From patchwork Wed Nov 29 13:03:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nuno Sa via B4 Relay X-Patchwork-Id: 13472834 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 A76DC1DFE9; Wed, 29 Nov 2023 13:05:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="kLu42g5S" Received: by smtp.kernel.org (Postfix) with ESMTPS id 4C358C433CA; Wed, 29 Nov 2023 13:05:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701263128; bh=nr6I60+Ybh8j/RB6wm/XTGHNHpMDeabpoOKt6I7wF7k=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=kLu42g5SOSuJnnT2wBr+E4ov2dyAzoe5BgvcxowGhZ2qoE8Ja7JuY3xdAR+dkHj97 FCA7DsoYIn7QazBENctWp6ky9hjW5XjCI9t5cllz/96pu9hdAugFei/RSFSX9W3EF6 OLoprml8NwrqnTi5+GiCX3wlwz9ywjf/RofJoS1UJSskKFPb2GcSIOgDZ73EEbDTOX NGHsI5SI7RRQoYMN1AoBYLsNzJqpRq6yy0stdhJLx2gQUQPwari60JV9/AQUrSj+Py lqBTHMsR39gCAUUL3+6j7d0dJ88NlM/XvvD4rsl8ZPKFTvicME0UQ9BmLU9R+kp6eJ VWyJ0dxTGQksw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2C885C07E98; Wed, 29 Nov 2023 13:05:28 +0000 (UTC) From: Nuno Sa via B4 Relay Date: Wed, 29 Nov 2023 14:03:53 +0100 Subject: [PATCH v3 2/2] iio: dac: ad5791: Add support for controlling RBUF via devicetree Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20231129-ad5791-michael-stuff-v3-2-48e192b00909@analog.com> References: <20231129-ad5791-michael-stuff-v3-0-48e192b00909@analog.com> In-Reply-To: <20231129-ad5791-michael-stuff-v3-0-48e192b00909@analog.com> To: linux-iio@vger.kernel.org, devicetree@vger.kernel.org Cc: Lars-Peter Clausen , Michael Hennerich , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Cameron , Michael Hennerich , Nuno Sa X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1701263126; l=1575; i=nuno.sa@analog.com; s=20231116; h=from:subject:message-id; bh=V60ayX58Xp4oAs8NlC1uKeQ7LGPvuaHa+/Zm9B0Kn5A=; b=ufZVj/adYMkr7AgruJ5YgTvck+QD00d9QfRjuhHhfDzBIF3EzzsE/Q0GpfDhWfggsEQIQ12G0 leoyFyCzUbOBYdiQhIbD04300vJxGGRObSWrdpCXCkkmpoBLDw16O2m X-Developer-Key: i=nuno.sa@analog.com; a=ed25519; pk=3NQwYA013OUYZsmDFBf8rmyyr5iQlxV/9H4/Df83o1E= X-Endpoint-Received: by B4 Relay for nuno.sa@analog.com/20231116 with auth_id=100 X-Original-From: Nuno Sa Reply-To: From: Michael Hennerich This patch adds support for an external amplifier to be connected in a gain of two configuration. Signed-off-by: Michael Hennerich Signed-off-by: Nuno Sa --- drivers/iio/dac/ad5791.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c index a4167454da81..75b549827e15 100644 --- a/drivers/iio/dac/ad5791.c +++ b/drivers/iio/dac/ad5791.c @@ -345,6 +345,7 @@ static int ad5791_probe(struct spi_device *spi) struct iio_dev *indio_dev; struct ad5791_state *st; int ret, pos_voltage_uv = 0, neg_voltage_uv = 0; + bool use_rbuf_gain2; indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); if (!indio_dev) @@ -379,6 +380,12 @@ static int ad5791_probe(struct spi_device *spi) st->pwr_down = true; st->spi = spi; + if (pdata) + use_rbuf_gain2 = pdata->use_rbuf_gain2; + else + use_rbuf_gain2 = device_property_read_bool(&spi->dev, + "adi,rbuf-gain2-en"); + if (!IS_ERR(st->reg_vss) && !IS_ERR(st->reg_vdd)) { st->vref_mv = (pos_voltage_uv + neg_voltage_uv) / 1000; st->vref_neg_mv = neg_voltage_uv / 1000; @@ -398,7 +405,7 @@ static int ad5791_probe(struct spi_device *spi) st->ctrl = AD5761_CTRL_LINCOMP(st->chip_info->get_lin_comp(st->vref_mv)) - | ((pdata && pdata->use_rbuf_gain2) ? 0 : AD5791_CTRL_RBUF) | + | (use_rbuf_gain2 ? 0 : AD5791_CTRL_RBUF) | AD5791_CTRL_BIN2SC; ret = ad5791_spi_write(st, AD5791_ADDR_CTRL, st->ctrl |