synaptics: support dynamic grip configuration

Bug: 235176060
Test: Touch is working fine.

Signed-off-by: davidycchen <davidycchen@google.com>
Change-Id: I8a5d2403db297cbf4c30655d64066c477c0b244f

4 files changed, 58 insertions, 4 deletions

diff --git a/syna_tcm2.c b/syna_tcm2.c
index 5191f01..f610c6e 100644
--- a/syna_tcm2.c
+++ b/syna_tcm2.c
@@ -237,6 +237,16 @@ static void syna_dev_restore_feature_setting(struct syna_tcm *tcm, unsigned int
 			tcm->hw_if->compression_threhsold,
 			delay_ms_resp);
 
+	syna_tcm_set_dynamic_config(tcm->tcm_dev,
+			DC_GRIP_DELTA_THRESHOLD,
+			tcm->hw_if->grip_delta_threshold,
+			delay_ms_resp);
+
+	syna_tcm_set_dynamic_config(tcm->tcm_dev,
+			DC_GRIP_BORDER_THRESHOLD,
+			tcm->hw_if->grip_border_threshold,
+			delay_ms_resp);
+
 	if (tcm->hw_if->dynamic_report_rate) {
 		syna_tcm_set_dynamic_config(tcm->tcm_dev,
 				DC_REPORT_RATE_SWITCH,
@@ -1062,11 +1072,17 @@ static void syna_offload_set_running(struct syna_tcm *tcm, bool running)
 	}
 
 	/*
-	 * Disable firmware grip_suppression/palm_rejection when offload is running and
-	 * upper layer grip_suppression/palm_rejection is enabled.
+	 * Use the configurations set by touch service if it's running.
+	 * Enable the firmware grip and palm if the touch service isn't running.
 	 */
-	next_enable_fw_grip = (running && (tcm->offload.config.filter_grip == 1)) ? 0 : 1;
-	next_enable_fw_palm = (running && (tcm->offload.config.filter_palm == 1)) ? 0 : 1;
+	if (running) {
+		next_enable_fw_grip = tcm->offload.config.filter_grip;
+		next_enable_fw_palm = tcm->offload.config.filter_palm;
+	} else {
+		/* Enable the firmware grip and palm when touch */
+		next_enable_fw_grip = 1;
+		next_enable_fw_palm = 1;
+	}
 
 	if (next_enable_fw_grip != tcm->enable_fw_grip && tcm->enable_fw_grip < 2) {
 		tcm->enable_fw_grip = next_enable_fw_grip;
diff --git a/syna_tcm2_platform.h b/syna_tcm2_platform.h
index 8242d95..f411f65 100644
--- a/syna_tcm2_platform.h
+++ b/syna_tcm2_platform.h
@@ -148,6 +148,8 @@ struct syna_hw_interface {
 	const char *fw_name;
 	int pixels_per_mm;
 	u16 compression_threhsold;
+	u16 grip_delta_threshold;
+	u16 grip_border_threshold;
 #if IS_ENABLED(CONFIG_TOUCHSCREEN_OFFLOAD)
 	u32 offload_id;
 #endif
diff --git a/syna_tcm2_platform_spi.c b/syna_tcm2_platform_spi.c
index d0a4098..202efec 100644
--- a/syna_tcm2_platform_spi.c
+++ b/syna_tcm2_platform_spi.c
@@ -696,6 +696,40 @@ static int syna_spi_parse_dt(struct syna_hw_interface *hw_if,
 		hw_if->compression_threhsold = 15;
 	}
 
+	prop = of_find_property(np, "synaptics,grip-delta-threshold", NULL);
+	if (prop && prop->length) {
+		retval = of_property_read_u32(np, "synaptics,grip-delta-threshold",
+				&value);
+		if (retval < 0) {
+			LOGE("Fail to read synaptics,grip-delta-threshold\n");
+			return retval;
+		}
+
+		hw_if->grip_delta_threshold = value;
+	} else {
+		/*
+		 * Set default as 50.
+		 */
+		hw_if->grip_delta_threshold = 50;
+	}
+
+	prop = of_find_property(np, "synaptics,grip-border-threshold", NULL);
+	if (prop && prop->length) {
+		retval = of_property_read_u32(np, "synaptics,grip-border-threshold",
+				&value);
+		if (retval < 0) {
+			LOGE("Fail to read synaptics,grip-border-threshold\n");
+			return retval;
+		}
+
+		hw_if->grip_border_threshold = value;
+	} else {
+		/*
+		 * Set default as 50.
+		 */
+		hw_if->grip_border_threshold = 50;
+	}
+
 	hw_if->dynamic_report_rate = of_property_read_bool(np,"synaptics,dynamic-report-rate");
 
 #if IS_ENABLED(CONFIG_TOUCHSCREEN_OFFLOAD)
diff --git a/tcm/synaptics_touchcom_core_dev.h b/tcm/synaptics_touchcom_core_dev.h
index c42607d..2031e49 100644
--- a/tcm/synaptics_touchcom_core_dev.h
+++ b/tcm/synaptics_touchcom_core_dev.h
@@ -231,6 +231,8 @@ enum dynamic_tcm_config_id {
 	DC_TOUCH_SCAN_MODE = 0xF2,
 	DC_ENABLE_PALM_REJECTION = 0xF3,
 	DC_CONTINUOUSLY_REPORT = 0xF5,
+	DC_GRIP_DELTA_THRESHOLD = 0xF6,
+	DC_GRIP_BORDER_THRESHOLD = 0xF7,
 };
 
 /**