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ab8500: Add devicetree support for btemp

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This patch adds device tree support for battery-temperature-monitor driver

Signed-off-by: Rajanikanth H.V <rajanikanth.hv@stericsson.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
This commit is contained in:
Rajanikanth H.V
2012-11-18 19:16:58 -08:00
committed by Anton Vorontsov
parent e0f1abeba5
commit bd9e8ab2d5
7 changed files with 73 additions and 36 deletions
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67
drivers/power/ab8500_btemp.c
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@@ -20,11 +20,13 @@
#include <linux/power_supply.h>
#include <linux/completion.h>
#include <linux/workqueue.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/jiffies.h>
#include <linux/of.h>
#include <linux/mfd/core.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
#include <linux/mfd/abx500/ab8500-gpadc.h>
#include <linux/jiffies.h>
#define VTVOUT_V 1800
@@ -76,7 +78,6 @@ struct ab8500_btemp_ranges {
* @parent: Pointer to the struct ab8500
* @gpadc: Pointer to the struct gpadc
* @fg: Pointer to the struct fg
* @pdata: Pointer to the abx500_btemp platform data
* @bat: Pointer to the abx500_bm platform data
* @btemp_psy: Structure for BTEMP specific battery properties
* @events: Structure for information about events triggered
@@ -93,7 +94,6 @@ struct ab8500_btemp {
struct ab8500 *parent;
struct ab8500_gpadc *gpadc;
struct ab8500_fg *fg;
struct abx500_bmdevs_plat_data *pdata;
struct abx500_bm_data *bat;
struct power_supply btemp_psy;
struct ab8500_btemp_events events;
@@ -955,48 +955,57 @@ static int __devexit ab8500_btemp_remove(struct platform_device *pdev)
flush_scheduled_work();
power_supply_unregister(&di->btemp_psy);
platform_set_drvdata(pdev, NULL);
kfree(di);
return 0;
}
static char *supply_interface[] = {
"ab8500_chargalg",
"ab8500_fg",
};
static int __devinit ab8500_btemp_probe(struct platform_device *pdev)
{
struct abx500_bmdevs_plat_data *plat_data = pdev->dev.platform_data;
struct device_node *np = pdev->dev.of_node;
struct ab8500_btemp *di;
int irq, i, ret = 0;
u8 val;
if (!plat_data) {
dev_err(&pdev->dev, "No platform data\n");
return -EINVAL;
}
di = kzalloc(sizeof(*di), GFP_KERNEL);
if (!di)
di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
if (!di) {
dev_err(&pdev->dev, "%s no mem for ab8500_btemp\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_btemp\n");
return -EINVAL;
}
} else {
dev_info(&pdev->dev, "falling back to legacy platform data\n");
}
/* get parent data */
di->dev = &pdev->dev;
di->parent = dev_get_drvdata(pdev->dev.parent);
di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
/* get btemp specific platform data */
di->pdata = plat_data;
if (!di->pdata) {
dev_err(di->dev, "no btemp platform data supplied\n");
ret = -EINVAL;
goto free_device_info;
}
/* BTEMP supply */
di->btemp_psy.name = "ab8500_btemp";
di->btemp_psy.type = POWER_SUPPLY_TYPE_BATTERY;
di->btemp_psy.properties = ab8500_btemp_props;
di->btemp_psy.num_properties = ARRAY_SIZE(ab8500_btemp_props);
di->btemp_psy.get_property = ab8500_btemp_get_property;
di->btemp_psy.supplied_to = di->pdata->supplied_to;
di->btemp_psy.num_supplicants = di->pdata->num_supplicants;
di->btemp_psy.supplied_to = supply_interface;
di->btemp_psy.num_supplicants = ARRAY_SIZE(supply_interface);
di->btemp_psy.external_power_changed =
ab8500_btemp_external_power_changed;
@@ -1006,8 +1015,7 @@ static int __devinit ab8500_btemp_probe(struct platform_device *pdev)
create_singlethread_workqueue("ab8500_btemp_wq");
if (di->btemp_wq == NULL) {
dev_err(di->dev, "failed to create work queue\n");
ret = -ENOMEM;
goto free_device_info;
return -ENOMEM;
}
/* Init work for measuring temperature periodically */
@@ -1085,12 +1093,14 @@ free_irq:
}
free_btemp_wq:
destroy_workqueue(di->btemp_wq);
free_device_info:
kfree(di);
return ret;
}
static const struct of_device_id ab8500_btemp_match[] = {
{ .compatible = "stericsson,ab8500-btemp", },
{ },
};
static struct platform_driver ab8500_btemp_driver = {
.probe = ab8500_btemp_probe,
.remove = __devexit_p(ab8500_btemp_remove),
@@ -1099,6 +1109,7 @@ static struct platform_driver ab8500_btemp_driver = {
.driver = {
.name = "ab8500-btemp",
.owner = THIS_MODULE,
.of_match_table = ab8500_btemp_match,
},
};