[4/9] IR: add helper functions for ir input devices that send ir timing data in small chunks, and alternation between pulses and spaces isn't guaranteed.
Commit Message
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
---
drivers/media/IR/ir-core-priv.h | 1 +
drivers/media/IR/ir-keytable.c | 2 +-
drivers/media/IR/ir-raw-event.c | 86 +++++++++++++++++++++++++++++++++++++++
include/media/ir-core.h | 24 +++++++++-
4 files changed, 109 insertions(+), 4 deletions(-)
Comments
Em 28-07-2010 12:14, Maxim Levitsky escreveu:
Please provide a smaller subject. Feel free to add a more detailed description, but
subjects longer then 74 bytes end by causing some troubles when using git commands.
It would be nice to have a good description on this patch, as it provides a method
for working around troubles found on problematic devices.
> Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
> ---
> drivers/media/IR/ir-core-priv.h | 1 +
> drivers/media/IR/ir-keytable.c | 2 +-
> drivers/media/IR/ir-raw-event.c | 86 +++++++++++++++++++++++++++++++++++++++
> include/media/ir-core.h | 24 +++++++++-
> 4 files changed, 109 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/IR/ir-core-priv.h b/drivers/media/IR/ir-core-priv.h
> index 8ce80e4..3eafdb7 100644
> --- a/drivers/media/IR/ir-core-priv.h
> +++ b/drivers/media/IR/ir-core-priv.h
> @@ -36,6 +36,7 @@ struct ir_raw_event_ctrl {
> struct kfifo kfifo; /* fifo for the pulse/space durations */
> ktime_t last_event; /* when last event occurred */
> enum raw_event_type last_type; /* last event type */
> + struct ir_raw_event current_sample; /* sample that is not yet pushed to fifo */
> struct input_dev *input_dev; /* pointer to the parent input_dev */
> u64 enabled_protocols; /* enabled raw protocol decoders */
>
> diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
> index 94a8577..34b9c07 100644
> --- a/drivers/media/IR/ir-keytable.c
> +++ b/drivers/media/IR/ir-keytable.c
> @@ -428,7 +428,7 @@ static void ir_close(struct input_dev *input_dev)
> */
> int __ir_input_register(struct input_dev *input_dev,
> const struct ir_scancode_table *rc_tab,
> - const struct ir_dev_props *props,
> + struct ir_dev_props *props,
> const char *driver_name)
> {
> struct ir_input_dev *ir_dev;
Hmm... why are you removing "const" from ir_dev_props? This change seems unrelated
with the patch description.
> diff --git a/drivers/media/IR/ir-raw-event.c b/drivers/media/IR/ir-raw-event.c
> index c6a80b3..bdf2ed8 100644
> --- a/drivers/media/IR/ir-raw-event.c
> +++ b/drivers/media/IR/ir-raw-event.c
> @@ -129,6 +129,92 @@ int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type typ
> EXPORT_SYMBOL_GPL(ir_raw_event_store_edge);
>
> /**
> + * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing
> + * @input_dev: the struct input_dev device descriptor
> + * @type: the type of the event that has occurred
> + *
> + * This routine (which may be called from an interrupt context) is used to
> + * store the beginning of an ir pulse or space (or the start/end of ir
> + * reception) for the raw ir decoding state machines.\
> + * This routine is intended for devices with limited internal buffer
> + * It automerges samples of same type, and handles timeouts
> + */
> +int ir_raw_event_store_with_filter(struct input_dev *input_dev,
> + struct ir_raw_event *ev)
> +{
> + struct ir_input_dev *ir = input_get_drvdata(input_dev);
> + struct ir_raw_event_ctrl *raw = ir->raw;
> +
> + if (!ir->raw || !ir->props)
> + return -EINVAL;
> +
> + /* Ignore spaces in idle mode */
> + if (ir->idle && !ev->pulse)
> + return 0;
> + else if (ir->idle)
> + ir_raw_event_set_idle(input_dev, 0);
> +
> + if (!raw->current_sample.duration) {
> + raw->current_sample = *ev;
> + } else if (ev->pulse == raw->current_sample.pulse) {
> + raw->current_sample.duration += ev->duration;
> + } else {
> + ir_raw_event_store(input_dev, &raw->current_sample);
> + raw->current_sample = *ev;
> + }
> +
> + /* Enter idle mode if nessesary */
> + if (!ev->pulse && ir->props->timeout &&
> + raw->current_sample.duration >= ir->props->timeout)
> + ir_raw_event_set_idle(input_dev, 1);
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter);
> +
> +
> +void ir_raw_event_set_idle(struct input_dev *input_dev, int idle)
> +{
> + struct ir_input_dev *ir = input_get_drvdata(input_dev);
> + struct ir_raw_event_ctrl *raw = ir->raw;
> + ktime_t now;
> + u64 delta;
> +
> + if (!ir->props)
> + return;
> +
> + if (!ir->raw)
> + goto out;
> +
> + if (idle) {
> + IR_dprintk(2, "enter idle mode\n");
> + raw->last_event = ktime_get();
> + } else {
> + IR_dprintk(2, "exit idle mode\n");
> +
> + now = ktime_get();
> + delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
> +
> + WARN_ON(raw->current_sample.pulse);
> +
> + raw->current_sample.duration =
> + min(raw->current_sample.duration + delta,
> + (u64)IR_MAX_DURATION);
> +
> + ir_raw_event_store(input_dev, &raw->current_sample);
> +
> + if (raw->current_sample.duration == IR_MAX_DURATION)
> + ir_raw_event_reset(input_dev);
> +
> + raw->current_sample.duration = 0;
> + }
> +out:
> + if (ir->props->s_idle)
> + ir->props->s_idle(ir->props->priv, idle);
> + ir->idle = idle;
> +}
> +EXPORT_SYMBOL_GPL(ir_raw_event_set_idle);
> +
> +/**
> * ir_raw_event_handle() - schedules the decoding of stored ir data
> * @input_dev: the struct input_dev device descriptor
> *
> diff --git a/include/media/ir-core.h b/include/media/ir-core.h
> index 513e60d..53ce966 100644
> --- a/include/media/ir-core.h
> +++ b/include/media/ir-core.h
> @@ -41,6 +41,9 @@ enum rc_driver_type {
> * anything with it. Yet, as the same keycode table can be used with other
> * devices, a mask is provided to allow its usage. Drivers should generally
> * leave this field in blank
> + * @timeout: optional time after which device stops sending data
> + * @min_timeout: minimum timeout supported by device
> + * @max_timeout: maximum timeout supported by device
> * @priv: driver-specific data, to be used on the callbacks
> * @change_protocol: allow changing the protocol used on hardware decoders
> * @open: callback to allow drivers to enable polling/irq when IR input device
> @@ -50,11 +53,19 @@ enum rc_driver_type {
> * @s_tx_mask: set transmitter mask (for devices with multiple tx outputs)
> * @s_tx_carrier: set transmit carrier frequency
> * @tx_ir: transmit IR
> + * @s_idle: optional: enable/disable hardware idle mode, upon which,
> + device doesn't interrupt host untill it sees IR data
> */
> struct ir_dev_props {
> enum rc_driver_type driver_type;
> unsigned long allowed_protos;
> u32 scanmask;
> +
> + u64 timeout;
> + u64 min_timeout;
> + u64 max_timeout;
> +
> +
> void *priv;
> int (*change_protocol)(void *priv, u64 ir_type);
> int (*open)(void *priv);
> @@ -62,6 +73,7 @@ struct ir_dev_props {
> int (*s_tx_mask)(void *priv, u32 mask);
> int (*s_tx_carrier)(void *priv, u32 carrier);
> int (*tx_ir)(void *priv, int *txbuf, u32 n);
> + void (*s_idle) (void *priv, int enable);
> };
>
> struct ir_input_dev {
> @@ -69,9 +81,10 @@ struct ir_input_dev {
> char *driver_name; /* Name of the driver module */
> struct ir_scancode_table rc_tab; /* scan/key table */
> unsigned long devno; /* device number */
> - const struct ir_dev_props *props; /* Device properties */
> + struct ir_dev_props *props; /* Device properties */
> struct ir_raw_event_ctrl *raw; /* for raw pulse/space events */
> struct input_dev *input_dev; /* the input device associated with this device */
> + int idle;
>
> /* key info - needed by IR keycode handlers */
> spinlock_t keylock; /* protects the below members */
> @@ -95,12 +108,12 @@ enum raw_event_type {
> /* From ir-keytable.c */
> int __ir_input_register(struct input_dev *dev,
> const struct ir_scancode_table *ir_codes,
> - const struct ir_dev_props *props,
> + struct ir_dev_props *props,
> const char *driver_name);
>
> static inline int ir_input_register(struct input_dev *dev,
> const char *map_name,
> - const struct ir_dev_props *props,
> + struct ir_dev_props *props,
> const char *driver_name) {
> struct ir_scancode_table *ir_codes;
> struct ir_input_dev *ir_dev;
> @@ -144,6 +157,11 @@ struct ir_raw_event {
> void ir_raw_event_handle(struct input_dev *input_dev);
> int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev);
> int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type);
> +int ir_raw_event_store_with_filter(struct input_dev *input_dev,
> + struct ir_raw_event *ev);
> +
> +void ir_raw_event_set_idle(struct input_dev *input_dev, int idle);
> +
> static inline void ir_raw_event_reset(struct input_dev *input_dev)
> {
> struct ir_raw_event ev = { .pulse = false, .duration = 0 };
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On Wed, 2010-07-28 at 13:09 -0300, Mauro Carvalho Chehab wrote:
> Em 28-07-2010 12:14, Maxim Levitsky escreveu:
>
> Please provide a smaller subject. Feel free to add a more detailed description, but
> subjects longer then 74 bytes end by causing some troubles when using git commands.
I didn't intend that, I just keep forgetting to add a newline between
subject and description..
>
> It would be nice to have a good description on this patch, as it provides a method
> for working around troubles found on problematic devices.
>
> > Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
> > ---
> > drivers/media/IR/ir-core-priv.h | 1 +
> > drivers/media/IR/ir-keytable.c | 2 +-
> > drivers/media/IR/ir-raw-event.c | 86 +++++++++++++++++++++++++++++++++++++++
> > include/media/ir-core.h | 24 +++++++++-
> > 4 files changed, 109 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/media/IR/ir-core-priv.h b/drivers/media/IR/ir-core-priv.h
> > index 8ce80e4..3eafdb7 100644
> > --- a/drivers/media/IR/ir-core-priv.h
> > +++ b/drivers/media/IR/ir-core-priv.h
> > @@ -36,6 +36,7 @@ struct ir_raw_event_ctrl {
> > struct kfifo kfifo; /* fifo for the pulse/space durations */
> > ktime_t last_event; /* when last event occurred */
> > enum raw_event_type last_type; /* last event type */
> > + struct ir_raw_event current_sample; /* sample that is not yet pushed to fifo */
> > struct input_dev *input_dev; /* pointer to the parent input_dev */
> > u64 enabled_protocols; /* enabled raw protocol decoders */
> >
> > diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
> > index 94a8577..34b9c07 100644
> > --- a/drivers/media/IR/ir-keytable.c
> > +++ b/drivers/media/IR/ir-keytable.c
> > @@ -428,7 +428,7 @@ static void ir_close(struct input_dev *input_dev)
> > */
> > int __ir_input_register(struct input_dev *input_dev,
> > const struct ir_scancode_table *rc_tab,
> > - const struct ir_dev_props *props,
> > + struct ir_dev_props *props,
> > const char *driver_name)
> > {
> > struct ir_input_dev *ir_dev;
>
> Hmm... why are you removing "const" from ir_dev_props? This change seems unrelated
> with the patch description.
Because I add new field 'timeout' I intend to change it in runtime by
the driver.
Best regards,
Maxim Levitsky
>
> > diff --git a/drivers/media/IR/ir-raw-event.c b/drivers/media/IR/ir-raw-event.c
> > index c6a80b3..bdf2ed8 100644
> > --- a/drivers/media/IR/ir-raw-event.c
> > +++ b/drivers/media/IR/ir-raw-event.c
> > @@ -129,6 +129,92 @@ int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type typ
> > EXPORT_SYMBOL_GPL(ir_raw_event_store_edge);
> >
> > /**
> > + * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing
> > + * @input_dev: the struct input_dev device descriptor
> > + * @type: the type of the event that has occurred
> > + *
> > + * This routine (which may be called from an interrupt context) is used to
> > + * store the beginning of an ir pulse or space (or the start/end of ir
> > + * reception) for the raw ir decoding state machines.\
> > + * This routine is intended for devices with limited internal buffer
> > + * It automerges samples of same type, and handles timeouts
> > + */
> > +int ir_raw_event_store_with_filter(struct input_dev *input_dev,
> > + struct ir_raw_event *ev)
> > +{
> > + struct ir_input_dev *ir = input_get_drvdata(input_dev);
> > + struct ir_raw_event_ctrl *raw = ir->raw;
> > +
> > + if (!ir->raw || !ir->props)
> > + return -EINVAL;
> > +
> > + /* Ignore spaces in idle mode */
> > + if (ir->idle && !ev->pulse)
> > + return 0;
> > + else if (ir->idle)
> > + ir_raw_event_set_idle(input_dev, 0);
> > +
> > + if (!raw->current_sample.duration) {
> > + raw->current_sample = *ev;
> > + } else if (ev->pulse == raw->current_sample.pulse) {
> > + raw->current_sample.duration += ev->duration;
> > + } else {
> > + ir_raw_event_store(input_dev, &raw->current_sample);
> > + raw->current_sample = *ev;
> > + }
> > +
> > + /* Enter idle mode if nessesary */
> > + if (!ev->pulse && ir->props->timeout &&
> > + raw->current_sample.duration >= ir->props->timeout)
> > + ir_raw_event_set_idle(input_dev, 1);
> > + return 0;
> > +}
> > +EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter);
> > +
> > +
> > +void ir_raw_event_set_idle(struct input_dev *input_dev, int idle)
> > +{
> > + struct ir_input_dev *ir = input_get_drvdata(input_dev);
> > + struct ir_raw_event_ctrl *raw = ir->raw;
> > + ktime_t now;
> > + u64 delta;
> > +
> > + if (!ir->props)
> > + return;
> > +
> > + if (!ir->raw)
> > + goto out;
> > +
> > + if (idle) {
> > + IR_dprintk(2, "enter idle mode\n");
> > + raw->last_event = ktime_get();
> > + } else {
> > + IR_dprintk(2, "exit idle mode\n");
> > +
> > + now = ktime_get();
> > + delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
> > +
> > + WARN_ON(raw->current_sample.pulse);
> > +
> > + raw->current_sample.duration =
> > + min(raw->current_sample.duration + delta,
> > + (u64)IR_MAX_DURATION);
> > +
> > + ir_raw_event_store(input_dev, &raw->current_sample);
> > +
> > + if (raw->current_sample.duration == IR_MAX_DURATION)
> > + ir_raw_event_reset(input_dev);
> > +
> > + raw->current_sample.duration = 0;
> > + }
> > +out:
> > + if (ir->props->s_idle)
> > + ir->props->s_idle(ir->props->priv, idle);
> > + ir->idle = idle;
> > +}
> > +EXPORT_SYMBOL_GPL(ir_raw_event_set_idle);
> > +
> > +/**
> > * ir_raw_event_handle() - schedules the decoding of stored ir data
> > * @input_dev: the struct input_dev device descriptor
> > *
> > diff --git a/include/media/ir-core.h b/include/media/ir-core.h
> > index 513e60d..53ce966 100644
> > --- a/include/media/ir-core.h
> > +++ b/include/media/ir-core.h
> > @@ -41,6 +41,9 @@ enum rc_driver_type {
> > * anything with it. Yet, as the same keycode table can be used with other
> > * devices, a mask is provided to allow its usage. Drivers should generally
> > * leave this field in blank
> > + * @timeout: optional time after which device stops sending data
> > + * @min_timeout: minimum timeout supported by device
> > + * @max_timeout: maximum timeout supported by device
> > * @priv: driver-specific data, to be used on the callbacks
> > * @change_protocol: allow changing the protocol used on hardware decoders
> > * @open: callback to allow drivers to enable polling/irq when IR input device
> > @@ -50,11 +53,19 @@ enum rc_driver_type {
> > * @s_tx_mask: set transmitter mask (for devices with multiple tx outputs)
> > * @s_tx_carrier: set transmit carrier frequency
> > * @tx_ir: transmit IR
> > + * @s_idle: optional: enable/disable hardware idle mode, upon which,
> > + device doesn't interrupt host untill it sees IR data
> > */
> > struct ir_dev_props {
> > enum rc_driver_type driver_type;
> > unsigned long allowed_protos;
> > u32 scanmask;
> > +
> > + u64 timeout;
> > + u64 min_timeout;
> > + u64 max_timeout;
> > +
> > +
> > void *priv;
> > int (*change_protocol)(void *priv, u64 ir_type);
> > int (*open)(void *priv);
> > @@ -62,6 +73,7 @@ struct ir_dev_props {
> > int (*s_tx_mask)(void *priv, u32 mask);
> > int (*s_tx_carrier)(void *priv, u32 carrier);
> > int (*tx_ir)(void *priv, int *txbuf, u32 n);
> > + void (*s_idle) (void *priv, int enable);
> > };
> >
> > struct ir_input_dev {
> > @@ -69,9 +81,10 @@ struct ir_input_dev {
> > char *driver_name; /* Name of the driver module */
> > struct ir_scancode_table rc_tab; /* scan/key table */
> > unsigned long devno; /* device number */
> > - const struct ir_dev_props *props; /* Device properties */
> > + struct ir_dev_props *props; /* Device properties */
> > struct ir_raw_event_ctrl *raw; /* for raw pulse/space events */
> > struct input_dev *input_dev; /* the input device associated with this device */
> > + int idle;
> >
> > /* key info - needed by IR keycode handlers */
> > spinlock_t keylock; /* protects the below members */
> > @@ -95,12 +108,12 @@ enum raw_event_type {
> > /* From ir-keytable.c */
> > int __ir_input_register(struct input_dev *dev,
> > const struct ir_scancode_table *ir_codes,
> > - const struct ir_dev_props *props,
> > + struct ir_dev_props *props,
> > const char *driver_name);
> >
> > static inline int ir_input_register(struct input_dev *dev,
> > const char *map_name,
> > - const struct ir_dev_props *props,
> > + struct ir_dev_props *props,
> > const char *driver_name) {
> > struct ir_scancode_table *ir_codes;
> > struct ir_input_dev *ir_dev;
> > @@ -144,6 +157,11 @@ struct ir_raw_event {
> > void ir_raw_event_handle(struct input_dev *input_dev);
> > int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev);
> > int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type);
> > +int ir_raw_event_store_with_filter(struct input_dev *input_dev,
> > + struct ir_raw_event *ev);
> > +
> > +void ir_raw_event_set_idle(struct input_dev *input_dev, int idle);
> > +
> > static inline void ir_raw_event_reset(struct input_dev *input_dev)
> > {
> > struct ir_raw_event ev = { .pulse = false, .duration = 0 };
>
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On Wed, Jul 28, 2010 at 06:14:06PM +0300, Maxim Levitsky wrote:
> Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
With the caveat of requiring an improved changelog, per Mauro's suggestion:
Acked-by: Jarod Wilson <jarod@redhat.com>
I suspect at least some of this code may be of use to the streamzap driver
as well (which I started looking at porting last night, despite my
insistence that I was going to work on lirc_zilog first...).
On Wed, Jul 28, 2010 at 01:46:27PM -0400, Jarod Wilson wrote:
> On Wed, Jul 28, 2010 at 06:14:06PM +0300, Maxim Levitsky wrote:
> > Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
>
> With the caveat of requiring an improved changelog, per Mauro's suggestion:
>
> Acked-by: Jarod Wilson <jarod@redhat.com>
>
> I suspect at least some of this code may be of use to the streamzap driver
> as well (which I started looking at porting last night, despite my
> insistence that I was going to work on lirc_zilog first...).
One other note: idle looks like it can happily exist as a bool instead of
as an int, no?
On Wed, 2010-07-28 at 16:57 -0400, Jarod Wilson wrote:
> On Wed, Jul 28, 2010 at 01:46:27PM -0400, Jarod Wilson wrote:
> > On Wed, Jul 28, 2010 at 06:14:06PM +0300, Maxim Levitsky wrote:
> > > Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
> >
> > With the caveat of requiring an improved changelog, per Mauro's suggestion:
> >
> > Acked-by: Jarod Wilson <jarod@redhat.com>
> >
> > I suspect at least some of this code may be of use to the streamzap driver
> > as well (which I started looking at porting last night, despite my
> > insistence that I was going to work on lirc_zilog first...).
>
> One other note: idle looks like it can happily exist as a bool instead of
> as an int, no?
>
sure.
I have a problem with this code however, I just discovered.
I pretty much don't know how to solve it currently...
I just posted a mail about it.
Best regards,
Maxim Levitsky
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@@ -36,6 +36,7 @@ struct ir_raw_event_ctrl {
struct kfifo kfifo; /* fifo for the pulse/space durations */
ktime_t last_event; /* when last event occurred */
enum raw_event_type last_type; /* last event type */
+ struct ir_raw_event current_sample; /* sample that is not yet pushed to fifo */
struct input_dev *input_dev; /* pointer to the parent input_dev */
u64 enabled_protocols; /* enabled raw protocol decoders */
@@ -428,7 +428,7 @@ static void ir_close(struct input_dev *input_dev)
*/
int __ir_input_register(struct input_dev *input_dev,
const struct ir_scancode_table *rc_tab,
- const struct ir_dev_props *props,
+ struct ir_dev_props *props,
const char *driver_name)
{
struct ir_input_dev *ir_dev;
@@ -129,6 +129,92 @@ int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type typ
EXPORT_SYMBOL_GPL(ir_raw_event_store_edge);
/**
+ * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing
+ * @input_dev: the struct input_dev device descriptor
+ * @type: the type of the event that has occurred
+ *
+ * This routine (which may be called from an interrupt context) is used to
+ * store the beginning of an ir pulse or space (or the start/end of ir
+ * reception) for the raw ir decoding state machines.\
+ * This routine is intended for devices with limited internal buffer
+ * It automerges samples of same type, and handles timeouts
+ */
+int ir_raw_event_store_with_filter(struct input_dev *input_dev,
+ struct ir_raw_event *ev)
+{
+ struct ir_input_dev *ir = input_get_drvdata(input_dev);
+ struct ir_raw_event_ctrl *raw = ir->raw;
+
+ if (!ir->raw || !ir->props)
+ return -EINVAL;
+
+ /* Ignore spaces in idle mode */
+ if (ir->idle && !ev->pulse)
+ return 0;
+ else if (ir->idle)
+ ir_raw_event_set_idle(input_dev, 0);
+
+ if (!raw->current_sample.duration) {
+ raw->current_sample = *ev;
+ } else if (ev->pulse == raw->current_sample.pulse) {
+ raw->current_sample.duration += ev->duration;
+ } else {
+ ir_raw_event_store(input_dev, &raw->current_sample);
+ raw->current_sample = *ev;
+ }
+
+ /* Enter idle mode if nessesary */
+ if (!ev->pulse && ir->props->timeout &&
+ raw->current_sample.duration >= ir->props->timeout)
+ ir_raw_event_set_idle(input_dev, 1);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter);
+
+
+void ir_raw_event_set_idle(struct input_dev *input_dev, int idle)
+{
+ struct ir_input_dev *ir = input_get_drvdata(input_dev);
+ struct ir_raw_event_ctrl *raw = ir->raw;
+ ktime_t now;
+ u64 delta;
+
+ if (!ir->props)
+ return;
+
+ if (!ir->raw)
+ goto out;
+
+ if (idle) {
+ IR_dprintk(2, "enter idle mode\n");
+ raw->last_event = ktime_get();
+ } else {
+ IR_dprintk(2, "exit idle mode\n");
+
+ now = ktime_get();
+ delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
+
+ WARN_ON(raw->current_sample.pulse);
+
+ raw->current_sample.duration =
+ min(raw->current_sample.duration + delta,
+ (u64)IR_MAX_DURATION);
+
+ ir_raw_event_store(input_dev, &raw->current_sample);
+
+ if (raw->current_sample.duration == IR_MAX_DURATION)
+ ir_raw_event_reset(input_dev);
+
+ raw->current_sample.duration = 0;
+ }
+out:
+ if (ir->props->s_idle)
+ ir->props->s_idle(ir->props->priv, idle);
+ ir->idle = idle;
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_set_idle);
+
+/**
* ir_raw_event_handle() - schedules the decoding of stored ir data
* @input_dev: the struct input_dev device descriptor
*
@@ -41,6 +41,9 @@ enum rc_driver_type {
* anything with it. Yet, as the same keycode table can be used with other
* devices, a mask is provided to allow its usage. Drivers should generally
* leave this field in blank
+ * @timeout: optional time after which device stops sending data
+ * @min_timeout: minimum timeout supported by device
+ * @max_timeout: maximum timeout supported by device
* @priv: driver-specific data, to be used on the callbacks
* @change_protocol: allow changing the protocol used on hardware decoders
* @open: callback to allow drivers to enable polling/irq when IR input device
@@ -50,11 +53,19 @@ enum rc_driver_type {
* @s_tx_mask: set transmitter mask (for devices with multiple tx outputs)
* @s_tx_carrier: set transmit carrier frequency
* @tx_ir: transmit IR
+ * @s_idle: optional: enable/disable hardware idle mode, upon which,
+ device doesn't interrupt host untill it sees IR data
*/
struct ir_dev_props {
enum rc_driver_type driver_type;
unsigned long allowed_protos;
u32 scanmask;
+
+ u64 timeout;
+ u64 min_timeout;
+ u64 max_timeout;
+
+
void *priv;
int (*change_protocol)(void *priv, u64 ir_type);
int (*open)(void *priv);
@@ -62,6 +73,7 @@ struct ir_dev_props {
int (*s_tx_mask)(void *priv, u32 mask);
int (*s_tx_carrier)(void *priv, u32 carrier);
int (*tx_ir)(void *priv, int *txbuf, u32 n);
+ void (*s_idle) (void *priv, int enable);
};
struct ir_input_dev {
@@ -69,9 +81,10 @@ struct ir_input_dev {
char *driver_name; /* Name of the driver module */
struct ir_scancode_table rc_tab; /* scan/key table */
unsigned long devno; /* device number */
- const struct ir_dev_props *props; /* Device properties */
+ struct ir_dev_props *props; /* Device properties */
struct ir_raw_event_ctrl *raw; /* for raw pulse/space events */
struct input_dev *input_dev; /* the input device associated with this device */
+ int idle;
/* key info - needed by IR keycode handlers */
spinlock_t keylock; /* protects the below members */
@@ -95,12 +108,12 @@ enum raw_event_type {
/* From ir-keytable.c */
int __ir_input_register(struct input_dev *dev,
const struct ir_scancode_table *ir_codes,
- const struct ir_dev_props *props,
+ struct ir_dev_props *props,
const char *driver_name);
static inline int ir_input_register(struct input_dev *dev,
const char *map_name,
- const struct ir_dev_props *props,
+ struct ir_dev_props *props,
const char *driver_name) {
struct ir_scancode_table *ir_codes;
struct ir_input_dev *ir_dev;
@@ -144,6 +157,11 @@ struct ir_raw_event {
void ir_raw_event_handle(struct input_dev *input_dev);
int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev);
int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type);
+int ir_raw_event_store_with_filter(struct input_dev *input_dev,
+ struct ir_raw_event *ev);
+
+void ir_raw_event_set_idle(struct input_dev *input_dev, int idle);
+
static inline void ir_raw_event_reset(struct input_dev *input_dev)
{
struct ir_raw_event ev = { .pulse = false, .duration = 0 };