From 19c0ef6b36a67fc579c77bb9b4da00e084fdb667 Mon Sep 17 00:00:00 2001
From: Ken Kawasaki <ken_kawasaki@spring.nifty.jp>
Date: Sat, 6 Nov 2010 05:11:24 +0000
Subject: [PATCH] axnet_cs: fix resume problem for some Ax88790 chip
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>
---
drivers/net/pcmcia/axnet_cs.c | 30 ++++++++++++++++++++----------
1 file changed, 20 insertions(+), 10 deletions(-)
diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c
index d2e166e29dda..8a4d19e5de06 100644
--- a/drivers/net/pcmcia/axnet_cs.c
+++ b/drivers/net/pcmcia/axnet_cs.c
@@ -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);
--
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