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Merge branch 'master' of git://git.denx.de/u-boot-usb

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This commit is contained in:
Tom Rini 2018-09-16 10:29:47 -04:00
commit ad17b970f7
1 changed files with 61 additions and 1 deletions
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62
drivers/usb/host/ehci-generic.c
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@ -11,6 +11,7 @@
#include <asm/io.h> #include <asm/io.h>
#include <dm.h> #include <dm.h>
#include "ehci.h" #include "ehci.h"
#include <power/regulator.h>
/* /*
* Even though here we don't explicitly use "struct ehci_ctrl" * Even though here we don't explicitly use "struct ehci_ctrl"
@ -22,10 +23,56 @@ struct generic_ehci {
struct clk *clocks; struct clk *clocks;
struct reset_ctl *resets; struct reset_ctl *resets;
struct phy phy; struct phy phy;
#ifdef CONFIG_DM_REGULATOR
struct udevice *vbus_supply;
#endif
int clock_count; int clock_count;
int reset_count; int reset_count;
}; };
#ifdef CONFIG_DM_REGULATOR
static int ehci_enable_vbus_supply(struct udevice *dev)
{
struct generic_ehci *priv = dev_get_priv(dev);
int ret;
ret = device_get_supply_regulator(dev, "vbus-supply",
&priv->vbus_supply);
if (ret && ret != -ENOENT)
return ret;
if (priv->vbus_supply) {
ret = regulator_set_enable(priv->vbus_supply, true);
if (ret) {
dev_err(dev, "Error enabling VBUS supply\n");
return ret;
}
} else {
dev_dbg(dev, "No vbus supply\n");
}
return 0;
}
static int ehci_disable_vbus_supply(struct generic_ehci *priv)
{
if (priv->vbus_supply)
return regulator_set_enable(priv->vbus_supply, false);
else
return 0;
}
#else
static int ehci_enable_vbus_supply(struct udevice *dev)
{
return 0;
}
static int ehci_disable_vbus_supply(struct generic_ehci *priv)
{
return 0;
}
#endif
static int ehci_usb_probe(struct udevice *dev) static int ehci_usb_probe(struct udevice *dev)
{ {
struct generic_ehci *priv = dev_get_priv(dev); struct generic_ehci *priv = dev_get_priv(dev);
@ -95,10 +142,14 @@ static int ehci_usb_probe(struct udevice *dev)
} }
} }
err = ehci_setup_phy(dev, &priv->phy, 0); err = ehci_enable_vbus_supply(dev);
if (err) if (err)
goto reset_err; goto reset_err;
err = ehci_setup_phy(dev, &priv->phy, 0);
if (err)
goto regulator_err;
hccr = map_physmem(dev_read_addr(dev), 0x100, MAP_NOCACHE); hccr = map_physmem(dev_read_addr(dev), 0x100, MAP_NOCACHE);
hcor = (struct ehci_hcor *)((uintptr_t)hccr + hcor = (struct ehci_hcor *)((uintptr_t)hccr +
HC_LENGTH(ehci_readl(&hccr->cr_capbase))); HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
@ -114,6 +165,11 @@ phy_err:
if (ret) if (ret)
dev_err(dev, "failed to shutdown usb phy\n"); dev_err(dev, "failed to shutdown usb phy\n");
regulator_err:
ret = ehci_disable_vbus_supply(priv);
if (ret)
dev_err(dev, "failed to disable VBUS supply\n");
reset_err: reset_err:
ret = reset_release_all(priv->resets, priv->reset_count); ret = reset_release_all(priv->resets, priv->reset_count);
if (ret) if (ret)
@ -139,6 +195,10 @@ static int ehci_usb_remove(struct udevice *dev)
if (ret) if (ret)
return ret; return ret;
ret = ehci_disable_vbus_supply(priv);
if (ret)
return ret;
ret = reset_release_all(priv->resets, priv->reset_count); ret = reset_release_all(priv->resets, priv->reset_count);
if (ret) if (ret)
return ret; return ret;