linux-kernel - [PATCH RESEND v10 1/4] PHY: Add function set

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1393308882-3964-2-git-send-email-lho@apm.com>
Date:	Mon, 24 Feb 2014 23:14:39 -0700
From:	Loc Ho <lho@....com>
To:	kishon@...com, tj@...nel.org
Cc:	olof@...om.net, arnd@...db.de, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	ddutile@...hat.com, jcm@...hat.com, patches@....com,
	Loc Ho <lho@....com>
Subject: [PATCH RESEND v10 1/4] PHY: Add function set_speed to generic PHY framework

This patch adds function set_speed to the generic PHY framework operation
structure. This function can be called to instruct the PHY underlying layer
at specified lane to configure for specified speed in hertz.

Signed-off-by: Loc Ho <lho@....com>
---
 drivers/phy/phy-core.c  |   21 +++++++++++++++++++++
 include/linux/phy/phy.h |    8 ++++++++
 2 files changed, 29 insertions(+), 0 deletions(-)

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 645c867..44f2f63 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -257,6 +257,27 @@ int phy_power_off(struct phy *phy)
 }
 EXPORT_SYMBOL_GPL(phy_power_off);
 
+int phy_set_speed(struct phy *phy, int lane, u64 speed)
+{
+        int ret = -ENOTSUPP;
+
+        mutex_lock(&phy->mutex);
+        if (phy->ops->set_speed) {
+                ret =  phy->ops->set_speed(phy, lane, speed);
+                if (ret < 0) {
+                        dev_err(&phy->dev, "phy set speed failed --> %d\n",
+                                ret);
+                        goto out;
+                }
+        }
+
+out:
+        mutex_unlock(&phy->mutex);
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(phy_set_speed);
+
 /**
  * of_phy_get() - lookup and obtain a reference to a phy by phandle
  * @dev: device that requests this phy
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index e273e5a..4eb589c 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -27,6 +27,7 @@ struct phy;
  * @exit: operation to be performed while exiting
  * @power_on: powering on the phy
  * @power_off: powering off the phy
+ * @set_speed: set operation speed in hz
  * @owner: the module owner containing the ops
  */
 struct phy_ops {
@@ -34,6 +35,7 @@ struct phy_ops {
 	int	(*exit)(struct phy *phy);
 	int	(*power_on)(struct phy *phy);
 	int	(*power_off)(struct phy *phy);
+	int	(*set_speed)(struct phy *phy, int lane, u64 speed);
 	struct module *owner;
 };
 
@@ -145,6 +147,7 @@ static inline void phy_set_bus_width(struct phy *phy, int bus_width)
 {
 	phy->attrs.bus_width = bus_width;
 }
+int phy_set_speed(struct phy *phy, int lane, u64 speed);
 struct phy *phy_get(struct device *dev, const char *string);
 struct phy *devm_phy_get(struct device *dev, const char *string);
 void phy_put(struct phy *phy);
@@ -227,6 +230,11 @@ static inline void phy_set_bus_width(struct phy *phy, int bus_width)
 	return;
 }
 
+static inline int phy_set_speed(struct phy *phy, int lane, u64 speed)
+{
+	return -ENOSYS;
+}
+
 static inline struct phy *phy_get(struct device *dev, const char *string)
 {
 	return ERR_PTR(-ENOSYS);
-- 
1.5.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/