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fa643a9fc7
CR50 will need three serial endpoints for the streaming AP and EC UART and exporting its own console through USB. This change adds a macro to create endpoints that can be recognized by the usb_serial driver. BUG=chrome-os-partner:50702 BRANCH=none TEST=Verify "/dev/google/Cr50*/serial/Blob" prints capital letters when lower case letters are input. Change-Id: Iddf2c957a00dc3cd5448a6a00de2cf61ef5dd84c Signed-off-by: Mary Ruthven <mruthven@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/336441 Tested-by: Bill Richardson <wfrichar@chromium.org> Reviewed-by: Bill Richardson <wfrichar@chromium.org>
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/* Copyright 2015 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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/* Handle an opaque blob of data */
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#include "common.h"
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#include "console.h"
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#include "consumer.h"
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#include "queue.h"
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#include "queue_policies.h"
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#include "producer.h"
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#include "task.h"
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#include "usb-stream.h"
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#define CPRINTS(format, args...) cprints(CC_USB, format, ## args)
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struct consumer const blob_consumer;
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struct usb_stream_config const usb_blob;
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static struct queue const blob_to_usb = QUEUE_DIRECT(64, uint8_t,
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null_producer,
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usb_blob.consumer);
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static struct queue const usb_to_blob = QUEUE_DIRECT(64, uint8_t,
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usb_blob.producer,
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blob_consumer);
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USB_STREAM_CONFIG(usb_blob,
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USB_IFACE_BLOB,
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USB_STR_BLOB_NAME,
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USB_EP_BLOB,
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USB_MAX_PACKET_SIZE,
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USB_MAX_PACKET_SIZE,
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usb_to_blob,
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blob_to_usb)
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static void blob_written(struct consumer const *consumer, size_t count)
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{
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int i;
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uint8_t buf[USB_MAX_PACKET_SIZE];
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count = QUEUE_REMOVE_UNITS(consumer->queue, buf, count);
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CPRINTS("Received: count=%d buf=((%s))", count, buf);
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/*
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* Just to have something to test to begin with, we'll
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* implement "tr a-zA-Z A-Za-z" and return the result.
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*/
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for (i = 0; i < count; i++) {
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char tmp = buf[i];
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if (tmp >= 'a' && tmp <= 'z')
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buf[i] = tmp - ('a' - 'A');
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else if (tmp >= 'A' && tmp <= 'Z')
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buf[i] = tmp + ('a' - 'A');
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}
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count = QUEUE_ADD_UNITS(&blob_to_usb, buf, count);
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CPRINTS("Sending: count=%d buf=((%s))", count, buf);
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}
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static void blob_flush(struct consumer const *consumer)
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{
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}
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struct consumer const blob_consumer = {
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.queue = &usb_to_blob,
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.ops = &((struct consumer_ops const) {
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.written = blob_written,
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.flush = blob_flush,
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}),
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};
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