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Subject[PATCH RESEND 1/2] olpc_battery: bind to device tree
Date
This is cleaner, and allows suspend/resume (wakeup) handlers to be
added in an upcoming patch.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Andres Salomon <dilinger@queued.net>
---
.../bindings/power_supply/olpc_battery.txt | 5 ++
drivers/power/olpc_battery.c | 55 ++++++++++++--------
2 files changed, 39 insertions(+), 21 deletions(-)
create mode 100644 Documentation/devicetree/bindings/power_supply/olpc_battery.txt
diff --git a/Documentation/devicetree/bindings/power_supply/olpc_battery.txt b/Documentation/devicetree/bindings/power_supply/olpc_battery.txt
new file mode 100644
index 0000000..c8901b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/power_supply/olpc_battery.txt
@@ -0,0 +1,5 @@
+OLPC battery
+~~~~~~~~~~~~
+
+Required properties:
+ - compatible : "olpc,xo1-battery"
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c
index 0b0ff3a..9972268 100644
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -519,9 +519,8 @@ static struct device_attribute olpc_bat_error = {
* Initialisation
*********************************************************************/

-static struct platform_device *bat_pdev;
-
static struct power_supply olpc_bat = {
+ .name = "olpc-battery",
.get_property = olpc_bat_get_property,
.use_for_apm = 1,
};
@@ -534,14 +533,11 @@ void olpc_battery_trigger_uevent(unsigned long cause)
kobject_uevent(&olpc_bat.dev->kobj, KOBJ_CHANGE);
}

-static int __init olpc_bat_init(void)
+static int __devinit olpc_battery_probe(struct platform_device *pdev)
{
- int ret = 0;
+ int ret;
uint8_t status;

- if (!olpc_platform_info.ecver)
- return -ENXIO;
-
/*
* We've seen a number of EC protocol changes; this driver requires
* the latest EC protocol, supported by 0x44 and above.
@@ -558,15 +554,10 @@ static int __init olpc_bat_init(void)

/* Ignore the status. It doesn't actually matter */

- bat_pdev = platform_device_register_simple("olpc-battery", 0, NULL, 0);
- if (IS_ERR(bat_pdev))
- return PTR_ERR(bat_pdev);
-
- ret = power_supply_register(&bat_pdev->dev, &olpc_ac);
+ ret = power_supply_register(&pdev->dev, &olpc_ac);
if (ret)
- goto ac_failed;
+ return ret;

- olpc_bat.name = bat_pdev->name;
if (olpc_board_at_least(olpc_board_pre(0xd0))) { /* XO-1.5 */
olpc_bat.properties = olpc_xo15_bat_props;
olpc_bat.num_properties = ARRAY_SIZE(olpc_xo15_bat_props);
@@ -575,7 +566,7 @@ static int __init olpc_bat_init(void)
olpc_bat.num_properties = ARRAY_SIZE(olpc_xo1_bat_props);
}

- ret = power_supply_register(&bat_pdev->dev, &olpc_bat);
+ ret = power_supply_register(&pdev->dev, &olpc_bat);
if (ret)
goto battery_failed;

@@ -587,7 +578,7 @@ static int __init olpc_bat_init(void)
if (ret)
goto error_failed;

- goto success;
+ return 0;

error_failed:
device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
@@ -595,22 +586,44 @@ eeprom_failed:
power_supply_unregister(&olpc_bat);
battery_failed:
power_supply_unregister(&olpc_ac);
-ac_failed:
- platform_device_unregister(bat_pdev);
-success:
return ret;
}

-static void __exit olpc_bat_exit(void)
+static int __devexit olpc_battery_remove(struct platform_device *pdev)
{
device_remove_file(olpc_bat.dev, &olpc_bat_error);
device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
power_supply_unregister(&olpc_bat);
power_supply_unregister(&olpc_ac);
- platform_device_unregister(bat_pdev);
+ return 0;
}

+static const struct of_device_id olpc_battery_ids[] __devinitconst = {
+ { .compatible = "olpc,xo1-battery" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, olpc_battery_ids);
+
+static struct platform_driver olpc_battery_drv = {
+ .driver = {
+ .name = "olpc-battery",
+ .owner = THIS_MODULE,
+ .of_match_table = olpc_battery_ids,
+ },
+ .probe = olpc_battery_probe,
+ .remove = __devexit_p(olpc_battery_remove),
+};
+
+static int __init olpc_bat_init(void)
+{
+ return platform_driver_register(&olpc_battery_drv);
+}
module_init(olpc_bat_init);
+
+static void __exit olpc_bat_exit(void)
+{
+ platform_driver_unregister(&olpc_battery_drv);
+}
module_exit(olpc_bat_exit);

MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
--
1.7.6


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