139 lines
3.9 KiB
C
139 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/***************************************************************************
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* Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org> *
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* *
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* Based on Logitech G13 driver (v0.4) *
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* Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> *
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* *
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***************************************************************************/
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#include <linux/hid.h>
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#include <linux/hid-debug.h>
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#include <linux/input.h>
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#include "hid-ids.h"
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#include <linux/fb.h>
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#include <linux/vmalloc.h>
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#include <linux/backlight.h>
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#include <linux/lcd.h>
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#include <linux/leds.h>
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#include <linux/seq_file.h>
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#include <linux/debugfs.h>
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#include <linux/completion.h>
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#include <linux/uaccess.h>
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#include <linux/module.h>
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#include <media/rc-core.h>
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#include "hid-picolcd.h"
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int picolcd_raw_cir(struct picolcd_data *data,
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struct hid_report *report, u8 *raw_data, int size)
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{
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unsigned long flags;
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int i, w, sz;
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struct ir_raw_event rawir = {};
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/* ignore if rc_dev is NULL or status is shunned */
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spin_lock_irqsave(&data->lock, flags);
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if (!data->rc_dev || (data->status & PICOLCD_CIR_SHUN)) {
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spin_unlock_irqrestore(&data->lock, flags);
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return 1;
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}
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spin_unlock_irqrestore(&data->lock, flags);
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/* PicoLCD USB packets contain 16-bit intervals in network order,
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* with value negated for pulse. Intervals are in microseconds.
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*
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* Note: some userspace LIRC code for PicoLCD says negated values
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* for space - is it a matter of IR chip? (pulse for my TSOP2236)
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*
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* In addition, the first interval seems to be around 15000 + base
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* interval for non-first report of IR data - thus the quirk below
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* to get RC_CODE to understand Sony and JVC remotes I have at hand
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*/
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sz = size > 0 ? min((int)raw_data[0], size-1) : 0;
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for (i = 0; i+1 < sz; i += 2) {
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w = (raw_data[i] << 8) | (raw_data[i+1]);
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rawir.pulse = !!(w & 0x8000);
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rawir.duration = US_TO_NS(rawir.pulse ? (65536 - w) : w);
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/* Quirk!! - see above */
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if (i == 0 && rawir.duration > 15000000)
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rawir.duration -= 15000000;
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ir_raw_event_store(data->rc_dev, &rawir);
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}
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ir_raw_event_handle(data->rc_dev);
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return 1;
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}
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static int picolcd_cir_open(struct rc_dev *dev)
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{
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struct picolcd_data *data = dev->priv;
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unsigned long flags;
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spin_lock_irqsave(&data->lock, flags);
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data->status &= ~PICOLCD_CIR_SHUN;
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spin_unlock_irqrestore(&data->lock, flags);
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return 0;
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}
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static void picolcd_cir_close(struct rc_dev *dev)
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{
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struct picolcd_data *data = dev->priv;
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unsigned long flags;
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spin_lock_irqsave(&data->lock, flags);
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data->status |= PICOLCD_CIR_SHUN;
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spin_unlock_irqrestore(&data->lock, flags);
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}
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/* initialize CIR input device */
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int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report)
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{
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struct rc_dev *rdev;
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int ret = 0;
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rdev = rc_allocate_device(RC_DRIVER_IR_RAW);
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if (!rdev)
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return -ENOMEM;
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rdev->priv = data;
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rdev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
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rdev->open = picolcd_cir_open;
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rdev->close = picolcd_cir_close;
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rdev->device_name = data->hdev->name;
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rdev->input_phys = data->hdev->phys;
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rdev->input_id.bustype = data->hdev->bus;
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rdev->input_id.vendor = data->hdev->vendor;
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rdev->input_id.product = data->hdev->product;
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rdev->input_id.version = data->hdev->version;
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rdev->dev.parent = &data->hdev->dev;
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rdev->driver_name = PICOLCD_NAME;
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rdev->map_name = RC_MAP_RC6_MCE;
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rdev->timeout = MS_TO_NS(100);
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rdev->rx_resolution = US_TO_NS(1);
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ret = rc_register_device(rdev);
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if (ret)
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goto err;
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data->rc_dev = rdev;
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return 0;
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err:
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rc_free_device(rdev);
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return ret;
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}
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void picolcd_exit_cir(struct picolcd_data *data)
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{
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struct rc_dev *rdev = data->rc_dev;
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data->rc_dev = NULL;
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rc_unregister_device(rdev);
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}
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