[PATCH v5 3/6] [media] rc-core: add support for IR raw transmitters
From: Andi Shyti <hidden>
Date: 2016-12-16 06:13:09
Also in:
linux-leds, linux-media, lkml
Subsystem:
media input infrastructure (v4l/dvb), rc-core / lirc framework, the rest · Maintainers:
Mauro Carvalho Chehab, Sean Young, Linus Torvalds
IR raw transmitter driver type is specified in the enum rc_driver_type as RC_DRIVER_IR_RAW_TX which includes all those devices that transmit raw stream of bit to a receiver. The data are provided by userspace applications, therefore they don't need any input device allocation, but still they need to be registered as raw devices. Suggested-by: Sean Young <redacted> Signed-off-by: Andi Shyti <redacted> Reviewed-by: Sean Young <redacted> --- drivers/media/rc/rc-main.c | 42 +++++++++++++++++++++++++----------------- include/media/rc-core.h | 9 ++++++--- 2 files changed, 31 insertions(+), 20 deletions(-)
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 7cc700d..19cf15c 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c@@ -1365,20 +1365,24 @@ struct rc_dev *rc_allocate_device(enum rc_driver_type type) if (!dev) return NULL; - dev->input_dev = input_allocate_device(); - if (!dev->input_dev) { - kfree(dev); - return NULL; - } + if (type != RC_DRIVER_IR_RAW_TX) { + dev->input_dev = input_allocate_device(); + if (!dev->input_dev) { + kfree(dev); + return NULL; + } + + dev->input_dev->getkeycode = ir_getkeycode; + dev->input_dev->setkeycode = ir_setkeycode; + input_set_drvdata(dev->input_dev, dev); - dev->input_dev->getkeycode = ir_getkeycode; - dev->input_dev->setkeycode = ir_setkeycode; - input_set_drvdata(dev->input_dev, dev); + setup_timer(&dev->timer_keyup, ir_timer_keyup, + (unsigned long)dev); - spin_lock_init(&dev->rc_map.lock); - spin_lock_init(&dev->keylock); + spin_lock_init(&dev->rc_map.lock); + spin_lock_init(&dev->keylock); + } mutex_init(&dev->lock); - setup_timer(&dev->timer_keyup, ir_timer_keyup, (unsigned long)dev); dev->dev.type = &rc_dev_type; dev->dev.class = &rc_class;
@@ -1507,7 +1511,7 @@ static int rc_setup_rx_device(struct rc_dev *dev) static void rc_free_rx_device(struct rc_dev *dev) { - if (!dev) + if (!dev || dev->driver_type == RC_DRIVER_IR_RAW_TX) return; ir_free_table(&dev->rc_map);
@@ -1537,7 +1541,8 @@ int rc_register_device(struct rc_dev *dev) atomic_set(&dev->initialized, 0); dev->dev.groups = dev->sysfs_groups; - dev->sysfs_groups[attr++] = &rc_dev_protocol_attr_grp; + if (dev->driver_type != RC_DRIVER_IR_RAW_TX) + dev->sysfs_groups[attr++] = &rc_dev_protocol_attr_grp; if (dev->s_filter) dev->sysfs_groups[attr++] = &rc_dev_filter_attr_grp; if (dev->s_wakeup_filter)
@@ -1555,11 +1560,14 @@ int rc_register_device(struct rc_dev *dev) dev->input_name ?: "Unspecified device", path ?: "N/A"); kfree(path); - rc = rc_setup_rx_device(dev); - if (rc) - goto out_dev; + if (dev->driver_type != RC_DRIVER_IR_RAW_TX) { + rc = rc_setup_rx_device(dev); + if (rc) + goto out_dev; + } - if (dev->driver_type == RC_DRIVER_IR_RAW) { + if (dev->driver_type == RC_DRIVER_IR_RAW || + dev->driver_type == RC_DRIVER_IR_RAW_TX) { if (!raw_init) { request_module_nowait("ir-lirc-codec"); raw_init = true;
diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index ba92c86..98d28d5 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h@@ -32,13 +32,16 @@ do { \ /** * enum rc_driver_type - type of the RC output * - * @RC_DRIVER_SCANCODE: Driver or hardware generates a scancode - * @RC_DRIVER_IR_RAW: Driver or hardware generates pulse/space sequences. - * It needs a Infra-Red pulse/space decoder + * @RC_DRIVER_SCANCODE: Driver or hardware generates a scancode + * @RC_DRIVER_IR_RAW: Driver or hardware generates pulse/space sequences. + * It needs a Infra-Red pulse/space decoder + * @RC_DRIVER_IR_RAW_TX: Device transmitter only, + driver requires pulse/space data sequence. */ enum rc_driver_type { RC_DRIVER_SCANCODE = 0, RC_DRIVER_IR_RAW, + RC_DRIVER_IR_RAW_TX, }; /**
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2.10.2
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