rmi_f11.c is a driver for 2D touch sensors. It has been updated to support
the MT-B specification, partition control attributes between debugfs and sysfs,
and to use the standard bus model for loading/unloading.
Signed-off-by: Christopher Heiny <cheiny@xxxxxxxxxxxxx>
Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxxxxxx>
Cc: Naveen Kumar Gaddipati <naveen.gaddipati@xxxxxxxxxxxxxx>
Cc: Joeri de Gram <j.de.gram@xxxxxxxxx>
Cc: Henrik Rydberg <rydberg@xxxxxxxxxxx>
---
drivers/input/rmi4/rmi_f11.c | 2727 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 2727 insertions(+), 0 deletions(-)
diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c
new file mode 100644
index 0000000..bba818b
--- /dev/null
+++ b/drivers/input/rmi4/rmi_f11.c
@@ -0,0 +1,2727 @@
+/*
+ * Copyright (c) 2011,2012 Synaptics Incorporated
+ * Copyright (c) 2011 Unixphere
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define FUNCTION_DATA f11_data
+#define FNUM 11
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/kconfig.h>
+#include <linux/rmi.h>
+#include <linux/slab.h>
+#include "rmi_driver.h"
+
+#ifdef CONFIG_RMI4_DEBUG
+#include <linux/debugfs.h>
+#include <linux/fs.h>
+#include <linux/uaccess.h>
+#endif
+
+#define F11_MAX_NUM_OF_SENSORS 8
+#define F11_MAX_NUM_OF_FINGERS 10
+#define F11_MAX_NUM_OF_TOUCH_SHAPES 16
+
+#define F11_REL_POS_MIN -128
+#define F11_REL_POS_MAX 127
+
+#define FINGER_STATE_MASK 0x03
+#define GET_FINGER_STATE(f_states, i) \
+ ((f_states[i / 4] >> (2 * (i % 4))) & FINGER_STATE_MASK)
+
+#define F11_CTRL_SENSOR_MAX_X_POS_OFFSET 6
+#define F11_CTRL_SENSOR_MAX_Y_POS_OFFSET 8
+
+#define F11_CEIL(x, y) (((x) + ((y)-1)) / (y))
+#define INBOX(x, y, box) (x >= box.x && x < (box.x + box.width) \
+ && y >= box.y && y < (box.y + box.height))
+
+#define DEFAULT_XY_MAX 9999
+#define DEFAULT_MAX_ABS_MT_PRESSURE 255
+#define DEFAULT_MAX_ABS_MT_TOUCH 15
+#define DEFAULT_MAX_ABS_MT_ORIENTATION 1
+#define DEFAULT_MIN_ABS_MT_TRACKING_ID 1
+#define DEFAULT_MAX_ABS_MT_TRACKING_ID 10
+#define MAX_NAME_LENGTH 256
+
+static ssize_t f11_relreport_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t f11_relreport_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t f11_maxPos_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t f11_rezero_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static void rmi_f11_free_memory(struct rmi_function_container *fc);
+
+static int rmi_f11_initialize(struct rmi_function_container *fc);
+
+static int rmi_f11_create_sysfs(struct rmi_function_container *fc);
+
+static int rmi_f11_config(struct rmi_function_container *fc);
+
+static int rmi_f11_register_devices(struct rmi_function_container *fc);
+
+static void rmi_f11_free_devices(struct rmi_function_container *fc);
+
+static void f11_set_abs_params(struct rmi_function_container *fc, int index);
+
+static struct device_attribute attrs[] = {
+ __ATTR(relreport, RMI_RW_ATTR, f11_relreport_show, f11_relreport_store),
+ __ATTR(maxPos, RMI_RO_ATTR, f11_maxPos_show, rmi_store_error),
+ __ATTR(rezero, RMI_WO_ATTR, rmi_show_error, f11_rezero_store)
+};
+
+/**
+ * @rezero - writing 1 to this will cause the sensor to calibrate to the
+ * current capacitive state.
+ */
+union f11_2d_commands {
+ struct {
+ bool rezero:1;
+ u8 reserved:7;
+ } __attribute__((__packed__));
+ u8 reg;
+};
+
+/**
+ * @nbr_of_sensors - the number of 2D sensors on the touch device.
+ * @has_query9 - indicates the F11_2D_Query9 register exists.
+ * @has_query11 - indicates the F11_2D_Query11 register exists.
+ * @has_z_tuning - if set, the sensor supports Z tuning and registers
+ * F11_2D_Ctrl29 through F11_2D_Ctrl33 exist.
+ * @has_pos_interpolation_tuning - TBD
+ * @has_w_tuning - the sensor supports Wx and Wy scaling and registers
+ * F11_2D_Ctrl36 through F11_2D_Ctrl39 exist.
+ * @has_pitch_info - the X and Y pitches of the sensor electrodes can be
+ * configured and registers F11_2D_Ctrl40 and F11_2D_Ctrl41 exist.
+ * @has_default_finger_width - the default finger width settings for the
+ * sensor can be configured and registers F11_2D_Ctrl42 through F11_2D_Ctrl44
+ * exist.
+ * @has_segmentation_aggressiveness - the sensor’s ability to distinguish
+ * multiple objects close together can be configured and register F11_2D_Ctrl45
+ * exists.
+ * @has_tx_rw_clip - the inactive outside borders of the sensor can be
+ * configured and registers F11_2D_Ctrl46 through F11_2D_Ctrl49 exist.
+ * @has_drumming_correction - the sensor can be configured to distinguish
+ * between a fast flick and a quick drumming movement and registers
+ * F11_2D_Ctrl50 and F11_2D_Ctrl51 exist.
+ */
+struct f11_2d_device_query {
+ union {
+ struct {
+ u8 nbr_of_sensors:3;
+ bool has_query9:1;
+ bool has_query11:1;
+ u8 reserved:3;
+ } __attribute__((__packed__));
+ u8 f11_2d_query0;
+ };
+
+ union {
+ struct {
+ bool has_z_tuning:1;
+ bool has_pos_interpolation_tuning:1;
+ bool has_w_tuning:1;
+ bool has_pitch_info:1;
+ bool has_default_finger_width:1;
+ bool has_segmentation_aggressiveness:1;
+ bool has_tx_rw_clip:1;
+ bool has_drumming_correction:1;
+ } __attribute__((__packed__));
+ u8 f11_2d_query11;
+ };
+};
+
+/**
+ * @has_pen - detection of a stylus is supported and registers F11_2D_Ctrl20
+ * and F11_2D_Ctrl21 exist.
+ * @has_proximity - detection of fingers near the sensor is supported and
+ * registers F11_2D_Ctrl22 through F11_2D_Ctrl26 exist.
+ * @has_palm_det_sensitivity - the sensor supports the palm detect sensitivity
+ * feature and register F11_2D_Ctrl27 exists.
+ * @has_two_pen_thresholds - is has_pen is also set, then F11_2D_Ctrl35 exists.
+ * @has_contact_geometry - the sensor supports the use of contact geometry to
+ * map absolute X and Y target positions and registers F11_2D_Data18.* through
+ * F11_2D_Data27 exist.
+ */
+union f11_2d_query9 {
+ struct {
+ bool has_pen:1;
+ bool has_proximity:1;
+ bool has_palm_det_sensitivity:1;
+ bool has_suppress_on_palm_detect:1;
+ bool has_two_pen_thresholds:1;
+ bool has_contact_geometry:1;
+ } __attribute__((__packed__));
+ u8 reg;
+};
+
+/**
+ * @number_of_fingers - describes the maximum number of fingers the 2-D sensor
+ * supports.
+ * @has_rel - the sensor supports relative motion reporting.
+ * @has_abs - the sensor supports absolute poition reporting.
+ * @has_gestures - the sensor supports gesture reporting.
+ * @has_sensitivity_adjust - the sensor supports a global sensitivity
+ * adjustment.
+ * @configurable - the sensor supports various configuration options.
+ * @num_of_x_electrodes - the maximum number of electrodes the 2-D sensor
+ * supports on the X axis.
+ * @num_of_y_electrodes - the maximum number of electrodes the 2-D sensor
+ * supports on the Y axis.
+ * @max_electrodes - the total number of X and Y electrodes that may be
+ * configured.
+ * @abs_data_size - describes the format of data reported by the absolute
+ * data source. Only one format (the kind used here) is supported at this
+ * time.
+ * @has_anchored_finger - then the sensor supports the high-precision second
+ * finger tracking provided by the manual tracking and motion sensitivity
+ * options.
+ * @has_adjust_hyst - the difference between the finger release threshold and
+ * the touch threshold.
+ * @has_dribble - the sensor supports the generation of dribble interrupts,
+ * which may be enabled or disabled with the dribble control bit.
+ * @f11_2d_query6 - reserved.
+ * @has_single_tap - a basic single-tap gesture is supported.
+ * @has_tap_n_hold - tap-and-hold gesture is supported.
+ * @has_double_tap - double-tap gesture is supported.
+ * @has_early_tap - early tap is supported and reported as soon as the finger
+ * lifts for any tap event that could be interpreted as either a single tap
+ * or as the first tap of a double-tap or tap-and-hold gesture.
+ * @has_flick - flick detection is supported.
+ * @has_press - press gesture reporting is supported.
+ * @has_pinch - pinch gesture detection is supported.
+ * @has_palm_det - the 2-D sensor notifies the host whenever a large conductive
+ * object such as a palm or a cheek touches the 2-D sensor.
+ * @has_rotate - rotation gesture detection is supported.
+ * @has_touch_shapes - TouchShapes are supported. A TouchShape is a fixed
+ * rectangular area on the sensor that behaves like a capacitive button.
+ * @has_scroll_zones - scrolling areas near the sensor edges are supported.
+ * @has_individual_scroll_zones - if 1, then 4 scroll zones are supported;
+ * if 0, then only two are supported.
+ * @has_multi_finger_scroll - the multifinger_scrolling bit will be set when
+ * more than one finger is involved in a scrolling action.
+ * @nbr_touch_shapes - the total number of touch shapes supported.
+ */
+struct f11_2d_sensor_query {
+ union {
+ struct {
+ /* query1 */
+ u8 number_of_fingers:3;
+ bool has_rel:1;
+ bool has_abs:1;
+ bool has_gestures:1;
+ bool has_sensitivity_adjust:1;
+ bool configurable:1;
+ /* query2 */
+ u8 num_of_x_electrodes:7;
+ u8 reserved_1:1;
+ /* query3 */
+ u8 num_of_y_electrodes:7;
+ u8 reserved_2:1;
+ /* query4 */
+ u8 max_electrodes:7;
+ u8 reserved_3:1;
+ } __attribute__((__packed__));
+ u8 f11_2d_query1__4[4];
+ };
+
+ union {
+ struct {
+ u8 abs_data_size:3;
+ bool has_anchored_finger:1;
+ bool has_adj_hyst:1;
+ bool has_dribble:1;
+ u8 reserved_4:2;
+ } __attribute__((__packed__));
+ u8 f11_2d_query5;
+ };
+
+ u8 f11_2d_query6;
+
+ union {
+ struct {
+ bool has_single_tap:1;
+ bool has_tap_n_hold:1;
+ bool has_double_tap:1;
+ bool has_early_tap:1;
+ bool has_flick:1;
+ bool has_press:1;
+ bool has_pinch:1;
+ bool padding:1;
+
+ bool has_palm_det:1;
+ bool has_rotate:1;
+ bool has_touch_shapes:1;
+ bool has_scroll_zones:1;
+ bool has_individual_scroll_zones:1;
+ bool has_multi_finger_scroll:1;
+ } __attribute__((__packed__));
+ u8 f11_2d_query7__8[2];
+ };
+
+ union f11_2d_query9 query9;
+
+ union {
+ struct {
+ u8 nbr_touch_shapes:5;
+ } __attribute__((__packed__));
+ u8 f11_2d_query10;
+ };
+};
+
+/**
+ * @reporting_mode - controls how often finger position data is reported.
+ * @abs_pos_filt - when set, enables various noise and jitter filtering
+ * algorithms for absolute reports.
+ * @rel_pos_filt - when set, enables various noise and jitter filtering
+ * algorithms for relative reports.
+ * @rel_ballistics - enables ballistics processing for the relative finger
+ * motion on the 2-D sensor.
+ * @dribble - enables the dribbling feature.
+ * @report_beyond_clip - when this is set, fingers outside the active area
+ * specified by the x_clip and y_clip registers will be reported, but with
+ * reported finger position clipped to the edge of the active area.
+ * @palm_detect_thresh - the threshold at which a wide finger is considered a
+ * palm. A value of 0 inhibits palm detection.
+ * @motion_sensitivity - specifies the threshold an anchored finger must move
+ * before it is considered no longer anchored. High values mean more
+ * sensitivity.
+ * @man_track_en - for anchored finger tracking, whether the host (1) or the
+ * device (0) determines which finger is the tracked finger.
+ * @man_tracked_finger - when man_track_en is 1, specifies whether finger 0 or
+ * finger 1 is the tracked finger.
+ * @delta_x_threshold - 2-D position update interrupts are inhibited unless
+ * the finger moves more than a certain threshold distance along the X axis.
+ * @delta_y_threshold - 2-D position update interrupts are inhibited unless
+ * the finger moves more than a certain threshold distance along the Y axis.
+ * @velocity - When rel_ballistics is set, this register defines the
+ * velocity ballistic parameter applied to all relative motion events.
+ * @acceleration - When rel_ballistics is set, this register defines the
+ * acceleration ballistic parameter applied to all relative motion events.
+ * @sensor_max_x_pos - the maximum X coordinate reported by the sensor.
+ * @sensor_max_y_pos - the maximum Y coordinate reported by the sensor.
+ */
+union f11_2d_ctrl0_9 {
+ struct {
+ /* F11_2D_Ctrl0 */
+ u8 reporting_mode:3;
+ bool abs_pos_filt:1;
+ bool rel_pos_filt:1;
+ bool rel_ballistics:1;
+ bool dribble:1;
+ bool report_beyond_clip:1;
+ /* F11_2D_Ctrl1 */
+ u8 palm_detect_thres:4;
+ u8 motion_sensitivity:2;
+ bool man_track_en:1;
+ bool man_tracked_finger:1;
+ /* F11_2D_Ctrl2 and 3 */
+ u8 delta_x_threshold:8;
+ u8 delta_y_threshold:8;
+ /* F11_2D_Ctrl4 and 5 */
+ u8 velocity:8;
+ u8 acceleration:8;
+ /* F11_2D_Ctrl6 thru 9 */
+ u16 sensor_max_x_pos:12;
+ u8 ctrl7_reserved:4;
+ u16 sensor_max_y_pos:12;
+ u8 ctrl9_reserved:4;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[10];
+ u16 address;
+ } __attribute__((__packed__));
+};
+
+/**
+ * @single_tap_int_enable - enable tap gesture recognition.
+ * @tap_n_hold_int_enable - enable tap-and-hold gesture recognition.
+ * @double_tap_int_enable - enable double-tap gesture recognition.
+ * @early_tap_int_enable - enable early tap notification.
+ * @flick_int_enable - enable flick detection.
+ * @press_int_enable - enable press gesture recognition.
+ * @pinch_int_enable - enable pinch detection.
+ */
+union f11_2d_ctrl10 {
+ struct {
+ bool single_tap_int_enable:1;
+ bool tap_n_hold_int_enable:1;
+ bool double_tap_int_enable:1;
+ bool early_tap_int_enable:1;
+ bool flick_int_enable:1;
+ bool press_int_enable:1;
+ bool pinch_int_enable:1;
+ } __attribute__((__packed__));
+ u8 reg;
+};
+
+/**
+ * @palm_detect_int_enable - enable palm detection feature.
+ * @rotate_int_enable - enable rotate gesture detection.
+ * @touch_shape_int_enable - enable the TouchShape feature.
+ * @scroll_zone_int_enable - enable scroll zone reporting.
+ * @multi_finger_scroll_int_enable - enable the multfinger scroll feature.
+ */
+union f11_2d_ctrl11 {
+ struct {
+ bool palm_detect_int_enable:1;
+ bool rotate_int_enable:1;
+ bool touch_shape_int_enable:1;
+ bool scroll_zone_int_enable:1;
+ bool multi_finger_scroll_int_enable:1;
+ } __attribute__((__packed__));
+ u8 reg;
+};
+
+union f11_2d_ctrl12 {
+ struct {
+ u8 sensor_map:7;
+ bool xy_sel:1;
+ } __attribute__((__packed__));
+ u8 reg;
+};
+
+/**
+ * @sens_adjustment - allows a host to alter the overall sensitivity of a
+ * 2-D sensor. A positive value in this register will make the sensor more
+ * sensitive than the factory defaults, and a negative value will make it
+ * less sensitive.
+ * @hyst_adjustment - increase the touch/no-touch hysteresis by 2 Z-units for
+ * each one unit increment in this setting.
+ */
+union f11_2d_ctrl14 {
+ struct {
+ s8 sens_adjustment:5;
+ u8 hyst_adjustment:3;
+ } __attribute__((__packed__));
+ u8 reg;
+};
+
+/**
+ * @max_tap_time - the maximum duration of a tap, in 10-millisecond units.
+ */
+union f11_2d_ctrl15 {
+ struct {
+ u8 max_tap_time:8;
+ } __attribute__((__packed__));
+ u8 reg;
+};
+
+/**
+ * @min_press_time - The minimum duration required for stationary finger(s) to
+ * generate a press gesture, in 10-millisecond units.
+ */
+union f11_2d_ctrl16 {
+ struct {
+ u8 min_press_time:8;
+ } __attribute__((__packed__));
+ u8 reg;
+};
+
+/**
+ * @max_tap_distance - Determines the maximum finger movement allowed during
+ * a tap, in 0.1-millimeter units.
+ */
+union f11_2d_ctrl17 {
+ struct {
+ u8 max_tap_distance:8;
+ } __attribute__((__packed__));
+ u8 reg;
+};
+
+/**
+ * @min_flick_distance - the minimum finger movement for a flick gesture,
+ * in 1-millimeter units.
+ * @min_flick_speed - the minimum finger speed for a flick gesture, in
+ * 10-millimeter/second units.
+ */
+union f11_2d_ctrl18_19 {
+ struct {
+ u8 min_flick_distance:8;
+ u8 min_flick_speed:8;
+ } __attribute__((__packed__));
+ u8 reg[2];
+};
+
+/**
+ * @pen_detect_enable - enable reporting of stylus activity.
+ * @pen_jitter_filter_enable - Setting this enables the stylus anti-jitter
+ * filter.
+ * @pen_z_threshold - This is the stylus-detection lower threshold. Smaller
+ * values result in higher sensitivity.
+ */
+union f11_2d_ctrl20_21 {
+ struct {
+ bool pen_detect_enable:1;
+ bool pen_jitter_filter_enable:1;
+ u8 ctrl20_reserved:6;
+ u8 pen_z_threshold:8;
+ } __attribute__((__packed__));
+ u8 reg[2];
+};
+
+/**
+ * These are not accessible through sysfs yet.
+ *
+ * @proximity_detect_int_en - enable proximity detection feature.
+ * @proximity_jitter_filter_en - enables an anti-jitter filter on proximity
+ * data.
+ * @proximity_detection_z_threshold - the threshold for finger-proximity
+ * detection.
+ * @proximity_delta_x_threshold - In reduced-reporting modes, this is the
+ * threshold for proximate-finger movement in the direction parallel to the
+ * X-axis.
+ * @proximity_delta_y_threshold - In reduced-reporting modes, this is the
+ * threshold for proximate-finger movement in the direction parallel to the
+ * Y-axis.
+ * * @proximity_delta_Z_threshold - In reduced-reporting modes, this is the
+ * threshold for proximate-finger movement in the direction parallel to the
+ * Z-axis.
+ */
+union f11_2d_ctrl22_26 {
+ struct {
+ /* control 22 */
+ bool proximity_detect_int_en:1;
+ bool proximity_jitter_filter_en:1;
+ u8 f11_2d_ctrl6_b3__7:6;
+
+ /* control 23 */
+ u8 proximity_detection_z_threshold;
+
+ /* control 24 */
+ u8 proximity_delta_x_threshold;
+
+ /* control 25 */
+ u8 proximity_delta_y_threshold;
+
+ /* control 26 */
+ u8 proximity_delta_z_threshold;
+ } __attribute__((__packed__));
+ u8 regs[5];
+};
+
+/**
+ * @palm_detecy_sensitivity - When this value is small, smaller objects will
+ * be identified as palms; when this value is large, only larger objects will
+ * be identified as palms. 0 represents the factory default.
+ * @suppress_on_palm_detect - when set, all F11 interrupts except palm_detect
+ * are suppressed while a palm is detected.
+ */
+union f11_2d_ctrl27 {
+ struct {
+ s8 palm_detect_sensitivity:4;
+ bool suppress_on_palm_detect:1;
+ u8 f11_2d_ctrl27_b5__7:3;
+ } __attribute__((__packed__));
+ u8 regs[1];
+};
+
+/**
+ * @multi_finger_scroll_mode - allows choice of multi-finger scroll mode and
+ * determines whether and how X or Y displacements are reported.
+ * @edge_motion_en - enables the edge_motion feature.
+ * @multi_finger_scroll_momentum - controls the length of time that scrolling
+ * continues after fingers have been lifted.
+ */
+union f11_2d_ctrl28 {
+ struct {
+ u8 multi_finger_scroll_mode:2;
+ bool edge_motion_en:1;
+ bool f11_2d_ctrl28b_3:1;
+ u8 multi_finger_scroll_momentum:4;
+ } __attribute__((__packed__));
+ u8 regs[1];
+};
+
+/**
+ * @z_touch_threshold - Specifies the finger-arrival Z threshold. Large values
+ * may cause smaller fingers to be rejected.
+ * @z_touch_hysteresis - Specifies the difference between the finger-arrival
+ * Z threshold and the finger-departure Z threshold.
+ */
+union f11_2d_ctrl29_30 {
+ struct {
+ u8 z_touch_threshold;
+ u8 z_touch_hysteresis;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[2];
+ u16 address;
+ } __attribute__((__packed__));
+};
+
+
+struct f11_2d_ctrl {
+ union f11_2d_ctrl0_9 *ctrl0_9;
+ union f11_2d_ctrl10 *ctrl10;
+ union f11_2d_ctrl11 *ctrl11;
+ union f11_2d_ctrl12 *ctrl12;
+ u8 ctrl12_size;
+ union f11_2d_ctrl14 *ctrl14;
+ union f11_2d_ctrl15 *ctrl15;
+ union f11_2d_ctrl16 *ctrl16;
+ union f11_2d_ctrl17 *ctrl17;
+ union f11_2d_ctrl18_19 *ctrl18_19;
+ union f11_2d_ctrl20_21 *ctrl20_21;
+ union f11_2d_ctrl22_26 *ctrl22_26;
+ union f11_2d_ctrl27 *ctrl27;
+ union f11_2d_ctrl28 *ctrl28;
+ union f11_2d_ctrl29_30 *ctrl29_30;
+};
+
+/**
+ * @x_msb - top 8 bits of X finger position.
+ * @y_msb - top 8 bits of Y finger position.
+ * @x_lsb - bottom 4 bits of X finger position.
+ * @y_lsb - bottom 4 bits of Y finger position.
+ * @w_y - contact patch width along Y axis.
+ * @w_x - contact patch width along X axis.
+ * @z - finger Z value (proxy for pressure).
+ */
+struct f11_2d_data_1_5 {
+ u8 x_msb;
+ u8 y_msb;
+ u8 x_lsb:4;
+ u8 y_lsb:4;
+ u8 w_y:4;
+ u8 w_x:4;
+ u8 z;
+};
+
+/**
+ * @delta_x - relative motion along X axis.
+ * @delta_y - relative motion along Y axis.
+ */
+struct f11_2d_data_6_7 {
+ s8 delta_x;
+ s8 delta_y;
+};
+
+/**
+ * @single_tap - a single tap was recognized.
+ * @tap_and_hold - a tap-and-hold gesture was recognized.
+ * @double_tap - a double tap gesture was recognized.
+ * @early_tap - a tap gesture might be happening.
+ * @flick - a flick gesture was detected.
+ * @press - a press gesture was recognized.
+ * @pinch - a pinch gesture was detected.
+ */
+struct f11_2d_data_8 {
+ bool single_tap:1;
+ bool tap_and_hold:1;
+ bool double_tap:1;
+ bool early_tap:1;
+ bool flick:1;
+ bool press:1;
+ bool pinch:1;
+};
+
+/**
+ * @palm_detect - a palm or other large object is in contact with the sensor.
+ * @rotate - a rotate gesture was detected.
+ * @shape - a TouchShape has been activated.
+ * @scrollzone - scrolling data is available.
+ * @finger_count - number of fingers involved in the reported gesture.
+ */
+struct f11_2d_data_9 {
+ bool palm_detect:1;
+ bool rotate:1;
+ bool shape:1;
+ bool scrollzone:1;
+ u8 finger_count:3;
+};
+
+/**
+ * @pinch_motion - when a pinch gesture is detected, this is the change in
+ * distance between the two fingers since this register was last read.
+ */
+struct f11_2d_data_10 {
+ s8 pinch_motion;
+};
+
+/**
+ * @x_flick_dist - when a flick gesture is detected, the distance of flick
+ * gesture in X direction.
+ * @y_flick_dist - when a flick gesture is detected, the distance of flick
+ * gesture in Y direction.
+ * @flick_time - the total time of the flick gesture, in 10ms units.
+ */
+struct f11_2d_data_10_12 {
+ s8 x_flick_dist;
+ s8 y_flick_dist;
+ u8 flick_time;
+};
+
+/**
+ * @motion - when a rotate gesture is detected, the accumulated distance
+ * of the rotate motion. Clockwise motion is positive and counterclockwise
+ * motion is negative.
+ * @finger_separation - when a rotate gesture is detected, the distance
+ * between the fingers.
+ */
+struct f11_2d_data_11_12 {
+ s8 motion;
+ u8 finger_separation;
+};
+
+/**
+ * @shape_n - a bitmask of the currently activate TouchShapes (if any).
+ */
+struct f11_2d_data_13 {
+ u8 shape_n;
+};
+
+/**
+ * @horizontal - chiral scrolling distance in the X direction.
+ * @vertical - chiral scrolling distance in the Y direction.
+ */
+struct f11_2d_data_14_15 {
+ s8 horizontal;
+ s8 vertical;
+};
+
+/**
+ * @x_low - scroll zone motion along the lower edge of the sensor.
+ * @y_right - scroll zone motion along the right edge of the sensor.
+ * @x_upper - scroll zone motion along the upper edge of the sensor.
+ * @y_left - scroll zone motion along the left edge of the sensor.
+ */
+struct f11_2d_data_14_17 {
+ s8 x_low;
+ s8 y_right;
+ s8 x_upper;
+ s8 y_left;
+};
+
+struct f11_2d_data {
+ u8 *f_state;
+ const struct f11_2d_data_1_5 *abs_pos;
+ const struct f11_2d_data_6_7 *rel_pos;
+ const struct f11_2d_data_8 *gest_1;
+ const struct f11_2d_data_9 *gest_2;
+ const struct f11_2d_data_10 *pinch;
+ const struct f11_2d_data_10_12 *flick;
+ const struct f11_2d_data_11_12 *rotate;
+ const struct f11_2d_data_13 *shapes;
+ const struct f11_2d_data_14_15 *multi_scroll;
+ const struct f11_2d_data_14_17 *scroll_zones;
+};
+
+struct f11_2d_sensor {
+ struct rmi_f11_2d_axis_alignment axis_align;
+ struct f11_2d_sensor_query sens_query;
+ struct f11_2d_data data;
+ int prev_x[F11_MAX_NUM_OF_FINGERS];
+ int prev_y[F11_MAX_NUM_OF_FINGERS];
+ u16 max_x;
+ u16 max_y;
+ u8 nbr_fingers;
+ u8 finger_tracker[F11_MAX_NUM_OF_FINGERS];
+ u8 *data_pkt;
+ int pkt_size;
+ u8 sensor_index;
+ u8 *button_map;
+ struct rmi_f11_virtualbutton_map virtual_buttons;
+ bool type_a;
+ char input_name[MAX_NAME_LENGTH];
+ char input_phys[MAX_NAME_LENGTH];
+ struct input_dev *input;
+ struct input_dev *mouse_input;
+ struct rmi_function_container *fc;
+
+#ifdef CONFIG_RMI4_DEBUG
+ struct dentry *debugfs_flip;
+ struct dentry *debugfs_clip;
+ struct dentry *debugfs_delta_threshold;
+ struct dentry *debugfs_offset;
+ struct dentry *debugfs_swap;
+ struct dentry *debugfs_type_a;
+#endif
+};
+
+struct f11_data {
+ struct f11_2d_device_query dev_query;
+ struct f11_2d_ctrl dev_controls;
+ struct mutex dev_controls_mutex;
+ u16 rezero_wait_ms;
+ struct f11_2d_sensor sensors[F11_MAX_NUM_OF_SENSORS];
+
+#ifdef CONFIG_RMI4_DEBUG
+ struct dentry *debugfs_rezero_wait;
+#endif
+};
+
+enum finger_state_values {
+ F11_NO_FINGER = 0x00,
+ F11_PRESENT = 0x01,
+ F11_INACCURATE = 0x02,
+ F11_RESERVED = 0x03
+};
+
+/* ctrl sysfs files */
+show_store_union_struct_prototype(abs_pos_filt)
+show_store_union_struct_prototype(z_touch_threshold)
+show_store_union_struct_prototype(z_touch_hysteresis)
+
+#ifdef CONFIG_RMI4_DEBUG
+
+struct sensor_debugfs_data {
+ bool done;
+ struct f11_2d_sensor *sensor;
+};
+
+static int sensor_debug_open(struct inode *inodep, struct file *filp)
+{
+ struct sensor_debugfs_data *data;
+ struct f11_2d_sensor *sensor = inodep->i_private;
+ struct rmi_function_container *fc = sensor->fc;
+
+ data = devm_kzalloc(&fc->dev, sizeof(struct sensor_debugfs_data),
+ GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->sensor = sensor;
+ filp->private_data = data;
+ return 0;
+}
+
+static ssize_t flip_read(struct file *filp, char __user *buffer, size_t size,
+ loff_t *offset) {
+ int retval;
+ char local_buf[size];
+ struct sensor_debugfs_data *data = filp->private_data;
+
+ if (data->done)
+ return 0;
+
+ data->done = 1;
+
+ retval = snprintf(local_buf, size, "%u %u\n",
+ data->sensor->axis_align.flip_x,
+ data->sensor->axis_align.flip_y);
+
+ if (retval <= 0 || copy_to_user(buffer, local_buf, retval))
+ return -EFAULT;
+
+ return retval;
+}
+
+static ssize_t flip_write(struct file *filp, const char __user *buffer,
+ size_t size, loff_t *offset) {
+ int retval;
+ char local_buf[size];
+ unsigned int new_X;
+ unsigned int new_Y;
+ struct sensor_debugfs_data *data = filp->private_data;
+
+ retval = copy_from_user(local_buf, buffer, size);
+ if (retval)
+ return -EFAULT;
+
+ retval = sscanf(local_buf, "%u %u", &new_X, &new_Y);
+ if (retval != 2 || new_X > 1 || new_Y > 1)
+ return -EINVAL;
+
+ data->sensor->axis_align.flip_x = new_X;
+ data->sensor->axis_align.flip_y = new_Y;
+
+ return size;
+}
+
+static const struct file_operations flip_fops = {
+ .owner = THIS_MODULE,
+ .open = sensor_debug_open,
+ .read = flip_read,
+ .write = flip_write,
+};
+
+
+static ssize_t delta_threshold_read(struct file *filp, char __user *buffer,
+ size_t size, loff_t *offset) {
+ int retval;
+ char local_buf[size];
+ struct sensor_debugfs_data *data = filp->private_data;
+ struct f11_data *f11 = data->sensor->fc->data;
+ struct f11_2d_ctrl *ctrl = &f11->dev_controls;
+
+ if (data->done)
+ return 0;
+
+ data->done = 1;
+
+ retval = snprintf(local_buf, size, "%u %u\n",
+ ctrl->ctrl0_9->delta_x_threshold,
+ ctrl->ctrl0_9->delta_y_threshold);
+
+ if (retval <= 0 || copy_to_user(buffer, local_buf, retval))
+ return -EFAULT;
+
+ return retval;
+}
+
+static ssize_t delta_threshold_write(struct file *filp,
+ const char __user *buffer, size_t size, loff_t *offset) {
+ int retval;
+ char local_buf[size];
+ unsigned int new_X, new_Y;
+ u8 save_X, save_Y;
+ int rc;
+ struct sensor_debugfs_data *data = filp->private_data;
+ struct f11_data *f11 = data->sensor->fc->data;
+ struct f11_2d_ctrl *ctrl = &f11->dev_controls;
+ struct rmi_device *rmi_dev = data->sensor->fc->rmi_dev;
+
+ retval = copy_from_user(local_buf, buffer, size);
+ if (retval)
+ return -EFAULT;
+
+ retval = sscanf(local_buf, "%u %u", &new_X, &new_Y);
+ if (retval != 2 || new_X > 1 || new_Y > 1)
+ return -EINVAL;
+
+ save_X = ctrl->ctrl0_9->delta_x_threshold;
+ save_Y = ctrl->ctrl0_9->delta_y_threshold;
+
+ ctrl->ctrl0_9->delta_x_threshold = new_X;
+ ctrl->ctrl0_9->delta_y_threshold = new_Y;
+ rc = rmi_write_block(rmi_dev,
+ ctrl->ctrl0_9->address,
+ ctrl->ctrl0_9->regs,
+ sizeof(ctrl->ctrl0_9->regs));
+ if (rc < 0) {
+ dev_warn(&data->sensor->fc->dev,
+ "Failed to write to delta_threshold. Code: %d.\n",
+ rc);
+ ctrl->ctrl0_9->delta_x_threshold = save_X;
+ ctrl->ctrl0_9->delta_y_threshold = save_Y;
+ }
+ return size;
+}
+
+static const struct file_operations delta_threshold_fops = {
+ .owner = THIS_MODULE,
+ .open = sensor_debug_open,
+ .read = delta_threshold_read,
+ .write = delta_threshold_write,
+};
+
+static ssize_t offset_read(struct file *filp, char __user *buffer, size_t size,
+ loff_t *offset) {
+ int retval;
+ char local_buf[size];
+ struct sensor_debugfs_data *data = filp->private_data;
+
+ if (data->done)
+ return 0;
+
+ data->done = 1;
+ retval = snprintf(local_buf, size, "%u %u\n",
+ data->sensor->axis_align.offset_X,
+ data->sensor->axis_align.offset_Y);
+
+ if (retval <= 0 || copy_to_user(buffer, local_buf, retval))
+ return -EFAULT;
+
+ return retval;
+}
+
+static ssize_t offset_write(struct file *filp, const char __user *buffer,
+ size_t size, loff_t *offset)
+{
+ int retval;
+ char local_buf[size];
+ int new_X;
+ int new_Y;
+ struct sensor_debugfs_data *data = filp->private_data;
+
+ retval = copy_from_user(local_buf, buffer, size);
+ if (retval)
+ return -EFAULT;
+ retval = sscanf(local_buf, "%u %u", &new_X, &new_Y);
+ if (retval != 2)
+ return -EINVAL;
+
+ data->sensor->axis_align.offset_X = new_X;
+ data->sensor->axis_align.offset_Y = new_Y;
+
+ return size;
+}
+
+static const struct file_operations offset_fops = {
+ .owner = THIS_MODULE,
+ .open = sensor_debug_open,
+ .read = offset_read,
+ .write = offset_write,
+};
+
+static ssize_t clip_read(struct file *filp, char __user *buffer, size_t size,
+ loff_t *offset) {
+ int retval;
+ char local_buf[size];
+ struct sensor_debugfs_data *data = filp->private_data;
+
+ if (data->done)
+ return 0;
+
+ data->done = 1;
+
+ retval = snprintf(local_buf, size, "%u %u %u %u\n",
+ data->sensor->axis_align.clip_X_low,
+ data->sensor->axis_align.clip_X_high,
+ data->sensor->axis_align.clip_Y_low,
+ data->sensor->axis_align.clip_Y_high);
+
+ if (retval <= 0 || copy_to_user(buffer, local_buf, retval))
+ return -EFAULT;
+
+ return retval;
+}
+
+static ssize_t clip_write(struct file *filp, const char __user *buffer,
+ size_t size, loff_t *offset)
+{
+ int retval;
+ char local_buf[size];
+ unsigned int new_X_low, new_X_high, new_Y_low, new_Y_high;
+ struct sensor_debugfs_data *data = filp->private_data;
+
+ retval = copy_from_user(local_buf, buffer, size);
+ if (retval)
+ return -EFAULT;
+
+ retval = sscanf(local_buf, "%u %u %u %u",
+ &new_X_low, &new_X_high, &new_Y_low, &new_Y_high);
+ if (retval != 4)
+ return -EINVAL;
+
+ if (new_X_low >= new_X_high || new_Y_low >= new_Y_high)
+ return -EINVAL;
+
+ data->sensor->axis_align.clip_X_low = new_X_low;
+ data->sensor->axis_align.clip_X_high = new_X_high;
+ data->sensor->axis_align.clip_Y_low = new_Y_low;
+ data->sensor->axis_align.clip_Y_high = new_Y_high;
+
+ return size;
+}
+
+static const struct file_operations clip_fops = {
+ .owner = THIS_MODULE,
+ .open = sensor_debug_open,
+ .read = clip_read,
+ .write = clip_write,
+};
+
+static ssize_t swap_read(struct file *filp, char __user *buffer, size_t size,
+ loff_t *offset) {
+ int retval;
+ char local_buf[size];
+ struct sensor_debugfs_data *data = filp->private_data;
+
+ if (data->done)
+ return 0;
+
+ data->done = 1;
+
+ retval = snprintf(local_buf, size, "%u\n",
+ data->sensor->axis_align.swap_axes);
+
+ if (retval <= 0 || copy_to_user(buffer, local_buf, retval))
+ return -EFAULT;
+
+ return retval;
+}
+
+static ssize_t swap_write(struct file *filp, const char __user *buffer,
+ size_t size, loff_t *offset)
+{
+ int retval;
+ char local_buf[size];
+ int new_value;
+ struct sensor_debugfs_data *data = filp->private_data;
+
+ retval = copy_from_user(local_buf, buffer, size);
+ if (retval)
+ return -EFAULT;
+ retval = sscanf(local_buf, "%u", &new_value);
+ if (retval != 1 || new_value > 1)
+ return -EINVAL;
+
+ data->sensor->axis_align.swap_axes = new_value;
+ return size;
+}
+
+static const struct file_operations swap_fops = {
+ .owner = THIS_MODULE,
+ .open = sensor_debug_open,
+ .read = swap_read,
+ .write = swap_write,
+};
+
+static ssize_t type_a_read(struct file *filp, char __user *buffer, size_t size,
+ loff_t *offset) {
+ int retval;
+ char local_buf[size];
+ struct sensor_debugfs_data *data = filp->private_data;
+
+ if (data->done)
+ return 0;
+
+ data->done = 1;
+
+ retval = snprintf(local_buf, size, "%u\n",
+ data->sensor->type_a);
+
+ if (retval <= 0 || copy_to_user(buffer, local_buf, retval))
+ return -EFAULT;
+
+ return retval;
+}
+
+static ssize_t type_a_write(struct file *filp, const char __user *buffer,
+ size_t size, loff_t *offset)
+{
+ int retval;
+ char local_buf[size];
+ int new_value;
+ struct sensor_debugfs_data *data = filp->private_data;
+
+ retval = copy_from_user(local_buf, buffer, size);
+ if (retval)
+ return -EFAULT;
+ retval = sscanf(local_buf, "%u", &new_value);
+ if (retval != 1 || new_value > 1)
+ return -EINVAL;
+
+ data->sensor->type_a = new_value;
+ return size;
+}
+
+static const struct file_operations type_a_fops = {
+ .owner = THIS_MODULE,
+ .open = sensor_debug_open,
+ .read = type_a_read,
+ .write = type_a_write,
+};
+
+
+static int setup_sensor_debugfs(struct f11_2d_sensor *sensor)
+{
+ int retval = 0;
+ char fname[MAX_NAME_LENGTH];
+ struct rmi_function_container *fc = sensor->fc;
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+
+ if (!fc->debugfs_root)
+ return -ENODEV;
+
+ retval = snprintf(fname, MAX_NAME_LENGTH, "flip.%d",
+ sensor->sensor_index);
+ sensor->debugfs_flip = debugfs_create_file(fname, RMI_RW_ATTR,
+ fc->debugfs_root, sensor, &flip_fops);
+ if (!sensor->debugfs_flip)
+ dev_warn(&rmi_dev->dev, "Failed to create debugfs %s.\n",
+ fname);
+
+ retval = snprintf(fname, MAX_NAME_LENGTH, "clip.%d",
+ sensor->sensor_index);
+ sensor->debugfs_clip = debugfs_create_file(fname, RMI_RW_ATTR,
+ fc->debugfs_root, sensor, &clip_fops);
+ if (!sensor->debugfs_clip)
+ dev_warn(&rmi_dev->dev, "Failed to create debugfs %s.\n",
+ fname);
+
+ retval = snprintf(fname, MAX_NAME_LENGTH, "delta_threshold.%d",
+ sensor->sensor_index);
+ sensor->debugfs_clip = debugfs_create_file(fname, RMI_RW_ATTR,
+ fc->debugfs_root, sensor,
+ &delta_threshold_fops);
+ if (!sensor->debugfs_delta_threshold)
+ dev_warn(&rmi_dev->dev, "Failed to create debugfs %s.\n",
+ fname);
+
+ retval = snprintf(fname, MAX_NAME_LENGTH, "offset.%d",
+ sensor->sensor_index);
+ sensor->debugfs_offset = debugfs_create_file(fname, RMI_RW_ATTR,
+ fc->debugfs_root, sensor, &offset_fops);
+ if (!sensor->debugfs_offset)
+ dev_warn(&rmi_dev->dev, "Failed to create debugfs %s.\n",
+ fname);
+
+ retval = snprintf(fname, MAX_NAME_LENGTH, "swap.%d",
+ sensor->sensor_index);
+ sensor->debugfs_swap = debugfs_create_file(fname, RMI_RW_ATTR,
+ fc->debugfs_root, sensor, &swap_fops);
+ if (!sensor->debugfs_swap)
+ dev_warn(&rmi_dev->dev, "Failed to create debugfs %s.\n",
+ fname);
+
+ retval = snprintf(fname, MAX_NAME_LENGTH, "type_a.%d",
+ sensor->sensor_index);
+ sensor->debugfs_type_a = debugfs_create_file(fname, RMI_RW_ATTR,
+ fc->debugfs_root, sensor, &type_a_fops);
+ if (!sensor->debugfs_type_a)
+ dev_warn(&rmi_dev->dev, "Failed to create debugfs %s.\n",
+ fname);
+
+ return retval;
+}
+
+static void teardown_sensor_debugfs(struct f11_2d_sensor *sensor)
+{
+ if (sensor->debugfs_flip)
+ debugfs_remove(sensor->debugfs_flip);
+
+ if (sensor->debugfs_clip)
+ debugfs_remove(sensor->debugfs_clip);
+
+ if (sensor->debugfs_offset)
+ debugfs_remove(sensor->debugfs_offset);
+
+ if (sensor->debugfs_swap)
+ debugfs_remove(sensor->debugfs_swap);
+
+ if (sensor->debugfs_type_a)
+ debugfs_remove(sensor->debugfs_type_a);
+}
+
+struct f11_debugfs_data {
+ bool done;
+ struct rmi_function_container *fc;
+};
+
+static int f11_debug_open(struct inode *inodep, struct file *filp)
+{
+ struct f11_debugfs_data *data;
+ struct rmi_function_container *fc = inodep->i_private;
+
+ data = devm_kzalloc(&fc->dev, sizeof(struct f11_debugfs_data),
+ GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->fc = fc;
+ filp->private_data = data;
+ return 0;
+}
+
+static ssize_t rezero_wait_read(struct file *filp, char __user *buffer,
+ size_t size, loff_t *offset) {
+ int retval;
+ char local_buf[size];
+ struct f11_debugfs_data *data = filp->private_data;
+ struct f11_data *f11 = data->fc->data;
+
+ if (data->done)
+ return 0;
+
+ data->done = 1;
+
+ retval = snprintf(local_buf, size, "%u\n", f11->rezero_wait_ms);
+
+ if (retval <= 0 || copy_to_user(buffer, local_buf, retval))
+ return -EFAULT;
+
+ return retval;
+}
+
+static ssize_t rezero_wait_write(struct file *filp, const char __user *buffer,
+ size_t size, loff_t *offset)
+{
+ int retval;
+ char local_buf[size];
+ int new_value;
+ struct f11_debugfs_data *data = filp->private_data;
+ struct f11_data *f11 = data->fc->data;
+
+ retval = copy_from_user(local_buf, buffer, size);
+ if (retval)
+ return -EFAULT;
+ retval = sscanf(local_buf, "%u", &new_value);
+ if (retval != 1 || new_value > 65535)
+ return -EINVAL;
+
+ f11->rezero_wait_ms = new_value;
+ return size;
+}
+
+static const struct file_operations rezero_wait_fops = {
+ .owner = THIS_MODULE,
+ .open = f11_debug_open,
+ .read = rezero_wait_read,
+ .write = rezero_wait_write,
+};
+
+static int setup_f11_debugfs(struct rmi_function_container *fc)
+{
+ struct f11_data *f11 = fc->data;
+
+ if (!fc->debugfs_root)
+ return -ENODEV;
+
+ f11->debugfs_rezero_wait = debugfs_create_file("rezero_wait",
+ RMI_RW_ATTR, fc->debugfs_root, fc, &rezero_wait_fops);
+ if (!f11->debugfs_rezero_wait)
+ dev_warn(&fc->dev,
+ "Failed to create debugfs rezero_wait.\n");
+
+ return 0;
+}
+
+static void teardown_f11_debugfs(struct f11_data *f11)
+{
+ if (f11->debugfs_rezero_wait)
+ debugfs_remove(f11->debugfs_rezero_wait);
+}
+#endif
+/* End adding debugfs */
+
+/* This is a group in case we add the other ctrls. */
+static struct attribute *attrs_ctrl0[] = {
+ attrify(abs_pos_filt),
+ NULL
+};
+static struct attribute_group attrs_control0 = GROUP(attrs_ctrl0);
+
+static struct attribute *attrs_ctrl29_30[] = {
+ attrify(z_touch_threshold),
+ attrify(z_touch_hysteresis),
+ NULL
+};
+static struct attribute_group attrs_control29_30 = GROUP(attrs_ctrl29_30);
+
+/** F11_INACCURATE state is overloaded to indicate pen present. */
+#define F11_PEN F11_INACCURATE
+
+static int get_tool_type(struct f11_2d_sensor *sensor, u8 finger_state)
+{
+ if (IS_ENABLED(CONFIG_RMI4_F11_PEN) &&
+ sensor->sens_query.query9.has_pen &&
+ finger_state == F11_PEN)
+ return MT_TOOL_PEN;
+ return MT_TOOL_FINGER;
+}
+
+static void rmi_f11_rel_pos_report(struct f11_2d_sensor *sensor, u8 n_finger)
+{
+ struct f11_2d_data *data = &sensor->data;
+ struct rmi_f11_2d_axis_alignment *axis_align = &sensor->axis_align;
+ s8 x, y;
+ s8 temp;
+
+ x = data->rel_pos[n_finger].delta_x;
+ y = data->rel_pos[n_finger].delta_y;
+
+ x = min(F11_REL_POS_MAX, max(F11_REL_POS_MIN, (int)x));
+ y = min(F11_REL_POS_MAX, max(F11_REL_POS_MIN, (int)y));
+
+ if (axis_align->swap_axes) {
+ temp = x;
+ x = y;
+ y = temp;
+ }
+ if (axis_align->flip_x)
+ x = min(F11_REL_POS_MAX, -x);
+ if (axis_align->flip_y)
+ y = min(F11_REL_POS_MAX, -y);
+
+ if (x || y) {
+ input_report_rel(sensor->input, REL_X, x);
+ input_report_rel(sensor->input, REL_Y, y);
+ input_report_rel(sensor->mouse_input, REL_X, x);
+ input_report_rel(sensor->mouse_input, REL_Y, y);
+ }
+ input_sync(sensor->mouse_input);
+}
+
+static void rmi_f11_abs_pos_report(struct f11_data *f11,
+ struct f11_2d_sensor *sensor,
+ u8 finger_state, u8 n_finger)
+{
+ struct f11_2d_data *data = &sensor->data;
+ struct rmi_f11_2d_axis_alignment *axis_align = &sensor->axis_align;
+ u8 prev_state = sensor->finger_tracker[n_finger];
+ int x, y, z;
+ int w_x, w_y, w_max, w_min, orient;
+ int temp;
+
+ if (prev_state && !finger_state) {
+ /* this is a release */
+ x = y = z = w_max = w_min = orient = 0;
+ } else if (!prev_state && !finger_state) {
+ /* nothing to report */
+ return;
+ } else {
+ x = ((data->abs_pos[n_finger].x_msb << 4) |
+ data->abs_pos[n_finger].x_lsb);
+ y = ((data->abs_pos[n_finger].y_msb << 4) |
+ data->abs_pos[n_finger].y_lsb);
+ z = data->abs_pos[n_finger].z;
+ w_x = data->abs_pos[n_finger].w_x;
+ w_y = data->abs_pos[n_finger].w_y;
+ w_max = max(w_x, w_y);
+ w_min = min(w_x, w_y);
+
+ if (axis_align->swap_axes) {
+ temp = x;
+ x = y;
+ y = temp;
+ temp = w_x;
+ w_x = w_y;
+ w_y = temp;
+ }
+
+ orient = w_x > w_y ? 1 : 0;
+
+ if (axis_align->flip_x)
+ x = max(sensor->max_x - x, 0);
+
+ if (axis_align->flip_y)
+ y = max(sensor->max_y - y, 0);
+
+ /*
+ ** here checking if X offset or y offset are specified is
+ ** redundant. We just add the offsets or, clip the values
+ **
+ ** note: offsets need to be done before clipping occurs,
+ ** or we could get funny values that are outside
+ ** clipping boundaries.
+ */
+ x += axis_align->offset_X;
+ y += axis_align->offset_Y;
+ x = max(axis_align->clip_X_low, x);
+ y = max(axis_align->clip_Y_low, y);
+ if (axis_align->clip_X_high)
+ x = min(axis_align->clip_X_high, x);
+ if (axis_align->clip_Y_high)
+ y = min(axis_align->clip_Y_high, y);
+
+ }
+
+ /* Some UIs ignore W of zero, so we fudge it to 1 for pens. */
+ if (IS_ENABLED(CONFIG_RMI4_F11_PEN) &&
+ get_tool_type(sensor, finger_state) == MT_TOOL_PEN) {
+ w_max = max(1, w_max);
+ w_min = max(1, w_min);
+ }
+
+ if (sensor->type_a) {
+ input_report_abs(sensor->input, ABS_MT_TRACKING_ID, n_finger);
+ input_report_abs(sensor->input, ABS_MT_TOOL_TYPE,
+ get_tool_type(sensor, finger_state));
+ } else {
+ input_mt_slot(sensor->input, n_finger);
+ input_mt_report_slot_state(sensor->input,
+ get_tool_type(sensor, finger_state), finger_state);
+ }
+
+ input_report_abs(sensor->input, ABS_MT_PRESSURE, z);
+ input_report_abs(sensor->input, ABS_MT_TOUCH_MAJOR, w_max);
+ input_report_abs(sensor->input, ABS_MT_TOUCH_MINOR, w_min);
+ input_report_abs(sensor->input, ABS_MT_ORIENTATION, orient);
+ input_report_abs(sensor->input, ABS_MT_POSITION_X, x);
+ input_report_abs(sensor->input, ABS_MT_POSITION_Y, y);
+ dev_dbg(&sensor->fc->dev,
+ "finger[%d]:%d - x:%d y:%d z:%d w_max:%d w_min:%d\n",
+ n_finger, finger_state, x, y, z, w_max, w_min);
+ /* MT sync between fingers */
+ if (sensor->type_a)
+ input_mt_sync(sensor->input);
+
+ sensor->finger_tracker[n_finger] = finger_state;
+}
+
+#ifdef CONFIG_RMI4_VIRTUAL_BUTTON
+static int rmi_f11_virtual_button_handler(struct f11_2d_sensor *sensor)
+{
+ int i;
+ int x;
+ int y;
+ struct rmi_button_map *virtualbutton_map;
+
+ if (sensor->sens_query.has_gestures &&
+ sensor->data.gest_1->single_tap) {
+ virtualbutton_map = &sensor->virtualbutton_map;
+ x = ((sensor->data.abs_pos[0].x_msb << 4) |
+ sensor->data.abs_pos[0].x_lsb);
+ y = ((sensor->data.abs_pos[0].y_msb << 4) |
+ sensor->data.abs_pos[0].y_lsb);
+ for (i = 0; i < virtualbutton_map->buttons; i++) {
+ if (INBOX(x, y, virtualbutton_map->map[i])) {
+ input_report_key(sensor->input,
+ virtualbutton_map->map[i].code, 1);
+ input_report_key(sensor->input,
+ virtualbutton_map->map[i].code, 0);
+ input_sync(sensor->input);
+ return 0;
+ }
+ }
+ }
+ return 0;
+}
+#else
+#define rmi_f11_virtual_button_handler(sensor)
+#endif
+static void rmi_f11_finger_handler(struct f11_data *f11,
+ struct f11_2d_sensor *sensor)
+{
+ const u8 *f_state = sensor->data.f_state;
+ u8 finger_state;
+ u8 finger_pressed_count;
+ u8 i;
+
+ for (i = 0, finger_pressed_count = 0; i < sensor->nbr_fingers; i++) {
+ /* Possible of having 4 fingers per f_statet register */
+ finger_state = GET_FINGER_STATE(f_state, i);
+
+ if (finger_state == F11_RESERVED) {
+ pr_err("%s: Invalid finger state[%d]:0x%02x.", __func__,
+ i, finger_state);
+ continue;
+ } else if ((finger_state == F11_PRESENT) ||
+ (finger_state == F11_INACCURATE)) {
+ finger_pressed_count++;
+ }
+
+ if (sensor->data.abs_pos)
+ rmi_f11_abs_pos_report(f11, sensor, finger_state, i);
+
+ if (sensor->data.rel_pos)
+ rmi_f11_rel_pos_report(sensor, i);
+ }
+ input_report_key(sensor->input, BTN_TOUCH, finger_pressed_count);
+ input_sync(sensor->input);
+}
+
+static int f11_2d_construct_data(struct f11_2d_sensor *sensor)
+{
+ struct f11_2d_sensor_query *query = &sensor->sens_query;
+ struct f11_2d_data *data = &sensor->data;
+ int i;
+
+ sensor->nbr_fingers = (query->number_of_fingers == 5 ? 10 :
+ query->number_of_fingers + 1);
+
+ sensor->pkt_size = F11_CEIL(sensor->nbr_fingers, 4);
+
+ if (query->has_abs)
+ sensor->pkt_size += (sensor->nbr_fingers * 5);
+
+ if (query->has_rel)
+ sensor->pkt_size += (sensor->nbr_fingers * 2);
+
+ /* Check if F11_2D_Query7 is non-zero */
+ if (query->f11_2d_query7__8[0])
+ sensor->pkt_size += sizeof(u8);
+
+ /* Check if F11_2D_Query7 or F11_2D_Query8 is non-zero */
+ if (query->f11_2d_query7__8[0] || query->f11_2d_query7__8[1])
+ sensor->pkt_size += sizeof(u8);
+
+ if (query->has_pinch || query->has_flick || query->has_rotate) {
+ sensor->pkt_size += 3;
+ if (!query->has_flick)
+ sensor->pkt_size--;
+ if (!query->has_rotate)
+ sensor->pkt_size--;
+ }
+
+ if (query->has_touch_shapes)
+ sensor->pkt_size += F11_CEIL(query->nbr_touch_shapes + 1, 8);
+
+ sensor->data_pkt = kzalloc(sensor->pkt_size, GFP_KERNEL);
+ if (!sensor->data_pkt)
+ return -ENOMEM;
+
+ data->f_state = sensor->data_pkt;
+ i = F11_CEIL(sensor->nbr_fingers, 4);
+
+ if (query->has_abs) {
+ data->abs_pos = (struct f11_2d_data_1_5 *)
+ &sensor->data_pkt[i];
+ i += (sensor->nbr_fingers * 5);
+ }
+
+ if (query->has_rel) {
+ data->rel_pos = (struct f11_2d_data_6_7 *)
+ &sensor->data_pkt[i];
+ i += (sensor->nbr_fingers * 2);
+ }
+
+ if (query->f11_2d_query7__8[0]) {
+ data->gest_1 = (struct f11_2d_data_8 *)&sensor->data_pkt[i];
+ i++;
+ }
+
+ if (query->f11_2d_query7__8[0] || query->f11_2d_query7__8[1]) {
+ data->gest_2 = (struct f11_2d_data_9 *)&sensor->data_pkt[i];
+ i++;
+ }
+
+ if (query->has_pinch) {
+ data->pinch = (struct f11_2d_data_10 *)&sensor->data_pkt[i];
+ i++;
+ }
+
+ if (query->has_flick) {
+ if (query->has_pinch) {
+ data->flick = (struct f11_2d_data_10_12 *)data->pinch;
+ i += 2;
+ } else {
+ data->flick = (struct f11_2d_data_10_12 *)
+ &sensor->data_pkt[i];
+ i += 3;
+ }
+ }
+
+ if (query->has_rotate) {
+ if (query->has_flick) {
+ data->rotate = (struct f11_2d_data_11_12 *)
+ (data->flick + 1);
+ } else {
+ data->rotate = (struct f11_2d_data_11_12 *)
+ &sensor->data_pkt[i];
+ i += 2;
+ }
+ }
+
+ if (query->has_touch_shapes)
+ data->shapes = (struct f11_2d_data_13 *)&sensor->data_pkt[i];
+
+ return 0;
+}
+
+static int f11_read_control_regs(struct rmi_device *rmi_dev,
+ struct f11_2d_ctrl *ctrl,
+ u16 ctrl_base_addr) {
+ u16 read_address = ctrl_base_addr;
+ int error = 0;
+
+ ctrl->ctrl0_9->address = read_address;
+ error = rmi_read_block(rmi_dev, read_address, ctrl->ctrl0_9->regs,
+ sizeof(ctrl->ctrl0_9->regs));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl0, code: %d.\n", error);
+ return error;
+ }
+ read_address = read_address + sizeof(ctrl->ctrl0_9->regs);
+
+ if (ctrl->ctrl10) {
+ error = rmi_read_block(rmi_dev, read_address,
+ &ctrl->ctrl10->reg, sizeof(union f11_2d_ctrl10));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl10, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl10);
+ }
+
+ if (ctrl->ctrl11) {
+ error = rmi_read_block(rmi_dev, read_address,
+ &ctrl->ctrl11->reg, sizeof(union f11_2d_ctrl11));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl11, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl11);
+ }
+
+ if (ctrl->ctrl14) {
+ error = rmi_read_block(rmi_dev, read_address,
+ &ctrl->ctrl14->reg, sizeof(union f11_2d_ctrl14));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl14, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl14);
+ }
+
+ if (ctrl->ctrl15) {
+ error = rmi_read_block(rmi_dev, read_address,
+ &ctrl->ctrl15->reg, sizeof(union f11_2d_ctrl15));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl15, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl15);
+ }
+
+ if (ctrl->ctrl16) {
+ error = rmi_read_block(rmi_dev, read_address,
+ &ctrl->ctrl16->reg, sizeof(union f11_2d_ctrl16));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl16, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl16);
+ }
+
+ if (ctrl->ctrl17) {
+ error = rmi_read_block(rmi_dev, read_address,
+ &ctrl->ctrl17->reg, sizeof(union f11_2d_ctrl17));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl17, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl17);
+ }
+
+ if (ctrl->ctrl18_19) {
+ error = rmi_read_block(rmi_dev, read_address,
+ ctrl->ctrl18_19->reg, sizeof(union f11_2d_ctrl18_19));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl18_19, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl18_19);
+ }
+
+ if (ctrl->ctrl20_21) {
+ error = rmi_read_block(rmi_dev, read_address,
+ ctrl->ctrl20_21->reg, sizeof(union f11_2d_ctrl20_21));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl20_21, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl20_21);
+ }
+
+ if (ctrl->ctrl22_26) {
+ error = rmi_read_block(rmi_dev, read_address,
+ ctrl->ctrl22_26->regs, sizeof(union f11_2d_ctrl22_26));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl22_26, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl22_26);
+ }
+
+ if (ctrl->ctrl27) {
+ error = rmi_read_block(rmi_dev, read_address,
+ ctrl->ctrl27->regs, sizeof(union f11_2d_ctrl27));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl27, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl27);
+ }
+
+ if (ctrl->ctrl28) {
+ error = rmi_read_block(rmi_dev, read_address,
+ ctrl->ctrl28->regs, sizeof(union f11_2d_ctrl28));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl28, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(union f11_2d_ctrl28);
+ }
+
+ if (ctrl->ctrl29_30) {
+ ctrl->ctrl29_30->address = read_address;
+ error = rmi_read_block(rmi_dev, read_address,
+ ctrl->ctrl29_30->regs, sizeof(ctrl->ctrl29_30->regs));
+ if (error < 0) {
+ dev_err(&rmi_dev->dev,
+ "Failed to read F11 ctrl29_30, code: %d.\n",
+ error);
+ return error;
+ }
+ read_address = read_address + sizeof(ctrl->ctrl29_30->regs);
+ }
+ return 0;
+}
+
+static int f11_allocate_control_regs(struct rmi_device *rmi_dev,
+ struct f11_2d_device_query *device_query,
+ struct f11_2d_sensor_query *sensor_query,
+ struct f11_2d_ctrl *ctrl,
+ u16 ctrl_base_addr) {
+
+ struct rmi_driver_data *driver_data = dev_get_drvdata(&rmi_dev->dev);
+ struct rmi_function_container *fc = driver_data->f01_container;
+
+ ctrl->ctrl0_9 = devm_kzalloc(&fc->dev, sizeof(union f11_2d_ctrl0_9),
+ GFP_KERNEL);
+ if (!ctrl->ctrl0_9)
+ return -ENOMEM;
+ if (sensor_query->f11_2d_query7__8[0]) {
+ ctrl->ctrl10 = devm_kzalloc(&fc->dev,
+ sizeof(union f11_2d_ctrl10), GFP_KERNEL);
+ if (!ctrl->ctrl10)
+ return -ENOMEM;
+ }
+
+ if (sensor_query->f11_2d_query7__8[1]) {
+ ctrl->ctrl11 = devm_kzalloc(&fc->dev,
+ sizeof(union f11_2d_ctrl11), GFP_KERNEL);
+ if (!ctrl->ctrl11)
+ return -ENOMEM;
+ }
+
+ if (device_query->has_query9 && sensor_query->query9.has_pen) {
+ ctrl->ctrl20_21 = devm_kzalloc(&fc->dev,
+ sizeof(union f11_2d_ctrl20_21), GFP_KERNEL);
+ if (!ctrl->ctrl20_21)
+ return -ENOMEM;
+ }
+
+ if (device_query->has_query9 && sensor_query->query9.has_proximity) {
+ ctrl->ctrl22_26 = devm_kzalloc(&fc->dev,
+ sizeof(union f11_2d_ctrl22_26), GFP_KERNEL);
+ if (!ctrl->ctrl22_26)
+ return -ENOMEM;
+ }
+
+ if (device_query->has_query9 &&
+ (sensor_query->query9.has_palm_det_sensitivity ||
+ sensor_query->query9.has_suppress_on_palm_detect)) {
+ ctrl->ctrl27 = devm_kzalloc(&fc->dev,
+ sizeof(union f11_2d_ctrl27), GFP_KERNEL);
+ if (!ctrl->ctrl27)
+ return -ENOMEM;
+ }
+
+ if (sensor_query->has_multi_finger_scroll) {
+ ctrl->ctrl28 = devm_kzalloc(&fc->dev,
+ sizeof(union f11_2d_ctrl28), GFP_KERNEL);
+ if (!ctrl->ctrl28)
+ return -ENOMEM;
+ }
+
+ if (device_query->has_query11 && device_query->has_z_tuning) {
+ ctrl->ctrl29_30 = devm_kzalloc(&fc->dev,
+ sizeof(union f11_2d_ctrl29_30), GFP_KERNEL);
+ if (!ctrl->ctrl29_30)
+ return -ENOMEM;
+ }
+
+ return f11_read_control_regs(rmi_dev, ctrl, ctrl_base_addr);
+}
+
+static int f11_write_control_regs(struct rmi_device *rmi_dev,
+ struct f11_2d_sensor_query *query,
+ struct f11_2d_ctrl *ctrl,
+ u16 ctrl_base_addr)
+{
+ u16 write_address = ctrl_base_addr;
+ int error;
+
+ error = rmi_write_block(rmi_dev, write_address,
+ ctrl->ctrl0_9->regs,
+ sizeof(ctrl->ctrl0_9->regs));
+ if (error < 0)
+ return error;
+ write_address += sizeof(ctrl->ctrl0_9);
+
+ if (ctrl->ctrl10) {
+ error = rmi_write_block(rmi_dev, write_address,
+ &ctrl->ctrl10->reg, 1);
+ if (error < 0)
+ return error;
+ write_address++;
+ }
+
+ if (ctrl->ctrl11) {
+ error = rmi_write_block(rmi_dev, write_address,
+ &ctrl->ctrl11->reg, 1);
+ if (error < 0)
+ return error;
+ write_address++;
+ }
+
+ if (ctrl->ctrl12 && ctrl->ctrl12_size && query->configurable) {
+ if (ctrl->ctrl12_size > query->max_electrodes) {
+ dev_err(&rmi_dev->dev,
+ "%s: invalid cfg size:%d, should be < %d.\n",
+ __func__, ctrl->ctrl12_size,
+ query->max_electrodes);
+ return -EINVAL;
+ }
+ error = rmi_write_block(rmi_dev, write_address,
+ &ctrl->ctrl12->reg,
+ ctrl->ctrl12_size);
+ if (error < 0)
+ return error;
+ write_address += ctrl->ctrl12_size;
+ }
+
+ if (ctrl->ctrl14) {
+ error = rmi_write_block(rmi_dev, write_address,
+ &ctrl->ctrl14->reg, 1);
+ if (error < 0)
+ return error;
+ write_address++;
+ }
+
+ if (ctrl->ctrl15) {
+ error = rmi_write_block(rmi_dev, write_address,
+ &ctrl->ctrl15->reg, 1);
+ if (error < 0)
+ return error;
+ write_address++;
+ }
+
+ if (ctrl->ctrl16) {
+ error = rmi_write_block(rmi_dev, write_address,
+ &ctrl->ctrl16->reg, 1);
+ if (error < 0)
+ return error;
+ write_address++;
+ }
+
+ if (ctrl->ctrl17) {
+ error = rmi_write_block(rmi_dev, write_address,
+ &ctrl->ctrl17->reg, 1);
+ if (error < 0)
+ return error;
+ write_address++;
+ }
+
+ if (ctrl->ctrl18_19) {
+ error = rmi_write_block(rmi_dev, write_address,
+ ctrl->ctrl18_19->reg, sizeof(union f11_2d_ctrl18_19));
+ if (error < 0)
+ return error;
+ write_address += sizeof(union f11_2d_ctrl18_19);
+ }
+
+ if (ctrl->ctrl20_21) {
+ error = rmi_write_block(rmi_dev, write_address,
+ ctrl->ctrl20_21->reg,
+ sizeof(union f11_2d_ctrl20_21));
+ if (error < 0)
+ return error;
+ write_address += sizeof(union f11_2d_ctrl20_21);
+ }
+
+ if (ctrl->ctrl22_26) {
+ error = rmi_write_block(rmi_dev, write_address,
+ ctrl->ctrl22_26->regs,
+ sizeof(union f11_2d_ctrl22_26));
+ if (error < 0)
+ return error;
+ write_address += sizeof(union f11_2d_ctrl22_26);
+ }
+
+ if (ctrl->ctrl27) {
+ error = rmi_write_block(rmi_dev, write_address,
+ ctrl->ctrl27->regs,
+ sizeof(union f11_2d_ctrl27));
+ if (error < 0)
+ return error;
+ write_address += sizeof(union f11_2d_ctrl27);
+ }
+
+ if (ctrl->ctrl28) {
+ error = rmi_write_block(rmi_dev, write_address,
+ ctrl->ctrl28->regs,
+ sizeof(union f11_2d_ctrl28));
+ if (error < 0)
+ return error;
+ write_address += sizeof(union f11_2d_ctrl28);
+ }
+
+ if (ctrl->ctrl29_30) {
+ error = rmi_write_block(rmi_dev, write_address,
+ ctrl->ctrl29_30->regs,
+ sizeof(union f11_2d_ctrl29_30));
+ if (error < 0)
+ return error;
+ write_address += sizeof(union f11_2d_ctrl29_30);
+ }
+
+ return 0;
+}
+
+static int rmi_f11_get_query_parameters(struct rmi_device *rmi_dev,
+ struct f11_2d_sensor_query *query, u16 query_base_addr)
+{
+ int query_size;
+ int rc;
+
+ rc = rmi_read_block(rmi_dev, query_base_addr, query->f11_2d_query1__4,
+ sizeof(query->f11_2d_query1__4));
+ if (rc < 0)
+ return rc;
+ query_size = rc;
+
+ if (query->has_abs) {
+ rc = rmi_read(rmi_dev, query_base_addr + query_size,
+ &query->f11_2d_query5);
+ if (rc < 0)
+ return rc;
+ query_size++;
+ }
+
+ if (query->has_rel) {
+ rc = rmi_read(rmi_dev, query_base_addr + query_size,
+ &query->f11_2d_query6);
+ if (rc < 0)
+ return rc;
+ query_size++;
+ }
+
+ if (query->has_gestures) {
+ rc = rmi_read_block(rmi_dev, query_base_addr + query_size,
+ query->f11_2d_query7__8,
+ sizeof(query->f11_2d_query7__8));
+ if (rc < 0)
+ return rc;
+ query_size += sizeof(query->f11_2d_query7__8);
+ }
+
+ if (query->has_touch_shapes) {
+ rc = rmi_read(rmi_dev, query_base_addr + query_size,
+ &query->f11_2d_query10);
+ if (rc < 0)
+ return rc;
+ query_size++;
+ }
+
+ return query_size;
+}
+
+/* This operation is done in a number of places, so we have a handy routine
+ * for it.
+ */
+static void f11_set_abs_params(struct rmi_function_container *fc, int index)
+{
+ struct f11_data *f11 = fc->data;
+ struct f11_2d_sensor *sensor = &f11->sensors[index];
+ struct input_dev *input = sensor->input;
+ int device_x_max =
+ f11->dev_controls.ctrl0_9->sensor_max_x_pos;
+ int device_y_max =
+ f11->dev_controls.ctrl0_9->sensor_max_y_pos;
+ int x_min, x_max, y_min, y_max;
+ if (sensor->axis_align.swap_axes) {
+ int temp = device_x_max;
+ device_x_max = device_y_max;
+ device_y_max = temp;
+ }
+ /* Use the max X and max Y read from the device, or the clip values,
+ * whichever is stricter.
+ */
+ x_min = sensor->axis_align.clip_X_low;
+ if (sensor->axis_align.clip_X_high)
+ x_max = min((int) device_x_max,
+ sensor->axis_align.clip_X_high);
+ else
+ x_max = device_x_max;
+
+ y_min = sensor->axis_align.clip_Y_low;
+ if (sensor->axis_align.clip_Y_high)
+ y_max = min((int) device_y_max,
+ sensor->axis_align.clip_Y_high);
+ else
+ y_max = device_y_max;
+
+ dev_dbg(&fc->dev, "Set ranges X=[%d..%d] Y=[%d..%d].",
+ x_min, x_max, y_min, y_max);
+
+ input_set_abs_params(input, ABS_MT_PRESSURE, 0,
+ DEFAULT_MAX_ABS_MT_PRESSURE, 0, 0);
+ input_set_abs_params(input, ABS_MT_TOUCH_MAJOR,
+ 0, DEFAULT_MAX_ABS_MT_TOUCH, 0, 0);
+ input_set_abs_params(input, ABS_MT_TOUCH_MINOR,
+ 0, DEFAULT_MAX_ABS_MT_TOUCH, 0, 0);
+ input_set_abs_params(input, ABS_MT_ORIENTATION,
+ 0, DEFAULT_MAX_ABS_MT_ORIENTATION, 0, 0);
+ input_set_abs_params(input, ABS_MT_TRACKING_ID,
+ DEFAULT_MIN_ABS_MT_TRACKING_ID,
+ DEFAULT_MAX_ABS_MT_TRACKING_ID, 0, 0);
+ /* TODO get max_x_pos (and y) from control registers. */
+ input_set_abs_params(input, ABS_MT_POSITION_X,
+ x_min, x_max, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_Y,
+ y_min, y_max, 0, 0);
+ if (!sensor->type_a)
+ input_mt_init_slots(input, sensor->nbr_fingers);
+ if (IS_ENABLED(CONFIG_RMI4_F11_PEN) &&
+ sensor->sens_query.query9.has_pen)
+ input_set_abs_params(input, ABS_MT_TOOL_TYPE,
+ 0, MT_TOOL_MAX, 0, 0);
+ else
+ input_set_abs_params(input, ABS_MT_TOOL_TYPE,
+ 0, MT_TOOL_FINGER, 0, 0);
+}
+
+static int f11_device_init(struct rmi_function_container *fc)
+{
+ int rc;
+
+ rc = rmi_f11_initialize(fc);
+ if (rc < 0)
+ goto err_free_data;
+
+ rc = rmi_f11_register_devices(fc);
+ if (rc < 0)
+ goto err_free_data;
+
+ rc = rmi_f11_create_sysfs(fc);
+ if (rc < 0)
+ goto err_free_data;
+
+ return 0;
+
+err_free_data:
+ rmi_f11_free_memory(fc);
+
+ return rc;
+}
+
+static void rmi_f11_free_memory(struct rmi_function_container *fc)
+{
+ struct f11_data *f11 = fc->data;
+ int i;
+
+ if (f11) {
+ for (i = 0; i < f11->dev_query.nbr_of_sensors + 1; i++)
+ kfree(f11->sensors[i].button_map);
+ }
+}
+
+
+static int rmi_f11_initialize(struct rmi_function_container *fc)
+{
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ struct f11_data *f11;
+ struct f11_2d_ctrl *ctrl;
+ u8 query_offset;
+ u16 query_base_addr;
+ u16 control_base_addr;
+ u16 max_x_pos, max_y_pos, temp;
+ int rc;
+ int i;
+ struct rmi_device_platform_data *pdata = to_rmi_platform_data(rmi_dev);
+
+ dev_dbg(&fc->dev, "Initializing F11 values for %s.\n",
+ pdata->sensor_name);
+
+ /*
+ ** init instance data, fill in values and create any sysfs files
+ */
+ f11 = devm_kzalloc(&fc->dev, sizeof(struct f11_data), GFP_KERNEL);
+ if (!f11)
+ return -ENOMEM;
+
+ fc->data = f11;
+ f11->rezero_wait_ms = pdata->f11_rezero_wait;
+
+ query_base_addr = fc->fd.query_base_addr;
+ control_base_addr = fc->fd.control_base_addr;
+
+ rc = rmi_read(rmi_dev, query_base_addr, &f11->dev_query.f11_2d_query0);
+ if (rc < 0)
+ return rc;
+
+ query_offset = (query_base_addr + 1);
+ /* Increase with one since number of sensors is zero based */
+ for (i = 0; i < (f11->dev_query.nbr_of_sensors + 1); i++) {
+ struct f11_2d_sensor *sensor = &f11->sensors[i];
+ sensor->sensor_index = i;
+ sensor->fc = fc;
+
+ rc = rmi_f11_get_query_parameters(rmi_dev, &sensor->sens_query,
+ query_offset);
+ if (rc < 0)
+ return rc;
+ query_offset += rc;
+
+ if (f11->dev_query.has_query9) {
+ rc = rmi_read(rmi_dev, query_offset,
+ &sensor->sens_query.query9.reg);
+ if (rc < 0) {
+ dev_err(&fc->dev, "Failed to read query 9.\n");
+ return rc;
+ }
+ query_offset += rc;
+ }
+
+ rc = f11_allocate_control_regs(rmi_dev,
+ &f11->dev_query, &sensor->sens_query,
+ &f11->dev_controls, control_base_addr);
+ if (rc < 0) {
+ dev_err(&fc->dev,
+ "Failed to initialize F11 control params.\n");
+ return rc;
+ }
+
+ if (i < pdata->f11_sensor_count) {
+ sensor->axis_align =
+ pdata->f11_sensor_data[i].axis_align;
+ sensor->virtual_buttons =
+ pdata->f11_sensor_data[i].virtual_buttons;
+ sensor->type_a = pdata->f11_sensor_data[i].type_a;
+ }
+
+ rc = rmi_read_block(rmi_dev,
+ control_base_addr + F11_CTRL_SENSOR_MAX_X_POS_OFFSET,
+ (u8 *)&max_x_pos, sizeof(max_x_pos));
+ if (rc < 0)
+ return rc;
+
+ rc = rmi_read_block(rmi_dev,
+ control_base_addr + F11_CTRL_SENSOR_MAX_Y_POS_OFFSET,
+ (u8 *)&max_y_pos, sizeof(max_y_pos));
+ if (rc < 0)
+ return rc;
+
+ if (sensor->axis_align.swap_axes) {
+ temp = max_x_pos;
+ max_x_pos = max_y_pos;
+ max_y_pos = temp;
+ }
+ sensor->max_x = max_x_pos;
+ sensor->max_y = max_y_pos;
+
+ rc = f11_2d_construct_data(sensor);
+ if (rc < 0)
+ return rc;
+
+ ctrl = &f11->dev_controls;
+ if (sensor->axis_align.delta_x_threshold) {
+ ctrl->ctrl0_9->delta_x_threshold =
+ sensor->axis_align.delta_x_threshold;
+ rc = rmi_write_block(rmi_dev,
+ ctrl->ctrl0_9->address,
+ ctrl->ctrl0_9->regs,
+ sizeof(ctrl->ctrl0_9->regs));
+ if (rc < 0)
+ dev_warn(&fc->dev, "Failed to write to delta_x_threshold %d. Code: %d.\n",
+ i, rc);
+
+ }
+
+ if (sensor->axis_align.delta_y_threshold) {
+ ctrl->ctrl0_9->delta_y_threshold =
+ sensor->axis_align.delta_y_threshold;
+ rc = rmi_write_block(rmi_dev,
+ ctrl->ctrl0_9->address,
+ ctrl->ctrl0_9->regs,
+ sizeof(ctrl->ctrl0_9->regs));
+ if (rc < 0)
+ dev_warn(&fc->dev, "Failed to write to delta_y_threshold %d. Code: %d.\n",
+ i, rc);
+ }
+
+ if (IS_ENABLED(CONFIG_RMI4_DEBUG)) {
+ rc = setup_sensor_debugfs(sensor);
+ if (rc < 0)
+ dev_warn(&fc->dev, "Failed to setup debugfs for F11 sensor %d. Code: %d.\n",
+ i, rc);
+ }
+ }
+
+ if (IS_ENABLED(CONFIG_RMI4_DEBUG)) {
+ rc = setup_f11_debugfs(fc);
+ if (rc < 0)
+ dev_warn(&fc->dev, "Failed to setup debugfs for F11. Code: %d.\n",
+ rc);
+ }
+
+ mutex_init(&f11->dev_controls_mutex);
+ return 0;
+}
+
+static void register_virtual_buttons(struct rmi_function_container *fc,
+ struct f11_2d_sensor *sensor) {
+ int j;
+
+ if (!sensor->sens_query.has_gestures)
+ return;
+ if (!sensor->virtual_buttons.buttons) {
+ dev_warn(&fc->dev, "No virtual button platform data for 2D sensor %d.\n",
+ sensor->sensor_index);
+ return;
+ }
+ /* call devm_kcalloc when it will be defined in kernel */
+ sensor->button_map = devm_kzalloc(&fc->dev,
+ sensor->virtual_buttons.buttons,
+ GFP_KERNEL);
+ if (!sensor->button_map) {
+ dev_err(&fc->dev, "Failed to allocate the virtual button map.\n");
+ return;
+ }
+
+ /* manage button map using input subsystem */
+ sensor->input->keycode = sensor->button_map;
+ sensor->input->keycodesize = sizeof(u8);
+ sensor->input->keycodemax = sensor->virtual_buttons.buttons;
+
+ /* set bits for each button... */
+ for (j = 0; j < sensor->virtual_buttons.buttons; j++) {
+ sensor->button_map[j] = sensor->virtual_buttons.map[j].code;
+ set_bit(sensor->button_map[j], sensor->input->keybit);
+ }
+}
+
+static int rmi_f11_register_devices(struct rmi_function_container *fc)
+{
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ struct f11_data *f11 = fc->data;
+ struct input_dev *input_dev;
+ struct input_dev *input_dev_mouse;
+ int sensors_itertd = 0;
+ int i;
+ int rc;
+
+ for (i = 0; i < (f11->dev_query.nbr_of_sensors + 1); i++) {
+ struct f11_2d_sensor *sensor = &f11->sensors[i];
+ sensors_itertd = i;
+ input_dev = input_allocate_device();
+ if (!input_dev) {
+ rc = -ENOMEM;
+ goto error_unregister;
+ }
+
+ sensor->input = input_dev;
+ /* TODO how to modify the dev name and
+ * phys name for input device */
+ sprintf(sensor->input_name, "%sfn%02x",
+ dev_name(&rmi_dev->dev), fc->fd.function_number);
+ input_dev->name = sensor->input_name;
+ sprintf(sensor->input_phys, "%s/input0",
+ input_dev->name);
+ input_dev->phys = sensor->input_phys;
+ input_dev->dev.parent = &rmi_dev->dev;
+ input_set_drvdata(input_dev, f11);
+
+ set_bit(EV_SYN, input_dev->evbit);
+ set_bit(EV_ABS, input_dev->evbit);
+ input_set_capability(input_dev, EV_KEY, BTN_TOUCH);
+ set_bit(INPUT_PROP_DIRECT, input_dev->propbit);
+
+ f11_set_abs_params(fc, i);
+
+ dev_dbg(&fc->dev, "%s: Sensor %d hasRel %d.\n",
+ __func__, i, sensor->sens_query.has_rel);
+ if (sensor->sens_query.has_rel) {
+ set_bit(EV_REL, input_dev->evbit);
+ set_bit(REL_X, input_dev->relbit);
+ set_bit(REL_Y, input_dev->relbit);
+ }
+ rc = input_register_device(input_dev);
+ if (rc < 0) {
+ input_free_device(input_dev);
+ sensor->input = NULL;
+ goto error_unregister;
+ }
+
+ if (IS_ENABLED(CONFIG_RMI4_VIRTUAL_BUTTON))
+ register_virtual_buttons(fc, sensor);
+
+ if (sensor->sens_query.has_rel) {
+ /*create input device for mouse events */
+ input_dev_mouse = input_allocate_device();
+ if (!input_dev_mouse) {
+ rc = -ENOMEM;
+ goto error_unregister;
+ }
+
+ sensor->mouse_input = input_dev_mouse;
+ input_dev_mouse->name = "rmi_mouse";
+ input_dev_mouse->phys = "rmi_f11/input0";
+
+ input_dev_mouse->id.vendor = 0x18d1;
+ input_dev_mouse->id.product = 0x0210;
+ input_dev_mouse->id.version = 0x0100;
+
+ set_bit(EV_REL, input_dev_mouse->evbit);
+ set_bit(REL_X, input_dev_mouse->relbit);
+ set_bit(REL_Y, input_dev_mouse->relbit);
+
+ set_bit(BTN_MOUSE, input_dev_mouse->evbit);
+ /* Register device's buttons and keys */
+ set_bit(EV_KEY, input_dev_mouse->evbit);
+ set_bit(BTN_LEFT, input_dev_mouse->keybit);
+ set_bit(BTN_MIDDLE, input_dev_mouse->keybit);
+ set_bit(BTN_RIGHT, input_dev_mouse->keybit);
+
+ rc = input_register_device(input_dev_mouse);
+ if (rc < 0) {
+ input_free_device(input_dev_mouse);
+ sensor->mouse_input = NULL;
+ goto error_unregister;
+ }
+
+ set_bit(BTN_RIGHT, input_dev_mouse->keybit);
+ }
+
+ }
+
+ return 0;
+
+error_unregister:
+ for (; sensors_itertd > 0; sensors_itertd--) {
+ if (f11->sensors[sensors_itertd].input) {
+ if (f11->sensors[sensors_itertd].mouse_input) {
+ input_unregister_device(
+ f11->sensors[sensors_itertd].mouse_input);
+ f11->sensors[sensors_itertd].mouse_input = NULL;
+ }
+ input_unregister_device(f11->sensors[i].input);
+ f11->sensors[i].input = NULL;
+ }
+ }
+
+ return rc;
+}
+
+static void rmi_f11_free_devices(struct rmi_function_container *fc)
+{
+ struct f11_data *f11 = fc->data;
+ int i;
+
+ for (i = 0; i < (f11->dev_query.nbr_of_sensors + 1); i++) {
+ if (f11->sensors[i].input)
+ input_unregister_device(f11->sensors[i].input);
+ if (f11->sensors[i].sens_query.has_rel &&
+ f11->sensors[i].mouse_input)
+ input_unregister_device(f11->sensors[i].mouse_input);
+ }
+}
+
+static int rmi_f11_create_sysfs(struct rmi_function_container *fc)
+{
+ int attr_count = 0;
+ int rc;
+ struct f11_data *f11 = fc->data;
+
+ dev_dbg(&fc->dev, "Creating sysfs files.\n");
+ /* Set up sysfs device attributes. */
+ for (attr_count = 0; attr_count < ARRAY_SIZE(attrs); attr_count++) {
+ if (sysfs_create_file
+ (&fc->dev.kobj, &attrs[attr_count].attr) < 0) {
+ dev_err(&fc->dev,
+ "Failed to create sysfs file for %s.",
+ attrs[attr_count].attr.name);
+ rc = -ENODEV;
+ goto err_remove_sysfs;
+ }
+ }
+ if (sysfs_create_group(&fc->dev.kobj, &attrs_control0) < 0) {
+ dev_err(&fc->dev, "Failed to create query sysfs files.\n");
+ return -ENODEV;
+ }
+ if (f11->dev_controls.ctrl29_30) {
+ if (sysfs_create_group(&fc->dev.kobj,
+ &attrs_control29_30) < 0) {
+ dev_err(&fc->dev,
+ "Failed to create query sysfs files.");
+ return -ENODEV;
+ }
+ }
+
+ return 0;
+
+err_remove_sysfs:
+ for (attr_count--; attr_count >= 0; attr_count--)
+ sysfs_remove_file(&fc->dev.kobj, &attrs[attr_count].attr);
+ sysfs_remove_group(&fc->dev.kobj, &attrs_control0);
+ if (f11->dev_controls.ctrl29_30)
+ sysfs_remove_group(&fc->dev.kobj, &attrs_control29_30);
+ return rc;
+}
+
+static int rmi_f11_config(struct rmi_function_container *fc)
+{
+ struct f11_data *f11 = fc->data;
+ int i;
+ int rc;
+
+ for (i = 0; i < (f11->dev_query.nbr_of_sensors + 1); i++) {
+ rc = f11_write_control_regs(fc->rmi_dev,
+ &f11->sensors[i].sens_query,
+ &f11->dev_controls,
+ fc->fd.query_base_addr);
+ if (rc < 0)
+ return rc;
+ }
+
+ return 0;
+}
+
+int rmi_f11_attention(struct rmi_function_container *fc, u8 *irq_bits)
+{
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ struct f11_data *f11 = fc->data;
+ u16 data_base_addr = fc->fd.data_base_addr;
+ u16 data_base_addr_offset = 0;
+ int error;
+ int i;
+
+ for (i = 0; i < f11->dev_query.nbr_of_sensors + 1; i++) {
+ error = rmi_read_block(rmi_dev,
+ data_base_addr + data_base_addr_offset,
+ f11->sensors[i].data_pkt,
+ f11->sensors[i].pkt_size);
+ if (error < 0)
+ return error;
+
+ rmi_f11_finger_handler(f11, &f11->sensors[i]);
+ rmi_f11_virtual_button_handler(&f11->sensors[i]);
+ data_base_addr_offset += f11->sensors[i].pkt_size;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int rmi_f11_resume(struct rmi_function_container *fc)
+{
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ struct f11_data *data = fc->data;
+ /* Command register always reads as 0, so we can just use a local. */
+ union f11_2d_commands commands = {};
+ int retval = 0;
+
+ dev_dbg(&fc->dev, "Resuming...\n");
+ if (!data->rezero_wait_ms)
+ return 0;
+
+ mdelay(data->rezero_wait_ms);
+
+ commands.rezero = 1;
+ retval = rmi_write_block(rmi_dev, fc->fd.command_base_addr,
+ &commands.reg, sizeof(commands.reg));
+ if (retval < 0) {
+ dev_err(&rmi_dev->dev, "%s: failed to issue rezero command, error = %d.",
+ __func__, retval);
+ return retval;
+ }
+
+ return retval;
+}
+#endif /* CONFIG_PM */
+
+static int f11_remove_device(struct device *dev)
+{
+ int attr_count = 0;
+ struct f11_data *f11;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ f11 = fc->data;
+
+ if (IS_ENABLED(CONFIG_RMI4_DEBUG)) {
+ int i;
+
+ for (i = 0; i < f11->dev_query.nbr_of_sensors + 1; i++)
+ teardown_sensor_debugfs(&f11->sensors[i]);
+ teardown_f11_debugfs(f11);
+ }
+
+ for (attr_count = 0; attr_count < ARRAY_SIZE(attrs); attr_count++)
+ sysfs_remove_file(&fc->dev.kobj, &attrs[attr_count].attr);
+
+ sysfs_remove_group(&fc->dev.kobj, &attrs_control0);
+ if (f11->dev_controls.ctrl29_30)
+ sysfs_remove_group(&fc->dev.kobj, &attrs_control29_30);
+
+ rmi_f11_free_devices(fc);
+
+ rmi_f11_free_memory(fc);
+
+ return 0;
+}
+
+static int f11_probe(struct device *dev);
+
+static struct rmi_function_handler function_handler = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "rmi_f11",
+ .bus = &rmi_bus_type,
+ .probe = f11_probe,
+ .remove = f11_remove_device,
+ },
+ .func = 0x11,
+ .config = rmi_f11_config,
+ .attention = rmi_f11_attention,
+#ifdef CONFIG_PM
+ .resume = rmi_f11_resume
+#endif
+};
+
+static __devinit int f11_probe(struct device *dev)
+{
+ struct rmi_function_container *fc;
+
+ if (dev->type != &rmi_function_type) {
+ dev_dbg(dev, "Not a function device.\n");
+ return 1;
+ }
+ fc = to_rmi_function_container(dev);
+ if (fc->fd.function_number != function_handler.func) {
+ dev_dbg(dev, "Device is F%02X, not F%02X.\n",
+ fc->fd.function_number, function_handler.func);
+ return 1;
+ }
+
+ return f11_device_init(fc);
+}
+
+static int __init rmi_f11_module_init(void)
+{
+ int error;
+
+ error = driver_register(&function_handler.driver);
+ if (error < 0) {
+ pr_err("%s: register driver failed!\n", __func__);
+ return error;
+ }
+
+ return 0;
+}
+
+static void __exit rmi_f11_module_exit(void)
+{
+ driver_unregister(&function_handler.driver);
+}
+
+static ssize_t f11_maxPos_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rmi_function_container *fc;
+ struct f11_data *data;
+
+ fc = to_rmi_function_container(dev);
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%u %u\n",
+ data->sensors[0].max_x, data->sensors[0].max_y);
+}
+
+static ssize_t f11_relreport_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rmi_function_container *fc;
+ struct f11_data *instance_data;
+
+ fc = to_rmi_function_container(dev);
+ instance_data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n",
+ instance_data->
+ sensors[0].axis_align.rel_report_enabled);
+}
+
+static ssize_t f11_relreport_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct rmi_function_container *fc;
+ struct f11_data *instance_data;
+ unsigned int new_value;
+
+ fc = to_rmi_function_container(dev);
+ instance_data = fc->data;
+
+
+ if (sscanf(buf, "%u", &new_value) != 1)
+ return -EINVAL;
+ if (new_value < 0 || new_value > 1)
+ return -EINVAL;
+ instance_data->sensors[0].axis_align.rel_report_enabled = new_value;
+
+ return count;
+}
+
+static ssize_t f11_rezero_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rmi_function_container *fc = NULL;
+ unsigned int rezero;
+ int retval = 0;
+ /* Command register always reads as 0, so we can just use a local. */
+ union f11_2d_commands commands = {};
+
+ fc = to_rmi_function_container(dev);
+
+ if (sscanf(buf, "%u", &rezero) != 1)
+ return -EINVAL;
+ if (rezero < 0 || rezero > 1)
+ return -EINVAL;
+
+ /* Per spec, 0 has no effect, so we skip it entirely. */
+ if (rezero) {
+ commands.rezero = 1;
+ retval = rmi_write_block(fc->rmi_dev, fc->fd.command_base_addr,
+ &commands.reg, sizeof(commands.reg));
+ if (retval < 0) {
+ dev_err(dev, "%s: failed to issue rezero command, error = %d.",
+ __func__, retval);
+ return retval;
+ }
+ }
+
+ return count;
+}
+
+/* Control sysfs files */
+show_store_union_struct_unsigned(dev_controls, ctrl0_9, abs_pos_filt)
+show_store_union_struct_unsigned(dev_controls, ctrl29_30, z_touch_threshold)
+show_store_union_struct_unsigned(dev_controls, ctrl29_30, z_touch_hysteresis)
+
+module_init(rmi_f11_module_init);
+module_exit(rmi_f11_module_exit);
+
+MODULE_AUTHOR("Christopher Heiny <cheiny@xxxxxxxxxxxxx");
+MODULE_DESCRIPTION("RMI F11 module");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(RMI_DRIVER_VERSION);
--
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