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path: root/drivers/video/nvidia/nv_of.c
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Diffstat (limited to 'drivers/video/nvidia/nv_of.c')
-rw-r--r--drivers/video/nvidia/nv_of.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/video/nvidia/nv_of.c b/drivers/video/nvidia/nv_of.c
new file mode 100644
index 000000000000..7d12eb85310d
--- /dev/null
+++ b/drivers/video/nvidia/nv_of.c
@@ -0,0 +1,59 @@
+/*
+ * linux/drivers/video/nvidia/nv_of.c
+ *
+ * Copyright 2004 Antonino A. Daplas <adaplas @pol.net>
+ *
+ * Based on rivafb-i2c.c
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/fb.h>
+
+#include <asm/io.h>
+
+#include <asm/prom.h>
+#include <asm/pci-bridge.h>
+
+#include "nv_type.h"
+#include "nv_local.h"
+#include "nv_proto.h"
+
+void nvidia_create_i2c_busses(struct nvidia_par *par) {}
+void nvidia_delete_i2c_busses(struct nvidia_par *par) {}
+
+int nvidia_probe_i2c_connector(struct nvidia_par *par, int conn, u8 **out_edid)
+{
+ struct device_node *dp;
+ unsigned char *pedid = NULL;
+ unsigned char *disptype = NULL;
+ static char *propnames[] = {
+ "DFP,EDID", "LCD,EDID", "EDID", "EDID1", "EDID,B", "EDID,A", NULL };
+ int i;
+
+ dp = pci_device_to_OF_node(par->pci_dev);
+ for (; dp != NULL; dp = dp->child) {
+ disptype = (unsigned char *)get_property(dp, "display-type", NULL);
+ if (disptype == NULL)
+ continue;
+ if (strncmp(disptype, "LCD", 3) != 0)
+ continue;
+ for (i = 0; propnames[i] != NULL; ++i) {
+ pedid = (unsigned char *)
+ get_property(dp, propnames[i], NULL);
+ if (pedid != NULL) {
+ *out_edid = pedid;
+ return 0;
+ }
+ }
+ }
+ return 1;
+}