From patchwork Tue Dec 21 21:04:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cosmin Tanislav X-Patchwork-Id: 12690623 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 69671C4332F for ; Tue, 21 Dec 2021 21:05:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235782AbhLUVFA (ORCPT ); Tue, 21 Dec 2021 16:05:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53676 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235693AbhLUVE6 (ORCPT ); Tue, 21 Dec 2021 16:04:58 -0500 Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 923BCC061574; Tue, 21 Dec 2021 13:04:57 -0800 (PST) Received: by mail-ed1-x536.google.com with SMTP id y13so50893edd.13; Tue, 21 Dec 2021 13:04:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=3hzVVNNTwrq5MeJGsLzNhP86bxCeJA6LTvVaw5X/r10=; b=OskEJq3/KW0MjeBrRUj3nwaN1hCEx/JS5FDibN8BKckUHdzuLbgpfC9w90XWXZOI0K eF/P/q5GyEH/B/dLv+G40qyTekRs1M3J7ZyFXXgLwYrid688fzMyhmzG7fJyjikg6whD l47Mp9bTmsh29mZ6yUwaByz9bI/qpD2zz8H73t4HDJ73jWQCkPC3Hoe2Q4UgOD8bkDBt v4jiW5qP1jWPs7Dw4pFwj3EmOFj3ikJcbZcvCOnAvkTiXeSs3ETZRvvyLz8eMsAuqRgD Cm53eLPplQdAD56pAul16B1D67+mvCsGQnUpfpSS4+0T+aAWYw/1WPtt4B/BQD0rGRh0 SMSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=3hzVVNNTwrq5MeJGsLzNhP86bxCeJA6LTvVaw5X/r10=; b=RY4tObGq1btJuhPWZKeiYYdi9PYgO+zWpX702rxePa2yGWXq4OwidC9XWFe4bxodGh yuRwKD0LIBBh4zFGOsuBZmZRKUFr8iTZsRhLAFMFjtg09LN3n96uDXYsAqgJkyCXeaDh piQWozd3DBInGS7nNANcIm3zqtX55qsASyiB4nbjQqHaj3/uDtYaTIkX2GEQJKLl+l20 PYLaMoOPySdb4Pw7zgTsUQvd1wPrc1q8yjZ0SDGDV2VViIcAnCwHtpwpwcY+kC1zUzM7 TfgiNLsmC7bPO6Vk8tqjalv7S8cY4SbPk3fdLzgBjsaiu+t26GZRfvrW2VprczrDKdcA 0SRg== X-Gm-Message-State: AOAM532ITYLQP998J4MY2r0tztIN6bLQdIj+zwOxbA8clatM1ihVvqBh q0vZbCcRlBYV2AKYu3E06BM= X-Google-Smtp-Source: ABdhPJxWGRdFKqq/zWCWc/m1Az1dr/zE11NNWeTLyh9L4cbqYAdCcCSr+/Wrcp/sg5q+mPOg7m3G9A== X-Received: by 2002:a17:906:ca44:: with SMTP id jx4mr72640ejb.135.1640120696190; Tue, 21 Dec 2021 13:04:56 -0800 (PST) Received: from demon-pc.localdomain ([188.24.42.157]) by smtp.gmail.com with ESMTPSA id c3sm6355041edr.33.2021.12.21.13.04.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Dec 2021 13:04:55 -0800 (PST) From: Cosmin Tanislav Cc: cosmin.tanislav@analog.com, demonsingur@gmail.com, Jean Delvare , Guenter Roeck , linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 4/8] hwmon: (adt7x10) Use devm_hwmon_device_register_with_info Date: Tue, 21 Dec 2021 23:04:34 +0200 Message-Id: <20211221210438.2637430-5-demonsingur@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20211221210438.2637430-1-demonsingur@gmail.com> References: <20211221210438.2637430-1-demonsingur@gmail.com> MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org From: Cosmin Tanislav Describe the only available channel, implement read, write and is_visible callbacks. Signed-off-by: Cosmin Tanislav --- drivers/hwmon/adt7x10.c | 233 ++++++++++++++++++++-------------------- 1 file changed, 114 insertions(+), 119 deletions(-) diff --git a/drivers/hwmon/adt7x10.c b/drivers/hwmon/adt7x10.c index e8a6c541a590..2e6e54bf1d15 100644 --- a/drivers/hwmon/adt7x10.c +++ b/drivers/hwmon/adt7x10.c @@ -54,8 +54,6 @@ /* Each client has this additional data */ struct adt7x10_data { const struct adt7x10_ops *ops; - const char *name; - struct device *hwmon_dev; struct device *bus_dev; struct mutex update_lock; u8 config; @@ -218,14 +216,11 @@ static int ADT7X10_REG_TO_TEMP(struct adt7x10_data *data, s16 reg) /* sysfs attributes for hwmon */ -static ssize_t adt7x10_temp_show(struct device *dev, - struct device_attribute *da, char *buf) +static int adt7x10_temp_read(struct adt7x10_data *data, int index, long *val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(da); - struct adt7x10_data *data = dev_get_drvdata(dev); - + struct device *dev = data->bus_dev; - if (attr->index == 0) { + if (index == 0) { int ret; ret = adt7x10_update_temp(dev); @@ -233,39 +228,28 @@ static ssize_t adt7x10_temp_show(struct device *dev, return ret; } - return sprintf(buf, "%d\n", ADT7X10_REG_TO_TEMP(data, - data->temp[attr->index])); + *val = ADT7X10_REG_TO_TEMP(data, data->temp[index]); + + return 0; } -static ssize_t adt7x10_temp_store(struct device *dev, - struct device_attribute *da, - const char *buf, size_t count) +static int adt7x10_temp_write(struct adt7x10_data *data, unsigned int nr, + long temp) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(da); - struct adt7x10_data *data = dev_get_drvdata(dev); - int nr = attr->index; - long temp; + struct device *dev = data->bus_dev; int ret; - ret = kstrtol(buf, 10, &temp); - if (ret) - return ret; - mutex_lock(&data->update_lock); data->temp[nr] = ADT7X10_TEMP_TO_REG(temp); ret = adt7x10_write_word(dev, ADT7X10_REG_TEMP[nr], data->temp[nr]); - if (ret) - count = ret; mutex_unlock(&data->update_lock); - return count; + + return ret; } -static ssize_t adt7x10_t_hyst_show(struct device *dev, - struct device_attribute *da, char *buf) +static int adt7x10_hyst_read(struct adt7x10_data *data, unsigned int nr, + long *val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(da); - struct adt7x10_data *data = dev_get_drvdata(dev); - int nr = attr->index; int hyst; hyst = (data->hyst & ADT7X10_T_HYST_MASK) * 1000; @@ -276,85 +260,127 @@ static ssize_t adt7x10_t_hyst_show(struct device *dev, */ if (nr == 2) /* min has positive offset, others have negative */ hyst = -hyst; - return sprintf(buf, "%d\n", - ADT7X10_REG_TO_TEMP(data, data->temp[nr]) - hyst); + + *val = ADT7X10_REG_TO_TEMP(data, data->temp[nr]) - hyst; + + return 0; } -static ssize_t adt7x10_t_hyst_store(struct device *dev, - struct device_attribute *da, - const char *buf, size_t count) +static int adt7x10_hyst_write(struct adt7x10_data *data, long hyst) { - struct adt7x10_data *data = dev_get_drvdata(dev); - int limit, ret; - long hyst; + struct device *dev = data->bus_dev; + int limit; - ret = kstrtol(buf, 10, &hyst); - if (ret) - return ret; /* convert absolute hysteresis value to a 4 bit delta value */ limit = ADT7X10_REG_TO_TEMP(data, data->temp[1]); hyst = clamp_val(hyst, ADT7X10_TEMP_MIN, ADT7X10_TEMP_MAX); data->hyst = clamp_val(DIV_ROUND_CLOSEST(limit - hyst, 1000), - 0, ADT7X10_T_HYST_MASK); - ret = adt7x10_write_byte(dev, ADT7X10_T_HYST, data->hyst); - if (ret) - return ret; - - return count; + 0, ADT7X10_T_HYST_MASK); + return adt7x10_write_byte(dev, ADT7X10_T_HYST, data->hyst); } -static ssize_t adt7x10_alarm_show(struct device *dev, - struct device_attribute *da, char *buf) +static int adt7x10_alarm_read(struct adt7x10_data *data, unsigned int index, + long *val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + struct device *dev = data->bus_dev; int ret; ret = adt7x10_read_byte(dev, ADT7X10_STATUS); if (ret < 0) return ret; - return sprintf(buf, "%d\n", !!(ret & attr->index)); + *val = !!(ret & index); + + return 0; +} + +static umode_t adt7x10_is_visible(const void *data, + enum hwmon_sensor_types type, + u32 attr, int channel) +{ + umode_t mode = 0444; + + switch (attr) { + case hwmon_temp_max: + case hwmon_temp_min: + case hwmon_temp_crit: + case hwmon_temp_max_hyst: + mode |= 0200; + break; + default: + break; + } + + return mode; +} + +static int adt7x10_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) +{ + struct adt7x10_data *data = dev_get_drvdata(dev); + + switch (attr) { + case hwmon_temp_input: + return adt7x10_temp_read(data, 0, val); + case hwmon_temp_max: + return adt7x10_temp_read(data, 1, val); + case hwmon_temp_min: + return adt7x10_temp_read(data, 2, val); + case hwmon_temp_crit: + return adt7x10_temp_read(data, 3, val); + case hwmon_temp_max_hyst: + return adt7x10_hyst_read(data, 1, val); + case hwmon_temp_min_hyst: + return adt7x10_hyst_read(data, 2, val); + case hwmon_temp_crit_hyst: + return adt7x10_hyst_read(data, 3, val); + case hwmon_temp_min_alarm: + return adt7x10_alarm_read(data, ADT7X10_STAT_T_LOW, val); + case hwmon_temp_max_alarm: + return adt7x10_alarm_read(data, ADT7X10_STAT_T_HIGH, val); + case hwmon_temp_crit_alarm: + return adt7x10_alarm_read(data, ADT7X10_STAT_T_CRIT, val); + default: + return -EOPNOTSUPP; + } } -static ssize_t name_show(struct device *dev, struct device_attribute *da, - char *buf) +static int adt7x10_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) { struct adt7x10_data *data = dev_get_drvdata(dev); - return sprintf(buf, "%s\n", data->name); + switch (attr) { + case hwmon_temp_max: + return adt7x10_temp_write(data, 1, val); + case hwmon_temp_min: + return adt7x10_temp_write(data, 2, val); + case hwmon_temp_crit: + return adt7x10_temp_write(data, 3, val); + case hwmon_temp_max_hyst: + return adt7x10_hyst_write(data, val); + default: + return -EOPNOTSUPP; + } } -static SENSOR_DEVICE_ATTR_RO(temp1_input, adt7x10_temp, 0); -static SENSOR_DEVICE_ATTR_RW(temp1_max, adt7x10_temp, 1); -static SENSOR_DEVICE_ATTR_RW(temp1_min, adt7x10_temp, 2); -static SENSOR_DEVICE_ATTR_RW(temp1_crit, adt7x10_temp, 3); -static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, adt7x10_t_hyst, 1); -static SENSOR_DEVICE_ATTR_RO(temp1_min_hyst, adt7x10_t_hyst, 2); -static SENSOR_DEVICE_ATTR_RO(temp1_crit_hyst, adt7x10_t_hyst, 3); -static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, adt7x10_alarm, - ADT7X10_STAT_T_LOW); -static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, adt7x10_alarm, - ADT7X10_STAT_T_HIGH); -static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, adt7x10_alarm, - ADT7X10_STAT_T_CRIT); -static DEVICE_ATTR_RO(name); - -static struct attribute *adt7x10_attributes[] = { - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp1_max.dev_attr.attr, - &sensor_dev_attr_temp1_min.dev_attr.attr, - &sensor_dev_attr_temp1_crit.dev_attr.attr, - &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp1_min_hyst.dev_attr.attr, - &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, - &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, - &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, - NULL +static const struct hwmon_channel_info *adt7x10_info[] = { + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MIN | + HWMON_T_CRIT | HWMON_T_MAX_HYST | HWMON_T_MIN_HYST | + HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM), + NULL, +}; + +static const struct hwmon_ops adt7x10_hwmon_ops = { + .is_visible = adt7x10_is_visible, + .read = adt7x10_read, + .write = adt7x10_write, }; -static const struct attribute_group adt7x10_group = { - .attrs = adt7x10_attributes, +static const struct hwmon_chip_info adt7x10_chip_info = { + .ops = &adt7x10_hwmon_ops, + .info = adt7x10_info, }; static void adt7x10_restore_config(void *private) @@ -372,6 +398,7 @@ int adt7x10_probe(struct device *dev, const char *name, int irq, const struct adt7x10_ops *ops) { struct adt7x10_data *data; + struct device *hdev; int ret; data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); @@ -379,7 +406,6 @@ int adt7x10_probe(struct device *dev, const char *name, int irq, return -ENOMEM; data->ops = ops; - data->name = name; data->bus_dev = dev; dev_set_drvdata(dev, data); @@ -416,26 +442,11 @@ int adt7x10_probe(struct device *dev, const char *name, int irq, if (ret) return ret; - /* Register sysfs hooks */ - ret = sysfs_create_group(&dev->kobj, &adt7x10_group); - if (ret) + hdev = devm_hwmon_device_register_with_info(dev, name, data, + &adt7x10_chip_info, NULL); + if (IS_ERR(hdev)) { + ret = PTR_ERR(hdev); return ret; - - /* - * The I2C device will already have it's own 'name' attribute, but for - * the SPI device we need to register it. name will only be non NULL if - * the device doesn't register the 'name' attribute on its own. - */ - if (name) { - ret = device_create_file(dev, &dev_attr_name); - if (ret) - goto exit_remove; - } - - data->hwmon_dev = hwmon_device_register(dev); - if (IS_ERR(data->hwmon_dev)) { - ret = PTR_ERR(data->hwmon_dev); - goto exit_remove_name; } if (irq > 0) { @@ -443,33 +454,17 @@ int adt7x10_probe(struct device *dev, const char *name, int irq, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, dev_name(dev), dev); if (ret) - goto exit_hwmon_device_unregister; + return ret; } return 0; - -exit_hwmon_device_unregister: - hwmon_device_unregister(data->hwmon_dev); -exit_remove_name: - if (name) - device_remove_file(dev, &dev_attr_name); -exit_remove: - sysfs_remove_group(&dev->kobj, &adt7x10_group); - return ret; } EXPORT_SYMBOL_GPL(adt7x10_probe); void adt7x10_remove(struct device *dev, int irq) { - struct adt7x10_data *data = dev_get_drvdata(dev); - if (irq > 0) free_irq(irq, dev); - - hwmon_device_unregister(data->hwmon_dev); - if (data->name) - device_remove_file(dev, &dev_attr_name); - sysfs_remove_group(&dev->kobj, &adt7x10_group); } EXPORT_SYMBOL_GPL(adt7x10_remove);