| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Romain Perier | 820 | 65.50% | 3 | 17.65% |
| Xing Zheng | 250 | 19.97% | 3 | 17.65% |
| Alexey Brodkin | 114 | 9.11% | 1 | 5.88% |
| Heiko Stübner | 20 | 1.60% | 1 | 5.88% |
| Branislav Radocaj | 19 | 1.52% | 2 | 11.76% |
| Andrew Lunn | 14 | 1.12% | 1 | 5.88% |
| Christophe Jaillet | 8 | 0.64% | 1 | 5.88% |
| Caesar Wang | 3 | 0.24% | 1 | 5.88% |
| Uwe Kleine-König | 2 | 0.16% | 2 | 11.76% |
| Yang Shen | 1 | 0.08% | 1 | 5.88% |
| Thomas Gleixner | 1 | 0.08% | 1 | 5.88% |
| Total | 1252 | 17 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * emac-rockchip.c - Rockchip EMAC specific glue layer * * Copyright (C) 2014 Romain Perier <romain.perier@gmail.com> */ #include <linux/etherdevice.h> #include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of_net.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include "emac.h" #define DRV_NAME "rockchip_emac" struct emac_rockchip_soc_data { unsigned int grf_offset; unsigned int grf_mode_offset; unsigned int grf_speed_offset; bool need_div_macclk; }; struct rockchip_priv_data { struct arc_emac_priv emac; struct regmap *grf; const struct emac_rockchip_soc_data *soc_data; struct regulator *regulator; struct clk *refclk; struct clk *macclk; }; static void emac_rockchip_set_mac_speed(void *priv, unsigned int speed) { struct rockchip_priv_data *emac = priv; u32 speed_offset = emac->soc_data->grf_speed_offset; u32 data; int err = 0; switch (speed) { case 10: data = (1 << (speed_offset + 16)) | (0 << speed_offset); break; case 100: data = (1 << (speed_offset + 16)) | (1 << speed_offset); break; default: pr_err("speed %u not supported\n", speed); return; } err = regmap_write(emac->grf, emac->soc_data->grf_offset, data); if (err) pr_err("unable to apply speed %u to grf (%d)\n", speed, err); } static const struct emac_rockchip_soc_data emac_rk3036_emac_data = { .grf_offset = 0x140, .grf_mode_offset = 8, .grf_speed_offset = 9, .need_div_macclk = 1, }; static const struct emac_rockchip_soc_data emac_rk3066_emac_data = { .grf_offset = 0x154, .grf_mode_offset = 0, .grf_speed_offset = 1, .need_div_macclk = 0, }; static const struct emac_rockchip_soc_data emac_rk3188_emac_data = { .grf_offset = 0x0a4, .grf_mode_offset = 0, .grf_speed_offset = 1, .need_div_macclk = 0, }; static const struct of_device_id emac_rockchip_dt_ids[] = { { .compatible = "rockchip,rk3036-emac", .data = &emac_rk3036_emac_data, }, { .compatible = "rockchip,rk3066-emac", .data = &emac_rk3066_emac_data, }, { .compatible = "rockchip,rk3188-emac", .data = &emac_rk3188_emac_data, }, { /* Sentinel */ } }; MODULE_DEVICE_TABLE(of, emac_rockchip_dt_ids); static int emac_rockchip_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct net_device *ndev; struct rockchip_priv_data *priv; const struct of_device_id *match; phy_interface_t interface; u32 data; int err; if (!pdev->dev.of_node) return -ENODEV; ndev = alloc_etherdev(sizeof(struct rockchip_priv_data)); if (!ndev) return -ENOMEM; platform_set_drvdata(pdev, ndev); SET_NETDEV_DEV(ndev, dev); priv = netdev_priv(ndev); priv->emac.drv_name = DRV_NAME; priv->emac.set_mac_speed = emac_rockchip_set_mac_speed; err = of_get_phy_mode(dev->of_node, &interface); if (err) goto out_netdev; /* RK3036/RK3066/RK3188 SoCs only support RMII */ if (interface != PHY_INTERFACE_MODE_RMII) { dev_err(dev, "unsupported phy interface mode %d\n", interface); err = -ENOTSUPP; goto out_netdev; } priv->grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf"); if (IS_ERR(priv->grf)) { dev_err(dev, "failed to retrieve global register file (%ld)\n", PTR_ERR(priv->grf)); err = PTR_ERR(priv->grf); goto out_netdev; } match = of_match_node(emac_rockchip_dt_ids, dev->of_node); priv->soc_data = match->data; priv->emac.clk = devm_clk_get(dev, "hclk"); if (IS_ERR(priv->emac.clk)) { dev_err(dev, "failed to retrieve host clock (%ld)\n", PTR_ERR(priv->emac.clk)); err = PTR_ERR(priv->emac.clk); goto out_netdev; } priv->refclk = devm_clk_get(dev, "macref"); if (IS_ERR(priv->refclk)) { dev_err(dev, "failed to retrieve reference clock (%ld)\n", PTR_ERR(priv->refclk)); err = PTR_ERR(priv->refclk); goto out_netdev; } err = clk_prepare_enable(priv->refclk); if (err) { dev_err(dev, "failed to enable reference clock (%d)\n", err); goto out_netdev; } /* Optional regulator for PHY */ priv->regulator = devm_regulator_get_optional(dev, "phy"); if (IS_ERR(priv->regulator)) { if (PTR_ERR(priv->regulator) == -EPROBE_DEFER) { err = -EPROBE_DEFER; goto out_clk_disable; } dev_err(dev, "no regulator found\n"); priv->regulator = NULL; } if (priv->regulator) { err = regulator_enable(priv->regulator); if (err) { dev_err(dev, "failed to enable phy-supply (%d)\n", err); goto out_clk_disable; } } /* Set speed 100M */ data = (1 << (priv->soc_data->grf_speed_offset + 16)) | (1 << priv->soc_data->grf_speed_offset); /* Set RMII mode */ data |= (1 << (priv->soc_data->grf_mode_offset + 16)) | (0 << priv->soc_data->grf_mode_offset); err = regmap_write(priv->grf, priv->soc_data->grf_offset, data); if (err) { dev_err(dev, "unable to apply initial settings to grf (%d)\n", err); goto out_regulator_disable; } /* RMII interface needs always a rate of 50MHz */ err = clk_set_rate(priv->refclk, 50000000); if (err) { dev_err(dev, "failed to change reference clock rate (%d)\n", err); goto out_regulator_disable; } if (priv->soc_data->need_div_macclk) { priv->macclk = devm_clk_get(dev, "macclk"); if (IS_ERR(priv->macclk)) { dev_err(dev, "failed to retrieve mac clock (%ld)\n", PTR_ERR(priv->macclk)); err = PTR_ERR(priv->macclk); goto out_regulator_disable; } err = clk_prepare_enable(priv->macclk); if (err) { dev_err(dev, "failed to enable mac clock (%d)\n", err); goto out_regulator_disable; } /* RMII TX/RX needs always a rate of 25MHz */ err = clk_set_rate(priv->macclk, 25000000); if (err) { dev_err(dev, "failed to change mac clock rate (%d)\n", err); goto out_clk_disable_macclk; } } err = arc_emac_probe(ndev, interface); if (err) { dev_err(dev, "failed to probe arc emac (%d)\n", err); goto out_clk_disable_macclk; } return 0; out_clk_disable_macclk: if (priv->soc_data->need_div_macclk) clk_disable_unprepare(priv->macclk); out_regulator_disable: if (priv->regulator) regulator_disable(priv->regulator); out_clk_disable: clk_disable_unprepare(priv->refclk); out_netdev: free_netdev(ndev); return err; } static void emac_rockchip_remove(struct platform_device *pdev) { struct net_device *ndev = platform_get_drvdata(pdev); struct rockchip_priv_data *priv = netdev_priv(ndev); arc_emac_remove(ndev); clk_disable_unprepare(priv->refclk); if (priv->regulator) regulator_disable(priv->regulator); if (priv->soc_data->need_div_macclk) clk_disable_unprepare(priv->macclk); free_netdev(ndev); } static struct platform_driver emac_rockchip_driver = { .probe = emac_rockchip_probe, .remove = emac_rockchip_remove, .driver = { .name = DRV_NAME, .of_match_table = emac_rockchip_dt_ids, }, }; module_platform_driver(emac_rockchip_driver); MODULE_AUTHOR("Romain Perier <romain.perier@gmail.com>"); MODULE_DESCRIPTION("Rockchip EMAC platform driver"); MODULE_LICENSE("GPL");