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([188.24.51.27]) by smtp.gmail.com with ESMTPSA id w7-20020a5d5447000000b0031980294e9fsm2356297wrv.116.2023.11.07.05.21.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Nov 2023 05:21:24 -0800 (PST) From: Ana-Maria Cusco To: Ana-Maria Cusco Cc: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] iio: amplifiers: hmc425a: add support for ADRF5740 Attenuator Date: Tue, 7 Nov 2023 15:21:16 +0200 Message-Id: <20231107132118.1165494-2-anamaria.cuscoo@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231107132118.1165494-1-anamaria.cuscoo@gmail.com> References: <20231107132118.1165494-1-anamaria.cuscoo@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Ana-Maria Cusco This adds support for the Analog Devices ADRF5740 2 dB LSB, 4-Bit, Silicon Digital Attenuator, 10 MHz to 60 GHz Signed-off-by: Ana-Maria Cusco --- drivers/iio/amplifiers/hmc425a.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/iio/amplifiers/hmc425a.c b/drivers/iio/amplifiers/hmc425a.c index e87d35d50a95..ed4d72922696 100644 --- a/drivers/iio/amplifiers/hmc425a.c +++ b/drivers/iio/amplifiers/hmc425a.c @@ -5,6 +5,7 @@ * Copyright 2020 Analog Devices Inc. */ +#include #include #include #include @@ -22,6 +23,7 @@ enum hmc425a_type { ID_HMC425A, ID_HMC540S, + ID_ADRF5740 }; struct hmc425a_chip_info { @@ -74,6 +76,10 @@ static int hmc425a_read_raw(struct iio_dev *indio_dev, case ID_HMC540S: gain = ~code * -1000; break; + case ID_ADRF5740: + code = code & BIT(3) ? code & ~BIT(2) : code; + gain = code * -2000; + break; } *val = gain / 1000; @@ -113,6 +119,10 @@ static int hmc425a_write_raw(struct iio_dev *indio_dev, case ID_HMC540S: code = ~((abs(gain) / 1000) & 0xF); break; + case ID_ADRF5740: + code = (abs(gain) / 2000) & 0xF; + code = code & BIT(3) ? code | BIT(2) : code; + break; } mutex_lock(&st->lock); @@ -165,6 +175,7 @@ static const struct iio_chan_spec hmc425a_channels[] = { static const struct of_device_id hmc425a_of_match[] = { { .compatible = "adi,hmc425a", .data = (void *)ID_HMC425A }, { .compatible = "adi,hmc540s", .data = (void *)ID_HMC540S }, + { .compatible = "adi,adrf5740", .data = (void *)ID_ADRF5740 }, {}, }; MODULE_DEVICE_TABLE(of, hmc425a_of_match); @@ -188,6 +199,15 @@ static struct hmc425a_chip_info hmc425a_chip_info_tbl[] = { .gain_max = 0, .default_gain = -0x10, /* set default gain -15.0db*/ }, + [ID_ADRF5740] = { + .name = "adrf5740", + .channels = hmc425a_channels, + .num_channels = ARRAY_SIZE(hmc425a_channels), + .num_gpios = 4, + .gain_min = -22000, + .gain_max = 0, + .default_gain = 0xF, /* set default gain -22.0db*/ + }, }; static int hmc425a_probe(struct platform_device *pdev) @@ -229,6 +249,9 @@ static int hmc425a_probe(struct platform_device *pdev) indio_dev->info = &hmc425a_info; indio_dev->modes = INDIO_DIRECT_MODE; + /* Set default gain */ + hmc425a_write(indio_dev, st->gain); + return devm_iio_device_register(&pdev->dev, indio_dev); }