cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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smsir.c (2421B)

      1// SPDX-License-Identifier: GPL-2.0+
      2//
      3// Siano Mobile Silicon, Inc.
      4// MDTV receiver kernel modules.
      5// Copyright (C) 2006-2009, Uri Shkolnik
      6//
      7// Copyright (c) 2010 - Mauro Carvalho Chehab
      8//	- Ported the driver to use rc-core
      9//	- IR raw event decoding is now done at rc-core
     10//	- Code almost re-written
     11
     12
     13#include "smscoreapi.h"
     14
     15#include <linux/types.h>
     16#include <linux/input.h>
     17
     18#include "smsir.h"
     19#include "sms-cards.h"
     20
     21#define MODULE_NAME "smsmdtv"
     22
     23void sms_ir_event(struct smscore_device_t *coredev, const char *buf, int len)
     24{
     25	int i;
     26	const s32 *samples = (const void *)buf;
     27
     28	for (i = 0; i < len >> 2; i++) {
     29		struct ir_raw_event ev = {
     30			.duration = abs(samples[i]),
     31			.pulse = (samples[i] > 0) ? false : true
     32		};
     33
     34		ir_raw_event_store(coredev->ir.dev, &ev);
     35	}
     36	ir_raw_event_handle(coredev->ir.dev);
     37}
     38
     39int sms_ir_init(struct smscore_device_t *coredev)
     40{
     41	int err;
     42	int board_id = smscore_get_board_id(coredev);
     43	struct rc_dev *dev;
     44
     45	pr_debug("Allocating rc device\n");
     46	dev = rc_allocate_device(RC_DRIVER_IR_RAW);
     47	if (!dev)
     48		return -ENOMEM;
     49
     50	coredev->ir.controller = 0;	/* Todo: vega/nova SPI number */
     51	coredev->ir.timeout = US_TO_NS(IR_DEFAULT_TIMEOUT);
     52	pr_debug("IR port %d, timeout %d ms\n",
     53			coredev->ir.controller, coredev->ir.timeout);
     54
     55	snprintf(coredev->ir.name, sizeof(coredev->ir.name),
     56		 "SMS IR (%s)", sms_get_board(board_id)->name);
     57
     58	strscpy(coredev->ir.phys, coredev->devpath, sizeof(coredev->ir.phys));
     59	strlcat(coredev->ir.phys, "/ir0", sizeof(coredev->ir.phys));
     60
     61	dev->device_name = coredev->ir.name;
     62	dev->input_phys = coredev->ir.phys;
     63	dev->dev.parent = coredev->device;
     64
     65#if 0
     66	/* TODO: properly initialize the parameters below */
     67	dev->input_id.bustype = BUS_USB;
     68	dev->input_id.version = 1;
     69	dev->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
     70	dev->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
     71#endif
     72
     73	dev->priv = coredev;
     74	dev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
     75	dev->map_name = sms_get_board(board_id)->rc_codes;
     76	dev->driver_name = MODULE_NAME;
     77
     78	pr_debug("Input device (IR) %s is set for key events\n",
     79		 dev->device_name);
     80
     81	err = rc_register_device(dev);
     82	if (err < 0) {
     83		pr_err("Failed to register device\n");
     84		rc_free_device(dev);
     85		return err;
     86	}
     87
     88	coredev->ir.dev = dev;
     89	return 0;
     90}
     91
     92void sms_ir_exit(struct smscore_device_t *coredev)
     93{
     94	rc_unregister_device(coredev->ir.dev);
     95
     96	pr_debug("\n");
     97}