157 lines
5.8 KiB
C
157 lines
5.8 KiB
C
/************************************************************************************
|
|
* arch/arm/src/str71x/str71x_internal.h
|
|
*
|
|
* Copyright (C) 2008-2009, 2015 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
************************************************************************************/
|
|
|
|
#ifndef __ARCH_ARM_SRC_STR71X_STR71X_INTERNAL_H
|
|
#define __ARCH_ARM_SRC_STR71X_STR71X_INTERNAL_H
|
|
|
|
/************************************************************************************
|
|
* Included Files
|
|
************************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdbool.h>
|
|
|
|
#include <arch/board/board.h>
|
|
|
|
/************************************************************************************
|
|
* Pre-processor Definitions
|
|
************************************************************************************/
|
|
|
|
/* Calculate the values of PCLK1 and PCLK2 from settings in board.h.
|
|
*
|
|
* Example:
|
|
* STR71X_RCCU_MAIN_OSC = 4MHz (not divided by 2)
|
|
* STR71X_CLK2 = 4MHz
|
|
* STR71X_PLL1OUT = 16 * STR71X_CLK2 / 2 = 32MHz
|
|
* CLK3 = 32MHz
|
|
* RCLK = 32MHz
|
|
* PCLK1 = 32MHz / 1 = 32MHz
|
|
*/
|
|
|
|
/* PLL1OUT derives from Main OSC->CLK2 */
|
|
|
|
#ifdef STR71X_PLL1IN_DIV2 /* CLK2 is input to PLL1 */
|
|
# define STR71X_CLK2 (STR71X_RCCU_MAIN_OSC/2) /* CLK2 is OSC/2 */
|
|
#else
|
|
# define STR71X_CLK2 STR71X_RCCU_MAIN_OSC /* CLK2 is OSC */
|
|
#endif
|
|
|
|
#define STR71X_PLL1OUT ((STR71X_PLL1OUT_MUL * STR71X_CLK2) / STR71X_PLL1OUT_DIV)
|
|
|
|
/* PLL2 OUT derives from HCLK */
|
|
|
|
#define STR71X_PLL2OUT ((STR71X_PLL2OUT_MUL * STR71X_HCLK) / STR71X_PLL2OUT_DIV)
|
|
|
|
/* Peripheral clocks derive from PLL1OUT->CLK3->RCLK->PCLK1/2 */
|
|
|
|
#define STR71X_CLK3 STR71X_PLL1OUT /* CLK3 hard coded to be PLL1OUT */
|
|
#define STR71X_RCLK STR71X_CLK3 /* RCLK hard coded to be CLK3 */
|
|
#define STR71X_PCLK1 (STR71X_RCLK / STR71X_APB1_DIV) /* PCLK1 derives from RCLK */
|
|
#define STR71X_PCLK2 (STR71X_RCLK / STR71X_APB2_DIV) /* PCLK2 derives from RCLK */
|
|
|
|
/************************************************************************************
|
|
* Public Types
|
|
************************************************************************************/
|
|
|
|
/************************************************************************************
|
|
* Public Data
|
|
************************************************************************************/
|
|
|
|
/************************************************************************************
|
|
* Public Functions
|
|
************************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* Name: str7x_xtiinitialize
|
|
*
|
|
* Description:
|
|
* Configure XTI for operation. Note that the lines are not used as wake-up
|
|
* sources in this implementation. Some extensions would be required for that
|
|
* capability.
|
|
*
|
|
********************************************************************************/
|
|
|
|
#ifdef CONFIG_STR71X_XTI
|
|
int str71x_xtiinitialize(void);
|
|
#else
|
|
# define str71x_xtiinitialize()
|
|
#endif /* CONFIG_STR71X_XTI */
|
|
|
|
/********************************************************************************
|
|
* Name: str7x_xticonfig
|
|
*
|
|
* Description:
|
|
* Configure an external line to provide interrupts. Interrupt is configured,
|
|
* but disabled on return.
|
|
*
|
|
********************************************************************************/
|
|
|
|
#ifdef CONFIG_STR71X_XTI
|
|
int str71x_xticonfig(int irq, bool rising);
|
|
#else
|
|
# define str71x_xticonfig(irq,rising)
|
|
#endif /* CONFIG_STR71X_XTI */
|
|
|
|
/****************************************************************************
|
|
* Name: str71x_enable_xtiirq
|
|
*
|
|
* Description:
|
|
* Enable an external interrupt.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_STR71X_XTI
|
|
void str71x_enable_xtiirq(int irq);
|
|
#else
|
|
# define str71x_enable_xtiirq(irq)
|
|
#endif /* CONFIG_STR71X_XTI */
|
|
|
|
/****************************************************************************
|
|
* Name: str71x_disable_xtiirq
|
|
*
|
|
* Description:
|
|
* Disable an external interrupt.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_STR71X_XTI
|
|
void str71x_disable_xtiirq(int irq);
|
|
#else
|
|
# define str71x_disable_xtiirq(irq)
|
|
#endif /* CONFIG_STR71X_XTI */
|
|
|
|
#endif /* __ARCH_ARM_SRC_STR71X_STR71X_INTERNAL_H */
|