From patchwork Tue Jun 28 15:16:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu Beznea X-Patchwork-Id: 1649606 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=microchip.com header.i=@microchip.com header.a=rsa-sha256 header.s=mchp header.b=0RKNCEwf; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4LXSn32SK7z9sGC for ; Wed, 29 Jun 2022 01:14:31 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346737AbiF1PO2 (ORCPT ); Tue, 28 Jun 2022 11:14:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347532AbiF1POX (ORCPT ); Tue, 28 Jun 2022 11:14:23 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E55F82D1D2; Tue, 28 Jun 2022 08:14:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1656429260; x=1687965260; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=wMU0LIcd6S290PqHZw/nq7NIsUSg5LahG1AgMvpc6Lg=; b=0RKNCEwfTAZY5HfMYfX8kesRRM1tPX/Kt/sGvuJEbhD3LGNFpGWuXmxX NBGwYRUIsc4hncQjkzWRmphv4dSiiaT1vi2loP+IhB1S07z/7adLd/67A VRChbHR6tLfWGCxljcD6SE3BiUe2KD+uokPpNpCmxY/WpbX5MiIhpSSgA 28lCDlntAZfzCqoSljsyyhyRrTNNRfu7Ts3St6CZF/CaAaBweXnutiEWD iTM4mECzrV5PPKlLBfHLpVYDlpgAn5SgdExEJQlbaKZN4YxNz5+Adx33M tScMOL+7FdFL/sMm3TAueyeM8uY4jr7Ed12i6l0pYRjDKMOXCBx+Dv56d g==; X-IronPort-AV: E=Sophos;i="5.92,229,1650956400"; d="scan'208";a="165465211" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 28 Jun 2022 08:14:18 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.85.143) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Tue, 28 Jun 2022 08:14:12 -0700 Received: from localhost.localdomain (10.10.115.15) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Tue, 28 Jun 2022 08:14:09 -0700 From: Claudiu Beznea To: , , , , , , , CC: , , , Subject: [PATCH v2 00/19] iio: adc: at91-sama5d2_adc: add support for temperature sensor Date: Tue, 28 Jun 2022 18:16:12 +0300 Message-ID: <20220628151631.3116454-1-claudiu.beznea@microchip.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi, The following series add support for temperature sensor available on SAMA7G5. Temperature sensor available on SAMA7G5 provides 2 outputs VTEMP and VBG. VTEMP is proportional to the absolute temperature voltage and VBG is a quasi-temperature independent voltage. Both are necessary in computing the temperature (for better accuracy). Also, for better accuracy the following settings were imposed when measusing the temperature: oversampling rate of 256, sampling frequency of 10MHz, a startup time of 512 ticks, MR.tracktim=0xf, EMR.trackx=0x3. For computing the temperature measured by ADC calibration data is necessary. This is provided via OTP memory available on SAMA7G5. Patches 1/19-4/19 provides some fixes. Patches 5/19-16/19 prepares for the addition of temperature sensor support. Patch 17/16 adds the temperature sensor support. Along with temperature sensor support I took the chance and added runtime PM support in this series, too (handled in patch 19/19). The rest of patches in this series are minor cleanups. Thank you, Claudiu Beznea Changes in v2: - addressed review comments - with this, new patches were intruced in this series: 2/19, 4/19, 8/19, 9,19 - runtime pm support has been adapted to work also when CONFIG_PM is not enabled - collected tags Claudiu Beznea (19): iio: adc: at91-sama5d2_adc: fix AT91_SAMA5D2_MR_TRACKTIM_MAX iio: adc: at91-sama5d2_adc: check return status for pressure and touch iio: adc: at91-sama5d2_adc: lock around oversampling and sample freq iio: adc: at91-sama5d2_adc: disable/prepare buffer on suspend/resume iio: adc: at91-sama5d2_adc: exit from write_raw() when buffers are enabled iio: adc: at91-sama5d2_adc: handle different EMR.OSR for different hw versions iio: adc: at91-sama5d2_adc: move the check of oversampling in its function iio: adc: at91-sama5d2_adc: drop AT91_OSR_XSAMPLES defines iio: adc: at91-sama5d2_adc: add .read_avail() chan_info ops iio: adc: at91-sama5d2_adc: adjust osr based on specific platform data iio: adc: at91-sama5d2_adc: add 64 and 256 oversampling ratio iio: adc: at91-sama5d2_adc: move oversampling storage in its function iio: adc: at91-sama5d2_adc: update trackx on emr iio: adc: at91-sama5d2_adc: add startup and tracktim as parameter for at91_adc_setup_samp_freq() iio: adc: at91-sama5d2_adc: lock around at91_adc_read_info_raw() dt-bindings: iio: adc: at91-sama5d2_adc: add id for temperature channel iio: adc: at91-sama5d2_adc: add support for temperature sensor iio: adc: at91-sama5d2_adc: add empty line after functions iio: adc: at91-sama5d2_adc: add runtime pm support drivers/iio/adc/at91-sama5d2_adc.c | 683 +++++++++++++++--- .../dt-bindings/iio/adc/at91-sama5d2_adc.h | 3 + 2 files changed, 566 insertions(+), 120 deletions(-)