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https://github.com/brain-hackers/u-boot-brain
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net: sh_eth: Add DM and DT support
Add DM capable code into the SH ethernet driver and support probing both from DT and pdata. The legacy non-DM, non-DT support is retained as there are still systems in the tree which are not DM or DT capable. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Cc: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Marek Vasut
Marek Vasut
parent
a220784b14
commit
319202640a
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@ -18,6 +18,13 @@
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#include <linux/errno.h>
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#include <asm/io.h>
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#ifdef CONFIG_DM_ETH
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#include <clk.h>
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#include <dm.h>
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#include <linux/mii.h>
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#include <asm/gpio.h>
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#endif
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#include "sh_eth.h"
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#ifndef CONFIG_SH_ETHER_USE_PORT
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@ -512,6 +519,7 @@ static int sh_eth_start_common(struct sh_eth_dev *eth)
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return 0;
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}
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#ifndef CONFIG_DM_ETH
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static int sh_eth_phy_config_legacy(struct sh_eth_dev *eth)
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{
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int port = eth->port, ret = 0;
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@ -666,6 +674,266 @@ err:
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return ret;
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}
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#else /* CONFIG_DM_ETH */
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struct sh_ether_priv {
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struct sh_eth_dev shdev;
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struct mii_dev *bus;
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void __iomem *iobase;
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struct clk clk;
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struct gpio_desc reset_gpio;
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};
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static int sh_ether_send(struct udevice *dev, void *packet, int len)
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{
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struct sh_ether_priv *priv = dev_get_priv(dev);
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struct sh_eth_dev *eth = &priv->shdev;
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return sh_eth_send_common(eth, packet, len);
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}
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static int sh_ether_recv(struct udevice *dev, int flags, uchar **packetp)
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{
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struct sh_ether_priv *priv = dev_get_priv(dev);
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struct sh_eth_dev *eth = &priv->shdev;
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struct sh_eth_info *port_info = ð->port_info[eth->port];
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uchar *packet = (uchar *)ADDR_TO_P2(port_info->rx_desc_cur->rd2);
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int len;
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len = sh_eth_recv_start(eth);
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if (len > 0) {
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invalidate_cache(packet, len);
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*packetp = packet;
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return len;
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} else {
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len = 0;
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/* Restart the receiver if disabled */
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if (!(sh_eth_read(port_info, EDRRR) & EDRRR_R))
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sh_eth_write(port_info, EDRRR_R, EDRRR);
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return -EAGAIN;
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}
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}
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static int sh_ether_free_pkt(struct udevice *dev, uchar *packet, int length)
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{
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struct sh_ether_priv *priv = dev_get_priv(dev);
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struct sh_eth_dev *eth = &priv->shdev;
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struct sh_eth_info *port_info = ð->port_info[eth->port];
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sh_eth_recv_finish(eth);
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/* Restart the receiver if disabled */
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if (!(sh_eth_read(port_info, EDRRR) & EDRRR_R))
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sh_eth_write(port_info, EDRRR_R, EDRRR);
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return 0;
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}
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static int sh_ether_write_hwaddr(struct udevice *dev)
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{
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struct sh_ether_priv *priv = dev_get_priv(dev);
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struct sh_eth_dev *eth = &priv->shdev;
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struct sh_eth_info *port_info = ð->port_info[eth->port];
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struct eth_pdata *pdata = dev_get_platdata(dev);
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sh_eth_write_hwaddr(port_info, pdata->enetaddr);
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return 0;
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}
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static int sh_eth_phy_config(struct udevice *dev)
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{
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struct sh_ether_priv *priv = dev_get_priv(dev);
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struct eth_pdata *pdata = dev_get_platdata(dev);
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struct sh_eth_dev *eth = &priv->shdev;
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int port = eth->port, ret = 0;
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struct sh_eth_info *port_info = ð->port_info[port];
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struct phy_device *phydev;
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int mask = 0xffffffff;
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phydev = phy_find_by_mask(priv->bus, mask, pdata->phy_interface);
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if (!phydev)
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return -ENODEV;
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phy_connect_dev(phydev, dev);
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port_info->phydev = phydev;
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phy_config(phydev);
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return ret;
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}
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static int sh_ether_start(struct udevice *dev)
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{
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struct sh_ether_priv *priv = dev_get_priv(dev);
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struct eth_pdata *pdata = dev_get_platdata(dev);
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struct sh_eth_dev *eth = &priv->shdev;
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int ret;
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ret = clk_enable(&priv->clk);
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if (ret)
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return ret;
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ret = sh_eth_init_common(eth, pdata->enetaddr);
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if (ret)
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goto err_clk;
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ret = sh_eth_phy_config(dev);
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if (ret) {
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printf(SHETHER_NAME ": phy config timeout\n");
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goto err_start;
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}
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ret = sh_eth_start_common(eth);
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if (ret)
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goto err_start;
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return 0;
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err_start:
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sh_eth_tx_desc_free(eth);
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sh_eth_rx_desc_free(eth);
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err_clk:
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clk_disable(&priv->clk);
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return ret;
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}
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static void sh_ether_stop(struct udevice *dev)
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{
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struct sh_ether_priv *priv = dev_get_priv(dev);
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sh_eth_stop(&priv->shdev);
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clk_disable(&priv->clk);
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}
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static int sh_ether_probe(struct udevice *udev)
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{
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struct eth_pdata *pdata = dev_get_platdata(udev);
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struct sh_ether_priv *priv = dev_get_priv(udev);
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struct sh_eth_dev *eth = &priv->shdev;
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struct mii_dev *mdiodev;
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void __iomem *iobase;
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int ret;
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iobase = map_physmem(pdata->iobase, 0x1000, MAP_NOCACHE);
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priv->iobase = iobase;
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ret = clk_get_by_index(udev, 0, &priv->clk);
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if (ret < 0)
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goto err_mdio_alloc;
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gpio_request_by_name(udev, "reset-gpios", 0, &priv->reset_gpio,
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GPIOD_IS_OUT);
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mdiodev = mdio_alloc();
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if (!mdiodev) {
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ret = -ENOMEM;
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goto err_mdio_alloc;
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}
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mdiodev->read = bb_miiphy_read;
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mdiodev->write = bb_miiphy_write;
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bb_miiphy_buses[0].priv = eth;
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snprintf(mdiodev->name, sizeof(mdiodev->name), udev->name);
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ret = mdio_register(mdiodev);
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if (ret < 0)
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goto err_mdio_register;
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priv->bus = miiphy_get_dev_by_name(udev->name);
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eth->port = CONFIG_SH_ETHER_USE_PORT;
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eth->port_info[eth->port].phy_addr = CONFIG_SH_ETHER_PHY_ADDR;
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eth->port_info[eth->port].iobase =
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(void __iomem *)(BASE_IO_ADDR + 0x800 * eth->port);
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return 0;
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err_mdio_register:
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mdio_free(mdiodev);
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err_mdio_alloc:
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unmap_physmem(priv->iobase, MAP_NOCACHE);
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return ret;
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}
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static int sh_ether_remove(struct udevice *udev)
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{
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struct sh_ether_priv *priv = dev_get_priv(udev);
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struct sh_eth_dev *eth = &priv->shdev;
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struct sh_eth_info *port_info = ð->port_info[eth->port];
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free(port_info->phydev);
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mdio_unregister(priv->bus);
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mdio_free(priv->bus);
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if (dm_gpio_is_valid(&priv->reset_gpio))
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dm_gpio_free(udev, &priv->reset_gpio);
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unmap_physmem(priv->iobase, MAP_NOCACHE);
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return 0;
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}
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static const struct eth_ops sh_ether_ops = {
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.start = sh_ether_start,
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.send = sh_ether_send,
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.recv = sh_ether_recv,
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.free_pkt = sh_ether_free_pkt,
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.stop = sh_ether_stop,
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.write_hwaddr = sh_ether_write_hwaddr,
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};
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int sh_ether_ofdata_to_platdata(struct udevice *dev)
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{
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struct eth_pdata *pdata = dev_get_platdata(dev);
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const char *phy_mode;
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const fdt32_t *cell;
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int ret = 0;
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pdata->iobase = devfdt_get_addr(dev);
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pdata->phy_interface = -1;
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phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode",
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NULL);
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if (phy_mode)
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pdata->phy_interface = phy_get_interface_by_name(phy_mode);
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if (pdata->phy_interface == -1) {
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debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
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return -EINVAL;
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}
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pdata->max_speed = 1000;
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cell = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "max-speed", NULL);
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if (cell)
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pdata->max_speed = fdt32_to_cpu(*cell);
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sprintf(bb_miiphy_buses[0].name, dev->name);
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return ret;
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}
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static const struct udevice_id sh_ether_ids[] = {
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{ .compatible = "renesas,ether-r8a7791" },
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{ }
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};
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U_BOOT_DRIVER(eth_sh_ether) = {
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.name = "sh_ether",
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.id = UCLASS_ETH,
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.of_match = sh_ether_ids,
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.ofdata_to_platdata = sh_ether_ofdata_to_platdata,
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.probe = sh_ether_probe,
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.remove = sh_ether_remove,
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.ops = &sh_ether_ops,
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.priv_auto_alloc_size = sizeof(struct sh_ether_priv),
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.platdata_auto_alloc_size = sizeof(struct eth_pdata),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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#endif
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/******* for bb_miiphy *******/
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static int sh_eth_bb_init(struct bb_miiphy_bus *bus)
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{
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