power_supply: Add test_power driver

Just a handy driver that is used for testing purposes. Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

power_supply: Add test_power driver
Just a handy driver that is used for testing purposes. Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Anton Vorontsov
1 parent 06b9e650ce
Showing 3 changed files with 169 additions and 0 deletions Side-by-side Diff
drivers/power/Kconfig
drivers/power/Makefile
drivers/power/test_power.c
@@ -57,6 +57,11 @@
           Say Y here to enable support for the power management unit
 	  provided by the Wolfson Microelectronics WM8350 PMIC.
  
+config TEST_POWER
+	tristate "Test power driver"
+	help
+	  This driver is used for testing. It's safe to say M here.
+
 config BATTERY_DS2760
 	tristate "DS2760 battery driver (HP iPAQ & others)"
 	select W1
@@ -20,6 +20,7 @@
 obj-$(CONFIG_WM831X_BACKUP)	+= wm831x_backup.o
 obj-$(CONFIG_WM831X_POWER)	+= wm831x_power.o
 obj-$(CONFIG_WM8350_POWER)	+= wm8350_power.o
+obj-$(CONFIG_TEST_POWER)	+= test_power.o
  
 obj-$(CONFIG_BATTERY_DS2760)	+= ds2760_battery.o
 obj-$(CONFIG_BATTERY_DS2782)	+= ds2782_battery.o
+/*
+ * Power supply driver for testing.
+ *
+ * Copyright 2010  Anton Vorontsov <cbouatmailru@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/power_supply.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/vermagic.h>
+
+static int test_power_ac_online = 1;
+static int test_power_battery_status = POWER_SUPPLY_STATUS_CHARGING;
+
+static int test_power_get_ac_property(struct power_supply *psy,
+				      enum power_supply_property psp,
+				      union power_supply_propval *val)
+{
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+		val->intval = test_power_ac_online;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int test_power_get_battery_property(struct power_supply *psy,
+					   enum power_supply_property psp,
+					   union power_supply_propval *val)
+{
+	switch (psp) {
+	case POWER_SUPPLY_PROP_MODEL_NAME:
+		val->strval = "Test battery";
+		break;
+	case POWER_SUPPLY_PROP_MANUFACTURER:
+		val->strval = "Linux";
+		break;
+	case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+		val->strval = UTS_RELEASE;
+		break;
+	case POWER_SUPPLY_PROP_STATUS:
+		val->intval = test_power_battery_status;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+		break;
+	case POWER_SUPPLY_PROP_HEALTH:
+		val->intval = POWER_SUPPLY_HEALTH_GOOD;
+		break;
+	case POWER_SUPPLY_PROP_TECHNOLOGY:
+		val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+		break;
+	case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+		val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+		break;
+	case POWER_SUPPLY_PROP_CAPACITY:
+		val->intval = 50;
+		break;
+	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+	case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
+		val->intval = 3600;
+		break;
+	default:
+		pr_info("%s: some properties deliberately report errors.\n",
+			__func__);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static enum power_supply_property test_power_ac_props[] = {
+	POWER_SUPPLY_PROP_ONLINE,
+};
+
+static enum power_supply_property test_power_battery_props[] = {
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_CHARGE_TYPE,
+	POWER_SUPPLY_PROP_HEALTH,
+	POWER_SUPPLY_PROP_TECHNOLOGY,
+	POWER_SUPPLY_PROP_CHARGE_FULL,
+	POWER_SUPPLY_PROP_CHARGE_EMPTY,
+	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+	POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+	POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
+	POWER_SUPPLY_PROP_MODEL_NAME,
+	POWER_SUPPLY_PROP_MANUFACTURER,
+	POWER_SUPPLY_PROP_SERIAL_NUMBER,
+};
+
+static char *test_power_ac_supplied_to[] = {
+	"test_battery",
+};
+
+static struct power_supply test_power_supplies[] = {
+	{
+		.name = "test_ac",
+		.type = POWER_SUPPLY_TYPE_MAINS,
+		.supplied_to = test_power_ac_supplied_to,
+		.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
+		.properties = test_power_ac_props,
+		.num_properties = ARRAY_SIZE(test_power_ac_props),
+		.get_property = test_power_get_ac_property,
+	}, {
+		.name = "test_battery",
+		.type = POWER_SUPPLY_TYPE_BATTERY,
+		.properties = test_power_battery_props,
+		.num_properties = ARRAY_SIZE(test_power_battery_props),
+		.get_property = test_power_get_battery_property,
+	},
+};
+
+static int __init test_power_init(void)
+{
+	int i;
+	int ret;
+
+	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
+		ret = power_supply_register(NULL, &test_power_supplies[i]);
+		if (ret) {
+			pr_err("%s: failed to register %s\n", __func__,
+				test_power_supplies[i].name);
+			goto failed;
+		}
+	}
+
+	return 0;
+failed:
+	while (--i >= 0)
+		power_supply_unregister(&test_power_supplies[i]);
+	return ret;
+}
+module_init(test_power_init);
+
+static void __exit test_power_exit(void)
+{
+	int i;
+
+	/* Let's see how we handle changes... */
+	test_power_ac_online = 0;
+	test_power_battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
+	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
+		power_supply_changed(&test_power_supplies[i]);
+	pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n",
+		__func__);
+	ssleep(10);
+
+	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
+		power_supply_unregister(&test_power_supplies[i]);
+}
+module_exit(test_power_exit);
+
+MODULE_DESCRIPTION("Power supply driver for testing");
+MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
+MODULE_LICENSE("GPL");
...	...	@@ -57,6 +57,11 @@
57	57	Say Y here to enable support for the power management unit
58	58	provided by the Wolfson Microelectronics WM8350 PMIC.
59	59
	60	+config TEST_POWER
	61	+ tristate "Test power driver"
	62	+ help
	63	+ This driver is used for testing. It's safe to say M here.
	64	+
60	65	config BATTERY_DS2760
61	66	tristate "DS2760 battery driver (HP iPAQ & others)"
62	67	select W1
...	...	@@ -20,6 +20,7 @@
20	20	obj-$(CONFIG_WM831X_BACKUP) += wm831x_backup.o
21	21	obj-$(CONFIG_WM831X_POWER) += wm831x_power.o
22	22	obj-$(CONFIG_WM8350_POWER) += wm8350_power.o
	23	+obj-$(CONFIG_TEST_POWER) += test_power.o
23	24
24	25	obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o
25	26	obj-$(CONFIG_BATTERY_DS2782) += ds2782_battery.o
	1	+/*
	2	+ * Power supply driver for testing.
	3	+ *
	4	+ * Copyright 2010 Anton Vorontsov <cbouatmailru@gmail.com>
	5	+ *
	6	+ * This program is free software; you can redistribute it and/or modify
	7	+ * it under the terms of the GNU General Public License version 2 as
	8	+ * published by the Free Software Foundation.
	9	+ */
	10	+
	11	+#include <linux/kernel.h>
	12	+#include <linux/module.h>
	13	+#include <linux/power_supply.h>
	14	+#include <linux/errno.h>
	15	+#include <linux/delay.h>
	16	+#include <linux/vermagic.h>
	17	+
	18	+static int test_power_ac_online = 1;
	19	+static int test_power_battery_status = POWER_SUPPLY_STATUS_CHARGING;
	20	+
	21	+static int test_power_get_ac_property(struct power_supply *psy,
	22	+ enum power_supply_property psp,
	23	+ union power_supply_propval *val)
	24	+{
	25	+ switch (psp) {
	26	+ case POWER_SUPPLY_PROP_ONLINE:
	27	+ val->intval = test_power_ac_online;
	28	+ break;
	29	+ default:
	30	+ return -EINVAL;
	31	+ }
	32	+ return 0;
	33	+}
	34	+
	35	+static int test_power_get_battery_property(struct power_supply *psy,
	36	+ enum power_supply_property psp,
	37	+ union power_supply_propval *val)
	38	+{
	39	+ switch (psp) {
	40	+ case POWER_SUPPLY_PROP_MODEL_NAME:
	41	+ val->strval = "Test battery";
	42	+ break;
	43	+ case POWER_SUPPLY_PROP_MANUFACTURER:
	44	+ val->strval = "Linux";
	45	+ break;
	46	+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
	47	+ val->strval = UTS_RELEASE;
	48	+ break;
	49	+ case POWER_SUPPLY_PROP_STATUS:
	50	+ val->intval = test_power_battery_status;
	51	+ break;
	52	+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
	53	+ val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
	54	+ break;
	55	+ case POWER_SUPPLY_PROP_HEALTH:
	56	+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
	57	+ break;
	58	+ case POWER_SUPPLY_PROP_TECHNOLOGY:
	59	+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
	60	+ break;
	61	+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
	62	+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
	63	+ break;
	64	+ case POWER_SUPPLY_PROP_CAPACITY:
	65	+ val->intval = 50;
	66	+ break;
	67	+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
	68	+ case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
	69	+ val->intval = 3600;
	70	+ break;
	71	+ default:
	72	+ pr_info("%s: some properties deliberately report errors.\n",
	73	+ __func__);
	74	+ return -EINVAL;
	75	+ }
	76	+ return 0;
	77	+}
	78	+
	79	+static enum power_supply_property test_power_ac_props[] = {
	80	+ POWER_SUPPLY_PROP_ONLINE,
	81	+};
	82	+
	83	+static enum power_supply_property test_power_battery_props[] = {
	84	+ POWER_SUPPLY_PROP_STATUS,
	85	+ POWER_SUPPLY_PROP_CHARGE_TYPE,
	86	+ POWER_SUPPLY_PROP_HEALTH,
	87	+ POWER_SUPPLY_PROP_TECHNOLOGY,
	88	+ POWER_SUPPLY_PROP_CHARGE_FULL,
	89	+ POWER_SUPPLY_PROP_CHARGE_EMPTY,
	90	+ POWER_SUPPLY_PROP_CAPACITY,
	91	+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
	92	+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
	93	+ POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
	94	+ POWER_SUPPLY_PROP_MODEL_NAME,
	95	+ POWER_SUPPLY_PROP_MANUFACTURER,
	96	+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
	97	+};
	98	+
	99	+static char *test_power_ac_supplied_to[] = {
	100	+ "test_battery",
	101	+};
	102	+
	103	+static struct power_supply test_power_supplies[] = {
	104	+ {
	105	+ .name = "test_ac",
	106	+ .type = POWER_SUPPLY_TYPE_MAINS,
	107	+ .supplied_to = test_power_ac_supplied_to,
	108	+ .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
	109	+ .properties = test_power_ac_props,
	110	+ .num_properties = ARRAY_SIZE(test_power_ac_props),
	111	+ .get_property = test_power_get_ac_property,
	112	+ }, {
	113	+ .name = "test_battery",
	114	+ .type = POWER_SUPPLY_TYPE_BATTERY,
	115	+ .properties = test_power_battery_props,
	116	+ .num_properties = ARRAY_SIZE(test_power_battery_props),
	117	+ .get_property = test_power_get_battery_property,
	118	+ },
	119	+};
	120	+
	121	+static int __init test_power_init(void)
	122	+{
	123	+ int i;
	124	+ int ret;
	125	+
	126	+ for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
	127	+ ret = power_supply_register(NULL, &test_power_supplies[i]);
	128	+ if (ret) {
	129	+ pr_err("%s: failed to register %s\n", __func__,
	130	+ test_power_supplies[i].name);
	131	+ goto failed;
	132	+ }
	133	+ }
	134	+
	135	+ return 0;
	136	+failed:
	137	+ while (--i >= 0)
	138	+ power_supply_unregister(&test_power_supplies[i]);
	139	+ return ret;
	140	+}
	141	+module_init(test_power_init);
	142	+
	143	+static void __exit test_power_exit(void)
	144	+{
	145	+ int i;
	146	+
	147	+ /* Let's see how we handle changes... */
	148	+ test_power_ac_online = 0;
	149	+ test_power_battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
	150	+ for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
	151	+ power_supply_changed(&test_power_supplies[i]);
	152	+ pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n",
	153	+ __func__);
	154	+ ssleep(10);
	155	+
	156	+ for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
	157	+ power_supply_unregister(&test_power_supplies[i]);
	158	+}
	159	+module_exit(test_power_exit);
	160	+
	161	+MODULE_DESCRIPTION("Power supply driver for testing");
	162	+MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
	163	+MODULE_LICENSE("GPL");