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phy-sun4i-usb: Simplify missing dr_mode handling 

If we cannot get dr_mode or no id gpio is specified simply assume
peripheral mode, as this is always safe.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Hans de Goede 2016-09-07 22:20:39 +02:00 committed by Kishon Vijay Abraham I
parent 36f9159ba9
commit 5f90d31cab
1 changed files with 14 additions and 28 deletions
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42
drivers/phy/phy-sun4i-usb.c
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@ -124,7 +124,6 @@ struct sun4i_usb_phy_data {
bool regulator_on; bool regulator_on;
int index; int index;
} phys[MAX_PHYS]; } phys[MAX_PHYS];
int first_phy;
/* phy0 / otg related variables */ /* phy0 / otg related variables */
struct extcon_dev *extcon; struct extcon_dev *extcon;
bool phy0_init; bool phy0_init;
@ -326,7 +325,10 @@ static int sun4i_usb_phy0_get_id_det(struct sun4i_usb_phy_data *data)
{ {
switch (data->dr_mode) { switch (data->dr_mode) {
case USB_DR_MODE_OTG: case USB_DR_MODE_OTG:
return gpiod_get_value_cansleep(data->id_det_gpio); if (data->id_det_gpio)
return gpiod_get_value_cansleep(data->id_det_gpio);
else
return 1; /* Fallback to peripheral mode */
case USB_DR_MODE_HOST: case USB_DR_MODE_HOST:
return 0; return 0;
case USB_DR_MODE_PERIPHERAL: case USB_DR_MODE_PERIPHERAL:
@ -539,8 +541,7 @@ static struct phy *sun4i_usb_phy_xlate(struct device *dev,
{ {
struct sun4i_usb_phy_data *data = dev_get_drvdata(dev); struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
if (args->args[0] < data->first_phy || if (args->args[0] >= data->cfg->num_phys)
args->args[0] >= data->cfg->num_phys)
return ERR_PTR(-ENODEV); return ERR_PTR(-ENODEV);
return data->phys[args->args[0]].phy; return data->phys[args->args[0]].phy;
@ -615,33 +616,18 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
} }
data->dr_mode = of_usb_get_dr_mode_by_phy(np, 0); data->dr_mode = of_usb_get_dr_mode_by_phy(np, 0);
switch (data->dr_mode) {
case USB_DR_MODE_OTG:
/* otg without id_det makes no sense, and is not supported */
if (!data->id_det_gpio) {
dev_err(dev, "usb0_id_det missing or invalid\n");
return -ENODEV;
}
/* fall through */
case USB_DR_MODE_HOST:
case USB_DR_MODE_PERIPHERAL:
data->extcon = devm_extcon_dev_allocate(dev,
sun4i_usb_phy0_cable);
if (IS_ERR(data->extcon))
return PTR_ERR(data->extcon);
ret = devm_extcon_dev_register(dev, data->extcon); data->extcon = devm_extcon_dev_allocate(dev, sun4i_usb_phy0_cable);
if (ret) { if (IS_ERR(data->extcon))
dev_err(dev, "failed to register extcon: %d\n", ret); return PTR_ERR(data->extcon);
return ret;
} ret = devm_extcon_dev_register(dev, data->extcon);
break; if (ret) {
default: dev_err(dev, "failed to register extcon: %d\n", ret);
dev_info(dev, "dr_mode unknown, not registering usb phy0\n"); return ret;
data->first_phy = 1;
} }
for (i = data->first_phy; i < data->cfg->num_phys; i++) { for (i = 0; i < data->cfg->num_phys; i++) {
struct sun4i_usb_phy *phy = data->phys + i; struct sun4i_usb_phy *phy = data->phys + i;
char name[16]; char name[16];