1 // SPDX-License-Identifier: GPL-2.0-only
2 /* 10G controller driver for Samsung SoCs
4 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com
7 * Author: Siva Reddy Kallam <siva.kallam@samsung.com>
10 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
12 #include <linux/etherdevice.h>
14 #include <linux/module.h>
15 #include <linux/netdevice.h>
17 #include <linux/of_irq.h>
18 #include <linux/of_net.h>
19 #include <linux/phy.h>
20 #include <linux/platform_device.h>
21 #include <linux/sxgbe_platform.h>
23 #include "sxgbe_common.h"
24 #include "sxgbe_reg.h"
27 static int sxgbe_probe_config_dt(struct platform_device *pdev,
28 struct sxgbe_plat_data *plat,
31 struct device_node *np = pdev->dev.of_node;
32 struct sxgbe_dma_cfg *dma_cfg;
37 *mac = of_get_mac_address(np);
38 plat->interface = of_get_phy_mode(np);
40 plat->bus_id = of_alias_get_id(np, "ethernet");
44 plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
45 sizeof(*plat->mdio_bus_data),
47 if (!plat->mdio_bus_data)
50 dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), GFP_KERNEL);
54 plat->dma_cfg = dma_cfg;
55 of_property_read_u32(np, "samsung,pbl", &dma_cfg->pbl);
56 if (of_property_read_u32(np, "samsung,burst-map", &dma_cfg->burst_map) == 0)
57 dma_cfg->fixed_burst = true;
62 static int sxgbe_probe_config_dt(struct platform_device *pdev,
63 struct sxgbe_plat_data *plat,
68 #endif /* CONFIG_OF */
71 * sxgbe_platform_probe
72 * @pdev: platform device pointer
73 * Description: platform_device probe function. It allocates
74 * the necessary resources and invokes the main to init
75 * the net device, register the mdio bus etc.
77 static int sxgbe_platform_probe(struct platform_device *pdev)
81 struct device *dev = &pdev->dev;
83 struct sxgbe_priv_data *priv = NULL;
84 struct sxgbe_plat_data *plat_dat = NULL;
85 const char *mac = NULL;
86 struct net_device *ndev = platform_get_drvdata(pdev);
87 struct device_node *node = dev->of_node;
89 /* Get memory resource */
90 addr = devm_platform_ioremap_resource(pdev, 0);
94 if (pdev->dev.of_node) {
95 plat_dat = devm_kzalloc(&pdev->dev,
96 sizeof(struct sxgbe_plat_data),
101 ret = sxgbe_probe_config_dt(pdev, plat_dat, &mac);
103 pr_err("%s: main dt probe failed\n", __func__);
108 priv = sxgbe_drv_probe(&(pdev->dev), plat_dat, addr);
110 pr_err("%s: main driver probe failed\n", __func__);
114 /* Get the SXGBE common INT information */
115 priv->irq = irq_of_parse_and_map(node, 0);
116 if (priv->irq <= 0) {
117 dev_err(dev, "sxgbe common irq parsing failed\n");
121 /* Get MAC address if available (DT) */
122 if (!IS_ERR_OR_NULL(mac))
123 ether_addr_copy(priv->dev->dev_addr, mac);
125 /* Get the TX/RX IRQ numbers */
126 for (i = 0, chan = 1; i < SXGBE_TX_QUEUES; i++) {
127 priv->txq[i]->irq_no = irq_of_parse_and_map(node, chan++);
128 if (priv->txq[i]->irq_no <= 0) {
129 dev_err(dev, "sxgbe tx irq parsing failed\n");
130 goto err_tx_irq_unmap;
134 for (i = 0; i < SXGBE_RX_QUEUES; i++) {
135 priv->rxq[i]->irq_no = irq_of_parse_and_map(node, chan++);
136 if (priv->rxq[i]->irq_no <= 0) {
137 dev_err(dev, "sxgbe rx irq parsing failed\n");
138 goto err_rx_irq_unmap;
142 priv->lpi_irq = irq_of_parse_and_map(node, chan);
143 if (priv->lpi_irq <= 0) {
144 dev_err(dev, "sxgbe lpi irq parsing failed\n");
145 goto err_rx_irq_unmap;
148 platform_set_drvdata(pdev, priv->dev);
150 pr_debug("platform driver registration completed\n");
156 irq_dispose_mapping(priv->rxq[i]->irq_no);
160 irq_dispose_mapping(priv->txq[i]->irq_no);
161 irq_dispose_mapping(priv->irq);
163 sxgbe_drv_remove(ndev);
169 * sxgbe_platform_remove
170 * @pdev: platform device pointer
171 * Description: this function calls the main to free the net resources
172 * and calls the platforms hook and release the resources (e.g. mem).
174 static int sxgbe_platform_remove(struct platform_device *pdev)
176 struct net_device *ndev = platform_get_drvdata(pdev);
177 int ret = sxgbe_drv_remove(ndev);
183 static int sxgbe_platform_suspend(struct device *dev)
185 struct net_device *ndev = dev_get_drvdata(dev);
187 return sxgbe_suspend(ndev);
190 static int sxgbe_platform_resume(struct device *dev)
192 struct net_device *ndev = dev_get_drvdata(dev);
194 return sxgbe_resume(ndev);
197 static int sxgbe_platform_freeze(struct device *dev)
199 struct net_device *ndev = dev_get_drvdata(dev);
201 return sxgbe_freeze(ndev);
204 static int sxgbe_platform_restore(struct device *dev)
206 struct net_device *ndev = dev_get_drvdata(dev);
208 return sxgbe_restore(ndev);
211 static const struct dev_pm_ops sxgbe_platform_pm_ops = {
212 .suspend = sxgbe_platform_suspend,
213 .resume = sxgbe_platform_resume,
214 .freeze = sxgbe_platform_freeze,
215 .thaw = sxgbe_platform_restore,
216 .restore = sxgbe_platform_restore,
219 static const struct dev_pm_ops sxgbe_platform_pm_ops;
220 #endif /* CONFIG_PM */
222 static const struct of_device_id sxgbe_dt_ids[] = {
223 { .compatible = "samsung,sxgbe-v2.0a"},
226 MODULE_DEVICE_TABLE(of, sxgbe_dt_ids);
228 static struct platform_driver sxgbe_platform_driver = {
229 .probe = sxgbe_platform_probe,
230 .remove = sxgbe_platform_remove,
232 .name = SXGBE_RESOURCE_NAME,
233 .pm = &sxgbe_platform_pm_ops,
234 .of_match_table = of_match_ptr(sxgbe_dt_ids),
238 int sxgbe_register_platform(void)
242 err = platform_driver_register(&sxgbe_platform_driver);
244 pr_err("failed to register the platform driver\n");
249 void sxgbe_unregister_platform(void)
251 platform_driver_unregister(&sxgbe_platform_driver);