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| author | Peter Rosin <peda@axentia.se> | 2016-12-22 08:43:55 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-05 19:32:29 +0100 |
| commit | 8f12dc24490bde0d604b8bdfca05ea4b06a624a7 (patch) | |
| tree | 881e2d902e13b5d489cca3b2607541bcf78da0d6 | |
| parent | 674aea07e38200ea6f31ff6d5f200f0cf6cdb325 (diff) | |
| download | linux-8f12dc24490bde0d604b8bdfca05ea4b06a624a7.tar.gz linux-8f12dc24490bde0d604b8bdfca05ea4b06a624a7.tar.bz2 linux-8f12dc24490bde0d604b8bdfca05ea4b06a624a7.zip | |
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.c | 24 |
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); |