kernel: Copy patches from kernel 4.14 to 4.19

This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 109 insertions, 0 deletions

diff --git a/target/linux/generic/backport-4.19/030-v4.17-0001-usb-dwc2-add-support-for-host-mode-external-vbus-sup.patch b/target/linux/generic/backport-4.19/030-v4.17-0001-usb-dwc2-add-support-for-host-mode-external-vbus-sup.patch
new file mode 100644
index 0000000000..a17844f5e6
--- /dev/null
+++ b/target/linux/generic/backport-4.19/030-v4.17-0001-usb-dwc2-add-support-for-host-mode-external-vbus-sup.patch
@@ -0,0 +1,109 @@
+From 531ef5ebea96394ddb7f554d4d88e017dde30a59 Mon Sep 17 00:00:00 2001
+From: Amelie Delaunay <amelie.delaunay@st.com>
+Date: Tue, 13 Feb 2018 09:28:12 +0100
+Subject: [PATCH] usb: dwc2: add support for host mode external vbus supply
+
+This patch adds a way to enable an external vbus supply in host mode,
+when dwc2 drvvbus signal is not used.
+
+This patch is very similar to the one done in U-Boot dwc2 driver [1]. It
+also adds dynamic vbus supply management depending on the role and state
+of the core.
+
+[1] https://lists.denx.de/pipermail/u-boot/2017-March/283434.html
+
+Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
+Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
+---
+ drivers/usb/dwc2/core.h |  2 ++
+ drivers/usb/dwc2/hcd.c  | 26 ++++++++++++++++++++++++++
+ 2 files changed, 28 insertions(+)
+
+--- a/drivers/usb/dwc2/core.h
++++ b/drivers/usb/dwc2/core.h
+@@ -777,6 +777,7 @@ struct dwc2_hregs_backup {
+  * @plat:               The platform specific configuration data. This can be
+  *                      removed once all SoCs support usb transceiver.
+  * @supplies:           Definition of USB power supplies
++ * @vbus_supply:        Regulator supplying vbus.
+  * @phyif:              PHY interface width
+  * @lock:		Spinlock that protects all the driver data structures
+  * @priv:		Stores a pointer to the struct usb_hcd
+@@ -914,6 +915,7 @@ struct dwc2_hsotg {
+ 	struct usb_phy *uphy;
+ 	struct dwc2_hsotg_plat *plat;
+ 	struct regulator_bulk_data supplies[DWC2_NUM_SUPPLIES];
++	struct regulator *vbus_supply;
+ 	u32 phyif;
+ 
+ 	spinlock_t lock;
+--- a/drivers/usb/dwc2/hcd.c
++++ b/drivers/usb/dwc2/hcd.c
+@@ -359,6 +359,23 @@ static void dwc2_gusbcfg_init(struct dwc
+ 	dwc2_writel(usbcfg, hsotg->regs + GUSBCFG);
+ }
+ 
++static int dwc2_vbus_supply_init(struct dwc2_hsotg *hsotg)
++{
++	hsotg->vbus_supply = devm_regulator_get_optional(hsotg->dev, "vbus");
++	if (IS_ERR(hsotg->vbus_supply))
++		return 0;
++
++	return regulator_enable(hsotg->vbus_supply);
++}
++
++static int dwc2_vbus_supply_exit(struct dwc2_hsotg *hsotg)
++{
++	if (hsotg->vbus_supply)
++		return regulator_disable(hsotg->vbus_supply);
++
++	return 0;
++}
++
+ /**
+  * dwc2_enable_host_interrupts() - Enables the Host mode interrupts
+  *
+@@ -3342,6 +3359,7 @@ static void dwc2_conn_id_status_change(s
+ 
+ 	/* B-Device connector (Device Mode) */
+ 	if (gotgctl & GOTGCTL_CONID_B) {
++		dwc2_vbus_supply_exit(hsotg);
+ 		/* Wait for switch to device mode */
+ 		dev_dbg(hsotg->dev, "connId B\n");
+ 		if (hsotg->bus_suspended) {
+@@ -4448,6 +4466,9 @@ static int _dwc2_hcd_start(struct usb_hc
+ 	}
+ 
+ 	spin_unlock_irqrestore(&hsotg->lock, flags);
++
++	dwc2_vbus_supply_init(hsotg);
++
+ 	return 0;
+ }
+ 
+@@ -4475,6 +4496,8 @@ static void _dwc2_hcd_stop(struct usb_hc
+ 	clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+ 	spin_unlock_irqrestore(&hsotg->lock, flags);
+ 
++	dwc2_vbus_supply_exit(hsotg);
++
+ 	usleep_range(1000, 3000);
+ }
+ 
+@@ -4511,6 +4534,7 @@ static int _dwc2_hcd_suspend(struct usb_
+ 		hprt0 |= HPRT0_SUSP;
+ 		hprt0 &= ~HPRT0_PWR;
+ 		dwc2_writel(hprt0, hsotg->regs + HPRT0);
++		dwc2_vbus_supply_exit(hsotg);
+ 	}
+ 
+ 	/* Enter hibernation */
+@@ -4591,6 +4615,8 @@ static int _dwc2_hcd_resume(struct usb_h
+ 		spin_unlock_irqrestore(&hsotg->lock, flags);
+ 		dwc2_port_resume(hsotg);
+ 	} else {
++		dwc2_vbus_supply_init(hsotg);
++
+ 		/* Wait for controller to correctly update D+/D- level */
+ 		usleep_range(3000, 5000);
+