From nobody Mon May 11 00:50:37 2026 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 D1A94C433EF for ; Tue, 19 Apr 2022 20:52:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357771AbiDSUzd (ORCPT ); Tue, 19 Apr 2022 16:55:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43108 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357743AbiDSUzX (ORCPT ); Tue, 19 Apr 2022 16:55:23 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 074F83EF2A for ; Tue, 19 Apr 2022 13:52:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650401559; 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: in-reply-to:in-reply-to:references:references; bh=QA0FeCUr4bLfjKoIaw8u1rHYCmWADNz6x1PRseUplPs=; b=WiLltv2ydVYXo2BNSr1uHw71ukT3sR8sMuGP0TG78VcGlOiu4B4JAIKT7jr03CWS1zYsT3 uypMRkTEPFLX3o94zHc47k+d4J/xTdzIzqyYjG3uEj93wkS6OEB+3M1v6dh0+XI/ttSjv6 Ofvf0m8DBwarp7+QDzEinynh8WFbVgk= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-130-c1RscARvPV2tjrqtdjbVEw-1; Tue, 19 Apr 2022 16:52:35 -0400 X-MC-Unique: c1RscARvPV2tjrqtdjbVEw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7BB0A2A2AD74; Tue, 19 Apr 2022 20:52:20 +0000 (UTC) Received: from cmirabil.remote.csb (unknown [10.22.8.24]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0671A2167D65; Tue, 19 Apr 2022 20:52:19 +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, Lee Jones , Mwesigwa Guma , Joel Savitz Subject: [PATCH v9 1/6] drivers/mfd: sensehat: Add Raspberry Pi Sense HAT to simple_mfd_i2c Date: Tue, 19 Apr 2022 16:51:53 -0400 Message-Id: <20220419205158.28088-2-cmirabil@redhat.com> In-Reply-To: <20220419205158.28088-1-cmirabil@redhat.com> References: <20220419205158.28088-1-cmirabil@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This patch adds the compatible string for the Sense HAT device to the list of compatible strings in the simple_mfd_i2c driver so that it can match against the device and load its children and their drivers Co-developed-by: Mwesigwa Guma Signed-off-by: Mwesigwa Guma Co-developed-by: Joel Savitz Signed-off-by: Joel Savitz Signed-off-by: Charles Mirabile --- drivers/mfd/simple-mfd-i2c.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mfd/simple-mfd-i2c.c b/drivers/mfd/simple-mfd-i2c.c index f4c8fc3ee463..c47f36581f3f 100644 --- a/drivers/mfd/simple-mfd-i2c.c +++ b/drivers/mfd/simple-mfd-i2c.c @@ -75,6 +75,7 @@ static const struct simple_mfd_data silergy_sy7636a =3D { static const struct of_device_id simple_mfd_i2c_of_match[] =3D { { .compatible =3D "kontron,sl28cpld" }, { .compatible =3D "silergy,sy7636a", .data =3D &silergy_sy7636a}, + { .compatible =3D "raspberrypi,sensehat" }, {} }; MODULE_DEVICE_TABLE(of, simple_mfd_i2c_of_match); --=20 2.31.1 From nobody Mon May 11 00:50:37 2026 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 E5D08C433F5 for ; Tue, 19 Apr 2022 20:52:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357773AbiDSUzf (ORCPT ); Tue, 19 Apr 2022 16:55:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357757AbiDSUz0 (ORCPT ); Tue, 19 Apr 2022 16:55:26 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 85FD43F8B1 for ; Tue, 19 Apr 2022 13:52:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650401561; 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: in-reply-to:in-reply-to:references:references; bh=/JqL0X3/KT3zDD+acZ4FetaC4TRfVdG3OQ6t4Ea+PBQ=; b=ByCrj1Q19c9jpL+k+IvwkW0YDxS/8u88Jl1+vzSW7IKe6TSN9tK3itrZljIKQ2JVxIh+2p O1U1B/zE53OaolIAkl2nmLfNqch8DfTNhaMlJg7tRYdSkGEqVYbxKcu7A6W/WkV5W0FOQ9 Ba7C5M/01PPbQfb1/xiFfHiW5Nmaaxc= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-250-7yJKaTtoMwS5kYjWBVO8oA-1; Tue, 19 Apr 2022 16:52:38 -0400 X-MC-Unique: 7yJKaTtoMwS5kYjWBVO8oA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 62219901865; Tue, 19 Apr 2022 20:52:23 +0000 (UTC) Received: from cmirabil.remote.csb (unknown [10.22.8.24]) by smtp.corp.redhat.com (Postfix) with ESMTP id D10D72166B4F; Tue, 19 Apr 2022 20:52:22 +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, Dmitry Torokhov , linux-input@vger.kernel.org, Daniel Bauman , Mwesigwa Guma , Joel Savitz Subject: [PATCH v9 2/6] drivers/input/joystick: sensehat: Raspberry Pi Sense HAT joystick driver Date: Tue, 19 Apr 2022 16:51:54 -0400 Message-Id: <20220419205158.28088-3-cmirabil@redhat.com> In-Reply-To: <20220419205158.28088-1-cmirabil@redhat.com> References: <20220419205158.28088-1-cmirabil@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This patch adds the driver for the Sense HAT joystick. It outputs BTN_DPAD key events when moved in any of the four directions and the BTN_SELECT event when depressed. Co-developed-by: Daniel Bauman Signed-off-by: Daniel Bauman Co-developed-by: Mwesigwa Guma Signed-off-by: Mwesigwa Guma Co-developed-by: Joel Savitz Signed-off-by: Joel Savitz Signed-off-by: Charles Mirabile --- drivers/input/joystick/Kconfig | 11 ++ drivers/input/joystick/Makefile | 1 + drivers/input/joystick/sensehat-joystick.c | 137 +++++++++++++++++++++ 3 files changed, 149 insertions(+) create mode 100644 drivers/input/joystick/sensehat-joystick.c diff --git a/drivers/input/joystick/Kconfig b/drivers/input/joystick/Kconfig index 3b23078bc7b5..505a032e2786 100644 --- a/drivers/input/joystick/Kconfig +++ b/drivers/input/joystick/Kconfig @@ -399,4 +399,15 @@ config JOYSTICK_N64 Say Y here if you want enable support for the four built-in controller ports on the Nintendo 64 console. =20 +config JOYSTICK_SENSEHAT + tristate "Raspberry Pi Sense HAT joystick" + depends on INPUT && I2C + select MFD_SIMPLE_MFD_I2C + help + Say Y here if you want to enable the driver for the + the Raspberry Pi Sense HAT. + + To compile this driver as a module, choose M here: the + module will be called sensehat_joystick. + endif diff --git a/drivers/input/joystick/Makefile b/drivers/input/joystick/Makef= ile index 5174b8aba2dd..39c8b5c6e5ae 100644 --- a/drivers/input/joystick/Makefile +++ b/drivers/input/joystick/Makefile @@ -28,6 +28,7 @@ obj-$(CONFIG_JOYSTICK_N64) +=3D n64joy.o obj-$(CONFIG_JOYSTICK_PSXPAD_SPI) +=3D psxpad-spi.o obj-$(CONFIG_JOYSTICK_PXRC) +=3D pxrc.o obj-$(CONFIG_JOYSTICK_QWIIC) +=3D qwiic-joystick.o +obj-$(CONFIG_JOYSTICK_SENSEHAT) +=3D sensehat-joystick.o obj-$(CONFIG_JOYSTICK_SIDEWINDER) +=3D sidewinder.o obj-$(CONFIG_JOYSTICK_SPACEBALL) +=3D spaceball.o obj-$(CONFIG_JOYSTICK_SPACEORB) +=3D spaceorb.o diff --git a/drivers/input/joystick/sensehat-joystick.c b/drivers/input/joy= stick/sensehat-joystick.c new file mode 100644 index 000000000000..6fed6004f464 --- /dev/null +++ b/drivers/input/joystick/sensehat-joystick.c @@ -0,0 +1,137 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Raspberry Pi Sense HAT joystick driver + * http://raspberrypi.org + * + * Copyright (C) 2015 Raspberry Pi + * Copyright (C) 2021 Charles Mirabile, Mwesigwa Guma, Joel Savitz + * + * Original Author: Serge Schneider + * Revised for upstream Linux by: Charles Mirabile, Mwesigwa Guma, Joel Sa= vitz + */ + +#include +#include +#include +#include +#include +#include +#include + +#define JOYSTICK_SMB_REG 0xf2 + +struct sensehat_joystick { + struct platform_device *pdev; + struct input_dev *keys_dev; + unsigned long prev_states; + struct regmap *regmap; +}; + +static const unsigned int keymap[] =3D { + BTN_DPAD_DOWN, BTN_DPAD_RIGHT, BTN_DPAD_UP, BTN_SELECT, BTN_DPAD_LEFT, +}; + +static irqreturn_t sensehat_joystick_report(int n, void *cookie) +{ + int i, error, keys; + struct sensehat_joystick *sensehat_joystick =3D cookie; + unsigned long curr_states, changes; + + error =3D regmap_read(sensehat_joystick->regmap, JOYSTICK_SMB_REG, &keys); + if (error < 0) { + dev_err(&sensehat_joystick->pdev->dev, + "Failed to read joystick state: %d", error); + return IRQ_NONE; + } + curr_states =3D keys; + bitmap_xor(&changes, &curr_states, &sensehat_joystick->prev_states, + ARRAY_SIZE(keymap)); + + for_each_set_bit(i, &changes, ARRAY_SIZE(keymap)) { + input_report_key(sensehat_joystick->keys_dev, keymap[i], + curr_states & BIT(i)); + } + + input_sync(sensehat_joystick->keys_dev); + sensehat_joystick->prev_states =3D keys; + return IRQ_HANDLED; +} + +static int sensehat_joystick_probe(struct platform_device *pdev) +{ + int error, i, irq; + struct sensehat_joystick *sensehat_joystick =3D devm_kzalloc( + &pdev->dev, sizeof(*sensehat_joystick), GFP_KERNEL); + if (!sensehat_joystick) + return -ENOMEM; + + sensehat_joystick->pdev =3D pdev; + + sensehat_joystick->regmap =3D dev_get_regmap(sensehat_joystick->pdev->dev= .parent, NULL); + if (!sensehat_joystick->regmap) { + dev_err(&pdev->dev, + "unable to get sensehat regmap"); + return -ENODEV; + } + + + sensehat_joystick->keys_dev =3D devm_input_allocate_device(&pdev->dev); + if (!sensehat_joystick->keys_dev) { + dev_err(&pdev->dev, "Could not allocate input device."); + return -ENOMEM; + } + + for (i =3D 0; i < ARRAY_SIZE(keymap); i++) + set_bit(keymap[i], sensehat_joystick->keys_dev->keybit); + + sensehat_joystick->keys_dev->name =3D "Raspberry Pi Sense HAT Joystick"; + sensehat_joystick->keys_dev->phys =3D "sensehat-joystick/input0"; + sensehat_joystick->keys_dev->id.bustype =3D BUS_I2C; + sensehat_joystick->keys_dev->evbit[0] =3D + BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); + + error =3D input_register_device(sensehat_joystick->keys_dev); + if (error) { + dev_err(&pdev->dev, "Could not register input device."); + return error; + } + + irq =3D platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "Could not retrieve interrupt request."); + return irq; + } + + error =3D devm_request_threaded_irq(&pdev->dev, irq, NULL, + sensehat_joystick_report, + IRQF_ONESHOT, "keys", + sensehat_joystick); + + if (error) { + dev_err(&pdev->dev, "IRQ request failed."); + return error; + } + + return 0; +} + +static const struct of_device_id sensehat_joystick_device_id[] =3D { + { .compatible =3D "raspberrypi,sensehat-joystick" }, + {}, +}; +MODULE_DEVICE_TABLE(of, sensehat_joystick_device_id); + +static struct platform_driver sensehat_joystick_driver =3D { + .probe =3D sensehat_joystick_probe, + .driver =3D { + .name =3D "sensehat-joystick", + .of_match_table =3D sensehat_joystick_device_id, + }, +}; + +module_platform_driver(sensehat_joystick_driver); + +MODULE_DESCRIPTION("Raspberry Pi Sense HAT joystick driver"); +MODULE_AUTHOR("Charles Mirabile "); +MODULE_AUTHOR("Serge Schneider "); +MODULE_LICENSE("GPL"); --=20 2.31.1 From nobody Mon May 11 00:50:37 2026 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 BB443C433EF for ; Tue, 19 Apr 2022 20:53:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357786AbiDSUzn (ORCPT ); Tue, 19 Apr 2022 16:55:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43168 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357760AbiDSUz1 (ORCPT ); Tue, 19 Apr 2022 16:55:27 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 16F3B3F8B5 for ; Tue, 19 Apr 2022 13:52:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650401562; 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: in-reply-to:in-reply-to:references:references; bh=lACn+sayb3RZanl5LMS+97tFXYXxnPqJYnAtULr0Juc=; b=TSJl+bK13hL/fxOQPs+E2iSrVK+CnIUvVhHfQDwACobDjtuCi0lvKvH3oLrmXci0m6CSRF D0np1rDJqE2TT7yxrbB+Mv/LzVddpPJUMBZZm1cos6c+xIt5SXY9ydlK7PKrFdp9dB1ohU tvPinPaAFA18e8R60IMyO5Nt8gDlr3s= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-417-vH8Dj6FfNF20HaiDl3evbQ-1; Tue, 19 Apr 2022 16:52:39 -0400 X-MC-Unique: vH8Dj6FfNF20HaiDl3evbQ-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id ACEAE811E83; Tue, 19 Apr 2022 20:52:25 +0000 (UTC) Received: from cmirabil.remote.csb (unknown [10.22.8.24]) by smtp.corp.redhat.com (Postfix) with ESMTP id 305242166B4F; Tue, 19 Apr 2022 20:52:25 +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, Miguel Ojeda , Daniel Bauman , Mwesigwa Guma , Joel Savitz Subject: [PATCH v9 3/6] drivers/auxdisplay: sensehat: Raspberry Pi Sense HAT display driver Date: Tue, 19 Apr 2022 16:51:55 -0400 Message-Id: <20220419205158.28088-4-cmirabil@redhat.com> In-Reply-To: <20220419205158.28088-1-cmirabil@redhat.com> References: <20220419205158.28088-1-cmirabil@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This patch adds the driver for the 8x8 RGB LED matrix display on the Sense HAT. It appears as a character device named sense-hat in /dev/. That special file is 192 bytes large and contains 64 RGB triplets (3 bytes each) one for each pixel in row major order. Co-developed-by: Daniel Bauman Signed-off-by: Daniel Bauman Co-developed-by: Mwesigwa Guma Signed-off-by: Mwesigwa Guma Co-developed-by: Joel Savitz Signed-off-by: Joel Savitz Signed-off-by: Charles Mirabile --- drivers/auxdisplay/Kconfig | 8 + drivers/auxdisplay/Makefile | 1 + drivers/auxdisplay/sensehat-display.c | 205 ++++++++++++++++++++++++++ 3 files changed, 214 insertions(+) create mode 100644 drivers/auxdisplay/sensehat-display.c diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig index 64012cda4d12..9bad1aade7a0 100644 --- a/drivers/auxdisplay/Kconfig +++ b/drivers/auxdisplay/Kconfig @@ -203,6 +203,14 @@ config ARM_CHARLCD line and the Linux version on the second line, but that's still useful. =20 +config SENSEHAT_DISPLAY + tristate "Raspberry Pi Sense HAT display driver" + depends on I2C + select MFD_SIMPLE_MFD_I2C + help + This is a driver for the Raspberry Pi Sensehat 8x8 RBG-LED matrix + you can access it as a misc device at /dev/sense-hat + menuconfig PARPORT_PANEL tristate "Parallel port LCD/Keypad Panel support" depends on PARPORT diff --git a/drivers/auxdisplay/Makefile b/drivers/auxdisplay/Makefile index 6968ed4d3f0a..30b2b7934046 100644 --- a/drivers/auxdisplay/Makefile +++ b/drivers/auxdisplay/Makefile @@ -14,3 +14,4 @@ obj-$(CONFIG_HT16K33) +=3D ht16k33.o obj-$(CONFIG_PARPORT_PANEL) +=3D panel.o obj-$(CONFIG_LCD2S) +=3D lcd2s.o obj-$(CONFIG_LINEDISP) +=3D line-display.o +obj-$(CONFIG_SENSEHAT_DISPLAY) +=3D sensehat-display.o diff --git a/drivers/auxdisplay/sensehat-display.c b/drivers/auxdisplay/sen= sehat-display.c new file mode 100644 index 000000000000..9faaee5cde8a --- /dev/null +++ b/drivers/auxdisplay/sensehat-display.c @@ -0,0 +1,205 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Raspberry Pi Sense HAT 8x8 LED matrix display driver + * http://raspberrypi.org + * + * Copyright (C) 2015 Raspberry Pi + * Copyright (C) 2021 Charles Mirabile, Mwesigwa Guma, Joel Savitz + * + * Original Author: Serge Schneider + * Revised for upstream Linux by: Charles Mirabile, Mwesigwa Guma, Joel Sa= vitz + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DISPLAY_SMB_REG 0x00 +#define RGB_555_MASK 0x1f +#define NUM_LEDS 8 +#define NUM_CHANNELS 3 + +struct sensehat_display { + struct platform_device *pdev; + struct miscdevice mdev; + struct mutex rw_mtx; + u8 vmem[NUM_LEDS][NUM_LEDS][NUM_CHANNELS]; + struct regmap *regmap; +}; + +#define VMEM_SIZE sizeof_field(struct sensehat_display, vmem) + + +static int sensehat_update_display(struct sensehat_display *display) +{ + int i, j, k, ret; + u8 buff[NUM_LEDS][NUM_CHANNELS][NUM_LEDS]; + + for (i =3D 0; i < NUM_LEDS; ++i) + for (j =3D 0; j < NUM_LEDS; ++j) + for (k =3D 0; k < NUM_CHANNELS; ++k) + buff[i][k][j] =3D + display->vmem[i][j][k] & RGB_555_MASK; + + ret =3D regmap_bulk_write(display->regmap, DISPLAY_SMB_REG, buff, + VMEM_SIZE); + if (ret < 0) + dev_err(&display->pdev->dev, + "Update to 8x8 LED matrix display failed"); + return ret; +} + +static loff_t sensehat_display_llseek(struct file *filp, loff_t offset, + int whence) +{ + return fixed_size_llseek(filp, offset, whence, VMEM_SIZE); +} + +static ssize_t sensehat_display_read(struct file *filp, char __user *buf, + size_t count, loff_t *f_pos) +{ + struct sensehat_display *sensehat_display =3D + container_of(filp->private_data, struct sensehat_display, mdev); + ssize_t ret =3D -EFAULT; + + if (*f_pos < 0 || *f_pos >=3D VMEM_SIZE) + return 0; + count =3D min_t(size_t, count, VMEM_SIZE - *f_pos); + + if (mutex_lock_interruptible(&sensehat_display->rw_mtx)) + return -ERESTARTSYS; + if (copy_to_user(buf, *f_pos + (u8 *)sensehat_display->vmem, count)) + goto out; + *f_pos +=3D count; + ret =3D count; +out: + mutex_unlock(&sensehat_display->rw_mtx); + return ret; +} + +static ssize_t sensehat_display_write(struct file *filp, const char __user= *buf, + size_t count, loff_t *f_pos) +{ + struct sensehat_display *sensehat_display =3D + container_of(filp->private_data, struct sensehat_display, mdev); + int ret =3D -EFAULT; + + if (*f_pos < 0 || *f_pos >=3D VMEM_SIZE) + return -EFBIG; + count =3D min_t(size_t, count, VMEM_SIZE - *f_pos); + + if (mutex_lock_interruptible(&sensehat_display->rw_mtx)) + return -ERESTARTSYS; + if (copy_from_user(*f_pos + (u8 *)sensehat_display->vmem, buf, count)) + goto out; + ret =3D sensehat_update_display(sensehat_display); + if (ret < 0) { + ret =3D -EIO; + goto out; + } + *f_pos +=3D count; + ret =3D count; +out: + mutex_unlock(&sensehat_display->rw_mtx); + return ret; +} + +static const struct file_operations sensehat_display_fops =3D { + .owner =3D THIS_MODULE, + .llseek =3D sensehat_display_llseek, + .read =3D sensehat_display_read, + .write =3D sensehat_display_write, +}; + +static int sensehat_display_probe(struct platform_device *pdev) +{ + int ret; + + struct sensehat_display *sensehat_display =3D + devm_kmalloc(&pdev->dev, sizeof(*sensehat_display), GFP_KERNEL); + if (!sensehat_display) + return -ENOMEM; + + sensehat_display->pdev =3D pdev; + + dev_set_drvdata(&pdev->dev, sensehat_display); + + sensehat_display->regmap =3D dev_get_regmap(pdev->dev.parent, NULL); + if (!sensehat_display->regmap) { + dev_err(&pdev->dev, + "unable to get sensehat regmap"); + return -ENODEV; + } + + memset(sensehat_display->vmem, 0, VMEM_SIZE); + + mutex_init(&sensehat_display->rw_mtx); + + ret =3D sensehat_update_display(sensehat_display); + if (ret < 0) { + dev_err(&pdev->dev, + "Could not communicate with sensehat"); + return ret; + } + + sensehat_display->mdev =3D (struct miscdevice){ + .minor =3D MISC_DYNAMIC_MINOR, + .name =3D "sense-hat", + .mode =3D 0666, + .fops =3D &sensehat_display_fops, + }; + + ret =3D misc_register(&sensehat_display->mdev); + if (ret < 0) { + dev_err(&pdev->dev, + "Could not register 8x8 LED matrix display."); + return ret; + } + + dev_info(&pdev->dev, + "8x8 LED matrix display registered with minor number %i", + sensehat_display->mdev.minor); + + return 0; +} + +static int sensehat_display_remove(struct platform_device *pdev) +{ + struct sensehat_display *sensehat_display =3D dev_get_drvdata(&pdev->dev); + + misc_deregister(&sensehat_display->mdev); + return 0; +} + +static const struct of_device_id sensehat_display_device_id[] =3D { + { .compatible =3D "raspberrypi,sensehat-display" }, + {}, +}; +MODULE_DEVICE_TABLE(of, sensehat_display_device_id); + +static struct platform_driver sensehat_display_driver =3D { + .probe =3D sensehat_display_probe, + .remove =3D sensehat_display_remove, + .driver =3D { + .name =3D "sensehat-display", + .of_match_table =3D sensehat_display_device_id, + }, +}; + +module_platform_driver(sensehat_display_driver); + +MODULE_DESCRIPTION("Raspberry Pi Sense HAT 8x8 LED matrix display driver"); +MODULE_AUTHOR("Charles Mirabile "); +MODULE_AUTHOR("Serge Schneider "); +MODULE_LICENSE("GPL"); --=20 2.31.1 From nobody Mon May 11 00:50:37 2026 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 C51ACC4332F for ; Tue, 19 Apr 2022 20:52:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357763AbiDSUz2 (ORCPT ); Tue, 19 Apr 2022 16:55:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355188AbiDSUzX (ORCPT ); Tue, 19 Apr 2022 16:55:23 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B0AFD3F8B0 for ; Tue, 19 Apr 2022 13:52:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650401558; 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: in-reply-to:in-reply-to:references:references; bh=uTjYvD2H2yAhu4F9ELwLlkHbskBphdGN/dCfYNdPzmY=; b=JsAk0oGMq5ro4mWZ0p/8TBqFG/ibOBAumaQaRkYddRZbxomusknQoU5NF1OHKQsao8uOCB cDN08/lsJGgysSKABI2AhYWXsrf6aI48tsTqrFgVBvbYM2tE7Vj7wtNBGmmU4S1/56+E/W I/d759PGvfLB13saU8onPnO+mNlwIUU= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-454-mH1b93fDN2Oc2Nk-0m7bzw-1; Tue, 19 Apr 2022 16:52:37 -0400 X-MC-Unique: mH1b93fDN2Oc2Nk-0m7bzw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 246E91C00BA0; Tue, 19 Apr 2022 20:52:28 +0000 (UTC) Received: from cmirabil.remote.csb (unknown [10.22.8.24]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7697A2166B4F; Tue, 19 Apr 2022 20:52:27 +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, Miguel Ojeda , Rob Herring , Krzysztof Kozlowski , Dmitry Torokhov , Lee Jones , devicetree@vger.kernel.org, linux-input@vger.kernel.org, Mwesigwa Guma , Joel Savitz Subject: [PATCH v9 4/6] dt-bindings: mfd: sensehat: Add Raspberry Pi Sense HAT schema Date: Tue, 19 Apr 2022 16:51:56 -0400 Message-Id: <20220419205158.28088-5-cmirabil@redhat.com> In-Reply-To: <20220419205158.28088-1-cmirabil@redhat.com> References: <20220419205158.28088-1-cmirabil@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This patch adds the device tree bindings for the Sense HAT and each of its children devices in yaml form. Co-developed-by: Mwesigwa Guma Signed-off-by: Mwesigwa Guma Co-developed-by: Joel Savitz Signed-off-by: Joel Savitz Signed-off-by: Charles Mirabile Reviewed-by: Krzysztof Kozlowski --- .../raspberrypi,sensehat-display.yaml | 27 +++++++++ .../input/raspberrypi,sensehat-joystick.yaml | 32 ++++++++++ .../bindings/mfd/raspberrypi,sensehat.yaml | 58 +++++++++++++++++++ 3 files changed, 117 insertions(+) create mode 100644 Documentation/devicetree/bindings/auxdisplay/raspberryp= i,sensehat-display.yaml create mode 100644 Documentation/devicetree/bindings/input/raspberrypi,sen= sehat-joystick.yaml create mode 100644 Documentation/devicetree/bindings/mfd/raspberrypi,sense= hat.yaml diff --git a/Documentation/devicetree/bindings/auxdisplay/raspberrypi,sense= hat-display.yaml b/Documentation/devicetree/bindings/auxdisplay/raspberrypi= ,sensehat-display.yaml new file mode 100644 index 000000000000..5e41d6b7817d --- /dev/null +++ b/Documentation/devicetree/bindings/auxdisplay/raspberrypi,sensehat-dis= play.yaml @@ -0,0 +1,27 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/auxdisplay/raspberrypi,sensehat-display= .yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Raspberry Pi Sensehat Display + +maintainers: + - Charles Mirabile + - Mwesigwa Guma + - Joel Savitz + +description: + This device is part of the sensehat multi function device. + For more information see ../mfd/raspberrypi,sensehat.yaml. + + This device features a programmable 8x8 RGB LED matrix. + +properties: + compatible: + const: raspberrypi,sensehat-display + +required: + - compatible + +additionalProperties: false diff --git a/Documentation/devicetree/bindings/input/raspberrypi,sensehat-j= oystick.yaml b/Documentation/devicetree/bindings/input/raspberrypi,sensehat= -joystick.yaml new file mode 100644 index 000000000000..2c8bc10e6436 --- /dev/null +++ b/Documentation/devicetree/bindings/input/raspberrypi,sensehat-joystick= .yaml @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/raspberrypi,sensehat-joystick.yam= l# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Raspberry Pi Sensehat Joystick + +maintainers: + - Charles Mirabile + - Mwesigwa Guma + - Joel Savitz + +description: + This device is part of the sensehat multi function device. + For more information see ../mfd/raspberrypi,sensehat.yaml. + + This device features a five button joystick (up, down,left, + right, click) + +properties: + compatible: + const: raspberrypi,sensehat-joystick + + interrupts: + maxItems: 1 + +required: + - compatible + - interrupts + +additionalProperties: false diff --git a/Documentation/devicetree/bindings/mfd/raspberrypi,sensehat.yam= l b/Documentation/devicetree/bindings/mfd/raspberrypi,sensehat.yaml new file mode 100644 index 000000000000..6ac43dfc0270 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/raspberrypi,sensehat.yaml @@ -0,0 +1,58 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/raspberrypi,sensehat.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Raspberry Pi Sensehat + +maintainers: + - Charles Mirabile + - Mwesigwa Guma + - Joel Savitz + +description: + The Raspberry Pi Sensehat is an addon board originally developed + for the Raspberry Pi that has a joystick and an 8x8 RGB LED display + as well as several environmental sensors. It connects via i2c and + a gpio for irq. + +properties: + compatible: + const: raspberrypi,sensehat + + reg: + maxItems: 1 + + joystick: + $ref: /schemas/input/raspberrypi,sensehat-joystick.yaml# + + display: + $ref: /schemas/auxdisplay/raspberrypi,sensehat-display.yaml# + +required: + - compatible + - reg + - joystick + - display + +additionalProperties: false + +examples: + - | + #include + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + hat@46 { + compatible =3D "raspberrypi,sensehat"; + reg =3D <0x46>; + display { + compatible =3D "raspberrypi,sensehat-display"; + }; + joystick { + compatible =3D "raspberrypi,sensehat-joystick"; + interrupts =3D <23 IRQ_TYPE_EDGE_RISING>; + }; + }; + }; --=20 2.31.1 From nobody Mon May 11 00:50:37 2026 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 BE43FC433F5 for ; Tue, 19 Apr 2022 20:53:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357794AbiDSUzq (ORCPT ); Tue, 19 Apr 2022 16:55:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43370 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357775AbiDSUzl (ORCPT ); Tue, 19 Apr 2022 16:55:41 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2C03E41605 for ; Tue, 19 Apr 2022 13:52:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650401577; 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: in-reply-to:in-reply-to:references:references; bh=sTPP9q4Dpfu9p0KID4dIJ0Vy0gJV20AUzdB83Ep9O/Q=; b=DOrYMbB7tTcduPPD+rOvrOTIRlm+ILij2cDcD3bzZXEoEGlk1XLKSbBZe240CT0mMVxC24 vizIcG5IQ2+Uh4se/YvJ8T/ryyrxBCZ0+7KXt4bu1z6b6/3peKARH6nRqW31/nxlTJw5Cn uqzCa9NskyAyG9yOe1Py4ownFJ++9F8= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-544-KjrSqcfAOma0LRif7Dwsbw-1; Tue, 19 Apr 2022 16:52:39 -0400 X-MC-Unique: KjrSqcfAOma0LRif7Dwsbw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id C4C9F2A5954A; Tue, 19 Apr 2022 20:52:29 +0000 (UTC) Received: from cmirabil.remote.csb (unknown [10.22.8.24]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5B2C92166B4F; Tue, 19 Apr 2022 20:52:29 +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, Mwesigwa Guma , Joel Savitz Subject: [PATCH v9 5/6] MAINTAINERS: Add sensehat driver authors to MAINTAINERS Date: Tue, 19 Apr 2022 16:51:57 -0400 Message-Id: <20220419205158.28088-6-cmirabil@redhat.com> In-Reply-To: <20220419205158.28088-1-cmirabil@redhat.com> References: <20220419205158.28088-1-cmirabil@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This patch adds the driver authors to MAINAINERS. Co-developed-by: Mwesigwa Guma Signed-off-by: Mwesigwa Guma Co-developed-by: Joel Savitz Signed-off-by: Joel Savitz Signed-off-by: Charles Mirabile --- MAINTAINERS | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 40fa1955ca3f..b93f060322a3 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17747,6 +17747,17 @@ F: Documentation/ABI/testing/sysfs-bus-iio-chemica= l-sunrise-co2 F: Documentation/devicetree/bindings/iio/chemical/senseair,sunrise.yaml F: drivers/iio/chemical/sunrise_co2.c =20 +SENSEHAT DRIVER +M: Charles Mirabile +M: Mwesigwa Guma +M: Joel Savitz +S: Maintained +F: Documentation/devicetree/bindings/auxdisplay/raspberrypi,sensehat-displ= ay.yaml +F: Documentation/devicetree/bindings/input/raspberrypi,sensehat-joystick.y= aml +F: Documentation/devicetree/bindings/mfd/raspberrypi,sensehat.yaml +F: drivers/auxdisplay/sensehat-display.c +F: drivers/input/joystick/sensehat-joystick.c + SENSIRION SCD30 CARBON DIOXIDE SENSOR DRIVER M: Tomasz Duszynski S: Maintained --=20 2.31.1 From nobody Mon May 11 00:50:37 2026 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 AA10DC433F5 for ; Tue, 19 Apr 2022 20:52:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357781AbiDSUzj (ORCPT ); Tue, 19 Apr 2022 16:55:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43166 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357758AbiDSUz0 (ORCPT ); Tue, 19 Apr 2022 16:55:26 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 18F993F8B6 for ; Tue, 19 Apr 2022 13:52:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650401562; 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: in-reply-to:in-reply-to:references:references; bh=KgA7zSB1zNWvUvJKxcp0EzQuBRkn4DNTsRgtCcCk8xE=; b=bQKogjupc2BElg0LGjdt3eSwEw1i9dUKy0hmgef4Hc+YuKquCB9UMAmFqxCBNhsWoZRrg2 mieGJxvGx/fPQS+YK8VAbn5SRKX9l741lj2x3qMIblbkXCJfFqPHrHoxJvSLbYJfnYBBcy Y6E/rcilL+3DMkQuXKDVXlxRFSqOGBI= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-355-F4qAxMfrMmGVT2tnHmpVBg-1; Tue, 19 Apr 2022 16:52:39 -0400 X-MC-Unique: F4qAxMfrMmGVT2tnHmpVBg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D09BC3C23FD4; Tue, 19 Apr 2022 20:52:35 +0000 (UTC) Received: from cmirabil.remote.csb (unknown [10.22.8.24]) by smtp.corp.redhat.com (Postfix) with ESMTP id A9B6C2166B4F; Tue, 19 Apr 2022 20:52:31 +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, Mwesigwa Guma , Joel Savitz Subject: [PATCH v9 6/6] DO NOT MERGE: full sensehat device tree overlay for raspberry pi 4 Date: Tue, 19 Apr 2022 16:51:58 -0400 Message-Id: <20220419205158.28088-7-cmirabil@redhat.com> In-Reply-To: <20220419205158.28088-1-cmirabil@redhat.com> References: <20220419205158.28088-1-cmirabil@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This patch shold not be merged - dtbs files are not stored in the kernel tree. We just provide this file so the code can be tested. This overlay is suitable for testing the driver, it can be compiled with dtc and put in the /boot/overlays/ folder then specified in config.txt by putting the lines: dtoverlay=3D #suppress loading of default overlay for HAT dtoverlay=3Dsensehat #load custom overlay at the beginning before any other lines in config.txt Co-developed-by: Mwesigwa Guma Signed-off-by: Mwesigwa Guma Co-developed-by: Joel Savitz Signed-off-by: Joel Savitz Signed-off-by: Charles Mirabile --- sensehat.dtbs | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 sensehat.dtbs diff --git a/sensehat.dtbs b/sensehat.dtbs new file mode 100644 index 000000000000..9e5a6d9229b1 --- /dev/null +++ b/sensehat.dtbs @@ -0,0 +1,52 @@ +/dts-v1/; +/plugin/; + +/ { + compatible =3D "brcm,bcm2835"; +}; + +&i2c1 { + #address-cells =3D <0x01>; + #size-cells =3D <0x00>; + status =3D "okay"; + + sensehat@46 { + compatible =3D "raspberrypi,sensehat"; + reg =3D <0x46>; + interrupt-parent =3D <&gpio>; + status =3D "okay"; + display { + compatible =3D "raspberrypi,sensehat-display"; + status =3D "okay"; + }; + joystick { + compatible =3D "raspberrypi,sensehat-joystick"; + interrupts =3D <23 1>; + status =3D "okay"; + }; + }; + + lsm9ds1-magn@1c { + compatible =3D "st,lsm9ds1-magn"; + reg =3D <0x1c>; + status =3D "okay"; + }; + + lsm9ds1-accel@6a { + compatible =3D "st,lsm9ds1-accel"; + reg =3D <0x6a>; + status =3D "okay"; + }; + + lps25h-press@5c { + compatible =3D "st,lps25h-press"; + reg =3D <0x5c>; + status =3D "okay"; + }; + + hts221-humid@5f { + compatible =3D "st,hts221-humid\0st,hts221"; + reg =3D <0x5f>; + status =3D "okay"; + }; +}; --=20 2.31.1