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Message-Id: <20230601054549.10843-2-nikita.shubin@maquefel.me>
Date: Thu, 1 Jun 2023 08:45:25 +0300
From: Nikita Shubin <nikita.shubin@...uefel.me>
To: Alexander Sverdlin <alexander.sverdlin@...il.com>,
Arnd Bergmann <arnd@...db.de>,
Linus Walleij <linus.walleij@...aro.org>,
Hartley Sweeten <hsweeten@...ionengravers.com>,
Russell King <linux@...linux.org.uk>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: Nikita Shubin <nikita.shubin@...uefel.me>,
Michael Peters <mpeters@...eddedTS.com>,
Kris Bahnsen <kris@...eddedTS.com>,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org,
netdev@...r.kernel.org
Subject: [PATCH v1 20/43] net: cirrus: add DT support for Cirrus EP93xx
- find register range from the device tree
- get "copy_addr" from the device tree
- get phy_id from the device tree
Signed-off-by: Nikita Shubin <nikita.shubin@...uefel.me>
---
Notes:
v0 -> v1:
- dropped platform data entirely
- dropped copy_addr
- use phy-handle instead of using non-conventional phy-id
arch/arm/mach-ep93xx/platform.h | 2 +-
drivers/net/ethernet/cirrus/ep93xx_eth.c | 67 +++++++++++++-----------
2 files changed, 37 insertions(+), 32 deletions(-)
diff --git a/arch/arm/mach-ep93xx/platform.h b/arch/arm/mach-ep93xx/platform.h
index 5fb1b919133f..3cf2113491d8 100644
--- a/arch/arm/mach-ep93xx/platform.h
+++ b/arch/arm/mach-ep93xx/platform.h
@@ -5,8 +5,8 @@
#ifndef __ASSEMBLY__
-#include <linux/platform_data/eth-ep93xx.h>
#include <linux/reboot.h>
+#include <linux/platform_data/eth-ep93xx.h>
struct device;
struct i2c_board_info;
diff --git a/drivers/net/ethernet/cirrus/ep93xx_eth.c b/drivers/net/ethernet/cirrus/ep93xx_eth.c
index 8627ab19d470..41096d4830ff 100644
--- a/drivers/net/ethernet/cirrus/ep93xx_eth.c
+++ b/drivers/net/ethernet/cirrus/ep93xx_eth.c
@@ -17,12 +17,11 @@
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
+#include <linux/of.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/slab.h>
-#include <linux/platform_data/eth-ep93xx.h>
-
#define DRV_MODULE_NAME "ep93xx-eth"
#define RX_QUEUE_ENTRIES 64
@@ -738,25 +737,6 @@ static const struct net_device_ops ep93xx_netdev_ops = {
.ndo_set_mac_address = eth_mac_addr,
};
-static struct net_device *ep93xx_dev_alloc(struct ep93xx_eth_data *data)
-{
- struct net_device *dev;
-
- dev = alloc_etherdev(sizeof(struct ep93xx_priv));
- if (dev == NULL)
- return NULL;
-
- eth_hw_addr_set(dev, data->dev_addr);
-
- dev->ethtool_ops = &ep93xx_ethtool_ops;
- dev->netdev_ops = &ep93xx_netdev_ops;
-
- dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
-
- return dev;
-}
-
-
static int ep93xx_eth_remove(struct platform_device *pdev)
{
struct net_device *dev;
@@ -788,27 +768,51 @@ static int ep93xx_eth_remove(struct platform_device *pdev)
static int ep93xx_eth_probe(struct platform_device *pdev)
{
- struct ep93xx_eth_data *data;
struct net_device *dev;
struct ep93xx_priv *ep;
struct resource *mem;
+ void __iomem *base_addr;
+ struct device_node *np;
+ u32 phy_id;
int irq;
int err;
if (pdev == NULL)
return -ENODEV;
- data = dev_get_platdata(&pdev->dev);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
if (!mem || irq < 0)
return -ENXIO;
- dev = ep93xx_dev_alloc(data);
+ base_addr = ioremap(mem->start, resource_size(mem));
+ if (!base_addr) {
+ dev_err(&pdev->dev, "Failed to ioremap ethernet registers\n");
+ return -EIO;
+ }
+
+ np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
+ if (!np) {
+ dev_err(&pdev->dev, "Please provide \"phy-handle\"\n");
+ return -ENODEV;
+ }
+
+ if (of_property_read_u32(np, "reg", &phy_id)) {
+ dev_err(&pdev->dev, "Failed to locate \"phy_id\"\n");
+ return -ENOENT;
+ }
+
+ dev = alloc_etherdev(sizeof(struct ep93xx_priv));
if (dev == NULL) {
err = -ENOMEM;
goto err_out;
}
+
+ eth_hw_addr_set(dev, base_addr + 0x50);
+ dev->ethtool_ops = &ep93xx_ethtool_ops;
+ dev->netdev_ops = &ep93xx_netdev_ops;
+ dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
+
ep = netdev_priv(dev);
ep->dev = dev;
SET_NETDEV_DEV(dev, &pdev->dev);
@@ -824,15 +828,10 @@ static int ep93xx_eth_probe(struct platform_device *pdev)
goto err_out;
}
- ep->base_addr = ioremap(mem->start, resource_size(mem));
- if (ep->base_addr == NULL) {
- dev_err(&pdev->dev, "Failed to ioremap ethernet registers\n");
- err = -EIO;
- goto err_out;
- }
+ ep->base_addr = base_addr;
ep->irq = irq;
- ep->mii.phy_id = data->phy_id;
+ ep->mii.phy_id = phy_id;
ep->mii.phy_id_mask = 0x1f;
ep->mii.reg_num_mask = 0x1f;
ep->mii.dev = dev;
@@ -859,12 +858,18 @@ static int ep93xx_eth_probe(struct platform_device *pdev)
return err;
}
+static const struct of_device_id ep93xx_eth_of_ids[] = {
+ { .compatible = "cirrus,ep9301-eth" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ep93xx_eth_of_ids);
static struct platform_driver ep93xx_eth_driver = {
.probe = ep93xx_eth_probe,
.remove = ep93xx_eth_remove,
.driver = {
.name = "ep93xx-eth",
+ .of_match_table = ep93xx_eth_of_ids,
},
};
--
2.37.4
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