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ath79: phy-ar7200-usb: adapt old behavior of arch/mips/ath79/dev-usb.c

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[ Upstream commit 6cca6fffa0 ]

Do not put usb-phy into reset if clearing the usb-phy reset or
setting the suspend_override has failed.

Reorder (de)asserts like in arch/mips/ath79/dev-usb.c.

Add an optional reset_control "usb-phy-analog", which is needed for
ar934x SoCs like in the old mach-driver arch/mips/ath79/dev-usb.c.

Tested-By: Lech Perczak <lech.perczak@gmail.com> [TL-WDR4300]
Signed-off-by: Johann Neuhauser <johann@it-neuhauser.de>
[added reference to upstream commit, Tested-by]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
This commit is contained in:
Johann Neuhauser 2019-12-19 13:07:17 +01:00 committed by Petr Štetiar
parent b2660e67f0
commit c9b6bb43ce
1 changed files with 18 additions and 6 deletions
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24
target/linux/ath79/patches-4.14/0004-phy-add-ath79-usb-phys.patch
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@ -194,7 +194,7 @@ Signed-off-by: John Crispin <john@phrozen.org>
+MODULE_LICENSE("GPL");
--- /dev/null
+++ b/drivers/phy/phy-ar7200-usb.c
@@ -0,0 +1,123 @@
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2015 Alban Bedel <albeu@free.fr>
+ *
@ -212,6 +212,7 @@ Signed-off-by: John Crispin <john@phrozen.org>
+
+struct ar7200_usb_phy {
+ struct reset_control *rst_phy;
+ struct reset_control *rst_phy_analog;
+ struct reset_control *suspend_override;
+ struct phy *phy;
+ int gpio;
@ -222,12 +223,12 @@ Signed-off-by: John Crispin <john@phrozen.org>
+ struct ar7200_usb_phy *priv = phy_get_drvdata(phy);
+ int err = 0;
+
+ if (priv->rst_phy)
+ err = reset_control_deassert(priv->rst_phy);
+ if (!err && priv->suspend_override)
+ if (priv->suspend_override)
+ err = reset_control_assert(priv->suspend_override);
+ if (err && priv->rst_phy)
+ err = reset_control_assert(priv->rst_phy);
+ if (priv->rst_phy)
+ err |= reset_control_deassert(priv->rst_phy);
+ if (priv->rst_phy_analog)
+ err |= reset_control_deassert(priv->rst_phy_analog);
+
+ return err;
+}
@ -241,6 +242,8 @@ Signed-off-by: John Crispin <john@phrozen.org>
+ err = reset_control_deassert(priv->suspend_override);
+ if (priv->rst_phy)
+ err |= reset_control_assert(priv->rst_phy);
+ if (priv->rst_phy_analog)
+ err |= reset_control_assert(priv->rst_phy_analog);
+
+ return err;
+}
@ -266,6 +269,15 @@ Signed-off-by: John Crispin <john@phrozen.org>
+ return PTR_ERR(priv->rst_phy);
+ }
+
+ priv->rst_phy_analog = devm_reset_control_get_optional(
+ &pdev->dev, "usb-phy-analog");
+ if (IS_ERR(priv->rst_phy_analog)) {
+ if (PTR_ERR(priv->rst_phy_analog) == -ENOENT)
+ priv->rst_phy_analog = NULL;
+ else
+ return PTR_ERR(priv->rst_phy_analog);
+ }
+
+ priv->suspend_override = devm_reset_control_get_optional(
+ &pdev->dev, "usb-suspend-override");
+ if (IS_ERR(priv->suspend_override)) {