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authorRhyland Klein <rklein@nvidia.com>2011-05-24 12:05:59 -0700
committerAnton Vorontsov <cbouatmailru@gmail.com>2011-07-08 16:53:07 +0400
commit58ddafae2d7102d8f493840cb7aca0b4b2326b2a (patch)
tree33490b6266c2e9367bcf3549860aae7ee18ed857 /include/linux/power
parent906649de0eacde7a643b5a0750de6207441ad54f (diff)
bq20z75: Add support for external notification
Adding support for external power change notification. One problem found is that there is a lag time before the sensor will return a new status. To ensure that we only fire off the power_supply_changed event when the status returned from the sensor is actually different, we delay sending the the notification, and instead poll on it looking for a change. The amount of time to poll is configurable via platform data. Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Diffstat (limited to 'include/linux/power')
-rw-r--r--include/linux/power/bq20z75.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/power/bq20z75.h b/include/linux/power/bq20z75.h
index b0843b68af9..1398eb004e8 100644
--- a/include/linux/power/bq20z75.h
+++ b/include/linux/power/bq20z75.h
@@ -29,11 +29,14 @@
* @battery_detect: GPIO which is used to detect battery presence
* @battery_detect_present: gpio state when battery is present (0 / 1)
* @i2c_retry_count: # of times to retry on i2c IO failure
+ * @poll_retry_count: # of times to retry looking for new status after
+ * external change notification
*/
struct bq20z75_platform_data {
int battery_detect;
int battery_detect_present;
int i2c_retry_count;
+ int poll_retry_count;
};
#endif