touch: fts: support firmware grip size commandandroid-11.0.0_r0.116android-11.0.0_r0.110android-11.0.0_r0.106android-msm-barbet-4.19-android11-d2

Bug: 182538797
Test: enable/disable twoshay and check with the following commands:
  $ adb shell "echo 01 A4 06 C3 > /proc/fts/driver_test"
  $ adb shell "echo 02 A7 00 00 00 1B 00 > /proc/fts/driver_test ; cat /proc/fts/driver_test"
  The meaning of the last 4 hex:
  Pure fw setting:
  - 0003 left and right edge grip rejection and edge palm rejection: off.
  After sent the grip switch and size commands:
  - 0000 left and right edge grip rejection and edge palm rejection: off.
  - FF03 left and right edge grip rejection and edge palm rejection: on.
Signed-off-by: Tai Kuo <taikuo@google.com>
Change-Id: I81e5ae6440d2aa56f94a33e55377a04fd8e2a7d1

2 files changed, 22 insertions, 2 deletions

diff --git a/fts.c b/fts.c
index aa61cbe..5ee7ff3 100644
--- a/fts.c
+++ b/fts.c
@@ -4096,12 +4096,27 @@ int fts_enable_grip(struct fts_ts_info *info, bool enable)
 		{0xC0, 0x03, 0x10, 0xFF, 0x03, 0x00, 0x00, 0x00, 0x00};
 	static uint8_t disable_cmd[] =
 		{0xC0, 0x03, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+	static uint8_t left_size_cmd[] =
+		{0xC0, 0x03, 0x20, 0x00/* unit: px */, 0x00, 0x00, 0x00, 0x5F, 0x09};
+	static uint8_t right_size_cmd[] =
+		{0xC0, 0x03, 0x21, 0x00/* unit: px */, 0x00, 0x00, 0x00, 0x5F, 0x09};
 	int res;
 
-	if (enable)
+	if (enable) {
+		if (info->board->fw_grip_area) {
+			left_size_cmd[3] = info->board->fw_grip_area;
+			right_size_cmd[3] = info->board->fw_grip_area;
+			res = fts_write(left_size_cmd, sizeof(left_size_cmd));
+			res = fts_write(right_size_cmd, sizeof(right_size_cmd));
+		}
 		res = fts_write(enable_cmd, sizeof(enable_cmd));
-	else
+	} else {
+		if (info->board->fw_grip_area) {
+			res = fts_write(left_size_cmd, sizeof(left_size_cmd));
+			res = fts_write(right_size_cmd, sizeof(right_size_cmd));
+		}
 		res = fts_write(disable_cmd, sizeof(disable_cmd));
+	}
 	if (res < 0)
 		pr_err("%s: fts_write failed with res=%d.\n", __func__,
 		       res);
@@ -6065,6 +6080,10 @@ static int parse_dt(struct device *dev, struct fts_hw_platform_data *bdata)
 		    bdata->offload_id);
 	}
 
+	if (of_property_read_u8(np, "st,grip_area", &bdata->fw_grip_area))
+		bdata->fw_grip_area = 0;
+	pr_info("Firmware grip area = %u\n", bdata->fw_grip_area);
+
 	return OK;
 }
 
diff --git a/fts.h b/fts.h
index aba0ef4..c2f0575 100644
--- a/fts.h
+++ b/fts.h
@@ -301,6 +301,7 @@ struct fts_hw_platform_data {
 	u32 initial_panel_index;
 	u32 *force_pi_cfg_ver;
 	u32 offload_id;
+	u8 fw_grip_area;
 };
 
 /* Bits for the bus reference mask */