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net: fixed-phy: Add fixed_phy_register_with_gpiod() API

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Add fixed_phy_register_with_gpiod() API. It lets users create a
fixed_phy instance that uses a GPIO descriptor which was obtained
externally e.g. through platform data.
This enables platform devices (non-DT based) to use GPIOs for link
status.

Signed-off-by: Moritz Fischer <mdf@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Moritz Fischer 2019-02-07 09:52:10 -08:00 committed by David S. Miller
parent a4751093a2
commit 71bd106d25
2 changed files with 40 additions and 7 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

32
drivers/net/phy/fixed_phy.c
View file

@ -229,12 +229,12 @@ static struct gpio_desc *fixed_phy_get_gpiod(struct device_node *np)
}
#endif
struct phy_device *fixed_phy_register(unsigned int irq,
struct fixed_phy_status *status,
struct device_node *np)
static struct phy_device *__fixed_phy_register(unsigned int irq,
struct fixed_phy_status *status,
struct device_node *np,
struct gpio_desc *gpiod)
{
struct fixed_mdio_bus *fmb = &platform_fmb;
struct gpio_desc *gpiod = NULL;
struct phy_device *phy;
int phy_addr;
int ret;
@ -243,9 +243,11 @@ struct phy_device *fixed_phy_register(unsigned int irq,
return ERR_PTR(-EPROBE_DEFER);
/* Check if we have a GPIO associated with this fixed phy */
gpiod = fixed_phy_get_gpiod(np);
if (IS_ERR(gpiod))
return ERR_CAST(gpiod);
if (!gpiod) {
gpiod = fixed_phy_get_gpiod(np);
if (IS_ERR(gpiod))
return ERR_CAST(gpiod);
}
/* Get the next available PHY address, up to PHY_MAX_ADDR */
phy_addr = ida_simple_get(&phy_fixed_ida, 0, PHY_MAX_ADDR, GFP_KERNEL);
@ -308,8 +310,24 @@ struct phy_device *fixed_phy_register(unsigned int irq,
return phy;
}
struct phy_device *fixed_phy_register(unsigned int irq,
struct fixed_phy_status *status,
struct device_node *np)
{
return __fixed_phy_register(irq, status, np, NULL);
}
EXPORT_SYMBOL_GPL(fixed_phy_register);
struct phy_device *
fixed_phy_register_with_gpiod(unsigned int irq,
struct fixed_phy_status *status,
struct gpio_desc *gpiod)
{
return __fixed_phy_register(irq, status, NULL, gpiod);
}
EXPORT_SYMBOL_GPL(fixed_phy_register_with_gpiod);
void fixed_phy_unregister(struct phy_device *phy)
{
phy_device_remove(phy);

15
include/linux/phy_fixed.h
View file

@ -19,6 +19,12 @@ extern int fixed_phy_add(unsigned int irq, int phy_id,
extern struct phy_device *fixed_phy_register(unsigned int irq,
struct fixed_phy_status *status,
struct device_node *np);
extern struct phy_device *
fixed_phy_register_with_gpiod(unsigned int irq,
struct fixed_phy_status *status,
struct gpio_desc *gpiod);
extern void fixed_phy_unregister(struct phy_device *phydev);
extern int fixed_phy_set_link_update(struct phy_device *phydev,
int (*link_update)(struct net_device *,
@ -35,6 +41,15 @@ static inline struct phy_device *fixed_phy_register(unsigned int irq,
{
return ERR_PTR(-ENODEV);
}
static inline struct phy_device *
fixed_phy_register_with_gpiod(unsigned int irq,
struct fixed_phy_status *status,
struct gpio_desc *gpiod)
{
return ERR_PTR(-ENODEV);
}
static inline void fixed_phy_unregister(struct phy_device *phydev)
{
}