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 /* SPDX-License-Identifier: BSD-2-Clause */
 
 /*
  *
  * Copyright (C) 2024 Kevin Kirspel
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #include <bsp.h>
 #include <stdio.h>
 #include <rtems.h>
 #include <rtems/libio.h>
 #include <rtems/error.h>
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
 #include <bsp/fatal.h>
 #include <bsp/irq.h>
 #include <bsp/niosv.h>
 
 #include <rtems/score/riscv-utility.h>
 
 /* Local Definitaions */
 /* Local Structures */
 /* Local Functions */
 static void status_led_turn_on( uint32_t index );
 static void status_led_turn_off( uint32_t index );
 /* Local Variables */
 
 /* status_led_initialize --
  *     This routine registers the status led device
  *
  * PARAMETERS:
  *     major - major led device number
  *     minor - minor led device number (not used)
  *     arg - device initialize argument
  *
  * RETURNS:
  *     RTEMS error code (RTEMS_SUCCESSFUL if device initialized successfuly)
  */
 rtems_device_driver status_led_initialize (
   rtems_device_major_number major,
   rtems_device_minor_number minor,
   void *arg
 )
 {
   /* Local Variables */
   rtems_status_code status;
 
   /*
    * Register the devices
    */
   status = rtems_io_register_name ("/dev/status_led", major, minor );
   assert( status == RTEMS_SUCCESSFUL );
 
   return RTEMS_SUCCESSFUL;
 }
 
 /* status_led_open --
  *     Open status led device.
  *
  * PARAMETERS:
  *     major - major device number for led devices
  *     minor - minor device number for led
  *     arg - device opening argument
  *
  * RETURNS:
  *     RTEMS error code
  */
 rtems_device_driver status_led_open (
   rtems_device_major_number major,
   rtems_device_minor_number minor,
   void *arg
 )
 {
   return RTEMS_SUCCESSFUL;
 }
 
 /* status_led_close --
  *     Close status led device.
  *
  * PARAMETERS:
  *     major - major device number for led devices
  *     minor - minor device number for led
  *     arg - device close argument
  *
  * RETURNS:
  *     RTEMS error code
  */
 rtems_device_driver status_led_close (
   rtems_device_major_number major,
   rtems_device_minor_number minor,
   void *arg
 )
 {
   return RTEMS_SUCCESSFUL;
 }
 
 /* status_led_read --
  *     Read from the status led device
  *
  * PARAMETERS:
  *     major - major device number for led devices
  *     minor - minor device number for led
  *     arg - device read argument
  *
  * RETURNS:
  *     RTEMS error code
  */
 rtems_device_driver status_led_read (
   rtems_device_major_number major,
   rtems_device_minor_number minor,
   void *arg
 )
 {
   return RTEMS_SUCCESSFUL;
 }
 
 /* status_led_write --
  *     Write to the status led device
  *
  * PARAMETERS:
  *     major - major device number for led devices
  *     minor - minor device number for led
  *     arg - device write argument
  *
  * RETURNS:
  *     RTEMS error code
  */
 rtems_device_driver status_led_write (
   rtems_device_major_number major,
   rtems_device_minor_number minor,
   void *arg
 )
 {
   return RTEMS_SUCCESSFUL;
 }
 
 /* status_led_control --
  *     Handle status led device I/O control (IOCTL)
  *
  * PARAMETERS:
  *     major - major device number for led devices
  *     minor - minor device number for led
  *     arg - device ioctl argument
  *
  * RETURNS:
  *     RTEMS error code
  */
 rtems_device_driver status_led_control (
   rtems_device_major_number major,
   rtems_device_minor_number minor,
   void *arg
 )
 {
   /* Local Varaibles */
   rtems_libio_ioctl_args_t *args = arg;
   status_led_control_t *ctrl;
 
   /* Get Data */
   ctrl = ( status_led_control_t * )args->buffer;
   args->ioctl_return = 0;
 
   /* Parse Command */
   switch( args->command )
   {
     case IOCTL_STATUS_LED_TURN_ON :
       status_led_turn_on(ctrl->led_mask);
       break;
     case IOCTL_STATUS_LED_TURN_OFF :
       status_led_turn_off(ctrl->led_mask);
       break;
     default :
       args->ioctl_return = -1;
       break;
   }
   /* OK */
   return RTEMS_SUCCESSFUL;
 }
 
 /* status_led_turn_on --
  *     Turns the LED on
  *
  * PARAMETERS:
  *
  * RETURNS:
  *
  */
 void status_led_turn_on( uint32_t mask )
 {
   LED_PIO_REGS->outclear = mask;
 }
 
 /* status_led_turn_off --
  *     Turns the LED on
  *
  * PARAMETERS:
  *
  * RETURNS:
  *
  */
 void status_led_turn_off( uint32_t mask )
 {
   LED_PIO_REGS->outset = mask;
 }

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