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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
new file mode 100644
index 000000000..16fb66a0c
--- /dev/null
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Amlogic Meson6 and Meson8 DWMAC glue layer
+ *
+ * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
+ */
+
+#include <linux/device.h>
+#include <linux/ethtool.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/stmmac.h>
+
+#include "stmmac_platform.h"
+
+#define ETHMAC_SPEED_100 BIT(1)
+
+struct meson_dwmac {
+ struct device *dev;
+ void __iomem *reg;
+};
+
+static void meson6_dwmac_fix_mac_speed(void *priv, unsigned int speed)
+{
+ struct meson_dwmac *dwmac = priv;
+ unsigned int val;
+
+ val = readl(dwmac->reg);
+
+ switch (speed) {
+ case SPEED_10:
+ val &= ~ETHMAC_SPEED_100;
+ break;
+ case SPEED_100:
+ val |= ETHMAC_SPEED_100;
+ break;
+ }
+
+ writel(val, dwmac->reg);
+}
+
+static int meson6_dwmac_probe(struct platform_device *pdev)
+{
+ struct plat_stmmacenet_data *plat_dat;
+ struct stmmac_resources stmmac_res;
+ struct meson_dwmac *dwmac;
+ int ret;
+
+ ret = stmmac_get_platform_resources(pdev, &stmmac_res);
+ if (ret)
+ return ret;
+
+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+ dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
+ if (!dwmac) {
+ ret = -ENOMEM;
+ goto err_remove_config_dt;
+ }
+
+ dwmac->reg = devm_platform_ioremap_resource(pdev, 1);
+ if (IS_ERR(dwmac->reg)) {
+ ret = PTR_ERR(dwmac->reg);
+ goto err_remove_config_dt;
+ }
+
+ plat_dat->bsp_priv = dwmac;
+ plat_dat->fix_mac_speed = meson6_dwmac_fix_mac_speed;
+
+ ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
+ if (ret)
+ goto err_remove_config_dt;
+
+ return 0;
+
+err_remove_config_dt:
+ stmmac_remove_config_dt(pdev, plat_dat);
+
+ return ret;
+}
+
+static const struct of_device_id meson6_dwmac_match[] = {
+ { .compatible = "amlogic,meson6-dwmac" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, meson6_dwmac_match);
+
+static struct platform_driver meson6_dwmac_driver = {
+ .probe = meson6_dwmac_probe,
+ .remove = stmmac_pltfr_remove,
+ .driver = {
+ .name = "meson6-dwmac",
+ .pm = &stmmac_pltfr_pm_ops,
+ .of_match_table = meson6_dwmac_match,
+ },
+};
+module_platform_driver(meson6_dwmac_driver);
+
+MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
+MODULE_DESCRIPTION("Amlogic Meson6 and Meson8 DWMAC glue layer");
+MODULE_LICENSE("GPL v2");