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phy: fixed_phy: Add gpio to determine link up/down.

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An SFP module may have a link up/down status pin which can be
connection to a GPIO line of the host. Add support for reading such an
GPIO in the fixed_phy driver.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn
2015-08-31 15:56:53 +02:00
committed by David S. Miller
parent 8b59d19e74
commit a5597008db
9 changed files with 59 additions and 15 deletions
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8
include/linux/phy_fixed.h
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@@ -13,9 +13,11 @@ struct device_node;
#if IS_ENABLED(CONFIG_FIXED_PHY)
extern int fixed_phy_add(unsigned int irq, int phy_id,
struct fixed_phy_status *status);
struct fixed_phy_status *status,
int link_gpio);
extern struct phy_device *fixed_phy_register(unsigned int irq,
struct fixed_phy_status *status,
int link_gpio,
struct device_node *np);
extern void fixed_phy_del(int phy_addr);
extern int fixed_phy_set_link_update(struct phy_device *phydev,
@@ -26,12 +28,14 @@ extern int fixed_phy_update_state(struct phy_device *phydev,
const struct fixed_phy_status *changed);
#else
static inline int fixed_phy_add(unsigned int irq, int phy_id,
struct fixed_phy_status *status)
struct fixed_phy_status *status,
int link_gpio)
{
return -ENODEV;
}
static inline struct phy_device *fixed_phy_register(unsigned int irq,
struct fixed_phy_status *status,
int gpio_link,
struct device_node *np)
{
return ERR_PTR(-ENODEV);