* 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
* 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)
*
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
+#include <linux/device.h>
#include <linux/module.h>
-#include <linux/smp_lock.h>
-#include <linux/completion.h>
-#include <linux/uaccess.h>
+#include <linux/slab.h>
#include <linux/usb.h>
+#include <linux/input.h>
+#include <media/ir-core.h>
-#include <media/lirc.h>
-#include <media/lirc_dev.h>
-
-#define DRIVER_VERSION "1.28"
-#define DRIVER_NAME "lirc_streamzap"
+#define DRIVER_VERSION "1.60"
+#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
-/* Use our own dbg macro */
-#define dprintk(fmt, args...) \
- do { \
- if (debug) \
- printk(KERN_DEBUG DRIVER_NAME "[%d]: " \
- fmt "\n", ## args); \
- } while (0)
-
/* table of devices that work with this driver */
static struct usb_device_id streamzap_table[] = {
/* Streamzap Remote Control */
#define STREAMZAP_RESOLUTION 256
/* number of samples buffered */
-#define STREAMZAP_BUF_LEN 128
+#define SZ_BUF_LEN 128
enum StreamzapDecoderState {
PulseSpace,
IgnorePulse
};
-/* Structure to hold all of our device specific stuff
- *
- * some remarks regarding locking:
- * theoretically this struct can be accessed from three threads:
- *
- * - from lirc_dev through set_use_inc/set_use_dec
- *
- * - from the USB layer throuh probe/disconnect/irq
- *
- * Careful placement of lirc_register_driver/lirc_unregister_driver
- * calls will prevent conflicts. lirc_dev makes sure that
- * set_use_inc/set_use_dec are not being executed and will not be
- * called after lirc_unregister_driver returns.
- *
- * - by the timer callback
- *
- * The timer is only running when the device is connected and the
- * LIRC device is open. Making sure the timer is deleted by
- * set_use_dec will make conflicts impossible.
- */
-struct usb_streamzap {
+/* structure to hold our device specific stuff */
+struct streamzap_ir {
+
+ /* ir-core */
+ struct ir_dev_props *props;
+ struct ir_raw_event rawir;
+
+ /* core device info */
+ struct device *dev;
+ struct input_dev *idev;
/* usb */
- /* save off the usb device pointer */
- struct usb_device *udev;
- /* the interface for this device */
+ 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;
- struct usb_endpoint_descriptor *endpoint;
-
- /* IRQ */
- struct urb *urb_in;
-
- /* lirc */
- struct lirc_driver *driver;
- struct lirc_buffer *delay_buf;
-
/* timer used to support delay buffering */
struct timer_list delay_timer;
- int timer_running;
+ bool timer_running;
spinlock_t timer_lock;
+ struct timer_list flush_timer;
+ bool flush;
+
+ /* delay buffer */
+ struct kfifo fifo;
+ bool fifo_initialized;
+ /* track what state we're in */
+ enum StreamzapDecoderState decoder_state;
/* tracks whether we are currently receiving some signal */
- int idle;
+ 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;
- enum StreamzapDecoderState decoder_state;
- struct timer_list flush_timer;
- int flush;
- int in_use;
- int timeout_enabled;
+ /* bool timeout_enabled; */
+
+ char name[128];
+ char phys[64];
};
static int streamzap_probe(struct usb_interface *interface,
const struct usb_device_id *id);
static void streamzap_disconnect(struct usb_interface *interface);
-static void usb_streamzap_irq(struct urb *urb);
-static int streamzap_use_inc(void *data);
-static void streamzap_use_dec(void *data);
-static long streamzap_ioctl(struct file *filep, unsigned int cmd,
- unsigned long arg);
+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,
.id_table = streamzap_table,
};
-static void stop_timer(struct usb_streamzap *sz)
+static void streamzap_stop_timer(struct streamzap_ir *sz)
{
unsigned long flags;
spin_lock_irqsave(&sz->timer_lock, flags);
if (sz->timer_running) {
- sz->timer_running = 0;
+ sz->timer_running = false;
spin_unlock_irqrestore(&sz->timer_lock, flags);
del_timer_sync(&sz->delay_timer);
} else {
}
}
-static void flush_timeout(unsigned long arg)
+static void streamzap_flush_timeout(unsigned long arg)
{
- struct usb_streamzap *sz = (struct usb_streamzap *) arg;
+ struct streamzap_ir *sz = (struct streamzap_ir *)arg;
+
+ dev_info(sz->dev, "%s: callback firing\n", __func__);
/* finally start accepting data */
- sz->flush = 0;
+ sz->flush = false;
}
-static void delay_timeout(unsigned long arg)
+
+static void streamzap_delay_timeout(unsigned long arg)
{
+ struct streamzap_ir *sz = (struct streamzap_ir *)arg;
+ struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
unsigned long flags;
+ int len, ret;
+ static unsigned long delay;
+ bool wake = false;
+
/* deliver data every 10 ms */
- static unsigned long timer_inc =
- (10000/(1000000/HZ)) == 0 ? 1 : (10000/(1000000/HZ));
- struct usb_streamzap *sz = (struct usb_streamzap *) arg;
- int data;
+ delay = msecs_to_jiffies(10);
spin_lock_irqsave(&sz->timer_lock, flags);
- if (!lirc_buffer_empty(sz->delay_buf) &&
- !lirc_buffer_full(sz->driver->rbuf)) {
- lirc_buffer_read(sz->delay_buf, (unsigned char *) &data);
- lirc_buffer_write(sz->driver->rbuf, (unsigned char *) &data);
+ if (kfifo_len(&sz->fifo) > 0) {
+ ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
+ if (ret != sizeof(rawir))
+ dev_err(sz->dev, "Problem w/kfifo_out...\n");
+ ir_raw_event_store(sz->idev, &rawir);
+ wake = true;
}
- if (!lirc_buffer_empty(sz->delay_buf)) {
- while (lirc_buffer_available(sz->delay_buf) <
- STREAMZAP_BUF_LEN / 2 &&
- !lirc_buffer_full(sz->driver->rbuf)) {
- lirc_buffer_read(sz->delay_buf,
- (unsigned char *) &data);
- lirc_buffer_write(sz->driver->rbuf,
- (unsigned char *) &data);
- }
- if (sz->timer_running) {
- sz->delay_timer.expires = jiffies + timer_inc;
- add_timer(&sz->delay_timer);
+
+ len = kfifo_len(&sz->fifo);
+ if (len > 0) {
+ while ((len < SZ_BUF_LEN / 2) &&
+ (len < SZ_BUF_LEN * sizeof(int))) {
+ ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
+ if (ret != sizeof(rawir))
+ dev_err(sz->dev, "Problem w/kfifo_out...\n");
+ ir_raw_event_store(sz->idev, &rawir);
+ wake = true;
+ len = kfifo_len(&sz->fifo);
}
+ if (sz->timer_running)
+ mod_timer(&sz->delay_timer, jiffies + delay);
+
} else {
- sz->timer_running = 0;
+ sz->timer_running = false;
}
- if (!lirc_buffer_empty(sz->driver->rbuf))
- wake_up(&sz->driver->rbuf->wait_poll);
+ if (wake)
+ ir_raw_event_handle(sz->idev);
spin_unlock_irqrestore(&sz->timer_lock, flags);
}
-static void flush_delay_buffer(struct usb_streamzap *sz)
+static void streamzap_flush_delay_buffer(struct streamzap_ir *sz)
{
- int data;
- int empty = 1;
-
- while (!lirc_buffer_empty(sz->delay_buf)) {
- empty = 0;
- lirc_buffer_read(sz->delay_buf, (unsigned char *) &data);
- if (!lirc_buffer_full(sz->driver->rbuf)) {
- lirc_buffer_write(sz->driver->rbuf,
- (unsigned char *) &data);
- } else {
- dprintk("buffer overflow", sz->driver->minor);
- }
+ struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
+ bool wake = false;
+ int ret;
+
+ while (kfifo_len(&sz->fifo) > 0) {
+ ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
+ if (ret != sizeof(rawir))
+ dev_err(sz->dev, "Problem w/kfifo_out...\n");
+ ir_raw_event_store(sz->idev, &rawir);
+ wake = true;
}
- if (!empty)
- wake_up(&sz->driver->rbuf->wait_poll);
+
+ if (wake)
+ ir_raw_event_handle(sz->idev);
}
-static void push(struct usb_streamzap *sz, unsigned char *data)
+static void sz_push(struct streamzap_ir *sz)
{
+ struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
unsigned long flags;
+ int ret;
spin_lock_irqsave(&sz->timer_lock, flags);
- if (lirc_buffer_full(sz->delay_buf)) {
- int read_data;
-
- lirc_buffer_read(sz->delay_buf,
- (unsigned char *) &read_data);
- if (!lirc_buffer_full(sz->driver->rbuf)) {
- lirc_buffer_write(sz->driver->rbuf,
- (unsigned char *) &read_data);
- } else {
- dprintk("buffer overflow", sz->driver->minor);
- }
+ if (kfifo_len(&sz->fifo) >= sizeof(int) * SZ_BUF_LEN) {
+ ret = kfifo_out(&sz->fifo, &rawir, sizeof(rawir));
+ if (ret != sizeof(rawir))
+ dev_err(sz->dev, "Problem w/kfifo_out...\n");
+ ir_raw_event_store(sz->idev, &rawir);
}
- lirc_buffer_write(sz->delay_buf, data);
+ kfifo_in(&sz->fifo, &sz->rawir, sizeof(rawir));
if (!sz->timer_running) {
- sz->delay_timer.expires = jiffies + HZ/10;
+ sz->delay_timer.expires = jiffies + (HZ / 10);
add_timer(&sz->delay_timer);
- sz->timer_running = 1;
+ sz->timer_running = true;
}
spin_unlock_irqrestore(&sz->timer_lock, flags);
}
-static void push_full_pulse(struct usb_streamzap *sz,
- unsigned char value)
+static void sz_push_full_pulse(struct streamzap_ir *sz,
+ unsigned char value)
{
- int pulse;
-
if (sz->idle) {
long deltv;
- int tmp;
sz->signal_last = sz->signal_start;
do_gettimeofday(&sz->signal_start);
- deltv = sz->signal_start.tv_sec-sz->signal_last.tv_sec;
+ deltv = sz->signal_start.tv_sec - sz->signal_last.tv_sec;
+ sz->rawir.pulse = false;
if (deltv > 15) {
/* really long time */
- tmp = LIRC_SPACE(LIRC_VALUE_MASK);
+ sz->rawir.duration = IR_MAX_DURATION;
} else {
- tmp = (int) (deltv*1000000+
- sz->signal_start.tv_usec -
- sz->signal_last.tv_usec);
- tmp -= sz->sum;
- tmp = LIRC_SPACE(tmp);
+ sz->rawir.duration = (int)(deltv * 1000000 +
+ sz->signal_start.tv_usec -
+ sz->signal_last.tv_usec);
+ sz->rawir.duration -= sz->sum;
+ sz->rawir.duration *= 1000;
+ sz->rawir.duration &= IR_MAX_DURATION;
}
- dprintk("ls %u", sz->driver->minor, tmp);
- push(sz, (char *)&tmp);
+ dev_dbg(sz->dev, "ls %u\n", sz->rawir.duration);
+ sz_push(sz);
sz->idle = 0;
sz->sum = 0;
}
- pulse = ((int) value) * STREAMZAP_RESOLUTION;
- pulse += STREAMZAP_RESOLUTION / 2;
- sz->sum += pulse;
- pulse = LIRC_PULSE(pulse);
-
- dprintk("p %u", sz->driver->minor, pulse & PULSE_MASK);
- push(sz, (char *)&pulse);
+ sz->rawir.pulse = true;
+ sz->rawir.duration = ((int) value) * STREAMZAP_RESOLUTION;
+ sz->rawir.duration += STREAMZAP_RESOLUTION / 2;
+ sz->sum += sz->rawir.duration;
+ sz->rawir.duration *= 1000;
+ sz->rawir.duration &= IR_MAX_DURATION;
+ dev_dbg(sz->dev, "p %u\n", sz->rawir.duration);
+ sz_push(sz);
}
-static void push_half_pulse(struct usb_streamzap *sz,
- unsigned char value)
+static void sz_push_half_pulse(struct streamzap_ir *sz,
+ unsigned char value)
{
- push_full_pulse(sz, (value & STREAMZAP_PULSE_MASK)>>4);
+ sz_push_full_pulse(sz, (value & STREAMZAP_PULSE_MASK) >> 4);
}
-static void push_full_space(struct usb_streamzap *sz,
- unsigned char value)
+static void sz_push_full_space(struct streamzap_ir *sz,
+ unsigned char value)
{
- int space;
-
- space = ((int) value)*STREAMZAP_RESOLUTION;
- space += STREAMZAP_RESOLUTION/2;
- sz->sum += space;
- space = LIRC_SPACE(space);
- dprintk("s %u", sz->driver->minor, space);
- push(sz, (char *)&space);
+ sz->rawir.pulse = false;
+ sz->rawir.duration = ((int) value) * STREAMZAP_RESOLUTION;
+ sz->rawir.duration += STREAMZAP_RESOLUTION / 2;
+ sz->sum += sz->rawir.duration;
+ sz->rawir.duration *= 1000;
+ dev_dbg(sz->dev, "s %u\n", sz->rawir.duration);
+ sz_push(sz);
}
-static void push_half_space(struct usb_streamzap *sz,
- unsigned char value)
+static void sz_push_half_space(struct streamzap_ir *sz,
+ unsigned long value)
{
- push_full_space(sz, value & STREAMZAP_SPACE_MASK);
+ sz_push_full_space(sz, value & STREAMZAP_SPACE_MASK);
}
/**
- * usb_streamzap_irq - IRQ handler
+ * streamzap_callback - usb IRQ handler callback
*
* This procedure is invoked on reception of data from
* the usb remote.
*/
-static void usb_streamzap_irq(struct urb *urb)
+static void streamzap_callback(struct urb *urb)
{
- struct usb_streamzap *sz;
- int len;
- unsigned int i = 0;
+ struct streamzap_ir *sz;
+ unsigned int i;
+ int len;
+ #if 0
+ static int timeout = (((STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION) &
+ IR_MAX_DURATION) | 0x03000000);
+ #endif
if (!urb)
return;
* this urb is terminated, clean up.
* sz might already be invalid at this point
*/
- dprintk("urb status: %d", -1, urb->status);
+ dev_err(sz->dev, "urb terminated, status: %d\n", urb->status);
return;
default:
break;
}
- dprintk("received %d", sz->driver->minor, urb->actual_length);
+ dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len);
if (!sz->flush) {
for (i = 0; i < urb->actual_length; i++) {
- dprintk("%d: %x", sz->driver->minor,
- i, (unsigned char) sz->buf_in[i]);
+ dev_dbg(sz->dev, "%d: %x\n", i,
+ (unsigned char)sz->buf_in[i]);
switch (sz->decoder_state) {
case PulseSpace:
- if ((sz->buf_in[i]&STREAMZAP_PULSE_MASK) ==
+ if ((sz->buf_in[i] & STREAMZAP_PULSE_MASK) ==
STREAMZAP_PULSE_MASK) {
sz->decoder_state = FullPulse;
continue;
- } else if ((sz->buf_in[i]&STREAMZAP_SPACE_MASK)
+ } else if ((sz->buf_in[i] & STREAMZAP_SPACE_MASK)
== STREAMZAP_SPACE_MASK) {
- push_half_pulse(sz, sz->buf_in[i]);
+ sz_push_half_pulse(sz, sz->buf_in[i]);
sz->decoder_state = FullSpace;
continue;
} else {
- push_half_pulse(sz, sz->buf_in[i]);
- push_half_space(sz, sz->buf_in[i]);
+ sz_push_half_pulse(sz, sz->buf_in[i]);
+ sz_push_half_space(sz, sz->buf_in[i]);
}
break;
case FullPulse:
- push_full_pulse(sz, sz->buf_in[i]);
+ sz_push_full_pulse(sz, sz->buf_in[i]);
sz->decoder_state = IgnorePulse;
break;
case FullSpace:
if (sz->buf_in[i] == STREAMZAP_TIMEOUT) {
sz->idle = 1;
- stop_timer(sz);
+ streamzap_stop_timer(sz);
+ #if 0
if (sz->timeout_enabled) {
- int timeout =
- LIRC_TIMEOUT
- (STREAMZAP_TIMEOUT *
- STREAMZAP_RESOLUTION);
- push(sz, (char *)&timeout);
+ sz->rawir.pulse = false;
+ sz->rawir.duration = timeout;
+ sz->rawir.duration *= 1000;
+ sz_push(sz);
}
- flush_delay_buffer(sz);
+ #endif
+ streamzap_flush_delay_buffer(sz);
} else
- push_full_space(sz, sz->buf_in[i]);
+ sz_push_full_space(sz, sz->buf_in[i]);
sz->decoder_state = PulseSpace;
break;
case IgnorePulse:
sz->decoder_state = FullSpace;
continue;
}
- push_half_space(sz, sz->buf_in[i]);
+ sz_push_half_space(sz, sz->buf_in[i]);
sz->decoder_state = PulseSpace;
break;
}
return;
}
-static const struct file_operations streamzap_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = streamzap_ioctl,
- .read = lirc_dev_fop_read,
- .write = lirc_dev_fop_write,
- .poll = lirc_dev_fop_poll,
- .open = lirc_dev_fop_open,
- .release = lirc_dev_fop_close,
-};
+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;
+ /* FIXME: not sure about supported protocols, check on this */
+ props->allowed_protos = IR_TYPE_RC5 | IR_TYPE_RC6;
+
+ sz->props = props;
+
+ ret = ir_input_register(idev, RC_MAP_RC5_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;
+}
+
+static int streamzap_delay_buf_init(struct streamzap_ir *sz)
+{
+ int ret;
+
+ ret = kfifo_alloc(&sz->fifo, sizeof(int) * SZ_BUF_LEN,
+ GFP_KERNEL);
+ if (ret == 0)
+ sz->fifo_initialized = 1;
+ return ret;
+}
+
+static void streamzap_start_flush_timer(struct streamzap_ir *sz)
+{
+ sz->flush_timer.expires = jiffies + HZ;
+ sz->flush = true;
+ add_timer(&sz->flush_timer);
+
+ sz->urb_in->dev = sz->usbdev;
+ if (usb_submit_urb(sz->urb_in, GFP_ATOMIC))
+ dev_err(sz->dev, "urb submit failed\n");
+}
/**
* streamzap_probe
* On any failure the return value is the ERROR
* On success return 0
*/
-static int streamzap_probe(struct usb_interface *interface,
- const struct usb_device_id *id)
+static int __devinit streamzap_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
{
- struct usb_device *udev = interface_to_usbdev(interface);
+ struct usb_device *usbdev = interface_to_usbdev(intf);
struct usb_host_interface *iface_host;
- struct usb_streamzap *sz;
- struct lirc_driver *driver;
- struct lirc_buffer *lirc_buf;
- struct lirc_buffer *delay_buf;
+ struct streamzap_ir *sz = NULL;
char buf[63], name[128] = "";
int retval = -ENOMEM;
- int minor = 0;
+ int pipe, maxp;
/* Allocate space for device driver specific data */
- sz = kzalloc(sizeof(struct usb_streamzap), GFP_KERNEL);
- if (sz == NULL)
+ sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL);
+ if (!sz)
return -ENOMEM;
- sz->udev = udev;
- sz->interface = interface;
+ sz->usbdev = usbdev;
+ sz->interface = intf;
/* Check to ensure endpoint information matches requirements */
- iface_host = interface->cur_altsetting;
+ iface_host = intf->cur_altsetting;
if (iface_host->desc.bNumEndpoints != 1) {
- err("%s: Unexpected desc.bNumEndpoints (%d)", __func__,
- iface_host->desc.bNumEndpoints);
+ 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) {
- err("%s: endpoint doesn't match input device 02%02x",
- __func__, sz->endpoint->bEndpointAddress);
+ 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) {
- err("%s: endpoint attributes don't match xfer 02%02x",
- __func__, sz->endpoint->bmAttributes);
+ dev_err(&intf->dev, "%s: endpoint attributes don't match xfer "
+ "02%02x\n", __func__, sz->endpoint->bmAttributes);
retval = -ENODEV;
goto free_sz;
}
- if (sz->endpoint->wMaxPacketSize == 0) {
- err("%s: endpoint message size==0? ", __func__);
+ 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_len = sz->endpoint->wMaxPacketSize;
- sz->buf_in = usb_alloc_coherent(sz->udev, sz->buf_in_len,
- GFP_ATOMIC, &sz->dma_in);
- if (sz->buf_in == NULL)
+ 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 == NULL)
- goto free_sz;
-
- /* Connect this device to the LIRC sub-system */
- driver = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
- if (!driver)
- goto free_sz;
+ if (!sz->urb_in)
+ goto free_buf_in;
- lirc_buf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
- if (!lirc_buf)
- goto free_driver;
- if (lirc_buffer_init(lirc_buf, sizeof(int), STREAMZAP_BUF_LEN))
- goto kfree_lirc_buf;
-
- delay_buf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
- if (!delay_buf)
- goto free_lirc_buf;
- if (lirc_buffer_init(delay_buf, sizeof(int), STREAMZAP_BUF_LEN))
- goto kfree_delay_buf;
-
- sz->driver = driver;
- strcpy(sz->driver->name, DRIVER_NAME);
- sz->driver->minor = -1;
- sz->driver->sample_rate = 0;
- sz->driver->code_length = sizeof(int) * 8;
- sz->driver->features = LIRC_CAN_REC_MODE2 |
- LIRC_CAN_GET_REC_RESOLUTION |
- LIRC_CAN_SET_REC_TIMEOUT;
- sz->driver->data = sz;
- sz->driver->min_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION;
- sz->driver->max_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION;
- sz->driver->rbuf = lirc_buf;
- sz->delay_buf = delay_buf;
- sz->driver->set_use_inc = &streamzap_use_inc;
- sz->driver->set_use_dec = &streamzap_use_dec;
- sz->driver->fops = &streamzap_fops;
- sz->driver->dev = &interface->dev;
- sz->driver->owner = THIS_MODULE;
-
- sz->idle = 1;
- sz->decoder_state = PulseSpace;
- init_timer(&sz->delay_timer);
- sz->delay_timer.function = delay_timeout;
- sz->delay_timer.data = (unsigned long) sz;
- sz->timer_running = 0;
- spin_lock_init(&sz->timer_lock);
-
- init_timer(&sz->flush_timer);
- sz->flush_timer.function = flush_timeout;
- sz->flush_timer.data = (unsigned long) sz;
- /* Complete final initialisations */
+ sz->dev = &intf->dev;
+ sz->buf_in_len = maxp;
- usb_fill_int_urb(sz->urb_in, udev,
- usb_rcvintpipe(udev, sz->endpoint->bEndpointAddress),
- sz->buf_in, sz->buf_in_len, usb_streamzap_irq, sz,
- sz->endpoint->bInterval);
- sz->urb_in->transfer_dma = sz->dma_in;
- sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-
- if (udev->descriptor.iManufacturer
- && usb_string(udev, udev->descriptor.iManufacturer,
+ if (usbdev->descriptor.iManufacturer
+ && usb_string(usbdev, usbdev->descriptor.iManufacturer,
buf, sizeof(buf)) > 0)
strlcpy(name, buf, sizeof(name));
- if (udev->descriptor.iProduct
- && usb_string(udev, udev->descriptor.iProduct,
+ if (usbdev->descriptor.iProduct
+ && usb_string(usbdev, usbdev->descriptor.iProduct,
buf, sizeof(buf)) > 0)
snprintf(name + strlen(name), sizeof(name) - strlen(name),
" %s", buf);
- minor = lirc_register_driver(driver);
-
- if (minor < 0)
- goto free_delay_buf;
-
- sz->driver->minor = minor;
-
- usb_set_intfdata(interface, sz);
-
- printk(KERN_INFO DRIVER_NAME "[%d]: %s on usb%d:%d attached\n",
- sz->driver->minor, name,
- udev->bus->busnum, sz->udev->devnum);
-
- return 0;
-
-free_delay_buf:
- lirc_buffer_free(sz->delay_buf);
-kfree_delay_buf:
- kfree(delay_buf);
-free_lirc_buf:
- lirc_buffer_free(sz->driver->rbuf);
-kfree_lirc_buf:
- kfree(lirc_buf);
-free_driver:
- kfree(driver);
-free_sz:
- if (retval == -ENOMEM)
- err("Out of memory");
-
- if (sz) {
- usb_free_urb(sz->urb_in);
- usb_free_coherent(udev, sz->buf_in_len, sz->buf_in, sz->dma_in);
- kfree(sz);
- }
-
- return retval;
-}
-
-static int streamzap_use_inc(void *data)
-{
- struct usb_streamzap *sz = data;
-
- if (!sz) {
- dprintk("%s called with no context", -1, __func__);
- return -EINVAL;
+ retval = streamzap_delay_buf_init(sz);
+ if (retval) {
+ dev_err(&intf->dev, "%s: delay buffer init failed\n", __func__);
+ goto free_urb_in;
}
- dprintk("set use inc", sz->driver->minor);
- lirc_buffer_clear(sz->driver->rbuf);
- lirc_buffer_clear(sz->delay_buf);
+ sz->idev = streamzap_init_input_dev(sz);
+ if (!sz->idev)
+ goto input_dev_fail;
- sz->flush_timer.expires = jiffies + HZ;
- sz->flush = 1;
- add_timer(&sz->flush_timer);
+ sz->idle = true;
+ sz->decoder_state = PulseSpace;
+ #if 0
+ /* not yet supported, depends on patches from maxim */
+ /* see also: LIRC_GET_REC_RESOLUTION and LIRC_SET_REC_TIMEOUT */
+ sz->timeout_enabled = false;
+ sz->min_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION * 1000;
+ sz->max_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION * 1000;
+ #endif
- sz->urb_in->dev = sz->udev;
- if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) {
- dprintk("open result = -EIO error submitting urb",
- sz->driver->minor);
- return -EIO;
- }
- sz->in_use++;
+ init_timer(&sz->delay_timer);
+ sz->delay_timer.function = streamzap_delay_timeout;
+ sz->delay_timer.data = (unsigned long)sz;
+ spin_lock_init(&sz->timer_lock);
- return 0;
-}
+ init_timer(&sz->flush_timer);
+ sz->flush_timer.function = streamzap_flush_timeout;
+ sz->flush_timer.data = (unsigned long)sz;
-static void streamzap_use_dec(void *data)
-{
- struct usb_streamzap *sz = data;
+ do_gettimeofday(&sz->signal_start);
- if (!sz) {
- dprintk("%s called with no context", -1, __func__);
- return;
- }
- dprintk("set use dec", sz->driver->minor);
+ /* 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;
- if (sz->flush) {
- sz->flush = 0;
- del_timer_sync(&sz->flush_timer);
- }
+ usb_set_intfdata(intf, sz);
- usb_kill_urb(sz->urb_in);
+ streamzap_start_flush_timer(sz);
- stop_timer(sz);
+ dev_info(sz->dev, "Registered %s on usb%d:%d\n", name,
+ usbdev->bus->busnum, usbdev->devnum);
- sz->in_use--;
-}
+ return 0;
-static long streamzap_ioctl(struct file *filep, unsigned int cmd,
- unsigned long arg)
-{
- int result = 0;
- int val;
- struct usb_streamzap *sz = lirc_get_pdata(filep);
+input_dev_fail:
+ kfifo_free(&sz->fifo);
+free_urb_in:
+ usb_free_urb(sz->urb_in);
+free_buf_in:
+ usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in);
+free_sz:
+ kfree(sz);
- switch (cmd) {
- case LIRC_GET_REC_RESOLUTION:
- result = put_user(STREAMZAP_RESOLUTION, (unsigned int *) arg);
- break;
- case LIRC_SET_REC_TIMEOUT:
- result = get_user(val, (int *)arg);
- if (result == 0) {
- if (val == STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION)
- sz->timeout_enabled = 1;
- else if (val == 0)
- sz->timeout_enabled = 0;
- else
- result = -EINVAL;
- }
- break;
- default:
- return lirc_dev_fop_ioctl(filep, cmd, arg);
- }
- return result;
+ return retval;
}
/**
* 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->udev. It is also supposed to terminate any currently
+ * 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 usb_streamzap *sz;
- int errnum;
- int minor;
-
- sz = usb_get_intfdata(interface);
+ struct streamzap_ir *sz = usb_get_intfdata(interface);
+ struct usb_device *usbdev = interface_to_usbdev(interface);
- /* unregister from the LIRC sub-system */
+ usb_set_intfdata(interface, NULL);
- errnum = lirc_unregister_driver(sz->driver->minor);
- if (errnum != 0)
- dprintk("error in lirc_unregister: (returned %d)",
- sz->driver->minor, errnum);
+ if (!sz)
+ return;
- lirc_buffer_free(sz->delay_buf);
- lirc_buffer_free(sz->driver->rbuf);
+ if (sz->flush) {
+ sz->flush = false;
+ del_timer_sync(&sz->flush_timer);
+ }
- /* unregister from the USB sub-system */
+ streamzap_stop_timer(sz);
+ 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);
- usb_free_coherent(sz->udev, sz->buf_in_len, sz->buf_in, sz->dma_in);
-
- minor = sz->driver->minor;
- kfree(sz->driver->rbuf);
- kfree(sz->driver);
- kfree(sz->delay_buf);
kfree(sz);
-
- printk(KERN_INFO DRIVER_NAME "[%d]: disconnected\n", minor);
}
static int streamzap_suspend(struct usb_interface *intf, pm_message_t message)
{
- struct usb_streamzap *sz = usb_get_intfdata(intf);
+ struct streamzap_ir *sz = usb_get_intfdata(intf);
- printk(KERN_INFO DRIVER_NAME "[%d]: suspend\n", sz->driver->minor);
- if (sz->in_use) {
- if (sz->flush) {
- sz->flush = 0;
- del_timer_sync(&sz->flush_timer);
- }
+ if (sz->flush) {
+ sz->flush = false;
+ del_timer_sync(&sz->flush_timer);
+ }
- stop_timer(sz);
+ streamzap_stop_timer(sz);
+
+ usb_kill_urb(sz->urb_in);
- usb_kill_urb(sz->urb_in);
- }
return 0;
}
static int streamzap_resume(struct usb_interface *intf)
{
- struct usb_streamzap *sz = usb_get_intfdata(intf);
+ struct streamzap_ir *sz = usb_get_intfdata(intf);
- lirc_buffer_clear(sz->driver->rbuf);
- lirc_buffer_clear(sz->delay_buf);
+ if (sz->fifo_initialized)
+ kfifo_reset(&sz->fifo);
- if (sz->in_use) {
- sz->flush_timer.expires = jiffies + HZ;
- sz->flush = 1;
- add_timer(&sz->flush_timer);
+ sz->flush_timer.expires = jiffies + HZ;
+ sz->flush = true;
+ add_timer(&sz->flush_timer);
- sz->urb_in->dev = sz->udev;
- if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) {
- dprintk("open result = -EIO error submitting urb",
- sz->driver->minor);
- return -EIO;
- }
+ if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) {
+ dev_err(sz->dev, "Error sumbiting urb\n");
+ return -EIO;
}
+
return 0;
}
/**
- * usb_streamzap_init
+ * streamzap_init
*/
-static int __init usb_streamzap_init(void)
+static int __init streamzap_init(void)
{
- int result;
+ int ret;
/* register this driver with the USB subsystem */
- result = usb_register(&streamzap_driver);
-
- if (result) {
- err("usb_register failed. Error number %d",
- result);
- return result;
- }
+ ret = usb_register(&streamzap_driver);
+ if (ret < 0)
+ printk(KERN_ERR DRIVER_NAME ": usb register failed, "
+ "result = %d\n", ret);
- printk(KERN_INFO DRIVER_NAME " " DRIVER_VERSION " registered\n");
- return 0;
+ return ret;
}
/**
- * usb_streamzap_exit
+ * streamzap_exit
*/
-static void __exit usb_streamzap_exit(void)
+static void __exit streamzap_exit(void)
{
usb_deregister(&streamzap_driver);
}
-module_init(usb_streamzap_init);
-module_exit(usb_streamzap_exit);
+module_init(streamzap_init);
+module_exit(streamzap_exit);
-MODULE_AUTHOR("Christoph Bartelmus, Greg Wickham, Adrian Dewhurst");
+MODULE_AUTHOR("Jarod Wilson <jarod@wilsonet.com>");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff