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boards/arm/lpc17xx_40xx/lx_cpu/src/lpc17_40_ulan.c: Provides for separate, non-standard uLAN registration at build-/run-time.

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Pavel Pisa 2019-08-30 07:58:05 -06:00 committed by Gregory Nutt
parent d1a4715a81
commit 64c918783b
3 changed files with 138 additions and 0 deletions
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18
boards/arm/lpc17xx_40xx/lx_cpu/include/board.h
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@ -466,4 +466,22 @@
#define GPIO_SSP1_MOSI GPIO_SSP1_MOSI_2
#define GPIO_SSP1_SCK GPIO_SSP1_SCK_2
#define UL_DRV_SYSLESS_CHIP "16450"
#define UL_DRV_SYSLESS_PORT LPC17_40_UART1_BASE
#define UL_DRV_SYSLESS_BAUD 19200
#define UL_DRV_SYSLESS_BAUDBASE ((BOARD_PCLK_FREQUENCY + 8) / 16)
#define UL_DRV_SYSLESS_IRQ LPC17_40_IRQ_UART1
#define UL_DRV_SYSLESS_MY_ADR_DEFAULT 3
typedef struct nuttx_ulan_chip_data {
const char *chip;
int my_adr;
int baud;
int baudbase;
int irq;
int port;
};
int nuttx_ulan_get_chip_data(int minor, struct nuttx_ulan_chip_data *chip_data);
#endif /* __BOARDS_ARM_LX_CPU_INCLUDE_BOARD_H */

2
boards/arm/lpc17xx_40xx/lx_cpu/src/Makefile
View file

@ -68,4 +68,6 @@ ifeq ($(CONFIG_CAN),y)
CSRCS += lpc17_40_can.c
endif
CSRCS += lpc17_40_ulan.c
include $(TOPDIR)/boards/Board.mk

118
boards/arm/lpc17xx_40xx/lx_cpu/src/lpc17_40_ulan.c Normal file
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@ -0,0 +1,118 @@
/************************************************************************************
* boards/lpc17xx_40xx/src/lpc17_40_ulan.c
*
* Copyright (C) 2019 Gregory Nutt. All rights reserved.
* Author: Pavel Pisa <ppisa@pikron.com>
*
* 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.
*
************************************************************************************/
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <nuttx/serial/serial.h>
#include <nuttx/irq.h>
#include <arch/board/board.h>
#include "chip.h"
#include "hardware/lpc17_40_uart.h"
#include "hardware/lpc17_40_pinconfig.h"
#include "hardware/lpc17_40_syscon.h"
#include "lpc17_40_gpio.h"
#include "up_arch.h"
#include "up_internal.h"
#include <arch/board/board.h>
#include "lx_cpu.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Configuration ********************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: nuttx_ulan_get_chip_data
*
* Description:
* Retrieve board specific data for uLAN driver
*
************************************************************************************/
int nuttx_ulan_get_chip_data(int minor, struct nuttx_ulan_chip_data *chip_data)
{
uint32_t regval;
irqstate_t flags;
if (minor > 0)
return 0;
/* Step 1: Enable power on UART1 */
flags = enter_critical_section();
regval = getreg32(LPC17_40_SYSCON_PCONP);
regval |= SYSCON_PCONP_PCUART1;
putreg32(regval, LPC17_40_SYSCON_PCONP);
/* Step 2: Enable clocking on UART */
#ifdef LPC176x
regval = getreg32(LPC17_40_SYSCON_PCLKSEL0);
regval &= ~SYSCON_PCLKSEL0_UART1_MASK;
regval |= ((uint32_t)g_uart1priv.cclkdiv << SYSCON_PCLKSEL0_UART1_SHIFT);
putreg32(regval, LPC17_40_SYSCON_PCLKSEL0);
#endif
lpc17_40_configgpio(GPIO_UART1_TXD);
lpc17_40_configgpio(GPIO_UART1_RXD);
lpc17_40_configgpio(GPIO_UART1_RTS);
lpc17_40_configgpio(GPIO_UART1_DSR);
lpc17_40_configgpio(GPIO_UART1_CTS);
chip_data->chip = UL_DRV_SYSLESS_CHIP;
chip_data->my_adr = UL_DRV_SYSLESS_MY_ADR_DEFAULT;
chip_data->baud = UL_DRV_SYSLESS_BAUD;
chip_data->baudbase = UL_DRV_SYSLESS_BAUDBASE;
chip_data->irq = UL_DRV_SYSLESS_IRQ;
chip_data->port = UL_DRV_SYSLESS_PORT;
leave_critical_section(flags);
return 1;
}