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authorPeter Rosin <peda@axentia.se>2016-12-22 08:43:55 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-05 19:32:29 +0100
commit8f12dc24490bde0d604b8bdfca05ea4b06a624a7 (patch)
tree881e2d902e13b5d489cca3b2607541bcf78da0d6
parent674aea07e38200ea6f31ff6d5f200f0cf6cdb325 (diff)
downloadlinux-8f12dc24490bde0d604b8bdfca05ea4b06a624a7.tar.bz2
usb: ohci-at91: use descriptor-based gpio APIs correctly
The gpiod_get* function family does not want the -gpio suffix. Use devm_gpiod_get_index_optional instead of devm_gpiod_get_optional. The descriptor based APIs handle active high/low automatically. The vbus-gpios are output, request enable while getting the gpio. Don't try to get any vbus-gpios for ports outside num-ports. WTF? Big sigh. Fixes: 054d4b7b577d ("usb: ohci-at91: Use descriptor-based gpio APIs") Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/usb/host/ohci-at91.c24
1 files changed, 10 insertions, 14 deletions
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index be9e63836881..414e3c376dbb 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -43,7 +43,6 @@ struct at91_usbh_data {
struct gpio_desc *overcurrent_pin[AT91_MAX_USBH_PORTS];
u8 ports; /* number of ports on root hub */
u8 overcurrent_supported;
- u8 vbus_pin_active_low[AT91_MAX_USBH_PORTS];
u8 overcurrent_status[AT91_MAX_USBH_PORTS];
u8 overcurrent_changed[AT91_MAX_USBH_PORTS];
};
@@ -266,8 +265,7 @@ static void ohci_at91_usb_set_power(struct at91_usbh_data *pdata, int port, int
if (!valid_port(port))
return;
- gpiod_set_value(pdata->vbus_pin[port],
- pdata->vbus_pin_active_low[port] ^ enable);
+ gpiod_set_value(pdata->vbus_pin[port], enable);
}
static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port)
@@ -275,8 +273,7 @@ static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port)
if (!valid_port(port))
return -EINVAL;
- return gpiod_get_value(pdata->vbus_pin[port]) ^
- pdata->vbus_pin_active_low[port];
+ return gpiod_get_value(pdata->vbus_pin[port]);
}
/*
@@ -533,18 +530,17 @@ static int ohci_hcd_at91_drv_probe(struct platform_device *pdev)
pdata->ports = ports;
at91_for_each_port(i) {
- pdata->vbus_pin[i] = devm_gpiod_get_optional(&pdev->dev,
- "atmel,vbus-gpio",
- GPIOD_IN);
+ if (i >= pdata->ports)
+ break;
+
+ pdata->vbus_pin[i] =
+ devm_gpiod_get_index_optional(&pdev->dev, "atmel,vbus",
+ i, GPIOD_OUT_HIGH);
if (IS_ERR(pdata->vbus_pin[i])) {
err = PTR_ERR(pdata->vbus_pin[i]);
dev_err(&pdev->dev, "unable to claim gpio \"vbus\": %d\n", err);
continue;
}
-
- pdata->vbus_pin_active_low[i] = gpiod_get_value(pdata->vbus_pin[i]);
-
- ohci_at91_usb_set_power(pdata, i, 1);
}
at91_for_each_port(i) {
@@ -552,8 +548,8 @@ static int ohci_hcd_at91_drv_probe(struct platform_device *pdev)
break;
pdata->overcurrent_pin[i] =
- devm_gpiod_get_optional(&pdev->dev,
- "atmel,oc-gpio", GPIOD_IN);
+ devm_gpiod_get_index_optional(&pdev->dev, "atmel,oc",
+ i, GPIOD_IN);
if (IS_ERR(pdata->overcurrent_pin[i])) {
err = PTR_ERR(pdata->overcurrent_pin[i]);
dev_err(&pdev->dev, "unable to claim gpio \"overcurrent\": %d\n", err);