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ArmPlatformPkg: Redefine LcdPlatformGetTimings function

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The LcdPlatformGetTimings interface function takes similar sets of
multiple parameters for horizontal and vertical timings which can be
aggregated in a common data type. This change defines a structure
SCAN_TIMINGS for this which can be used to describe both horizontal and
vertical scan timings, and accordingly redefines the
LcdPlatformGetTiming interface, greatly reducing the amount of data
passed about.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Girish Pathak <girish.pathak@arm.com>
Signed-off-by: Evan Lloyd <evan.lloyd@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
This commit is contained in:
Girish Pathak
2017-09-26 21:15:22 +01:00
committed by Leif Lindholm
parent c18ef81e79
commit 262c88461b
4 changed files with 64 additions and 70 deletions
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43
ArmPlatformPkg/Library/PL111Lcd/PL111Lcd.c
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@@ -84,34 +84,25 @@ LcdSetMode (
)
{
EFI_STATUS Status;
UINT32 HRes;
UINT32 HSync;
UINT32 HBackPorch;
UINT32 HFrontPorch;
UINT32 VRes;
UINT32 VSync;
UINT32 VBackPorch;
UINT32 VFrontPorch;
SCAN_TIMINGS *Horizontal;
SCAN_TIMINGS *Vertical;
UINT32 LcdControl;
LCD_BPP LcdBpp;
// Set the video mode timings and other relevant information
Status = LcdPlatformGetTimings (
ModeNumber,
&HRes,
&HSync,
&HBackPorch,
&HFrontPorch,
&VRes,
&VSync,
&VBackPorch,
&VFrontPorch
&Horizontal,
&Vertical
);
if (EFI_ERROR (Status)) {
ASSERT_EFI_ERROR (Status);
return Status;
}
ASSERT (Horizontal != NULL);
ASSERT (Vertical != NULL);
Status = LcdPlatformGetBpp (ModeNumber, &LcdBpp);
if (EFI_ERROR (Status)) {
ASSERT_EFI_ERROR (Status);
@@ -124,15 +115,29 @@ LcdSetMode (
// Set Timings
MmioWrite32 (
PL111_REG_LCD_TIMING_0,
HOR_AXIS_PANEL (HBackPorch, HFrontPorch, HSync, HRes)
HOR_AXIS_PANEL (
Horizontal->BackPorch,
Horizontal->FrontPorch,
Horizontal->Sync,
Horizontal->Resolution
)
);
MmioWrite32 (
PL111_REG_LCD_TIMING_1,
VER_AXIS_PANEL (VBackPorch, VFrontPorch, VSync, VRes)
VER_AXIS_PANEL (
Vertical->BackPorch,
Vertical->FrontPorch,
Vertical->Sync,
Vertical->Resolution
)
);
MmioWrite32 (
PL111_REG_LCD_TIMING_2,
CLK_SIG_POLARITY (Horizontal->Resolution)
);
MmioWrite32 (PL111_REG_LCD_TIMING_2, CLK_SIG_POLARITY (HRes));
MmioWrite32 (PL111_REG_LCD_TIMING_3, 0);
// PL111_REG_LCD_CONTROL