From patchwork Thu Jan 18 08:58:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kim Seer Paller X-Patchwork-Id: 13522596 Received: from mx0b-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) (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 736F712E73; Thu, 18 Jan 2024 08:59:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.135.77 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705568382; cv=none; b=TP1KanatwKlE0HYYxiP1Sm8iPuUjQ07DY5aEkL2T+FXX8q+t99Cu/cQ/BL2dVftvWGX4sDSZJNoyhLXjvPlkeJX/OIQ+JHD/2SYU/i7W5thO8Bwlm5/On9PqQbEb5O1GXPKM4JC/CMftpOHyZDbiuaMirVaue7qEIPQfDCaoY/c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705568382; c=relaxed/simple; bh=jG5dFO+oAm7Mx46m57mxnrrnfF8Nl/zSkDVb0/C+v2k=; h=Received:Received:Received:Received:Received:Received:From:To:CC: Subject:Date:Message-ID:X-Mailer:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding:Content-Type: X-ADIRuleOP-NewSCL:X-Proofpoint-ORIG-GUID:X-Proofpoint-GUID: X-Proofpoint-Virus-Version:X-Proofpoint-Spam-Details; b=uZy2aFWQDYgONchBWjqePMQ/lBh04hbxSXlVi6jyNULaAAMT+RcLS9hgNeOubxHXPDFh4exAgfPBNhApH8zydCAQuIvHn844YPhXZ60BtvGpZBnjqYcDq1ORgOnlaXyn2mKCwitms1f/Sh42NT3aqMyfqcCzgIdpToz6z9ACYiI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com; spf=pass smtp.mailfrom=analog.com; arc=none smtp.client-ip=148.163.135.77 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=analog.com Received: from pps.filterd (m0375855.ppops.net [127.0.0.1]) by mx0b-00128a01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40I6lXxE003659; Thu, 18 Jan 2024 03:59:25 -0500 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0b-00128a01.pphosted.com (PPS) with ESMTPS id 3vpy1fgfkd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Jan 2024 03:59:24 -0500 (EST) Received: from ASHBMBX8.ad.analog.com (ASHBMBX8.ad.analog.com [10.64.17.5]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 40I8xNtu001133 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 18 Jan 2024 03:59:23 -0500 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) by ASHBMBX8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Thu, 18 Jan 2024 03:59:22 -0500 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Thu, 18 Jan 2024 03:59:22 -0500 Received: from kim-VirtualBox.ad.analog.com (KPALLER2-L03.ad.analog.com [10.116.242.67]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 40I8x0RC005188; Thu, 18 Jan 2024 03:59:14 -0500 From: Kim Seer Paller To: , , CC: Jonathan Cameron , Lars-Peter Clausen , Michael Hennerich , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Crt Mori , Linus Walleij , Bartosz Golaszewski , Kim Seer Paller Subject: [PATCH v6 1/2] dt-bindings: iio: frequency: add admfm2000 Date: Thu, 18 Jan 2024 16:58:55 +0800 Message-ID: <20240118085856.70758-2-kimseer.paller@analog.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240118085856.70758-1-kimseer.paller@analog.com> References: <20240118085856.70758-1-kimseer.paller@analog.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-ORIG-GUID: -oVpBpJr9cfTjbHoXnz-U5EAWF4YbPbA X-Proofpoint-GUID: -oVpBpJr9cfTjbHoXnz-U5EAWF4YbPbA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-18_04,2024-01-17_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 phishscore=0 mlxlogscore=999 spamscore=0 mlxscore=0 priorityscore=1501 suspectscore=0 clxscore=1015 adultscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401180063 Dual microwave down converter module with input RF and LO frequency ranges from 0.5 to 32 GHz and an output IF frequency range from 0.1 to 8 GHz. It consists of a LNA, mixer, IF filter, DSA, and IF amplifier for each down conversion path. Signed-off-by: Kim Seer Paller --- V5 -> V6: Moved array of switch and attenuation GPIOs to the channel node. Changed pin coords with friendly names. Removed Reviewed-by tag. V4 -> V5: Added Reviewed-by tag. V3 -> V4: Updated the description of the properties with multiple entries and defined the order. V2 -> V3: Adjusted indentation to resolve wrong indentation warning. Changed node name to converter. Updated the descriptions to clarify the properties. V1 -> V2: Removed '|' after description. Specified the pins connected to the GPIOs. Added additionalProperties: false. Changed node name to gpio. Aligned < syntax with the previous syntax in the examples. .../bindings/iio/frequency/adi,admfm2000.yaml | 129 ++++++++++++++++++ MAINTAINERS | 7 + 2 files changed, 136 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml diff --git a/Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml b/Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml new file mode 100644 index 000000000000..6f2c91c38666 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml @@ -0,0 +1,129 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2023 Analog Devices Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/frequency/adi,admfm2000.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ADMFM2000 Dual Microwave Down Converter + +maintainers: + - Kim Seer Paller + +description: + Dual microwave down converter module with input RF and LO frequency ranges + from 0.5 to 32 GHz and an output IF frequency range from 0.1 to 8 GHz. + It consists of a LNA, mixer, IF filter, DSA, and IF amplifier for each down + conversion path. + +properties: + compatible: + enum: + - adi,admfm2000 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +patternProperties: + "^channel@[0-1]$": + type: object + description: Represents a channel of the device. + + additionalProperties: false + + properties: + reg: + description: + The channel number. + minimum: 0 + maximum: 1 + + adi,mode: + description: + RF path selected for the channel. + 0 - Direct IF mode + 1 - Mixer mode + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + + switch-gpios: + description: | + GPIOs to select the RF path for the channel. + SW-CH1 CTRL-A CTRL-B + SW-CH2 CTRL-A CTRL-B CH1 Status CH2 Status + 1 0 Direct IF mode Mixer mode + 0 1 Mixer mode Direct IF mode + + items: + - description: SW-CH-CTRL-A GPIO + - description: SW-CH-CTRL-B GPIO + + attenuation-gpios: + description: | + Choice of attenuation: + DSA-V4 DSA-V3 DSA-V2 DSA-V1 DSA-V0 + 1 1 1 1 1 0 dB + 1 1 1 1 0 -1 dB + 1 1 1 0 1 -2 dB + 1 1 0 1 1 -4 dB + 1 0 1 1 1 -8 dB + 0 1 1 1 1 -16 dB + 0 0 0 0 0 -31 dB + + items: + - description: DSA-V0 GPIO + - description: DSA-V1 GPIO + - description: DSA-V2 GPIO + - description: DSA-V3 GPIO + - description: DSA-V4 GPIO + + required: + - reg + - adi,mode + - switch-gpios + - attenuation-gpios + +required: + - compatible + +additionalProperties: false + +examples: + - | + #include + converter { + compatible = "adi,admfm2000"; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + adi,mode = <1>; + switch-gpios = <&gpio 1 GPIO_ACTIVE_LOW>, + <&gpio 2 GPIO_ACTIVE_HIGH>; + + attenuation-gpios = <&gpio 17 GPIO_ACTIVE_LOW>, + <&gpio 22 GPIO_ACTIVE_LOW>, + <&gpio 23 GPIO_ACTIVE_LOW>, + <&gpio 24 GPIO_ACTIVE_LOW>, + <&gpio 25 GPIO_ACTIVE_LOW>; + }; + + channel@1 { + reg = <1>; + adi,mode = <1>; + switch-gpios = <&gpio 3 GPIO_ACTIVE_LOW>, + <&gpio 4 GPIO_ACTIVE_HIGH>; + + attenuation-gpios = <&gpio 0 GPIO_ACTIVE_LOW>, + <&gpio 5 GPIO_ACTIVE_LOW>, + <&gpio 6 GPIO_ACTIVE_LOW>, + <&gpio 16 GPIO_ACTIVE_LOW>, + <&gpio 26 GPIO_ACTIVE_LOW>; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index 2d94c72c3742..3a86f9d6cb98 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1260,6 +1260,13 @@ W: https://ez.analog.com/linux-software-drivers F: Documentation/devicetree/bindings/hwmon/adi,adm1177.yaml F: drivers/hwmon/adm1177.c +ANALOG DEVICES INC ADMFM2000 DRIVER +M: Kim Seer Paller +L: linux-iio@vger.kernel.org +S: Supported +W: https://ez.analog.com/linux-software-drivers +F: Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml + ANALOG DEVICES INC ADMV1013 DRIVER M: Antoniu Miclaus L: linux-iio@vger.kernel.org From patchwork Thu Jan 18 08:58:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kim Seer Paller X-Patchwork-Id: 13522597 Received: from mx0b-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) (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 C8D301F60B; Thu, 18 Jan 2024 08:59:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.135.77 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705568385; cv=none; b=GLx57FTSl0zOMg8uhqMeeu9A/Rptqo9yRVzBR5sAFxK7v0TZsD83yk0BgYUK91vhjDFZbj4w5QnDr99Rpf8qPwnKA21I+fJviIMGkSbOiX00TEkOi3u++3FBmsPlrrGlWJpKecb/oXWwWjqSeX3a5O7846oxfl36o+6aDwPNLG0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705568385; c=relaxed/simple; bh=Wnc2vLVgvh+f6D4g01DZsrNrW50DfkPwAg8oVF51w2k=; h=Received:Received:Received:Received:Received:Received:From:To:CC: Subject:Date:Message-ID:X-Mailer:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding:Content-Type: X-ADIRuleOP-NewSCL:X-Proofpoint-ORIG-GUID:X-Proofpoint-GUID: X-Proofpoint-Virus-Version:X-Proofpoint-Spam-Details; b=WwBUpfJAoEbHAeOkAqvfWtVd3E/L3CV4DeyPWu7feEb3u6TraXP/X6/NZuNmYmBx3heKz6+zxwDDAu6zOkfi3yqalovSy8VVaOJs7HY/Lzr3DU8yOkueC1hqJsb4YNzqMVERPykYI1mIm7Ie+WGQVX9wj+m5dcrq608HdRs8AtY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com; spf=pass smtp.mailfrom=analog.com; arc=none smtp.client-ip=148.163.135.77 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=analog.com Received: from pps.filterd (m0375855.ppops.net [127.0.0.1]) by mx0b-00128a01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40I6lTCD003257; Thu, 18 Jan 2024 03:59:28 -0500 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0b-00128a01.pphosted.com (PPS) with ESMTPS id 3vpy1fgfkg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Jan 2024 03:59:28 -0500 (EST) Received: from ASHBMBX8.ad.analog.com (ASHBMBX8.ad.analog.com [10.64.17.5]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 40I8xQG3001139 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 18 Jan 2024 03:59:26 -0500 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) by ASHBMBX8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Thu, 18 Jan 2024 03:59:25 -0500 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Thu, 18 Jan 2024 03:59:25 -0500 Received: from kim-VirtualBox.ad.analog.com (KPALLER2-L03.ad.analog.com [10.116.242.67]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 40I8x0RD005188; Thu, 18 Jan 2024 03:59:18 -0500 From: Kim Seer Paller To: , , CC: Jonathan Cameron , Lars-Peter Clausen , Michael Hennerich , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Crt Mori , Linus Walleij , Bartosz Golaszewski , Kim Seer Paller Subject: [PATCH v6 2/2] iio: frequency: admfm2000: New driver Date: Thu, 18 Jan 2024 16:58:56 +0800 Message-ID: <20240118085856.70758-3-kimseer.paller@analog.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240118085856.70758-1-kimseer.paller@analog.com> References: <20240118085856.70758-1-kimseer.paller@analog.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-ORIG-GUID: ZOuICzXcb8C1VPOnkuE7NSECsfBi3eaz X-Proofpoint-GUID: ZOuICzXcb8C1VPOnkuE7NSECsfBi3eaz X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-18_04,2024-01-17_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 phishscore=0 mlxlogscore=999 spamscore=0 mlxscore=0 priorityscore=1501 suspectscore=0 clxscore=1015 adultscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401180063 Dual microwave down converter module with input RF and LO frequency ranges from 0.5 to 32 GHz and an output IF frequency range from 0.1 to 8 GHz. It consists of a LNA, mixer, IF filter, DSA, and IF amplifier for each down conversion path. Signed-off-by: Kim Seer Paller --- V5 -> V6: Used devm_fwnode_gpiod_get_index for getting array of gpios. V4 -> V5: Added missing return -ENODEV in setup function. Reordered variable declarations in probe function. V1 -> V4: No changes. MAINTAINERS | 1 + drivers/iio/frequency/Kconfig | 10 + drivers/iio/frequency/Makefile | 1 + drivers/iio/frequency/admfm2000.c | 307 ++++++++++++++++++++++++++++++ 4 files changed, 319 insertions(+) create mode 100644 drivers/iio/frequency/admfm2000.c diff --git a/MAINTAINERS b/MAINTAINERS index 3a86f9d6cb98..49d320535105 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1266,6 +1266,7 @@ L: linux-iio@vger.kernel.org S: Supported W: https://ez.analog.com/linux-software-drivers F: Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml +F: drivers/iio/frequency/admfm2000.c ANALOG DEVICES INC ADMV1013 DRIVER M: Antoniu Miclaus diff --git a/drivers/iio/frequency/Kconfig b/drivers/iio/frequency/Kconfig index 9e85dfa58508..c455be7d4a1c 100644 --- a/drivers/iio/frequency/Kconfig +++ b/drivers/iio/frequency/Kconfig @@ -60,6 +60,16 @@ config ADF4377 To compile this driver as a module, choose M here: the module will be called adf4377. +config ADMFM2000 + tristate "Analog Devices ADMFM2000 Dual Microwave Down Converter" + depends on GPIOLIB + help + Say yes here to build support for Analog Devices ADMFM2000 Dual + Microwave Down Converter. + + To compile this driver as a module, choose M here: the + module will be called admfm2000. + config ADMV1013 tristate "Analog Devices ADMV1013 Microwave Upconverter" depends on SPI && COMMON_CLK diff --git a/drivers/iio/frequency/Makefile b/drivers/iio/frequency/Makefile index b616c29b4a08..70d0e0b70e80 100644 --- a/drivers/iio/frequency/Makefile +++ b/drivers/iio/frequency/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_AD9523) += ad9523.o obj-$(CONFIG_ADF4350) += adf4350.o obj-$(CONFIG_ADF4371) += adf4371.o obj-$(CONFIG_ADF4377) += adf4377.o +obj-$(CONFIG_ADMFM2000) += admfm2000.o obj-$(CONFIG_ADMV1013) += admv1013.o obj-$(CONFIG_ADMV1014) += admv1014.o obj-$(CONFIG_ADMV4420) += admv4420.o diff --git a/drivers/iio/frequency/admfm2000.c b/drivers/iio/frequency/admfm2000.c new file mode 100644 index 000000000000..a09ec38fad22 --- /dev/null +++ b/drivers/iio/frequency/admfm2000.c @@ -0,0 +1,307 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ADMFM2000 Dual Microwave Down Converter + * + * Copyright 2023 Analog Devices Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define ADMFM2000_MIXER_MODE 0 +#define ADMFM2000_DIRECT_IF_MODE 1 +#define ADMFM2000_DSA_GPIOS 5 +#define ADMFM2000_MODE_GPIOS 2 +#define ADMFM2000_MAX_GAIN 0 +#define ADMFM2000_MIN_GAIN -31000 +#define ADMFM2000_DEFAULT_GAIN -0x20 + +struct admfm2000_state { + struct mutex lock; /* protect sensor state */ + struct gpio_desc *sw1_ch[2]; + struct gpio_desc *sw2_ch[2]; + struct gpio_desc *dsa1_gpios[5]; + struct gpio_desc *dsa2_gpios[5]; + u32 gain[2]; +}; + +static int admfm2000_mode(struct iio_dev *indio_dev, u32 chan, u32 mode) +{ + struct admfm2000_state *st = iio_priv(indio_dev); + int i; + + switch (mode) { + case ADMFM2000_MIXER_MODE: + for (i = 0; i < ADMFM2000_MODE_GPIOS; i++) { + gpiod_set_value_cansleep(st->sw1_ch[i], (chan == 0) ? 1 : 0); + gpiod_set_value_cansleep(st->sw2_ch[i], (chan == 0) ? 0 : 1); + } + return 0; + case ADMFM2000_DIRECT_IF_MODE: + for (i = 0; i < ADMFM2000_MODE_GPIOS; i++) { + gpiod_set_value_cansleep(st->sw1_ch[i], (chan == 0) ? 0 : 1); + gpiod_set_value_cansleep(st->sw2_ch[i], (chan == 0) ? 1 : 0); + } + return 0; + default: + return -EINVAL; + } +} + +static int admfm2000_attenuation(struct iio_dev *indio_dev, u32 chan, u32 value) +{ + struct admfm2000_state *st = iio_priv(indio_dev); + int i; + + switch (chan) { + case 0: + for (i = 0; i < ADMFM2000_DSA_GPIOS; i++) + gpiod_set_value_cansleep(st->dsa1_gpios[i], value & (1 << i)); + return 0; + case 1: + for (i = 0; i < ADMFM2000_DSA_GPIOS; i++) + gpiod_set_value_cansleep(st->dsa2_gpios[i], value & (1 << i)); + return 0; + default: + return -EINVAL; + } +} + +static int admfm2000_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct admfm2000_state *st = iio_priv(indio_dev); + int gain; + + switch (mask) { + case IIO_CHAN_INFO_HARDWAREGAIN: + mutex_lock(&st->lock); + gain = ~(st->gain[chan->channel]) * -1000; + *val = gain / 1000; + *val2 = (gain % 1000) * 1000; + mutex_unlock(&st->lock); + + return IIO_VAL_INT_PLUS_MICRO_DB; + default: + return -EINVAL; + } +} + +static int admfm2000_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int val, + int val2, long mask) +{ + struct admfm2000_state *st = iio_priv(indio_dev); + int gain, ret; + + if (val < 0) + gain = (val * 1000) - (val2 / 1000); + else + gain = (val * 1000) + (val2 / 1000); + + if (gain > ADMFM2000_MAX_GAIN || gain < ADMFM2000_MIN_GAIN) + return -EINVAL; + + switch (mask) { + case IIO_CHAN_INFO_HARDWAREGAIN: + mutex_lock(&st->lock); + st->gain[chan->channel] = ~((abs(gain) / 1000) & 0x1F); + + ret = admfm2000_attenuation(indio_dev, chan->channel, + st->gain[chan->channel]); + mutex_unlock(&st->lock); + break; + default: + ret = -EINVAL; + } + + return ret; +} + +static int admfm2000_write_raw_get_fmt(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_HARDWAREGAIN: + return IIO_VAL_INT_PLUS_MICRO_DB; + default: + return -EINVAL; + } +} + +static const struct iio_info admfm2000_info = { + .read_raw = &admfm2000_read_raw, + .write_raw = &admfm2000_write_raw, + .write_raw_get_fmt = &admfm2000_write_raw_get_fmt, +}; + +#define ADMFM2000_CHAN(_channel) { \ + .type = IIO_VOLTAGE, \ + .output = 1, \ + .indexed = 1, \ + .channel = _channel, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_HARDWAREGAIN), \ +} + +static const struct iio_chan_spec admfm2000_channels[] = { + ADMFM2000_CHAN(0), + ADMFM2000_CHAN(1), +}; + +static int admfm2000_channel_config(struct admfm2000_state *st, + struct iio_dev *indio_dev) +{ + struct platform_device *pdev = to_platform_device(indio_dev->dev.parent); + struct device *dev = &pdev->dev; + struct fwnode_handle *child; + u32 reg, mode; + int ret, i; + + device_for_each_child_node(dev, child) { + ret = fwnode_property_read_u32(child, "reg", ®); + if (ret) { + fwnode_handle_put(child); + return dev_err_probe(dev, ret, + "Failed to get reg property\n"); + } + + if (reg >= indio_dev->num_channels) { + fwnode_handle_put(child); + return dev_err_probe(dev, -EINVAL, "reg bigger than: %d\n", + indio_dev->num_channels); + } + + ret = fwnode_property_read_u32(child, "adi,mode", &mode); + if (ret) { + fwnode_handle_put(child); + return dev_err_probe(dev, ret, + "Failed to get mode property\n"); + } + + if (mode >= 2) { + fwnode_handle_put(child); + return dev_err_probe(dev, -EINVAL, "mode bigger than: 1\n"); + } + + switch (reg) { + case 0: + for (i = 0; i < ADMFM2000_MODE_GPIOS; i++) { + st->sw1_ch[i] = devm_fwnode_gpiod_get_index(dev, child, + "switch", i, + GPIOD_OUT_LOW, + NULL); + if (IS_ERR(st->sw1_ch[i])) { + fwnode_handle_put(child); + return dev_err_probe(dev, PTR_ERR(st->sw1_ch[i]), + "Failed to get gpios\n"); + } + } + + for (i = 0; i < ADMFM2000_DSA_GPIOS; i++) { + st->dsa1_gpios[i] = devm_fwnode_gpiod_get_index(dev, child, + "attenuation", i, + GPIOD_OUT_LOW, + NULL); + if (IS_ERR(st->dsa1_gpios[i])) { + fwnode_handle_put(child); + return dev_err_probe(dev, PTR_ERR(st->dsa1_gpios[i]), + "Failed to get gpios\n"); + } + } + break; + case 1: + for (i = 0; i < ADMFM2000_MODE_GPIOS; i++) { + st->sw2_ch[i] = devm_fwnode_gpiod_get_index(dev, child, + "switch", i, + GPIOD_OUT_LOW, + NULL); + if (IS_ERR(st->sw2_ch[i])) { + fwnode_handle_put(child); + return dev_err_probe(dev, PTR_ERR(st->sw2_ch[i]), + "Failed to get gpios\n"); + } + } + + for (i = 0; i < ADMFM2000_DSA_GPIOS; i++) { + st->dsa2_gpios[i] = devm_fwnode_gpiod_get_index(dev, child, + "attenuation", i, + GPIOD_OUT_LOW, + NULL); + if (IS_ERR(st->dsa2_gpios[i])) { + fwnode_handle_put(child); + return dev_err_probe(dev, PTR_ERR(st->dsa2_gpios[i]), + "Failed to get gpios\n"); + } + } + break; + default: + return -EINVAL; + } + + ret = admfm2000_mode(indio_dev, reg, mode); + if (ret) { + fwnode_handle_put(child); + return ret; + } + } + + return 0; +} + +static int admfm2000_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct admfm2000_state *st; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*st)); + if (!indio_dev) + return -ENOMEM; + + st = iio_priv(indio_dev); + + indio_dev->name = "admfm2000"; + indio_dev->num_channels = ARRAY_SIZE(admfm2000_channels); + indio_dev->channels = admfm2000_channels; + indio_dev->info = &admfm2000_info; + indio_dev->modes = INDIO_DIRECT_MODE; + + st->gain[0] = ADMFM2000_DEFAULT_GAIN; + st->gain[1] = ADMFM2000_DEFAULT_GAIN; + + mutex_init(&st->lock); + + ret = admfm2000_channel_config(st, indio_dev); + if (ret) + return ret; + + return devm_iio_device_register(dev, indio_dev); +} + +static const struct of_device_id admfm2000_of_match[] = { + { .compatible = "adi,admfm2000" }, + { } +}; +MODULE_DEVICE_TABLE(of, admfm2000_of_match); + +static struct platform_driver admfm2000_driver = { + .driver = { + .name = "admfm2000", + .of_match_table = admfm2000_of_match, + }, + .probe = admfm2000_probe, +}; +module_platform_driver(admfm2000_driver); + +MODULE_AUTHOR("Kim Seer Paller "); +MODULE_DESCRIPTION("ADMFM2000 Dual Microwave Down Converter"); +MODULE_LICENSE("GPL");