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Commit ef5d6390 authored by Subbaraman Narayanamurthy's avatar Subbaraman Narayanamurthy
Browse files

leds: qpnp-flash-v2: Add support for configuring OTST thresholds 



Add support for configuring the three thermal mitigation
thresholds from device tree.

CRs-Fixed: 1060212
Change-Id: Iafb7915e196a18b5f8076dda8fb06a4bd71a8e6e
Signed-off-by: default avatarDevesh Jhunjhunwala <deveshj@codeaurora.org>
Signed-off-by: default avatarSubbaraman Narayanamurthy <subbaram@codeaurora.org>
parent 5c312a4f

Documentation/devicetree/bindings/leds/leds-qpnp-flash-v2.txt

+12 −0
Original line number Diff line number Diff line
@@ -99,6 +99,18 @@ Optional properties: 
				  Allowed values are:

				  0, 15, 30, 45 for pmicobalt.

				  0, 20, 40, 60 for pm2falcon.

- qcom,thermal-thrsh1		: Integer property to specify OTST1 threshold

				  for thermal mitigation. Unit is in Celsius.

				  Accepted values are:

				  85, 79, 73, 67, 109, 103, 97, 91.

- qcom,thermal-thrsh2		: Integer property to specify OTST2 threshold

				  for thermal mitigation. Unit is in Celsius.

				  Accepted values are:

				  110, 104, 98, 92, 134, 128, 122, 116.

- qcom,thermal-thrsh3		: Integer property to specify OTST3 threshold

				  for thermal mitigation. Unit is in Celsius.

				  Accepted values are:

				  125, 119, 113, 107, 149, 143, 137, 131.

- qcom,hw-strobe-option	: Integer type to specify hardware strobe option. Based on the specified

			  value, additional GPIO configuration may be required to provide strobing

			  support. Supported values are:

drivers/leds/leds-qpnp-flash-v2.c

+79 −0
Original line number Diff line number Diff line
@@ -114,6 +114,7 @@ 
#define	THERMAL_DEBOUNCE_TIME_MAX		64

#define	THERMAL_DERATE_HYSTERESIS_MAX		3

#define	FLASH_LED_THERMAL_THRSH_MIN		3

#define	FLASH_LED_THERMAL_THRSH_MAX		7

#define	FLASH_LED_THERMAL_OTST_LEVELS		3

#define	FLASH_LED_VLED_MAX_DEFAULT_UV		3500000

#define	FLASH_LED_IBATT_OCP_THRESH_DEFAULT_UA	4500000
@@ -219,6 +220,9 @@ struct flash_led_platform_data { 
	int			thermal_derate_fast;

	int			thermal_hysteresis;

	int			thermal_debounce;

	int			thermal_thrsh1;

	int			thermal_thrsh2;

	int			thermal_thrsh3;

	u32			led1n2_iclamp_low_ma;

	u32			led1n2_iclamp_mid_ma;

	u32			led3_iclamp_low_ma;
@@ -267,6 +271,18 @@ static int thermal_derate_fast_table[] = { 
	32, 64, 96, 128, 256, 384, 512,

};



static int otst1_threshold_table[] = {

	85, 79, 73, 67, 109, 103, 97, 91,

};



static int otst2_threshold_table[] = {

	110, 104, 98, 92, 134, 128, 122, 116,

};



static int otst3_threshold_table[] = {

	125, 119, 113, 107, 149, 143, 137, 131,

};



static int qpnp_flash_led_read(struct qpnp_flash_led *led, u16 addr, u8 *data)

{

	int rc;
@@ -416,6 +432,33 @@ static int qpnp_flash_led_init_settings(struct qpnp_flash_led *led) 
			return rc;

	}



	if (led->pdata->thermal_thrsh1 >= 0) {

		rc = qpnp_flash_led_masked_write(led,

				FLASH_LED_REG_THERMAL_THRSH1(led->base),

				FLASH_LED_THERMAL_THRSH_MASK,

				led->pdata->thermal_thrsh1);

		if (rc < 0)

			return rc;

	}



	if (led->pdata->thermal_thrsh2 >= 0) {

		rc = qpnp_flash_led_masked_write(led,

				FLASH_LED_REG_THERMAL_THRSH2(led->base),

				FLASH_LED_THERMAL_THRSH_MASK,

				led->pdata->thermal_thrsh2);

		if (rc < 0)

			return rc;

	}



	if (led->pdata->thermal_thrsh3 >= 0) {

		rc = qpnp_flash_led_masked_write(led,

				FLASH_LED_REG_THERMAL_THRSH3(led->base),

				FLASH_LED_THERMAL_THRSH_MASK,

				led->pdata->thermal_thrsh3);

		if (rc < 0)

			return rc;

	}



	rc = qpnp_flash_led_masked_write(led,

			FLASH_LED_REG_VPH_DROOP_DEBOUNCE(led->base),

			FLASH_LED_VPH_DROOP_DEBOUNCE_MASK,
@@ -1751,6 +1794,42 @@ static int qpnp_flash_led_parse_common_dt(struct qpnp_flash_led *led, 
		return rc;

	}



	led->pdata->thermal_thrsh1 = -EINVAL;

	rc = of_property_read_u32(node, "qcom,thermal-thrsh1", &val);

	if (!rc) {

		led->pdata->thermal_thrsh1 =

			get_code_from_table(otst1_threshold_table,

				ARRAY_SIZE(otst1_threshold_table), val);

	} else if (rc != -EINVAL) {

		dev_err(&led->pdev->dev, "Unable to read thermal thrsh1, rc=%d\n",

				rc);

		return rc;

	}



	led->pdata->thermal_thrsh2 = -EINVAL;

	rc = of_property_read_u32(node, "qcom,thermal-thrsh2", &val);

	if (!rc) {

		led->pdata->thermal_thrsh2 =

			get_code_from_table(otst2_threshold_table,

				ARRAY_SIZE(otst2_threshold_table), val);

	} else if (rc != -EINVAL) {

		dev_err(&led->pdev->dev, "Unable to read thermal thrsh2, rc=%d\n",

				rc);

		return rc;

	}



	led->pdata->thermal_thrsh3 = -EINVAL;

	rc = of_property_read_u32(node, "qcom,thermal-thrsh3", &val);

	if (!rc) {

		led->pdata->thermal_thrsh3 =

			get_code_from_table(otst3_threshold_table,

				ARRAY_SIZE(otst3_threshold_table), val);

	} else if (rc != -EINVAL) {

		dev_err(&led->pdev->dev, "Unable to read thermal thrsh3, rc=%d\n",

				rc);

		return rc;

	}



	led->pdata->vph_droop_debounce = FLASH_LED_VPH_DROOP_DEBOUNCE_DEFAULT;

	rc = of_property_read_u32(node, "qcom,vph-droop-debounce-us", &val);

	if (!rc) {