media: rc: new driver for early iMon device
These devices were supported by the lirc_imon.c driver which was removed
from staging in commit f41003a23a ("[media] staging: lirc_imon: port
remaining usb ids to imon and remove").
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sean Young
Mauro Carvalho Chehab
parent
572eca036d
commit
8a4e8f8dfc
|
|
@ -6903,6 +6903,13 @@ M: James Hogan <jhogan@kernel.org>
|
|||
S: Maintained
|
||||
F: drivers/media/rc/img-ir/
|
||||
|
||||
IMON SOUNDGRAPH USB IR RECEIVER
|
||||
M: Sean Young <sean@mess.org>
|
||||
L: linux-media@vger.kernel.org
|
||||
S: Maintained
|
||||
F: drivers/media/rc/imon_raw.c
|
||||
F: drivers/media/rc/imon.c
|
||||
|
||||
IMS TWINTURBO FRAMEBUFFER DRIVER
|
||||
L: linux-fbdev@vger.kernel.org
|
||||
S: Orphan
|
||||
|
|
|
|||
|
|
@ -175,6 +175,18 @@ config IR_IMON
|
|||
To compile this driver as a module, choose M here: the
|
||||
module will be called imon.
|
||||
|
||||
config IR_IMON_RAW
|
||||
tristate "SoundGraph iMON Receiver (early raw IR models)"
|
||||
depends on USB_ARCH_HAS_HCD
|
||||
depends on RC_CORE
|
||||
select USB
|
||||
---help---
|
||||
Say Y here if you want to use a SoundGraph iMON IR Receiver,
|
||||
early raw models.
|
||||
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called imon_raw.
|
||||
|
||||
config IR_MCEUSB
|
||||
tristate "Windows Media Center Ed. eHome Infrared Transceiver"
|
||||
depends on USB_ARCH_HAS_HCD
|
||||
|
|
|
|||
|
|
@ -19,6 +19,7 @@ obj-$(CONFIG_IR_XMP_DECODER) += ir-xmp-decoder.o
|
|||
obj-$(CONFIG_RC_ATI_REMOTE) += ati_remote.o
|
||||
obj-$(CONFIG_IR_HIX5HD2) += ir-hix5hd2.o
|
||||
obj-$(CONFIG_IR_IMON) += imon.o
|
||||
obj-$(CONFIG_IR_IMON_RAW) += imon_raw.o
|
||||
obj-$(CONFIG_IR_ITE_CIR) += ite-cir.o
|
||||
obj-$(CONFIG_IR_MCEUSB) += mceusb.o
|
||||
obj-$(CONFIG_IR_FINTEK) += fintek-cir.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,199 @@
|
|||
// SPDX-License-Identifier: GPL-2.0+
|
||||
//
|
||||
// Copyright (C) 2018 Sean Young <sean@mess.org>
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/usb.h>
|
||||
#include <linux/usb/input.h>
|
||||
#include <media/rc-core.h>
|
||||
|
||||
/* Each bit is 250us */
|
||||
#define BIT_DURATION 250000
|
||||
|
||||
struct imon {
|
||||
struct device *dev;
|
||||
struct urb *ir_urb;
|
||||
struct rc_dev *rcdev;
|
||||
u8 ir_buf[8];
|
||||
char phys[64];
|
||||
};
|
||||
|
||||
/*
|
||||
* ffs/find_next_bit() searches in the wrong direction, so open-code our own.
|
||||
*/
|
||||
static inline int is_bit_set(const u8 *buf, int bit)
|
||||
{
|
||||
return buf[bit / 8] & (0x80 >> (bit & 7));
|
||||
}
|
||||
|
||||
static void imon_ir_data(struct imon *imon)
|
||||
{
|
||||
DEFINE_IR_RAW_EVENT(rawir);
|
||||
int offset = 0, size = 5 * 8;
|
||||
int bit;
|
||||
|
||||
dev_dbg(imon->dev, "data: %*ph", 8, imon->ir_buf);
|
||||
|
||||
while (offset < size) {
|
||||
bit = offset;
|
||||
while (!is_bit_set(imon->ir_buf, bit) && bit < size)
|
||||
bit++;
|
||||
dev_dbg(imon->dev, "pulse: %d bits", bit - offset);
|
||||
if (bit > offset) {
|
||||
rawir.pulse = true;
|
||||
rawir.duration = (bit - offset) * BIT_DURATION;
|
||||
ir_raw_event_store_with_filter(imon->rcdev, &rawir);
|
||||
}
|
||||
|
||||
if (bit >= size)
|
||||
break;
|
||||
|
||||
offset = bit;
|
||||
while (is_bit_set(imon->ir_buf, bit) && bit < size)
|
||||
bit++;
|
||||
dev_dbg(imon->dev, "space: %d bits", bit - offset);
|
||||
|
||||
rawir.pulse = false;
|
||||
rawir.duration = (bit - offset) * BIT_DURATION;
|
||||
ir_raw_event_store_with_filter(imon->rcdev, &rawir);
|
||||
|
||||
offset = bit;
|
||||
}
|
||||
|
||||
if (imon->ir_buf[7] == 0x0a) {
|
||||
ir_raw_event_set_idle(imon->rcdev, true);
|
||||
ir_raw_event_handle(imon->rcdev);
|
||||
}
|
||||
}
|
||||
|
||||
static void imon_ir_rx(struct urb *urb)
|
||||
{
|
||||
struct imon *imon = urb->context;
|
||||
int ret;
|
||||
|
||||
switch (urb->status) {
|
||||
case 0:
|
||||
if (imon->ir_buf[7] != 0xff)
|
||||
imon_ir_data(imon);
|
||||
break;
|
||||
case -ECONNRESET:
|
||||
case -ENOENT:
|
||||
case -ESHUTDOWN:
|
||||
usb_unlink_urb(urb);
|
||||
return;
|
||||
case -EPIPE:
|
||||
default:
|
||||
dev_dbg(imon->dev, "error: urb status = %d", urb->status);
|
||||
break;
|
||||
}
|
||||
|
||||
ret = usb_submit_urb(urb, GFP_ATOMIC);
|
||||
if (ret && ret != -ENODEV)
|
||||
dev_warn(imon->dev, "failed to resubmit urb: %d", ret);
|
||||
}
|
||||
|
||||
static int imon_probe(struct usb_interface *intf,
|
||||
const struct usb_device_id *id)
|
||||
{
|
||||
struct usb_endpoint_descriptor *ir_ep = NULL;
|
||||
struct usb_host_interface *idesc;
|
||||
struct usb_device *udev;
|
||||
struct rc_dev *rcdev;
|
||||
struct imon *imon;
|
||||
int i, ret;
|
||||
|
||||
udev = interface_to_usbdev(intf);
|
||||
idesc = intf->cur_altsetting;
|
||||
|
||||
for (i = 0; i < idesc->desc.bNumEndpoints; i++) {
|
||||
struct usb_endpoint_descriptor *ep = &idesc->endpoint[i].desc;
|
||||
|
||||
if (usb_endpoint_is_int_in(ep)) {
|
||||
ir_ep = ep;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!ir_ep) {
|
||||
dev_err(&intf->dev, "IR endpoint missing");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
imon = devm_kmalloc(&intf->dev, sizeof(*imon), GFP_KERNEL);
|
||||
if (!imon)
|
||||
return -ENOMEM;
|
||||
|
||||
imon->ir_urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
if (!imon->ir_urb)
|
||||
return -ENOMEM;
|
||||
|
||||
imon->dev = &intf->dev;
|
||||
usb_fill_int_urb(imon->ir_urb, udev,
|
||||
usb_rcvintpipe(udev, ir_ep->bEndpointAddress),
|
||||
imon->ir_buf, sizeof(imon->ir_buf),
|
||||
imon_ir_rx, imon, ir_ep->bInterval);
|
||||
|
||||
rcdev = devm_rc_allocate_device(&intf->dev, RC_DRIVER_IR_RAW);
|
||||
if (!rcdev) {
|
||||
ret = -ENOMEM;
|
||||
goto free_urb;
|
||||
}
|
||||
|
||||
usb_make_path(udev, imon->phys, sizeof(imon->phys));
|
||||
|
||||
rcdev->device_name = "iMON Station";
|
||||
rcdev->driver_name = KBUILD_MODNAME;
|
||||
rcdev->input_phys = imon->phys;
|
||||
usb_to_input_id(udev, &rcdev->input_id);
|
||||
rcdev->dev.parent = &intf->dev;
|
||||
rcdev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
|
||||
rcdev->map_name = RC_MAP_IMON_RSC;
|
||||
rcdev->rx_resolution = BIT_DURATION;
|
||||
rcdev->priv = imon;
|
||||
|
||||
ret = devm_rc_register_device(&intf->dev, rcdev);
|
||||
if (ret)
|
||||
goto free_urb;
|
||||
|
||||
imon->rcdev = rcdev;
|
||||
|
||||
ret = usb_submit_urb(imon->ir_urb, GFP_KERNEL);
|
||||
if (ret)
|
||||
goto free_urb;
|
||||
|
||||
usb_set_intfdata(intf, imon);
|
||||
|
||||
return 0;
|
||||
|
||||
free_urb:
|
||||
usb_free_urb(imon->ir_urb);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void imon_disconnect(struct usb_interface *intf)
|
||||
{
|
||||
struct imon *imon = usb_get_intfdata(intf);
|
||||
|
||||
usb_kill_urb(imon->ir_urb);
|
||||
usb_free_urb(imon->ir_urb);
|
||||
}
|
||||
|
||||
static const struct usb_device_id imon_table[] = {
|
||||
/* SoundGraph iMON (IR only) -- sg_imon.inf */
|
||||
{ USB_DEVICE(0x04e8, 0xff30) },
|
||||
{}
|
||||
};
|
||||
|
||||
static struct usb_driver imon_driver = {
|
||||
.name = KBUILD_MODNAME,
|
||||
.probe = imon_probe,
|
||||
.disconnect = imon_disconnect,
|
||||
.id_table = imon_table
|
||||
};
|
||||
|
||||
module_usb_driver(imon_driver);
|
||||
|
||||
MODULE_DESCRIPTION("Early raw iMON IR devices");
|
||||
MODULE_AUTHOR("Sean Young <sean@mess.org>");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DEVICE_TABLE(usb, imon_table);
|
||||
Loading…
Reference in New Issue