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Message-ID: <1460beebce4ba23722cfb185b0f9f884cca3b9e9.1496224930.git.leonard.crestez@nxp.com> Date: Wed, 31 May 2017 13:29:30 +0300 From: Leonard Crestez <leonard.crestez@....com> To: Florian Fainelli <f.fainelli@...il.com>, "David S. Miller" <davem@...emloft.net>, Andrew Lunn <andrew@...n.ch>, Shawn Guo <shawnguo@...nel.org> CC: Andy Duan <fugang.duan@....com>, Johan Hovold <johan@...nel.org>, Alexandre Belloni <alexandre.belloni@...e-electrons.com>, Philipp Zabel <p.zabel@...gutronix.de>, Fabio Estevam <fabio.estevam@....com>, <netdev@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org> Subject: [PATCH v2 net 2/2] net: phy: micrel: Restore led_mode and clk_sel on resume These bits seem to be lost after a suspend/resume cycle so just set them again. Do this by splitting the handling of these bits into a function that is also called on resume. This patch fixes ethernet suspend/resume on imx6ul-14x14-evk boards. Signed-off-by: Leonard Crestez <leonard.crestez@....com> --- drivers/net/phy/micrel.c | 42 ++++++++++++++++++++++++++++-------------- 1 file changed, 28 insertions(+), 14 deletions(-) diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index 6a5fd18..b9252b8d8 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -268,23 +268,12 @@ static int kszphy_nand_tree_disable(struct phy_device *phydev) return ret; } -static int kszphy_config_init(struct phy_device *phydev) +/* Some config bits need to be set again on resume, handle them here. */ +static int kszphy_config_reset(struct phy_device *phydev) { struct kszphy_priv *priv = phydev->priv; - const struct kszphy_type *type; int ret; - if (!priv) - return 0; - - type = priv->type; - - if (type->has_broadcast_disable) - kszphy_broadcast_disable(phydev); - - if (type->has_nand_tree_disable) - kszphy_nand_tree_disable(phydev); - if (priv->rmii_ref_clk_sel) { ret = kszphy_rmii_clk_sel(phydev, priv->rmii_ref_clk_sel_val); if (ret) { @@ -295,11 +284,30 @@ static int kszphy_config_init(struct phy_device *phydev) } if (priv->led_mode >= 0) - kszphy_setup_led(phydev, type->led_mode_reg, priv->led_mode); + kszphy_setup_led(phydev, priv->type->led_mode_reg, priv->led_mode); return 0; } +static int kszphy_config_init(struct phy_device *phydev) +{ + struct kszphy_priv *priv = phydev->priv; + const struct kszphy_type *type; + + if (!priv) + return 0; + + type = priv->type; + + if (type->has_broadcast_disable) + kszphy_broadcast_disable(phydev); + + if (type->has_nand_tree_disable) + kszphy_nand_tree_disable(phydev); + + return kszphy_config_reset(phydev); +} + static int ksz8041_config_init(struct phy_device *phydev) { struct device_node *of_node = phydev->mdio.dev.of_node; @@ -700,8 +708,14 @@ static int kszphy_suspend(struct phy_device *phydev) static int kszphy_resume(struct phy_device *phydev) { + int ret; + genphy_resume(phydev); + ret = kszphy_config_reset(phydev); + if (ret) + return ret; + /* Enable PHY Interrupts */ if (phy_interrupt_is_valid(phydev)) { phydev->interrupts = PHY_INTERRUPT_ENABLED; -- 2.7.4
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