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mfd: cros_ec: Add helper for event notifier.

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Add cros_ec_get_event() entry point to retrieve event within functions
called by the notifier.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benson Leung <bleung@chromium.org>
This commit is contained in:
Gwendal Grignou 2017-05-16 17:46:48 +02:00 committed by Benson Leung
parent 32c1431eea
commit 68c35ea25b
2 changed files with 30 additions and 0 deletions
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20
drivers/platform/chrome/cros_ec_proto.c
View file

@ -494,3 +494,23 @@ int cros_ec_get_next_event(struct cros_ec_device *ec_dev)
return get_keyboard_state_event(ec_dev);
}
EXPORT_SYMBOL(cros_ec_get_next_event);
u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev)
{
u32 host_event;
BUG_ON(!ec_dev->mkbp_event_supported);
if (ec_dev->event_data.event_type != EC_MKBP_EVENT_HOST_EVENT)
return 0;
if (ec_dev->event_size != sizeof(host_event)) {
dev_warn(ec_dev->dev, "Invalid host event size\n");
return 0;
}
host_event = get_unaligned_le32(&ec_dev->event_data.data.host_event);
return host_event;
}
EXPORT_SYMBOL(cros_ec_get_host_event);

10
include/linux/mfd/cros_ec.h
View file

@ -300,6 +300,16 @@ int cros_ec_query_all(struct cros_ec_device *ec_dev);
*/
int cros_ec_get_next_event(struct cros_ec_device *ec_dev);
/**
* cros_ec_get_host_event - Return a mask of event set by the EC.
*
* When MKBP is supported, when the EC raises an interrupt,
* We collect the events raised and call the functions in the ec notifier.
*
* This function is a helper to know which events are raised.
*/
u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
/* sysfs stuff */
extern struct attribute_group cros_ec_attr_group;
extern struct attribute_group cros_ec_lightbar_attr_group;