* [PATCH] input: add ABS definitions for 16 pressure sensitve pads
@ 2010-08-07 15:38 Daniel Mack
2010-08-13 3:39 ` Dmitry Torokhov
0 siblings, 1 reply; 3+ messages in thread
From: Daniel Mack @ 2010-08-07 15:38 UTC (permalink / raw)
To: linux-input; +Cc: Daniel Mack, Dmitry Torokhov
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
include/linux/input.h | 19 ++++++++++++++++++-
include/linux/mod_devicetable.h | 2 +-
2 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/include/linux/input.h b/include/linux/input.h
index 896a922..b88d965 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -709,13 +709,30 @@ struct input_absinfo {
#define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */
#define ABS_MT_PRESSURE 0x3a /* Pressure on contact area */
+#define ABS_PAD0 0x40 /* pressure sensitive pads */
+#define ABS_PAD1 0x41
+#define ABS_PAD2 0x42
+#define ABS_PAD3 0x43
+#define ABS_PAD4 0x44
+#define ABS_PAD5 0x45
+#define ABS_PAD6 0x46
+#define ABS_PAD7 0x47
+#define ABS_PAD8 0x48
+#define ABS_PAD9 0x49
+#define ABS_PAD10 0x4a
+#define ABS_PAD11 0x4b
+#define ABS_PAD12 0x4c
+#define ABS_PAD13 0x4d
+#define ABS_PAD14 0x4e
+#define ABS_PAD15 0x4f
+
#ifdef __KERNEL__
/* Implementation details, userspace should not care about these */
#define ABS_MT_FIRST ABS_MT_TOUCH_MAJOR
#define ABS_MT_LAST ABS_MT_PRESSURE
#endif
-#define ABS_MAX 0x3f
+#define ABS_MAX 0x4f
#define ABS_CNT (ABS_MAX+1)
/*
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 48c007d..f9711de 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -287,7 +287,7 @@ struct pcmcia_device_id {
#define INPUT_DEVICE_ID_KEY_MIN_INTERESTING 0x71
#define INPUT_DEVICE_ID_KEY_MAX 0x2ff
#define INPUT_DEVICE_ID_REL_MAX 0x0f
-#define INPUT_DEVICE_ID_ABS_MAX 0x3f
+#define INPUT_DEVICE_ID_ABS_MAX 0x4f
#define INPUT_DEVICE_ID_MSC_MAX 0x07
#define INPUT_DEVICE_ID_LED_MAX 0x0f
#define INPUT_DEVICE_ID_SND_MAX 0x07
--
1.7.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] input: add ABS definitions for 16 pressure sensitve pads
2010-08-07 15:38 [PATCH] input: add ABS definitions for 16 pressure sensitve pads Daniel Mack
@ 2010-08-13 3:39 ` Dmitry Torokhov
2010-09-02 9:40 ` Daniel Mack
0 siblings, 1 reply; 3+ messages in thread
From: Dmitry Torokhov @ 2010-08-13 3:39 UTC (permalink / raw)
To: Daniel Mack; +Cc: linux-input
Hi Daniel,
On Sat, Aug 07, 2010 at 05:38:17PM +0200, Daniel Mack wrote:
> Signed-off-by: Daniel Mack <daniel@caiaq.de>
> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> ---
> include/linux/input.h | 19 ++++++++++++++++++-
> include/linux/mod_devicetable.h | 2 +-
> 2 files changed, 19 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/input.h b/include/linux/input.h
> index 896a922..b88d965 100644
> --- a/include/linux/input.h
> +++ b/include/linux/input.h
> @@ -709,13 +709,30 @@ struct input_absinfo {
> #define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */
> #define ABS_MT_PRESSURE 0x3a /* Pressure on contact area */
>
> +#define ABS_PAD0 0x40 /* pressure sensitive pads */
> +#define ABS_PAD1 0x41
> +#define ABS_PAD2 0x42
> +#define ABS_PAD3 0x43
> +#define ABS_PAD4 0x44
> +#define ABS_PAD5 0x45
> +#define ABS_PAD6 0x46
> +#define ABS_PAD7 0x47
> +#define ABS_PAD8 0x48
> +#define ABS_PAD9 0x49
> +#define ABS_PAD10 0x4a
> +#define ABS_PAD11 0x4b
> +#define ABS_PAD12 0x4c
> +#define ABS_PAD13 0x4d
> +#define ABS_PAD14 0x4e
> +#define ABS_PAD15 0x4f
> +
I do not think this is the direction I want to go. Even though the
default size of the input devices (thanks to your work) is half of what
it is used to be I do not think we should be assing such anonymous event
types. How about creating separate vent devices that would report
ABS_PRESSURE for these? Obviously you need userspace to understand such
compound device, the same as with new ABS_PAD* types.
I guess we need to increase numer of available event devices from 32 to
something larger (dynamic dev_t?) first...
Thanks.
--
Dmitry
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] input: add ABS definitions for 16 pressure sensitve pads
2010-08-13 3:39 ` Dmitry Torokhov
@ 2010-09-02 9:40 ` Daniel Mack
0 siblings, 0 replies; 3+ messages in thread
From: Daniel Mack @ 2010-09-02 9:40 UTC (permalink / raw)
To: Dmitry Torokhov; +Cc: linux-input
Hi Dmitry,
Sorry for the long delay.
On Thu, Aug 12, 2010 at 08:39:33PM -0700, Dmitry Torokhov wrote:
> On Sat, Aug 07, 2010 at 05:38:17PM +0200, Daniel Mack wrote:
> > Signed-off-by: Daniel Mack <daniel@caiaq.de>
> > Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> > ---
> > include/linux/input.h | 19 ++++++++++++++++++-
> > include/linux/mod_devicetable.h | 2 +-
> > 2 files changed, 19 insertions(+), 2 deletions(-)
> >
> > diff --git a/include/linux/input.h b/include/linux/input.h
> > index 896a922..b88d965 100644
> > --- a/include/linux/input.h
> > +++ b/include/linux/input.h
> > @@ -709,13 +709,30 @@ struct input_absinfo {
> > #define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */
> > #define ABS_MT_PRESSURE 0x3a /* Pressure on contact area */
> >
> > +#define ABS_PAD0 0x40 /* pressure sensitive pads */
> > +#define ABS_PAD1 0x41
> > +#define ABS_PAD2 0x42
> > +#define ABS_PAD3 0x43
> > +#define ABS_PAD4 0x44
> > +#define ABS_PAD5 0x45
> > +#define ABS_PAD6 0x46
> > +#define ABS_PAD7 0x47
> > +#define ABS_PAD8 0x48
> > +#define ABS_PAD9 0x49
> > +#define ABS_PAD10 0x4a
> > +#define ABS_PAD11 0x4b
> > +#define ABS_PAD12 0x4c
> > +#define ABS_PAD13 0x4d
> > +#define ABS_PAD14 0x4e
> > +#define ABS_PAD15 0x4f
> > +
>
> I do not think this is the direction I want to go. Even though the
> default size of the input devices (thanks to your work) is half of what
> it is used to be I do not think we should be assing such anonymous event
> types. How about creating separate vent devices that would report
> ABS_PRESSURE for these? Obviously you need userspace to understand such
> compound device, the same as with new ABS_PAD* types.
>
> I guess we need to increase numer of available event devices from 32 to
> something larger (dynamic dev_t?) first...
Hmm, I really don't know. As I mentioned before, the names for the
input controls my driver uses doesn't quite reflect the actual usage, or
the silk screen printed on the buttons of the devices, repectively.
So I tend to just use axes as anonymous indexes and assume the userspace
will map that to an appropriate function. And with this approach, I
actually do have enough address space available already.
I just considered adding these extra types for clearer definition of
what the do, but I agreee - it's actually quite some hazzle and the
impact to the userspace layer does not actually justify that.
Thanks,
Daniel
^ permalink raw reply [flat|nested] 3+ messages in thread
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2010-08-07 15:38 [PATCH] input: add ABS definitions for 16 pressure sensitve pads Daniel Mack
2010-08-13 3:39 ` Dmitry Torokhov
2010-09-02 9:40 ` Daniel Mack
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