From: Jagan Teki jagan@amarulasolutions.com

This patch add driver model support for fec_mxc driver.

Cc: Simon Glass sjg@chromium.org Cc: Joe Hershberger joe.hershberger@ni.com Cc: Peng Fan peng.fan@nxp.com Cc: Stefano Babic sbabic@denx.de Cc: Michael Trimarchi michael@amarulasolutions.com Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- drivers/net/fec_mxc.c | 273 +++++++++++++++++++++++++++++++++++++++++++++----- drivers/net/fec_mxc.h | 11 ++ 2 files changed, 258 insertions(+), 26 deletions(-)

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index 8e3b839..a58ab19 100644 --- a/drivers/net/fec_mxc.c +++ b/drivers/net/fec_mxc.c @@ -9,6 +9,7 @@ */

#include <common.h> +#include <dm.h> #include <malloc.h> #include <memalign.h> #include <net.h> @@ -362,17 +363,32 @@ static void fec_rbd_clean(int last, struct fec_bd *pRbd) writew(0, &pRbd->data_length); }

+#ifdef CONFIG_DM_ETH +static int fec_get_hwaddr(struct udevice *dev, int dev_id, + unsigned char *mac) +#else static int fec_get_hwaddr(struct eth_device *dev, int dev_id, unsigned char *mac) +#endif { imx_get_mac_from_fuse(dev_id, mac); return !is_valid_ethaddr(mac); }

+#ifdef CONFIG_DM_ETH +static int fecmxc_set_hwaddr(struct udevice *dev) +#else static int fec_set_hwaddr(struct eth_device *dev) +#endif { +#ifdef CONFIG_DM_ETH + struct fec_priv *fec = dev_get_priv(dev); + struct eth_pdata *pdata = dev_get_platdata(dev); + uchar *mac = pdata->enetaddr; +#else uchar *mac = dev->enetaddr; struct fec_priv *fec = (struct fec_priv *)dev->priv; +#endif

writel(0, &fec->eth->iaddr1); writel(0, &fec->eth->iaddr2); @@ -427,9 +443,17 @@ static void fec_reg_setup(struct fec_priv *fec) * Start the FEC engine * @param[in] dev Our device to handle */ +#ifdef CONFIG_DM_ETH +static int fec_open(struct udevice *dev) +#else static int fec_open(struct eth_device *edev) +#endif { +#ifdef CONFIG_DM_ETH + struct fec_priv *fec = dev_get_priv(dev); +#else struct fec_priv *fec = (struct fec_priv *)edev->priv; +#endif int speed; uint32_t addr, size; int i; @@ -535,14 +559,26 @@ static int fec_open(struct eth_device *edev) return 0; }

+#ifdef CONFIG_DM_ETH +static int fecmxc_init(struct udevice *dev) +#else static int fec_init(struct eth_device *dev, bd_t* bd) +#endif { +#ifdef CONFIG_DM_ETH + struct fec_priv *fec = dev_get_priv(dev); +#else struct fec_priv *fec = (struct fec_priv *)dev->priv; +#endif uint32_t mib_ptr = (uint32_t)&fec->eth->rmon_t_drop; int i;

/* Initialize MAC address */ +#ifdef CONFIG_DM_ETH + fecmxc_set_hwaddr(dev); +#else fec_set_hwaddr(dev); +#endif

/* * Setup transmit descriptors, there are two in total. @@ -596,9 +632,17 @@ static int fec_init(struct eth_device *dev, bd_t* bd) * Halt the FEC engine * @param[in] dev Our device to handle */ +#ifdef CONFIG_DM_ETH +static void fecmxc_halt(struct udevice *dev) +#else static void fec_halt(struct eth_device *dev) +#endif { +#ifdef CONFIG_DM_ETH + struct fec_priv *fec = dev_get_priv(dev); +#else struct fec_priv *fec = (struct fec_priv *)dev->priv; +#endif int counter = 0xffff;

/* @@ -638,7 +682,11 @@ static void fec_halt(struct eth_device *dev) * @param[in] length Data count in bytes * @return 0 on success */ +#ifdef CONFIG_DM_ETH +static int fecmxc_send(struct udevice *dev, void *packet, int length) +#else static int fec_send(struct eth_device *dev, void *packet, int length) +#endif { unsigned int status; uint32_t size, end; @@ -650,7 +698,11 @@ static int fec_send(struct eth_device *dev, void *packet, int length) * This routine transmits one frame. This routine only accepts * 6-byte Ethernet addresses. */ +#ifdef CONFIG_DM_ETH + struct fec_priv *fec = dev_get_priv(dev); +#else struct fec_priv *fec = (struct fec_priv *)dev->priv; +#endif

/* * Check for valid length of data. @@ -783,9 +835,17 @@ out: * @param[in] dev Our ethernet device to handle * @return Length of packet read */ +#ifdef CONFIG_DM_ETH +static int fecmxc_recv(struct udevice *dev, int flags, uchar **packetp) +#else static int fec_recv(struct eth_device *dev) +#endif { +#ifdef CONFIG_DM_ETH + struct fec_priv *fec = dev_get_priv(dev); +#else struct fec_priv *fec = (struct fec_priv *)dev->priv; +#endif struct fec_bd *rbd = &fec->rbd_base[fec->rbd_index]; unsigned long ievent; int frame_length, len = 0; @@ -801,8 +861,13 @@ static int fec_recv(struct eth_device *dev) writel(ievent, &fec->eth->ievent); debug("fec_recv: ievent 0x%lx\n", ievent); if (ievent & FEC_IEVENT_BABR) { +#ifdef CONFIG_DM_ETH + fecmxc_halt(dev); + fecmxc_init(dev); +#else fec_halt(dev); fec_init(dev, fec->bd); +#endif printf("some error: 0x%08lx\n", ievent); return 0; } @@ -814,10 +879,18 @@ static int fec_recv(struct eth_device *dev) if (ievent & FEC_IEVENT_GRA) { /* Graceful stop complete */ if (readl(&fec->eth->x_cntrl) & 0x00000001) { +#ifdef CONFIG_DM_ETH + fecmxc_halt(dev); +#else fec_halt(dev); +#endif writel(~0x00000001 & readl(&fec->eth->x_cntrl), &fec->eth->x_cntrl); +#ifdef CONFIG_DM_ETH + fecmxc_init(dev); +#else fec_init(dev, fec->bd); +#endif } }

@@ -971,6 +1044,33 @@ static void fec_free_descs(struct fec_priv *fec) free(fec->tbd_base); }

+struct mii_dev *fec_get_miibus(uint32_t base_addr, int dev_id) +{ + struct ethernet_regs *eth = (struct ethernet_regs *)base_addr; + struct mii_dev *bus; + int ret; + + bus = mdio_alloc(); + if (!bus) { + printf("mdio_alloc failed\n"); + return NULL; + } + bus->read = fec_phy_read; + bus->write = fec_phy_write; + bus->priv = eth; + fec_set_dev_name(bus->name, dev_id); + + ret = mdio_register(bus); + if (ret) { + printf("mdio_register failed\n"); + free(bus); + return NULL; + } + fec_mii_setspeed(eth); + return bus; +} + +#ifndef CONFIG_DM_ETH #ifdef CONFIG_PHYLIB int fec_probe(bd_t *bd, int dev_id, uint32_t base_addr, struct mii_dev *bus, struct phy_device *phydev) @@ -1062,32 +1162,6 @@ err1: return ret; }

-struct mii_dev *fec_get_miibus(uint32_t base_addr, int dev_id) -{ - struct ethernet_regs *eth = (struct ethernet_regs *)base_addr; - struct mii_dev *bus; - int ret; - - bus = mdio_alloc(); - if (!bus) { - printf("mdio_alloc failed\n"); - return NULL; - } - bus->read = fec_phy_read; - bus->write = fec_phy_write; - bus->priv = eth; - fec_set_dev_name(bus->name, dev_id); - - ret = mdio_register(bus); - if (ret) { - printf("mdio_register failed\n"); - free(bus); - return NULL; - } - fec_mii_setspeed(eth); - return bus; -} - int fecmxc_initialize_multi(bd_t *bd, int dev_id, int phy_id, uint32_t addr) { uint32_t base_mii; @@ -1147,3 +1221,150 @@ int fecmxc_register_mii_postcall(struct eth_device *dev, int (*cb)(int)) return 0; } #endif + +#else + +static const struct eth_ops fecmxc_ops = { + .start = fecmxc_init, + .send = fecmxc_send, + .recv = fecmxc_recv, + .stop = fecmxc_halt, + .write_hwaddr = fecmxc_set_hwaddr, +}; + +static int fec_phy_init(struct fec_priv *priv, struct udevice *dev) +{ + struct phy_device *phydev; + int mask = 0xffffffff; + +#ifdef CONFIG_PHYLIB + mask = 1 << CONFIG_FEC_MXC_PHYADDR; +#endif + + phydev = phy_find_by_mask(priv->bus, mask, priv->interface); + if (!phydev) + return -ENODEV; + + phy_connect_dev(phydev, dev); + + priv->phydev = phydev; + phy_config(phydev); + + return 0; +} + +static int fecmxc_probe(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + struct fec_priv *priv = dev_get_priv(dev); + struct mii_dev *bus = NULL; + int dev_id = -1; + unsigned char ethaddr[6]; + uint32_t start; + int ret; + + ret = fec_alloc_descs(priv); + if (ret) + return ret; + + bus = fec_get_miibus((uint32_t)priv->eth, dev_id); + if (!bus) + goto err_mii; + + priv->bus = bus; + priv->xcv_type = CONFIG_FEC_XCV_TYPE; + priv->interface = pdata->phy_interface; + ret = fec_phy_init(priv, dev); + if (ret) + goto err_phy; + + /* Reset chip. */ + writel(readl(&priv->eth->ecntrl) | FEC_ECNTRL_RESET, &priv->eth->ecntrl); + start = get_timer(0); + while (readl(&priv->eth->ecntrl) & FEC_ECNTRL_RESET) { + if (get_timer(start) > (CONFIG_SYS_HZ * 5)) { + printf("FEC MXC: Timeout reseting chip\n"); + goto err_timeout; + } + udelay(10); + } + + fec_reg_setup(priv); + fec_set_dev_name((char *)dev->name, dev_id); + priv->dev_id = (dev_id == -1) ? 0 : dev_id; + + ret = fec_get_hwaddr(dev, dev_id, ethaddr); + if (!ret) { + debug("got MAC%d address from fuse: %pM\n", dev_id, ethaddr); + memcpy(pdata->enetaddr, ethaddr, 6); + if (!getenv("ethaddr")) + eth_setenv_enetaddr("ethaddr", ethaddr); + } + + return 0; + +err_timeout: + free(priv->phydev); +err_phy: + mdio_unregister(bus); + free(bus); +err_mii: + fec_free_descs(priv); + return ret; +} + +static int fecmxc_remove(struct udevice *dev) +{ + struct fec_priv *priv = dev_get_priv(dev); + + free(priv->phydev); + fec_free_descs(priv); + mdio_unregister(priv->bus); + mdio_free(priv->bus); + + return 0; +} + +static int fecmxc_ofdata_to_platdata(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + struct fec_priv *priv = dev_get_priv(dev); + const char *phy_mode; + + pdata->iobase = (phys_addr_t)dev_get_addr(dev); + priv->eth = (struct ethernet_regs *)pdata->iobase; + + pdata->phy_interface = -1; + phy_mode = fdt_getprop(gd->fdt_blob, dev->of_offset, "phy-mode", NULL); + if (phy_mode) + pdata->phy_interface = phy_get_interface_by_name(phy_mode); + if (pdata->phy_interface == -1) { + debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode); + return -EINVAL; + } + + /* TODO + * Need to get the reset-gpio and related properties from DT + * and implemet the enet reset code on .probe call + */ + + return 0; +} + +static const struct udevice_id fecmxc_ids[] = { + { .compatible = "fsl,imx6q-fec" }, + { } +}; + +U_BOOT_DRIVER(fecmxc_gem) = { + .name = "fecmxc", + .id = UCLASS_ETH, + .of_match = fecmxc_ids, + .ofdata_to_platdata = fecmxc_ofdata_to_platdata, + .probe = fecmxc_probe, + .remove = fecmxc_remove, + .ops = &fecmxc_ops, + .priv_auto_alloc_size = sizeof(struct fec_priv), + .platdata_auto_alloc_size = sizeof(struct eth_pdata), +}; +#endif diff --git a/drivers/net/fec_mxc.h b/drivers/net/fec_mxc.h index 0717cc6..84f4149 100644 --- a/drivers/net/fec_mxc.h +++ b/drivers/net/fec_mxc.h @@ -18,6 +18,10 @@ #ifndef __FEC_MXC_H #define __FEC_MXC_H

+#ifdef CONFIG_DM_GPIO +#include <asm-generic/gpio.h> +#endif + void imx_get_mac_from_fuse(int dev_id, unsigned char *mac);

/** @@ -264,6 +268,13 @@ struct fec_priv { int phy_id; int (*mii_postcall)(int); #endif + +#ifdef CONFIG_DM_GPIO + struct gpio_desc reset_gpio; +#endif +#ifdef CONFIG_DM_ETH + u32 interface; +#endif };

/**