--- /dev/null
+/*
+ * Synaptics DSX touchscreen driver
+ *
+ * Copyright (C) 2012-2015 Synaptics Incorporated. All rights reserved.
+ *
+ * Copyright (C) 2012 Alexandra Chin <alexandra.chin@tw.synaptics.com>
+ * Copyright (C) 2012 Scott Lin <scott.lin@tw.synaptics.com>
+ * Copyright 2018 NXP
+ *
+ * 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.
+ *
+ * INFORMATION CONTAINED IN THIS DOCUMENT IS PROVIDED "AS-IS," AND SYNAPTICS
+ * EXPRESSLY DISCLAIMS ALL EXPRESS AND IMPLIED WARRANTIES, INCLUDING ANY
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,
+ * AND ANY WARRANTIES OF NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHTS.
+ * IN NO EVENT SHALL SYNAPTICS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OF THE INFORMATION CONTAINED IN THIS DOCUMENT, HOWEVER CAUSED
+ * AND BASED ON ANY THEORY OF LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, AND EVEN IF SYNAPTICS WAS ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE. IF A TRIBUNAL OF COMPETENT JURISDICTION DOES
+ * NOT PERMIT THE DISCLAIMER OF DIRECT DAMAGES OR ANY OTHER DAMAGES, SYNAPTICS'
+ * TOTAL CUMULATIVE LIABILITY TO ANY PARTY SHALL NOT EXCEED ONE HUNDRED U.S.
+ * DOLLARS.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/stringify.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <linux/dma-mapping.h>
+#include <linux/kthread.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/gpio.h>
+
+#include "synaptics_dsx_i2c.h"
+#include "synaptics_dsx.h"
+
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+
+#include <linux/input/mt.h>
+
+
+#define DRIVER_NAME "synaptics_dsx_i2c"
+#define INPUT_PHYS_NAME "synaptics_dsx_i2c/input0"
+
+#define TYPE_B_PROTOCOL
+
+#define UBL_I2C_ADDR 0x2c
+
+#define SENSOR_MAX_X 1080
+#define SENSOR_MAX_Y 1920
+
+#define WAKEUP_GESTURE false
+
+#define NO_0D_WHILE_2D
+#define REPORT_2D_W
+
+#define F12_DATA_15_WORKAROUND
+
+#define RPT_TYPE (1 << 0)
+#define RPT_X_LSB (1 << 1)
+#define RPT_X_MSB (1 << 2)
+#define RPT_Y_LSB (1 << 3)
+#define RPT_Y_MSB (1 << 4)
+#define RPT_Z (1 << 5)
+#define RPT_WX (1 << 6)
+#define RPT_WY (1 << 7)
+#define RPT_DEFAULT (RPT_TYPE | RPT_X_LSB | RPT_X_MSB | RPT_Y_LSB | RPT_Y_MSB)
+#define attrify(propname) (&dev_attr_##propname.attr)
+
+#define EXP_FN_WORK_DELAY_MS 1000 /* ms */
+#define SYN_I2C_RETRY_TIMES 5
+#define MAX_F11_TOUCH_WIDTH 15
+
+#define CHECK_STATUS_TIMEOUT_MS 100
+#define DELAY_BOOT_READY 200
+#define DELAY_RESET_LOW 20
+#define DELAY_UI_READY 200
+
+#define F01_STD_QUERY_LEN 21
+#define F01_BUID_ID_OFFSET 18
+#define F11_STD_QUERY_LEN 9
+#define F11_STD_CTRL_LEN 10
+#define F11_STD_DATA_LEN 12
+
+#define STATUS_NO_ERROR 0x00
+#define STATUS_RESET_OCCURRED 0x01
+#define STATUS_INVALID_CONFIG 0x02
+#define STATUS_DEVICE_FAILURE 0x03
+#define STATUS_CONFIG_CRC_FAILURE 0x04
+#define STATUS_FIRMWARE_CRC_FAILURE 0x05
+#define STATUS_CRC_IN_PROGRESS 0x06
+
+#define NORMAL_OPERATION (0 << 0)
+#define SENSOR_SLEEP (1 << 0)
+#define NO_SLEEP_OFF (0 << 2)
+#define NO_SLEEP_ON (1 << 2)
+#define CONFIGURED (1 << 7)
+
+
+#define F11_CONTINUOUS_MODE 0x00
+#define F11_WAKEUP_GESTURE_MODE 0x04
+#define F12_CONTINUOUS_MODE 0x00
+#define F12_WAKEUP_GESTURE_MODE 0x02
+
+#define F12_UDG_DETECT 0x0f
+
+#ifdef USE_I2C_DMA
+#include <linux/dma-mapping.h>
+static unsigned char *wDMABuf_va;
+static dma_addr_t wDMABuf_pa;
+#endif
+
+static struct task_struct *thread;
+static DECLARE_WAIT_QUEUE_HEAD(waiter);
+int tpd_halt;
+static int tpd_flag;
+DEFINE_MUTEX(rmi4_report_mutex);
+static struct device *g_dev;
+
+/* for 0D button */
+static unsigned int cap_button_codes[] = {KEY_APPSELECT, KEY_HOMEPAGE, KEY_BACK};
+static struct synaptics_dsx_cap_button_map cap_button_map = {
+ .nbuttons = ARRAY_SIZE(cap_button_codes),
+ .map = cap_button_codes,
+};
+
+#ifdef CONFIG_OF_TOUCH
+unsigned int touch_irq;
+#endif
+
+#ifdef CONFIG_OF_TOUCH
+static irqreturn_t tpd_eint_handler(unsigned int irq, struct irq_desc *desc);
+#else
+static void tpd_eint_handler(void);
+#endif
+
+static int touch_event_handler(void *data);
+
+static int synaptics_rmi4_i2c_read(struct synaptics_rmi4_data *rmi4_data,
+ unsigned short addr, unsigned char *data,
+ unsigned short length);
+
+static int synaptics_rmi4_i2c_write(struct synaptics_rmi4_data *rmi4_data,
+ unsigned short addr, unsigned char *data,
+ unsigned short length);
+
+static int synaptics_rmi4_f12_set_enables(struct synaptics_rmi4_data *rmi4_data,
+ unsigned short ctrl28);
+
+static int synaptics_rmi4_free_fingers(struct synaptics_rmi4_data *rmi4_data);
+static int synaptics_rmi4_reinit_device(struct synaptics_rmi4_data *rmi4_data);
+static int synaptics_rmi4_reset_device(struct synaptics_rmi4_data *rmi4_data);
+
+
+static int __maybe_unused synaptics_rmi4_suspend(struct device *dev);
+
+static int __maybe_unused synaptics_rmi4_resume(struct device *dev);
+
+static ssize_t synaptics_rmi4_f01_reset_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count);
+
+static ssize_t synaptics_rmi4_f01_productinfo_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t synaptics_rmi4_f01_buildid_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t synaptics_rmi4_f01_flashprog_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t synaptics_rmi4_0dbutton_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t synaptics_rmi4_0dbutton_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count);
+
+static ssize_t synaptics_rmi4_suspend_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count);
+
+static ssize_t synaptics_rmi4_wake_gesture_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t synaptics_rmi4_wake_gesture_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count);
+struct synaptics_rmi4_f01_device_status {
+ union {
+ struct {
+ unsigned char status_code:4;
+ unsigned char reserved:2;
+ unsigned char flash_prog:1;
+ unsigned char unconfigured:1;
+ } __packed;
+ unsigned char data[1];
+ };
+};
+
+struct synaptics_rmi4_f11_query_0_5 {
+ union {
+ struct {
+ /* query 0 */
+ unsigned char f11_query0_b0__2:3;
+ unsigned char has_query_9:1;
+ unsigned char has_query_11:1;
+ unsigned char has_query_12:1;
+ unsigned char has_query_27:1;
+ unsigned char has_query_28:1;
+
+ /* query 1 */
+ unsigned char num_of_fingers:3;
+ unsigned char has_rel:1;
+ unsigned char has_abs:1;
+ unsigned char has_gestures:1;
+ unsigned char has_sensitibity_adjust:1;
+ unsigned char f11_query1_b7:1;
+
+ /* query 2 */
+ unsigned char num_of_x_electrodes;
+
+ /* query 3 */
+ unsigned char num_of_y_electrodes;
+
+ /* query 4 */
+ unsigned char max_electrodes:7;
+ unsigned char f11_query4_b7:1;
+
+ /* query 5 */
+ unsigned char abs_data_size:2;
+ unsigned char has_anchored_finger:1;
+ unsigned char has_adj_hyst:1;
+ unsigned char has_dribble:1;
+ unsigned char has_bending_correction:1;
+ unsigned char has_large_object_suppression:1;
+ unsigned char has_jitter_filter:1;
+ } __packed;
+ unsigned char data[6];
+ };
+};
+
+struct synaptics_rmi4_f11_query_7_8 {
+ union {
+ struct {
+ /* query 7 */
+ unsigned char has_single_tap:1;
+ unsigned char has_tap_and_hold:1;
+ unsigned char has_double_tap:1;
+ unsigned char has_early_tap:1;
+ unsigned char has_flick:1;
+ unsigned char has_press:1;
+ unsigned char has_pinch:1;
+ unsigned char has_chiral_scroll:1;
+
+ /* query 8 */
+ unsigned char has_palm_detect:1;
+ unsigned char has_rotate:1;
+ unsigned char has_touch_shapes:1;
+ unsigned char has_scroll_zones:1;
+ unsigned char individual_scroll_zones:1;
+ unsigned char has_multi_finger_scroll:1;
+ unsigned char has_multi_finger_scroll_edge_motion:1;
+ unsigned char has_multi_finger_scroll_inertia:1;
+ } __packed;
+ unsigned char data[2];
+ };
+};
+
+struct synaptics_rmi4_f11_query_9 {
+ union {
+ struct {
+ unsigned char has_pen:1;
+ unsigned char has_proximity:1;
+ unsigned char has_large_object_sensitivity:1;
+ unsigned char has_suppress_on_large_object_detect:1;
+ unsigned char has_two_pen_thresholds:1;
+ unsigned char has_contact_geometry:1;
+ unsigned char has_pen_hover_discrimination:1;
+ unsigned char has_pen_hover_and_edge_filters:1;
+ } __packed;
+ unsigned char data[1];
+ };
+};
+
+struct synaptics_rmi4_f11_query_12 {
+ union {
+ struct {
+ unsigned char has_small_object_detection:1;
+ unsigned char has_small_object_detection_tuning:1;
+ unsigned char has_8bit_w:1;
+ unsigned char has_2d_adjustable_mapping:1;
+ unsigned char has_general_information_2:1;
+ unsigned char has_physical_properties:1;
+ unsigned char has_finger_limit:1;
+ unsigned char has_linear_cofficient_2:1;
+ } __packed;
+ unsigned char data[1];
+ };
+};
+
+struct synaptics_rmi4_f11_query_27 {
+ union {
+ struct {
+ unsigned char f11_query27_b0:1;
+ unsigned char has_pen_position_correction:1;
+ unsigned char has_pen_jitter_filter_coefficient:1;
+ unsigned char has_group_decomposition:1;
+ unsigned char has_wakeup_gesture:1;
+ unsigned char has_small_finger_correction:1;
+ unsigned char has_data_37:1;
+ unsigned char f11_query27_b7:1;
+ } __packed;
+ unsigned char data[1];
+ };
+};
+
+struct synaptics_rmi4_f11_ctrl_6_9 {
+ union {
+ struct {
+ unsigned char sensor_max_x_pos_7_0;
+ unsigned char sensor_max_x_pos_11_8:4;
+ unsigned char f11_ctrl7_b4__7:4;
+ unsigned char sensor_max_y_pos_7_0;
+ unsigned char sensor_max_y_pos_11_8:4;
+ unsigned char f11_ctrl9_b4__7:4;
+ } __packed;
+ unsigned char data[4];
+ };
+};
+
+struct synaptics_rmi4_f11_data_1_5 {
+ union {
+ struct {
+ unsigned char x_position_11_4;
+ unsigned char y_position_11_4;
+ unsigned char x_position_3_0:4;
+ unsigned char y_position_3_0:4;
+ unsigned char wx:4;
+ unsigned char wy:4;
+ unsigned char z;
+ } __packed;
+ unsigned char data[5];
+ };
+};
+
+struct synaptics_rmi4_f12_query_5 {
+ union {
+ struct {
+ unsigned char size_of_query6;
+ struct {
+ unsigned char ctrl0_is_present:1;
+ unsigned char ctrl1_is_present:1;
+ unsigned char ctrl2_is_present:1;
+ unsigned char ctrl3_is_present:1;
+ unsigned char ctrl4_is_present:1;
+ unsigned char ctrl5_is_present:1;
+ unsigned char ctrl6_is_present:1;
+ unsigned char ctrl7_is_present:1;
+ } __packed;
+ struct {
+ unsigned char ctrl8_is_present:1;
+ unsigned char ctrl9_is_present:1;
+ unsigned char ctrl10_is_present:1;
+ unsigned char ctrl11_is_present:1;
+ unsigned char ctrl12_is_present:1;
+ unsigned char ctrl13_is_present:1;
+ unsigned char ctrl14_is_present:1;
+ unsigned char ctrl15_is_present:1;
+ } __packed;
+ struct {
+ unsigned char ctrl16_is_present:1;
+ unsigned char ctrl17_is_present:1;
+ unsigned char ctrl18_is_present:1;
+ unsigned char ctrl19_is_present:1;
+ unsigned char ctrl20_is_present:1;
+ unsigned char ctrl21_is_present:1;
+ unsigned char ctrl22_is_present:1;
+ unsigned char ctrl23_is_present:1;
+ } __packed;
+ struct {
+ unsigned char ctrl24_is_present:1;
+ unsigned char ctrl25_is_present:1;
+ unsigned char ctrl26_is_present:1;
+ unsigned char ctrl27_is_present:1;
+ unsigned char ctrl28_is_present:1;
+ unsigned char ctrl29_is_present:1;
+ unsigned char ctrl30_is_present:1;
+ unsigned char ctrl31_is_present:1;
+ } __packed;
+ };
+ unsigned char data[5];
+ };
+};
+
+struct synaptics_rmi4_f12_query_8 {
+ union {
+ struct {
+ unsigned char size_of_query9;
+ struct {
+ unsigned char data0_is_present:1;
+ unsigned char data1_is_present:1;
+ unsigned char data2_is_present:1;
+ unsigned char data3_is_present:1;
+ unsigned char data4_is_present:1;
+ unsigned char data5_is_present:1;
+ unsigned char data6_is_present:1;
+ unsigned char data7_is_present:1;
+ } __packed;
+ struct {
+ unsigned char data8_is_present:1;
+ unsigned char data9_is_present:1;
+ unsigned char data10_is_present:1;
+ unsigned char data11_is_present:1;
+ unsigned char data12_is_present:1;
+ unsigned char data13_is_present:1;
+ unsigned char data14_is_present:1;
+ unsigned char data15_is_present:1;
+ } __packed;
+ };
+ unsigned char data[3];
+ };
+};
+
+struct synaptics_rmi4_f12_ctrl_8 {
+ union {
+ struct {
+ unsigned char max_x_coord_lsb;
+ unsigned char max_x_coord_msb;
+ unsigned char max_y_coord_lsb;
+ unsigned char max_y_coord_msb;
+ unsigned char rx_pitch_lsb;
+ unsigned char rx_pitch_msb;
+ unsigned char tx_pitch_lsb;
+ unsigned char tx_pitch_msb;
+ unsigned char low_rx_clip;
+ unsigned char high_rx_clip;
+ unsigned char low_tx_clip;
+ unsigned char high_tx_clip;
+ unsigned char num_of_rx;
+ unsigned char num_of_tx;
+ };
+ unsigned char data[14];
+ };
+};
+
+struct synaptics_rmi4_f12_ctrl_23 {
+ union {
+ struct {
+ unsigned char obj_type_enable;
+ unsigned char max_reported_objects;
+ };
+ unsigned char data[2];
+ };
+};
+
+struct synaptics_rmi4_f12_finger_data {
+ unsigned char object_type_and_status;
+ unsigned char x_lsb;
+ unsigned char x_msb;
+ unsigned char y_lsb;
+ unsigned char y_msb;
+#ifdef REPORT_2D_Z
+ unsigned char z;
+#endif
+#ifdef REPORT_2D_W
+ unsigned char wx;
+ unsigned char wy;
+#endif
+};
+
+struct synaptics_rmi4_f1a_query {
+ union {
+ struct {
+ unsigned char max_button_count:3;
+ unsigned char reserved:5;
+ unsigned char has_general_control:1;
+ unsigned char has_interrupt_enable:1;
+ unsigned char has_multibutton_select:1;
+ unsigned char has_tx_rx_map:1;
+ unsigned char has_perbutton_threshold:1;
+ unsigned char has_release_threshold:1;
+ unsigned char has_strongestbtn_hysteresis:1;
+ unsigned char has_filter_strength:1;
+ } __packed;
+ unsigned char data[2];
+ };
+};
+
+struct synaptics_rmi4_f1a_control_0 {
+ union {
+ struct {
+ unsigned char multibutton_report:2;
+ unsigned char filter_mode:2;
+ unsigned char reserved:4;
+ } __packed;
+ unsigned char data[1];
+ };
+};
+
+struct synaptics_rmi4_f1a_control {
+ struct synaptics_rmi4_f1a_control_0 general_control;
+ unsigned char button_int_enable;
+ unsigned char multi_button;
+ unsigned char *txrx_map;
+ unsigned char *button_threshold;
+ unsigned char button_release_threshold;
+ unsigned char strongest_button_hysteresis;
+ unsigned char filter_strength;
+};
+
+struct synaptics_rmi4_f1a_handle {
+ int button_bitmask_size;
+ unsigned int max_count;
+ unsigned char valid_button_count;
+ unsigned char *button_data_buffer;
+ unsigned int *button_map;
+ struct synaptics_rmi4_f1a_query button_query;
+ struct synaptics_rmi4_f1a_control button_control;
+};
+
+struct synaptics_rmi4_exp_fhandler {
+ struct synaptics_rmi4_exp_fn *exp_fn;
+ bool insert;
+ bool remove;
+ struct list_head link;
+};
+
+struct synaptics_rmi4_exp_fn_data {
+ bool initialized;
+ bool queue_work;
+ struct mutex mutex;
+ struct list_head list;
+ struct delayed_work work;
+ struct workqueue_struct *workqueue;
+ struct synaptics_rmi4_data *rmi4_data;
+};
+
+static struct synaptics_rmi4_exp_fn_data exp_data;
+
+static struct device_attribute attrs[] = {
+ __ATTR(reset, 0660,
+ synaptics_rmi4_show_error,
+ synaptics_rmi4_f01_reset_store),
+ __ATTR(productinfo, 0444,
+ synaptics_rmi4_f01_productinfo_show,
+ synaptics_rmi4_store_error),
+ __ATTR(buildid, 0444,
+ synaptics_rmi4_f01_buildid_show,
+ synaptics_rmi4_store_error),
+ __ATTR(flashprog, 0444,
+ synaptics_rmi4_f01_flashprog_show,
+ synaptics_rmi4_store_error),
+ __ATTR(0dbutton, 0660,
+ synaptics_rmi4_0dbutton_show,
+ synaptics_rmi4_0dbutton_store),
+ __ATTR(suspend, 0660,
+ synaptics_rmi4_show_error,
+ synaptics_rmi4_suspend_store),
+ __ATTR(wake_gesture, 0660,
+ synaptics_rmi4_wake_gesture_show,
+ synaptics_rmi4_wake_gesture_store),
+};
+
+static ssize_t synaptics_rmi4_f01_reset_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int retval;
+ unsigned int reset;
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
+
+ if (sscanf(buf, "%u", &reset) != 1)
+ return -EINVAL;
+
+ if (reset != 1)
+ return -EINVAL;
+
+ retval = synaptics_rmi4_reset_device(rmi4_data);
+ if (retval < 0) {
+ dev_err(dev,
+ "%s: Failed to issue reset command, error = %d\n",
+ __func__, retval);
+ return retval;
+ }
+
+ return count;
+}
+
+static ssize_t synaptics_rmi4_f01_productinfo_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
+
+ return snprintf(buf, PAGE_SIZE, "0x%02x 0x%02x\n",
+ (rmi4_data->rmi4_mod_info.product_info[0]),
+ (rmi4_data->rmi4_mod_info.product_info[1]));
+}
+
+static ssize_t synaptics_rmi4_f01_buildid_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n",
+ rmi4_data->firmware_id);
+}
+
+static ssize_t synaptics_rmi4_f01_flashprog_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int retval;
+ struct synaptics_rmi4_f01_device_status device_status;
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_data_base_addr,
+ device_status.data,
+ sizeof(device_status.data));
+ if (retval < 0) {
+ dev_err(dev,
+ "%s: Failed to read device status, error = %d\n",
+ __func__, retval);
+ return retval;
+ }
+
+ return snprintf(buf, PAGE_SIZE, "%u\n",
+ device_status.flash_prog);
+}
+
+static ssize_t synaptics_rmi4_0dbutton_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n",
+ rmi4_data->button_0d_enabled);
+}
+
+static ssize_t synaptics_rmi4_0dbutton_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int retval;
+ unsigned int input;
+ unsigned char ii;
+ unsigned char intr_enable;
+ struct synaptics_rmi4_fn *fhandler;
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
+ struct synaptics_rmi4_device_info *rmi;
+
+ rmi = &(rmi4_data->rmi4_mod_info);
+
+ if (sscanf(buf, "%u", &input) != 1)
+ return -EINVAL;
+
+ input = input > 0 ? 1 : 0;
+
+ if (rmi4_data->button_0d_enabled == input)
+ return count;
+
+ if (list_empty(&rmi->support_fn_list))
+ return -ENODEV;
+
+ list_for_each_entry(fhandler, &rmi->support_fn_list, link) {
+ if (fhandler->fn_number == SYNAPTICS_RMI4_F1A) {
+ ii = fhandler->intr_reg_num;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_ctrl_base_addr + 1 + ii,
+ &intr_enable,
+ sizeof(intr_enable));
+ if (retval < 0)
+ return retval;
+
+ if (input == 1)
+ intr_enable |= fhandler->intr_mask;
+ else
+ intr_enable &= ~fhandler->intr_mask;
+
+ retval = synaptics_rmi4_i2c_write(rmi4_data,
+ rmi4_data->f01_ctrl_base_addr + 1 + ii,
+ &intr_enable,
+ sizeof(intr_enable));
+ if (retval < 0)
+ return retval;
+ }
+ }
+
+ rmi4_data->button_0d_enabled = input;
+
+ return count;
+}
+
+static ssize_t synaptics_rmi4_suspend_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned int input;
+
+ if (sscanf(buf, "%u", &input) != 1)
+ return -EINVAL;
+
+ if (input == 1)
+ synaptics_rmi4_suspend(dev);
+ else if (input == 0)
+ synaptics_rmi4_resume(dev);
+ else
+ return -EINVAL;
+
+ return count;
+}
+
+
+static ssize_t synaptics_rmi4_wake_gesture_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n",
+ rmi4_data->enable_wakeup_gesture);
+}
+
+static ssize_t synaptics_rmi4_wake_gesture_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ unsigned int input;
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
+
+ if (sscanf(buf, "%u", &input) != 1)
+ return -EINVAL;
+
+ input = input > 0 ? 1 : 0;
+
+ if (rmi4_data->f11_wakeup_gesture || rmi4_data->f12_wakeup_gesture)
+ rmi4_data->enable_wakeup_gesture = input;
+
+ return count;
+}
+
+static int tpd_set_page(struct synaptics_rmi4_data *rmi4_data,
+ unsigned short addr)
+{
+ int retval = 0;
+ unsigned char retry;
+ unsigned char buf[PAGE_SELECT_LEN];
+ unsigned char page;
+ struct i2c_client *i2c = rmi4_data->i2c_client;
+
+ page = ((addr >> 8) & MASK_8BIT);
+ if (page != rmi4_data->current_page) {
+ buf[0] = MASK_8BIT;
+ buf[1] = page;
+ for (retry = 0; retry < SYN_I2C_RETRY_TIMES; retry++) {
+ retval = i2c_master_send(i2c, buf, PAGE_SELECT_LEN);
+ if (retval != PAGE_SELECT_LEN) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: I2C retry %d\n", __func__, retry + 1);
+ msleep(20);
+ if (retry == (SYN_I2C_RETRY_TIMES / 2)) {
+ if (i2c->addr == rmi4_data->i2c_addr)
+ i2c->addr = UBL_I2C_ADDR;
+ else
+ i2c->addr = rmi4_data->i2c_addr;
+ }
+ } else {
+ rmi4_data->current_page = page;
+ break;
+ }
+ }
+ } else {
+ retval = PAGE_SELECT_LEN;
+ }
+
+ return retval;
+}
+
+
+int tpd_i2c_read_data(struct synaptics_rmi4_data *rmi4_data, struct i2c_client *client,
+ unsigned short addr, unsigned char *data, unsigned short length)
+{
+
+ unsigned char retry = 0;
+ unsigned char *pData = data;
+ unsigned char tmp_addr = (unsigned char)addr;
+ int retval = 0;
+ int left_len = length;
+
+ /* u16 old_flag; */
+ mutex_lock(&(rmi4_data->rmi4_io_ctrl_mutex));
+
+ retval = tpd_set_page(rmi4_data, addr);
+ if (retval != PAGE_SELECT_LEN) {
+ retval = -EIO;
+ goto exit;
+ }
+
+ retval = i2c_master_send(client, &tmp_addr, 1);
+ while (left_len > 0) {
+ for (retry = 0; retry < SYN_I2C_RETRY_TIMES; retry++) {
+ if (left_len > 8)
+ retval = i2c_master_recv(client, pData, 8);
+ else
+ retval = i2c_master_recv(client, pData, left_len);
+ if (retval <= 0) {
+ dev_err(&client->dev, "%s: I2C retry %d\n", __func__, retry + 1);
+ msleep(20);
+ if (retry == (SYN_I2C_RETRY_TIMES / 2)) {
+ if (client->addr == rmi4_data->i2c_addr)
+ client->addr = UBL_I2C_ADDR;
+ else
+ client->addr = rmi4_data->i2c_addr;
+ }
+ left_len = length;
+ pData = data;
+ retval = i2c_master_send(client, &tmp_addr, 1);
+ continue;
+ } else {
+ break;
+ }
+ }
+ if (retry == SYN_I2C_RETRY_TIMES) {
+ retval = -EIO;
+ goto exit;
+ }
+ left_len -= 8;
+ pData += 8;
+ }
+exit:
+ mutex_unlock(&(rmi4_data->rmi4_io_ctrl_mutex));
+
+ return retval;
+}
+EXPORT_SYMBOL(tpd_i2c_read_data);
+
+#ifdef USE_I2C_DMA
+int tpd_i2c_write_data_dma(struct synaptics_rmi4_data *rmi4_data, struct i2c_client *client,
+ unsigned short addr, unsigned char *data, unsigned short length)
+{
+ int retval = 0;
+ unsigned char retry;
+ unsigned char *buf_va = NULL;
+ struct i2c_msg msg[1];
+
+ mutex_lock(&(rmi4_data->rmi4_io_ctrl_mutex));
+
+ msg[0].addr = rmi4_data->i2c_client->addr;
+ msg[0].flags = 0;
+ msg[0].len = length + 1;
+ msg[0].ext_flag = (rmi4_data->i2c_client->ext_flag | I2C_ENEXT_FLAG | I2C_DMA_FLAG),
+ msg[0].buf = (unsigned char *)(uintptr_t)wDMABuf_pa;
+ msg[0].timing = 400;
+
+ retval = tpd_set_page(rmi4_data, addr);
+ if (retval != PAGE_SELECT_LEN) {
+ retval = -EIO;
+ goto exit;
+ }
+
+ buf_va = wDMABuf_va;
+ buf_va[0] = addr & MASK_8BIT;
+ memcpy(&buf_va[1], &data[0], length);
+
+ for (retry = 0; retry < SYN_I2C_RETRY_TIMES; retry++) {
+ if (i2c_transfer(rmi4_data->i2c_client->adapter, msg, 1) == 1) {
+ retval = length;
+ break;
+ }
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: I2C retry %d\n",
+ __func__, retry + 1);
+ msleep(20);
+
+ if (retry == (SYN_I2C_RETRY_TIMES / 2)) {
+ if (rmi4_data->i2c_client->addr == rmi4_data->i2c_addr)
+ rmi4_data->i2c_client->addr = UBL_I2C_ADDR;
+ else
+ rmi4_data->i2c_client->addr = rmi4_data->i2c_addr;
+ msg[0].addr = rmi4_data->i2c_client->addr;
+ }
+ }
+
+ if (retry == SYN_I2C_RETRY_TIMES) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: I2C write over retry limit\n",
+ __func__);
+ retval = -EIO;
+ }
+
+exit:
+ mutex_unlock(&(rmi4_data->rmi4_io_ctrl_mutex));
+
+ return retval;
+}
+EXPORT_SYMBOL(tpd_i2c_write_data_dma);
+
+#else
+int tpd_i2c_write_data(struct synaptics_rmi4_data *rmi4_data, struct i2c_client *client,
+ unsigned short addr, unsigned char *data, unsigned short length)
+{
+ int retval = 0;
+ u8 retry = 0;
+ u8 *buf;
+ int tmp_addr = addr;
+
+
+ mutex_lock(&(rmi4_data->rmi4_io_ctrl_mutex));
+
+ retval = tpd_set_page(rmi4_data, addr);
+ if (retval != PAGE_SELECT_LEN) {
+ pr_err("tpd_set_page fail, retval = %d\n", retval);
+ retval = -EIO;
+ goto exit;
+ }
+
+ buf = kzalloc(sizeof(unsigned char) * (length + 1), GFP_KERNEL);
+ *buf = tmp_addr;
+ memcpy(buf + 1, data, length);
+ for (retry = 0; retry < SYN_I2C_RETRY_TIMES; retry++) {
+ retval = i2c_master_send(client, buf, (length + 1));
+ if (retval <= 0) {
+ dev_err(&client->dev, "%s: I2C retry %d\n", __func__, retry + 1);
+ msleep(20);
+ continue;
+ } else {
+ break;
+ }
+ }
+ kfree(buf);
+
+exit:
+ mutex_unlock(&(rmi4_data->rmi4_io_ctrl_mutex));
+
+ return retval;
+}
+EXPORT_SYMBOL(tpd_i2c_write_data);
+
+#endif
+
+ /**
+ * synaptics_rmi4_i2c_read()
+ *
+ * Called by various functions in this driver, and also exported to
+ * other expansion Function modules such as rmi_dev.
+ *
+ * This function reads data of an arbitrary length from the sensor,
+ * starting from an assigned register address of the sensor, via I2C
+ * with a retry mechanism.
+ */
+static int synaptics_rmi4_i2c_read(struct synaptics_rmi4_data *rmi4_data,
+ unsigned short addr, unsigned char *data, unsigned short length)
+{
+ return tpd_i2c_read_data(rmi4_data, rmi4_data->i2c_client, addr, data, length);
+}
+
+ /**
+ * synaptics_rmi4_i2c_write()
+ *
+ * Called by various functions in this driver, and also exported to
+ * other expansion Function modules such as rmi_dev.
+ *
+ * This function writes data of an arbitrary length to the sensor,
+ * starting from an assigned register address of the sensor, via I2C with
+ * a retry mechanism.
+ */
+static int synaptics_rmi4_i2c_write(struct synaptics_rmi4_data *rmi4_data,
+ unsigned short addr, unsigned char *data, unsigned short length)
+{
+#ifdef USE_I2C_DMA
+ return tpd_i2c_write_data_dma(rmi4_data, rmi4_data->i2c_client, addr, data, length);
+#else
+ return tpd_i2c_write_data(rmi4_data, rmi4_data->i2c_client, addr, data, length);
+#endif
+}
+
+ /**
+ * synaptics_rmi4_f11_abs_report()
+ *
+ * Called by synaptics_rmi4_report_touch() when valid Function $11
+ * finger data has been detected.
+ *
+ * This function reads the Function $11 data registers, determines the
+ * status of each finger supported by the Function, processes any
+ * necessary coordinate manipulation, reports the finger data to
+ * the input subsystem, and returns the number of fingers detected.
+ */
+static int synaptics_rmi4_f11_abs_report(struct synaptics_rmi4_data *rmi4_data,
+ struct synaptics_rmi4_fn *fhandler)
+{
+ int retval;
+ unsigned char touch_count = 0; /* number of touch points */
+ unsigned char reg_index;
+ unsigned char finger;
+ unsigned char fingers_supported;
+ unsigned char num_of_finger_status_regs;
+ unsigned char finger_shift;
+ unsigned char finger_status;
+ unsigned char finger_status_reg[3];
+ unsigned char detected_gestures;
+ unsigned short data_addr;
+ unsigned short data_offset;
+ int x;
+ int y;
+ int wx;
+ int wy;
+ //int temp;
+ struct synaptics_rmi4_f11_data_1_5 data;
+ struct synaptics_rmi4_f11_extra_data *extra_data;
+
+ /*
+ * The number of finger status registers is determined by the
+ * maximum number of fingers supported - 2 bits per finger. So
+ * the number of finger status registers to read is:
+ * register_count = ceil(max_num_of_fingers / 4)
+ */
+ fingers_supported = fhandler->num_of_data_points;
+ num_of_finger_status_regs = (fingers_supported + 3) / 4;
+ data_addr = fhandler->full_addr.data_base;
+
+ extra_data = (struct synaptics_rmi4_f11_extra_data *)fhandler->extra;
+
+ if (rmi4_data->sensor_sleep && rmi4_data->enable_wakeup_gesture) {
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ data_addr + extra_data->data38_offset,
+ &detected_gestures,
+ sizeof(detected_gestures));
+ if (retval < 0)
+ return 0;
+
+ if (detected_gestures) {
+ input_report_key(rmi4_data->input_dev, KEY_POWER, 1);
+ input_sync(rmi4_data->input_dev);
+ input_report_key(rmi4_data->input_dev, KEY_POWER, 0);
+ input_sync(rmi4_data->input_dev);
+ rmi4_data->sensor_sleep = false;
+ }
+
+ return 0;
+ }
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ data_addr,
+ finger_status_reg,
+ num_of_finger_status_regs);
+ if (retval < 0)
+ return 0;
+ mutex_lock(&rmi4_report_mutex);
+ for (finger = 0; finger < fingers_supported; finger++) {
+ reg_index = finger / 4;
+ finger_shift = (finger % 4) * 2;
+ finger_status = (finger_status_reg[reg_index] >> finger_shift)
+ & MASK_2BIT;
+
+ /*
+ * Each 2-bit finger status field represents the following:
+ * 00 = finger not present
+ * 01 = finger present and data accurate
+ * 10 = finger present but data may be inaccurate
+ * 11 = reserved
+ */
+#ifdef TYPE_B_PROTOCOL
+ input_mt_slot(rmi4_data->input_dev, finger);
+ input_mt_report_slot_state(rmi4_data->input_dev,
+ MT_TOOL_FINGER, finger_status);
+#endif
+
+ if (finger_status) {
+ data_offset = data_addr +
+ num_of_finger_status_regs +
+ (finger * sizeof(data.data));
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ data_offset,
+ data.data,
+ sizeof(data.data));
+ if (retval < 0) {
+ touch_count = 0;
+ goto exit;
+ }
+
+ x = (data.x_position_11_4 << 4) | data.x_position_3_0;
+ y = (data.y_position_11_4 << 4) | data.y_position_3_0;
+ wx = data.wx;
+ wy = data.wy;
+
+ input_report_key(rmi4_data->input_dev,
+ BTN_TOUCH, 1);
+ input_report_key(rmi4_data->input_dev,
+ BTN_TOOL_FINGER, 1);
+ input_report_abs(rmi4_data->input_dev,
+ ABS_MT_POSITION_X, x);
+ input_report_abs(rmi4_data->input_dev,
+ ABS_MT_POSITION_Y, y);
+#ifdef REPORT_2D_W
+ input_report_abs(rmi4_data->input_dev,
+ ABS_MT_TOUCH_MAJOR, max(wx, wy));
+ input_report_abs(rmi4_data->input_dev,
+ ABS_MT_TOUCH_MINOR, min(wx, wy));
+#endif
+#ifndef TYPE_B_PROTOCOL
+ input_mt_sync(rmi4_data->input_dev);
+#endif
+
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Finger %d:\n"
+ "status = 0x%02x\n"
+ "x = %d\n"
+ "y = %d\n"
+ "wx = %d\n"
+ "wy = %d\n",
+ __func__, finger,
+ finger_status,
+ x, y, wx, wy);
+
+ touch_count++;
+ }
+ }
+
+ if (touch_count == 0) {
+ input_report_key(rmi4_data->input_dev,
+ BTN_TOUCH, 0);
+ input_report_key(rmi4_data->input_dev,
+ BTN_TOOL_FINGER, 0);
+#ifndef TYPE_B_PROTOCOL
+ input_mt_sync(rmi4_data->input_dev);
+#endif
+ }
+
+ input_sync(rmi4_data->input_dev);
+exit:
+ mutex_unlock(&(rmi4_report_mutex));
+ return touch_count;
+}
+
+ /**
+ * synaptics_rmi4_f12_abs_report()
+ *
+ * Called by synaptics_rmi4_report_touch() when valid Function $12
+ * finger data has been detected.
+ *
+ * This function reads the Function $12 data registers, determines the
+ * status of each finger supported by the Function, processes any
+ * necessary coordinate manipulation, reports the finger data to
+ * the input subsystem, and returns the number of fingers detected.
+ */
+static int synaptics_rmi4_f12_abs_report(struct synaptics_rmi4_data *rmi4_data,
+ struct synaptics_rmi4_fn *fhandler)
+{
+ int retval;
+ unsigned char touch_count = 0; /* number of touch points */
+ unsigned char finger;
+ unsigned char fingers_to_process;
+ unsigned char finger_status;
+ unsigned char size_of_2d_data;
+ unsigned char detected_gestures[F12_GESTURE_DETECTION_LEN]; // byte0 indicate gesture type, byte1~byte4 are gesture parameter
+ unsigned short data_addr;
+ int x;
+ int y;
+ int wx;
+ int wy;
+ int temp;
+ struct synaptics_rmi4_f12_extra_data *extra_data;
+ struct synaptics_rmi4_f12_finger_data *data;
+ struct synaptics_rmi4_f12_finger_data *finger_data;
+#ifdef F12_DATA_15_WORKAROUND
+ static unsigned char fingers_already_present;
+#endif
+
+ fingers_to_process = fhandler->num_of_data_points;
+ data_addr = fhandler->full_addr.data_base;
+ extra_data = (struct synaptics_rmi4_f12_extra_data *)fhandler->extra;
+ size_of_2d_data = sizeof(struct synaptics_rmi4_f12_finger_data);
+
+
+ if (rmi4_data->sensor_sleep && rmi4_data->enable_wakeup_gesture) {
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ data_addr + extra_data->data4_offset,
+ detected_gestures,
+ sizeof(detected_gestures));
+ if (retval < 0)
+ return 0;
+
+ if (detected_gestures[0] && (detected_gestures[0] != F12_UDG_DETECT)) { // here is demo only, customer could decode gesture data and do whatever they want
+ input_report_key(rmi4_data->input_dev, KEY_POWER, 1);
+ input_sync(rmi4_data->input_dev);
+ input_report_key(rmi4_data->input_dev, KEY_POWER, 0);
+ input_sync(rmi4_data->input_dev);
+ rmi4_data->sensor_sleep = false;
+ }
+
+ return 0;
+ }
+
+
+ /* Determine the total number of fingers to process */
+ if (extra_data->data15_size) {
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ data_addr + extra_data->data15_offset,
+ extra_data->data15_data,
+ extra_data->data15_size);
+ if (retval < 0)
+ return 0;
+
+ /* Start checking from the highest bit */
+ temp = extra_data->data15_size - 1; /* Highest byte */
+ finger = (fingers_to_process - 1) % 8; /* Highest bit */
+ do {
+ if (extra_data->data15_data[temp] & (1 << finger))
+ break;
+
+ if (finger) {
+ finger--;
+ } else {
+ temp--; /* Move to the next lower byte */
+ finger = 7;
+ }
+
+ fingers_to_process--;
+ } while (fingers_to_process);
+
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Number of fingers to process = %d\n",
+ __func__, fingers_to_process);
+ }
+
+#ifdef F12_DATA_15_WORKAROUND
+ fingers_to_process = max(fingers_to_process, fingers_already_present);
+#endif
+
+ if (!fingers_to_process) {
+ synaptics_rmi4_free_fingers(rmi4_data);
+ return 0;
+ }
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ data_addr + extra_data->data1_offset,
+ (unsigned char *)fhandler->data,
+ fingers_to_process * size_of_2d_data);
+ if (retval < 0)
+ return 0;
+
+ data = (struct synaptics_rmi4_f12_finger_data *)fhandler->data;
+ mutex_lock(&rmi4_report_mutex);
+ for (finger = 0; finger < fingers_to_process; finger++) {
+ finger_data = data + finger;
+ finger_status = finger_data->object_type_and_status & MASK_1BIT;
+
+#ifdef TYPE_B_PROTOCOL
+ input_mt_slot(rmi4_data->input_dev, finger);
+ input_mt_report_slot_state(rmi4_data->input_dev,
+ MT_TOOL_FINGER, finger_status);
+#endif
+
+ if (finger_status) {
+#ifdef F12_DATA_15_WORKAROUND
+ fingers_already_present = finger + 1;
+#endif
+
+ x = (finger_data->x_msb << 8) | (finger_data->x_lsb);
+ y = (finger_data->y_msb << 8) | (finger_data->y_lsb);
+#ifdef REPORT_2D_W
+ wx = finger_data->wx;
+ wy = finger_data->wy;
+#endif
+
+ input_report_key(rmi4_data->input_dev,
+ BTN_TOUCH, 1);
+ input_report_key(rmi4_data->input_dev,
+ BTN_TOOL_FINGER, 1);
+ input_report_abs(rmi4_data->input_dev,
+ ABS_MT_POSITION_X, x);
+ input_report_abs(rmi4_data->input_dev,
+ ABS_MT_POSITION_Y, y);
+#ifdef REPORT_2D_W
+ input_report_abs(rmi4_data->input_dev,
+ ABS_MT_TOUCH_MAJOR, max(wx, wy));
+ input_report_abs(rmi4_data->input_dev,
+ ABS_MT_TOUCH_MINOR, min(wx, wy));
+#endif
+#ifndef TYPE_B_PROTOCOL
+ input_mt_sync(rmi4_data->input_dev);
+#endif
+
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Finger %d:\n"
+ "status = 0x%02x\n"
+ "x = %d\n"
+ "y = %d\n"
+ "wx = %d\n"
+ "wy = %d\n",
+ __func__, finger,
+ finger_status,
+ x, y, wx, wy);
+
+ touch_count++;
+ }
+ }
+
+ if (touch_count == 0) {
+ input_report_key(rmi4_data->input_dev,
+ BTN_TOUCH, 0);
+ input_report_key(rmi4_data->input_dev,
+ BTN_TOOL_FINGER, 0);
+#ifndef TYPE_B_PROTOCOL
+ input_mt_sync(rmi4_data->input_dev);
+#endif
+ }
+
+ input_sync(rmi4_data->input_dev);
+ mutex_unlock(&rmi4_report_mutex);
+ return touch_count;
+}
+
+static void synaptics_rmi4_f1a_report(struct synaptics_rmi4_data *rmi4_data,
+ struct synaptics_rmi4_fn *fhandler)
+{
+ int retval;
+ unsigned char touch_count = 0;
+ unsigned char button;
+ unsigned char index;
+ unsigned char shift;
+ unsigned char status;
+ unsigned char *data;
+ unsigned short data_addr = fhandler->full_addr.data_base;
+ struct synaptics_rmi4_f1a_handle *f1a = fhandler->data;
+ static unsigned char do_once = 1;
+ static bool current_status[MAX_NUMBER_OF_BUTTONS];
+#ifdef NO_0D_WHILE_2D
+ static bool before_2d_status[MAX_NUMBER_OF_BUTTONS];
+ static bool while_2d_status[MAX_NUMBER_OF_BUTTONS];
+#endif
+
+ if (do_once) {
+ memset(current_status, 0, sizeof(current_status));
+#ifdef NO_0D_WHILE_2D
+ memset(before_2d_status, 0, sizeof(before_2d_status));
+ memset(while_2d_status, 0, sizeof(while_2d_status));
+#endif
+ do_once = 0;
+ }
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ data_addr,
+ f1a->button_data_buffer,
+ f1a->button_bitmask_size);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to read button data registers\n",
+ __func__);
+ return;
+ }
+
+ data = f1a->button_data_buffer;
+ mutex_lock(&rmi4_report_mutex);
+ for (button = 0; button < f1a->valid_button_count; button++) {
+ index = button / 8;
+ shift = button % 8;
+ status = ((data[index] >> shift) & MASK_1BIT);
+
+ if (current_status[button] == status)
+ continue;
+ else
+ current_status[button] = status;
+
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Button %d (code %d) ->%d\n",
+ __func__, button,
+ f1a->button_map[button],
+ status);
+#ifdef NO_0D_WHILE_2D
+ if (rmi4_data->fingers_on_2d == false) {
+ if (status == 1) {
+ before_2d_status[button] = 1;
+ } else {
+ if (while_2d_status[button] == 1) {
+ while_2d_status[button] = 0;
+ continue;
+ } else {
+ before_2d_status[button] = 0;
+ }
+ }
+ touch_count++;
+ input_report_key(rmi4_data->input_dev,
+ f1a->button_map[button],
+ status);
+ } else {
+ if (before_2d_status[button] == 1) {
+ before_2d_status[button] = 0;
+ touch_count++;
+ input_report_key(rmi4_data->input_dev,
+ f1a->button_map[button],
+ status);
+ } else {
+ if (status == 1)
+ while_2d_status[button] = 1;
+ else
+ while_2d_status[button] = 0;
+ }
+ }
+#else
+ touch_count++;
+ input_report_key(rmi4_data->input_dev,
+ f1a->button_map[button],
+ status);
+#endif
+ }
+
+ if (touch_count)
+ input_sync(rmi4_data->input_dev);
+ mutex_unlock(&rmi4_report_mutex);
+ return;
+}
+
+ /**
+ * synaptics_rmi4_report_touch()
+ *
+ * Called by synaptics_rmi4_sensor_report().
+ *
+ * This function calls the appropriate finger data reporting function
+ * based on the function handler it receives and returns the number of
+ * fingers detected.
+ */
+static void synaptics_rmi4_report_touch(struct synaptics_rmi4_data *rmi4_data,
+ struct synaptics_rmi4_fn *fhandler)
+{
+ unsigned char touch_count_2d;
+
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Function %02x reporting\n",
+ __func__, fhandler->fn_number);
+
+ switch (fhandler->fn_number) {
+ case SYNAPTICS_RMI4_F11:
+ touch_count_2d = synaptics_rmi4_f11_abs_report(rmi4_data,
+ fhandler);
+
+ if (touch_count_2d)
+ rmi4_data->fingers_on_2d = true;
+ else
+ rmi4_data->fingers_on_2d = false;
+ break;
+ case SYNAPTICS_RMI4_F12:
+ touch_count_2d = synaptics_rmi4_f12_abs_report(rmi4_data,
+ fhandler);
+ if (touch_count_2d)
+ rmi4_data->fingers_on_2d = true;
+ else
+ rmi4_data->fingers_on_2d = false;
+ break;
+ case SYNAPTICS_RMI4_F1A:
+ synaptics_rmi4_f1a_report(rmi4_data, fhandler);
+ break;
+ default:
+ break;
+ }
+
+ return;
+}
+
+ /**
+ * synaptics_rmi4_sensor_report()
+ *
+ * Called by synaptics_rmi4_irq().
+ *
+ * This function determines the interrupt source(s) from the sensor
+ * and calls synaptics_rmi4_report_touch() with the appropriate
+ * function handler for each function with valid data inputs.
+ */
+static void synaptics_rmi4_sensor_report(struct synaptics_rmi4_data *rmi4_data)
+{
+ int retval;
+ unsigned char data[MAX_INTR_REGISTERS + 1];
+ unsigned char *intr = &data[1];
+ struct synaptics_rmi4_f01_device_status status;
+ struct synaptics_rmi4_fn *fhandler;
+ struct synaptics_rmi4_exp_fhandler *exp_fhandler;
+ struct synaptics_rmi4_device_info *rmi;
+
+ rmi = &(rmi4_data->rmi4_mod_info);
+
+ /*
+ * Get interrupt status information from F01 Data1 register to
+ * determine the source(s) that are flagging the interrupt.
+ */
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_data_base_addr,
+ data,
+ rmi4_data->num_of_intr_regs + 1);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to read interrupt status\n",
+ __func__);
+ return;
+ }
+
+ status.data[0] = data[0];
+ if (status.unconfigured && !status.flash_prog) {
+ pr_notice("%s: spontaneous reset detected\n", __func__);
+ retval = synaptics_rmi4_reinit_device(rmi4_data);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to reinit device\n",
+ __func__);
+ }
+ return;
+ }
+
+ /*
+ * Traverse the function handler list and service the source(s)
+ * of the interrupt accordingly.
+ */
+ if (!list_empty(&rmi->support_fn_list)) {
+ list_for_each_entry(fhandler, &rmi->support_fn_list, link) {
+ if (fhandler->num_of_data_sources) {
+ if (fhandler->intr_mask &
+ intr[fhandler->intr_reg_num]) {
+ synaptics_rmi4_report_touch(rmi4_data,
+ fhandler);
+ }
+ }
+ }
+ }
+
+ mutex_lock(&exp_data.mutex);
+ if (!list_empty(&exp_data.list)) {
+ list_for_each_entry(exp_fhandler, &exp_data.list, link) {
+ if (!exp_fhandler->insert &&
+ !exp_fhandler->remove &&
+ (exp_fhandler->exp_fn->attn != NULL))
+ exp_fhandler->exp_fn->attn(rmi4_data, intr[0]);
+ }
+ }
+ mutex_unlock(&exp_data.mutex);
+
+ return;
+}
+
+ /**
+ * synaptics_rmi4_irq()
+ *
+ * Called by the kernel when an interrupt occurs (when the sensor
+ * asserts the attention irq).
+ *
+ * This function is the ISR thread and handles the acquisition
+ * and the reporting of finger data when the presence of fingers
+ * is detected.
+ */
+#ifdef CONFIG_OF_TOUCH
+static irqreturn_t tpd_eint_handler(unsigned int irq, struct irq_desc *desc)
+{
+ disable_irq_nosync(touch_irq);
+
+ tpd_flag = 1;
+ wake_up_interruptible(&waiter);
+ return IRQ_HANDLED;
+}
+#else
+static void tpd_eint_handler(void)
+{
+ tpd_flag = 1;
+ wake_up_interruptible(&waiter);
+}
+#endif
+
+static int touch_event_handler(void *data)
+{
+ struct synaptics_rmi4_data *rmi4_data = data;
+
+ do {
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ while (tpd_halt) {
+ tpd_flag = 0;
+ msleep(20);
+ }
+
+ wait_event_interruptible(waiter, tpd_flag != 0);
+
+ tpd_flag = 0;
+ set_current_state(TASK_RUNNING);
+
+ if (!rmi4_data->touch_stopped)
+ synaptics_rmi4_sensor_report(rmi4_data);
+#ifdef CONFIG_OF_TOUCH
+ enable_irq(touch_irq);
+#else
+ mt_eint_unmask(CUST_EINT_TOUCH_PANEL_NUM);
+#endif
+
+ } while (1);
+
+ return 0;
+}
+
+ /**
+ * synaptics_rmi4_irq_enable()
+ *
+ * Called by synaptics_rmi4_probe() and the power management functions
+ * in this driver and also exported to other expansion Function modules
+ * such as rmi_dev.
+ *
+ * This function handles the enabling and disabling of the attention
+ * irq including the setting up of the ISR thread.
+ */
+static int synaptics_rmi4_irq_enable(struct synaptics_rmi4_data *rmi4_data,
+ bool enable)
+{
+ int retval = 0;
+ unsigned char intr_status[MAX_INTR_REGISTERS];
+
+ if (enable) {
+
+ /* Clear interrupts first */
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_data_base_addr + 1,
+ intr_status,
+ rmi4_data->num_of_intr_regs);
+ if (retval < 0)
+ return retval;
+
+ /* set up irq */
+ if (!rmi4_data->irq_enabled) {
+#ifdef CONFIG_OF_TOUCH
+ enable_irq(touch_irq);
+#else
+ mt_eint_unmask(CUST_EINT_TOUCH_PANEL_NUM);
+#endif
+ rmi4_data->irq_enabled = true;
+
+ }
+
+ } else {
+ if (rmi4_data->irq_enabled) {
+#ifdef CONFIG_OF_TOUCH
+ disable_irq_nosync(touch_irq);
+#else
+ mt_eint_mask(CUST_EINT_TOUCH_PANEL_NUM);
+#endif
+ rmi4_data->irq_enabled = false;
+ }
+ }
+
+ return retval;
+}
+
+static void synaptics_rmi4_set_intr_mask(struct synaptics_rmi4_fn *fhandler,
+ struct synaptics_rmi4_fn_desc *fd,
+ unsigned int intr_count)
+{
+ unsigned char ii;
+ unsigned char intr_offset;
+
+ fhandler->intr_reg_num = (intr_count + 7) / 8;
+ if (fhandler->intr_reg_num != 0)
+ fhandler->intr_reg_num -= 1;
+
+ /* Set an enable bit for each data source */
+ intr_offset = intr_count % 8;
+ fhandler->intr_mask = 0;
+ for (ii = intr_offset;
+ ii < ((fd->intr_src_count & MASK_3BIT) +
+ intr_offset);
+ ii++)
+ fhandler->intr_mask |= 1 << ii;
+
+ return;
+}
+
+static int synaptics_rmi4_f01_init(struct synaptics_rmi4_data *rmi4_data,
+ struct synaptics_rmi4_fn *fhandler,
+ struct synaptics_rmi4_fn_desc *fd,
+ unsigned int intr_count)
+{
+ fhandler->fn_number = fd->fn_number;
+ fhandler->num_of_data_sources = fd->intr_src_count;
+ fhandler->data = NULL;
+ fhandler->extra = NULL;
+
+ synaptics_rmi4_set_intr_mask(fhandler, fd, intr_count);
+
+ rmi4_data->f01_query_base_addr = fd->query_base_addr;
+ rmi4_data->f01_ctrl_base_addr = fd->ctrl_base_addr;
+ rmi4_data->f01_data_base_addr = fd->data_base_addr;
+ rmi4_data->f01_cmd_base_addr = fd->cmd_base_addr;
+
+ return 0;
+}
+
+ /**
+ * synaptics_rmi4_f11_init()
+ *
+ * Called by synaptics_rmi4_query_device().
+ *
+ * This function parses information from the Function 11 registers
+ * and determines the number of fingers supported, x and y data ranges,
+ * offset to the associated interrupt status register, interrupt bit
+ * mask, and gathers finger data acquisition capabilities from the query
+ * registers.
+ */
+static int synaptics_rmi4_f11_init(struct synaptics_rmi4_data *rmi4_data,
+ struct synaptics_rmi4_fn *fhandler,
+ struct synaptics_rmi4_fn_desc *fd,
+ unsigned int intr_count)
+{
+ int retval;
+ unsigned char offset;
+ unsigned char fingers_supported;
+ struct synaptics_rmi4_f11_extra_data *extra_data;
+ struct synaptics_rmi4_f11_query_0_5 query_0_5;
+ struct synaptics_rmi4_f11_query_7_8 query_7_8;
+ struct synaptics_rmi4_f11_query_9 query_9;
+ struct synaptics_rmi4_f11_query_12 query_12;
+ struct synaptics_rmi4_f11_query_27 query_27;
+ struct synaptics_rmi4_f11_ctrl_6_9 control_6_9;
+
+ fhandler->fn_number = fd->fn_number;
+ fhandler->num_of_data_sources = fd->intr_src_count;
+ fhandler->extra = kmalloc(sizeof(*extra_data), GFP_KERNEL);
+ if (!fhandler->extra) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc mem for fhandle->extra\n",
+ __func__);
+ return -ENOMEM;
+ }
+ extra_data = (struct synaptics_rmi4_f11_extra_data *)fhandler->extra;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.query_base,
+ query_0_5.data,
+ sizeof(query_0_5.data));
+ if (retval < 0)
+ return retval;
+
+ /* Maximum number of fingers supported */
+ if (query_0_5.num_of_fingers <= 4)
+ fhandler->num_of_data_points = query_0_5.num_of_fingers + 1;
+ else if (query_0_5.num_of_fingers == 5)
+ fhandler->num_of_data_points = 10;
+
+ rmi4_data->num_of_fingers = fhandler->num_of_data_points;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.ctrl_base + 6,
+ control_6_9.data,
+ sizeof(control_6_9.data));
+ if (retval < 0)
+ return retval;
+
+ /* Maximum x and y */
+ rmi4_data->sensor_max_x = SENSOR_MAX_X;
+ rmi4_data->sensor_max_y = SENSOR_MAX_Y; //control_6_9.sensor_max_y_pos_7_0 |
+ //(control_6_9.sensor_max_y_pos_11_8 << 8);
+
+ /* It's recommended to parse max_x and max_y from contrel register, but this does not match MTK's mtk-tpd.c */
+
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Function %02x max x = %d max y = %d\n",
+ __func__, fhandler->fn_number,
+ rmi4_data->sensor_max_x,
+ rmi4_data->sensor_max_y);
+
+ rmi4_data->max_touch_width = MAX_F11_TOUCH_WIDTH;
+
+ synaptics_rmi4_set_intr_mask(fhandler, fd, intr_count);
+
+ fhandler->data = NULL;
+
+ offset = sizeof(query_0_5.data);
+
+ /* query 6 */
+ if (query_0_5.has_rel)
+ offset += 1;
+
+ /* queries 7 8 */
+ if (query_0_5.has_gestures) {
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.query_base + offset,
+ query_7_8.data,
+ sizeof(query_7_8.data));
+ if (retval < 0)
+ return retval;
+
+ offset += sizeof(query_7_8.data);
+ }
+
+ /* query 9 */
+ if (query_0_5.has_query_9) {
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.query_base + offset,
+ query_9.data,
+ sizeof(query_9.data));
+ if (retval < 0)
+ return retval;
+
+ offset += sizeof(query_9.data);
+ }
+
+ /* query 10 */
+ if (query_0_5.has_gestures && query_7_8.has_touch_shapes)
+ offset += 1;
+
+ /* query 11 */
+ if (query_0_5.has_query_11)
+ offset += 1;
+
+ /* query 12 */
+ if (query_0_5.has_query_12) {
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.query_base + offset,
+ query_12.data,
+ sizeof(query_12.data));
+ if (retval < 0)
+ return retval;
+
+ offset += sizeof(query_12.data);
+ }
+
+ /* query 13 */
+ if (query_0_5.has_jitter_filter)
+ offset += 1;
+
+ /* query 14 */
+ if (query_0_5.has_query_12 && query_12.has_general_information_2)
+ offset += 1;
+
+ /* queries 15 16 17 18 19 20 21 22 23 24 25 26*/
+ if (query_0_5.has_query_12 && query_12.has_physical_properties)
+ offset += 12;
+
+ /* query 27 */
+ if (query_0_5.has_query_27) {
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.query_base + offset,
+ query_27.data,
+ sizeof(query_27.data));
+ if (retval < 0)
+ return retval;
+
+ rmi4_data->f11_wakeup_gesture = query_27.has_wakeup_gesture;
+ }
+
+ if (!rmi4_data->f11_wakeup_gesture)
+ return retval;
+
+ /* data 0 */
+ fingers_supported = fhandler->num_of_data_points;
+ offset = (fingers_supported + 3) / 4;
+
+ /* data 1 2 3 4 5 */
+ offset += 5 * fingers_supported;
+
+ /* data 6 7 */
+ if (query_0_5.has_rel)
+ offset += 2 * fingers_supported;
+
+ /* data 8 */
+ if (query_0_5.has_gestures && query_7_8.data[0])
+ offset += 1;
+
+ /* data 9 */
+ if (query_0_5.has_gestures && (query_7_8.data[0] || query_7_8.data[1]))
+ offset += 1;
+
+ /* data 10 */
+ if (query_0_5.has_gestures &&
+ (query_7_8.has_pinch || query_7_8.has_flick))
+ offset += 1;
+
+ /* data 11 12 */
+ if (query_0_5.has_gestures &&
+ (query_7_8.has_flick || query_7_8.has_rotate))
+ offset += 2;
+
+ /* data 13 */
+ if (query_0_5.has_gestures && query_7_8.has_touch_shapes)
+ offset += (fingers_supported + 3) / 4;
+
+ /* data 14 15 */
+ if (query_0_5.has_gestures &&
+ (query_7_8.has_scroll_zones ||
+ query_7_8.has_multi_finger_scroll ||
+ query_7_8.has_chiral_scroll))
+ offset += 2;
+
+ /* data 16 17 */
+ if (query_0_5.has_gestures &&
+ (query_7_8.has_scroll_zones &&
+ query_7_8.individual_scroll_zones))
+ offset += 2;
+
+ /* data 18 19 20 21 22 23 24 25 26 27 */
+ if (query_0_5.has_query_9 && query_9.has_contact_geometry)
+ offset += 10 * fingers_supported;
+
+ /* data 28 */
+ if (query_0_5.has_bending_correction ||
+ query_0_5.has_large_object_suppression)
+ offset += 1;
+
+ /* data 29 30 31 */
+ if (query_0_5.has_query_9 && query_9.has_pen_hover_discrimination)
+ offset += 3;
+
+ /* data 32 */
+ if (query_0_5.has_query_12 &&
+ query_12.has_small_object_detection_tuning)
+ offset += 1;
+
+ /* data 33 34 */
+ if (query_0_5.has_query_27 && query_27.f11_query27_b0)
+ offset += 2;
+
+ /* data 35 */
+ if (query_0_5.has_query_12 && query_12.has_8bit_w)
+ offset += fingers_supported;
+
+ /* data 36 */
+ if (query_0_5.has_bending_correction)
+ offset += 1;
+
+ /* data 37 */
+ if (query_0_5.has_query_27 && query_27.has_data_37)
+ offset += 1;
+
+ /* data 38 */
+ if (query_0_5.has_query_27 && query_27.has_wakeup_gesture)
+ extra_data->data38_offset = offset;
+
+ return retval;
+}
+
+static int synaptics_rmi4_f12_set_enables(struct synaptics_rmi4_data *rmi4_data,
+ unsigned short ctrl28)
+{
+ int retval;
+ static unsigned short ctrl_28_address;
+
+ if (ctrl28)
+ ctrl_28_address = ctrl28;
+
+ retval = synaptics_rmi4_i2c_write(rmi4_data,
+ ctrl_28_address,
+ &rmi4_data->report_enable,
+ sizeof(rmi4_data->report_enable));
+ if (retval < 0)
+ return retval;
+
+ return retval;
+}
+
+ /**
+ * synaptics_rmi4_f12_init()
+ *
+ * Called by synaptics_rmi4_query_device().
+ *
+ * This function parses information from the Function 12 registers and
+ * determines the number of fingers supported, offset to the data1
+ * register, x and y data ranges, offset to the associated interrupt
+ * status register, interrupt bit mask, and allocates memory resources
+ * for finger data acquisition.
+ */
+static int synaptics_rmi4_f12_init(struct synaptics_rmi4_data *rmi4_data,
+ struct synaptics_rmi4_fn *fhandler,
+ struct synaptics_rmi4_fn_desc *fd,
+ unsigned int intr_count)
+{
+ int retval;
+ unsigned char size_of_2d_data;
+ unsigned char size_of_query8;
+ unsigned char ctrl_8_offset;
+ unsigned char ctrl_20_offset;
+ unsigned char ctrl_23_offset;
+ unsigned char ctrl_27_offset;
+ unsigned char ctrl_28_offset;
+ unsigned char num_of_fingers;
+ struct synaptics_rmi4_f12_extra_data *extra_data;
+ struct synaptics_rmi4_f12_query_5 query_5;
+ struct synaptics_rmi4_f12_query_8 query_8;
+ struct synaptics_rmi4_f12_ctrl_8 ctrl_8;
+ struct synaptics_rmi4_f12_ctrl_23 ctrl_23;
+
+ fhandler->fn_number = fd->fn_number;
+ fhandler->num_of_data_sources = fd->intr_src_count;
+ fhandler->extra = kmalloc(sizeof(*extra_data), GFP_KERNEL);
+ if (!fhandler->extra) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc mem for fhandler->extra\n",
+ __func__);
+ return -ENOMEM;
+ }
+ extra_data = (struct synaptics_rmi4_f12_extra_data *)fhandler->extra;
+ size_of_2d_data = sizeof(struct synaptics_rmi4_f12_finger_data);
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.query_base + 5,
+ query_5.data,
+ sizeof(query_5.data));
+ if (retval < 0)
+ return retval;
+
+ ctrl_8_offset = query_5.ctrl0_is_present +
+ query_5.ctrl1_is_present +
+ query_5.ctrl2_is_present +
+ query_5.ctrl3_is_present +
+ query_5.ctrl4_is_present +
+ query_5.ctrl5_is_present +
+ query_5.ctrl6_is_present +
+ query_5.ctrl7_is_present;
+
+ ctrl_20_offset = ctrl_8_offset +
+ query_5.ctrl8_is_present +
+ query_5.ctrl9_is_present +
+ query_5.ctrl10_is_present +
+ query_5.ctrl11_is_present +
+ query_5.ctrl12_is_present +
+ query_5.ctrl13_is_present +
+ query_5.ctrl14_is_present +
+ query_5.ctrl15_is_present +
+ query_5.ctrl16_is_present +
+ query_5.ctrl17_is_present +
+ query_5.ctrl18_is_present +
+ query_5.ctrl19_is_present;
+
+ ctrl_23_offset = ctrl_20_offset +
+ query_5.ctrl20_is_present +
+ query_5.ctrl21_is_present +
+ query_5.ctrl22_is_present;
+ ctrl_27_offset = ctrl_23_offset +
+ query_5.ctrl23_is_present +
+ query_5.ctrl24_is_present +
+ query_5.ctrl25_is_present +
+ query_5.ctrl26_is_present;
+ ctrl_28_offset = ctrl_27_offset +
+ query_5.ctrl27_is_present;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.ctrl_base + ctrl_23_offset,
+ ctrl_23.data,
+ sizeof(ctrl_23.data));
+ if (retval < 0)
+ return retval;
+
+ /* Maximum number of fingers supported */
+ fhandler->num_of_data_points = min(ctrl_23.max_reported_objects,
+ (unsigned char)F12_FINGERS_TO_SUPPORT);
+
+ num_of_fingers = fhandler->num_of_data_points;
+ rmi4_data->num_of_fingers = num_of_fingers;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.query_base + 7,
+ &size_of_query8,
+ sizeof(size_of_query8));
+ if (retval < 0)
+ return retval;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.query_base + 8,
+ query_8.data,
+ size_of_query8);
+ if (retval < 0)
+ return retval;
+
+ /* Determine the presence of the Data0 register */
+ extra_data->data1_offset = query_8.data0_is_present;
+
+ if ((size_of_query8 >= 3) && (query_8.data15_is_present)) {
+ extra_data->data15_offset = query_8.data0_is_present +
+ query_8.data1_is_present +
+ query_8.data2_is_present +
+ query_8.data3_is_present +
+ query_8.data4_is_present +
+ query_8.data5_is_present +
+ query_8.data6_is_present +
+ query_8.data7_is_present +
+ query_8.data8_is_present +
+ query_8.data9_is_present +
+ query_8.data10_is_present +
+ query_8.data11_is_present +
+ query_8.data12_is_present +
+ query_8.data13_is_present +
+ query_8.data14_is_present;
+ extra_data->data15_size = (num_of_fingers + 7) / 8;
+ } else {
+ extra_data->data15_size = 0;
+ }
+
+ rmi4_data->report_enable = RPT_DEFAULT;
+#ifdef REPORT_2D_Z
+ rmi4_data->report_enable |= RPT_Z;
+#endif
+#ifdef REPORT_2D_W
+ rmi4_data->report_enable |= (RPT_WX | RPT_WY);
+#endif
+
+ retval = synaptics_rmi4_f12_set_enables(rmi4_data,
+ fhandler->full_addr.ctrl_base + ctrl_28_offset);
+ if (retval < 0)
+ return retval;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.ctrl_base + ctrl_8_offset,
+ ctrl_8.data,
+ sizeof(ctrl_8.data));
+ if (retval < 0)
+ return retval;
+
+ /* Maximum x and y */
+ rmi4_data->sensor_max_x = SENSOR_MAX_X;
+ rmi4_data->sensor_max_y = SENSOR_MAX_Y;
+
+ /* It's recommended to parse max_x and max_y from contrel register, but this does not match MTK's mtk-tpd.c */
+
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Function %02x max x = %d max y = %d\n",
+ __func__, fhandler->fn_number,
+ rmi4_data->sensor_max_x,
+ rmi4_data->sensor_max_y);
+
+ rmi4_data->num_of_rx = ctrl_8.num_of_rx;
+ rmi4_data->num_of_tx = ctrl_8.num_of_tx;
+ rmi4_data->max_touch_width = max(rmi4_data->num_of_rx,
+ rmi4_data->num_of_tx);
+ rmi4_data->f12_wakeup_gesture = query_5.ctrl27_is_present;
+ if (rmi4_data->f12_wakeup_gesture) {
+ extra_data->ctrl20_offset = ctrl_20_offset;
+ extra_data->data4_offset = query_8.data0_is_present +
+ query_8.data1_is_present +
+ query_8.data2_is_present +
+ query_8.data3_is_present;
+ extra_data->ctrl27_offset = ctrl_27_offset;
+ }
+
+ synaptics_rmi4_set_intr_mask(fhandler, fd, intr_count);
+
+ /* Allocate memory for finger data storage space */
+ fhandler->data_size = num_of_fingers * size_of_2d_data;
+ fhandler->data = kmalloc(fhandler->data_size, GFP_KERNEL);
+ if (!fhandler->data) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc mem for fhandler->data\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ return retval;
+}
+
+static int synaptics_rmi4_f1a_alloc_mem(struct synaptics_rmi4_data *rmi4_data,
+ struct synaptics_rmi4_fn *fhandler)
+{
+ int retval;
+ struct synaptics_rmi4_f1a_handle *f1a;
+
+ f1a = kzalloc(sizeof(*f1a), GFP_KERNEL);
+ if (!f1a) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc mem for function handle\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ fhandler->data = (void *)f1a;
+ fhandler->extra = NULL;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.query_base,
+ f1a->button_query.data,
+ sizeof(f1a->button_query.data));
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to read query registers\n",
+ __func__);
+ return retval;
+ }
+
+ f1a->max_count = f1a->button_query.max_button_count + 1;
+
+ f1a->button_control.txrx_map = kzalloc(f1a->max_count * 2, GFP_KERNEL);
+ if (!f1a->button_control.txrx_map) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc mem for tx rx mapping\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ f1a->button_bitmask_size = (f1a->max_count + 7) / 8;
+
+ f1a->button_data_buffer = kcalloc(f1a->button_bitmask_size,
+ sizeof(*(f1a->button_data_buffer)), GFP_KERNEL);
+ if (!f1a->button_data_buffer) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc mem for data buffer\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ f1a->button_map = kcalloc(f1a->max_count,
+ sizeof(*(f1a->button_map)), GFP_KERNEL);
+ if (!f1a->button_map) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc mem for button map\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int synaptics_rmi4_f1a_button_map(struct synaptics_rmi4_data *rmi4_data,
+ struct synaptics_rmi4_fn *fhandler)
+{
+ int retval;
+ unsigned char ii;
+ unsigned char mapping_offset = 0;
+ struct synaptics_rmi4_f1a_handle *f1a = fhandler->data;
+
+ mapping_offset = f1a->button_query.has_general_control +
+ f1a->button_query.has_interrupt_enable +
+ f1a->button_query.has_multibutton_select;
+
+ if (f1a->button_query.has_tx_rx_map) {
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.ctrl_base + mapping_offset,
+ f1a->button_control.txrx_map,
+ sizeof(f1a->button_control.txrx_map));
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to read tx rx mapping\n",
+ __func__);
+ return retval;
+ }
+
+ rmi4_data->button_txrx_mapping = f1a->button_control.txrx_map;
+ }
+
+ if (cap_button_map.map) {
+ if (cap_button_map.nbuttons != f1a->max_count) {
+ f1a->valid_button_count = min(f1a->max_count,
+ cap_button_map.nbuttons);
+ } else {
+ f1a->valid_button_count = f1a->max_count;
+ }
+
+ for (ii = 0; ii < f1a->valid_button_count; ii++)
+ f1a->button_map[ii] = cap_button_map.map[ii];
+ }
+ return 0;
+}
+
+static void synaptics_rmi4_f1a_kfree(struct synaptics_rmi4_fn *fhandler)
+{
+ struct synaptics_rmi4_f1a_handle *f1a = fhandler->data;
+
+ if (f1a) {
+ kfree(f1a->button_control.txrx_map);
+ kfree(f1a->button_data_buffer);
+ kfree(f1a->button_map);
+ kfree(f1a);
+ fhandler->data = NULL;
+ }
+
+ return;
+}
+
+static int synaptics_rmi4_f1a_init(struct synaptics_rmi4_data *rmi4_data,
+ struct synaptics_rmi4_fn *fhandler,
+ struct synaptics_rmi4_fn_desc *fd,
+ unsigned int intr_count)
+{
+ int retval;
+
+ fhandler->fn_number = fd->fn_number;
+ fhandler->num_of_data_sources = fd->intr_src_count;
+
+ synaptics_rmi4_set_intr_mask(fhandler, fd, intr_count);
+
+ retval = synaptics_rmi4_f1a_alloc_mem(rmi4_data, fhandler);
+ if (retval < 0)
+ goto error_exit;
+
+ retval = synaptics_rmi4_f1a_button_map(rmi4_data, fhandler);
+ if (retval < 0)
+ goto error_exit;
+
+ rmi4_data->button_0d_enabled = 1;
+
+ return 0;
+
+error_exit:
+ synaptics_rmi4_f1a_kfree(fhandler);
+
+ return retval;
+}
+
+static void synaptics_rmi4_empty_fn_list(struct synaptics_rmi4_data *rmi4_data)
+{
+ struct synaptics_rmi4_fn *fhandler;
+ struct synaptics_rmi4_fn *fhandler_temp;
+ struct synaptics_rmi4_device_info *rmi;
+
+ rmi = &(rmi4_data->rmi4_mod_info);
+
+ if (!list_empty(&rmi->support_fn_list)) {
+ list_for_each_entry_safe(fhandler,
+ fhandler_temp,
+ &rmi->support_fn_list,
+ link) {
+ if (fhandler->fn_number == SYNAPTICS_RMI4_F1A) {
+ synaptics_rmi4_f1a_kfree(fhandler);
+ } else {
+ kfree(fhandler->extra);
+ kfree(fhandler->data);
+ }
+ list_del(&fhandler->link);
+ kfree(fhandler);
+ }
+ }
+ INIT_LIST_HEAD(&rmi->support_fn_list);
+
+ return;
+}
+
+static int synaptics_rmi4_check_status(struct synaptics_rmi4_data *rmi4_data,
+ bool *was_in_bl_mode)
+{
+ int retval;
+ int timeout = CHECK_STATUS_TIMEOUT_MS;
+ unsigned char command = 0x01;
+ unsigned char intr_status;
+ struct synaptics_rmi4_f01_device_status status;
+
+ /* Do a device reset first */
+ retval = synaptics_rmi4_i2c_write(rmi4_data,
+ rmi4_data->f01_cmd_base_addr,
+ &command,
+ sizeof(command));
+ if (retval < 0)
+ return retval;
+
+ msleep(DELAY_UI_READY);
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_data_base_addr,
+ status.data,
+ sizeof(status.data));
+ if (retval < 0)
+ return retval;
+
+ while (status.status_code == STATUS_CRC_IN_PROGRESS) {
+ if (timeout > 0)
+ msleep(20);
+ else
+ return -1;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_data_base_addr,
+ status.data,
+ sizeof(status.data));
+ if (retval < 0)
+ return retval;
+
+ timeout -= 20;
+ }
+
+ if (timeout != CHECK_STATUS_TIMEOUT_MS)
+ *was_in_bl_mode = true;
+
+ if (status.flash_prog == 1) {
+ rmi4_data->flash_prog_mode = true;
+ pr_notice("%s: In flash prog mode, status = 0x%02x\n",
+ __func__,
+ status.status_code);
+ } else {
+ rmi4_data->flash_prog_mode = false;
+ }
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_data_base_addr + 1,
+ &intr_status,
+ sizeof(intr_status));
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to read interrupt status\n",
+ __func__);
+ return retval;
+ }
+
+ return 0;
+}
+
+static void synaptics_rmi4_set_configured(struct synaptics_rmi4_data *rmi4_data)
+{
+ int retval;
+ unsigned char device_ctrl;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_ctrl_base_addr,
+ &device_ctrl,
+ sizeof(device_ctrl));
+ if (retval < 0) {
+ dev_err(&(rmi4_data->input_dev->dev),
+ "%s: Failed to set configured\n",
+ __func__);
+ return;
+ }
+
+ rmi4_data->no_sleep_setting = device_ctrl & NO_SLEEP_ON;
+ device_ctrl |= CONFIGURED;
+
+ retval = synaptics_rmi4_i2c_write(rmi4_data,
+ rmi4_data->f01_ctrl_base_addr,
+ &device_ctrl,
+ sizeof(device_ctrl));
+ if (retval < 0) {
+ dev_err(&(rmi4_data->input_dev->dev),
+ "%s: Failed to set configured\n",
+ __func__);
+ }
+
+ return;
+}
+
+static int synaptics_rmi4_alloc_fh(struct synaptics_rmi4_fn **fhandler,
+ struct synaptics_rmi4_fn_desc *rmi_fd, int page_number)
+{
+ *fhandler = kmalloc(sizeof(**fhandler), GFP_KERNEL);
+ if (!(*fhandler))
+ return -ENOMEM;
+
+ (*fhandler)->full_addr.data_base =
+ (rmi_fd->data_base_addr |
+ (page_number << 8));
+ (*fhandler)->full_addr.ctrl_base =
+ (rmi_fd->ctrl_base_addr |
+ (page_number << 8));
+ (*fhandler)->full_addr.cmd_base =
+ (rmi_fd->cmd_base_addr |
+ (page_number << 8));
+ (*fhandler)->full_addr.query_base =
+ (rmi_fd->query_base_addr |
+ (page_number << 8));
+
+ return 0;
+}
+
+ /**
+ * synaptics_rmi4_query_device()
+ *
+ * Called by synaptics_rmi4_probe().
+ *
+ * This function scans the page description table, records the offsets
+ * to the register types of Function $01, sets up the function handlers
+ * for Function $11 and Function $12, determines the number of interrupt
+ * sources from the sensor, adds valid Functions with data inputs to the
+ * Function linked list, parses information from the query registers of
+ * Function $01, and enables the interrupt sources from the valid Functions
+ * with data inputs.
+ */
+static int synaptics_rmi4_query_device(struct synaptics_rmi4_data *rmi4_data)
+{
+ int retval;
+ unsigned char ii;
+ unsigned char page_number;
+ unsigned char intr_count;
+ unsigned char f01_query[F01_STD_QUERY_LEN];
+ unsigned short pdt_entry_addr;
+ unsigned short intr_addr;
+ bool was_in_bl_mode;
+ struct synaptics_rmi4_fn_desc rmi_fd;
+ struct synaptics_rmi4_fn *fhandler;
+ struct synaptics_rmi4_device_info *rmi;
+
+ rmi = &(rmi4_data->rmi4_mod_info);
+
+rescan_pdt:
+ was_in_bl_mode = false;
+ intr_count = 0;
+ INIT_LIST_HEAD(&rmi->support_fn_list);
+
+ /* Scan the page description tables of the pages to service */
+ for (page_number = 0; page_number < PAGES_TO_SERVICE; page_number++) {
+ for (pdt_entry_addr = PDT_START; pdt_entry_addr > PDT_END;
+ pdt_entry_addr -= PDT_ENTRY_SIZE) {
+ pdt_entry_addr |= (page_number << 8);
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ pdt_entry_addr,
+ (unsigned char *)&rmi_fd,
+ sizeof(rmi_fd));
+ if (retval < 0)
+ return retval;
+
+ fhandler = NULL;
+
+ if (rmi_fd.fn_number == 0) {
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Reached end of PDT\n",
+ __func__);
+ break;
+ }
+
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: F%02x found (page %d)\n",
+ __func__, rmi_fd.fn_number,
+ page_number);
+
+ switch (rmi_fd.fn_number) {
+ case SYNAPTICS_RMI4_F01:
+ if (rmi_fd.intr_src_count == 0)
+ break;
+
+ retval = synaptics_rmi4_alloc_fh(&fhandler,
+ &rmi_fd, page_number);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc for F%d\n",
+ __func__,
+ rmi_fd.fn_number);
+ return retval;
+ }
+
+ retval = synaptics_rmi4_f01_init(rmi4_data,
+ fhandler, &rmi_fd, intr_count);
+ if (retval < 0)
+ return retval;
+
+ retval = synaptics_rmi4_check_status(rmi4_data,
+ &was_in_bl_mode);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to check status\n",
+ __func__);
+ return retval;
+ }
+
+ if (was_in_bl_mode) {
+ kfree(fhandler);
+ fhandler = NULL;
+ goto rescan_pdt;
+ }
+
+ if (rmi4_data->flash_prog_mode)
+ goto flash_prog_mode;
+
+ break;
+ case SYNAPTICS_RMI4_F11:
+ if (rmi_fd.intr_src_count == 0)
+ break;
+
+ retval = synaptics_rmi4_alloc_fh(&fhandler,
+ &rmi_fd, page_number);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc for F%d\n",
+ __func__,
+ rmi_fd.fn_number);
+ return retval;
+ }
+
+ retval = synaptics_rmi4_f11_init(rmi4_data,
+ fhandler, &rmi_fd, intr_count);
+ if (retval < 0)
+ return retval;
+ break;
+ case SYNAPTICS_RMI4_F12:
+ if (rmi_fd.intr_src_count == 0)
+ break;
+
+ retval = synaptics_rmi4_alloc_fh(&fhandler,
+ &rmi_fd, page_number);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc for F%d\n",
+ __func__,
+ rmi_fd.fn_number);
+ return retval;
+ }
+
+ retval = synaptics_rmi4_f12_init(rmi4_data,
+ fhandler, &rmi_fd, intr_count);
+ if (retval < 0)
+ return retval;
+ break;
+ case SYNAPTICS_RMI4_F1A:
+ if (rmi_fd.intr_src_count == 0)
+ break;
+
+ retval = synaptics_rmi4_alloc_fh(&fhandler,
+ &rmi_fd, page_number);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to alloc for F%d\n",
+ __func__,
+ rmi_fd.fn_number);
+ return retval;
+ }
+
+ retval = synaptics_rmi4_f1a_init(rmi4_data,
+ fhandler, &rmi_fd, intr_count);
+ if (retval < 0) {
+#ifdef IGNORE_FN_INIT_FAILURE
+ kfree(fhandler);
+ fhandler = NULL;
+#else
+ return retval;
+#endif
+ }
+ break;
+ }
+
+ /* Accumulate the interrupt count */
+ intr_count += (rmi_fd.intr_src_count & MASK_3BIT);
+
+ if (fhandler && rmi_fd.intr_src_count) {
+ list_add_tail(&fhandler->link,
+ &rmi->support_fn_list);
+ }
+ }
+ }
+
+flash_prog_mode:
+ rmi4_data->num_of_intr_regs = (intr_count + 7) / 8;
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Number of interrupt registers = %d\n",
+ __func__, rmi4_data->num_of_intr_regs);
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_query_base_addr,
+ f01_query,
+ sizeof(f01_query));
+ if (retval < 0)
+ return retval;
+
+ /* RMI Version 4.0 currently supported */
+ rmi->version_major = 4;
+ rmi->version_minor = 0;
+
+ rmi->manufacturer_id = f01_query[0];
+ rmi->product_props = f01_query[1];
+ rmi->product_info[0] = f01_query[2] & MASK_7BIT;
+ rmi->product_info[1] = f01_query[3] & MASK_7BIT;
+ rmi->date_code[0] = f01_query[4] & MASK_5BIT;
+ rmi->date_code[1] = f01_query[5] & MASK_4BIT;
+ rmi->date_code[2] = f01_query[6] & MASK_5BIT;
+ rmi->tester_id = ((f01_query[7] & MASK_7BIT) << 8) |
+ (f01_query[8] & MASK_7BIT);
+ rmi->serial_number = ((f01_query[9] & MASK_7BIT) << 8) |
+ (f01_query[10] & MASK_7BIT);
+ memcpy(rmi->product_id_string, &f01_query[11], 10);
+
+ if (rmi->manufacturer_id != 1) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Non-Synaptics device found, manufacturer ID = %d\n",
+ __func__, rmi->manufacturer_id);
+ }
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_query_base_addr + F01_BUID_ID_OFFSET,
+ rmi->build_id,
+ sizeof(rmi->build_id));
+ if (retval < 0)
+ return retval;
+
+ rmi4_data->firmware_id = (unsigned int)rmi->build_id[0] +
+ (unsigned int)rmi->build_id[1] * 0x100 +
+ (unsigned int)rmi->build_id[2] * 0x10000;
+
+ memset(rmi4_data->intr_mask, 0x00, sizeof(rmi4_data->intr_mask));
+
+ /*
+ * Map out the interrupt bit masks for the interrupt sources
+ * from the registered function handlers.
+ */
+ if (!list_empty(&rmi->support_fn_list)) {
+ list_for_each_entry(fhandler, &rmi->support_fn_list, link) {
+ if (fhandler->num_of_data_sources) {
+ rmi4_data->intr_mask[fhandler->intr_reg_num] |=
+ fhandler->intr_mask;
+ }
+ }
+ }
+
+ if (rmi4_data->f11_wakeup_gesture || rmi4_data->f12_wakeup_gesture)
+ rmi4_data->enable_wakeup_gesture = WAKEUP_GESTURE;
+ else
+ rmi4_data->enable_wakeup_gesture = false;
+
+ /* Enable the interrupt sources */
+ for (ii = 0; ii < rmi4_data->num_of_intr_regs; ii++) {
+ if (rmi4_data->intr_mask[ii] != 0x00) {
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Interrupt enable mask %d = 0x%02x\n",
+ __func__, ii, rmi4_data->intr_mask[ii]);
+ intr_addr = rmi4_data->f01_ctrl_base_addr + 1 + ii;
+ retval = synaptics_rmi4_i2c_write(rmi4_data,
+ intr_addr,
+ &(rmi4_data->intr_mask[ii]),
+ sizeof(rmi4_data->intr_mask[ii]));
+ if (retval < 0)
+ return retval;
+ }
+ }
+
+ synaptics_rmi4_set_configured(rmi4_data);
+
+ return 0;
+}
+
+static void synaptics_rmi4_set_params(struct synaptics_rmi4_data *rmi4_data)
+{
+ unsigned char ii;
+ struct synaptics_rmi4_f1a_handle *f1a;
+ struct synaptics_rmi4_fn *fhandler;
+ struct synaptics_rmi4_device_info *rmi;
+
+ rmi = &(rmi4_data->rmi4_mod_info);
+
+ input_set_abs_params(rmi4_data->input_dev,
+ ABS_MT_POSITION_X, 0,
+ rmi4_data->sensor_max_x, 0, 0);
+ input_set_abs_params(rmi4_data->input_dev,
+ ABS_MT_POSITION_Y, 0,
+ rmi4_data->sensor_max_y, 0, 0);
+#ifdef REPORT_2D_W
+ input_set_abs_params(rmi4_data->input_dev,
+ ABS_MT_TOUCH_MAJOR, 0,
+ rmi4_data->max_touch_width, 0, 0);
+ input_set_abs_params(rmi4_data->input_dev,
+ ABS_MT_TOUCH_MINOR, 0,
+ rmi4_data->max_touch_width, 0, 0);
+#endif
+
+#ifdef TYPE_B_PROTOCOL
+ input_mt_init_slots(rmi4_data->input_dev,
+ rmi4_data->num_of_fingers, 0);
+#endif
+
+ f1a = NULL;
+ if (!list_empty(&rmi->support_fn_list)) {
+ list_for_each_entry(fhandler, &rmi->support_fn_list, link) {
+ if (fhandler->fn_number == SYNAPTICS_RMI4_F1A)
+ f1a = fhandler->data;
+ }
+ }
+
+ if (f1a) {
+ for (ii = 0; ii < f1a->valid_button_count; ii++) {
+ set_bit(f1a->button_map[ii],
+ rmi4_data->input_dev->keybit);
+ input_set_capability(rmi4_data->input_dev,
+ EV_KEY, f1a->button_map[ii]);
+ }
+ }
+
+ if (rmi4_data->f11_wakeup_gesture || rmi4_data->f12_wakeup_gesture) {
+ set_bit(KEY_POWER, rmi4_data->input_dev->keybit);
+ input_set_capability(rmi4_data->input_dev, EV_KEY, KEY_POWER);
+ }
+ return;
+}
+
+static int synaptics_rmi4_set_input_dev(struct synaptics_rmi4_data *rmi4_data)
+{
+ int retval;
+
+ rmi4_data->input_dev = input_allocate_device();
+ if (rmi4_data->input_dev == NULL) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to allocate input device\n",
+ __func__);
+ retval = -ENOMEM;
+ goto err_input_device;
+ }
+
+ retval = synaptics_rmi4_query_device(rmi4_data);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to query device\n",
+ __func__);
+ goto err_query_device;
+ }
+
+ rmi4_data->input_dev->name = DRIVER_NAME;
+ rmi4_data->input_dev->phys = INPUT_PHYS_NAME;
+ rmi4_data->input_dev->id.product = SYNAPTICS_DSX_DRIVER_PRODUCT;
+ rmi4_data->input_dev->id.version = SYNAPTICS_DSX_DRIVER_VERSION;
+ rmi4_data->input_dev->id.bustype = BUS_I2C;
+ rmi4_data->input_dev->dev.parent = &rmi4_data->i2c_client->dev;
+ input_set_drvdata(rmi4_data->input_dev, rmi4_data);
+
+ set_bit(EV_SYN, rmi4_data->input_dev->evbit);
+ set_bit(EV_KEY, rmi4_data->input_dev->evbit);
+ set_bit(EV_ABS, rmi4_data->input_dev->evbit);
+ set_bit(BTN_TOUCH, rmi4_data->input_dev->keybit);
+ set_bit(BTN_TOOL_FINGER, rmi4_data->input_dev->keybit);
+#ifdef INPUT_PROP_DIRECT
+ set_bit(INPUT_PROP_DIRECT, rmi4_data->input_dev->propbit);
+#endif
+
+ synaptics_rmi4_set_params(rmi4_data);
+
+ retval = input_register_device(rmi4_data->input_dev);
+ if (retval) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to register input device\n",
+ __func__);
+ goto err_register_input;
+ }
+
+ return 0;
+
+err_register_input:
+err_query_device:
+ synaptics_rmi4_empty_fn_list(rmi4_data);
+ input_free_device(rmi4_data->input_dev);
+
+err_input_device:
+ return retval;
+}
+
+static int synaptics_rmi4_free_fingers(struct synaptics_rmi4_data *rmi4_data)
+{
+ unsigned char ii;
+ mutex_lock(&rmi4_report_mutex);
+
+#ifdef TYPE_B_PROTOCOL
+ for (ii = 0; ii < rmi4_data->num_of_fingers; ii++) {
+ input_mt_slot(rmi4_data->input_dev, ii);
+ input_mt_report_slot_state(rmi4_data->input_dev,
+ MT_TOOL_FINGER, 0);
+ }
+#endif
+ input_report_key(rmi4_data->input_dev,
+ BTN_TOUCH, 0);
+ input_report_key(rmi4_data->input_dev,
+ BTN_TOOL_FINGER, 0);
+#ifndef TYPE_B_PROTOCOL
+ input_mt_sync(rmi4_data->input_dev);
+#endif
+ input_sync(rmi4_data->input_dev);
+ mutex_unlock(&rmi4_report_mutex);
+ rmi4_data->fingers_on_2d = false;
+
+ return 0;
+}
+
+static int synaptics_rmi4_reinit_device(struct synaptics_rmi4_data *rmi4_data)
+{
+ int retval;
+ unsigned char ii;
+ unsigned short intr_addr;
+ struct synaptics_rmi4_fn *fhandler;
+ struct synaptics_rmi4_exp_fhandler *exp_fhandler;
+ struct synaptics_rmi4_device_info *rmi;
+
+ rmi = &(rmi4_data->rmi4_mod_info);
+
+ mutex_lock(&(rmi4_data->rmi4_reset_mutex));
+
+ synaptics_rmi4_free_fingers(rmi4_data);
+
+ if (!list_empty(&rmi->support_fn_list)) {
+ list_for_each_entry(fhandler, &rmi->support_fn_list, link) {
+ if (fhandler->fn_number == SYNAPTICS_RMI4_F12) {
+ synaptics_rmi4_f12_set_enables(rmi4_data, 0);
+ break;
+ }
+ }
+ }
+
+ for (ii = 0; ii < rmi4_data->num_of_intr_regs; ii++) {
+ if (rmi4_data->intr_mask[ii] != 0x00) {
+ dev_dbg(&rmi4_data->i2c_client->dev,
+ "%s: Interrupt enable mask %d = 0x%02x\n",
+ __func__, ii, rmi4_data->intr_mask[ii]);
+ intr_addr = rmi4_data->f01_ctrl_base_addr + 1 + ii;
+ retval = synaptics_rmi4_i2c_write(rmi4_data,
+ intr_addr,
+ &(rmi4_data->intr_mask[ii]),
+ sizeof(rmi4_data->intr_mask[ii]));
+ if (retval < 0)
+ goto exit;
+ }
+ }
+
+ mutex_lock(&exp_data.mutex);
+ if (!list_empty(&exp_data.list)) {
+ list_for_each_entry(exp_fhandler, &exp_data.list, link)
+ if (exp_fhandler->exp_fn->reinit != NULL)
+ exp_fhandler->exp_fn->reinit(rmi4_data);
+ }
+ mutex_unlock(&exp_data.mutex);
+
+ synaptics_rmi4_set_configured(rmi4_data);
+
+ retval = 0;
+
+exit:
+ mutex_unlock(&(rmi4_data->rmi4_reset_mutex));
+ return retval;
+}
+
+static int synaptics_rmi4_reset_device(struct synaptics_rmi4_data *rmi4_data)
+{
+ int retval;
+ unsigned char command = 0x01;
+ struct synaptics_rmi4_exp_fhandler *exp_fhandler;
+
+ mutex_lock(&(rmi4_data->rmi4_reset_mutex));
+
+ rmi4_data->touch_stopped = true;
+
+ synaptics_rmi4_irq_enable(rmi4_data, false);
+
+ retval = synaptics_rmi4_i2c_write(rmi4_data,
+ rmi4_data->f01_cmd_base_addr,
+ &command,
+ sizeof(command));
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to issue reset command, error = %d\n",
+ __func__, retval);
+ mutex_unlock(&(rmi4_data->rmi4_reset_mutex));
+ return retval;
+ }
+
+ msleep(DELAY_UI_READY);
+
+ synaptics_rmi4_free_fingers(rmi4_data);
+
+ synaptics_rmi4_empty_fn_list(rmi4_data);
+
+ retval = synaptics_rmi4_query_device(rmi4_data);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to query device\n",
+ __func__);
+ mutex_unlock(&(rmi4_data->rmi4_reset_mutex));
+ return retval;
+ }
+
+ synaptics_rmi4_set_params(rmi4_data);
+
+ mutex_lock(&exp_data.mutex);
+ if (!list_empty(&exp_data.list)) {
+ list_for_each_entry(exp_fhandler, &exp_data.list, link)
+ if (exp_fhandler->exp_fn->reset != NULL)
+ exp_fhandler->exp_fn->reset(rmi4_data);
+ }
+ mutex_unlock(&exp_data.mutex);
+
+ rmi4_data->touch_stopped = false;
+
+ synaptics_rmi4_irq_enable(rmi4_data, true);
+
+ mutex_unlock(&(rmi4_data->rmi4_reset_mutex));
+
+ return 0;
+}
+
+
+static void synaptics_rmi4_sleep_enable(struct synaptics_rmi4_data *rmi4_data,
+ bool enable)
+{
+ int retval;
+ unsigned char device_ctrl;
+ unsigned char no_sleep_setting = rmi4_data->no_sleep_setting;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ rmi4_data->f01_ctrl_base_addr,
+ &device_ctrl,
+ sizeof(device_ctrl));
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to read device control\n",
+ __func__);
+ return;
+ }
+
+ device_ctrl = device_ctrl & ~MASK_3BIT;
+ if (enable)
+ device_ctrl = device_ctrl | NO_SLEEP_OFF | SENSOR_SLEEP;
+ else
+ device_ctrl = device_ctrl | no_sleep_setting | NORMAL_OPERATION;
+
+ retval = synaptics_rmi4_i2c_write(rmi4_data,
+ rmi4_data->f01_ctrl_base_addr,
+ &device_ctrl,
+ sizeof(device_ctrl));
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to write device control\n",
+ __func__);
+ return;
+ }
+
+ rmi4_data->sensor_sleep = enable;
+
+ return;
+}
+
+
+
+
+/**
+ * synaptics_rmi4_exp_fn_work()
+ *
+ * Called by the kernel at the scheduled time.
+ *
+ * This function is a work thread that checks for the insertion and
+ * removal of other expansion Function modules such as rmi_dev and calls
+ * their initialization and removal callback functions accordingly.
+ */
+static void synaptics_rmi4_exp_fn_work(struct work_struct *work)
+{
+ int retval;
+ struct synaptics_rmi4_exp_fhandler *exp_fhandler;
+ struct synaptics_rmi4_exp_fhandler *exp_fhandler_temp;
+ struct synaptics_rmi4_data *rmi4_data = exp_data.rmi4_data;
+
+ mutex_lock(&exp_data.mutex);
+ if (!list_empty(&exp_data.list)) {
+ list_for_each_entry_safe(exp_fhandler,
+ exp_fhandler_temp,
+ &exp_data.list,
+ link) {
+ if ((exp_fhandler->exp_fn->init != NULL) &&
+ exp_fhandler->insert) {
+ retval = exp_fhandler->exp_fn->init(rmi4_data);
+ if (retval < 0) {
+ list_del(&exp_fhandler->link);
+ kfree(exp_fhandler);
+ } else {
+ exp_fhandler->insert = false;
+ }
+ } else if ((exp_fhandler->exp_fn->remove != NULL) &&
+ exp_fhandler->remove) {
+ exp_fhandler->exp_fn->remove(rmi4_data);
+ list_del(&exp_fhandler->link);
+ kfree(exp_fhandler);
+ }
+ }
+ }
+ mutex_unlock(&exp_data.mutex);
+
+ return;
+}
+
+/**
+ * synaptics_rmi4_new_function()
+ *
+ * Called by other expansion Function modules in their module init and
+ * module exit functions.
+ *
+ * This function is used by other expansion Function modules such as
+ * rmi_dev to register themselves with the driver by providing their
+ * initialization and removal callback function pointers so that they
+ * can be inserted or removed dynamically at module init and exit times,
+ * respectively.
+ */
+void synaptics_rmi4_new_function(struct synaptics_rmi4_exp_fn *exp_fn,
+ bool insert)
+{
+ struct synaptics_rmi4_exp_fhandler *exp_fhandler;
+
+ if (!exp_data.initialized) {
+ mutex_init(&exp_data.mutex);
+ INIT_LIST_HEAD(&exp_data.list);
+ exp_data.initialized = true;
+ }
+
+ mutex_lock(&exp_data.mutex);
+ if (insert) {
+ exp_fhandler = kzalloc(sizeof(*exp_fhandler), GFP_KERNEL);
+ if (!exp_fhandler) {
+ pr_err("%s: Failed to alloc mem for expansion function\n",
+ __func__);
+ goto exit;
+ }
+ exp_fhandler->exp_fn = exp_fn;
+ exp_fhandler->insert = true;
+ exp_fhandler->remove = false;
+ list_add_tail(&exp_fhandler->link, &exp_data.list);
+ } else if (!list_empty(&exp_data.list)) {
+ list_for_each_entry(exp_fhandler, &exp_data.list, link) {
+ if (exp_fhandler->exp_fn->fn_type == exp_fn->fn_type) {
+ exp_fhandler->insert = false;
+ exp_fhandler->remove = true;
+ goto exit;
+ }
+ }
+ }
+
+exit:
+ mutex_unlock(&exp_data.mutex);
+
+ if (exp_data.queue_work) {
+ queue_delayed_work(exp_data.workqueue,
+ &exp_data.work,
+ msecs_to_jiffies(EXP_FN_WORK_DELAY_MS));
+ }
+
+ return;
+}
+EXPORT_SYMBOL(synaptics_rmi4_new_function);
+
+
+static ssize_t synaptics_rmi4_f34_configid_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
+
+ return snprintf(buf, PAGE_SIZE, "0x%x\n", rmi4_data->config_id);
+}
+
+
+
+static ssize_t synaptics_rmi4_f01_product_id_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%s\n",
+ (rmi4_data->rmi4_mod_info.product_id_string));
+}
+
+
+static DEVICE_ATTR(tp_firmware_version, 0664, synaptics_rmi4_f34_configid_show, synaptics_rmi4_store_error);
+static DEVICE_ATTR(product_id, 0664, synaptics_rmi4_f01_product_id_show, synaptics_rmi4_store_error);
+
+static struct attribute *synaptics_rmi4_attrs[] = {
+ attrify(tp_firmware_version),
+ attrify(product_id),
+ NULL,
+};
+
+static struct attribute_group attr_group = {
+ .attrs = synaptics_rmi4_attrs,
+};
+ /**
+ * synaptics_rmi4_probe()
+ *
+ * Called by the kernel when an association with an I2C device of the
+ * same name is made (after doing i2c_add_driver).
+ *
+ * This function allocates and initializes the resources for the driver
+ * as an input driver, turns on the power to the sensor, queries the
+ * sensor for its supported Functions and characteristics, registers
+ * the driver to the input subsystem, sets up the interrupt, handles
+ * the registration of the early_suspend and late_resume functions,
+ * and creates a work queue for detection of other expansion Function
+ * modules.
+ */
+static int synaptics_rmi4_probe(struct i2c_client *client,
+ const struct i2c_device_id *dev_id)
+{
+ int retval, ret;
+ unsigned char attr_count;
+ struct synaptics_rmi4_data *rmi4_data;
+ struct device_node *np = client->dev.of_node;
+#if 0
+ int rst_gpio;
+#endif
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA)) {
+ dev_err(&client->dev,
+ "%s: SMBus byte data not supported\n",
+ __func__);
+ return -EIO;
+ }
+
+#ifdef USE_I2C_DMA
+ wDMABuf_va = (unsigned char *)dma_zalloc_coherent(&client->dev, WRITE_SIZE_LIMIT,
+ &wDMABuf_pa, GFP_KERNEL);
+ if (!wDMABuf_va) {
+ dev_err(&client->dev, "Allocate DMA I2C Buffer failed, exit\n");
+ return -ENOMEM;
+ }
+#endif
+
+ if (!np)
+ return -ENODEV;
+#if 0
+ rst_gpio = of_get_named_gpio(np, "rest-gpios", 0);
+ if (!gpio_is_valid(rst_gpio))
+ return -ENODEV;
+
+ ret = gpio_request(rst_gpio, "synaptics_rmi4_rest");
+ if (ret < 0) {
+ dev_err(&client->dev,
+ "request rest gpio failed, cannot wake up controller: %d\n",
+ ret);
+ return ret;
+ }
+
+ gpio_direction_output(rst_gpio, 0);
+ gpio_set_value(rst_gpio, 1);
+ msleep(DELAY_BOOT_READY);
+ gpio_set_value(rst_gpio, 0);
+ msleep(DELAY_RESET_LOW);
+ gpio_set_value(rst_gpio, 1);
+ msleep(DELAY_UI_READY);
+#endif
+
+ rmi4_data = kzalloc(sizeof(*rmi4_data), GFP_KERNEL);
+ if (!rmi4_data) {
+ dev_err(&client->dev,
+ "%s: Failed to alloc mem for rmi4_data\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ rmi4_data->i2c_client = client;
+ rmi4_data->current_page = MASK_8BIT;
+ rmi4_data->touch_stopped = false;
+ rmi4_data->sensor_sleep = false;
+ rmi4_data->irq_enabled = false;
+ rmi4_data->fingers_on_2d = false;
+
+ rmi4_data->i2c_read = synaptics_rmi4_i2c_read;
+ rmi4_data->i2c_write = synaptics_rmi4_i2c_write;
+ rmi4_data->irq_enable = synaptics_rmi4_irq_enable;
+ rmi4_data->reset_device = synaptics_rmi4_reset_device;
+ rmi4_data->sleep_enable = synaptics_rmi4_sleep_enable;
+
+ rmi4_data->i2c_addr = client->addr;
+
+ mutex_init(&(rmi4_data->rmi4_io_ctrl_mutex));
+ mutex_init(&(rmi4_data->rmi4_reset_mutex));
+ mutex_init(&(rmi4_data->rmi4_exp_init_mutex));
+
+ i2c_set_clientdata(client, rmi4_data);
+ retval = synaptics_rmi4_set_input_dev(rmi4_data);
+ if (retval < 0) {
+ dev_err(&client->dev,
+ "%s: Failed to set up input device\n",
+ __func__);
+ goto err_set_input_dev;
+ }
+
+ thread = kthread_run(touch_event_handler, rmi4_data, "synaptics_dsx");
+ if (IS_ERR(thread)) {
+ retval = PTR_ERR(thread);
+ pr_err(" %s: failed to create kernel thread: %d\n", __func__, retval);
+ }
+
+ touch_irq = client->irq;
+ ret = devm_request_irq(&client->dev, touch_irq, (irq_handler_t) tpd_eint_handler,
+ IRQF_TRIGGER_LOW, "synaptics_rmi4_touch", NULL);
+
+ disable_irq_nosync(touch_irq);
+ retval = synaptics_rmi4_irq_enable(rmi4_data, true);
+ if (retval < 0) {
+ dev_err(&client->dev,
+ "%s: Failed to register attention interrupt\n",
+ __func__);
+ goto err_enable_irq;
+ }
+
+ if (!exp_data.initialized) {
+ mutex_init(&exp_data.mutex);
+ INIT_LIST_HEAD(&exp_data.list);
+ exp_data.initialized = true;
+ }
+
+
+ exp_data.workqueue = create_singlethread_workqueue("dsx_exp_workqueue");
+ INIT_DELAYED_WORK(&exp_data.work, synaptics_rmi4_exp_fn_work);
+ exp_data.rmi4_data = rmi4_data;
+ exp_data.queue_work = true;
+ queue_delayed_work(exp_data.workqueue,
+ &exp_data.work,
+ msecs_to_jiffies(EXP_FN_WORK_DELAY_MS));
+
+ for (attr_count = 0; attr_count < ARRAY_SIZE(attrs); attr_count++) {
+ retval = sysfs_create_file(&rmi4_data->input_dev->dev.kobj,
+ &attrs[attr_count].attr);
+ if (retval < 0) {
+ dev_err(&client->dev,
+ "%s: Failed to create sysfs attributes\n",
+ __func__);
+ goto err_sysfs;
+ }
+ }
+
+ retval = sysfs_create_group(&client->dev.kobj, &attr_group);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to create sysfs attributes\n",
+ __func__);
+ goto err_sysfs;
+ }
+
+ g_dev = &rmi4_data->input_dev->dev;
+
+ return retval;
+
+err_sysfs:
+ sysfs_remove_group(&client->dev.kobj, &attr_group);
+ for (attr_count--; attr_count >= 0; attr_count--) {
+ sysfs_remove_file(&rmi4_data->input_dev->dev.kobj,
+ &attrs[attr_count].attr);
+ }
+
+ cancel_delayed_work_sync(&exp_data.work);
+ flush_workqueue(exp_data.workqueue);
+ destroy_workqueue(exp_data.workqueue);
+
+ synaptics_rmi4_irq_enable(rmi4_data, false);
+
+err_enable_irq:
+
+ synaptics_rmi4_empty_fn_list(rmi4_data);
+ input_unregister_device(rmi4_data->input_dev);
+ rmi4_data->input_dev = NULL;
+
+err_set_input_dev:
+ kfree(rmi4_data);
+
+ return retval;
+}
+
+ /**
+ * synaptics_rmi4_remove()
+ *
+ * Called by the kernel when the association with an I2C device of the
+ * same name is broken (when the driver is unloaded).
+ *
+ * This function terminates the work queue, stops sensor data acquisition,
+ * frees the interrupt, unregisters the driver from the input subsystem,
+ * turns off the power to the sensor, and frees other allocated resources.
+ */
+static int synaptics_rmi4_remove(struct i2c_client *client)
+{
+ unsigned char attr_count;
+ struct synaptics_rmi4_data *rmi4_data = i2c_get_clientdata(client);
+
+ for (attr_count = 0; attr_count < ARRAY_SIZE(attrs); attr_count++) {
+ sysfs_remove_file(&rmi4_data->input_dev->dev.kobj,
+ &attrs[attr_count].attr);
+ }
+
+ cancel_delayed_work_sync(&exp_data.work);
+ flush_workqueue(exp_data.workqueue);
+ destroy_workqueue(exp_data.workqueue);
+
+ synaptics_rmi4_irq_enable(rmi4_data, false);
+
+ synaptics_rmi4_empty_fn_list(rmi4_data);
+ input_unregister_device(rmi4_data->input_dev);
+ rmi4_data->input_dev = NULL;
+
+#ifdef USE_I2C_DMA
+ if (wDMABuf_va)
+ dma_free_coherent(&client->dev, WRITE_SIZE_LIMIT, wDMABuf_va, wDMABuf_pa);
+#endif
+
+ kfree(rmi4_data);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static void synaptics_rmi4_f11_wg(struct synaptics_rmi4_data *rmi4_data,
+ bool enable)
+{
+ int retval;
+ unsigned char reporting_control;
+ struct synaptics_rmi4_fn *fhandler;
+ struct synaptics_rmi4_device_info *rmi;
+
+ rmi = &(rmi4_data->rmi4_mod_info);
+
+ list_for_each_entry(fhandler, &rmi->support_fn_list, link) {
+ if (fhandler->fn_number == SYNAPTICS_RMI4_F11)
+ break;
+ }
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.ctrl_base,
+ &reporting_control,
+ sizeof(reporting_control));
+ if (retval < 0) {
+ dev_err(&(rmi4_data->input_dev->dev),
+ "%s: Failed to change reporting mode\n",
+ __func__);
+ return;
+ }
+
+ reporting_control = (reporting_control & ~MASK_3BIT);
+ if (enable)
+ reporting_control |= F11_WAKEUP_GESTURE_MODE;
+ else
+ reporting_control |= F11_CONTINUOUS_MODE;
+
+ retval = synaptics_rmi4_i2c_write(rmi4_data,
+ fhandler->full_addr.ctrl_base,
+ &reporting_control,
+ sizeof(reporting_control));
+ if (retval < 0) {
+ dev_err(&(rmi4_data->input_dev->dev),
+ "%s: Failed to change reporting mode\n",
+ __func__);
+ return;
+ }
+
+ return;
+}
+
+static void synaptics_rmi4_f12_wg(struct synaptics_rmi4_data *rmi4_data,
+ bool enable)
+{
+ int retval;
+ unsigned char offset;
+ unsigned char reporting_control[3];
+ struct synaptics_rmi4_f12_extra_data *extra_data;
+ struct synaptics_rmi4_fn *fhandler;
+ struct synaptics_rmi4_device_info *rmi;
+
+ rmi = &(rmi4_data->rmi4_mod_info);
+
+ list_for_each_entry(fhandler, &rmi->support_fn_list, link) {
+ if (fhandler->fn_number == SYNAPTICS_RMI4_F12)
+ break;
+ }
+
+ extra_data = (struct synaptics_rmi4_f12_extra_data *)fhandler->extra;
+ offset = extra_data->ctrl20_offset;
+
+ retval = synaptics_rmi4_i2c_read(rmi4_data,
+ fhandler->full_addr.ctrl_base + offset,
+ reporting_control,
+ sizeof(reporting_control));
+ if (retval < 0) {
+ dev_err(&(rmi4_data->input_dev->dev),
+ "%s: Failed to change reporting mode\n",
+ __func__);
+ return;
+ }
+
+ if (enable)
+ reporting_control[2] = F12_WAKEUP_GESTURE_MODE;
+ else
+ reporting_control[2] = F12_CONTINUOUS_MODE;
+
+ retval = synaptics_rmi4_i2c_write(rmi4_data,
+ fhandler->full_addr.ctrl_base + offset,
+ reporting_control,
+ sizeof(reporting_control));
+ if (retval < 0) {
+ dev_err(&(rmi4_data->input_dev->dev),
+ "%s: Failed to change reporting mode\n",
+ __func__);
+ return;
+ }
+
+ return;
+}
+
+static void synaptics_rmi4_wakeup_gesture(struct synaptics_rmi4_data *rmi4_data,
+ bool enable)
+{
+ if (rmi4_data->f11_wakeup_gesture)
+ synaptics_rmi4_f11_wg(rmi4_data, enable);
+ else if (rmi4_data->f12_wakeup_gesture)
+ synaptics_rmi4_f12_wg(rmi4_data, enable);
+
+ return;
+}
+
+ /**
+ * synaptics_rmi4_suspend()
+ *
+ * Called by the kernel during the suspend phase when the system
+ * enters suspend.
+ *
+ * This function stops finger data acquisition and puts the sensor to
+ * sleep (if not already done so during the early suspend phase),
+ * disables the interrupt, and turns off the power to the sensor.
+ */
+static int __maybe_unused synaptics_rmi4_suspend(struct device *dev)
+{
+ struct synaptics_rmi4_exp_fhandler *exp_fhandler;
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(g_dev);
+
+ if (rmi4_data->staying_awake)
+ return 0;
+
+ if (rmi4_data->enable_wakeup_gesture) {
+ synaptics_rmi4_wakeup_gesture(rmi4_data, true);
+ goto exit;
+ }
+
+ if (!rmi4_data->sensor_sleep) {
+ rmi4_data->touch_stopped = true;
+ synaptics_rmi4_irq_enable(rmi4_data, false);
+ synaptics_rmi4_sleep_enable(rmi4_data, true);
+ synaptics_rmi4_free_fingers(rmi4_data);
+ }
+
+ tpd_halt = 1;
+
+exit:
+ mutex_lock(&exp_data.mutex);
+ if (!list_empty(&exp_data.list)) {
+ list_for_each_entry(exp_fhandler, &exp_data.list, link)
+ if (exp_fhandler->exp_fn->suspend != NULL)
+ exp_fhandler->exp_fn->suspend(rmi4_data);
+ }
+ mutex_unlock(&exp_data.mutex);
+
+
+ rmi4_data->sensor_sleep = true;
+
+ return 0;
+}
+
+ /**
+ * synaptics_rmi4_resume()
+ *
+ * Called by the kernel during the resume phase when the system
+ * wakes up from suspend.
+ *
+ * This function turns on the power to the sensor, wakes the sensor
+ * from sleep, enables the interrupt, and starts finger data
+ * acquisition.
+ */
+static int __maybe_unused synaptics_rmi4_resume(struct device *dev)
+{
+ int retval;
+ struct synaptics_rmi4_exp_fhandler *exp_fhandler;
+ struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(g_dev);
+
+ if (rmi4_data->staying_awake)
+ return 0;
+
+ if (rmi4_data->enable_wakeup_gesture) {
+ synaptics_rmi4_wakeup_gesture(rmi4_data, false);
+ goto exit;
+ }
+
+ synaptics_rmi4_sleep_enable(rmi4_data, false);
+ synaptics_rmi4_irq_enable(rmi4_data, true);
+ retval = synaptics_rmi4_reinit_device(rmi4_data);
+ if (retval < 0) {
+ dev_err(&rmi4_data->i2c_client->dev,
+ "%s: Failed to reinit device\n",
+ __func__);
+ return 0;
+ }
+exit:
+ mutex_lock(&exp_data.mutex);
+ if (!list_empty(&exp_data.list)) {
+ list_for_each_entry(exp_fhandler, &exp_data.list, link)
+ if (exp_fhandler->exp_fn->resume != NULL)
+ exp_fhandler->exp_fn->resume(rmi4_data);
+ }
+ mutex_unlock(&exp_data.mutex);
+
+
+ rmi4_data->sensor_sleep = false;
+ rmi4_data->touch_stopped = false;
+ tpd_halt = 0;
+
+ return 0;
+}
+
+#endif
+
+static const struct i2c_device_id synaptics_rmi4_id_table[] = {
+ {"synaptics_dsx", 0},
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, synaptics_rmi4_id_table);
+
+static SIMPLE_DEV_PM_OPS(synaptics_rmi4_pm_ops, synaptics_rmi4_suspend, synaptics_rmi4_resume);
+
+
+static const struct of_device_id synaptics_rmi4_dt_ids[] = {
+ { .compatible = "synaptics_dsx" },
+ { /* sentinel */},
+};
+
+static struct i2c_driver synaptics_rmi4_driver = {
+ .driver = {
+ .name = "synaptics_dsx",
+ .pm = &synaptics_rmi4_pm_ops,
+ .of_match_table = synaptics_rmi4_dt_ids,
+ },
+ .id_table = synaptics_rmi4_id_table,
+ .probe = synaptics_rmi4_probe,
+ .remove = synaptics_rmi4_remove,
+};
+
+module_i2c_driver(synaptics_rmi4_driver);
+
+MODULE_AUTHOR("Synaptics, Inc.");
+MODULE_DESCRIPTION("Synaptics DSX I2C Touch Driver");
+MODULE_LICENSE("GPL v2");
projects / linux.git / commitdiff