netdev - [PATCH net-next v10 5/9] net: txgbe: Add SFP module identify

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Date: Thu,  1 Jun 2023 11:01:36 +0800
From: Jiawen Wu <jiawenwu@...stnetic.com>
To: netdev@...r.kernel.org,
	jarkko.nikula@...ux.intel.com,
	andriy.shevchenko@...ux.intel.com,
	mika.westerberg@...ux.intel.com,
	jsd@...ihalf.com,
	Jose.Abreu@...opsys.com,
	andrew@...n.ch,
	hkallweit1@...il.com,
	linux@...linux.org.uk
Cc: linux-i2c@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	mengyuanlou@...-swift.com,
	Jiawen Wu <jiawenwu@...stnetic.com>,
	Piotr Raczynski <piotr.raczynski@...el.com>
Subject: [PATCH net-next v10 5/9] net: txgbe: Add SFP module identify

Register SFP platform device to get modules information.

Signed-off-by: Jiawen Wu <jiawenwu@...stnetic.com>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Reviewed-by: Piotr Raczynski <piotr.raczynski@...el.com>
---
 drivers/net/ethernet/wangxun/Kconfig          |  3 ++
 .../net/ethernet/wangxun/txgbe/txgbe_phy.c    | 28 +++++++++++++++++++
 .../net/ethernet/wangxun/txgbe/txgbe_type.h   |  1 +
 3 files changed, 32 insertions(+)

diff --git a/drivers/net/ethernet/wangxun/Kconfig b/drivers/net/ethernet/wangxun/Kconfig
index 128cc1cb0605..59f3a3f492cf 100644
--- a/drivers/net/ethernet/wangxun/Kconfig
+++ b/drivers/net/ethernet/wangxun/Kconfig
@@ -44,6 +44,9 @@ config TXGBE
 	select REGMAP
 	select I2C
 	select I2C_DESIGNWARE_PLATFORM
+	select PHYLINK
+	select HWMON if TXGBE=y
+	select SFP
 	select LIBWX
 	help
 	  This driver supports Wangxun(R) 10GbE PCI Express family of
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
index 24a729150e08..d95dc131e91b 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
@@ -158,6 +158,25 @@ static int txgbe_i2c_register(struct txgbe *txgbe)
 	return 0;
 }
 
+static int txgbe_sfp_register(struct txgbe *txgbe)
+{
+	struct pci_dev *pdev = txgbe->wx->pdev;
+	struct platform_device_info info = {};
+	struct platform_device *sfp_dev;
+
+	info.parent = &pdev->dev;
+	info.fwnode = software_node_fwnode(txgbe->nodes.group[SWNODE_SFP]);
+	info.name = "sfp";
+	info.id = (pdev->bus->number << 8) | pdev->devfn;
+	sfp_dev = platform_device_register_full(&info);
+	if (IS_ERR(sfp_dev))
+		return PTR_ERR(sfp_dev);
+
+	txgbe->sfp_dev = sfp_dev;
+
+	return 0;
+}
+
 int txgbe_init_phy(struct txgbe *txgbe)
 {
 	int ret;
@@ -180,8 +199,16 @@ int txgbe_init_phy(struct txgbe *txgbe)
 		goto err_unregister_clk;
 	}
 
+	ret = txgbe_sfp_register(txgbe);
+	if (ret) {
+		wx_err(txgbe->wx, "failed to register sfp\n");
+		goto err_unregister_i2c;
+	}
+
 	return 0;
 
+err_unregister_i2c:
+	platform_device_unregister(txgbe->i2c_dev);
 err_unregister_clk:
 	clkdev_drop(txgbe->clock);
 	clk_unregister(txgbe->clk);
@@ -193,6 +220,7 @@ int txgbe_init_phy(struct txgbe *txgbe)
 
 void txgbe_remove_phy(struct txgbe *txgbe)
 {
+	platform_device_unregister(txgbe->sfp_dev);
 	platform_device_unregister(txgbe->i2c_dev);
 	clkdev_drop(txgbe->clock);
 	clk_unregister(txgbe->clk);
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
index 55979abf01f2..fc91e0fc37a6 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
@@ -149,6 +149,7 @@ struct txgbe_nodes {
 struct txgbe {
 	struct wx *wx;
 	struct txgbe_nodes nodes;
+	struct platform_device *sfp_dev;
 	struct platform_device *i2c_dev;
 	struct clk_lookup *clock;
 	struct clk *clk;
-- 
2.27.0