diff options
Diffstat (limited to 'drivers/platform/x86/samsung-laptop.c')
| -rw-r--r-- | drivers/platform/x86/samsung-laptop.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c index decde4c9a3d9..9d43a12db73c 100644 --- a/drivers/platform/x86/samsung-laptop.c +++ b/drivers/platform/x86/samsung-laptop.c @@ -16,6 +16,7 @@ #include <linux/leds.h> #include <linux/dmi.h> #include <linux/platform_device.h> +#include <linux/power_supply.h> #include <linux/rfkill.h> #include <linux/acpi.h> #include <linux/seq_file.h> @@ -23,6 +24,7 @@ #include <linux/ctype.h> #include <linux/efi.h> #include <linux/suspend.h> +#include <acpi/battery.h> #include <acpi/video.h> /* @@ -348,6 +350,8 @@ struct samsung_laptop { struct notifier_block pm_nb; + struct acpi_battery_hook battery_hook; + bool handle_backlight; bool has_stepping_quirk; @@ -697,6 +701,11 @@ static ssize_t set_performance_level(struct device *dev, static DEVICE_ATTR(performance_level, 0644, get_performance_level, set_performance_level); +static void show_battery_life_extender_deprecation_warning(struct device *dev) +{ + dev_warn_once(dev, "battery_life_extender attribute has been deprecated, see charge_types.\n"); +} + static int read_battery_life_extender(struct samsung_laptop *samsung) { const struct sabi_commands *commands = &samsung->config->commands; @@ -739,6 +748,8 @@ static ssize_t get_battery_life_extender(struct device *dev, struct samsung_laptop *samsung = dev_get_drvdata(dev); int ret; + show_battery_life_extender_deprecation_warning(dev); + ret = read_battery_life_extender(samsung); if (ret < 0) return ret; @@ -753,6 +764,8 @@ static ssize_t set_battery_life_extender(struct device *dev, struct samsung_laptop *samsung = dev_get_drvdata(dev); int ret, value; + show_battery_life_extender_deprecation_warning(dev); + if (!count || kstrtoint(buf, 0, &value) != 0) return -EINVAL; @@ -766,6 +779,84 @@ static ssize_t set_battery_life_extender(struct device *dev, static DEVICE_ATTR(battery_life_extender, 0644, get_battery_life_extender, set_battery_life_extender); +static int samsung_psy_ext_set_prop(struct power_supply *psy, + const struct power_supply_ext *ext, + void *ext_data, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct samsung_laptop *samsung = ext_data; + + switch (val->intval) { + case POWER_SUPPLY_CHARGE_TYPE_LONGLIFE: + return write_battery_life_extender(samsung, 1); + case POWER_SUPPLY_CHARGE_TYPE_STANDARD: + return write_battery_life_extender(samsung, 0); + default: + return -EINVAL; + } +} + +static int samsung_psy_ext_get_prop(struct power_supply *psy, + const struct power_supply_ext *ext, + void *ext_data, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct samsung_laptop *samsung = ext_data; + int ret; + + ret = read_battery_life_extender(samsung); + if (ret < 0) + return ret; + + if (ret == 1) + val->intval = POWER_SUPPLY_CHARGE_TYPE_LONGLIFE; + else + val->intval = POWER_SUPPLY_CHARGE_TYPE_STANDARD; + + return 0; +} + +static int samsung_psy_prop_is_writeable(struct power_supply *psy, + const struct power_supply_ext *ext, + void *data, + enum power_supply_property psp) +{ + return true; +} + +static const enum power_supply_property samsung_power_supply_props[] = { + POWER_SUPPLY_PROP_CHARGE_TYPES, +}; + +static const struct power_supply_ext samsung_battery_ext = { + .name = "samsung_laptop", + .properties = samsung_power_supply_props, + .num_properties = ARRAY_SIZE(samsung_power_supply_props), + .charge_types = (BIT(POWER_SUPPLY_CHARGE_TYPE_STANDARD) | + BIT(POWER_SUPPLY_CHARGE_TYPE_LONGLIFE)), + .get_property = samsung_psy_ext_get_prop, + .set_property = samsung_psy_ext_set_prop, + .property_is_writeable = samsung_psy_prop_is_writeable, +}; + +static int samsung_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook) +{ + struct samsung_laptop *samsung = container_of(hook, struct samsung_laptop, battery_hook); + + return power_supply_register_extension(battery, &samsung_battery_ext, + &samsung->platform_device->dev, samsung); +} + +static int samsung_battery_remove(struct power_supply *battery, + struct acpi_battery_hook *hook) +{ + power_supply_unregister_extension(battery, &samsung_battery_ext); + + return 0; +} + static int read_usb_charge(struct samsung_laptop *samsung) { const struct sabi_commands *commands = &samsung->config->commands; @@ -1043,6 +1134,21 @@ static int __init samsung_lid_handling_init(struct samsung_laptop *samsung) return retval; } +static int __init samsung_battery_hook_init(struct samsung_laptop *samsung) +{ + int retval = 0; + + if (samsung->config->commands.get_battery_life_extender != 0xFFFF) { + samsung->battery_hook.add_battery = samsung_battery_add; + samsung->battery_hook.remove_battery = samsung_battery_remove; + samsung->battery_hook.name = "Samsung Battery Extension"; + retval = devm_battery_hook_register(&samsung->platform_device->dev, + &samsung->battery_hook); + } + + return retval; +} + static int kbd_backlight_enable(struct samsung_laptop *samsung) { const struct sabi_commands *commands = &samsung->config->commands; @@ -1604,6 +1710,10 @@ static int __init samsung_init(void) if (ret) goto error_lid_handling; + ret = samsung_battery_hook_init(samsung); + if (ret) + goto error_lid_handling; + samsung_debugfs_init(samsung); samsung->pm_nb.notifier_call = samsung_pm_notification; |