rockbox/apps/settings_menu.c

/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2002 Robert Hak
 *
 * 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 "config.h"

#include <stdio.h>
#include <stdbool.h>

#include "lcd.h"
#include "menu.h"
#include "mpeg.h"
#include "button.h"
#include "kernel.h"
#include "sprintf.h"
#include "settings.h"
#include "settings_menu.h"
#include "backlight.h"
#include "playlist.h"           /* for playlist_shuffle */
#include "fat.h"                /* For dotfile settings */
#include "powermgmt.h"
#include "rtc.h"
#include "ata.h"
#include "screens.h"
#ifdef HAVE_LCD_BITMAP
#include "peakmeter.h"
#endif
#include "lang.h"

static bool contrast(void)
{
    return set_int( str(LANG_CONTRAST), "", &global_settings.contrast, 
                    lcd_set_contrast, 1, 0, MAX_CONTRAST_SETTING );
}

#ifdef HAVE_LCD_BITMAP

/**
 * Menu to configure the battery display on status bar
 */
static bool battery_type(void)
{
    char* names[] = { str(LANG_DISPLAY_GRAPHIC), 
                      str(LANG_DISPLAY_NUMERIC)  };

    return set_option( str(LANG_BATTERY_DISPLAY), 
                       &global_settings.battery_type, names, 2, NULL);
}

/**
 * Menu to configure the volume display on status bar
 */
static bool volume_type(void)
{
    char* names[] = { str(LANG_DISPLAY_GRAPHIC), 
                      str(LANG_DISPLAY_NUMERIC) };

    return set_option( str(LANG_VOLUME_DISPLAY), &global_settings.volume_type,
                       names, 2, NULL);
}

#ifdef PM_DEBUG
static bool peak_meter_fps_menu(void) {
    bool retval = false;
    retval = set_int( "Refresh rate", "/s", 
             &peak_meter_fps,
             NULL, 1, 5, 40);
    return retval;
}
#endif /* PM_DEBUG */

/**
 * Menu to set the hold time of normal peaks.
 */
static bool peak_meter_hold(void) {
    bool retval = false;
    char* names[] = { str(LANG_OFF),
                      "200 ms ", "300 ms ", "500 ms ", "1 s ", "2 s ",
                      "3 s ", "4 s ", "5 s ", "6 s ", "7 s",
                      "8 s", "9 s", "10 s", "15 s", "20 s",
                      "30 s", "1 min"
    };
    retval = set_option( str(LANG_PM_PEAK_HOLD), 
                       &global_settings.peak_meter_hold, names,
                       18, NULL);

    peak_meter_init_times(global_settings.peak_meter_release,
        global_settings.peak_meter_hold, 
        global_settings.peak_meter_clip_hold);

    return retval;
}

/**
 * Menu to set the hold time of clips.
 */
static bool peak_meter_clip_hold(void) {
    bool retval = false;

    char* names[] = { str(LANG_PM_ETERNAL),
                      "1s ", "2s ", "3s ", "4s ", "5s ",
                      "6s ", "7s ", "8s ", "9s ", "10s",
                      "15s", "20s", "25s", "30s", "45s",
                      "60s", "90s", "2min", "3min", "5min",
                      "10min", "20min", "45min", "90min"
    };

    retval = set_option( str(LANG_PM_CLIP_HOLD), 
                       &global_settings.peak_meter_clip_hold, names,
                       25, peak_meter_set_clip_hold);

    peak_meter_init_times(global_settings.peak_meter_release,
        global_settings.peak_meter_hold, 
        global_settings.peak_meter_clip_hold);

    return retval;
}

/**
 * Menu to set the release time of the peak meter.
 */
static bool peak_meter_release(void)  {
    bool retval = false;

    /* The range of peak_meter_release is restricted so that it
       fits into a 7 bit number. The 8th bit is used for storing
       something else in the rtc ram.
       Also, the max value is 0x7e, since the RTC value 0xff is reserved */
    retval = set_int( str(LANG_PM_RELEASE), str(LANG_PM_UNITS_PER_READ), 
                    &global_settings.peak_meter_release,
             NULL, 1, 1, 0x7e);

    peak_meter_init_times(global_settings.peak_meter_release,
        global_settings.peak_meter_hold, 
        global_settings.peak_meter_clip_hold);

    return retval;
}

/**
 * Menu to select wether the scale of the meter 
 * displays dBfs of linear values.
 */
static bool peak_meter_scale(void) {
    bool retval = false;
    bool use_dbfs = global_settings.peak_meter_dbfs;
    retval = set_bool_options(str(LANG_PM_SCALE), 
        &use_dbfs, 
        str(LANG_PM_DBFS), str(LANG_PM_LINEAR));

    /* has the user really changed the scale? */
    if (use_dbfs != global_settings.peak_meter_dbfs) {

        /* store the change */
        global_settings.peak_meter_dbfs = use_dbfs;
        peak_meter_set_use_dbfs(use_dbfs);

        /* If the user changed the scale mode the meaning of
           peak_meter_min (peak_meter_max) has changed. Thus we have
           to convert the values stored in global_settings. */
        if (use_dbfs) {

            /* we only store -dBfs */
            global_settings.peak_meter_min = -peak_meter_get_min() / 100;
            global_settings.peak_meter_max = -peak_meter_get_max() / 100;
        } else {
            int max;
            
            /* linear percent */
            global_settings.peak_meter_min = peak_meter_get_min();

            /* converting dBfs -> percent results in a precision loss.
               I assume that the user doesn't bother that conversion
               dBfs <-> percent isn't symmetrical for odd values but that
               he wants 0 dBfs == 100%. Thus I 'correct' the percent value
               resulting from dBfs -> percent manually here */
            max = peak_meter_get_max();
            global_settings.peak_meter_max = max < 99 ? max : 100;
        }
        settings_apply_pm_range();
    }
    return retval;
}

/**
 * Adjust the min value of the value range that
 * the peak meter shall visualize.
 */
static bool peak_meter_min(void) {
    bool retval = false;
    if (global_settings.peak_meter_dbfs) {

        /* for dBfs scale */
        int range_max = -global_settings.peak_meter_max;
        int min = -global_settings.peak_meter_min;

        retval =  set_int(str(LANG_PM_MIN), str(LANG_PM_DBFS),
            &min, NULL, 1, -89, range_max);

        global_settings.peak_meter_min = - min;
    } 

    /* for linear scale */
    else {
        int min = global_settings.peak_meter_min;

        retval =  set_int(str(LANG_PM_MIN), "%",
            &min, NULL, 
            1, 0, global_settings.peak_meter_max - 1);

        global_settings.peak_meter_min = (unsigned char)min;
    }

    settings_apply_pm_range();
    return retval;
}


/**
 * Adjust the max value of the value range that
 * the peak meter shall visualize.
 */
static bool peak_meter_max(void) {
    bool retval = false;
    if (global_settings.peak_meter_dbfs) {

        /* for dBfs scale */
        int range_min = -global_settings.peak_meter_min;
        int max = -global_settings.peak_meter_max;;

        retval =  set_int(str(LANG_PM_MAX), str(LANG_PM_DBFS),
            &max, NULL, 1, range_min, 0);

        global_settings.peak_meter_max = - max;

    } 
    
    /* for linear scale */
    else {
        int max = global_settings.peak_meter_max;

        retval =  set_int(str(LANG_PM_MAX), "%",
            &max, NULL, 
            1, global_settings.peak_meter_min + 1, 100);

        global_settings.peak_meter_max = (unsigned char)max;
    }

    settings_apply_pm_range();
    return retval;
}

/**
 * Menu to select wether the meter is in
 * precision or in energy saver mode
 */
static bool peak_meter_performance(void) {
    bool retval = false;
    retval = set_bool_options(str(LANG_PM_PERFORMANCE), 
        &global_settings.peak_meter_performance, 
        str(LANG_PM_HIGH_PERFORMANCE), str(LANG_PM_ENERGY_SAVER));

    if (global_settings.peak_meter_performance) {
        peak_meter_fps = 25;
    } else {
        peak_meter_fps = 20;
    }
    return retval;
}

/**
 * Menu to configure the peak meter
 */
static bool peak_meter_menu(void) 
{
    int m;
    bool result;

    struct menu_items items[] = {
        { str(LANG_PM_RELEASE)  , peak_meter_release   },  
        { str(LANG_PM_PEAK_HOLD), peak_meter_hold      },  
        { str(LANG_PM_CLIP_HOLD), peak_meter_clip_hold },
        { str(LANG_PM_PERFORMANCE), peak_meter_performance },
#ifdef PM_DEBUG
        { "Refresh rate"        , peak_meter_fps_menu  },
#endif
        { str(LANG_PM_SCALE)    , peak_meter_scale     },
        { str(LANG_PM_MIN)      , peak_meter_min       },
        { str(LANG_PM_MAX)      , peak_meter_max       },
    };
    
    m=menu_init( items, sizeof items / sizeof(struct menu_items) );
    result = menu_run(m);
    menu_exit(m);
    return result;
}
#endif /* HAVE_LCD_BITMAP */

static bool shuffle(void)
{
    return set_bool( str(LANG_SHUFFLE), &global_settings.playlist_shuffle );
}

static bool repeat_mode(void)
{
    bool result;
    char* names[] = { str(LANG_OFF), 
                      str(LANG_REPEAT_ALL),
                      str(LANG_REPEAT_ONE) };

    int old_repeat = global_settings.repeat_mode;

    result = set_option( str(LANG_REPEAT), &global_settings.repeat_mode,
                         names, 3, NULL );

    if (old_repeat != global_settings.repeat_mode)
        mpeg_flush_and_reload_tracks();

    return result;
}

static bool play_selected(void)
{
    return set_bool( str(LANG_PLAY_SELECTED), &global_settings.play_selected );
}

static bool dir_filter(void)
{
    char* names[] = { str(LANG_FILTER_ALL),
                      str(LANG_FILTER_SUPPORTED),
                      str(LANG_FILTER_MUSIC),
                      str(LANG_FILTER_PLAYLIST) };

    return set_option( str(LANG_FILTER), &global_settings.dirfilter,
                       names, 4, NULL );
}

static bool sort_case(void)
{
    return set_bool( str(LANG_SORT_CASE), &global_settings.sort_case );
}

static bool resume(void)
{
    char* names[] = { str(LANG_SET_BOOL_NO), 
                      str(LANG_RESUME_SETTING_ASK),
                      str(LANG_RESUME_SETTING_ASK_ONCE),
                      str(LANG_SET_BOOL_YES) };

    return set_option( str(LANG_RESUME), &global_settings.resume,
                       names, 4, NULL );
}

static bool backlight_on_when_charging(void)
{
    bool result = set_bool(str(LANG_BACKLIGHT_ON_WHEN_CHARGING),
                           &global_settings.backlight_on_when_charging);
    backlight_set_on_when_charging(global_settings.backlight_on_when_charging);
    return result;
}

static bool backlight_timer(void)
{
    char* names[] = { str(LANG_OFF), str(LANG_ON),
                      "1s ", "2s ", "3s ", "4s ", "5s ",
                      "6s ", "7s ", "8s ", "9s ", "10s",
                      "15s", "20s", "25s", "30s", "45s",
                      "60s", "90s"};

    return set_option(str(LANG_BACKLIGHT), &global_settings.backlight_timeout,
                      names, 19, backlight_set_timeout );
}

static bool poweroff_idle_timer(void)
{
    char* names[] = { str(LANG_OFF),
                      "1m ", "2m ", "3m ", "4m ", "5m ",
                      "6m ", "7m ", "8m ", "9m ", "10m",
                      "15m", "30m", "45m", "60m"};

    return set_option(str(LANG_POWEROFF_IDLE), &global_settings.poweroff,
                      names, 15, set_poweroff_timeout);
}

static bool scroll_speed(void)
{
    return set_int(str(LANG_SCROLL), "Hz", &global_settings.scroll_speed, 
                   &lcd_scroll_speed, 1, 1, 10 );
}


static bool scroll_delay(void)
{
    int dummy = global_settings.scroll_delay * (HZ/10);
    int rc = set_int(str(LANG_SCROLL_DELAY), "ms", &dummy, 
                     &lcd_scroll_delay, 100, 0, 2500 );
    global_settings.scroll_delay = dummy / (HZ/10);
    return rc;
}

#ifdef HAVE_LCD_BITMAP
static bool scroll_step(void)
{
    return set_int(str(LANG_SCROLL_STEP_EXAMPLE), "pixels",
                   &global_settings.scroll_step,
                   &lcd_scroll_step, 1, 1, LCD_WIDTH );
}
#endif

static bool bidir_limit(void)
{
    return set_int(str(LANG_BIDIR_SCROLL), "%", &global_settings.bidir_limit, 
                   &lcd_bidir_scroll, 25, 0, 200 );
}

#ifndef SIMULATOR
/**
 * Menu to set the battery capacity
 */
static bool battery_capacity(void)
{
    return set_int(str(LANG_BATTERY_CAPACITY), "mAh", &global_settings.battery_capacity, 
                   &set_battery_capacity, 50, 1500, BATTERY_CAPACITY_MAX );
}
#endif

#ifdef HAVE_CHARGE_CTRL
static bool deep_discharge(void)
{
    bool result;
    result = set_bool( str(LANG_DISCHARGE), &global_settings.discharge );
    charge_restart_level = global_settings.discharge ? 
        CHARGE_RESTART_LO : CHARGE_RESTART_HI;
    return result;
}
static bool trickle_charge(void)
{
    bool result;
    result = set_bool( str(LANG_TRICKLE_CHARGE), &global_settings.trickle_charge );
    enable_trickle_charge(global_settings.trickle_charge);
    return result;
}
#endif

#ifdef HAVE_LCD_BITMAP
static bool timedate_set(void)
{
    int timedate[7]; /* hour,minute,second,year,month,day,dayofweek */
    bool result;

#ifdef HAVE_RTC
    timedate[0] = rtc_read(0x03); /* hour   */
    timedate[1] = rtc_read(0x02); /* minute */
    timedate[2] = rtc_read(0x01); /* second */
    timedate[3] = rtc_read(0x07); /* year   */
    timedate[4] = rtc_read(0x06); /* month  */
    timedate[5] = rtc_read(0x05); /* day    */
    /* day of week not read, calculated */
    /* hour   */
    timedate[0] = ((timedate[0] & 0x30) >> 4) * 10 + (timedate[0] & 0x0f); 
    /* minute */
    timedate[1] = ((timedate[1] & 0x70) >> 4) * 10 + (timedate[1] & 0x0f); 
    /* second */
    timedate[2] = ((timedate[2] & 0x70) >> 4) * 10 + (timedate[2] & 0x0f); 
    /* year   */
    timedate[3] = ((timedate[3] & 0xf0) >> 4) * 10 + (timedate[3] & 0x0f); 
    /* month  */
    timedate[4] = ((timedate[4] & 0x10) >> 4) * 10 + (timedate[4] & 0x0f); 
    /* day    */
    timedate[5] = ((timedate[5] & 0x30) >> 4) * 10 + (timedate[5] & 0x0f);
#endif

    result = set_time(str(LANG_TIME),timedate);

#ifdef HAVE_RTC
    if(timedate[0] != -1) {
        /* hour   */
        timedate[0] = ((timedate[0]/10) << 4 | timedate[0]%10) & 0x3f; 
        /* minute */
        timedate[1] = ((timedate[1]/10) << 4 | timedate[1]%10) & 0x7f; 
        /* second */
        timedate[2] = ((timedate[2]/10) << 4 | timedate[2]%10) & 0x7f; 
        /* year   */
        timedate[3] = ((timedate[3]/10) << 4 | timedate[3]%10) & 0xff; 
        /* month  */
        timedate[4] = ((timedate[4]/10) << 4 | timedate[4]%10) & 0x1f; 
        /* day    */
        timedate[5] = ((timedate[5]/10) << 4 | timedate[5]%10) & 0x3f; 

        rtc_write(0x03, timedate[0] | (rtc_read(0x03) & 0xc0)); /* hour */
        rtc_write(0x02, timedate[1] | (rtc_read(0x02) & 0x80)); /* minute */
        rtc_write(0x01, timedate[2] | (rtc_read(0x01) & 0x80)); /* second */
        rtc_write(0x07, timedate[3]);                           /* year */
        rtc_write(0x06, timedate[4] | (rtc_read(0x06) & 0xe0)); /* month */
        rtc_write(0x05, timedate[5] | (rtc_read(0x05) & 0xc0)); /* day */
        rtc_write(0x04, timedate[6] | (rtc_read(0x04) & 0xf8)); /* dayofweek */
        rtc_write(0x00, 0x00); /* 0.1 + 0.01 seconds */
    }
#endif
    return result;
}

static bool timeformat_set(void)
{
    char* names[] = { str(LANG_24_HOUR_CLOCK),
                      str(LANG_12_HOUR_CLOCK) };

    return set_option(str(LANG_TIMEFORMAT), &global_settings.timeformat, names, 2, NULL);
}
#endif

static bool spindown(void)
{
    return set_int(str(LANG_SPINDOWN), "s", &global_settings.disk_spindown,
                   ata_spindown, 1, 3, 254 );
}

#ifdef HAVE_ATA_POWER_OFF
static bool poweroff(void)
{
    bool rc = set_bool(str(LANG_POWEROFF), &global_settings.disk_poweroff);
    ata_poweroff(global_settings.disk_poweroff);
    return rc;
}
#endif

static bool buffer_margin(void)
{
    return set_int(str(LANG_MP3BUFFER_MARGIN), "s",
                   &global_settings.buffer_margin,
                   mpeg_set_buffer_margin, 1, 0, 7 );
}

static bool ff_rewind_min_step(void) 
{ 
    char* names[] = { "1s", "2s", "3s", "4s",
                      "5s", "6s", "8s", "10s",
                      "15s", "20s", "25s", "30s",
                      "45s", "60s" };

    return set_option(str(LANG_FFRW_STEP), &global_settings.ff_rewind_min_step,
                      names, 14, NULL ); 
} 

static bool ff_rewind_accel(void) 
{ 
    char* names[] = { str(LANG_OFF), "2x/1s", "2x/2s", "2x/3s", 
                      "2x/4s", "2x/5s", "2x/6s", "2x/7s", 
                      "2x/8s", "2x/9s", "2x/10s", "2x/11s",
                      "2x/12s", "2x/13s", "2x/14s", "2x/15s", };

    return set_option(str(LANG_FFRW_ACCEL), &global_settings.ff_rewind_accel, 
                      names, 16, NULL ); 
} 

static bool browse_current(void)
{
    return set_bool( str(LANG_FOLLOW), &global_settings.browse_current );
}

static bool playback_settings_menu(void)
{
    int m;
    bool result;

    struct menu_items items[] = {
        { str(LANG_SHUFFLE), shuffle },
        { str(LANG_REPEAT), repeat_mode },
        { str(LANG_PLAY_SELECTED), play_selected },
        { str(LANG_RESUME), resume },
        { str(LANG_FFRW_STEP), ff_rewind_min_step },
        { str(LANG_FFRW_ACCEL), ff_rewind_accel },
        { str(LANG_MP3BUFFER_MARGIN), buffer_margin },
    };

    bool old_shuffle = global_settings.playlist_shuffle;
    
    m=menu_init( items, sizeof items / sizeof(struct menu_items) );
    result = menu_run(m);
    menu_exit(m);

    if (old_shuffle != global_settings.playlist_shuffle)
    {
        if (global_settings.playlist_shuffle)
        {
            randomise_playlist(current_tick);
        }
        else
        {
            sort_playlist(true);
        }
    }
    return result;
}

static bool reset_settings(void)
{
    bool done=false;
    int line;
 
    lcd_clear_display();

#ifdef HAVE_LCD_CHARCELLS
    line = 0;
#else
    line = 1;
    lcd_puts(0,0,str(LANG_RESET_ASK_RECORDER));
#endif
    lcd_puts(0,line,str(LANG_RESET_CONFIRM));
    lcd_puts(0,line+1,str(LANG_RESET_CANCEL));

    lcd_update();
     
    while(!done) {
        switch(button_get(true)) {
        case BUTTON_PLAY:
            settings_reset();
            settings_apply();
            lcd_clear_display();
            lcd_puts(0,1,str(LANG_RESET_DONE_CLEAR));
            done = true;
            break;

#ifdef HAVE_LCD_BITMAP
        case BUTTON_OFF:
#else
        case BUTTON_STOP:
#endif
            lcd_clear_display();
            lcd_puts(0,1,str(LANG_RESET_DONE_CANCEL));
            done = true;
            break;

        case SYS_USB_CONNECTED:
            usb_screen();
            return true;
        }
    }

    lcd_puts(0,0,str(LANG_RESET_DONE_SETTING));
    lcd_update();
    sleep(HZ);
    return false;
}

static bool fileview_settings_menu(void)
{
    int m;
    bool result;

    struct menu_items items[] = {
        { str(LANG_CASE_MENU),    sort_case           },
        { str(LANG_FILTER),       dir_filter          },
        { str(LANG_FOLLOW),       browse_current      },
    };

    m = menu_init( items, sizeof items / sizeof(struct menu_items) );
    result = menu_run(m);
    menu_exit(m);
    return result;
}


static bool scroll_settings_menu(void)
{
    int m;
    bool result;

    struct menu_items items[] = {
        { str(LANG_SCROLL_SPEED),     scroll_speed    },
        { str(LANG_SCROLL_DELAY),    scroll_delay    },  
#ifdef HAVE_LCD_BITMAP
        { str(LANG_SCROLL_STEP),     scroll_step     },  
#endif
        { str(LANG_BIDIR_SCROLL),    bidir_limit    },  
    };

    m = menu_init( items, sizeof items / sizeof(struct menu_items) );
    result = menu_run(m);
    menu_exit(m);
    return result;
}



static bool display_settings_menu(void)
{
    int m;
    bool result;

    struct menu_items items[] = {
        { str(LANG_SCROLL_MENU),     scroll_settings_menu },  
        { str(LANG_BACKLIGHT),       backlight_timer },
        { str(LANG_BACKLIGHT_ON_WHEN_CHARGING), backlight_on_when_charging },
        { str(LANG_CONTRAST),        contrast        },  
#ifdef HAVE_LCD_BITMAP
        { str(LANG_PM_MENU),         peak_meter_menu },  
        { str(LANG_VOLUME_DISPLAY),  volume_type },
        { str(LANG_BATTERY_DISPLAY), battery_type },
#endif
    };
    
    m=menu_init( items, sizeof items / sizeof(struct menu_items) );
    result = menu_run(m);
    menu_exit(m);
    return result;
}

static bool system_settings_menu(void)
{
    int m;
    bool result;

    struct menu_items items[] = {
        { str(LANG_SPINDOWN),    spindown        },
#ifdef HAVE_ATA_POWER_OFF
        { str(LANG_POWEROFF),    poweroff        },
#endif
#ifndef SIMULATOR
        { str(LANG_BATTERY_CAPACITY), battery_capacity },
#endif
#ifdef HAVE_CHARGE_CTRL
        { str(LANG_DISCHARGE),        deep_discharge   },
        { str(LANG_TRICKLE_CHARGE),   trickle_charge   },
#endif
#ifdef HAVE_LCD_BITMAP
        { str(LANG_TIME),        timedate_set    },
        { str(LANG_TIMEFORMAT),  timeformat_set  },
#endif
        { str(LANG_POWEROFF_IDLE),    poweroff_idle_timer },
        { str(LANG_RESET),       reset_settings },
    };
    
    m=menu_init( items, sizeof items / sizeof(struct menu_items) );
    result = menu_run(m);
    menu_exit(m);
    return result;
}

bool settings_menu(void)
{
    int m;
    bool result;

    struct menu_items items[] = {
        { str(LANG_PLAYBACK),        playback_settings_menu },
        { str(LANG_FILE),            fileview_settings_menu },
        { str(LANG_DISPLAY),         display_settings_menu  },
        { str(LANG_SYSTEM),          system_settings_menu   },
    };
    
    m = menu_init( items, sizeof items / sizeof(struct menu_items) );
    result = menu_run(m);
    menu_exit(m);
    return result;
}

/* -----------------------------------------------------------------
 * local variables:
 * eval: (load-file "../firmware/rockbox-mode.el")
 * end:
 */