mirror of https://github.com/acidanthera/audk.git
ArmPlatformPkg: Tidy Lcd code: Updated comments
There is no functional modification in this change some comments are modified and a few new comments are added. This is to prevent mixing formatting changes with functional changes. 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: Leif Lindholm <leif.lindholm@linaro.org>
This commit is contained in:
Girish Pathak
Leif Lindholm
parent
b1b69d2606
commit
4257dfaa61
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@ -1,13 +1,14 @@
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/** @file
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This file implements the Graphics Output protocol for Arm platforms
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Copyright (c) 2011-2018, ARM Ltd. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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Copyright (c) 2011-2018, ARM Ltd. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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@ -22,11 +23,6 @@
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#include "LcdGraphicsOutputDxe.h"
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/** This file implements the Graphics Output protocol on ArmVersatileExpress
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using the Lcd controller
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**/
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//
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// Global variables
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//
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@ -18,9 +18,7 @@
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#define LCD_VRAM_SIZE SIZE_8MB
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//
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// Modes definitions
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//
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#define VGA 0
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#define SVGA 1
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#define XGA 2
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@ -29,9 +27,7 @@
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#define UXGA 5
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#define HD 6
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//
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// VGA Mode: 640 x 480
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//
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#define VGA_H_RES_PIXELS 640
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#define VGA_V_RES_PIXELS 480
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#define VGA_OSC_FREQUENCY 23750000 /* 0x016A6570 */
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@ -44,9 +40,7 @@
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#define VGA_V_FRONT_PORCH ( 3 - 1)
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#define VGA_V_BACK_PORCH ( 13 - 1)
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//
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// SVGA Mode: 800 x 600
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//
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#define SVGA_H_RES_PIXELS 800
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#define SVGA_V_RES_PIXELS 600
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#define SVGA_OSC_FREQUENCY 38250000 /* 0x0247A610 */
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@ -59,9 +53,7 @@
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#define SVGA_V_FRONT_PORCH ( 3 - 1)
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#define SVGA_V_BACK_PORCH ( 17 - 1)
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//
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// XGA Mode: 1024 x 768
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//
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#define XGA_H_RES_PIXELS 1024
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#define XGA_V_RES_PIXELS 768
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#define XGA_OSC_FREQUENCY 63500000 /* 0x03C8EEE0 */
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@ -74,9 +66,7 @@
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#define XGA_V_FRONT_PORCH ( 3 - 1)
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#define XGA_V_BACK_PORCH ( 23 - 1)
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//
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// SXGA Mode: 1280 x 1024
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//
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#define SXGA_H_RES_PIXELS 1280
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#define SXGA_V_RES_PIXELS 1024
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#define SXGA_OSC_FREQUENCY 109000000 /* 0x067F3540 */
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@ -89,9 +79,7 @@
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#define SXGA_V_FRONT_PORCH ( 3 - 1)
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#define SXGA_V_BACK_PORCH ( 29 - 1)
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//
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// WSXGA+ Mode: 1680 x 1050
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//
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#define WSXGA_H_RES_PIXELS 1680
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#define WSXGA_V_RES_PIXELS 1050
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#define WSXGA_OSC_FREQUENCY 147000000 /* 0x08C30AC0 */
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@ -104,9 +92,7 @@
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#define WSXGA_V_FRONT_PORCH ( 4 - 1)
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#define WSXGA_V_BACK_PORCH ( 41 - 1)
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//
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// UXGA Mode: 1600 x 1200
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//
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#define UXGA_H_RES_PIXELS 1600
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#define UXGA_V_RES_PIXELS 1200
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#define UXGA_OSC_FREQUENCY 161000000 /* 0x0998AA40 */
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@ -119,9 +105,7 @@
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#define UXGA_V_FRONT_PORCH ( 3 - 1)
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#define UXGA_V_BACK_PORCH ( 38 - 1)
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//
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// HD Mode: 1920 x 1080
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//
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#define HD_H_RES_PIXELS 1920
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#define HD_V_RES_PIXELS 1080
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#define HD_OSC_FREQUENCY 165000000 /* 0x09D5B340 */
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@ -134,10 +118,7 @@
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#define HD_V_FRONT_PORCH ( 3 - 1)
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#define HD_V_BACK_PORCH ( 32 - 1)
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//
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// Colour Masks
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//
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#define LCD_24BPP_RED_MASK 0x00FF0000
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#define LCD_24BPP_GREEN_MASK 0x0000FF00
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#define LCD_24BPP_BLUE_MASK 0x000000FF
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@ -158,7 +139,7 @@
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#define LCD_12BPP_444_BLUE_MASK 0x0000000F
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#define LCD_12BPP_444_RESERVED_MASK 0x0000F000
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/** The enumeration indexes maps the PL111 LcdBpp values used in the LCD Control
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/** The enumeration maps the PL111 LcdBpp values used in the LCD Control
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Register
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**/
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typedef enum {
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@ -172,33 +153,94 @@ typedef enum {
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LCD_BITS_PER_PIXEL_12_444
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} LCD_BPP;
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/** Platform related initialization function.
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@param[in] Handle Handle to the LCD device instance.
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@retval EFI_SUCCESS Plaform library initialized successfully.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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EFI_STATUS
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LcdPlatformInitializeDisplay (
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IN EFI_HANDLE Handle
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);
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/** Allocate VRAM memory in DRAM for the framebuffer
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(unless it is reserved already).
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The allocated address can be used to set the framebuffer.
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@param[out] VramBaseAddress A pointer to the framebuffer address.
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@param[out] VramSize A pointer to the size of the frame
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buffer in bytes
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@retval EFI_SUCCESS Frame buffer memory allocated successfully.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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EFI_STATUS
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LcdPlatformGetVram (
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OUT EFI_PHYSICAL_ADDRESS* VramBaseAddress,
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OUT UINTN* VramSize
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);
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/** Return total number of modes supported.
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Note: Valid mode numbers are 0 to MaxMode - 1
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See Section 12.9 of the UEFI Specification 2.7
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@retval UINT32 Mode Number.
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**/
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UINT32
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LcdPlatformGetMaxMode (
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VOID
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);
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/** Set the requested display mode.
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@param[in] ModeNumber Mode Number.
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@retval EFI_SUCCESS Mode set successfully.
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@retval EFI_INVALID_PARAMETER Requested mode not found.
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@retval !(EFI_SUCCESS) Other errors.
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**/
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EFI_STATUS
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LcdPlatformSetMode (
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IN UINT32 ModeNumber
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);
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/** Return information for the requested mode number.
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@param[in] ModeNumber Mode Number.
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@param[out] Info Pointer for returned mode information
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(on success).
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@retval EFI_SUCCESS Mode information for the requested mode
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returned successfully.
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@retval EFI_INVALID_PARAMETER Requested mode not found.
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**/
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EFI_STATUS
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LcdPlatformQueryMode (
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IN UINT32 ModeNumber,
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OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info
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);
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/** Return display timing information for the requested mode number.
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@param[in] ModeNumber Mode Number.
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@param[out] HRes Pointer to horizontal resolution.
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@param[out] HSync Pointer to horizontal sync width.
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@param[out] HBackPorch Pointer to horizontal back porch.
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@param[out] HFrontPorch Pointer to horizontal front porch.
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@param[out] VRes Pointer to vertical resolution.
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@param[out] VSync Pointer to vertical sync width.
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@param[out] VBackPorch Pointer to vertical back porch.
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@param[out] VFrontPorch Pointer to vertical front porch.
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@retval EFI_SUCCESS Display timing information for the requested
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mode returned successfully.
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@retval EFI_INVALID_PARAMETER Requested mode not found.
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**/
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EFI_STATUS
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LcdPlatformGetTimings (
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IN UINT32 ModeNumber,
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@ -212,6 +254,16 @@ LcdPlatformGetTimings (
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OUT UINT32* VFrontPorch
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);
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/** Return bits per pixel information for a mode number.
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@param[in] ModeNumber Mode Number.
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@param[out] Bpp Pointer to value bits per pixel information.
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@retval EFI_SUCCESS Bit per pixel information for the requested
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mode returned successfully.
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@retval EFI_INVALID_PARAMETER Requested mode not found.
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**/
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EFI_STATUS
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LcdPlatformGetBpp (
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IN UINT32 ModeNumber,
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@ -1,4 +1,5 @@
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/** @file
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This file contains the platform independent parts of HdLcd
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Copyright (c) 2011-2018, ARM Ltd. All rights reserved.<BR>
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@ -21,10 +22,6 @@
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#include "HdLcd.h"
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/** This file contains all the bits of the Lcd that are
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platform independent.
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**/
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STATIC
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UINTN
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GetBytesPerPixel (
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@ -51,6 +48,12 @@ GetBytesPerPixel (
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}
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}
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/** Initialize display.
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@param[in] VramBaseAddress Address of the framebuffer.
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@retval EFI_SUCCESS Display initialization successful.
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**/
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EFI_STATUS
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LcdInitialize (
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IN EFI_PHYSICAL_ADDRESS VramBaseAddress
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@ -82,6 +85,14 @@ LcdInitialize (
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return EFI_SUCCESS;
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}
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/** Set requested mode of the display.
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@param[in] ModeNumber Display mode number.
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@retval EFI_SUCCESS Display mode set successfully.
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@retval EFI_DEVICE_ERROR Reurns an error if display timing
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information is not available.
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**/
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EFI_STATUS
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LcdSetMode (
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IN UINT32 ModeNumber
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@ -150,6 +161,8 @@ LcdSetMode (
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return EFI_SUCCESS;
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}
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/** De-initializes the display.
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**/
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VOID
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LcdShutdown (
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VOID
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@ -159,6 +172,11 @@ LcdShutdown (
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MmioWrite32 (HDLCD_REG_COMMAND, HDLCD_DISABLE);
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}
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/** Check for presence of HDLCD.
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@retval EFI_SUCCESS Returns success if platform implements a HDLCD
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controller.
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**/
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EFI_STATUS
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LcdIdentify (
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VOID
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@ -1,6 +1,7 @@
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/** @file
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Copyright (c) 2017, Linaro, Ltd. All rights reserved.
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Copyright (c) 2018, Arm Limited. All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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@ -17,6 +18,12 @@
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#include <Library/DebugLib.h>
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#include <Library/LcdPlatformLib.h>
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/** Platform related initialization function.
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@param[in] Handle Handle to the LCD device instance.
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@retval EFI_UNSUPPORTED Interface is not supported.
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**/
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EFI_STATUS
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LcdPlatformInitializeDisplay (
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IN EFI_HANDLE Handle
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@ -26,6 +33,17 @@ LcdPlatformInitializeDisplay (
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return EFI_UNSUPPORTED;
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}
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/** Allocate VRAM memory in DRAM for the framebuffer
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(unless it is reserved already).
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The allocated address can be used to set the framebuffer.
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@param[out] VramBaseAddress A pointer to the framebuffer address.
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@param[out] VramSize A pointer to the size of the frame
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buffer in bytes
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@retval EFI_UNSUPPORTED Interface is not supported.
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**/
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EFI_STATUS
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LcdPlatformGetVram (
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OUT EFI_PHYSICAL_ADDRESS* VramBaseAddress,
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@ -36,6 +54,14 @@ LcdPlatformGetVram (
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return EFI_UNSUPPORTED;
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}
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/** Return total number of modes supported.
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Note: Valid mode numbers are 0 to MaxMode - 1
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See Section 12.9 of the UEFI Specification 2.7
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@retval UINT32 Zero number of modes supported
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in a NULL library implementation.
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**/
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UINT32
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LcdPlatformGetMaxMode (
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VOID
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@ -45,6 +71,12 @@ LcdPlatformGetMaxMode (
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return 0;
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}
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/** Set the requested display mode.
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@param[in] ModeNumber Mode Number.
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@retval EFI_UNSUPPORTED Interface is not supported.
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**/
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EFI_STATUS
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LcdPlatformSetMode (
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IN UINT32 ModeNumber
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@ -54,6 +86,15 @@ LcdPlatformSetMode (
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return EFI_UNSUPPORTED;
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}
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/** Return information for the requested mode number.
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@param[in] ModeNumber Mode Number.
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@param[out] Info Pointer for returned mode information
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(on success).
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@retval EFI_UNSUPPORTED Interface is not supported.
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**/
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EFI_STATUS
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LcdPlatformQueryMode (
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IN UINT32 ModeNumber,
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@ -64,6 +105,21 @@ LcdPlatformQueryMode (
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return EFI_UNSUPPORTED;
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}
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/** Return display timing information for the requested mode number.
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@param[in] ModeNumber Mode Number.
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@param[out] HRes Pointer to horizontal resolution.
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@param[out] HSync Pointer to horizontal sync width.
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@param[out] HBackPorch Pointer to horizontal back porch.
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@param[out] HFrontPorch Pointer to horizontal front porch.
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@param[out] VRes Pointer to vertical resolution.
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@param[out] VSync Pointer to vertical sync width.
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@param[out] VBackPorch Pointer to vertical back porch.
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@param[out] VFrontPorch Pointer to vertical front porch.
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@retval EFI_UNSUPPORTED Interface is not supported.
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**/
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EFI_STATUS
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LcdPlatformGetTimings (
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IN UINT32 ModeNumber,
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@ -81,6 +137,15 @@ LcdPlatformGetTimings (
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return EFI_UNSUPPORTED;
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}
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/** Return bits per pixel information for a mode number.
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@param[in] ModeNumber Mode Number.
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@param[out] Bpp Pointer to value bits per pixel information.
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@retval EFI_UNSUPPORTED Interface is not supported.
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**/
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EFI_STATUS
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LcdPlatformGetBpp (
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IN UINT32 ModeNumber,
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@ -1,4 +1,5 @@
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/** @file
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This file contains the platform independent parts of PL111Lcd
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Copyright (c) 2011-2018, ARM Ltd. All rights reserved.<BR>
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@ -19,9 +20,12 @@
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#include "PL111Lcd.h"
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/** This file contains all the bits of the PL111 that are
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platform independent.
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/** Check for presence of PL111.
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@retval EFI_SUCCESS Returns success if platform implements a
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PL111 controller.
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@retval EFI_NOT_FOUND PL111 display controller not found the plaform.
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**/
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EFI_STATUS
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LcdIdentify (
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@ -45,6 +49,12 @@ LcdIdentify (
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return EFI_NOT_FOUND;
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}
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/** Initialize display.
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@param[in] VramBaseAddress Address of the framebuffer.
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@retval EFI_SUCCESS Initialization of display successful.
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**/
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EFI_STATUS
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LcdInitialize (
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IN EFI_PHYSICAL_ADDRESS VramBaseAddress
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@ -60,6 +70,14 @@ LcdInitialize (
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return EFI_SUCCESS;
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}
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/** Set requested mode of the display.
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@param[in] ModeNumbe Display mode number.
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@retval EFI_SUCCESS Display mode set successfuly.
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@retval EFI_DEVICE_ERROR It returns an error if display timing
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information is not available.
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**/
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EFI_STATUS
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LcdSetMode (
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IN UINT32 ModeNumber
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@ -130,6 +148,8 @@ LcdSetMode (
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return EFI_SUCCESS;
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}
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/** De-initializes the display.
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*/
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VOID
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LcdShutdown (
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VOID
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