From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381
---
.../net/ethernet/stmicro/stmmac/dwmac-oxnas.c | 172 +++++++++++++++++++++
1 file changed, 172 insertions(+)
create mode 100644 target/linux/oxnas/files/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c
(limited to 'target/linux/oxnas/files/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c')
diff --git a/target/linux/oxnas/files/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c b/target/linux/oxnas/files/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c
new file mode 100644
index 0000000..07f9f44
--- /dev/null
+++ b/target/linux/oxnas/files/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c
@@ -0,0 +1,172 @@
+/* Copyright OpenWrt.org (C) 2015.
+ * Copyright Altera Corporation (C) 2014. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ *
+ * Adopted from dwmac-socfpga.c
+ * Based on code found in mach-oxnas.c
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+
+#include "stmmac.h"
+#include "stmmac_platform.h"
+
+struct oxnas_gmac {
+ struct clk *clk;
+};
+
+static int oxnas_gmac_init(struct platform_device *pdev, void *priv)
+{
+ struct oxnas_gmac *bsp_priv = priv;
+ int ret = 0;
+ unsigned value;
+
+ ret = device_reset(&pdev->dev);
+ if (ret)
+ return ret;
+
+ if (IS_ERR(bsp_priv->clk))
+ return PTR_ERR(bsp_priv->clk);
+ clk_prepare_enable(bsp_priv->clk);
+
+ value = readl(SYS_CTRL_GMAC_CTRL);
+
+ /* Enable GMII_GTXCLK to follow GMII_REFCLK, required for gigabit PHY */
+ value |= BIT(SYS_CTRL_GMAC_CKEN_GTX);
+ /* Use simple mux for 25/125 Mhz clock switching */
+ value |= BIT(SYS_CTRL_GMAC_SIMPLE_MUX);
+ /* set auto switch tx clock source */
+ value |= BIT(SYS_CTRL_GMAC_AUTO_TX_SOURCE);
+ /* enable tx & rx vardelay */
+ value |= BIT(SYS_CTRL_GMAC_CKEN_TX_OUT);
+ value |= BIT(SYS_CTRL_GMAC_CKEN_TXN_OUT);
+ value |= BIT(SYS_CTRL_GMAC_CKEN_TX_IN);
+ value |= BIT(SYS_CTRL_GMAC_CKEN_RX_OUT);
+ value |= BIT(SYS_CTRL_GMAC_CKEN_RXN_OUT);
+ value |= BIT(SYS_CTRL_GMAC_CKEN_RX_IN);
+ writel(value, SYS_CTRL_GMAC_CTRL);
+
+ /* set tx & rx vardelay */
+ value = 0;
+ value |= SYS_CTRL_GMAC_TX_VARDELAY(4);
+ value |= SYS_CTRL_GMAC_TXN_VARDELAY(2);
+ value |= SYS_CTRL_GMAC_RX_VARDELAY(10);
+ value |= SYS_CTRL_GMAC_RXN_VARDELAY(8);
+ writel(value, SYS_CTRL_GMAC_DELAY_CTRL);
+
+ return 0;
+}
+
+static void oxnas_gmac_exit(struct platform_device *pdev, void *priv)
+{
+ struct reset_control *rstc;
+
+ clk_disable_unprepare(priv);
+ devm_clk_put(&pdev->dev, priv);
+
+ rstc = reset_control_get(&pdev->dev, NULL);
+ if (!IS_ERR(rstc)) {
+ reset_control_assert(rstc);
+ reset_control_put(rstc);
+ }
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
+static void *oxnas_gmac_probe(struct platform_device *pdev)
+{
+#else
+static int oxnas_gmac_probe(struct platform_device *pdev)
+{
+ struct plat_stmmacenet_data *plat_dat;
+ struct stmmac_resources stmmac_res;
+ int ret;
+#endif
+ struct device *dev = &pdev->dev;
+ struct oxnas_gmac *bsp_priv;
+
+ bsp_priv = devm_kzalloc(dev, sizeof(*bsp_priv), GFP_KERNEL);
+ if (!bsp_priv)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
+ return ERR_PTR(-ENOMEM);
+#else
+ return -ENOMEM;
+#endif
+ bsp_priv->clk = devm_clk_get(dev, "gmac");
+ if (IS_ERR(bsp_priv->clk))
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
+ return bsp_priv->clk;
+#else
+ return PTR_ERR(bsp_priv->clk);
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
+ return bsp_priv;
+#else
+ 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);
+
+ plat_dat->bsp_priv = bsp_priv;
+ plat_dat->init = oxnas_gmac_init;
+ plat_dat->exit = oxnas_gmac_exit;
+
+ ret = oxnas_gmac_init(pdev, bsp_priv);
+ if (ret)
+ return ret;
+
+ return stmmac_dvr_probe(dev, plat_dat, &stmmac_res);
+#endif
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
+const struct stmmac_of_data oxnas_gmac_data = {
+ .has_gmac = 1,
+ .setup = oxnas_gmac_probe,
+ .init = oxnas_gmac_init,
+ .exit = oxnas_gmac_exit,
+};
+#else
+static const struct of_device_id oxnas_gmac_match[] = {
+ { .compatible = "plxtech,nas782x-gmac" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, oxnas_gmac_match);
+
+static struct platform_driver oxnas_gmac_driver = {
+ .probe = oxnas_gmac_probe,
+ .remove = stmmac_pltfr_remove,
+ .driver = {
+ .name = "oxnas-gmac",
+ .pm = &stmmac_pltfr_pm_ops,
+ .of_match_table = oxnas_gmac_match,
+ },
+};
+module_platform_driver(oxnas_gmac_driver);
+#endif
+
+MODULE_LICENSE("GPL v2");
--
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