gumstix utils: add char-driver, gpio-event, i2c and microwindows

2 files changed, 392 insertions, 0 deletions

diff --git a/packages/robostix-utils/robostix-cmdline/robostix.c b/packages/robostix-utils/robostix-cmdline/robostix.c
new file mode 100644
index 0000000000..be47b5c5a9
--- /dev/null
+++ b/packages/robostix-utils/robostix-cmdline/robostix.c
@@ -0,0 +1,278 @@
+/****************************************************************************
+*
+*   Copyright (c) 2006 Dave Hylands     <dhylands@gmail.com>
+*
+*   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.
+*
+*   Alternatively, this software may be distributed under the terms of BSD
+*   license.
+*
+*   See README and COPYING for more details.
+*
+****************************************************************************/
+/**
+*
+*  robostix.c
+*
+*  PURPOSE:
+*
+*   This implements the usermode program for talking to the robostix.
+*
+*****************************************************************************/
+
+/* ---- Include Files ---------------------------------------------------- */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "robostix.h"
+
+/* ---- Public Variables ------------------------------------------------- */
+
+int gFd = -1;
+
+int gVal;
+
+/* ---- Private Constants and Types -------------------------------------- */
+/* ---- Private Variables ------------------------------------------------ */
+
+typedef struct
+{
+    const   char   *cmdStr;
+    const   char   *argStr;
+    const   char   *helpStr;
+    int           (*parseArgs)( int argc, char **argv );
+    void          (*execFunc)( int cmd );
+    int             cmd;
+
+} Cmd;
+
+int     ParseNone( int argc, char **argv );
+int     ParseOnOffArg( int argc, char **argv );
+int     ParseOnOffPulseArg( int argc, char **argv );
+void    Usage( void );
+
+void    Power( int cmd );
+void    ReadIOctl( int cmd );
+void    SimpleIOctl( int cmd );
+
+Cmd gCmd[] =
+{
+    { "power",  "on|off",           "Controls the robostix voltage regulators", ParseOnOffArg,      Power, -1 },
+    { "reset",  "on|off|pulse",     "Resets the robostix",                      ParseOnOffPulseArg, SimpleIOctl, ROBOSTIX_IOCTL_RESET },
+    { "245",    "on|off",           "Controls the 245 buffer chip",             ParseOnOffArg,      SimpleIOctl, ROBOSTIX_IOCTL_245_ENABLE },
+
+    { "sck",    "on|off",           "Sets/clears the SCK line",                 ParseOnOffArg,      SimpleIOctl, ROBOSTIX_IOCTL_SET_SCK },
+    { "ss",     "on|off",           "Sets/clears the SS line",                  ParseOnOffArg,      SimpleIOctl, ROBOSTIX_IOCTL_SET_SS },
+    { "txd",    "on|off",           "Sets/clears the IR-TXD line",              ParseOnOffArg,      SimpleIOctl, ROBOSTIX_IOCTL_SET_IR_TXD },
+    { "mosi",   "on|off",           "Sets/clears the MOSI line",                ParseOnOffArg,      SimpleIOctl, ROBOSTIX_IOCTL_SET_MOSI },
+
+    { "rxd",    "",                 "Reads the IR-RXD line",                    ParseNone,          ReadIOctl,   ROBOSTIX_IOCTL_GET_IR_RXD },
+    { "irq",    "",                 "Reads the TM-IRQ line",                    ParseNone,          ReadIOctl,   ROBOSTIX_IOCTL_GET_IRQ },
+    { "miso",   "",                 "Reads the MISO line",                      ParseNone,          ReadIOctl,   ROBOSTIX_IOCTL_GET_MISO },
+
+    { NULL }
+};
+
+/* ---- Private Function Prototypes -------------------------------------- */
+/* ---- Functions -------------------------------------------------------- */
+
+
+/****************************************************************************
+*
+*  main
+*
+***************************************************************************/
+
+int main( int argc, char **argv )
+{
+    char   *cmdStr;
+    int     argIdx;
+    Cmd    *cmd;
+
+    if ( argc == 1 )
+    {
+        Usage( );
+        exit( 0 );
+    }
+
+    if (( gFd = open( "/dev/robostix",  O_RDWR )) < 0 )
+    {
+        perror( "Unable to open /dev/robostix" );
+        exit( 1 );
+    }
+
+    argIdx = 1;
+    cmdStr = argv[ argIdx++ ];
+
+    for ( cmd = gCmd; cmd->cmdStr != NULL; cmd++ ) 
+    {
+        if ( strcasecmp( cmdStr, cmd->cmdStr ) == 0 )
+        {
+            break;
+        }
+    }
+    if ( cmd->cmdStr == NULL )
+    {
+        fprintf( stderr, "Unrecognized command: '%s'\n", cmdStr );
+        exit( 1 );
+    }
+
+    if ( cmd->parseArgs( argc - argIdx, &argv[ argIdx ] ))
+    {
+        cmd->execFunc( cmd->cmd );
+    }
+
+    close( gFd );
+
+    exit( 0 );
+    return 0;
+
+} // main
+
+/****************************************************************************
+*
+*  Checks to see if the argument is on/off (or equivalent)
+*
+***************************************************************************/
+
+int IsOnOffArg( int argc, char **argv )
+{
+    if (( strcasecmp( *argv, "on" ) == 0 )
+    ||  ( strcasecmp( *argv, "t" ) == 0 )
+    ||  ( strcasecmp( *argv, "1" ) == 0 ))
+    {
+        gVal = 1;
+        return 1;
+    }
+
+    if (( strcasecmp( *argv, "off" ) == 0 )
+    ||  ( strcasecmp( *argv, "f" ) == 0 )
+    ||  ( strcasecmp( *argv, "0" ) == 0 ))
+    {
+        gVal = 0;
+        return 1;
+    }
+
+    return 0;
+
+} // IsOnOffArg
+
+/****************************************************************************
+*
+*  Parses no arguments
+*
+***************************************************************************/
+
+int ParseNone( int argc, char **argv )
+{
+    return 1;
+
+} // ParseNone
+
+/****************************************************************************
+*
+*  Parses a command line argument for legel on/off values
+*
+***************************************************************************/
+
+int ParseOnOffArg( int argc, char **argv )
+{
+    if ( IsOnOffArg( argc, argv ))
+    {
+        return 1;
+    }
+
+    fprintf( stderr, "Expecting on/off, found: '%s'\n", *argv );
+    return 0;
+
+} // ParseOnOffArg
+
+/****************************************************************************
+*
+*  Parses a command line argument for legel on/off values
+*
+***************************************************************************/
+
+int ParseOnOffPulseArg( int argc, char **argv )
+{
+    if (( strcasecmp( *argv, "pulse" ) == 0 )
+    ||  ( strcasecmp( *argv, "2" ) == 0 ))
+    {
+        gVal = 2;
+        return 1;
+    }
+
+    if ( IsOnOffArg( argc, argv ))
+    {
+        return 1;
+    }
+
+    fprintf( stderr, "Expecting on/off/pulse, found: '%s'\n", *argv );
+    return 0;
+
+} // ParseOnoffPulseArg
+
+/****************************************************************************
+*
+*  Power
+*
+***************************************************************************/
+
+void Power( int cmd )
+{
+    SimpleIOctl( ROBOSTIX_IOCTL_POWER_VCC5 );
+
+} // Power
+
+/****************************************************************************
+*
+*  SimpleIOctl
+*
+***************************************************************************/
+
+void SimpleIOctl( int cmd )
+{
+    if ( ioctl( gFd, cmd, gVal ) != 0 )
+    {
+        fprintf( stderr, "ioctl call failed: %d\n", errno );
+    }
+
+} // SimpleIOctl
+
+/****************************************************************************
+*
+*  SimpleIOctl
+*
+***************************************************************************/
+
+void ReadIOctl( int cmd )
+{
+    if ( ioctl( gFd, cmd, &gVal ) != 0 )
+    {
+        fprintf( stderr, "ioctl call failed: %d\n", errno );
+    }
+
+} // ReadIOctl
+
+/****************************************************************************
+*
+*  Usage
+*
+***************************************************************************/
+
+void Usage( void )
+{
+    Cmd *cmd;
+
+    for ( cmd = gCmd; cmd->cmdStr != NULL; cmd++ ) 
+    {
+        printf( "%-12s %-12s %s\n", cmd->cmdStr, cmd->argStr, cmd->helpStr );
+    }
+
+} // Usage
+
diff --git a/packages/robostix-utils/robostix-cmdline/robostix.h b/packages/robostix-utils/robostix-cmdline/robostix.h
new file mode 100644
index 0000000000..0d860bc7a4
--- /dev/null
+++ b/packages/robostix-utils/robostix-cmdline/robostix.h
@@ -0,0 +1,114 @@
+/****************************************************************************
+*
+*   Copyright (c) 2006 Dave Hylands     <dhylands@gmail.com>
+*
+*   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.
+*
+*   Alternatively, this software may be distributed under the terms of BSD
+*   license.
+*
+*   See README and COPYING for more details.
+*
+****************************************************************************/
+/**
+*
+*  robostix_drv.h
+*
+*  PURPOSE:
+*
+*   This implements a driver for using the robostix from the gumstix
+*
+*   Initially, this contains the required support to emulate enough of the
+*   parallel port interface to allow avrdude to program the ATMega128.
+*
+*****************************************************************************/
+
+#if !defined( LINUX_ROBOSTIX_H )
+#define LINUX_ROBOSTIX_H )
+
+/* ---- Include Files ----------------------------------------------------- */
+
+#include <linux/ioctl.h>
+
+/* ---- Constants and Types ----------------------------------------------- */
+
+#define ROBOSTIX_MAJOR          240
+
+#define ROBOSTIX_IOCTL_MAGIC    'R'
+
+/**
+ *  Deefines for each of the commands. Note that since we want to reduce
+ *  the possibility that a user mode program gets out of sync with a given 
+ *  driver, we explicitly assign a value to each enumeration. This makes
+ *  it more difficult to stick new ioctl's in the middle of the list.
+ */
+
+typedef enum
+{
+    ROBOSTIX_CMD_FIRST          = 0x80,
+
+    ROBOSTIX_CMD_POWER_VCC5     = 0x80,
+    ROBOSTIX_CMD_RESET          = 0x81,
+    ROBOSTIX_CMD_245_ENABLE     = 0x82,
+    ROBOSTIX_CMD_SET_SCK        = 0x83,
+    ROBOSTIX_CMD_SET_SS         = 0x84,
+    ROBOSTIX_CMD_SET_IR_TXD     = 0x85,
+    ROBOSTIX_CMD_GET_IR_RXD     = 0x86,
+    ROBOSTIX_CMD_SET_MOSI       = 0x87,
+    ROBOSTIX_CMD_GET_MISO       = 0x88,
+    ROBOSTIX_CMD_GET_IRQ        = 0x89,
+    ROBOSTIX_CMD_DELAY_USEC     = 0x8A,     // value is hardocded in uisp DAPA.C
+
+    /* Insert new ioctls here                                               */
+
+    ROBOSTIX_CMD_LAST,
+
+} ROBOSTIX_CMD;
+
+/*
+ * The following are arguments to the various ioctl's
+ */
+
+#define ROBOSTIX_PIN_OFF        0
+#define ROBOSTIX_PIN_ON         1
+#define ROBOSTIX_PIN_PULSE      2   // only used or Reset
+
+/*
+ * Definitions for the actual ioctl commands
+ */
+
+#define ROBOSTIX_IOCTL_POWER_VCC5   _IO(    ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_POWER_VCC5 )         // arg is int
+#define ROBOSTIX_IOCTL_RESET        _IO(    ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_RESET )              // arg is int
+#define ROBOSTIX_IOCTL_245_ENABLE   _IO(    ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_245_ENABLE )         // arg is int
+#define ROBOSTIX_IOCTL_SET_SCK      _IO(    ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_SET_SCK )            // arg is int
+#define ROBOSTIX_IOCTL_SET_SS       _IO(    ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_SET_SS )             // arg is int
+#define ROBOSTIX_IOCTL_SET_IR_TXD   _IO(    ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_SET_IR_TXD )         // arg is int
+#define ROBOSTIX_IOCTL_GET_IR_RXD   _IOR(   ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_GET_IR_RXD, int )    // arg is int *
+#define ROBOSTIX_IOCTL_SET_MOSI     _IO(    ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_SET_MOSI )           // arg is int
+#define ROBOSTIX_IOCTL_GET_MISO     _IOR(   ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_GET_MISO, int )      // arg is int *
+#define ROBOSTIX_IOCTL_GET_IRQ      _IOR(   ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_GET_IRQ, int )       // arg is int *
+#define ROBOSTIX_IOCTL_DELAY_USEC   _IO(    ROBOSTIX_IOCTL_MAGIC, ROBOSTIX_CMD_DELAY_USEC )         // arg is int
+
+
+/*
+ * Definitions for sysctl. The top level define has to be unique system wide.
+ * The kernel defines values 1 thru about 10 (see include/linunx/sysctl.h)
+ */
+
+#define CTL_ROBOSTIX    0x526F626F  /* 'Robo' in hex form */
+
+/*
+ * The following are for entries in /proc/sys/robostix
+ */
+
+enum
+{
+    CTL_ROBOSTIX_DEBUG_TRACE    = 101,
+    CTL_ROBOSTIX_DEBUG_IOCTL    = 102,
+    CTL_ROBOSTIX_DEBUG_ERROR    = 103
+};
+
+#endif  // LINUX_ROBOSTIX_H
+