[PATCH] net: remove unused CONFIG_DRIVER_AT91EMAC_*

[Eugen Hristev <eugen.hristev@microchip.com>]

AT91EMAC driver is unused, thus removing.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
---
 README                       |  11 -
 drivers/net/Makefile         |   1 -
 drivers/net/at91_emac.c      | 519 -----------------------------------
 include/netdev.h             |   1 -
 scripts/config_whitelist.txt |   2 -
 5 files changed, 534 deletions(-)
 delete mode 100644 drivers/net/at91_emac.c

diff --git a/README b/README
index 1c1db98098..18e116c36f 100644
--- a/README
+++ b/README
@@ -879,17 +879,6 @@ The following options need to be configured:
 		Support for National dp8382[01] gigabit chips.
 
 - NETWORK Support (other):
-
-		CONFIG_DRIVER_AT91EMAC
-		Support for AT91RM9200 EMAC.
-
-			CONFIG_RMII
-			Define this to use reduced MII inteface
-
-			CONFIG_DRIVER_AT91EMAC_QUIET
-			If this defined, the driver is quiet.
-			The driver doen't show link status messages.
-
 		CONFIG_CALXEDA_XGMAC
 		Support for the Calxeda XGMAC device
 
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index b94ccea100..2685da7c13 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -9,7 +9,6 @@ obj-$(CONFIG_ARMADA100_FEC) += armada100_fec.o
 obj-$(CONFIG_BCM6348_ETH) += bcm6348-eth.o
 obj-$(CONFIG_BCM6368_ETH) += bcm6368-eth.o
 obj-$(CONFIG_BCMGENET) += bcmgenet.o
-obj-$(CONFIG_DRIVER_AT91EMAC) += at91_emac.o
 obj-$(CONFIG_DRIVER_AX88180) += ax88180.o
 obj-$(CONFIG_BCM_SF2_ETH) += bcm-sf2-eth.o
 obj-$(CONFIG_BCM_SF2_ETH_GMAC) += bcm-sf2-eth-gmac.o
diff --git a/drivers/net/at91_emac.c b/drivers/net/at91_emac.c
deleted file mode 100644
index e40b94ad89..0000000000
--- a/drivers/net/at91_emac.c
+++ /dev/null
@@ -1,519 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2009 BuS Elektronik GmbH & Co. KG
- * Jens Scharsig (esw@bus-elektronik.de)
- *
- * (C) Copyright 2003
- * Author : Hamid Ikdoumi (Atmel)
- */
-
-#include <common.h>
-#include <log.h>
-#include <asm/io.h>
-#include <asm/arch/hardware.h>
-#include <asm/arch/at91_emac.h>
-#include <asm/arch/clk.h>
-#include <asm/arch/at91_pio.h>
-#include <net.h>
-#include <netdev.h>
-#include <malloc.h>
-#include <miiphy.h>
-#include <linux/delay.h>
-#include <linux/mii.h>
-
-#undef MII_DEBUG
-#undef ET_DEBUG
-
-#if (CONFIG_SYS_RX_ETH_BUFFER > 1024)
-#error AT91 EMAC supports max 1024 RX buffers. \
-	Please decrease the CONFIG_SYS_RX_ETH_BUFFER value
-#endif
-
-#ifndef CONFIG_DRIVER_AT91EMAC_PHYADDR
-#define CONFIG_DRIVER_AT91EMAC_PHYADDR	0
-#endif
-
-/* MDIO clock must not exceed 2.5 MHz, so enable MCK divider */
-#if (AT91C_MASTER_CLOCK > 80000000)
-	#define HCLK_DIV	AT91_EMAC_CFG_MCLK_64
-#elif (AT91C_MASTER_CLOCK > 40000000)
-	#define HCLK_DIV	AT91_EMAC_CFG_MCLK_32
-#elif (AT91C_MASTER_CLOCK > 20000000)
-	#define HCLK_DIV	AT91_EMAC_CFG_MCLK_16
-#else
-	#define HCLK_DIV	AT91_EMAC_CFG_MCLK_8
-#endif
-
-#ifdef ET_DEBUG
-#define DEBUG_AT91EMAC	1
-#else
-#define DEBUG_AT91EMAC	0
-#endif
-
-#ifdef MII_DEBUG
-#define DEBUG_AT91PHY	1
-#else
-#define DEBUG_AT91PHY	0
-#endif
-
-#ifndef CONFIG_DRIVER_AT91EMAC_QUIET
-#define VERBOSEP	1
-#else
-#define VERBOSEP	0
-#endif
-
-#define RBF_ADDR      0xfffffffc
-#define RBF_OWNER     (1<<0)
-#define RBF_WRAP      (1<<1)
-#define RBF_BROADCAST (1<<31)
-#define RBF_MULTICAST (1<<30)
-#define RBF_UNICAST   (1<<29)
-#define RBF_EXTERNAL  (1<<28)
-#define RBF_UNKNOWN   (1<<27)
-#define RBF_SIZE      0x07ff
-#define RBF_LOCAL4    (1<<26)
-#define RBF_LOCAL3    (1<<25)
-#define RBF_LOCAL2    (1<<24)
-#define RBF_LOCAL1    (1<<23)
-
-#define RBF_FRAMEMAX CONFIG_SYS_RX_ETH_BUFFER
-#define RBF_FRAMELEN 0x600
-
-typedef struct {
-	unsigned long addr, size;
-} rbf_t;
-
-typedef struct {
-	rbf_t 		rbfdt[RBF_FRAMEMAX];
-	unsigned long	rbindex;
-} emac_device;
-
-void at91emac_EnableMDIO(at91_emac_t *at91mac)
-{
-	/* Mac CTRL reg set for MDIO enable */
-	writel(readl(&at91mac->ctl) | AT91_EMAC_CTL_MPE, &at91mac->ctl);
-}
-
-void at91emac_DisableMDIO(at91_emac_t *at91mac)
-{
-	/* Mac CTRL reg set for MDIO disable */
-	writel(readl(&at91mac->ctl) & ~AT91_EMAC_CTL_MPE, &at91mac->ctl);
-}
-
-int  at91emac_read(at91_emac_t *at91mac, unsigned char addr,
-		unsigned char reg, unsigned short *value)
-{
-	unsigned long netstat;
-	at91emac_EnableMDIO(at91mac);
-
-	writel(AT91_EMAC_MAN_HIGH | AT91_EMAC_MAN_RW_R |
-		AT91_EMAC_MAN_REGA(reg) | AT91_EMAC_MAN_CODE_802_3 |
-		AT91_EMAC_MAN_PHYA(addr),
-		&at91mac->man);
-
-	do {
-		netstat = readl(&at91mac->sr);
-		debug_cond(DEBUG_AT91PHY, "poll SR %08lx\n", netstat);
-	} while (!(netstat & AT91_EMAC_SR_IDLE));
-
-	*value = readl(&at91mac->man) & AT91_EMAC_MAN_DATA_MASK;
-
-	at91emac_DisableMDIO(at91mac);
-
-	debug_cond(DEBUG_AT91PHY,
-		"AT91PHY read %p REG(%d)=%x\n", at91mac, reg, *value);
-
-	return 0;
-}
-
-int  at91emac_write(at91_emac_t *at91mac, unsigned char addr,
-		unsigned char reg, unsigned short value)
-{
-	unsigned long netstat;
-	debug_cond(DEBUG_AT91PHY,
-		"AT91PHY write %p REG(%d)=%p\n", at91mac, reg, &value);
-
-	at91emac_EnableMDIO(at91mac);
-
-	writel(AT91_EMAC_MAN_HIGH | AT91_EMAC_MAN_RW_W |
-		AT91_EMAC_MAN_REGA(reg) | AT91_EMAC_MAN_CODE_802_3 |
-		AT91_EMAC_MAN_PHYA(addr) | (value & AT91_EMAC_MAN_DATA_MASK),
-		&at91mac->man);
-
-	do {
-		netstat = readl(&at91mac->sr);
-		debug_cond(DEBUG_AT91PHY, "poll SR %08lx\n", netstat);
-	} while (!(netstat & AT91_EMAC_SR_IDLE));
-
-	at91emac_DisableMDIO(at91mac);
-
-	return 0;
-}
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-
-at91_emac_t *get_emacbase_by_name(const char *devname)
-{
-	struct eth_device *netdev;
-
-	netdev = eth_get_dev_by_name(devname);
-	return (at91_emac_t *) netdev->iobase;
-}
-
-int at91emac_mii_read(struct mii_dev *bus, int addr, int devad, int reg)
-{
-	unsigned short value = 0;
-	at91_emac_t *emac;
-
-	emac = get_emacbase_by_name(bus->name);
-	at91emac_read(emac , addr, reg, &value);
-	return value;
-}
-
-
-int at91emac_mii_write(struct mii_dev *bus, int addr, int devad, int reg,
-		       u16 value)
-{
-	at91_emac_t *emac;
-
-	emac = get_emacbase_by_name(bus->name);
-	at91emac_write(emac, addr, reg, value);
-	return 0;
-}
-
-#endif
-
-static int at91emac_phy_reset(struct eth_device *netdev)
-{
-	int i;
-	u16 status, adv;
-	at91_emac_t *emac;
-
-	emac = (at91_emac_t *) netdev->iobase;
-
-	adv = ADVERTISE_CSMA | ADVERTISE_ALL;
-	at91emac_write(emac, CONFIG_DRIVER_AT91EMAC_PHYADDR,
-		MII_ADVERTISE, adv);
-	debug_cond(VERBOSEP, "%s: Starting autonegotiation...\n", netdev->name);
-	at91emac_write(emac, CONFIG_DRIVER_AT91EMAC_PHYADDR, MII_BMCR,
-		(BMCR_ANENABLE | BMCR_ANRESTART));
-
-	for (i = 0; i < 30000; i++) {
-		at91emac_read(emac, CONFIG_DRIVER_AT91EMAC_PHYADDR,
-			MII_BMSR, &status);
-		if (status & BMSR_ANEGCOMPLETE)
-			break;
-		udelay(100);
-	}
-
-	if (status & BMSR_ANEGCOMPLETE) {
-		debug_cond(VERBOSEP,
-			"%s: Autonegotiation complete\n", netdev->name);
-	} else {
-		printf("%s: Autonegotiation timed out (status=0x%04x)\n",
-		       netdev->name, status);
-		return -1;
-	}
-	return 0;
-}
-
-static int at91emac_phy_init(struct eth_device *netdev)
-{
-	u16 phy_id, status, adv, lpa;
-	int media, speed, duplex;
-	int i;
-	at91_emac_t *emac;
-
-	emac = (at91_emac_t *) netdev->iobase;
-
-	/* Check if the PHY is up to snuff... */
-	at91emac_read(emac, CONFIG_DRIVER_AT91EMAC_PHYADDR,
-		MII_PHYSID1, &phy_id);
-	if (phy_id == 0xffff) {
-		printf("%s: No PHY present\n", netdev->name);
-		return -1;
-	}
-
-	at91emac_read(emac, CONFIG_DRIVER_AT91EMAC_PHYADDR,
-		MII_BMSR, &status);
-
-	if (!(status & BMSR_LSTATUS)) {
-		/* Try to re-negotiate if we don't have link already. */
-		if (at91emac_phy_reset(netdev))
-			return -2;
-
-		for (i = 0; i < 100000 / 100; i++) {
-			at91emac_read(emac, CONFIG_DRIVER_AT91EMAC_PHYADDR,
-				MII_BMSR, &status);
-			if (status & BMSR_LSTATUS)
-				break;
-			udelay(100);
-		}
-	}
-	if (!(status & BMSR_LSTATUS)) {
-		debug_cond(VERBOSEP, "%s: link down\n", netdev->name);
-		return -3;
-	} else {
-		at91emac_read(emac, CONFIG_DRIVER_AT91EMAC_PHYADDR,
-			MII_ADVERTISE, &adv);
-		at91emac_read(emac, CONFIG_DRIVER_AT91EMAC_PHYADDR,
-			MII_LPA, &lpa);
-		media = mii_nway_result(lpa & adv);
-		speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF)
-			 ? 1 : 0);
-		duplex = (media & ADVERTISE_FULL) ? 1 : 0;
-		debug_cond(VERBOSEP, "%s: link up, %sMbps %s-duplex\n",
-		       netdev->name,
-		       speed ? "100" : "10",
-		       duplex ? "full" : "half");
-	}
-	return 0;
-}
-
-int at91emac_UpdateLinkSpeed(at91_emac_t *emac)
-{
-	unsigned short stat1;
-
-	at91emac_read(emac, CONFIG_DRIVER_AT91EMAC_PHYADDR, MII_BMSR, &stat1);
-
-	if (!(stat1 & BMSR_LSTATUS))	/* link status up? */
-		return -1;
-
-	if (stat1 & BMSR_100FULL) {
-		/*set Emac for 100BaseTX and Full Duplex  */
-		writel(readl(&emac->cfg) |
-			AT91_EMAC_CFG_SPD | AT91_EMAC_CFG_FD,
-			&emac->cfg);
-		return 0;
-	}
-
-	if (stat1 & BMSR_10FULL) {
-		/*set MII for 10BaseT and Full Duplex  */
-		writel((readl(&emac->cfg) &
-			~(AT91_EMAC_CFG_SPD | AT91_EMAC_CFG_FD)
-			) | AT91_EMAC_CFG_FD,
-			&emac->cfg);
-		return 0;
-	}
-
-	if (stat1 & BMSR_100HALF) {
-		/*set MII for 100BaseTX and Half Duplex  */
-		writel((readl(&emac->cfg) &
-			~(AT91_EMAC_CFG_SPD | AT91_EMAC_CFG_FD)
-			) | AT91_EMAC_CFG_SPD,
-			&emac->cfg);
-		return 0;
-	}
-
-	if (stat1 & BMSR_10HALF) {
-		/*set MII for 10BaseT and Half Duplex  */
-		writel((readl(&emac->cfg) &
-			~(AT91_EMAC_CFG_SPD | AT91_EMAC_CFG_FD)),
-			&emac->cfg);
-		return 0;
-	}
-	return 0;
-}
-
-static int at91emac_init(struct eth_device *netdev, struct bd_info *bd)
-{
-	int i;
-	u32 value;
-	emac_device *dev;
-	at91_emac_t *emac;
-	at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIO;
-
-	emac = (at91_emac_t *) netdev->iobase;
-	dev = (emac_device *) netdev->priv;
-
-	/* PIO Disable Register */
-	value =	ATMEL_PMX_AA_EMDIO |	ATMEL_PMX_AA_EMDC |
-		ATMEL_PMX_AA_ERXER |	ATMEL_PMX_AA_ERX1 |
-		ATMEL_PMX_AA_ERX0 |	ATMEL_PMX_AA_ECRS |
-		ATMEL_PMX_AA_ETX1 |	ATMEL_PMX_AA_ETX0 |
-		ATMEL_PMX_AA_ETXEN |	ATMEL_PMX_AA_EREFCK;
-
-	writel(value, &pio->pioa.pdr);
-	writel(value, &pio->pioa.mux.pio2.asr);
-
-#ifdef CONFIG_RMII
-	value = ATMEL_PMX_BA_ERXCK;
-#else
-	value = ATMEL_PMX_BA_ERXCK |	ATMEL_PMX_BA_ECOL |
-		ATMEL_PMX_BA_ERXDV |	ATMEL_PMX_BA_ERX3 |
-		ATMEL_PMX_BA_ERX2 |	ATMEL_PMX_BA_ETXER |
-		ATMEL_PMX_BA_ETX3 |	ATMEL_PMX_BA_ETX2;
-#endif
-	writel(value, &pio->piob.pdr);
-	writel(value, &pio->piob.mux.pio2.bsr);
-
-	at91_periph_clk_enable(ATMEL_ID_EMAC);
-
-	writel(readl(&emac->ctl) | AT91_EMAC_CTL_CSR, &emac->ctl);
-
-	/* Init Ethernet buffers */
-	for (i = 0; i < RBF_FRAMEMAX; i++) {
-		dev->rbfdt[i].addr = (unsigned long) net_rx_packets[i];
-		dev->rbfdt[i].size = 0;
-	}
-	dev->rbfdt[RBF_FRAMEMAX - 1].addr |= RBF_WRAP;
-	dev->rbindex = 0;
-	writel((u32) &(dev->rbfdt[0]), &emac->rbqp);
-
-	writel(readl(&emac->rsr) &
-		~(AT91_EMAC_RSR_OVR | AT91_EMAC_RSR_REC | AT91_EMAC_RSR_BNA),
-		&emac->rsr);
-
-	value = AT91_EMAC_CFG_CAF |	AT91_EMAC_CFG_NBC |
-		HCLK_DIV;
-#ifdef CONFIG_RMII
-	value |= AT91_EMAC_CFG_RMII;
-#endif
-	writel(value, &emac->cfg);
-
-	writel(readl(&emac->ctl) | AT91_EMAC_CTL_TE | AT91_EMAC_CTL_RE,
-		&emac->ctl);
-
-	if (!at91emac_phy_init(netdev)) {
-		at91emac_UpdateLinkSpeed(emac);
-		return 0;
-	}
-	return -1;
-}
-
-static void at91emac_halt(struct eth_device *netdev)
-{
-	at91_emac_t *emac;
-
-	emac = (at91_emac_t *) netdev->iobase;
-	writel(readl(&emac->ctl) & ~(AT91_EMAC_CTL_TE | AT91_EMAC_CTL_RE),
-		&emac->ctl);
-	debug_cond(DEBUG_AT91EMAC, "halt MAC\n");
-}
-
-static int at91emac_send(struct eth_device *netdev, void *packet, int length)
-{
-	at91_emac_t *emac;
-
-	emac = (at91_emac_t *) netdev->iobase;
-
-	while (!(readl(&emac->tsr) & AT91_EMAC_TSR_BNQ))
-		;
-	writel((u32) packet, &emac->tar);
-	writel(AT91_EMAC_TCR_LEN(length), &emac->tcr);
-	while (AT91_EMAC_TCR_LEN(readl(&emac->tcr)))
-		;
-	debug_cond(DEBUG_AT91EMAC, "Send %d\n", length);
-	writel(readl(&emac->tsr) | AT91_EMAC_TSR_COMP, &emac->tsr);
-	return 0;
-}
-
-static int at91emac_recv(struct eth_device *netdev)
-{
-	emac_device *dev;
-	at91_emac_t *emac;
-	rbf_t *rbfp;
-	int size;
-
-	emac = (at91_emac_t *) netdev->iobase;
-	dev = (emac_device *) netdev->priv;
-
-	rbfp = &dev->rbfdt[dev->rbindex];
-	while (rbfp->addr & RBF_OWNER)	{
-		size = rbfp->size & RBF_SIZE;
-		net_process_received_packet(net_rx_packets[dev->rbindex], size);
-
-		debug_cond(DEBUG_AT91EMAC, "Recv[%ld]: %d bytes @ %lx\n",
-			dev->rbindex, size, rbfp->addr);
-
-		rbfp->addr &= ~RBF_OWNER;
-		rbfp->size = 0;
-		if (dev->rbindex < (RBF_FRAMEMAX-1))
-			dev->rbindex++;
-		else
-			dev->rbindex = 0;
-
-		rbfp = &(dev->rbfdt[dev->rbindex]);
-		if (!(rbfp->addr & RBF_OWNER))
-			writel(readl(&emac->rsr) | AT91_EMAC_RSR_REC,
-				&emac->rsr);
-	}
-
-	if (readl(&emac->isr) & AT91_EMAC_IxR_RBNA) {
-		/* EMAC silicon bug 41.3.1 workaround 1 */
-		writel(readl(&emac->ctl) & ~AT91_EMAC_CTL_RE, &emac->ctl);
-		writel(readl(&emac->ctl) | AT91_EMAC_CTL_RE, &emac->ctl);
-		dev->rbindex = 0;
-		printf("%s: reset receiver (EMAC dead lock bug)\n",
-			netdev->name);
-	}
-	return 0;
-}
-
-static int at91emac_write_hwaddr(struct eth_device *netdev)
-{
-	at91_emac_t *emac;
-	emac = (at91_emac_t *) netdev->iobase;
-
-	at91_periph_clk_enable(ATMEL_ID_EMAC);
-
-	debug_cond(DEBUG_AT91EMAC,
-		"init MAC-ADDR %02x:%02x:%02x:%02x:%02x:%02x\n",
-		netdev->enetaddr[5], netdev->enetaddr[4], netdev->enetaddr[3],
-		netdev->enetaddr[2], netdev->enetaddr[1], netdev->enetaddr[0]);
-	writel( (netdev->enetaddr[0] | netdev->enetaddr[1] << 8 |
-			netdev->enetaddr[2] << 16 | netdev->enetaddr[3] << 24),
-			&emac->sa2l);
-	writel((netdev->enetaddr[4] | netdev->enetaddr[5] << 8), &emac->sa2h);
-	debug_cond(DEBUG_AT91EMAC, "init MAC-ADDR %x%x\n",
-		readl(&emac->sa2h), readl(&emac->sa2l));
-	return 0;
-}
-
-int at91emac_register(struct bd_info *bis, unsigned long iobase)
-{
-	emac_device *emac;
-	emac_device *emacfix;
-	struct eth_device *dev;
-
-	if (iobase == 0)
-		iobase = ATMEL_BASE_EMAC;
-	emac = malloc(sizeof(*emac)+512);
-	if (emac == NULL)
-		return -1;
-	dev = malloc(sizeof(*dev));
-	if (dev == NULL) {
-		free(emac);
-		return -1;
-	}
-	/* alignment as per Errata (64 bytes) is insufficient! */
-	emacfix = (emac_device *) (((unsigned long) emac + 0x1ff) & 0xFFFFFE00);
-	memset(emacfix, 0, sizeof(emac_device));
-
-	memset(dev, 0, sizeof(*dev));
-	strcpy(dev->name, "emac");
-	dev->iobase = iobase;
-	dev->priv = emacfix;
-	dev->init = at91emac_init;
-	dev->halt = at91emac_halt;
-	dev->send = at91emac_send;
-	dev->recv = at91emac_recv;
-	dev->write_hwaddr = at91emac_write_hwaddr;
-
-	eth_register(dev);
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-	int retval;
-	struct mii_dev *mdiodev = mdio_alloc();
-	if (!mdiodev)
-		return -ENOMEM;
-	strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
-	mdiodev->read = at91emac_mii_read;
-	mdiodev->write = at91emac_mii_write;
-
-	retval = mdio_register(mdiodev);
-	if (retval < 0)
-		return retval;
-#endif
-	return 1;
-}
diff --git a/include/netdev.h b/include/netdev.h
index 00a0993a83..fb18f09893 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -29,7 +29,6 @@ int board_interface_eth_init(struct udevice *dev,
 int cpu_eth_init(struct bd_info *bis);
 
 /* Driver initialization prototypes */
-int at91emac_register(struct bd_info *bis, unsigned long iobase);
 int ax88180_initialize(struct bd_info *bis);
 int bcm_sf2_eth_register(struct bd_info *bis, u8 dev_num);
 int bfin_EMAC_initialize(struct bd_info *bis);
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index a1a12813a6..608bda21e6 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -278,8 +278,6 @@ CONFIG_DP_DDR_CTRL
 CONFIG_DP_DDR_DIMM_SLOTS_PER_CTLR
 CONFIG_DP_DDR_NUM_CTRLS
 CONFIG_DRAM_TIMINGS_
-CONFIG_DRIVER_AT91EMAC_PHYADDR
-CONFIG_DRIVER_AT91EMAC_QUIET
 CONFIG_DRIVER_DM9000
 CONFIG_DSP_CLUSTER_START
 CONFIG_DWC2_DFLT_SPEED_FULL
-- 
2.25.1