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path: root/drivers/usb/host/ehci-mv.c
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Diffstat (limited to 'drivers/usb/host/ehci-mv.c')
-rw-r--r--drivers/usb/host/ehci-mv.c92
1 files changed, 34 insertions, 58 deletions
diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c
index 6c56297ea16..08147c35f83 100644
--- a/drivers/usb/host/ehci-mv.c
+++ b/drivers/usb/host/ehci-mv.c
@@ -33,25 +33,17 @@ struct ehci_hcd_mv {
struct mv_usb_platform_data *pdata;
- /* clock source and total clock number */
- unsigned int clknum;
- struct clk *clk[0];
+ struct clk *clk;
};
static void ehci_clock_enable(struct ehci_hcd_mv *ehci_mv)
{
- unsigned int i;
-
- for (i = 0; i < ehci_mv->clknum; i++)
- clk_prepare_enable(ehci_mv->clk[i]);
+ clk_prepare_enable(ehci_mv->clk);
}
static void ehci_clock_disable(struct ehci_hcd_mv *ehci_mv)
{
- unsigned int i;
-
- for (i = 0; i < ehci_mv->clknum; i++)
- clk_disable_unprepare(ehci_mv->clk[i]);
+ clk_disable_unprepare(ehci_mv->clk);
}
static int mv_ehci_enable(struct ehci_hcd_mv *ehci_mv)
@@ -104,7 +96,7 @@ static const struct hc_driver mv_ehci_hc_driver = {
* generic hardware linkage
*/
.irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
+ .flags = HCD_MEMORY | HCD_USB2 | HCD_BH,
/*
* basic lifecycle operations
@@ -139,14 +131,13 @@ static const struct hc_driver mv_ehci_hc_driver = {
static int mv_ehci_probe(struct platform_device *pdev)
{
- struct mv_usb_platform_data *pdata = pdev->dev.platform_data;
+ struct mv_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct usb_hcd *hcd;
struct ehci_hcd *ehci;
struct ehci_hcd_mv *ehci_mv;
struct resource *r;
- int clk_i, retval = -ENODEV;
+ int retval = -ENODEV;
u32 offset;
- size_t size;
if (!pdata) {
dev_err(&pdev->dev, "missing platform_data\n");
@@ -160,8 +151,7 @@ static int mv_ehci_probe(struct platform_device *pdev)
if (!hcd)
return -ENOMEM;
- size = sizeof(*ehci_mv) + sizeof(struct clk *) * pdata->clknum;
- ehci_mv = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
+ ehci_mv = devm_kzalloc(&pdev->dev, sizeof(*ehci_mv), GFP_KERNEL);
if (ehci_mv == NULL) {
dev_err(&pdev->dev, "cannot allocate ehci_hcd_mv\n");
retval = -ENOMEM;
@@ -172,52 +162,43 @@ static int mv_ehci_probe(struct platform_device *pdev)
ehci_mv->pdata = pdata;
ehci_mv->hcd = hcd;
- ehci_mv->clknum = pdata->clknum;
- for (clk_i = 0; clk_i < ehci_mv->clknum; clk_i++) {
- ehci_mv->clk[clk_i] =
- devm_clk_get(&pdev->dev, pdata->clkname[clk_i]);
- if (IS_ERR(ehci_mv->clk[clk_i])) {
- dev_err(&pdev->dev, "error get clck \"%s\"\n",
- pdata->clkname[clk_i]);
- retval = PTR_ERR(ehci_mv->clk[clk_i]);
- goto err_clear_drvdata;
- }
+ ehci_mv->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(ehci_mv->clk)) {
+ dev_err(&pdev->dev, "error getting clock\n");
+ retval = PTR_ERR(ehci_mv->clk);
+ goto err_put_hcd;
}
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phyregs");
if (r == NULL) {
dev_err(&pdev->dev, "no phy I/O memory resource defined\n");
retval = -ENODEV;
- goto err_clear_drvdata;
+ goto err_put_hcd;
}
- ehci_mv->phy_regs = devm_ioremap(&pdev->dev, r->start,
- resource_size(r));
- if (ehci_mv->phy_regs == 0) {
- dev_err(&pdev->dev, "failed to map phy I/O memory\n");
- retval = -EFAULT;
- goto err_clear_drvdata;
+ ehci_mv->phy_regs = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(ehci_mv->phy_regs)) {
+ retval = PTR_ERR(ehci_mv->phy_regs);
+ goto err_put_hcd;
}
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "capregs");
if (!r) {
dev_err(&pdev->dev, "no I/O memory resource defined\n");
retval = -ENODEV;
- goto err_clear_drvdata;
+ goto err_put_hcd;
}
- ehci_mv->cap_regs = devm_ioremap(&pdev->dev, r->start,
- resource_size(r));
- if (ehci_mv->cap_regs == NULL) {
- dev_err(&pdev->dev, "failed to map I/O memory\n");
- retval = -EFAULT;
- goto err_clear_drvdata;
+ ehci_mv->cap_regs = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(ehci_mv->cap_regs)) {
+ retval = PTR_ERR(ehci_mv->cap_regs);
+ goto err_put_hcd;
}
retval = mv_ehci_enable(ehci_mv);
if (retval) {
dev_err(&pdev->dev, "init phy error %d\n", retval);
- goto err_clear_drvdata;
+ goto err_put_hcd;
}
offset = readl(ehci_mv->cap_regs) & CAPLENGTH_MASK;
@@ -225,7 +206,7 @@ static int mv_ehci_probe(struct platform_device *pdev)
(void __iomem *) ((unsigned long) ehci_mv->cap_regs + offset);
hcd->rsrc_start = r->start;
- hcd->rsrc_len = r->end - r->start + 1;
+ hcd->rsrc_len = resource_size(r);
hcd->regs = ehci_mv->op_regs;
hcd->irq = platform_get_irq(pdev, 0);
@@ -240,12 +221,16 @@ static int mv_ehci_probe(struct platform_device *pdev)
ehci_mv->mode = pdata->mode;
if (ehci_mv->mode == MV_USB_MODE_OTG) {
-#ifdef CONFIG_USB_OTG_UTILS
ehci_mv->otg = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
- if (IS_ERR_OR_NULL(ehci_mv->otg)) {
- dev_err(&pdev->dev,
- "unable to find transceiver\n");
- retval = -ENODEV;
+ if (IS_ERR(ehci_mv->otg)) {
+ retval = PTR_ERR(ehci_mv->otg);
+
+ if (retval == -ENXIO)
+ dev_info(&pdev->dev, "MV_USB_MODE_OTG "
+ "must have CONFIG_USB_PHY enabled\n");
+ else
+ dev_err(&pdev->dev,
+ "unable to find transceiver\n");
goto err_disable_clk;
}
@@ -258,11 +243,6 @@ static int mv_ehci_probe(struct platform_device *pdev)
}
/* otg will enable clock before use as host */
mv_ehci_disable(ehci_mv);
-#else
- dev_info(&pdev->dev, "MV_USB_MODE_OTG "
- "must have CONFIG_USB_OTG_UTILS enabled\n");
- goto err_disable_clk;
-#endif
} else {
if (pdata->set_vbus)
pdata->set_vbus(1);
@@ -273,6 +253,7 @@ static int mv_ehci_probe(struct platform_device *pdev)
"failed to add hcd with err %d\n", retval);
goto err_set_vbus;
}
+ device_wakeup_enable(hcd->self.controller);
}
if (pdata->private_init)
@@ -290,8 +271,6 @@ err_set_vbus:
pdata->set_vbus(0);
err_disable_clk:
mv_ehci_disable(ehci_mv);
-err_clear_drvdata:
- platform_set_drvdata(pdev, NULL);
err_put_hcd:
usb_put_hcd(hcd);
@@ -302,7 +281,6 @@ static int mv_ehci_remove(struct platform_device *pdev)
{
struct ehci_hcd_mv *ehci_mv = platform_get_drvdata(pdev);
struct usb_hcd *hcd = ehci_mv->hcd;
- int clk_i;
if (hcd->rh_registered)
usb_remove_hcd(hcd);
@@ -317,8 +295,6 @@ static int mv_ehci_remove(struct platform_device *pdev)
mv_ehci_disable(ehci_mv);
}
- platform_set_drvdata(pdev, NULL);
-
usb_put_hcd(hcd);
return 0;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 20:00:01 +0000