p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net: mdio-gpio: support access that may sleep 

Some systems using mdio-gpio may use gpio on message based busses, which
require sleeping (e.g. gpio from an I2C I/O expander).

Since this driver does not use IRQ handler, it is safe to use the
_cansleep suffixed gpio accessors.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2015-04-22 13:06:54 -04:00 committed by David S. Miller
parent b357a364c5
commit 2d6c9091ab
1 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/phy/mdio-gpio.c
View File

@ -80,7 +80,8 @@ 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(bitbang->mdo, 1 ^ bitbang->mdo_active_low);
gpio_set_value_cansleep(bitbang->mdo,
1 ^ bitbang->mdo_active_low);
return;
}
@ -96,7 +97,8 @@ 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(bitbang->mdio) ^ bitbang->mdio_active_low;
return gpio_get_value_cansleep(bitbang->mdio) ^
bitbang->mdio_active_low;
}
static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
@ -105,9 +107,11 @@ static void mdio_set(struct mdiobb_ctrl *ctrl, int what)
container_of(ctrl, struct mdio_gpio_info, ctrl);
if (bitbang->mdo)
gpio_set_value(bitbang->mdo, what ^ bitbang->mdo_active_low);
gpio_set_value_cansleep(bitbang->mdo,
what ^ bitbang->mdo_active_low);
else
gpio_set_value(bitbang->mdio, what ^ bitbang->mdio_active_low);
gpio_set_value_cansleep(bitbang->mdio,
what ^ bitbang->mdio_active_low);
}
static void mdc_set(struct mdiobb_ctrl *ctrl, int what)
@ -115,7 +119,7 @@ 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(bitbang->mdc, what ^ bitbang->mdc_active_low);
gpio_set_value_cansleep(bitbang->mdc, what ^ bitbang->mdc_active_low);
}
static struct mdiobb_ops mdio_gpio_ops = {