From patchwork Thu Apr 20 12:13:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 85887 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp295243vqo; Thu, 20 Apr 2023 05:28:58 -0700 (PDT) X-Google-Smtp-Source: AKy350a4bPD5eqjR7BRgrOfOJ6ibStX1FG9I2dU4ltJ+jlvN1KF7fNGYAUJgsfALtUZw0AcpqMn1 X-Received: by 2002:a05:6a00:2d11:b0:63d:2d99:2e92 with SMTP id fa17-20020a056a002d1100b0063d2d992e92mr1509208pfb.17.1681993738409; Thu, 20 Apr 2023 05:28:58 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1681993738; cv=none; d=google.com; s=arc-20160816; b=DHVwwU7DYImd6wrogQZofAyS7ZMnVI7RpoQJn8WFTR2stuHngFWlv2Ri9OnfeBIIQm YzmLMlN8hZKZF3joQirMZgU2e/HGdga8lz2j2xGtgUiOojFO3Jb5/Y5q5GNa2A1Y6Rpj Dzk4crBqFMU/hs+8gzoBktN/SVUlXra0MskkRFAFq/O9J17y3fJsovvxv7BKlv9kwqGE +ZDOtuzp8akYG+vFhm392mAWe9ePYPSaZlZBpouVqe9piOAF4btJSECdx/Ll1XvAnuai Z1SlL+Z9/XVGqtHG6Tqt4Dma3Kjx7msypj2JGnwochr8ZZhduUYsMz/B8Koe/pEswTkH u9Ug== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=ZpadVS75bKUorNR3CkEw5c26Pn7J32Ucphbz5XTTYA0=; b=TLYGt8CrxHJeiOCh/zRvOUAaw4eeh3kZoAIKnZJ9d8XEJMjLHfRt+7tGnk0a5AnHl3 ZvMW/3qzZG+RYQU+9zmqIZlsQPHPuolm69ftvG2cjKiReW/4H5r6eBizY/PvX714V18C azr79n5FIuKTC8RsJvUITVJ6YYT5Gbve4KODJYvG7fWR5gnmfDORvQpFsZd7R20c7GCb av2F2YFJG1c2rqlt+cYAGzBZQK7KyASvCtnlQA7VQ0ULGqKT05znALbn9YgOQAmgj6ww WEOTRNjE1KFxrSuzThFf1b8ctE4clKux35Om2hPhRMbvjJ+1pZDvQTHvfS/6BaZSc34p FWNA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@bootlin.com header.s=gm1 header.b=UbnQpGtr; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=bootlin.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id 135-20020a63048d000000b005183e6198aasi1410063pge.794.2023.04.20.05.28.44; Thu, 20 Apr 2023 05:28:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@bootlin.com header.s=gm1 header.b=UbnQpGtr; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=bootlin.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234284AbjDTMOQ (ORCPT + 99 others); Thu, 20 Apr 2023 08:14:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37028 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234727AbjDTMON (ORCPT ); Thu, 20 Apr 2023 08:14:13 -0400 Received: from relay11.mail.gandi.net (relay11.mail.gandi.net [217.70.178.231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 491304220; Thu, 20 Apr 2023 05:13:53 -0700 (PDT) Received: (Authenticated sender: herve.codina@bootlin.com) by mail.gandi.net (Postfix) with ESMTPA id 0D186100017; Thu, 20 Apr 2023 12:13:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1681992832; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZpadVS75bKUorNR3CkEw5c26Pn7J32Ucphbz5XTTYA0=; b=UbnQpGtrFTRYoGAIfLrKkWXlSXNNAry98WzKY7yn4oNMBcgaNtN6JWsCQdGoX6fbgW9mSN dkboKLGRm+aTvwU1ybXSE3YBN7AdO3Ie4oKhZ61HcxHfVdgFc6qL6CjIK5L0ouBxQ5FqGy 4wohe025EYj8BMioXcKmAJU+hVLI2bEm3vnGIPLdS3jEJv2MQQJQIBdrhNRLyW/43QoZ4q mbLWuef9daZd+WcnYpUwcjXmwandI90YS8RrMgr1f5PdYyVGhnvqyH8cct9v71sLXU1vGa Ta05EG8kGH6L+t3tlkbA4eLQ5U1MRkTn+B+BZCZ4SfQJIHA5gP4u2kOTRuOdBA== From: Herve Codina To: Herve Codina , Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Krzysztof Kozlowski Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Christophe Leroy , Thomas Petazzoni Subject: [PATCH 1/3] dt-bindings: iio: potentiometer: Add the Renesas X9250 potentiometers Date: Thu, 20 Apr 2023 14:13:18 +0200 Message-Id: <20230420121320.252884-2-herve.codina@bootlin.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230420121320.252884-1-herve.codina@bootlin.com> References: <20230420121320.252884-1-herve.codina@bootlin.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1763698266273189433?= X-GMAIL-MSGID: =?utf-8?q?1763698266273189433?= The Renesas X9250 is a quad digitally controlled potentiometers. Signed-off-by: Herve Codina --- .../iio/potentiometer/renesas,x9250.yaml | 56 +++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml diff --git a/Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml b/Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml new file mode 100644 index 000000000000..e0433cd522aa --- /dev/null +++ b/Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/potentiometer/renesas,x9250.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas X9250 quad potentiometers + +maintainers: + - Herve Codina + +description: + The Renesas X9250 integrates four digitally controlled potentiometers. + On each potentiometer, the X9250T has a 100 kOhms total resistance and the + X9250U has a 50 kOhms total resistance. + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml + - $ref: /schemas/iio/iio.yaml + +properties: + compatible: + enum: + - renesas,x9250t + - renesas,x9250u + + reg: + description: + SPI device address. + maxItems: 1 + + '#io-channel-cells': + const: 1 + + spi-max-frequency: + maximum: 2000000 + +required: + - compatible + - reg + - '#io-channel-cells' + +unevaluatedProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + x9250@0 { + compatible = "renesas,x9250t"; + reg = <0>; + spi-max-frequency = <2000000>; + #io-channel-cells = <1>; + }; + }; From patchwork Thu Apr 20 12:13:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 85890 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp298411vqo; Thu, 20 Apr 2023 05:33:32 -0700 (PDT) X-Google-Smtp-Source: AKy350YoHhxvYoTFDpttImBKVXky0DybJUUPQuE7VmLlk9PmLUMNjGRJNid7M0Eap/IJmOG0hp0W X-Received: by 2002:a17:90b:238f:b0:246:c223:14ab with SMTP id mr15-20020a17090b238f00b00246c22314abmr1388009pjb.41.1681994012553; Thu, 20 Apr 2023 05:33:32 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1681994012; cv=none; d=google.com; s=arc-20160816; b=PX6eq7yA1arIo6IGvu5DMA18GFr0YIDxOlrvJ7KoofMNYKzPkZJ6QDj4eqCWc7Lpek fqFsFBAGPYE5IDIcoLK/Pop7IWY2m+pkiZtTdxUSUtAw/3lAfZAR7dE4Ke5BtENXSPxf Iya+mAQxnpuA+RCH60iv7dPzBeofVKu0MttiTgz1PDxfJec8vyho7XMruJCnFZSZGnyX zX3xhieWIFxbnKC+TTqe3TQjfB2OB8c/MUokaPJId+MvQ4bRTJCItIabp6k+4hWKcivy 1pg4yB+j34rmZNy+vL1WyEw7Sid/IrC2XXjR0w6C2J0tvJ4ySJ7e8Y+Xze36LnEDwAx2 Gg3g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=jNUNRSObWoEgsv11p7n+1Ndq/LND8+YwprENk7DCiw8=; b=kVKqzwdkINbNoXB132z+fX6tjLz9sFLXgy84RG5IiQEIHjYy3hnoU34AOWOS/Lz1FS lopy3fVeeVE6+vUdTaiwMXMbu105wjPOiC6einwQc7QUiFlTe5ThsdOgZCz3rZhmf3me haDN7t/tLBZk1n0Fq+/lPfaWSg+VxnMY8JMCBcLA6FeKw5wD0ixMawwqNnezZVrY8Ybf Zo4LrWbpAKdZ1E9snuLg+kIpL5iN3etPbzLQEjrNIBJv3d2js19lX0bGvCgw+fuBRab/ +lan2fTyilK/gtO1w9ysNqxu1VxyMPrf2zjYHPIIA9HLu4QhTgZ87x+x3Rj5KDMvcGvc 2+tw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@bootlin.com header.s=gm1 header.b=Qc9pwbfc; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=bootlin.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id pf2-20020a17090b1d8200b0024704bddfafsi1971083pjb.59.2023.04.20.05.33.19; Thu, 20 Apr 2023 05:33:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@bootlin.com header.s=gm1 header.b=Qc9pwbfc; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=bootlin.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234788AbjDTMOT (ORCPT + 99 others); Thu, 20 Apr 2023 08:14:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37138 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234746AbjDTMOR (ORCPT ); Thu, 20 Apr 2023 08:14:17 -0400 Received: from relay11.mail.gandi.net (relay11.mail.gandi.net [217.70.178.231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE56B5258; Thu, 20 Apr 2023 05:13:56 -0700 (PDT) Received: (Authenticated sender: herve.codina@bootlin.com) by mail.gandi.net (Postfix) with ESMTPA id 27D2E100011; Thu, 20 Apr 2023 12:13:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1681992835; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jNUNRSObWoEgsv11p7n+1Ndq/LND8+YwprENk7DCiw8=; b=Qc9pwbfc0PiPK0obo/5P+jnMVXvp/bQtdao47csZ7N7s/UPajAQAWVvfBZCdcsQqFL5/p4 MOZ1kyPBzdwJ/eaVzCtESlDeh9p3kB+Dv5bnRiQsrcLe3uontxPOVEtfn3W1P/lE2rYQJq PwVqSuHqTEub52Sw2QaRiififAdjd7dbqjLz5wG4ozBYIymIgX/nTnIYp/fL7BsICKgaor yMGmjuz9U3Ql/VAFllJ3dTSdsZp+4tfgThdilsYZbPKuTLdnDG1CCCLERQrm1n7jGhooYu 4X0eP6rWO8DZPwcEWwL2w3iAKe0itADkbf4cJX5zpP2zUYL3orsDIgp6c40kUQ== From: Herve Codina To: Herve Codina , Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Krzysztof Kozlowski Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Christophe Leroy , Thomas Petazzoni Subject: [PATCH 2/3] iio: potentiometer: Add support for the Renesas X9250 potentiometers Date: Thu, 20 Apr 2023 14:13:19 +0200 Message-Id: <20230420121320.252884-3-herve.codina@bootlin.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230420121320.252884-1-herve.codina@bootlin.com> References: <20230420121320.252884-1-herve.codina@bootlin.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1763698553748419351?= X-GMAIL-MSGID: =?utf-8?q?1763698553748419351?= The Renesas X9250 integrates four digitally controlled potentiometers. On each potentiometer, the X9250T has a 100 kOhms total resistance and the X9250U has a 50 kOhms total resistance. Signed-off-by: Herve Codina --- drivers/iio/potentiometer/Kconfig | 10 ++ drivers/iio/potentiometer/Makefile | 1 + drivers/iio/potentiometer/x9250.c | 233 +++++++++++++++++++++++++++++ 3 files changed, 244 insertions(+) create mode 100644 drivers/iio/potentiometer/x9250.c diff --git a/drivers/iio/potentiometer/Kconfig b/drivers/iio/potentiometer/Kconfig index 01dd3f858d99..e6a9a3c67845 100644 --- a/drivers/iio/potentiometer/Kconfig +++ b/drivers/iio/potentiometer/Kconfig @@ -136,4 +136,14 @@ config TPL0102 To compile this driver as a module, choose M here: the module will be called tpl0102. +config X9250 + tristate "Renesas X9250 quad controlled potentiometers" + depends on SPI + help + Enable support for the Renesas X9250 quad controlled + potentiometers. + + To compile this driver as a module, choose M here: the module + will be called x9250. + endmenu diff --git a/drivers/iio/potentiometer/Makefile b/drivers/iio/potentiometer/Makefile index 5ebb8e3bbd76..d11fb739176c 100644 --- a/drivers/iio/potentiometer/Makefile +++ b/drivers/iio/potentiometer/Makefile @@ -15,3 +15,4 @@ obj-$(CONFIG_MCP4131) += mcp4131.o obj-$(CONFIG_MCP4531) += mcp4531.o obj-$(CONFIG_MCP41010) += mcp41010.o obj-$(CONFIG_TPL0102) += tpl0102.o +obj-$(CONFIG_X9250) += x9250.o diff --git a/drivers/iio/potentiometer/x9250.c b/drivers/iio/potentiometer/x9250.c new file mode 100644 index 000000000000..9d3831f36054 --- /dev/null +++ b/drivers/iio/potentiometer/x9250.c @@ -0,0 +1,233 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * + * x9250.c -- Renesas X9250 potentiometers IIO driver + * + * Copyright 2023 CS GROUP France + * + * Author: Herve Codina + */ + +#include +#include +#include +#include +#include + +struct x9250_cfg { + int kohms; +}; + +struct x9250 { + struct spi_device *spi; + const struct x9250_cfg *cfg; + struct mutex lock; /* Protect tx and rx buffers */ + /* Cannot use stack area for SPI (dma-safe memory) */ + u8 spi_tx_buf[3] __aligned(IIO_DMA_MINALIGN); + u8 spi_rx_buf[3] __aligned(IIO_DMA_MINALIGN); +}; + +#define X9250_CMD_RD_WCR(_p) (0x90 | (_p)) +#define X9250_CMD_WR_WCR(_p) (0xa0 | (_p)) + +static int x9250_write8(struct x9250 *x9250, u8 cmd, u8 val) +{ + struct spi_transfer xfer = { + .tx_buf = &x9250->spi_tx_buf, + .len = 3, + }; + int ret; + + BUILD_BUG_ON(sizeof(x9250->spi_tx_buf) < 3); + + mutex_lock(&x9250->lock); + + x9250->spi_tx_buf[0] = 0x50; + x9250->spi_tx_buf[1] = cmd; + x9250->spi_tx_buf[2] = val; + + ret = spi_sync_transfer(x9250->spi, &xfer, 1); + + mutex_unlock(&x9250->lock); + + return ret; +} + +static int x9250_read8(struct x9250 *x9250, u8 cmd, u8 *val) +{ + struct spi_transfer xfer = { + .tx_buf = &x9250->spi_tx_buf, + .rx_buf = &x9250->spi_rx_buf, + .len = 3, + }; + int ret; + + BUILD_BUG_ON(sizeof(x9250->spi_tx_buf) < 3); + BUILD_BUG_ON(sizeof(x9250->spi_rx_buf) < 3); + + mutex_lock(&x9250->lock); + + x9250->spi_tx_buf[0] = 0x50; + x9250->spi_tx_buf[1] = cmd; + + ret = spi_sync_transfer(x9250->spi, &xfer, 1); + if (ret) + goto end; + + *val = x9250->spi_rx_buf[2]; + ret = 0; +end: + mutex_unlock(&x9250->lock); + return ret; +} + +#define X9250_CHANNEL(ch) { \ + .type = IIO_RESISTANCE, \ + .indexed = 1, \ + .output = 1, \ + .channel = (ch), \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_RAW), \ +} + +static const struct iio_chan_spec x9250_channels[] = { + X9250_CHANNEL(0), + X9250_CHANNEL(1), + X9250_CHANNEL(2), + X9250_CHANNEL(3), +}; + +static int x9250_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct x9250 *x9250 = iio_priv(indio_dev); + int ch = chan->channel; + int ret; + u8 v; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = x9250_read8(x9250, X9250_CMD_RD_WCR(ch), &v); + if (ret) + return ret; + *val = v; + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SCALE: + *val = 1000 * x9250->cfg->kohms; + *val2 = U8_MAX; + return IIO_VAL_FRACTIONAL; + } + + return -EINVAL; +} + +static int x9250_read_avail(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, + const int **vals, int *type, int *length, long mask) +{ + static const int range[] = {0, 1, 255}; /* min, step, max */ + + switch (mask) { + case IIO_CHAN_INFO_RAW: + *length = ARRAY_SIZE(range); + *vals = range; + *type = IIO_VAL_INT; + return IIO_AVAIL_RANGE; + } + + return -EINVAL; +} + +static int x9250_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct x9250 *x9250 = iio_priv(indio_dev); + int ch = chan->channel; + + if (mask != IIO_CHAN_INFO_RAW) + return -EINVAL; + + if (val > U8_MAX || val < 0) + return -EINVAL; + + return x9250_write8(x9250, X9250_CMD_WR_WCR(ch), val); +} + +static const struct iio_info x9250_info = { + .read_raw = x9250_read_raw, + .read_avail = x9250_read_avail, + .write_raw = x9250_write_raw, +}; + +enum x9250_type { + X9250T, + X9250U, +}; + +static const struct x9250_cfg x9250_cfg[] = { + [X9250T] = { .kohms = 100, }, + [X9250U] = { .kohms = 50, }, +}; + +static int x9250_probe(struct spi_device *spi) +{ + struct iio_dev *indio_dev; + struct x9250 *x9250; + int ret; + + spi->bits_per_word = 8; + ret = spi_setup(spi); + if (ret < 0) + return ret; + + indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*x9250)); + if (!indio_dev) + return -ENOMEM; + + x9250 = iio_priv(indio_dev); + x9250->spi = spi; + x9250->cfg = device_get_match_data(&spi->dev); + if (!x9250->cfg) + x9250->cfg = &x9250_cfg[spi_get_device_id(spi)->driver_data]; + + mutex_init(&x9250->lock); + + indio_dev->info = &x9250_info; + indio_dev->channels = x9250_channels; + indio_dev->num_channels = ARRAY_SIZE(x9250_channels); + indio_dev->name = spi_get_device_id(spi)->name; + + spi_set_drvdata(spi, indio_dev); + + return devm_iio_device_register(&spi->dev, indio_dev); +} + +static const struct of_device_id x9250_of_match[] = { + { .compatible = "renesas,x9250t", &x9250_cfg[X9250T]}, + { .compatible = "renesas,x9250u", &x9250_cfg[X9250U]}, + { } +}; +MODULE_DEVICE_TABLE(of, x9250_of_match); + +static const struct spi_device_id x9250_id_table[] = { + { "x9250t", X9250T }, + { "x9250u", X9250U }, + { } +}; +MODULE_DEVICE_TABLE(spi, x9250_id_table); + +static struct spi_driver x9250_spi_driver = { + .driver = { + .name = "x9250", + .of_match_table = x9250_of_match, + }, + .id_table = x9250_id_table, + .probe = x9250_probe, +}; + +module_spi_driver(x9250_spi_driver); + +MODULE_AUTHOR("Herve Codina "); +MODULE_DESCRIPTION("X9250 ALSA SoC driver"); +MODULE_LICENSE("GPL"); From patchwork Thu Apr 20 12:13:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 85891 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp298546vqo; 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[2620:137:e000::1:20]) by mx.google.com with ESMTP id b21-20020a170902d41500b001a66afd1fcfsi1508076ple.651.2023.04.20.05.33.30; Thu, 20 Apr 2023 05:33:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@bootlin.com header.s=gm1 header.b=oXL0ibKN; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=bootlin.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234833AbjDTMO2 (ORCPT + 99 others); Thu, 20 Apr 2023 08:14:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37154 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234758AbjDTMOR (ORCPT ); Thu, 20 Apr 2023 08:14:17 -0400 Received: from relay11.mail.gandi.net (relay11.mail.gandi.net [217.70.178.231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 390E25585; Thu, 20 Apr 2023 05:13:59 -0700 (PDT) Received: (Authenticated sender: herve.codina@bootlin.com) by mail.gandi.net (Postfix) with ESMTPA id AF311100005; Thu, 20 Apr 2023 12:13:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1681992837; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=PqkC2hlSfWIiijztGsfpugS5O+kwYH1qXwTL4AZW7ec=; b=oXL0ibKNLDEGrmD+/aNtdz/dvm9c/dy5iIknXxkngvXR+5OAoOQLbUlARTV7rA5VhYjpcP /HvQqVfcc/BqseN4aVkTaQ8LtiBS4W4Qoxe3+GkU4ey+1XlxK7jzECjuWbQGPk/Q6kPKI7 FfIlRaqbalSyjCiu7mnMwG2gRHiQCmp3uSRwj1h/Cl7796bycJUPL8m+i/hLIeOU/yQGxs gS52jEpOYVqIRG2iiHRiL6xwsj28PZ/KdeFf5H5tTXUN3+Ho2srys4UW3S9V82nBWhUQlV HwjEMCICSglnh1nWxKVZK2zD+VyM0KZbpmSlTImme+gPf/H2CO5gV/cCVmj33A== From: Herve Codina To: Herve Codina , Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Krzysztof Kozlowski Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Christophe Leroy , Thomas Petazzoni Subject: [PATCH 3/3] MAINTAINERS: add the Renesas X9250 driver entry Date: Thu, 20 Apr 2023 14:13:20 +0200 Message-Id: <20230420121320.252884-4-herve.codina@bootlin.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230420121320.252884-1-herve.codina@bootlin.com> References: <20230420121320.252884-1-herve.codina@bootlin.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1763698567246635766?= X-GMAIL-MSGID: =?utf-8?q?1763698567246635766?= After contributing the driver, add myself as the maintainer for the Renesas X9250 IIO driver. Signed-off-by: Herve Codina --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 8ec7ccba9848..0027af3e14cb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17926,6 +17926,13 @@ S: Maintained F: Documentation/devicetree/bindings/clock/renesas,versaclock7.yaml F: drivers/clk/clk-versaclock7.c +RENESAS X9250 DIGITAL POTENTIOMETERS DRIVER +M: Herve Codina +L: linux-iio@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml +F: drivers/iio/potentiometer/x9250.c + RESET CONTROLLER FRAMEWORK M: Philipp Zabel S: Maintained