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Date: Mon, 2 Nov 2009 16:32:12 -0800
From: "Matt Carlson" <mcarlson@...adcom.com>
To: davem@...emloft.net
cc: netdev@...r.kernel.org, andy@...yhouse.net
Subject: [PATCH 18/20] tg3 / broadcom: Add APD support for GPHYs
This patch adds an RXC auto power-down feature to the code that supports
the gphys.
Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
Reviewed-by: Michael Chan <mchan@...adcom.com>
---
drivers/net/phy/broadcom.c | 51 ++++++++++++++++++++++++++++++++++++-------
drivers/net/tg3.c | 4 ++-
2 files changed, 45 insertions(+), 10 deletions(-)
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
index 7491433..7b10495 100644
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -107,6 +107,11 @@
/* 00101: Spare Control Register 3 */
#define BCM54XX_SHD_SCR3 0x05
#define BCM54XX_SHD_SCR3_DEF_CLK125 0x0001
+#define BCM54XX_SHD_SCR3_DLLAPD_DIS 0x0002
+
+/* 01010: Auto Power-Down */
+#define BCM54XX_SHD_APD 0x0a
+#define BCM54XX_SHD_APD_EN 0x0020
#define BCM5482_SHD_LEDS1 0x0d /* 01101: LED Selector 1 */
/* LED3 / ~LINKSPD[2] selector */
@@ -321,9 +326,11 @@ error:
static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev)
{
u32 val, orig;
+ bool clk125en = true;
/* Abort if we are using an untested phy. */
- if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610 ||
+ if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM57780 ||
+ BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610 ||
BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610M)
return;
@@ -333,20 +340,45 @@ static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev)
orig = val;
- if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) {
- if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
- BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) &&
- BRCM_PHY_REV(phydev) >= 0x3) {
- /* Here, bit 0 _disables_ CLK125 when set */
- val |= BCM54XX_SHD_SCR3_DEF_CLK125;
- } else {
+ if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
+ BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) &&
+ BRCM_PHY_REV(phydev) >= 0x3) {
+ /*
+ * Here, bit 0 _disables_ CLK125 when set.
+ * This bit is set by default.
+ */
+ clk125en = false;
+ } else {
+ if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) {
/* Here, bit 0 _enables_ CLK125 when set */
val &= ~BCM54XX_SHD_SCR3_DEF_CLK125;
+ clk125en = false;
}
}
+ if (clk125en == false ||
+ (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
+ val &= ~BCM54XX_SHD_SCR3_DLLAPD_DIS;
+ else
+ val |= BCM54XX_SHD_SCR3_DLLAPD_DIS;
+
if (orig != val)
bcm54xx_shadow_write(phydev, BCM54XX_SHD_SCR3, val);
+
+ val = bcm54xx_shadow_read(phydev, BCM54XX_SHD_APD);
+ if (val < 0)
+ return;
+
+ orig = val;
+
+ if (clk125en == false ||
+ (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
+ val |= BCM54XX_SHD_APD_EN;
+ else
+ val &= ~BCM54XX_SHD_APD_EN;
+
+ if (orig != val)
+ bcm54xx_shadow_write(phydev, BCM54XX_SHD_APD, val);
}
static int bcm54xx_config_init(struct phy_device *phydev)
@@ -376,7 +408,8 @@ static int bcm54xx_config_init(struct phy_device *phydev)
(phydev->dev_flags & PHY_BRCM_CLEAR_RGMII_MODE))
bcm54xx_shadow_write(phydev, BCM54XX_SHD_RGMII_MODE, 0);
- if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)
+ if ((phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) ||
+ (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
bcm54xx_adjust_rxrefclk(phydev);
bcm54xx_phydsp_config(phydev);
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 369ddba..f74bf91 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -1097,11 +1097,13 @@ static int tg3_mdio_init(struct tg3 *tp)
switch (phydev->drv->phy_id & phydev->drv->phy_id_mask) {
case TG3_PHY_ID_BCM57780:
phydev->interface = PHY_INTERFACE_MODE_GMII;
+ phydev->dev_flags |= PHY_BRCM_AUTO_PWRDWN_ENABLE;
break;
case TG3_PHY_ID_BCM50610:
case TG3_PHY_ID_BCM50610M:
phydev->dev_flags |= PHY_BRCM_CLEAR_RGMII_MODE |
- PHY_BRCM_RX_REFCLK_UNUSED;
+ PHY_BRCM_RX_REFCLK_UNUSED |
+ PHY_BRCM_AUTO_PWRDWN_ENABLE;
if (tp->tg3_flags3 & TG3_FLG3_RGMII_STD_IBND_DISABLE)
phydev->dev_flags |= PHY_BRCM_STD_IBND_DISABLE;
if (tp->tg3_flags3 & TG3_FLG3_RGMII_EXT_IBND_RX_EN)
--
1.6.4.4
--
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