| // Copyright 2024 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/graphics/display/lib/designware-dsi/dpi-video-timing.h" |
| |
| #include <gtest/gtest.h> |
| |
| #include "src/graphics/display/lib/api-types/cpp/display-timing.h" |
| |
| namespace designware_dsi { |
| |
| namespace { |
| |
| TEST(DpiVideoTimingTest, Valid) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| // Calculated so that the frame rate is 30 fps. |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_TRUE(kTiming.IsValid()); |
| |
| static constexpr int64_t kValidDphyDataLaneBytesPerSecondMin = 61682040; |
| EXPECT_TRUE(IsValidDpiVideoTiming(kTiming, kValidDphyDataLaneBytesPerSecondMin)); |
| |
| static constexpr int64_t kValidDphyDataLaneBytesPerSecond2 = int64_t{61682040} * 2; |
| EXPECT_TRUE(IsValidDpiVideoTiming(kTiming, kValidDphyDataLaneBytesPerSecond2)); |
| } |
| |
| TEST(DpiVideoTimingTest, ValidWhenDataLaneBytesPerSecondIsMaximum) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x044, |
| .horizontal_front_porch_px = 0x003, |
| .horizontal_sync_width_px = 0x002, |
| .horizontal_back_porch_px = 0x001, |
| .vertical_active_lines = 0x055, |
| .vertical_front_porch_lines = 0x006, |
| .vertical_sync_width_lines = 0x007, |
| .vertical_back_porch_lines = 0x008, |
| // Calculated so that the frame rate is 60 fps. |
| .pixel_clock_frequency_hz = 470640, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| static constexpr int64_t kValidDphyDataLaneBytesPerSecondMax = |
| kTiming.pixel_clock_frequency_hz * 256; |
| EXPECT_TRUE(IsValidDpiVideoTiming(kTiming, kValidDphyDataLaneBytesPerSecondMax)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, DisplayTimingIsNotValid) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = -1, // Invalid |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_FALSE(kTiming.IsValid()); |
| |
| static constexpr int64_t kValidDphyDataLaneBytesPerSecond = 61682040; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kValidDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, InterlacedFrame) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kInterlaced, // Unsupported |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_TRUE(kTiming.IsValid()); |
| |
| static constexpr int64_t kValidDphyDataLaneBytesPerSecond = 61682040; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kValidDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, PixelRepeated) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 1, // Unsupported |
| }; |
| |
| EXPECT_TRUE(kTiming.IsValid()); |
| |
| static constexpr int64_t kValidDphyDataLaneBytesPerSecond = 61682040; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kValidDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, PixelClockFrequencyNotDivisibleByDataLaneBytesPerSecond) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| // `kTiming.pixel_clock_frequency_hz` is not divisible by |
| // `kDphyDataLaneBytesPerSecond`. |
| static constexpr int64_t kDphyDataLaneBytesPerSecond = 61682041; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, ClockFrequencyRatioLowerThanMinimum) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| static constexpr int64_t kDphyDataLaneBytesPerSecondOverlyLow = int64_t{61682040} * -1; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kDphyDataLaneBytesPerSecondOverlyLow)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, ClockFrequencyRatioExceedsMaximum) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| static constexpr int64_t kDphyDataLaneBytesPerSecondOverlyHigh = int64_t{61682040} * 257; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kDphyDataLaneBytesPerSecondOverlyHigh)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, HorizontalBackPorchExceedsLimit) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x1000, // Exceeds the size limit |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_GT(kTiming.horizontal_back_porch_px, kMaxHorizontalBackPorchPx); |
| |
| static constexpr int64_t kDphyDataLaneBytesPerSecond = 61682040; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, HorizontalSyncWidthExceedsLimit) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x1000, // Exceeds the size limit |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_GT(kTiming.horizontal_sync_width_px, kMaxHorizontalSyncWidthPx); |
| |
| static constexpr int64_t kDphyDataLaneBytesPerSecond = 61682040; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, HorizontalTotalExceedsLimit) { |
| static constexpr display::DisplayTiming kTiming = { |
| // Picked so that horizontal_total_px() equals to 0x8000. |
| .horizontal_active_px = 0x7f9a, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| // Exceeds the size limit of horizontal_total_px(). |
| EXPECT_EQ(kTiming.horizontal_total_px(), 0x8000); |
| EXPECT_GT(kTiming.horizontal_total_px(), kMaxHorizontalTotalPx); |
| |
| static constexpr int64_t kDphyDataLaneBytesPerSecond = 61682040; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, VerticalActiveExceedsLimit) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x4000, // Exceeds the limit |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_GT(kTiming.vertical_active_lines, kMaxVerticalActiveLines); |
| |
| static constexpr int64_t kDphyDataLaneBytesPerSecond = 61682040; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, VerticalFrontPorchExceedsLimit) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x400, // Exceeds the limit |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_GT(kTiming.vertical_front_porch_lines, kMaxVerticalFrontPorchLines); |
| |
| static constexpr int64_t kDphyDataLaneBytesPerSecond = 61682040; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, VerticalSyncWidthExceedsLimit) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x400, // Exceeds the limit |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_GT(kTiming.vertical_sync_width_lines, kMaxVerticalSyncWidthLines); |
| |
| static constexpr int64_t kDphyDataLaneBytesPerSecond = 61682040; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, VerticalBackPorchExceedsLimit) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x400, // Exceeds the limit |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_GT(kTiming.vertical_back_porch_lines, kMaxVerticalBackPorchLines); |
| |
| static constexpr int64_t kDphyDataLaneBytesPerSecond = 61682040; |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, HorizontalSyncTimeLaneByteClockCyclesDoesNotExceedMaximum) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x400, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| static constexpr int64_t kValidDphyDataLaneBytesPerSecond = kTiming.pixel_clock_frequency_hz * 3; |
| const int32_t horizontal_sync_time_lane_byte_clock_cycles = DpiPixelToDphyLaneByteClockCycle( |
| kTiming.horizontal_sync_width_px, kTiming.pixel_clock_frequency_hz, |
| kValidDphyDataLaneBytesPerSecond); |
| EXPECT_LE(horizontal_sync_time_lane_byte_clock_cycles, kMaxHorizontalSyncTimeLaneByteClockCycles); |
| EXPECT_TRUE(IsValidDpiVideoTiming(kTiming, kValidDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, HorizontalSyncTimeLaneByteClockCyclesExceedsMaximum) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x400, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| static constexpr int64_t kInvalidDphyDataLaneBytesPerSecond = |
| kTiming.pixel_clock_frequency_hz * 4; |
| const int32_t horizontal_sync_time_lane_byte_clock_cycles = DpiPixelToDphyLaneByteClockCycle( |
| kTiming.horizontal_sync_width_px, kTiming.pixel_clock_frequency_hz, |
| kInvalidDphyDataLaneBytesPerSecond); |
| EXPECT_GT(horizontal_sync_time_lane_byte_clock_cycles, kMaxHorizontalSyncTimeLaneByteClockCycles); |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kInvalidDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, HorizontalBackPorchTimeLaneByteClockCyclesDoesNotExceedMaximum) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x400, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| static constexpr int64_t kValidDphyDataLaneBytesPerSecond = kTiming.pixel_clock_frequency_hz * 3; |
| const int32_t horizontal_back_porch_time_lane_byte_clock_cycles = |
| DpiPixelToDphyLaneByteClockCycle(kTiming.horizontal_back_porch_px, |
| kTiming.pixel_clock_frequency_hz, |
| kValidDphyDataLaneBytesPerSecond); |
| EXPECT_LE(horizontal_back_porch_time_lane_byte_clock_cycles, |
| kMaxHorizontalBackPorchTimeLaneByteClockCycles); |
| EXPECT_TRUE(IsValidDpiVideoTiming(kTiming, kValidDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, HorizontalBackPorchTimeLaneByteClockCyclesExceedsMaximum) { |
| static constexpr display::DisplayTiming kTiming = { |
| .horizontal_active_px = 0x444, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x400, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| static constexpr int64_t kInvalidDphyDataLaneBytesPerSecond = |
| kTiming.pixel_clock_frequency_hz * 4; |
| const int32_t horizontal_back_porch_time_lane_byte_clock_cycles = |
| DpiPixelToDphyLaneByteClockCycle(kTiming.horizontal_back_porch_px, |
| kTiming.pixel_clock_frequency_hz, |
| kInvalidDphyDataLaneBytesPerSecond); |
| EXPECT_GT(horizontal_back_porch_time_lane_byte_clock_cycles, |
| kMaxHorizontalBackPorchTimeLaneByteClockCycles); |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kInvalidDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, HorizontalTotalTimeLaneByteClockCyclesDoesNotExceedMaximum) { |
| static constexpr display::DisplayTiming kTiming = { |
| // Picked so that horizontal_total_px() equals to 0x1000. |
| .horizontal_active_px = 0xf9a, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_EQ(kTiming.horizontal_total_px(), 0x1000); |
| |
| static constexpr int64_t kValidDphyDataLaneBytesPerSecond = kTiming.pixel_clock_frequency_hz * 7; |
| const int32_t horizontal_total_time_lane_byte_clock_cycles = DpiPixelToDphyLaneByteClockCycle( |
| kTiming.horizontal_total_px(), kTiming.pixel_clock_frequency_hz, |
| kValidDphyDataLaneBytesPerSecond); |
| EXPECT_LE(horizontal_total_time_lane_byte_clock_cycles, |
| kMaxHorizontalTotalTimeLaneByteClockCycles); |
| EXPECT_TRUE(IsValidDpiVideoTiming(kTiming, kValidDphyDataLaneBytesPerSecond)); |
| } |
| |
| TEST(InvalidDpiVideoTimingTest, HorizontalTotalTimeLaneByteClockCyclesExceedsMaximum) { |
| static constexpr display::DisplayTiming kTiming = { |
| // Picked so that horizontal_total_px() equals to 0x1000. |
| .horizontal_active_px = 0xf9a, |
| .horizontal_front_porch_px = 0x033, |
| .horizontal_sync_width_px = 0x022, |
| .horizontal_back_porch_px = 0x011, |
| .vertical_active_lines = 0x555, |
| .vertical_front_porch_lines = 0x066, |
| .vertical_sync_width_lines = 0x077, |
| .vertical_back_porch_lines = 0x088, |
| .pixel_clock_frequency_hz = 61682040, |
| .fields_per_frame = display::FieldsPerFrame::kProgressive, |
| .hsync_polarity = display::SyncPolarity::kNegative, |
| .vsync_polarity = display::SyncPolarity::kNegative, |
| .vblank_alternates = false, |
| .pixel_repetition = 0, |
| }; |
| |
| EXPECT_EQ(kTiming.horizontal_total_px(), 0x1000); |
| |
| static constexpr int64_t kInvalidDphyDataLaneBytesPerSecond = |
| kTiming.pixel_clock_frequency_hz * 8; |
| const int32_t horizontal_total_time_lane_byte_clock_cycles = DpiPixelToDphyLaneByteClockCycle( |
| kTiming.horizontal_total_px(), kTiming.pixel_clock_frequency_hz, |
| kInvalidDphyDataLaneBytesPerSecond); |
| EXPECT_GT(horizontal_total_time_lane_byte_clock_cycles, |
| kMaxHorizontalTotalTimeLaneByteClockCycles); |
| EXPECT_FALSE(IsValidDpiVideoTiming(kTiming, kInvalidDphyDataLaneBytesPerSecond)); |
| } |
| |
| } // namespace |
| |
| } // namespace designware_dsi |
