/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * Copyright (C) 2004 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 "cpu.h" #include "lcd.h" #include "kernel.h" #include "thread.h" #include #include #include "file.h" #include "debug.h" #include "system.h" #include "font.h" #include "bidi.h" #ifndef BOOTLOADER #define LCD_MUTEX_INIT() mutex_init(&lcd_mtx) #define LCD_MUTEX_LOCK() mutex_lock(&lcd_mtx) #define LCD_MUTEX_UNLOCK() mutex_unlock(&lcd_mtx) static struct mutex lcd_mtx; /* The update functions use DMA and yield */ unsigned long dma_addr IBSS_ATTR; unsigned int dma_len IBSS_ATTR; volatile int dma_count IBSS_ATTR; #else #define LCD_MUTEX_INIT() #define LCD_MUTEX_LOCK() #define LCD_MUTEX_UNLOCK() #endif /* def BOOTLOADER */ static bool display_on = false; /* Is the display turned on? */ static bool display_flipped = false; static int xoffset = 0; /* Needed for flip */ /* register defines */ #define R_START_OSC 0x00 #define R_DRV_OUTPUT_CONTROL 0x01 #define R_DRV_WAVEFORM_CONTROL 0x02 #define R_ENTRY_MODE 0x03 #define R_COMPARE_REG1 0x04 #define R_COMPARE_REG2 0x05 #define R_DISP_CONTROL1 0x07 #define R_DISP_CONTROL2 0x08 #define R_DISP_CONTROL3 0x09 #define R_FRAME_CYCLE_CONTROL 0x0b #define R_EXT_DISP_IF_CONTROL 0x0c #define R_POWER_CONTROL1 0x10 #define R_POWER_CONTROL2 0x11 #define R_POWER_CONTROL3 0x12 #define R_POWER_CONTROL4 0x13 #define R_RAM_ADDR_SET 0x21 #define R_WRITE_DATA_2_GRAM 0x22 #define R_GAMMA_FINE_ADJ_POS1 0x30 #define R_GAMMA_FINE_ADJ_POS2 0x31 #define R_GAMMA_FINE_ADJ_POS3 0x32 #define R_GAMMA_GRAD_ADJ_POS 0x33 #define R_GAMMA_FINE_ADJ_NEG1 0x34 #define R_GAMMA_FINE_ADJ_NEG2 0x35 #define R_GAMMA_FINE_ADJ_NEG3 0x36 #define R_GAMMA_GRAD_ADJ_NEG 0x37 #define R_GAMMA_AMP_ADJ_RES_POS 0x38 #define R_GAMMA_AMP_AVG_ADJ_RES_NEG 0x39 #define R_GATE_SCAN_POS 0x40 #define R_VERT_SCROLL_CONTROL 0x41 #define R_1ST_SCR_DRV_POS 0x42 #define R_2ND_SCR_DRV_POS 0x43 #define R_HORIZ_RAM_ADDR_POS 0x44 #define R_VERT_RAM_ADDR_POS 0x45 #define LCD_CMD (*(volatile unsigned short *)0xf0000000) #define LCD_DATA (*(volatile unsigned short *)0xf0000002) #define R_ENTRY_MODE_HORZ 0x7030 #define R_ENTRY_MODE_VERT 0x7038 /* called very frequently - inline! */ static inline void lcd_write_reg(int reg, int val) { LCD_CMD = reg; LCD_DATA = val; } /* called very frequently - inline! */ static inline void lcd_begin_write_gram(void) { LCD_CMD = R_WRITE_DATA_2_GRAM; } /*** hardware configuration ***/ void lcd_set_contrast(int val) { (void)val; } void lcd_set_invert_display(bool yesno) { (void)yesno; } static void flip_lcd(bool yesno) { if (yesno) { lcd_write_reg(R_DRV_OUTPUT_CONTROL, 0x031b); /* 224 lines, GS=SS=1 */ lcd_write_reg(R_GATE_SCAN_POS, 0x0002); /* 16 lines offset */ lcd_write_reg(R_1ST_SCR_DRV_POS, 0xdf04); /* 4..223 */ } else { lcd_write_reg(R_DRV_OUTPUT_CONTROL, 0x001b); /* 224 lines, GS=SS=0 */ lcd_write_reg(R_GATE_SCAN_POS, 0x0000); lcd_write_reg(R_1ST_SCR_DRV_POS, 0xdb00); /* 0..219 */ } } /* turn the display upside down (call lcd_update() afterwards) */ void lcd_set_flip(bool yesno) { display_flipped = yesno; xoffset = yesno ? 4 : 0; if (display_on) { LCD_MUTEX_LOCK(); flip_lcd(yesno); LCD_MUTEX_UNLOCK(); } } static void _display_on(void) { /** Sequence according to datasheet, p. 132 **/ lcd_write_reg(R_START_OSC, 0x0001); /* Start Oscilation */ sleep(1); /* zero everything*/ lcd_write_reg(R_POWER_CONTROL1, 0x0000); /* STB = 0, SLP = 0 */ lcd_write_reg(R_DISP_CONTROL1, 0x0000); /* GON = 0, DTE = 0, D1-0 = 00b */ lcd_write_reg(R_POWER_CONTROL3, 0x0000); /* PON = 0 */ lcd_write_reg(R_POWER_CONTROL4, 0x0000); /* VCOMG = 0 */ sleep(1); /* initialise power supply */ /* DC12-10 = 000b: Step-up1 = clock/8, * DC02-00 = 000b: Step-up2 = clock/16, * VC2-0 = 010b: VciOUT = 0.87 * VciLVL */ lcd_write_reg(R_POWER_CONTROL2, 0x0002); /* VRH3-0 = 1000b: Vreg1OUT = REGP * 1.90 */ lcd_write_reg(R_POWER_CONTROL3, 0x0008); /* VDV4-0 = 00110b: VcomA = Vreg1OUT * 0.76, * VCM4-0 = 10000b: VcomH = Vreg1OUT * 0.70*/ lcd_write_reg(R_POWER_CONTROL4, 0x0610); lcd_write_reg(R_POWER_CONTROL1, 0x0044); /* AP2-0 = 100b, DK = 1 */ lcd_write_reg(R_POWER_CONTROL3, 0x0018); /* PON = 1 */ sleep(4); /* Step-up circuit stabilising time */ /* start power supply */ lcd_write_reg(R_POWER_CONTROL1, 0x0540); /* BT2-0 = 101b, DK = 0 */ lcd_write_reg(R_POWER_CONTROL4, 0x2610); /* VCOMG = 1 */ /* other settings */ /* B/C = 1: n-line inversion form * EOR = 1: polarity inversion occurs by applying an EOR to odd/even * frame select signal and an n-line inversion signal. * FLD = 01b: 1 field interlaced scan, external display iface */ lcd_write_reg(R_DRV_WAVEFORM_CONTROL, 0x0700); /* Address counter updated in vertical direction; left to right; * vertical increment horizontal increment. * data format for 8bit transfer or spi = 65k (5,6,5) * Reverse order of RGB to BGR for 18bit data written to GRAM * Replace data on writing to GRAM */ lcd_write_reg(R_ENTRY_MODE, 0x7038); flip_lcd(display_flipped); lcd_write_reg(R_2ND_SCR_DRV_POS, 0x0000); lcd_write_reg(R_VERT_SCROLL_CONTROL, 0x0000); /* 19 clocks,no equalization */ lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0002); /* Transfer mode for RGB interface disabled * internal clock operation; * System interface/VSYNC interface */ lcd_write_reg(R_EXT_DISP_IF_CONTROL, 0x0003); /* Front porch lines: 8; Back porch lines: 8; */ lcd_write_reg(R_DISP_CONTROL2, 0x0808); /* Scan mode by the gate driver in the non-display area: disabled; * Cycle of scan by the gate driver - set to 31frames(518ms), * disabled by above setting */ lcd_write_reg(R_DISP_CONTROL3, 0x003f); lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0003); lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0707); lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0007); lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0705); lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0007); lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0000); lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0407); lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0507); lcd_write_reg(R_GAMMA_AMP_ADJ_RES_POS, 0x1d09); lcd_write_reg(R_GAMMA_AMP_AVG_ADJ_RES_NEG, 0x0303); display_on=true; /* must be done before calling lcd_update() */ lcd_update(); sleep(4); /* op-amp stabilising time */ /** Sequence according to datasheet, p. 130 **/ lcd_write_reg(R_POWER_CONTROL1, 0x4540); /* SAP2-0=100, BT2-0=101, AP2-0=100 */ lcd_write_reg(R_DISP_CONTROL1, 0x0005); /* GON=0, DTE=0, REV=1, D1-0=01 */ sleep(2); lcd_write_reg(R_DISP_CONTROL1, 0x0025); /* GON=1, DTE=0, REV=1, D1-0=01 */ lcd_write_reg(R_DISP_CONTROL1, 0x0027); /* GON=1, DTE=0, REV=1, D1-0=11 */ sleep(2); lcd_write_reg(R_DISP_CONTROL1, 0x0037); /* GON=1, DTE=1, REV=1, D1-0=11 */ } /* LCD init */ void lcd_init_device(void) { /* GPO46 is LCD RESET */ or_l(0x00004000, &GPIO1_OUT); or_l(0x00004000, &GPIO1_ENABLE); or_l(0x00004000, &GPIO1_FUNCTION); /* Reset LCD */ and_l(~0x00004000, &GPIO1_OUT); sleep(1); or_l(0x00004000, &GPIO1_OUT); sleep(1); #ifndef BOOTLOADER DAR3 = 0xf0000002; /* Configure DMA channel 3 */ DSR3 = 1; /* Clear all bits in the status register */ DIVR3 = 57; /* DMA3 is mapped into vector 57 in system.c */ ICR9 = (6 << 2); /* Enable DMA3 interrupt at level 6, priority 0 */ coldfire_imr_mod(0, 1 << 17); #endif LCD_MUTEX_INIT(); _display_on(); } void lcd_enable(bool on) { if (display_on != on) { LCD_MUTEX_LOCK(); if (on) { _display_on(); send_event(LCD_EVENT_ACTIVATION, NULL); } else { /** Off sequence according to datasheet, p. 130 **/ lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0002); /* EQ=0, 18 clks/line */ lcd_write_reg(R_DISP_CONTROL1, 0x0036); /* GON=1, DTE=1, REV=1, D1-0=10 */ sleep(2); lcd_write_reg(R_DISP_CONTROL1, 0x0026); /* GON=1, DTE=0, REV=1, D1-0=10 */ sleep(2); lcd_write_reg(R_DISP_CONTROL1, 0x0000); /* GON=0, DTE=0, D1-0=00 */ lcd_write_reg(R_POWER_CONTROL1, 0x0000); /* SAP2-0=000, AP2-0=000 */ lcd_write_reg(R_POWER_CONTROL3, 0x0000); /* PON=0 */ lcd_write_reg(R_POWER_CONTROL4, 0x0000); /* VCOMG=0 */ /* datasheet p. 131 */ lcd_write_reg(R_POWER_CONTROL1, 0x0001); /* STB=1: standby mode */ display_on=false; } LCD_MUTEX_UNLOCK(); } } bool lcd_active(void) { return display_on; } /*** update functions ***/ /* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. * y should have two lines of Y back to back, 2nd line first. * c should contain the Cb and Cr data for the two lines of Y back to back. * Needs EMAC set to saturated, signed integer mode. */ extern void lcd_write_yuv420_lines(const unsigned char *y, const unsigned char *c, int cwidth); /* Performance function to blit a YUV bitmap directly to the LCD * src_x, src_y, width and height should be even * x, y, width and height have to be within LCD bounds */ void lcd_blit_yuv(unsigned char * const src[3], int src_x, int src_y, int stride, int x, int y, int width, int height) { /* IRAM Y, Cb and Cb buffers. */ unsigned char y_ibuf[LCD_WIDTH*2]; unsigned char c_ibuf[LCD_WIDTH]; const unsigned char *ysrc, *usrc, *vsrc; const unsigned char *ysrc_max; if (!display_on) return; LCD_MUTEX_LOCK(); width &= ~1; /* stay on the safe side */ height &= ~1; lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_HORZ); /* Set start position and window */ lcd_write_reg(R_VERT_RAM_ADDR_POS, ((xoffset + 219) << 8) | xoffset); ysrc = src[0] + src_y * stride + src_x; usrc = src[1] + (src_y * stride >> 2) + (src_x >> 1); vsrc = src[2] + (src_y * stride >> 2) + (src_x >> 1); ysrc_max = ysrc + height * stride; coldfire_set_macsr(EMAC_SATURATE); do { lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((y + 1) << 8) | y); lcd_write_reg(R_RAM_ADDR_SET, ((x+xoffset) << 8) | y); lcd_begin_write_gram(); memcpy(y_ibuf + width, ysrc, width); memcpy(y_ibuf, ysrc + stride, width); memcpy(c_ibuf, usrc, width >> 1); memcpy(c_ibuf + (width >> 1), vsrc, width >> 1); lcd_write_yuv420_lines(y_ibuf, c_ibuf, width >> 1); y += 2; ysrc += 2 * stride; usrc += stride >> 1; vsrc += stride >> 1; } while (ysrc < ysrc_max) ;; LCD_MUTEX_UNLOCK(); } #ifndef BOOTLOADER /* LCD DMA ISR */ void DMA3(void) __attribute__ ((interrupt_handler, section(".icode"))); void DMA3(void) { DSR3 = 1; /* Clear all bits in the status register */ if (--dma_count > 0) { dma_addr += LCD_WIDTH*sizeof(fb_data); SAR3 = dma_addr; BCR3 = dma_len; DCR3 = DMA_INT | DMA_AA | DMA_BWC(1) | DMA_SINC | DMA_SSIZE(DMA_SIZE_LINE) | DMA_DSIZE(DMA_SIZE_WORD) | DMA_START; } } #endif /* Update the display. This must be called after all other LCD functions that change the display. */ void lcd_update(void) { if (display_on) { LCD_MUTEX_LOCK(); lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VERT); /* set start position window */ lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 175 << 8); lcd_write_reg(R_VERT_RAM_ADDR_POS,((xoffset+219)<<8) | xoffset); lcd_write_reg(R_RAM_ADDR_SET, xoffset << 8); lcd_begin_write_gram(); #ifndef BOOTLOADER dma_count = 1; SAR3 = (unsigned long)FBADDR(0, 0); BCR3 = LCD_WIDTH*LCD_HEIGHT*sizeof(fb_data); DCR3 = DMA_INT | DMA_AA | DMA_BWC(1) | DMA_SINC | DMA_SSIZE(DMA_SIZE_LINE) | DMA_DSIZE(DMA_SIZE_WORD) | DMA_START; while (dma_count > 0) yield(); #else DAR3 = 0xf0000002; DSR3 = 1; /* Clear all bits in the status register */ SAR3 = (unsigned long)FBADDR(0, 0); BCR3 = LCD_WIDTH*LCD_HEIGHT*sizeof(fb_data); DCR3 = DMA_AA | DMA_BWC(1) | DMA_SINC | DMA_SSIZE(DMA_SIZE_LINE) | DMA_DSIZE(DMA_SIZE_WORD) | DMA_START; while (!(DSR3 & 1)) ;; DSR3 = 1; /* Clear all bits in the status register */ #endif LCD_MUTEX_UNLOCK(); } } /* Update a fraction of the display. */ void lcd_update_rect(int x, int y, int width, int height) { #ifdef BOOTLOADER (void)x; (void)y; (void)width; (void)height; lcd_update(); /* in bootloader -- all or nothing */ #else if (display_on) { if (x + width > LCD_WIDTH) width = LCD_WIDTH - x; if (y + height > LCD_HEIGHT) height = LCD_HEIGHT - y; if (width <= 0 || height <= 0) /* nothing to do */ return; LCD_MUTEX_LOCK(); lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VERT); /* set update window */ lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 175 << 8); lcd_write_reg(R_VERT_RAM_ADDR_POS,((x+xoffset+width-1) << 8) | (x+xoffset)); lcd_write_reg(R_RAM_ADDR_SET, ((x+xoffset) << 8) | y); lcd_begin_write_gram(); if (width == LCD_WIDTH) { dma_count = 1; SAR3 = (unsigned long)FBADDR(0, y); BCR3 = (LCD_WIDTH*sizeof(fb_data)) * height; } else { dma_count = height; SAR3 = dma_addr = (unsigned long)FBADDR(x, y); BCR3 = dma_len = width * sizeof(fb_data); } DCR3 = DMA_INT | DMA_AA | DMA_BWC(1) | DMA_SINC | DMA_SSIZE(DMA_SIZE_LINE) | DMA_DSIZE(DMA_SIZE_WORD) | DMA_START; while (dma_count > 0) yield(); LCD_MUTEX_UNLOCK(); } #endif /* ndef BOOTLOADER */ }