diff options
| author | Johan Palsson <johan.palsson@stericsson.com> | 2011-08-25 12:27:06 +0530 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@stericsson.com> | 2011-09-19 16:00:09 +0200 |
| commit | 83177878674c623a2aefb37c1ceb10ea48116e41 (patch) | |
| tree | 68659ba413c93d3f99dff2e3ec2b3d2e1aec0148 /drivers/power | |
| parent | 9b336751fe35a39d1ad67654027c78839c75e21a (diff) | |
hwmon: ab8500: Add support to monitor battery temp
ST-Ericsson ID: CR339643
ST-Ericsson Linux next: ER282986
ST-Ericsson FOSS-OUT ID: Trivial
Change-Id: Ib6ad58e7a702fe976a1d66fef0ce9d1782a1f8d2
Signed-off-by: Huan DUAN <huan.duan@stericsson.com>
Signed-off-by: Johan Palsson <johan.palsson@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/25108
Reviewed-by: QATEST
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/ab8500_btemp.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/power/ab8500_btemp.c b/drivers/power/ab8500_btemp.c index b8053d577ab..336384c882f 100644 --- a/drivers/power/ab8500_btemp.c +++ b/drivers/power/ab8500_btemp.c @@ -67,6 +67,7 @@ struct ab8500_btemp_ranges { /** * struct ab8500_btemp - ab8500 BTEMP device information * @dev: Pointer to the structure device + * @node: List of AB8500 BTEMPs, hence prepared for reentrance * @chip_id: Chip-Id of the AB8500 * @curr_source: What current source we use, in uA * @bat_temp: Battery temperature in degree Celcius @@ -83,6 +84,7 @@ struct ab8500_btemp_ranges { */ struct ab8500_btemp { struct device *dev; + struct list_head node; u8 chip_id; int curr_source; int bat_temp; @@ -106,6 +108,20 @@ static enum power_supply_property ab8500_btemp_props[] = { POWER_SUPPLY_PROP_TEMP, }; +static LIST_HEAD(ab8500_btemp_list); + +/** + * ab8500_btemp_get() - returns a reference to the primary AB8500 BTEMP + * (i.e. the first BTEMP in the instance list) + */ +struct ab8500_btemp *ab8500_btemp_get(void) +{ + struct ab8500_btemp *btemp; + btemp = list_first_entry(&ab8500_btemp_list, struct ab8500_btemp, node); + + return btemp; +} + /** * ab8500_btemp_batctrl_volt_to_res() - convert batctrl voltage to resistance * @di: pointer to the ab8500_btemp structure @@ -723,6 +739,17 @@ static int ab8500_btemp_get_temp(struct ab8500_btemp *di) } /** + * ab8500_btemp_get_batctrl_temp() - get the temperature + * @btemp: pointer to the btemp structure + * + * Returns the batctrl temperature in millidegrees + */ +int ab8500_btemp_get_batctrl_temp(struct ab8500_btemp *btemp) +{ + return btemp->bat_temp * 1000; +} + +/** * ab8500_btemp_get_property() - get the btemp properties * @psy: pointer to the power_supply structure * @psp: pointer to the power_supply_property structure @@ -1032,6 +1059,7 @@ static int __devinit ab8500_btemp_probe(struct platform_device *pdev) /* Kick off periodic temperature measurements */ ab8500_btemp_periodic(di, true); + list_add_tail(&di->node, &ab8500_btemp_list); return ret; |