diff mbox

[v2,net-next,1/2] r8169: enable ALDPS for power saving

Message ID 1350974831-1438-1-git-send-email-hayeswang@realtek.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Hayes Wang Oct. 23, 2012, 6:47 a.m. UTC 
Enable ALDPS function to save power when link down. Note that the
feature should be set after the other PHY settings. And the firmware
is necessary. Don't enable it without loading the firmware.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
---
 drivers/net/ethernet/realtek/r8169.c | 62 ++++++++++++++++++++++++++++++------
 1 file changed, 52 insertions(+), 10 deletions(-)

Comments

Francois Romieu Oct. 23, 2012, 7:33 p.m. UTC | #1 
Hayes Wang <hayeswang@realtek.com> :
> Enable ALDPS function to save power when link down. Note that the
> feature should be set after the other PHY settings. And the firmware
> is necessary. Don't enable it without loading the firmware.
> 
> Signed-off-by: Hayes Wang <hayeswang@realtek.com>
[...]

Please see my just sent answer in yesterday's thread.

> +static void r810x_aldps_disable(struct rtl8169_private *tp)
> +{
> +	rtl_writephy(tp, 0x1f, 0x0000);
> +	rtl_writephy(tp, 0x18, 0x0310);
> +	msleep(100);
> +}

rtl8402_hw_phy_config used a msleep(20). Meguesses it won't hurt, right ?

[...]
> +
> +	/* ALDPS enable */
> +	r8168_aldps_enable_1(tp);

The functions are literate enough: you can remove the comment.

[...]
> @@ -6391,6 +6431,8 @@ static void rtl8169_net_suspend(struct net_device *dev)
>  {
>  	struct rtl8169_private *tp = netdev_priv(dev);
>  
> +	tp->features &= ~RTL_FEATURE_EXTENDED;
> +
>  	if (!netif_running(dev))
>  		return;

No (as previously stated).
Hayes Wang Oct. 24, 2012, 5:55 a.m. UTC | #2 
Francois Romieu [mailto:romieu@fr.zoreil.com] 
[...]
> > +static void r810x_aldps_disable(struct rtl8169_private *tp)
> > +{
> > +	rtl_writephy(tp, 0x1f, 0x0000);
> > +	rtl_writephy(tp, 0x18, 0x0310);
> > +	msleep(100);
> > +}
> 
> rtl8402_hw_phy_config used a msleep(20). Meguesses it won't 
> hurt, right ?

No, it won't hurt. The delay make suer there is enough time to pause ALDPS.
 
Best Regards,
Hayes

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diff mbox

Patch

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index e7ff886..cdd46de 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -687,6 +687,7 @@  enum features {
 	RTL_FEATURE_WOL		= (1 << 0),
 	RTL_FEATURE_MSI		= (1 << 1),
 	RTL_FEATURE_GMII	= (1 << 2),
+	RTL_FEATURE_EXTENDED	= (1 << 3),
 };
 
 struct rtl8169_counters {
@@ -2394,8 +2395,10 @@  static void rtl_apply_firmware(struct rtl8169_private *tp)
 	struct rtl_fw *rtl_fw = tp->rtl_fw;
 
 	/* TODO: release firmware once rtl_phy_write_fw signals failures. */
-	if (!IS_ERR_OR_NULL(rtl_fw))
+	if (!IS_ERR_OR_NULL(rtl_fw)) {
 		rtl_phy_write_fw(tp, rtl_fw);
+		tp->features |= RTL_FEATURE_EXTENDED;
+	}
 }
 
 static void rtl_apply_firmware_cond(struct rtl8169_private *tp, u8 reg, u16 val)
@@ -2406,6 +2409,31 @@  static void rtl_apply_firmware_cond(struct rtl8169_private *tp, u8 reg, u16 val)
 		rtl_apply_firmware(tp);
 }
 
+static void r810x_aldps_disable(struct rtl8169_private *tp)
+{
+	rtl_writephy(tp, 0x1f, 0x0000);
+	rtl_writephy(tp, 0x18, 0x0310);
+	msleep(100);
+}
+
+static void r810x_aldps_enable(struct rtl8169_private *tp)
+{
+	if (!(tp->features & RTL_FEATURE_EXTENDED))
+		return;
+
+	rtl_writephy(tp, 0x1f, 0x0000);
+	rtl_writephy(tp, 0x18, 0x8310);
+}
+
+static void r8168_aldps_enable_1(struct rtl8169_private *tp)
+{
+	if (!(tp->features & RTL_FEATURE_EXTENDED))
+		return;
+
+	rtl_writephy(tp, 0x1f, 0x0000);
+	rtl_w1w0_phy(tp, 0x15, 0x1000, 0x0000);
+}
+
 static void rtl8169s_hw_phy_config(struct rtl8169_private *tp)
 {
 	static const struct phy_reg phy_reg_init[] = {
@@ -3178,6 +3206,9 @@  static void rtl8168e_2_hw_phy_config(struct rtl8169_private *tp)
 	rtl_w1w0_phy(tp, 0x19, 0x0000, 0x0001);
 	rtl_w1w0_phy(tp, 0x10, 0x0000, 0x0400);
 	rtl_writephy(tp, 0x1f, 0x0000);
+
+	/* ALDPS enable */
+	r8168_aldps_enable_1(tp);
 }
 
 static void rtl8168f_hw_phy_config(struct rtl8169_private *tp)
@@ -3250,6 +3281,9 @@  static void rtl8168f_1_hw_phy_config(struct rtl8169_private *tp)
 	rtl_writephy(tp, 0x05, 0x8b85);
 	rtl_w1w0_phy(tp, 0x06, 0x4000, 0x0000);
 	rtl_writephy(tp, 0x1f, 0x0000);
+
+	/* ALDPS enable */
+	r8168_aldps_enable_1(tp);
 }
 
 static void rtl8168f_2_hw_phy_config(struct rtl8169_private *tp)
@@ -3257,6 +3291,9 @@  static void rtl8168f_2_hw_phy_config(struct rtl8169_private *tp)
 	rtl_apply_firmware(tp);
 
 	rtl8168f_hw_phy_config(tp);
+
+	/* ALDPS enable */
+	r8168_aldps_enable_1(tp);
 }
 
 static void rtl8411_hw_phy_config(struct rtl8169_private *tp)
@@ -3354,6 +3391,9 @@  static void rtl8411_hw_phy_config(struct rtl8169_private *tp)
 	rtl_w1w0_phy(tp, 0x19, 0x0000, 0x0001);
 	rtl_w1w0_phy(tp, 0x10, 0x0000, 0x0400);
 	rtl_writephy(tp, 0x1f, 0x0000);
+
+	/* ALDPS enable */
+	r8168_aldps_enable_1(tp);
 }
 
 static void rtl8168g_1_hw_phy_config(struct rtl8169_private *tp)
@@ -3439,21 +3479,19 @@  static void rtl8105e_hw_phy_config(struct rtl8169_private *tp)
 	};
 
 	/* Disable ALDPS before ram code */
-	rtl_writephy(tp, 0x1f, 0x0000);
-	rtl_writephy(tp, 0x18, 0x0310);
-	msleep(100);
+	r810x_aldps_disable(tp);
 
 	rtl_apply_firmware(tp);
 
 	rtl_writephy_batch(tp, phy_reg_init, ARRAY_SIZE(phy_reg_init));
+
+	r810x_aldps_enable(tp);
 }
 
 static void rtl8402_hw_phy_config(struct rtl8169_private *tp)
 {
 	/* Disable ALDPS before setting firmware */
-	rtl_writephy(tp, 0x1f, 0x0000);
-	rtl_writephy(tp, 0x18, 0x0310);
-	msleep(20);
+	r810x_aldps_disable(tp);
 
 	rtl_apply_firmware(tp);
 
@@ -3463,6 +3501,8 @@  static void rtl8402_hw_phy_config(struct rtl8169_private *tp)
 	rtl_writephy(tp, 0x10, 0x401f);
 	rtl_writephy(tp, 0x19, 0x7030);
 	rtl_writephy(tp, 0x1f, 0x0000);
+
+	r810x_aldps_enable(tp);
 }
 
 static void rtl8106e_hw_phy_config(struct rtl8169_private *tp)
@@ -3475,9 +3515,7 @@  static void rtl8106e_hw_phy_config(struct rtl8169_private *tp)
 	};
 
 	/* Disable ALDPS before ram code */
-	rtl_writephy(tp, 0x1f, 0x0000);
-	rtl_writephy(tp, 0x18, 0x0310);
-	msleep(100);
+	r810x_aldps_disable(tp);
 
 	rtl_apply_firmware(tp);
 
@@ -3485,6 +3523,8 @@  static void rtl8106e_hw_phy_config(struct rtl8169_private *tp)
 	rtl_writephy_batch(tp, phy_reg_init, ARRAY_SIZE(phy_reg_init));
 
 	rtl_eri_write(tp, 0x1d0, ERIAR_MASK_0011, 0x0000, ERIAR_EXGMAC);
+
+	r810x_aldps_enable(tp);
 }
 
 static void rtl_hw_phy_config(struct net_device *dev)
@@ -6391,6 +6431,8 @@  static void rtl8169_net_suspend(struct net_device *dev)
 {
 	struct rtl8169_private *tp = netdev_priv(dev);
 
+	tp->features &= ~RTL_FEATURE_EXTENDED;
+
 	if (!netif_running(dev))
 		return;