9737fc7c26
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17006 a1c6a512-1295-4272-9138-f99709370657
347 lines
10 KiB
C
347 lines
10 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 by Richard S. La Charité III
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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#include "file.h"
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#include "lcd-remote.h"
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#include "adc.h"
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#include "scroll_engine.h"
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/*** definitions ***/
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#define LCD_REMOTE_CNTL_ADC_NORMAL 0xa0
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#define LCD_REMOTE_CNTL_ADC_REVERSE 0xa1
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#define LCD_REMOTE_CNTL_SHL_NORMAL 0xc0
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#define LCD_REMOTE_CNTL_SHL_REVERSE 0xc8
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#define LCD_REMOTE_CNTL_DISPLAY_ON_OFF 0xae
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#define LCD_REMOTE_CNTL_ENTIRE_ON_OFF 0xa4
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#define LCD_REMOTE_CNTL_REVERSE_ON_OFF 0xa6
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#define LCD_REMOTE_CNTL_NOP 0xe3
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#define LCD_REMOTE_CNTL_POWER_CONTROL 0x2b
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#define LCD_REMOTE_CNTL_SELECT_REGULATOR 0x20
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#define LCD_REMOTE_CNTL_SELECT_BIAS 0xa2
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#define LCD_REMOTE_CNTL_SELECT_VOLTAGE 0x81
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#define LCD_REMOTE_CNTL_INIT_LINE 0x40
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#define LCD_REMOTE_CNTL_SET_PAGE_ADDRESS 0xB0
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#define LCD_REMOTE_CNTL_HIGHCOL 0x10 /* Upper column address */
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#define LCD_REMOTE_CNTL_LOWCOL 0x00 /* Lower column address */
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#define CS_LO and_l(~0x00000004, &GPIO1_OUT)
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#define CS_HI or_l(0x00000004, &GPIO1_OUT)
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#define CLK_LO and_l(~0x10000000, &GPIO_OUT)
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#define CLK_HI or_l(0x10000000, &GPIO_OUT)
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#define DATA_LO and_l(~0x00040000, &GPIO1_OUT)
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#define DATA_HI or_l(0x00040000, &GPIO1_OUT)
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#define RS_LO and_l(~0x00010000, &GPIO_OUT)
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#define RS_HI or_l(0x00010000, &GPIO_OUT)
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static int xoffset; /* needed for flip */
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/* timeout counter for deasserting /CS after access, <0 means not counting */
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int remote_cs_countdown IDATA_ATTR = 0;
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#define CS_TIMEOUT (HZ/10)
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#ifdef HAVE_REMOTE_LCD_TICKING
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/* If set to true, will prevent "ticking" to headphones. */
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static bool emireduce = false;
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int remote_byte_delay = 0; /* used in lcd-remote-as-iriver.S */
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#endif
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bool remote_initialized = false;
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static int _remote_type = REMOTETYPE_UNPLUGGED;
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/* cached settings values */
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static bool cached_invert = false;
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static bool cached_flip = false;
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static int cached_contrast = DEFAULT_REMOTE_CONTRAST_SETTING;
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/*** hardware configuration ***/
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int lcd_remote_default_contrast(void)
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{
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return DEFAULT_REMOTE_CONTRAST_SETTING;
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}
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#ifdef HAVE_REMOTE_LCD_TICKING
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void lcd_remote_emireduce(bool state)
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{
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emireduce = state;
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}
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#endif
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void lcd_remote_powersave(bool on)
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{
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if (remote_initialized)
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{
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lcd_remote_write_command(LCD_REMOTE_CNTL_DISPLAY_ON_OFF | (on ? 0 : 1));
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lcd_remote_write_command(LCD_REMOTE_CNTL_ENTIRE_ON_OFF | (on ? 1 : 0));
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}
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}
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void lcd_remote_set_contrast(int val)
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{
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cached_contrast = val;
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if (remote_initialized)
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lcd_remote_write_command_ex(LCD_REMOTE_CNTL_SELECT_VOLTAGE, val);
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}
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void lcd_remote_set_invert_display(bool yesno)
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{
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cached_invert = yesno;
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if (remote_initialized)
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lcd_remote_write_command(LCD_REMOTE_CNTL_REVERSE_ON_OFF | (yesno?1:0));
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}
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/* turn the display upside down (call lcd_remote_update() afterwards) */
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void lcd_remote_set_flip(bool yesno)
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{
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cached_flip = yesno;
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if (yesno)
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{
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xoffset = 0;
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if (remote_initialized)
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{
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lcd_remote_write_command(LCD_REMOTE_CNTL_ADC_NORMAL);
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lcd_remote_write_command(LCD_REMOTE_CNTL_SHL_NORMAL);
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}
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}
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else
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{
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xoffset = 132 - LCD_REMOTE_WIDTH;
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if (remote_initialized)
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{
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lcd_remote_write_command(LCD_REMOTE_CNTL_ADC_REVERSE);
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lcd_remote_write_command(LCD_REMOTE_CNTL_SHL_REVERSE);
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}
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}
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}
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bool remote_detect(void)
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{
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return (GPIO_READ & 0x40000000)?false:true;
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}
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int remote_type(void)
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{
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return _remote_type;
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}
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void lcd_remote_on(void)
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{
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CS_HI;
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CLK_LO;
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lcd_remote_write_command(LCD_REMOTE_CNTL_SELECT_BIAS | 0x0);
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lcd_remote_write_command(LCD_REMOTE_CNTL_POWER_CONTROL | 0x5);
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sleep(1);
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lcd_remote_write_command(LCD_REMOTE_CNTL_POWER_CONTROL | 0x6);
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sleep(1);
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lcd_remote_write_command(LCD_REMOTE_CNTL_POWER_CONTROL | 0x7);
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lcd_remote_write_command(LCD_REMOTE_CNTL_SELECT_REGULATOR | 0x4); // 0x4 Select regulator @ 5.0 (default);
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sleep(1);
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lcd_remote_write_command(LCD_REMOTE_CNTL_INIT_LINE | 0x0); // init line
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lcd_remote_write_command(LCD_REMOTE_CNTL_SET_PAGE_ADDRESS | 0x0); // page address
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lcd_remote_write_command_ex(0x10, 0x00); // Column MSB + LSB
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lcd_remote_write_command(LCD_REMOTE_CNTL_DISPLAY_ON_OFF | 1);
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remote_initialized = true;
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lcd_remote_set_flip(cached_flip);
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lcd_remote_set_contrast(cached_contrast);
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lcd_remote_set_invert_display(cached_invert);
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}
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void lcd_remote_off(void)
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{
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remote_initialized = false;
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CLK_LO;
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CS_HI;
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}
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#ifndef BOOTLOADER
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/* Monitor remote hotswap */
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static void remote_tick(void)
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{
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static bool last_status = false;
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static int countdown = 0;
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static int init_delay = 0;
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bool current_status;
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int val;
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int level;
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current_status = remote_detect();
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/* Only report when the status has changed */
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if (current_status != last_status)
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{
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last_status = current_status;
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countdown = current_status ? 20*HZ : 1;
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}
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else
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{
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/* Count down until it gets negative */
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if (countdown >= 0)
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countdown--;
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if (current_status)
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{
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if (!(countdown % 8))
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{
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/* Determine which type of remote it is */
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level = disable_irq_save();
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val = adc_scan(ADC_REMOTEDETECT);
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restore_irq(level);
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if (val < ADCVAL_H100_LCD_REMOTE_HOLD)
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{
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if (val < ADCVAL_H100_LCD_REMOTE)
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if (val < ADCVAL_H300_LCD_REMOTE)
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_remote_type = REMOTETYPE_H300_LCD; /* hold off */
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else
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_remote_type = REMOTETYPE_H100_LCD; /* hold off */
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else
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if (val < ADCVAL_H300_LCD_REMOTE_HOLD)
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_remote_type = REMOTETYPE_H300_LCD; /* hold on */
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else
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_remote_type = REMOTETYPE_H100_LCD; /* hold on */
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if (--init_delay <= 0)
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{
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queue_broadcast(SYS_REMOTE_PLUGGED, 0);
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init_delay = 6;
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}
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}
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else
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{
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_remote_type = REMOTETYPE_H300_NONLCD; /* hold on or off */
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}
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}
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}
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else
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{
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if (countdown == 0)
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{
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_remote_type = REMOTETYPE_UNPLUGGED;
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queue_broadcast(SYS_REMOTE_UNPLUGGED, 0);
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}
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}
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}
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/* handle chip select timeout */
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if (remote_cs_countdown >= 0)
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remote_cs_countdown--;
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if (remote_cs_countdown == 0)
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CS_HI;
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}
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#endif
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void lcd_remote_init_device(void)
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{
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#ifdef IRIVER_H300_SERIES
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or_l(0x10010000, &GPIO_FUNCTION); /* GPIO16: RS
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GPIO28: CLK */
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or_l(0x00040006, &GPIO1_FUNCTION); /* GPO33: Backlight
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GPIO34: CS
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GPIO50: Data */
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or_l(0x10010000, &GPIO_ENABLE);
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or_l(0x00040006, &GPIO1_ENABLE);
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#else
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or_l(0x10010800, &GPIO_FUNCTION); /* GPIO11: Backlight
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GPIO16: RS
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GPIO28: CLK */
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or_l(0x00040004, &GPIO1_FUNCTION); /* GPIO34: CS
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GPIO50: Data */
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or_l(0x10010800, &GPIO_ENABLE);
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or_l(0x00040004, &GPIO1_ENABLE);
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#endif
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lcd_remote_clear_display();
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if (remote_detect())
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lcd_remote_on();
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#ifndef BOOTLOADER
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tick_add_task(remote_tick);
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#endif
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}
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/* Update the display.
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This must be called after all other LCD functions that change the display. */
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void lcd_remote_update(void)
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{
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int y;
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if (!remote_initialized)
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return;
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#ifdef HAVE_REMOTE_LCD_TICKING
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/* Adjust byte delay for emi reduction. */
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remote_byte_delay = emireduce ? cpu_frequency / 192800 - 100: 0;
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#endif
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/* Copy display bitmap to hardware */
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for (y = 0; y < LCD_REMOTE_FBHEIGHT; y++)
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{
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lcd_remote_write_command(LCD_REMOTE_CNTL_SET_PAGE_ADDRESS | y);
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lcd_remote_write_command(LCD_REMOTE_CNTL_HIGHCOL | ((xoffset >> 4) & 0xf));
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lcd_remote_write_command(LCD_REMOTE_CNTL_LOWCOL | (xoffset & 0xf));
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lcd_remote_write_data(lcd_remote_framebuffer[y], LCD_REMOTE_WIDTH);
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}
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}
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/* Update a fraction of the display. */
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void lcd_remote_update_rect(int x, int y, int width, int height)
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{
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int ymax;
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if (!remote_initialized)
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return;
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/* The Y coordinates have to work on even 8 pixel rows */
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ymax = (y + height-1) >> 3;
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y >>= 3;
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if(x + width > LCD_REMOTE_WIDTH)
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width = LCD_REMOTE_WIDTH - x;
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if (width <= 0)
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return; /* nothing left to do, 0 is harmful to lcd_write_data() */
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if(ymax >= LCD_REMOTE_FBHEIGHT)
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ymax = LCD_REMOTE_FBHEIGHT-1;
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#ifdef HAVE_REMOTE_LCD_TICKING
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/* Adjust byte delay for emi reduction */
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remote_byte_delay = emireduce ? cpu_frequency / 192800 - 100: 0;
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#endif
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/* Copy specified rectange bitmap to hardware */
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for (; y <= ymax; y++)
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{
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lcd_remote_write_command(LCD_REMOTE_CNTL_SET_PAGE_ADDRESS | y);
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lcd_remote_write_command(LCD_REMOTE_CNTL_HIGHCOL | (((x+xoffset) >> 4) & 0xf));
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lcd_remote_write_command(LCD_REMOTE_CNTL_LOWCOL | ((x+xoffset) & 0xf));
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lcd_remote_write_data(&lcd_remote_framebuffer[y][x], width);
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}
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}
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