From: Eugen Hristev <eugen.hristev@microchip.com>
To: <nicolas.ferre@microchip.com>, <ludovic.desroches@microchip.com>,
<alexandre.belloni@free-electrons.com>,
<linux-iio@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<jic23@kernel.org>, <linux-input@vger.kernel.org>,
<dmitry.torokhov@gmail.com>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Subject: [PATCH 02/14] iio: Add channel for Position
Date: Fri, 22 Dec 2017 17:07:09 +0200 [thread overview]
Message-ID: <1513955241-10985-3-git-send-email-eugen.hristev@microchip.com> (raw)
In-Reply-To: <1513955241-10985-1-git-send-email-eugen.hristev@microchip.com>
Add new channel type for position on a pad.
These type of analog sensor represents the position of a pen
on a touchpad, and is represented as a voltage, which can be
converted to a position on X and Y axis on the pad.
The channel can then be consumed by a touchscreen driver or
read as-is for a raw indication of the touchpen on a touchpad.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
---
Documentation/ABI/testing/sysfs-bus-iio | 11 +++++++++++
drivers/iio/industrialio-core.c | 1 +
include/uapi/linux/iio/types.h | 1 +
tools/iio/iio_event_monitor.c | 2 ++
4 files changed, 15 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index a478740..d2b9e2f 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -190,6 +190,17 @@ Description:
but should match other such assignments on device).
Units after application of scale and offset are m/s^2.
+What: /sys/bus/iio/devices/iio:deviceX/in_position_x_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_position_y_raw
+KernelVersion: 4.16
+Contact: linux-iio@vger.kernel.org
+Description:
+ Position in direction x or y on a pad (may be arbitrarily
+ assigned but should match other such assignments on device).
+ Units after application of scale and offset are millipercents
+ from the pad's size in both directions. Should be calibrated by
+ the consumer.
+
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 2e8e36f..a4fa49b 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -85,6 +85,7 @@ static const char * const iio_chan_type_name_spec[] = {
[IIO_COUNT] = "count",
[IIO_INDEX] = "index",
[IIO_GRAVITY] = "gravity",
+ [IIO_POSITION] = "position",
};
static const char * const iio_modifier_names[] = {
diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index 4213cdf..35e17da 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -44,6 +44,7 @@ enum iio_chan_type {
IIO_COUNT,
IIO_INDEX,
IIO_GRAVITY,
+ IIO_POSITION,
};
enum iio_modifier {
diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c
index b61245e..0c2b317 100644
--- a/tools/iio/iio_event_monitor.c
+++ b/tools/iio/iio_event_monitor.c
@@ -58,6 +58,7 @@ static const char * const iio_chan_type_name_spec[] = {
[IIO_PH] = "ph",
[IIO_UVINDEX] = "uvindex",
[IIO_GRAVITY] = "gravity",
+ [IIO_POSITION] = "position",
};
static const char * const iio_ev_type_text[] = {
@@ -151,6 +152,7 @@ static bool event_is_known(struct iio_event_data *event)
case IIO_PH:
case IIO_UVINDEX:
case IIO_GRAVITY:
+ case IIO_POSITION:
break;
default:
return false;
--
2.7.4
next prev parent reply other threads:[~2017-12-22 15:10 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-22 15:07 [PATCH 00/14] iio: triggers: add consumer support Eugen Hristev
2017-12-22 15:07 ` [PATCH 01/14] MAINTAINERS: add sama5d2 resistive touchscreen Eugen Hristev
2017-12-22 15:07 ` Eugen Hristev [this message]
2017-12-29 16:09 ` [PATCH 02/14] iio: Add channel for Position Jonathan Cameron
2017-12-22 15:07 ` [PATCH 03/14] dt-bindings: iio: add binding support for iio trigger provider/consumer Eugen Hristev
2017-12-26 22:35 ` Rob Herring
2017-12-29 17:24 ` Jonathan Cameron
2017-12-22 15:07 ` [PATCH 04/14] dt-bindings: input: touchscreen: sama5d2_rts: create bindings Eugen Hristev
2017-12-22 15:07 ` [PATCH 05/14] iio: triggers: add helper function to retrieve trigger Eugen Hristev
2017-12-22 15:07 ` [PATCH 06/14] iio: triggers: expose attach and detach helpers for pollfuncs Eugen Hristev
2017-12-22 15:07 ` [PATCH 07/14] iio: triggers: on pollfunc attach, complete iio_dev if NULL Eugen Hristev
2017-12-29 17:23 ` Jonathan Cameron
2017-12-22 15:07 ` [PATCH 08/14] iio: triggers: add private data to pollfuncs Eugen Hristev
2017-12-22 15:07 ` [PATCH 09/14] iio: inkern: triggers: create helpers for OF trigger retrieval Eugen Hristev
2017-12-29 17:20 ` Jonathan Cameron
2017-12-22 15:07 ` [PATCH 10/14] iio: adc: at91-sama5d2_adc: force trigger removal on module remove Eugen Hristev
2017-12-29 16:22 ` Jonathan Cameron
2017-12-22 15:07 ` [PATCH 11/14] iio: adc: at91-sama5d2_adc: optimize scan index for diff channels Eugen Hristev
2017-12-29 16:24 ` Jonathan Cameron
2017-12-22 15:07 ` [PATCH 12/14] iio: adc: at91-sama5d2_adc: support for position and pressure channels Eugen Hristev
2017-12-29 17:02 ` Jonathan Cameron
2018-01-04 15:17 ` Eugen Hristev
2018-01-06 15:05 ` Jonathan Cameron
2018-01-08 14:12 ` Ludovic Desroches
2018-01-14 10:47 ` Jonathan Cameron
2017-12-22 15:07 ` [PATCH 13/14] input: touchscreen: sama5d2_rts: SAMA5D2 Resistive touchscreen driver Eugen Hristev
2017-12-22 16:29 ` Philippe Ombredanne
2017-12-26 22:41 ` Rob Herring
2017-12-29 17:16 ` Jonathan Cameron
2017-12-22 15:07 ` [PATCH 14/14] ARM: dts: at91: sama5d2: Add resistive touch device Eugen Hristev
2017-12-22 16:10 ` Alexandre Belloni
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