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      1 /*
      2 * Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
      3 *
      4 * Redistribution and use in source and binary forms, with or without
      5 * modification, are permitted provided that the following conditions are
      6 * met:
      7 *     * Redistributions of source code must retain the above copyright
      8 *       notice, this list of conditions and the following disclaimer.
      9 *     * Redistributions in binary form must reproduce the above
     10 *       copyright notice, this list of conditions and the following
     11 *       disclaimer in the documentation and/or other materials provided
     12 *       with the distribution.
     13 *     * Neither the name of The Linux Foundation nor the names of its
     14 *       contributors may be used to endorse or promote products derived
     15 *       from this software without specific prior written permission.
     16 *
     17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 */
     29 
     30 #ifndef __HW_SCALE_DRM_H__
     31 #define __HW_SCALE_DRM_H__
     32 
     33 #include <stdint.h>
     34 #include <stdlib.h>
     35 #include <drm.h>
     36 // The 3 headers above are a workaround to prevent kernel drm.h from being used that has the
     37 // "virtual" keyword used for a variable. In future replace libdrm version drm.h with kernel
     38 // version drm/drm.h
     39 #include <drm/sde_drm.h>
     40 #include <private/hw_info_types.h>
     41 
     42 namespace sdm {
     43 
     44 struct SDEScaler {
     45   struct sde_drm_scaler_v2 scaler_v2 = {};
     46   // More here, maybe in a union
     47 };
     48 
     49 class HWScaleDRM {
     50  public:
     51   enum class Version { V2 };
     52   explicit HWScaleDRM(Version v) : version_(v) {}
     53   void SetPlaneScaler(const HWScaleData &scale, SDEScaler *scaler);
     54 
     55  private:
     56   void SetPlaneScalerV2(const HWScaleData &scale, sde_drm_scaler_v2 *scaler_v2);
     57 
     58   Version version_ = Version::V2;
     59 };
     60 
     61 }  // namespace sdm
     62 
     63 #endif  // __HW_SCALE_DRM_H__
     64