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r8152: adjust the settings about MAC clock speed down for RTL8153
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The MAC clock speed down could be enabled if the U1/U2 is disabled.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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hayeswang authored and David S. Miller committed Jun 9, 2017
1 parent ee4761c commit 134f98b
Showing 1 changed file with 29 additions and 5 deletions.
34 changes: 29 additions & 5 deletions drivers/net/usb/r8152.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2428,6 +2428,29 @@ static void __rtl_set_wol(struct r8152 *tp, u32 wolopts)
device_set_wakeup_enable(&tp->udev->dev, false);
}

static void r8153_mac_clk_spd(struct r8152 *tp, bool enable)
{
/* MAC clock speed down */
if (enable) {
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL,
ALDPS_SPDWN_RATIO);
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2,
EEE_SPDWN_RATIO);
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3,
PKT_AVAIL_SPDWN_EN | SUSPEND_SPDWN_EN |
U1U2_SPDWN_EN | L1_SPDWN_EN);
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4,
PWRSAVE_SPDWN_EN | RXDV_SPDWN_EN | TX10MIDLE_EN |
TP100_SPDWN_EN | TP500_SPDWN_EN | EEE_SPDWN_EN |
TP1000_SPDWN_EN);
} else {
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL, 0);
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2, 0);
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, 0);
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, 0);
}
}

static void r8153_u1u2en(struct r8152 *tp, bool enable)
{
u8 u1u2[8];
Expand Down Expand Up @@ -2533,7 +2556,9 @@ static void rtl8153_runtime_enable(struct r8152 *tp, bool enable)
if (enable) {
r8153_u1u2en(tp, false);
r8153_u2p3en(tp, false);
r8153_mac_clk_spd(tp, true);
} else {
r8153_mac_clk_spd(tp, false);
r8153_u2p3en(tp, true);
r8153_u1u2en(tp, true);
}
Expand Down Expand Up @@ -2881,6 +2906,7 @@ static void r8153_first_init(struct r8152 *tp)
u32 ocp_data;
int i;

r8153_mac_clk_spd(tp, false);
rxdy_gated_en(tp, true);
r8153_teredo_off(tp);

Expand Down Expand Up @@ -2947,6 +2973,8 @@ static void r8153_enter_oob(struct r8152 *tp)
u32 ocp_data;
int i;

r8153_mac_clk_spd(tp, true);

ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
ocp_data &= ~NOW_IS_OOB;
ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data);
Expand Down Expand Up @@ -3513,13 +3541,9 @@ static void r8153_init(struct r8152 *tp)

r8153_power_cut_en(tp, false);
r8153_u1u2en(tp, true);
r8153_mac_clk_spd(tp, false);
usb_enable_lpm(tp->udev);

/* MAC clock speed down */
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL, 0);
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2, 0);
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, 0);
ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, 0);

rtl_tally_reset(tp);
r8153_u2p3en(tp, true);
Expand Down

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