0001-host2me-feedback.patch

From 12563a931cb533ca82319f1db783f1516341c4ea Mon Sep 17 00:00:00 2001
From: Dorian Stoll <dorian.stoll@tmsp.io>
Date: Tue, 19 May 2020 16:33:33 +0200
Subject: [PATCH 1/2] host2me-feedback

---
 control.c           | 29 +++++++++++++++++++++++++++++
 control.h           |  2 ++
 protocol/feedback.h | 13 ++++++++++++-
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/control.c b/control.c
index 9179eca..9d2f892 100644
--- a/control.c
+++ b/control.c
@@ -57,6 +57,35 @@ int ipts_control_send_feedback(struct ipts_context *ipts,
 			&cmd, sizeof(struct ipts_feedback_cmd));
 }
 
+int ipts_control_send_host2me_feedback(struct ipts_context *ipts,
+		u32 feedback_type, u8 *data, size_t size)
+{
+	struct ipts_buffer_info host2me;
+	struct ipts_feedback *feedback;
+	struct ipts_feedback_cmd cmd;
+
+	host2me = ipts->host2me;
+	feedback = (struct ipts_feedback *)host2me.address;
+
+	memset(feedback, 0, sizeof(struct ipts_feedback));
+	memset(&cmd, 0, sizeof(struct ipts_feedback_cmd));
+
+	feedback->type = IPTS_FEEDBACK_TYPE_NONE;
+	feedback->feedback_data_type = feedback_type;
+	feedback->size = size;
+	feedback->transaction = 16;
+	feedback->reserved[4] = 0xAC;
+
+	if (data && size > 0)
+		memcpy(feedback->data, data, size);
+
+	cmd.buffer = 16;
+	cmd.transaction = 0;
+
+	return ipts_control_send(ipts, IPTS_CMD(FEEDBACK),
+			&cmd, sizeof(struct ipts_feedback_cmd));
+}
+
 int ipts_control_start(struct ipts_context *ipts)
 {
 	ipts->status = IPTS_HOST_STATUS_INIT;
diff --git a/control.h b/control.h
index e57609c..fabd7f7 100644
--- a/control.h
+++ b/control.h
@@ -14,5 +14,7 @@ int ipts_control_send(struct ipts_context *ipts,
 		u32 cmd, void *data, u32 size);
 int ipts_control_send_feedback(struct ipts_context *ipts,
 		u32 buffer, u32 transaction);
+int ipts_control_send_host2me_feedback(struct ipts_context *ipts,
+		u32 feedback_type, u8 *data, size_t size);
 
 #endif /* _IPTS_CONTROL_H_ */
diff --git a/protocol/feedback.h b/protocol/feedback.h
index 8b3d8b6..bb4529c 100644
--- a/protocol/feedback.h
+++ b/protocol/feedback.h
@@ -17,11 +17,22 @@ enum ipts_feedback_type {
 	IPTS_FEEDBACK_TYPE_MAX
 };
 
+enum ipts_feedback_data_types {
+	IPTS_FEEDBACK_DATA_TYPE_FEEDBACK = 0,
+	IPTS_FEEDBACK_DATA_TYPE_SET_FEATURES,
+	IPTS_FEEDBACK_DATA_TYPE_GET_FEATURES,
+	IPTS_FEEDBACK_DATA_TYPE_OUTPUT_REPORT,
+	IPTS_FEEDBACK_DATA_TYPE_STORE_DATA,
+	IPTS_FEEDBACK_DATA_TYPE_MAX
+};
+
 struct ipts_feedback {
 	u32 type;
 	u32 size;
 	u32 transaction;
-	u8 reserved[52];
+	u32 protocol_ver;
+	u32 feedback_data_type;
+	u8 reserved[44];
 	u8 data[];
 } __packed;
 
-- 
2.26.2

0002-get-features-test.patch

From c8edb1c65e46cfa743e79dedf173d7967c5d8c32 Mon Sep 17 00:00:00 2001
From: Dorian Stoll <dorian.stoll@tmsp.io>
Date: Sat, 23 May 2020 10:43:54 +0200
Subject: [PATCH 2/2] get-features-test

---
 data.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/data.c b/data.c
index 568bf04..768e38d 100644
--- a/data.c
+++ b/data.c
@@ -10,21 +10,33 @@
 #include "params.h"
 #include "payload.h"
 #include "protocol/data.h"
+#include "protocol/feedback.h"
 
 static void ipts_data_handle_input(struct ipts_context *ipts, int buffer_id)
 {
 	struct ipts_buffer_info buffer;
 	struct ipts_data *data;
 
+	u32 wdata[3];
+
 	buffer = ipts->data[buffer_id];
 	data = (struct ipts_data *)buffer.address;
 
 	if (ipts_params.debug) {
+		dev_info(ipts->dev, "Type: %d\n", data->type);
 		dev_info(ipts->dev, "Buffer %d\n", buffer_id);
 		print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 32, 1,
 				data->data, data->size, false);
 	}
 
+	wdata[0] = 0x4; // TOUCH_WRITE_DATA_TYPE_GET_FEATURES
+	wdata[1] = 0x1; // TOUCH_WRITE_HDR.WriteDataLen
+	wdata[2] = 0x8; // HID report ID
+
+	ipts_control_send_host2me_feedback(ipts,
+			IPTS_FEEDBACK_DATA_TYPE_GET_FEATURES,
+			(u8 *)wdata, sizeof(wdata) * 4);
+
 	switch (data->type) {
 	case IPTS_DATA_TYPE_PAYLOAD:
 		ipts_payload_handle_input(ipts, data);
-- 
2.26.2