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Write something more sane into the pixel format register - it's not pixel size

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in bytes although that works in 8 and 16 bit colour depth.
While there do some magic number reduction.
This commit is contained in:
macallan 2009-11-18 06:10:50 +00:00
parent f682fea033
commit 1049d3d651
1 changed files with 33 additions and 10 deletions
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43
sys/dev/ic/igsfb_subr.c
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@ -1,7 +1,8 @@
/* $NetBSD: igsfb_subr.c,v 1.10 2009/11/11 17:01:17 macallan Exp $ */
/* $NetBSD: igsfb_subr.c,v 1.11 2009/11/18 06:10:50 macallan Exp $ */
/*
* Copyright (c) 2002 Valeriy E. Ushakov
* 2009 Michael Lorenz
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -31,7 +32,7 @@
* Integraphics Systems IGA 168x and CyberPro series.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: igsfb_subr.c,v 1.10 2009/11/11 17:01:17 macallan Exp $");
__KERNEL_RCSID(0, "$NetBSD: igsfb_subr.c,v 1.11 2009/11/18 06:10:50 macallan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -471,7 +472,29 @@ igsfb_set_mode(struct igsfb_devconfig *dc, const struct videomode *mode,
int vblank_start, vblank_end, hblank_start, hblank_end;
uint8_t vclk1, vclk2, vclk3, overflow;
bytes_per_pixel = depth >> 3;
switch (depth) {
case 8:
bytes_per_pixel = IGS_EXT_SEQ_8BPP;
break;
case 15:
bytes_per_pixel = IGS_EXT_SEQ_15BPP; /* 5-5-5 */
break;
case 16:
bytes_per_pixel = IGS_EXT_SEQ_16BPP; /* 5-6-5 */
break;
case 24:
bytes_per_pixel = IGS_EXT_SEQ_24BPP; /* 8-8-8 */
break;
case 32:
bytes_per_pixel = IGS_EXT_SEQ_32BPP;
break;
default:
aprint_error("igsfb: unsupported depth (%d), reverting"
" to 8 bit\n", depth);
depth = 8;
bytes_per_pixel = IGS_EXT_SEQ_8BPP;
}
hoffset = (mode->hdisplay >> 3) * bytes_per_pixel;
memfetch = hoffset + 1;
overflow = (((mode->vtotal - 2) & 0x400) >> 10) |
@ -565,16 +588,16 @@ igsfb_set_mode(struct igsfb_devconfig *dc, const struct videomode *mode,
igs_grfx_write(iot, ioh, 0x08, 0xff);
/* crank up memory clock to 95MHz - needed for higher resolutions */
igs_ext_write(iot, ioh, 0xB2, 0x91);
igs_ext_write(iot, ioh, 0xB3, 0x6a);
igs_ext_write(iot, ioh, IGS_EXT_MCLK0, 0x91);
igs_ext_write(iot, ioh, IGS_EXT_MCLK1, 0x6a);
igsfb_freq_latch(dc);
igs_ext_write(iot, ioh, 0x11, overflow);
igs_ext_write(iot, ioh, 0x77, bytes_per_pixel);
igs_ext_write(iot, ioh, IGS_EXT_VOVFL, overflow);
igs_ext_write(iot, ioh, IGS_EXT_SEQ_MISC, bytes_per_pixel);
igs_ext_write(iot, ioh, 0x14, memfetch & 0xff);
igs_ext_write(iot, ioh, 0x15,
((memfetch & 0x300) >> 8) | ((hoffset & 0x300) >> 4));
igs_ext_write(iot, ioh, 0x56, 0x00);
igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL, 0x00);
/* finally set the dot clock */
igsfb_calc_pll(mode->dot_clock, &m, &n, &p, 2047, 255, 7, IGS_MIN_VCO);
@ -584,8 +607,8 @@ igsfb_set_mode(struct igsfb_devconfig *dc, const struct videomode *mode,
(mode->dot_clock > 180000 ? 0x20 : 0);
vclk3 = ((m >> 8) & 0x7) | ((n >> 2) & 0x38) | ((p << 4) & 0x40);
DPRINTF("clk: %02x %02x %02x\n", vclk1, vclk2, vclk3);
igs_ext_write(iot, ioh, 0xB0, vclk1);
igs_ext_write(iot, ioh, 0xB1, vclk2);
igs_ext_write(iot, ioh, IGS_EXT_VCLK0, vclk1);
igs_ext_write(iot, ioh, IGS_EXT_VCLK1, vclk2);
igs_ext_write(iot, ioh, 0xBA, vclk3);
igsfb_freq_latch(dc);
DPRINTF("clock: %d\n", IGS_CLOCK(m, n, p));