From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751464AbdCQN6g (ORCPT ); Fri, 17 Mar 2017 09:58:36 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:55466 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751039AbdCQN6e (ORCPT ); Fri, 17 Mar 2017 09:58:34 -0400 From: Enric Balletbo i Serra To: Olof Johansson , Benson Leung , Lee Jones Cc: linux-kernel@vger.kernel.org, Gwendal Grignou Subject: [PATCH 01/13] mfd: cros_ec: Add helper for event notifier. Date: Fri, 17 Mar 2017 14:57:42 +0100 Message-Id: <20170317135754.1684-2-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170317135754.1684-1-enric.balletbo@collabora.com> References: <20170317135754.1684-1-enric.balletbo@collabora.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Gwendal Grignou Add cros_ec_get_event() entry point to retrieve event within functions called by the notifier. Signed-off-by: Gwendal Grignou Signed-off-by: Enric Balletbo i Serra Acked-by: Lee Jones --- drivers/platform/chrome/cros_ec_proto.c | 20 ++++++++++++++++++++ include/linux/mfd/cros_ec.h | 10 ++++++++++ 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 7a01c94..2ceb245 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; -- 2.9.3