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authorGuenter Roeck <linux@roeck-us.net>2017-01-11 12:59:51 -0800
committerDavid S. Miller <davem@davemloft.net>2017-01-12 15:05:10 -0500
commit52aab18ef54ba9e71444b1d289a4a78ea374423b (patch)
treee743c19ba1fab01b00957133a10418b0d069bb0e /drivers/net/phy
parent7e5fbd1e0700f1bdb94508f84ec2aeb01eed7b12 (diff)
downloadlinux-52aab18ef54ba9e71444b1d289a4a78ea374423b.tar.bz2
net: mdio-gpio: Use gpio subsystem to handle low-active pins
gpiod functions support handling low-active pins, so we can move thos code out of this driver into the gpio subsystem and simplify the code a bit. 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>
Diffstat (limited to 'drivers/net/phy')
-rw-r--r--drivers/net/phy/mdio-gpio.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c
index e62fcea2d945..7faa79b254ef 100644
--- a/drivers/net/phy/mdio-gpio.c
+++ b/drivers/net/phy/mdio-gpio.c
@@ -33,7 +33,6 @@
struct mdio_gpio_info {
struct mdiobb_ctrl ctrl;
struct gpio_desc *mdc, *mdio, *mdo;
- int mdc_active_low, mdio_active_low, mdo_active_low;
};
static void *mdio_gpio_of_get_data(struct platform_device *pdev)
@@ -80,13 +79,12 @@ 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.
*/
- gpiod_set_value(bitbang->mdo, 1 ^ bitbang->mdo_active_low);
+ gpiod_set_value(bitbang->mdo, 1);
return;
}
if (dir)
- gpiod_direction_output(bitbang->mdio,
- 1 ^ bitbang->mdio_active_low);
+ gpiod_direction_output(bitbang->mdio, 1);
else
gpiod_direction_input(bitbang->mdio);
}
@@ -96,7 +94,7 @@ static int mdio_get(struct mdiobb_ctrl *ctrl)
struct mdio_gpio_info *bitbang =
container_of(ctrl, struct mdio_gpio_info, ctrl);
- return gpiod_get_value(bitbang->mdio) ^ bitbang->mdio_active_low;
+ return gpiod_get_value(bitbang->mdio);
}
static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
@@ -105,9 +103,9 @@ static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
container_of(ctrl, struct mdio_gpio_info, ctrl);
if (bitbang->mdo)
- gpiod_set_value(bitbang->mdo, what ^ bitbang->mdo_active_low);
+ gpiod_set_value(bitbang->mdo, what);
else
- gpiod_set_value(bitbang->mdio, what ^ bitbang->mdio_active_low);
+ gpiod_set_value(bitbang->mdio, what);
}
static void mdc_set(struct mdiobb_ctrl *ctrl, int what)
@@ -115,7 +113,7 @@ static void mdc_set(struct mdiobb_ctrl *ctrl, int what)
struct mdio_gpio_info *bitbang =
container_of(ctrl, struct mdio_gpio_info, ctrl);
- gpiod_set_value(bitbang->mdc, what ^ bitbang->mdc_active_low);
+ gpiod_set_value(bitbang->mdc, what);
}
static struct mdiobb_ops mdio_gpio_ops = {
@@ -146,14 +144,18 @@ static struct mii_bus *mdio_gpio_bus_init(struct device *dev,
bitbang->ctrl.reset = pdata->reset;
mdc = pdata->mdc;
bitbang->mdc = gpio_to_desc(mdc);
- bitbang->mdc_active_low = pdata->mdc_active_low;
+ if (pdata->mdc_active_low)
+ mdc_flags = GPIOF_OUT_INIT_HIGH | GPIOF_ACTIVE_LOW;
mdio = pdata->mdio;
bitbang->mdio = gpio_to_desc(mdio);
- bitbang->mdio_active_low = pdata->mdio_active_low;
+ if (pdata->mdio_active_low)
+ mdio_flags |= GPIOF_ACTIVE_LOW;
mdo = pdata->mdo;
- if (mdo)
+ if (mdo) {
bitbang->mdo = gpio_to_desc(mdo);
- bitbang->mdo_active_low = pdata->mdo_active_low;
+ if (pdata->mdo_active_low)
+ mdo_flags = GPIOF_OUT_INIT_LOW | GPIOF_ACTIVE_LOW;
+ }
new_bus = alloc_mdio_bitbang(&bitbang->ctrl);
if (!new_bus)