bootloader/rk27xx.c

   1 #include "config.h"
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include "inttypes.h"
   6 #include "string.h"
   7 #include "cpu.h"
   8 #include "system.h"
   9 #include "lcd.h"
  10 #include "kernel.h"
  11 #include "thread.h"
  12 #include "backlight.h"
  13 #include "backlight-target.h"
  14 #include "font.h"
  15 #include "common.h"
  16 #include "version.h"
  17
  18 // 441 Hz samples table, 44100 Hz and 441 Hz -> 100 samples
  19 const int16_t samples[] = {
  20          0,   2057,   4106,   6139,   8148,  10125,  12062,  13951,  15785,  17557,
  21      19259,  20886,  22430,  23886,  25247,  26509,  27666,  28713,  29648,  30465,
  22      31163,  31737,  32186,  32508,  32702,  32767,  32702,  32508,  32186,  31737,
  23      31163,  30465,  29648,  28713,  27666,  26509,  25247,  23886,  22430,  20886,
  24      19259,  17557,  15785,  13951,  12062,  10125,   8148,   6139,   4106,   2057,
  25          0,  -2057,  -4106,  -6139,  -8148, -10125, -12062, -13951, -15785, -17557,
  26     -19259, -20886, -22430, -23886, -25247, -26509, -27666, -28713, -29648, -30465,
  27     -31163, -31737, -32186, -32508, -32702, -32767, -32702, -32508, -32186, -31737,
  28     -31163, -30465, -29648, -28713, -27666, -26509, -25247, -23886, -22430, -20886,
  29     -19259, -17557, -15785, -13951, -12062, -10125,  -8148,  -6139,  -4106,  -2057 };
  30
  31 extern void show_logo( void );
  32
  33 void INT_HDMA(void)
  34 {
  35 #if 0
  36 //    static uint32_t i;
  37 //    printf("hdma int: %d", i++);
  38
  39     HDMA_ISRC0 = (uint32_t)&samples;
  40     HDMA_IDST0 = (uint32_t)&I2S_TXR;
  41     HDMA_ICNT0 = (sizeof(samples)/4) - 1;
  42     HDMA_CON0 = (1<<22)|  // slice mode
  43                 (1<<21)|  // channel enable
  44                 (1<<18)|  // interrupt mode
  45                 (5<<13)|  // transfer mode inc8
  46                 (6<<9) |  // hdreq from i2s tx
  47                 (0<<7) |  // source address increment
  48                 (1<<5) |  // destination address fixed
  49                 (2<<3) |  // data size word
  50                 (1<<0);   // enable hardware triggered dma
  51
  52     HDMA_ISR = (1<<13) | // mask ch1 page overflow
  53                (1<<11) | // mask ch1 page count down
  54                (1<<9);   // mask ch1 interrupts
  55 #endif
  56 return;
  57 }
  58
  59 static int codec_write(uint8_t reg, uint8_t data)
  60 {
  61     uint8_t tmp = data;
  62     return i2c_write(0x27<<1, reg<<1, 1, &tmp);
  63 }
  64
  65 void main(void)
  66 {
  67     int i;
  68
  69     _backlight_init();
  70
  71     system_init();
  72     kernel_init();
  73     enable_irq();
  74
  75     lcd_init_device();
  76     _backlight_on();
  77     font_init();
  78     lcd_setfont(FONT_SYSFIXED);
  79
  80     show_logo();
  81     sleep(HZ*2);
  82
  83 printf("show logo passed");
  84     // I2S init
  85     SCU_CLKCFG &= ~((1<<17) | (1<<16)); // enable i2s, i2c pclk
  86 //SCU_CLKCFG |= ((1<<17) | (1<<16));
  87     I2S_OPR = (1<<17) |    // reset Tx
  88               (1<<16) |    // reset Rx
  89               (1<<6)  |    // disable HDMA Req1
  90               (1<<5);      // disable HDMA Req2
  91
  92     I2S_TXCTL = (1<<16) |  // LRCK/SCLK = 64
  93                 (4<<8)  |  // MCLK/SCK = 4
  94                 (1<<4)  |  // 16bit samples
  95                 (0<<3)  |  // stereo mode
  96                 (0<<1);    // I2S
  97
  98     I2S_RXCTL = (1<<16) |  // LRCK/SCLK = 64
  99                 (4<<8)  |  // MCLK/SCK = 4
 100                 (1<<4)  |  // 16bit samples
 101                 (0<<3)  |  // stereo mode
 102                 (0<<1);    // I2S
 103
 104     I2S_FIFOSTS = (1<<18) |  // Tx int trigger half full
 105                   (1<<16);   // Rx int trigger half full
 106
 107     // I2S start
 108     I2S_OPR = (1<<17) | (1<<16);
 109     sleep(HZ/100);
 110
 111     I2S_OPR = (0<<6) | // req channel 1 enable
 112               (1<<5) | // req channel 2 disable
 113               (0<<4) | // HDMA req channel 1 Tx
 114               (0<<2) | // normal I2S operation (no loopback)
 115               (1<<1);  // Tx start
 116
 117 printf("I2S config passed");
 118
 119     HDMA_ISRC0 = (uint32_t)&samples;
 120     HDMA_IDST0 = (uint32_t)&I2S_TXR;
 121     HDMA_ICNT0 = (sizeof(samples)/4) - 1;
 122     HDMA_ISCNT0 = 7;
 123     HDMA_IPNCNTD0 = 1;
 124     HDMA_CON0 = (1<<22)|  // slice mode
 125                 (1<<21)|  // channel enable
 126                 (1<<18)|  // interrupt mode
 127                 (5<<13)|  // transfer mode inc8
 128                 (6<<9) |  // hdreq from i2s tx
 129                 (0<<7) |  // source address increment
 130                 (1<<5) |  // destination address fixed
 131                 (2<<3) |  // data size word
 132                 (1<<0);   // enable hardware triggered dma
 133
 134     HDMA_ISR = (1<<13) | // mask ch1 page overflow
 135                (1<<11) | // mask ch1 page count down
 136                (1<<9);   // mask ch1 interrupts
 137
 138     INTC_IMR |= (1<<12);
 139     INTC_IECR |= (1<<12);
 140
 141 printf("HDMA config passed");
 142
 143     i2c_init();
 144
 145 printf("I2C config passed");
 146
 147     // codec init
 148     codec_write(0x00, (1<<3)|(1<<2)|(1<<1)|(1<<0)); // AICR
 149     codec_write(0x01, (1<<7)|(1<<5)|(1<<3));        // CR1
 150     codec_write(0x02, (1<<2));                      // CR2
 151     codec_write(0x03, 0);                           // CCR1
 152     codec_write(0x04, (2<<4)|(2<<0));               // CCR2
 153     codec_write(0x07, (3<<5)|(3<<0));               // CCR
 154
 155
 156     codec_write(0x0f, 0x1f|(2<<6));                 // CGR6
 157     codec_write(0x14, (1<<1));                      // TR1
 158     codec_write(0x05, (1<<6)|(1<<5)|(1<<4)|(1<<3)|(1<<2)|(1<<1)|(1<<0)); // PMR1
 159     sleep(HZ/100);
 160
 161     codec_write(0x06, (1<<3)|(1<<2)|(1<<0));               // PMR2
 162
 163
 164     codec_write(0x05, (1<<6)|(1<<4)|(1<<3)|(1<<2)|(1<<1)|(1<<0));        // PMR1
 165     codec_write(0x05, (1<<4)|(1<<3)|(1<<2)|(1<<1)|(1<<0));               // PMR1
 166
 167
 168     // DACout mode
 169     codec_write(0x01, (1<<7)|(1<<3)|(1<<5)|(1<<4));  // CR1
 170     codec_write(0x05, (1<<4)|(1<<3)|(1<<2)|(1<<1)|(1<<0)); //PMR1
 171 //    codec_write(0x06, (1<<3)|(1<<2));                // PMR2
 172
 173 printf("codec init passed");
 174
 175     codec_write(0x01, (1<<7)|(1<<3));         // CR1
 176
 177     codec_write(0x0a, 0); // 0dB digital gain
 178     codec_write(0x11, 15|(2<<6)); //
 179
 180     while(1)
 181     {
 182         printf("HDMA_CCNT0: 0x%0x FIFOSTS: 0x%0x", HDMA_CCNT0, I2S_FIFOSTS);
 183     }
 184 }