From patchwork Tue Jun 28 15:16:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu Beznea X-Patchwork-Id: 12898453 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 9BE69C43334 for ; Tue, 28 Jun 2022 15:15:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348089AbiF1PPl (ORCPT ); Tue, 28 Jun 2022 11:15:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348073AbiF1PP0 (ORCPT ); Tue, 28 Jun 2022 11:15:26 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3ED1A31935; Tue, 28 Jun 2022 08:15:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1656429306; x=1687965306; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=kbS6MV36E9L6Q/MJHR1bHBbR1Vvaq/P+yXwc71c9k0c=; b=jRFMH/ybzNs0j64Yw4BHtnC2bWMUBQOcvGb8LWSVqcswDqFATfmlOcBe ApG4K2uDJ03OAvNXrOtxTeLms/fI2ByBpOePULvu8Z4PH1+8U43fpYVv4 QxFu1ndSLKWBBi2cwdNvP7fnLKDpmPSNu5wC24dMsu1ClM2SUq76mokhC eQsmzDIdxQDoOqU/MPMupi1cUlieB1myPan1HIHsSPZzeUnLCCKjz3ExV Rtai+D07o0ur7aU2hFY94Czy2Aed7u/CGVumiNjQDIzwJkbXWQLuE5J42 c1SoSYh4q+JaFqijD0Lq9Gg4o0r01RaWD0xZhy12dU7GdxCzOBQTVdF4x A==; X-IronPort-AV: E=Sophos;i="5.92,229,1650956400"; d="scan'208";a="102111452" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa6.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 28 Jun 2022 08:15:04 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.85.143) by chn-vm-ex02.mchp-main.com (10.10.85.144) 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 08:15:01 -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 08:14:58 -0700 From: Claudiu Beznea To: , , , , , , , CC: , , , Subject: [PATCH v2 14/19] iio: adc: at91-sama5d2_adc: add startup and tracktim as parameter for at91_adc_setup_samp_freq() Date: Tue, 28 Jun 2022 18:16:26 +0300 Message-ID: <20220628151631.3116454-15-claudiu.beznea@microchip.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20220628151631.3116454-1-claudiu.beznea@microchip.com> References: <20220628151631.3116454-1-claudiu.beznea@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Add startup and tracktim as parameter for at91_adc_setup_samp_freq() function. In case of temperature sensor being enabled these parameters will be configured on temperature read request to improve the accuracy of the read temperature. Signed-off-by: Claudiu Beznea --- drivers/iio/adc/at91-sama5d2_adc.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index ee67f944b58c..3de5d1cb8a12 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1432,7 +1432,9 @@ static unsigned at91_adc_startup_time(unsigned startup_time_min, return i; } -static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq) +static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq, + unsigned int startup_time, + unsigned int tracktim) { struct at91_adc_state *st = iio_priv(indio_dev); unsigned f_per, prescal, startup, mr; @@ -1440,17 +1442,17 @@ static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq) f_per = clk_get_rate(st->per_clk); prescal = (f_per / (2 * freq)) - 1; - startup = at91_adc_startup_time(st->soc_info.startup_time, - freq / 1000); + startup = at91_adc_startup_time(startup_time, freq / 1000); mr = at91_adc_readl(st, MR); mr &= ~(AT91_SAMA5D2_MR_STARTUP_MASK | AT91_SAMA5D2_MR_PRESCAL_MASK); mr |= AT91_SAMA5D2_MR_STARTUP(startup); mr |= AT91_SAMA5D2_MR_PRESCAL(prescal); + mr |= AT91_SAMA5D2_MR_TRACKTIM(tracktim); at91_adc_writel(st, MR, mr); - dev_dbg(&indio_dev->dev, "freq: %u, startup: %u, prescal: %u\n", - freq, startup, prescal); + dev_dbg(&indio_dev->dev, "freq: %u, startup: %u, prescal: %u, tracktim=%u\n", + freq, startup, prescal, tracktim); st->current_sample_rate = freq; } @@ -1722,7 +1724,8 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, if (ret) return ret; mutex_lock(&st->lock); - at91_adc_setup_samp_freq(indio_dev, val); + at91_adc_setup_samp_freq(indio_dev, val, + st->soc_info.startup_time, 0); mutex_unlock(&st->lock); iio_device_release_direct_mode(indio_dev); return 0; @@ -1904,7 +1907,8 @@ static void at91_adc_hw_init(struct iio_dev *indio_dev) at91_adc_writel(st, MR, AT91_SAMA5D2_MR_TRANSFER(2) | AT91_SAMA5D2_MR_ANACH); - at91_adc_setup_samp_freq(indio_dev, st->soc_info.min_sample_rate); + at91_adc_setup_samp_freq(indio_dev, st->soc_info.min_sample_rate, + st->soc_info.startup_time, 0); /* configure extended mode register */ at91_adc_config_emr(st, st->oversampling_ratio, 0);