power_supply: Move run-time configuration to separate structure

Add new structure 'power_supply_config' for holding run-time
initialization data like of_node, supplies and private driver data.

The power_supply_register() function is changed so all power supply
drivers need updating.

When registering the power supply this new 'power_supply_config' should be
used instead of directly initializing 'struct power_supply'. This allows
changing the ownership of power_supply structure from driver to the
power supply core in next patches.

When a driver does not use of_node or supplies then it should use NULL
as config. If driver uses of_node or supplies then it should allocate
config on stack and initialize it with proper values.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Pavel Machek <pavel@ucw.cz>

[for the nvec part]
Reviewed-by: Marc Dietrich <marvin24@gmx.de>

[for drivers/platform/x86/compal-laptop.c]
Reviewed-by: Darren Hart <dvhart@linux.intel.com>

[for drivers/hid/*]
Reviewed-by: Jiri Kosina <jkosina@suse.cz>

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

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/power/gpio-charger.c b/drivers/power/gpio-charger.c
index b7424c8501f1..47a9e2bd94d9 100644
--- a/drivers/power/gpio-charger.c
+++ b/drivers/power/gpio-charger.c
@@ -127,6 +127,7 @@ struct gpio_charger_platform_data *gpio_charger_parse_dt(struct device *dev)
 static int gpio_charger_probe(struct platform_device *pdev)
 {
         const struct gpio_charger_platform_data *pdata = pdev->dev.platform_data;
+        struct power_supply_config psy_cfg = {};
         struct gpio_charger *gpio_charger;
         struct power_supply *charger;
         int ret;
@@ -161,9 +162,10 @@ static int gpio_charger_probe(struct platform_device *pdev)
         charger->properties = gpio_charger_properties;
         charger->num_properties = ARRAY_SIZE(gpio_charger_properties);
         charger->get_property = gpio_charger_get_property;
-        charger->supplied_to = pdata->supplied_to;
-        charger->num_supplicants = pdata->num_supplicants;
-        charger->of_node = pdev->dev.of_node;
+
+        psy_cfg.supplied_to = pdata->supplied_to;
+        psy_cfg.num_supplicants = pdata->num_supplicants;
+        psy_cfg.of_node = pdev->dev.of_node;
 
         ret = gpio_request(pdata->gpio, dev_name(&pdev->dev));
         if (ret) {
@@ -178,7 +180,7 @@ static int gpio_charger_probe(struct platform_device *pdev)
 
         gpio_charger->pdata = pdata;
 
-        ret = power_supply_register(&pdev->dev, charger);
+        ret = power_supply_register(&pdev->dev, charger, &psy_cfg);
         if (ret < 0) {
                 dev_err(&pdev->dev, "Failed to register power supply: %d\n",
                         ret);