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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_DRM_MODE_H_
#define ANDROID_DRM_MODE_H_
#include <stdint.h>
#include <xf86drmMode.h>
#include <ratio>
#include <string>
// Alternative definitions(alias) of DRM modes and flags for VRR.
// The kernel contains corresponding defines that MUST align with those specified here..
#define DRM_MODE_TYPE_VRR DRM_MODE_TYPE_USERDEF
#define DRM_MODE_FLAG_NS DRM_MODE_FLAG_CLKDIV2
#define DRM_MODE_FLAG_TE_FREQ_X1 DRM_MODE_FLAG_PHSYNC
#define DRM_MODE_FLAG_TE_FREQ_X2 DRM_MODE_FLAG_NHSYNC
#define DRM_MODE_FLAG_TE_FREQ_X4 DRM_MODE_FLAG_PVSYNC
// BTS needs to take operation rate into account
#define DRM_MODE_FLAG_BTS_OP_RATE DRM_MODE_FLAG_NVSYNC
#define PANEL_REFRESH_CTRL_FI (1 << 0)
#define PANEL_REFRESH_CTRL_IDLE (1 << 1)
namespace android {
class DrmMode {
public:
DrmMode() = default;
DrmMode(drmModeModeInfoPtr m);
bool operator==(const drmModeModeInfo &m) const;
void ToDrmModeModeInfo(drm_mode_modeinfo *m) const;
inline bool is_vrr_mode() const { return (type_ & DRM_MODE_TYPE_VRR); };
inline bool is_ns_mode() const { return (flags_ & DRM_MODE_FLAG_NS); };
uint32_t id() const;
void set_id(uint32_t id);
uint32_t clock() const;
uint32_t h_display() const;
uint32_t h_sync_start() const;
uint32_t h_sync_end() const;
uint32_t h_total() const;
uint32_t h_skew() const;
uint32_t v_display() const;
uint32_t v_sync_start() const;
uint32_t v_sync_end() const;
uint32_t v_total() const;
uint32_t v_scan() const;
float v_refresh() const;
float te_frequency() const;
// Convert frequency to period, with the default unit being nanoseconds.
float v_period(int64_t unit = std::nano::den) const;
float te_period(int64_t unit = std::nano::den) const;
bool is_operation_rate_to_bts() const;
uint32_t flags() const;
uint32_t type() const;
std::string name() const;
private:
uint32_t id_ = 0;
uint32_t clock_ = 0;
uint32_t h_display_ = 0;
uint32_t h_sync_start_ = 0;
uint32_t h_sync_end_ = 0;
uint32_t h_total_ = 0;
uint32_t h_skew_ = 0;
uint32_t v_display_ = 0;
uint32_t v_sync_start_ = 0;
uint32_t v_sync_end_ = 0;
uint32_t v_total_ = 0;
uint32_t v_scan_ = 0;
uint32_t v_refresh_ = 0;
uint32_t flags_ = 0;
uint32_t type_ = 0;
std::string name_;
};
} // namespace android
#endif // ANDROID_DRM_MODE_H_
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