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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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31
ArmPlatformPkg/Include/Library/LcdPlatformLib.h
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@@ -153,6 +153,14 @@ typedef enum {
LCD_BITS_PER_PIXEL_12_444
} LCD_BPP;
// Display timing settings.
typedef struct {
UINT32 Resolution;
UINT32 Sync;
UINT32 BackPorch;
UINT32 FrontPorch;
} SCAN_TIMINGS;
/** Platform related initialization function.
@param[in] Handle Handle to the LCD device instance.
@@ -228,14 +236,11 @@ LcdPlatformQueryMode (
@param[in] ModeNumber Mode Number.
@param[out] HRes Pointer to horizontal resolution.
@param[out] HSync Pointer to horizontal sync width.
@param[out] HBackPorch Pointer to horizontal back porch.
@param[out] HFrontPorch Pointer to horizontal front porch.
@param[out] VRes Pointer to vertical resolution.
@param[out] VSync Pointer to vertical sync width.
@param[out] VBackPorch Pointer to vertical back porch.
@param[out] VFrontPorch Pointer to vertical front porch.
@param[out] Horizontal Pointer to horizontal timing parameters.
(Resolution, Sync, Back porch, Front porch)
@param[out] Vertical Pointer to vertical timing parameters.
(Resolution, Sync, Back porch, Front porch)
@retval EFI_SUCCESS Display timing information for the requested
mode returned successfully.
@@ -244,14 +249,8 @@ LcdPlatformQueryMode (
EFI_STATUS
LcdPlatformGetTimings (
IN UINT32 ModeNumber,
OUT UINT32* HRes,
OUT UINT32* HSync,
OUT UINT32* HBackPorch,
OUT UINT32* HFrontPorch,
OUT UINT32* VRes,
OUT UINT32* VSync,
OUT UINT32* VBackPorch,
OUT UINT32* VFrontPorch
OUT SCAN_TIMINGS **Horizontal,
OUT SCAN_TIMINGS **Vertical
);
/** Return bits per pixel information for a mode number.