platform/chrome: cros_ec_lightbar - Add lightbar program feature to sysfs

Add a program feature so we can upload and run programs for lightbar
sequences. We should be able to use this to shift sequences out of the
EC and save space there.

  $ cat <suitable program bin> > /sys/devices/.../cros_ec/program
  $ echo program > /sys/devices/.../cros_ec/sequence

Signed-off-by: Eric Caruso <ejcaruso@chromium.org>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benson Leung <bleung@chromium.org>

1 files changed, 11 insertions, 1 deletions

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index 1b19e424e1cf..dbea5802e83b 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -1162,6 +1162,13 @@ struct lightbar_params_v1 {
         struct rgb_s color[8];                  /* 0-3 are Google colors */
 } __packed;
 
+/* Lightbar program */
+#define EC_LB_PROG_LEN 192
+struct lightbar_program {
+        uint8_t size;
+        uint8_t data[EC_LB_PROG_LEN];
+};
+
 struct ec_params_lightbar {
         uint8_t cmd;                  /* Command (see enum lightbar_command) */
         union {
@@ -1188,6 +1195,7 @@ struct ec_params_lightbar {
 
                 struct lightbar_params_v0 set_params_v0;
                 struct lightbar_params_v1 set_params_v1;
+                struct lightbar_program set_program;
         };
 } __packed;
 
@@ -1220,7 +1228,8 @@ 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;
 
@@ -1244,6 +1253,7 @@ 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
 };