mfd: cros_ec: Add API for Touchpad support

Add API to control touchpad presented by Embedded Controller.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Fabien Lahoudere <fabien.lahoudere@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 26 insertions, 0 deletions

diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index 52fd9bfafc7f..1d0311df44d3 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -5044,6 +5044,32 @@ struct ec_response_pd_chip_info_v1 {
 } __ec_align2;
 
 /*****************************************************************************/
+/* Touchpad MCU commands: range 0x0500-0x05FF */
+
+/* Perform touchpad self test */
+#define EC_CMD_TP_SELF_TEST 0x0500
+
+/* Get number of frame types, and the size of each type */
+#define EC_CMD_TP_FRAME_INFO 0x0501
+
+struct ec_response_tp_frame_info {
+        uint32_t n_frames;
+        uint32_t frame_sizes[0];
+} __ec_align4;
+
+/* Create a snapshot of current frame readings */
+#define EC_CMD_TP_FRAME_SNAPSHOT 0x0502
+
+/* Read the frame */
+#define EC_CMD_TP_FRAME_GET 0x0503
+
+struct ec_params_tp_frame_get {
+        uint32_t frame_index;
+        uint32_t offset;
+        uint32_t size;
+} __ec_align4;
+
+/*****************************************************************************/
 /* EC-EC communication commands: range 0x0600-0x06FF */
 
 #define EC_COMM_TEXT_MAX 8