mrobe 100: real time clock (if anybody recognises the RTC chip let me know)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16208 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 0 insertions, 269 deletions

diff --git a/firmware/target/coldfire/iriver/h100/sw_i2c-h100.c b/firmware/target/coldfire/iriver/h100/sw_i2c-h100.c
deleted file mode 100644
index 3b2cdc4042..0000000000
--- a/firmware/target/coldfire/iriver/h100/sw_i2c-h100.c
+++ /dev/null
@@ -1,269 +0,0 @@
-/***************************************************************************
- *             __________               __   ___.
- *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
- *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
- *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
- *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
- *                     \/            \/     \/    \/            \/
- * $Id$
- *
- * Copyright (C) 2006 by Miika Pekkarinen
- *
- * All files in this archive are subject to the GNU General Public License.
- * See the file COPYING in the source tree root for full license agreement.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ****************************************************************************/
-#include "system.h"
-#include "logf.h"
-#include "inttypes.h"
-
-#include "sw_i2c.h"
-
-/**
- * I2C-functions are copied and ported from fmradio.c.
- * later fixed, adapted and moved to a seperate file so they can be re-used by the rtc-ds1339c code by Robert Kukla
- */
-
-/* cute little functions, atomic read-modify-write */
-
-/* SCL is GPIO, 12 */
-#define SCL             ( 0x00001000 & GPIO_READ)
-#define SCL_OUT_LO and_l(~0x00001000, &GPIO_OUT)
-#define SCL_LO      or_l( 0x00001000, &GPIO_ENABLE)
-#define SCL_HI     and_l(~0x00001000, &GPIO_ENABLE)
-
-/* SDA is GPIO1, 13 */
-#define SDA             ( 0x00002000 & GPIO1_READ)
-#define SDA_OUT_LO and_l(~0x00002000, &GPIO1_OUT)
-#define SDA_LO      or_l( 0x00002000, &GPIO1_ENABLE)
-#define SDA_HI     and_l(~0x00002000, &GPIO1_ENABLE)
-
-/* delay loop to achieve 400kHz at 120MHz CPU frequency */
-#define DELAY   \
-    ({                                \
-        int _x_;                      \
-        asm volatile (                \
-            "move.l #21, %[_x_] \r\n" \
-        "1:                     \r\n" \
-            "subq.l #1, %[_x_]  \r\n" \
-            "bhi.b  1b          \r\n" \
-            : [_x_]"=&d"(_x_)         \
-        );                            \
-    })
-
-void sw_i2c_init(void)
-{
-    or_l(0x00001000, &GPIO_FUNCTION);
-    or_l(0x00002000, &GPIO1_FUNCTION);
-    SDA_HI;
-    SCL_HI;
-    SDA_OUT_LO;
-    SCL_OUT_LO;
-}
-
-/*   in: C=? D=?
- *  out: C=L D=L
- */
-static void sw_i2c_start(void)
-{
-    SCL_LO;
-    DELAY;
-    SDA_HI;
-    DELAY;
-    SCL_HI;
-    DELAY;
-    SDA_LO;
-    DELAY;
-    SCL_LO;
-}
-
-/*   in: C=L D=?
- *  out: C=H D=H
- */
-static void sw_i2c_stop(void)
-{
-    SDA_LO;
-    DELAY;
-    SCL_HI;
-    DELAY;
-    SDA_HI;
-}
-
-/*   in: C=L D=H
- *  out: C=L D=L
- */
-static void sw_i2c_ack(void)
-{
-    SDA_LO;
-    DELAY;
-    
-    SCL_HI;
-    DELAY;
-    SCL_LO;
-}
-
-/*   in: C=L D=H
- *  out: C=L D=H
- */
-static void sw_i2c_nack(void)
-{
-    SDA_HI;          /* redundant */
-    DELAY;
-    
-    SCL_HI;
-    DELAY;
-    SCL_LO;
-}
-
-/*   in: C=L D=?
- *  out: C=L D=H
- */
-static bool sw_i2c_getack(void)
-{
-    bool ret = true;
-/*    int count = 10; */
-
-    SDA_HI;   /* sets to input */
-    DELAY;
-    SCL_HI;
-    DELAY;
-
-/*    while (SDA && count--) */
-/*        DELAY; */
-    
-    if (SDA)
-        /* ack failed */
-        ret = false;
-    
-    SCL_LO;
-
-    return ret;
-}
-
-/*   in: C=L D=?
- *  out: C=L D=?
- */
-static void sw_i2c_outb(unsigned char byte)
-{
-    int i;
-
-    /* clock out each bit, MSB first */
-    for ( i=0x80; i; i>>=1 )
-    {
-        if ( i & byte )
-            SDA_HI;
-        else
-            SDA_LO;
-        DELAY;
-
-        SCL_HI;
-        DELAY;
-        SCL_LO;
-    }
-}
-
-/*   in: C=L D=?
- *  out: C=L D=H
- */
-static unsigned char sw_i2c_inb(void)
-{
-    int i;
-    unsigned char byte = 0;
-
-    SDA_HI;   /* sets to input */
-    
-    /* clock in each bit, MSB first */
-    for ( i=0x80; i; i>>=1 ) 
-    {
-        DELAY;
-        do {
-          SCL_HI;
-          DELAY;
-        }
-        while(SCL==0);    /* wait for any SCL clock stretching */
-        if ( SDA )
-            byte |= i;
-        SCL_LO;
-    }
-
-    return byte;
-}
-
-int sw_i2c_write(unsigned char chip, unsigned char location, const unsigned char* buf, int count)
-{
-    int i;
-
-    sw_i2c_start();
-    sw_i2c_outb((chip & 0xfe) | SW_I2C_WRITE);
-    if (!sw_i2c_getack())
-    {
-        sw_i2c_stop();
-        return -1;
-    }
-    
-    sw_i2c_outb(location);
-    if (!sw_i2c_getack())
-    {
-        sw_i2c_stop();
-        return -2;
-    }
-    
-    for (i=0; i<count; i++)
-    {
-        sw_i2c_outb(buf[i]);
-        if (!sw_i2c_getack())
-        {
-            sw_i2c_stop();
-            return -3;
-        }
-    }
-
-    sw_i2c_stop();
-    
-    return 0;
-}
-
-int sw_i2c_read(unsigned char chip, unsigned char location, unsigned char* buf, int count)
-{
-    int i;
-  
-    sw_i2c_start();
-    sw_i2c_outb((chip & 0xfe) | SW_I2C_WRITE);
-    if (!sw_i2c_getack())
-    {
-        sw_i2c_stop();
-        return -1;
-    }
-
-    sw_i2c_outb(location);
-    if (!sw_i2c_getack())
-    {
-        sw_i2c_stop();
-        return -2;
-    }
-    
-    sw_i2c_start();
-    sw_i2c_outb((chip & 0xfe) | SW_I2C_READ);
-    if (!sw_i2c_getack())
-    {
-        sw_i2c_stop();
-        return -3;
-    }
-    
-    for (i=0; i<count-1; i++)
-    {
-      buf[i] = sw_i2c_inb();
-      sw_i2c_ack();
-    }
-
-    /* 1byte min */
-    buf[i] = sw_i2c_inb();
-    sw_i2c_nack();
-        
-    sw_i2c_stop();
-    
-    return 0;
-}