1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/staging/cdv/drv/psb_intel_modes.c b/drivers/staging/cdv/drv/psb_intel_modes.c
new file mode 100644
index 000000000000..00125cdcf76b
--- /dev/null
+++ b/drivers/staging/cdv/drv/psb_intel_modes.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2011 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; 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., 
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authers: Jesse Barnes <jesse.barnes@intel.com>
+ */
+
+#include <linux/i2c.h>
+#include <linux/fb.h>
+#include <drm/drmP.h>
+#include "psb_intel_drv.h"
+
+/**
+ * psb_intel_ddc_probe
+ *
+ */
+bool psb_intel_ddc_probe(struct psb_intel_output *psb_intel_output)
+{
+	u8 out_buf[] = { 0x0, 0x0 };
+	u8 buf[2];
+	int ret;
+	struct i2c_msg msgs[] = {
+		{
+		 .addr = 0x50,
+		 .flags = 0,
+		 .len = 1,
+		 .buf = out_buf,
+		 },
+		{
+		 .addr = 0x50,
+		 .flags = I2C_M_RD,
+		 .len = 1,
+		 .buf = buf,
+		 }
+	};
+
+	ret = i2c_transfer(&psb_intel_output->ddc_bus->adapter, msgs, 2);
+	if (ret == 2)
+		return true;
+
+	return false;
+}
+
+/**
+ * psb_intel_ddc_get_modes - get modelist from monitor
+ * @connector: DRM connector device to use
+ *
+ * Fetch the EDID information from @connector using the DDC bus.
+ */
+int psb_intel_ddc_get_modes(struct psb_intel_output *psb_intel_output)
+{
+	struct edid *edid;
+	int ret = 0;
+
+	edid =
+	    drm_get_edid(&psb_intel_output->base,
+			 &psb_intel_output->ddc_bus->adapter);
+	if (edid) {
+		drm_mode_connector_update_edid_property(&psb_intel_output->
+							base, edid);
+		ret = drm_add_edid_modes(&psb_intel_output->base, edid);
+		kfree(edid);
+	}
+	return ret;
+}