Signed-off-by: Sean Young <sean@xxxxxxxx>
---
drivers/media/rc/Kconfig | 2 ++
drivers/media/rc/redrat3.c | 83 ++++++++++++++++++++++++++++++++++++++++++++--
2 files changed, 82 insertions(+), 3 deletions(-)
diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig
index 7fa6b22..11e84bc 100644
--- a/drivers/media/rc/Kconfig
+++ b/drivers/media/rc/Kconfig
@@ -223,6 +223,8 @@ config IR_REDRAT3
tristate "RedRat3 IR Transceiver"
depends on USB_ARCH_HAS_HCD
depends on RC_CORE
+ select NEW_LEDS
+ select LEDS_CLASS
select USB
---help---
Say Y here if you want to use a RedRat3 Infrared Transceiver.
diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c
index ccd267f..094484f 100644
--- a/drivers/media/rc/redrat3.c
+++ b/drivers/media/rc/redrat3.c
@@ -47,6 +47,7 @@
#include <asm/unaligned.h>
#include <linux/device.h>
+#include <linux/leds.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/usb.h>
@@ -186,6 +187,13 @@ struct redrat3_dev {
struct rc_dev *rc;
struct device *dev;
+ /* led control */
+ struct led_classdev led;
+ atomic_t flash;
+ struct usb_ctrlrequest flash_control;
+ struct urb *flash_urb;
+ u8 flash_in_buf;
+
/* save off the usb device pointer */
struct usb_device *udev;
@@ -480,9 +488,9 @@ static inline void redrat3_delete(struct redrat3_dev *rr3,
{
rr3_ftr(rr3->dev, "%s cleaning up\n", __func__);
usb_kill_urb(rr3->read_urb);
-
+ usb_kill_urb(rr3->flash_urb);
usb_free_urb(rr3->read_urb);
-
+ usb_free_urb(rr3->flash_urb);
usb_free_coherent(udev, le16_to_cpu(rr3->ep_in->wMaxPacketSize),
rr3->bulk_in_buf, rr3->dma_in);
@@ -850,6 +858,44 @@ out:
return ret;
}
+static void redrat3_brightness_set(struct led_classdev *led_dev, enum
+ led_brightness brightness)
+{
+ struct redrat3_dev *rr3 = container_of(led_dev, struct redrat3_dev,
+ led);
+
+ if (brightness != LED_OFF && atomic_cmpxchg(&rr3->flash, 0, 1) == 0) {
+ int ret = usb_submit_urb(rr3->flash_urb, GFP_ATOMIC);
+ if (ret != 0) {
+ dev_dbg(rr3->dev, "%s: unexpected ret of %d\n",
+ __func__, ret);
+ atomic_set(&rr3->flash, 0);
+ }
+ }
+}
+
+static void redrat3_led_complete(struct urb *urb)
+{
+ struct redrat3_dev *rr3 = urb->context;
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ usb_unlink_urb(urb);
+ return;
+ case -EPIPE:
+ default:
+ dev_dbg(rr3->dev, "Error: urb status = %d\n", urb->status);
+ break;
+ }
+
+ rr3->led.brightness = LED_OFF;
+ atomic_dec(&rr3->flash);
+}
+
static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3)
{
struct device *dev = rr3->dev;
@@ -993,10 +1039,35 @@ static int redrat3_dev_probe(struct usb_interface *intf,
/* default.. will get overridden by any sends with a freq defined */
rr3->carrier = 38000;
+ /* led control */
+ rr3->led.name = "redrat3:red:feedback";
+ rr3->led.default_trigger = "rc-feedback";
+ rr3->led.brightness_set = redrat3_brightness_set;
+ retval = led_classdev_register(&intf->dev, &rr3->led);
+ if (retval)
+ goto error;
+
+ atomic_set(&rr3->flash, 0);
+ rr3->flash_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!rr3->flash_urb) {
+ retval = -ENOMEM;
+ goto led_free_error;
+ }
+
+ /* setup packet is 'c0 b9 0000 0000 0001' */
+ rr3->flash_control.bRequestType = 0xc0;
+ rr3->flash_control.bRequest = RR3_BLINK_LED;
+ rr3->flash_control.wLength = cpu_to_le16(1);
+
+ usb_fill_control_urb(rr3->flash_urb, udev, usb_rcvctrlpipe(udev, 0),
+ (unsigned char *)&rr3->flash_control,
+ &rr3->flash_in_buf, sizeof(rr3->flash_in_buf),
+ redrat3_led_complete, rr3);
+
rr3->rc = redrat3_init_rc_dev(rr3);
if (!rr3->rc) {
retval = -ENOMEM;
- goto error;
+ goto led_free_error;
}
setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3);
@@ -1006,6 +1077,8 @@ static int redrat3_dev_probe(struct usb_interface *intf,
rr3_ftr(dev, "Exiting %s\n", __func__);
return 0;
+led_free_error:
+ led_classdev_unregister(&rr3->led);
error:
redrat3_delete(rr3, rr3->udev);
@@ -1027,6 +1100,7 @@ static void redrat3_dev_disconnect(struct usb_interface *intf)
usb_set_intfdata(intf, NULL);
rc_unregister_device(rr3->rc);
+ led_classdev_unregister(&rr3->led);
del_timer_sync(&rr3->rx_timeout);
redrat3_delete(rr3, udev);
@@ -1037,7 +1111,9 @@ static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message)
{
struct redrat3_dev *rr3 = usb_get_intfdata(intf);
rr3_ftr(rr3->dev, "suspend\n");
+ led_classdev_suspend(&rr3->led);
usb_kill_urb(rr3->read_urb);
+ usb_kill_urb(rr3->flash_urb);
return 0;
}
@@ -1047,6 +1123,7 @@ static int redrat3_dev_resume(struct usb_interface *intf)
rr3_ftr(rr3->dev, "resume\n");
if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC))
return -EIO;
+ led_classdev_resume(&rr3->led);
return 0;
}
--
1.8.3.1
--
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