diff options
Diffstat (limited to 'drivers/media/IR/streamzap.c')
| -rw-r--r-- | drivers/media/IR/streamzap.c | 572 |
1 files changed, 0 insertions, 572 deletions
diff --git a/drivers/media/IR/streamzap.c b/drivers/media/IR/streamzap.c deleted file mode 100644 index 3a20aef67d0..00000000000 --- a/drivers/media/IR/streamzap.c +++ /dev/null @@ -1,572 +0,0 @@ -/* - * Streamzap Remote Control driver - * - * Copyright (c) 2005 Christoph Bartelmus <lirc@bartelmus.de> - * Copyright (c) 2010 Jarod Wilson <jarod@wilsonet.com> - * - * This driver was based on the work of Greg Wickham and Adrian - * Dewhurst. It was substantially rewritten to support correct signal - * gaps and now maintains a delay buffer, which is used to present - * consistent timing behaviour to user space applications. Without the - * delay buffer an ugly hack would be required in lircd, which can - * cause sluggish signal decoding in certain situations. - * - * Ported to in-kernel ir-core interface by Jarod Wilson - * - * This driver is based on the USB skeleton driver packaged with the - * kernel; copyright (C) 2001-2003 Greg Kroah-Hartman (greg@kroah.com) - * - * 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; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/device.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/input.h> -#include <linux/usb.h> -#include <linux/usb/input.h> -#include <media/ir-core.h> - -#define DRIVER_VERSION "1.61" -#define DRIVER_NAME "streamzap" -#define DRIVER_DESC "Streamzap Remote Control driver" - -#ifdef CONFIG_USB_DEBUG -static int debug = 1; -#else -static int debug; -#endif - -#define USB_STREAMZAP_VENDOR_ID 0x0e9c -#define USB_STREAMZAP_PRODUCT_ID 0x0000 - -/* table of devices that work with this driver */ -static struct usb_device_id streamzap_table[] = { - /* Streamzap Remote Control */ - { USB_DEVICE(USB_STREAMZAP_VENDOR_ID, USB_STREAMZAP_PRODUCT_ID) }, - /* Terminating entry */ - { } -}; - -MODULE_DEVICE_TABLE(usb, streamzap_table); - -#define SZ_PULSE_MASK 0xf0 -#define SZ_SPACE_MASK 0x0f -#define SZ_TIMEOUT 0xff -#define SZ_RESOLUTION 256 - -/* number of samples buffered */ -#define SZ_BUF_LEN 128 - -/* from ir-rc5-sz-decoder.c */ -#ifdef CONFIG_IR_RC5_SZ_DECODER_MODULE -#define load_rc5_sz_decode() request_module("ir-rc5-sz-decoder") -#else -#define load_rc5_sz_decode() 0 -#endif - -enum StreamzapDecoderState { - PulseSpace, - FullPulse, - FullSpace, - IgnorePulse -}; - -/* structure to hold our device specific stuff */ -struct streamzap_ir { - - /* ir-core */ - struct ir_dev_props *props; - - /* core device info */ - struct device *dev; - struct input_dev *idev; - - /* usb */ - struct usb_device *usbdev; - struct usb_interface *interface; - struct usb_endpoint_descriptor *endpoint; - struct urb *urb_in; - - /* buffer & dma */ - unsigned char *buf_in; - dma_addr_t dma_in; - unsigned int buf_in_len; - - /* track what state we're in */ - enum StreamzapDecoderState decoder_state; - /* tracks whether we are currently receiving some signal */ - bool idle; - /* sum of signal lengths received since signal start */ - unsigned long sum; - /* start time of signal; necessary for gap tracking */ - struct timeval signal_last; - struct timeval signal_start; - bool timeout_enabled; - - char name[128]; - char phys[64]; -}; - - -/* local function prototypes */ -static int streamzap_probe(struct usb_interface *interface, - const struct usb_device_id *id); -static void streamzap_disconnect(struct usb_interface *interface); -static void streamzap_callback(struct urb *urb); -static int streamzap_suspend(struct usb_interface *intf, pm_message_t message); -static int streamzap_resume(struct usb_interface *intf); - -/* usb specific object needed to register this driver with the usb subsystem */ -static struct usb_driver streamzap_driver = { - .name = DRIVER_NAME, - .probe = streamzap_probe, - .disconnect = streamzap_disconnect, - .suspend = streamzap_suspend, - .resume = streamzap_resume, - .id_table = streamzap_table, -}; - -static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir) -{ - dev_dbg(sz->dev, "Storing %s with duration %u us\n", - (rawir.pulse ? "pulse" : "space"), rawir.duration); - ir_raw_event_store_with_filter(sz->idev, &rawir); -} - -static void sz_push_full_pulse(struct streamzap_ir *sz, - unsigned char value) -{ - DEFINE_IR_RAW_EVENT(rawir); - - if (sz->idle) { - long deltv; - - sz->signal_last = sz->signal_start; - do_gettimeofday(&sz->signal_start); - - deltv = sz->signal_start.tv_sec - sz->signal_last.tv_sec; - rawir.pulse = false; - if (deltv > 15) { - /* really long time */ - rawir.duration = IR_MAX_DURATION; - } else { - rawir.duration = (int)(deltv * 1000000 + - sz->signal_start.tv_usec - - sz->signal_last.tv_usec); - rawir.duration -= sz->sum; - rawir.duration *= 1000; - rawir.duration &= IR_MAX_DURATION; - } - sz_push(sz, rawir); - - sz->idle = false; - sz->sum = 0; - } - - rawir.pulse = true; - rawir.duration = ((int) value) * SZ_RESOLUTION; - rawir.duration += SZ_RESOLUTION / 2; - sz->sum += rawir.duration; - rawir.duration *= 1000; - rawir.duration &= IR_MAX_DURATION; - sz_push(sz, rawir); -} - -static void sz_push_half_pulse(struct streamzap_ir *sz, - unsigned char value) -{ - sz_push_full_pulse(sz, (value & SZ_PULSE_MASK) >> 4); -} - -static void sz_push_full_space(struct streamzap_ir *sz, - unsigned char value) -{ - DEFINE_IR_RAW_EVENT(rawir); - - rawir.pulse = false; - rawir.duration = ((int) value) * SZ_RESOLUTION; - rawir.duration += SZ_RESOLUTION / 2; - sz->sum += rawir.duration; - rawir.duration *= 1000; - sz_push(sz, rawir); -} - -static void sz_push_half_space(struct streamzap_ir *sz, - unsigned long value) -{ - sz_push_full_space(sz, value & SZ_SPACE_MASK); -} - -/** - * streamzap_callback - usb IRQ handler callback - * - * This procedure is invoked on reception of data from - * the usb remote. - */ -static void streamzap_callback(struct urb *urb) -{ - struct streamzap_ir *sz; - unsigned int i; - int len; - - if (!urb) - return; - - sz = urb->context; - len = urb->actual_length; - - switch (urb->status) { - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* - * this urb is terminated, clean up. - * sz might already be invalid at this point - */ - dev_err(sz->dev, "urb terminated, status: %d\n", urb->status); - return; - default: - break; - } - - dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len); - for (i = 0; i < len; i++) { - dev_dbg(sz->dev, "sz->buf_in[%d]: %x\n", - i, (unsigned char)sz->buf_in[i]); - switch (sz->decoder_state) { - case PulseSpace: - if ((sz->buf_in[i] & SZ_PULSE_MASK) == - SZ_PULSE_MASK) { - sz->decoder_state = FullPulse; - continue; - } else if ((sz->buf_in[i] & SZ_SPACE_MASK) - == SZ_SPACE_MASK) { - sz_push_half_pulse(sz, sz->buf_in[i]); - sz->decoder_state = FullSpace; - continue; - } else { - sz_push_half_pulse(sz, sz->buf_in[i]); - sz_push_half_space(sz, sz->buf_in[i]); - } - break; - case FullPulse: - sz_push_full_pulse(sz, sz->buf_in[i]); - sz->decoder_state = IgnorePulse; - break; - case FullSpace: - if (sz->buf_in[i] == SZ_TIMEOUT) { - DEFINE_IR_RAW_EVENT(rawir); - - rawir.pulse = false; - rawir.duration = sz->props->timeout; - sz->idle = true; - if (sz->timeout_enabled) - sz_push(sz, rawir); - ir_raw_event_handle(sz->idev); - } else { - sz_push_full_space(sz, sz->buf_in[i]); - } - sz->decoder_state = PulseSpace; - break; - case IgnorePulse: - if ((sz->buf_in[i] & SZ_SPACE_MASK) == - SZ_SPACE_MASK) { - sz->decoder_state = FullSpace; - continue; - } - sz_push_half_space(sz, sz->buf_in[i]); - sz->decoder_state = PulseSpace; - break; - } - } - - usb_submit_urb(urb, GFP_ATOMIC); - - return; -} - -static struct input_dev *streamzap_init_input_dev(struct streamzap_ir *sz) -{ - struct input_dev *idev; - struct ir_dev_props *props; - struct device *dev = sz->dev; - int ret; - - idev = input_allocate_device(); - if (!idev) { - dev_err(dev, "remote input dev allocation failed\n"); - goto idev_alloc_failed; - } - - props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL); - if (!props) { - dev_err(dev, "remote ir dev props allocation failed\n"); - goto props_alloc_failed; - } - - snprintf(sz->name, sizeof(sz->name), "Streamzap PC Remote Infrared " - "Receiver (%04x:%04x)", - le16_to_cpu(sz->usbdev->descriptor.idVendor), - le16_to_cpu(sz->usbdev->descriptor.idProduct)); - - idev->name = sz->name; - usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys)); - strlcat(sz->phys, "/input0", sizeof(sz->phys)); - idev->phys = sz->phys; - - props->priv = sz; - props->driver_type = RC_DRIVER_IR_RAW; - props->allowed_protos = IR_TYPE_ALL; - - sz->props = props; - - usb_to_input_id(sz->usbdev, &idev->id); - idev->dev.parent = sz->dev; - - ret = ir_input_register(idev, RC_MAP_STREAMZAP, props, DRIVER_NAME); - if (ret < 0) { - dev_err(dev, "remote input device register failed\n"); - goto irdev_failed; - } - - return idev; - -irdev_failed: - kfree(props); -props_alloc_failed: - input_free_device(idev); -idev_alloc_failed: - return NULL; -} - -/** - * streamzap_probe - * - * Called by usb-core to associated with a candidate device - * On any failure the return value is the ERROR - * On success return 0 - */ -static int __devinit streamzap_probe(struct usb_interface *intf, - const struct usb_device_id *id) -{ - struct usb_device *usbdev = interface_to_usbdev(intf); - struct usb_host_interface *iface_host; - struct streamzap_ir *sz = NULL; - char buf[63], name[128] = ""; - int retval = -ENOMEM; - int pipe, maxp; - - /* Allocate space for device driver specific data */ - sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL); - if (!sz) - return -ENOMEM; - - sz->usbdev = usbdev; - sz->interface = intf; - - /* Check to ensure endpoint information matches requirements */ - iface_host = intf->cur_altsetting; - - if (iface_host->desc.bNumEndpoints != 1) { - dev_err(&intf->dev, "%s: Unexpected desc.bNumEndpoints (%d)\n", - __func__, iface_host->desc.bNumEndpoints); - retval = -ENODEV; - goto free_sz; - } - - sz->endpoint = &(iface_host->endpoint[0].desc); - if ((sz->endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) - != USB_DIR_IN) { - dev_err(&intf->dev, "%s: endpoint doesn't match input device " - "02%02x\n", __func__, sz->endpoint->bEndpointAddress); - retval = -ENODEV; - goto free_sz; - } - - if ((sz->endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) - != USB_ENDPOINT_XFER_INT) { - dev_err(&intf->dev, "%s: endpoint attributes don't match xfer " - "02%02x\n", __func__, sz->endpoint->bmAttributes); - retval = -ENODEV; - goto free_sz; - } - - pipe = usb_rcvintpipe(usbdev, sz->endpoint->bEndpointAddress); - maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe)); - - if (maxp == 0) { - dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n", - __func__); - retval = -ENODEV; - goto free_sz; - } - - /* Allocate the USB buffer and IRQ URB */ - sz->buf_in = usb_alloc_coherent(usbdev, maxp, GFP_ATOMIC, &sz->dma_in); - if (!sz->buf_in) - goto free_sz; - - sz->urb_in = usb_alloc_urb(0, GFP_KERNEL); - if (!sz->urb_in) - goto free_buf_in; - - sz->dev = &intf->dev; - sz->buf_in_len = maxp; - - if (usbdev->descriptor.iManufacturer - && usb_string(usbdev, usbdev->descriptor.iManufacturer, - buf, sizeof(buf)) > 0) - strlcpy(name, buf, sizeof(name)); - - if (usbdev->descriptor.iProduct - && usb_string(usbdev, usbdev->descriptor.iProduct, - buf, sizeof(buf)) > 0) - snprintf(name + strlen(name), sizeof(name) - strlen(name), - " %s", buf); - - sz->idev = streamzap_init_input_dev(sz); - if (!sz->idev) - goto input_dev_fail; - - sz->idle = true; - sz->decoder_state = PulseSpace; - /* FIXME: don't yet have a way to set this */ - sz->timeout_enabled = true; - sz->props->timeout = (((SZ_TIMEOUT * SZ_RESOLUTION * 1000) & - IR_MAX_DURATION) | 0x03000000); - #if 0 - /* not yet supported, depends on patches from maxim */ - /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */ - sz->min_timeout = SZ_TIMEOUT * SZ_RESOLUTION * 1000; - sz->max_timeout = SZ_TIMEOUT * SZ_RESOLUTION * 1000; - #endif - - do_gettimeofday(&sz->signal_start); - - /* Complete final initialisations */ - usb_fill_int_urb(sz->urb_in, usbdev, pipe, sz->buf_in, - maxp, (usb_complete_t)streamzap_callback, - sz, sz->endpoint->bInterval); - sz->urb_in->transfer_dma = sz->dma_in; - sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; - - usb_set_intfdata(intf, sz); - - if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) - dev_err(sz->dev, "urb submit failed\n"); - - dev_info(sz->dev, "Registered %s on usb%d:%d\n", name, - usbdev->bus->busnum, usbdev->devnum); - - /* Load the streamzap not-quite-rc5 decoder too */ - load_rc5_sz_decode(); - - return 0; - -input_dev_fail: - usb_free_urb(sz->urb_in); -free_buf_in: - usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in); -free_sz: - kfree(sz); - - return retval; -} - -/** - * streamzap_disconnect - * - * Called by the usb core when the device is removed from the system. - * - * This routine guarantees that the driver will not submit any more urbs - * by clearing dev->usbdev. It is also supposed to terminate any currently - * active urbs. Unfortunately, usb_bulk_msg(), used in streamzap_read(), - * does not provide any way to do this. - */ -static void streamzap_disconnect(struct usb_interface *interface) -{ - struct streamzap_ir *sz = usb_get_intfdata(interface); - struct usb_device *usbdev = interface_to_usbdev(interface); - - usb_set_intfdata(interface, NULL); - - if (!sz) - return; - - sz->usbdev = NULL; - ir_input_unregister(sz->idev); - usb_kill_urb(sz->urb_in); - usb_free_urb(sz->urb_in); - usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in); - - kfree(sz); -} - -static int streamzap_suspend(struct usb_interface *intf, pm_message_t message) -{ - struct streamzap_ir *sz = usb_get_intfdata(intf); - - usb_kill_urb(sz->urb_in); - - return 0; -} - -static int streamzap_resume(struct usb_interface *intf) -{ - struct streamzap_ir *sz = usb_get_intfdata(intf); - - if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) { - dev_err(sz->dev, "Error sumbiting urb\n"); - return -EIO; - } - - return 0; -} - -/** - * streamzap_init - */ -static int __init streamzap_init(void) -{ - int ret; - - /* register this driver with the USB subsystem */ - ret = usb_register(&streamzap_driver); - if (ret < 0) - printk(KERN_ERR DRIVER_NAME ": usb register failed, " - "result = %d\n", ret); - - return ret; -} - -/** - * streamzap_exit - */ -static void __exit streamzap_exit(void) -{ - usb_deregister(&streamzap_driver); -} - - -module_init(streamzap_init); -module_exit(streamzap_exit); - -MODULE_AUTHOR("Jarod Wilson <jarod@wilsonet.com>"); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); - -module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Enable debugging messages"); |