mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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8df3b161e9
This firmware supports a board used to initialize firmware on new cr50 parts. BUG=b:36910757 BRANCH=None TEST=boots on scribe board, spi/usb/uart/i2c functionality works. TEST=cr50 boots on reef, CCD EC+AP SPI/UARTS work Change-Id: I48818225393a6fc0db0c30bc79ad9787de608361 Reviewed-on: https://chromium-review.googlesource.com/437627 Commit-Ready: Nick Sanders <nsanders@chromium.org> Tested-by: Nick Sanders <nsanders@chromium.org> Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
139 lines
3.3 KiB
C
139 lines
3.3 KiB
C
/* Copyright 2016 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "queue.h"
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#include "queue_policies.h"
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#include "uartn.h"
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#include "usart.h"
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#include "usb-stream.h"
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#define USE_UART_INTERRUPTS (!(defined(CONFIG_CUSTOMIZED_RO) && \
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defined(SECTION_IS_RO)))
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#define QUEUE_SIZE 64
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#ifdef CONFIG_STREAM_USART1
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struct usb_stream_config const ap_usb;
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struct usart_config const ap_uart;
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static struct queue const ap_uart_to_usb =
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QUEUE_DIRECT(QUEUE_SIZE, uint8_t, ap_uart.producer, ap_usb.consumer);
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static struct queue const ap_usb_to_uart =
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QUEUE_DIRECT(QUEUE_SIZE, uint8_t, ap_usb.producer, ap_uart.consumer);
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USART_CONFIG(ap_uart,
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UART_AP,
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ap_uart_to_usb,
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ap_usb_to_uart);
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USB_STREAM_CONFIG(ap_usb,
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USB_IFACE_AP,
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USB_STR_AP_NAME,
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USB_EP_AP,
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USB_MAX_PACKET_SIZE,
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USB_MAX_PACKET_SIZE,
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ap_usb_to_uart,
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ap_uart_to_usb)
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#endif
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#ifdef CONFIG_STREAM_USART2
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struct usb_stream_config const ec_usb;
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struct usart_config const ec_uart;
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static struct queue const ec_uart_to_usb =
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QUEUE_DIRECT(QUEUE_SIZE, uint8_t, ec_uart.producer, ec_usb.consumer);
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static struct queue const ec_usb_to_uart =
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QUEUE_DIRECT(QUEUE_SIZE, uint8_t, ec_usb.producer, ec_uart.consumer);
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USART_CONFIG(ec_uart,
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UART_EC,
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ec_uart_to_usb,
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ec_usb_to_uart);
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USB_STREAM_CONFIG(ec_usb,
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USB_IFACE_EC,
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USB_STR_EC_NAME,
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USB_EP_EC,
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USB_MAX_PACKET_SIZE,
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USB_MAX_PACKET_SIZE,
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ec_usb_to_uart,
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ec_uart_to_usb)
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#endif
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void get_data_from_usb(struct usart_config const *config)
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{
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struct queue const *uart_out = config->consumer.queue;
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int c;
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/* Copy output from buffer until TX fifo full or output buffer empty */
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while (queue_count(uart_out) && QUEUE_REMOVE_UNITS(uart_out, &c, 1))
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uartn_write_char(config->uart, c);
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/* If output buffer is empty, disable transmit interrupt */
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if (!queue_count(uart_out))
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uartn_tx_stop(config->uart);
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}
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void send_data_to_usb(struct usart_config const *config)
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{
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struct queue const *uart_in = config->producer.queue;
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/* Copy input from buffer until RX fifo empty or the queue is full */
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while (uartn_rx_available(config->uart) && queue_space(uart_in)) {
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int c = uartn_read_char(config->uart);
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QUEUE_ADD_UNITS(uart_in, &c, 1);
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}
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}
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static void uart_read(struct producer const *producer, size_t count)
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{
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}
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static void uart_written(struct consumer const *consumer, size_t count)
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{
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struct usart_config const *config =
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DOWNCAST(consumer, struct usart_config, consumer);
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if (uartn_tx_ready(config->uart), queue_count(consumer->queue))
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uartn_tx_start(config->uart);
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}
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static void uart_flush(struct consumer const *consumer)
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{
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struct usart_config const *config =
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DOWNCAST(consumer, struct usart_config, consumer);
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uartn_tx_flush(config->uart);
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}
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struct producer_ops const uart_producer_ops = {
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.read = uart_read,
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};
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struct consumer_ops const uart_consumer_ops = {
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.written = uart_written,
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.flush = uart_flush,
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};
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#if USE_UART_INTERRUPTS
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#ifdef CONFIG_STREAM_USART1
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/*
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* Interrupt handlers for UART1
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*/
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CONFIGURE_INTERRUPTS(ap_uart,
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GC_IRQNUM_UART1_RXINT,
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GC_IRQNUM_UART1_TXINT)
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#endif
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#ifdef CONFIG_STREAM_USART2
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/*
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* Interrupt handlers for UART2
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*/
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CONFIGURE_INTERRUPTS(ec_uart,
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GC_IRQNUM_UART2_RXINT,
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GC_IRQNUM_UART2_TXINT)
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#endif
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#endif
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