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Diffstat (limited to 'firmware/target/arm/as3525/sansa-e200v2/button-e200v2.c')
-rw-r--r--firmware/target/arm/as3525/sansa-e200v2/button-e200v2.c248
1 files changed, 0 insertions, 248 deletions
diff --git a/firmware/target/arm/as3525/sansa-e200v2/button-e200v2.c b/firmware/target/arm/as3525/sansa-e200v2/button-e200v2.c
deleted file mode 100644
index 8170c1b895..0000000000
--- a/firmware/target/arm/as3525/sansa-e200v2/button-e200v2.c
+++ /dev/null
@@ -1,248 +0,0 @@
-/***************************************************************************
- * __________ __ ___.
- * Open \______ \ ____ ____ | | _\_ |__ _______ ___
- * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
- * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
- * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
- * \/ \/ \/ \/ \/
- * $Id$
- *
- * Copyright (C) 2006 by Barry Wardell
- *
- * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ****************************************************************************/
-
-/* Taken from button-h10.c by Barry Wardell and reverse engineering by MrH. */
-
-#include "system.h"
-#include "button.h"
-#include "backlight.h"
-#include "powermgmt.h"
-
-
-static bool hold_button = false;
-#ifndef BOOTLOADER
-static bool hold_button_old = false;
-#endif
-static unsigned short _dbop_din = 0;
-/* read_missed is true if buttons could not
- * be read (see lcd_button_support) */
-static bool read_missed = false;
-
-#define WHEEL_REPEAT_INTERVAL (HZ/4)
-/* in the lcd driver */
-extern bool lcd_button_support(void);
-
-void button_init_device(void)
-{
-
-}
-
-bool button_hold(void)
-{
- return hold_button;
-}
-
-#if !defined(BOOTLOADER) && defined(HAVE_SCROLLWHEEL)
-static void scrollwheel(unsigned short dbop_din)
-{
- /* current wheel values, parsed from dbop and the resulting button */
- unsigned wheel_value = 0;
- unsigned btn = BUTTON_NONE;
- /* old wheel values */
- static unsigned old_wheel_value = 0;
- static unsigned old_btn = BUTTON_NONE;
-
- /* getting BUTTON_REPEAT works like this: Remember when the btn value was
- * posted to the button_queue last, and if it was recent enough, generate
- * BUTTON_REPEAT
- */
- static long last_wheel_post = 0;
- /* Repeat is used for the scrollwheel acceleration. If high enough then
- * jump over some items */
- static unsigned repeat = 0;
- /* we omit 1 of 2 posts to the button_queue, that works better, so count */
- static int counter = 0;
- /* Read wheel
- * Bits 13 and 14 of DBOP_DIN change as follows:
- * Clockwise rotation 00 -> 01 -> 11 -> 10 -> 00
- * Counter-clockwise 00 -> 10 -> 11 -> 01 -> 00
- */
- static const unsigned char wheel_tbl[2][4] =
- {
- { 2, 0, 3, 1 }, /* Clockwise rotation */
- { 1, 3, 0, 2 }, /* Counter-clockwise */
- };
-
- if(hold_button)
- {
- repeat = counter = 0;
- return;
- }
-
- wheel_value = dbop_din & (1<<13|1<<14);
- wheel_value >>= 13;
-
- if (old_wheel_value == wheel_tbl[0][wheel_value])
- btn = BUTTON_SCROLL_FWD;
- else if (old_wheel_value == wheel_tbl[1][wheel_value])
- btn = BUTTON_SCROLL_BACK;
-
- if (btn != BUTTON_NONE)
- {
- if (btn != old_btn)
- {
- /* direction reversals nullify repeats */
- old_btn = btn;
- repeat = counter = 0;
- }
- /* wheel_delta will cause lists to jump over items,
- * we want this for fast scrolling, but we must keep it accurate
- * for slow scrolling */
- int wheel_delta = 0;
- /* generate repeats if quick enough, scroll slightly too */
- if (TIME_BEFORE(current_tick, last_wheel_post + WHEEL_REPEAT_INTERVAL))
- {
- btn |= BUTTON_REPEAT;
- wheel_delta = repeat>>1;
- }
-
- repeat += 3;
- /* the wheel is more reliable if we don't send ever change,
- * every 2th is basically one "physical click" is
- * 1 item in the rockbox menus */
- if (++counter >= 2 && queue_empty(&button_queue))
- {
- buttonlight_on();
- backlight_on();
- queue_post(&button_queue, btn, ((wheel_delta+1)<<24));
- /* message posted - reset count & last post to the queue */
- counter = 0;
- last_wheel_post = current_tick;
- }
- }
- if (repeat > 0 && !read_missed)
- repeat--;
-
- old_wheel_value = wheel_value;
-}
-#endif /* !defined(BOOTLOADER) && defined(HAVE_SCROLLWHEEL) */
-
-unsigned short button_read_dbop(void)
-{
- /*write a red pixel */
- if (!lcd_button_support())
- {
- read_missed = true;
- }
- if (!read_missed)
- {
- /* Set up dbop for input */
- while (!(DBOP_STAT & (1<<10))); /* Wait for fifo to empty */
- DBOP_CTRL |= (1<<19); /* Tri-state DBOP on read cycle */
- DBOP_CTRL &= ~(1<<16); /* disable output (1:write enabled) */
- DBOP_TIMPOL_01 = 0xe167e167; /* Set Timing & Polarity regs 0 & 1 */
- DBOP_TIMPOL_23 = 0xe167006e; /* Set Timing & Polarity regs 2 & 3 */
-
- DBOP_CTRL |= (1<<15); /* start read */
- while (!(DBOP_STAT & (1<<16))); /* wait for valid data */
-
- int delay=10;
- while(delay--); /* short delay before reading */
-
- _dbop_din = DBOP_DIN; /* Read dbop data*/
-
- /* Reset dbop for output */
- DBOP_TIMPOL_01 = 0x6e167; /* Set Timing & Polarity regs 0 & 1 */
- DBOP_TIMPOL_23 = 0xa167e06f; /* Set Timing & Polarity regs 2 & 3 */
- DBOP_CTRL |= (1<<16); /* Enable output (0:write disable) */
- DBOP_CTRL &= ~(1<<19); /* Tri-state when no active write */
- }
-#if !defined(BOOTLOADER) && defined(HAVE_SCROLLWHEEL)
- scrollwheel(_dbop_din);
-#endif
- read_missed = false;
- return _dbop_din;
-}
-
-unsigned short button_dbop_data(void)
-{
- return _dbop_din;
-}
-
-/*
- * Get button pressed from hardware
- */
-int button_read_device(void)
-{
- int btn = BUTTON_NONE;
- /* read buttons from dbop */
- unsigned short dbop = button_read_dbop();
-
- /* hold button */
- if(dbop & (1<<12))
- {
- hold_button = true;
- return btn;
- }
- else
- {
- hold_button = false;
- }
-
- if (dbop & (1<<8))
- btn |= BUTTON_POWER;
-
- if (!(dbop & (1<<15)))
- btn |= BUTTON_REC;
-
- /* Set afsel, so that we can read our buttons */
- GPIOC_AFSEL &= ~(1<<2|1<<3|1<<4|1<<5|1<<6);
- /* set dir so we can read our buttons (but reset the C pins first) */
- GPIOB_DIR &= ~(1<<4);
- GPIOC_DIR |= (1<<2|1<<3|1<<4|1<<5|1<<6);
- GPIOC_PIN(2) = (1<<2);
- GPIOC_PIN(3) = (1<<3);
- GPIOC_PIN(4) = (1<<4);
- GPIOC_PIN(5) = (1<<5);
- GPIOC_PIN(6) = (1<<6);
-
- GPIOC_DIR &= ~(1<<2|1<<3|1<<4|1<<5|1<<6);
-
- int delay = 8; /* small delay needed to read buttons correctly */
- while(delay--);
-
- /* direct GPIO connections */
- if (!GPIOC_PIN(2))
- btn |= BUTTON_UP;
- if (!GPIOC_PIN(3))
- btn |= BUTTON_LEFT;
- if (!GPIOC_PIN(4))
- btn |= BUTTON_SELECT;
- if (!GPIOC_PIN(5))
- btn |= BUTTON_RIGHT;
- if (!GPIOC_PIN(6))
- btn |= BUTTON_DOWN;
-
- /* return to settings needed for lcd */
- GPIOC_DIR |= (1<<2|1<<3|1<<4|1<<5|1<<6);
- GPIOC_AFSEL |= (1<<2|1<<3|1<<4|1<<5|1<<6);
-
-#ifndef BOOTLOADER
- /* light handling */
- if (hold_button != hold_button_old)
- {
- hold_button_old = hold_button;
- backlight_hold_changed(hold_button);
- }
-#endif /* BOOTLOADER */
- /* The int_btn variable is set in the button interrupt handler */
- return btn;
-}