/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2006 by Linus Nielsen Feltzing * * 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 "scroll_engine.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(~0x00000020, &GPIO1_OUT) #define CS_HI or_l(0x00000020, &GPIO1_OUT) #define CLK_LO and_l(~0x00004000, &GPIO_OUT) #define CLK_HI or_l(0x00004000, &GPIO_OUT) #define DATA_LO and_l(~0x00002000, &GPIO_OUT) #define DATA_HI or_l(0x00002000, &GPIO_OUT) #define RS_LO and_l(~0x00008000, &GPIO_OUT) #define RS_HI or_l(0x00008000, &GPIO_OUT) /* cached settings values */ static bool cached_invert = false; static bool cached_flip = false; static int cached_contrast = DEFAULT_REMOTE_CONTRAST_SETTING; bool remote_initialized = false; int lcd_remote_default_contrast(void) { return DEFAULT_REMOTE_CONTRAST_SETTING; } void lcd_remote_powersave(bool on) { if(remote_initialized) { if (on) lcd_remote_write_command(LCD_SET_POWER_SAVE | 1); else lcd_remote_write_command(LCD_SET_POWER_SAVE | 1); } } void lcd_remote_set_contrast(int val) { if (val < 0) val = 0; else if (val > 63) val = 63; cached_contrast = val; if(remote_initialized) lcd_remote_write_command_ex(LCD_SET_VOLUME, val); } bool remote_detect(void) { return (GPIO_READ & 0x01000000)?false:true; } void lcd_remote_on(void) { CS_HI; CLK_HI; sleep(HZ/100); lcd_remote_write_command(LCD_SET_DUTY_RATIO); lcd_remote_write_command(0x70); /* 1/128 */ lcd_remote_write_command(LCD_OSC_ON); lcd_remote_write_command(LCD_SELECT_DCDC | 2); /* DC/DC 5xboost */ lcd_remote_write_command(LCD_SELECT_RES | 7); /* Regulator resistor: 7.2 */ lcd_remote_write_command(LCD_SET_BIAS | 6); /* 1/11 */ lcd_remote_write_command(LCD_CONTROL_POWER | 7); /* All circuits ON */ sleep(3*HZ/100); lcd_remote_write_command_ex(LCD_SET_GRAY | 0, 0x00); lcd_remote_write_command_ex(LCD_SET_GRAY | 1, 0x00); lcd_remote_write_command_ex(LCD_SET_GRAY | 2, 0x0c); lcd_remote_write_command_ex(LCD_SET_GRAY | 3, 0x00); lcd_remote_write_command_ex(LCD_SET_GRAY | 4, 0xcc); lcd_remote_write_command_ex(LCD_SET_GRAY | 5, 0x00); lcd_remote_write_command_ex(LCD_SET_GRAY | 6, 0xcc); lcd_remote_write_command_ex(LCD_SET_GRAY | 7, 0x0c); lcd_remote_write_command(LCD_SET_PWM_FRC | 6); /* 3FRC + 12PWM */ lcd_remote_write_command(LCD_DISPLAY_ON | 1); /* display on */ 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; CS_HI; RS_HI; } void lcd_remote_poweroff(void) { /* Set power save -> Power OFF (VDD - VSS) .. that's it */ if (remote_initialized) lcd_remote_write_command(LCD_SET_POWER_SAVE | 1); } #ifndef BOOTLOADER /* Monitor remote hotswap */ static void remote_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_remote_init_device(void) { or_l(0x0000e000, &GPIO_OUT); or_l(0x0000e000, &GPIO_ENABLE); or_l(0x0000e000, &GPIO_FUNCTION); or_l(0x00000020, &GPIO1_OUT); or_l(0x00000020, &GPIO1_ENABLE); or_l(0x00000020, &GPIO1_FUNCTION); and_l(~0x01000000, &GPIO_OUT); and_l(~0x01000000, &GPIO_ENABLE); or_l(0x01000000, &GPIO_FUNCTION); 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) { for(y = 0;y < LCD_REMOTE_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_remote_write_command(LCD_SET_PAGE | (y > 5 ? y + 2 : y)); lcd_remote_write_command_ex(LCD_SET_COLUMN | 0, 0); 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) { if(remote_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_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; /* Copy specified rectangle bitmap to hardware COM48-COM63 are not connected, so we need to skip those */ for (; y <= ymax; y++) { lcd_remote_write_command(LCD_SET_PAGE | ((y > 5 ? y + 2 : y) & 0xf)); lcd_remote_write_command_ex(LCD_SET_COLUMN | ((x >> 4) & 0xf), x & 0xf); lcd_remote_write_data(&lcd_remote_framebuffer[y][x], width); } } } void lcd_remote_set_invert_display(bool yesno) { cached_invert = yesno; if(remote_initialized) lcd_remote_write_command(LCD_REVERSE | yesno); } void lcd_remote_set_flip(bool yesno) { cached_flip = yesno; if(remote_initialized) { if(yesno) { lcd_remote_write_command(LCD_SELECT_ADC | 0); lcd_remote_write_command(LCD_SELECT_SHL | 0); lcd_remote_write_command_ex(LCD_SET_COM0, 16); } else { lcd_remote_write_command(LCD_SELECT_ADC | 1); lcd_remote_write_command(LCD_SELECT_SHL | 8); lcd_remote_write_command_ex(LCD_SET_COM0, 0); } } }