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Commit a12810ab authored by Rajanikanth H.V's avatar Rajanikanth H.V Committed by Anton Vorontsov
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ab8500: Add devicetree support for chargalg 



This patch adds device tree support for charging algorithm driver

Signed-off-by: default avatarRajanikanth H.V <rajanikanth.hv@stericsson.com>
Signed-off-by: default avatarAnton Vorontsov <anton.vorontsov@linaro.org>
parent 4aef72db

Documentation/devicetree/bindings/power_supply/ab8500/chargalg.txt

0 → 100644
+16 −0
Original line number Diff line number Diff line 
=== AB8500 Charging Algorithm Driver ===



The properties below describes the node for chargalg driver.



Required Properties:

- compatible = Shall be: "stericsson,ab8500-chargalg"

- battery = Shall be battery specific information



Example:

ab8500_chargalg {

	compatible = "stericsson,ab8500-chargalg";

	battery	   = <&ab8500_battery>;

};



For information on battery specific node, Ref:

Documentation/devicetree/bindings/power_supply/ab8500/fg.txt

arch/arm/boot/dts/dbx5x0.dtsi

+5 −0
Original line number Diff line number Diff line
@@ -373,6 +373,11 @@ 
					vddadc-supply	= <&ab8500_ldo_tvout_reg>;

				};



				ab8500_chargalg {

					compatible	= "stericsson,ab8500-chargalg";

					battery		= <&ab8500_battery>;

				};



				ab8500_usb {

					compatible = "stericsson,ab8500-usb";

					interrupts = < 90 0x4

drivers/mfd/ab8500-core.c

+5 −0
Original line number Diff line number Diff line
@@ -1071,8 +1071,13 @@ static struct mfd_cell __devinitdata ab8500_bm_devs[] = { 
	},

	{

		.name = "ab8500-chargalg",

		.of_compatible = "stericsson,ab8500-chargalg",

		.num_resources = ARRAY_SIZE(ab8500_chargalg_resources),

		.resources = ab8500_chargalg_resources,

#ifndef CONFIG_OF

		.platform_data = &ab8500_bm_data,

		.pdata_size = sizeof(ab8500_bm_data),

#endif

	},

};

drivers/power/abx500_chargalg.c

+38 −16
Original line number Diff line number Diff line
@@ -21,6 +21,8 @@ 
#include <linux/completion.h>

#include <linux/workqueue.h>

#include <linux/kobject.h>

#include <linux/of.h>

#include <linux/mfd/core.h>

#include <linux/mfd/abx500.h>

#include <linux/mfd/abx500/ux500_chargalg.h>

#include <linux/mfd/abx500/ab8500-bm.h>
@@ -205,7 +207,6 @@ enum maxim_ret { 
 * @chg_info:		information about connected charger types

 * @batt_data:		data of the battery

 * @susp_status:	current charger suspension status

 * @pdata:		pointer to the abx500_chargalg platform data

 * @bat:		pointer to the abx500_bm platform data

 * @chargalg_psy:	structure that holds the battery properties exposed by

 *			the charging algorithm
@@ -231,7 +232,6 @@ struct abx500_chargalg { 
	struct abx500_chargalg_charger_info chg_info;

	struct abx500_chargalg_battery_data batt_data;

	struct abx500_chargalg_suspension_status susp_status;

	struct abx500_bmdevs_plat_data *pdata;

	struct abx500_bm_data *bat;

	struct power_supply chargalg_psy;

	struct ux500_charger *ac_chg;
@@ -1795,25 +1795,44 @@ static int __devexit abx500_chargalg_remove(struct platform_device *pdev) 
	flush_scheduled_work();

	power_supply_unregister(&di->chargalg_psy);

	platform_set_drvdata(pdev, NULL);

	kfree(di);



	return 0;

}



static char *supply_interface[] = {

	"ab8500_fg",

};



static int __devinit abx500_chargalg_probe(struct platform_device *pdev)

{

	struct abx500_bmdevs_plat_data *plat_data;

	struct device_node *np = pdev->dev.of_node;

	struct abx500_chargalg *di;

	int ret = 0;



	struct abx500_chargalg *di =

		kzalloc(sizeof(struct abx500_chargalg), GFP_KERNEL);

	if (!di)

	di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);

	if (!di) {

		dev_err(&pdev->dev, "%s no mem for ab8500_chargalg\n", __func__);

		return -ENOMEM;

	}

	di->bat = pdev->mfd_cell->platform_data;

	if (!di->bat) {

		if (np) {

			ret = bmdevs_of_probe(&pdev->dev, np, &di->bat);

			if (ret) {

				dev_err(&pdev->dev,

					"failed to get battery information\n");

				return ret;

			}

		} else {

			dev_err(&pdev->dev, "missing dt node for ab8500_chargalg\n");

			return -EINVAL;

		}

	} else {

		dev_info(&pdev->dev, "falling back to legacy platform data\n");

	}



	/* get device struct */

	di->dev = &pdev->dev;

	plat_data = pdev->dev.platform_data;

	di->pdata = plat_data;



	/* chargalg supply */

	di->chargalg_psy.name = "abx500_chargalg";
@@ -1821,8 +1840,8 @@ static int __devinit abx500_chargalg_probe(struct platform_device *pdev) 
	di->chargalg_psy.properties = abx500_chargalg_props;

	di->chargalg_psy.num_properties = ARRAY_SIZE(abx500_chargalg_props);

	di->chargalg_psy.get_property = abx500_chargalg_get_property;

	di->chargalg_psy.supplied_to = di->pdata->supplied_to;

	di->chargalg_psy.num_supplicants = di->pdata->num_supplicants;

	di->chargalg_psy.supplied_to = supply_interface;

	di->chargalg_psy.num_supplicants = ARRAY_SIZE(supply_interface),

	di->chargalg_psy.external_power_changed =

		abx500_chargalg_external_power_changed;
@@ -1842,7 +1861,7 @@ static int __devinit abx500_chargalg_probe(struct platform_device *pdev) 
		create_singlethread_workqueue("abx500_chargalg_wq");

	if (di->chargalg_wq == NULL) {

		dev_err(di->dev, "failed to create work queue\n");

		goto free_device_info;

		return -ENOMEM;

	}



	/* Init work for chargalg */
@@ -1883,20 +1902,23 @@ static int __devinit abx500_chargalg_probe(struct platform_device *pdev) 
	power_supply_unregister(&di->chargalg_psy);

free_chargalg_wq:

	destroy_workqueue(di->chargalg_wq);

free_device_info:

	kfree(di);



	return ret;

}



static const struct of_device_id ab8500_chargalg_match[] = {

	{ .compatible = "stericsson,ab8500-chargalg", },

	{ },

};



static struct platform_driver abx500_chargalg_driver = {

	.probe = abx500_chargalg_probe,

	.remove = __devexit_p(abx500_chargalg_remove),

	.suspend = abx500_chargalg_suspend,

	.resume = abx500_chargalg_resume,

	.driver = {

		.name = "abx500-chargalg",

		.name = "ab8500-chargalg",

		.owner = THIS_MODULE,

		.of_match_table = ab8500_chargalg_match,

	},

};

include/linux/mfd/abx500.h

+0 −6
Original line number Diff line number Diff line
@@ -274,12 +274,6 @@ struct abx500_bm_data { 


extern struct abx500_bm_data ab8500_bm_data;



struct abx500_bmdevs_plat_data {

	char	**supplied_to;

	size_t	num_supplicants;

	bool	autopower_cfg;

};



enum {

	NTC_EXTERNAL = 0,

	NTC_INTERNAL,