On Wed, 11 Jan 2017, Enric Balletbo i Serra wrote:
> From: Gwendal Grignou <gwen...@chromium.org>
>
> Add cros_ec_get_event() entry point to retrieve event within functions
> called by the notifier.
>
> Signed-off-by: Gwendal Grignou <gwen...@chromium.org>
> Signed-off-by: Enric Balletbo i Serra <enric.balle...@collabora.com>
> ---
> drivers/platform/chrome/cros_ec_proto.c | 20 ++++++++++++++++++++
> include/linux/mfd/cros_ec.h | 10 ++++++++++
Acked-by: Lee Jones <lee.jo...@linaro.org>
> 2 files changed, 30 insertions(+)
>
> diff --git a/drivers/platform/chrome/cros_ec_proto.c
> b/drivers/platform/chrome/cros_ec_proto.c
> index ed5dee7..7428c2b 100644
> --- a/drivers/platform/chrome/cros_ec_proto.c
> +++ b/drivers/platform/chrome/cros_ec_proto.c
> @@ -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);
> diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
> index b3d04de..be2c4eb 100644
> --- a/include/linux/mfd/cros_ec.h
> +++ b/include/linux/mfd/cros_ec.h
> @@ -299,6 +299,16 @@ 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;
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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