From patchwork Mon Jun 19 15:42:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maksim Kiselev X-Patchwork-Id: 13284718 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 84137EB64DB for ; Mon, 19 Jun 2023 15:43:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231910AbjFSPnh (ORCPT ); Mon, 19 Jun 2023 11:43:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231921AbjFSPng (ORCPT ); Mon, 19 Jun 2023 11:43:36 -0400 Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E5AF83; Mon, 19 Jun 2023 08:43:35 -0700 (PDT) Received: by mail-lf1-x12f.google.com with SMTP id 2adb3069b0e04-4f85966b0f2so4031482e87.3; Mon, 19 Jun 2023 08:43:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1687189413; x=1689781413; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=By9LviJpFD6M31Xuvf8iRdC/f7qq5558NMtCfn3H0qE=; b=IsdcirYiybQ9DgqSQax5rr1IUuYvwIv8sXacQA3PptD5vmSsVvVnua0Yyw0/pIB3E1 /+5dbWfz5ouAnktDaYJhrRkNVW6mWTnZ7rw8UomJq8jQwTJUjodwJ3XOvnbyQAkM1Hwv w6H1RvNeuFcs5lsSFjnaTXW1BVUcG5+BaDtiw2r4UBqeGQtKbevlf9sPYWMGcYmx88mg Zfw80n71GUExELHO8yISSdiI61YS+seyOJgr0EgA3yXTwqsjADWuyw0VI3an+rmKSbAE aIqCU925PykndGkDQm1Ojm0o/6vQmeXBlc/jSmpYVEUmL6LiC3po0OP19K6Npx/UM9RS o0rw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687189413; x=1689781413; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=By9LviJpFD6M31Xuvf8iRdC/f7qq5558NMtCfn3H0qE=; b=l7wo1aearfDmCLBH6o/uTJa6Fgk972dEb7EpNYQRGI0FfHqk/f3Uc1TbtsqQrXc8UW aes7/m2PYAtil+NBmhltcPYW+JX7H5rjgmEaKTjQM/xmu4dUs2PluaZgTPe1m0rrywAH iBNQRd4CJW6SwE/h+k7HwRIH2Sc2QV01MsqixrIfMUY0ZnALRlsLFTq4eV7JrUIkBFEr 9Cummu52ySIYqIvsIIiIJYUBT1FHC63xZqFrnrxWUi96enAnxWkl3hzZzYJcTR0gSv2t 54R6RWSxqB7mwKnJ4TteS3lB9lG7XRZsz1Vy5HyYUKDSwWRMZSnDFkigXgk3WFVrpw3H ZDfg== X-Gm-Message-State: AC+VfDxWUnJCJkAZnpuzBHuZCsGIHFnIP5eZc9S6dMbOMJ2aFgQJCTAg gPAPg0URfl96tNvtXXNW5wnvqcBJGl4nkUXS X-Google-Smtp-Source: ACHHUZ7SZr0BfAlnP0I+J+Ztm3YUYwpYJ5m1CVqsbJXoe5r6Dql+Pd7bzmdwb6JD3xJgMILfAb2W3w== X-Received: by 2002:a19:f201:0:b0:4f4:dd51:aec7 with SMTP id q1-20020a19f201000000b004f4dd51aec7mr4719115lfh.54.1687189412587; Mon, 19 Jun 2023 08:43:32 -0700 (PDT) Received: from user-PC.. ([178.134.198.138]) by smtp.gmail.com with ESMTPSA id f11-20020a19ae0b000000b004f85e53250bsm1207144lfc.191.2023.06.19.08.43.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jun 2023 08:43:32 -0700 (PDT) From: Maksim Kiselev To: linux-iio@vger.kernel.org Cc: Maksim Kiselev , Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Cristian Ciocaltea , Andre Przywara , Andy Shevchenko , Cosmin Tanislav , AngeloGioacchino Del Regno , Hugo Villeneuve , Arnd Bergmann , =?utf-8?q?Leonard_G=C3=B6hrs?= , ChiYuan Huang , Ramona Bolboaca , Ibrahim Tilki , ChiaEn Wu , William Breathitt Gray , Haibo Chen , Mike Looijmans , Quentin Schulz , Maxime Ripard , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v8 1/4] iio: adc: Kconfig change description for Allwinner GPADC Date: Mon, 19 Jun 2023 18:42:24 +0300 Message-Id: <20230619154252.3951913-2-bigunclemax@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230619154252.3951913-1-bigunclemax@gmail.com> References: <20230619154252.3951913-1-bigunclemax@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org This patch adds SoCs names to Allwinner GPADC description to make it more informative. Fixes: d1caa9905538 ("iio: adc: add support for Allwinner SoCs ADC") Signed-off-by: Maksim Kiselev --- drivers/iio/adc/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index eb2b09ef5d5b..d93868684c7b 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1105,7 +1105,7 @@ config STMPE_ADC built-in ADC block (stmpe811). config SUN4I_GPADC - tristate "Support for the Allwinner SoCs GPADC" + tristate "Allwinner A10/A13/A31 and similar GPADCs driver" depends on IIO depends on MFD_SUN4I_GPADC || MACH_SUN8I depends on THERMAL || !THERMAL_OF From patchwork Mon Jun 19 15:42:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maksim Kiselev X-Patchwork-Id: 13284719 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6737AEB64D9 for ; Mon, 19 Jun 2023 15:44:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231921AbjFSPoB (ORCPT ); Mon, 19 Jun 2023 11:44:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231944AbjFSPn7 (ORCPT ); Mon, 19 Jun 2023 11:43:59 -0400 Received: from mail-lf1-x12e.google.com (mail-lf1-x12e.google.com [IPv6:2a00:1450:4864:20::12e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 755B813D; Mon, 19 Jun 2023 08:43:56 -0700 (PDT) Received: by mail-lf1-x12e.google.com with SMTP id 2adb3069b0e04-4f8689fbf59so2159426e87.0; Mon, 19 Jun 2023 08:43:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1687189434; x=1689781434; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=K6wiwrdQYhDrsextQ3sK9fJ/yrE9cOuHSQKWVWvJmh4=; b=UiaPZyxhB+LXtfStG2jZH1FXMaYjben5gLJ4mfvSclujK5+fnYNJedpJTQaPGFrEG4 FnxPA9uAsFk8TmjWaL2Pdtpvg8312oEM4EiXUqEMcRYtp6RVUy8OUNds+iwYR8eWFIo0 5nRWqZwD2Gk7cJI0/1mE0qLqtOE91dKBZaj5htoRwW+ktIzQbJ57aMRiqp38Nkein0t2 Y9vVjgthmbmkUEsyMXWCiL61YVssv3DNR+5R5jwrP5+XPNAuEBUvlGA6yiF40XyfHBcf GD+zjKi4I32v1JOBjs1i6liEGRiHbyTRJ1JXOTJni/J7cIGjXX+5p5wbkHQgYzbxJpx5 jx7A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687189434; x=1689781434; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=K6wiwrdQYhDrsextQ3sK9fJ/yrE9cOuHSQKWVWvJmh4=; b=hCK9MfVKjTntScTSGa0iNesYGrS6GltgjO4aU/lxIoHEVM1K/lKxAYV23XucWSL7U8 OQz3DHRhqpM6V1YXljdgSTilrd0fPjt0tMwCX9XyY4MqVlZ/gOwykEBdKmUlyisUllVR 5VNGISTUX8nlb5XJl3P3xYKDiKrcoC9Xv9gZWrGgHgOVYUIh/Pgwsy7u3P6HX+j4qiaE EKgik/Vz3ePg0YTd6Z8Pq4TpvG1IefRMCZpdslpfuF7/EEKh1iXgBOtQx7rNOohDDyrc 48b4l7zWcFuoM0sWKKWBidE0yWgMI058o9YvPqnCztmE0oCufRvr3XQmOlXKSTHOFJci GpEA== X-Gm-Message-State: AC+VfDzOqSxsxrdL88CkY45lRPJtTqgyhGyLah4mzA86tWlqY4477sTq S2ai2LbQdh83RBDI4H9JwYdIn9wUotDV4sMh X-Google-Smtp-Source: ACHHUZ47O3SZh9scPDjuS2GqySe6bp6czLOYITYX78gBGlHi1r61/ZQ8s7lw5bQQ4csOmoAohU1ipg== X-Received: by 2002:a05:6512:3104:b0:4f8:5966:9c64 with SMTP id n4-20020a056512310400b004f859669c64mr2731702lfb.5.1687189434275; Mon, 19 Jun 2023 08:43:54 -0700 (PDT) Received: from user-PC.. ([178.134.198.138]) by smtp.gmail.com with ESMTPSA id f11-20020a19ae0b000000b004f85e53250bsm1207144lfc.191.2023.06.19.08.43.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jun 2023 08:43:53 -0700 (PDT) From: Maksim Kiselev To: linux-iio@vger.kernel.org Cc: Maksim Kiselev , Andy Shevchenko , Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Cristian Ciocaltea , Andre Przywara , Cosmin Tanislav , AngeloGioacchino Del Regno , Haibo Chen , William Breathitt Gray , ChiYuan Huang , Ramona Bolboaca , Ibrahim Tilki , ChiaEn Wu , Arnd Bergmann , Mike Looijmans , =?utf-8?q?Leonard_G=C3=B6hrs?= , Maxime Ripard , Quentin Schulz , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v8 2/4] iio: adc: Add Allwinner D1/T113s/R329/T507 SoCs GPADC Date: Mon, 19 Jun 2023 18:42:25 +0300 Message-Id: <20230619154252.3951913-3-bigunclemax@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230619154252.3951913-1-bigunclemax@gmail.com> References: <20230619154252.3951913-1-bigunclemax@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org The General Purpose ADC (GPADC) can convert the external signal into a certain proportion of digital value, to realize the measurement of analog signal, which can be applied to power detection and key detection. Theoretically, this ADC can support up to 16 channels. All SoCs below contain this GPADC IP. The only difference between them is the number of available channels: T113 - 1 channel D1 - 2 channels R329 - 4 channels T507 - 4 channels Reviewed-by: Andy Shevchenko Signed-off-by: Maksim Kiselev --- drivers/iio/adc/Kconfig | 10 ++ drivers/iio/adc/Makefile | 1 + drivers/iio/adc/sun20i-gpadc-iio.c | 276 +++++++++++++++++++++++++++++ 3 files changed, 287 insertions(+) create mode 100644 drivers/iio/adc/sun20i-gpadc-iio.c diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index d93868684c7b..dad394d8c023 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1123,6 +1123,16 @@ config SUN4I_GPADC To compile this driver as a module, choose M here: the module will be called sun4i-gpadc-iio. +config SUN20I_GPADC + tristate "Allwinner D1/T113s/T507/R329 and similar GPADCs driver" + depends on ARCH_SUNXI || COMPILE_TEST + help + Say yes here to build support for Allwinner (D1, T113, T507 and R329) + SoCs GPADC. This ADC provides up to 16 channels. + + To compile this driver as a module, choose M here: the module will be + called sun20i-gpadc-iio. + config TI_ADC081C tristate "Texas Instruments ADC081C/ADC101C/ADC121C family" depends on I2C diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index e07e4a3e6237..fc4ef71d5f8f 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -95,6 +95,7 @@ obj-$(CONFIG_RZG2L_ADC) += rzg2l_adc.o obj-$(CONFIG_SC27XX_ADC) += sc27xx_adc.o obj-$(CONFIG_SPEAR_ADC) += spear_adc.o obj-$(CONFIG_SUN4I_GPADC) += sun4i-gpadc-iio.o +obj-$(CONFIG_SUN20I_GPADC) += sun20i-gpadc-iio.o obj-$(CONFIG_STM32_ADC_CORE) += stm32-adc-core.o obj-$(CONFIG_STM32_ADC) += stm32-adc.o obj-$(CONFIG_STM32_DFSDM_CORE) += stm32-dfsdm-core.o diff --git a/drivers/iio/adc/sun20i-gpadc-iio.c b/drivers/iio/adc/sun20i-gpadc-iio.c new file mode 100644 index 000000000000..6a893d484cf7 --- /dev/null +++ b/drivers/iio/adc/sun20i-gpadc-iio.c @@ -0,0 +1,276 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * GPADC driver for sunxi platforms (D1, T113-S3 and R329) + * Copyright (c) 2023 Maksim Kiselev + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define SUN20I_GPADC_DRIVER_NAME "sun20i-gpadc" + +/* Register map definition */ +#define SUN20I_GPADC_SR 0x00 +#define SUN20I_GPADC_CTRL 0x04 +#define SUN20I_GPADC_CS_EN 0x08 +#define SUN20I_GPADC_FIFO_INTC 0x0c +#define SUN20I_GPADC_FIFO_INTS 0x10 +#define SUN20I_GPADC_FIFO_DATA 0X14 +#define SUN20I_GPADC_CB_DATA 0X18 +#define SUN20I_GPADC_DATAL_INTC 0x20 +#define SUN20I_GPADC_DATAH_INTC 0x24 +#define SUN20I_GPADC_DATA_INTC 0x28 +#define SUN20I_GPADC_DATAL_INTS 0x30 +#define SUN20I_GPADC_DATAH_INTS 0x34 +#define SUN20I_GPADC_DATA_INTS 0x38 +#define SUN20I_GPADC_CH_CMP_DATA(x) (0x40 + (x) * 4) +#define SUN20I_GPADC_CH_DATA(x) (0x80 + (x) * 4) + +#define SUN20I_GPADC_CTRL_ADC_AUTOCALI_EN_MASK BIT(23) +#define SUN20I_GPADC_CTRL_WORK_MODE_MASK GENMASK(19, 18) +#define SUN20I_GPADC_CTRL_ADC_EN_MASK BIT(16) +#define SUN20I_GPADC_CS_EN_ADC_CH(x) BIT(x) +#define SUN20I_GPADC_DATA_INTC_CH_DATA_IRQ_EN(x) BIT(x) + +#define SUN20I_GPADC_WORK_MODE_SINGLE 0 + +struct sun20i_gpadc_iio { + void __iomem *regs; + struct completion completion; + int last_channel; + /* + * Lock to protect the device state during a potential concurrent + * read access from userspace. Reading a raw value requires a sequence + * of register writes, then a wait for a completion callback, + * and finally a register read, during which userspace could issue + * another read request. This lock protects a read access from + * ocurring before another one has finished. + */ + struct mutex lock; +}; + +static int sun20i_gpadc_adc_read(struct sun20i_gpadc_iio *info, + struct iio_chan_spec const *chan, int *val) +{ + u32 ctrl; + int ret = IIO_VAL_INT; + + mutex_lock(&info->lock); + + reinit_completion(&info->completion); + + if (info->last_channel != chan->channel) { + info->last_channel = chan->channel; + + /* enable the analog input channel */ + writel(SUN20I_GPADC_CS_EN_ADC_CH(chan->channel), + info->regs + SUN20I_GPADC_CS_EN); + + /* enable the data irq for input channel */ + writel(SUN20I_GPADC_DATA_INTC_CH_DATA_IRQ_EN(chan->channel), + info->regs + SUN20I_GPADC_DATA_INTC); + } + + /* enable the ADC function */ + ctrl = readl(info->regs + SUN20I_GPADC_CTRL); + ctrl |= FIELD_PREP(SUN20I_GPADC_CTRL_ADC_EN_MASK, 1); + writel(ctrl, info->regs + SUN20I_GPADC_CTRL); + + /* + * According to the datasheet maximum acquire time(TACQ) can be + * (65535+1)/24Mhz and conversion time(CONV_TIME) is always constant + * and equal to 14/24Mhz, so (TACQ+CONV_TIME) <= 2.73125ms. + * A 10ms delay should be enough to make sure an interrupt occurs in + * normal conditions. If it doesn't occur, then there is a timeout. + */ + if (!wait_for_completion_timeout(&info->completion, msecs_to_jiffies(10))) { + ret = -ETIMEDOUT; + goto err_unlock; + } + + /* read the ADC data */ + *val = readl(info->regs + SUN20I_GPADC_CH_DATA(chan->channel)); + +err_unlock: + mutex_unlock(&info->lock); + + return ret; +} + +static int sun20i_gpadc_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct sun20i_gpadc_iio *info = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + return sun20i_gpadc_adc_read(info, chan, val); + case IIO_CHAN_INFO_SCALE: + /* value in mv = 1800mV / 4096 raw */ + *val = 1800; + *val2 = 12; + return IIO_VAL_FRACTIONAL_LOG2; + default: + return -EINVAL; + } +} + +static irqreturn_t sun20i_gpadc_irq_handler(int irq, void *data) +{ + struct sun20i_gpadc_iio *info = data; + + /* clear data interrupt status register */ + writel(GENMASK(31, 0), info->regs + SUN20I_GPADC_DATA_INTS); + + complete(&info->completion); + + return IRQ_HANDLED; +} + +static const struct iio_info sun20i_gpadc_iio_info = { + .read_raw = sun20i_gpadc_read_raw, +}; + +static void sun20i_gpadc_reset_assert(void *data) +{ + struct reset_control *rst = data; + + reset_control_assert(rst); +} + +static int sun20i_gpadc_alloc_channels(struct iio_dev *indio_dev, + struct device *dev) +{ + unsigned int channel; + int num_channels, i, ret; + struct iio_chan_spec *channels; + struct fwnode_handle *node; + + num_channels = device_get_child_node_count(dev); + if (num_channels == 0) + return dev_err_probe(dev, -ENODEV, "no channel children\n"); + + channels = devm_kcalloc(dev, num_channels, sizeof(*channels), + GFP_KERNEL); + if (!channels) + return -ENOMEM; + + i = 0; + device_for_each_child_node(dev, node) { + ret = fwnode_property_read_u32(node, "reg", &channel); + if (ret) { + fwnode_handle_put(node); + return dev_err_probe(dev, ret, "invalid channel number\n"); + } + + channels[i].type = IIO_VOLTAGE; + channels[i].indexed = 1; + channels[i].channel = channel; + channels[i].info_mask_separate = BIT(IIO_CHAN_INFO_RAW); + channels[i].info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE); + + i++; + } + + indio_dev->channels = channels; + indio_dev->num_channels = num_channels; + + return 0; +} + +static int sun20i_gpadc_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct iio_dev *indio_dev; + struct sun20i_gpadc_iio *info; + struct reset_control *rst; + struct clk *clk; + int irq; + int ret; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*info)); + if (!indio_dev) + return -ENOMEM; + + info = iio_priv(indio_dev); + info->last_channel = -1; + + mutex_init(&info->lock); + init_completion(&info->completion); + + ret = sun20i_gpadc_alloc_channels(indio_dev, dev); + if (ret) + return ret; + + indio_dev->info = &sun20i_gpadc_iio_info; + indio_dev->name = SUN20I_GPADC_DRIVER_NAME; + + info->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(info->regs)) + return PTR_ERR(info->regs); + + clk = devm_clk_get_enabled(dev, NULL); + if (IS_ERR(clk)) + return dev_err_probe(dev, PTR_ERR(clk), "failed to enable bus clock\n"); + + rst = devm_reset_control_get_exclusive(dev, NULL); + if (IS_ERR(rst)) + return dev_err_probe(dev, PTR_ERR(rst), "failed to get reset control\n"); + + ret = reset_control_deassert(rst); + if (ret) + return dev_err_probe(dev, ret, "failed to deassert reset\n"); + + ret = devm_add_action_or_reset(dev, sun20i_gpadc_reset_assert, rst); + if (ret) + return ret; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + ret = devm_request_irq(dev, irq, sun20i_gpadc_irq_handler, 0, + dev_name(dev), info); + if (ret) + return dev_err_probe(dev, ret, "failed requesting irq %d\n", irq); + + writel(FIELD_PREP(SUN20I_GPADC_CTRL_ADC_AUTOCALI_EN_MASK, 1) | + FIELD_PREP(SUN20I_GPADC_CTRL_WORK_MODE_MASK, SUN20I_GPADC_WORK_MODE_SINGLE), + info->regs + SUN20I_GPADC_CTRL); + + ret = devm_iio_device_register(dev, indio_dev); + if (ret) + return dev_err_probe(dev, ret, "could not register the device\n"); + + return 0; +} + +static const struct of_device_id sun20i_gpadc_of_id[] = { + { .compatible = "allwinner,sun20i-d1-gpadc" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, sun20i_gpadc_of_id); + +static struct platform_driver sun20i_gpadc_driver = { + .driver = { + .name = SUN20I_GPADC_DRIVER_NAME, + .of_match_table = sun20i_gpadc_of_id, + }, + .probe = sun20i_gpadc_probe, +}; +module_platform_driver(sun20i_gpadc_driver); + +MODULE_DESCRIPTION("ADC driver for sunxi platforms"); +MODULE_AUTHOR("Maksim Kiselev "); +MODULE_LICENSE("GPL"); From patchwork Mon Jun 19 15:42:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maksim Kiselev X-Patchwork-Id: 13284720 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57BF6EB64DC for ; Mon, 19 Jun 2023 15:44:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231964AbjFSPoX (ORCPT ); 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([178.134.198.138]) by smtp.gmail.com with ESMTPSA id f11-20020a19ae0b000000b004f85e53250bsm1207144lfc.191.2023.06.19.08.44.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jun 2023 08:44:15 -0700 (PDT) From: Maksim Kiselev To: linux-iio@vger.kernel.org Cc: Maksim Kiselev , Conor Dooley , Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Cristian Ciocaltea , Andy Shevchenko , Cosmin Tanislav , =?utf-8?q?Leonard_G=C3=B6hrs?= , ChiaEn Wu , ChiYuan Huang , Ramona Bolboaca , Ibrahim Tilki , William Breathitt Gray , Arnd Bergmann , Haibo Chen , Quentin Schulz , Maxime Ripard , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v8 3/4] dt-bindings: iio: adc: Add Allwinner D1/T113s/R329/T507 SoCs GPADC Date: Mon, 19 Jun 2023 18:42:26 +0300 Message-Id: <20230619154252.3951913-4-bigunclemax@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230619154252.3951913-1-bigunclemax@gmail.com> References: <20230619154252.3951913-1-bigunclemax@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Allwinner's D1/T113s/R329/T507 SoCs have a new general purpose ADC. This ADC is the same for all of this SoCs. The only difference is the number of available channels. Reviewed-by: Conor Dooley Signed-off-by: Maksim Kiselev --- .../iio/adc/allwinner,sun20i-d1-gpadc.yaml | 91 +++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml b/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml new file mode 100644 index 000000000000..7ef46c90ebc8 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml @@ -0,0 +1,91 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/allwinner,sun20i-d1-gpadc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allwinner D1 General Purpose ADC + +maintainers: + - Maksim Kiselev + +properties: + compatible: + enum: + - allwinner,sun20i-d1-gpadc + + "#io-channel-cells": + const: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + + clocks: + maxItems: 1 + + interrupts: + maxItems: 1 + + reg: + maxItems: 1 + + resets: + maxItems: 1 + +patternProperties: + "^channel@[0-9a-f]+$": + $ref: adc.yaml + type: object + description: + Represents the internal channels of the ADC. + + properties: + reg: + items: + minimum: 0 + maximum: 15 + + required: + - reg + + unevaluatedProperties: false + +required: + - "#io-channel-cells" + - clocks + - compatible + - interrupts + - reg + - resets + +additionalProperties: false + +examples: + - | + #include + #include + #include + + gpadc: adc@2009000 { + compatible = "allwinner,sun20i-d1-gpadc"; + reg = <0x2009000 0x400>; + clocks = <&ccu CLK_BUS_GPADC>; + resets = <&ccu RST_BUS_GPADC>; + interrupts = <73 IRQ_TYPE_LEVEL_HIGH>; + #io-channel-cells = <1>; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + }; + + channel@1 { + reg = <1>; + }; + }; +... From patchwork Mon Jun 19 15:42:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maksim Kiselev X-Patchwork-Id: 13284721 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03A30EB64DA for ; Mon, 19 Jun 2023 15:44:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232009AbjFSPoo (ORCPT ); Mon, 19 Jun 2023 11:44:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232040AbjFSPom (ORCPT ); Mon, 19 Jun 2023 11:44:42 -0400 Received: from mail-lf1-x12a.google.com (mail-lf1-x12a.google.com [IPv6:2a00:1450:4864:20::12a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9ABC7139; Mon, 19 Jun 2023 08:44:39 -0700 (PDT) Received: by mail-lf1-x12a.google.com with SMTP id 2adb3069b0e04-4f849605df4so4660599e87.3; Mon, 19 Jun 2023 08:44:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1687189477; x=1689781477; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=A2xW1pdD4hh2VGs4Mpg9cKE/j/pXz/wg2o6KnZsreRQ=; b=SXi9EuYemDFlDxp0BqouWi1+qLw4f2dj8Wiuwrapoqielba8KLGExvIZVg831z4yh3 n9YHgewmBi/vaHWDfDGSKEpC72HxQIzH8PcrDpN3EpQZvZMqRoHVJ7V8WC0h071yrRd/ yjJ1KFmUABIwfoo0Cwrw7pSyffKMlHGB0qgS1k8qkXTXKQ+OBnZ0SQ8rnR2diuoSUD5B fWhRAyGZkSnFTAsdlUAwXFnx2UYjxddxGfSfNnLGrO2nqRd1bq9WNetJYb+RsWW85ED2 zjFc46hV/eGrfqKuG/LfBj6tpbAUcdzezYY8RJOCeJSfHi2CKqHwiHBukPmYhJlnsQkq VzPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687189477; x=1689781477; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=A2xW1pdD4hh2VGs4Mpg9cKE/j/pXz/wg2o6KnZsreRQ=; b=MtUoM+Wx+hSzrmuAmsFL+oOWlx+VH7XN/amXwRWmPVAGIsiyxw6LXAkI2bzlgJGgCM jJJp5VIbifkadjU+u14gUs3KcGX2l09lmEu4RaXYOdnJF7XX5Bif3VxdmyA/rf3eYXx7 s5izV7VC35fTcoIwQy5/t18ppm8AY9KL7KbNwrkuZNXLi7OpqLHBc/q7iksmyo+xM+dS jz0HTj8kueOuIhQ26NY+RRv123yIS1ILl77QT8tb+JEI3nfe7VoYhaecvTTs/THwjoSu ei1ylaw88vW5iw4/eaRubSftp7AO4Y+3HM7acoXj5FgXokya0bMfc0aqQTDP/Ipw3bOI RlWg== X-Gm-Message-State: AC+VfDy6L886+rUJ/K71cai3qLQTwJEe+K5lus5Aqo5Nbti5A9xsnFVU fi76KZjv6qRD4AAfGr2GMkdONQvAZXuDgf7s X-Google-Smtp-Source: ACHHUZ6fyzgyF6IaPo1cFaZ/Jbu3BHrWZiNQ4Ii9axwoUxhdnuwBR6cJW7DJpqJrgj7c7vZ8IZ/jdQ== X-Received: by 2002:a19:505b:0:b0:4f8:5af4:73ef with SMTP id z27-20020a19505b000000b004f85af473efmr4062285lfj.28.1687189477519; Mon, 19 Jun 2023 08:44:37 -0700 (PDT) Received: from user-PC.. ([178.134.198.138]) by smtp.gmail.com with ESMTPSA id f11-20020a19ae0b000000b004f85e53250bsm1207144lfc.191.2023.06.19.08.44.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jun 2023 08:44:37 -0700 (PDT) From: Maksim Kiselev To: linux-iio@vger.kernel.org Cc: Maksim Kiselev , Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Cristian Ciocaltea , Andy Shevchenko , Cosmin Tanislav , AngeloGioacchino Del Regno , Ramona Bolboaca , =?utf-8?q?Leonard_G=C3=B6hrs?= , ChiYuan Huang , Ibrahim Tilki , ChiaEn Wu , William Breathitt Gray , Arnd Bergmann , Mike Looijmans , Maxime Ripard , Quentin Schulz , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v8 4/4] riscv: dts: allwinner: d1: Add GPADC node Date: Mon, 19 Jun 2023 18:42:27 +0300 Message-Id: <20230619154252.3951913-5-bigunclemax@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230619154252.3951913-1-bigunclemax@gmail.com> References: <20230619154252.3951913-1-bigunclemax@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org This patch adds declaration of the general purpose ADC for D1 and T113s SoCs. Signed-off-by: Maksim Kiselev Acked-by: Jernej Skrabec --- arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi index 922e8e0e2c09..cb353d5805cb 100644 --- a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi +++ b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi @@ -138,6 +138,16 @@ ccu: clock-controller@2001000 { #reset-cells = <1>; }; + gpadc: adc@2009000 { + compatible = "allwinner,sun20i-d1-gpadc"; + reg = <0x2009000 0x400>; + clocks = <&ccu CLK_BUS_GPADC>; + resets = <&ccu RST_BUS_GPADC>; + interrupts = ; + status = "disabled"; + #io-channel-cells = <1>; + }; + dmic: dmic@2031000 { compatible = "allwinner,sun20i-d1-dmic", "allwinner,sun50i-h6-dmic";