i2c: powerpc: Remove use of CONFIG_HARD_I2C

Drop use of this long-deprecated option for powerpc.

Signed-off-by: Simon Glass <sjg@chromium.org>

2 files changed, 0 insertions, 673 deletions

diff --git a/arch/powerpc/cpu/mpc8xx/Makefile b/arch/powerpc/cpu/mpc8xx/Makefile
index 6f81fee571..fc91a054f0 100644
--- a/arch/powerpc/cpu/mpc8xx/Makefile
+++ b/arch/powerpc/cpu/mpc8xx/Makefile
@@ -14,7 +14,6 @@ obj-y	+= cpu.o
 obj-y	+= cpu_init.o
 obj-y	+= fec.o
 obj-$(CONFIG_OF_LIBFDT) += fdt.o
-obj-y	+= i2c.o
 obj-y	+= interrupts.o
 obj-y	+= scc.o
 obj-y	+= serial.o
diff --git a/arch/powerpc/cpu/mpc8xx/i2c.c b/arch/powerpc/cpu/mpc8xx/i2c.c
deleted file mode 100644
index 54d5cb5130..0000000000
--- a/arch/powerpc/cpu/mpc8xx/i2c.c
+++ /dev/null
@@ -1,672 +0,0 @@
-/*
- * (C) Copyright 2000
- * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
- *
- * (C) Copyright 2000 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- *
- * Back ported to the 8xx platform (from the 8260 platform) by
- * Murray.Jensen@cmst.csiro.au, 27-Jan-01.
- */
-
-#include <common.h>
-#include <console.h>
-
-#ifdef CONFIG_HARD_I2C
-
-#include <commproc.h>
-#include <i2c.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/* tx/rx timeout (we need the i2c early, so we don't use get_timer()) */
-#define TOUT_LOOP 1000000
-
-#define NUM_RX_BDS 4
-#define NUM_TX_BDS 4
-#define MAX_TX_SPACE 256
-#define I2C_RXTX_LEN 128	/* maximum tx/rx buffer length */
-
-typedef struct I2C_BD {
-	unsigned short status;
-	unsigned short length;
-	unsigned char *addr;
-} I2C_BD;
-
-#define BD_I2C_TX_START 0x0400	/* special status for i2c: Start condition */
-
-#define BD_I2C_TX_CL	0x0001	/* collision error */
-#define BD_I2C_TX_UN	0x0002	/* underflow error */
-#define BD_I2C_TX_NAK	0x0004	/* no acknowledge error */
-#define BD_I2C_TX_ERR	(BD_I2C_TX_NAK|BD_I2C_TX_UN|BD_I2C_TX_CL)
-
-#define BD_I2C_RX_ERR	BD_SC_OV
-
-typedef void (*i2c_ecb_t) (int, int);	/* error callback function */
-
-/* This structure keeps track of the bd and buffer space usage. */
-typedef struct i2c_state {
-	int rx_idx;		/* index   to next free Rx BD */
-	int tx_idx;		/* index   to next free Tx BD */
-	void *rxbd;		/* pointer to next free Rx BD */
-	void *txbd;		/* pointer to next free Tx BD */
-	int tx_space;		/* number  of Tx bytes left   */
-	unsigned char *tx_buf;	/* pointer to free Tx area    */
-	i2c_ecb_t err_cb;	/* error callback function    */
-} i2c_state_t;
-
-
-/* flags for i2c_send() and i2c_receive() */
-#define I2CF_ENABLE_SECONDARY	0x01  /* secondary_address is valid           */
-#define I2CF_START_COND		0x02  /* tx: generate start condition         */
-#define I2CF_STOP_COND		0x04  /* tx: generate stop  condition         */
-
-/* return codes */
-#define I2CERR_NO_BUFFERS	0x01  /* no more BDs or buffer space          */
-#define I2CERR_MSG_TOO_LONG	0x02  /* tried to send/receive to much data   */
-#define I2CERR_TIMEOUT		0x03  /* timeout in i2c_doio()                */
-#define I2CERR_QUEUE_EMPTY	0x04  /* i2c_doio called without send/receive */
-
-/* error callback flags */
-#define I2CECB_RX_ERR		0x10  /* this is a receive error              */
-#define     I2CECB_RX_ERR_OV	0x02  /* receive overrun error                */
-#define     I2CECB_RX_MASK	0x0f  /* mask for error bits                  */
-#define I2CECB_TX_ERR		0x20  /* this is a transmit error             */
-#define     I2CECB_TX_CL	0x01  /* transmit collision error             */
-#define     I2CECB_TX_UN	0x02  /* transmit underflow error             */
-#define     I2CECB_TX_NAK	0x04  /* transmit no ack error                */
-#define     I2CECB_TX_MASK	0x0f  /* mask for error bits                  */
-#define I2CECB_TIMEOUT		0x40  /* this is a timeout error              */
-
-/*
- * Returns the best value of I2BRG to meet desired clock speed of I2C with
- * input parameters (clock speed, filter, and predivider value).
- * It returns computer speed value and the difference between it and desired
- * speed.
- */
-static inline int
-i2c_roundrate(int hz, int speed, int filter, int modval,
-	      int *brgval, int *totspeed)
-{
-	int moddiv = 1 << (5 - (modval & 3)), brgdiv, div;
-
-	debug("\t[I2C] trying hz=%d, speed=%d, filter=%d, modval=%d\n",
-		hz, speed, filter, modval);
-
-	div = moddiv * speed;
-	brgdiv = (hz + div - 1) / div;
-
-	debug("\t\tmoddiv=%d, brgdiv=%d\n", moddiv, brgdiv);
-
-	*brgval = ((brgdiv + 1) / 2) - 3 - (2 * filter);
-
-	if ((*brgval < 0) || (*brgval > 255)) {
-		debug("\t\trejected brgval=%d\n", *brgval);
-		return -1;
-	}
-
-	brgdiv = 2 * (*brgval + 3 + (2 * filter));
-	div = moddiv * brgdiv;
-	*totspeed = hz / div;
-
-	debug("\t\taccepted brgval=%d, totspeed=%d\n", *brgval, *totspeed);
-
-	return 0;
-}
-
-/*
- * Sets the I2C clock predivider and divider to meet required clock speed.
- */
-static int i2c_setrate(int hz, int speed)
-{
-	immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
-	volatile i2c8xx_t *i2c = (i2c8xx_t *) & immap->im_i2c;
-	int	brgval,
-		modval,	/* 0-3 */
-		bestspeed_diff = speed,
-		bestspeed_brgval = 0,
-		bestspeed_modval = 0,
-		bestspeed_filter = 0,
-		totspeed,
-		filter = 0;	/* Use this fixed value */
-
-	for (modval = 0; modval < 4; modval++) {
-		if (i2c_roundrate
-		    (hz, speed, filter, modval, &brgval, &totspeed) == 0) {
-			int diff = speed - totspeed;
-
-			if ((diff >= 0) && (diff < bestspeed_diff)) {
-				bestspeed_diff = diff;
-				bestspeed_modval = modval;
-				bestspeed_brgval = brgval;
-				bestspeed_filter = filter;
-			}
-		}
-	}
-
-	debug("[I2C] Best is:\n");
-	debug("[I2C] CPU=%dhz RATE=%d F=%d I2MOD=%08x I2BRG=%08x DIFF=%dhz\n",
-		hz,
-		speed,
-		bestspeed_filter,
-		bestspeed_modval,
-		bestspeed_brgval,
-		bestspeed_diff);
-
-	i2c->i2c_i2mod |=
-		((bestspeed_modval & 3) << 1) | (bestspeed_filter << 3);
-	i2c->i2c_i2brg = bestspeed_brgval & 0xff;
-
-	debug("[I2C] i2mod=%08x i2brg=%08x\n",
-		i2c->i2c_i2mod,
-		i2c->i2c_i2brg);
-
-	return 1;
-}
-
-void i2c_init(int speed, int slaveaddr)
-{
-	volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
-	volatile cpm8xx_t *cp = (cpm8xx_t *)&immap->im_cpm;
-	volatile i2c8xx_t *i2c = (i2c8xx_t *)&immap->im_i2c;
-	volatile iic_t *iip = (iic_t *)&cp->cp_dparam[PROFF_IIC];
-	ulong rbase, tbase;
-	volatile I2C_BD *rxbd, *txbd;
-	uint dpaddr;
-
-#ifdef CONFIG_SYS_I2C_INIT_BOARD
-	/* call board specific i2c bus reset routine before accessing the   */
-	/* environment, which might be in a chip on that bus. For details   */
-	/* about this problem see doc/I2C_Edge_Conditions.                  */
-	i2c_init_board();
-#endif
-
-#ifdef CONFIG_SYS_I2C_UCODE_PATCH
-	iip = (iic_t *)&cp->cp_dpmem[iip->iic_rpbase];
-#else
-	/* Disable relocation */
-	iip->iic_rpbase = 0;
-#endif
-
-	dpaddr = CPM_I2C_BASE;
-
-	/*
-	 * initialise data in dual port ram:
-	 *
-	 * dpaddr->rbase -> rx BD         (NUM_RX_BDS * sizeof(I2C_BD) bytes)
-	 *         tbase -> tx BD         (NUM_TX_BDS * sizeof(I2C_BD) bytes)
-	 *                  tx buffer     (MAX_TX_SPACE bytes)
-	 */
-
-	rbase = dpaddr;
-	tbase = rbase + NUM_RX_BDS * sizeof(I2C_BD);
-
-	/* Initialize Port B I2C pins. */
-	cp->cp_pbpar |= 0x00000030;
-	cp->cp_pbdir |= 0x00000030;
-	cp->cp_pbodr |= 0x00000030;
-
-	/* Disable interrupts */
-	i2c->i2c_i2mod = 0x00;
-	i2c->i2c_i2cmr = 0x00;
-	i2c->i2c_i2cer = 0xff;
-	i2c->i2c_i2add = slaveaddr;
-
-	/*
-	 * Set the I2C BRG Clock division factor from desired i2c rate
-	 * and current CPU rate (we assume sccr dfbgr field is 0;
-	 * divide BRGCLK by 1)
-	 */
-	debug("[I2C] Setting rate...\n");
-	i2c_setrate(gd->cpu_clk, CONFIG_SYS_I2C_SPEED);
-
-	/* Set I2C controller in master mode */
-	i2c->i2c_i2com = 0x01;
-
-	/* Set SDMA bus arbitration level to 5 (SDCR) */
-	immap->im_siu_conf.sc_sdcr = 0x0001;
-
-	/* Initialize Tx/Rx parameters */
-	iip->iic_rbase = rbase;
-	iip->iic_tbase = tbase;
-	rxbd = (I2C_BD *) ((unsigned char *) &cp->cp_dpmem[iip->iic_rbase]);
-	txbd = (I2C_BD *) ((unsigned char *) &cp->cp_dpmem[iip->iic_tbase]);
-
-	debug("[I2C] rbase = %04x\n", iip->iic_rbase);
-	debug("[I2C] tbase = %04x\n", iip->iic_tbase);
-	debug("[I2C] rxbd = %08x\n", (int)rxbd);
-	debug("[I2C] txbd = %08x\n", (int)txbd);
-
-	/* Set big endian byte order */
-	iip->iic_tfcr = 0x10;
-	iip->iic_rfcr = 0x10;
-
-	/* Set maximum receive size. */
-	iip->iic_mrblr = I2C_RXTX_LEN;
-
-#ifdef CONFIG_SYS_I2C_UCODE_PATCH
-	/*
-	 *  Initialize required parameters if using microcode patch.
-	 */
-	iip->iic_rbptr = iip->iic_rbase;
-	iip->iic_tbptr = iip->iic_tbase;
-	iip->iic_rstate = 0;
-	iip->iic_tstate = 0;
-#else
-	cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_I2C, CPM_CR_INIT_TRX) | CPM_CR_FLG;
-	do {
-		__asm__ __volatile__("eieio");
-	} while (cp->cp_cpcr & CPM_CR_FLG);
-#endif
-
-	/* Clear events and interrupts */
-	i2c->i2c_i2cer = 0xff;
-	i2c->i2c_i2cmr = 0x00;
-}
-
-static void i2c_newio(i2c_state_t *state)
-{
-	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
-	volatile cpm8xx_t *cp = (cpm8xx_t *)&immap->im_cpm;
-	volatile iic_t *iip = (iic_t *)&cp->cp_dparam[PROFF_IIC];
-
-	debug("[I2C] i2c_newio\n");
-
-#ifdef CONFIG_SYS_I2C_UCODE_PATCH
-	iip = (iic_t *)&cp->cp_dpmem[iip->iic_rpbase];
-#endif
-	state->rx_idx = 0;
-	state->tx_idx = 0;
-	state->rxbd = (void *)&cp->cp_dpmem[iip->iic_rbase];
-	state->txbd = (void *)&cp->cp_dpmem[iip->iic_tbase];
-	state->tx_space = MAX_TX_SPACE;
-	state->tx_buf = (uchar *)state->txbd + NUM_TX_BDS * sizeof(I2C_BD);
-	state->err_cb = NULL;
-
-	debug("[I2C] rxbd = %08x\n", (int)state->rxbd);
-	debug("[I2C] txbd = %08x\n", (int)state->txbd);
-	debug("[I2C] tx_buf = %08x\n", (int)state->tx_buf);
-
-	/* clear the buffer memory */
-	memset((char *)state->tx_buf, 0, MAX_TX_SPACE);
-}
-
-static int
-i2c_send(i2c_state_t *state,
-	 unsigned char address,
-	 unsigned char secondary_address,
-	 unsigned int flags, unsigned short size, unsigned char *dataout)
-{
-	volatile I2C_BD *txbd;
-	int i, j;
-
-	debug("[I2C] i2c_send add=%02d sec=%02d flag=%02d size=%d\n",
-		address, secondary_address, flags, size);
-
-	/* trying to send message larger than BD */
-	if (size > I2C_RXTX_LEN)
-		return I2CERR_MSG_TOO_LONG;
-
-	/* no more free bds */
-	if (state->tx_idx >= NUM_TX_BDS || state->tx_space < (2 + size))
-		return I2CERR_NO_BUFFERS;
-
-	txbd = (I2C_BD *) state->txbd;
-	txbd->addr = state->tx_buf;
-
-	debug("[I2C] txbd = %08x\n", (int)txbd);
-
-	if (flags & I2CF_START_COND) {
-		debug("[I2C] Formatting addresses...\n");
-		if (flags & I2CF_ENABLE_SECONDARY) {
-			/* Length of msg + dest addr */
-			txbd->length = size + 2;
-
-			txbd->addr[0] = address << 1;
-			txbd->addr[1] = secondary_address;
-			i = 2;
-		} else {
-			/* Length of msg + dest addr */
-			txbd->length = size + 1;
-			/* Write dest addr to BD */
-			txbd->addr[0] = address << 1;
-			i = 1;
-		}
-	} else {
-		txbd->length = size;	/* Length of message */
-		i = 0;
-	}
-
-	/* set up txbd */
-	txbd->status = BD_SC_READY;
-	if (flags & I2CF_START_COND)
-		txbd->status |= BD_I2C_TX_START;
-	if (flags & I2CF_STOP_COND)
-		txbd->status |= BD_SC_LAST | BD_SC_WRAP;
-
-	/* Copy data to send into buffer */
-	debug("[I2C] copy data...\n");
-	for(j = 0; j < size; i++, j++)
-		txbd->addr[i] = dataout[j];
-
-	debug("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
-		txbd->length,
-		txbd->status,
-		txbd->addr[0],
-		txbd->addr[1]);
-
-	/* advance state */
-	state->tx_buf += txbd->length;
-	state->tx_space -= txbd->length;
-	state->tx_idx++;
-	state->txbd = (void *) (txbd + 1);
-
-	return 0;
-}
-
-static int
-i2c_receive(i2c_state_t *state,
-	    unsigned char address,
-	    unsigned char secondary_address,
-	    unsigned int flags,
-	    unsigned short size_to_expect, unsigned char *datain)
-{
-	volatile I2C_BD *rxbd, *txbd;
-
-	debug("[I2C] i2c_receive %02d %02d %02d\n",
-		address, secondary_address, flags);
-
-	/* Expected to receive too much */
-	if (size_to_expect > I2C_RXTX_LEN)
-		return I2CERR_MSG_TOO_LONG;
-
-	/* no more free bds */
-	if (state->tx_idx >= NUM_TX_BDS || state->rx_idx >= NUM_RX_BDS
-	    || state->tx_space < 2)
-		return I2CERR_NO_BUFFERS;
-
-	rxbd = (I2C_BD *) state->rxbd;
-	txbd = (I2C_BD *) state->txbd;
-
-	debug("[I2C] rxbd = %08x\n", (int)rxbd);
-	debug("[I2C] txbd = %08x\n", (int)txbd);
-
-	txbd->addr = state->tx_buf;
-
-	/* set up TXBD for destination address */
-	if (flags & I2CF_ENABLE_SECONDARY) {
-		txbd->length = 2;
-		txbd->addr[0] = address << 1;	/* Write data */
-		txbd->addr[1] = secondary_address;	/* Internal address */
-		txbd->status = BD_SC_READY;
-	} else {
-		txbd->length = 1 + size_to_expect;
-		txbd->addr[0] = (address << 1) | 0x01;
-		txbd->status = BD_SC_READY;
-		memset(&txbd->addr[1], 0, txbd->length);
-	}
-
-	/* set up rxbd for reception */
-	rxbd->status = BD_SC_EMPTY;
-	rxbd->length = size_to_expect;
-	rxbd->addr = datain;
-
-	txbd->status |= BD_I2C_TX_START;
-	if (flags & I2CF_STOP_COND) {
-		txbd->status |= BD_SC_LAST | BD_SC_WRAP;
-		rxbd->status |= BD_SC_WRAP;
-	}
-
-	debug("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
-		txbd->length,
-		txbd->status,
-		txbd->addr[0],
-		txbd->addr[1]);
-	debug("[I2C] rxbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
-		rxbd->length,
-		rxbd->status,
-		rxbd->addr[0],
-		rxbd->addr[1]);
-
-	/* advance state */
-	state->tx_buf += txbd->length;
-	state->tx_space -= txbd->length;
-	state->tx_idx++;
-	state->txbd = (void *) (txbd + 1);
-	state->rx_idx++;
-	state->rxbd = (void *) (rxbd + 1);
-
-	return 0;
-}
-
-
-static int i2c_doio(i2c_state_t *state)
-{
-	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
-	volatile cpm8xx_t *cp = (cpm8xx_t *)&immap->im_cpm;
-	volatile i2c8xx_t *i2c = (i2c8xx_t *)&immap->im_i2c;
-	volatile iic_t *iip = (iic_t *)&cp->cp_dparam[PROFF_IIC];
-	volatile I2C_BD *txbd, *rxbd;
-	volatile int j = 0;
-
-	debug("[I2C] i2c_doio\n");
-
-#ifdef CONFIG_SYS_I2C_UCODE_PATCH
-	iip = (iic_t *)&cp->cp_dpmem[iip->iic_rpbase];
-#endif
-
-	if (state->tx_idx <= 0 && state->rx_idx <= 0) {
-		debug("[I2C] No I/O is queued\n");
-		return I2CERR_QUEUE_EMPTY;
-	}
-
-	iip->iic_rbptr = iip->iic_rbase;
-	iip->iic_tbptr = iip->iic_tbase;
-
-	/* Enable I2C */
-	debug("[I2C] Enabling I2C...\n");
-	i2c->i2c_i2mod |= 0x01;
-
-	/* Begin transmission */
-	i2c->i2c_i2com |= 0x80;
-
-	/* Loop until transmit & receive completed */
-
-	if (state->tx_idx > 0) {
-		txbd = ((I2C_BD*)state->txbd) - 1;
-
-		debug("[I2C] Transmitting...(txbd=0x%08lx)\n",
-			(ulong)txbd);
-
-		while ((txbd->status & BD_SC_READY) && (j++ < TOUT_LOOP)) {
-			if (ctrlc())
-				return (-1);
-
-			__asm__ __volatile__("eieio");
-		}
-	}
-
-	if ((state->rx_idx > 0) && (j < TOUT_LOOP)) {
-		rxbd = ((I2C_BD*)state->rxbd) - 1;
-
-		debug("[I2C] Receiving...(rxbd=0x%08lx)\n",
-			(ulong)rxbd);
-
-		while ((rxbd->status & BD_SC_EMPTY) && (j++ < TOUT_LOOP)) {
-			if (ctrlc())
-				return (-1);
-
-			__asm__ __volatile__("eieio");
-		}
-	}
-
-	/* Turn off I2C */
-	i2c->i2c_i2mod &= ~0x01;
-
-	if (state->err_cb != NULL) {
-		int n, i, b;
-
-		/*
-		 * if we have an error callback function, look at the
-		 * error bits in the bd status and pass them back
-		 */
-
-		if ((n = state->tx_idx) > 0) {
-			for (i = 0; i < n; i++) {
-				txbd = ((I2C_BD *) state->txbd) - (n - i);
-				if ((b = txbd->status & BD_I2C_TX_ERR) != 0)
-					(*state->err_cb) (I2CECB_TX_ERR | b,
-							  i);
-			}
-		}
-
-		if ((n = state->rx_idx) > 0) {
-			for (i = 0; i < n; i++) {
-				rxbd = ((I2C_BD *) state->rxbd) - (n - i);
-				if ((b = rxbd->status & BD_I2C_RX_ERR) != 0)
-					(*state->err_cb) (I2CECB_RX_ERR | b,
-							  i);
-			}
-		}
-
-		if (j >= TOUT_LOOP)
-			(*state->err_cb) (I2CECB_TIMEOUT, 0);
-	}
-
-	return (j >= TOUT_LOOP) ? I2CERR_TIMEOUT : 0;
-}
-
-static int had_tx_nak;
-
-static void i2c_test_callback(int flags, int xnum)
-{
-	if ((flags & I2CECB_TX_ERR) && (flags & I2CECB_TX_NAK))
-		had_tx_nak = 1;
-}
-
-int i2c_probe(uchar chip)
-{
-	i2c_state_t state;
-	int rc;
-	uchar buf[1];
-
-	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-
-	i2c_newio(&state);
-
-	state.err_cb = i2c_test_callback;
-	had_tx_nak = 0;
-
-	rc = i2c_receive(&state, chip, 0, I2CF_START_COND | I2CF_STOP_COND, 1,
-			 buf);
-
-	if (rc != 0)
-		return (rc);
-
-	rc = i2c_doio(&state);
-
-	if ((rc != 0) && (rc != I2CERR_TIMEOUT))
-		return (rc);
-
-	return (had_tx_nak);
-}
-
-int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
-{
-	i2c_state_t state;
-	uchar xaddr[4];
-	int rc;
-
-	xaddr[0] = (addr >> 24) & 0xFF;
-	xaddr[1] = (addr >> 16) & 0xFF;
-	xaddr[2] = (addr >> 8) & 0xFF;
-	xaddr[3] = addr & 0xFF;
-
-#ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW
-	/*
-	 * EEPROM chips that implement "address overflow" are ones like
-	 * Catalyst 24WC04/08/16 which has 9/10/11 bits of address and the
-	 * extra bits end up in the "chip address" bit slots.  This makes
-	 * a 24WC08 (1Kbyte) chip look like four 256 byte chips.
-	 *
-	 * Note that we consider the length of the address field to still
-	 * be one byte because the extra address bits are hidden in the
-	 * chip address.
-	 */
-	chip |= ((addr >> (alen * 8)) & CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
-#endif
-
-	i2c_newio(&state);
-
-	rc = i2c_send(&state, chip, 0, I2CF_START_COND, alen,
-		      &xaddr[4 - alen]);
-	if (rc != 0) {
-		printf("i2c_read: i2c_send failed (%d)\n", rc);
-		return 1;
-	}
-
-	rc = i2c_receive(&state, chip, 0, I2CF_STOP_COND, len, buffer);
-	if (rc != 0) {
-		printf("i2c_read: i2c_receive failed (%d)\n", rc);
-		return 1;
-	}
-
-	rc = i2c_doio(&state);
-	if (rc != 0) {
-		printf("i2c_read: i2c_doio failed (%d)\n", rc);
-		return 1;
-	}
-	return 0;
-}
-
-int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
-{
-	i2c_state_t state;
-	uchar xaddr[4];
-	int rc;
-
-	xaddr[0] = (addr >> 24) & 0xFF;
-	xaddr[1] = (addr >> 16) & 0xFF;
-	xaddr[2] = (addr >> 8) & 0xFF;
-	xaddr[3] = addr & 0xFF;
-
-#ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW
-	/*
-	 * EEPROM chips that implement "address overflow" are ones like
-	 * Catalyst 24WC04/08/16 which has 9/10/11 bits of address and the
-	 * extra bits end up in the "chip address" bit slots.  This makes
-	 * a 24WC08 (1Kbyte) chip look like four 256 byte chips.
-	 *
-	 * Note that we consider the length of the address field to still
-	 * be one byte because the extra address bits are hidden in the
-	 * chip address.
-	 */
-	chip |= ((addr >> (alen * 8)) & CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
-#endif
-
-	i2c_newio(&state);
-
-	rc = i2c_send(&state, chip, 0, I2CF_START_COND, alen,
-		      &xaddr[4 - alen]);
-	if (rc != 0) {
-		printf("i2c_write: first i2c_send failed (%d)\n", rc);
-		return 1;
-	}
-
-	rc = i2c_send(&state, 0, 0, I2CF_STOP_COND, len, buffer);
-	if (rc != 0) {
-		printf("i2c_write: second i2c_send failed (%d)\n", rc);
-		return 1;
-	}
-
-	rc = i2c_doio(&state);
-	if (rc != 0) {
-		printf("i2c_write: i2c_doio failed (%d)\n", rc);
-		return 1;
-	}
-	return 0;
-}
-
-#endif /* CONFIG_HARD_I2C */