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platform/x86: x86-android-tablets: Add battery swnode support
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power_supply_get_battery_info() which is used by charger and fuel-gauge
drivers on x86-android-tablets, expects the battery properties to be
described in a stand-alone battery fwnode which is then referenced
from both the charger and fuel-gauge device's fwnodes.

Add support for registering + unregistering a swnode for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220205191356.225505-1-hdegoede@redhat.com
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Hans de Goede committed Feb 11, 2022
1 parent d717e45 commit 5c8e4c8
Showing 1 changed file with 11 additions and 0 deletions.
11 changes: 11 additions & 0 deletions drivers/platform/x86/x86-android-tablets.c
Original file line number Diff line number Diff line change
Expand Up @@ -146,6 +146,7 @@ struct x86_serdev_info {
struct x86_dev_info {
char *invalid_aei_gpiochip;
const char * const *modules;
const struct software_node *bat_swnode;
struct gpiod_lookup_table * const *gpiod_lookup_tables;
const struct x86_i2c_client_info *i2c_client_info;
const struct platform_device_info *pdev_info;
Expand Down Expand Up @@ -727,6 +728,7 @@ static struct i2c_client **i2c_clients;
static struct platform_device **pdevs;
static struct serdev_device **serdevs;
static struct gpiod_lookup_table * const *gpiod_lookup_tables;
static const struct software_node *bat_swnode;
static void (*exit_handler)(void);

static __init int x86_instantiate_i2c_client(const struct x86_dev_info *dev_info,
Expand Down Expand Up @@ -850,6 +852,8 @@ static void x86_android_tablet_cleanup(void)

for (i = 0; gpiod_lookup_tables && gpiod_lookup_tables[i]; i++)
gpiod_remove_lookup_table(gpiod_lookup_tables[i]);

software_node_unregister(bat_swnode);
}

static __init int x86_android_tablet_init(void)
Expand Down Expand Up @@ -886,6 +890,13 @@ static __init int x86_android_tablet_init(void)
for (i = 0; dev_info->modules && dev_info->modules[i]; i++)
request_module(dev_info->modules[i]);

bat_swnode = dev_info->bat_swnode;
if (bat_swnode) {
ret = software_node_register(bat_swnode);
if (ret)
return ret;
}

gpiod_lookup_tables = dev_info->gpiod_lookup_tables;
for (i = 0; gpiod_lookup_tables && gpiod_lookup_tables[i]; i++)
gpiod_add_lookup_table(gpiod_lookup_tables[i]);
Expand Down

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