From patchwork Tue May 22 07:52:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 918067 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=microchip.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40qp581bgpz9s4q for ; Tue, 22 May 2018 18:01:48 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751239AbeEVIBR (ORCPT ); Tue, 22 May 2018 04:01:17 -0400 Received: from esa5.microchip.iphmx.com ([216.71.150.166]:23029 "EHLO esa5.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751349AbeEVHzj (ORCPT ); Tue, 22 May 2018 03:55:39 -0400 X-IronPort-AV: E=Sophos;i="5.49,429,1520924400"; d="scan'208";a="12323653" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa5.microchip.iphmx.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 22 May 2018 00:55:39 -0700 Received: from eh-station.mchp-main.com (10.10.76.4) by chn-sv-exch02.mchp-main.com (10.10.76.38) with Microsoft SMTP Server id 14.3.352.0; Tue, 22 May 2018 00:55:38 -0700 From: Eugen Hristev To: , , , , , , , , , , CC: Eugen Hristev Subject: [PATCH v7 3/9] dt-bindings: input: touchscreen: add minimum pressure touchscreen property Date: Tue, 22 May 2018 10:52:33 +0300 Message-ID: <1526975559-18966-4-git-send-email-eugen.hristev@microchip.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1526975559-18966-1-git-send-email-eugen.hristev@microchip.com> References: <1526975559-18966-1-git-send-email-eugen.hristev@microchip.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add a common touchscreen optional property that will specify the minimum pressure applied to the screen that is needed such that the driver will report the touch event. Signed-off-by: Eugen Hristev Reviewed-by: Rob Herring --- Changes in v5: - Modified property name to touchscreen-min-pressure from touchscreen-threshold-property Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt index 537643e..d092d5d 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt @@ -7,6 +7,9 @@ Optional properties for Touchscreens: (in pixels) - touchscreen-max-pressure : maximum reported pressure (arbitrary range dependent on the controller) + - touchscreen-min-pressure : minimum pressure on the touchscreen to be + achieved in order for the touchscreen + driver to report a touch event. - touchscreen-fuzz-x : horizontal noise value of the absolute input device (in pixels) - touchscreen-fuzz-y : vertical noise value of the absolute input From patchwork Tue May 22 07:52:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 918066 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=microchip.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40qp4F2BSWz9s55 for ; Tue, 22 May 2018 18:01:01 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751560AbeEVIAU (ORCPT ); Tue, 22 May 2018 04:00:20 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:28362 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751278AbeEVHzm (ORCPT ); Tue, 22 May 2018 03:55:42 -0400 X-IronPort-AV: E=Sophos;i="5.49,429,1520924400"; d="scan'208";a="14433787" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 22 May 2018 00:55:41 -0700 Received: from eh-station.mchp-main.com (10.10.76.4) by chn-sv-exch02.mchp-main.com (10.10.76.38) with Microsoft SMTP Server id 14.3.352.0; Tue, 22 May 2018 00:55:41 -0700 From: Eugen Hristev To: , , , , , , , , , , CC: Eugen Hristev Subject: [PATCH v7 4/9] dt-bindings: input: touchscreen: resistive-adc-touch: create bindings Date: Tue, 22 May 2018 10:52:34 +0300 Message-ID: <1526975559-18966-5-git-send-email-eugen.hristev@microchip.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1526975559-18966-1-git-send-email-eugen.hristev@microchip.com> References: <1526975559-18966-1-git-send-email-eugen.hristev@microchip.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Added bindings for generic resistive touchscreen ADC. Signed-off-by: Eugen Hristev Reviewed-by: Rob Herring --- Changes in v5: - changed property name touchscreen-threshold-pressure to touchscreen-min-pressure Changes in v3: - renamed file and compatible to exclude "generic" keyword - removed the pressure threshold property, added it as a common touchscreen property in the touchscreen common bindings in a separate commit. Changes in v2: - modified bindings to have a generic resistive touchscreen adc driver instead of specific architecture one. .../input/touchscreen/resistive-adc-touch.txt | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.txt diff --git a/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.txt b/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.txt new file mode 100644 index 0000000..51456c0 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.txt @@ -0,0 +1,30 @@ +Generic resistive touchscreen ADC + +Required properties: + + - compatible: must be "resistive-adc-touch" +The device must be connected to an ADC device that provides channels for +position measurement and optional pressure. +Refer to ../iio/iio-bindings.txt for details + - iio-channels: must have at least two channels connected to an ADC device. +These should correspond to the channels exposed by the ADC device and should +have the right index as the ADC device registers them. These channels +represent the relative position on the "x" and "y" axes. + - iio-channel-names: must have all the channels' names. Mandatory channels +are "x" and "y". + +Optional properties: + - iio-channels: The third channel named "pressure" is optional and can be +used if the ADC device also measures pressure besides position. +If this channel is missing, pressure will be ignored and the touchscreen +will only report position. + - iio-channel-names: optional channel named "pressure". + +Example: + + resistive_touch: resistive_touch { + compatible = "resistive-adc-touch"; + touchscreen-min-pressure = <50000>; + io-channels = <&adc 24>, <&adc 25>, <&adc 26>; + io-channel-names = "x", "y", "pressure"; + }; From patchwork Tue May 22 07:52:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 918065 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=microchip.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40qp2655XNz9s55 for ; Tue, 22 May 2018 17:59:10 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751453AbeEVH64 (ORCPT ); Tue, 22 May 2018 03:58:56 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:27737 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751451AbeEVHzw (ORCPT ); Tue, 22 May 2018 03:55:52 -0400 X-IronPort-AV: E=Sophos;i="5.49,429,1520924400"; d="scan'208";a="14433792" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 22 May 2018 00:55:51 -0700 Received: from eh-station.mchp-main.com (10.10.76.4) by chn-sv-exch02.mchp-main.com (10.10.76.38) with Microsoft SMTP Server id 14.3.352.0; Tue, 22 May 2018 00:55:51 -0700 From: Eugen Hristev To: , , , , , , , , , , CC: Eugen Hristev Subject: [PATCH v7 7/9] dt-bindings: iio: adc: at91-sama5d2_adc: add channel specific consumer info Date: Tue, 22 May 2018 10:52:37 +0300 Message-ID: <1526975559-18966-8-git-send-email-eugen.hristev@microchip.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1526975559-18966-1-git-send-email-eugen.hristev@microchip.com> References: <1526975559-18966-1-git-send-email-eugen.hristev@microchip.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Added defines for channel consumer device-tree binding Signed-off-by: Eugen Hristev Reviewed-by: Rob Herring Acked-by: Ludovic Desroches --- .../devicetree/bindings/iio/adc/at91-sama5d2_adc.txt | 9 +++++++++ include/dt-bindings/iio/adc/at91-sama5d2_adc.h | 16 ++++++++++++++++ 2 files changed, 25 insertions(+) create mode 100644 include/dt-bindings/iio/adc/at91-sama5d2_adc.h diff --git a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt index 6469a4c..4a3c1d4 100644 --- a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt +++ b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt @@ -21,6 +21,14 @@ Optional properties: - dmas: Phandle to dma channel for the ADC. - dma-names: Must be "rx" when dmas property is being used. See ../../dma/dma.txt for details. + - #io-channel-cells: in case consumer drivers are attached, this must be 1. + See for details. + +Properties for consumer drivers: + - Consumer drivers can be connected to this producer device, as specified + in + - Channels exposed are specified in: + Example: @@ -38,4 +46,5 @@ adc: adc@fc030000 { atmel,trigger-edge-type = ; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(25))>; dma-names = "rx"; + #io-channel-cells = <1>; } diff --git a/include/dt-bindings/iio/adc/at91-sama5d2_adc.h b/include/dt-bindings/iio/adc/at91-sama5d2_adc.h new file mode 100644 index 0000000..70f99db --- /dev/null +++ b/include/dt-bindings/iio/adc/at91-sama5d2_adc.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This header provides constants for configuring the AT91 SAMA5D2 ADC + */ + +#ifndef _DT_BINDINGS_IIO_ADC_AT91_SAMA5D2_ADC_H +#define _DT_BINDINGS_IIO_ADC_AT91_SAMA5D2_ADC_H + +/* X relative position channel index */ +#define AT91_SAMA5D2_ADC_X_CHANNEL 24 +/* Y relative position channel index */ +#define AT91_SAMA5D2_ADC_Y_CHANNEL 25 +/* pressure channel index */ +#define AT91_SAMA5D2_ADC_P_CHANNEL 26 + +#endif