02b244cb6f
Sebastien Lorquet has submitted the CLA Uros Platise has submitted the CLA Gregory Nutt is the copyright holder for those files and he has submitted the SGA as a result we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
144 lines
3.8 KiB
C
144 lines
3.8 KiB
C
/****************************************************************************
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* arch/arm/src/moxart/moxart_16550.c
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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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <nuttx/irq.h>
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#include <nuttx/arch.h>
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#include <nuttx/serial/serial.h>
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#include <nuttx/fs/ioctl.h>
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#include <nuttx/serial/uart_16550.h>
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#include <nuttx/serial/mxser.h>
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#include "arm.h"
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#include "arm_arch.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void uart_decodeirq(int irq, FAR void *context)
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{
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int i;
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uint32_t status;
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static int os = 0;
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status = *((volatile uart_addrwidth_t *)CONFIG_UART_MOXA_IRQ_STATUS_REG);
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if ((status & 0x3f) == 0x3f)
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{
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return;
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}
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i = 0;
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do
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{
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if (!(status & 0x1))
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{
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irq_dispatch(VIRQ_START + i, context);
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}
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status >>= 1;
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}
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while (++i <= 4);
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}
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#ifdef CONFIG_SERIAL_UART_ARCH_IOCTL
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int uart_ioctl(struct file *filep, int cmd, unsigned long arg)
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{
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struct inode *inode = filep->f_inode;
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struct uart_dev_s *dev = inode->i_private;
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struct u16550_s *priv = (struct u16550_s *)dev->priv;
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int ret = -ENOTTY;
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uint32_t vmode;
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unsigned int opmode;
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int bitm_off;
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/* TODO: calculate bit offset from UART_BASE address.
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* E.g.:
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* 0x9820_0000 -> 0
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* 0x9820_0020 -> 1
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* 0x9820_0040 -> 2
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*/
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/* HARD: coded value for UART1 */
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bitm_off = 1;
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switch (cmd)
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{
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case MOXA_SET_OP_MODE:
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{
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irqstate_t flags;
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opmode = *(unsigned long *)arg;
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/* Check for input data */
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if (opmode & ~OP_MODE_MASK)
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{
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ret = -EINVAL;
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break;
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}
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flags = enter_critical_section();
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/* Update mode register with requested mode */
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vmode = getreg32(CONFIG_UART_MOXA_MODE_REG);
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putreg32(vmode & ~(OP_MODE_MASK << 2 * bitm_off),
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CONFIG_UART_MOXA_MODE_REG);
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vmode = opmode << 2 * bitm_off;
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putreg32(getreg32(CONFIG_UART_MOXA_MODE_REG) | vmode,
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CONFIG_UART_MOXA_MODE_REG);
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leave_critical_section(flags);
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ret = OK;
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break;
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}
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case MOXA_GET_OP_MODE:
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{
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irqstate_t flags;
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flags = enter_critical_section();
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/* Read from mode register */
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opmode = (getreg32(CONFIG_UART_MOXA_MODE_REG) >> 2 * bitm_off) &
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OP_MODE_MASK;
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leave_critical_section(flags);
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*(unsigned long *)arg = opmode;
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ret = OK;
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break;
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}
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}
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return ret;
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}
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#endif
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