drivers: power: supply: ti: Force PD charging if compatible

Xiaomi only supports PD if the charger is deemed official.
Bypass this to unlock PD with unofficial chargers.
Safety measures are not bypassed, as seen in
pd_get_bms_digest_verified() and usbpd_pm_sm().

Change-Id: Icc99a39ae00ee466f223807621bf9601f44c75ba

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "KernelSU-Next"]
+	path = KernelSU-Next
+	url = https://github.com/KernelSU-Next/KernelSU-Next

drivers/Kconfig

@@ -234,4 +234,5 @@ source "drivers/sensors/Kconfig"
 source "drivers/gpu/msm/Kconfig"
 
 source "drivers/energy_model/Kconfig"
+source "drivers/kernelsu/Kconfig"
 endmenu

drivers/Makefile

@@ -193,3 +193,5 @@ obj-$(CONFIG_UNISYS_VISORBUS)	+= visorbus/
 obj-$(CONFIG_SIOX)		+= siox/
 obj-$(CONFIG_GNSS)		+= gnss/
 obj-$(CONFIG_SENSORS_SSC)	+= sensors/
+
+obj-$(CONFIG_KSU) += kernelsu/

drivers/input/touchscreen/fts_521/fts.c

@@ -533,6 +533,22 @@ static struct tp_common_ops double_tap_ops = {
 	.show = double_tap_show,
 	.store = double_tap_store,
 };
+
+#ifdef CONFIG_TOUCHSCREEN_FOD
+static ssize_t fp_state_show(struct kobject *kobj,
+                             struct kobj_attribute *attr, char *buf)
+{
+	if (!fts_info)
+		return -EINVAL;
+
+	return sprintf(buf, "%d,%d,%d\n", fts_info->fod_pressed_x, fts_info->fod_pressed_y,
+		       fts_info->fod_pressed);
+}
+
+static struct tp_common_ops fp_state_ops = {
+	.show = fp_state_show,
+};
+#endif
 #endif
 
 #ifdef GRIP_MODE
@@ -4303,6 +4319,10 @@ static void fts_gesture_event_handler(struct fts_ts_info *info,
 		needCoords = 1;
 #ifdef CONFIG_TOUCHSCREEN_FOD
 		if (event[2] == GEST_ID_LONG_PRESS) {
+			info->fod_pressed = true;
+			info->fod_pressed_x = x;
+			info->fod_pressed_y = y;
+			tp_common_notify_fp_state();
 			if (!info->fod_down &&
 			    (info->fod_status == 1 || info->fod_status == 2)) {
 				MI_TOUCH_LOGI(1, "%s %s: FOD Down\n", tag,
@@ -4327,7 +4347,6 @@ static void fts_gesture_event_handler(struct fts_ts_info *info,
 				if ((info->sensor_sleep &&
 				     !info->sleep_finger) ||
 				    !info->sensor_sleep) {
-					info->fod_pressed = true;
 					input_report_key(info->input_dev,
 							 BTN_INFO, 1);
 					input_sync(info->input_dev);
@@ -4422,6 +4441,9 @@ static void fts_gesture_event_handler(struct fts_ts_info *info,
 			info->sleep_finger = 0;
 			info->fod_overlap = 0;
 			info->fod_pressed = false;
+			info->fod_pressed_x = 0;
+			info->fod_pressed_y = 0;
+			tp_common_notify_fp_state();
 			goto gesture_done;
 		}
 #endif
@@ -8241,6 +8263,7 @@ static int fts_probe(struct spi_device *client)
 	tp_common_set_double_tap_ops(&double_tap_ops);
 #ifdef CONFIG_TOUCHSCREEN_FOD
 	tp_common_set_fod_status_ops(&fod_status_ops);
+	tp_common_set_fp_state_ops(&fp_state_ops);
 #endif
 #endif
 

drivers/input/touchscreen/fts_521/fts.h

@@ -387,6 +387,8 @@ struct fts_ts_info {
 	unsigned long fod_id;
 	unsigned long fod_x;
 	unsigned long fod_y;
+	unsigned long fod_pressed_x;
+	unsigned long fod_pressed_y;
 	struct mutex fod_mutex;
 	struct mutex cmd_update_mutex;
 	bool fod_coordinate_update;

drivers/input/touchscreen/tp_common.c

@@ -13,10 +13,18 @@ struct kobject *touchpanel_kobj;
 		return sysfs_create_file(touchpanel_kobj, &kattr.attr);        \
 	}
 
+#define TS_ENABLE_NOTIFY(type)                                                 \
+	void tp_common_notify_##type(void)                                     \
+	{                                                                      \
+		sysfs_notify(touchpanel_kobj, NULL, __stringify(type));        \
+	}
+
 TS_ENABLE_FOPS(capacitive_keys)
 TS_ENABLE_FOPS(double_tap)
 TS_ENABLE_FOPS(fod_status)
+TS_ENABLE_FOPS(fp_state)
 TS_ENABLE_FOPS(reversed_keys)
+TS_ENABLE_NOTIFY(fp_state)
 
 static int __init tp_common_init(void)
 {

drivers/kernelsu

@@ -0,0 +1 @@
+../KernelSU-Next/kernel

drivers/power/supply/ti/pd_policy_manager.c

@@ -387,10 +387,7 @@ static bool pd_get_bms_digest_verified(struct usbpd_pm *pdpm)
 
 	pr_err("pval.intval: %d\n", pval.intval);
 
-	if (pval.intval == 1)
-		return true;
-	else
-		return false;
+	return true;
 }
 
 /* get bq27z561 chip ok*/

fs/internal.h

@@ -77,6 +77,7 @@ extern int finish_automount(struct vfsmount *, struct path *);
 extern int sb_prepare_remount_readonly(struct super_block *);
 
 extern void __init mnt_init(void);
+int path_umount(struct path *path, int flags);
 
 extern int __mnt_want_write_file(struct file *);
 extern void __mnt_drop_write_file(struct file *);

fs/namespace.c

@@ -1645,6 +1645,40 @@ static inline bool may_mandlock(void)
 }
 #endif
 
+static int can_umount(const struct path *path, int flags)
+{
+	struct mount *mnt = real_mount(path->mnt);
+
+	if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))
+		return -EINVAL;
+	if (!may_mount())
+		return -EPERM;
+	if (path->dentry != path->mnt->mnt_root)
+		return -EINVAL;
+	if (!check_mnt(mnt))
+		return -EINVAL;
+	if (mnt->mnt.mnt_flags & MNT_LOCKED) /* Check optimistically */
+		return -EINVAL;
+	if (flags & MNT_FORCE && !capable(CAP_SYS_ADMIN))
+		return -EPERM;
+	return 0;
+}
+
+int path_umount(struct path *path, int flags)
+{
+	struct mount *mnt = real_mount(path->mnt);
+	int ret;
+
+	ret = can_umount(path, flags);
+	if (!ret)
+		ret = do_umount(mnt, flags);
+
+	/* we mustn't call path_put() as that would clear mnt_expiry_mark */
+	dput(path->dentry);
+	mntput_no_expire(mnt);
+	return ret;
+}
+
 /*
  * Now umount can handle mount points as well as block devices.
  * This is important for filesystems which use unnamed block devices.

include/linux/input/tp_common.h

@@ -10,7 +10,9 @@ struct tp_common_ops {
 			 const char *buf, size_t count);
 };
 
+void tp_common_notify_fp_state(void);
 int tp_common_set_capacitive_keys_ops(struct tp_common_ops *ops);
 int tp_common_set_double_tap_ops(struct tp_common_ops *ops);
 int tp_common_set_fod_status_ops(struct tp_common_ops *ops);
+int tp_common_set_fp_state_ops(struct tp_common_ops *ops);
 int tp_common_set_reversed_keys_ops(struct tp_common_ops *ops);