power: move power supply drivers to power/supply

This moves all power supply drivers from drivers/power/
to drivers/power/supply/. The intention is a cleaner
source tree, since drivers/power/ also contains frameworks
unrelated to power supply, like adaptive voltage scaling.

Signed-off-by: Sebastian Reichel <sre@kernel.org>

1 files changed, 170 insertions, 0 deletions

diff --git a/drivers/power/supply/power_supply_leds.c b/drivers/power/supply/power_supply_leds.c
new file mode 100644
index 000000000000..2277ad9c2f68
--- /dev/null
+++ b/drivers/power/supply/power_supply_leds.c
@@ -0,0 +1,170 @@
+/*
+ *  LEDs triggers for power supply class
+ *
+ *  Copyright © 2007  Anton Vorontsov <cbou@mail.ru>
+ *  Copyright © 2004  Szabolcs Gyurko
+ *  Copyright © 2003  Ian Molton <spyro@f2s.com>
+ *
+ *  Modified: 2004, Oct     Szabolcs Gyurko
+ *
+ *  You may use this code as per GPL version 2
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+
+#include "power_supply.h"
+
+/* Battery specific LEDs triggers. */
+
+static void power_supply_update_bat_leds(struct power_supply *psy)
+{
+	union power_supply_propval status;
+	unsigned long delay_on = 0;
+	unsigned long delay_off = 0;
+
+	if (power_supply_get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
+		return;
+
+	dev_dbg(&psy->dev, "%s %d\n", __func__, status.intval);
+
+	switch (status.intval) {
+	case POWER_SUPPLY_STATUS_FULL:
+		led_trigger_event(psy->charging_full_trig, LED_FULL);
+		led_trigger_event(psy->charging_trig, LED_OFF);
+		led_trigger_event(psy->full_trig, LED_FULL);
+		led_trigger_event(psy->charging_blink_full_solid_trig,
+			LED_FULL);
+		break;
+	case POWER_SUPPLY_STATUS_CHARGING:
+		led_trigger_event(psy->charging_full_trig, LED_FULL);
+		led_trigger_event(psy->charging_trig, LED_FULL);
+		led_trigger_event(psy->full_trig, LED_OFF);
+		led_trigger_blink(psy->charging_blink_full_solid_trig,
+			&delay_on, &delay_off);
+		break;
+	default:
+		led_trigger_event(psy->charging_full_trig, LED_OFF);
+		led_trigger_event(psy->charging_trig, LED_OFF);
+		led_trigger_event(psy->full_trig, LED_OFF);
+		led_trigger_event(psy->charging_blink_full_solid_trig,
+			LED_OFF);
+		break;
+	}
+}
+
+static int power_supply_create_bat_triggers(struct power_supply *psy)
+{
+	psy->charging_full_trig_name = kasprintf(GFP_KERNEL,
+					"%s-charging-or-full", psy->desc->name);
+	if (!psy->charging_full_trig_name)
+		goto charging_full_failed;
+
+	psy->charging_trig_name = kasprintf(GFP_KERNEL,
+					"%s-charging", psy->desc->name);
+	if (!psy->charging_trig_name)
+		goto charging_failed;
+
+	psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->desc->name);
+	if (!psy->full_trig_name)
+		goto full_failed;
+
+	psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL,
+		"%s-charging-blink-full-solid", psy->desc->name);
+	if (!psy->charging_blink_full_solid_trig_name)
+		goto charging_blink_full_solid_failed;
+
+	led_trigger_register_simple(psy->charging_full_trig_name,
+				    &psy->charging_full_trig);
+	led_trigger_register_simple(psy->charging_trig_name,
+				    &psy->charging_trig);
+	led_trigger_register_simple(psy->full_trig_name,
+				    &psy->full_trig);
+	led_trigger_register_simple(psy->charging_blink_full_solid_trig_name,
+				    &psy->charging_blink_full_solid_trig);
+
+	return 0;
+
+charging_blink_full_solid_failed:
+	kfree(psy->full_trig_name);
+full_failed:
+	kfree(psy->charging_trig_name);
+charging_failed:
+	kfree(psy->charging_full_trig_name);
+charging_full_failed:
+	return -ENOMEM;
+}
+
+static void power_supply_remove_bat_triggers(struct power_supply *psy)
+{
+	led_trigger_unregister_simple(psy->charging_full_trig);
+	led_trigger_unregister_simple(psy->charging_trig);
+	led_trigger_unregister_simple(psy->full_trig);
+	led_trigger_unregister_simple(psy->charging_blink_full_solid_trig);
+	kfree(psy->charging_blink_full_solid_trig_name);
+	kfree(psy->full_trig_name);
+	kfree(psy->charging_trig_name);
+	kfree(psy->charging_full_trig_name);
+}
+
+/* Generated power specific LEDs triggers. */
+
+static void power_supply_update_gen_leds(struct power_supply *psy)
+{
+	union power_supply_propval online;
+
+	if (power_supply_get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online))
+		return;
+
+	dev_dbg(&psy->dev, "%s %d\n", __func__, online.intval);
+
+	if (online.intval)
+		led_trigger_event(psy->online_trig, LED_FULL);
+	else
+		led_trigger_event(psy->online_trig, LED_OFF);
+}
+
+static int power_supply_create_gen_triggers(struct power_supply *psy)
+{
+	psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online",
+					  psy->desc->name);
+	if (!psy->online_trig_name)
+		return -ENOMEM;
+
+	led_trigger_register_simple(psy->online_trig_name, &psy->online_trig);
+
+	return 0;
+}
+
+static void power_supply_remove_gen_triggers(struct power_supply *psy)
+{
+	led_trigger_unregister_simple(psy->online_trig);
+	kfree(psy->online_trig_name);
+}
+
+/* Choice what triggers to create&update. */
+
+void power_supply_update_leds(struct power_supply *psy)
+{
+	if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY)
+		power_supply_update_bat_leds(psy);
+	else
+		power_supply_update_gen_leds(psy);
+}
+
+int power_supply_create_triggers(struct power_supply *psy)
+{
+	if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY)
+		return power_supply_create_bat_triggers(psy);
+	return power_supply_create_gen_triggers(psy);
+}
+
+void power_supply_remove_triggers(struct power_supply *psy)
+{
+	if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY)
+		power_supply_remove_bat_triggers(psy);
+	else
+		power_supply_remove_gen_triggers(psy);
+}