usb: dwc2: Update common interrupt handler to call gadget interrupt handler

Make dwc2_handle_common_intr call the gadget interrupt function when operating
in peripheral mode. Remove the spinlock functions in s3c_hsotg_irq as
dwc2_handle_common_intr() already has the spinlocks.

Move the registeration of the IRQ to common code for platform and PCI.

Remove duplicate interrupt conditions that was in gadget, as those are handled
by dwc2 common interrupt handler.

Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

4 files changed, 17 insertions, 53 deletions

diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c
index d9269459d481..7605850b7a9c 100644
--- a/drivers/usb/dwc2/core.c
+++ b/drivers/usb/dwc2/core.c
@@ -458,16 +458,6 @@ int dwc2_core_init(struct dwc2_hsotg *hsotg, bool select_phy, int irq)
 	/* Clear the SRP success bit for FS-I2c */
 	hsotg->srp_success = 0;
 
-	if (irq >= 0) {
-		dev_dbg(hsotg->dev, "registering common handler for irq%d\n",
-			irq);
-		retval = devm_request_irq(hsotg->dev, irq,
-					  dwc2_handle_common_intr, IRQF_SHARED,
-					  dev_name(hsotg->dev), hsotg);
-		if (retval)
-			return retval;
-	}
-
 	/* Enable common interrupts */
 	dwc2_enable_common_interrupts(hsotg);
 
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index ec853406a930..37c791602d66 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -2285,33 +2285,12 @@ irq_retry:
 
 	gintsts &= gintmsk;
 
-	if (gintsts & GINTSTS_OTGINT) {
-		u32 otgint = readl(hsotg->regs + GOTGINT);
-
-		dev_info(hsotg->dev, "OTGInt: %08x\n", otgint);
-
-		writel(otgint, hsotg->regs + GOTGINT);
-	}
-
-	if (gintsts & GINTSTS_SESSREQINT) {
-		dev_dbg(hsotg->dev, "%s: SessReqInt\n", __func__);
-		writel(GINTSTS_SESSREQINT, hsotg->regs + GINTSTS);
-	}
-
 	if (gintsts & GINTSTS_ENUMDONE) {
 		writel(GINTSTS_ENUMDONE, hsotg->regs + GINTSTS);
 
 		s3c_hsotg_irq_enumdone(hsotg);
 	}
 
-	if (gintsts & GINTSTS_CONIDSTSCHNG) {
-		dev_dbg(hsotg->dev, "ConIDStsChg (DSTS=0x%08x, GOTCTL=%08x)\n",
-			readl(hsotg->regs + DSTS),
-			readl(hsotg->regs + GOTGCTL));
-
-		writel(GINTSTS_CONIDSTSCHNG, hsotg->regs + GINTSTS);
-	}
-
 	if (gintsts & (GINTSTS_OEPINT | GINTSTS_IEPINT)) {
 		u32 daint = readl(hsotg->regs + DAINT);
 		u32 daintmsk = readl(hsotg->regs + DAINTMSK);
@@ -2392,25 +2371,6 @@ irq_retry:
 		s3c_hsotg_handle_rx(hsotg);
 	}
 
-	if (gintsts & GINTSTS_MODEMIS) {
-		dev_warn(hsotg->dev, "warning, mode mismatch triggered\n");
-		writel(GINTSTS_MODEMIS, hsotg->regs + GINTSTS);
-	}
-
-	if (gintsts & GINTSTS_USBSUSP) {
-		dev_info(hsotg->dev, "GINTSTS_USBSusp\n");
-		writel(GINTSTS_USBSUSP, hsotg->regs + GINTSTS);
-
-		call_gadget(hsotg, suspend);
-	}
-
-	if (gintsts & GINTSTS_WKUPINT) {
-		dev_info(hsotg->dev, "GINTSTS_WkUpIn\n");
-		writel(GINTSTS_WKUPINT, hsotg->regs + GINTSTS);
-
-		call_gadget(hsotg, resume);
-	}
-
 	if (gintsts & GINTSTS_ERLYSUSP) {
 		dev_dbg(hsotg->dev, "GINTSTS_ErlySusp\n");
 		writel(GINTSTS_ERLYSUSP, hsotg->regs + GINTSTS);
@@ -3510,14 +3470,14 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq)
 	s3c_hsotg_hw_cfg(hsotg);
 	s3c_hsotg_init(hsotg);
 
-	ret = devm_request_irq(dev, irq, s3c_hsotg_irq, 0,
-				dev_name(dev), hsotg);
+	ret = devm_request_irq(hsotg->dev, irq, s3c_hsotg_irq, IRQF_SHARED,
+				dev_name(hsotg->dev), hsotg);
 	if (ret < 0) {
 		s3c_hsotg_phy_disable(hsotg);
 		clk_disable_unprepare(hsotg->clk);
 		regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies),
 				       hsotg->supplies);
-		dev_err(dev, "cannot claim IRQ\n");
+		dev_err(dev, "cannot claim IRQ for gadget\n");
 		goto err_clk;
 	}
 
diff --git a/drivers/usb/dwc2/pci.c b/drivers/usb/dwc2/pci.c
index 6d33ecf2e295..a4e724b0a62e 100644
--- a/drivers/usb/dwc2/pci.c
+++ b/drivers/usb/dwc2/pci.c
@@ -141,6 +141,12 @@ static int dwc2_driver_probe(struct pci_dev *dev,
 
 	pci_set_master(dev);
 
+	retval = devm_request_irq(hsotg->dev, dev->irq,
+				  dwc2_handle_common_intr, IRQF_SHARED,
+				  dev_name(hsotg->dev), hsotg);
+	if (retval)
+		return retval;
+
 	spin_lock_init(&hsotg->lock);
 	retval = dwc2_hcd_init(hsotg, dev->irq, &dwc2_module_params);
 	if (retval) {
diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
index b94867ba9ccf..3552602ddbf6 100644
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -196,6 +196,14 @@ static int dwc2_driver_probe(struct platform_device *dev)
 		return irq;
 	}
 
+	dev_dbg(hsotg->dev, "registering common handler for irq%d\n",
+		irq);
+	retval = devm_request_irq(hsotg->dev, irq,
+				  dwc2_handle_common_intr, IRQF_SHARED,
+				  dev_name(hsotg->dev), hsotg);
+	if (retval)
+		return retval;
+
 	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
 	hsotg->regs = devm_ioremap_resource(&dev->dev, res);
 	if (IS_ERR(hsotg->regs))