From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (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 1486747F2DD; Thu, 24 Sep 2026 12:59:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.153.233 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790254786; cv=none; b=p5QmIvbSfcwAjCZ7M6NmRmjs9Hr3TgrTos7v7YCFI+iFEeMGZST7n918I+ofNqSrqdtHkU6UpKsy4mhHMnJkSV4U67HttwBXmRh3yCbGJwYKaAn2yBZEmzvSYxSQ1ifhr+Lk6fohAra43Dkwj5zaCpdIUJtaT5gatwAkkA8mdks= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790254786; c=relaxed/simple; bh=zFHyK11vjmn1B/boKtCmqPSbQGI/J8o+C9re7SgkhzI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=VsnFE6wy9hZn3+pJ7P96k0RRQICJYrZAd9ImPgY8LOuaa6oIElXW0Av8kngis45H/PWjY1xKWFMh9YXOG3+Ysc7/h20AsA4mLJh7JmqpdB93veeRhV1T75HrvYwbDmsemEq9NMk3x7GL7TOIHAjoH7dJaEW8/yc8+swgyFs05vg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=f4s1rH4z; arc=none smtp.client-ip=68.232.153.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="f4s1rH4z" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1790254784; x=1821790784; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=zFHyK11vjmn1B/boKtCmqPSbQGI/J8o+C9re7SgkhzI=; b=f4s1rH4zH4M3vZr4+rmJ/nP1CofD12H6ZYXKrOVOJOBZjIvaGG52U/8Z hqFhj3FszlebBx5c1uQn0YSfBAv1Xo6jkRflMDAqWb8QtNvyXj7fcvcwJ C18xRHscwUGI4ol7NLkEC5qhyH3ZXm5ZHq9meGMd+1MNzHOSA3zDxwzAc 1aDDUwT/BzcUOz+Eo+i7oz7GVu0CiL2DIopsgst9XRHuJsxarwc1dyh/2 mNjjSSt1Lu2H9P/zm9qZx11hw4PgsYdizTEQPO5V/MayMob+hjz001ZJa 1tdQLzNmKwLO8eUMOfWqivalrA/sQ4bIFknkdn8R0JkqiSwfj/bUbBgXv Q==; X-CSE-ConnectionGUID: 3drwJJ2cQWmseNhnV/erdQ== X-CSE-MsgGUID: 6oAOLRtpSy+o6p6qliw8pQ== X-IronPort-AV: E=Sophos;i="6.27,120,1787036400"; d="scan'208";a="64097086" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa3.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Sep 2026 05:59:42 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.87.71) by chn-vm-ex1.mchp-main.com (10.10.87.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.49; Thu, 24 Sep 2026 05:59:41 -0700 Received: from [127.0.1.1] (10.10.85.11) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Thu, 24 Sep 2026 05:59:38 -0700 From: Ariana Lazar Date: Thu, 24 Sep 2026 15:59:23 +0300 Subject: [PATCH v8 5/5] iio: dac: add support for Microchip MCP48FEB02 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-ID: <20260924-mcp47feb02_refactor-v8-5-17dc2ce3485e@microchip.com> References: <20260924-mcp47feb02_refactor-v8-0-17dc2ce3485e@microchip.com> In-Reply-To: <20260924-mcp47feb02_refactor-v8-0-17dc2ce3485e@microchip.com> To: Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , "Andy Shevchenko" , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley CC: , , , Ariana Lazar , Jonathan Cameron X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1790254762; l=11356; i=ariana.lazar@microchip.com; s=20250825; h=from:subject:message-id; bh=zFHyK11vjmn1B/boKtCmqPSbQGI/J8o+C9re7SgkhzI=; b=z5UIwaRZHtvnAkXkH8MDnCl84y+5FvbDDwHBbMcSVMtbiIek1uTi1Cy+IUkG08I8LmgVhMiuv Ftk7J1ns2V0AlvI40XYqj5DKyFqTkdcVpIBiTvbB2l4zwvzumImcKG5 X-Developer-Key: i=ariana.lazar@microchip.com; a=ed25519; pk=jmvf1fSxcnzZmXfITM3L94IwutM+wqA1POQHiYyD6Dk= This is the IIO driver for Microchip MCP48FxBy1/2/4/8 series of buffered voltage output Digital-to-Analog Converters with nonvolatile or volatile memory and an SPI Interface. The families support up to 8 output channels. The devices can be 8-bit, 10-bit and 12-bit. Signed-off-by: Ariana Lazar --- drivers/iio/dac/Kconfig | 23 ++++++ drivers/iio/dac/Makefile | 1 + drivers/iio/dac/mcp47feb02-core.c | 2 +- drivers/iio/dac/mcp47feb02-spi.c | 145 ++++++++++++++++++++++++++++++++++++++ 4 files changed, 170 insertions(+), 1 deletion(-) diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig index 8121a71945f63a23b35fcab010fda1d03d0afba0..e373885e7c7a13129f39fb8617763c8c2bf3ae74 100644 --- a/drivers/iio/dac/Kconfig +++ b/drivers/iio/dac/Kconfig @@ -636,6 +636,29 @@ config MCP47FEB02_I2C will be called mcp47feb02_i2c and you will also get mcp47feb02_core for the core module. +config MCP47FEB02_SPI + tristate "MCP48F(E/V)B01/02/04/08/11/12/14/18/21/22/24/28 SPI DAC driver" + depends on SPI + select REGMAP_SPI + select MCP47FEB02 + help + Say yes here if you want to build the driver for the Microchip: + - 8-bit DAC: + MCP48FEB01, MCP48FEB02, MCP48FEB04, MCP48FEB08, + MCP48FVB01, MCP48FVB02, MCP48FVB04, MCP48FVB08 + - 10-bit DAC: + MCP48FEB11, MCP48FEB12, MCP48FEB14, MCP48FEB18, + MCP48FVB11, MCP48FVB12, MCP48FVB14, MCP48FVB18 + - 12-bit DAC: + MCP48FEB21, MCP48FEB22, MCP48FEB24, MCP48FEB28, + MCP48FVB21, MCP48FVB22, MCP48FVB24, MCP48FVB28 + having 1 to 8 channels, 8/10/12-bit digital-to-analog converter + (DAC) with SPI interface. + + To compile this driver as a module, choose M here: the module + will be called mcp47feb02_spi and you will also get + mcp47feb02_core for the core module. + config MCP4821 tristate "MCP4801/02/11/12/21/22 DAC driver" depends on SPI diff --git a/drivers/iio/dac/Makefile b/drivers/iio/dac/Makefile index 4394278d9fd874b94ae2d680378fb3b043ac8672..2cd0fe23db9e60245cbe515a99c5eaff60db3c6c 100644 --- a/drivers/iio/dac/Makefile +++ b/drivers/iio/dac/Makefile @@ -59,6 +59,7 @@ obj-$(CONFIG_MCP4728) += mcp4728.o obj-$(CONFIG_MCP47A1) += mcp47a1.o obj-$(CONFIG_MCP47FEB02) += mcp47feb02-core.o obj-$(CONFIG_MCP47FEB02_I2C) += mcp47feb02-i2c.o +obj-$(CONFIG_MCP47FEB02_SPI) += mcp47feb02-spi.o obj-$(CONFIG_MCP4821) += mcp4821.o obj-$(CONFIG_MCP4922) += mcp4922.o obj-$(CONFIG_STM32_DAC_CORE) += stm32-dac-core.o diff --git a/drivers/iio/dac/mcp47feb02-core.c b/drivers/iio/dac/mcp47feb02-core.c index 29d69cb2f68b5d7c6a615481bb1045aed468e9cf..06063d77739582faad3010202390aead1d5a0aa1 100644 --- a/drivers/iio/dac/mcp47feb02-core.c +++ b/drivers/iio/dac/mcp47feb02-core.c @@ -980,5 +980,5 @@ int mcp47feb02_common_probe(const struct mcp47feb02_features *chip_features, EXPORT_SYMBOL_NS(mcp47feb02_common_probe, "IIO_MCP47FEB02"); MODULE_AUTHOR("Ariana Lazar "); -MODULE_DESCRIPTION("IIO driver for MCP47FEB02 Multi-Channel DAC with I2C interface"); +MODULE_DESCRIPTION("IIO driver for MCP47FEB02/MCP48FEB02 Multi-Channel DAC"); MODULE_LICENSE("GPL"); diff --git a/drivers/iio/dac/mcp47feb02-spi.c b/drivers/iio/dac/mcp47feb02-spi.c new file mode 100644 index 0000000000000000000000000000000000000000..974f8fe1b86e939e99e6b2a7d3d05f025a73aa67 --- /dev/null +++ b/drivers/iio/dac/mcp47feb02-spi.c @@ -0,0 +1,145 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * IIO driver for MCP48FEB02 Multi-Channel DAC with SPI interface + * + * Copyright (C) 2025-2026 Microchip Technology Inc. and its subsidiaries + * + * Author: Ariana Lazar + * + * Datasheet links for devices with SPI interface: + * [MCP48FEBxx] https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005429B.pdf + * [MCP48FVBxx] https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005466A.pdf + * [MCP48FxBx4/8] https://ww1.microchip.com/downloads/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/MCP48FXBX4-8-Family-Data-Sheet-DS20006362A.pdf + */ +#include +#include +#include +#include +#include +#include +#include + +#include "mcp47feb02.h" + +/* Parts with EEPROM memory */ +MCP47FEB02_CHIP_INFO(mcp48feb01, 1, 8, false, true); +MCP47FEB02_CHIP_INFO(mcp48feb02, 2, 8, false, true); +MCP47FEB02_CHIP_INFO(mcp48feb04, 4, 8, true, true); +MCP47FEB02_CHIP_INFO(mcp48feb08, 8, 8, true, true); +MCP47FEB02_CHIP_INFO(mcp48feb11, 1, 10, false, true); +MCP47FEB02_CHIP_INFO(mcp48feb12, 2, 10, false, true); +MCP47FEB02_CHIP_INFO(mcp48feb14, 4, 10, true, true); +MCP47FEB02_CHIP_INFO(mcp48feb18, 8, 10, true, true); +MCP47FEB02_CHIP_INFO(mcp48feb21, 1, 12, false, true); +MCP47FEB02_CHIP_INFO(mcp48feb22, 2, 12, false, true); +MCP47FEB02_CHIP_INFO(mcp48feb24, 4, 12, true, true); +MCP47FEB02_CHIP_INFO(mcp48feb28, 8, 12, true, true); + +/* Parts without EEPROM memory */ +MCP47FEB02_CHIP_INFO(mcp48fvb01, 1, 8, false, false); +MCP47FEB02_CHIP_INFO(mcp48fvb02, 2, 8, false, false); +MCP47FEB02_CHIP_INFO(mcp48fvb04, 4, 8, true, false); +MCP47FEB02_CHIP_INFO(mcp48fvb08, 8, 8, true, false); +MCP47FEB02_CHIP_INFO(mcp48fvb11, 1, 10, false, false); +MCP47FEB02_CHIP_INFO(mcp48fvb12, 2, 10, false, false); +MCP47FEB02_CHIP_INFO(mcp48fvb14, 4, 10, true, false); +MCP47FEB02_CHIP_INFO(mcp48fvb18, 8, 10, true, false); +MCP47FEB02_CHIP_INFO(mcp48fvb21, 1, 12, false, false); +MCP47FEB02_CHIP_INFO(mcp48fvb22, 2, 12, false, false); +MCP47FEB02_CHIP_INFO(mcp48fvb24, 4, 12, true, false); +MCP47FEB02_CHIP_INFO(mcp48fvb28, 8, 12, true, false); + +static int mcp47feb02_spi_probe(struct spi_device *spi) +{ + const struct mcp47feb02_features *chip_features; + struct device *dev = &spi->dev; + struct regmap *regmap; + + chip_features = spi_get_device_match_data(spi); + if (!chip_features) + return dev_err_probe(dev, -ENODATA, "No match data found\n"); + + if (chip_features->have_eeprom) + regmap = devm_regmap_init_spi(spi, &mcp47feb02_regmap_config); + else + regmap = devm_regmap_init_spi(spi, &mcp47fvb02_regmap_config); + + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), "Error initializing SPI regmap\n"); + + return mcp47feb02_common_probe(chip_features, regmap); +} + +static const struct spi_device_id mcp47feb02_spi_id[] = { + { .name = "mcp48feb01", .driver_data = (kernel_ulong_t)&mcp48feb01_chip_features }, + { .name = "mcp48feb02", .driver_data = (kernel_ulong_t)&mcp48feb02_chip_features }, + { .name = "mcp48feb04", .driver_data = (kernel_ulong_t)&mcp48feb04_chip_features }, + { .name = "mcp48feb08", .driver_data = (kernel_ulong_t)&mcp48feb08_chip_features }, + { .name = "mcp48feb11", .driver_data = (kernel_ulong_t)&mcp48feb11_chip_features }, + { .name = "mcp48feb12", .driver_data = (kernel_ulong_t)&mcp48feb12_chip_features }, + { .name = "mcp48feb14", .driver_data = (kernel_ulong_t)&mcp48feb14_chip_features }, + { .name = "mcp48feb18", .driver_data = (kernel_ulong_t)&mcp48feb18_chip_features }, + { .name = "mcp48feb21", .driver_data = (kernel_ulong_t)&mcp48feb21_chip_features }, + { .name = "mcp48feb22", .driver_data = (kernel_ulong_t)&mcp48feb22_chip_features }, + { .name = "mcp48feb24", .driver_data = (kernel_ulong_t)&mcp48feb24_chip_features }, + { .name = "mcp48feb28", .driver_data = (kernel_ulong_t)&mcp48feb28_chip_features }, + { .name = "mcp48fvb01", .driver_data = (kernel_ulong_t)&mcp48fvb01_chip_features }, + { .name = "mcp48fvb02", .driver_data = (kernel_ulong_t)&mcp48fvb02_chip_features }, + { .name = "mcp48fvb04", .driver_data = (kernel_ulong_t)&mcp48fvb04_chip_features }, + { .name = "mcp48fvb08", .driver_data = (kernel_ulong_t)&mcp48fvb08_chip_features }, + { .name = "mcp48fvb11", .driver_data = (kernel_ulong_t)&mcp48fvb11_chip_features }, + { .name = "mcp48fvb12", .driver_data = (kernel_ulong_t)&mcp48fvb12_chip_features }, + { .name = "mcp48fvb14", .driver_data = (kernel_ulong_t)&mcp48fvb14_chip_features }, + { .name = "mcp48fvb18", .driver_data = (kernel_ulong_t)&mcp48fvb18_chip_features }, + { .name = "mcp48fvb21", .driver_data = (kernel_ulong_t)&mcp48fvb21_chip_features }, + { .name = "mcp48fvb22", .driver_data = (kernel_ulong_t)&mcp48fvb22_chip_features }, + { .name = "mcp48fvb24", .driver_data = (kernel_ulong_t)&mcp48fvb24_chip_features }, + { .name = "mcp48fvb28", .driver_data = (kernel_ulong_t)&mcp48fvb28_chip_features }, + { } +}; +MODULE_DEVICE_TABLE(spi, mcp47feb02_spi_id); + +static const struct of_device_id mcp47feb02_of_spi_match[] = { + { .compatible = "microchip,mcp48feb01", .data = &mcp48feb01_chip_features }, + { .compatible = "microchip,mcp48feb02", .data = &mcp48feb02_chip_features }, + { .compatible = "microchip,mcp48feb04", .data = &mcp48feb04_chip_features }, + { .compatible = "microchip,mcp48feb08", .data = &mcp48feb08_chip_features }, + { .compatible = "microchip,mcp48feb11", .data = &mcp48feb11_chip_features }, + { .compatible = "microchip,mcp48feb12", .data = &mcp48feb12_chip_features }, + { .compatible = "microchip,mcp48feb14", .data = &mcp48feb14_chip_features }, + { .compatible = "microchip,mcp48feb18", .data = &mcp48feb18_chip_features }, + { .compatible = "microchip,mcp48feb21", .data = &mcp48feb21_chip_features }, + { .compatible = "microchip,mcp48feb22", .data = &mcp48feb22_chip_features }, + { .compatible = "microchip,mcp48feb24", .data = &mcp48feb24_chip_features }, + { .compatible = "microchip,mcp48feb28", .data = &mcp48feb28_chip_features }, + { .compatible = "microchip,mcp48fvb01", .data = &mcp48fvb01_chip_features }, + { .compatible = "microchip,mcp48fvb02", .data = &mcp48fvb02_chip_features }, + { .compatible = "microchip,mcp48fvb04", .data = &mcp48fvb04_chip_features }, + { .compatible = "microchip,mcp48fvb08", .data = &mcp48fvb08_chip_features }, + { .compatible = "microchip,mcp48fvb11", .data = &mcp48fvb11_chip_features }, + { .compatible = "microchip,mcp48fvb12", .data = &mcp48fvb12_chip_features }, + { .compatible = "microchip,mcp48fvb14", .data = &mcp48fvb14_chip_features }, + { .compatible = "microchip,mcp48fvb18", .data = &mcp48fvb18_chip_features }, + { .compatible = "microchip,mcp48fvb21", .data = &mcp48fvb21_chip_features }, + { .compatible = "microchip,mcp48fvb22", .data = &mcp48fvb22_chip_features }, + { .compatible = "microchip,mcp48fvb24", .data = &mcp48fvb24_chip_features }, + { .compatible = "microchip,mcp48fvb28", .data = &mcp48fvb28_chip_features }, + { } +}; +MODULE_DEVICE_TABLE(of, mcp47feb02_of_spi_match); + +static struct spi_driver mcp47feb02_spi_driver = { + .driver = { + .name = "mcp47feb02", + .of_match_table = mcp47feb02_of_spi_match, + .pm = pm_sleep_ptr(&mcp47feb02_pm_ops), + }, + .probe = mcp47feb02_spi_probe, + .id_table = mcp47feb02_spi_id, +}; +module_spi_driver(mcp47feb02_spi_driver); + +MODULE_AUTHOR("Ariana Lazar "); +MODULE_DESCRIPTION("IIO driver for MCP48FEB02 Multi-Channel DAC with SPI interface"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("IIO_MCP47FEB02"); -- 2.43.0