common/siano/smsir.c

0001 // SPDX-License-Identifier: GPL-2.0+
0002 //
0003 // Siano Mobile Silicon, Inc.
0004 // MDTV receiver kernel modules.
0005 // Copyright (C) 2006-2009, Uri Shkolnik
0006 //
0007 // Copyright (c) 2010 - Mauro Carvalho Chehab
0008 //  - Ported the driver to use rc-core
0009 //  - IR raw event decoding is now done at rc-core
0010 //  - Code almost re-written
0011
0012
0013 #include "smscoreapi.h"
0014
0015 #include <linux/types.h>
0016 #include <linux/input.h>
0017
0018 #include "smsir.h"
0019 #include "sms-cards.h"
0020
0021 #define MODULE_NAME "smsmdtv"
0022
0023 void sms_ir_event(struct smscore_device_t *coredev, const char *buf, int len)
0024 {
0025     int i;
0026     const s32 *samples = (const void *)buf;
0027
0028     for (i = 0; i < len >> 2; i++) {
0029         struct ir_raw_event ev = {
0030             .duration = abs(samples[i]),
0031             .pulse = (samples[i] > 0) ? false : true
0032         };
0033
0034         ir_raw_event_store(coredev->ir.dev, &ev);
0035     }
0036     ir_raw_event_handle(coredev->ir.dev);
0037 }
0038
0039 int sms_ir_init(struct smscore_device_t *coredev)
0040 {
0041     int err;
0042     int board_id = smscore_get_board_id(coredev);
0043     struct rc_dev *dev;
0044
0045     pr_debug("Allocating rc device\n");
0046     dev = rc_allocate_device(RC_DRIVER_IR_RAW);
0047     if (!dev)
0048         return -ENOMEM;
0049
0050     coredev->ir.controller = 0; /* Todo: vega/nova SPI number */
0051     coredev->ir.timeout = US_TO_NS(IR_DEFAULT_TIMEOUT);
0052     pr_debug("IR port %d, timeout %d ms\n",
0053             coredev->ir.controller, coredev->ir.timeout);
0054
0055     snprintf(coredev->ir.name, sizeof(coredev->ir.name),
0056          "SMS IR (%s)", sms_get_board(board_id)->name);
0057
0058     strscpy(coredev->ir.phys, coredev->devpath, sizeof(coredev->ir.phys));
0059     strlcat(coredev->ir.phys, "/ir0", sizeof(coredev->ir.phys));
0060
0061     dev->device_name = coredev->ir.name;
0062     dev->input_phys = coredev->ir.phys;
0063     dev->dev.parent = coredev->device;
0064
0065 #if 0
0066     /* TODO: properly initialize the parameters below */
0067     dev->input_id.bustype = BUS_USB;
0068     dev->input_id.version = 1;
0069     dev->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
0070     dev->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
0071 #endif
0072
0073     dev->priv = coredev;
0074     dev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
0075     dev->map_name = sms_get_board(board_id)->rc_codes;
0076     dev->driver_name = MODULE_NAME;
0077
0078     pr_debug("Input device (IR) %s is set for key events\n",
0079          dev->device_name);
0080
0081     err = rc_register_device(dev);
0082     if (err < 0) {
0083         pr_err("Failed to register device\n");
0084         rc_free_device(dev);
0085         return err;
0086     }
0087
0088     coredev->ir.dev = dev;
0089     return 0;
0090 }
0091
0092 void sms_ir_exit(struct smscore_device_t *coredev)
0093 {
0094     rc_unregister_device(coredev->ir.dev);
0095
0096     pr_debug("\n");
0097 }