/*************************************************************************** * Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org> * * * * Based on Logitech G13 driver (v0.4) * * Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> * * * * This program is free software: you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation, version 2 of the License. * * * * This driver is distributed in the hope that it will be useful, but * * WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * * General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this software. If not see <http://www.gnu.org/licenses/>. * ***************************************************************************/ #include <linux/hid.h> #include <linux/hid-debug.h> #include <linux/input.h> #include "hid-ids.h" #include <linux/fb.h> #include <linux/vmalloc.h> #include <linux/backlight.h> #include <linux/lcd.h> #include <linux/leds.h> #include <linux/seq_file.h> #include <linux/debugfs.h> #include <linux/completion.h> #include <linux/uaccess.h> #include <linux/module.h> #include <media/rc-core.h> #include "hid-picolcd.h" int picolcd_raw_cir(struct picolcd_data *data, struct hid_report *report, u8 *raw_data, int size) { unsigned long flags; int i, w, sz; DEFINE_IR_RAW_EVENT(rawir); /* ignore if rc_dev is NULL or status is shunned */ spin_lock_irqsave(&data->lock, flags); if (!data->rc_dev || (data->status & PICOLCD_CIR_SHUN)) { spin_unlock_irqrestore(&data->lock, flags); return 1; } spin_unlock_irqrestore(&data->lock, flags); /* PicoLCD USB packets contain 16-bit intervals in network order, * with value negated for pulse. Intervals are in microseconds. * * Note: some userspace LIRC code for PicoLCD says negated values * for space - is it a matter of IR chip? (pulse for my TSOP2236) * * In addition, the first interval seems to be around 15000 + base * interval for non-first report of IR data - thus the quirk below * to get RC_CODE to understand Sony and JVC remotes I have at hand */ sz = size > 0 ? min((int)raw_data[0], size-1) : 0; for (i = 0; i+1 < sz; i += 2) { init_ir_raw_event(&rawir); w = (raw_data[i] << 8) | (raw_data[i+1]); rawir.pulse = !!(w & 0x8000); rawir.duration = US_TO_NS(rawir.pulse ? (65536 - w) : w); /* Quirk!! - see above */ if (i == 0 && rawir.duration > 15000000) rawir.duration -= 15000000; ir_raw_event_store(data->rc_dev, &rawir); } ir_raw_event_handle(data->rc_dev); return 1; } static int picolcd_cir_open(struct rc_dev *dev) { struct picolcd_data *data = dev->priv; unsigned long flags; spin_lock_irqsave(&data->lock, flags); data->status &= ~PICOLCD_CIR_SHUN; spin_unlock_irqrestore(&data->lock, flags); return 0; } static void picolcd_cir_close(struct rc_dev *dev) { struct picolcd_data *data = dev->priv; unsigned long flags; spin_lock_irqsave(&data->lock, flags); data->status |= PICOLCD_CIR_SHUN; spin_unlock_irqrestore(&data->lock, flags); } /* initialize CIR input device */ int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report) { struct rc_dev *rdev; int ret = 0; rdev = rc_allocate_device(); if (!rdev) return -ENOMEM; rdev->priv = data; rdev->driver_type = RC_DRIVER_IR_RAW; rdev->allowed_protocols = RC_BIT_ALL; rdev->open = picolcd_cir_open; rdev->close = picolcd_cir_close; rdev->input_name = data->hdev->name; rdev->input_phys = data->hdev->phys; rdev->input_id.bustype = data->hdev->bus; rdev->input_id.vendor = data->hdev->vendor; rdev->input_id.product = data->hdev->product; rdev->input_id.version = data->hdev->version; rdev->dev.parent = &data->hdev->dev; rdev->driver_name = PICOLCD_NAME; rdev->map_name = RC_MAP_RC6_MCE; rdev->timeout = MS_TO_NS(100); rdev->rx_resolution = US_TO_NS(1); ret = rc_register_device(rdev); if (ret) goto err; data->rc_dev = rdev; return 0; err: rc_free_device(rdev); return ret; } void picolcd_exit_cir(struct picolcd_data *data) { struct rc_dev *rdev = data->rc_dev; data->rc_dev = NULL; if (rdev) rc_unregister_device(rdev); }