Merge "power: qpnp-linear-charger: Add an led device controlled by LBC" (d2a70ea8) · Commits · e / devices / samsung / android_kernel_samsung_msm8916

Documentation/devicetree/bindings/power/qpnp-linear-charger.txt

+4 −0

Original line number	Diff line number	Diff line
		@@ -93,6 +93,10 @@ Parent node optional properties:
		BPD and disables BTC. Declare this node
		only if you are using an external charger
		and not the PMIC internal LBC.
		- qcom,chgr-led-support There is a current sink device in linear
		charger module, it is used to control a
		led which can act as a charger led as well
		as a general notification led.

		Sub node required structure:
		- A qcom,charger node must be a child of an SPMI node that has specified

drivers/power/qpnp-linear-charger.c

+80 −0

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@
		#include <linux/qpnp/qpnp-adc.h>
		#include <linux/alarmtimer.h>
		#include <linux/bitops.h>
		#include <linux/leds.h>

		#define CREATE_MASK(NUM_BITS, POS) \
		((unsigned char) (((1 << (NUM_BITS)) - 1) << (POS)))
		@@ -267,6 +268,7 @@ struct vddtrim_map vddtrim_map[] = {
		* @cfg_charger_detect_eoc: charger can detect end of charging
		* @cfg_disable_vbatdet_based_recharge: keep VBATDET comparator overriden to
		* low and VBATDET irq disabled.
		* @cfg_chgr_led_support: support charger led work.
		* @cfg_safe_current: battery safety current setting
		* @cfg_hot_batt_p: hot battery threshold setting
		* @cfg_cold_batt_p: eold battery threshold setting
		@@ -317,6 +319,7 @@ struct qpnp_lbc_chip {
		bool cfg_use_fake_battery;
		bool fastchg_on;
		bool cfg_use_external_charger;
		bool cfg_chgr_led_support;
		unsigned int cfg_warm_bat_chg_ma;
		unsigned int cfg_cool_bat_chg_ma;
		unsigned int cfg_safe_voltage_mv;
		@@ -361,6 +364,7 @@ struct qpnp_lbc_chip {
		struct qpnp_adc_tm_btm_param adc_param;
		struct qpnp_vadc_chip *vadc_dev;
		struct qpnp_adc_tm_chip *adc_tm_dev;
		struct led_classdev led_cdev;
		};

		static void qpnp_lbc_enable_irq(struct qpnp_lbc_chip *chip,
		@@ -971,6 +975,68 @@ static int qpnp_lbc_tchg_max_set(struct qpnp_lbc_chip *chip, int minutes)
		return rc;
		}

		#define LBC_CHGR_LED 0x4D
		#define CHGR_LED_ON BIT(0)
		#define CHGR_LED_OFF 0x0
		#define CHGR_LED_STAT_MASK LBC_MASK(1, 0)
		static void qpnp_lbc_chgr_led_brightness_set(struct led_classdev *cdev,
		enum led_brightness value)
		{
		struct qpnp_lbc_chip *chip = container_of(cdev, struct qpnp_lbc_chip,
		led_cdev);
		u8 reg;
		int rc;

		if (value > LED_FULL)
		value = LED_FULL;

		pr_debug("set the charger led brightness to value=%d\n", value);
		reg = (value > LED_OFF) ? CHGR_LED_ON : CHGR_LED_OFF;

		rc = qpnp_lbc_masked_write(chip, chip->chgr_base + LBC_CHGR_LED,
		CHGR_LED_STAT_MASK, reg);
		if (rc)
		pr_err("Failed to write charger led rc=%d\n", rc);
		}

		static enum
		led_brightness qpnp_lbc_chgr_led_brightness_get(struct led_classdev *cdev)
		{

		struct qpnp_lbc_chip *chip = container_of(cdev, struct qpnp_lbc_chip,
		led_cdev);
		u8 reg_val, chgr_led_sts;
		int rc;

		rc = qpnp_lbc_read(chip, chip->chgr_base + LBC_CHGR_LED,
		&reg_val, 1);
		if (rc) {
		pr_err("Failed to read charger led rc=%d\n", rc);
		return rc;
		}

		chgr_led_sts = reg_val & CHGR_LED_STAT_MASK;
		pr_debug("charger led brightness chgr_led_sts=%d\n", chgr_led_sts);

		return (chgr_led_sts == CHGR_LED_ON) ? LED_FULL : LED_OFF;
		}

		static int qpnp_lbc_register_chgr_led(struct qpnp_lbc_chip *chip)
		{
		int rc;

		chip->led_cdev.name = "red";
		chip->led_cdev.brightness_set = qpnp_lbc_chgr_led_brightness_set;
		chip->led_cdev.brightness_get = qpnp_lbc_chgr_led_brightness_get;

		rc = led_classdev_register(chip->dev, &chip->led_cdev);
		if (rc)
		dev_err(chip->dev, "unable to register charger led, rc=%d\n",
		rc);

		return rc;
		};

		static int qpnp_lbc_vbatdet_override(struct qpnp_lbc_chip *chip, int ovr_val)
		{
		int rc;
		@@ -1941,6 +2007,12 @@ static int qpnp_charger_read_dt_props(struct qpnp_lbc_chip *chip)
		chip->cfg_disable_vbatdet_based_recharge =
		of_property_read_bool(chip->spmi->dev.of_node,
		"qcom,disable-vbatdet-based-recharge");

		/* Get the charger led support property */
		chip->cfg_chgr_led_support =
		of_property_read_bool(chip->spmi->dev.of_node,
		"qcom,chgr-led-support");

		/* Disable charging when faking battery values */
		if (chip->cfg_use_fake_battery)
		chip->cfg_charging_disabled = true;
		@@ -2563,6 +2635,14 @@ static int qpnp_lbc_probe(struct spmi_device *spmi)
		return rc;
		}

		if (chip->cfg_chgr_led_support) {
		rc = qpnp_lbc_register_chgr_led(chip);
		if (rc) {
		pr_err("unable to register charger led rc=%d\n", rc);
		return rc;
		}
		}

		if (chip->bat_if_base) {
		chip->batt_present = qpnp_lbc_is_batt_present(chip);
		chip->batt_psy.name = "battery";