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path: root/xc/programs/Xserver/hw/xfree86/drivers/chips/util/modClock.c
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Diffstat (limited to 'xc/programs/Xserver/hw/xfree86/drivers/chips/util/modClock.c')
-rw-r--r--xc/programs/Xserver/hw/xfree86/drivers/chips/util/modClock.c114
1 files changed, 64 insertions, 50 deletions
diff --git a/xc/programs/Xserver/hw/xfree86/drivers/chips/util/modClock.c b/xc/programs/Xserver/hw/xfree86/drivers/chips/util/modClock.c
index 9d5b90e83..de35bd5ec 100644
--- a/xc/programs/Xserver/hw/xfree86/drivers/chips/util/modClock.c
+++ b/xc/programs/Xserver/hw/xfree86/drivers/chips/util/modClock.c
@@ -1,4 +1,4 @@
-/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/chips/util/modClock.c,v 1.4 2000/09/22 11:35:49 alanh Exp $ */
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/chips/util/modClock.c,v 1.5 2001/05/09 19:57:06 dbateman Exp $ */
#ifdef __NetBSD__
# include <sys/types.h>
@@ -60,12 +60,39 @@
#define tolerance 0.01 /* +/- 1% */
+
+#define CT65520 0x1
+#define CT65525 0x2
+#define CT65530 0x3
+#define CT64200 0x4
+
+#define CT65535 0x11
+#define CT65540 0x12
+#define CT65545 0x13
+#define CT65546 0x14
+#define CT65548 0x15
+#define CT64300 0x16
+
+#define CT65550 0x31
+#define CT65554 0x32
+#define CT65555 0x33
+#define CT68554 0x34
+#define CT69000 0x35
+#define CT69030 0x36
+
+#define IS_Programmable(X) X&0x10
+#define IS_HiQV(X) X&0x20
+
+#define DotClk 0
+#define MemClk 1
+#define IS_MemClk(X) X&0x1
+
int compute_clock (
+ unsigned int ChipType,
double target,
double Fref,
unsigned int ClkMaxN,
unsigned int ClkMaxM,
- unsigned int PStart,
unsigned int *bestM,
unsigned int *bestN,
unsigned int *bestP,
@@ -104,7 +131,8 @@ int compute_clock (
they should be set to 0 on the 65548, and left untouched on
earlier chips. */
- for (PSNx = 0; PSNx <= 1; PSNx++) {
+ for (PSNx = ((ChipType == CT69000) || (ChipType == CT69030)) ? 1 : 0;
+ PSNx <= 1; PSNx++) {
unsigned int low_N, high_N;
double Fref4PSN;
@@ -113,7 +141,8 @@ int compute_clock (
low_N = 3;
high_N = ClkMaxN;
- while (Fref / (PSN * low_N) > 2.0e6)
+ while (Fref / (PSN * low_N) > (((ChipType == CT69000) ||
+ (ChipType == CT69030)) ? 5.0e6 : 2.0e6))
low_N++;
while (Fref / (PSN * high_N) < 150.0e3)
high_N--;
@@ -121,7 +150,9 @@ int compute_clock (
Fref4PSN = Fref * 4 / PSN;
for (N = low_N; N <= high_N; N++) {
double tmp = Fref4PSN / N;
- for (P = PStart; P <= 5; P++) {
+
+ for (P = (IS_HiQV(ChipType) && (ChipType != CT69000) &&
+ (ChipType != CT69030)) ? 1 : 0; P <= 5; P++) {
double Fvco_desired = target * (1 << P);
double M_desired = Fvco_desired / tmp;
/* Which way will M_desired be rounded? Do all three just to
@@ -139,7 +170,8 @@ int compute_clock (
for (M = M_low; M <= M_hi; M++) {
Fvco = tmp * M;
- if (Fvco <= 48.0e6)
+ if (Fvco <= ((ChipType == CT69000) || (ChipType == CT69030) ?
+ 100e6 : 48.0e6))
continue;
if (Fvco > 220.0e6)
break;
@@ -180,35 +212,10 @@ int compute_clock (
return 1;
}
-#define CT65520 0x1
-#define CT65525 0x2
-#define CT65530 0x3
-#define CT64200 0x4
-
-#define CT65535 0x11
-#define CT65540 0x12
-#define CT65545 0x13
-#define CT65546 0x14
-#define CT65548 0x15
-#define CT64300 0x16
-
-#define CT65550 0x31
-#define CT65554 0x32
-#define CT65555 0x33
-#define CT68554 0x34
-#define CT69000 0x35
-#define CT69030 0x36
-
-#define IS_Programmable(X) X&0x10
-#define IS_HiQV(X) X&0x20
-
-#define DotClk 0
-#define MemClk 1
-#define IS_MemClk(X) X&0x1
-
int set_clock(
unsigned int ChipType,
unsigned int ClockType,
+ unsigned int ProgClock,
unsigned int M,
unsigned int N,
unsigned int P,
@@ -235,18 +242,18 @@ int set_clock(
outb(0x3D6, 0xCE);
outb(0x3D7, (0x80 | (P * 16 + (PSN == 1))));
} else {
- printf ("XRC8 = 0x%02X\n", M - 2);
- printf ("XRC9 = 0x%02X\n", N - 2);
- printf ("XRCA = 0x%02X\n", 0);
- printf ("XRCB = 0x%02X\n", P * 16 + (PSN == 1));
+ printf ("XR%X = 0x%02X\n", 0xC0 + 4 * ProgClock, M - 2);
+ printf ("XR%X = 0x%02X\n", 0xC1 + 4 * ProgClock, N - 2);
+ printf ("XR%X = 0x%02X\n", 0xC2 + 4 * ProgClock, 0);
+ printf ("XR%X = 0x%02X\n", 0xC3 + 4 * ProgClock, P * 16 + (PSN == 1));
- outb(0x3D6, 0xC8);
+ outb(0x3D6, 0xC0 + 4 * ProgClock);
outb(0x3D7, (M - 2));
- outb(0x3D6, 0xC9);
+ outb(0x3D6, 0xC1 + 4 * ProgClock);
outb(0x3D7, (N - 2));
- outb(0x3D6, 0xCA);
+ outb(0x3D6, 0xC2 + 4 * ProgClock);
outb(0x3D7, 0x0);
- outb(0x3D6, 0xCB);
+ outb(0x3D6, 0xC3 + 4 * ProgClock);
outb(0x3D7, (P * 16 + (PSN == 1)));
}
} else {
@@ -355,10 +362,19 @@ unsigned int probe_chip(void) {
int main (int argc, char *argv[]) {
double target;
double Fref = 14318180;
- unsigned int M, N, P, PSN, ChipType, ClockType;
-
- if (argc != 2) {
- fprintf (stderr, "usage: %s freq\n", argv[0]);
+ unsigned int M, N, P, PSN, ChipType, ClockType, progclock;
+
+ switch (argc) {
+ case 2:
+ progclock = 2;
+ target = atof (argv[1]);
+ break;
+ case 3:
+ progclock = abs(atof (argv[1]));
+ target = atof (argv[2]);
+ break;
+ default:
+ fprintf (stderr, "usage: %s [-0|-1|-2] freq\n", argv[0]);
return 1;
}
@@ -371,8 +387,6 @@ int main (int argc, char *argv[]) {
ClockType = MemClk;
}
- target = atof (argv[1]);
-
ChipType = probe_chip();
if (!ChipType) {
return 1;
@@ -384,14 +398,14 @@ int main (int argc, char *argv[]) {
}
if (IS_HiQV(ChipType)) {
- if (! compute_clock(target, Fref, 63, 127, 1, &M, &N, &P, &PSN)) {
- return set_clock(ChipType, ClockType, M, N, P, PSN);
+ if (! compute_clock(ChipType, target, Fref, 63, 127, &M, &N, &P, &PSN)) {
+ return set_clock(ChipType, ClockType, progclock, M, N, P, PSN);
} else {
return 1;
}
} else {
- if (! compute_clock(target, Fref, 127, 127, 0, &M, &N, &P, &PSN)) {
- return set_clock(ChipType, ClockType, M, N, P, PSN);
+ if (! compute_clock(ChipType, target, Fref, 127, 127, &M, &N, &P, &PSN)) {
+ return set_clock(ChipType, ClockType, progclock, M, N, P, PSN);
} else {
return 1;
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-09-20 13:24:22 +0000