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net/phy: add IC+ IP101A and support APS.

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This patch adds the IC+ IP101A Single port 10/100 PHY
and supports the APS (i.e. power saving mode while link is down)
for both IP1001 and IP101A (where this mode is supported).

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Giuseppe CAVALLARO 2011-09-06 20:14:50 +00:00 committed by David S. Miller
parent e3feb266c3
commit 9c9b1f24f2
1 changed files with 68 additions and 11 deletions
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79
drivers/net/phy/icplus.c
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@ -30,10 +30,17 @@
#include <asm/irq.h>
#include <asm/uaccess.h>
MODULE_DESCRIPTION("ICPlus IP175C/IC1001 PHY drivers");
MODULE_DESCRIPTION("ICPlus IP175C/IP101A/IC1001 PHY drivers");
MODULE_AUTHOR("Michael Barkowski");
MODULE_LICENSE("GPL");
/* IP101A/IP1001 */
#define IP10XX_SPEC_CTRL_STATUS 16 /* Spec. Control Register */
#define IP1001_SPEC_CTRL_STATUS_2 20 /* IP1001 Spec. Control Reg 2 */
#define IP1001_PHASE_SEL_MASK 3 /* IP1001 RX/TXPHASE_SEL */
#define IP1001_APS_ON 11 /* IP1001 APS Mode bit */
#define IP101A_APS_ON 2 /* IP101A APS Mode bit */
static int ip175c_config_init(struct phy_device *phydev)
{
int err, i;
@ -89,27 +96,58 @@ static int ip175c_config_init(struct phy_device *phydev)
return 0;
}
static int ip1001_config_init(struct phy_device *phydev)
static int ip1xx_reset(struct phy_device *phydev)
{
int err, value;
int err, bmcr;
/* Software Reset PHY */
value = phy_read(phydev, MII_BMCR);
value |= BMCR_RESET;
err = phy_write(phydev, MII_BMCR, value);
bmcr = phy_read(phydev, MII_BMCR);
bmcr |= BMCR_RESET;
err = phy_write(phydev, MII_BMCR, bmcr);
if (err < 0)
return err;
do {
value = phy_read(phydev, MII_BMCR);
} while (value & BMCR_RESET);
bmcr = phy_read(phydev, MII_BMCR);
} while (bmcr & BMCR_RESET);
return err;
}
static int ip1001_config_init(struct phy_device *phydev)
{
int c;
c = ip1xx_reset(phydev);
if (c < 0)
return c;
/* Enable Auto Power Saving mode */
c = phy_read(phydev, IP1001_SPEC_CTRL_STATUS_2);
c |= IP1001_APS_ON;
if (c < 0)
return c;
/* Additional delay (2ns) used to adjust RX clock phase
* at GMII/ RGMII interface */
value = phy_read(phydev, 16);
value |= 0x3;
c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS);
c |= IP1001_PHASE_SEL_MASK;
return phy_write(phydev, 16, value);
return phy_write(phydev, IP10XX_SPEC_CTRL_STATUS, c);
}
static int ip101a_config_init(struct phy_device *phydev)
{
int c;
c = ip1xx_reset(phydev);
if (c < 0)
return c;
/* Enable Auto Power Saving mode */
c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS);
c |= IP101A_APS_ON;
return c;
}
static int ip175c_read_status(struct phy_device *phydev)
@ -158,6 +196,20 @@ static struct phy_driver ip1001_driver = {
.driver = { .owner = THIS_MODULE,},
};
static struct phy_driver ip101a_driver = {
.phy_id = 0x02430c54,
.name = "ICPlus IP101A",
.phy_id_mask = 0x0ffffff0,
.features = PHY_BASIC_FEATURES | SUPPORTED_Pause |
SUPPORTED_Asym_Pause,
.config_init = &ip101a_config_init,
.config_aneg = &genphy_config_aneg,
.read_status = &genphy_read_status,
.suspend = genphy_suspend,
.resume = genphy_resume,
.driver = { .owner = THIS_MODULE,},
};
static int __init icplus_init(void)
{
int ret = 0;
@ -166,12 +218,17 @@ static int __init icplus_init(void)
if (ret < 0)
return -ENODEV;
ret = phy_driver_register(&ip101a_driver);
if (ret < 0)
return -ENODEV;
return phy_driver_register(&ip175c_driver);
}
static void __exit icplus_exit(void)
{
phy_driver_unregister(&ip1001_driver);
phy_driver_unregister(&ip101a_driver);
phy_driver_unregister(&ip175c_driver);
}