mpc83xx: Update 83xx to use fsl_i2c.c

Update the 83xx tree to use I2C support in drivers/fsl_i2c.c.  Delete
cpu/mpc83xx/i2c.c, include/asm-ppc/i2c.h, and all references to those files.
Added multiple I2C bus support to fsl_i2c.c.

Signed-off-by: Timur Tabi <timur@freescale.com>

3 files changed, 3 insertions, 426 deletions

diff --git a/cpu/mpc83xx/Makefile b/cpu/mpc83xx/Makefile
index e254ef98f6..4b9dcc8180 100644
--- a/cpu/mpc83xx/Makefile
+++ b/cpu/mpc83xx/Makefile
@@ -29,7 +29,7 @@ LIB	= $(obj)lib$(CPU).a
 
 START	= start.o
 COBJS	= traps.o cpu.o cpu_init.o speed.o interrupts.o \
-	  i2c.o spd_sdram.o qe_io.o
+	  spd_sdram.o qe_io.o
 
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
diff --git a/cpu/mpc83xx/cpu.c b/cpu/mpc83xx/cpu.c
index 0bd05330de..1d169bab22 100644
--- a/cpu/mpc83xx/cpu.c
+++ b/cpu/mpc83xx/cpu.c
@@ -111,7 +111,7 @@ int checkcpu(void)
 }
 
 
-/**
+/*
  * Program a UPM with the code supplied in the table.
  *
  * The 'dummy' variable is used to increment the MAD. 'dummy' is
@@ -137,7 +137,7 @@ int checkcpu(void)
  * upm: 0=UPMA, 1=UPMB, 2=UPMC
  * table: Pointer to an array of values to program
  * size: Number of elements in the array.  Must be 64 or less.
-*/
+ */
 void upmconfig (uint upm, uint *table, uint size)
 {
 #if defined(CONFIG_MPC834X)
diff --git a/cpu/mpc83xx/i2c.c b/cpu/mpc83xx/i2c.c
deleted file mode 100644
index ce78491616..0000000000
--- a/cpu/mpc83xx/i2c.c
+++ /dev/null
@@ -1,423 +0,0 @@
-/*
- * (C) Copyright 2006 Freescale Semiconductor, Inc.
- *
- * (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
- *
- * 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
- *
- * Change log:
- *
- * 20050101: Eran Liberty (liberty@freescale.com)
- *           Initial file creating (porting from 85XX & 8260)
- * 20060601: Dave Liu (daveliu@freescale.com)
- *           Unified variable names for mpc83xx
- */
-
-#include <common.h>
-#include <command.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_HARD_I2C
-#include <i2c.h>
-#include <asm/i2c.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/* Initialize the bus pointer to whatever one the SPD EEPROM is on.
- * Default is bus 1.  This is necessary because the DDR initialization
- * runs from ROM, and we can't switch buses because we can't modify
- * the i2c_dev variable.  Everything gets straightened out once i2c_init
- * is called from RAM.  */
-
-#ifndef CFG_SPD_BUS_NUM
-#define CFG_SPD_BUS_NUM 1
-#endif
-
-static unsigned int i2c_bus_num = CFG_SPD_BUS_NUM;
-
-#if CFG_SPD_BUS_NUM == 1
-static volatile i2c_t *i2c_dev = I2C_1;
-#else
-static volatile i2c_t *i2c_dev = I2C_2;
-#endif
-
-static int i2c_bus_speed[2] = {0, 0};
-
-/*
- * Map the frequency divider to the FDR.  This data is taken from table 17-5
- * of the MPC8349EA reference manual, with duplicates removed.
- */
-static struct {
-    unsigned int divider;
-    u8 fdr;
-} i2c_speed_map[] =
-{
-	{0, 0x20},
-	{256, 0x20},
-	{288, 0x21},
-	{320, 0x22},
-	{352, 0x23},
-	{384, 0x24},
-	{416, 0x01},
-	{448, 0x25},
-	{480, 0x02},
-	{512, 0x26},
-	{576, 0x27},
-	{640, 0x28},
-	{704, 0x05},
-	{768, 0x29},
-	{832, 0x06},
-	{896, 0x2A},
-	{1024, 0x2B},
-	{1152, 0x08},
-	{1280, 0x2C},
-	{1536, 0x2D},
-	{1792, 0x2E},
-	{1920, 0x0B},
-	{2048, 0x2F},
-	{2304, 0x0C},
-	{2560, 0x30},
-	{3072, 0x31},
-	{3584, 0x32},
-	{3840, 0x0F},
-	{4096, 0x33},
-	{4608, 0x10},
-	{5120, 0x34},
-	{6144, 0x35},
-	{7168, 0x36},
-	{7680, 0x13},
-	{8192, 0x37},
-	{9216, 0x14},
-	{10240, 0x38},
-	{12288, 0x39},
-	{14336, 0x3A},
-	{15360, 0x17},
-	{16384, 0x3B},
-	{18432, 0x18},
-	{20480, 0x3C},
-	{24576, 0x3D},
-	{28672, 0x3E},
-	{30720, 0x1B},
-	{32768, 0x3F},
-	{36864, 0x1C},
-	{40960, 0x1D},
-	{49152, 0x1E},
-	{61440, 0x1F},
-	{-1, 0x1F}
-};
-
-#define NUM_I2C_SPEEDS (sizeof(i2c_speed_map) / sizeof(i2c_speed_map[0]))
-
-static int set_speed(unsigned int speed)
-{
-	unsigned long i2c_clk;
-	unsigned int divider, i;
-	u8 fdr = 0x3F;
-
-	i2c_clk = (i2c_bus_num == 2) ? gd->i2c2_clk : gd->i2c1_clk;
-
-	divider = i2c_clk / speed;
-
-	/* Scan i2c_speed_map[] for the closest matching divider.*/
-
-	for (i = 0; i < NUM_I2C_SPEEDS-1; i++) {
-		/* Locate our divider in between two entries in i2c_speed_map[] */
-		if ((divider >= i2c_speed_map[i].divider) &&
-		    (divider <= i2c_speed_map[i+1].divider)) {
-			/* Which one is closer? */
-			if ((divider - i2c_speed_map[i].divider) < (i2c_speed_map[i+1].divider - divider)) {
-				fdr = i2c_speed_map[i].fdr;
-			} else {
-				fdr = i2c_speed_map[i+1].fdr;
-			}
-			break;
-		}
-	}
-
-	writeb(fdr, &i2c_dev->fdr);
-	i2c_bus_speed[i2c_bus_num - 1] = speed;
-
-	return 0;
-}
-
-
-static void _i2c_init(int speed, int slaveadd)
-{
-	/* stop I2C controller */
-	writeb(0x00 , &i2c_dev->cr);
-
-	/* set clock */
-	set_speed(speed);
-
-	/* set default filter */
-	writeb(IC2_FDR,&i2c_dev->dfsrr);
-
-	/* write slave address */
-	writeb(slaveadd, &i2c_dev->adr);
-
-	/* clear status register */
-	writeb(I2C_CR_MTX, &i2c_dev->sr);
-
-	/* start I2C controller */
-	writeb(I2C_CR_MEN, &i2c_dev->cr);
-}
-
-void i2c_init(int speed, int slaveadd)
-{
-	/* Set both interfaces to the same speed and slave address */
-	/* Note: This function gets called twice - before and after
-	 * relocation to RAM.  The first time it's called, we are unable
-	 * to change buses, so whichever one 'i2c_dev' was initialized to
-	 * gets set twice.  When run from RAM both buses get set properly */
-
-	i2c_set_bus_num(1);
-	_i2c_init(speed, slaveadd);
-#ifdef	CFG_I2C2_OFFSET
-	i2c_set_bus_num(2);
-	_i2c_init(speed, slaveadd);
-	i2c_set_bus_num(1);
-#endif	/* CFG_I2C2_OFFSET */
-}
-
-static __inline__ int
-i2c_wait4bus (void)
-{
-	ulong timeval = get_timer (0);
-	while (readb(&i2c_dev->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->sr);
-
-		if (!(csr & I2C_SR_MIF))
-			continue;
-
-		writeb(0x0, &i2c_dev->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 && (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->cr);
-
-	writeb((dev << 1) | dir, &i2c_dev->dr);
-
-	if (i2c_wait (I2C_WRITE) < 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->cr);
-
-	for (i=0; i < length; i++) {
-		writeb(data[i], &i2c_dev->dr);
-
-		if (i2c_wait (I2C_WRITE) < 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->cr);
-
-	/* dummy read */
-	readb(&i2c_dev->dr);
-
-	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(I2C_CR_MEN | I2C_CR_MSTA |
-			       I2C_CR_TXAK,
-			       &i2c_dev->cr);
-
-		/* Generate stop on last byte */
-		if (i == length - 1)
-			writeb(I2C_CR_MEN | I2C_CR_TXAK, &i2c_dev->cr);
-
-		data[i] = readb(&i2c_dev->dr);
-	}
-	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(I2C_CR_MEN, &i2c_dev->cr);
-	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(I2C_CR_MEN, &i2c_dev->cr);
-	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, (uchar *)&tmp, 1);
-}
-
-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)
-{
-	if(bus == 1)
-	{
-		i2c_dev = I2C_1;
-	}
-#ifdef	CFG_I2C2_OFFSET
-	else if(bus == 2)
-	{
-		i2c_dev = I2C_2;
-	}
-#endif
-	else
-	{
-		return -1;
-	}
-	i2c_bus_num = bus;
-	return 0;
-}
-
-int i2c_set_bus_speed(unsigned int speed)
-{
-	return set_speed(speed);
-}
-
-unsigned int i2c_get_bus_num(void)
-{
-	return i2c_bus_num;
-}
-
-unsigned int i2c_get_bus_speed(void)
-{
-	return i2c_bus_speed[i2c_bus_num - 1];
-}
-#endif /* CONFIG_HARD_I2C */