linux-kernel - [PATCH v2 2/4] mfd: cros_ec: Introduce RTC commands and events definitions.

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Message-Id: <20170119123032.24679-2-enric.balletbo@collabora.com>
Date:   Thu, 19 Jan 2017 13:30:30 +0100
From:   Enric Balletbo i Serra <enric.balletbo@...labora.com>
To:     linux-kernel@...r.kernel.org, rtc-linux@...glegroups.com
Cc:     Olof Johansson <olof@...om.net>, Lee Jones <lee.jones@...aro.org>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
        Stephen Barber <smbarber@...omium.org>
Subject: [PATCH v2 2/4] mfd: cros_ec: Introduce RTC commands and events definitions.

From: Stephen Barber <smbarber@...omium.org>

The EC can function as a simple RT, this patch adds the RTC related
definitions needed by the rtc-cros-ec driver.

Signed-off-by: Stephen Barber <smbarber@...omium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
Acked-by: Lee Jones <lee.jones@...aro.org>
---

Changelog:

 * Added the ack by Lee Jones

 include/linux/mfd/cros_ec_commands.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index 80d401d..73f7a62 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -286,6 +286,9 @@ enum host_event_code {
 	/* Hang detect logic detected a hang and warm rebooted the AP */
 	EC_HOST_EVENT_HANG_REBOOT = 21,
 
+	/* EC RTC event occurred */
+	EC_HOST_EVENT_RTC = 26,
+
 	/*
 	 * The high bit of the event mask is not used as a host event code.  If
 	 * it reads back as set, then the entire event mask should be
@@ -790,6 +793,8 @@ enum ec_feature_code {
 	EC_FEATURE_USB_MUX = 23,
 	/* Motion Sensor code has an internal software FIFO */
 	EC_FEATURE_MOTION_SENSE_FIFO = 24,
+	/* EC has RTC feature that can be controlled by host commands */
+	EC_FEATURE_RTC = 27,
 };
 
 #define EC_FEATURE_MASK_0(event_code) (1UL << (event_code % 32))
@@ -1682,6 +1687,9 @@ struct ec_response_rtc {
 #define EC_CMD_RTC_SET_VALUE 0x46
 #define EC_CMD_RTC_SET_ALARM 0x47
 
+/* Pass as param to SET_ALARM to clear the current alarm */
+#define EC_RTC_ALARM_CLEAR 0
+
 /*****************************************************************************/
 /* Port80 log access */
 
-- 
2.9.3