4f810186ab
1. update cv182x/cv183x configuration file 2. update cv181x/cv180x configuration file 3. update clk driver for cvitek 4. update dma driver for cvitek 5. update soc driver for cvitek 6. porting cvitek ion driver from kernel-4.19 7. compatible with riscv Change-Id: Icff9fafe0ebe7d6bab824bbadb952e08bdc66c19
160 lines
3.8 KiB
C
160 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* dwmac-cvitek.c - Bitmain DWMAC specific glue layer
|
|
*
|
|
* Copyright (c) 2019 Cvitek Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/stmmac.h>
|
|
#include <linux/module.h>
|
|
#include <linux/phy.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/of_net.h>
|
|
#include <linux/of_gpio.h>
|
|
#include <linux/io.h>
|
|
|
|
#include "stmmac_platform.h"
|
|
|
|
struct cvitek_mac {
|
|
struct device *dev;
|
|
struct reset_control *rst;
|
|
struct clk *clk_tx;
|
|
struct clk *gate_clk_500m;
|
|
struct clk *gate_clk_axi4;
|
|
struct gpio_desc *reset;
|
|
};
|
|
|
|
static u64 bm_dma_mask = DMA_BIT_MASK(40);
|
|
|
|
static int bm_eth_reset_phy(struct platform_device *pdev)
|
|
{
|
|
struct device_node *np = pdev->dev.of_node;
|
|
int phy_reset_gpio;
|
|
u32 ephy_addr = 0x0;
|
|
void __iomem *ephy_reg;
|
|
|
|
if (!np)
|
|
return 0;
|
|
|
|
of_property_read_u32(np, "ephy_ctl_reg", &ephy_addr);
|
|
|
|
if (ephy_addr) {
|
|
ephy_reg = ioremap(ephy_addr, 0x10);
|
|
writel(readl(ephy_reg) & 0xFFFFFFFC, ephy_reg);
|
|
mdelay(2);
|
|
iounmap(ephy_reg);
|
|
}
|
|
|
|
phy_reset_gpio = of_get_named_gpio(np, "phy-reset-gpios", 0);
|
|
|
|
if (phy_reset_gpio < 0)
|
|
return 0;
|
|
|
|
if (gpio_request(phy_reset_gpio, "eth-phy-reset"))
|
|
return 0;
|
|
|
|
/* RESET_PU */
|
|
gpio_direction_output(phy_reset_gpio, 0);
|
|
mdelay(20);
|
|
|
|
gpio_direction_output(phy_reset_gpio, 1);
|
|
/* RC charging time */
|
|
mdelay(60);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void bm_dwmac_exit(struct platform_device *pdev, void *priv)
|
|
{
|
|
struct cvitek_mac *bsp_priv = priv;
|
|
|
|
clk_disable_unprepare(bsp_priv->gate_clk_500m);
|
|
clk_disable_unprepare(bsp_priv->gate_clk_axi4);
|
|
}
|
|
|
|
static int bm_dwmac_probe(struct platform_device *pdev)
|
|
{
|
|
struct plat_stmmacenet_data *plat_dat;
|
|
struct stmmac_resources stmmac_res;
|
|
struct cvitek_mac *bsp_priv = NULL;
|
|
int ret;
|
|
|
|
pdev->dev.dma_mask = &bm_dma_mask;
|
|
pdev->dev.coherent_dma_mask = bm_dma_mask;
|
|
|
|
bm_eth_reset_phy(pdev);
|
|
|
|
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);
|
|
|
|
ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
|
|
if (ret)
|
|
goto err_remove_config_dt;
|
|
|
|
bsp_priv = devm_kzalloc(&pdev->dev, sizeof(*bsp_priv), GFP_KERNEL);
|
|
if (!bsp_priv)
|
|
return PTR_ERR(bsp_priv);
|
|
|
|
bsp_priv->dev = &pdev->dev;
|
|
|
|
/* clock setup */
|
|
bsp_priv->gate_clk_500m = devm_clk_get(&pdev->dev, "clk_500m_eth");
|
|
|
|
if (IS_ERR(bsp_priv->gate_clk_500m))
|
|
dev_warn(&pdev->dev, "Cannot get clk_500m_eth!\n");
|
|
else
|
|
clk_prepare_enable(bsp_priv->gate_clk_500m);
|
|
|
|
bsp_priv->gate_clk_axi4 = devm_clk_get(&pdev->dev, "clk_axi4_eth");
|
|
|
|
if (IS_ERR(bsp_priv->gate_clk_axi4))
|
|
dev_warn(&pdev->dev, "Cannot get gate_clk_axi4!\n");
|
|
else
|
|
clk_prepare_enable(bsp_priv->gate_clk_axi4);
|
|
|
|
plat_dat->bsp_priv = bsp_priv;
|
|
plat_dat->exit = bm_dwmac_exit;
|
|
|
|
return 0;
|
|
|
|
err_remove_config_dt:
|
|
stmmac_remove_config_dt(pdev, plat_dat);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct of_device_id bm_dwmac_match[] = {
|
|
{ .compatible = "cvitek,ethernet" },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, bm_dwmac_match);
|
|
|
|
static struct platform_driver bm_dwmac_driver = {
|
|
.probe = bm_dwmac_probe,
|
|
.remove = stmmac_pltfr_remove,
|
|
.driver = {
|
|
.name = "bm-dwmac",
|
|
.pm = &stmmac_pltfr_pm_ops,
|
|
.of_match_table = bm_dwmac_match,
|
|
},
|
|
};
|
|
module_platform_driver(bm_dwmac_driver);
|
|
|
|
MODULE_AUTHOR("Wei Huang<wei.huang01@bitmain.com>");
|
|
MODULE_DESCRIPTION("Cvitek DWMAC specific glue layer");
|
|
MODULE_LICENSE("GPL");
|