mfd: cros_ec: Introduce RTC commands and events definitions.

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@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index 2b16e95b9bb8..c6046a2e94d5 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -291,6 +291,9 @@ enum host_event_code {
         /* EC desires to change state of host-controlled USB mux */
         EC_HOST_EVENT_USB_MUX = 28,
 
+        /* 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
@@ -799,6 +802,8 @@ 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))
@@ -1709,6 +1714,9 @@ 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 */