2c8f92039d
Added initial support Xilinx Embedded Software. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
229 lines
8.9 KiB
C
Executable file
229 lines
8.9 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2008 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/***************************************************************************/
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/**
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*
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* @file xtft.h
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*
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* This header file contains the definitions and declarations for the
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* high level driver to access the Xilinx TFT Controller Device.
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*
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* The device has the capability of displaying data onto a 640*480 VGA TFT
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* screen. It can take up to 256K colors. There is no interrupt mode.
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*
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* The functions XTft_Setpixel and XTft_Getpixel are provided in the driver
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* to write to and read from the individual pixels, the color values.
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*
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* These are generally stored in the assigned 2MB Video Memory which is
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* configurable.
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*
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* Video Memory stores each pixel value in 32bits. Out of this 2MB memory which
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* can hold 1024 pixels per line and 512 lines per frame data, only 640 pixels
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* per line and 480 lines per frame are used.
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*
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* Each base color Red, Green, Blue is encoded using 6 bits which sums up to
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* 18bits which is stored in the Dual port BRAM.
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*
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*
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* <b>Initialization & Configuration</b>
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*
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* The XTft_Config structure is used by the driver to configure itself. This
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* configuration structure is typically created by the tool-chain based on HW
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* build properties.
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*
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* To support multiple runtime loading and initialization strategies employed
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* by various operating systems, the driver instance can be initialized as
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* follows:
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*
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* - XTft_CfgInitialize(InstancePtr, CfgPtr, BaseAddress) - Uses a
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* configuration structure provided by the caller. If running in a system
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* with address translation, the provided virtual memory base address
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* replaces the physical address present in the configuration structure.
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*
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* <b>Interrupts</b>
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*
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* The TFT device supports a single interrupt which is generated for a Vsync
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* pulse.
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*
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* This driver does not provide a Interrupt Service Routine (ISR) for the device.
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* It is the responsibility of the application to provide one if needed.
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*
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* <b>RTOS Independence</b>
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*
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* This driver is intended to be RTOS and processor independent. It works
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* with physical addresses only. Any needs for dynamic memory management,
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* threads or thread mutual exclusion, virtual memory, or cache control must
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* be satisfied by the layer above this driver.
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*
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- ---- -------- -----------------------------------------------
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* 1.00a sg 03/24/08 First release
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* 2.00a ktn 07/06/09 Added XTft_IntrEnable(), XTft_IntrDisable()and,
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* XTft_GetVsyncStatus() functions to access newly added
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* Interrupt Enable and Status Register.
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* 3.00a ktn 10/22/09 Updated driver to use the HAL APIs/macros.
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* Removed the macros XTft_mSetPixel and XTft_mGetPixel.
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* 3.00a bss 01/16/12 Updated driver to remove warnings from asserts.
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* 3.01a sg 05/30/12 Corrected the brace error introduced in
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* XTft_GetPixel while changing it from macro to
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* function for CR 647750.
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* 3.02a bss 11/30/12 CR 690338 - Corrected the brace error introduced in
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* XTft_GetPixel for CR 647750.
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* 4.00a bss 01/25/13 Added support for AXI TFT controller, this driver
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* can only be used for AXI TFT controller
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* XTft_WriteReg and XTft_ReadReg functions are updated
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* Removed all functionality associated with DCR access
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* PlbAccess and DcrBaseAddr are removed from the
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* XTft_Config config structure
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* 4.01a bss 11/01/13 Modified driver tcl to retrieve C_BASEADDR/C_HIGHADDR
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* CR#757359.
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* 5.0 adk 19/12/13 Updated as per the New Tcl API's
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*</pre>
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*
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****************************************************************************/
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#ifndef XTFT_H /* prevent circular inclusions */
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#define XTFT_H /* by using protection macros */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/***************************** Include Files *******************************/
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#include "xstatus.h"
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#include "xtft_hw.h"
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/************************** Constant Definitions ***************************/
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/**
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* As the first bitmap available in the Character Bitmap array is "space"
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* whose value is 32 in the ASCII character table, this offset enables us to
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* move to this first character in the array. To achieve this we subtract
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* this offset from the char value actually received to the XTft_WriteChar
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* function. Similarly to move to any other character this offset must be
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* subtracted.
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*/
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#define XTFT_ASCIICHAR_OFFSET 32
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/**
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* The default color is white for foreground and black for background.
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* These values can range from 0 to 0xFFFFFFFF as each color is ranging
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* from 0 to 3F. The default value for column and row is 0.
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*/
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#define XTFT_DEF_FGCOLOR 0x00FFFFFF /**< Foreground Color - White */
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#define XTFT_DEF_BGCOLOR 0x0 /**< Background Color - Black */
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#define XTFT_DEF_COLVAL 0x0 /**< Default Column Value */
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#define XTFT_DEF_ROWVAL 0x0 /**< Default Row Value */
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/**************************** Type Definitions *****************************/
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/**
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* This structure holds the Device base address, video memory base address
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* and Unique identifier of the device.
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*/
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typedef struct {
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u16 DeviceId; /**< Unique ID of device */
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u32 BaseAddress; /**< Base address of device */
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u32 VideoMemBaseAddr; /**< Video Memory Base address */
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} XTft_Config;
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/**
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* This structure is the base for whole of the operations that are to be
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* performed on the TFT screen. With this we will get a handle to the driver
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* through which we access different members like base address, deviceID
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* and using them we navigate, fill colors etc.
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*/
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typedef struct {
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XTft_Config TftConfig; /**< Instance of Config Structure */
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u32 IsReady; /**< Status of Instance */
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u32 ColVal; /**< Column position */
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u32 RowVal; /**< Row position */
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u32 FgColor; /**< Foreground Color */
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u32 BgColor; /**< Background Color */
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} XTft;
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/***************** Macros (Inline Functions) Definitions *******************/
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/************************** Function Prototypes ****************************/
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/*
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* Initialization function in xtft_sinit.c.
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*/
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XTft_Config *XTft_LookupConfig(u16 DeviceId);
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/*
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* Functions for basic driver operations in xtft.c.
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*/
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int XTft_CfgInitialize(XTft *InstancePtr, XTft_Config *ConfigPtr,
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u32 EffectiveAddr);
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void XTft_SetPos(XTft *InstancePtr, u32 ColVal, u32 RowVal);
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void XTft_SetPosChar(XTft *InstancePtr, u32 ColVal, u32 RowVal);
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void XTft_SetColor(XTft *InstancePtr, u32 FgColor, u32 BgColor);
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void XTft_SetPixel(XTft *InstancePtr, u32 ColVal, u32 RowVal, u32 PixelVal);
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void XTft_GetPixel(XTft *InstancePtr, u32 ColVal, u32 RowVal, u32* PixelVal);
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void XTft_Write(XTft *InstancePtr, u8 CharValue);
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void XTft_Scroll(XTft *InstancePtr);
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void XTft_ClearScreen(XTft *InstancePtr);
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void XTft_FillScreen(XTft* InstancePtr, u32 ColStartVal,
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u32 RowStartVal,u32 ColEndVal, u32 RowEndVal,
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u32 PixelVal);
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void XTft_EnableDisplay(XTft *InstancePtr);
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void XTft_DisableDisplay(XTft *InstancePtr);
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void XTft_ScanReverse(XTft* InstancePtr);
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void XTft_ScanNormal(XTft* InstancePtr);
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void XTft_SetFrameBaseAddr(XTft *InstancePtr, u32 NewFrameBaseAddr);
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void XTft_WriteReg(XTft* InstancePtr, u32 RegOffset, u32 Data);
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u32 XTft_ReadReg(XTft* InstancePtr, u32 RegOffset);
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void XTft_IntrEnable(XTft* InstancePtr);
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void XTft_IntrDisable(XTft* InstancePtr);
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int XTft_GetVsyncStatus(XTft* InstancePtr);
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/************************** Variable Definitions ***************************/
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/************************** Function Definitions ***************************/
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#ifdef __cplusplus
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}
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#endif
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#endif /* XTFT_H */
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