ref: a8f8de1cdeec7f9bee287c137b576e0249e8df82
dir: /sys/src/9/bitsy/screen.c/
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include "ureg.h"
#include "../port/error.h"
#define Image IMAGE
#include <draw.h>
#include <memdraw.h>
#include <cursor.h>
#include "screen.h"
#include "gamma.h"
#define MINX 8
int landscape = 0; /* orientation of the screen, default is 0: portait */
enum {
Wid = 240,
Ht = 320,
Pal0 = 0x2000, /* 16-bit pixel data in active mode (12 in passive) */
hsw = 0x00,
elw = 0x0e,
blw = 0x0d,
vsw = 0x02,
efw = 0x01,
bfw = 0x0a,
pcd = 0x10,
};
struct sa1110fb {
/* Frame buffer for 16-bit active color */
short palette[16]; /* entry 0 set to Pal0, the rest to 0 */
ushort pixel[Wid*Ht]; /* Pixel data */
} *framebuf;
enum {
/* LCD Control Register 0, lcd->lccr0 */
LEN = 0, /* 1 bit */
CMS = 1, /* 1 bit */
SDS = 2, /* 1 bit */
LDM = 3, /* 1 bit */
BAM = 4, /* 1 bit */
ERM = 5, /* 1 bit */
PAS = 7, /* 1 bit */
BLE = 8, /* 1 bit */
DPD = 9, /* 1 bit */
PDD = 12, /* 8 bits */
};
enum {
/* LCD Control Register 1, lcd->lccr1 */
PPL = 0, /* 10 bits */
HSW = 10, /* 6 bits */
ELW = 16, /* 8 bits */
BLW = 24, /* 8 bits */
};
enum {
/* LCD Control Register 2, lcd->lccr2 */
LPP = 0, /* 10 bits */
VSW = 10, /* 6 bits */
EFW = 16, /* 8 bits */
BFW = 24, /* 8 bits */
};
enum {
/* LCD Control Register 3, lcd->lccr3 */
PCD = 0, /* 8 bits */
ACB = 8, /* 8 bits */
API = 16, /* 4 bits */
VSP = 20, /* 1 bit */
HSP = 21, /* 1 bit */
PCP = 22, /* 1 bit */
OEP = 23, /* 1 bit */
};
enum {
/* LCD Status Register, lcd->lcsr */
LDD = 0, /* 1 bit */
BAU = 1, /* 1 bit */
BER = 2, /* 1 bit */
ABC = 3, /* 1 bit */
IOL = 4, /* 1 bit */
IUL = 5, /* 1 bit */
OIU = 6, /* 1 bit */
IUU = 7, /* 1 bit */
OOL = 8, /* 1 bit */
OUL = 9, /* 1 bit */
OOU = 10, /* 1 bit */
OUU = 11, /* 1 bit */
};
struct sa1110regs {
ulong lccr0;
ulong lcsr;
ulong dummies[2];
short* dbar1;
ulong dcar1;
ulong dbar2;
ulong dcar2;
ulong lccr1;
ulong lccr2;
ulong lccr3;
} *lcd;
static Memdata xgdata;
static Memimage xgscreen =
{
{ 0, 0, Wid, Ht }, /* r */
{ 0, 0, Wid, Ht }, /* clipr */
16, /* depth */
3, /* nchan */
RGB16, /* chan */
nil, /* cmap */
&xgdata, /* data */
0, /* zero */
Wid/2, /* width */
0, /* layer */
0, /* flags */
};
struct{
Point pos;
int bwid;
}out;
Memimage *gscreen;
Memimage *conscol;
Memimage *back;
Memsubfont *memdefont;
Lock screenlock;
ushort *vscreen; /* virtual screen */
Rectangle window;
Point curpos;
int h, w;
static ulong rep(ulong, int);
static void screenwin(void);
static void screenputc(char *buf);
static void bitsyscreenputs(char *s, int n);
static void scroll(void);
static void
lcdinit(void)
{
/* the following line works because main memory is direct mapped */
gpioregs->direction |=
GPIO_LDD8_o|GPIO_LDD9_o|GPIO_LDD10_o|GPIO_LDD11_o
|GPIO_LDD12_o|GPIO_LDD13_o|GPIO_LDD14_o|GPIO_LDD15_o;
gpioregs->altfunc |=
GPIO_LDD8_o|GPIO_LDD9_o|GPIO_LDD10_o|GPIO_LDD11_o
|GPIO_LDD12_o|GPIO_LDD13_o|GPIO_LDD14_o|GPIO_LDD15_o;
framebuf->palette[0] = Pal0;
lcd->dbar1 = framebuf->palette;
lcd->lccr3 = pcd<<PCD | 0<<ACB | 0<<API | 1<<VSP | 1<<HSP | 0<<PCP | 0<<OEP;
lcd->lccr2 = (Wid-1)<<LPP | vsw<<VSW | efw<<EFW | bfw<<BFW;
lcd->lccr1 = (Ht-16)<<PPL | hsw<<HSW | elw<<ELW | blw<<BLW;
lcd->lccr0 = 1<<LEN | 0<<CMS | 0<<SDS | 1<<LDM | 1<<BAM | 1<<ERM | 1<<PAS | 0<<BLE | 0<<DPD | 0<<PDD;
}
void
flipscreen(int ls) {
if (ls == landscape)
return;
if (ls) {
gscreen->r = Rect(0, 0, Ht, Wid);
gscreen->clipr = gscreen->r;
gscreen->width = Ht/2;
xgdata.bdata = (uchar *)framebuf->pixel;
} else {
gscreen->r = Rect(0, 0, Wid, Ht);
gscreen->clipr = gscreen->r;
gscreen->width = Wid/2;
xgdata.bdata = (uchar *)vscreen;
}
landscape = ls;
}
void
lcdtweak(Cmdbuf *cmd)
{
if(cmd->nf < 4)
return;
if(*cmd->f[0] == 'h')
lcd->lccr1 = ((Ht-16)<<PPL)
| (strtol(cmd->f[1], 0, 0)<<HSW)
| (strtol(cmd->f[2], 0, 0)<<ELW)
| (strtol(cmd->f[3], 0, 0)<<BLW);
if(*cmd->f[0] == 'v')
lcd->lccr2 = ((Wid-1)<<LPP)
| (strtol(cmd->f[1], 0, 0)<<VSW)
| (strtol(cmd->f[2], 0, 0)<<EFW)
| (strtol(cmd->f[3], 0, 0)<<BFW);
}
void
screenpower(int on)
{
blankscreen(on == 0);
}
void
screeninit(void)
{
int i;
/* map the lcd regs into the kernel's virtual space */
lcd = (struct sa1110regs*)mapspecial(LCDREGS, sizeof(struct sa1110regs));;
framebuf = xspanalloc(sizeof *framebuf, 0x100, 0);
vscreen = xalloc(sizeof(ushort)*Wid*Ht);
lcdpower(1);
lcdinit();
gscreen = &xgscreen;
xgdata.ref = 1;
i = 0;
if (landscape) {
gscreen->r = Rect(0, 0, Ht, Wid);
gscreen->clipr = gscreen->r;
gscreen->width = Ht/2;
xgdata.bdata = (uchar *)framebuf->pixel;
while (i < Wid*Ht*1/3) framebuf->pixel[i++] = 0xf800; /* red */
while (i < Wid*Ht*2/3) framebuf->pixel[i++] = 0xffff; /* white */
while (i < Wid*Ht*3/3) framebuf->pixel[i++] = 0x001f; /* blue */
} else {
gscreen->r = Rect(0, 0, Wid, Ht);
gscreen->clipr = gscreen->r;
gscreen->width = Wid/2;
xgdata.bdata = (uchar *)vscreen;
while (i < Wid*Ht*1/3) vscreen[i++] = 0xf800; /* red */
while (i < Wid*Ht*2/3) vscreen[i++] = 0xffff; /* white */
while (i < Wid*Ht*3/3) vscreen[i++] = 0x001f; /* blue */
flushmemscreen(gscreen->r);
}
memimageinit();
memdefont = getmemdefont();
out.pos.x = MINX;
out.pos.y = 0;
out.bwid = memdefont->info[' '].width;
blanktime = 3; /* minutes */
screenwin();
// screenputs = bitsyscreenputs;
screenputs = nil;
}
void
flushmemscreen(Rectangle r)
{
int x, y;
ulong start, end;
if (landscape == 0) {
if (r.min.x < 0) r.min.x = 0;
if (r.max.x > Wid) r.max.x = Wid;
if (r.min.y < 0) r.min.y = 0;
if (r.max.y > Ht) r.max.y = Ht;
for (x = r.min.x; x < r.max.x; x++)
for (y = r.min.y; y < r.max.y; y++)
framebuf->pixel[(x+1)*Ht-1-y] = gamma[vscreen[y*Wid+x]];
start = (ulong)&framebuf->pixel[(r.min.x+1)*Ht-1-(r.max.y-1)];
end = (ulong)&framebuf->pixel[(r.max.x-1+1)*Ht-1-(r.min.y)];
} else {
start = (ulong)&framebuf->pixel[r.min.y*Ht + r.min.x];
end = (ulong)&framebuf->pixel[(r.max.y-1)*Ht + r.max.x - 1];
}
cachewbregion(start, end-start);
}
/*
* export screen to devdraw
*/
uchar*
attachscreen(Rectangle *r, ulong *chan, int* d, int *width, int *softscreen)
{
*r = gscreen->r;
*d = gscreen->depth;
*chan = gscreen->chan;
*width = gscreen->width;
*softscreen = (landscape == 0);
return (uchar*)gscreen->data->bdata;
}
void
getcolor(ulong p, ulong* pr, ulong* pg, ulong* pb)
{
USED(p, pr, pg, pb);
}
int
setcolor(ulong p, ulong r, ulong g, ulong b)
{
USED(p,r,g,b);
return 0;
}
void
blankscreen(int blank)
{
int cnt;
if (blank) {
lcd->lccr0 &= ~(1<<LEN); /* disable the LCD */
cnt = 0;
while((lcd->lcsr & (1<<LDD)) == 0) {
delay(10);
if (++cnt == 100) {
iprint("LCD doesn't stop\n");
break;
}
}
lcdpower(0);
} else {
lcdpower(1);
lcdinit();
}
}
static void
bitsyscreenputs(char *s, int n)
{
int i;
Rune r;
char buf[4];
if(!islo()) {
/* don't deadlock trying to print in interrupt */
if(!canlock(&screenlock))
return;
}
else
lock(&screenlock);
while(n > 0){
i = chartorune(&r, s);
if(i == 0){
s++;
--n;
continue;
}
memmove(buf, s, i);
buf[i] = 0;
n -= i;
s += i;
screenputc(buf);
}
unlock(&screenlock);
}
static void
screenwin(void)
{
Point p, q;
char *greet;
Memimage *orange;
Rectangle r;
memsetchan(gscreen, RGB16);
back = memwhite;
conscol = memblack;
orange = allocmemimage(Rect(0,0,1,1), RGB16);
orange->flags |= Frepl;
orange->clipr = gscreen->r;
orange->data->bdata[0] = 0x40;
orange->data->bdata[1] = 0xfd;
w = memdefont->info[' '].width;
h = memdefont->height;
r = insetrect(gscreen->r, 4);
memimagedraw(gscreen, r, memblack, ZP, memopaque, ZP, S);
window = insetrect(r, 4);
memimagedraw(gscreen, window, memwhite, ZP, memopaque, ZP, S);
memimagedraw(gscreen, Rect(window.min.x, window.min.y,
window.max.x, window.min.y+h+5+6), orange, ZP, nil, ZP, S);
freememimage(orange);
window = insetrect(window, 5);
greet = " Plan 9 Console ";
p = addpt(window.min, Pt(10, 0));
q = memsubfontwidth(memdefont, greet);
memimagestring(gscreen, p, conscol, ZP, memdefont, greet);
flushmemscreen(r);
window.min.y += h+6;
curpos = window.min;
window.max.y = window.min.y+((window.max.y-window.min.y)/h)*h;
}
static void
screenputc(char *buf)
{
Point p;
int w, pos;
Rectangle r;
static int *xp;
static int xbuf[256];
if(xp < xbuf || xp >= &xbuf[sizeof(xbuf)])
xp = xbuf;
switch(buf[0]) {
case '\n':
if(curpos.y+h >= window.max.y)
scroll();
curpos.y += h;
screenputc("\r");
break;
case '\r':
xp = xbuf;
curpos.x = window.min.x;
break;
case '\t':
p = memsubfontwidth(memdefont, " ");
w = p.x;
if(curpos.x >= window.max.x-4*w)
screenputc("\n");
pos = (curpos.x-window.min.x)/w;
pos = 4-(pos%4);
*xp++ = curpos.x;
r = Rect(curpos.x, curpos.y, curpos.x+pos*w, curpos.y + h);
memimagedraw(gscreen, r, back, back->r.min, nil, back->r.min, S);
flushmemscreen(r);
curpos.x += pos*w;
break;
case '\b':
if(xp <= xbuf)
break;
xp--;
r = Rect(*xp, curpos.y, curpos.x, curpos.y + h);
memimagedraw(gscreen, r, back, back->r.min, nil, back->r.min, S);
flushmemscreen(r);
curpos.x = *xp;
break;
case '\0':
break;
default:
p = memsubfontwidth(memdefont, buf);
w = p.x;
if(curpos.x >= window.max.x-w)
screenputc("\n");
*xp++ = curpos.x;
r = Rect(curpos.x, curpos.y, curpos.x+w, curpos.y + h);
memimagedraw(gscreen, r, back, back->r.min, nil, back->r.min, S);
memimagestring(gscreen, curpos, conscol, ZP, memdefont, buf);
flushmemscreen(r);
curpos.x += w;
}
}
static void
scroll(void)
{
int o;
Point p;
Rectangle r;
o = 8*h;
r = Rpt(window.min, Pt(window.max.x, window.max.y-o));
p = Pt(window.min.x, window.min.y+o);
memimagedraw(gscreen, r, gscreen, p, nil, p, S);
flushmemscreen(r);
r = Rpt(Pt(window.min.x, window.max.y-o), window.max);
memimagedraw(gscreen, r, back, ZP, nil, ZP, S);
flushmemscreen(r);
curpos.y -= o;
}