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path: root/drivers/media/rc/streamzap.c
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Diffstat (limited to 'drivers/media/rc/streamzap.c')
-rw-r--r--drivers/media/rc/streamzap.c122
1 files changed, 25 insertions, 97 deletions
diff --git a/drivers/media/rc/streamzap.c b/drivers/media/rc/streamzap.c
index 1cc5ebb85b6c..16ba85d7c090 100644
--- a/drivers/media/rc/streamzap.c
+++ b/drivers/media/rc/streamzap.c
@@ -21,12 +21,10 @@
#include <linux/device.h>
#include <linux/module.h>
#include <linux/slab.h>
-#include <linux/ktime.h>
#include <linux/usb.h>
#include <linux/usb/input.h>
#include <media/rc-core.h>
-#define DRIVER_VERSION "1.61"
#define DRIVER_NAME "streamzap"
#define DRIVER_DESC "Streamzap Remote Control driver"
@@ -67,9 +65,6 @@ struct streamzap_ir {
struct device *dev;
/* usb */
- struct usb_device *usbdev;
- struct usb_interface *interface;
- struct usb_endpoint_descriptor *endpoint;
struct urb *urb_in;
/* buffer & dma */
@@ -79,16 +74,7 @@ struct streamzap_ir {
/* 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 */
- ktime_t signal_last;
- ktime_t signal_start;
- bool timeout_enabled;
-
- char name[128];
+
char phys[64];
};
@@ -121,37 +107,11 @@ static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir)
static void sz_push_full_pulse(struct streamzap_ir *sz,
unsigned char value)
{
- struct ir_raw_event rawir = {};
-
- if (sz->idle) {
- int delta;
-
- sz->signal_last = sz->signal_start;
- sz->signal_start = ktime_get_real();
-
- delta = ktime_us_delta(sz->signal_start, sz->signal_last);
- rawir.pulse = false;
- if (delta > (15 * USEC_PER_SEC)) {
- /* really long time */
- rawir.duration = IR_MAX_DURATION;
- } else {
- rawir.duration = delta;
- rawir.duration -= sz->sum;
- rawir.duration = (rawir.duration > IR_MAX_DURATION) ?
- IR_MAX_DURATION : rawir.duration;
- }
- sz_push(sz, rawir);
+ struct ir_raw_event rawir = {
+ .pulse = true,
+ .duration = value * SZ_RESOLUTION + SZ_RESOLUTION / 2,
+ };
- 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 = (rawir.duration > IR_MAX_DURATION) ?
- IR_MAX_DURATION : rawir.duration;
sz_push(sz, rawir);
}
@@ -164,12 +124,11 @@ static void sz_push_half_pulse(struct streamzap_ir *sz,
static void sz_push_full_space(struct streamzap_ir *sz,
unsigned char value)
{
- struct ir_raw_event rawir = {};
+ struct ir_raw_event rawir = {
+ .pulse = false,
+ .duration = value * SZ_RESOLUTION + SZ_RESOLUTION / 2,
+ };
- rawir.pulse = false;
- rawir.duration = ((int) value) * SZ_RESOLUTION;
- rawir.duration += SZ_RESOLUTION / 2;
- sz->sum += rawir.duration;
sz_push(sz, rawir);
}
@@ -241,11 +200,7 @@ static void streamzap_callback(struct urb *urb)
.pulse = false,
.duration = sz->rdev->timeout
};
- sz->idle = true;
- if (sz->timeout_enabled)
- sz_push(sz, rawir);
- ir_raw_event_handle(sz->rdev);
- ir_raw_event_reset(sz->rdev);
+ sz_push(sz, rawir);
} else {
sz_push_full_space(sz, sz->buf_in[i]);
}
@@ -267,27 +222,23 @@ static void streamzap_callback(struct urb *urb)
usb_submit_urb(urb, GFP_ATOMIC);
}
-static struct rc_dev *streamzap_init_rc_dev(struct streamzap_ir *sz)
+static struct rc_dev *streamzap_init_rc_dev(struct streamzap_ir *sz,
+ struct usb_device *usbdev)
{
struct rc_dev *rdev;
struct device *dev = sz->dev;
int ret;
rdev = rc_allocate_device(RC_DRIVER_IR_RAW);
- if (!rdev) {
- dev_err(dev, "remote dev allocation failed\n");
+ if (!rdev)
goto out;
- }
- 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));
- usb_make_path(sz->usbdev, sz->phys, sizeof(sz->phys));
+ usb_make_path(usbdev, sz->phys, sizeof(sz->phys));
strlcat(sz->phys, "/input0", sizeof(sz->phys));
- rdev->device_name = sz->name;
+ rdev->device_name = "Streamzap PC Remote Infrared Receiver";
rdev->input_phys = sz->phys;
- usb_to_input_id(sz->usbdev, &rdev->input_id);
+ usb_to_input_id(usbdev, &rdev->input_id);
rdev->dev.parent = dev;
rdev->priv = sz;
rdev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
@@ -319,9 +270,9 @@ static int streamzap_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *usbdev = interface_to_usbdev(intf);
+ struct usb_endpoint_descriptor *endpoint;
struct usb_host_interface *iface_host;
struct streamzap_ir *sz = NULL;
- char buf[63], name[128] = "";
int retval = -ENOMEM;
int pipe, maxp;
@@ -330,9 +281,6 @@ static int streamzap_probe(struct usb_interface *intf,
if (!sz)
return -ENOMEM;
- sz->usbdev = usbdev;
- sz->interface = intf;
-
/* Check to ensure endpoint information matches requirements */
iface_host = intf->cur_altsetting;
@@ -343,22 +291,22 @@ static int streamzap_probe(struct usb_interface *intf,
goto free_sz;
}
- sz->endpoint = &(iface_host->endpoint[0].desc);
- if (!usb_endpoint_dir_in(sz->endpoint)) {
+ endpoint = &iface_host->endpoint[0].desc;
+ if (!usb_endpoint_dir_in(endpoint)) {
dev_err(&intf->dev, "%s: endpoint doesn't match input device 02%02x\n",
- __func__, sz->endpoint->bEndpointAddress);
+ __func__, endpoint->bEndpointAddress);
retval = -ENODEV;
goto free_sz;
}
- if (!usb_endpoint_xfer_int(sz->endpoint)) {
+ if (!usb_endpoint_xfer_int(endpoint)) {
dev_err(&intf->dev, "%s: endpoint attributes don't match xfer 02%02x\n",
- __func__, sz->endpoint->bmAttributes);
+ __func__, endpoint->bmAttributes);
retval = -ENODEV;
goto free_sz;
}
- pipe = usb_rcvintpipe(usbdev, sz->endpoint->bEndpointAddress);
+ pipe = usb_rcvintpipe(usbdev, endpoint->bEndpointAddress);
maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe));
if (maxp == 0) {
@@ -380,25 +328,12 @@ static int streamzap_probe(struct usb_interface *intf,
sz->dev = &intf->dev;
sz->buf_in_len = maxp;
- if (usbdev->descriptor.iManufacturer
- && usb_string(usbdev, usbdev->descriptor.iManufacturer,
- buf, sizeof(buf)) > 0)
- strscpy(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->rdev = streamzap_init_rc_dev(sz);
+ sz->rdev = streamzap_init_rc_dev(sz, usbdev);
if (!sz->rdev)
goto rc_dev_fail;
- sz->idle = true;
sz->decoder_state = PulseSpace;
/* FIXME: don't yet have a way to set this */
- sz->timeout_enabled = true;
sz->rdev->timeout = SZ_TIMEOUT * SZ_RESOLUTION;
#if 0
/* not yet supported, depends on patches from maxim */
@@ -407,12 +342,9 @@ static int streamzap_probe(struct usb_interface *intf,
sz->max_timeout = SZ_TIMEOUT * SZ_RESOLUTION;
#endif
- sz->signal_start = ktime_get_real();
-
/* 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);
+ maxp, streamzap_callback, sz, endpoint->bInterval);
sz->urb_in->transfer_dma = sz->dma_in;
sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
@@ -421,9 +353,6 @@ static int streamzap_probe(struct usb_interface *intf,
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);
-
return 0;
rc_dev_fail:
@@ -456,7 +385,6 @@ static void streamzap_disconnect(struct usb_interface *interface)
if (!sz)
return;
- sz->usbdev = NULL;
rc_unregister_device(sz->rdev);
usb_kill_urb(sz->urb_in);
usb_free_urb(sz->urb_in);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.