907d6b085b
arm: codestyle fixes 2
* arm: kl: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* arm: lc823450: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* arm: lpc17xx_40xx: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
200 lines
6.8 KiB
C
200 lines
6.8 KiB
C
/****************************************************************************
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* boards/arm/lpc17xx_40xx/zkit-arm-1769/src/lpc17_40_ssp.c
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*
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* Copyright (C) 2013 Zilogic Systems. All rights reserved.
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* Author: BabuSubashChandar <code@zilogic.com>
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*
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* Based on boards/lpcxpresso-lpc1768/src/lpc17_40_ssp.c
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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 <stdint.h>
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#include <stdbool.h>
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#include <debug.h>
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#include <nuttx/spi/spi.h>
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#include <arch/board/board.h>
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#include "up_arch.h"
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#include "chip.h"
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#include "lpc17_40_ssp.h"
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#include "lpc17_40_gpio.h"
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#include "zkit-arm-1769.h"
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#if defined(CONFIG_LPC17_40_SSP0) || defined(CONFIG_LPC17_40_SSP1)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Dump GPIO registers */
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#ifdef CONFIG_DEBUG_SPI_INFO
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# define ssp_dumpgpio(m) lpc17_40_dumpgpio(SDCCS_GPIO, m)
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#else
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# define ssp_dumpgpio(m)
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: zkit_sspdev_initialize
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*
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* Description:
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* Called to configure SPI chip select GPIO pins for the ZKIT-ARM-1769 Kit.
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*
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****************************************************************************/
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void weak_function zkit_sspdev_initialize(void)
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{
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/* Configure the SPI-based LCD CS GPIO */
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ssp_dumpgpio("zkit_sspdev_initialize() Entry)");
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/* Configure chip select for the LCD. */
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#ifdef CONFIG_LPC17_40_SSP0
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#ifdef CONFIG_NX_LCDDRIVER
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(void)lpc17_40_configgpio(ZKITARM_OLED_CS);
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#endif
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#endif /* CONFIG_LPC17_40_SSP0 */
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ssp_dumpgpio("zkit_sspdev_initialize() Exit");
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}
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/****************************************************************************
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* Name: lpc17_40_ssp0/ssp1select and lpc17_40_ssp0/ssp1status
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*
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* Description:
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* The external functions, lpc17_40_ssp0/ssp1select and
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* lpc17_40_ssp0/ssp1status must be provided by board-specific logic.
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* They are implementations of the select and status methods of the SPI
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* interface defined by struct spi_ops_s (see include/nuttx/spi/spi.h).
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* All other methods (including lpc17_40_sspbus_initialize())
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* are provided by common LPC17xx/LPC40xx logic.
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* To use this common SPI logic on your board:
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*
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* 1. Provide logic in lpc17_40_boardinitialize() to configure SPI/SSP chip
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* select pins.
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* 2. Provide lpc17_40_ssp0/ssp1select() and lpc17_40_ssp0/ssp1status()
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* functions in your board-specific logic.
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* These functions will perform chip selection and status operations
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* using GPIOs in the way your board is configured.
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* 3. Add a calls to lpc17_40_sspbus_initialize() in your low level
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* application initialization logic
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* 4. The handle returned by lpc17_40_sspbus_initialize() may then be used
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* to bind the SPI driver to higher level logic (e.g., calling
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* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
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* the SPI MMC/SD driver).
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*
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****************************************************************************/
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#ifdef CONFIG_LPC17_40_SSP1
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void lpc17_40_ssp1select(FAR struct spi_dev_s *dev, uint32_t devid,
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bool selected)
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{
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spiinfo("devid: %d CS: %s\n", (int)devid,
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selected ? "assert" : "de-assert");
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ssp_dumpgpio("lpc17_40_ssp1select() Entry");
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#warning "Assert CS here (false)"
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ssp_dumpgpio("lpc17_40_ssp1select() Exit");
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}
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uint8_t lpc17_40_ssp1status(FAR struct spi_dev_s *dev, uint32_t devid)
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{
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spiinfo("Returning SPI_STATUS_PRESENT\n");
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return SPI_STATUS_PRESENT;
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}
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/****************************************************************************
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* Name: lpc17_40_ssp1cmddata
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*
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* Description: Dummy Function
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*
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****************************************************************************/
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#ifdef CONFIG_SPI_CMDDATA
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int weak_function lpc17_40_ssp1cmddata(FAR struct spi_dev_s *dev,
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uint32_t devid, bool cmd)
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{
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return OK;
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}
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#endif /* CONFIG_SPI_CMDDATA */
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#endif /* CONFIG_LPC17_40_SSP1 */
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#ifdef CONFIG_LPC17_40_SSP0
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void lpc17_40_ssp0select(FAR struct spi_dev_s *dev, uint32_t devid,
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bool selected)
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{
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spiinfo("devid: %d CS: %s\n", (int)devid,
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selected ? "assert" : "de-assert");
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ssp_dumpgpio("lpc17_40_ssp0select() Entry");
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#ifdef CONFIG_NX_LCDDRIVER
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if (devid == SPIDEV_DISPLAY(0))
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{
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/* Assert the CS pin to the OLED display */
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(void)lpc17_40_gpiowrite(ZKITARM_OLED_CS, !selected);
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}
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#endif
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ssp_dumpgpio("lpc17_40_ssp0select() Exit");
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}
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uint8_t lpc17_40_ssp0status(FAR struct spi_dev_s *dev, uint32_t devid)
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{
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if (devid == SPIDEV_DISPLAY(0))
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{
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spiinfo("Returning SPI_STATUS_PRESENT\n");
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return SPI_STATUS_PRESENT;
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}
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spiinfo("Returning zero\n");
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return 0;
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}
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#endif /* CONFIG_LPC17_40_SSP0 */
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#endif /* CONFIG_LPC17_40_SSP0 || CONFIG_LPC17_40_SSP1 */
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