Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / video / fbdev / via / via_aux_ch7301.c

diff --git a/kernel/drivers/video/fbdev/via/via_aux_ch7301.c b/kernel/drivers/video/fbdev/via/via_aux_ch7301.c
new file mode 100644 (file)
index 0000000..1cbe503
--- /dev/null
+++ b/kernel/drivers/video/fbdev/via/via_aux_ch7301.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
+ *
+ * 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 Chrontel CH7301 DVI Transmitter
+ */
+
+#include <linux/slab.h>
+#include "via_aux.h"
+
+
+static const char *name = "CH7301 DVI Transmitter";
+
+
+static void probe(struct via_aux_bus *bus, u8 addr)
+{
+       struct via_aux_drv drv = {
+               .bus    =       bus,
+               .addr   =       addr,
+               .name   =       name};
+       u8 tmp;
+
+       if (!via_aux_read(&drv, 0x4B, &tmp, 1) || tmp != 0x17)
+               return;
+
+       printk(KERN_INFO "viafb: Found %s at address 0x%x\n", name, addr);
+       via_aux_add(&drv);
+}
+
+void via_aux_ch7301_probe(struct via_aux_bus *bus)
+{
+       probe(bus, 0x75);
+       probe(bus, 0x76);
+}