From patchwork Thu Mar 6 19:05:27 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Winchenbach X-Patchwork-Id: 14005245 Received: from out-14.pe-a.jellyfish.systems (out-14.pe-a.jellyfish.systems [198.54.127.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2C33D2110E; Thu, 6 Mar 2025 19:15:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.54.127.78 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741288502; cv=none; b=dZG25MSIL0U8wAcx4r9Fls1OGFUpInZ/2YFaFWAibPEUBvWpXyNldnjYStDfgPU/0ZEGZRqgISPgr5sVvyJGGKlO1YTzX7rJkX73MMKJmTl7oPAZv2vk8LXvebVIIbcrtriIRjHsTg0qEX+g7bGgQjY1kghyqCOPMts6Ev3rM4Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741288502; c=relaxed/simple; bh=+Ik/gdyh+zfeJEolmcvNxqa0jLVuR+8H4QG2zWcmDDE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KDzX5YxPMMS941+h7Du4G7Ugw+ZUNrW4PsIvhf7UFcZhp/4qKAHQHCdvsj7n2NdxYwydQEoNmzrsEsExdqKH3e7Nb41mL5zcEcONz9mNk1XZL9BzDcK1zLWE4VEPcH/eI0KS/6FQ2HAMal3X9iq5M7XMLBYAgdbhfp8IR3XBdko= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=framepointer.org; spf=pass smtp.mailfrom=framepointer.org; dkim=pass (2048-bit key) header.d=framepointer.org header.i=@framepointer.org header.b=QV60so3i; arc=none smtp.client-ip=198.54.127.78 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=framepointer.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=framepointer.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=framepointer.org header.i=@framepointer.org header.b="QV60so3i" Received: from prod-lbout-phx.jellyfish.systems (new-01-3.privateemail.com [66.29.159.56]) by pe-a.jellyfish.systems (Postfix) with ESMTPA id 4Z7zQq2zwDz3xSr; Thu, 06 Mar 2025 19:05:55 +0000 (UTC) Received: from MTA-07.privateemail.com (unknown [10.50.14.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by NEW-01-3.privateemail.com (Postfix) with ESMTPS id 4Z7zQq1Zf7z2Sd0Q; Thu, 6 Mar 2025 14:05:55 -0500 (EST) Received: from mta-07.privateemail.com (localhost [127.0.0.1]) by mta-07.privateemail.com (Postfix) with ESMTP id 4Z7zQq07Z3z3hhVH; Thu, 6 Mar 2025 14:05:55 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=framepointer.org; s=default; t=1741287955; bh=+Ik/gdyh+zfeJEolmcvNxqa0jLVuR+8H4QG2zWcmDDE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QV60so3iPg5fj6T3WvRDLiDrQVeb8QnbZ8hMzDjyWbAML4UkZHZ0orhOjnKHXa6P1 Gq66mq7rFg8F1L4E4/d/YVwRNRjEO95k7PimMXz7vmGPfvQ1oLVtF8gcPhifgVgtj9 oyztUOaY8YnEe1+xYPDD3lC1Gmi1f61Qs/jh3lupKwDwZFmEZip86k6acKAh/4JUPL rfM17rR8M6NRYfIDwW1n8aUrkF9C+Lc3G/GYW67TS2zPg+5c3fSPjJGoC2Kjn02vKN Vu8rGLVZYTBwJLhPVvDnTNirrFqy4/kkgLVJB1/jT8lYdUcjAeKECoW29Uh7yeC+us FCElsU+Lp+wkw== Received: from 65YTFL3.secure.tethers.com (unknown [152.44.190.141]) by mta-07.privateemail.com (Postfix) with ESMTPA; Thu, 6 Mar 2025 14:05:41 -0500 (EST) From: Sam Winchenbach To: linux-kernel@vger.kernel.org Cc: lars@metafoo.de, Michael.Hennerich@analog.com, antoniu.miclaus@analog.com, jic23@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, sam.winchenbach@framepointer.org, bpellegrino@arka.org Subject: [PATCH 5/6] driver core: Add support for writing 64 bit attrs Date: Thu, 6 Mar 2025 14:05:27 -0500 Message-ID: <20250306190528.152133-1-sam.winchenbach@framepointer.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250306183314.150253-1-sam.winchenbach@framepointer.org> References: <20250306183314.150253-1-sam.winchenbach@framepointer.org> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Virus-Scanned: ClamAV using ClamSMTP Prior to this patch it was only possible to read 64 bit integers. Signed-off-by: Sam Winchenbach --- drivers/iio/industrialio-core.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index a2117ad1337d..b2436b8f3eea 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -965,8 +965,10 @@ static ssize_t iio_write_channel_info(struct device *dev, struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); int ret, fract_mult = 100000; int integer, fract = 0; + long long integer64; bool is_char = false; bool scale_db = false; + bool is_64bit = false; /* Assumes decimal - precision based on number of digits */ if (!indio_dev->info->write_raw) @@ -990,6 +992,9 @@ static ssize_t iio_write_channel_info(struct device *dev, case IIO_VAL_CHAR: is_char = true; break; + case IIO_VAL_INT_64: + is_64bit = true; + break; default: return -EINVAL; } @@ -1000,6 +1005,13 @@ static ssize_t iio_write_channel_info(struct device *dev, if (sscanf(buf, "%c", &ch) != 1) return -EINVAL; integer = ch; + } else if (is_64bit) { + ret = kstrtoll(buf, 0, &integer64); + if (ret) + return ret; + + fract = (int)(integer64 >> 32); + integer = (int)(integer64 & 0xFFFFFFFF); } else { ret = __iio_str_to_fixpoint(buf, fract_mult, &integer, &fract, scale_db);