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axnet_cs: fix resume problem for some Ax88790 chip

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axnet_cs:
    Some Ax88790 chip need to reinitialize the CISREG_CCSR register
    after resume.

Signed-off-by: Ken Kawasaki <ken_kawasaki@spring.nifty.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ken Kawasaki 2010-11-06 05:11:24 +00:00 committed by David S. Miller
parent 2de7957072
commit 19c0ef6b36
1 changed files with 20 additions and 10 deletions
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30
drivers/net/pcmcia/axnet_cs.c
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@ -111,13 +111,14 @@ static irqreturn_t ax_interrupt(int irq, void *dev_id);
typedef struct axnet_dev_t {
struct pcmcia_device *p_dev;
caddr_t base;
struct timer_list watchdog;
int stale, fast_poll;
u_short link_status;
u_char duplex_flag;
int phy_id;
int flags;
caddr_t base;
struct timer_list watchdog;
int stale, fast_poll;
u_short link_status;
u_char duplex_flag;
int phy_id;
int flags;
int active_low;
} axnet_dev_t;
static inline axnet_dev_t *PRIV(struct net_device *dev)
@ -322,6 +323,8 @@ static int axnet_config(struct pcmcia_device *link)
if (info->flags & IS_AX88790)
outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
info->active_low = 0;
for (i = 0; i < 32; i++) {
j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
@ -329,15 +332,18 @@ static int axnet_config(struct pcmcia_device *link)
if ((j != 0) && (j != 0xffff)) break;
}
/* Maybe PHY is in power down mode. (PPD_SET = 1)
Bit 2 of CCSR is active low. */
if (i == 32) {
/* Maybe PHY is in power down mode. (PPD_SET = 1)
Bit 2 of CCSR is active low. */
pcmcia_write_config_byte(link, CISREG_CCSR, 0x04);
for (i = 0; i < 32; i++) {
j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
if (j == j2) continue;
if ((j != 0) && (j != 0xffff)) break;
if ((j != 0) && (j != 0xffff)) {
info->active_low = 1;
break;
}
}
}
@ -383,8 +389,12 @@ static int axnet_suspend(struct pcmcia_device *link)
static int axnet_resume(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
axnet_dev_t *info = PRIV(dev);
if (link->open) {
if (info->active_low == 1)
pcmcia_write_config_byte(link, CISREG_CCSR, 0x04);
axnet_reset_8390(dev);
AX88190_init(dev, 1);
netif_device_attach(dev);