/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * 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 "kernel.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) { void* (*fbaddr)(int x, int y) = FB_CURRENTVP_BUFFER->get_address_fn; 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(fbaddr(0,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; void* (*fbaddr)(int x, int y) = FB_CURRENTVP_BUFFER->get_address_fn; /* 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(fbaddr(x,y), 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); } } }