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51 lines
1.9 KiB
Diff
51 lines
1.9 KiB
Diff
From db88f10ad6a84c5bcb71bf51f0988a4bb1733bea Mon Sep 17 00:00:00 2001
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From: Srinivas Kandagatla <srinivas.kandagatla@st.com>
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Date: Thu, 16 Jan 2014 10:52:52 +0000
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Subject: [PATCH] net: stmmac: restore pinstate in pm resume.
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This patch adds code to restore default pinstate of the pins when it
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comes back from low power state. Without this patch the state of the
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pins would be unknown and the driver would not work.
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This patch also adds code to put the pins in to sleep state when the
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driver enters low power state.
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Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
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Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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index c1298a0..df7d8d6 100644
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--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@@ -43,6 +43,7 @@
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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#include <linux/prefetch.h>
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+#include <linux/pinctrl/consumer.h>
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#ifdef CONFIG_STMMAC_DEBUG_FS
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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@@ -2864,6 +2865,7 @@ int stmmac_suspend(struct net_device *ndev)
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priv->hw->mac->pmt(priv->ioaddr, priv->wolopts);
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else {
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stmmac_set_mac(priv->ioaddr, false);
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+ pinctrl_pm_select_sleep_state(priv->device);
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/* Disable clock in case of PWM is off */
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clk_disable_unprepare(priv->stmmac_clk);
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}
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@@ -2890,6 +2892,7 @@ int stmmac_resume(struct net_device *ndev)
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if (device_may_wakeup(priv->device)) {
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priv->hw->mac->pmt(priv->ioaddr, 0);
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} else {
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+ pinctrl_pm_select_default_state(priv->device);
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/* enable the clk prevously disabled */
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clk_prepare_enable(priv->stmmac_clk);
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/* reset the phy so that it's ready */
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--
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1.8.5.5
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