[PATCH v2 2/8] Input: synaptics-rmi4: Add parameters for dribble packets and palm detect gesture

[Andrew Duggan]

The rmi_f11 driver currently disables dribble packets and the palm detect
gesture for all devices. This patch creates a parameter in the 2d sensor
platform data for controlling this functionality on a per device basis.

For more information on dribble packets:
Commit 05ba999fcabb ("HID: rmi: disable dribble packets on Synaptics
touchpads")

For more information on the palm detect gesture:
Commit f097deef59a6 ("HID: rmi: disable palm detect gesture when present")

Signed-off-by: Andrew Duggan <aduggan@xxxxxxxxxxxxx>
---
 drivers/input/rmi4/rmi_2d_sensor.h |  2 ++
 drivers/input/rmi4/rmi_f01.c       |  6 +++---
 drivers/input/rmi4/rmi_f11.c       | 32 ++++++++++++++++++++++++++++----
 include/linux/rmi.h                | 21 +++++++++++++--------
 4 files changed, 46 insertions(+), 15 deletions(-)

diff --git a/drivers/input/rmi4/rmi_2d_sensor.h b/drivers/input/rmi4/rmi_2d_sensor.h
index 77fcdfe..c871bef 100644
--- a/drivers/input/rmi4/rmi_2d_sensor.h
+++ b/drivers/input/rmi4/rmi_2d_sensor.h
@@ -67,6 +67,8 @@ struct rmi_2d_sensor {
 	u8 report_rel;
 	u8 x_mm;
 	u8 y_mm;
+	enum rmi_reg_state dribble;
+	enum rmi_reg_state palm_detect;
 };
 
 int rmi_2d_sensor_of_probe(struct device *dev,
diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
index fac81fc..2cfa9f6 100644
--- a/drivers/input/rmi4/rmi_f01.c
+++ b/drivers/input/rmi4/rmi_f01.c
@@ -327,12 +327,12 @@ static int rmi_f01_probe(struct rmi_function *fn)
 	}
 
 	switch (pdata->power_management.nosleep) {
-	case RMI_F01_NOSLEEP_DEFAULT:
+	case RMI_REG_STATE_DEFAULT:
 		break;
-	case RMI_F01_NOSLEEP_OFF:
+	case RMI_REG_STATE_OFF:
 		f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_NOSLEEP_BIT;
 		break;
-	case RMI_F01_NOSLEEP_ON:
+	case RMI_REG_STATE_ON:
 		f01->device_control.ctrl0 |= RMI_F01_CTRL0_NOSLEEP_BIT;
 		break;
 	}
diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c
index ec8a10d..e691432 100644
--- a/drivers/input/rmi4/rmi_f11.c
+++ b/drivers/input/rmi4/rmi_f11.c
@@ -1125,6 +1125,8 @@ static int rmi_f11_initialize(struct rmi_function *fn)
 	sensor->topbuttonpad = f11->sensor_pdata.topbuttonpad;
 	sensor->kernel_tracking = f11->sensor_pdata.kernel_tracking;
 	sensor->dmax = f11->sensor_pdata.dmax;
+	sensor->dribble = f11->sensor_pdata.dribble;
+	sensor->palm_detect = f11->sensor_pdata.palm_detect;
 
 	if (f11->sens_query.has_physical_props) {
 		sensor->x_mm = f11->sens_query.x_sensor_size_mm;
@@ -1192,11 +1194,33 @@ static int rmi_f11_initialize(struct rmi_function *fn)
 		ctrl->ctrl0_11[RMI_F11_DELTA_Y_THRESHOLD] =
 			sensor->axis_align.delta_y_threshold;
 
-	if (f11->sens_query.has_dribble)
-		ctrl->ctrl0_11[0] = ctrl->ctrl0_11[0] & ~BIT(6);
+	if (f11->sens_query.has_dribble) {
+		switch (sensor->dribble) {
+		case RMI_REG_STATE_OFF:
+			ctrl->ctrl0_11[0] = ctrl->ctrl0_11[0] & ~BIT(6);
+			break;
+		case RMI_REG_STATE_ON:
+			ctrl->ctrl0_11[0] = ctrl->ctrl0_11[0] | BIT(6);
+			break;
+		case RMI_REG_STATE_DEFAULT:
+		default:
+			break;
+		}
+	}
 
-	if (f11->sens_query.has_palm_det)
-		ctrl->ctrl0_11[11] = ctrl->ctrl0_11[11] & ~BIT(0);
+	if (f11->sens_query.has_palm_det) {
+		switch (sensor->palm_detect) {
+		case RMI_REG_STATE_OFF:
+			ctrl->ctrl0_11[11] = ctrl->ctrl0_11[11] & ~BIT(0);
+			break;
+		case RMI_REG_STATE_ON:
+			ctrl->ctrl0_11[11] = ctrl->ctrl0_11[11] & BIT(0);
+			break;
+		case RMI_REG_STATE_DEFAULT:
+		default:
+			break;
+		}
+	}
 
 	rc = f11_write_control_regs(fn, &f11->sens_query,
 			   &f11->dev_controls, fn->fd.query_base_addr);
diff --git a/include/linux/rmi.h b/include/linux/rmi.h
index e0aca14..bda72f2 100644
--- a/include/linux/rmi.h
+++ b/include/linux/rmi.h
@@ -99,6 +99,8 @@ struct rmi_2d_sensor_platform_data {
 	bool topbuttonpad;
 	bool kernel_tracking;
 	int dmax;
+	int dribble;
+	int palm_detect;
 };
 
 /**
@@ -116,14 +118,17 @@ struct rmi_f30_data {
 	bool disable;
 };
 
-/**
- * struct rmi_f01_power - override default power management settings.
- *
+
+/*
+ * Set the state of a register
+ *	DEFAULT - use the default value set by the firmware config
+ *	OFF - explicitly disable the register
+ *	ON - explicitly enable the register
  */
-enum rmi_f01_nosleep {
-	RMI_F01_NOSLEEP_DEFAULT = 0,
-	RMI_F01_NOSLEEP_OFF = 1,
-	RMI_F01_NOSLEEP_ON = 2
+enum rmi_reg_state {
+	RMI_REG_STATE_DEFAULT = 0,
+	RMI_REG_STATE_OFF = 1,
+	RMI_REG_STATE_ON = 2
 };
 
 /**
@@ -143,7 +148,7 @@ enum rmi_f01_nosleep {
  * when the touch sensor is in doze mode, in units of 10ms.
  */
 struct rmi_f01_power_management {
-	enum rmi_f01_nosleep nosleep;
+	enum rmi_reg_state nosleep;
 	u8 wakeup_threshold;
 	u8 doze_holdoff;
 	u8 doze_interval;
-- 
2.5.0