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authorJonas Aaberg <jonas.aberg@stericsson.com>2012-02-27 14:02:44 +0400
committerLee Jones <lee.jones@linaro.org>2012-12-11 12:43:52 +0400
commitf6271b4fb1d5ce7d6cf2c84a96b56cca4ceca372 (patch)
treed191df216d4b443c6a8909b1dee2c72a7811a137 /drivers/power/ab8500_btemp.c
parente32ad07cea1f198db1cc6c2055dd8471b562a535 (diff)
downloadlinux-f6271b4fb1d5ce7d6cf2c84a96b56cca4ceca372.tar.xz
ab8500_btemp: Detect battery type in workqueue
Detect battery type in work queue instead of probe. This reduces the system boot time with 1.5s. Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Karl KOMIEROWSKI <karl.komierowski@stericsson.com>
Diffstat (limited to 'drivers/power/ab8500_btemp.c')
-rw-r--r--drivers/power/ab8500_btemp.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/power/ab8500_btemp.c b/drivers/power/ab8500_btemp.c
index 8135542ee746..5d1bf0bd6fa5 100644
--- a/drivers/power/ab8500_btemp.c
+++ b/drivers/power/ab8500_btemp.c
@@ -84,6 +84,7 @@ struct ab8500_btemp_ranges {
* @btemp_ranges: Battery temperature range structure
* @btemp_wq: Work queue for measuring the temperature periodically
* @btemp_periodic_work: Work for measuring the temperature periodically
+ * @initialized: True if battery id read.
*/
struct ab8500_btemp {
struct device *dev;
@@ -100,6 +101,7 @@ struct ab8500_btemp {
struct ab8500_btemp_ranges btemp_ranges;
struct workqueue_struct *btemp_wq;
struct delayed_work btemp_periodic_work;
+ bool initialized;
};
/* BTEMP power supply properties */
@@ -569,6 +571,13 @@ static void ab8500_btemp_periodic_work(struct work_struct *work)
struct ab8500_btemp *di = container_of(work,
struct ab8500_btemp, btemp_periodic_work.work);
+ if (!di->initialized) {
+ di->initialized = true;
+ /* Identify the battery */
+ if (ab8500_btemp_id(di) < 0)
+ dev_warn(di->dev, "failed to identify the battery\n");
+ }
+
di->bat_temp = ab8500_btemp_measure_temp(di);
if (di->bat_temp != di->prev_bat_temp) {
@@ -998,6 +1007,8 @@ static int __devinit ab8500_btemp_probe(struct platform_device *pdev)
di->parent = dev_get_drvdata(pdev->dev.parent);
di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+ di->initialized = false;
+
/* BTEMP supply */
di->btemp_psy.name = "ab8500_btemp";
di->btemp_psy.type = POWER_SUPPLY_TYPE_BATTERY;
@@ -1022,10 +1033,6 @@ static int __devinit ab8500_btemp_probe(struct platform_device *pdev)
INIT_DEFERRABLE_WORK(&di->btemp_periodic_work,
ab8500_btemp_periodic_work);
- /* Identify the battery */
- if (ab8500_btemp_id(di) < 0)
- dev_warn(di->dev, "failed to identify the battery\n");
-
/* Set BTEMP thermal limits. Low and Med are fixed */
di->btemp_ranges.btemp_low_limit = BTEMP_THERMAL_LOW_LIMIT;
di->btemp_ranges.btemp_med_limit = BTEMP_THERMAL_MED_LIMIT;