From: "Radu Pirea (NXP OSS)" <radu-nicolae.pirea@oss.nxp.com>
To: andrew@lunn.ch, hkallweit1@gmail.com, linux@armlinux.org.uk,
davem@davemloft.net, kuba@kernel.org
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
"Radu Pirea (NXP OSS)" <radu-nicolae.pirea@oss.nxp.com>
Subject: [PATCH v3 1/2] net: phy: add genphy_c45_pma_suspend/resume
Date: Mon, 19 Apr 2021 19:13:59 +0300 [thread overview]
Message-ID: <20210419161400.260703-2-radu-nicolae.pirea@oss.nxp.com> (raw)
In-Reply-To: <20210419161400.260703-1-radu-nicolae.pirea@oss.nxp.com>
Add generic PMA suspend and resume callback functions for C45 PHYs.
Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea@oss.nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
drivers/net/phy/phy-c45.c | 43 +++++++++++++++++++++++++++++++++++++++
include/linux/phy.h | 2 ++
2 files changed, 45 insertions(+)
diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c
index 91e3acb9e397..f4816b7d31b3 100644
--- a/drivers/net/phy/phy-c45.c
+++ b/drivers/net/phy/phy-c45.c
@@ -8,6 +8,49 @@
#include <linux/mii.h>
#include <linux/phy.h>
+/**
+ * genphy_c45_pma_can_sleep - checks if the PMA have sleep support
+ * @phydev: target phy_device struct
+ */
+static bool genphy_c45_pma_can_sleep(struct phy_device *phydev)
+{
+ int stat1;
+
+ stat1 = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_STAT1);
+ if (stat1 < 0)
+ return false;
+
+ return !!(stat1 & MDIO_STAT1_LPOWERABLE);
+}
+
+/**
+ * genphy_c45_pma_resume - wakes up the PMA module
+ * @phydev: target phy_device struct
+ */
+int genphy_c45_pma_resume(struct phy_device *phydev)
+{
+ if (!genphy_c45_pma_can_sleep(phydev))
+ return -EOPNOTSUPP;
+
+ return phy_clear_bits_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_CTRL1,
+ MDIO_CTRL1_LPOWER);
+}
+EXPORT_SYMBOL_GPL(genphy_c45_pma_resume);
+
+/**
+ * genphy_c45_pma_suspend - suspends the PMA module
+ * @phydev: target phy_device struct
+ */
+int genphy_c45_pma_suspend(struct phy_device *phydev)
+{
+ if (!genphy_c45_pma_can_sleep(phydev))
+ return -EOPNOTSUPP;
+
+ return phy_set_bits_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_CTRL1,
+ MDIO_CTRL1_LPOWER);
+}
+EXPORT_SYMBOL_GPL(genphy_c45_pma_suspend);
+
/**
* genphy_c45_pma_setup_forced - configures a forced speed
* @phydev: target phy_device struct
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 98fb441dd72e..e3d4d583463b 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1535,6 +1535,8 @@ int genphy_c45_pma_read_abilities(struct phy_device *phydev);
int genphy_c45_read_status(struct phy_device *phydev);
int genphy_c45_config_aneg(struct phy_device *phydev);
int genphy_c45_loopback(struct phy_device *phydev, bool enable);
+int genphy_c45_pma_resume(struct phy_device *phydev);
+int genphy_c45_pma_suspend(struct phy_device *phydev);
/* Generic C45 PHY driver */
extern struct phy_driver genphy_c45_driver;
--
2.31.1
next prev parent reply other threads:[~2021-04-19 16:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-19 16:13 [PATCH v3 0/2] TJA1103 driver Radu Pirea (NXP OSS)
2021-04-19 16:13 ` Radu Pirea (NXP OSS) [this message]
2021-04-19 16:14 ` [PATCH v3 2/2] phy: nxp-c45: add driver for tja1103 Radu Pirea (NXP OSS)
2021-04-19 23:30 ` [PATCH v3 0/2] TJA1103 driver patchwork-bot+netdevbpf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210419161400.260703-2-radu-nicolae.pirea@oss.nxp.com \
--to=radu-nicolae.pirea@oss.nxp.com \
--cc=andrew@lunn.ch \
--cc=davem@davemloft.net \
--cc=hkallweit1@gmail.com \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).