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smsc75xx: let EEPROM determine GPIO/LED settings 

This patch allows the GPIO/LED settings to be configured by the
EEPROM if present, and only sets the default values (LED outputs
for link/activity) when an EEPROM is not detected.

Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steve Glendinning 2012-05-04 00:57:13 +00:00 committed by David S. Miller
parent 4f94a929e4
commit 97138a1ca7
1 changed files with 12 additions and 7 deletions
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19
drivers/net/usb/smsc75xx.c
View File

@ -903,15 +903,20 @@ static int smsc75xx_reset(struct usbnet *dev)
netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x", buf);
/* Configure GPIO pins as LED outputs */
ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
check_warn_return(ret, "Failed to read LED_GPIO_CFG: %d", ret);
ret = smsc75xx_read_reg(dev, E2P_CMD, &buf);
check_warn_return(ret, "Failed to read E2P_CMD: %d", ret);
buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
/* only set default GPIO/LED settings if no EEPROM is detected */
if (!(buf & E2P_CMD_LOADED)) {
ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
check_warn_return(ret, "Failed to read LED_GPIO_CFG: %d", ret);
ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
check_warn_return(ret, "Failed to write LED_GPIO_CFG: %d", ret);
buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
check_warn_return(ret, "Failed to write LED_GPIO_CFG: %d", ret);
}
ret = smsc75xx_write_reg(dev, FLOW, 0);
check_warn_return(ret, "Failed to write FLOW: %d", ret);