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authorDave Airlie <airlied@linux.ie>2007-04-05 11:21:06 +1000
committerDave Airlie <airlied@linux.ie>2007-04-05 11:21:06 +1000
commit52f9028c84baea81230dc673b756552e8e90aecd (patch)
tree0a08cc634a6202c3e110feef802344d3a39b1e3c /linux-core/intel_modes.c
parent8fe8793a0fdf4e6082a0f0b0fc4650f171737356 (diff)
Initial import of modesetting for intel driver in DRM
Diffstat (limited to 'linux-core/intel_modes.c')
-rw-r--r--linux-core/intel_modes.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/linux-core/intel_modes.c b/linux-core/intel_modes.c
new file mode 100644
index 00000000..0e56147d
--- /dev/null
+++ b/linux-core/intel_modes.c
@@ -0,0 +1,49 @@
+#include <linux/i2c.h>
+#include <linux/fb.h>
+#include "drmP.h"
+#include "intel_drv.h"
+
+/**
+ * intel_ddc_probe
+ *
+ */
+bool intel_ddc_probe(struct drm_output *output)
+{
+ struct intel_output *intel_output = output->driver_private;
+ 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(&intel_output->ddc_bus->adapter, msgs, 2);
+ if (ret == 2)
+ return true;
+
+ return false;
+}
+
+/**
+ * intel_ddc_get_modes - get modelist from monitor
+ * @output: DRM output device to use
+ *
+ * Fetch the EDID information from @output using the DDC bus.
+ */
+int intel_ddc_get_modes(struct drm_output *output)
+{
+ struct intel_output *intel_output = output->driver_private;
+
+ return drm_add_edid_modes(output, &intel_output->ddc_bus->adapter);
+}