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net: mdio-gpio: Convert to use gpiod functions where possible

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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 <linux@roeck-us.net>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guenter Roeck 2017-01-11 12:59:50 -08:00 committed by David S. Miller
parent 08d9665cfe
commit 7e5fbd1e07
1 changed files with 21 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/net/phy/mdio-gpio.c
View File

@ -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);