Update from 2013.01 to 2013.07

[karo-tx-uboot.git] / board / pcippc2 / i2c.c

diff --git a/board/pcippc2/i2c.c b/board/pcippc2/i2c.c
deleted file mode 100644 (file)
index ab52562..0000000
--- a/board/pcippc2/i2c.c
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * (C) Copyright 2002
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * 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 <config.h>
-#include <common.h>
-#include <asm/io.h>
-
-#include "hardware.h"
-#include "i2c.h"
-
-static void            i2c_start       (void);
-static void            i2c_stop        (void);
-static int             i2c_write       (u8             data);
-static void            i2c_read        (u8 *           data);
-
-static inline void     i2c_port_start  (void);
-static inline void     i2c_clock       (unsigned int   val);
-static inline void     i2c_data        (unsigned int   val);
-static inline unsigned int
-                       i2c_in          (void);
-static inline void     i2c_write_bit   (unsigned int   val);
-static inline unsigned int
-                       i2c_read_bit    (void);
-
-static inline void     i2c_udelay      (unsigned int   time);
-
-int i2c_read_byte (
-  u8 *                 data,
-  u8                   dev,
-  u8                   offset)
-{
-  int                  err = 0;
-
-  i2c_start();
-
-  err = ! i2c_write(dev);
-
-  if (! err)
-  {
-    err = ! i2c_write(offset);
-  }
-
-  if (! err)
-  {
-    i2c_start();
-  }
-
-  if (! err)
-  {
-    err = ! i2c_write(dev | 0x01);
-  }
-
-  if (! err)
-  {
-    i2c_read(data);
-  }
-
-  i2c_stop();
-
-  return ! err;
-}
-
-static inline void i2c_udelay (
-  unsigned int         time)
-{
-  int                  v;
-
-  asm volatile("mtdec %0" : : "r" (time * ((CONFIG_SYS_BUS_CLK / 4) / 1000000)));
-
-  do
-  {
-    asm volatile("isync; mfdec %0" : "=r" (v));
-  } while (v >= 0);
-}
-
-  /* Low-level hardware access
-   */
-
-#define BIT_GPDATA             0x80000000
-#define BIT_GPCLK              0x40000000
-
-static inline void i2c_port_start (void)
-{
-  out32(REG(CPC0, GPDIR), in32(REG(CPC0, GPDIR)) & ~(BIT_GPCLK | BIT_GPDATA));
-  out32(REG(CPC0, GPOUT), in32(REG(CPC0, GPOUT)) & ~(BIT_GPCLK | BIT_GPDATA));
-  iobarrier_rw();
-
-  i2c_udelay(1);
-}
-
-static inline void i2c_clock (
-  unsigned int         val)
-{
-  if (val)
-  {
-    out32(REG(CPC0, GPDIR), in32(REG(CPC0, GPDIR)) & ~BIT_GPCLK);
-  }
-  else
-  {
-    out32(REG(CPC0, GPDIR), in32(REG(CPC0, GPDIR)) | BIT_GPCLK);
-  }
-
-  iobarrier_rw();
-
-  i2c_udelay(1);
-}
-
-static inline void i2c_data (
-  unsigned int         val)
-{
-  if (val)
-  {
-    out32(REG(CPC0, GPDIR), in32(REG(CPC0, GPDIR)) & ~BIT_GPDATA);
-  }
-  else
-  {
-    out32(REG(CPC0, GPDIR), in32(REG(CPC0, GPDIR)) | BIT_GPDATA);
-  }
-
-  iobarrier_rw();
-
-  i2c_udelay(1);
-}
-
-static inline unsigned int i2c_in (void)
-{
-  unsigned int         val = ((in32(REG(CPC0, GPIN)) & BIT_GPDATA) != 0)?1:0;
-
-  iobarrier_rw();
-
-  return val;
-}
-
-
-  /* Protocol implementation
-   */
-
-static inline void i2c_write_bit (
-  unsigned int         val)
-{
-  i2c_data(val);
-  i2c_udelay(10);
-  i2c_clock(1);
-  i2c_udelay(10);
-  i2c_clock(0);
-  i2c_udelay(10);
-}
-
-static inline unsigned int i2c_read_bit (void)
-{
-  unsigned int         val;
-
-  i2c_data(1);
-  i2c_udelay(10);
-
-  i2c_clock(1);
-  i2c_udelay(10);
-
-  val = i2c_in();
-
-  i2c_clock(0);
-  i2c_udelay(10);
-
-  return val;
-}
-
-unsigned int i2c_reset (void)
-{
-  unsigned int         val;
-  int i;
-
-  i2c_port_start();
-
-  i=0;
-  do {
-    i2c_udelay(10);
-    i2c_clock(0);
-    i2c_udelay(10);
-    i2c_clock(1);
-    i2c_udelay(10);
-    val = i2c_in();
-    i++;
-  }  while ((i<9)&&(val==0));
-  return (val);
-}
-
-
-static void i2c_start (void)
-{
-  i2c_data(1);
-  i2c_clock(1);
-  i2c_udelay(10);
-  i2c_data(0);
-  i2c_udelay(10);
-  i2c_clock(0);
-  i2c_udelay(10);
-}
-
-static void i2c_stop (void)
-{
-  i2c_data(0);
-  i2c_udelay(10);
-  i2c_clock(1);
-  i2c_udelay(10);
-  i2c_data(1);
-  i2c_udelay(10);
-}
-
-static int i2c_write (
-  u8                   data)
-{
-  unsigned int         i;
-
-  for (i = 0; i < 8; i++)
-  {
-    i2c_write_bit(data >> 7);
-    data <<= 1;
-  }
-
-  return i2c_read_bit() == 0;
-}
-
-static void i2c_read (
-  u8 *                 data)
-{
-  unsigned int         i;
-  u8                   val = 0;
-
-  for (i = 0; i < 8; i++)
-  {
-    val <<= 1;
-    val |= i2c_read_bit();
-  }
-
-  *data = val;
-  i2c_write_bit(1); /* NoAck */
-}