Messages in this thread Patch in this message | | | Date | Sat, 25 Feb 2006 01:20:30 +0100 | From | Samuel Thibault <> | Subject | Re: Fw: [Bugme-new] [Bug 6106] New: EGA problem since 2.6.14 |
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Hi,
Here is another fixup for EGA cursor resize function.
This corrects cursor resize on ega boards: registers are write-only, so we shouldn't even try to read them. And on ega, 31/30 produces a flat cursor. Using 31/31 is better: except with 32 pixels high fonts, it shouldn't show up.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
--- drivers/video/console/vgacon.c.git 2006-02-24 10:43:25.000000000 +0100 +++ drivers/video/console/vgacon.c 2006-02-25 01:17:17.000000000 +0100 @@ -433,17 +433,22 @@ static void vgacon_set_cursor_size(int x cursor_size_lastto = to; spin_lock_irqsave(&vga_lock, flags); - outb_p(0x0a, vga_video_port_reg); /* Cursor start */ - curs = inb_p(vga_video_port_val); - outb_p(0x0b, vga_video_port_reg); /* Cursor end */ - cure = inb_p(vga_video_port_val); + if (vga_video_type >= VIDEO_TYPE_VGAC) { + outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg); + curs = inb_p(vga_video_port_val); + outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg); + cure = inb_p(vga_video_port_val); + } else { + curs = 0; + cure = 0; + } curs = (curs & 0xc0) | from; cure = (cure & 0xe0) | to; - outb_p(0x0a, vga_video_port_reg); /* Cursor start */ + outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg); outb_p(curs, vga_video_port_val); - outb_p(0x0b, vga_video_port_reg); /* Cursor end */ + outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg); outb_p(cure, vga_video_port_val); spin_unlock_irqrestore(&vga_lock, flags); } @@ -455,7 +460,10 @@ static void vgacon_cursor(struct vc_data switch (mode) { case CM_ERASE: write_vga(14, (c->vc_pos - vga_vram_base) / 2); - vgacon_set_cursor_size(c->vc_x, 31, 30); + if (vga_video_type >= VIDEO_TYPE_VGAC) + vgacon_set_cursor_size(c->vc_x, 31, 30); + else + vgacon_set_cursor_size(c->vc_x, 31, 31); break; case CM_MOVE: @@ -493,7 +501,10 @@ static void vgacon_cursor(struct vc_data 10 ? 1 : 2)); break; case CUR_NONE: - vgacon_set_cursor_size(c->vc_x, 31, 30); + if (vga_video_type >= VIDEO_TYPE_VGAC) + vgacon_set_cursor_size(c->vc_x, 31, 30); + else + vgacon_set_cursor_size(c->vc_x, 31, 31); break; default: vgacon_set_cursor_size(c->vc_x, 1, - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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