ACPI ac/battery/sbs: sysfs I/F always built in, procfs I/F disabled by default

ACPI AC/Battery/SBS driver has different kernel option for procfs and sysfs I/F.

This patch,
1. Change CONFIG_ACPI_PROCFS_POWER to 'n' by default so that we can remove it in the next release or two.
2. Remove CONFIG_ACPI_SYSFS_POWER and always build in the sysfs I/F of these drivers.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

4 files changed, 3 insertions, 68 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 88681aca88c..0f9de2b44c0 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -66,7 +66,6 @@ config ACPI_PROCFS
 config ACPI_PROCFS_POWER
         bool "Deprecated power /proc/acpi directories"
         depends on PROC_FS
-        default y
         help
           For backwards compatibility, this option allows
           deprecated power /proc/acpi/ directories to exist, even when
@@ -90,13 +89,6 @@ config ACPI_POWER_METER
           To compile this driver as a module, choose M here:
           the module will be called power-meter.
 
-config ACPI_SYSFS_POWER
-        bool "Future power /sys interface"
-        select POWER_SUPPLY
-        default y
-        help
-          Say N to disable power /sys interface
-
 config ACPI_EC_DEBUGFS
         tristate "EC read/write access through /sys/kernel/debug/ec"
         default n
@@ -136,6 +128,7 @@ config ACPI_PROC_EVENT
 config ACPI_AC
         tristate "AC Adapter"
         depends on X86
+        select POWER_SUPPLY
         default y
         help
           This driver supports the AC Adapter object, which indicates
@@ -148,6 +141,7 @@ config ACPI_AC
 config ACPI_BATTERY
         tristate "Battery"
         depends on X86
+        select POWER_SUPPLY
         default y
         help
           This driver adds support for battery information through
@@ -364,6 +358,7 @@ config ACPI_HOTPLUG_MEMORY
 config ACPI_SBS
         tristate "Smart Battery System"
         depends on X86
+        select POWER_SUPPLY
         help
           This driver supports the Smart Battery System, another
           type of access to battery information, found on some laptops.
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 56205a0b85d..ba9afeaa23a 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -32,9 +32,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #endif
-#ifdef CONFIG_ACPI_SYSFS_POWER
 #include <linux/power_supply.h>
-#endif
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 
@@ -86,9 +84,7 @@ static struct acpi_driver acpi_ac_driver = {
 };
 
 struct acpi_ac {
-#ifdef CONFIG_ACPI_SYSFS_POWER
         struct power_supply charger;
-#endif
         struct acpi_device * device;
         unsigned long long state;
 };
@@ -104,7 +100,6 @@ static const struct file_operations acpi_ac_fops = {
         .release = single_release,
 };
 #endif
-#ifdef CONFIG_ACPI_SYSFS_POWER
 static int get_ac_property(struct power_supply *psy,
                            enum power_supply_property psp,
                            union power_supply_propval *val)
@@ -123,7 +118,6 @@ static int get_ac_property(struct power_supply *psy,
 static enum power_supply_property ac_props[] = {
         POWER_SUPPLY_PROP_ONLINE,
 };
-#endif
 /* --------------------------------------------------------------------------
                                AC Adapter Management
    -------------------------------------------------------------------------- */
@@ -247,9 +241,7 @@ static void acpi_ac_notify(struct acpi_device *device, u32 event)
                                                   dev_name(&device->dev), event,
                                                   (u32) ac->state);
                 acpi_notifier_call_chain(device, event, (u32) ac->state);
-#ifdef CONFIG_ACPI_SYSFS_POWER
                 kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
-#endif
         }
 
         return;
@@ -282,14 +274,12 @@ static int acpi_ac_add(struct acpi_device *device)
 #endif
         if (result)
                 goto end;
-#ifdef CONFIG_ACPI_SYSFS_POWER
         ac->charger.name = acpi_device_bid(device);
         ac->charger.type = POWER_SUPPLY_TYPE_MAINS;
         ac->charger.properties = ac_props;
         ac->charger.num_properties = ARRAY_SIZE(ac_props);
         ac->charger.get_property = get_ac_property;
         power_supply_register(&ac->device->dev, &ac->charger);
-#endif
 
         printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
                acpi_device_name(device), acpi_device_bid(device),
@@ -316,10 +306,8 @@ static int acpi_ac_resume(struct acpi_device *device)
         old_state = ac->state;
         if (acpi_ac_get_state(ac))
                 return 0;
-#ifdef CONFIG_ACPI_SYSFS_POWER
         if (old_state != ac->state)
                 kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
-#endif
         return 0;
 }
 
@@ -333,10 +321,8 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
 
         ac = acpi_driver_data(device);
 
-#ifdef CONFIG_ACPI_SYSFS_POWER
         if (ac->charger.dev)
                 power_supply_unregister(&ac->charger);
-#endif
 #ifdef CONFIG_ACPI_PROCFS_POWER
         acpi_ac_remove_fs(device);
 #endif
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 98417201e9c..7b8787b490f 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -42,10 +42,7 @@
 
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
-
-#ifdef CONFIG_ACPI_SYSFS_POWER
 #include <linux/power_supply.h>
-#endif
 
 #define PREFIX "ACPI: "
 
@@ -102,9 +99,7 @@ enum {
 
 struct acpi_battery {
         struct mutex lock;
-#ifdef CONFIG_ACPI_SYSFS_POWER
         struct power_supply bat;
-#endif
         struct acpi_device *device;
         unsigned long update_time;
         int rate_now;
@@ -141,7 +136,6 @@ inline int acpi_battery_present(struct acpi_battery *battery)
         return battery->device->status.battery_present;
 }
 
-#ifdef CONFIG_ACPI_SYSFS_POWER
 static int acpi_battery_technology(struct acpi_battery *battery)
 {
         if (!strcasecmp("NiCd", battery->type))
@@ -281,7 +275,6 @@ static enum power_supply_property energy_battery_props[] = {
         POWER_SUPPLY_PROP_MANUFACTURER,
         POWER_SUPPLY_PROP_SERIAL_NUMBER,
 };
-#endif
 
 #ifdef CONFIG_ACPI_PROCFS_POWER
 inline char *acpi_battery_units(struct acpi_battery *battery)
@@ -492,7 +485,6 @@ static int acpi_battery_init_alarm(struct acpi_battery *battery)
         return acpi_battery_set_alarm(battery);
 }
 
-#ifdef CONFIG_ACPI_SYSFS_POWER
 static ssize_t acpi_battery_alarm_show(struct device *dev,
                                         struct device_attribute *attr,
                                         char *buf)
@@ -552,7 +544,6 @@ static void sysfs_remove_battery(struct acpi_battery *battery)
         power_supply_unregister(&battery->bat);
         battery->bat.dev = NULL;
 }
-#endif
 
 static void acpi_battery_quirks(struct acpi_battery *battery)
 {
@@ -568,9 +559,7 @@ static int acpi_battery_update(struct acpi_battery *battery)
         if (result)
                 return result;
         if (!acpi_battery_present(battery)) {
-#ifdef CONFIG_ACPI_SYSFS_POWER
                 sysfs_remove_battery(battery);
-#endif
                 battery->update_time = 0;
                 return 0;
         }
@@ -582,10 +571,8 @@ static int acpi_battery_update(struct acpi_battery *battery)
                 acpi_battery_quirks(battery);
                 acpi_battery_init_alarm(battery);
         }
-#ifdef CONFIG_ACPI_SYSFS_POWER
         if (!battery->bat.dev)
                 sysfs_add_battery(battery);
-#endif
         return acpi_battery_get_state(battery);
 }
 
@@ -867,26 +854,20 @@ static void acpi_battery_remove_fs(struct acpi_device *device)
 static void acpi_battery_notify(struct acpi_device *device, u32 event)
 {
         struct acpi_battery *battery = acpi_driver_data(device);
-#ifdef CONFIG_ACPI_SYSFS_POWER
         struct device *old;
-#endif
 
         if (!battery)
                 return;
-#ifdef CONFIG_ACPI_SYSFS_POWER
         old = battery->bat.dev;
-#endif
         acpi_battery_update(battery);
         acpi_bus_generate_proc_event(device, event,
                                      acpi_battery_present(battery));
         acpi_bus_generate_netlink_event(device->pnp.device_class,
                                         dev_name(&device->dev), event,
                                         acpi_battery_present(battery));
-#ifdef CONFIG_ACPI_SYSFS_POWER
         /* acpi_battery_update could remove power_supply object */
         if (old && battery->bat.dev)
                 power_supply_changed(&battery->bat);
-#endif
 }
 
 static int acpi_battery_add(struct acpi_device *device)
@@ -934,9 +915,7 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
 #ifdef CONFIG_ACPI_PROCFS_POWER
         acpi_battery_remove_fs(device);
 #endif
-#ifdef CONFIG_ACPI_SYSFS_POWER
         sysfs_remove_battery(battery);
-#endif
         mutex_destroy(&battery->lock);
         kfree(battery);
         return 0;
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index 4ff76e8174e..e5dbedb16bb 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -40,10 +40,7 @@
 #include <linux/timer.h>
 #include <linux/jiffies.h>
 #include <linux/delay.h>
-
-#ifdef CONFIG_ACPI_SYSFS_POWER
 #include <linux/power_supply.h>
-#endif
 
 #include "sbshc.h"
 
@@ -85,9 +82,7 @@ static const struct acpi_device_id sbs_device_ids[] = {
 MODULE_DEVICE_TABLE(acpi, sbs_device_ids);
 
 struct acpi_battery {
-#ifdef CONFIG_ACPI_SYSFS_POWER
         struct power_supply bat;
-#endif
         struct acpi_sbs *sbs;
 #ifdef CONFIG_ACPI_PROCFS_POWER
         struct proc_dir_entry *proc_entry;
@@ -120,9 +115,7 @@ struct acpi_battery {
 #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
 
 struct acpi_sbs {
-#ifdef CONFIG_ACPI_SYSFS_POWER
         struct power_supply charger;
-#endif
         struct acpi_device *device;
         struct acpi_smb_hc *hc;
         struct mutex lock;
@@ -166,7 +159,6 @@ static inline int acpi_battery_scale(struct acpi_battery *battery)
             acpi_battery_ipscale(battery);
 }
 
-#ifdef CONFIG_ACPI_SYSFS_POWER
 static int sbs_get_ac_property(struct power_supply *psy,
                                enum power_supply_property psp,
                                union power_supply_propval *val)
@@ -313,7 +305,6 @@ static enum power_supply_property sbs_energy_battery_props[] = {
         POWER_SUPPLY_PROP_MANUFACTURER,
 };
 
-#endif
 
 /* --------------------------------------------------------------------------
                             Smart Battery System Management
@@ -449,7 +440,6 @@ static int acpi_ac_get_present(struct acpi_sbs *sbs)
         return result;
 }
 
-#ifdef CONFIG_ACPI_SYSFS_POWER
 static ssize_t acpi_battery_alarm_show(struct device *dev,
                                         struct device_attribute *attr,
                                         char *buf)
@@ -479,7 +469,6 @@ static struct device_attribute alarm_attr = {
         .show = acpi_battery_alarm_show,
         .store = acpi_battery_alarm_store,
 };
-#endif
 
 /* --------------------------------------------------------------------------
                               FS Interface (/proc/acpi)
@@ -798,7 +787,6 @@ static int acpi_battery_add(struct acpi_sbs *sbs, int id)
                         &acpi_battery_state_fops, &acpi_battery_alarm_fops,
                         battery);
 #endif
-#ifdef CONFIG_ACPI_SYSFS_POWER
         battery->bat.name = battery->name;
         battery->bat.type = POWER_SUPPLY_TYPE_BATTERY;
         if (!acpi_battery_mode(battery)) {
@@ -819,7 +807,6 @@ static int acpi_battery_add(struct acpi_sbs *sbs, int id)
                 goto end;
         battery->have_sysfs_alarm = 1;
       end:
-#endif
         printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
                ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
                battery->name, battery->present ? "present" : "absent");
@@ -828,17 +815,13 @@ static int acpi_battery_add(struct acpi_sbs *sbs, int id)
 
 static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
 {
-#if defined(CONFIG_ACPI_SYSFS_POWER) || defined(CONFIG_ACPI_PROCFS_POWER)
         struct acpi_battery *battery = &sbs->battery[id];
-#endif
 
-#ifdef CONFIG_ACPI_SYSFS_POWER
         if (battery->bat.dev) {
                 if (battery->have_sysfs_alarm)
                         device_remove_file(battery->bat.dev, &alarm_attr);
                 power_supply_unregister(&battery->bat);
         }
-#endif
 #ifdef CONFIG_ACPI_PROCFS_POWER
         if (battery->proc_entry)
                 acpi_sbs_remove_fs(&battery->proc_entry, acpi_battery_dir);
@@ -859,14 +842,12 @@ static int acpi_charger_add(struct acpi_sbs *sbs)
         if (result)
                 goto end;
 #endif
-#ifdef CONFIG_ACPI_SYSFS_POWER
         sbs->charger.name = "sbs-charger";
         sbs->charger.type = POWER_SUPPLY_TYPE_MAINS;
         sbs->charger.properties = sbs_ac_props;
         sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props);
         sbs->charger.get_property = sbs_get_ac_property;
         power_supply_register(&sbs->device->dev, &sbs->charger);
-#endif
         printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n",
                ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
                ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line");
@@ -876,10 +857,8 @@ static int acpi_charger_add(struct acpi_sbs *sbs)
 
 static void acpi_charger_remove(struct acpi_sbs *sbs)
 {
-#ifdef CONFIG_ACPI_SYSFS_POWER
         if (sbs->charger.dev)
                 power_supply_unregister(&sbs->charger);
-#endif
 #ifdef CONFIG_ACPI_PROCFS_POWER
         if (sbs->charger_entry)
                 acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir);
@@ -900,9 +879,7 @@ static void acpi_sbs_callback(void *context)
                                               ACPI_SBS_NOTIFY_STATUS,
                                               sbs->charger_present);
 #endif
-#ifdef CONFIG_ACPI_SYSFS_POWER
                 kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE);
-#endif
         }
         if (sbs->manager_present) {
                 for (id = 0; id < MAX_SBS_BAT; ++id) {
@@ -919,9 +896,7 @@ static void acpi_sbs_callback(void *context)
                                                       ACPI_SBS_NOTIFY_STATUS,
                                                       bat->present);
 #endif
-#ifdef CONFIG_ACPI_SYSFS_POWER
                         kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE);
-#endif
                 }
         }
 }