Date: Sun, 8 May 2005 04:49:40 GMT From: Marcel Moolenaar <marcel@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 76673 for review Message-ID: <200505080449.j484nem3032374@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=76673 Change 76673 by marcel@marcel_nfs on 2005/05/08 04:49:02 Initialization step 1: disable sync signals Affected files ... .. //depot/projects/tty/sys/dev/vga/vga.c#5 edit Differences ... ==== //depot/projects/tty/sys/dev/vga/vga.c#5 (text+ko) ==== @@ -37,6 +37,12 @@ #include <dev/ic/vga.h> #include <dev/vga/vga.h> +/* Convenience macros. */ +#define CRTC_READ(sc, reg) \ + bus_space_read_1(sc->vga_crtc.bst, sc->vga_crtc.bsh, reg) +#define CRTC_WRITE(sc, reg, val) \ + bus_space_write_1(sc->vga_crtc.bst, sc->vga_crtc.bsh, reg, val) + struct vga_softc vga_console; devclass_t vga_devclass; char vga_device_name[] = "vga"; @@ -52,6 +58,7 @@ vga_init(struct vga_softc *sc) { int error; + uint8_t x; sc->vga_screen = sc->vga_fb; error = bus_space_subregion(sc->vga_fb.bst, sc->vga_fb.bsh, @@ -59,6 +66,11 @@ if (error) return (error); + /* Disable the sync. signals. */ + CRTC_WRITE(sc, VGA_CRTC_ADDRESS, VGA_CRTC_MODE_CONTROL); + x = CRTC_READ(sc, VGA_CRTC_DATA); + CRTC_WRITE(sc, VGA_CRTC_DATA, x & ~VGA_CRTC_MC_HR); + /* TODO -- set the VGA adapter in 640x480x16 mode */ sc->vga_enable = 1;
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