b37e6bc8c1
Change all lcd drivers to using a pointer to the static framebuffer instead of directly accessing the static array. This will let us later do fun things like dynamic framebuffer sizes (RaaA) or ability to use different buffers for different layers (dynamic skin backdrops!) Change-Id: I0a4d58a9d7b55e6c932131b929e5d4c9f9414b06
293 lines
8.2 KiB
C
293 lines
8.2 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) 2006 by Linus Nielsen Feltzing
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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 "scroll_engine.h"
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/* The LCD in the iAudio M3/M5/X5 remote control is a Tomato LSI 0350 */
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#define LCD_SET_DUTY_RATIO 0x48
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#define LCD_SELECT_ADC 0xa0
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#define LCD_SELECT_SHL 0xc0
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#define LCD_SET_COM0 0x44
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#define LCD_OSC_ON 0xab
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#define LCD_SELECT_DCDC 0x64
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#define LCD_SELECT_RES 0x20
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#define LCD_SET_VOLUME 0x81
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#define LCD_SET_BIAS 0x50
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#define LCD_CONTROL_POWER 0x28
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#define LCD_DISPLAY_ON 0xae
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#define LCD_SET_INITLINE 0x40
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#define LCD_SET_COLUMN 0x10
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#define LCD_SET_PAGE 0xb0
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#define LCD_SET_GRAY 0x88
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#define LCD_SET_PWM_FRC 0x90
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#define LCD_SET_POWER_SAVE 0xa8
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#define LCD_REVERSE 0xa6
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#define CS_LO and_l(~0x00000020, &GPIO1_OUT)
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#define CS_HI or_l(0x00000020, &GPIO1_OUT)
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#define CLK_LO and_l(~0x00004000, &GPIO_OUT)
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#define CLK_HI or_l(0x00004000, &GPIO_OUT)
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#define DATA_LO and_l(~0x00002000, &GPIO_OUT)
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#define DATA_HI or_l(0x00002000, &GPIO_OUT)
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#define RS_LO and_l(~0x00008000, &GPIO_OUT)
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#define RS_HI or_l(0x00008000, &GPIO_OUT)
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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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bool remote_initialized = false;
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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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#if 0 // FIXME
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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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if (on)
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lcd_remote_write_command(LCD_SET_POWER_SAVE | 1);
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else
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lcd_remote_write_command(LCD_SET_POWER_SAVE | 1);
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}
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}
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#endif
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void lcd_remote_set_contrast(int val)
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{
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if (val < 0)
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val = 0;
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else if (val > 63)
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val = 63;
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cached_contrast = val;
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if(remote_initialized)
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lcd_remote_write_command_ex(LCD_SET_VOLUME, val);
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}
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bool remote_detect(void)
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{
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return (GPIO_READ & 0x01000000)?false:true;
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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_HI;
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sleep(HZ/100);
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lcd_remote_write_command(LCD_SET_DUTY_RATIO);
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lcd_remote_write_command(0x70); /* 1/128 */
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lcd_remote_write_command(LCD_OSC_ON);
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lcd_remote_write_command(LCD_SELECT_DCDC | 2); /* DC/DC 5xboost */
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lcd_remote_write_command(LCD_SELECT_RES | 7); /* Regulator resistor: 7.2 */
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lcd_remote_write_command(LCD_SET_BIAS | 6); /* 1/11 */
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lcd_remote_write_command(LCD_CONTROL_POWER | 7); /* All circuits ON */
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sleep(3*HZ/100);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 0, 0x00);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 1, 0x00);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 2, 0x0c);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 3, 0x00);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 4, 0xcc);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 5, 0x00);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 6, 0xcc);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 7, 0x0c);
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lcd_remote_write_command(LCD_SET_PWM_FRC | 6); /* 3FRC + 12PWM */
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lcd_remote_write_command(LCD_DISPLAY_ON | 1); /* display on */
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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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CS_HI;
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RS_HI;
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}
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void lcd_remote_poweroff(void)
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{
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/* Set power save -> Power OFF (VDD - VSS) .. that's it */
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if (remote_initialized)
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lcd_remote_write_command(LCD_SET_POWER_SAVE | 1);
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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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bool current_status;
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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 % 48))
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{
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queue_broadcast(SYS_REMOTE_PLUGGED, 0);
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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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queue_broadcast(SYS_REMOTE_UNPLUGGED, 0);
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}
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}
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}
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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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or_l(0x0000e000, &GPIO_OUT);
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or_l(0x0000e000, &GPIO_ENABLE);
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or_l(0x0000e000, &GPIO_FUNCTION);
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or_l(0x00000020, &GPIO1_OUT);
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or_l(0x00000020, &GPIO1_ENABLE);
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or_l(0x00000020, &GPIO1_FUNCTION);
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and_l(~0x01000000, &GPIO_OUT);
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and_l(~0x01000000, &GPIO_ENABLE);
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or_l(0x01000000, &GPIO_FUNCTION);
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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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{
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for(y = 0;y < LCD_REMOTE_FBHEIGHT;y++)
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{
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/* Copy display bitmap to hardware.
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The COM48-COM63 lines are not connected so we have to skip
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them. Further, the column address doesn't wrap, so we
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have to update one page at a time. */
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lcd_remote_write_command(LCD_SET_PAGE | (y > 5 ? y + 2 : y));
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lcd_remote_write_command_ex(LCD_SET_COLUMN | 0, 0);
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lcd_remote_write_data(FBREMOTEADDR(0, y), LCD_REMOTE_WIDTH);
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}
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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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if(remote_initialized)
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{
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int ymax;
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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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/* Copy specified rectangle bitmap to hardware
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COM48-COM63 are not connected, so we need to skip those */
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for (; y <= ymax; y++)
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{
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lcd_remote_write_command(LCD_SET_PAGE
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| ((y > 5 ? y + 2 : y) & 0xf));
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lcd_remote_write_command_ex(LCD_SET_COLUMN | ((x >> 4) & 0xf),
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x & 0xf);
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lcd_remote_write_data(FBREMOTEADDR(x,y), width);
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}
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}
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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_REVERSE | yesno);
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}
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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(remote_initialized)
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{
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if(yesno)
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{
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lcd_remote_write_command(LCD_SELECT_ADC | 0);
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lcd_remote_write_command(LCD_SELECT_SHL | 0);
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lcd_remote_write_command_ex(LCD_SET_COM0, 16);
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}
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else
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{
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lcd_remote_write_command(LCD_SELECT_ADC | 1);
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lcd_remote_write_command(LCD_SELECT_SHL | 8);
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lcd_remote_write_command_ex(LCD_SET_COM0, 0);
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}
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}
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}
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