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rockbox/firmware/target/coldfire/iriver/lcd-remote-iriver.c
Nicolas Pennequin 357ffb3c46 Convert the whole codebase to UTF-8, except docs/COMMITTERS and tools/creative.c, which need checking. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17369 a1c6a512-1295-4272-9138-f99709370657
2008-05-05 10:32:46 +00:00

347 lines
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C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Richard S. La Charité III
*
* 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 "system.h"
#include "file.h"
#include "lcd-remote.h"
#include "adc.h"
#include "scroll_engine.h"
/*** definitions ***/
#define LCD_REMOTE_CNTL_ADC_NORMAL 0xa0
#define LCD_REMOTE_CNTL_ADC_REVERSE 0xa1
#define LCD_REMOTE_CNTL_SHL_NORMAL 0xc0
#define LCD_REMOTE_CNTL_SHL_REVERSE 0xc8
#define LCD_REMOTE_CNTL_DISPLAY_ON_OFF 0xae
#define LCD_REMOTE_CNTL_ENTIRE_ON_OFF 0xa4
#define LCD_REMOTE_CNTL_REVERSE_ON_OFF 0xa6
#define LCD_REMOTE_CNTL_NOP 0xe3
#define LCD_REMOTE_CNTL_POWER_CONTROL 0x2b
#define LCD_REMOTE_CNTL_SELECT_REGULATOR 0x20
#define LCD_REMOTE_CNTL_SELECT_BIAS 0xa2
#define LCD_REMOTE_CNTL_SELECT_VOLTAGE 0x81
#define LCD_REMOTE_CNTL_INIT_LINE 0x40
#define LCD_REMOTE_CNTL_SET_PAGE_ADDRESS 0xB0
#define LCD_REMOTE_CNTL_HIGHCOL 0x10 /* Upper column address */
#define LCD_REMOTE_CNTL_LOWCOL 0x00 /* Lower column address */
#define CS_LO and_l(~0x00000004, &GPIO1_OUT)
#define CS_HI or_l(0x00000004, &GPIO1_OUT)
#define CLK_LO and_l(~0x10000000, &GPIO_OUT)
#define CLK_HI or_l(0x10000000, &GPIO_OUT)
#define DATA_LO and_l(~0x00040000, &GPIO1_OUT)
#define DATA_HI or_l(0x00040000, &GPIO1_OUT)
#define RS_LO and_l(~0x00010000, &GPIO_OUT)
#define RS_HI or_l(0x00010000, &GPIO_OUT)
static int xoffset; /* needed for flip */
/* timeout counter for deasserting /CS after access, <0 means not counting */
int remote_cs_countdown IDATA_ATTR = 0;
#define CS_TIMEOUT (HZ/10)
#ifdef HAVE_REMOTE_LCD_TICKING
/* If set to true, will prevent "ticking" to headphones. */
static bool emireduce = false;
int remote_byte_delay = 0; /* used in lcd-remote-as-iriver.S */
#endif
bool remote_initialized = false;
static int _remote_type = REMOTETYPE_UNPLUGGED;
/* cached settings values */
static bool cached_invert = false;
static bool cached_flip = false;
static int cached_contrast = DEFAULT_REMOTE_CONTRAST_SETTING;
/*** hardware configuration ***/
int lcd_remote_default_contrast(void)
{
return DEFAULT_REMOTE_CONTRAST_SETTING;
}
#ifdef HAVE_REMOTE_LCD_TICKING
void lcd_remote_emireduce(bool state)
{
emireduce = state;
}
#endif
void lcd_remote_powersave(bool on)
{
if (remote_initialized)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_DISPLAY_ON_OFF | (on ? 0 : 1));
lcd_remote_write_command(LCD_REMOTE_CNTL_ENTIRE_ON_OFF | (on ? 1 : 0));
}
}
void lcd_remote_set_contrast(int val)
{
cached_contrast = val;
if (remote_initialized)
lcd_remote_write_command_ex(LCD_REMOTE_CNTL_SELECT_VOLTAGE, val);
}
void lcd_remote_set_invert_display(bool yesno)
{
cached_invert = yesno;
if (remote_initialized)
lcd_remote_write_command(LCD_REMOTE_CNTL_REVERSE_ON_OFF | (yesno?1:0));
}
/* turn the display upside down (call lcd_remote_update() afterwards) */
void lcd_remote_set_flip(bool yesno)
{
cached_flip = yesno;
if (yesno)
{
xoffset = 0;
if (remote_initialized)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_ADC_NORMAL);
lcd_remote_write_command(LCD_REMOTE_CNTL_SHL_NORMAL);
}
}
else
{
xoffset = 132 - LCD_REMOTE_WIDTH;
if (remote_initialized)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_ADC_REVERSE);
lcd_remote_write_command(LCD_REMOTE_CNTL_SHL_REVERSE);
}
}
}
bool remote_detect(void)
{
return (GPIO_READ & 0x40000000)?false:true;
}
int remote_type(void)
{
return _remote_type;
}
void lcd_remote_on(void)
{
CS_HI;
CLK_LO;
lcd_remote_write_command(LCD_REMOTE_CNTL_SELECT_BIAS | 0x0);
lcd_remote_write_command(LCD_REMOTE_CNTL_POWER_CONTROL | 0x5);
sleep(1);
lcd_remote_write_command(LCD_REMOTE_CNTL_POWER_CONTROL | 0x6);
sleep(1);
lcd_remote_write_command(LCD_REMOTE_CNTL_POWER_CONTROL | 0x7);
lcd_remote_write_command(LCD_REMOTE_CNTL_SELECT_REGULATOR | 0x4); // 0x4 Select regulator @ 5.0 (default);
sleep(1);
lcd_remote_write_command(LCD_REMOTE_CNTL_INIT_LINE | 0x0); // init line
lcd_remote_write_command(LCD_REMOTE_CNTL_SET_PAGE_ADDRESS | 0x0); // page address
lcd_remote_write_command_ex(0x10, 0x00); // Column MSB + LSB
lcd_remote_write_command(LCD_REMOTE_CNTL_DISPLAY_ON_OFF | 1);
remote_initialized = true;
lcd_remote_set_flip(cached_flip);
lcd_remote_set_contrast(cached_contrast);
lcd_remote_set_invert_display(cached_invert);
}
void lcd_remote_off(void)
{
remote_initialized = false;
CLK_LO;
CS_HI;
}
#ifndef BOOTLOADER
/* Monitor remote hotswap */
static void remote_tick(void)
{
static bool last_status = false;
static int countdown = 0;
static int init_delay = 0;
bool current_status;
int val;
int level;
current_status = remote_detect();
/* Only report when the status has changed */
if (current_status != last_status)
{
last_status = current_status;
countdown = current_status ? 20*HZ : 1;
}
else
{
/* Count down until it gets negative */
if (countdown >= 0)
countdown--;
if (current_status)
{
if (!(countdown % 8))
{
/* Determine which type of remote it is */
level = disable_irq_save();
val = adc_scan(ADC_REMOTEDETECT);
restore_irq(level);
if (val < ADCVAL_H100_LCD_REMOTE_HOLD)
{
if (val < ADCVAL_H100_LCD_REMOTE)
if (val < ADCVAL_H300_LCD_REMOTE)
_remote_type = REMOTETYPE_H300_LCD; /* hold off */
else
_remote_type = REMOTETYPE_H100_LCD; /* hold off */
else
if (val < ADCVAL_H300_LCD_REMOTE_HOLD)
_remote_type = REMOTETYPE_H300_LCD; /* hold on */
else
_remote_type = REMOTETYPE_H100_LCD; /* hold on */
if (--init_delay <= 0)
{
queue_broadcast(SYS_REMOTE_PLUGGED, 0);
init_delay = 6;
}
}
else
{
_remote_type = REMOTETYPE_H300_NONLCD; /* hold on or off */
}
}
}
else
{
if (countdown == 0)
{
_remote_type = REMOTETYPE_UNPLUGGED;
queue_broadcast(SYS_REMOTE_UNPLUGGED, 0);
}
}
}
/* handle chip select timeout */
if (remote_cs_countdown >= 0)
remote_cs_countdown--;
if (remote_cs_countdown == 0)
CS_HI;
}
#endif
void lcd_remote_init_device(void)
{
#ifdef IRIVER_H300_SERIES
or_l(0x10010000, &GPIO_FUNCTION); /* GPIO16: RS
GPIO28: CLK */
or_l(0x00040006, &GPIO1_FUNCTION); /* GPO33: Backlight
GPIO34: CS
GPIO50: Data */
or_l(0x10010000, &GPIO_ENABLE);
or_l(0x00040006, &GPIO1_ENABLE);
#else
or_l(0x10010800, &GPIO_FUNCTION); /* GPIO11: Backlight
GPIO16: RS
GPIO28: CLK */
or_l(0x00040004, &GPIO1_FUNCTION); /* GPIO34: CS
GPIO50: Data */
or_l(0x10010800, &GPIO_ENABLE);
or_l(0x00040004, &GPIO1_ENABLE);
#endif
lcd_remote_clear_display();
if (remote_detect())
lcd_remote_on();
#ifndef BOOTLOADER
tick_add_task(remote_tick);
#endif
}
/* Update the display.
This must be called after all other LCD functions that change the display. */
void lcd_remote_update(void)
{
int y;
if (!remote_initialized)
return;
#ifdef HAVE_REMOTE_LCD_TICKING
/* Adjust byte delay for emi reduction. */
remote_byte_delay = emireduce ? cpu_frequency / 192800 - 100: 0;
#endif
/* Copy display bitmap to hardware */
for (y = 0; y < LCD_REMOTE_FBHEIGHT; y++)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_SET_PAGE_ADDRESS | y);
lcd_remote_write_command(LCD_REMOTE_CNTL_HIGHCOL | ((xoffset >> 4) & 0xf));
lcd_remote_write_command(LCD_REMOTE_CNTL_LOWCOL | (xoffset & 0xf));
lcd_remote_write_data(lcd_remote_framebuffer[y], LCD_REMOTE_WIDTH);
}
}
/* Update a fraction of the display. */
void lcd_remote_update_rect(int x, int y, int width, int height)
{
int ymax;
if (!remote_initialized)
return;
/* The Y coordinates have to work on even 8 pixel rows */
ymax = (y + height-1) >> 3;
y >>= 3;
if(x + width > LCD_REMOTE_WIDTH)
width = LCD_REMOTE_WIDTH - x;
if (width <= 0)
return; /* nothing left to do, 0 is harmful to lcd_write_data() */
if(ymax >= LCD_REMOTE_FBHEIGHT)
ymax = LCD_REMOTE_FBHEIGHT-1;
#ifdef HAVE_REMOTE_LCD_TICKING
/* Adjust byte delay for emi reduction */
remote_byte_delay = emireduce ? cpu_frequency / 192800 - 100: 0;
#endif
/* Copy specified rectange bitmap to hardware */
for (; y <= ymax; y++)
{
lcd_remote_write_command(LCD_REMOTE_CNTL_SET_PAGE_ADDRESS | y);
lcd_remote_write_command(LCD_REMOTE_CNTL_HIGHCOL | (((x+xoffset) >> 4) & 0xf));
lcd_remote_write_command(LCD_REMOTE_CNTL_LOWCOL | ((x+xoffset) & 0xf));
lcd_remote_write_data(&lcd_remote_framebuffer[y][x], width);
}
}
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