From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1F52F34A77E; Wed, 3 Dec 2025 16:01:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764777667; cv=none; b=M8qUde7cgdW8VeM0cqz/igB9AgQWfDNNGvCwrosUy+RtqHQmbHtac61lQk+F9+1D9xomd8nCzhssjA5MO1+zNt5mM/1RrOcRByxBu3uFjVnFOKFbtSgIDjTX56OUxTAdGvqLNtdUeg9ydZJjZ2BZzw5sz1XTbkCynUt5T2N/XQE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764777667; c=relaxed/simple; bh=WAJndhheaQWhDobcJqDngIqhlsW5EkT/lpfAbnnkTmk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IE1vRclxr2jr3336HJw6V1iky2fHNVyIFGc1gNLtlQp+a6bVTkxWWdV7nxumNlvPsoAAzQWZ9OItz6K90wzR3FchFNrmQYgblAOMw/W/Q+JkhObxpyl3/XTWXT5CMztuFce208FaMj58oQvVTG/Bhr1PCf2xkWrN2J54N7EpiFg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=YFtjzu1u; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="YFtjzu1u" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 81DE3C4CEF5; Wed, 3 Dec 2025 16:01:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1764777667; bh=WAJndhheaQWhDobcJqDngIqhlsW5EkT/lpfAbnnkTmk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YFtjzu1uD1SKYEf8KIIAW2NdBbZKzDz/zoBiEPd9+vCk9f/bgMsz4K8E6cQh1YCWJ RtdIWsrbIEy48GDYlM7c1QfBFLaYWKR1EAgdsVx3NdQLJlOk47YlIR7dilZK0JJING Kcse3mCX7GbsGlJ7h9i698s9+o8a7DTHV1JqkVTY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Rodrigo Gobbi , David Lechner , Jonathan Cameron , Sasha Levin Subject: [PATCH 5.15 109/392] iio: adc: spear_adc: mask SPEAR_ADC_STATUS channel and avg sample before setting register Date: Wed, 3 Dec 2025 16:24:19 +0100 Message-ID: <20251203152418.109529204@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251203152414.082328008@linuxfoundation.org> References: <20251203152414.082328008@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Rodrigo Gobbi [ Upstream commit d75c7021c08e8ae3f311ef2464dca0eaf75fab9f ] avg sample info is a bit field coded inside the following bits: 5,6,7 and 8 of a device status register. Channel num info the same, but over bits: 1, 2 and 3. Mask both values in order to avoid touching other register bits, since the first info (avg sample), came from DT. Signed-off-by: Rodrigo Gobbi Reviewed-by: David Lechner Link: https://patch.msgid.link/20250717221559.158872-1-rodrigo.gobbi.7@gmail.com Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin --- drivers/iio/adc/spear_adc.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/spear_adc.c b/drivers/iio/adc/spear_adc.c index d93e580b3dc5b..8fda16dd012f7 100644 --- a/drivers/iio/adc/spear_adc.c +++ b/drivers/iio/adc/spear_adc.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -29,9 +30,9 @@ /* Bit definitions for SPEAR_ADC_STATUS */ #define SPEAR_ADC_STATUS_START_CONVERSION BIT(0) -#define SPEAR_ADC_STATUS_CHANNEL_NUM(x) ((x) << 1) +#define SPEAR_ADC_STATUS_CHANNEL_NUM_MASK GENMASK(3, 1) #define SPEAR_ADC_STATUS_ADC_ENABLE BIT(4) -#define SPEAR_ADC_STATUS_AVG_SAMPLE(x) ((x) << 5) +#define SPEAR_ADC_STATUS_AVG_SAMPLE_MASK GENMASK(8, 5) #define SPEAR_ADC_STATUS_VREF_INTERNAL BIT(9) #define SPEAR_ADC_DATA_MASK 0x03ff @@ -157,8 +158,8 @@ static int spear_adc_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_RAW: mutex_lock(&st->lock); - status = SPEAR_ADC_STATUS_CHANNEL_NUM(chan->channel) | - SPEAR_ADC_STATUS_AVG_SAMPLE(st->avg_samples) | + status = FIELD_PREP(SPEAR_ADC_STATUS_CHANNEL_NUM_MASK, chan->channel) | + FIELD_PREP(SPEAR_ADC_STATUS_AVG_SAMPLE_MASK, st->avg_samples) | SPEAR_ADC_STATUS_START_CONVERSION | SPEAR_ADC_STATUS_ADC_ENABLE; if (st->vref_external == 0) -- 2.51.0