diff options
Diffstat (limited to 'target/linux/generic/backport-4.14/030-v4.17-0001-usb-dwc2-add-support-for-host-mode-external-vbus-sup.patch')
-rw-r--r-- | target/linux/generic/backport-4.14/030-v4.17-0001-usb-dwc2-add-support-for-host-mode-external-vbus-sup.patch | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/target/linux/generic/backport-4.14/030-v4.17-0001-usb-dwc2-add-support-for-host-mode-external-vbus-sup.patch b/target/linux/generic/backport-4.14/030-v4.17-0001-usb-dwc2-add-support-for-host-mode-external-vbus-sup.patch deleted file mode 100644 index 4d029ebfe2..0000000000 --- a/target/linux/generic/backport-4.14/030-v4.17-0001-usb-dwc2-add-support-for-host-mode-external-vbus-sup.patch +++ /dev/null @@ -1,109 +0,0 @@ -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 - * -@@ -3346,6 +3363,7 @@ 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) { -@@ -4455,6 +4473,9 @@ static int _dwc2_hcd_start(struct usb_hc - } - - spin_unlock_irqrestore(&hsotg->lock, flags); -+ -+ dwc2_vbus_supply_init(hsotg); -+ - return 0; - } - -@@ -4482,6 +4503,8 @@ 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); - } - -@@ -4518,6 +4541,7 @@ 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 */ -@@ -4598,6 +4622,8 @@ 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); - |