From patchwork Wed Apr 5 21:22:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Patrik_Dahlstr=C3=B6m?= X-Patchwork-Id: 13202550 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 B7337C77B71 for ; Wed, 5 Apr 2023 21:22:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234081AbjDEVW5 (ORCPT ); Wed, 5 Apr 2023 17:22:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229553AbjDEVW4 (ORCPT ); Wed, 5 Apr 2023 17:22:56 -0400 Received: from pio-pvt-msa3.bahnhof.se (pio-pvt-msa3.bahnhof.se [79.136.2.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D58DB61BF; Wed, 5 Apr 2023 14:22:52 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by pio-pvt-msa3.bahnhof.se (Postfix) with ESMTP id CE9563F7F6; Wed, 5 Apr 2023 23:22:49 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at bahnhof.se Authentication-Results: pio-pvt-msa3.bahnhof.se (amavisd-new); dkim=pass (2048-bit key) header.d=dalakolonin.se Received: from pio-pvt-msa3.bahnhof.se ([127.0.0.1]) by localhost (pio-pvt-msa3.bahnhof.se [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CSjlo38pbiCi; Wed, 5 Apr 2023 23:22:48 +0200 (CEST) Received: by pio-pvt-msa3.bahnhof.se (Postfix) with ESMTPA id 4FFD83F737; Wed, 5 Apr 2023 23:22:47 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by zimbra.dalakolonin.se (Postfix) with ESMTP id CBADB94DC3; Wed, 5 Apr 2023 21:22:46 +0000 (UTC) Received: from zimbra.dalakolonin.se ([127.0.0.1]) by localhost (zimbra.dalakolonin.se [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id gYLVWoSoLt8J; Wed, 5 Apr 2023 21:22:42 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by zimbra.dalakolonin.se (Postfix) with ESMTP id 7F8A194DBF; Wed, 5 Apr 2023 21:22:42 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.10.3 zimbra.dalakolonin.se 7F8A194DBF DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dalakolonin.se; s=D374B428-D0A7-11ED-A657-75977B426508; t=1680729762; bh=aj7BJRGxp0A9WS53Fydt2hDFp/YXbSvFyWVqf4RUrfw=; h=From:To:Date:Message-Id:MIME-Version; b=bgdIWoBUGPYAQhu1xrYc6MAx9vWBNBCKkO0zkm/3GJ7H+ZPNaZ1vHbDdpEgfP2m8N fP4UiShsNJRTysFzMLYkDm1iCBLhmFnH64PMxWTqyZ9CHobGLArlkW0QlrnPKUiSf4 j8SSIlGa6HG5+SAnG+epPRZuLR4ZsooJTdMpHp9Ck2p0nDW3ExWxuMXBLalfBdnPPa v4VZ+9PHJbEsuQ+igZD3xcy3zF4Wpy4Yjt9LwO0EJbWFl1HwY5bO7X2ADT9OCMv4Eq /LULOV3xEZr+u9PN02g2qjQVfh4bkgXzz/KIcwjFzTrMpdz0IWuuB61fL5YGZ/oaTS /vj95R3EoynCg== X-Virus-Scanned: amavisd-new at dalakolonin.se Received: from zimbra.dalakolonin.se ([127.0.0.1]) by localhost (zimbra.dalakolonin.se [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id brz31VNIynod; Wed, 5 Apr 2023 21:22:42 +0000 (UTC) Received: from rack-server-1.dalakolonin.se (unknown [172.17.0.1]) by zimbra.dalakolonin.se (Postfix) with ESMTPSA id F0FE394DBC; Wed, 5 Apr 2023 21:22:41 +0000 (UTC) From: =?utf-8?q?Patrik_Dahlstr=C3=B6m?= To: linux-iio@vger.kernel.org Cc: linux-kernel@vger.kernel.org, letux-kernel@openphoenux.org, kernel@pyra-handheld.com, pgoudagunta@nvidia.com, hns@goldelico.com, jic23@kernel.org, lars@metafoo.de, linux-omap@vger.kernel.org, =?utf-8?q?Pa?= =?utf-8?q?trik_Dahlstr=C3=B6m?= Subject: [PATCH v3 0/7] iio: adc: palmas_gpadc: add iio events Date: Wed, 5 Apr 2023 23:22:26 +0200 Message-Id: <20230405212233.4167986-1-risca@dalakolonin.se> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org This series is based on linux-next/master [1] and [2]. The palmas gpadc block has support for monitoring up to 2 ADC channels and issue an interrupt if they reach past a set threshold. This can be configured statically with device tree today, but it only gets enabled when reaching sleep mode. Also, it doesn't look like anyone is using it. Instead of this one special case, change the code so userspace can configure the ADC channels to their own needs through the iio events subsystem. The high and low threshold values can be set for every channel, but only 2 thresholds can be enabled at a time. Trying to enable more than 2 thresholds will result in an error. The configured thresholds will wake up the system from sleep mode if wakeup is enabled in /sys/devices/.../power/wakeup. The old platform data was removed. Thresholds, events, and wakeup were tested on omap5-uevm board. It wakes up from sleep mode when wakeup is enabled and a threshold is passed. A userspace tool for monitoring events and adjusting thresholds can be found at [3]. V2 -> V3: * Rebased to linux-next. * Avoid reconfiguring events on error and when old == new value. V1 -> V2: * Begin by removing adc_wakeupX_data instead of doing it last. * Split changes in smaller patches [1] git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git [2] https://lore.kernel.org/linux-iio/20230318163039.56115-1-jic23@kernel.org/ [3] https://github.com/Risca/pyra_vol_mon Patrik Dahlström (7): iio: adc: palmas: remove adc_wakeupX_data iio: adc: palmas: replace "wakeup" with "event" iio: adc: palmas: use iio_event_direction for threshold polarity iio: adc: palmas: move eventX_enable into palmas_adc_event iio: adc: palmas: always reset events on unload iio: adc: palmas: add support for iio threshold events iio: adc: palmas: don't alter event config on suspend/resume drivers/iio/adc/palmas_gpadc.c | 559 +++++++++++++++++++++++++++------ include/linux/mfd/palmas.h | 8 - 2 files changed, 464 insertions(+), 103 deletions(-) base-commit: 8417c8f5007bf4567ccffda850a3157c7d905f67 prerequisite-patch-id: b0418c707db13f514400956596e9ebe91c25bba0