#include <devices.h>
#include <s3c2400.h>
+DECLARE_GLOBAL_DATA_PTR;
+
#ifdef CONFIG_VFD
/************************************************************************/
#define BLAU 0x0C
#define VIOLETT 0X0D
-ulong vfdbase;
-ulong frame_buf_size;
+/* MAGIC */
+#define FRAME_BUF_SIZE ((256*4*56)/8)
#define frame_buf_offs 4
+/* defines for starting Timer3 as CPLD-Clk */
+#define START3 (1 << 16)
+#define UPDATE3 (1 << 17)
+#define INVERT3 (1 << 18)
+#define RELOAD3 (1 << 19)
+
+/* CPLD-Register for controlling vfd-blank-signal */
+#define VFD_DISABLE (*(volatile uchar *)0x04038000=0x0000)
+#define VFD_ENABLE (*(volatile uchar *)0x04038000=0x0001)
+
+/* Supported VFD Types */
+#define VFD_TYPE_T119C 1 /* Noritake T119C VFD */
+#define VFD_TYPE_MN11236 2
+
+/*#define NEW_CPLD_CLK*/
+
+int vfd_board_id;
+
/* taken from armboot/common/vfd.c */
-ulong adr_vfd_table[112][18][2][4][2];
+unsigned long adr_vfd_table[112][18][2][4][2];
unsigned char bit_vfd_table[112][18][2][4][2];
/*
unsigned int bit, display;
unsigned char temp, bit_nr;
- for (adr=vfdbase; adr<=(vfdbase+7168); adr+=4) /*clear frame buffer */
- (*(volatile ulong*)(adr))=0;
-
- for(display=0;display<=3;display++)
- {
- for(grid_cycle=0;grid_cycle<=55;grid_cycle++)
- {
- bit = grid_cycle*256*4+(grid_cycle+200)*4+frame_buf_offs+display;
+ /*
+ * clear frame buffer (logical clear => set to "black")
+ */
+ memset ((void *)(gd->fb_base), 0, FRAME_BUF_SIZE);
+
+ switch (gd->vfd_type) {
+ case VFD_TYPE_T119C:
+ for (display=0; display<4; display++) {
+ for(grid_cycle=0; grid_cycle<56; grid_cycle++) {
+ bit = grid_cycle * 256 * 4 +
+ (grid_cycle + 200) * 4 +
+ frame_buf_offs + display;
/* wrap arround if offset (see manual S3C2400) */
- if (bit>=frame_buf_size*8)
- bit = bit-(frame_buf_size*8);
- adr = vfdbase+(bit/32)*4+(3-(bit%32)/8);
- bit_nr = bit%8;
- bit_nr = (bit_nr>3)?bit_nr-4:bit_nr+4;
+ if (bit>=FRAME_BUF_SIZE*8)
+ bit = bit - (FRAME_BUF_SIZE * 8);
+ adr = gd->fb_base + (bit/32) * 4 + (3 - (bit%32) / 8);
+ bit_nr = bit % 8;
+ bit_nr = (bit_nr > 3) ? bit_nr-4 : bit_nr+4;
temp=(*(volatile unsigned char*)(adr));
- temp|=(1<<bit_nr);
+ temp |= (1<<bit_nr);
(*(volatile unsigned char*)(adr))=temp;
if(grid_cycle<55)
else
bit = grid_cycle*256*4+200*4+frame_buf_offs+display-4; /* grid nr. 0 */
/* wrap arround if offset (see manual S3C2400) */
- if (bit>=frame_buf_size*8)
- bit = bit-(frame_buf_size*8);
- adr = vfdbase+(bit/32)*4+(3-(bit%32)/8);
+ if (bit>=FRAME_BUF_SIZE*8)
+ bit = bit-(FRAME_BUF_SIZE*8);
+ adr = gd->fb_base+(bit/32)*4+(3-(bit%32)/8);
bit_nr = bit%8;
bit_nr = (bit_nr>3)?bit_nr-4:bit_nr+4;
temp=(*(volatile unsigned char*)(adr));
- temp|=(1<<bit_nr);
+ temp |= (1<<bit_nr);
(*(volatile unsigned char*)(adr))=temp;
}
+ }
+ break;
+ case VFD_TYPE_MN11236:
+ for (display=0; display<4; display++) {
+ for (grid_cycle=0; grid_cycle<38; grid_cycle++) {
+ bit = grid_cycle * 256 * 4 +
+ (253 - grid_cycle) * 4 +
+ frame_buf_offs + display;
+ /* wrap arround if offset (see manual S3C2400) */
+ if (bit>=FRAME_BUF_SIZE*8)
+ bit = bit - (FRAME_BUF_SIZE * 8);
+ adr = gd->fb_base + (bit/32) * 4 + (3 - (bit%32) / 8);
+ bit_nr = bit % 8;
+ bit_nr = (bit_nr > 3) ? bit_nr-4 : bit_nr+4;
+ temp=(*(volatile unsigned char*)(adr));
+ temp |= (1<<bit_nr);
+ (*(volatile unsigned char*)(adr))=temp;
+
+ if(grid_cycle<37)
+ bit = grid_cycle*256*4+(252-grid_cycle)*4+frame_buf_offs+display;
+
+ /* wrap arround if offset (see manual S3C2400) */
+ if (bit>=FRAME_BUF_SIZE*8)
+ bit = bit-(FRAME_BUF_SIZE*8);
+ adr = gd->fb_base+(bit/32)*4+(3-(bit%32)/8);
+ bit_nr = bit%8;
+ bit_nr = (bit_nr>3)?bit_nr-4:bit_nr+4;
+ temp=(*(volatile unsigned char*)(adr));
+ temp |= (1<<bit_nr);
+ (*(volatile unsigned char*)(adr))=temp;
+ }
+ }
+ break;
+ default:
+ printf ("Warning: unknown display type\n");
+ break;
}
}
*/
void create_vfd_table(void)
{
- unsigned int vfd_table[112][18][2][4][2];
- ulong adr;
- unsigned int x, y, color, display, entry, pixel, bit_nr;
-
- /*
- * Create translation table for Noritake-T119C-VFD-specific
- * organized frame-buffer.
- * Created is the number of the bit in the framebuffer (the
- * first transferred pixel of each frame is bit 0).
- */
- for(y=0;y<=17;y++) /* Zeile */
- {
- for(x=0;x<=111;x++) /* Spalten */
- {
- /*Display 0 blaue Pixel Eintrag 1 */
- vfd_table[x][y][0][0][0]=((x%4)*4+y*16+(x/4)*2048);
- /*Display 0 rote Pixel Eintrag 1 */
- vfd_table[x][y][1][0][0]=((x%4)*4+y*16+(x/4)*2048+512);
- if(x<=1)
- {
- /*Display 0 blaue Pixel Eintrag 2 */
- vfd_table[x][y][0][0][1]=(((x+112)%4)*4+y*16+((x+110)/4)*2048+1024);
- /*Display 0 rote Pixel Eintrag 2 */
- vfd_table[x][y][1][0][1]=(((x+112)%4)*4+y*16+((x+110)/4)*2048+512+1024);
- }
- else
- {
- /*Display 0 blaue Pixel Eintrag 2 */
- vfd_table[x][y][0][0][1]=((x%4)*4+y*16+((x-2)/4)*2048+1024);
- /*Display 0 rote Pixel Eintrag 2 */
- vfd_table[x][y][1][0][1]=((x%4)*4+y*16+((x-2)/4)*2048+512+1024);
- }
- /*Display 1 blaue Pixel Eintrag 1 */
- vfd_table[x][y][0][1][0]=((x%4)*4+y*16+(x/4)*2048+1);
- /*Display 1 rote Pixel Eintrag 1 */
- vfd_table[x][y][1][1][0]=((x%4)*4+y*16+(x/4)*2048+512+1);
- if(x<=1)
- {
- /*Display 1 blaue Pixel Eintrag 2 */
- vfd_table[x][y][0][1][1]=(((x+112)%4)*4+y*16+((x+110)/4)*2048+1+1024);
- /*Display 1 rote Pixel Eintrag 2 */
- vfd_table[x][y][1][1][1]=(((x+112)%4)*4+y*16+((x+110)/4)*2048+512+1+1024);
- }
- else
- {
- /*Display 1 blaue Pixel Eintrag 2 */
- vfd_table[x][y][0][1][1]=((x%4)*4+y*16+((x-2)/4)*2048+1+1024);
- /*Display 1 rote Pixel Eintrag 2 */
- vfd_table[x][y][1][1][1]=((x%4)*4+y*16+((x-2)/4)*2048+512+1+1024);
- }
- /*Display 2 blaue Pixel Eintrag 1 */
- vfd_table[x][y][0][2][0]=((x%4)*4+y*16+(x/4)*2048+2);
- /*Display 2 rote Pixel Eintrag 1 */
- vfd_table[x][y][1][2][0]=((x%4)*4+y*16+(x/4)*2048+512+2);
- if(x<=1)
- {
- /*Display 2 blaue Pixel Eintrag 2 */
- vfd_table[x][y][0][2][1]=(((x+112)%4)*4+y*16+((x+110)/4)*2048+2+1024);
- /*Display 2 rote Pixel Eintrag 2 */
- vfd_table[x][y][1][2][1]=(((x+112)%4)*4+y*16+((x+110)/4)*2048+512+2+1024);
- }
- else
- {
- /*Display 2 blaue Pixel Eintrag 2 */
- vfd_table[x][y][0][2][1]=((x%4)*4+y*16+((x-2)/4)*2048+2+1024);
- /*Display 2 rote Pixel Eintrag 2 */
- vfd_table[x][y][1][2][1]=((x%4)*4+y*16+((x-2)/4)*2048+512+2+1024);
- }
- /*Display 3 blaue Pixel Eintrag 1 */
- vfd_table[x][y][0][3][0]=((x%4)*4+y*16+(x/4)*2048+3);
- /*Display 3 rote Pixel Eintrag 1 */
- vfd_table[x][y][1][3][0]=((x%4)*4+y*16+(x/4)*2048+512+3);
- if(x<=1)
- {
- /*Display 3 blaue Pixel Eintrag 2 */
- vfd_table[x][y][0][3][1]=(((x+112)%4)*4+y*16+((x+110)/4)*2048+3+1024);
- /*Display 3 rote Pixel Eintrag 2 */
- vfd_table[x][y][1][3][1]=(((x+112)%4)*4+y*16+((x+110)/4)*2048+512+3+1024);
- }
- else
- {
- /*Display 3 blaue Pixel Eintrag 2 */
- vfd_table[x][y][0][3][1]=((x%4)*4+y*16+((x-2)/4)*2048+3+1024);
- /*Display 3 rote Pixel Eintrag 2 */
- vfd_table[x][y][1][3][1]=((x%4)*4+y*16+((x-2)/4)*2048+512+3+1024);
- }
+ unsigned long vfd_table[112][18][2][4][2];
+ unsigned int x, y, color, display, entry, pixel;
+ unsigned int x_abcdef = 0;
+
+ switch (gd->vfd_type) {
+ case VFD_TYPE_T119C:
+ for(y=0; y<=17; y++) { /* Line */
+ for(x=0; x<=111; x++) { /* Column */
+ for(display=0; display <=3; display++) {
+
+ /* Display 0 blue pixels */
+ vfd_table[x][y][0][display][0] =
+ (x==0) ? y*16+display
+ : (x%4)*4+y*16+((x-1)/2)*1024+display;
+ /* Display 0 red pixels */
+ vfd_table[x][y][1][display][0] =
+ (x==0) ? y*16+512+display
+ : (x%4)*4+y*16+((x-1)/2)*1024+512+display;
+ }
}
+ }
+ break;
+ case VFD_TYPE_MN11236:
+ for(y=0; y<=17; y++) { /* Line */
+ for(x=0; x<=111; x++) { /* Column */
+ for(display=0; display <=3; display++) {
+
+ vfd_table[x][y][0][display][0]=0;
+ vfd_table[x][y][0][display][1]=0;
+ vfd_table[x][y][1][display][0]=0;
+ vfd_table[x][y][1][display][1]=0;
+
+ switch (x%6) {
+ case 0: x_abcdef=0; break; /* a -> a */
+ case 1: x_abcdef=2; break; /* b -> c */
+ case 2: x_abcdef=4; break; /* c -> e */
+ case 3: x_abcdef=5; break; /* d -> f */
+ case 4: x_abcdef=3; break; /* e -> d */
+ case 5: x_abcdef=1; break; /* f -> b */
+ }
+
+ /* blue pixels */
+ vfd_table[x][y][0][display][0] =
+ (x>1) ? x_abcdef*4+((x-1)/3)*1024+y*48+display
+ : x_abcdef*4+ 0+y*48+display;
+ /* blue pixels */
+ if (x>1 && (x-1)%3)
+ vfd_table[x][y][0][display][1] = x_abcdef*4+((x-1)/3+1)*1024+y*48+display;
+
+ /* red pixels */
+ vfd_table[x][y][1][display][0] =
+ (x>1) ? x_abcdef*4+24+((x-1)/3)*1024+y*48+display
+ : x_abcdef*4+24+ 0+y*48+display;
+ /* red pixels */
+ if (x>1 && (x-1)%3)
+ vfd_table[x][y][1][display][1] = x_abcdef*4+24+((x-1)/3+1)*1024+y*48+display;
+ }
+ }
+ }
+ break;
+ default:
+ /* do nothing */
+ return;
}
/*
- * Create translation table for Noritake-T119C-VFD-specific
- * organized frame-buffer
* Create table with entries for physical byte adresses and
* bit-number within the byte
* from table with bit-numbers within the total framebuffer
*/
- for(y=0;y<=17;y++)
- {
- for(x=0;x<=111;x++)
- {
- for(color=0;color<=1;color++)
- {
- for(display=0;display<=3;display++)
- {
- for(entry=0;entry<=1;entry++)
- {
- pixel = vfd_table[x][y][color][display][entry] + frame_buf_offs;
- /*
- * wrap arround if offset
- * (see manual S3C2400)
- */
- if (pixel>=frame_buf_size*8)
- pixel = pixel-(frame_buf_size*8);
- adr = vfdbase+(pixel/32)*4+(3-(pixel%32)/8);
- bit_nr = pixel%8;
- bit_nr = (bit_nr>3)?bit_nr-4:bit_nr+4;
- adr_vfd_table[x][y][color][display][entry] = adr;
- bit_vfd_table[x][y][color][display][entry] = bit_nr;
- }
- }
+ for(y=0;y<18;y++) {
+ for(x=0;x<112;x++) {
+ for(color=0;color<2;color++) {
+ for(display=0;display<4;display++) {
+ for(entry=0;entry<2;entry++) {
+ unsigned long adr = gd->fb_base;
+ unsigned int bit_nr = 0;
+
+ pixel = vfd_table[x][y][color][display][entry] + frame_buf_offs;
+ /*
+ * wrap arround if offset
+ * (see manual S3C2400)
+ */
+ if (pixel>=FRAME_BUF_SIZE*8)
+ pixel = pixel-(FRAME_BUF_SIZE*8);
+ adr = gd->fb_base+(pixel/32)*4+(3-(pixel%32)/8);
+ bit_nr = pixel%8;
+ bit_nr = (bit_nr>3)?bit_nr-4:bit_nr+4;
+
+ adr_vfd_table[x][y][color][display][entry] = adr;
+ bit_vfd_table[x][y][color][display][entry] = bit_nr;
}
+ }
}
+ }
}
}
/*
* Set/clear pixel of the VFDs
*/
-void set_vfd_pixel(unsigned char x, unsigned char y, unsigned char color, unsigned char display, unsigned char value)
+void set_vfd_pixel(unsigned char x, unsigned char y,
+ unsigned char color, unsigned char display,
+ unsigned char value)
{
ulong adr;
unsigned char bit_nr, temp;
- if (value!=0)
- {
- /* Pixel-Eintrag Nr. 1 */
- adr = adr_vfd_table[x][y][color][display][0];
- /* Pixel-Eintrag Nr. 1 */
- bit_nr = bit_vfd_table[x][y][color][display][0];
- temp=(*(volatile unsigned char*)(adr));
- temp|=1<<bit_nr;
- (*(volatile unsigned char*)(adr))=temp;
-
- /* Pixel-Eintrag Nr. 2 */
- adr = adr_vfd_table[x][y][color][display][1];
- /* Pixel-Eintrag Nr. 2 */
- bit_nr = bit_vfd_table[x][y][color][display][1];
- temp=(*(volatile unsigned char*)(adr));
- temp|=1<<bit_nr;
- (*(volatile unsigned char*)(adr))=temp;
+ if (! gd->vfd_type) {
+ /* Unknown type. */
+ return;
}
+
+ /* Pixel-Eintrag Nr. 1 */
+ adr = adr_vfd_table[x][y][color][display][0];
+ /* Pixel-Eintrag Nr. 1 */
+ bit_nr = bit_vfd_table[x][y][color][display][0];
+ temp=(*(volatile unsigned char*)(adr));
+
+ if (value)
+ temp |= (1<<bit_nr);
else
- {
- /* Pixel-Eintrag Nr. 1 */
- adr = adr_vfd_table[x][y][color][display][0];
- /* Pixel-Eintrag Nr. 1 */
- bit_nr = bit_vfd_table[x][y][color][display][0];
- temp=(*(volatile unsigned char*)(adr));
- temp&=~(1<<bit_nr);
- (*(volatile unsigned char*)(adr))=temp;
-
- /* Pixel-Eintrag Nr. 2 */
- adr = adr_vfd_table[x][y][color][display][1];
- /* Pixel-Eintrag Nr. 2 */
- bit_nr = bit_vfd_table[x][y][color][display][1];
- temp=(*(volatile unsigned char*)(adr));
- temp&=~(1<<bit_nr);
- (*(volatile unsigned char*)(adr))=temp;
- }
+ temp &= ~(1<<bit_nr);
+
+ (*(volatile unsigned char*)(adr))=temp;
}
/*
}
}
}
- display++;
- if (display > 3)
- display = 0;
+ if (display > 0)
+ display--;
+ else
+ display = 3;
+ }
+}
+
+/*
+ * This function initializes VFD clock that is needed for the CPLD that
+ * manages the keyboard.
+ */
+int vfd_init_clocks (void)
+{
+ int i;
+
+ S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
+ S3C24X0_TIMERS * const timers = S3C24X0_GetBase_TIMERS();
+ S3C24X0_LCD * const lcd = S3C24X0_GetBase_LCD();
+
+ /* try to determine display type from the value
+ * defined by pull-ups
+ */
+ gpio->PCUP = (gpio->PCUP & 0xFFF0); /* activate GPC0...GPC3 pullups */
+ gpio->PCCON = (gpio->PCCON & 0xFFFFFF00); /* configure GPC0...GPC3 as inputs */
+ /* allow signals to settle */
+ for (i=0; i<10000; i++) /* udelay isn't working yet at this point! */
+ __asm("NOP");
+ vfd_board_id = (~gpio->PCDAT) & 0x000F; /* read GPC0...GPC3 port pins */
+
+ VFD_DISABLE; /* activate blank for the vfd */
+
+#define NEW_CPLD_CLK
+
+#ifdef NEW_CPLD_CLK
+ if (vfd_board_id) {
+ /* If new board revision, then use PWM 3 as cpld-clock */
+ /* Enable 500 Hz timer for fill level sensor to operate properly */
+ /* Configure TOUT3 as functional pin, disable pull-up */
+ gpio->PDCON &= ~0x30000;
+ gpio->PDCON |= 0x20000;
+ gpio->PDUP |= (1 << 8);
+
+ /* Configure the prescaler */
+ timers->TCFG0 &= ~0xff00;
+ timers->TCFG0 |= 0x0f00;
+
+ /* Select MUX input (divider) for timer3 (1/16) */
+ timers->TCFG1 &= ~0xf000;
+ timers->TCFG1 |= 0x3000;
+
+ /* Enable autoreload and set the counter and compare
+ * registers to values for the 500 Hz clock
+ * (for a given prescaler (15) and divider (16)):
+ * counter = (66000000 / 500) >> 9;
+ */
+ timers->ch[3].TCNTB = 0x101;
+ timers->ch[3].TCMPB = 0x101 / 2;
+
+ /* Start timer */
+ timers->TCON = (timers->TCON | UPDATE3 | RELOAD3) & ~INVERT3;
+ timers->TCON = (timers->TCON | START3) & ~UPDATE3;
}
+#endif
+ /* If old board revision, then use vm-signal as cpld-clock */
+ lcd->LCDCON2 = 0x00FFC000;
+ lcd->LCDCON3 = 0x0007FF00;
+ lcd->LCDCON4 = 0x00000000;
+ lcd->LCDCON5 = 0x00000400;
+ lcd->LCDCON1 = 0x00000B75;
+ /* VM (GPD1) is used as clock for the CPLD */
+ gpio->PDCON = (gpio->PDCON & 0xFFFFFFF3) | 0x00000008;
+
+ return 0;
}
/*
* initialize LCD-Controller of the S3C2400 for using VFDs
+ *
+ * VFD detection depends on the board revision:
+ * starting from Rev. 200 a type code can be read from the data pins,
+ * driven by some pull-up resistors; all earlier systems must be
+ * manually configured. The type is set in the "vfd_type" environment
+ * variable.
*/
int drv_vfd_init(void)
{
+ S3C24X0_LCD * const lcd = S3C24X0_GetBase_LCD();
+ S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
+ char *tmp;
ulong palette;
static int vfd_init_done = 0;
-
- DECLARE_GLOBAL_DATA_PTR;
+ int vfd_inv_data = 0;
if (vfd_init_done != 0)
- return;
+ return (0);
vfd_init_done = 1;
- vfdbase = gd->fb_base;
+ debug("Detecting Revison of WA4-VFD: ID=0x%X\n", vfd_board_id);
+
+ switch (vfd_board_id) {
+ case 0: /* board revision < Rev.200 */
+ if ((tmp = getenv ("vfd_type")) == NULL) {
+ break;
+ }
+ if (strcmp(tmp, "T119C") == 0) {
+ gd->vfd_type = VFD_TYPE_T119C;
+ } else if (strcmp(tmp, "MN11236") == 0) {
+ gd->vfd_type = VFD_TYPE_MN11236;
+ } else {
+ /* cannot use printf for a warning here */
+ gd->vfd_type = 0; /* unknown */
+ }
+
+ break;
+ default: /* default to MN11236, data inverted */
+ gd->vfd_type = VFD_TYPE_MN11236;
+ vfd_inv_data = 1;
+ setenv ("vfd_type", "MN11236");
+ }
+ debug ("VFD type: %s%s\n",
+ (gd->vfd_type == VFD_TYPE_T119C) ? "T119C" :
+ (gd->vfd_type == VFD_TYPE_MN11236) ? "MN11236" :
+ "unknown",
+ vfd_inv_data ? ", inverted data" : "");
+
+ gd->fb_base = gd->fb_base;
create_vfd_table();
init_grid_ctrl();
+ for (palette=0; palette < 16; palette++)
+ (*(volatile unsigned int*)(PALETTE+(palette*4)))=palette;
+ for (palette=16; palette < 256; palette++)
+ (*(volatile unsigned int*)(PALETTE+(palette*4)))=0x00;
+
/*
* Hinweis: Der Framebuffer ist um genau ein Nibble verschoben
* Das erste angezeigte Pixel wird aus dem zweiten Nibble geholt
* (wrap around)
* see manual S3C2400
*/
+ /* Stopp LCD-Controller */
+ lcd->LCDCON1 = 0x00000000;
/* frame buffer startadr */
- rLCDSADDR1 = vfdbase >> 1;
+ lcd->LCDSADDR1 = gd->fb_base >> 1;
/* frame buffer endadr */
- rLCDSADDR2 = (vfdbase + frame_buf_size) >> 1;
- rLCDSADDR3 = ((256/4));
-
- /* Port-Pins als LCD-Ausgang */
- rPCCON = (rPCCON & 0xFFFFFF00)| 0x000000AA;
- /* Port-Pins als LCD-Ausgang */
- rPDCON = (rPDCON & 0xFFFFFF03)| 0x000000A8;
-#ifdef WITH_VFRAME
- /* mit VFRAME zum Messen */
- rPDCON = (rPDCON & 0xFFFFFF00)| 0x000000AA;
-#endif
+ lcd->LCDSADDR2 = (gd->fb_base + FRAME_BUF_SIZE) >> 1;
+ lcd->LCDSADDR3 = ((256/4));
+ lcd->LCDCON2 = 0x000DC000;
+ if(gd->vfd_type == VFD_TYPE_MN11236)
+ lcd->LCDCON2 = 37 << 14; /* MN11236: 38 lines */
+ else
+ lcd->LCDCON2 = 55 << 14; /* T119C: 56 lines */
+ lcd->LCDCON3 = 0x0051000A;
+ lcd->LCDCON4 = 0x00000001;
+ if (gd->vfd_type && vfd_inv_data)
+ lcd->LCDCON5 = 0x000004C0;
+ else
+ lcd->LCDCON5 = 0x00000440;
- rLCDCON2 = 0x000DC000;
- rLCDCON3 = 0x0051000A;
- rLCDCON4 = 0x00000001;
- rLCDCON5 = 0x00000440;
- rLCDCON1 = 0x00000B75;
+ /* Port pins as LCD output */
+ gpio->PCCON = (gpio->PCCON & 0xFFFFFF00)| 0x000000AA;
+ gpio->PDCON = (gpio->PDCON & 0xFFFFFF03)| 0x000000A8;
- debug ("LCDSADDR1: %lX\n", rLCDSADDR1);
- debug ("LCDSADDR2: %lX\n", rLCDSADDR2);
- debug ("LCDSADDR3: %lX\n", rLCDSADDR3);
+ /* Synchronize VFD enable with LCD controller to avoid flicker */
+ lcd->LCDCON1 = 0x00000B75; /* Start LCD-Controller */
+ while((lcd->LCDCON5 & 0x180000)!=0x100000); /* Wait for end of VSYNC */
+ while((lcd->LCDCON5 & 0x060000)!=0x040000); /* Wait for next HSYNC */
+ while((lcd->LCDCON5 & 0x060000)==0x040000);
+ while((lcd->LCDCON5 & 0x060000)!=0x000000);
+ if(gd->vfd_type)
+ VFD_ENABLE;
- for(palette=0;palette<=15;palette++)
- (*(volatile unsigned int*)(PALETTE+(palette*4)))=palette;
- for(palette=16;palette<=255;palette++)
- (*(volatile unsigned int*)(PALETTE+(palette*4)))=0x00;
+ debug ("LCDSADDR1: %lX\n", lcd->LCDSADDR1);
+ debug ("LCDSADDR2: %lX\n", lcd->LCDSADDR2);
+ debug ("LCDSADDR3: %lX\n", lcd->LCDSADDR3);
return 0;
}
+/*
+ * Disable VFD: should be run before resetting the system:
+ * disable VM, enable pull-up
+ */
+void disable_vfd (void)
+{
+ S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
+
+ VFD_DISABLE;
+ gpio->PDCON &= ~0xC;
+ gpio->PDUP &= ~0x2;
+}
+
/************************************************************************/
/* ** ROM capable initialization part - needed to reserve FB memory */
/************************************************************************/
{
ulong size;
- /* MAGIC */
- frame_buf_size = (256*4*56)/8;
-
/* Round up to nearest full page */
- size = (frame_buf_size + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
+ size = (FRAME_BUF_SIZE + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
debug ("Reserving %ldk for VFD Framebuffer at: %08lx\n", size>>10, addr);
return (size);
}
+/*
+ * Calculate fb size for VIDEOLFB_ATAG. Size returned contains fb,
+ * descriptors and palette areas.
+ */
+ulong calc_fbsize (void)
+{
+ return FRAME_BUF_SIZE;
+}
+
#endif /* CONFIG_VFD */
projects / platform / kernel / u-boot.git / blobdiff