drm/i915: Fix SDVO CREATE_PREFERRED_INPUT_TIMING command

This brings fix commit acde0ef683 from 2D driver.

Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

2 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 31cd9b835aa4..ea311c7241c2 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -589,9 +589,12 @@ intel_sdvo_create_preferred_input_timing(struct intel_output *output,
         struct intel_sdvo_preferred_input_timing_args args;
         uint8_t status;
 
+        memset(&args, 0, sizeof(args));
         args.clock = clock;
         args.width = width;
         args.height = height;
+        args.interlace = 0;
+        args.scaled = 0;
         intel_sdvo_write_cmd(output, SDVO_CMD_CREATE_PREFERRED_INPUT_TIMING,
                              &args, sizeof(args));
         status = intel_sdvo_read_response(output, NULL, 0);
diff --git a/drivers/gpu/drm/i915/intel_sdvo_regs.h b/drivers/gpu/drm/i915/intel_sdvo_regs.h
index 1117b9c151a6..193938b7d7f9 100644
--- a/drivers/gpu/drm/i915/intel_sdvo_regs.h
+++ b/drivers/gpu/drm/i915/intel_sdvo_regs.h
@@ -100,6 +100,9 @@ struct intel_sdvo_preferred_input_timing_args {
     u16 clock;
     u16 width;
     u16 height;
+    u8  interlace:1;
+    u8  scaled:1;
+    u8  pad:6;
 } __attribute__((packed));
 
 /* I2C registers for SDVO */