ae205f2c8f
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4011 42af7a65-404d-4744-a932-0658087f49c3
140 lines
4.7 KiB
C
140 lines
4.7 KiB
C
/************************************************************************************
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* configs/sam3u-ek/src/up_mmcsd.c
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* arch/arm/src/board/up_mmcsd.c
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*
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* Copyright (C) 2010 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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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 <stdbool.h>
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#include <debug.h>
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#include "sam3u_internal.h"
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#include "sam3uek_internal.h"
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#ifdef CONFIG_SAM3U_HSMCI
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/* This needs to be extended. The card detect GPIO must be configured as an interrupt.
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* when the interrupt indicating that a card has been inserted or removed is received,
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* this function must call sio_mediachange() to handle that event. See
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* arch/arm/src/sam3u/sam3u_internal.h for more information.
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*/
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#ifdef GPIO_MCI_CD
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# warning "Card detect interrupt handling needed"
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#endif
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/************************************************************************************
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* Private Functions
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************************************************************************************/
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: sam3u_hsmciinit
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*
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* Description:
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* Initialize HSMCI support. This function is called very early in board
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* initialization.
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*
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************************************************************************************/
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int sam3u_hsmciinit(void)
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{
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#ifdef GPIO_MCI_CD
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sam3u_configgpio(GPIO_MCI_CD);
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#endif
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#ifdef GPIO_MCI_WP
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sam3u_configgpio(GPIO_MCI_WP);
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#endif
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return OK;
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}
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/************************************************************************************
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* Name: sam3u_cardinserted
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*
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* Description:
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* Check if a card is inserted into the selected HSMCI slot
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*
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************************************************************************************/
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bool sam3u_cardinserted(unsigned char slot)
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{
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if (slot == 0)
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{
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#ifdef GPIO_MCI_CD
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bool inserted = sam3u_gpioread(GPIO_MCI_CD);
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fvdbg("inserted: %s\n", inserted ? "NO" : "YES");
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return !inserted;
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#else
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return true;
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#endif
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}
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return false;
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}
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/************************************************************************************
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* Name: sam3u_writeprotected
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*
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* Description:
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* Check if a card is inserted into the selected HSMCI slot
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*
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************************************************************************************/
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bool sam3u_writeprotected(unsigned char slot)
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{
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if (slot == 0)
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{
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#ifdef GPIO_MCI_WP
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bool protected = sam3u_gpioread(GPIO_MCI_WP);
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fvdbg("protected: %s\n", inserted ? "YES" : "NO");
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return protected;
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#else
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return false;
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#endif
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}
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return false;
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}
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#endif /* CONFIG_SAM3U_HSMCI */
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