WebSVN – freemyipod – Diff – /emcore/trunk/target/ipodnano4g/lcd.c

 //
 //
 //    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"
 static struct dma_lli lcd_lli[(LCD_WIDTH * LCD_HEIGHT - 1) / 0xfff]
     IDATA_ATTR __attribute__((aligned(16)));
 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;
 static bool lcd_in_irq IDATA_ATTR;
 void lcd_init()
 {
     mutex_init(&lcd_mutex);
     wakeup_init(&lcd_wakeup);
     lcd_in_irq = false;
     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()
 {
 }
 bool displaylcd_busy() ICODE_ATTR;
 bool displaylcd_busy()
 {
     return lcd_dma_busy;
 }
 bool displaylcd_safe()
 {
     lcd_in_irq = true;
     if (!lcd_dma_busy) return true;
     return !(DMAC0C4CONFIG & 1);
 }
 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) ICODE_ATTR;
 void displaylcd_setup(unsigned int startx, unsigned int endx,
                       unsigned int starty, unsigned int endy)
 {
     if (!lcd_in_irq)
     {
         mutex_lock(&lcd_mutex, TIMEOUT_BLOCK);
         displaylcd_sync();
     }
     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 = (void*)(((uint32_t)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);
     displaylcd_dma(data, pixels, false);
     if (!lcd_in_irq) mutex_unlock(&lcd_mutex);
 }
 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);
     lcd_color = color;
     displaylcd_dma(&lcd_color, pixels, true);
     if (!lcd_in_irq) 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)
 {
 //TODO: This is ARMv5E optimized assembly, should be converted to ARMv6
     __asm__ volatile("    muls r12, r2, r3             \n");
     __asm__ volatile("    bxeq lr                      \n");
     __asm__ volatile("    stmfd sp!, {r2-r11,lr}       \n");
     __asm__ volatile("    mov r12, r2                  \n");
     __asm__ volatile("    add r8, r2, r2,lsl#1         \n");
     __asm__ volatile("    add r3, r1, r3               \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("    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, #3                \n");
     __asm__ volatile("    moveq r10, #0                \n");
     __asm__ volatile("    ldr r9, =0x38300040          \n");
     __asm__ volatile("displaylcd_dither_y:             \n");
     __asm__ volatile("    ldr lr, [sp]                 \n");
     __asm__ volatile("    mov r4, #0                   \n");
     __asm__ volatile("    mov r5, #0                   \n");
     __asm__ volatile("    mov r6, #0                   \n");
     __asm__ volatile("    mov r7, r8                   \n");
     __asm__ volatile("displaylcd_dither_x:             \n");
     __asm__ volatile("    mov r2, #0                   \n");
     __asm__ volatile("    ldrb r1, [r3], #1            \n");
     __asm__ volatile("    ldrsb r0, [r7]               \n");
     __asm__ volatile("    add r1, r1, r4               \n");
     __asm__ volatile("    add r1, r1, r0               \n");
     __asm__ volatile("    cmp r1, #0xff                \n");
     __asm__ volatile("    mvnhi r1, r1,asr#31          \n");
     __asm__ volatile("    andhi r1, r1, #0xff          \n");
     __asm__ volatile("    mov r0, r1,lsr#3             \n");
     __asm__ volatile("    orr r2, r0,lsl#11            \n");
     __asm__ volatile("    sub r1, r1, r0,lsl#3         \n");
     __asm__ volatile("    sub r1, r1, r0,lsr#2         \n");
     __asm__ volatile("    mov r4, r4,lsr#1             \n");
     __asm__ volatile("    add r4, r4, r1,lsr#2         \n");
     __asm__ volatile("    strb r4, [r7], #1            \n");
     __asm__ volatile("    mov r4, r1,asr#1             \n");
     __asm__ volatile("    ldrb r1, [r3], #1            \n");
     __asm__ volatile("    ldrsb r0, [r7]               \n");
     __asm__ volatile("    add r1, r1, r5               \n");
     __asm__ volatile("    add r1, r1, r0               \n");
     __asm__ volatile("    cmp r1, #0xff                \n");
     __asm__ volatile("    mvnhi r1, r1,asr#31          \n");
     __asm__ volatile("    andhi r1, r1, #0xff          \n");
     __asm__ volatile("    mov r0, r1,lsr#2             \n");
     __asm__ volatile("    orr r2, r0,lsl#5             \n");
     __asm__ volatile("    sub r1, r1, r0,lsl#2         \n");
     __asm__ volatile("    sub r1, r1, r0,lsr#4         \n");
     __asm__ volatile("    mov r5, r5,lsr#1             \n");
     __asm__ volatile("    add r5, r5, r1,lsr#2         \n");
     __asm__ volatile("    strb r5, [r7], #1            \n");
     __asm__ volatile("    mov r5, r1,asr#1             \n");
     __asm__ volatile("    ldrb r1, [r3], #1            \n");
     __asm__ volatile("    ldrsb r0, [r7]               \n");
     __asm__ volatile("    add r1, r1, r6               \n");
     __asm__ volatile("    add r1, r1, r0               \n");
     __asm__ volatile("    cmp r1, #0xff                \n");
     __asm__ volatile("    mvnhi r1, r1,asr#31          \n");
     __asm__ volatile("    andhi r1, r1, #0xff          \n");
     __asm__ volatile("    mov r0, r1,lsr#3             \n");
     __asm__ volatile("    orr r2, r0                   \n");
     __asm__ volatile("    sub r1, r1, r0,lsl#3         \n");
     __asm__ volatile("    sub r1, r1, r0,lsr#2         \n");
     __asm__ volatile("    mov r6, r6,lsr#1             \n");
     __asm__ volatile("    add r6, r6, r1,lsr#2         \n");
     __asm__ volatile("    strb r6, [r7], #1            \n");
     __asm__ volatile("displaylcd_dither_waitlcd:       \n");
     __asm__ volatile("    ldr r0, [r9,#-0x24]          \n");
     __asm__ volatile("    mov r6, r1,asr#1             \n");
     __asm__ volatile("    tst r0, #0x10                \n");
     __asm__ volatile("    bne displaylcd_dither_waitlcd\n");
     __asm__ volatile("    str r2, [r9]                 \n");
     __asm__ volatile("    sub r3, r3, r10              \n");
     __asm__ volatile("    subs lr, lr, #1              \n");
     __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_in_irq = true;
     lcd_dma_busy = false;
     clockgate_dma(0, 4, false);
     lcdconsole_callback();
     wakeup_signal(&lcd_wakeup);
     lcd_in_irq = false;
 }
 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"
     );
 }

Subversion Repositories freemyipod

(root)/emcore/trunk/target/ipodnano4g/lcd.c @ 702 – Rev 648 → 650