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528222d853
rc-core kapi uses nanoseconds for infrared durations for receiving, and microseconds for sending. The uapi already uses microseconds for both, so this patch does not change the uapi. Infrared durations do not need nanosecond resolution. IR protocols do not have durations shorter than about 100 microseconds. Some IR hardware offers 250 microseconds resolution, which is sufficient for most protocols. Better hardware has 50 microsecond resolution and is enough for every protocol I am aware off. Unify on microseconds everywhere. This simplifies the code since less conversion between microseconds and nanoseconds needs to be done. This affects: - rx_resolution member of struct rc_dev - timeout member of struct rc_dev - duration member in struct ir_raw_event Cc: "Bruno Prémont" <bonbons@linux-vserver.org> Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Cc: Patrick Lerda <patrick9876@free.fr> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Jerome Brunet <jbrunet@baylibre.com> Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Cc: Sean Wang <sean.wang@mediatek.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Patrice Chotard <patrice.chotard@st.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Chen-Yu Tsai <wens@csie.org> Cc: "David Härdeman" <david@hardeman.nu> Cc: Benjamin Valentin <benpicco@googlemail.com> Cc: Antti Palosaari <crope@iki.fi> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// Siano Mobile Silicon, Inc.
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// MDTV receiver kernel modules.
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// Copyright (C) 2006-2009, Uri Shkolnik
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//
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// Copyright (c) 2010 - Mauro Carvalho Chehab
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// - Ported the driver to use rc-core
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// - IR raw event decoding is now done at rc-core
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// - Code almost re-written
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#include "smscoreapi.h"
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#include <linux/types.h>
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#include <linux/input.h>
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#include "smsir.h"
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#include "sms-cards.h"
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#define MODULE_NAME "smsmdtv"
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void sms_ir_event(struct smscore_device_t *coredev, const char *buf, int len)
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{
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int i;
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const s32 *samples = (const void *)buf;
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for (i = 0; i < len >> 2; i++) {
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struct ir_raw_event ev = {
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.duration = abs(samples[i]),
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.pulse = (samples[i] > 0) ? false : true
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};
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ir_raw_event_store(coredev->ir.dev, &ev);
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}
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ir_raw_event_handle(coredev->ir.dev);
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}
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int sms_ir_init(struct smscore_device_t *coredev)
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{
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int err;
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int board_id = smscore_get_board_id(coredev);
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struct rc_dev *dev;
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pr_debug("Allocating rc device\n");
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dev = rc_allocate_device(RC_DRIVER_IR_RAW);
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if (!dev)
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return -ENOMEM;
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coredev->ir.controller = 0; /* Todo: vega/nova SPI number */
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coredev->ir.timeout = US_TO_NS(IR_DEFAULT_TIMEOUT);
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pr_debug("IR port %d, timeout %d ms\n",
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coredev->ir.controller, coredev->ir.timeout);
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snprintf(coredev->ir.name, sizeof(coredev->ir.name),
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"SMS IR (%s)", sms_get_board(board_id)->name);
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strscpy(coredev->ir.phys, coredev->devpath, sizeof(coredev->ir.phys));
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strlcat(coredev->ir.phys, "/ir0", sizeof(coredev->ir.phys));
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dev->device_name = coredev->ir.name;
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dev->input_phys = coredev->ir.phys;
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dev->dev.parent = coredev->device;
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#if 0
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/* TODO: properly initialize the parameters below */
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dev->input_id.bustype = BUS_USB;
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dev->input_id.version = 1;
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dev->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
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dev->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
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#endif
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dev->priv = coredev;
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dev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
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dev->map_name = sms_get_board(board_id)->rc_codes;
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dev->driver_name = MODULE_NAME;
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pr_debug("Input device (IR) %s is set for key events\n",
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dev->device_name);
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err = rc_register_device(dev);
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if (err < 0) {
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pr_err("Failed to register device\n");
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rc_free_device(dev);
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return err;
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}
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coredev->ir.dev = dev;
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return 0;
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}
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void sms_ir_exit(struct smscore_device_t *coredev)
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{
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rc_unregister_device(coredev->ir.dev);
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pr_debug("\n");
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}
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