Merge tag 'rtc-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Not much this cycle. I've pushed the at32ap700x removal late but it is
  unlikely to cause any issues.

  Summary:

  Subsystem:
   - Move ABI documentation to Documentation/ABI

  New driver:
   - NXP i.MX53 SRTC
   - Chrome OS EC RTC

  Drivers:
   - Remove at32ap700x
   - Many fixes in various error paths"

* tag 'rtc-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  rtc: remove rtc-at32ap700x
  Documentation: rtc: move iotcl interface documentation to ABI
  Documentation: rtc: add sysfs file permissions
  Documentation: rtc: move sysfs documentation to ABI
  rtc: mxc_v2: remove __exit annotation
  rtc: mxc_v2: Remove unnecessary platform_get_resource() error check
  rtc: add mxc driver for i.MX53 SRTC
  dt-bindings: rtc: add bindings for i.MX53 SRTC
  rtc: r7301: Fix a possible sleep-in-atomic bug in rtc7301_set_time
  rtc: r7301: Fix a possible sleep-in-atomic bug in rtc7301_read_time
  rtc: omap: fix unbalanced clk_prepare_enable/clk_disable_unprepare
  rtc: ac100: Fix multiple race conditions
  rtc: sun6i: ensure rtc is kfree'd on error
  rtc: cros-ec: add cros-ec-rtc driver.
  mfd: cros_ec: Introduce RTC commands and events definitions.
  rtc: stm32: Fix copyright
  rtc: Remove unused RTC_DEVICE_NAME_SIZE
  rtc: r9701: Remove r9701_remove function
  rtc: brcmstb-waketimer: fix error handling in brcmstb_waketmr_probe()

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 */