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path: root/drivers/usb/dwc3/host.c
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Diffstat (limited to 'drivers/usb/dwc3/host.c')
-rw-r--r--drivers/usb/dwc3/host.c155
1 files changed, 128 insertions, 27 deletions
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index bef1c1ac2067..cf6512ed17a6 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -2,41 +2,126 @@
/*
* host.c - DesignWare USB3 DRD Controller Host Glue
*
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
+ * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
*/
-#include <linux/acpi.h>
+#include <linux/irq.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include "../host/xhci-port.h"
+#include "../host/xhci-ext-caps.h"
+#include "../host/xhci-caps.h"
+#include "../host/xhci-plat.h"
#include "core.h"
+#define XHCI_HCSPARAMS1 0x4
+#define XHCI_PORTSC_BASE 0x400
+
+/**
+ * dwc3_power_off_all_roothub_ports - Power off all Root hub ports
+ * @dwc: Pointer to our controller context structure
+ */
+static void dwc3_power_off_all_roothub_ports(struct dwc3 *dwc)
+{
+ void __iomem *xhci_regs;
+ u32 op_regs_base;
+ int port_num;
+ u32 offset;
+ u32 reg;
+ int i;
+
+ /* xhci regs are not mapped yet, do it temporarily here */
+ if (dwc->xhci_resources[0].start) {
+ if (dwc->xhci_resources[0].flags & IORESOURCE_MEM_NONPOSTED)
+ xhci_regs = ioremap_np(dwc->xhci_resources[0].start, DWC3_XHCI_REGS_END);
+ else
+ xhci_regs = ioremap(dwc->xhci_resources[0].start, DWC3_XHCI_REGS_END);
+ if (!xhci_regs) {
+ dev_err(dwc->dev, "Failed to ioremap xhci_regs\n");
+ return;
+ }
+
+ op_regs_base = HC_LENGTH(readl(xhci_regs));
+ reg = readl(xhci_regs + XHCI_HCSPARAMS1);
+ port_num = HCS_MAX_PORTS(reg);
+
+ for (i = 1; i <= port_num; i++) {
+ offset = op_regs_base + XHCI_PORTSC_BASE + 0x10 * (i - 1);
+ reg = readl(xhci_regs + offset);
+ reg &= ~PORT_POWER;
+ writel(reg, xhci_regs + offset);
+ }
+
+ iounmap(xhci_regs);
+ } else {
+ dev_err(dwc->dev, "xhci base reg invalid\n");
+ }
+}
+
+static void dwc3_xhci_plat_start(struct usb_hcd *hcd)
+{
+ struct platform_device *pdev;
+ struct dwc3 *dwc;
+
+ if (!usb_hcd_is_primary_hcd(hcd))
+ return;
+
+ pdev = to_platform_device(hcd->self.controller);
+ dwc = dev_get_drvdata(pdev->dev.parent);
+
+ dwc3_enable_susphy(dwc, true);
+}
+
+static const struct xhci_plat_priv dwc3_xhci_plat_quirk = {
+ .plat_start = dwc3_xhci_plat_start,
+};
+
+static void dwc3_host_fill_xhci_irq_res(struct dwc3 *dwc,
+ int irq, char *name)
+{
+ struct platform_device *pdev = to_platform_device(dwc->dev);
+ struct device_node *np = dev_of_node(&pdev->dev);
+
+ dwc->xhci_resources[1].start = irq;
+ dwc->xhci_resources[1].end = irq;
+ dwc->xhci_resources[1].flags = IORESOURCE_IRQ | irq_get_trigger_type(irq);
+ if (!name && np)
+ dwc->xhci_resources[1].name = of_node_full_name(pdev->dev.of_node);
+ else
+ dwc->xhci_resources[1].name = name;
+}
+
static int dwc3_host_get_irq(struct dwc3 *dwc)
{
struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
int irq;
irq = platform_get_irq_byname_optional(dwc3_pdev, "host");
- if (irq > 0)
+ if (irq > 0) {
+ dwc3_host_fill_xhci_irq_res(dwc, irq, "host");
goto out;
+ }
if (irq == -EPROBE_DEFER)
goto out;
irq = platform_get_irq_byname_optional(dwc3_pdev, "dwc_usb3");
- if (irq > 0)
+ if (irq > 0) {
+ dwc3_host_fill_xhci_irq_res(dwc, irq, "dwc_usb3");
goto out;
+ }
if (irq == -EPROBE_DEFER)
goto out;
irq = platform_get_irq(dwc3_pdev, 0);
if (irq > 0)
- goto out;
-
- if (!irq)
- irq = -EINVAL;
+ dwc3_host_fill_xhci_irq_res(dwc, irq, NULL);
out:
return irq;
@@ -44,31 +129,21 @@ out:
int dwc3_host_init(struct dwc3 *dwc)
{
- struct property_entry props[4];
+ struct property_entry props[6];
struct platform_device *xhci;
int ret, irq;
- struct resource *res;
- struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
int prop_idx = 0;
+ /*
+ * Some platforms need to power off all Root hub ports immediately after DWC3 set to host
+ * mode to avoid VBUS glitch happen when xhci get reset later.
+ */
+ dwc3_power_off_all_roothub_ports(dwc);
+
irq = dwc3_host_get_irq(dwc);
if (irq < 0)
return irq;
- res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, "host");
- if (!res)
- res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ,
- "dwc_usb3");
- if (!res)
- res = platform_get_resource(dwc3_pdev, IORESOURCE_IRQ, 0);
- if (!res)
- return -ENOMEM;
-
- dwc->xhci_resources[1].start = irq;
- dwc->xhci_resources[1].end = irq;
- dwc->xhci_resources[1].flags = res->flags;
- dwc->xhci_resources[1].name = res->name;
-
xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
if (!xhci) {
dev_err(dwc->dev, "couldn't allocate xHCI device\n");
@@ -76,7 +151,6 @@ int dwc3_host_init(struct dwc3 *dwc)
}
xhci->dev.parent = dwc->dev;
- ACPI_COMPANION_SET(&xhci->dev, ACPI_COMPANION(dwc->dev));
dwc->xhci = xhci;
@@ -89,6 +163,10 @@ int dwc3_host_init(struct dwc3 *dwc)
memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props));
+ props[prop_idx++] = PROPERTY_ENTRY_BOOL("xhci-sg-trb-cache-size-quirk");
+
+ props[prop_idx++] = PROPERTY_ENTRY_BOOL("write-64-hi-lo-quirk");
+
if (dwc->usb3_lpm_capable)
props[prop_idx++] = PROPERTY_ENTRY_BOOL("usb3-lpm-capable");
@@ -107,27 +185,50 @@ int dwc3_host_init(struct dwc3 *dwc)
if (DWC3_VER_IS_WITHIN(DWC3, ANY, 300A))
props[prop_idx++] = PROPERTY_ENTRY_BOOL("quirk-broken-port-ped");
+ props[prop_idx++] = PROPERTY_ENTRY_U16("num-hc-interrupters",
+ dwc->num_hc_interrupters);
+
if (prop_idx) {
- ret = platform_device_add_properties(xhci, props);
+ ret = device_create_managed_software_node(&xhci->dev, props, NULL);
if (ret) {
dev_err(dwc->dev, "failed to add properties to xHCI\n");
goto err;
}
}
+ ret = platform_device_add_data(xhci, &dwc3_xhci_plat_quirk,
+ sizeof(struct xhci_plat_priv));
+ if (ret)
+ goto err;
+
ret = platform_device_add(xhci);
if (ret) {
dev_err(dwc->dev, "failed to register xHCI device\n");
goto err;
}
+ if (dwc->sys_wakeup) {
+ /* Restore wakeup setting if switched from device */
+ device_wakeup_enable(dwc->sysdev);
+
+ /* Pass on wakeup setting to the new xhci platform device */
+ device_init_wakeup(&xhci->dev, true);
+ }
+
return 0;
err:
platform_device_put(xhci);
return ret;
}
+EXPORT_SYMBOL_GPL(dwc3_host_init);
void dwc3_host_exit(struct dwc3 *dwc)
{
+ if (dwc->sys_wakeup)
+ device_init_wakeup(&dwc->xhci->dev, false);
+
+ dwc3_enable_susphy(dwc, false);
platform_device_unregister(dwc->xhci);
+ dwc->xhci = NULL;
}
+EXPORT_SYMBOL_GPL(dwc3_host_exit);
generated by cgit (git 2.34.1) at 2025-12-25 17:00:47 +0000