Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / gma500 / psb_intel_modes.c

diff --git a/kernel/drivers/gpu/drm/gma500/psb_intel_modes.c b/kernel/drivers/gpu/drm/gma500/psb_intel_modes.c
new file mode 100644 (file)
index 0000000..4fca0d6
--- /dev/null
+++ b/kernel/drivers/gpu/drm/gma500/psb_intel_modes.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2007 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 i2c_adapter *adapter)
+{
+       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(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 drm_connector *connector,
+                           struct i2c_adapter *adapter)
+{
+       struct edid *edid;
+       int ret = 0;
+
+       edid = drm_get_edid(connector, adapter);
+       if (edid) {
+               drm_mode_connector_update_edid_property(connector, edid);
+               ret = drm_add_edid_modes(connector, edid);
+               kfree(edid);
+       }
+       return ret;
+}