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path: root/drivers/usb/dwc3
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Diffstat (limited to 'drivers/usb/dwc3')
-rw-r--r--drivers/usb/dwc3/core.h9
-rw-r--r--drivers/usb/dwc3/dwc3-meson-g12a.c17
-rw-r--r--drivers/usb/dwc3/dwc3-qcom.c15
-rw-r--r--drivers/usb/dwc3/gadget.c59
-rw-r--r--drivers/usb/dwc3/host.c45
5 files changed, 102 insertions, 43 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 5c491d0a19d7..e1cc3f7398fb 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -153,6 +153,7 @@
#define DWC3_DGCMDPAR 0xc710
#define DWC3_DGCMD 0xc714
#define DWC3_DALEPENA 0xc720
+#define DWC3_DCFG1 0xc740 /* DWC_usb32 only */
#define DWC3_DEP_BASE(n) (0xc800 + ((n) * 0x10))
#define DWC3_DEPCMDPAR2 0x00
@@ -382,6 +383,7 @@
/* Global HWPARAMS9 Register */
#define DWC3_GHWPARAMS9_DEV_TXF_FLUSH_BYPASS BIT(0)
+#define DWC3_GHWPARAMS9_DEV_MST BIT(1)
/* Global Frame Length Adjustment Register */
#define DWC3_GFLADJ_30MHZ_SDBND_SEL BIT(7)
@@ -558,6 +560,9 @@
/* The EP number goes 0..31 so ep0 is always out and ep1 is always in */
#define DWC3_DALEPENA_EP(n) BIT(n)
+/* DWC_usb32 DCFG1 config */
+#define DWC3_DCFG1_DIS_MST_ENH BIT(1)
+
#define DWC3_DEPCMD_TYPE_CONTROL 0
#define DWC3_DEPCMD_TYPE_ISOC 1
#define DWC3_DEPCMD_TYPE_BULK 2
@@ -888,6 +893,10 @@ struct dwc3_hwparams {
/* HWPARAMS7 */
#define DWC3_RAM1_DEPTH(n) ((n) & 0xffff)
+/* HWPARAMS9 */
+#define DWC3_MST_CAPABLE(p) (!!((p)->hwparams9 & \
+ DWC3_GHWPARAMS9_DEV_MST))
+
/**
* struct dwc3_request - representation of a transfer request
* @request: struct usb_request to be transferred
diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c
index d0f9b7c296b0..bd814df3bf8b 100644
--- a/drivers/usb/dwc3/dwc3-meson-g12a.c
+++ b/drivers/usb/dwc3/dwc3-meson-g12a.c
@@ -755,16 +755,16 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
ret = dwc3_meson_g12a_get_phys(priv);
if (ret)
- goto err_disable_clks;
+ goto err_rearm;
ret = priv->drvdata->setup_regmaps(priv, base);
if (ret)
- goto err_disable_clks;
+ goto err_rearm;
if (priv->vbus) {
ret = regulator_enable(priv->vbus);
if (ret)
- goto err_disable_clks;
+ goto err_rearm;
}
/* Get dr_mode */
@@ -825,6 +825,9 @@ err_disable_regulator:
if (priv->vbus)
regulator_disable(priv->vbus);
+err_rearm:
+ reset_control_rearm(priv->reset);
+
err_disable_clks:
clk_bulk_disable_unprepare(priv->drvdata->num_clks,
priv->drvdata->clks);
@@ -852,6 +855,8 @@ static int dwc3_meson_g12a_remove(struct platform_device *pdev)
pm_runtime_put_noidle(dev);
pm_runtime_set_suspended(dev);
+ reset_control_rearm(priv->reset);
+
clk_bulk_disable_unprepare(priv->drvdata->num_clks,
priv->drvdata->clks);
@@ -892,7 +897,7 @@ static int __maybe_unused dwc3_meson_g12a_suspend(struct device *dev)
phy_exit(priv->phys[i]);
}
- reset_control_assert(priv->reset);
+ reset_control_rearm(priv->reset);
return 0;
}
@@ -902,7 +907,9 @@ static int __maybe_unused dwc3_meson_g12a_resume(struct device *dev)
struct dwc3_meson_g12a *priv = dev_get_drvdata(dev);
int i, ret;
- reset_control_deassert(priv->reset);
+ ret = reset_control_reset(priv->reset);
+ if (ret)
+ return ret;
ret = priv->drvdata->usb_init(priv);
if (ret)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index 3cb01cdd02c2..6cba990da32e 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -598,8 +598,10 @@ static int dwc3_qcom_acpi_register_core(struct platform_device *pdev)
qcom->dwc3->dev.coherent_dma_mask = dev->coherent_dma_mask;
child_res = kcalloc(2, sizeof(*child_res), GFP_KERNEL);
- if (!child_res)
+ if (!child_res) {
+ platform_device_put(qcom->dwc3);
return -ENOMEM;
+ }
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
@@ -637,9 +639,13 @@ static int dwc3_qcom_acpi_register_core(struct platform_device *pdev)
if (ret) {
dev_err(&pdev->dev, "failed to add device\n");
device_remove_software_node(&qcom->dwc3->dev);
+ goto out;
}
+ kfree(child_res);
+ return 0;
out:
+ platform_device_put(qcom->dwc3);
kfree(child_res);
return ret;
}
@@ -769,9 +775,12 @@ static int dwc3_qcom_probe(struct platform_device *pdev)
if (qcom->acpi_pdata->is_urs) {
qcom->urs_usb = dwc3_qcom_create_urs_usb_platdev(dev);
- if (!qcom->urs_usb) {
+ if (IS_ERR_OR_NULL(qcom->urs_usb)) {
dev_err(dev, "failed to create URS USB platdev\n");
- return -ENODEV;
+ if (!qcom->urs_usb)
+ return -ENODEV;
+ else
+ return PTR_ERR(qcom->urs_usb);
}
}
}
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 7e3db00e9759..520031ba38aa 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -331,9 +331,17 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
}
}
- dwc3_writel(dep->regs, DWC3_DEPCMDPAR0, params->param0);
- dwc3_writel(dep->regs, DWC3_DEPCMDPAR1, params->param1);
- dwc3_writel(dep->regs, DWC3_DEPCMDPAR2, params->param2);
+ /*
+ * For some commands such as Update Transfer command, DEPCMDPARn
+ * registers are reserved. Since the driver often sends Update Transfer
+ * command, don't write to DEPCMDPARn to avoid register write delays and
+ * improve performance.
+ */
+ if (DWC3_DEPCMD_CMD(cmd) != DWC3_DEPCMD_UPDATETRANSFER) {
+ dwc3_writel(dep->regs, DWC3_DEPCMDPAR0, params->param0);
+ dwc3_writel(dep->regs, DWC3_DEPCMDPAR1, params->param1);
+ dwc3_writel(dep->regs, DWC3_DEPCMDPAR2, params->param2);
+ }
/*
* Synopsys Databook 2.60a states in section 6.3.2.5.6 of that if we're
@@ -357,6 +365,12 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
cmd |= DWC3_DEPCMD_CMDACT;
dwc3_writel(dep->regs, DWC3_DEPCMD, cmd);
+
+ if (!(cmd & DWC3_DEPCMD_CMDACT)) {
+ ret = 0;
+ goto skip_status;
+ }
+
do {
reg = dwc3_readl(dep->regs, DWC3_DEPCMD);
if (!(reg & DWC3_DEPCMD_CMDACT)) {
@@ -398,6 +412,7 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
cmd_status = -ETIMEDOUT;
}
+skip_status:
trace_dwc3_gadget_ep_cmd(dep, cmd, params, cmd_status);
if (DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_STARTTRANSFER) {
@@ -1260,12 +1275,17 @@ static void __dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_trb *trb,
trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;
}
+ /* All TRBs setup for MST must set CSP=1 when LST=0 */
+ if (dep->stream_capable && DWC3_MST_CAPABLE(&dwc->hwparams))
+ trb->ctrl |= DWC3_TRB_CTRL_CSP;
+
if ((!no_interrupt && !chain) || must_interrupt)
trb->ctrl |= DWC3_TRB_CTRL_IOC;
if (chain)
trb->ctrl |= DWC3_TRB_CTRL_CHN;
- else if (dep->stream_capable && is_last)
+ else if (dep->stream_capable && is_last &&
+ !DWC3_MST_CAPABLE(&dwc->hwparams))
trb->ctrl |= DWC3_TRB_CTRL_LST;
if (usb_endpoint_xfer_bulk(dep->endpoint.desc) && dep->stream_capable)
@@ -1513,7 +1533,8 @@ static int dwc3_prepare_trbs(struct dwc3_ep *dep)
* burst capability may try to read and use TRBs beyond the
* active transfer instead of stopping.
*/
- if (dep->stream_capable && req->request.is_last)
+ if (dep->stream_capable && req->request.is_last &&
+ !DWC3_MST_CAPABLE(&dep->dwc->hwparams))
return ret;
}
@@ -1546,7 +1567,8 @@ static int dwc3_prepare_trbs(struct dwc3_ep *dep)
* burst capability may try to read and use TRBs beyond the
* active transfer instead of stopping.
*/
- if (dep->stream_capable && req->request.is_last)
+ if (dep->stream_capable && req->request.is_last &&
+ !DWC3_MST_CAPABLE(&dwc->hwparams))
return ret;
}
@@ -1623,7 +1645,8 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep)
return ret;
}
- if (dep->stream_capable && req->request.is_last)
+ if (dep->stream_capable && req->request.is_last &&
+ !DWC3_MST_CAPABLE(&dep->dwc->hwparams))
dep->flags |= DWC3_EP_WAIT_TRANSFER_COMPLETE;
return 0;
@@ -2638,6 +2661,13 @@ static int __dwc3_gadget_start(struct dwc3 *dwc)
reg |= DWC3_DCFG_IGNSTRMPP;
dwc3_writel(dwc->regs, DWC3_DCFG, reg);
+ /* Enable MST by default if the device is capable of MST */
+ if (DWC3_MST_CAPABLE(&dwc->hwparams)) {
+ reg = dwc3_readl(dwc->regs, DWC3_DCFG1);
+ reg &= ~DWC3_DCFG1_DIS_MST_ENH;
+ dwc3_writel(dwc->regs, DWC3_DCFG1, reg);
+ }
+
/* Start with SuperSpeed Default */
dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);
@@ -3437,7 +3467,8 @@ static void dwc3_gadget_endpoint_stream_event(struct dwc3_ep *dep,
case DEPEVT_STREAM_NOSTREAM:
if ((dep->flags & DWC3_EP_IGNORE_NEXT_NOSTREAM) ||
!(dep->flags & DWC3_EP_FORCE_RESTART_STREAM) ||
- !(dep->flags & DWC3_EP_WAIT_TRANSFER_COMPLETE))
+ (!DWC3_MST_CAPABLE(&dwc->hwparams) &&
+ !(dep->flags & DWC3_EP_WAIT_TRANSFER_COMPLETE)))
break;
/*
@@ -4067,7 +4098,6 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3_event_buffer *evt)
struct dwc3 *dwc = evt->dwc;
irqreturn_t ret = IRQ_NONE;
int left;
- u32 reg;
left = evt->count;
@@ -4099,9 +4129,8 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3_event_buffer *evt)
ret = IRQ_HANDLED;
/* Unmask interrupt */
- reg = dwc3_readl(dwc->regs, DWC3_GEVNTSIZ(0));
- reg &= ~DWC3_GEVNTSIZ_INTMASK;
- dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0), reg);
+ dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0),
+ DWC3_GEVNTSIZ_SIZE(evt->length));
if (dwc->imod_interval) {
dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), DWC3_GEVNTCOUNT_EHB);
@@ -4130,7 +4159,6 @@ static irqreturn_t dwc3_check_event_buf(struct dwc3_event_buffer *evt)
struct dwc3 *dwc = evt->dwc;
u32 amount;
u32 count;
- u32 reg;
if (pm_runtime_suspended(dwc->dev)) {
pm_runtime_get(dwc->dev);
@@ -4157,9 +4185,8 @@ static irqreturn_t dwc3_check_event_buf(struct dwc3_event_buffer *evt)
evt->flags |= DWC3_EVENT_PENDING;
/* Mask interrupt */
- reg = dwc3_readl(dwc->regs, DWC3_GEVNTSIZ(0));
- reg |= DWC3_GEVNTSIZ_INTMASK;
- dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0), reg);
+ dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0),
+ DWC3_GEVNTSIZ_INTMASK | DWC3_GEVNTSIZ_SIZE(evt->length));
amount = min(count, evt->length - evt->lpos);
memcpy(evt->cache + evt->lpos, evt->buf + evt->lpos, amount);
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index f29a264635aa..eda871973d6c 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -8,32 +8,55 @@
*/
#include <linux/acpi.h>
+#include <linux/irq.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include "core.h"
+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)
+ if (irq > 0) {
+ dwc3_host_fill_xhci_irq_res(dwc, irq, NULL);
goto out;
+ }
if (!irq)
irq = -EINVAL;
@@ -47,28 +70,12 @@ int dwc3_host_init(struct dwc3 *dwc)
struct property_entry props[4];
struct platform_device *xhci;
int ret, irq;
- struct resource *res;
- struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
int prop_idx = 0;
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");
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-12 00:56:03 +0300