These devices were supported by the lirc_imon.c driver which was removed
from staging in commit f41003a23a02 ("[media] staging: lirc_imon: port
remaining usb ids to imon and remove").
Signed-off-by: Sean Young <sean@xxxxxxxx>
---
MAINTAINERS | 7 ++
drivers/media/rc/Kconfig | 12 +++
drivers/media/rc/Makefile | 1 +
drivers/media/rc/imon_raw.c | 199 ++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 219 insertions(+)
create mode 100644 drivers/media/rc/imon_raw.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 0eea2f0e9456..e1ac64c4830b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6903,6 +6903,13 @@ M: James Hogan <jhogan@xxxxxxxxxx>
S: Maintained
F: drivers/media/rc/img-ir/
+IMON SOUNDGRAPH USB IR RECEIVER
+M: Sean Young <sean@xxxxxxxx>
+L: linux-media@xxxxxxxxxxxxxxx
+S: Maintained
+F: drivers/media/rc/imon_raw.c
+F: drivers/media/rc/imon.c
+
IMS TWINTURBO FRAMEBUFFER DRIVER
L: linux-fbdev@xxxxxxxxxxxxxxx
S: Orphan
diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig
index 447f82c1f65a..7ad05a6ef350 100644
--- a/drivers/media/rc/Kconfig
+++ b/drivers/media/rc/Kconfig
@@ -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
diff --git a/drivers/media/rc/Makefile b/drivers/media/rc/Makefile
index 0e857816ac2d..e098e127b26a 100644
--- a/drivers/media/rc/Makefile
+++ b/drivers/media/rc/Makefile
@@ -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
diff --git a/drivers/media/rc/imon_raw.c b/drivers/media/rc/imon_raw.c
new file mode 100644
index 000000000000..32709f96de14
--- /dev/null
+++ b/drivers/media/rc/imon_raw.c
@@ -0,0 +1,199 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Copyright (C) 2018 Sean Young <sean@xxxxxxxx>
+
+#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@xxxxxxxx>");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(usb, imon_table);
--
2.14.3
