From patchwork Sat Jul 24 19:04:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Branchereau X-Patchwork-Id: 12397749 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B19F8C4320E for ; Sat, 24 Jul 2021 19:05:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C29760E98 for ; Sat, 24 Jul 2021 19:05:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229911AbhGXSZC (ORCPT ); Sat, 24 Jul 2021 14:25:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47874 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229745AbhGXSZA (ORCPT ); Sat, 24 Jul 2021 14:25:00 -0400 Received: from mail-wm1-x330.google.com (mail-wm1-x330.google.com [IPv6:2a00:1450:4864:20::330]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A9FB3C061757; Sat, 24 Jul 2021 12:05:30 -0700 (PDT) Received: by mail-wm1-x330.google.com with SMTP id n11so2753099wmd.2; Sat, 24 Jul 2021 12:05:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=r4l4X9Ml9axxQp0KFzsTd5BH2EID20QmHeunm7jfaaI=; b=EFbKtpEYqM0JbnaWCyMfLkzsjfqn+6n7VqWYEVhYWZ/1W5/DVxhg3o2JDUl8Zv4B5U +RYeF229YNGBTT6REqUCSa0+KeFGYlPVdJaMXozsXgVFl5CyyEt1mCVVh+vto+9VTf8t QJa4+/Sv4R7SgCaI0Xzll8rlQHeBndnCiG/akrLu60rEe89PGtmbwjGACuseUPAh+Ryf tsbYE+6UaBvxD5WmGriGe7inXieEf34KE57VRSj26MAez9w4n7VRQhwQgQPTXopYnTPl 6lB+SGXJEmwvjahEOgl4kpvn+GmvcaNd2NkJxo+Y7fqACiaqvfWCmP7vWItp7Td7KYxa WDOQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=r4l4X9Ml9axxQp0KFzsTd5BH2EID20QmHeunm7jfaaI=; b=I0nGJqd6Z+DiSj14vuvRElXSIBECu2Xe2Rqdv5XhSs8cXgkSQ1fydDfxGle64TUuv5 QowUqgTBOPsn9tTdc7ldqsP2Zp8EZYooL8ITkXbC82P5T0qiZ6MUSKjhLA9zcJmt2OXG 3cErj/1nWdyxLlU9XLZb07BWBwCo4eocwebzVV4Nc83myBnLvILYSybBE446WgYYja/W qtq1YY/rTVmgeoBA0tjwo0Jvs5Sm1U0cvhBf7MportC/7MsgYrMjPo+1BCnsabKUuUcl NbPr/iJ3BQB+GIRV0tBCmXGy9pSBFjUN8Thazuon85SlFJ439Qp4Ns8D04QoXJqdKhzF tSzQ== X-Gm-Message-State: AOAM530R5NJClGI78x2Fev9InlSZMEY0n9+vEpIXMeHVufZu1zu85KSc DUVNgBny8L96dOZTsB55vb0= X-Google-Smtp-Source: ABdhPJyf2ox5QLWxNIExZYLr3mmgGNJUkVFz4luV6S7JpaNeRe7Kp9Gm/Ag1xINQHYWW1pl0n2wKXg== X-Received: by 2002:a1c:26c4:: with SMTP id m187mr325127wmm.71.1627153529062; Sat, 24 Jul 2021 12:05:29 -0700 (PDT) Received: from monk.home (astrasbourg-157-1-7-84.w90-40.abo.wanadoo.fr. [90.40.218.84]) by smtp.gmail.com with ESMTPSA id j15sm1117798wms.20.2021.07.24.12.05.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 24 Jul 2021 12:05:28 -0700 (PDT) From: Christophe Branchereau Cc: jic23@kernel.org, lars@metafoo.de, linux-mips@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, devicetree@vger.kernel.org, linux@roeck-us.net, contact@artur-rojek.eu, paul@crapouillou.net, Christophe Branchereau Subject: [PATCH v3 3/5] iio/adc: ingenic: add JZ4760 support to the sadc driver Date: Sat, 24 Jul 2021 21:04:47 +0200 Message-Id: <20210724190449.221894-4-cbranchereau@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210724190449.221894-1-cbranchereau@gmail.com> References: <20210724190449.221894-1-cbranchereau@gmail.com> MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org The jz4760 sadc is very similar to the jz4770 one, but has a VREF of 2.5V and 3 aux channels. modify ingenic_adc_read_chan_info_raw() needs a change to account for it. Signed-off-by: Christophe Branchereau Reviewed-by: Paul Cercueil --- drivers/iio/adc/ingenic-adc.c | 82 +++++++++++++++++++++++++++++++++-- 1 file changed, 78 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/ingenic-adc.c b/drivers/iio/adc/ingenic-adc.c index 40f2d8c2cf72..6b9af0530590 100644 --- a/drivers/iio/adc/ingenic-adc.c +++ b/drivers/iio/adc/ingenic-adc.c @@ -71,6 +71,7 @@ #define JZ4725B_ADC_BATTERY_HIGH_VREF_BITS 10 #define JZ4740_ADC_BATTERY_HIGH_VREF (7500 * 0.986) #define JZ4740_ADC_BATTERY_HIGH_VREF_BITS 12 +#define JZ4760_ADC_BATTERY_VREF 2500 #define JZ4770_ADC_BATTERY_VREF 1200 #define JZ4770_ADC_BATTERY_VREF_BITS 12 @@ -295,6 +296,10 @@ static const int jz4740_adc_battery_scale_avail[] = { JZ_ADC_BATTERY_LOW_VREF, JZ_ADC_BATTERY_LOW_VREF_BITS, }; +static const int jz4760_adc_battery_scale_avail[] = { + JZ4760_ADC_BATTERY_VREF, JZ4770_ADC_BATTERY_VREF_BITS, +}; + static const int jz4770_adc_battery_raw_avail[] = { 0, 1, (1 << JZ4770_ADC_BATTERY_VREF_BITS) - 1, }; @@ -400,6 +405,47 @@ static const struct iio_chan_spec jz4740_channels[] = { }, }; +static const struct iio_chan_spec jz4760_channels[] = { + { + .extend_name = "aux", + .type = IIO_VOLTAGE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .indexed = 1, + .channel = INGENIC_ADC_AUX0, + .scan_index = -1, + }, + { + .extend_name = "aux1", + .type = IIO_VOLTAGE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .indexed = 1, + .channel = INGENIC_ADC_AUX, + .scan_index = -1, + }, + { + .extend_name = "aux2", + .type = IIO_VOLTAGE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .indexed = 1, + .channel = INGENIC_ADC_AUX2, + .scan_index = -1, + }, + { + .extend_name = "battery", + .type = IIO_VOLTAGE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .indexed = 1, + .channel = INGENIC_ADC_BATTERY, + .scan_index = -1, + }, +}; + static const struct iio_chan_spec jz4770_channels[] = { { .type = IIO_VOLTAGE, @@ -526,6 +572,20 @@ static const struct ingenic_adc_soc_data jz4740_adc_soc_data = { .init_clk_div = NULL, /* no ADCLK register on JZ4740 */ }; +static const struct ingenic_adc_soc_data jz4760_adc_soc_data = { + .battery_high_vref = JZ4760_ADC_BATTERY_VREF, + .battery_high_vref_bits = JZ4770_ADC_BATTERY_VREF_BITS, + .battery_raw_avail = jz4770_adc_battery_raw_avail, + .battery_raw_avail_size = ARRAY_SIZE(jz4770_adc_battery_raw_avail), + .battery_scale_avail = jz4760_adc_battery_scale_avail, + .battery_scale_avail_size = ARRAY_SIZE(jz4760_adc_battery_scale_avail), + .battery_vref_mode = false, + .has_aux_md = true, + .channels = jz4760_channels, + .num_channels = ARRAY_SIZE(jz4760_channels), + .init_clk_div = jz4770_adc_init_clk_div, +}; + static const struct ingenic_adc_soc_data jz4770_adc_soc_data = { .battery_high_vref = JZ4770_ADC_BATTERY_VREF, .battery_high_vref_bits = JZ4770_ADC_BATTERY_VREF_BITS, @@ -569,7 +629,7 @@ static int ingenic_adc_read_chan_info_raw(struct iio_dev *iio_dev, struct iio_chan_spec const *chan, int *val) { - int bit, ret, engine = (chan->channel == INGENIC_ADC_BATTERY); + int cmd, ret, engine = (chan->channel == INGENIC_ADC_BATTERY); struct ingenic_adc *adc = iio_priv(iio_dev); ret = clk_enable(adc->clk); @@ -579,11 +639,22 @@ static int ingenic_adc_read_chan_info_raw(struct iio_dev *iio_dev, return ret; } - /* We cannot sample AUX/AUX2 in parallel. */ + /* We cannot sample the aux channels in parallel. */ mutex_lock(&adc->aux_lock); if (adc->soc_data->has_aux_md && engine == 0) { - bit = BIT(chan->channel == INGENIC_ADC_AUX2); - ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_AUX_MD, bit); + switch (chan->channel) { + case INGENIC_ADC_AUX0: + cmd = 0; + break; + case INGENIC_ADC_AUX: + cmd = 1; + break; + case INGENIC_ADC_AUX2: + cmd = 2; + break; + } + + ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_AUX_MD, cmd); } ret = ingenic_adc_capture(adc, engine); @@ -591,6 +662,7 @@ static int ingenic_adc_read_chan_info_raw(struct iio_dev *iio_dev, goto out; switch (chan->channel) { + case INGENIC_ADC_AUX0: case INGENIC_ADC_AUX: case INGENIC_ADC_AUX2: *val = readw(adc->base + JZ_ADC_REG_ADSDAT); @@ -621,6 +693,7 @@ static int ingenic_adc_read_raw(struct iio_dev *iio_dev, return ingenic_adc_read_chan_info_raw(iio_dev, chan, val); case IIO_CHAN_INFO_SCALE: switch (chan->channel) { + case INGENIC_ADC_AUX0: case INGENIC_ADC_AUX: case INGENIC_ADC_AUX2: *val = JZ_ADC_AUX_VREF; @@ -832,6 +905,7 @@ static int ingenic_adc_probe(struct platform_device *pdev) static const struct of_device_id ingenic_adc_of_match[] = { { .compatible = "ingenic,jz4725b-adc", .data = &jz4725b_adc_soc_data, }, { .compatible = "ingenic,jz4740-adc", .data = &jz4740_adc_soc_data, }, + { .compatible = "ingenic,jz4760-adc", .data = &jz4760_adc_soc_data, }, { .compatible = "ingenic,jz4770-adc", .data = &jz4770_adc_soc_data, }, { }, };