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android / kernel / msm / fff483291c07bbb7163b2f658266074272675542 / . / drivers / input / touchscreen / stm / fts.c
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/**
* fts.c
*
* FTS Capacitive touch screen controller (FingerTipS)
*
* Copyright (C) 2016, STMicroelectronics Limited.
* Authors: AMG(Analog Mems Group)
*
* marco.cali@st.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* THE PRESENT SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES
* OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, FOR THE SOLE
* PURPOSE TO SUPPORT YOUR APPLICATION DEVELOPMENT.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM
* THE CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* THIS SOFTWARE IS SPECIFICALLY DESIGNED FOR EXCLUSIVE USE WITH ST PARTS.
*/
/*!
* \file fts.c
* \brief It is the main file which contains all the most important functions
* generally used by a device driver the driver
*/
#include <linux/device.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/interrupt.h>
#include <linux/hrtimer.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <linux/spi/spi.h>
#include <linux/completion.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/notifier.h>
#include <linux/msm_drm_notify.h>
#ifdef KERNEL_ABOVE_2_6_38
#include <linux/input/mt.h>
#endif
#include "fts.h"
#include "fts_lib/ftsCompensation.h"
#include "fts_lib/ftsCore.h"
#include "fts_lib/ftsIO.h"
#include "fts_lib/ftsError.h"
#include "fts_lib/ftsFlash.h"
#include "fts_lib/ftsFrame.h"
#include "fts_lib/ftsGesture.h"
#include "fts_lib/ftsTest.h"
#include "fts_lib/ftsTime.h"
#include "fts_lib/ftsTool.h"
/* Touch simulation MT slot */
#define TOUCHSIM_SLOT_ID 0
#define TOUCHSIM_TIMER_INTERVAL_NS 8333333
/* Switch GPIO values */
#define FTS_SWITCH_GPIO_VALUE_SLPI_MASTER 0
#define FTS_SWITCH_GPIO_VALUE_AP_MASTER 1
/**
* Event handler installer helpers
*/
#define event_id(_e) (EVT_ID_##_e >> 4)
#define handler_name(_h) fts_##_h##_event_handler
#define install_handler(_i, _evt, _hnd) \
do { \
_i->event_dispatch_table[event_id(_evt)] = handler_name(_hnd); \
} while (0)
/* Use decimal-formatted raw data */
#define RAW_DATA_FORMAT_DEC
#ifdef KERNEL_ABOVE_2_6_38
#define TYPE_B_PROTOCOL
#endif
extern SysInfo systemInfo;
extern TestToDo tests;
#ifdef GESTURE_MODE
extern struct mutex gestureMask_mutex;
#endif
char fts_ts_phys[64]; /* /< buffer which store the input device name
* assigned by the kernel */
static u8 typeOfCommand[CMD_STR_LEN]; /* /< buffer used to store the
* command sent from the MP
* device file node */
static int numberParameters; /* /< number of parameter passed through the MP
* device file node */
#ifdef USE_ONE_FILE_NODE
static int feature_feasibility = ERROR_OP_NOT_ALLOW;
#endif
#ifdef GESTURE_MODE
static u8 mask[GESTURE_MASK_SIZE + 2];
extern u16 gesture_coordinates_x[GESTURE_MAX_COORDS_PAIRS_REPORT];
extern u16 gesture_coordinates_y[GESTURE_MAX_COORDS_PAIRS_REPORT];
extern int gesture_coords_reported;
extern struct mutex gestureMask_mutex;
#endif
#ifdef PHONE_KEY
static u8 key_mask; /* /< store the last update of the key mask
* published by the IC */
#endif
extern spinlock_t fts_int;
static int fts_init_sensing(struct fts_ts_info *info);
static int fts_mode_handler(struct fts_ts_info *info, int force);
static int fts_chip_initialization(struct fts_ts_info *info, int init_type);
/**
* Release all the touches in the linux input subsystem
* @param info pointer to fts_ts_info which contains info about device/hw setup
*/
void release_all_touches(struct fts_ts_info *info)
{
unsigned int type = MT_TOOL_FINGER;
int i;
for (i = 0; i < TOUCH_ID_MAX; i++) {
#ifdef STYLUS_MODE
if (test_bit(i, &info->stylus_id))
type = MT_TOOL_PEN;
else
type = MT_TOOL_FINGER;
#endif
input_mt_slot(info->input_dev, i);
input_report_abs(info->input_dev, ABS_MT_PRESSURE, 0);
input_mt_report_slot_state(info->input_dev, type, 0);
input_report_abs(info->input_dev, ABS_MT_TRACKING_ID, -1);
}
input_report_key(info->input_dev, BTN_TOUCH, 0);
input_sync(info->input_dev);
info->touch_id = 0;
#ifdef STYLUS_MODE
info->stylus_id = 0;
#endif
}
/**
* @defgroup file_nodes Driver File Nodes
* Driver publish a series of file nodes used to provide several utilities
* to the host and give him access to different API.
* @{
*/
/**
* @defgroup device_file_nodes Device File Nodes
* @ingroup file_nodes
* Device File Nodes \n
* There are several file nodes that are associated to the device and which
* are designed to be used by the host to enable/disable features or trigger
* some system specific actions \n
* Usually their final path depend on the definition of device tree node of
* the IC (e.g /sys/devices/soc.0/f9928000.i2c/i2c-6/6-0049)
* @{
*/
/***************************************** FW UPGGRADE
* ***************************************************/
/**
* File node function to Update firmware from shell \n
* echo path_to_fw X Y > fwupdate perform a fw update \n
* where: \n
* path_to_fw = file name or path of the the FW to burn, if "NULL" the default
* approach selected in the driver will be used\n
* X = 0/1 to force the FW update whichever fw_version and config_id;
* 0=perform a fw update only if the fw in the file is newer than the fw in the
* chip \n
* Y = 0/1 keep the initialization data; 0 = will erase the initialization data
* from flash, 1 = will keep the initialization data
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which represent an error code (00000000 no
* error) \n
* } = end byte
*/
static ssize_t fts_fwupdate_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int ret, mode[2];
char path[100 + 1]; /* extra byte to hold '\0'*/
struct fts_ts_info *info = dev_get_drvdata(dev);
/* default(if not specified by user) set force = 0 and keep_cx to 1 */
mode[0] = 0;
mode[1] = 1;
/* reading out firmware upgrade parameters */
sscanf(buf, "%100s %d %d", path, &mode[0], &mode[1]);
pr_info("fts_fwupdate_store: path = %s\n", path);
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true);
if (info->sensor_sleep)
ret = ERROR_BUS_WR;
else
ret = flashProcedure(path, mode[0], mode[1]);
info->fwupdate_stat = ret;
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
if (ret == ERROR_BUS_WR)
pr_err("%s: bus is not accessible. ERROR %08X\n",
__func__, ret);
else if (ret < OK)
pr_err("%s Unable to upgrade firmware! ERROR %08X\n",
__func__, ret);
return count;
}
static ssize_t fts_fwupdate_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct fts_ts_info *info = dev_get_drvdata(dev);
/* fwupdate_stat: ERROR code Returned by flashProcedure. */
return scnprintf(buf, PAGE_SIZE, "{ %08X }\n", info->fwupdate_stat);
}
/***************************************** UTILITIES
* (current fw_ver/conf_id, active mode, file fw_ver/conf_id)
***************************************************/
/**
* File node to show on terminal external release version in Little Endian \n
* (first the less significant byte) \n
* cat appid show the external release version of the FW running in the IC
*/
static ssize_t fts_appid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int error;
char temp[100];
error = scnprintf(buf,
PAGE_SIZE,
"%s\n",
printHex("ST-V",
systemInfo.u8_releaseInfo,
EXTERNAL_RELEASE_INFO_SIZE,
temp,
sizeof(temp)));
return error;
}
/**
* File node to show on terminal the mode that is active on the IC \n
* cat mode_active to show the bitmask which indicate
* the modes/features which are running on the IC in a specific instant of time
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1 = 1 byte in HEX format which represent the actual running scan mode
* (@link scan_opt Scan Mode Options @endlink) \n
* X2 = 1 byte in HEX format which represent the bitmask on which is running
* the actual scan mode \n
* X3X4 = 2 bytes in HEX format which represent a bitmask of the features that
* are enabled at this moment (@link feat_opt Feature Selection Options
* @endlink) \n
* } = end byte
* @see fts_mode_handler()
*/
static ssize_t fts_mode_active_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct fts_ts_info *info = dev_get_drvdata(dev);
pr_info("Current mode active = %08X\n", info->mode);
return scnprintf(buf, PAGE_SIZE, "{ %08X }\n", info->mode);
}
/**
* File node to show the fw_ver and config_id of the FW file
* cat fw_file_test show on the kernel log external release
* of the FW stored in the fw file/header file
*/
static ssize_t fts_fw_test_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct fts_ts_info *info = dev_get_drvdata(dev);
Firmware fw;
int ret;
char temp[100] = { 0 };
fw.data = NULL;
ret = readFwFile(info->board->fw_name, &fw, 0);
if (ret < OK)
pr_err("Error during reading FW file! ERROR %08X\n", ret);
else
pr_info("%s, size = %d bytes\n",
printHex("EXT Release = ",
systemInfo.u8_releaseInfo,
EXTERNAL_RELEASE_INFO_SIZE,
temp,
sizeof(temp)),
fw.data_size);
kfree(fw.data);
return 0;
}
static ssize_t fts_status_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct fts_ts_info *info = dev_get_drvdata(dev);
u8 *dump = NULL;
int dumpSize = ERROR_DUMP_ROW_SIZE * ERROR_DUMP_COL_SIZE;
u8 reg;
int written = 0;
int res;
int i;
if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
pr_err("%s: bus is not accessible.\n", __func__);
written += scnprintf(buf, PAGE_SIZE,
"Bus is not accessible.\n");
goto exit;
}
written += scnprintf(buf + written, PAGE_SIZE - written,
"Mode: 0x%08X\n", info->mode);
res = fts_writeReadU8UX(FTS_CMD_HW_REG_R, ADDR_SIZE_HW_REG, ADDR_ICR,
&reg, 1, DUMMY_HW_REG);
if (res < 0)
pr_err("%s: failed to read ICR.\n", __func__);
else
written += scnprintf(buf + written, PAGE_SIZE - written,
"ICR: 0x%02X\n", reg);
dump = kzalloc(dumpSize, GFP_KERNEL);
if (!dump) {
written += strlcat(buf + written, "Buffer allocation failed!\n",
PAGE_SIZE - written);
goto exit;
}
res = dumpErrorInfo(dump, ERROR_DUMP_ROW_SIZE * ERROR_DUMP_COL_SIZE);
if (res >= 0) {
written += strlcat(buf + written, "Error dump:",
PAGE_SIZE - written);
for (i = 0; i < dumpSize; i++) {
if (i % 8 == 0)
written += scnprintf(buf + written,
PAGE_SIZE - written,
"\n%02X: ", i);
written += scnprintf(buf + written,
PAGE_SIZE - written,
"%02X ", dump[i]);
}
written += strlcat(buf + written, "\n", PAGE_SIZE - written);
}
exit:
kfree(dump);
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
return written;
}
#if 0
/**
* File node to obtain and show strength frame
* cat strength_frame to obtain strength data \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which represent an error code (00000000 no
*error) \n
* **** if error code is all 0s **** \n
* FF = 1 byte in HEX format number of rows \n
* SS = 1 byte in HEX format number of columns \n
* N1, ... = the decimal value of each node separated by a coma \n
* ********************************* \n
* } = end byte
*/
static ssize_t fts_strength_frame_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
MutualSenseFrame frame;
int res, count, j, size = (6 * 2) + 1, index = 0;
char *all_strbuff = NULL;
/* char buff[CMD_STR_LEN] = {0}; */
/* struct i2c_client *client = to_i2c_client(dev); */
struct fts_ts_info *info = dev_get_drvdata(dev);
frame.node_data = NULL;
res = fts_disableInterrupt();
if (res < OK)
goto END;
res = senseOn();
if (res < OK) {
pr_err("%s: could not start scanning! ERROR %08X\n",
__func__, res);
goto END;
}
mdelay(WAIT_FOR_FRESH_FRAMES);
res = senseOff();
if (res < OK) {
pr_err("%s: could not finish scanning! ERROR %08X\n",
__func__, res);
goto END;
}
mdelay(WAIT_AFTER_SENSEOFF);
flushFIFO();
res = getMSFrame3(MS_STRENGTH, &frame);
if (res < OK) {
pr_err("%s: could not get the frame! ERROR %08X\n",
__func__, res);
goto END;
} else {
size += (res * 6);
pr_info("The frame size is %d words\n", res);
res = OK;
print_frame_short("MS Strength frame =", array1dTo2d_short(
frame.node_data, frame.node_data_size,
frame.header.sense_node),
frame.header.force_node,
frame.header.sense_node);
}
END:
flushFIFO();
release_all_touches(info);
fts_mode_handler(info, 1);
all_strbuff = (char *)kzalloc(size * sizeof(char), GFP_KERNEL);
if (all_strbuff != NULL) {
snprintf(&all_strbuff[index], 11, "{ %08X", res);
index += 10;
if (res >= OK) {
snprintf(&all_strbuff[index], 3, "%02X",
(u8)frame.header.force_node);
index += 2;
snprintf(&all_strbuff[index], 3, "%02X",
(u8)frame.header.sense_node);
index += 2;
for (j = 0; j < frame.node_data_size; j++) {
snprintf(&all_strbuff[index], 10, "%d,%n",
frame.node_data[j], &count);
index += count;
}
kfree(frame.node_data);
}
snprintf(&all_strbuff[index], 3, " }");
index += 2;
count = snprintf(buf, TSP_BUF_SIZE, "%s\n", all_strbuff);
kfree(all_strbuff);
} else
pr_err("%s: Unable to allocate all_strbuff! ERROR %08X\n",
__func__, ERROR_ALLOC);
fts_enableInterrupt();
return count;
}
#endif
/***************************************** FEATURES
***************************************************/
/* TODO: edit this function according to the features policy to allow during
* the screen on/off, following is shown an example but check always with ST
* for more details */
/**
* Check if there is any conflict in enable/disable a particular feature
* considering the features already enabled and running
* @param info pointer to fts_ts_info which contains info about the device
* and its hw setup
* @param feature code of the feature that want to be tested
* @return OK if is possible to enable/disable feature, ERROR_OP_NOT_ALLOW
* in case of any other conflict
*/
int check_feature_feasibility(struct fts_ts_info *info, unsigned int feature)
{
int res = OK;
/* Example based on the status of the screen and on the feature
* that is trying to enable */
/*res=ERROR_OP_NOT_ALLOW;
* if(info->resume_bit ==0){
* switch(feature){
#ifdef GESTURE_MODE
* case FEAT_SEL_GESTURE:
* res = OK;
* break;
#endif
* default:
* pr_err("%s: Feature not allowed in this
* operating mode! ERROR %08X\n", __func__, res);
* break;
*
* }
* }else{
* switch(feature){
#ifdef GESTURE_MODE
* case FEAT_SEL_GESTURE:
#endif
* case FEAT__SEL_GLOVE: // glove mode can only activate
*during sense on
* res = OK;
* break;
*
* default:
* pr_err("%s: Feature not allowed in this
* operating mode! ERROR %08X\n", __func__, res);
* break;
*
* }
* }*/
/* Example based only on the feature that is going to be activated */
switch (feature) {
case FEAT_SEL_GESTURE:
if (info->cover_enabled == 1) {
res = ERROR_OP_NOT_ALLOW;
pr_err("%s: Feature not allowed when in Cover mode! ERROR %08X\n",
__func__, res);
/* for example here can be placed a code for disabling
* the cover mode when gesture is activated */
}
break;
case FEAT_SEL_GLOVE:
if (info->gesture_enabled == 1) {
res = ERROR_OP_NOT_ALLOW;
pr_err("%s: Feature not allowed when Gestures enabled! ERROR %08X\n",
__func__, res);
/* for example here can be placed a code for disabling
* the gesture mode when cover is activated
* (that means that cover mode has
* an higher priority on gesture mode) */
}
break;
default:
pr_info("%s: Feature Allowed!\n", __func__);
}
return res;
}
#ifdef USE_ONE_FILE_NODE
/**
* File node to enable some feature
* echo XX 00/01 > feature_enable to enable/disable XX
* (possible values @link feat_opt Feature Selection Options @endlink) feature
* cat feature_enable to show the result of enabling/disabling process
* echo 01/00 > feature_enable; cat feature_enable to perform
* both actions stated before in just one call \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which represent an error code (00000000 =
* no error) \n
* } = end byte
*/
static ssize_t fts_feature_enable_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct fts_ts_info *info = dev_get_drvdata(dev);
char *p = (char *)buf;
unsigned int temp;
int res = OK;
if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
res = ERROR_BUS_WR;
pr_err("%s: bus is not accessible.", __func__);
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
return count;
}
if ((count - 2 + 1) / 3 != 1)
pr_err("fts_feature_enable: Number of parameter wrong! %d > %d\n",
(count - 2 + 1) / 3, 1);
else {
sscanf(p, "%02X ", &temp);
p += 3;
res = check_feature_feasibility(info, temp);
if (res >= OK) {
switch (temp) {
#ifdef GESTURE_MODE
case FEAT_SEL_GESTURE:
sscanf(p, "%02X ", &info->gesture_enabled);
pr_info("fts_feature_enable: Gesture Enabled = %d\n",
info->gesture_enabled);
break;
#endif
#ifdef GLOVE_MODE
case FEAT_SEL_GLOVE:
sscanf(p, "%02X ", &info->glove_enabled);
pr_info("fts_feature_enable: Glove Enabled = %d\n",
info->glove_enabled);
break;
#endif
#ifdef STYLUS_MODE
case FEAT_SEL_STYLUS:
sscanf(p, "%02X ", &info->stylus_enabled);
pr_info("fts_feature_enable: Stylus Enabled = %d\n",
info->stylus_enabled);
break;
#endif
#ifdef COVER_MODE
case FEAT_SEL_COVER:
sscanf(p, "%02X ", &info->cover_enabled);
pr_info("fts_feature_enable: Cover Enabled = %d\n",
info->cover_enabled);
break;
#endif
#ifdef CHARGER_MODE
case FEAT_SEL_CHARGER:
sscanf(p, "%02X ", &info->charger_enabled);
pr_info("fts_feature_enable: Charger Enabled = %d\n",
info->charger_enabled);
break;
#endif
#ifdef GRIP_MODE
case FEAT_SEL_GRIP:
sscanf(p, "%02X ", &info->grip_enabled);
pr_info("fts_feature_enable: Grip Enabled = %d\n",
info->grip_enabled);
break;
#endif
default:
pr_err("fts_feature_enable: Feature %08X not valid! ERROR %08X\n",
temp, ERROR_OP_NOT_ALLOW);
res = ERROR_OP_NOT_ALLOW;
}
feature_feasibility = res;
}
if (feature_feasibility >= OK)
feature_feasibility = fts_mode_handler(info, 1);
else
pr_err("%s: Call echo XX 00/01 > feature_enable with a correct feature value (XX)! ERROR %08X\n",
__func__, res);
}
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
return count;
}
static ssize_t fts_feature_enable_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int count = 0;
if (feature_feasibility < OK)
pr_err("%s: Call before echo XX 00/01 > feature_enable with a correct feature value (XX)! ERROR %08X\n",
__func__, feature_feasibility);
count += scnprintf(buf + count,
PAGE_SIZE - count, "{ %08X }\n",
feature_feasibility);
feature_feasibility = ERROR_OP_NOT_ALLOW;
return count;
}
#else
#ifdef GRIP_MODE
/**
* File node to set the grip mode
* echo 01/00 > grip_mode to enable/disable glove mode \n
* cat grip_mode to show the status of the grip_enabled switch \n
* echo 01/00 > grip_mode; cat grip_mode to enable/disable grip
*mode
* and see the switch status in just one call \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which represent the value
* info->grip_enabled (1 = enabled; 0= disabled) \n
* } = end byte
*/
static ssize_t fts_grip_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int count = 0;
struct fts_ts_info *info = dev_get_drvdata(dev);
pr_info("%s: grip_enabled = %d\n", __func__,
info->grip_enabled);
count += scnprintf(buf + count,
PAGE_SIZE - count, "{ %08X }\n",
info->grip_enabled);
return count;
}
static ssize_t fts_grip_mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
char *p = (char *)buf;
unsigned int temp = FEAT_DISABLE;
int res;
struct fts_ts_info *info = dev_get_drvdata(dev);
ssize_t retval = count;
if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
pr_err("%s: bus is not accessible.", __func__);
goto exit;
}
/* in case of a different elaboration of the input, just modify
* this initial part of the code according to customer needs */
if ((count + 1) / 3 != 1)
pr_err("%s: Number of bytes of parameter wrong! %zu != 1 byte\n",
__func__, (count + 1) / 3);
else {
res = sscanf(p, "%02X ", &temp);
if ((res != 1) || (temp > FEAT_ENABLE)) {
pr_err("%s: Missing or invalid grip mode(%u)\n",
__func__, temp);
retval = -EINVAL;
goto exit;
}
/* standard code that should be always used when a feature is enabled! */
/* first step : check if the wanted feature can be enabled */
/* second step: call fts_mode_handler to actually enable it */
/* NOTE: Disabling a feature is always allowed by default */
res = check_feature_feasibility(info, FEAT_SEL_GRIP);
if (res >= OK || temp == FEAT_DISABLE) {
info->grip_enabled = temp;
res = fts_mode_handler(info, 1);
if (res < OK)
pr_err("%s: Error during fts_mode_handler! ERROR %08X\n",
__func__, res);
}
}
exit:
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
return retval;
}
#endif
#ifdef CHARGER_MODE
/**
* File node to set the glove mode
* echo XX/00 > charger_mode to value >0 to enable
* (possible values: @link charger_opt Charger Options @endlink),
* 00 to disable charger mode \n
* cat charger_mode to show the status of the charger_enabled switch \n
* echo 01/00 > charger_mode; cat charger_mode to enable/disable
* charger mode and see the switch status in just one call \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which represent the value
* info->charger_enabled (>0 = enabled; 0= disabled) \n
* } = end byte
*/
static ssize_t fts_charger_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int count = 0;
struct fts_ts_info *info = dev_get_drvdata(dev);
pr_info("%s: charger_enabled = %d\n", __func__,
info->charger_enabled);
count += scnprintf(buf + count,
PAGE_SIZE - count, "{ %08X }\n",
info->charger_enabled);
return count;
}
static ssize_t fts_charger_mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
char *p = (char *)buf;
unsigned int temp = FEAT_DISABLE;
int res;
struct fts_ts_info *info = dev_get_drvdata(dev);
ssize_t retval = count;
if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
pr_err("%s: bus is not accessible.\n", __func__);
goto exit;
}
/* in case of a different elaboration of the input, just modify this
* initial part of the code according to customer needs */
if ((count + 1) / 3 != 1) {
pr_err("%s: Number of bytes of parameter wrong! %zu != 1 byte\n",
__func__, (count + 1) / 3);
retval = -EINVAL;
} else {
res = sscanf(p, "%02X ", &temp);
if ((res != 1) || (temp > FEAT_ENABLE)) {
pr_err("%s: Missing or invalid charger mode (%u)\n",
__func__, temp);
retval = -EINVAL;
goto exit;
}
/** standard code that should be always used when a feature is enabled!
* first step : check if the wanted feature can be enabled
* second step: call fts_mode_handler to actually enable it
* NOTE: Disabling a feature is always allowed by default
*/
res = check_feature_feasibility(info, FEAT_SEL_CHARGER);
if (res >= OK || temp == FEAT_DISABLE) {
info->charger_enabled = temp;
res = fts_mode_handler(info, 1);
if (res < OK)
pr_err("%s: Error during fts_mode_handler! ERROR %08X\n",
__func__, res);
}
}
exit:
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
return retval;
}
#endif
#ifdef GLOVE_MODE
/**
* File node to set the glove mode
* echo 01/00 > glove_mode to enable/disable glove mode \n
* cat glove_mode to show the status of the glove_enabled switch \n
* echo 01/00 > glove_mode; cat glove_mode to enable/disable glove mode and
* see the switch status in just one call \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which represent the of value
* info->glove_enabled (1 = enabled; 0= disabled) \n
* } = end byte
*/
static ssize_t fts_glove_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int count = 0;
struct fts_ts_info *info = dev_get_drvdata(dev);
pr_info("%s: glove_enabled = %d\n", __func__, info->glove_enabled);
count += scnprintf(buf + count,
PAGE_SIZE - count, "{ %08X }\n",
info->glove_enabled);
return count;
}
static ssize_t fts_glove_mode_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
char *p = (char *)buf;
unsigned int temp = FEAT_DISABLE;
int res;
struct fts_ts_info *info = dev_get_drvdata(dev);
ssize_t retval = count;
if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
pr_err("%s: bus is not accessible.\n", __func__);
goto exit;
}
/* in case of a different elaboration of the input, just modify this
* initial part of the code according to customer needs */
if ((count + 1) / 3 != 1) {
pr_err("%s: Number of bytes of parameter wrong! %zu != 1 byte\n",
__func__, (count + 1) / 3);
retval = -EINVAL;
} else {
res = sscanf(p, "%02X ", &temp);
if ((res != 1) || (temp > FEAT_ENABLE)) {
pr_err("%s: Missing or invalid glove mode(%u)\n",
__func__, temp);
retval = -EINVAL;
goto exit;
}
/* standard code that should be always used when a feature is enabled! */
/* first step : check if the wanted feature can be enabled */
/* second step: call fts_mode_handler to actually enable it */
/* NOTE: Disabling a feature is always allowed by default */
res = check_feature_feasibility(info, FEAT_SEL_GLOVE);
if (res >= OK || temp == FEAT_DISABLE) {
info->glove_enabled = temp;
res = fts_mode_handler(info, 1);
if (res < OK)
pr_err("%s: Error during fts_mode_handler! ERROR %08X\n",
__func__, res);
}
}
exit:
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
return retval;
}
#endif
#ifdef COVER_MODE
/* echo 01/00 > cover_mode to enable/disable cover mode */
/* cat cover_mode to show the status of the cover_enabled switch
* (example output in the terminal = "AA00000001BB" if the switch is enabled) */
/* echo 01/00 > cover_mode; cat cover_mode to enable/disable cover mode and
* see the switch status in just one call */
/* NOTE: the cover can be handled also using a notifier, in this case the body
* of these functions should be copied in the notifier callback */
/**
* File node to set the cover mode
* echo 01/00 > cover_mode to enable/disable cover mode \n
* cat cover_mode to show the status of the cover_enabled switch \n
* echo 01/00 > cover_mode; cat cover_mode to enable/disable cover mode
* and see the switch status in just one call \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which is the value of info->cover_enabled
* (1 = enabled; 0= disabled)\n
* } = end byte \n
* NOTE: \n
* the cover can be handled also using a notifier, in this case the body of
* these functions should be copied in the notifier callback
*/
static ssize_t fts_cover_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int count = 0;
struct fts_ts_info *info = dev_get_drvdata(dev);
pr_info("%s: cover_enabled = %d\n", __func__, info->cover_enabled);
count += scnprintf(buf + count,
PAGE_SIZE - count, "{ %08X }\n",
info->cover_enabled);
return count;
}
static ssize_t fts_cover_mode_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
char *p = (char *)buf;
unsigned int temp = FEAT_DISABLE;
int res;
struct fts_ts_info *info = dev_get_drvdata(dev);
ssize_t retval = count;
if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
pr_err("%s: bus is not accessible.\n", __func__);
goto exit;
}
/* in case of a different elaboration of the input, just modify this
* initial part of the code according to customer needs */
if ((count + 1) / 3 != 1)
pr_err("%s: Number of bytes of parameter wrong! %zu != 1 byte\n",
__func__, (count + 1) / 3);
else {
res = sscanf(p, "%02X ", &temp);
if ((res != 1) || (temp > FEAT_ENABLE)) {
pr_err("%s: Missing or invalid cover mode(%u)\n",
__func__, temp);
retval = -EINVAL;
goto exit;
}
p += 3;
/* standard code that should be always used when a feature is enabled! */
/* first step : check if the wanted feature can be enabled */
/* second step: call fts_mode_handler to actually enable it */
/* NOTE: Disabling a feature is always allowed by default */
res = check_feature_feasibility(info, FEAT_SEL_COVER);
if (res >= OK || temp == FEAT_DISABLE) {
info->cover_enabled = temp;
res = fts_mode_handler(info, 1);
if (res < OK)
pr_err("%s: Error during fts_mode_handler! ERROR %08X\n",
__func__, res);
}
}
exit:
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
return retval;
}
#endif
#ifdef STYLUS_MODE
/**
* File node to enable the stylus report
* echo 01/00 > stylus_mode to enable/disable stylus mode \n
* cat stylus_mode to show the status of the stylus_enabled switch \n
* echo 01/00 > stylus_mode; cat stylus_mode to enable/disable stylus mode
* and see the switch status in just one call \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which is the value of info->stylus_enabled
* (1 = enabled; 0= disabled)\n
* } = end byte
*/
static ssize_t fts_stylus_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int count = 0;
struct fts_ts_info *info = dev_get_drvdata(dev);
pr_info("%s: stylus_enabled = %d\n", __func__, info->stylus_enabled);
count += scnprintf(buf + count,
PAGE_SIZE - count, "{ %08X }\n",
info->stylus_enabled);
return count;
}
static ssize_t fts_stylus_mode_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
char *p = (char *)buf;
unsigned int temp = FEAT_DISABLE;
int res;
struct fts_ts_info *info = dev_get_drvdata(dev);
ssize_t retval = count;
/* in case of a different elaboration of the input, just modify this
* initial part of the code according to customer needs */
if ((count + 1) / 3 != 1)
pr_err("%s: Number of bytes of parameter wrong! %zu != 1 byte\n",
__func__, (count + 1) / 3);
else {
res = sscanf(p, "%02X ", &temp);
if ((res != 1) || (temp > FEAT_ENABLE)) {
pr_err("%s: Missing or invalid stylus mode(%u)\n",
__func__, temp);
retval = -EINVAL;
goto exit;
}
info->stylus_enabled = temp;
}
exit:
return retval;
}
#endif
#endif
/***************************************** GESTURES
***************************************************/
#ifdef GESTURE_MODE
#ifdef USE_GESTURE_MASK /* if this define is used, a gesture bit mask
* is used as method to select the gestures to
* enable/disable */
/**
* File node used by the host to set the gesture mask to enable or disable
* echo EE X1 X2 ~~ > gesture_mask set the gesture to disable/enable;
* EE = 00(disable) or 01(enable) \n
* X1 ~~ = gesture mask (example 06 00 ~~ 00 this gesture mask represents
* the gestures with ID = 1 and 2) can be specified
* from 1 to GESTURE_MASK_SIZE bytes, \n
* if less than GESTURE_MASK_SIZE bytes are passed as arguments,
* the omit bytes of the mask maintain the previous settings \n
* if one or more gestures is enabled the driver will automatically
* enable the gesture mode, If all the gestures are disabled the driver
* automatically will disable the gesture mode \n
* cat gesture_mask set inside the specified mask and return an error code
* for the operation \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which represent an error code for enabling
* the mask (00000000 = no error)\n
* } = end byte \n\n
* if USE_GESTURE_MASK is not define the usage of the function become: \n\n
* echo EE X1 X2 ~~ > gesture_mask set the gesture to disable/enable;
* EE = 00(disable) or 01(enable) \n
* X1 ~~ = gesture IDs (example 01 02 05 represent the gestures with ID = 1, 2
* and 5)
* there is no limit of the IDs passed as arguments, (@link gesture_opt Gesture
* IDs @endlink) \n
* if one or more gestures is enabled the driver will automatically enable
* the gesture mode. If all the gestures are disabled the driver automatically
* will disable the gesture mode. \n
* cat gesture_mask to show the status of the gesture enabled switch \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which is the value of info->gesture_enabled
* (1 = enabled; 0= disabled)\n
* } = end byte
*/
static ssize_t fts_gesture_mask_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int count = 0, res, temp;
struct fts_ts_info *info = dev_get_drvdata(dev);
if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
res = ERROR_BUS_WR;
pr_err("%s: bus is not accessible.\n", __func__);
scnprintf(buf, PAGE_SIZE, "{ %08X }\n", res);
goto exit;
}
if (mask[0] == 0) {
res = ERROR_OP_NOT_ALLOW;
pr_err("%s: Call before echo enable/disable xx xx .... > gesture_mask with a correct number of parameters! ERROR %08X\n",
__func__, res);
} else {
if (mask[1] == FEAT_ENABLE || mask[1] == FEAT_DISABLE)
res = updateGestureMask(&mask[2], mask[0], mask[1]);
else
res = ERROR_OP_NOT_ALLOW;
if (res < OK)
pr_err("fts_gesture_mask_store: ERROR %08X\n", res);
}
res |= check_feature_feasibility(info, FEAT_SEL_GESTURE);
temp = isAnyGestureActive();
if (res >= OK || temp == FEAT_DISABLE)
info->gesture_enabled = temp;
pr_info("fts_gesture_mask_store: Gesture Enabled = %d\n",
info->gesture_enabled);
count += scnprintf(buf + count,
PAGE_SIZE - count, "{ %08X }\n", res);
mask[0] = 0;
exit:
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
return count;
}
static ssize_t fts_gesture_mask_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
char *p = (char *)buf;
int n, res;
unsigned int temp = 0;
ssize_t retval = count;
if ((count + 1) / 3 > GESTURE_MASK_SIZE + 1) {
pr_err("fts_gesture_mask_store: Number of bytes of parameter wrong! %zu > (enable/disable + %d )\n",
(count + 1) / 3, GESTURE_MASK_SIZE);
mask[0] = 0;
} else {
mask[0] = ((count + 1) / 3) - 1;
for (n = 1; n <= (count + 1) / 3; n++) {
res = sscanf(p, "%02X ", &temp);
if (res != 1) {
pr_err("%s: Invalid input\n", __func__);
retval = -EINVAL;
goto exit;
}
p += 3;
mask[n] = (u8)temp;
pr_info("mask[%d] = %02X\n", n, mask[n]);
}
}
exit:
return retval;
}
#else /* if this define is not used, to select the gestures to enable/disable
* are used the IDs of the gestures */
/* echo EE X1 X2 ... > gesture_mask set the gesture to disable/enable;
* EE = 00(disable) or 01(enable); X1 ... = gesture IDs
* (example 01 02 05... represent the gestures with ID = 1, 2 and 5)
* there is no limit of the parameters that can be passed,
* of course the gesture IDs should be valid (all the valid IDs are listed in
* ftsGesture.h) */
/* cat gesture_mask enable/disable the given gestures, if one or more
* gestures is enabled the driver will automatically enable the gesture mode.
* If all the gestures are disabled the driver automatically will disable the
* gesture mode.
* At the end an error code will be printed
* (example output in the terminal = "AA00000000BB" if there are no errors) */
/* echo EE X1 X2 ... > gesture_mask; cat gesture_mask perform in one command
* both actions stated before */
/**
* File node used by the host to set the gesture mask to enable or disable
* echo EE X1 X2 ~~ > gesture_mask set the gesture to disable/enable;
* EE = 00(disable) or 01(enable) \n
* X1 ~ = gesture IDs (example 01 02 05 represent the gestures with ID = 1, 2
* and 5)
* there is no limit of the IDs passed as arguments, (@link gesture_opt Gesture
* IDs @endlink) \n
* if one or more gestures is enabled the driver will automatically enable
* the gesture mode, If all the gestures are disabled the driver automatically
* will disable the gesture mode \n
* cat gesture_mask to show the status of the gesture enabled switch \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which is the value of info->gesture_enabled
* (1 = enabled; 0= disabled)\n
* } = end byte
*/
static ssize_t fts_gesture_mask_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int count = 0;
struct fts_ts_info *info = dev_get_drvdata(dev);
pr_info("fts_gesture_mask_show: gesture_enabled = %d\n",
info->gesture_enabled);
count += scnprintf(buf + count,
PAGE_SIZE - count, "{ %08X }\n",
info->gesture_enabled);
return count;
}
static ssize_t fts_gesture_mask_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
char *p = (char *)buf;
int n;
unsigned int temp = 0;
int res;
struct fts_ts_info *info = dev_get_drvdata(dev);
ssize_t retval = count;
if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
pr_err("%s: bus is not accessible.\n", __func__);
goto exit;
}
if ((count + 1) / 3 < 2 || (count + 1) / 3 > GESTURE_MASK_SIZE + 1) {
pr_err("fts_gesture_mask_store: Number of bytes of parameter wrong! %d < or > (enable/disable + at least one gestureID or max %d bytes)\n",
(count + 1) / 3, GESTURE_MASK_SIZE);
mask[0] = 0;
retval = -EINVAL;
} else {
memset(mask, 0, GESTURE_MASK_SIZE + 2);
mask[0] = ((count + 1) / 3) - 1;
res = sscanf(p, "%02X ", &temp);
if (res != 1) {
pr_err("%s: Invalid input(%u)\n",__func__, temp);
mask[0] = 0;
retval = -EINVAL;
goto bad_param;
}
p += 3;
mask[1] = (u8)temp;
for (n = 1; n < (count + 1) / 3; n++) {
res = sscanf(p, "%02X ", &temp);
if (res != 1) {
pr_err("%s: Invalid input\n", __func__);
mask[0] = 0;
retval = -EINVAL;
goto bad_param;
}
p += 3;
fromIDtoMask((u8)temp, &mask[2], GESTURE_MASK_SIZE);
}
for (n = 0; n < GESTURE_MASK_SIZE + 2; n++)
pr_info("mask[%d] = %02X\n", n, mask[n]);
}
bad_param;
if (mask[0] == 0) {
res = ERROR_OP_NOT_ALLOW;
pr_err("%s: Call before echo enable/disable xx xx .... > gesture_mask with a correct number of parameters! ERROR %08X\n",
__func__, res);
goto exit;
}
if (mask[1] == FEAT_ENABLE || mask[1] == FEAT_DISABLE)
res = updateGestureMask(&mask[2], mask[0], mask[1]);
else
res = ERROR_OP_NOT_ALLOW;
if (res < OK)
pr_err("fts_gesture_mask_store: ERROR %08X\n", res);
res = check_feature_feasibility(info, FEAT_SEL_GESTURE);
temp = isAnyGestureActive();
if (res >= OK || temp == FEAT_DISABLE)
info->gesture_enabled = temp;
res = fts_mode_handler(info, 0);
exit:
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
return retval;
}
#endif
/**
* File node to read the coordinates of the last gesture drawn by the user \n
* cat gesture_coordinates to obtain the gesture coordinates \n
* the string returned in the shell follow this up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which represent an error code (00000000 =
*OK) \n
* \n if error code = 00000000 \n
* CC = 1 byte in HEX format number of coords (pair of x,y) returned \n
* XXiYYi ... = XXi 2 bytes in HEX format for x[i] and
* YYi 2 bytes in HEX format for y[i] (big endian) \n
* \n
* } = end byte
*/
static ssize_t fts_gesture_coordinates_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int size = PAGE_SIZE;
int count = 0, res, i = 0;
pr_info("%s: Getting gestures coordinates...\n", __func__);
if (gesture_coords_reported < OK) {
pr_err("%s: invalid coordinates! ERROR %08X\n",
__func__, gesture_coords_reported);
res = gesture_coords_reported;
} else {
size += gesture_coords_reported * 2 * 4 + 2;
/* coords are pairs of x,y (*2) where each coord is
* short(2bytes=4char)(*4) + 1 byte(2char) num of coords (+2)
**/
res = OK; /* set error code to OK */
}
count += scnprintf(buf + count,
size - count, "{ %08X", res);
if (res >= OK) {
count += scnprintf(buf + count,
size - count, "%02X",
gesture_coords_reported);
for (i = 0; i < gesture_coords_reported; i++) {
count += scnprintf(buf + count,
size - count,
"%04X",
gesture_coordinates_x[i]);
count += scnprintf(buf + count,
size - count,
"%04X",
gesture_coordinates_y[i]);
}
}
count += scnprintf(buf + count, size - count, " }\n");
pr_info("%s: Getting gestures coordinates FINISHED!\n", __func__);
return count;
}
#endif
/* Touch simulation hr timer expiry callback */
static enum hrtimer_restart touchsim_timer_cb(struct hrtimer *timer)
{
struct fts_touchsim *touchsim = container_of(timer,
struct fts_touchsim,
hr_timer);
enum hrtimer_restart retval = HRTIMER_NORESTART;
if (touchsim->is_running) {
hrtimer_forward_now(timer,
ns_to_ktime(TOUCHSIM_TIMER_INTERVAL_NS));
retval = HRTIMER_RESTART;
}
/* schedule the task to report touch coordinates to kernel
* input subsystem
*/
queue_work(touchsim->wq, &touchsim->work);
return retval;
}
/* Compute the next touch coordinate(x,y) */
static void touchsim_refresh_coordinates(struct fts_touchsim *touchsim)
{
struct fts_ts_info *info = container_of(touchsim,
struct fts_ts_info,
touchsim);
const int x_start = info->board->x_axis_max / 10;
const int x_max = (info->board->x_axis_max * 9) / 10;
const int y_start = info->board->y_axis_max / 4;
const int y_max = info->board->y_axis_max / 2;
touchsim->x += touchsim->x_step;
touchsim->y += touchsim->y_step;
if (touchsim->x < x_start || touchsim->x > x_max)
touchsim->x_step *= -1;
if (touchsim->y < y_start || touchsim->y > y_max)
touchsim->y_step *= -1;
}
/* Report touch contact */
static void touchsim_report_contact_event(struct input_dev *dev, int slot_id,
int x, int y, int z)
{
/* report the cordinates to the input subsystem */
input_mt_slot(dev, slot_id);
input_report_key(dev, BTN_TOUCH, true);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
input_report_abs(dev, ABS_MT_POSITION_X, x);
input_report_abs(dev, ABS_MT_POSITION_Y, y);
input_report_abs(dev, ABS_MT_PRESSURE, z);
}
/* Work callback to report the touch co-ordinates to input subsystem */
static void touchsim_work(struct work_struct *work)
{
struct fts_touchsim *touchsim = container_of(work,
struct fts_touchsim,
work);
struct fts_ts_info *info = container_of(touchsim,
struct fts_ts_info,
touchsim);
u64 timestamp_ns = ktime_get_ns();
/* prevent CPU from entering deep sleep */
pm_qos_update_request(&info->pm_qos_req, 100);
/* Notify the PM core that the wakeup event will take 1 sec */
__pm_wakeup_event(&info->wakesrc, jiffies_to_msecs(HZ));
/* get the next touch coordinates */
touchsim_refresh_coordinates(touchsim);
/* send the touch co-ordinates */
touchsim_report_contact_event(info->input_dev, TOUCHSIM_SLOT_ID,
touchsim->x, touchsim->y, 1);
input_sync(info->input_dev);
heatmap_read(&info->v4l2, timestamp_ns);
pm_qos_update_request(&info->pm_qos_req, PM_QOS_DEFAULT_VALUE);
}
/* Start the touch simulation */
static int touchsim_start(struct fts_touchsim *touchsim)
{
struct fts_ts_info *info = container_of(touchsim,
struct fts_ts_info,
touchsim);
if (!touchsim->wq) {
pr_err("%s: touch simulation test wq is not available!\n",
__func__);
return -EFAULT;
}
if (touchsim->is_running) {
pr_err("%s: test in progress!\n", __func__);
return -EBUSY;
}
/* setup the initial touch coordinates*/
touchsim->x = info->board->x_axis_max / 10;
touchsim->y = info->board->y_axis_max / 4;
touchsim->is_running = true;
touchsim->x_step = 2;
touchsim->y_step = 2;
/* Disable touch interrupts from hw */
fts_disableInterrupt();
/* Release all touches in the linux input subsystem */
release_all_touches(info);
/* setup and start a hr timer to be fired every 120Hz(~8.333333ms) */
hrtimer_init(&touchsim->hr_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
touchsim->hr_timer.function = touchsim_timer_cb;
hrtimer_start(&touchsim->hr_timer,
ns_to_ktime(TOUCHSIM_TIMER_INTERVAL_NS),
HRTIMER_MODE_ABS);
return OK;
}
/* Stop the touch simulation test */
static int touchsim_stop(struct fts_touchsim *touchsim)
{
struct fts_ts_info *info = container_of(touchsim,
struct fts_ts_info,
touchsim);
if (!touchsim->is_running) {
pr_err("%s: test is not in progress!\n", __func__);
return -EINVAL;
}
/* Set the flag here to make sure flushed work doesn't
* re-start the timer
*/
touchsim->is_running = false;
hrtimer_cancel(&touchsim->hr_timer);
/* flush any pending work */
flush_workqueue(touchsim->wq);
/* Release all touches in the linux input subsystem */
release_all_touches(info);
/* re enable the hw touch interrupt */
fts_enableInterrupt();
return OK;
}
/** sysfs file node to handle the touch simulation test request.
* "cat touchsim" shows if the test is running
* Possible outputs:
* 1 = test running.
* 0 = test not running.
*/
static ssize_t fts_touch_simulation_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct fts_ts_info *info = dev_get_drvdata(dev);
return scnprintf(buf, PAGE_SIZE, "%u\n",
info->touchsim.is_running ? 1 : 0);
}
/** sysfs file node to handle the touch simulation test request.
* "echo <cmd> > touchsim" to execute a command
* Possible commands (cmd):
* 1 = start the test if not already running.
* 0 = stop the test if its running.
*/
static ssize_t fts_touch_simulation_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct fts_ts_info *info = dev_get_drvdata(dev);
ssize_t retval = count;
u8 result;
if (!mutex_trylock(&info->diag_cmd_lock)) {
pr_err("%s: Blocking concurrent access\n", __func__);
retval = -EBUSY;
goto out;
}
if (kstrtou8(buf, 16, &result)) {
pr_err("%s:bad input. valid inputs are either 0 or 1!\n",
__func__);
retval = -EINVAL;
goto unlock;
}
if (result == 1)
touchsim_start(&info->touchsim);
else if (result == 0)
touchsim_stop(&info->touchsim);
else
pr_err("%s:Invalid cmd(%u). valid cmds are either 0 or 1!\n",
__func__, result);
unlock:
mutex_unlock(&info->diag_cmd_lock);
out:
return retval;
}
/***************************************** PRODUCTION TEST
***************************************************/
/**
* File node to execute the Mass Production Test or to get data from the IC
* (raw or ms/ss init data)
* echo cmd > stm_fts_cmd to execute a command \n
* cat stm_fts_cmd to show the result of the command \n
* echo cmd > stm_fts_cmd; cat stm_fts_cmd to execute and show the result
* in just one call \n
* the string returned in the shell is made up as follow: \n
* { = start byte \n
* X1X2X3X4 = 4 bytes in HEX format which represent an error_code (00000000 =
* OK)\n
* (optional) data = data coming from the command executed represented as HEX
* string \n
* Not all the command return additional data \n
* } = end byte \n
* \n
* Possible commands (cmd): \n
* - 00 = MP Test -> return error_code \n
* - 01 = ITO Test -> return error_code \n
* - 03 = MS Raw Test -> return error_code \n
* - 04 = MS Init Data Test -> return error_code \n
* - 05 = SS Raw Test -> return error_code \n
* - 06 = SS Init Data Test -> return error_code \n
* - 13 = Read 1 MS Raw Frame -> return additional data: MS frame row after row
* \n
* - 14 = Read MS Init Data -> return additional data: MS init data row after
* row \n
* - 15 = Read 1 SS Raw Frame -> return additional data: SS frame,
* force channels followed by sense channels \n
* - 16 = Read SS Init Data -> return additional data: SS Init data,
* first IX for force and sense channels and then CX for force and sense
* channels \n
* - F0 = Perform a system reset -> return error_code \n
* - F1 = Perform a system reset and reenable the sensing and the interrupt
*/
static ssize_t stm_fts_cmd_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
u8 result, n = 0;
struct fts_ts_info *info = dev_get_drvdata(dev);
char *p, *temp_buf, *token;
ssize_t buf_len;
ssize_t retval = count;
if (!count) {
pr_err("%s: Invalid input buffer length!\n", __func__);
retval = -EINVAL;
goto out;
}
if (!info) {
pr_err("%s: Unable to access driver data\n", __func__);
retval = -EINVAL;
goto out;
}
if (!mutex_trylock(&info->diag_cmd_lock)) {
pr_err("%s: Blocking concurrent access\n", __func__);
retval = -EBUSY;
goto out;
}
memset(typeOfCommand, 0, sizeof(typeOfCommand));
buf_len = strlen(buf) + 1;
temp_buf = kmalloc(buf_len, GFP_KERNEL);
if (!temp_buf) {
pr_err("%s: memory allocation failed for length(%zu)!",
__func__, buf_len);
retval = -ENOMEM;
goto unlock;
}
strlcpy(temp_buf, buf, buf_len);
p = temp_buf;
/* Parse the input string to retrieve 2 hex-digit width cmds/args
* separated by one or more spaces.
* Any input not equal to 2 hex-digit width are ignored.
* A single 2 hex-digit width command w/ or w/o space is allowed.
* Inputs not in the valid hex range are also ignored.
* In case of encountering any of the above failure, the entire input
* buffer is discarded.
*/
while (p && (n < CMD_STR_LEN)) {
while (isspace(*p)) {
p++;
}
token = strsep(&p, " ");
if (!token || *token == '\0') {
break;
}
if (strlen(token) != 2 ) {
pr_debug("%s: bad len. len=%zu\n",
__func__, strlen(token));
n = 0;
break;
}
if (kstrtou8(token, 16, &result)) {
/* Conversion failed due to bad input.
* Discard the entire buffer.
*/
pr_debug("%s: bad input\n", __func__);
n = 0;
break;
}
/* found a valid cmd/args */
typeOfCommand[n] = result;
pr_debug("%s: typeOfCommand[%d]=%02X\n",
__func__, n, typeOfCommand[n]);
n++;
}
if (n == 0) {
pr_err("%s: Found invalid cmd/arg\n", __func__);
retval = -EINVAL;
}
numberParameters = n;
pr_info("%s: Number of Parameters = %d\n", __func__, numberParameters);
kfree(temp_buf);
unlock:
mutex_unlock(&info->diag_cmd_lock);
out:
return retval;
}
static ssize_t stm_fts_cmd_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int res, j, doClean = 0, index = 0;
int size = (6 * 2) + 1;
int nodes = 0;
int init_type = SPECIAL_PANEL_INIT;
u8 *all_strbuff = buf;
struct fts_ts_info *info = dev_get_drvdata(dev);
MutualSenseData compData;
SelfSenseData comData;
MutualSenseFrame frameMS;
SelfSenseFrame frameSS;
if (!info) {
pr_err("%s: Unable to access driver data\n", __func__);
return -EINVAL;
}
if (!mutex_trylock(&info->diag_cmd_lock)) {
pr_err("%s: Blocking concurrent access\n", __func__);
return -EBUSY;
}
if (fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, true) < 0) {
res = ERROR_BUS_WR;
pr_err("%s: bus is not accessible.\n", __func__);
scnprintf(buf, PAGE_SIZE, "{ %08X }\n", res);
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
mutex_unlock(&info->diag_cmd_lock);
return 0;
}
if (numberParameters >= 1) {
res = fts_disableInterrupt();
if (res < 0) {
pr_err("fts_disableInterrupt: ERROR %08X\n", res);
res = (res | ERROR_DISABLE_INTER);
goto END;
}
switch (typeOfCommand[0]) {
/*ITO TEST*/
case 0x01:
res = production_test_ito(LIMITS_FILE, &tests);
break;
/*PRODUCTION TEST*/
case 0x02:
if (systemInfo.u8_cfgAfeVer != systemInfo.u8_cxAfeVer) {
res = ERROR_OP_NOT_ALLOW;
pr_err("Miss match in CX version! MP test not allowed with wrong CX memory! ERROR %08X\n",
res);
break;
}
res = production_test_initialization(init_type);
break;
case 0x00:
if (systemInfo.u8_cfgAfeVer != systemInfo.u8_cxAfeVer) {
res = ERROR_OP_NOT_ALLOW;
pr_err("Miss match in CX version! MP test not allowed with wrong CX memory! ERROR %08X\n",
res);
break;
}
res = production_test_main(LIMITS_FILE, 1, init_type,
&tests);
break;
/*read mutual raw*/
case 0x13:
if (numberParameters > 1) {
pr_info("Get 1 MS Frame\n");
setScanMode(SCAN_MODE_LOCKED, typeOfCommand[1]);
mdelay(WAIT_FOR_FRESH_FRAMES);
setScanMode(SCAN_MODE_ACTIVE, 0x00);
mdelay(WAIT_AFTER_SENSEOFF);
/* Delete the events related to some touch
* (allow to call this function while touching
* the screen without having a flooding of the
* FIFO)
*/
flushFIFO();
res = getMSFrame3(MS_RAW, &frameMS);
if (res < 0) {
pr_err("Error while taking the MS frame... ERROR %08X\n",
res);
} else {
pr_info("The frame size is %d words\n",
res);
#ifdef RAW_DATA_FORMAT_DEC
size += 3 * 2 +
(7 * frameMS.header.sense_node + 1)
* frameMS.header.force_node;
#else
size += (res * sizeof(short) + 2) * 2;
#endif
/* set res to OK because if getMSFrame
* is successful res = number of words
* read
*/
res = OK;
print_frame_short(
"MS frame =",
array1dTo2d_short(
frameMS.node_data,
frameMS.node_data_size,
frameMS.header.
sense_node),
frameMS.header.force_node,
frameMS.header.sense_node);
}
} else {
pr_err("Wrong number of parameters!\n");
res = ERROR_OP_NOT_ALLOW;
}
break;
/*read self raw*/
case 0x15:
if (numberParameters > 1) {
pr_info("Get 1 SS Frame\n");
setScanMode(SCAN_MODE_LOCKED, typeOfCommand[1]);
mdelay(WAIT_FOR_FRESH_FRAMES);
setScanMode(SCAN_MODE_ACTIVE, 0x00);
mdelay(WAIT_AFTER_SENSEOFF);
flushFIFO();
/* delete the events related to some touch
* (allow to call this function while touching
* the screen without having a flooding of the
* FIFO) */
res = getSSFrame3(SS_RAW, &frameSS);
if (res < OK) {
pr_err("Error while taking the SS frame... ERROR %08X\n",
res);
} else {
pr_info("The frame size is %d words\n",
res);
#ifdef RAW_DATA_FORMAT_DEC
size += 3 * 2 + 5 +
(frameSS.header.sense_node +
frameSS.header.force_node) * 7;
#else
size += (res * sizeof(short) + 2) * 2;
#endif
/* set res to OK because if getMSFrame
* is successful res = number of words
* read
*/
res = OK;
print_frame_short(
"SS force frame =",
array1dTo2d_short(
frameSS.force_data,
frameSS.header.
force_node, 1),
frameSS.header.force_node, 1);
print_frame_short(
"SS sense frame =",
array1dTo2d_short(
frameSS.sense_data,
frameSS.header.
sense_node,
frameSS.header.
sense_node),
1, frameSS.header.sense_node);
}
} else {
pr_err("Wrong number of parameters!\n");
res = ERROR_OP_NOT_ALLOW;
}
break;
case 0x14: /* read mutual comp data */
pr_info("Get MS Compensation Data\n");
res = readMutualSenseCompensationData(LOAD_CX_MS_TOUCH,
&compData);
if (res < 0)
pr_err("Error reading MS compensation data ERROR %08X\n",
res);
else {
pr_info("MS Compensation Data Reading Finished!\n");
size += ((compData.node_data_size + 3) *
sizeof(u8)) * 2;
print_frame_i8("MS Data (Cx2) =",
array1dTo2d_i8(
compData.node_data,
compData.
node_data_size,
compData.header.
sense_node),
compData.header.force_node,
compData.header.sense_node);
}
break;
case 0x16: /* read self comp data */
pr_info("Get SS Compensation Data...\n");
res = readSelfSenseCompensationData(LOAD_CX_SS_TOUCH,
&comData);
if (res < 0)
pr_err("Error reading SS compensation data ERROR %08X\n",
res);
else {
pr_info("SS Compensation Data Reading Finished!\n");
size += ((comData.header.force_node +
comData.header.sense_node) * 2 + 6) *
sizeof(u8) * 2;
print_frame_u8("SS Data Ix2_fm = ",
array1dTo2d_u8(comData.ix2_fm,
comData.header.
force_node, 1),
comData.header.force_node, 1);
print_frame_i8("SS Data Cx2_fm = ",
array1dTo2d_i8(comData.cx2_fm,
comData.header.
force_node, 1),
comData.header.force_node, 1);
print_frame_u8("SS Data Ix2_sn = ",
array1dTo2d_u8(comData.ix2_sn,
comData.header.
sense_node,
comData.header.
sense_node), 1,
comData.header.sense_node);
print_frame_i8("SS Data Cx2_sn = ",
array1dTo2d_i8(comData.cx2_sn,
comData.header.
sense_node,
comData.header.
sense_node), 1,
comData.header.sense_node);
}
break;
case 0x17: /* Read mutual strength */
pr_info("Get 1 MS Strength\n");
setScanMode(SCAN_MODE_ACTIVE, 0xFF);
msleep(WAIT_FOR_FRESH_FRAMES);
setScanMode(SCAN_MODE_ACTIVE, 0x00);
msleep(WAIT_AFTER_SENSEOFF);
/* Flush outstanding touch events */
flushFIFO();
nodes = getMSFrame3(MS_STRENGTH, &frameMS);
if (nodes < 0) {
res = nodes;
pr_err("Error while taking the MS strength... ERROR %08X\n",
res);
} else {
pr_info("The frame size is %d words\n", nodes);
#ifdef RAW_DATA_FORMAT_DEC
size += 3 * 2 +
(7 * frameMS.header.sense_node + 1)
* frameMS.header.force_node;
#else
size += (nodes * sizeof(short) + 2) * 2;
#endif
print_frame_short("MS strength =",
array1dTo2d_short(frameMS.node_data,
frameMS.node_data_size,
frameMS.header.sense_node),
frameMS.header.force_node,
frameMS.header.sense_node);
res = OK;
}
break;
case 0x03: /* MS Raw DATA TEST */
res = fts_system_reset();
if (res >= OK)
res = production_test_ms_raw(LIMITS_FILE, 1,
&tests);
break;
case 0x04: /* MS CX DATA TEST */
res = fts_system_reset();
if (res >= OK)
res = production_test_ms_cx(LIMITS_FILE, 1,
&tests);
break;
case 0x05: /* SS RAW DATA TEST */
res = fts_system_reset();
if (res >= OK)
res = production_test_ss_raw(LIMITS_FILE, 1,
&tests);
break;
case 0x06: /* SS IX CX DATA TEST */
res = fts_system_reset();
if (res >= OK)
res = production_test_ss_ix_cx(LIMITS_FILE, 1,
&tests);
break;
case 0xF0:
case 0xF1: /* TOUCH ENABLE/DISABLE */
doClean = (int)(typeOfCommand[0] & 0x01);
res = cleanUp(doClean);
break;
default:
pr_err("CMD(%02X) NOT VALID!! Insert a proper value\n",
typeOfCommand[0]);
res = ERROR_OP_NOT_ALLOW;
break;
}
doClean = fts_mode_handler(info, 1);
if (typeOfCommand[0] != 0xF0)
doClean |= fts_enableInterrupt();
if (doClean < 0)
pr_err("%s: ERROR %08X\n", __func__,
(doClean | ERROR_ENABLE_INTER));
} else {
pr_err("NO COMMAND SPECIFIED!!! do: 'echo [cmd_code] [args] > stm_fts_cmd' before looking for result!\n");
res = ERROR_OP_NOT_ALLOW;
}
END:
/* here start the reporting phase, assembling the data
* to send in the file node */
size = PAGE_SIZE;
index = 0;
index += scnprintf(all_strbuff + index, size - index, "{ %08X", res);
if (res >= OK) {
/*all the other cases are already fine printing only the res.*/
switch (typeOfCommand[0]) {
case 0x13:
case 0x17:
#ifdef RAW_DATA_FORMAT_DEC
index += scnprintf(all_strbuff + index, size - index,
"%3d",
(u8)frameMS.header.force_node);
index += scnprintf(all_strbuff + index, size - index,
"%3d",
(u8)frameMS.header.sense_node);
#else
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(u8)frameMS.header.force_node);
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(u8)frameMS.header.sense_node);
#endif
for (j = 0; j < frameMS.node_data_size; j++) {
#ifdef RAW_DATA_FORMAT_DEC
if (j % frameMS.header.sense_node == 0)
index += scnprintf(all_strbuff + index,
size - index, "\n");
index += scnprintf(all_strbuff + index,
size - index, "%7d",
frameMS.node_data[j]);
#else
index += scnprintf(all_strbuff + index,
size - index,
"%02X%02X",
(frameMS.node_data[j] & 0xFF00) >> 8,
frameMS.node_data[j] & 0xFF);
#endif
}
kfree(frameMS.node_data);
break;
case 0x15:
#ifdef RAW_DATA_FORMAT_DEC
index += scnprintf(all_strbuff + index, size - index,
"%3d",
(u8)frameSS.header.force_node);
index += scnprintf(all_strbuff + index, size - index,
"%3d",
(u8)frameSS.header.sense_node);
index += scnprintf(all_strbuff + index, size - index,
"\n");
#else
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(u8)frameSS.header.force_node);
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(u8)frameSS.header.sense_node);
#endif
/* Copying self raw data Force */
for (j = 0; j < frameSS.header.force_node; j++) {
#ifdef RAW_DATA_FORMAT_DEC
index += scnprintf(all_strbuff + index,
size - index,
"%7d",
frameSS.force_data[j]);
#else
index += scnprintf(all_strbuff + index,
size - index,
"%02X%02X",
(frameSS.force_data[j] & 0xFF00) >> 8,
frameSS.force_data[j] & 0xFF);
#endif
}
#ifdef RAW_DATA_FORMAT_DEC
index += scnprintf(all_strbuff + index, size - index,
"\n");
#endif
/* Copying self raw data Sense */
for (j = 0; j < frameSS.header.sense_node; j++) {
#ifdef RAW_DATA_FORMAT_DEC
index += scnprintf(all_strbuff + index,
size - index, "%7d",
frameSS.sense_data[j]);
#else
index += scnprintf(all_strbuff + index,
size - index,
"%02X%02X",
(frameSS.sense_data[j] & 0xFF00) >> 8,
frameSS.sense_data[j] & 0xFF);
#endif
}
kfree(frameSS.force_data);
kfree(frameSS.sense_data);
break;
case 0x14:
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(u8)compData.header.force_node);
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(u8)compData.header.sense_node);
/* Cpying CX1 value */
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(compData.cx1) & 0xFF);
/* Copying CX2 values */
for (j = 0; j < compData.node_data_size; j++) {
index += scnprintf(all_strbuff + index,
size - index,
"%02X",
(compData.node_data[j]) & 0xFF);
}
kfree(compData.node_data);
break;
case 0x16:
index += scnprintf(all_strbuff + index,
size - index, "%02X",
comData.header.force_node);
index += scnprintf(all_strbuff + index,
size - index, "%02X",
comData.header.sense_node);
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(comData.f_ix1) & 0xFF);
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(comData.s_ix1) & 0xFF);
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(comData.f_cx1) & 0xFF);
index += scnprintf(all_strbuff + index,
size - index, "%02X",
(comData.s_cx1) & 0xFF);
/* Copying IX2 Force */
for (j = 0; j < comData.header.force_node; j++) {
index += scnprintf(all_strbuff + index,
size - index,
"%02X",
comData.ix2_fm[j] & 0xFF);
}
/* Copying IX2 Sense */
for (j = 0; j < comData.header.sense_node; j++) {
index += scnprintf(all_strbuff + index,
size - index,
"%02X",
comData.ix2_sn[j] & 0xFF);
}
/* Copying CX2 Force */
for (j = 0; j < comData.header.force_node; j++) {
index += scnprintf(all_strbuff + index,
size - index,
"%02X",
comData.cx2_fm[j] & 0xFF);
}
/* Copying CX2 Sense */
for (j = 0; j < comData.header.sense_node; j++) {
index += scnprintf(all_strbuff + index,
size - index,
"%02X",
comData.cx2_sn[j] & 0xFF);
}
kfree(comData.ix2_fm);
kfree(comData.ix2_sn);
kfree(comData.cx2_fm);
kfree(comData.cx2_sn);
break;
default:
break;
}
}
index += scnprintf(all_strbuff + index, size - index, " }\n");
numberParameters = 0;
/* need to reset the number of parameters in order to wait the
* next command, comment if you want to repeat the last command sent
* just doing a cat */
/* pr_err("numberParameters = %d\n", numberParameters); */
fts_set_bus_ref(info, FTS_BUS_REF_SYSFS, false);
mutex_unlock(&info->diag_cmd_lock);
return index;
}
static DEVICE_ATTR(fwupdate, 0664, fts_fwupdate_show,
fts_fwupdate_store);
static DEVICE_ATTR(appid, 0444, fts_appid_show, NULL);
static DEVICE_ATTR(mode_active, 0444, fts_mode_active_show, NULL);
static DEVICE_ATTR(fw_file_test, 0444, fts_fw_test_show, NULL);
static DEVICE_ATTR(status, 0444, fts_status_show, NULL);
static DEVICE_ATTR(stm_fts_cmd, 0664, stm_fts_cmd_show,
stm_fts_cmd_store);
#ifdef USE_ONE_FILE_NODE
static DEVICE_ATTR(feature_enable, 0664,
fts_feature_enable_show, fts_feature_enable_store);
#else
#ifdef GRIP_MODE
static DEVICE_ATTR(grip_mode, 0664, fts_grip_mode_show,
fts_grip_mode_store);
#endif
#ifdef CHARGER_MODE
static DEVICE_ATTR(charger_mode, 0664,
fts_charger_mode_show, fts_charger_mode_store);
#endif
#ifdef GLOVE_MODE
static DEVICE_ATTR(glove_mode, 0664,
fts_glove_mode_show, fts_glove_mode_store);
#endif
#ifdef COVER_MODE
static DEVICE_ATTR(cover_mode, 0664,
fts_cover_mode_show, fts_cover_mode_store);
#endif
#ifdef STYLUS_MODE
static DEVICE_ATTR(stylus_mode, 0664,
fts_stylus_mode_show, fts_stylus_mode_store);
#endif
#endif
#ifdef GESTURE_MODE
static DEVICE_ATTR(gesture_mask, 0664,
fts_gesture_mask_show, fts_gesture_mask_store);
static DEVICE_ATTR(gesture_coordinates, 0664,
fts_gesture_coordinates_show, NULL);
#endif
static DEVICE_ATTR(touchsim, 0664,
fts_touch_simulation_show,
fts_touch_simulation_store);
/* /sys/devices/soc.0/f9928000.i2c/i2c-6/6-0049 */
static struct attribute *fts_attr_group[] = {
&dev_attr_fwupdate.attr,
&dev_attr_appid.attr,
&dev_attr_mode_active.attr,
&dev_attr_fw_file_test.attr,
&dev_attr_status.attr,
&dev_attr_stm_fts_cmd.attr,
#ifdef USE_ONE_FILE_NODE
&dev_attr_feature_enable.attr,
#else
#ifdef GRIP_MODE
&dev_attr_grip_mode.attr,
#endif
#ifdef CHARGER_MODE
&dev_attr_charger_mode.attr,
#endif
#ifdef GLOVE_MODE
&dev_attr_glove_mode.attr,
#endif
#ifdef COVER_MODE
&dev_attr_cover_mode.attr,
#endif
#ifdef STYLUS_MODE
&dev_attr_stylus_mode.attr,
#endif
#endif
#ifdef GESTURE_MODE
&dev_attr_gesture_mask.attr,
&dev_attr_gesture_coordinates.attr,
#endif
&dev_attr_touchsim.attr,
NULL,
};
/** @}*/
/** @}*/
/**
* @defgroup isr Interrupt Service Routine (Event Handler)
* The most important part of the driver is the ISR (Interrupt Service Routine)
* called also as Event Handler \n
* As soon as the interrupt pin goes low, fts_interrupt_handler() is called and
* the chain to read and parse the event read from the FIFO start.\n
* For any different kind of EVT_ID there is a specific event handler
* which will take the correct action to report the proper info to the host. \n
* The most important events are the one related to touch information, status
* update or user report.
* @{
*/
/**
* Report to the linux input system the pressure and release of a button
* handling concurrency
* @param info pointer to fts_ts_info which contains info about the device
* and its hw setup
* @param key_code button value
*/
void fts_input_report_key(struct fts_ts_info *info, int key_code)
{
mutex_lock(&info->input_report_mutex);
input_report_key(info->input_dev, key_code, 1);
input_sync(info->input_dev);
input_report_key(info->input_dev, key_code, 0);
input_sync(info->input_dev);
mutex_unlock(&info->input_report_mutex);
}
/**
* Event Handler for no events (EVT_ID_NOEVENT)
*/
static bool fts_nop_event_handler(struct fts_ts_info *info, unsigned
char *event)
{
pr_info("%s: Doing nothing for event = %02X %02X %02X %02X %02X %02X %02X %02X\n",
__func__, event[0], event[1], event[2], event[3],
event[4],
event[5], event[6], event[7]);
return false;
}
/**
* Event handler for enter and motion events (EVT_ID_ENTER_POINT,
* EVT_ID_MOTION_POINT )
* report touch coordinates and additional information
* to the linux input system
*/
static bool fts_enter_pointer_event_handler(struct fts_ts_info *info, unsigned
char *event)
{
unsigned char touchId;
unsigned int touch_condition = 1, tool = MT_TOOL_FINGER;
int x, y, z, major, minor, distance;
u8 touchType;
if (!info->resume_bit)
goto no_report;
touchType = event[1] & 0x0F;
touchId = (event[1] & 0xF0) >> 4;
x = (((int)event[3] & 0x0F) << 8) | (event[2]);
y = ((int)event[4] << 4) | ((event[3] & 0xF0) >> 4);
z = (int)event[5];
if (z <= 0) {
/* Should not happen, because zero pressure implies contact has
* left, so this function should not be invoked. For safety, to
* prevent this touch from being dropped, set to smallest
* pressure value instead
*/
pr_err("%s: Pressure is %i, but pointer is not leaving\n",
__func__, z);
z = 1; /* smallest non-zero pressure value */
}
major = (int)(((event[0] & 0x0C) << 2) | ((event[6] & 0xF0) >> 4));
minor = (int)(((event[7] & 0xC0) >> 2) | (event[6] & 0x0F));
/* TODO: check with fw how they will report distance */
distance = 0; /* if the tool is touching the display
* the distance should be 0 */
if (x == info->board->x_axis_max)
x--;
if (y == info->board->y_axis_max)
y--;
input_mt_slot(info->input_dev, touchId);
switch (touchType) {
#ifdef STYLUS_MODE
case TOUCH_TYPE_STYLUS:
pr_info("%s : It is a stylus!\n", __func__);
if (info->stylus_enabled == 1) {
/* if stylus_enabled is not ==1
* it will be reported as normal touch */
tool = MT_TOOL_PEN;
touch_condition = 1;
__set_bit(touchId, &info->stylus_id);
break;
}
#endif
/* TODO: customer can implement a different strategy for each kind of
* touch */
case TOUCH_TYPE_FINGER:
case TOUCH_TYPE_GLOVE:
case TOUCH_TYPE_PALM:
pr_debug("%s : It is a touch type %d!\n", __func__, touchType);
tool = MT_TOOL_FINGER;
touch_condition = 1;
__set_bit(touchId, &info->touch_id);
break;
case TOUCH_TYPE_HOVER:
tool = MT_TOOL_FINGER;
touch_condition = 0; /* need to hover */
z = 0; /* no pressure */
__set_bit(touchId, &info->touch_id);
distance = DISTANCE_MAX;/* check with fw report the hovering
* distance */
break;
case TOUCH_TYPE_INVALID:
default:
pr_err("%s : Invalid touch type = %d ! No Report...\n",
__func__, touchType);
goto no_report;
}
input_report_key(info->input_dev, BTN_TOUCH, touch_condition);
input_mt_report_slot_state(info->input_dev, tool, 1);
/* pr_info("%s : TouchID = %d,Touchcount = %d\n", __func__,
* touchId,touchcount); */
input_report_abs(info->input_dev, ABS_MT_POSITION_X, x);
input_report_abs(info->input_dev, ABS_MT_POSITION_Y, y);
input_report_abs(info->input_dev, ABS_MT_TOUCH_MAJOR, major);
input_report_abs(info->input_dev, ABS_MT_TOUCH_MINOR, minor);
input_report_abs(info->input_dev, ABS_MT_PRESSURE, z);
#ifndef SKIP_DISTANCE
input_report_abs(info->input_dev, ABS_MT_DISTANCE, distance);
#endif
/* pr_info("%s : Event 0x%02x - ID[%d], (x, y) = (%3d, %3d)
* Size = %d\n",
* __func__, *event, touchId, x, y, touchType); */
return true;
no_report:
return false;
}
/**
* Event handler for leave event (EVT_ID_LEAVE_POINT )
* Report to the linux input system that one touch left the display
*/
static bool fts_leave_pointer_event_handler(struct fts_ts_info *info, unsigned
char *event)
{
unsigned char touchId;
unsigned int tool = MT_TOOL_FINGER;
u8 touchType;
touchType = event[1] & 0x0F;
touchId = (event[1] & 0xF0) >> 4;
input_mt_slot(info->input_dev, touchId);
input_report_abs(info->input_dev, ABS_MT_PRESSURE, 0);
switch (touchType) {
#ifdef STYLUS_MODE
case TOUCH_TYPE_STYLUS:
pr_info("%s : It is a stylus!\n", __func__);
if (info->stylus_enabled == 1) {
/* if stylus_enabled is not ==1 it will be reported as
* normal touch */
tool = MT_TOOL_PEN;
__clear_bit(touchId, &info->stylus_id);
break;
}
#endif
case TOUCH_TYPE_FINGER:
/* pr_info("%s : It is a finger!\n", __func__); */
case TOUCH_TYPE_GLOVE:
/* pr_info("%s : It is a glove!\n", __func__); */
case TOUCH_TYPE_PALM:
/* pr_info("%s : It is a palm!\n", __func__); */
case TOUCH_TYPE_HOVER:
tool = MT_TOOL_FINGER;
__clear_bit(touchId, &info->touch_id);
break;
case TOUCH_TYPE_INVALID:
default:
pr_err("%s : Invalid touch type = %d ! No Report...\n",
__func__, touchType);
return false;
}
input_mt_report_slot_state(info->input_dev, tool, 0);
/* pr_info("%s : TouchID = %d, Touchcount = %d\n", __func__,
* touchId,touchcount); */
input_report_abs(info->input_dev, ABS_MT_TRACKING_ID, -1);
/* pr_info("%s : Event 0x%02x - release ID[%d]\n", __func__,
* event[0], touchId); */
return true;
}
/* EventId : EVT_ID_MOTION_POINT */
#define fts_motion_pointer_event_handler fts_enter_pointer_event_handler
/* remap the motion event handler to the same function which handle the enter
* event */
/**
* Event handler for error events (EVT_ID_ERROR)
* Handle unexpected error events implementing recovery strategy and
* restoring the sensing status that the IC had before the error occurred
*/
static bool fts_error_event_handler(struct fts_ts_info *info, unsigned
char *event)
{
int error = 0;
pr_info("%s: Received event %02X %02X %02X %02X %02X %02X %02X %02X\n",
__func__, event[0], event[1], event[2], event[3], event[4],
event[5],
event[6], event[7]);
switch (event[1]) {
case EVT_TYPE_ERROR_ESD:/* esd */
{/* before reset clear all slot */
release_all_touches(info);
fts_chip_powercycle(info);
error = fts_system_reset();
error |= fts_mode_handler(info, 0);
error |= fts_enableInterrupt();
if (error < OK)
pr_err("%s Cannot restore the device ERROR %08X\n",
__func__, error);
}
break;
case EVT_TYPE_ERROR_WATCHDOG: /* watch dog timer */
{
dumpErrorInfo(NULL, 0);
/* before reset clear all slots */
release_all_touches(info);
error = fts_system_reset();
error |= fts_mode_handler(info, 0);
error |= fts_enableInterrupt();
if (error < OK)
pr_err("%s Cannot reset the device ERROR %08X\n",
__func__, error);
}
break;
}
return false;
}
/**
* Event handler for controller ready event (EVT_ID_CONTROLLER_READY)
* Handle controller events received after unexpected reset of the IC updating
* the resets flag and restoring the proper sensing status
*/
static bool fts_controller_ready_event_handler(struct fts_ts_info *info,
unsigned char *event)
{
int error;
pr_info("%s: Received event %02X %02X %02X %02X %02X %02X %02X %02X\n",
__func__, event[0], event[1], event[2], event[3], event[4],
event[5], event[6], event[7]);
release_all_touches(info);
setSystemResetedUp(1);
setSystemResetedDown(1);
error = fts_mode_handler(info, 0);
if (error < OK)
pr_err("%s Cannot restore the device status ERROR %08X\n",
__func__, error);
return false;
}
/**
* Event handler for status events (EVT_ID_STATUS_UPDATE)
* Handle status update events
*/
static bool fts_status_event_handler(struct fts_ts_info *info, unsigned
char *event)
{
switch (event[1]) {
case EVT_TYPE_STATUS_ECHO:
pr_debug("%s: Echo event of command = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4], event[5],
event[6], event[7]);
break;
case EVT_TYPE_STATUS_FORCE_CAL:
switch (event[2]) {
case 0x00:
pr_info("%s: Continuous frame drop Force cal = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x01:
pr_info("%s: Mutual negative detect Force cal = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x02:
pr_info("%s: Mutual calib deviation Force cal = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x11:
pr_info("%s: SS negative detect Force cal = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x12:
pr_info("%s: SS negative detect Force cal in Low Power mode = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x13:
pr_info("%s: SS negative detect Force cal in Idle mode = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x20:
pr_info("%s: SS invalid Mutual Strength soft Force cal = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x21:
pr_info("%s: SS invalid Self Strength soft Force cal = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x22:
pr_info("%s: SS invalid Self Island soft Force cal = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x30:
pr_info("%s: MS invalid Mutual Strength soft Force cal = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x31:
pr_info("%s: MS invalid Self Strength soft Force cal = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
default:
pr_info("%s: Force cal = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
}
break;
case EVT_TYPE_STATUS_FRAME_DROP:
switch (event[2]) {
case 0x01:
pr_info("%s: Frame drop noisy frame = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x02:
pr_info("%s: Frame drop bad R = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case 0x03:
pr_info("%s: Frame drop invalid processing state = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
default:
pr_info("%s: Frame drop = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
}
break;
case EVT_TYPE_STATUS_SS_RAW_SAT:
if (event[2] == 1)
pr_info("%s: SS Raw Saturated = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
else
pr_info("%s: SS Raw No more Saturated = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
case EVT_TYPE_STATUS_WATER:
if (event[2] == 1)
pr_info("%s: Enter Water mode = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
else
pr_info("%s: Exit Water mode = %02X %02X %02X %02X %02X %02X\n",
__func__, event[2], event[3], event[4],
event[5], event[6], event[7]);
break;
default:
pr_err("%s: Received unhandled status event = %02X %02X %02X %02X %02X %02X %02X %02X\n",
__func__, event[0], event[1], event[2], event[3],
event[4], event[5], event[6], event[7]);
break;
}
return false;
}
/* key events reported in the user report */
#ifdef PHONE_KEY
/* TODO: the customer should handle the events coming from the keys according
* his needs
* (this is just an sample code that report the click of a button after a
* press->release action) */
/**
* Event handler for status events (EVT_TYPE_USER_KEY)
* Handle keys update events, the third byte of the event is a bitmask,
* if the bit set means that the corresponding key is pressed.
*/
static void fts_key_event_handler(struct fts_ts_info *info,
unsigned char *event)
{
/* int value; */
pr_info("%s: Received event %02X %02X %02X %02X %02X %02X %02X %02X\n",
__func__, event[0], event[1], event[2], event[3], event[4],
event[5], event[6], event[7]);
if (event[0] == EVT_ID_USER_REPORT && event[1] == EVT_TYPE_USER_KEY) {
/* event[2] contain the bitmask of the keys that are actually
* pressed */
if ((event[2] & FTS_KEY_0) == 0 && (key_mask & FTS_KEY_0) > 0) {
pr_info("%s: Button HOME pressed and released!\n",
__func__);
fts_input_report_key(info, KEY_HOMEPAGE);
}
if ((event[2] & FTS_KEY_1) == 0 && (key_mask & FTS_KEY_1) > 0) {
pr_info("%s: Button Back pressed and released!\n",
__func__);
fts_input_report_key(info, KEY_BACK);
}
if ((event[2] & FTS_KEY_2) == 0 && (key_mask & FTS_KEY_2) > 0) {
pr_info("%s: Button Menu pressed!\n", __func__);
fts_input_report_key(info, KEY_MENU);
}
key_mask = event[2];
} else
pr_err("%s: Invalid event passed as argument!\n", __func__);
}
#endif
/* gesture event must be handled in the user event handler */
#ifdef GESTURE_MODE
/* TODO: Customer should implement their own actions in respond of a gesture
* event.
* This is an example that simply print the gesture received and simulate
* the click on a different button for each gesture. */
/**
* Event handler for gesture events (EVT_TYPE_USER_GESTURE)
* Handle gesture events and simulate the click on a different button
* for any gesture detected (@link gesture_opt Gesture IDs @endlink)
*/
static void fts_gesture_event_handler(struct fts_ts_info *info, unsigned
char *event)
{
int value;
int needCoords = 0;
pr_info("gesture event data: %02X %02X %02X %02X %02X %02X %02X %02X\n",
event[0], event[1], event[2], event[3], event[4],
event[5], event[6], event[7]);
if (event[0] == EVT_ID_USER_REPORT && event[1] ==
EVT_TYPE_USER_GESTURE) {
needCoords = 1;
/* default read the coordinates for all gestures excluding
* double tap */
switch (event[2]) {
case GEST_ID_DBLTAP:
value = KEY_WAKEUP;
pr_info("%s: double tap !\n", __func__);
needCoords = 0;
break;
case GEST_ID_AT:
value = KEY_WWW;
pr_info("%s: @ !\n", __func__);
break;
case GEST_ID_C:
value = KEY_C;
pr_info("%s: C !\n", __func__);
break;
case GEST_ID_E:
value = KEY_E;
pr_info("%s: e !\n", __func__);
break;
case GEST_ID_F:
value = KEY_F;
pr_info("%s: F !\n", __func__);
break;
case GEST_ID_L:
value = KEY_L;
pr_info("%s: L !\n", __func__);
break;
case GEST_ID_M:
value = KEY_M;
pr_info("%s: M !\n", __func__);
break;
case GEST_ID_O:
value = KEY_O;
pr_info("%s: O !\n", __func__);
break;
case GEST_ID_S:
value = KEY_S;
pr_info("%s: S !\n", __func__);
break;
case GEST_ID_V:
value = KEY_V;
pr_info("%s: V !\n", __func__);
break;
case GEST_ID_W:
value = KEY_W;
pr_info("%s: W !\n", __func__);
break;
case GEST_ID_Z:
value = KEY_Z;
pr_info("%s: Z !\n", __func__);
break;
case GEST_ID_RIGHT_1F:
value = KEY_RIGHT;
pr_info("%s: -> !\n", __func__);
break;
case GEST_ID_LEFT_1F:
value = KEY_LEFT;
pr_info("%s: <- !\n", __func__);
break;
case GEST_ID_UP_1F:
value = KEY_UP;
pr_info("%s: UP !\n", __func__);
break;
case GEST_ID_DOWN_1F:
value = KEY_DOWN;
pr_info("%s: DOWN !\n", __func__);
break;
case GEST_ID_CARET:
value = KEY_APOSTROPHE;
pr_info("%s: ^ !\n", __func__);
break;
case GEST_ID_LEFTBRACE:
value = KEY_LEFTBRACE;
pr_info("%s: < !\n", __func__);
break;
case GEST_ID_RIGHTBRACE:
value = KEY_RIGHTBRACE;
pr_info("%s: > !\n", __func__);
break;
default:
pr_err("%s: No valid GestureID!\n", __func__);
goto gesture_done;
}
if (needCoords == 1)
readGestureCoords(event);
fts_input_report_key(info, value);
gesture_done:
return;
} else
pr_err("%s: Invalid event passed as argument!\n", __func__);
}
#endif
/**
* Event handler for user report events (EVT_ID_USER_REPORT)
* Handle user events reported by the FW due to some interaction triggered
* by an external user (press keys, perform gestures, etc.)
*/
static bool fts_user_report_event_handler(struct fts_ts_info *info, unsigned
char *event)
{
switch (event[1]) {
#ifdef PHONE_KEY
case EVT_TYPE_USER_KEY:
fts_key_event_handler(info, event);
break;
#endif
case EVT_TYPE_USER_PROXIMITY:
if (event[2] == 0)
pr_err("%s No proximity!\n", __func__);
else
pr_err("%s Proximity Detected!\n", __func__);
break;
#ifdef GESTURE_MODE
case EVT_TYPE_USER_GESTURE:
fts_gesture_event_handler(info, event);
break;
#endif
default:
pr_err("%s: Received unhandled user report event = %02X %02X %02X %02X %02X %02X %02X %02X\n",
__func__, event[0], event[1], event[2], event[3],
event[4], event[5], event[6], event[7]);
break;
}
return false;
}
static void heatmap_enable(void)
{
unsigned char command[] = {0xA4, 0x06, LOCAL_HEATMAP_MODE};
fts_write(command, 3);
}
static bool read_heatmap_raw(struct v4l2_heatmap *v4l2, strength_t *data)
{
unsigned char heatmap_read_command[] = {0xA6, 0x00, 0x00};
unsigned int num_elements;
/* index for looping through the heatmap buffer read over the bus */
unsigned int local_i;
int result;
/* old value of the counter, for comparison */
static uint16_t counter;
strength_t heatmap_value;
/* final position of the heatmap value in the full heatmap frame */
unsigned int frame_i;
int heatmap_x, heatmap_y;
int max_x = v4l2->format.width;
int max_y = v4l2->format.height;
struct heatmap_report report = {0};
result = fts_writeRead(heatmap_read_command, 3,
(uint8_t *) &report, sizeof(report));
if (result != OK) {
pr_err("%s: i2c read failed, fts_writeRead returned %i",
__func__, result);
return false;
}
if (report.mode != LOCAL_HEATMAP_MODE) {
pr_err("Touch IC not in local heatmap mode: %X %X %i",
report.prefix, report.mode, report.counter);
return false;
}
le16_to_cpus(&report.counter); /* enforce little-endian order */
if (report.counter == counter && counter != 0) {
/*
* We shouldn't make ordered comparisons because of
* potential overflow, but at least the value
* should have changed. If the value remains the same,
* but we are processing a new interrupt,
* this could indicate slowness in the interrupt handler.
*/
pr_warn("Heatmap frame has stale counter value %i",
counter);
}
counter = report.counter;
num_elements = report.size_x * report.size_y;
if (num_elements > LOCAL_HEATMAP_WIDTH * LOCAL_HEATMAP_HEIGHT) {
pr_err("Unexpected heatmap size: %i x %i",
report.size_x, report.size_y);
return false;
}
/* set all to zero, will only write to non-zero locations in the loop */
memset(data, 0, max_x * max_y * sizeof(data[0]));
/* populate the data buffer, rearranging into final locations */
for (local_i = 0; local_i < num_elements; local_i++) {
/* enforce little-endian order */
le16_to_cpus(&report.data[local_i]);
heatmap_value = report.data[local_i];
if (heatmap_value == 0) {
/* Already set to zero. Nothing to do */
continue;
}
heatmap_x = report.offset_x + (local_i % report.size_x);
heatmap_y = report.offset_y + (local_i / report.size_x);
if (heatmap_x < 0 || heatmap_x >= max_x ||
heatmap_y < 0 || heatmap_y >= max_y) {
pr_err("Invalid x or y: (%i, %i), value=%i, ending loop\n",
heatmap_x, heatmap_y, heatmap_value);
return false;
}
frame_i = heatmap_y * max_x + heatmap_x;
data[frame_i] = heatmap_value;
}
return true;
}
/**
* Bottom Half Interrupt Handler function
* This handler is called each time there is at least one new event in the FIFO
* and the interrupt pin of the IC goes low. It will read all the events from
* the FIFO and dispatch them to the proper event handler according the event
* ID
*/
static irqreturn_t fts_interrupt_handler(int irq, void *handle)
{
struct fts_ts_info *info = handle;
int error = 0, count = 0;
unsigned char regAdd = FIFO_CMD_READALL;
unsigned char data[FIFO_EVENT_SIZE * FIFO_DEPTH];
unsigned char eventId;
const unsigned char EVENTS_REMAINING_POS = 7;
const unsigned char EVENTS_REMAINING_MASK = 0x1F;
unsigned char events_remaining = 0;
unsigned char *evt_data;
/* It is possible that interrupts were disabled while the handler is
* executing, before acquiring the mutex. If so, simply return.
*/
if (fts_set_bus_ref(info, FTS_BUS_REF_IRQ, true) < 0) {
fts_set_bus_ref(info, FTS_BUS_REF_IRQ, false);
return IRQ_HANDLED;
}
/* prevent CPU from entering deep sleep */
pm_qos_update_request(&info->pm_qos_req, 100);
__pm_wakeup_event(&info->wakesrc, jiffies_to_msecs(HZ));
/* Read the first FIFO event and the number of events remaining */
error = fts_writeReadU8UX(regAdd, 0, 0, data, FIFO_EVENT_SIZE,
DUMMY_FIFO);
events_remaining = data[EVENTS_REMAINING_POS] & EVENTS_REMAINING_MASK;
events_remaining = (events_remaining > FIFO_DEPTH - 1) ?
FIFO_DEPTH - 1 : events_remaining;
/* Drain the rest of the FIFO, up to 31 events */
if (error == OK && events_remaining > 0) {
error = fts_writeReadU8UX(regAdd, 0, 0, &data[FIFO_EVENT_SIZE],
FIFO_EVENT_SIZE * events_remaining,
DUMMY_FIFO);
}
if (error != OK) {
pr_err("Error (%08X) while reading from FIFO in fts_event_handler\n",
error);
} else {
for (count = 0; count < events_remaining + 1; count++) {
evt_data = &data[count * FIFO_EVENT_SIZE];
if (evt_data[0] == EVT_ID_NOEVENT)
break;
eventId = evt_data[0] >> 4;
/* Ensure event ID is within bounds */
if (eventId < NUM_EVT_ID)
info->event_dispatch_table[eventId](info,
evt_data);
}
}
if (info->touch_id == 0)
input_report_key(info->input_dev, BTN_TOUCH, 0);
input_sync(info->input_dev);
heatmap_read(&info->v4l2, info->timestamp);
pm_qos_update_request(&info->pm_qos_req, PM_QOS_DEFAULT_VALUE);
fts_set_bus_ref(info, FTS_BUS_REF_IRQ, false);
return IRQ_HANDLED;
}
/** @}*/
/**
* Implement the fw update and initialization flow of the IC that should
* be executed at every boot up. The function perform a fw update of the
* IC in case of crc error or a new fw version and then understand if the
* IC need to be re-initialized again.
*
* @return OK if success or an error code which specify the type of error
* encountered
*/
static int fts_fw_update(struct fts_ts_info *info)
{
u8 error_to_search[4] = { EVT_TYPE_ERROR_CRC_CX_HEAD,
EVT_TYPE_ERROR_CRC_CX,
EVT_TYPE_ERROR_CRC_CX_SUB_HEAD,
EVT_TYPE_ERROR_CRC_CX_SUB };
int ret = 0;
int init_type = NO_INIT;
#ifdef PRE_SAVED_METHOD
int keep_cx = 1;
#else
int keep_cx = 0;
#endif
pr_info("Fw Auto Update is starting...\n");
/* Check CRC status */
ret = fts_crc_check();
if (ret > OK) {
pr_err("%s: CRC Error or NO FW!\n", __func__);
info->reflash_fw = 1;
} else {
pr_info("%s: NO CRC Error or Impossible to read CRC register!\n",
__func__);
}
ret = flashProcedure(info->board->fw_name, info->reflash_fw, keep_cx);
if ((ret & 0xF000000F) == ERROR_FILE_NOT_FOUND) {
pr_err("%s: firmware file not found. Bypassing update.\n",
__func__);
ret = 0;
goto out;
} else if ((ret & 0xFF000000) == ERROR_FLASH_PROCEDURE) {
pr_err("%s: firmware update failed; retrying. ERROR %08X\n",
__func__, ret);
/* Power cycle the touch IC */
fts_chip_powercycle(info);
ret = flashProcedure(info->board->fw_name, info->reflash_fw,
keep_cx);
if ((ret & 0xFF000000) == ERROR_FLASH_PROCEDURE) {
pr_err("%s: firmware update failed again! ERROR %08X\n",
__func__, ret);
pr_err("Fw Auto Update Failed!\n");
return ret;
}
}
info->reflash_fw = 0;
pr_info("%s: Verifying if CX CRC Error...\n", __func__);
ret = fts_system_reset();
if (ret >= OK) {
ret = pollForErrorType(error_to_search, 4);
if (ret < OK) {
pr_info("%s: No Cx CRC Error Found!\n", __func__);
pr_info("%s: Verifying if Panel CRC Error...\n",
__func__);
error_to_search[0] = EVT_TYPE_ERROR_CRC_PANEL_HEAD;
error_to_search[1] = EVT_TYPE_ERROR_CRC_PANEL;
ret = pollForErrorType(error_to_search, 2);
if (ret < OK) {
pr_info("%s: No Panel CRC Error Found!\n",
__func__);
init_type = NO_INIT;
} else {
pr_err("%s: Panel CRC Error FOUND! CRC ERROR = %02X\n",
__func__, ret);
init_type = SPECIAL_PANEL_INIT;
}
} else {
pr_err("%s: Cx CRC Error FOUND! CRC ERROR = %02X\n",
__func__, ret);
/** This path of the code is used only in case there is
* a CRC error in code or config which not allow the fw
* to compute the CRC in the CX before
*/
pr_info("%s: Try to recovery with CX in fw file...\n",
__func__);
ret = flashProcedure(info->board->fw_name, CRC_CX, 0);
pr_info("%s: Refresh panel init data", __func__);
}
} else {
/* Skip initialization because the real state is unknown */
pr_err("%s: Error while executing system reset! ERROR %08X\n",
__func__, ret);
}
if (init_type == NO_INIT) {
#ifdef PRE_SAVED_METHOD
if (systemInfo.u8_cfgAfeVer != systemInfo.u8_cxAfeVer) {
init_type = SPECIAL_FULL_PANEL_INIT;
pr_err("%s: Different CX AFE Ver: %02X != %02X... Execute FULL Panel Init!\n",
__func__, systemInfo.u8_cfgAfeVer,
systemInfo.u8_cxAfeVer);
} else
#endif
if (systemInfo.u8_cfgAfeVer != systemInfo.u8_panelCfgAfeVer) {
init_type = SPECIAL_PANEL_INIT;
pr_err("%s: Different Panel AFE Ver: %02X != %02X... Execute Panel Init!\n",
__func__, systemInfo.u8_cfgAfeVer,
systemInfo.u8_panelCfgAfeVer);
} else
init_type = NO_INIT;
}
out:
/** Reinitialize after a complete FW update or if the initialization
* status is not correct.
*/
if (init_type != NO_INIT) {
ret = fts_chip_initialization(info, init_type);
if (ret < OK) {
pr_err("%s: Cannot initialize the chip ERROR %08X\n",
__func__, ret);
}
/* Reset after initialization */
ret = fts_system_reset();
if (ret < OK) {
pr_err("%s: Reset failed, ERROR %08X\n", __func__,
ret);
}
}
ret = fts_init_sensing(info);
if (ret < OK) {
pr_err("Cannot initialize the hardware device ERROR %08X\n",
ret);
}
pr_err("Fw Update Finished! error = %08X\n", ret);
return ret;
}
#ifndef FW_UPDATE_ON_PROBE
/**
* Function called by the delayed workthread executed after the probe in
* order to perform the fw update flow
* @see fts_fw_update()
*/
static void fts_fw_update_auto(struct work_struct *work)
{
struct delayed_work *fwu_work = container_of(work, struct delayed_work,
work);
struct fts_ts_info *info = container_of(fwu_work, struct fts_ts_info,
fwu_work);
fts_set_bus_ref(info, FTS_BUS_REF_FW_UPDATE, true);
fts_fw_update(info);
fts_set_bus_ref(info, FTS_BUS_REF_FW_UPDATE, false);
}
#endif
/* TODO: define if need to do the full mp at the boot */
/**
* Execute the initialization of the IC (supporting a retry mechanism),
* checking also the resulting data
* @see production_test_main()
*/
static int fts_chip_initialization(struct fts_ts_info *info, int init_type)
{
int ret2 = 0;
int retry;
int initretrycnt = 0;
/* initialization error, retry initialization */
for (retry = 0; retry <= RETRY_INIT_BOOT; retry++) {
ret2 = production_test_initialization(init_type);
if (ret2 == OK)
break;
initretrycnt++;
pr_err("initialization cycle count = %04d - ERROR %08X\n",
initretrycnt, ret2);
fts_chip_powercycle(info);
}
if (ret2 < OK) /* initialization error */
pr_err("fts initialization failed 3 times\n");
return ret2;
}
static irqreturn_t fts_isr(int irq, void *handle)
{
struct fts_ts_info *info = handle;
info->timestamp = ktime_get_ns();
return IRQ_WAKE_THREAD;
}
/**
* Initialize the dispatch table with the event handlers for any possible event
* ID
* Set IRQ pin behavior (level triggered low)
* Register top half interrupt handler function.
* @see fts_interrupt_handler()
*/
static int fts_interrupt_install(struct fts_ts_info *info)
{
int i, error = 0;
info->event_dispatch_table = kzalloc(sizeof(event_dispatch_handler_t) *
NUM_EVT_ID, GFP_KERNEL);
if (!info->event_dispatch_table) {
pr_err("OOM allocating event dispatch table\n");
return -ENOMEM;
}
for (i = 0; i < NUM_EVT_ID; i++)
info->event_dispatch_table[i] = fts_nop_event_handler;
install_handler(info, ENTER_POINT, enter_pointer);
install_handler(info, LEAVE_POINT, leave_pointer);
install_handler(info, MOTION_POINT, motion_pointer);
install_handler(info, ERROR, error);
install_handler(info, CONTROLLER_READY, controller_ready);
install_handler(info, STATUS_UPDATE, status);
install_handler(info, USER_REPORT, user_report);
/* disable interrupts in any case */
error = fts_disableInterrupt();
if (error) {
return error;
}
error = request_threaded_irq(info->client->irq, fts_isr,
fts_interrupt_handler, IRQF_ONESHOT | IRQF_TRIGGER_LOW,
FTS_TS_DRV_NAME, info);
if (error) {
pr_err("Request irq failed\n");
kfree(info->event_dispatch_table);
}
return error;
}
/**
* Clean the dispatch table and the free the IRQ.
* This function is called when the driver need to be removed
*/
static void fts_interrupt_uninstall(struct fts_ts_info *info)
{
fts_disableInterrupt();
kfree(info->event_dispatch_table);
free_irq(info->client->irq, info);
}
/**@}*/
/**
* This function try to attempt to communicate with the IC for the first time
* during the boot up process in order to read the necessary info for the
* following stages.
* The function execute a system reset, read fundamental info (system info)
* @return OK if success or an error code which specify the type of error
*/
static int fts_init(struct fts_ts_info *info)
{
int error;
error = fts_system_reset();
if (error < OK && isI2cError(error)) {
pr_err("Cannot reset the device! ERROR %08X\n", error);
return error;
} else {
if (error == (ERROR_TIMEOUT | ERROR_SYSTEM_RESET_FAIL)) {
pr_err("Setting default Sys INFO!\n");
error = defaultSysInfo(0);
} else {
error = readSysInfo(0); /* system reset OK */
if (error < OK) {
if (!isI2cError(error))
error = OK;
pr_err("Cannot read Sys Info! ERROR %08X\n",
error);
}
}
}
return error;
}
/**
* Execute a power cycle in the IC, toggling the power lines (AVDD and DVDD)
* @param info pointer to fts_ts_info struct which contain information of the
* regulators
* @return 0 if success or another value if fail
*/
int fts_chip_powercycle(struct fts_ts_info *info)
{
int error = 0;
pr_info("%s: Power Cycle Starting...\n", __func__);
pr_info("%s: Disabling IRQ...\n", __func__);
/** if IRQ pin is short with DVDD a call to the ISR will triggered when
* the regulator is turned off if IRQ not disabled */
fts_disableInterrupt();
if (info->vdd_reg) {
error = regulator_disable(info->vdd_reg);
if (error < 0)
pr_err("%s: Failed to disable DVDD regulator\n",
__func__);
}
if (info->avdd_reg) {
error = regulator_disable(info->avdd_reg);
if (error < 0)
pr_err("%s: Failed to disable AVDD regulator\n",
__func__);
}
if (info->board->reset_gpio != GPIO_NOT_DEFINED)
gpio_set_value(info->board->reset_gpio, 0);
else
mdelay(300);
/* in FTI power up first the digital and then the analog */
if (info->vdd_reg) {
error = regulator_enable(info->vdd_reg);
if (error < 0)
pr_err("%s: Failed to enable DVDD regulator\n",
__func__);
}
mdelay(1);
if (info->avdd_reg) {
error = regulator_enable(info->avdd_reg);
if (error < 0)
pr_err("%s: Failed to enable AVDD regulator\n",
__func__);
}
mdelay(5); /* time needed by the regulators for reaching the regime
* values */
if (info->board->reset_gpio != GPIO_NOT_DEFINED) {
mdelay(10); /* time to wait before bring up the reset
* gpio after the power up of the regulators */
gpio_set_value(info->board->reset_gpio, 1);
}
release_all_touches(info);
pr_info("%s: Power Cycle Finished! ERROR CODE = %08x\n",
__func__, error);
setSystemResetedUp(1);
setSystemResetedDown(1);
return error;
}
/**
* Complete the boot up process, initializing the sensing of the IC according
* to the current setting chosen by the host
* Register the notifier for the suspend/resume actions and the event handler
* @return OK if success or an error code which specify the type of error
*/
static int fts_init_sensing(struct fts_ts_info *info)
{
int error = 0;
error |= msm_drm_register_client(&info->notifier);/* register the
* suspend/resume
* function */
error |= fts_interrupt_install(info); /* register event handler */
error |= fts_mode_handler(info, 0); /* enable the features and
* sensing */
/* error |= fts_enableInterrupt(); */ /* enable the interrupt */
error |= fts_resetDisableIrqCount();
if (error < OK)
pr_err("%s Init after Probe error (ERROR = %08X)\n",
__func__, error);
heatmap_enable();
return error;
}
/* TODO: change this function according with the needs of customer in terms
* of feature to enable/disable */
/**
* @ingroup mode_section
* @{
*/
/**
* The function handle the switching of the mode in the IC enabling/disabling
* the sensing and the features set from the host
* @param info pointer to fts_ts_info which contains info about the device and
* its hw setup
* @param force if 1, the enabling/disabling command will be send even
* if the feature was already enabled/disabled otherwise it will judge if
* the feature changed status or the IC had a system reset
* @return OK if success or an error code which specify the type of error
*/
static int fts_mode_handler(struct fts_ts_info *info, int force)
{
int res = OK;
int ret = OK;
u8 settings[4] = { 0 };
/* disable irq wake because resuming from gesture mode */
if (IS_POWER_MODE(info->mode, SCAN_MODE_LOW_POWER) &&
(info->resume_bit == 1))
disable_irq_wake(info->client->irq);
info->mode = MODE_NOTHING; /* initialize the mode to nothing
* in order to be updated depending
* on the features enabled */
pr_debug("%s: Mode Handler starting...\n", __func__);
switch (info->resume_bit) {
case 0: /* screen down */
pr_debug("%s: Screen OFF...\n", __func__);
/* do sense off in order to avoid the flooding of the fifo with
* touch events if someone is touching the panel during suspend
**/
pr_info("%s: Sense OFF!\n", __func__);
/* for speed reason (no need to check echo in this case and
* interrupt can be enabled) */
ret = setScanMode(SCAN_MODE_ACTIVE, 0x00);
res |= ret; /* to avoid warning unsused ret variable when a
* ll the features are disabled */
#ifdef GESTURE_MODE
if (info->gesture_enabled == 1) {
pr_info("%s: enter in gesture mode !\n",
__func__);
res = enterGestureMode(isSystemResettedDown());
if (res >= OK) {
enable_irq_wake(info->client->irq);
fromIDtoMask(FEAT_SEL_GESTURE,
(u8 *)&info->mode,
sizeof(info->mode));
MODE_LOW_POWER(info->mode, 0);
} else
pr_err("%s: enterGestureMode failed! ERROR %08X recovery in senseOff...\n",
__func__, res);
}
#endif
setSystemResetedDown(0);
break;
case 1: /* screen up */
pr_debug("%s: Screen ON...\n", __func__);
#ifdef GLOVE_MODE
if ((info->glove_enabled == FEAT_ENABLE &&
isSystemResettedUp()) || force == 1) {
pr_info("%s: Glove Mode setting...\n", __func__);
settings[0] = info->glove_enabled;
/* required to satisfy also the disable case */
ret = setFeatures(FEAT_SEL_GLOVE, settings, 1);
if (ret < OK)
pr_err("%s: error during setting GLOVE_MODE! ERROR %08X\n",
__func__, ret);
res |= ret;
if (ret >= OK && info->glove_enabled == FEAT_ENABLE) {
fromIDtoMask(FEAT_SEL_GLOVE, (u8 *)&info->mode,
sizeof(info->mode));
pr_info("%s: GLOVE_MODE Enabled!\n", __func__);
} else
pr_info("%s: GLOVE_MODE Disabled!\n", __func__);
}
#endif
#ifdef COVER_MODE
if ((info->cover_enabled == FEAT_ENABLE &&
isSystemResettedUp()) || force == 1) {
pr_info("%s: Cover Mode setting...\n", __func__);
settings[0] = info->cover_enabled;
ret = setFeatures(FEAT_SEL_COVER, settings, 1);
if (ret < OK)
pr_err("%s: error during setting COVER_MODE! ERROR %08X\n",
__func__, ret);
res |= ret;
if (ret >= OK && info->cover_enabled == FEAT_ENABLE) {
fromIDtoMask(FEAT_SEL_COVER, (u8 *)&info->mode,
sizeof(info->mode));
pr_info("%s: COVER_MODE Enabled!\n", __func__);
} else
pr_info("%s: COVER_MODE Disabled!\n", __func__);
}
#endif
#ifdef CHARGER_MODE
if ((info->charger_enabled > 0 && isSystemResettedUp()) ||
force == 1) {
pr_info("%s: Charger Mode setting...\n", __func__);
settings[0] = info->charger_enabled;
ret = setFeatures(FEAT_SEL_CHARGER, settings, 1);
if (ret < OK)
pr_err("%s: error during setting CHARGER_MODE! ERROR %08X\n",
__func__, ret);
res |= ret;
if (ret >= OK && info->charger_enabled == FEAT_ENABLE) {
fromIDtoMask(FEAT_SEL_CHARGER,
(u8 *)&info->mode,
sizeof(info->mode));
pr_info("%s: CHARGER_MODE Enabled!\n",
__func__);
} else
pr_info("%s: CHARGER_MODE Disabled!\n",
__func__);
}
#endif
#ifdef GRIP_MODE
if ((info->grip_enabled == FEAT_ENABLE &&
isSystemResettedUp()) || force == 1) {
pr_info("%s: Grip Mode setting...\n", __func__);
settings[0] = info->grip_enabled;
ret = setFeatures(FEAT_SEL_GRIP, settings, 1);
if (ret < OK)
pr_err("%s: error during setting GRIP_MODE! ERROR %08X\n",
__func__, ret);
res |= ret;
if (ret >= OK && info->grip_enabled == FEAT_ENABLE) {
fromIDtoMask(FEAT_SEL_GRIP, (u8 *)&info->mode,
sizeof(info->mode));
pr_info("%s: GRIP_MODE Enabled!\n", __func__);
} else
pr_info("%s: GRIP_MODE Disabled!\n", __func__);
}
#endif
/* If some selective scan want to be enabled can be done
* an or of the following options
*/
/* settings[0] = ACTIVE_MULTI_TOUCH | ACTIVE_KEY | */
/* ACTIVE_HOVER | ACTIVE_PROXIMITY | */
/* ACTIVE_FORCE; */
settings[0] = 0xFF; /* enable all the possible scans mode
* supported by the config */
pr_info("%s: Sense ON!\n", __func__);
res |= setScanMode(SCAN_MODE_ACTIVE, settings[0]);
info->mode |= (SCAN_MODE_ACTIVE << 24);
MODE_ACTIVE(info->mode, settings[0]);
setSystemResetedUp(0);
break;
default:
pr_err("%s: invalid resume_bit value = %d! ERROR %08X\n",
__func__, info->resume_bit, ERROR_OP_NOT_ALLOW);
res = ERROR_OP_NOT_ALLOW;
}
pr_debug("%s: Mode Handler finished! res = %08X mode = %08X\n",
__func__, res, info->mode);
return res;
}
/**
* Configure the switch GPIO to toggle bus master between AP and SLPI.
* gpio_value takes one of
* { FTS_SWITCH_GPIO_VALUE_SLPI_MASTER, FTS_SWITCH_GPIO_VALUE_AP_MASTER }
*/
static void fts_set_switch_gpio(struct fts_ts_info *info, int gpio_value)
{
int retval;
unsigned int gpio = info->board->switch_gpio;
if (!gpio_is_valid(gpio))
return;
pr_debug("%s: toggling i2c switch to %s\n", __func__,
gpio_value == FTS_SWITCH_GPIO_VALUE_AP_MASTER ? "AP" : "SLPI");
retval = gpio_direction_output(gpio, gpio_value);
if (retval < 0)
pr_err("%s: Failed to toggle switch_gpio, err = %d\n",
__func__, retval);
}
/**
* Resume work function which perform a system reset, clean all the touches
* from the linux input system and prepare the ground for enabling the sensing
*/
static void fts_resume_work(struct work_struct *work)
{
struct fts_ts_info *info;
info = container_of(work, struct fts_ts_info, resume_work);
if (!info->sensor_sleep)
return;
#ifdef CONFIG_TOUCHSCREEN_TBN
if (info->tbn)
tbn_request_bus(info->tbn);
#endif
fts_set_switch_gpio(info, FTS_SWITCH_GPIO_VALUE_AP_MASTER);
__pm_wakeup_event(&info->wakesrc, jiffies_to_msecs(HZ));
info->resume_bit = 1;
fts_system_reset();
release_all_touches(info);
fts_mode_handler(info, 0);
info->sensor_sleep = false;
/* heatmap must be enabled after every chip reset (fts_system_reset) */
heatmap_enable();
fts_enableInterrupt();
complete_all(&info->bus_resumed);
}
/**
* Suspend work function which clean all the touches from Linux input system
* and prepare the ground to disabling the sensing or enter in gesture mode
*/
static void fts_suspend_work(struct work_struct *work)
{
struct fts_ts_info *info;
info = container_of(work, struct fts_ts_info, suspend_work);
if (info->sensor_sleep)
return;
reinit_completion(&info->bus_resumed);
__pm_wakeup_event(&info->wakesrc, jiffies_to_msecs(HZ));
info->resume_bit = 0;
fts_mode_handler(info, 0);
release_all_touches(info);
info->sensor_sleep = true;
fts_disableInterrupt();
fts_set_switch_gpio(info, FTS_SWITCH_GPIO_VALUE_SLPI_MASTER);
#ifdef CONFIG_TOUCHSCREEN_TBN
if (info->tbn)
tbn_release_bus(info->tbn);
#endif
}
/** @}*/
static void fts_aggregate_bus_state(struct fts_ts_info *info)
{
pr_debug("%s: bus_refmask = 0x%02X.\n", __func__,
info->bus_refmask);
/* Complete or cancel any outstanding transitions */
cancel_work_sync(&info->suspend_work);
cancel_work_sync(&info->resume_work);
if ((info->bus_refmask == 0 && info->sensor_sleep) ||
(info->bus_refmask != 0 && !info->sensor_sleep))
return;
if (info->bus_refmask == 0)
queue_work(info->event_wq, &info->suspend_work);
else
queue_work(info->event_wq, &info->resume_work);
}
int fts_set_bus_ref(struct fts_ts_info *info, u16 ref, bool enable)
{
int result = OK;
mutex_lock(&info->bus_mutex);
if ((enable && (info->bus_refmask & ref)) ||
(!enable && !(info->bus_refmask & ref))) {
pr_err("%s: reference is unexpectedly set: mask=0x%04X, ref=0x%04X, enable=%d.\n",
__func__, info->bus_refmask, ref, enable);
mutex_unlock(&info->bus_mutex);
return ERROR_OP_NOT_ALLOW;
}
if (enable) {
/* IRQs can only keep the bus active. IRQs received while the
* bus is transferred to SLPI should be ignored.
*/
if (ref == FTS_BUS_REF_IRQ && info->bus_refmask == 0)
result = ERROR_OP_NOT_ALLOW;
else
info->bus_refmask |= ref;
} else
info->bus_refmask &= ~ref;
fts_aggregate_bus_state(info);
mutex_unlock(&info->bus_mutex);
/* When triggering a wake, wait up to one second to resume. SCREEN_ON
* and IRQ references do not need to wait.
*/
if (enable && ref != FTS_BUS_REF_SCREEN_ON && ref != FTS_BUS_REF_IRQ) {
wait_for_completion_timeout(&info->bus_resumed, HZ);
if (info->sensor_sleep) {
pr_err("%s: Failed to wake the touch bus: mask=0x%04X, ref=0x%04X, enable=%d.\n",
__func__, info->bus_refmask, ref, enable);
result = ERROR_TIMEOUT;
}
}
return result;
}
/**
* Callback function used to detect the suspend/resume events generated by
* clicking the power button.
* This function schedule a suspend or resume work according to the event
* received.
*/
static int fts_screen_state_chg_callback(struct notifier_block *nb,
unsigned long val, void *data)
{
struct fts_ts_info *info = container_of(nb, struct fts_ts_info,
notifier);
struct msm_drm_notifier *evdata = data;
unsigned int blank;
if (val != MSM_DRM_EVENT_BLANK && val != MSM_DRM_EARLY_EVENT_BLANK)
return NOTIFY_DONE;
if (!info || !evdata || !evdata->data) {
pr_info("%s: Bad fts notifier call!\n", __func__);
return NOTIFY_DONE;
}
pr_debug("%s: fts notifier begin!\n", __func__);
/* finish processing any events on queue */
flush_workqueue(info->event_wq);
blank = *(int *) (evdata->data);
switch (blank) {
case MSM_DRM_BLANK_POWERDOWN:
case MSM_DRM_BLANK_LP:
if (val == MSM_DRM_EARLY_EVENT_BLANK) {
pr_info("%s: BLANK\n", __func__);
fts_set_bus_ref(info, FTS_BUS_REF_SCREEN_ON, false);
}
break;
case MSM_DRM_BLANK_UNBLANK:
if (val == MSM_DRM_EVENT_BLANK) {
pr_info("%s: UNBLANK\n", __func__);
fts_set_bus_ref(info, FTS_BUS_REF_SCREEN_ON, true);
}
break;
}
return NOTIFY_OK;
}
static struct notifier_block fts_noti_block = {
.notifier_call = fts_screen_state_chg_callback,
};
/**
* From the name of the power regulator get/put the actual regulator structs
* (copying their references into fts_ts_info variable)
* @param info pointer to fts_ts_info which contains info about the device and
* its hw setup
* @param get if 1, the regulators are get otherwise they are put (released)
* back to the system
* @return OK if success or an error code which specify the type of error
*/
static int fts_get_reg(struct fts_ts_info *info, bool get)
{
int retval;
const struct fts_hw_platform_data *bdata = info->board;
if (!get) {
retval = 0;
goto regulator_put;
}
if ((bdata->vdd_reg_name != NULL) && (*bdata->vdd_reg_name != 0)) {
info->vdd_reg = regulator_get(info->dev, bdata->vdd_reg_name);
if (IS_ERR(info->vdd_reg)) {
pr_err("%s: Failed to get power regulator\n", __func__);
retval = PTR_ERR(info->vdd_reg);
goto regulator_put;
}
}
if ((bdata->avdd_reg_name != NULL) && (*bdata->avdd_reg_name != 0)) {
info->avdd_reg = regulator_get(info->dev, bdata->avdd_reg_name);
if (IS_ERR(info->avdd_reg)) {
pr_err("%s: Failed to get bus pullup regulator\n",
__func__);
retval = PTR_ERR(info->avdd_reg);
goto regulator_put;
}
}
return OK;
regulator_put:
if (info->vdd_reg) {
regulator_put(info->vdd_reg);
info->vdd_reg = NULL;
}
if (info->avdd_reg) {
regulator_put(info->avdd_reg);
info->avdd_reg = NULL;
}
return retval;
}
/**
* Enable or disable the power regulators
* @param info pointer to fts_ts_info which contains info about the device and
* its hw setup
* @param enable if 1, the power regulators are turned on otherwise they are
* turned off
* @return OK if success or an error code which specify the type of error
*/
static int fts_enable_reg(struct fts_ts_info *info, bool enable)
{
int retval;
if (!enable) {
retval = 0;
goto disable_pwr_reg;
}
if (info->vdd_reg) {
retval = regulator_enable(info->vdd_reg);
if (retval < 0) {
pr_err("%s: Failed to enable bus regulator\n",
__func__);
goto exit;
}
}
if (info->avdd_reg) {
retval = regulator_enable(info->avdd_reg);
if (retval < 0) {
pr_err("%s: Failed to enable power regulator\n",
__func__);
goto disable_bus_reg;
}
}
return OK;
disable_pwr_reg:
if (info->avdd_reg)
regulator_disable(info->avdd_reg);
disable_bus_reg:
if (info->vdd_reg)
regulator_disable(info->vdd_reg);
exit:
return retval;
}
/**
* Configure a GPIO according to the parameters
* @param gpio gpio number
* @param config if true, the gpio is set up otherwise it is free
* @param dir direction of the gpio, 0 = in, 1 = out
* @param state initial value (if the direction is in, this parameter is
* ignored)
* return error code
*/
static int fts_gpio_setup(int gpio, bool config, int dir, int state)
{
int retval = 0;
unsigned char buf[16];
if (config) {
scnprintf(buf, sizeof(buf), "fts_gpio_%u\n", gpio);
retval = gpio_request(gpio, buf);
if (retval) {
pr_err("%s: Failed to get gpio %d (code: %d)",
__func__, gpio, retval);
return retval;
}
if (dir == 0)
retval = gpio_direction_input(gpio);
else
retval = gpio_direction_output(gpio, state);
if (retval) {
pr_err("%s: Failed to set gpio %d direction",
__func__, gpio);
return retval;
}
} else
gpio_free(gpio);
return retval;
}
/**
* Setup the IRQ and RESET (if present) gpios.
* If the Reset Gpio is present it will perform a cycle HIGH-LOW-HIGH in order
* to assure that the IC has been reset properly
*/
static int fts_set_gpio(struct fts_ts_info *info)
{
int retval;
struct fts_hw_platform_data *bdata =
info->board;
retval = fts_gpio_setup(bdata->irq_gpio, true, 0, 0);
if (retval < 0) {
pr_err("%s: Failed to configure irq GPIO\n", __func__);
goto err_gpio_irq;
}
if (gpio_is_valid(bdata->switch_gpio)) {
retval = fts_gpio_setup(bdata->switch_gpio, true, 1, 1);
if (retval < 0)
pr_err("%s: Failed to configure I2C switch\n",
__func__);
}
if (bdata->reset_gpio >= 0) {
retval = fts_gpio_setup(bdata->reset_gpio, true, 1, 0);
if (retval < 0) {
pr_err("%s: Failed to configure reset GPIO\n",
__func__);
goto err_gpio_reset;
}
}
if (bdata->reset_gpio >= 0) {
gpio_set_value(bdata->reset_gpio, 0);
mdelay(10);
gpio_set_value(bdata->reset_gpio, 1);
}
return OK;
err_gpio_reset:
fts_gpio_setup(bdata->irq_gpio, false, 0, 0);
bdata->reset_gpio = GPIO_NOT_DEFINED;
err_gpio_irq:
return retval;
}
/**
* Retrieve and parse the hw information from the device tree node defined in
* the system.
* the most important information to obtain are: IRQ and RESET gpio numbers,
* power regulator names
* In the device file node is possible to define additional optional
* information
* that can be parsed here.
*/
static int parse_dt(struct device *dev, struct fts_hw_platform_data *bdata)
{
int retval;
const char *name;
struct device_node *np = dev->of_node;
u32 coords[2];
bdata->switch_gpio = of_get_named_gpio(np, "st,switch_gpio", 0);
pr_info("switch_gpio = %d\n", bdata->switch_gpio);
bdata->irq_gpio = of_get_named_gpio_flags(np, "st,irq-gpio", 0, NULL);
pr_info("irq_gpio = %d\n", bdata->irq_gpio);
retval = of_property_read_string(np, "st,regulator_dvdd", &name);
if (retval == -EINVAL)
bdata->vdd_reg_name = NULL;
else if (retval < 0)
return retval;
else {
bdata->vdd_reg_name = name;
pr_info("pwr_reg_name = %s\n", name);
}
retval = of_property_read_string(np, "st,regulator_avdd", &name);
if (retval == -EINVAL)
bdata->avdd_reg_name = NULL;
else if (retval < 0)
return retval;
else {
bdata->avdd_reg_name = name;
pr_info("bus_reg_name = %s\n", name);
}
if (of_property_read_bool(np, "st,reset-gpio")) {
bdata->reset_gpio = of_get_named_gpio_flags(np,
"st,reset-gpio", 0,
NULL);
pr_info("reset_gpio =%d\n", bdata->reset_gpio);
} else
bdata->reset_gpio = GPIO_NOT_DEFINED;
retval = of_property_read_string(np, "st,firmware_name", &name);
if (retval == -EINVAL)
bdata->fw_name = PATH_FILE_FW;
else if (retval >= 0)
bdata->fw_name = name;
pr_info("firmware name = %s\n", bdata->fw_name);
if (of_property_read_u32_array(np, "st,max-coords", coords, 2)) {
pr_err("st,max-coords not found, using 1440x2560\n");
coords[0] = 1440;
coords[1] = 2560;
}
bdata->x_axis_max = coords[0];
bdata->y_axis_max = coords[1];
return OK;
}
/**
* Probe function, called when the driver it is matched with a device
* with the same name compatible name
* This function allocate, initialize all the most important functions and flow
* those are used by the driver to operate with the IC.
* It allocates device variables, initialize queues and schedule works,
* registers the IRQ handler, suspend/resume callbacks, registers the device
* to the linux input subsystem etc.
*/
#ifdef I2C_INTERFACE
static int fts_probe(struct i2c_client *client, const struct i2c_device_id *idp)
{
#else
static int fts_probe(struct spi_device *client)
{
#endif
struct fts_ts_info *info = NULL;
int error = 0;
struct device_node *dp = client->dev.of_node;
int retval;
int skip_5_1 = 0;
u16 bus_type;
pr_info("%s: driver probe begin!\n", __func__);
pr_info("driver ver. %s\n", FTS_TS_DRV_VERSION);
pr_info("SET Bus Functionality :\n");
#ifdef I2C_INTERFACE
pr_info("I2C interface...\n");
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
pr_err("Unsupported I2C functionality\n");
error = -EIO;
goto ProbeErrorExit_0;
}
pr_info("i2c address: %x\n", client->addr);
bus_type = BUS_I2C;
#else
pr_info("SPI interface...\n");
client->mode = SPI_MODE_0;
#ifndef SPI4_WIRE
client->mode |= SPI_3WIRE;
#endif
client->max_speed_hz = SPI_CLOCK_FREQ;
client->bits_per_word = 8;
if (spi_setup(client) < 0) {
pr_err("Unsupported SPI functionality\n");
error = -EIO;
goto ProbeErrorExit_0;
}
bus_type = BUS_SPI;
#endif
pr_info("SET Device driver INFO:\n");
info = kzalloc(sizeof(struct fts_ts_info), GFP_KERNEL);
if (!info) {
pr_err("Out of memory... Impossible to allocate struct info!\n");
error = -ENOMEM;
goto ProbeErrorExit_0;
}
info->client = client;
info->dev = &info->client->dev;
dev_set_drvdata(info->dev, info);
#ifdef CONFIG_TOUCHSCREEN_TBN
info->tbn = tbn_init(info->dev);
if (!info->tbn) {
pr_err("ERROR: failed to init tbn context\n");
error = -ENODEV;
goto ProbeErrorExit_1;
}
#endif
if (dp) {
info->board = devm_kzalloc(&client->dev,
sizeof(struct fts_hw_platform_data),
GFP_KERNEL);
if (!info->board) {
pr_err("ERROR:info.board kzalloc failed\n");
goto ProbeErrorExit_1;
}
parse_dt(&client->dev, info->board);
}
pr_info("SET Regulators:\n");
retval = fts_get_reg(info, true);
if (retval < 0) {
pr_err("ERROR: %s: Failed to get regulators\n", __func__);
goto ProbeErrorExit_1;
}
retval = fts_enable_reg(info, true);
if (retval < 0) {
pr_err("%s: ERROR Failed to enable regulators\n", __func__);
goto ProbeErrorExit_2;
}
pr_info("SET GPIOS:\n");
retval = fts_set_gpio(info);
if (retval < 0) {
pr_err("%s: ERROR Failed to set up GPIO's\n", __func__);
goto ProbeErrorExit_2;
}
info->client->irq = gpio_to_irq(info->board->irq_gpio);
pr_info("SET Event Handler:\n");
wakeup_source_init(&info->wakesrc, "fts_tp");
info->event_wq = alloc_workqueue("fts-event-queue", WQ_UNBOUND |
WQ_HIGHPRI | WQ_CPU_INTENSIVE, 1);
if (!info->event_wq) {
pr_err("ERROR: Cannot create work thread\n");
error = -ENOMEM;
goto ProbeErrorExit_4;
}
INIT_WORK(&info->resume_work, fts_resume_work);
INIT_WORK(&info->suspend_work, fts_suspend_work);
init_completion(&info->bus_resumed);
complete_all(&info->bus_resumed);
pr_info("SET Input Device Property:\n");
info->dev = &info->client->dev;
info->input_dev = input_allocate_device();
if (!info->input_dev) {
pr_err("ERROR: No such input device defined!\n");
error = -ENODEV;
goto ProbeErrorExit_5;
}
info->input_dev->dev.parent = &client->dev;
info->input_dev->name = FTS_TS_DRV_NAME;
scnprintf(fts_ts_phys, sizeof(fts_ts_phys), "%s/input0",
info->input_dev->name);
info->input_dev->phys = fts_ts_phys;
info->input_dev->id.bustype = bus_type;
info->input_dev->id.vendor = 0x0001;
info->input_dev->id.product = 0x0002;
info->input_dev->id.version = 0x0100;
__set_bit(EV_SYN, info->input_dev->evbit);
__set_bit(EV_KEY, info->input_dev->evbit);
__set_bit(EV_ABS, info->input_dev->evbit);
__set_bit(BTN_TOUCH, info->input_dev->keybit);
/* __set_bit(BTN_TOOL_FINGER, info->input_dev->keybit); */
/* __set_bit(BTN_TOOL_PEN, info->input_dev->keybit); */
input_mt_init_slots(info->input_dev, TOUCH_ID_MAX, INPUT_MT_DIRECT);
/* input_mt_init_slots(info->input_dev, TOUCH_ID_MAX); */
input_set_abs_params(info->input_dev, ABS_MT_POSITION_X, X_AXIS_MIN,
info->board->x_axis_max, 0, 0);
input_set_abs_params(info->input_dev, ABS_MT_POSITION_Y, Y_AXIS_MIN,
info->board->y_axis_max, 0, 0);
input_set_abs_params(info->input_dev, ABS_MT_TOUCH_MAJOR, AREA_MIN,
AREA_MAX, 0, 0);
input_set_abs_params(info->input_dev, ABS_MT_TOUCH_MINOR, AREA_MIN,
AREA_MAX, 0, 0);
input_set_abs_params(info->input_dev, ABS_MT_PRESSURE, PRESSURE_MIN,
PRESSURE_MAX, 0, 0);
#ifndef SKIP_DISTANCE
input_set_abs_params(info->input_dev, ABS_MT_DISTANCE, DISTANCE_MIN,
DISTANCE_MAX, 0, 0);
#endif
#ifdef GESTURE_MODE
input_set_capability(info->input_dev, EV_KEY, KEY_WAKEUP);
input_set_capability(info->input_dev, EV_KEY, KEY_M);
input_set_capability(info->input_dev, EV_KEY, KEY_O);
input_set_capability(info->input_dev, EV_KEY, KEY_E);
input_set_capability(info->input_dev, EV_KEY, KEY_W);
input_set_capability(info->input_dev, EV_KEY, KEY_C);
input_set_capability(info->input_dev, EV_KEY, KEY_L);
input_set_capability(info->input_dev, EV_KEY, KEY_F);
input_set_capability(info->input_dev, EV_KEY, KEY_V);
input_set_capability(info->input_dev, EV_KEY, KEY_S);
input_set_capability(info->input_dev, EV_KEY, KEY_Z);
input_set_capability(info->input_dev, EV_KEY, KEY_WWW);
input_set_capability(info->input_dev, EV_KEY, KEY_LEFT);
input_set_capability(info->input_dev, EV_KEY, KEY_RIGHT);
input_set_capability(info->input_dev, EV_KEY, KEY_UP);
input_set_capability(info->input_dev, EV_KEY, KEY_DOWN);
input_set_capability(info->input_dev, EV_KEY, KEY_F1);
input_set_capability(info->input_dev, EV_KEY, KEY_F2);
input_set_capability(info->input_dev, EV_KEY, KEY_F3);
input_set_capability(info->input_dev, EV_KEY, KEY_F4);
input_set_capability(info->input_dev, EV_KEY, KEY_F5);
input_set_capability(info->input_dev, EV_KEY, KEY_LEFTBRACE);
input_set_capability(info->input_dev, EV_KEY, KEY_RIGHTBRACE);
#endif
#ifdef PHONE_KEY
/* KEY associated to the touch screen buttons */
input_set_capability(info->input_dev, EV_KEY, KEY_HOMEPAGE);
input_set_capability(info->input_dev, EV_KEY, KEY_BACK);
input_set_capability(info->input_dev, EV_KEY, KEY_MENU);
#endif
mutex_init(&info->diag_cmd_lock);
mutex_init(&(info->input_report_mutex));
mutex_init(&info->bus_mutex);
/* Assume screen is on throughout probe */
info->bus_refmask = FTS_BUS_REF_SCREEN_ON;
#ifdef GESTURE_MODE
mutex_init(&gestureMask_mutex);
#endif
spin_lock_init(&fts_int);
/* register the multi-touch input device */
error = input_register_device(info->input_dev);
if (error) {
pr_err("ERROR: No such input device\n");
error = -ENODEV;
goto ProbeErrorExit_5_1;
}
skip_5_1 = 1;
/* track slots */
info->touch_id = 0;
#ifdef STYLUS_MODE
info->stylus_id = 0;
#endif
/* init feature switches (by default all the features are disable,
* if one feature want to be enabled from the start,
* set the corresponding value to 1)*/
info->gesture_enabled = 0;
info->glove_enabled = 0;
info->charger_enabled = 0;
info->cover_enabled = 0;
info->grip_enabled = 0;
info->resume_bit = 1;
info->notifier = fts_noti_block;
/*
* This *must* be done before request_threaded_irq is called.
* Otherwise, if an interrupt is received before request is added,
* but after the interrupt has been subscribed to, pm_qos_req
* may be accessed before initialization in the interrupt handler.
*/
pm_qos_add_request(&info->pm_qos_req, PM_QOS_CPU_DMA_LATENCY,
PM_QOS_DEFAULT_VALUE);
pr_info("Init Core Lib:\n");
initCore(info);
/* init hardware device */
pr_info("Device Initialization:\n");
error = fts_init(info);
if (error < OK) {
pr_err("Cannot initialize the device ERROR %08X\n", error);
error = -ENODEV;
goto ProbeErrorExit_6;
}
/*
* Heatmap_probe must be called before irq routine is registered,
* because heatmap_read is called from interrupt context.
* This is done as part of fwu_work.
* At the same time, heatmap_probe must be done after fts_init(..) has
* completed, because getForceLen() and getSenseLen() require
* the chip to be initialized.
*/
info->v4l2.parent_dev = info->dev;
info->v4l2.input_dev = info->input_dev;
info->v4l2.read_frame = read_heatmap_raw;
info->v4l2.width = getForceLen();
info->v4l2.height = getSenseLen();
/* 120 Hz operation */
info->v4l2.timeperframe.numerator = 1;
info->v4l2.timeperframe.denominator = 120;
error = heatmap_probe(&info->v4l2);
if (error < OK)
goto ProbeErrorExit_6;
#if defined(FW_UPDATE_ON_PROBE) && defined(FW_H_FILE)
pr_info("FW Update and Sensing Initialization:\n");
error = fts_fw_update(info);
if (error < OK) {
pr_err("Cannot execute fw upgrade the device ERROR %08X\n",
error);
error = -ENODEV;
goto ProbeErrorExit_7;
}
#else
pr_info("SET Auto Fw Update:\n");
info->fwu_workqueue = alloc_workqueue("fts-fwu-queue", WQ_UNBOUND |
WQ_HIGHPRI | WQ_CPU_INTENSIVE, 1);
if (!info->fwu_workqueue) {
pr_err("ERROR: Cannot create fwu work thread\n");
goto ProbeErrorExit_7;
}
INIT_DELAYED_WORK(&info->fwu_work, fts_fw_update_auto);
#endif
pr_info("SET Device File Nodes:\n");
/* sysfs stuff */
info->attrs.attrs = fts_attr_group;
error = sysfs_create_group(&client->dev.kobj, &info->attrs);
if (error) {
pr_err("ERROR: Cannot create sysfs structure!\n");
error = -ENODEV;
goto ProbeErrorExit_7;
}
error = fts_proc_init();
if (error < OK)
pr_err("Error: can not create /proc file!\n");
#ifndef FW_UPDATE_ON_PROBE
queue_delayed_work(info->fwu_workqueue, &info->fwu_work,
msecs_to_jiffies(EXP_FN_WORK_DELAY_MS));
#endif
info->touchsim.wq = alloc_workqueue("fts-heatmap_test-queue",
WQ_UNBOUND | WQ_HIGHPRI |
WQ_CPU_INTENSIVE, 1);
if (info->touchsim.wq)
INIT_WORK(&(info->touchsim.work), touchsim_work);
else
pr_err("ERROR: Cannot create touch sim. test work queue\n");
pr_info("Probe Finished!\n");
return OK;
ProbeErrorExit_7:
if(info->touchsim.wq)
destroy_workqueue(info->touchsim.wq);
#ifdef FW_UPDATE_ON_PROBE
msm_drm_unregister_client(&info->notifier);
#endif
heatmap_remove(&info->v4l2);
ProbeErrorExit_6:
pm_qos_remove_request(&info->pm_qos_req);
input_unregister_device(info->input_dev);
ProbeErrorExit_5_1:
if (skip_5_1 != 1)
input_free_device(info->input_dev);
ProbeErrorExit_5:
destroy_workqueue(info->event_wq);
ProbeErrorExit_4:
/* destroy_workqueue(info->fwu_workqueue); */
wakeup_source_trash(&info->wakesrc);
fts_enable_reg(info, false);
ProbeErrorExit_2:
fts_get_reg(info, false);
ProbeErrorExit_1:
kfree(info);
ProbeErrorExit_0:
pr_err("Probe Failed!\n");
return error;
}
/**
* Clear and free all the resources associated to the driver.
* This function is called when the driver need to be removed.
*/
#ifdef I2C_INTERFACE
static int fts_remove(struct i2c_client *client)
{
#else
static int fts_remove(struct spi_device *client)
{
#endif
struct fts_ts_info *info = dev_get_drvdata(&(client->dev));
/* Force the bus active throughout removal of the client */
fts_set_bus_ref(info, FTS_BUS_REF_FORCE_ACTIVE, true);
pr_info("%s\n", __func__);
#ifdef CONFIG_TOUCHSCREEN_TBN
tbn_cleanup(info->tbn);
#endif
fts_proc_remove();
/* sysfs stuff */
sysfs_remove_group(&client->dev.kobj, &info->attrs);
/* remove interrupt and event handlers */
fts_interrupt_uninstall(info);
heatmap_remove(&info->v4l2);
pm_qos_remove_request(&info->pm_qos_req);
msm_drm_unregister_client(&info->notifier);
/* unregister the device */
input_unregister_device(info->input_dev);
/* input_free_device(info->input_dev ); */
/* Remove the work thread */
destroy_workqueue(info->event_wq);
wakeup_source_trash(&info->wakesrc);
if(info->touchsim.wq)
destroy_workqueue(info->touchsim.wq);
#ifndef FW_UPDATE_ON_PROBE
destroy_workqueue(info->fwu_workqueue);
#endif
fts_enable_reg(info, false);
fts_get_reg(info, false);
/* free gpio */
if (gpio_is_valid(info->board->irq_gpio))
gpio_free(info->board->irq_gpio);
if (gpio_is_valid(info->board->switch_gpio))
gpio_free(info->board->switch_gpio);
if (gpio_is_valid(info->board->reset_gpio))
gpio_free(info->board->reset_gpio);
/* free all */
kfree(info);
return OK;
}
/**
* Struct which contains the compatible names that need to match with
* the definition of the device in the device tree node
*/
static struct of_device_id fts_of_match_table[] = {
{
.compatible = "st,fts",
},
{},
};
#ifdef I2C_INTERFACE
static const struct i2c_device_id fts_device_id[] = {
{ FTS_TS_DRV_NAME, 0 },
{}
};
static struct i2c_driver fts_i2c_driver = {
.driver = {
.name = FTS_TS_DRV_NAME,
.of_match_table = fts_of_match_table,
},
.probe = fts_probe,
.remove = fts_remove,
.id_table = fts_device_id,
};
#else
static struct spi_driver fts_spi_driver = {
.driver = {
.name = FTS_TS_DRV_NAME,
.of_match_table = fts_of_match_table,
.owner = THIS_MODULE,
},
.probe = fts_probe,
.remove = fts_remove,
};
#endif
static int __init fts_driver_init(void)
{
#ifdef I2C_INTERFACE
return i2c_add_driver(&fts_i2c_driver);
#else
return spi_register_driver(&fts_spi_driver);
#endif
}
static void __exit fts_driver_exit(void)
{
pr_info("%s\n", __func__);
#ifdef I2C_INTERFACE
i2c_del_driver(&fts_i2c_driver);
#else
spi_unregister_driver(&fts_spi_driver);
#endif
}
MODULE_DESCRIPTION("STMicroelectronics MultiTouch IC Driver");
MODULE_AUTHOR("STMicroelectronics");
MODULE_LICENSE("GPL");
late_initcall(fts_driver_init);
module_exit(fts_driver_exit);