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 8BB0A51120F; Wed, 16 Sep 2026 14:19:36 +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=1789568378; cv=none; b=sA3MuADFBE2truhCiWkV4QCc+HUca3fnZXJWSwi1K6mzTVlyYSdBBNVorljww6ktowHr+HeDRd+2bkb7OJzbImrJSkGjdu0RwzB9BwMivrfhQXYjFN2c39LDGf2ocQ5f9xbXJ6y/P9iwzGB9caBGQooywVAU7m84mr/r36wcNSY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789568378; c=relaxed/simple; bh=jtTe6xcWXWHv6CN3Fo47qR88PLKf+5Yr7GJSvJGIJtE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=ZQ6136yjsn/vFhk6xQTUZ7IqExDSR4HAVD3VOGsZ+CdhTCK9woy+WNcS5BhFGH4ID1mvgmY4iOOj2w6SL0iRycoguAj4hz5/agzY3CWp0UFlzQt1EAXEfrol9JIW2vYrx32WEqTWNwg4Rgb3cnDx8ZPJWqbSJ33micIWj9jpZDE= 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=iIGHKFRX; 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="iIGHKFRX" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1789568377; x=1821104377; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=jtTe6xcWXWHv6CN3Fo47qR88PLKf+5Yr7GJSvJGIJtE=; b=iIGHKFRXrTgfC7CuBWT6FZdsCO0zmQywRf6mYXgggKDSbxstjj4sorHJ FVFbfXhDWuY9cVlkG5Dp6Mq353NL4Qh0x7cl1KF4YEBTXWMxGEaXiXSKD nFU/9y0VE0K73WAlNI07BXXRQrkbdQV2KZgqP5EKrEv8zHDi4JcwktTiG SHBhaLeqH71t87z+rFazsQxzfOe9huuILOiwfPUUY7K5YDQagFVv1EJg6 SQ3a07GkiNFRgpLbdFhBf2sXOVSqOWbkliBHDUeMiAjaY58Huqx24+5IY nECP2LNLkqr+/qGNR8sLl52lC7V7ivf3NjCcJvi13DqI3eB6ZabFo4FjY g==; X-CSE-ConnectionGUID: iP8P1HvzS8KO9TYqKEpMVw== X-CSE-MsgGUID: tFu6HDNjTO6v1mDg5CKsoA== X-IronPort-AV: E=Sophos;i="6.27,103,1787036400"; d="scan'208";a="295112907" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 16 Sep 2026 07:19:35 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.58; Wed, 16 Sep 2026 07:19:30 -0700 Received: from [127.0.1.1] (10.10.85.11) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Wed, 16 Sep 2026 07:19:28 -0700 From: Ariana Lazar Date: Wed, 16 Sep 2026 17:16:37 +0300 Subject: [PATCH v6 11/11] 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: <20260916-mcp47feb02_refactor-v6-11-285464651f89@microchip.com> References: <20260916-mcp47feb02_refactor-v6-0-285464651f89@microchip.com> In-Reply-To: <20260916-mcp47feb02_refactor-v6-0-285464651f89@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=1789568335; l=10613; i=ariana.lazar@microchip.com; s=20250825; h=from:subject:message-id; bh=jtTe6xcWXWHv6CN3Fo47qR88PLKf+5Yr7GJSvJGIJtE=; b=lHkkH2nqzHrnNTlTPidJbY4hkoWoF70P4XyXmeBe/2kw5NLboVeG+tDvdZpqYaa9fx0f3XZ0g FqMKdGTt3VqA18v6rxQe+2SP29UswqlJO4e1LsIwK6TfEUoAC9RdU1h 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-spi.c | 145 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 169 insertions(+) diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig index c99c32b229fb683d6407f30682f7ea6104984421..3e37db1f772a2ccf9c872d7e128766f342e13d6f 100644 --- a/drivers/iio/dac/Kconfig +++ b/drivers/iio/dac/Kconfig @@ -618,6 +618,29 @@ 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 6377a9c42d983f615a0aa4d36a0c3d3639c62951..b665ff638cdc6e6e8ee32521c9c12a9e3d192eef 100644 --- a/drivers/iio/dac/Makefile +++ b/drivers/iio/dac/Makefile @@ -58,6 +58,7 @@ 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-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