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Date: Thu, 3 Nov 2022 17:06:48 -0400
From: Sean Anderson <sean.anderson@...o.com>
To: Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org
Cc: Vladimir Oltean <olteanv@...il.com>,
Eric Dumazet <edumazet@...gle.com>,
Paolo Abeni <pabeni@...hat.com>,
Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org,
Andrew Lunn <andrew@...n.ch>,
Ioana Ciornei <ioana.ciornei@....com>,
Madalin Bucur <madalin.bucur@....com>,
"David S . Miller" <davem@...emloft.net>,
Sean Anderson <sean.anderson@...o.com>
Subject: [PATCH net-next v2 09/11] [DO NOT MERGE] net: dpaa: Convert to use PCS subsystem
This converts the ENETC driver to use the PCS subsystem, instead of
attaching the Lynx library to an MDIO device. The control flow is now a
bit different, since we don't know whether pcs-handle-names necessarily
exists.
Signed-off-by: Sean Anderson <sean.anderson@...o.com>
---
Changes in v2:
- Split off from the lynx PCS patch
.../net/ethernet/freescale/fman/fman_memac.c | 118 ++++++------------
1 file changed, 41 insertions(+), 77 deletions(-)
diff --git a/drivers/net/ethernet/freescale/fman/fman_memac.c b/drivers/net/ethernet/freescale/fman/fman_memac.c
index 9349f841bd06..a88fcfbcb5e6 100644
--- a/drivers/net/ethernet/freescale/fman/fman_memac.c
+++ b/drivers/net/ethernet/freescale/fman/fman_memac.c
@@ -11,7 +11,7 @@
#include <linux/slab.h>
#include <linux/io.h>
-#include <linux/pcs-lynx.h>
+#include <linux/pcs.h>
#include <linux/phy.h>
#include <linux/phy_fixed.h>
#include <linux/phy/phy.h>
@@ -974,25 +974,17 @@ static int memac_init(struct fman_mac *memac)
return 0;
}
-static void pcs_put(struct phylink_pcs *pcs)
-{
- struct mdio_device *mdiodev;
-
- if (IS_ERR_OR_NULL(pcs))
- return;
-
- mdiodev = lynx_get_mdio_device(pcs);
- lynx_pcs_destroy(pcs);
- mdio_device_free(mdiodev);
-}
-
static int memac_free(struct fman_mac *memac)
{
free_init_resources(memac);
- pcs_put(memac->sgmii_pcs);
- pcs_put(memac->qsgmii_pcs);
- pcs_put(memac->xfi_pcs);
+ if (!IS_ERR(memac->xfi_pcs))
+ pcs_put(memac->dev_id->dev, memac->xfi_pcs);
+ if (!IS_ERR(memac->qsgmii_pcs))
+ pcs_put(memac->dev_id->dev, memac->qsgmii_pcs);
+ if (!IS_ERR(memac->sgmii_pcs))
+ pcs_put(memac->dev_id->dev, memac->sgmii_pcs);
+
kfree(memac->memac_drv_param);
kfree(memac);
@@ -1039,25 +1031,6 @@ static struct fman_mac *memac_config(struct mac_device *mac_dev,
return memac;
}
-static struct phylink_pcs *memac_pcs_create(struct device_node *mac_node,
- int index)
-{
- struct device_node *node;
- struct mdio_device *mdiodev = NULL;
- struct phylink_pcs *pcs;
-
- node = of_parse_phandle(mac_node, "pcsphy-handle", index);
- if (node && of_device_is_available(node))
- mdiodev = of_mdio_find_device(node);
- of_node_put(node);
-
- if (!mdiodev)
- return ERR_PTR(-EPROBE_DEFER);
-
- pcs = lynx_pcs_create(mdiodev);
- return pcs;
-}
-
static bool memac_supports(struct mac_device *mac_dev, phy_interface_t iface)
{
/* If there's no serdes device, assume that it's been configured for
@@ -1076,7 +1049,6 @@ int memac_initialization(struct mac_device *mac_dev,
{
int err;
struct device_node *fixed;
- struct phylink_pcs *pcs;
struct fman_mac *memac;
unsigned long capabilities;
unsigned long *supported;
@@ -1101,56 +1073,48 @@ int memac_initialization(struct mac_device *mac_dev,
memac->memac_drv_param->max_frame_length = fman_get_max_frm();
memac->memac_drv_param->reset_on_init = true;
- err = of_property_match_string(mac_node, "pcs-handle-names", "xfi");
- if (err >= 0) {
- memac->xfi_pcs = memac_pcs_create(mac_node, err);
- if (IS_ERR(memac->xfi_pcs)) {
- err = PTR_ERR(memac->xfi_pcs);
- dev_err_probe(mac_dev->dev, err, "missing xfi pcs\n");
- goto _return_fm_mac_free;
- }
- } else if (err != -EINVAL && err != -ENODATA) {
+ memac->xfi_pcs = pcs_get_optional(mac_dev->dev, "xfi");
+ if (IS_ERR(memac->xfi_pcs)) {
+ err = PTR_ERR(memac->xfi_pcs);
+ dev_err_probe(mac_dev->dev, err, "missing xfi pcs\n");
goto _return_fm_mac_free;
}
- err = of_property_match_string(mac_node, "pcs-handle-names", "qsgmii");
- if (err >= 0) {
- memac->qsgmii_pcs = memac_pcs_create(mac_node, err);
- if (IS_ERR(memac->qsgmii_pcs)) {
- err = PTR_ERR(memac->qsgmii_pcs);
- dev_err_probe(mac_dev->dev, err,
- "missing qsgmii pcs\n");
- goto _return_fm_mac_free;
- }
- } else if (err != -EINVAL && err != -ENODATA) {
+ memac->qsgmii_pcs = pcs_get_optional(mac_dev->dev, "qsgmii");
+ if (IS_ERR(memac->qsgmii_pcs)) {
+ err = PTR_ERR(memac->qsgmii_pcs);
+ dev_err_probe(mac_dev->dev, err, "missing qsgmii pcs\n");
goto _return_fm_mac_free;
}
- /* For compatibility, if pcs-handle-names is missing, we assume this
- * phy is the first one in pcsphy-handle
- */
- err = of_property_match_string(mac_node, "pcs-handle-names", "sgmii");
- if (err == -EINVAL || err == -ENODATA)
- pcs = memac_pcs_create(mac_node, 0);
- else if (err < 0)
- goto _return_fm_mac_free;
- else
- pcs = memac_pcs_create(mac_node, err);
-
- if (IS_ERR(pcs)) {
- err = PTR_ERR(pcs);
- dev_err_probe(mac_dev->dev, err, "missing pcs\n");
+ memac->sgmii_pcs = pcs_get_optional(mac_dev->dev, "sgmii");
+ if (IS_ERR(memac->sgmii_pcs)) {
+ err = PTR_ERR(memac->sgmii_pcs);
+ dev_err_probe(mac_dev->dev, err, "missing sgmii pcs\n");
goto _return_fm_mac_free;
}
- /* If err is set here, it means that pcs-handle-names was missing above
- * (and therefore that xfi_pcs cannot be set). If we are defaulting to
- * XGMII, assume this is for XFI. Otherwise, assume it is for SGMII.
- */
- if (err && mac_dev->phy_if == PHY_INTERFACE_MODE_XGMII)
- memac->xfi_pcs = pcs;
- else
- memac->sgmii_pcs = pcs;
+ if (!memac->sgmii_pcs && !memac->qsgmii_pcs && !memac->xfi_pcs) {
+ struct phylink_pcs *pcs;
+
+ /* For compatibility, if pcs-handle-names is missing, we assume
+ * this phy is the first one in pcsphy-handle
+ */
+ pcs = pcs_get_optional(mac_dev->dev, NULL);
+ if (IS_ERR(pcs)) {
+ err = PTR_ERR(pcs);
+ dev_err_probe(mac_dev->dev, err, "missing pcs\n");
+ goto _return_fm_mac_free;
+ }
+
+ /* If the interface mode is XGMII, assume this is for XFI.
+ * Otherwise, assume this PCS is for SGMII.
+ */
+ if (memac->dev_id->phy_if == PHY_INTERFACE_MODE_XGMII)
+ memac->xfi_pcs = pcs;
+ else
+ memac->sgmii_pcs = pcs;
+ }
memac->serdes = devm_of_phy_get(mac_dev->dev, mac_node, "serdes");
err = PTR_ERR(memac->serdes);
--
2.35.1.1320.gc452695387.dirty
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