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input: nova_0flash_mmi: update dda driver to v2.0

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nova_0flash_mmi:
Minor updates for safety coding in moto_ts_dda.c.

Change-Id: I6233fc159bb49e2fb6414743c441bfc157a7a20b
Signed-off-by: wangyq13 <wangyq13@lenovo.com>
Reviewed-on: https://gerrit.mot.com/2422204
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Jun Weng <wengjun1@motorola.com>
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
wangyq13 2022-11-07 12:08:07 +08:00 • committed by Yeqing Wang
commit 80f4582c2f
1 changed files with 15 additions and 3 deletions
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18
drivers/input/touchscreen/nova_0flash_mmi/moto_ts_dda.c
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@ -257,6 +257,7 @@ static int get_finger_report(int id, unsigned long arg){
finger_buffer_rp = (unsigned char)((wp + (DDA_MAX_BUFFER -
MAX_IO_CONTROL_REPORT)) % DDA_MAX_BUFFER);
} else {
num = MAX_IO_CONTROL_REPORT; //for safety implementation
finger_buffer_rp = 0;
}
memset(&finger_reports, 0, sizeof(finger_reports));
@ -339,6 +340,7 @@ static struct file_operations penraw_fops = {
void moto_dda_process_finger_press(uint8_t touch_id, struct dda_finger_coords *finger_data) {
struct dda_finger_info *pfinger_info;
int i;
unsigned char id_is_found;
if(touch_id >= DDA_TOUCH_ID_MAX){
return;
@ -358,12 +360,22 @@ void moto_dda_process_finger_press(uint8_t touch_id, struct dda_finger_coords *f
dda_finger_report_buf[touch_id].frame_no++;
if(DDA_FINGER_RELEASE == dda_finger_report_buf[touch_id].last_status){
pfinger_info->coords.status = DDA_FINGER_ENTER;
//check registerd iDs to avoid duplicated registration.
id_is_found = 0;
for(i=0;i<DDA_TOUCH_ID_MAX;i++){
if(-1 == dda_finger_id_assign_table[i]){
dda_finger_id_assign_table[i] = touch_id;
if(touch_id == dda_finger_id_assign_table[i]){
id_is_found = 1;
break;
}
}
if(0 == id_is_found){
for(i=0;i<DDA_TOUCH_ID_MAX;i++){
if(-1 == dda_finger_id_assign_table[i]){
dda_finger_id_assign_table[i] = touch_id;
break;
}
}
}
}else{
pfinger_info->coords.status = DDA_FINGER_MOVE;
}
@ -548,7 +560,7 @@ int moto_dda_register_cdevice(void) {
void moto_dda_exit(void) {
dev_t dev = MKDEV(dda_cdev_ctrl.major_number, MINOR_NUMBER_START);
/* remove "/dev/novatech_penraw" */
/* remove "/dev/moto_penraw" */
if (NULL != dda_cdev_ctrl.penraw_char_dev_class) {
device_destroy(dda_cdev_ctrl.penraw_char_dev_class,
MKDEV(dda_cdev_ctrl.major_number, 0));