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Commit c4582f9d authored by Rui Miguel Silva's avatar Rui Miguel Silva Committed by Greg Kroah-Hartman
Browse files

greybus: power_supply: add callback to handle power supply changes 



When checking for property changes we may need to act upon that change
besides reporting it using power_supply_changed. So, add a function that
will be call if the specific property changed.

As at it, adjust some indentation of the psy_props_changes array.

Signed-off-by: default avatarRui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent 6198f892

drivers/staging/greybus/power_supply.c

+20 −8
Original line number Diff line number Diff line
@@ -70,17 +70,22 @@ static unsigned int update_interval_max = 30 * HZ; 
struct gb_power_supply_changes {

	enum power_supply_property	prop;

	u32				tolerance_change;

	void (*prop_changed)(struct gb_power_supply *gbpsy,

			     struct gb_power_supply_prop *prop);

};



static const struct gb_power_supply_changes psy_props_changes[] = {

	{	.prop			= GB_POWER_SUPPLY_PROP_STATUS,

		.tolerance_change	= 0,

		.prop_changed		= NULL,

	},

	{	.prop			= GB_POWER_SUPPLY_PROP_TEMP,

		.tolerance_change	= 500,

		.prop_changed		= NULL,

	},

	{	.prop			= GB_POWER_SUPPLY_PROP_ONLINE,

		.tolerance_change	= 0,

		.prop_changed		= NULL,

	},

};
@@ -349,18 +354,25 @@ static void check_changed(struct gb_power_supply *gbpsy, 
	const struct gb_power_supply_changes *psyc;

	int val = prop->val;

	int prev_val = prop->previous_val;

	bool changed = false;

	int i;



	for (i = 0; i < ARRAY_SIZE(psy_props_changes); i++) {

		psyc = &psy_props_changes[i];

		if (prop->prop == psyc->prop) {

			if (!psyc->tolerance_change)

				gbpsy->changed = true;

				changed = true;

			else if (val < prev_val &&

				 prev_val - val > psyc->tolerance_change)

				gbpsy->changed = true;

				changed = true;

			else if (val > prev_val &&

				 val - prev_val > psyc->tolerance_change)

				changed = true;



			if (changed && psyc->prop_changed)

				psyc->prop_changed(gbpsy, prop);



			if (changed)

				gbpsy->changed = true;

			break;

		}