| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2006 by Linus Nielsen Feltzing |
| * |
| * 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. |
| * |
| ****************************************************************************/ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "file.h" |
| #include "lcd.h" |
| #include "scroll_engine.h" |
| #include "lcd-remote-target.h" |
| |
| /* The LCD in the iAudio M3/M5/X5 remote control is a Tomato LSI 0350 */ |
| |
| #define LCD_SET_DUTY_RATIO 0x48 |
| #define LCD_SELECT_ADC 0xa0 |
| #define LCD_SELECT_SHL 0xc0 |
| #define LCD_SET_COM0 0x44 |
| #define LCD_OSC_ON 0xab |
| #define LCD_SELECT_DCDC 0x64 |
| #define LCD_SELECT_RES 0x20 |
| #define LCD_SET_VOLUME 0x81 |
| #define LCD_SET_BIAS 0x50 |
| #define LCD_CONTROL_POWER 0x28 |
| #define LCD_DISPLAY_ON 0xae |
| #define LCD_SET_INITLINE 0x40 |
| #define LCD_SET_COLUMN 0x10 |
| #define LCD_SET_PAGE 0xb0 |
| #define LCD_SET_GRAY 0x88 |
| #define LCD_SET_PWM_FRC 0x90 |
| #define LCD_SET_POWER_SAVE 0xa8 |
| #define LCD_REVERSE 0xa6 |
| |
| #define CS_LO and_l(~0x00010000, &GPIO1_OUT) |
| #define CS_HI or_l( 0x00010000, &GPIO1_OUT) |
| #define CLK_LO and_l(~0x20000000, &GPIO_OUT) |
| #define CLK_HI or_l( 0x20000000, &GPIO_OUT) |
| #define DATA_LO and_l(~0x04000000, &GPIO_OUT) |
| #define DATA_HI or_l( 0x04000000, &GPIO_OUT) |
| #define RS_LO and_l(~0x00001000, &GPIO1_OUT) |
| #define RS_HI or_l( 0x00001000, &GPIO1_OUT) |
| |
| /* cached settings values */ |
| static bool cached_invert = false; |
| static bool cached_flip = false; |
| static int cached_contrast = DEFAULT_CONTRAST_SETTING; |
| |
| bool initialized = false; |
| |
| |
| int lcd_default_contrast(void) |
| { |
| return DEFAULT_CONTRAST_SETTING; |
| } |
| |
| void lcd_set_contrast(int val) |
| { |
| if (val < 0) |
| val = 0; |
| else if (val > 63) |
| val = 63; |
| |
| cached_contrast = val; |
| if (initialized) |
| lcd_write_command_e(LCD_SET_VOLUME, val); |
| } |
| |
| bool remote_detect(void) |
| { |
| return (GPIO_READ & 0x40000000) == 0; |
| } |
| |
| void lcd_on(void) |
| { |
| CS_HI; |
| CLK_HI; |
| sleep(HZ/100); |
| |
| lcd_write_command(LCD_SET_DUTY_RATIO); |
| lcd_write_command(0x70); /* 1/128 */ |
| |
| lcd_write_command(LCD_OSC_ON); |
| |
| lcd_write_command(LCD_SELECT_DCDC | 2); /* DC/DC 5xboost */ |
| |
| lcd_write_command(LCD_SELECT_RES | 7); /* Regulator resistor: 7.2 */ |
| |
| lcd_write_command(LCD_SET_BIAS | 6); /* 1/11 */ |
| |
| lcd_write_command(LCD_CONTROL_POWER | 7); /* All circuits ON */ |
| |
| sleep(3*HZ/100); |
| |
| lcd_write_command_e(LCD_SET_GRAY | 0, 0x00); |
| lcd_write_command_e(LCD_SET_GRAY | 1, 0x00); |
| lcd_write_command_e(LCD_SET_GRAY | 2, 0x0c); |
| lcd_write_command_e(LCD_SET_GRAY | 3, 0x00); |
| lcd_write_command_e(LCD_SET_GRAY | 4, 0xcc); |
| lcd_write_command_e(LCD_SET_GRAY | 5, 0x00); |
| lcd_write_command_e(LCD_SET_GRAY | 6, 0xcc); |
| lcd_write_command_e(LCD_SET_GRAY | 7, 0x0c); |
| |
| lcd_write_command(LCD_SET_PWM_FRC | 6); /* 3FRC + 12PWM */ |
| |
| lcd_write_command(LCD_DISPLAY_ON | 1); /* display on */ |
| |
| initialized = true; |
| |
| lcd_set_flip(cached_flip); |
| lcd_set_contrast(cached_contrast); |
| lcd_set_invert_display(cached_invert); |
| } |
| |
| void lcd_off(void) |
| { |
| initialized = false; |
| CS_HI; |
| RS_HI; |
| } |
| |
| void lcd_poweroff(void) |
| { |
| /* Set power save -> Power OFF (VDD - VSS) .. that's it */ |
| if (initialized) |
| lcd_write_command(LCD_SET_POWER_SAVE | 1); |
| } |
| |
| #ifndef BOOTLOADER |
| /* Monitor remote hotswap */ |
| static void lcd_tick(void) |
| { |
| static bool last_status = false; |
| static int countdown = 0; |
| bool current_status; |
| |
| 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 % 48)) |
| { |
| queue_broadcast(SYS_REMOTE_PLUGGED, 0); |
| } |
| } |
| else |
| { |
| if (countdown == 0) |
| { |
| queue_broadcast(SYS_REMOTE_UNPLUGGED, 0); |
| } |
| } |
| } |
| } |
| #endif |
| |
| void lcd_init_device(void) |
| { |
| or_l(0x24000000, &GPIO_OUT); |
| or_l(0x24000000, &GPIO_ENABLE); |
| or_l(0x24000000, &GPIO_FUNCTION); |
| |
| or_l(0x00011000, &GPIO1_OUT); |
| or_l(0x00011000, &GPIO1_ENABLE); |
| or_l(0x00011000, &GPIO1_FUNCTION); |
| |
| and_l(~0x40000000, &GPIO_OUT); |
| and_l(~0x40000000, &GPIO_ENABLE); |
| or_l(0x40000000, &GPIO_FUNCTION); |
| |
| lcd_clear_display(); |
| if (remote_detect()) |
| lcd_on(); |
| #ifndef BOOTLOADER |
| tick_add_task(lcd_tick); |
| #endif |
| } |
| |
| /* Helper function. */ |
| void lcd_mono_data(const unsigned char *data, int count); |
| |
| /* Performance function that works with an external buffer |
| note that by and bheight are in 8-pixel units! */ |
| void lcd_blit_mono(const unsigned char *data, int x, int by, int width, |
| int bheight, int stride) |
| { |
| if (initialized) |
| { |
| /* COM48-COM63 are not connected, so we need to skip those */ |
| while (bheight--) |
| { |
| lcd_write_command(LCD_SET_PAGE | ((by > 5 ? by + 2 : by) & 0xf)); |
| lcd_write_command_e(LCD_SET_COLUMN | ((x >> 4) & 0xf), x & 0xf); |
| |
| lcd_mono_data(data, width); |
| data += stride; |
| by++; |
| } |
| } |
| } |
| |
| /* Helper function for lcd_grey_phase_blit(). */ |
| void lcd_grey_data(unsigned char *values, unsigned char *phases, int count); |
| |
| /* Performance function that works with an external buffer |
| note that by and bheight are in 8-pixel units! */ |
| void lcd_blit_grey_phase(unsigned char *values, unsigned char *phases, |
| int x, int by, int width, int bheight, int stride) |
| { |
| if (initialized) |
| { |
| stride <<= 3; /* 8 pixels per block */ |
| while (bheight--) |
| { |
| lcd_write_command(LCD_SET_PAGE | ((by > 5 ? by + 2 : by) & 0xf)); |
| lcd_write_command_e(LCD_SET_COLUMN | ((x >> 4) & 0xf), x & 0xf); |
| |
| lcd_grey_data(values, phases, width); |
| values += stride; |
| phases += stride; |
| by++; |
| } |
| } |
| } |
| |
| /* Update the display. |
| This must be called after all other LCD functions that change the display. */ |
| void lcd_update(void) |
| { |
| int y; |
| if (initialized) |
| { |
| for(y = 0;y < LCD_FBHEIGHT;y++) |
| { |
| /* Copy display bitmap to hardware. |
| The COM48-COM63 lines are not connected so we have to skip |
| them. Further, the column address doesn't wrap, so we |
| have to update one page at a time. */ |
| lcd_write_command(LCD_SET_PAGE | (y > 5 ? y + 2 : y)); |
| lcd_write_command_e(LCD_SET_COLUMN | 0, 0); |
| lcd_write_data(lcd_framebuffer[y], LCD_WIDTH); |
| } |
| } |
| } |
| |
| /* Update a fraction of the display. */ |
| void lcd_update_rect(int x, int y, int width, int height) |
| { |
| if (initialized) |
| { |
| int ymax; |
| |
| /* The Y coordinates have to work on even 8 pixel rows */ |
| ymax = (y + height-1) >> 3; |
| y >>= 3; |
| |
| if(x + width > LCD_WIDTH) |
| width = LCD_WIDTH - x; |
| if (width <= 0) |
| return; /* nothing left to do, 0 is harmful to lcd_write_data() */ |
| if(ymax >= LCD_FBHEIGHT) |
| ymax = LCD_FBHEIGHT-1; |
| |
| /* Copy specified rectangle bitmap to hardware |
| COM48-COM63 are not connected, so we need to skip those */ |
| for (; y <= ymax; y++) |
| { |
| lcd_write_command(LCD_SET_PAGE | ((y > 5 ? y + 2 : y) & 0xf)); |
| lcd_write_command_e(LCD_SET_COLUMN | ((x >> 4) & 0xf), x & 0xf); |
| |
| lcd_write_data(&lcd_framebuffer[y][x], width); |
| } |
| } |
| } |
| |
| void lcd_set_invert_display(bool yesno) |
| { |
| cached_invert = yesno; |
| if (initialized) |
| lcd_write_command(LCD_REVERSE | yesno); |
| } |
| |
| void lcd_set_flip(bool yesno) |
| { |
| cached_flip = yesno; |
| if (initialized) |
| { |
| if(yesno) |
| { |
| lcd_write_command(LCD_SELECT_ADC | 0); |
| lcd_write_command(LCD_SELECT_SHL | 0); |
| lcd_write_command_e(LCD_SET_COM0, 16); |
| } |
| else |
| { |
| lcd_write_command(LCD_SELECT_ADC | 1); |
| lcd_write_command(LCD_SELECT_SHL | 8); |
| lcd_write_command_e(LCD_SET_COM0, 0); |
| } |
| } |
| } |