Merge "power: qcom-battery: Add sysfs to restrict charging" (72bcf7d2) · Commits · e / devices / android_kernel_sony_msm8998

drivers/power/supply/qcom/battery.c

+75 −0

Original line number	Diff line number	Diff line
		@@ -35,12 +35,15 @@
		#define PARALLEL_PSY_VOTER "PARALLEL_PSY_VOTER"
		#define PL_HW_ABSENT_VOTER "PL_HW_ABSENT_VOTER"
		#define PL_VOTER "PL_VOTER"
		#define RESTRICT_CHG_VOTER "RESTRICT_CHG_VOTER"

		struct pl_data {
		int pl_mode;
		int slave_pct;
		int taper_pct;
		int slave_fcc_ua;
		int restricted_current;
		bool restricted_charging_enabled;
		struct votable *fcc_votable;
		struct votable *fv_votable;
		struct votable *pl_disable_votable;
		@@ -80,6 +83,8 @@ module_param_named(debug_mask, debug_mask, int, S_IRUSR \| S_IWUSR);
		enum {
		VER = 0,
		SLAVE_PCT,
		RESTRICT_CHG_ENABLE,
		RESTRICT_CHG_CURRENT,
		};

		/*******
		@@ -180,10 +185,78 @@ static ssize_t slave_pct_store(struct class c, struct class_attribute attr,
		return count;
		}

		/**********************
		* RESTICTED CHARGIGNG *
		***********************/
		static ssize_t restrict_chg_show(struct class c, struct class_attribute attr,
		char *ubuf)
		{
		struct pl_data *chip = container_of(c, struct pl_data,
		qcom_batt_class);

		return snprintf(ubuf, PAGE_SIZE, "%d\n",
		chip->restricted_charging_enabled);
		}

		static ssize_t restrict_chg_store(struct class c, struct class_attribute attr,
		const char *ubuf, size_t count)
		{
		struct pl_data *chip = container_of(c, struct pl_data,
		qcom_batt_class);
		unsigned long val;

		if (kstrtoul(ubuf, 10, &val))
		return -EINVAL;

		if (chip->restricted_charging_enabled == !!val)
		goto no_change;

		chip->restricted_charging_enabled = !!val;

		vote(chip->fcc_votable, RESTRICT_CHG_VOTER,
		chip->restricted_charging_enabled,
		chip->restricted_current);

		no_change:
		return count;
		}

		static ssize_t restrict_cur_show(struct class c, struct class_attribute attr,
		char *ubuf)
		{
		struct pl_data *chip = container_of(c, struct pl_data,
		qcom_batt_class);

		return snprintf(ubuf, PAGE_SIZE, "%d\n", chip->restricted_current);
		}

		static ssize_t restrict_cur_store(struct class c, struct class_attribute attr,
		const char *ubuf, size_t count)
		{
		struct pl_data *chip = container_of(c, struct pl_data,
		qcom_batt_class);
		unsigned long val;

		if (kstrtoul(ubuf, 10, &val))
		return -EINVAL;

		chip->restricted_current = val;

		vote(chip->fcc_votable, RESTRICT_CHG_VOTER,
		chip->restricted_charging_enabled,
		chip->restricted_current);

		return count;
		}

		static struct class_attribute pl_attributes[] = {
		[VER] = __ATTR_RO(version),
		[SLAVE_PCT] = __ATTR(parallel_pct, S_IRUGO \| S_IWUSR,
		slave_pct_show, slave_pct_store),
		[RESTRICT_CHG_ENABLE] = __ATTR(restricted_charging, S_IRUGO \| S_IWUSR,
		restrict_chg_show, restrict_chg_store),
		[RESTRICT_CHG_CURRENT] = __ATTR(restricted_current, S_IRUGO \| S_IWUSR,
		restrict_cur_show, restrict_cur_store),
		__ATTR_NULL,
		};

		@@ -750,6 +823,7 @@ static int pl_determine_initial_status(struct pl_data *chip)
		return 0;
		}

		#define DEFAULT_RESTRICTED_CURRENT_UA 1000000
		static int pl_init(void)
		{
		struct pl_data *chip;
		@@ -759,6 +833,7 @@ static int pl_init(void)
		if (!chip)
		return -ENOMEM;
		chip->slave_pct = 50;
		chip->restricted_current = DEFAULT_RESTRICTED_CURRENT_UA;

		chip->pl_ws = wakeup_source_register("qcom-battery");
		if (!chip->pl_ws)