drivers/i2c : move i2c drivers to drivers/i2c

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 0 insertions, 295 deletions

diff --git a/drivers/fsl_i2c.c b/drivers/fsl_i2c.c
deleted file mode 100644
index 22485ea..0000000
--- a/drivers/fsl_i2c.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- * Copyright 2006 Freescale Semiconductor, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * Version 2 as published by the Free Software Foundation.
- *
- * 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>
-
-#ifdef CONFIG_FSL_I2C
-#ifdef CONFIG_HARD_I2C
-
-#include <command.h>
-#include <i2c.h>		/* Functional interface */
-
-#include <asm/io.h>
-#include <asm/fsl_i2c.h>	/* HW definitions */
-
-#define I2C_TIMEOUT	(CFG_HZ / 4)
-
-#define I2C_READ_BIT  1
-#define I2C_WRITE_BIT 0
-
-/* Initialize the bus pointer to whatever one the SPD EEPROM is on.
- * Default is bus 0.  This is necessary because the DDR initialization
- * runs from ROM, and we can't switch buses because we can't modify
- * the global variables.
- */
-#ifdef CFG_SPD_BUS_NUM
-static unsigned int i2c_bus_num __attribute__ ((section ("data"))) = CFG_SPD_BUS_NUM;
-#else
-static unsigned int i2c_bus_num __attribute__ ((section ("data"))) = 0;
-#endif
-
-static volatile struct fsl_i2c *i2c_dev[2] = {
-	(struct fsl_i2c *) (CFG_IMMR + CFG_I2C_OFFSET),
-#ifdef CFG_I2C2_OFFSET
-	(struct fsl_i2c *) (CFG_IMMR + CFG_I2C2_OFFSET)
-#endif
-};
-
-void
-i2c_init(int speed, int slaveadd)
-{
-	volatile struct fsl_i2c *dev;
-
-	dev = (struct fsl_i2c *) (CFG_IMMR + CFG_I2C_OFFSET);
-
-	writeb(0, &dev->cr);			/* stop I2C controller */
-	udelay(5);				/* let it shutdown in peace */
-	writeb(0x3F, &dev->fdr);		/* set bus speed */
-	writeb(0x3F, &dev->dfsrr);		/* set default filter */
-	writeb(slaveadd << 1, &dev->adr);	/* write slave address */
-	writeb(0x0, &dev->sr);			/* clear status register */
-	writeb(I2C_CR_MEN, &dev->cr);		/* start I2C controller */
-
-#ifdef	CFG_I2C2_OFFSET
-	dev = (struct fsl_i2c *) (CFG_IMMR + CFG_I2C2_OFFSET);
-
-	writeb(0, &dev->cr);			/* stop I2C controller */
-	udelay(5);				/* let it shutdown in peace */
-	writeb(0x3F, &dev->fdr);		/* set bus speed */
-	writeb(0x3F, &dev->dfsrr);		/* set default filter */
-	writeb(slaveadd << 1, &dev->adr);	/* write slave address */
-	writeb(0x0, &dev->sr);			/* clear status register */
-	writeb(I2C_CR_MEN, &dev->cr);		/* start I2C controller */
-#endif	/* CFG_I2C2_OFFSET */
-}
-
-static __inline__ int
-i2c_wait4bus(void)
-{
-	ulong timeval = get_timer(0);
-
-	while (readb(&i2c_dev[i2c_bus_num]->sr) & I2C_SR_MBB) {
-		if (get_timer(timeval) > I2C_TIMEOUT) {
-			return -1;
-		}
-	}
-
-	return 0;
-}
-
-static __inline__ int
-i2c_wait(int write)
-{
-	u32 csr;
-	ulong timeval = get_timer(0);
-
-	do {
-		csr = readb(&i2c_dev[i2c_bus_num]->sr);
-		if (!(csr & I2C_SR_MIF))
-			continue;
-
-		writeb(0x0, &i2c_dev[i2c_bus_num]->sr);
-
-		if (csr & I2C_SR_MAL) {
-			debug("i2c_wait: MAL\n");
-			return -1;
-		}
-
-		if (!(csr & I2C_SR_MCF))	{
-			debug("i2c_wait: unfinished\n");
-			return -1;
-		}
-
-		if (write == I2C_WRITE_BIT && (csr & I2C_SR_RXAK)) {
-			debug("i2c_wait: No RXACK\n");
-			return -1;
-		}
-
-		return 0;
-	} while (get_timer (timeval) < I2C_TIMEOUT);
-
-	debug("i2c_wait: timed out\n");
-	return -1;
-}
-
-static __inline__ int
-i2c_write_addr (u8 dev, u8 dir, int rsta)
-{
-	writeb(I2C_CR_MEN | I2C_CR_MSTA | I2C_CR_MTX
-	       | (rsta ? I2C_CR_RSTA : 0),
-	       &i2c_dev[i2c_bus_num]->cr);
-
-	writeb((dev << 1) | dir, &i2c_dev[i2c_bus_num]->dr);
-
-	if (i2c_wait(I2C_WRITE_BIT) < 0)
-		return 0;
-
-	return 1;
-}
-
-static __inline__ int
-__i2c_write(u8 *data, int length)
-{
-	int i;
-
-	writeb(I2C_CR_MEN | I2C_CR_MSTA | I2C_CR_MTX,
-	       &i2c_dev[i2c_bus_num]->cr);
-
-	for (i = 0; i < length; i++) {
-		writeb(data[i], &i2c_dev[i2c_bus_num]->dr);
-
-		if (i2c_wait(I2C_WRITE_BIT) < 0)
-			break;
-	}
-
-	return i;
-}
-
-static __inline__ int
-__i2c_read(u8 *data, int length)
-{
-	int i;
-
-	writeb(I2C_CR_MEN | I2C_CR_MSTA | ((length == 1) ? I2C_CR_TXAK : 0),
-	       &i2c_dev[i2c_bus_num]->cr);
-
-	/* dummy read */
-	readb(&i2c_dev[i2c_bus_num]->dr);
-
-	for (i = 0; i < length; i++) {
-		if (i2c_wait(I2C_READ_BIT) < 0)
-			break;
-
-		/* Generate ack on last next to last byte */
-		if (i == length - 2)
-			writeb(I2C_CR_MEN | I2C_CR_MSTA | I2C_CR_TXAK,
-			       &i2c_dev[i2c_bus_num]->cr);
-
-		/* Generate stop on last byte */
-		if (i == length - 1)
-			writeb(I2C_CR_MEN | I2C_CR_TXAK, &i2c_dev[i2c_bus_num]->cr);
-
-		data[i] = readb(&i2c_dev[i2c_bus_num]->dr);
-	}
-
-	return i;
-}
-
-int
-i2c_read(u8 dev, uint addr, int alen, u8 *data, int length)
-{
-	int i = -1; /* signal error */
-	u8 *a = (u8*)&addr;
-
-	if (i2c_wait4bus() >= 0
-	    && i2c_write_addr(dev, I2C_WRITE_BIT, 0) != 0
-	    && __i2c_write(&a[4 - alen], alen) == alen)
-		i = 0; /* No error so far */
-
-	if (length
-	    && i2c_write_addr(dev, I2C_READ_BIT, 1) != 0)
-		i = __i2c_read(data, length);
-
-	writeb(I2C_CR_MEN, &i2c_dev[i2c_bus_num]->cr);
-
-	if (i == length)
-	    return 0;
-
-	return -1;
-}
-
-int
-i2c_write(u8 dev, uint addr, int alen, u8 *data, int length)
-{
-	int i = -1; /* signal error */
-	u8 *a = (u8*)&addr;
-
-	if (i2c_wait4bus() >= 0
-	    && i2c_write_addr(dev, I2C_WRITE_BIT, 0) != 0
-	    && __i2c_write(&a[4 - alen], alen) == alen) {
-		i = __i2c_write(data, length);
-	}
-
-	writeb(I2C_CR_MEN, &i2c_dev[i2c_bus_num]->cr);
-
-	if (i == length)
-	    return 0;
-
-	return -1;
-}
-
-int
-i2c_probe(uchar chip)
-{
-	/* For unknow reason the controller will ACK when
-	 * probing for a slave with the same address, so skip
-	 * it.
-	 */
-	if (chip == (readb(&i2c_dev[i2c_bus_num]->adr) >> 1))
-		return -1;
-
-	return i2c_read(chip, 0, 0, NULL, 0);
-}
-
-uchar
-i2c_reg_read(uchar i2c_addr, uchar reg)
-{
-	uchar 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);
-}
-
-int i2c_set_bus_num(unsigned int bus)
-{
-#ifdef CFG_I2C2_OFFSET
-	if (bus > 1) {
-#else
-	if (bus > 0) {
-#endif
-		return -1;
-	}
-
-	i2c_bus_num = bus;
-
-	return 0;
-}
-
-int i2c_set_bus_speed(unsigned int speed)
-{
-	return -1;
-}
-
-unsigned int i2c_get_bus_num(void)
-{
-	return i2c_bus_num;
-}
-
-unsigned int i2c_get_bus_speed(void)
-{
-	return 0;
-}
-#endif /* CONFIG_HARD_I2C */
-#endif /* CONFIG_FSL_I2C */