1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/video/fbdev/via/via_aux.c b/drivers/video/fbdev/via/via_aux.c
new file mode 100644
index 000000000..902191ddd
--- /dev/null
+++ b/drivers/video/fbdev/via/via_aux.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
+ */
+/*
+ * infrastructure for devices connected via I2C
+ */
+
+#include <linux/slab.h>
+#include "via_aux.h"
+
+
+struct via_aux_bus *via_aux_probe(struct i2c_adapter *adap)
+{
+	struct via_aux_bus *bus;
+
+	if (!adap)
+		return NULL;
+
+	bus = kmalloc(sizeof(*bus), GFP_KERNEL);
+	if (!bus)
+		return NULL;
+
+	bus->adap = adap;
+	INIT_LIST_HEAD(&bus->drivers);
+
+	via_aux_edid_probe(bus);
+	via_aux_vt1636_probe(bus);
+	via_aux_vt1632_probe(bus);
+	via_aux_vt1631_probe(bus);
+	via_aux_vt1625_probe(bus);
+	via_aux_vt1622_probe(bus);
+	via_aux_vt1621_probe(bus);
+	via_aux_sii164_probe(bus);
+	via_aux_ch7301_probe(bus);
+
+	return bus;
+}
+
+void via_aux_free(struct via_aux_bus *bus)
+{
+	struct via_aux_drv *pos, *n;
+
+	if (!bus)
+		return;
+
+	list_for_each_entry_safe(pos, n, &bus->drivers, chain) {
+		if (pos->cleanup)
+			pos->cleanup(pos);
+
+		list_del(&pos->chain);
+		kfree(pos->data);
+		kfree(pos);
+	}
+
+	kfree(bus);
+}
+
+const struct fb_videomode *via_aux_get_preferred_mode(struct via_aux_bus *bus)
+{
+	struct via_aux_drv *pos;
+	const struct fb_videomode *mode = NULL;
+
+	if (!bus)
+		return NULL;
+
+	list_for_each_entry(pos, &bus->drivers, chain) {
+		if (pos->get_preferred_mode)
+			mode = pos->get_preferred_mode(pos);
+	}
+
+	return mode;
+}