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swconfig: add (PHY) generic helper setting port link

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It's quite common for switches to have PHY per port so adding a generic
helper setting link state will help many drivers. It just needs an API
to access PHYs which this patch also adds.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 48621
This commit is contained in:
Rafał Miłecki 2016-02-03 09:33:38 +00:00
parent 8ebc9e7539
commit 19b9e14c47
2 changed files with 42 additions and 0 deletions
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36
target/linux/generic/files/drivers/net/phy/swconfig.c
View File

@ -25,6 +25,7 @@
#include <linux/switch.h>
#include <linux/of.h>
#include <linux/version.h>
#include <uapi/linux/mii.h>
#define SWCONFIG_DEVNAME "switch%d"
@ -1168,6 +1169,41 @@ unregister_switch(struct switch_dev *dev)
}
EXPORT_SYMBOL_GPL(unregister_switch);
int
switch_generic_set_link(struct switch_dev *dev, int port,
struct switch_port_link *link)
{
if (WARN_ON(!dev->ops->phy_write16))
return -ENOTSUPP;
/* Generic implementation */
if (link->aneg) {
dev->ops->phy_write16(dev, port, MII_BMCR, 0x0000);
dev->ops->phy_write16(dev, port, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
} else {
u16 bmcr = 0;
if (link->duplex)
bmcr |= BMCR_FULLDPLX;
switch (link->speed) {
case SWITCH_PORT_SPEED_10:
break;
case SWITCH_PORT_SPEED_100:
bmcr |= BMCR_SPEED100;
break;
case SWITCH_PORT_SPEED_1000:
bmcr |= BMCR_SPEED1000;
break;
default:
return -ENOTSUPP;
}
dev->ops->phy_write16(dev, port, MII_BMCR, bmcr);
}
return 0;
}
static int __init
swconfig_init(void)

6
target/linux/generic/files/include/linux/switch.h
View File

@ -99,6 +99,9 @@ struct switch_dev_ops {
struct switch_port_link *link);
int (*get_port_stats)(struct switch_dev *dev, int port,
struct switch_port_stats *stats);
int (*phy_read16)(struct switch_dev *dev, int addr, u8 reg, u16 *value);
int (*phy_write16)(struct switch_dev *dev, int addr, u8 reg, u16 value);
};
struct switch_dev {
@ -170,4 +173,7 @@ struct switch_attr {
int max;
};
int switch_generic_set_link(struct switch_dev *dev, int port,
struct switch_port_link *link);
#endif /* _LINUX_SWITCH_H */