Merge tag 'usb-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/PHY updates from Greg KH:
 "Here is the big set of USB and PHY driver patches for 5.2-rc1

  There is the usual set of:

   - USB gadget updates

   - PHY driver updates and additions

   - USB serial driver updates and fixes

   - typec updates and new chips supported

   - mtu3 driver updates

   - xhci driver updates

   - other tiny driver updates

  Nothing really interesting, just constant forward progress.

  All of these have been in linux-next for a while with no reported
  issues. The usb-gadget and usb-serial trees were merged a bit "late",
  but both of them had been in linux-next before they got merged here
  last Friday"

* tag 'usb-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (206 commits)
  USB: serial: f81232: implement break control
  USB: serial: f81232: add high baud rate support
  USB: serial: f81232: clear overrun flag
  USB: serial: f81232: fix interrupt worker not stop
  usb: dwc3: Rename DWC3_DCTL_LPM_ERRATA
  usb: dwc3: Fix default lpm_nyet_threshold value
  usb: dwc3: debug: Print GET_STATUS(device) tracepoint
  usb: dwc3: Do core validation early on probe
  usb: dwc3: gadget: Set lpm_capable
  usb: gadget: atmel: tie wake lock to running clock
  usb: gadget: atmel: support USB suspend
  usb: gadget: atmel_usba_udc: simplify setting of interrupt-enabled mask
  dwc2: gadget: Fix completed transfer size calculation in DDMA
  usb: dwc2: Set lpm mode parameters depend on HW configuration
  usb: dwc2: Fix channel disable flow
  usb: dwc2: Set actual frame number for completed ISOC transfer
  usb: gadget: do not use __constant_cpu_to_le16
  usb: dwc2: gadget: Increase descriptors count for ISOC's
  usb: introduce usb_ep_type_string() function
  usb: dwc3: move synchronize_irq() out of the spinlock protected block
  ...

1 files changed, 22 insertions, 25 deletions

diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c
index e086630e41a9..fd0f6c5dfbc1 100644
--- a/drivers/usb/mtu3/mtu3_plat.c
+++ b/drivers/usb/mtu3/mtu3_plat.c
@@ -16,6 +16,7 @@
 
 #include "mtu3.h"
 #include "mtu3_dr.h"
+#include "mtu3_debug.h"
 
 /* u2-port0 should be powered on and enabled; */
 int ssusb_check_clocks(struct ssusb_mtk *ssusb, u32 ex_clks)
@@ -210,30 +211,16 @@ static void ssusb_ip_sw_reset(struct ssusb_mtk *ssusb)
 	mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
 }
 
-/* ignore the error if the clock does not exist */
-static struct clk *get_optional_clk(struct device *dev, const char *id)
-{
-	struct clk *opt_clk;
-
-	opt_clk = devm_clk_get(dev, id);
-	/* ignore error number except EPROBE_DEFER */
-	if (IS_ERR(opt_clk) && (PTR_ERR(opt_clk) != -EPROBE_DEFER))
-		opt_clk = NULL;
-
-	return opt_clk;
-}
-
 static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb)
 {
 	struct device_node *node = pdev->dev.of_node;
 	struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
 	struct device *dev = &pdev->dev;
-	struct regulator *vbus;
 	struct resource *res;
 	int i;
 	int ret;
 
-	ssusb->vusb33 = devm_regulator_get(&pdev->dev, "vusb33");
+	ssusb->vusb33 = devm_regulator_get(dev, "vusb33");
 	if (IS_ERR(ssusb->vusb33)) {
 		dev_err(dev, "failed to get vusb33\n");
 		return PTR_ERR(ssusb->vusb33);
@@ -245,15 +232,15 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb)
 		return PTR_ERR(ssusb->sys_clk);
 	}
 
-	ssusb->ref_clk = get_optional_clk(dev, "ref_ck");
+	ssusb->ref_clk = devm_clk_get_optional(dev, "ref_ck");
 	if (IS_ERR(ssusb->ref_clk))
 		return PTR_ERR(ssusb->ref_clk);
 
-	ssusb->mcu_clk = get_optional_clk(dev, "mcu_ck");
+	ssusb->mcu_clk = devm_clk_get_optional(dev, "mcu_ck");
 	if (IS_ERR(ssusb->mcu_clk))
 		return PTR_ERR(ssusb->mcu_clk);
 
-	ssusb->dma_clk = get_optional_clk(dev, "dma_ck");
+	ssusb->dma_clk = devm_clk_get_optional(dev, "dma_ck");
 	if (IS_ERR(ssusb->dma_clk))
 		return PTR_ERR(ssusb->dma_clk);
 
@@ -286,7 +273,7 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb)
 		ssusb->dr_mode = USB_DR_MODE_OTG;
 
 	if (ssusb->dr_mode == USB_DR_MODE_PERIPHERAL)
-		return 0;
+		goto out;
 
 	/* if host role is supported */
 	ret = ssusb_wakeup_of_property_parse(ssusb, node);
@@ -299,15 +286,14 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb)
 	of_property_read_u32(node, "mediatek,u3p-dis-msk",
 			     &ssusb->u3p_dis_msk);
 
-	vbus = devm_regulator_get(&pdev->dev, "vbus");
-	if (IS_ERR(vbus)) {
+	otg_sx->vbus = devm_regulator_get(dev, "vbus");
+	if (IS_ERR(otg_sx->vbus)) {
 		dev_err(dev, "failed to get vbus\n");
-		return PTR_ERR(vbus);
+		return PTR_ERR(otg_sx->vbus);
 	}
-	otg_sx->vbus = vbus;
 
 	if (ssusb->dr_mode == USB_DR_MODE_HOST)
-		return 0;
+		goto out;
 
 	/* if dual-role mode is supported */
 	otg_sx->is_u3_drd = of_property_read_bool(node, "mediatek,usb3-drd");
@@ -322,6 +308,7 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb)
 		}
 	}
 
+out:
 	dev_info(dev, "dr_mode: %d, is_u3_dr: %d, u3p_dis_msk: %x, drd: %s\n",
 		ssusb->dr_mode, otg_sx->is_u3_drd, ssusb->u3p_dis_msk,
 		otg_sx->manual_drd_enabled ? "manual" : "auto");
@@ -354,6 +341,8 @@ static int mtu3_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	ssusb_debugfs_create_root(ssusb);
+
 	/* enable power domain */
 	pm_runtime_enable(dev);
 	pm_runtime_get_sync(dev);
@@ -401,7 +390,11 @@ static int mtu3_probe(struct platform_device *pdev)
 			goto gadget_exit;
 		}
 
-		ssusb_otg_switch_init(ssusb);
+		ret = ssusb_otg_switch_init(ssusb);
+		if (ret) {
+			dev_err(dev, "failed to initialize switch\n");
+			goto host_exit;
+		}
 		break;
 	default:
 		dev_err(dev, "unsupported mode: %d\n", ssusb->dr_mode);
@@ -411,6 +404,8 @@ static int mtu3_probe(struct platform_device *pdev)
 
 	return 0;
 
+host_exit:
+	ssusb_host_exit(ssusb);
 gadget_exit:
 	ssusb_gadget_exit(ssusb);
 comm_exit:
@@ -418,6 +413,7 @@ comm_exit:
 comm_init_err:
 	pm_runtime_put_sync(dev);
 	pm_runtime_disable(dev);
+	ssusb_debugfs_remove_root(ssusb);
 
 	return ret;
 }
@@ -445,6 +441,7 @@ static int mtu3_remove(struct platform_device *pdev)
 	ssusb_rscs_exit(ssusb);
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
+	ssusb_debugfs_remove_root(ssusb);
 
 	return 0;
 }