long
gpioread(Chan *c, void *va, long n, vlong off)
{
int type, scheme;
uint pin;
char *a;
a = va;
if(c->qid.type & QTDIR)
{
return devdirread(c, va, n, 0, 0, gpiogen);
}
type = FILE_TYPE(c->qid);
scheme = SCHEME_TYPE(c->qid);
if(scheme != Qgeneric && scheme != pinscheme)
{
error(nil);
}
switch(type)
{
case Qdata:
pin = PIN_NUMBER(c->qid);
a[0] = (gpioin(pin))?'1':'0';
n = 1;
break;
case Qctl:
break;
case Qevent:
if(off >= 4)
{
off %= 4;
eventvalue = 0;
}
sleep(&rend, isset, 0);
if(off + n > 4)
{
n = 4 - off;
}
memmove(a, &eventvalue + off, n);
}
return n;
}
long
gpiowrite(Chan *c, void *va, long n, vlong)
{
int type, i, scheme;
uint pin;
char *arg;
Cmdbuf *cb;
Cmdtab *ct;
if(c->qid.type & QTDIR)
{
error(Eisdir);
}
type = FILE_TYPE(c->qid);
scheme = SCHEME_TYPE(c->qid);
if(scheme != Qgeneric && scheme != pinscheme)
{
error(nil);
}
cb = parsecmd(va, n);
if(waserror())
{
free(cb);
nexterror();
}
ct = lookupcmd(cb, gpiocmd, nelem(gpiocmd));
if(ct == nil)
{
error(Ebadctl);
}
switch(type)
{
case Qdata:
pin = PIN_NUMBER(c->qid);
switch(ct->index)
{
case CMzero:
gpioout(pin, 0);
break;
case CMone:
gpioout(pin, 1);
break;
default:
error(Ebadctl);
}
break;
case Qctl:
switch(ct->index)
{
case CMscheme:
arg = cb->f[1];
for(i = 0; i < nelem(schemename); i++)
{
if(strncmp(schemename[i], arg, strlen(schemename[i])) == 0)
{
pinscheme = i;
break;
}
}
break;
case CMfunc:
pin = getpin(cb->f[2]);
arg = cb->f[1];
if(pin == -1) {
error(Ebadctl);
}
for(i = 0; i < nelem(funcname); i++)
{
if(strncmp(funcname[i], arg, strlen(funcname[i])) == 0)
{
gpiofuncset(pin, i);
break;
}
}
break;
case CMpull:
pin = getpin(cb->f[2]);
if(pin == -1) {
error(Ebadctl);
}
arg = cb->f[1];
for(i = 0; i < nelem(pudname); i++)
{
if(strncmp(pudname[i], arg, strlen(pudname[i])) == 0)
{
gpiopullset(pin, i);
break;
}
}
break;
case CMevent:
pin = getpin(cb->f[3]);
if(pin == -1) {
error(Ebadctl);
}
arg = cb->f[1];
for(i = 0; i < nelem(evtypename); i++)
{
if(strncmp(evtypename[i], arg, strlen(evtypename[i])) == 0)
{
gpioevent(pin, i, (cb->f[2][0] == 'e'));
break;
}
}
break;
default:
error(Ebadctl);
}
break;
}
free(cb);
poperror();
return n;
}
EMEV_MUX_PIN(lcd3_pxclkb, 19, LCD3_PXCLKB);
EMEV_MUX_PIN(lcd3_clk_i, 20, LCD3_CLK_I);
static const unsigned int lcd3_sync_pins[] = {
/* HS, VS, DE */
21, 22, 23,
};
static const unsigned int lcd3_sync_mux[] = {
LCD3_HS_MARK, LCD3_VS_MARK, LCD3_DE_MARK,
};
static const unsigned int lcd3_rgb888_pins[] = {
/* R[0:7], G[0:7], B[0:7] */
32, 33, 34, 35,
36, 37, 38, 39,
40, 41, PIN_NUMBER(2, 17), PIN_NUMBER(3, 17),
PIN_NUMBER(4, 17), PIN_NUMBER(2, 16), PIN_NUMBER(3, 16),
PIN_NUMBER(4, 16),
42, 43, PIN_NUMBER(2, 15), PIN_NUMBER(3, 15),
PIN_NUMBER(4, 15), PIN_NUMBER(2, 14), PIN_NUMBER(3, 14),
PIN_NUMBER(4, 14)
};
static const unsigned int lcd3_rgb888_mux[] = {
LCD3_R0_MARK, LCD3_R1_MARK, LCD3_R2_MARK, LCD3_R3_MARK,
LCD3_R4_MARK, LCD3_R5_MARK, LCD3_R6_MARK, LCD3_R7_MARK,
LCD3_G0_MARK, LCD3_G1_MARK, LCD3_G2_MARK, LCD3_G3_MARK,
LCD3_G4_MARK, LCD3_G5_MARK, LCD3_G6_MARK, LCD3_G7_MARK,
LCD3_B0_MARK, LCD3_B1_MARK, LCD3_B2_MARK, LCD3_B3_MARK,
LCD3_B4_MARK, LCD3_B5_MARK, LCD3_B6_MARK, LCD3_B7_MARK,
};
