106 lines
3.8 KiB
C
106 lines
3.8 KiB
C
/****************************************************************************
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* arch/arm64/src/a64/a64_mipi_dsi.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM64_SRC_A64_A64_MIPI_DSI_H
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#define __ARCH_ARM64_SRC_A64_A64_MIPI_DSI_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include "hardware/a64_memorymap.h"
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#include "mipi_dsi.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Virtual Channel to be used for data transfer on the MIPI DSI Bus */
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#define A64_MIPI_DSI_VIRTUAL_CHANNEL 0
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: a64_mipi_dsi_enable
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*
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* Description:
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* Enable the MIPI DSI Block on the SoC. Should be called before
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* transferring data on the MIPI DSI Bus.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* OK is always returned at present.
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*
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****************************************************************************/
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int a64_mipi_dsi_enable(void);
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/****************************************************************************
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* Name: a64_mipi_dsi_write
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*
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* Description:
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* Transmit the payload data to the MIPI DSI Bus as a MIPI DSI Short or
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* Long Packet. This function is called to initialize the LCD Controller.
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* Assumes that the MIPI DSI Block has been enabled on the SoC.
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*
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* Input Parameters:
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* channel - Virtual Channel
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* cmd - DCS Command (Data Type)
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* txbuf - Payload data for the packet
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* txlen - Length of payload data (Max 65541 bytes)
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*
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* Returned Value:
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* Number of bytes transmitted; a negated errno value is returned on any
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* failure.
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*
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****************************************************************************/
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ssize_t a64_mipi_dsi_write(uint8_t channel,
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enum mipi_dsi_e cmd,
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const uint8_t *txbuf,
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size_t txlen);
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/****************************************************************************
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* Name: a64_mipi_dsi_start
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*
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* Description:
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* Start the MIPI DSI Bus in High Speed Clock Mode (HSC) for High Speed
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* Data Transmission (HSD). Should be called after initializing the LCD
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* Controller, and before executing any Display Engine operations.
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* Assumes that the MIPI DSI Block has been enabled on the SoC.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* OK is always returned at present.
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*
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****************************************************************************/
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int a64_mipi_dsi_start(void);
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#endif /* __ARCH_ARM64_SRC_A64_A64_MIPI_DSI_H */
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