Modify synaptics compile error on V(CR).

TP:
1. Modify synaptics compile error on V(CR).
2. get_pid_task is more safer than pid_task, and get_pis_task
in the whitelist of google Andorid 11.

Change-Id: I7e6836db375bb8e80b6753afd400bb7db179cc18
Reviewed-on: https://gerrit.mot.com/1718097
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Jichao Zou <zoujc@motorola.com>
Submit-Approved: Jira Key

drivers/input/touchscreen/synaptics_tcm_mmi_v2/Kbuild

@@ -1,7 +1,7 @@
 # add -Wall to try to catch everything we can.
 EXTRA_CFLAGS += -Wall
-EXTRA_CFLAGS += -I$(TOP)/motorola/kernel/modules/include \
-		-I$(TOP)/motorola/kernel/modules/drivers/input/touchscreen/synaptics_tcm_mmi_v2
+EXTRA_CFLAGS += -I$(ANDROID_BUILD_TOP)/motorola/kernel/modules/include \
+		-I$(ANDROID_BUILD_TOP)/motorola/kernel/modules/drivers/input/touchscreen/synaptics_tcm_mmi_v2
 
 obj-m += synaptics_spi.o
 obj-m += synaptics_i2c.o
@@ -17,4 +17,5 @@ synaptics_core_module-objs := synaptics_core.o synaptics_touch.o
 ifneq ($(filter m y,$(CONFIG_INPUT_TOUCHSCREEN_MMI)),)
 	EXTRA_CFLAGS += -DCONFIG_INPUT_TOUCHSCREEN_MMI
 	synaptics_core_module-objs += synaptics_ts_mmi.o
+	KBUILD_EXTRA_SYMBOLS += $(CURDIR)/$(KBUILD_EXTMOD)/../touchscreen_mmi/Module.symvers
 endif

drivers/input/touchscreen/synaptics_tcm_mmi_v2/synaptics_core.c

@@ -3443,7 +3443,7 @@ int syna_tcm_suspend(struct device *dev)
 }
 #endif
 
-#ifdef CONFIG_FB
+#if defined (CONFIG_FB) || defined (CONFIG_INPUT_TOUCHSCREEN_MMI)
 int syna_tcm_early_suspend(struct device *dev)
 {
 	int retval;
@@ -3491,7 +3491,9 @@ int syna_tcm_early_suspend(struct device *dev)
 
 	return 0;
 }
+#endif
 
+#if defined (CONFIG_FB) || !defined (CONFIG_INPUT_TOUCHSCREEN_MMI)
 static int syna_tcm_fb_notifier_cb(struct notifier_block *nb,
 		unsigned long action, void *data)
 {

drivers/input/touchscreen/synaptics_tcm_mmi_v2/synaptics_core.h

@@ -44,6 +44,8 @@
 #include <linux/delay.h>
 #include <linux/platform_device.h>
 #include "synaptics_tcm.h"
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
 #ifdef CONFIG_FB
 #include <linux/fb.h>
 #include <linux/notifier.h>

drivers/input/touchscreen/synaptics_tcm_mmi_v2/synaptics_diagnostics.c

@@ -35,6 +35,8 @@
  */
 
 #include "synaptics_core.h"
+#include <linux/sched/signal.h>
+#include <linux/mmi_kernel_common.h>
 
 #define SYSFS_DIR_NAME "diagnostics"
 
@@ -48,7 +50,7 @@ struct diag_hcd {
 	unsigned char report_type;
 	enum pingpong_state state;
 	struct kobject *sysfs_dir;
-	struct siginfo sigio;
+	struct SIGINFO sigio;
 	struct task_struct *task;
 	struct syna_tcm_buffer ping;
 	struct syna_tcm_buffer pong;
@@ -105,7 +107,7 @@ static ssize_t diag_sysfs_pid_store(struct device *dev,
 	diag_hcd->pid = input;
 
 	if (diag_hcd->pid) {
-		diag_hcd->task = pid_task(find_vpid(diag_hcd->pid),
+		diag_hcd->task = get_pid_task(find_vpid(diag_hcd->pid),
 				PIDTYPE_PID);
 		if (!diag_hcd->task) {
 			LOGE(tcm_hcd->pdev->dev.parent,

drivers/input/touchscreen/synaptics_tcm_mmi_v2/synaptics_reflash.c

@@ -311,6 +311,7 @@ static struct bin_attribute bin_attrs[] = {
 	},
 };
 
+#ifdef CONFIG_INPUT_TOUCHSCREEN_MMI
 static int syna_ts_set_fwname(const char* fw_name) {
 	if (fw_name != NULL) {
 		strlcpy(reflash_hcd->fw_name, fw_name,
@@ -338,6 +339,7 @@ static int syna_ts_do_reflash(void)
 
 	return retval;
 }
+#endif
 
 static ssize_t reflash_sysfs_reflash_store(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
@@ -2442,8 +2444,10 @@ static int reflash_init(struct syna_tcm_hcd *tcm_hcd)
 	reflash_hcd->tcm_hcd = tcm_hcd;
 
 	reflash_hcd->force_update = FORCE_REFLASH;
+#ifdef CONFIG_INPUT_TOUCHSCREEN_MMI
 	tcm_hcd->set_fw_name = syna_ts_set_fwname;
 	tcm_hcd->do_fw_update = syna_ts_do_reflash;
+#endif
 
 	mutex_init(&reflash_hcd->reflash_mutex);
 

drivers/input/touchscreen/synaptics_tcm_mmi_v2/synaptics_touch.c

@@ -761,6 +761,7 @@ static void touch_report(void)
 		switch (status) {
 		case LIFT:
 #ifdef TYPE_B_PROTOCOL
+#if defined(CONFIG_INPUT_TOUCHSCREEN_MMI)
 			if (tcm_hcd->imports && tcm_hcd->imports->report_touch_event) {
 				struct touch_event_data touch_event;
 				memset(&touch_event, 0, sizeof(touch_event));
@@ -774,6 +775,7 @@ static void touch_report(void)
 					 break;
 				}
 			}
+#endif
 			input_mt_slot(touch_hcd->input_dev, idx);
 			input_mt_report_slot_state(touch_hcd->input_dev,
 					MT_TOOL_FINGER, 0);
@@ -800,6 +802,7 @@ static void touch_report(void)
 			if (bdata->y_flip)
 				y = touch_hcd->input_params.max_y - y;
 
+#if defined(CONFIG_INPUT_TOUCHSCREEN_MMI)
 			if (tcm_hcd->imports && tcm_hcd->imports->report_touch_event) {
 				struct touch_event_data touch_event;
 				memset(&touch_event, 0, sizeof(touch_event));
@@ -821,6 +824,7 @@ static void touch_report(void)
 					 break;
 				}
 			}
+#endif
 
 #ifdef TYPE_B_PROTOCOL
 			input_mt_slot(touch_hcd->input_dev, idx);

include/linux/mmi_kernel_common.h

@@ -29,4 +29,10 @@
 
 #endif
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 4, 0))
+#define SIGINFO kernel_siginfo
+#else
+#define SIGINFO siginfo
+#endif
+
 #endif    /*_MMI_KERNEL_COMMON_H*/