chromeec: Add battery status event and re-enable _BIX

Add a new host event to send a notify(0x80) to the battery
when the EC indicates that battery status has changed.

The kernel has fixed the bug with _BIX method so it can
be enabled now.

BUG=chrome-os-partner:32196
BRANCH=samus
TEST=build and boot on samus

Change-Id: I1b8068df7abf1c8ebdc3a89602896b863accb7f3
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Original-Commit-Id: a779fc7f32729adb60d8bc220325444ebc20e0d2
Original-Change-Id: I0ebb17e5441e875875d98168ce3c31486d57330e
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/220320
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9212
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

3 files changed, 22 insertions, 4 deletions

diff --git a/src/ec/google/chromeec/acpi/battery.asl b/src/ec/google/chromeec/acpi/battery.asl
index 2ef1199b52..5591b334e0 100644
--- a/src/ec/google/chromeec/acpi/battery.asl
+++ b/src/ec/google/chromeec/acpi/battery.asl
@@ -126,9 +126,7 @@ Device (BAT0)
 		Return (PBIF)
 	}
 
-	// Extended Battery info method is disabled for now due to
-	// a bug in the Linux kernel: http://crosbug.com/28747
-	Method (XBIX, 0, Serialized)
+	Method (_BIX, 0, Serialized)
 	{
 		// Last Full Charge Capacity
 		Store (BTDF, Index (PBIX, 3))
diff --git a/src/ec/google/chromeec/acpi/ec.asl b/src/ec/google/chromeec/acpi/ec.asl
index 734d22394a..7cd8f75dbf 100644
--- a/src/ec/google/chromeec/acpi/ec.asl
+++ b/src/ec/google/chromeec/acpi/ec.asl
@@ -312,6 +312,13 @@ Device (EC0)
 	}
 #endif
 
+	// Battery Status
+	Method (_Q17, 0, NotSerialized)
+	{
+		Store ("EC: BATTERY STATUS", Debug)
+		Notify (BAT0, 0x80)
+	}
+
 	/*
 	 * Dynamic Platform Thermal Framework support
 	 */
diff --git a/src/ec/google/chromeec/ec_commands.h b/src/ec/google/chromeec/ec_commands.h
index 0687641416..bd94281169 100644
--- a/src/ec/google/chromeec/ec_commands.h
+++ b/src/ec/google/chromeec/ec_commands.h
@@ -275,6 +275,9 @@ enum host_event_code {
 	/* PD MCU triggering host event */
 	EC_HOST_EVENT_PD_MCU = 22,
 
+	/* Battery Status flags have changed */
+	EC_HOST_EVENT_BATTERY_STATUS = 23,
+
 	/*
 	 * 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
@@ -1032,6 +1035,13 @@ struct lightbar_params_v1 {
 	struct rgb_s color[8];			/* 0-3 are Google colors */
 } __packed;
 
+/* Lightbyte program. */
+#define LB_PROG_LEN 192
+struct lb_program {
+	uint8_t size;
+	uint8_t data[LB_PROG_LEN];
+};
+
 struct ec_params_lightbar {
 	uint8_t cmd;		      /* Command (see enum lightbar_command) */
 	union {
@@ -1058,6 +1068,7 @@ struct ec_params_lightbar {
 
 		struct lightbar_params_v0 set_params_v0;
 		struct lightbar_params_v1 set_params_v1;
+		struct lb_program set_program;
 	};
 } __packed;
 
@@ -1090,7 +1101,8 @@ struct ec_response_lightbar {
 		struct {
 			/* no return params */
 		} off, on, init, set_brightness, seq, reg, set_rgb,
-			demo, set_params_v0, set_params_v1;
+			demo, set_params_v0, set_params_v1,
+			set_program;
 	};
 } __packed;
 
@@ -1114,6 +1126,7 @@ enum lightbar_command {
 	LIGHTBAR_CMD_GET_DEMO = 15,
 	LIGHTBAR_CMD_GET_PARAMS_V1 = 16,
 	LIGHTBAR_CMD_SET_PARAMS_V1 = 17,
+	LIGHTBAR_CMD_SET_PROGRAM = 18,
 	LIGHTBAR_NUM_CMDS
 };