Moved i2c driver out of cpu/mpc86xx/i2c.c into drivers/fsl_i2c.c

in an effort to begin to unify the umpteen FSL I2C drivers that
are all otherwise very similar.

Signed-off-by: Jon Loeliger <jdl@freescale.com>

2 files changed, 1 insertions, 270 deletions

diff --git a/cpu/mpc86xx/Makefile b/cpu/mpc86xx/Makefile
index ad5b36d..de5561e 100644
--- a/cpu/mpc86xx/Makefile
+++ b/cpu/mpc86xx/Makefile
@@ -30,7 +30,7 @@ LIB	= $(obj)lib$(CPU).a
 START	= start.o #resetvec.o
 SOBJS	= cache.o
 COBJS	= traps.o cpu.o cpu_init.o speed.o interrupts.o \
-	  pci.o pcie_indirect.o i2c.o spd_sdram.o
+	  pci.o pcie_indirect.o spd_sdram.o
 
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
diff --git a/cpu/mpc86xx/i2c.c b/cpu/mpc86xx/i2c.c
deleted file mode 100644
index d99ecb9..0000000
--- a/cpu/mpc86xx/i2c.c
+++ /dev/null
@@ -1,269 +0,0 @@
-/*
- * (C) Copyright 2003,Motorola Inc.
- * Xianghua Xiao <x.xiao@motorola.com>
- * Adapted for Motorola 85xx chip.
- *
- * (C) Copyright 2003
- * Gleb Natapov <gnatapov@mrv.com>
- * Some bits are taken from linux driver writen by adrian@humboldt.co.uk
- *
- * Modified for MPC86xx by Jeff Brown
- *
- * Hardware I2C driver for MPC107 PCI bridge.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <command.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_HARD_I2C
-#include <i2c.h>
-
-#define TIMEOUT (CFG_HZ/4)
-
-#define I2C_Addr ((u8 *)(CFG_CCSRBAR + 0x3100))
-
-#define I2CADR  &I2C_Addr[0]
-#define I2CFDR  &I2C_Addr[4]
-#define I2CCCR  &I2C_Addr[8]
-#define I2CCSR  &I2C_Addr[12]
-#define I2CCDR  &I2C_Addr[16]
-#define I2CDFSRR &I2C_Addr[20]
-
-#define I2C_READ  1
-#define I2C_WRITE 0
-
-void
-i2c_init(int speed, int slaveadd)
-{
-	/* stop I2C controller */
-	writeb(0x0, I2CCCR);
-
-	/* set clock */
-	writeb(0x3f, I2CFDR);
-
-	/* set default filter */
-	writeb(0x10, I2CDFSRR);
-
-	/* write slave address */
-	writeb(slaveadd, I2CADR);
-
-	/* clear status register */
-	writeb(0x0, I2CCSR);
-
-	/* start I2C controller */
-	writeb(MPC86xx_I2CCR_MEN, I2CCCR);
-}
-
-static __inline__ int
-i2c_wait4bus(void)
-{
-	ulong timeval = get_timer(0);
-
-	while (readb(I2CCSR) & MPC86xx_I2CSR_MBB) {
-		if (get_timer(timeval) > TIMEOUT) {
-			return -1;
-		}
-	}
-
-	return 0;
-}
-
-static __inline__ int
-i2c_wait(int write)
-{
-	u32 csr;
-	ulong timeval = get_timer(0);
-
-	do {
-		csr = readb(I2CCSR);
-		if (!(csr & MPC86xx_I2CSR_MIF))
-			continue;
-
-		writeb(0x0, I2CCSR);
-
-		if (csr & MPC86xx_I2CSR_MAL) {
-			debug("i2c_wait: MAL\n");
-			return -1;
-		}
-
-		if (!(csr & MPC86xx_I2CSR_MCF)) {
-			debug("i2c_wait: unfinished\n");
-			return -1;
-		}
-
-		if (write == I2C_WRITE && (csr & MPC86xx_I2CSR_RXAK)) {
-			debug("i2c_wait: No RXACK\n");
-			return -1;
-		}
-
-		return 0;
-	} while (get_timer(timeval) < TIMEOUT);
-
-	debug("i2c_wait: timed out\n");
-	return -1;
-}
-
-static __inline__ int
-i2c_write_addr(u8 dev, u8 dir, int rsta)
-{
-	writeb(MPC86xx_I2CCR_MEN | MPC86xx_I2CCR_MSTA | MPC86xx_I2CCR_MTX
-	       | (rsta ? MPC86xx_I2CCR_RSTA : 0),
-	       I2CCCR);
-
-	writeb((dev << 1) | dir, I2CCDR);
-
-	if (i2c_wait(I2C_WRITE) < 0)
-		return 0;
-
-	return 1;
-}
-
-static __inline__ int
-__i2c_write(u8 *data, int length)
-{
-	int i;
-
-	writeb(MPC86xx_I2CCR_MEN | MPC86xx_I2CCR_MSTA | MPC86xx_I2CCR_MTX,
-	       I2CCCR);
-
-	for (i = 0; i < length; i++) {
-		writeb(data[i], I2CCDR);
-
-		if (i2c_wait(I2C_WRITE) < 0)
-			break;
-	}
-
-	return i;
-}
-
-static __inline__ int
-__i2c_read(u8 *data, int length)
-{
-	int i;
-
-	writeb(MPC86xx_I2CCR_MEN | MPC86xx_I2CCR_MSTA
-	       | ((length == 1) ? MPC86xx_I2CCR_TXAK : 0),
-	       I2CCCR);
-
-	/* dummy read */
-	readb(I2CCDR);
-
-	for (i = 0; i < length; i++) {
-		if (i2c_wait(I2C_READ) < 0)
-			break;
-
-		/* Generate ack on last next to last byte */
-		if (i == length - 2)
-			writeb(MPC86xx_I2CCR_MEN | MPC86xx_I2CCR_MSTA
-			       | MPC86xx_I2CCR_TXAK, I2CCCR);
-
-		/* Generate stop on last byte */
-		if (i == length - 1)
-			writeb(MPC86xx_I2CCR_MEN | MPC86xx_I2CCR_TXAK, I2CCCR);
-
-		data[i] = readb(I2CCDR);
-	}
-
-	return i;
-}
-
-int
-i2c_read(u8 dev, uint addr, int alen, u8 *data, int length)
-{
-	int i = 0;
-	u8 *a = (u8 *) &addr;
-
-	if (i2c_wait4bus() < 0)
-		goto exit;
-
-	if (i2c_write_addr(dev, I2C_WRITE, 0) == 0)
-		goto exit;
-
-	if (__i2c_write(&a[4 - alen], alen) != alen)
-		goto exit;
-
-	if (i2c_write_addr(dev, I2C_READ, 1) == 0)
-		goto exit;
-
-	i = __i2c_read(data, length);
-
-exit:
-	writeb(MPC86xx_I2CCR_MEN, I2CCCR);
-
-	return !(i == length);
-}
-
-int
-i2c_write(u8 dev, uint addr, int alen, u8 *data, int length)
-{
-	int i = 0;
-	u8 *a = (u8 *) &addr;
-
-	if (i2c_wait4bus() < 0)
-		goto exit;
-
-	if (i2c_write_addr(dev, I2C_WRITE, 0) == 0)
-		goto exit;
-
-	if (__i2c_write(&a[4 - alen], alen) != alen)
-		goto exit;
-
-	i = __i2c_write(data, length);
-
-exit:
-	writeb(MPC86xx_I2CCR_MEN, I2CCCR);
-
-	return !(i == length);
-}
-
-int
-i2c_probe(uchar chip)
-{
-	int tmp;
-
-	/*
-	 * Try to read the first location of the chip.  The underlying
-	 * driver doesn't appear to support sending just the chip address
-	 * and looking for an <ACK> back.
-	 */
-	udelay(10000);
-
-	return i2c_read(chip, 0, 1, (char *)&tmp, 1);
-}
-
-uchar
-i2c_reg_read(uchar i2c_addr, uchar reg)
-{
-	char buf[1];
-
-	i2c_read(i2c_addr, reg, 1, buf, 1);
-
-	return buf[0];
-}
-
-void
-i2c_reg_write(uchar i2c_addr, uchar reg, uchar val)
-{
-	i2c_write(i2c_addr, reg, 1, &val, 1);
-}
-
-#endif /* CONFIG_HARD_I2C */