/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id:$ * * Copyright (C) 2010 Marcin Bukat * * 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 "kernel.h" #include "lcd.h" /*** definitions ***/ /* TOMATO LSI 0350 - definitions and slightly tweaked functions * taken from lcd-remote-iaudio.c */ #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 LCD_RESET 0xe2 /* cached settings */ static bool cached_invert = false; static bool cached_flip = false; static int cached_contrast = DEFAULT_CONTRAST_SETTING; bool lcd_initialized = false; /*** hardware configuration ***/ int lcd_default_contrast(void) { return DEFAULT_CONTRAST_SETTING; } void lcd_powersave(bool on) { /* What is the point of having else construct here? */ if(lcd_initialized) { if (on) lcd_write_command(LCD_SET_POWER_SAVE | 1); else lcd_write_command(LCD_SET_POWER_SAVE | 1); } } void lcd_set_contrast(int val) { if (val < MIN_CONTRAST_SETTING) val = MIN_CONTRAST_SETTING; else if (val > MAX_CONTRAST_SETTING) val = MAX_CONTRAST_SETTING; cached_contrast = val; if(lcd_initialized) lcd_write_command_e(LCD_SET_VOLUME, val); } void lcd_set_invert_display(bool yesno) { cached_invert = yesno; if(lcd_initialized) lcd_write_command(LCD_REVERSE | yesno); } /* turn the display upside down (call lcd_update() afterwards) */ void lcd_set_flip(bool yesno) { cached_flip = yesno; if(lcd_initialized) { if(yesno) { lcd_write_command(LCD_SELECT_ADC | 1); lcd_write_command(LCD_SELECT_SHL | 0); lcd_write_command_e(LCD_SET_COM0, 0); } else { lcd_write_command(LCD_SELECT_ADC | 0); lcd_write_command(LCD_SELECT_SHL | 8); lcd_write_command_e(LCD_SET_COM0, 0); } } } void lcd_shutdown(void) { /* Set power save -> Power OFF (VDD - VSS) .. that's it */ if (lcd_initialized) lcd_write_command(LCD_SET_POWER_SAVE | 1); } void lcd_init_device(void) { and_l(~0x00000800, &GPIO_FUNCTION); /* CS3 line */ /* LCD Reset GPO34 */ or_l(0x00000004, &GPIO1_ENABLE); /* set as output */ or_l(0x00000004, &GPIO1_FUNCTION); /* switch to secondary function - GPIO */ and_l(~0x00000004, &GPIO1_OUT); /* RESET low */ sleep(1); /* delay at least 1000 ns */ or_l(0x00000004, &GPIO1_OUT); /* RESET high */ sleep(1); /* parameters setup taken from original firmware */ lcd_write_command(LCD_RESET); lcd_write_command_e(LCD_SET_DUTY_RATIO,0x80); /* 1/128 */ lcd_write_command(LCD_OSC_ON); lcd_write_command(LCD_SELECT_DCDC | 3); /* DC/DC 6xboost */ lcd_write_command(LCD_SELECT_RES | 7); /* Regulator resistor: 7.2 */ lcd_write_command(LCD_SET_BIAS | 6); /* 1/11 */ lcd_write_command(LCD_SET_PWM_FRC | 6); /* 3FRC + 12PWM */ 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, 0xc4); 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, 0x00); lcd_write_command(LCD_CONTROL_POWER | 7); /* All circuits ON */ lcd_write_command(LCD_DISPLAY_ON | 1); /* display on */ /* Ok we are ready */ lcd_initialized = true; lcd_set_flip(cached_flip); lcd_set_contrast(cached_contrast); lcd_set_invert_display(cached_invert); lcd_update(); } /* Update the display. This must be called after all other LCD functions that change the display. */ void lcd_update(void) ICODE_ATTR; void lcd_update(void) { int y; if(!lcd_initialized) return; for(y = 0;y < LCD_FBHEIGHT;y++) { lcd_write_command(LCD_SET_PAGE | y); lcd_write_command_e(LCD_SET_COLUMN, 0); lcd_write_data(lcd_framebuffer[y], LCD_WIDTH); } } /* Update a fraction of the display. */ void lcd_update_rect(int, int, int, int) ICODE_ATTR; void lcd_update_rect(int x, int y, int width, int height) { int ymax; if (!lcd_initialized) return; /* 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 rectange bitmap to hardware */ for (; y <= ymax; y++) { lcd_write_command(LCD_SET_PAGE | y ); lcd_write_command_e(LCD_SET_COLUMN | ((x >> 4) & 0xf), x & 0x0f); lcd_write_data (&lcd_framebuffer[y][x], width); } } void lcd_blit_grey_phase(unsigned char *values, unsigned char *phases, int x, int by, int width, int bheight, int stride) { (void)values; (void)phases; (void)x; (void)by; (void)width; (void)bheight; (void)stride; /* empty stub */ } void lcd_blit_mono(const unsigned char *data, int x, int by, int width, int bheight, int stride) { (void)data; (void)x; (void)by; (void)width; (void)bheight; (void)stride; /* empty stub */ }