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Commit 64882709 authored by Srinivas Kandagatla's avatar Srinivas Kandagatla Committed by David S. Miller
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mdio-gpio: Add reset functionality to mdio-gpio driver(v2). 



This patch adds phy reset functionality to mdio-gpio driver. Now
mdio_gpio_platform_data has new member as function pointer which can be
filled at the bsp level for a callback from phy infrastructure. Also the
mdio-bitbang driver fills-in the reset function of mii_bus structure.

Without this patch the bsp level code has to takecare of the reseting
PHY's on the bus, which become bit hacky for every bsp and
phy-infrastructure is ignored aswell.

Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 229a66e3

drivers/net/phy/mdio-bitbang.c

+9 −0
Original line number Diff line number Diff line
@@ -202,6 +202,14 @@ static int mdiobb_write(struct mii_bus *bus, int phy, int reg, u16 val) 
	return 0;

}



static int mdiobb_reset(struct mii_bus *bus)

{

	struct mdiobb_ctrl *ctrl = bus->priv;

	if (ctrl->reset)

		ctrl->reset(bus);

	return 0;

}



struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl)

{

	struct mii_bus *bus;
@@ -214,6 +222,7 @@ struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl) 


	bus->read = mdiobb_read;

	bus->write = mdiobb_write;

	bus->reset = mdiobb_reset;

	bus->priv = ctrl;



	return bus;

drivers/net/phy/mdio-gpio.c

+1 −0
Original line number Diff line number Diff line
@@ -95,6 +95,7 @@ static struct mii_bus * __devinit mdio_gpio_bus_init(struct device *dev, 
		goto out;



	bitbang->ctrl.ops = &mdio_gpio_ops;

	bitbang->ctrl.reset = pdata->reset;

	bitbang->mdc = pdata->mdc;

	bitbang->mdio = pdata->mdio;

include/linux/mdio-bitbang.h

+2 −0
Original line number Diff line number Diff line
@@ -32,6 +32,8 @@ struct mdiobb_ops { 


struct mdiobb_ctrl {

	const struct mdiobb_ops *ops;

	/* reset callback */

	int (*reset)(struct mii_bus *bus);

};



/* The returned bus is not yet registered with the phy layer. */

include/linux/mdio-gpio.h

+2 −0
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ struct mdio_gpio_platform_data { 


	unsigned int phy_mask;

	int irqs[PHY_MAX_ADDR];

	/* reset callback */

	int (*reset)(struct mii_bus *bus);

};



#endif /* __LINUX_MDIO_GPIO_H */