From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8A4FAC433EF for ; Thu, 3 Feb 2022 00:25:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348530AbiBCAZo (ORCPT ); Wed, 2 Feb 2022 19:25:44 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:44379 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239246AbiBCAZn (ORCPT ); Wed, 2 Feb 2022 19:25:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1643847943; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=9ZQYqdbCEdIW0rdKYmSkTNvVSn6qBN3RtXQqCV8wMvU=; b=dps7btC5soRI7xF9mQGEQq3w6NzcAOjzuOxQckBLB3iZ4BHO29a2l9raLoseP6iMgnItbe e5DN5QRRUu3Vk7qH+gOvApYRqVPw4DfLg0qRm62IAFhEa17XYpbYRU3f3rl9O6Njn/E2vj heszXzRd+52rpZ2g5xUGhp6myfH5HXU= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-519-Vqa5I9KnO1G2j8vtwQWFGg-1; Wed, 02 Feb 2022 19:25:40 -0500 X-MC-Unique: Vqa5I9KnO1G2j8vtwQWFGg-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C85C81054F97; Thu, 3 Feb 2022 00:25:38 +0000 (UTC) Received: from cmirabil.remote.csb (unknown [10.22.8.140]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7C4454EC7F; Thu, 3 Feb 2022 00:25:27 +0000 (UTC) From: Charles Mirabile To: linux-kernel@vger.kernel.org Cc: Charles Mirabile , Serge Schneider , Stefan Wahren , Nicolas Saenz Julienne , Mattias Brugger , linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, fedora-rpi@googlegroups.com Subject: [PATCH 0/6] Raspberry Pi Sense HAT driver Date: Wed, 2 Feb 2022 19:25:15 -0500 Message-Id: <20220203002521.162878-1-cmirabil@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series adds a set of drivers for operating the Sense HAT peripheral device. This board is an add on for the Raspberry Pi that is designed to connect using the GPIO connector and communicate via I2C. It features: - a joystick - an 8x8 RGB LED matrix display - a whole bunch of environmental sensors with their own drivers (those are already in upstream Linux) This is a refactor of the work of Serge Schneider, the author of a version of this driver that is currently in the Raspberry Pi downstream kernel. We modified his code to make it suitable for upstream Linux. A couple of tests are available for the driver in the test folder in this repo: https://github.com/underground-software/sensehat.git - sensehat_joystick_test logs the input events from the joystick to the console - sensehat_display_test displays various solid colors on the LED panel. - full_sensehat_test displays a single lit cell that can be moved with the joystick. Pressing the joystick ends the program. For more information about the Sense HAT, visit: https://www.raspberrypi.org/products/sense-hat/ Improvements since v5: - The sensehat core driver has been removed and its functionality is now performed by simply adding the sensehat compatible string to the simple_mfd_i2c driver. - the subdrivers now read information about their SMB registers and irqs from their own device tree meaning that these values are now configurable and no longer hard coded into the driver. - As a result of removing the core driver and making each subdriver handle its own internal data itself, the drivers have finally become completely independent and so now it is finally truly possible to use more than one sensehat or more than one of its sub components in theory. (though in practice this would require modifying the firmware on the board). Fixes since v5: - the joystick has been changed to use BTN_DPAD and BTN_SELECT instead of the arrow keys and enter, and lots of small issues with the joystick code have been fixed (thanks to Dmitry Torokhov for these suggestions) - all forward declarations have been removed from the driver (thanks to Miguel Ojeda and Stefan Wahren for this suggestion) - the userspace interface of the display driver has been changed to remove the need to process and copy the data as much before it can be sent to the device. (thanks to Matthias Brugger for this suggestion) - fixed issue with interrupt parent property in device tree binding (thanks to Rob Herring for this suggestion) charliemirabile (6): drivers/mfd: sensehat: Add Raspberry Pi Sense HAT to simple_mfd_i2c drivers/input/joystick: sensehat: Raspberry Pi Sense HAT joystick driver drivers/auxdisplay: sensehat: Raspberry Pi Sense HAT display driver dt-bindings: mfd: sensehat: Add Raspberry Pi Sense HAT schema MAINTAINERS: Add sensehat driver authors to MAINTAINERS DO NOT MERGE: full sensehat device tree overlay for raspberry pi 4 .../raspberrypi,sensehat-display.yaml | 32 +++ .../input/raspberrypi,sensehat-joystick.yaml | 37 +++ .../bindings/mfd/raspberrypi,sensehat.yaml | 68 +++++ MAINTAINERS | 12 + drivers/auxdisplay/Kconfig | 8 + drivers/auxdisplay/Makefile | 1 + drivers/auxdisplay/sensehat-display.c | 264 ++++++++++++++++++ drivers/input/joystick/Kconfig | 11 + drivers/input/joystick/Makefile | 1 + drivers/input/joystick/sensehat-joystick.c | 128 +++++++++ drivers/mfd/simple-mfd-i2c.c | 1 + include/uapi/linux/sensehat.h | 28 ++ sensehat.dtbs | 56 ++++ 13 files changed, 647 insertions(+) create mode 100644 Documentation/devicetree/bindings/auxdisplay/raspberrypi,sensehat-display.yaml create mode 100644 Documentation/devicetree/bindings/input/raspberrypi,sensehat-joystick.yaml create mode 100644 Documentation/devicetree/bindings/mfd/raspberrypi,sensehat.yaml create mode 100644 drivers/auxdisplay/sensehat-display.c create mode 100644 drivers/input/joystick/sensehat-joystick.c create mode 100644 include/uapi/linux/sensehat.h create mode 100644 sensehat.dtbs -- 2.31.1