From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- drivers/video/fbdev/via/via_aux_vt1636.c | 46 ++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 drivers/video/fbdev/via/via_aux_vt1636.c (limited to 'drivers/video/fbdev/via/via_aux_vt1636.c') diff --git a/drivers/video/fbdev/via/via_aux_vt1636.c b/drivers/video/fbdev/via/via_aux_vt1636.c new file mode 100644 index 000000000..2b10bc21a --- /dev/null +++ b/drivers/video/fbdev/via/via_aux_vt1636.c @@ -0,0 +1,46 @@ +/* + * Copyright 2011 Florian Tobias Schandinat + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation; + * either version 2, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even + * the implied warranty of MERCHANTABILITY or FITNESS FOR + * A PARTICULAR PURPOSE.See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ +/* + * driver for VIA VT1636 LVDS Transmitter + */ + +#include +#include "via_aux.h" + + +static const char *name = "VT1636 LVDS Transmitter"; + + +void via_aux_vt1636_probe(struct via_aux_bus *bus) +{ + struct via_aux_drv drv = { + .bus = bus, + .addr = 0x40, + .name = name}; + /* check vendor id and device id */ + const u8 id[] = {0x06, 0x11, 0x45, 0x33}, len = ARRAY_SIZE(id); + u8 tmp[ARRAY_SIZE(id)]; + + if (!via_aux_read(&drv, 0x00, tmp, len) || memcmp(id, tmp, len)) + return; + + printk(KERN_INFO "viafb: Found %s\n", name); + via_aux_add(&drv); +} -- cgit v1.2.3