_handler(int irq, void *_chip)

static irqreturn_t wdog_timeout_handler(int irq, void *_chip)

{

	struct smbchg_chip *chip = _chip;

	u8 reg = 0;



	smbchg_read(chip, &reg, chip->misc_base + RT_STS, 1);

	pr_warn_ratelimited("safety timeout rt_stat = 0x%02x\n", reg);

	pr_warn_ratelimited("wdog timeout rt_stat = 0x%02x\n", reg);

	if (chip->psy_registered)

		power_supply_changed(&chip->batt_psy);

	smbchg_charging_status_change(chip);
@@ -6492,11 +6507,11 @@ static int smbchg_request_irqs(struct smbchg_chip *chip) 
			REQUEST_IRQ(chip, spmi_resource, chip->chg_hot_irq,

				"temp-shutdown", chg_hot_handler, flags, rc);

			REQUEST_IRQ(chip, spmi_resource,

				chip->safety_timeout_irq,

				"safety-timeout",

				safety_timeout_handler, flags, rc);

				chip->wdog_timeout_irq,

				"wdog-timeout",

				wdog_timeout_handler, flags, rc);

			enable_irq_wake(chip->chg_hot_irq);

			enable_irq_wake(chip->safety_timeout_irq);

			enable_irq_wake(chip->wdog_timeout_irq);

			break;

		case SMBCHG_OTG_SUBTYPE:

			break;