From patchwork Wed Aug 3 10:28:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu Beznea X-Patchwork-Id: 12935356 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 4FD70C19F28 for ; Wed, 3 Aug 2022 10:26:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234861AbiHCK0n (ORCPT ); Wed, 3 Aug 2022 06:26:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33406 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233563AbiHCK0m (ORCPT ); Wed, 3 Aug 2022 06:26:42 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3D3741F2DB; Wed, 3 Aug 2022 03:26:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1659522399; x=1691058399; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=9bP0d3qqmjGzLGVmWvrgp4/m2jcaKZ09NEpkHpIYWQU=; b=c2AQIhbD5Cllsqu+K885QS/hSAW+lQnosszO3RsQ70UtJ3eNSPfU4yng /XEABgR8vUu9Cj1Vc8ryQmtlGz/ma1Z6ULr3xllgK41Toz+zeW1tKmG8l aoM7zrTZmft6trZu5orNvUz14mGc1/03A2EF4hOQVIzGcPthniTpAzIL0 1llBFkOZBnupEF7+Jj9VrvILnjiENc7nJbHTUJCeUhdoMB2ozd00kB/1c AFpiGAAC9AL21t2q7eEWbvkXzTHQFlLDIh/FuVyfyiFoeBJ6JvCVIyeVd hU2Cp5RRWjfpeiE+HpciDcBGgXQmJqu5Bbt5RvbIakrIbnJEw2mnqJK+Z g==; X-IronPort-AV: E=Sophos;i="5.93,214,1654585200"; d="scan'208";a="174716534" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 03 Aug 2022 03:26:38 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) 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 15.1.2375.28; Wed, 3 Aug 2022 03:26:38 -0700 Received: from localhost.localdomain (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2375.28 via Frontend Transport; Wed, 3 Aug 2022 03:26:35 -0700 From: Claudiu Beznea To: , , , , , , CC: , , , , Claudiu Beznea Subject: [PATCH v3 00/19] iio: adc: at91-sama5d2_adc: add support for temperature sensor Date: Wed, 3 Aug 2022 13:28:36 +0300 Message-ID: <20220803102855.2191070-1-claudiu.beznea@microchip.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@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 v3: - fixed compilation warning by adjusting patches 10/19, 11/19 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 | 684 +++++++++++++++--- .../dt-bindings/iio/adc/at91-sama5d2_adc.h | 3 + 2 files changed, 568 insertions(+), 119 deletions(-)