From nobody Wed Feb 11 06:31:22 2026 Received: from us-smtp-delivery-44.mimecast.com (us-smtp-delivery-44.mimecast.com [207.211.30.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 72CA912C528 for ; Mon, 26 Feb 2024 15:22:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=207.211.30.44 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708960959; cv=none; b=edr8QLnMiLRkfW1y4VR3SpScVH1lbfTCOafmMoGT9M30od4aW8/y7kQPRnM6DLWUwrN46XYX1DprHR0YJC3WGC7mZFcg4Xzya9oJRiDQHhep5vaV1qvZqV8GWH6f9qtCBx7nMzBD+EjxtnDYSwYdLzUGDU/i/5MRHUIk9DB0h6Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708960959; c=relaxed/simple; bh=jJGWS4fls7FxdD0C7TzlrnH9rCl6Eia5MnOtRY3vNvs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=FdlwwKQwxyz6VtDgSjxNiUeTQuTFDK+YFba2RrBNTQMXnF/Xw7vQLvXZSQVH67rCaNaTlTdU+oGhp/C/9VCNe8AX1RHys53b1LSh3/m3UM1/k69+W34nIMhBZlJ/MlKL+HTOUdEJFg3CsBzLWrrA6wZahKAmYg785rz/rd+ka2c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org; spf=fail smtp.mailfrom=kernel.org; arc=none smtp.client-ip=207.211.30.44 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=kernel.org Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-621-A_t5tt-EMT2pGOjzsrEoTQ-1; Mon, 26 Feb 2024 10:21:26 -0500 X-MC-Unique: A_t5tt-EMT2pGOjzsrEoTQ-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id B5CE71C106A1; Mon, 26 Feb 2024 15:21:25 +0000 (UTC) Received: from gentoo.redhat.com (unknown [10.45.224.64]) by smtp.corp.redhat.com (Postfix) with ESMTP id 04798492BD7; Mon, 26 Feb 2024 15:21:24 +0000 (UTC) From: Alexey Gladkov To: LKML , Greg Kroah-Hartman , Jiri Slaby Cc: linux-api@vger.kernel.org Subject: [RFC PATCH v2 4/5] vgacon: Allow to get max font width and height Date: Mon, 26 Feb 2024 16:21:13 +0100 Message-ID: <6e8da86c7c8aa955158e8fec048a2c89cba4b592.1708960303.git.legion@kernel.org> In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.10 Content-Type: text/plain; charset="utf-8" Signed-off-by: Alexey Gladkov --- drivers/video/console/vgacon.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c index 8ef1579fa57f..b75d31ef3353 100644 --- a/drivers/video/console/vgacon.c +++ b/drivers/video/console/vgacon.c @@ -61,6 +61,10 @@ static struct vgastate vgastate; #define BLANK 0x0020 =20 #define VGA_FONTWIDTH 8 /* VGA does not support fontwidths !=3D 8 = */ + +#define VGACON_MAX_FONT_WIDTH VGA_FONTWIDTH +#define VGACON_MAX_FONT_HEIGHT 32 + /* * Interface used by the world */ @@ -1013,6 +1017,19 @@ static int vgacon_adjust_height(struct vc_data *vc, = unsigned fontheight) return 0; } =20 +static int vgacon_font_info(struct vc_data *vc, struct console_font_info *= info) +{ + info->min_width =3D VGACON_MAX_FONT_WIDTH; + info->min_height =3D 0; + + info->max_width =3D VGACON_MAX_FONT_WIDTH; + info->max_height =3D VGACON_MAX_FONT_HEIGHT; + + info->flags =3D KD_FONT_INFO_FLAG_LOW_SIZE | KD_FONT_INFO_FLAG_HIGH_SIZE; + + return 0; +} + static int vgacon_font_set(struct vc_data *c, struct console_font *font, unsigned int vpitch, unsigned int flags) { @@ -1022,7 +1039,8 @@ static int vgacon_font_set(struct vc_data *c, struct = console_font *font, if (vga_video_type < VIDEO_TYPE_EGAM) return -EINVAL; =20 - if (font->width !=3D VGA_FONTWIDTH || font->height > 32 || vpitch !=3D 32= || + if (font->width !=3D VGACON_MAX_FONT_WIDTH || + font->height > VGACON_MAX_FONT_HEIGHT || vpitch !=3D 32 || (charcount !=3D 256 && charcount !=3D 512)) return -EINVAL; =20 @@ -1177,6 +1195,7 @@ const struct consw vga_con =3D { .con_scroll =3D vgacon_scroll, .con_switch =3D vgacon_switch, .con_blank =3D vgacon_blank, + .con_font_info =3D vgacon_font_info, .con_font_set =3D vgacon_font_set, .con_font_get =3D vgacon_font_get, .con_resize =3D vgacon_resize, --=20 2.44.0