linux-kernel - [RESEND PATCH v3 25/30] mfd: cros_ec: Add API for Touchpad support

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Message-Id: <20190603183401.151408-26-gwendal@chromium.org>
Date:   Mon,  3 Jun 2019 11:33:56 -0700
From:   Gwendal Grignou <gwendal@...omium.org>
To:     enric.balletbo@...labora.com, bleung@...omium.org,
        groeck@...omium.org, lee.jones@...aro.org, jic23@...nel.org,
        broonie@...nel.org, cychiang@...omium.org, tiwai@...e.com,
        fabien.lahoudere@...labora.com
Cc:     linux-iio@...r.kernel.org, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org,
        Gwendal Grignou <gwendal@...omium.org>
Subject: [RESEND PATCH v3 25/30] mfd: cros_ec: Add API for Touchpad support

Add API to control touchpad presented by Embedded Controller.

Acked-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
Acked-by: Benson Leung <bleung@...omium.org>
Reviewed-by: Fabien Lahoudere <fabien.lahoudere@...labora.com>
Signed-off-by: Gwendal Grignou <gwendal@...omium.org>
---
 include/linux/mfd/cros_ec_commands.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

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
@@ -5043,6 +5043,32 @@ 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 */
 
-- 
2.21.0.1020.gf2820cf01a-goog