[PATCH net-next 2/3] net: mdio-gpio: Convert to use gpiod functions where possible

[Florian Fainelli]

From: Guenter Roeck <li...@roeck-us.net>

Using gpiod functions lets us use functionality which is not available
with gpio functions.

There is no gpiod function to match devm_gpio_request_one, so leave it
in place and use gpio_to_desc() to convert absolute pin numbers to gpio
descriptors.

Signed-off-by: Guenter Roeck <li...@roeck-us.net>
Signed-off-by: Florian Fainelli <f.faine...@gmail.com>
---
 drivers/net/phy/mdio-gpio.c | 43 +++++++++++++++++++++----------------------
 1 file changed, 21 insertions(+), 22 deletions(-)

diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c
index f6e773256c82..e62fcea2d945 100644
--- a/drivers/net/phy/mdio-gpio.c
+++ b/drivers/net/phy/mdio-gpio.c
@@ -32,7 +32,7 @@
 
 struct mdio_gpio_info {
        struct mdiobb_ctrl ctrl;
-       int mdc, mdio, mdo;
+       struct gpio_desc *mdc, *mdio, *mdo;
        int mdc_active_low, mdio_active_low, mdo_active_low;
 };
 
@@ -80,16 +80,15 @@ static void mdio_dir(struct mdiobb_ctrl *ctrl, int dir)
                 * assume the pin serves as pull-up. If direction is
                 * output, the default value is high.
                 */
-               gpio_set_value_cansleep(bitbang->mdo,
-                                       1 ^ bitbang->mdo_active_low);
+               gpiod_set_value(bitbang->mdo, 1 ^ bitbang->mdo_active_low);
                return;
        }
 
        if (dir)
-               gpio_direction_output(bitbang->mdio,
-                                     1 ^ bitbang->mdio_active_low);
+               gpiod_direction_output(bitbang->mdio,
+                                      1 ^ bitbang->mdio_active_low);
        else
-               gpio_direction_input(bitbang->mdio);
+               gpiod_direction_input(bitbang->mdio);
 }
 
 static int mdio_get(struct mdiobb_ctrl *ctrl)
@@ -97,8 +96,7 @@ static int mdio_get(struct mdiobb_ctrl *ctrl)
        struct mdio_gpio_info *bitbang =
                container_of(ctrl, struct mdio_gpio_info, ctrl);
 
-       return gpio_get_value_cansleep(bitbang->mdio) ^
-               bitbang->mdio_active_low;
+       return gpiod_get_value(bitbang->mdio) ^ bitbang->mdio_active_low;
 }
 
 static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
@@ -107,11 +105,9 @@ static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
                container_of(ctrl, struct mdio_gpio_info, ctrl);
 
        if (bitbang->mdo)
-               gpio_set_value_cansleep(bitbang->mdo,
-                                       what ^ bitbang->mdo_active_low);
+               gpiod_set_value(bitbang->mdo, what ^ bitbang->mdo_active_low);
        else
-               gpio_set_value_cansleep(bitbang->mdio,
-                                       what ^ bitbang->mdio_active_low);
+               gpiod_set_value(bitbang->mdio, what ^ bitbang->mdio_active_low);
 }
 
 static void mdc_set(struct mdiobb_ctrl *ctrl, int what)
@@ -119,7 +115,7 @@ static void mdc_set(struct mdiobb_ctrl *ctrl, int what)
        struct mdio_gpio_info *bitbang =
                container_of(ctrl, struct mdio_gpio_info, ctrl);
 
-       gpio_set_value_cansleep(bitbang->mdc, what ^ bitbang->mdc_active_low);
+       gpiod_set_value(bitbang->mdc, what ^ bitbang->mdc_active_low);
 }
 
 static struct mdiobb_ops mdio_gpio_ops = {
@@ -137,6 +133,7 @@ static struct mii_bus *mdio_gpio_bus_init(struct device 
*dev,
        struct mii_bus *new_bus;
        struct mdio_gpio_info *bitbang;
        int i;
+       int mdc, mdio, mdo;
        unsigned long mdc_flags = GPIOF_OUT_INIT_LOW;
        unsigned long mdio_flags = GPIOF_DIR_IN;
        unsigned long mdo_flags = GPIOF_OUT_INIT_HIGH;
@@ -147,11 +144,15 @@ static struct mii_bus *mdio_gpio_bus_init(struct device 
*dev,
 
        bitbang->ctrl.ops = &mdio_gpio_ops;
        bitbang->ctrl.reset = pdata->reset;
-       bitbang->mdc = pdata->mdc;
+       mdc = pdata->mdc;
+       bitbang->mdc = gpio_to_desc(mdc);
        bitbang->mdc_active_low = pdata->mdc_active_low;
-       bitbang->mdio = pdata->mdio;
+       mdio = pdata->mdio;
+       bitbang->mdio = gpio_to_desc(mdio);
        bitbang->mdio_active_low = pdata->mdio_active_low;
-       bitbang->mdo = pdata->mdo;
+       mdo = pdata->mdo;
+       if (mdo)
+               bitbang->mdo = gpio_to_desc(mdo);
        bitbang->mdo_active_low = pdata->mdo_active_low;
 
        new_bus = alloc_mdio_bitbang(&bitbang->ctrl);
@@ -177,16 +178,14 @@ static struct mii_bus *mdio_gpio_bus_init(struct device 
*dev,
        else
                strncpy(new_bus->id, "gpio", MII_BUS_ID_SIZE);
 
-       if (devm_gpio_request_one(dev, bitbang->mdc, mdc_flags, "mdc"))
+       if (devm_gpio_request_one(dev, mdc, mdc_flags, "mdc"))
                goto out_free_bus;
 
-       if (devm_gpio_request_one(dev, bitbang->mdio, mdio_flags, "mdio"))
+       if (devm_gpio_request_one(dev, mdio, mdio_flags, "mdio"))
                goto out_free_bus;
 
-       if (bitbang->mdo) {
-               if (devm_gpio_request_one(dev, bitbang->mdo, mdo_flags, "mdo"))
-                       goto out_free_bus;
-       }
+       if (mdo && devm_gpio_request_one(dev, mdo, mdo_flags, "mdo"))
+               goto out_free_bus;
 
        dev_set_drvdata(dev, new_bus);
 
-- 
2.9.3