diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2020-09-01 15:59:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-03 15:08:03 -0700 |
| commit | e9ec5c3bd238f2cbe9d9696e994f36d1b249c058 (patch) | |
| tree | cb63d252e803121e6aaae1b2fe00d06052e8bf3c /drivers/net/dsa/bcm_sf2.c | |
| parent | e489aea7a6557350a2db0312ed8b89cc26b9744c (diff) | |
net: dsa: bcm_sf2: request and handle clocks
Fetch the corresponding clock resource and enable/disable it during
suspend/resume if and only if we have no ports defined for Wake-on-LAN.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/bcm_sf2.c')
| -rw-r--r-- | drivers/net/dsa/bcm_sf2.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c index bafddb35f3a9..b8fa0a46c5c9 100644 --- a/drivers/net/dsa/bcm_sf2.c +++ b/drivers/net/dsa/bcm_sf2.c @@ -14,6 +14,7 @@ #include <linux/phy_fixed.h> #include <linux/phylink.h> #include <linux/mii.h> +#include <linux/clk.h> #include <linux/of.h> #include <linux/of_irq.h> #include <linux/of_address.h> @@ -750,6 +751,9 @@ static int bcm_sf2_sw_suspend(struct dsa_switch *ds) bcm_sf2_port_disable(ds, port); } + if (!priv->wol_ports_mask) + clk_disable_unprepare(priv->clk); + return 0; } @@ -758,6 +762,9 @@ static int bcm_sf2_sw_resume(struct dsa_switch *ds) struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); int ret; + if (!priv->wol_ports_mask) + clk_prepare_enable(priv->clk); + ret = bcm_sf2_sw_rst(priv); if (ret) { pr_err("%s: failed to software reset switch\n", __func__); @@ -1189,10 +1196,16 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev) base++; } + priv->clk = devm_clk_get_optional(&pdev->dev, "sw_switch"); + if (IS_ERR(priv->clk)) + return PTR_ERR(priv->clk); + + clk_prepare_enable(priv->clk); + ret = bcm_sf2_sw_rst(priv); if (ret) { pr_err("unable to software reset switch: %d\n", ret); - return ret; + goto out_clk; } bcm_sf2_gphy_enable_set(priv->dev->ds, true); @@ -1200,7 +1213,7 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev) ret = bcm_sf2_mdio_register(ds); if (ret) { pr_err("failed to register MDIO bus\n"); - return ret; + goto out_clk; } bcm_sf2_gphy_enable_set(priv->dev->ds, false); @@ -1267,6 +1280,8 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev) out_mdio: bcm_sf2_mdio_unregister(priv); +out_clk: + clk_disable_unprepare(priv->clk); return ret; } @@ -1280,6 +1295,7 @@ static int bcm_sf2_sw_remove(struct platform_device *pdev) dsa_unregister_switch(priv->dev->ds); bcm_sf2_cfp_exit(priv->dev->ds); bcm_sf2_mdio_unregister(priv); + clk_disable_unprepare(priv->clk); if (priv->type == BCM7278_DEVICE_ID && !IS_ERR(priv->rcdev)) reset_control_assert(priv->rcdev); |