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[TG3]: Some low power fixes

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Add some missing workarounds in tg3_set_power_state():

1. Workaround to prevent overdrawing current on 5714.

2. Do not power down 5700's PHY because of hw limitation.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2005-12-19 16:26:28 -08:00 committed by David S. Miller
parent 8c2dc7e1e7
commit dc56b7d46d
1 changed files with 13 additions and 3 deletions
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16
drivers/net/tg3.c
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@ -1042,17 +1042,26 @@ static void tg3_frob_aux_power(struct tg3 *tp)
udelay(100);
} else {
u32 no_gpio2;
u32 grc_local_ctrl;
u32 grc_local_ctrl = 0;
if (tp_peer != tp &&
(tp_peer->tg3_flags & TG3_FLAG_INIT_COMPLETE) != 0)
return;
/* Workaround to prevent overdrawing Amps. */
if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
ASIC_REV_5714) {
grc_local_ctrl |= GRC_LCLCTRL_GPIO_OE3;
tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
grc_local_ctrl);
udelay(100);
}
/* On 5753 and variants, GPIO2 cannot be used. */
no_gpio2 = tp->nic_sram_data_cfg &
NIC_SRAM_DATA_CFG_NO_GPIO2;
grc_local_ctrl = GRC_LCLCTRL_GPIO_OE0 |
grc_local_ctrl |= GRC_LCLCTRL_GPIO_OE0 |
GRC_LCLCTRL_GPIO_OE1 |
GRC_LCLCTRL_GPIO_OE2 |
GRC_LCLCTRL_GPIO_OUTPUT1 |
@ -1297,7 +1306,8 @@ static int tg3_set_power_state(struct tg3 *tp, int state)
tg3_writephy(tp, MII_TG3_EXT_CTRL,
MII_TG3_EXT_CTRL_FORCE_LED_OFF);
tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x01b2);
tg3_writephy(tp, MII_BMCR, BMCR_PDOWN);
if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700)
tg3_writephy(tp, MII_BMCR, BMCR_PDOWN);
}
}