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////// Copyright 2010 TheSeven////// This file is part of emCORE.//// emCORE 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.//// emCORE is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.// See the GNU General Public License for more details.//// You should have received a copy of the GNU General Public License along// with emCORE. If not, see <http://www.gnu.org/licenses/>.////#include "global.h"#include "thread.h"#include "s5l8720.h"#include "util.h"#include "clockgates-target.h"#include "lcd.h"static struct dma_lli lcd_lli[(LCD_WIDTH * LCD_HEIGHT - 1) / 0xfff]IDATA_ATTR CACHEALIGN_ATTR;static uint16_t lcd_color IDATA_ATTR;static struct mutex lcd_mutex IDATA_ATTR;static struct wakeup lcd_wakeup IDATA_ATTR;static bool lcd_dma_busy IDATA_ATTR;void lcd_init(){mutex_init(&lcd_mutex);wakeup_init(&lcd_wakeup);lcd_dma_busy = true;clockgate_dma(0, 4, true);if (!(DMAC0C4CONFIG & 1)){lcd_dma_busy = false;clockgate_dma(0, 4, false);}}int lcd_get_width(){return LCD_WIDTH;}int lcd_get_height(){return LCD_HEIGHT;}int lcd_get_bytes_per_pixel(){return LCD_BYTESPERPIXEL;}int lcd_get_format(){return LCD_FORMAT;}static void lcd_send_cmd(uint16_t cmd) ICODE_ATTR __attribute__((noinline));static void lcd_send_cmd(uint16_t cmd){while (LCDSTATUS & 0x10);LCDWCMD = cmd;}static void lcd_send_data(uint16_t data) ICODE_ATTR __attribute__((noinline));static void lcd_send_data(uint16_t data){while (LCDSTATUS & 0x10);LCDWDATA = (data & 0xff) | ((data & 0x7f00) << 1);}void lcd_shutdown(){mutex_lock(&lcd_mutex, TIMEOUT_BLOCK);displaylcd_sync();while (!(LCDSTATUS & 0x2));LCDCON = 0x81100db8;}bool displaylcd_busy() ICODE_ATTR;bool displaylcd_busy(){return lcd_dma_busy;}void displaylcd_sync() ICODE_ATTR;void displaylcd_sync(){mutex_lock(&lcd_mutex, TIMEOUT_BLOCK);while (displaylcd_busy()) wakeup_wait(&lcd_wakeup, TIMEOUT_BLOCK);mutex_unlock(&lcd_mutex);}void displaylcd_setup(unsigned int startx, unsigned int endx,unsigned int starty, unsigned int endy, bool safe) ICODE_ATTR;void displaylcd_setup(unsigned int startx, unsigned int endx,unsigned int starty, unsigned int endy, bool safe){if (!safe){mutex_lock(&lcd_mutex, TIMEOUT_BLOCK);displaylcd_sync();}else while (DMAC0C4CONFIG & 1);while (!(LCDSTATUS & 0x2));LCDCON = 0x81100db8;lcd_send_cmd(0x2a);lcd_send_data(startx);lcd_send_data(endx);lcd_send_cmd(0x2b);lcd_send_data(starty);lcd_send_data(endy);lcd_send_cmd(0x2c);}static void displaylcd_dma(void* data, int pixels, bool solid) ICODE_ATTR;static void displaylcd_dma(void* data, int pixels, bool solid){int i;lcd_dma_busy = true;clockgate_dma(0, 4, true);for (i = -1; i < (int)ARRAYLEN(lcd_lli) && pixels > 0; i++, pixels -= 0xfff){bool last = i + 1 >= ARRAYLEN(lcd_lli) || pixels <= 0xfff;struct dma_lli* lli = i < 0 ? (struct dma_lli*)((int)&DMAC0C4LLI) : &lcd_lli[i];lli->srcaddr = data;lli->dstaddr = (void*)((int)&LCDWDATA);lli->nextlli = last ? NULL : &lcd_lli[i + 1];lli->control = 0x70240000 | (last ? pixels : 0xfff)| (last ? 0x80000000 : 0) | (solid ? 0 : 0x4000000);if (!solid) data += 0x1ffe;}clean_dcache();DMAC0C4CONFIG = 0x88c1;}void displaylcd_native(unsigned int startx, unsigned int endx,unsigned int starty, unsigned int endy, void* data){int pixels = (endx - startx + 1) * (endy - starty + 1);if (pixels <= 0) return;displaylcd_setup(startx, endx, starty, endy, false);displaylcd_dma(data, pixels, false);mutex_unlock(&lcd_mutex);}void displaylcd_safe_native(unsigned int startx, unsigned int endx,unsigned int starty, unsigned int endy, void* data){int pixels = (endx - startx + 1) * (endy - starty + 1);if (pixels <= 0) return;displaylcd_setup(startx, endx, starty, endy, true);displaylcd_dma(data, pixels, false);}void filllcd_native(unsigned int startx, unsigned int endx,unsigned int starty, unsigned int endy, int color){int pixels = (endx - startx + 1) * (endy - starty + 1);if (pixels <= 0) return;displaylcd_setup(startx, endx, starty, endy, false);lcd_color = color;displaylcd_dma(&lcd_color, pixels, true);mutex_unlock(&lcd_mutex);}void displaylcd_dither(unsigned int x, unsigned int y, unsigned int width,unsigned int height, void* data, unsigned int datax,unsigned int datay, unsigned int stride, bool solid)ICODE_ATTR __attribute__((naked,noinline));void displaylcd_dither(unsigned int x, unsigned int y, unsigned int width,unsigned int height, void* data, unsigned int datax,unsigned int datay, unsigned int stride, bool solid){__asm__ volatile(" muls r12, r2, r3 \n");__asm__ volatile(" bxeq lr \n");__asm__ volatile(" stmfd sp!, {r1-r11,lr} \n");__asm__ volatile(" mov r12, #0 \n");__asm__ volatile(" str r12, [sp] \n");__asm__ volatile(" mov r12, r2 \n");__asm__ volatile(" mov r8, r2,lsl#2 \n");__asm__ volatile(" add r3, r1, r3 \n");__asm__ volatile(" add r8, r8, #4 \n");__asm__ volatile(" sub r3, r3, #1 \n");__asm__ volatile(" mov r2, r1 \n");__asm__ volatile(" add r1, r0, r12 \n");__asm__ volatile(" sub r1, r1, #1 \n");__asm__ volatile(" bl displaylcd_setup \n");__asm__ volatile(" add sp, sp, #4 \n");__asm__ volatile(" mov r0, r8 \n");__asm__ volatile(" bl malloc \n");__asm__ volatile(" cmp r0, #0 \n");__asm__ volatile(" beq displaylcd_dither_unlock \n");__asm__ volatile(" mov r2, r8 \n");__asm__ volatile(" mov r1, #0 \n");__asm__ volatile(" mov r8, r0 \n");__asm__ volatile(" bl memset \n");__asm__ volatile(" ldr r0, [sp,#0x30] \n");__asm__ volatile(" ldr r1, [sp,#0x34] \n");__asm__ volatile(" ldr r11, [sp,#0x38] \n");__asm__ volatile(" ldr r3, [sp,#0x2c] \n");__asm__ volatile(" mla r0, r1, r11, r0 \n");__asm__ volatile(" ldr r12, [sp,#0x04] \n");__asm__ volatile(" ldr r2, [sp,#0x3c] \n");__asm__ volatile(" add r3, r3, r0,lsl#1 \n");__asm__ volatile(" cmp r2, #0 \n");__asm__ volatile(" ldreq r1, [sp] \n");__asm__ volatile(" add r3, r3, r0 \n");__asm__ volatile(" subeq r11, r11, r1 \n");__asm__ volatile(" add r11, r11, r11,lsl#1 \n");__asm__ volatile(" movne r10, #0 \n");__asm__ volatile(" moveq r10, #3 \n");__asm__ volatile(" ldr r9, =0x38300040 \n");__asm__ volatile("displaylcd_dither_wait : \n");__asm__ volatile(" ldr r4, [r9,#-0x24] \n");__asm__ volatile(" tst r4, #2 \n");__asm__ volatile(" beq displaylcd_dither_wait \n");__asm__ volatile(" ldr r4, =0x81104eb8 \n");__asm__ volatile(" str r4, [r9,#-0x40] \n");__asm__ volatile(" ldr r6, =0x30303 \n");__asm__ volatile(" ldr r4, =0x808080 \n");__asm__ volatile("displaylcd_dither_y: \n");__asm__ volatile(" ldr lr, [sp] \n");__asm__ volatile(" mov r5, #0 \n");__asm__ volatile(" mov r7, r8 \n");__asm__ volatile("displaylcd_dither_x: \n"); // the lcd can accept one pixel every 25 clocks__asm__ volatile(" ldr r0, [r3] \n"); // 1 cycle, 2 mem, r0 latency 4, r3 early__asm__ volatile(" add r3, r3, r10 \n"); // 1 cycle__asm__ volatile(" ldr r1, [r7,#4] \n"); // 1 cycle, 1 mem, r1 latency 3, r7 early__asm__ volatile(" subs lr, lr, #1 \n"); // 1 cycle__asm__ volatile(" ssub8 r0, r0, r4 \n"); // 1 cycle__asm__ volatile(" sadd8 r1, r1, r5 \n"); // 1 cycle__asm__ volatile(" qadd8 r0, r0, r1 \n"); // 1 cycle, r0 latency 2// bubble (due to r0 latency)__asm__ volatile(" sadd8 r0, r0, r4 \n"); // 1 cycle__asm__ volatile(" str r0, [r9] \n"); // 1 cycle, 1 mem, r9 early__asm__ volatile(" bic r2, r0, r6 \n"); // 1 cycle__asm__ volatile(" and r1, r6, r0,lsr#6 \n"); // 1 cycle, r0 early__asm__ volatile(" orr r2, r2, r1 \n"); // 1 cycle__asm__ volatile(" mov r1, r5 \n"); // 1 cycle__asm__ volatile(" shsub8 r5, r0, r2 \n"); // 1 cycle__asm__ volatile(" shadd8 r1, r1, r5 \n"); // 1 cycle__asm__ volatile(" str r1, [r7], #4 \n"); // 1 cycle, 1 mem, r7 early__asm__ volatile(" nop \n"); // 2 cycles__asm__ volatile(" nop \n"); // 2 cycles__asm__ volatile(" nop \n"); // 2 cycles__asm__ volatile(" nop \n"); // 2 cycles__asm__ volatile(" bne displaylcd_dither_x \n");__asm__ volatile(" add r3, r3, r11 \n");__asm__ volatile(" subs r12, r12, #1 \n");__asm__ volatile(" bne displaylcd_dither_y \n");__asm__ volatile("displaylcd_dither_free: \n");__asm__ volatile(" mov r0, r8 \n");__asm__ volatile(" bl free \n");__asm__ volatile("displaylcd_dither_unlock: \n");__asm__ volatile(" ldr r0, =lcd_mutex \n");__asm__ volatile(" bl mutex_unlock \n");__asm__ volatile(" ldmfd sp!, {r2-r11,pc} \n");}void displaylcd(unsigned int x, unsigned int y, unsigned int width, unsigned int height,void* data, unsigned int datax, unsigned int datay, unsigned int stride){displaylcd_dither(x, y, width, height, data, datax, datay, stride, false);}void filllcd(unsigned int x, unsigned int y, unsigned int width, unsigned int height, int color){if (width * height <= 0) return;mutex_lock(&lcd_mutex, TIMEOUT_BLOCK);displaylcd_sync();lcd_color = color;displaylcd_dither(x, y, width, height, &lcd_color, 0, 0, 0, true);mutex_unlock(&lcd_mutex);}void INT_DMAC0C4(){DMAC0INTTCCLR = 0x10;lcd_dma_busy = false;clockgate_dma(0, 4, false);lcdconsole_callback();wakeup_signal(&lcd_wakeup);}int lcd_translate_color(uint8_t alpha, uint8_t red, uint8_t green, uint8_t blue)ICODE_ATTR __attribute__((naked, noinline));int lcd_translate_color(uint8_t alpha, uint8_t red, uint8_t green, uint8_t blue){asm volatile("cmp r0, #0xff \n\t""moveq r0, #-1 \n\t""moveq pc, lr \n\t""cmp r0, #0 \n\t""movne r0, #0xff000000 \n\t""orrne r0, r0, #0xff0000 \n\t""mov r2, r2,lsr#2 \n\t""orr r0, r0, r3,lsr#3 \n\t""mov r1, r1,lsr#3 \n\t""orr r0, r0, r2,lsl#5 \n\t""orr r0, r0, r1,lsl#11 \n\t""mov pc, lr \n\t");}