[patch v2 3/3] platform/x86: mlxcpld-hotplug: driver removing

[Vadim Pasternak <vadimp@mellanox.com>]

It removes mlxcpld-hotplug.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
 MAINTAINERS                                   |   7 -
 drivers/platform/x86/mlxcpld-hotplug.c        | 515 --------------------------
 include/linux/platform_data/mlxcpld-hotplug.h |  99 -----
 3 files changed, 621 deletions(-)
 delete mode 100644 drivers/platform/x86/mlxcpld-hotplug.c
 delete mode 100644 include/linux/platform_data/mlxcpld-hotplug.h

diff --git a/MAINTAINERS b/MAINTAINERS
index ccc7fa3..1944239 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8579,13 +8579,6 @@ L:      platform-driver-x86@vger.kernel.org
 S:      Supported
 F:      drivers/platform/x86/mlx-platform.c
 
-MELLANOX MLX CPLD HOTPLUG DRIVER
-M:	Vadim Pasternak <vadimp@mellanox.com>
-L:	platform-driver-x86@vger.kernel.org
-S:	Supported
-F:	drivers/platform/x86/mlxcpld-hotplug.c
-F:	include/linux/platform_data/mlxcpld-hotplug.h
-
 SOFT-ROCE DRIVER (rxe)
 M:	Moni Shoua <monis@mellanox.com>
 L:	linux-rdma@vger.kernel.org
diff --git a/drivers/platform/x86/mlxcpld-hotplug.c b/drivers/platform/x86/mlxcpld-hotplug.c
deleted file mode 100644
index aff3686..0000000
--- a/drivers/platform/x86/mlxcpld-hotplug.c
+++ /dev/null
@@ -1,515 +0,0 @@
-/*
- * drivers/platform/x86/mlxcpld-hotplug.c
- * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
- * Copyright (c) 2016 Vadim Pasternak <vadimp@mellanox.com>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the names of the copyright holders nor the names of its
- *    contributors may be used to endorse or promote products derived from
- *    this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <linux/bitops.h>
-#include <linux/device.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/platform_data/mlxcpld-hotplug.h>
-#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/wait.h>
-#include <linux/workqueue.h>
-
-/* Offset of event and mask registers from status register */
-#define MLXCPLD_HOTPLUG_EVENT_OFF	1
-#define MLXCPLD_HOTPLUG_MASK_OFF	2
-#define MLXCPLD_HOTPLUG_AGGR_MASK_OFF	1
-
-#define MLXCPLD_HOTPLUG_ATTRS_NUM	8
-
-/**
- * enum mlxcpld_hotplug_attr_type - sysfs attributes for hotplug events:
- * @MLXCPLD_HOTPLUG_ATTR_TYPE_PSU: power supply unit attribute;
- * @MLXCPLD_HOTPLUG_ATTR_TYPE_PWR: power cable attribute;
- * @MLXCPLD_HOTPLUG_ATTR_TYPE_FAN: FAN drawer attribute;
- */
-enum mlxcpld_hotplug_attr_type {
-	MLXCPLD_HOTPLUG_ATTR_TYPE_PSU,
-	MLXCPLD_HOTPLUG_ATTR_TYPE_PWR,
-	MLXCPLD_HOTPLUG_ATTR_TYPE_FAN,
-};
-
-/**
- * struct mlxcpld_hotplug_priv_data - platform private data:
- * @irq: platform interrupt number;
- * @pdev: platform device;
- * @plat: platform data;
- * @hwmon: hwmon device;
- * @mlxcpld_hotplug_attr: sysfs attributes array;
- * @mlxcpld_hotplug_dev_attr: sysfs sensor device attribute array;
- * @group: sysfs attribute group;
- * @groups: list of sysfs attribute group for hwmon registration;
- * @dwork: delayed work template;
- * @lock: spin lock;
- * @aggr_cache: last value of aggregation register status;
- * @psu_cache: last value of PSU register status;
- * @pwr_cache: last value of power register status;
- * @fan_cache: last value of FAN register status;
- */
-struct mlxcpld_hotplug_priv_data {
-	int irq;
-	struct platform_device *pdev;
-	struct mlxcpld_hotplug_platform_data *plat;
-	struct device *hwmon;
-	struct attribute *mlxcpld_hotplug_attr[MLXCPLD_HOTPLUG_ATTRS_NUM + 1];
-	struct sensor_device_attribute_2
-			mlxcpld_hotplug_dev_attr[MLXCPLD_HOTPLUG_ATTRS_NUM];
-	struct attribute_group group;
-	const struct attribute_group *groups[2];
-	struct delayed_work dwork;
-	spinlock_t lock;
-	u8 aggr_cache;
-	u8 psu_cache;
-	u8 pwr_cache;
-	u8 fan_cache;
-};
-
-static ssize_t mlxcpld_hotplug_attr_show(struct device *dev,
-					 struct device_attribute *attr,
-					 char *buf)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct mlxcpld_hotplug_priv_data *priv = platform_get_drvdata(pdev);
-	int index = to_sensor_dev_attr_2(attr)->index;
-	int nr = to_sensor_dev_attr_2(attr)->nr;
-	u8 reg_val = 0;
-
-	switch (nr) {
-	case MLXCPLD_HOTPLUG_ATTR_TYPE_PSU:
-		/* Bit = 0 : PSU is present. */
-		reg_val = !!!(inb(priv->plat->psu_reg_offset) & BIT(index));
-		break;
-
-	case MLXCPLD_HOTPLUG_ATTR_TYPE_PWR:
-		/* Bit = 1 : power cable is attached. */
-		reg_val = !!(inb(priv->plat->pwr_reg_offset) & BIT(index %
-						priv->plat->pwr_count));
-		break;
-
-	case MLXCPLD_HOTPLUG_ATTR_TYPE_FAN:
-		/* Bit = 0 : FAN is present. */
-		reg_val = !!!(inb(priv->plat->fan_reg_offset) & BIT(index %
-						priv->plat->fan_count));
-		break;
-	}
-
-	return sprintf(buf, "%u\n", reg_val);
-}
-
-#define PRIV_ATTR(i) priv->mlxcpld_hotplug_attr[i]
-#define PRIV_DEV_ATTR(i) priv->mlxcpld_hotplug_dev_attr[i]
-static int mlxcpld_hotplug_attr_init(struct mlxcpld_hotplug_priv_data *priv)
-{
-	int num_attrs = priv->plat->psu_count + priv->plat->pwr_count +
-			priv->plat->fan_count;
-	int i;
-
-	priv->group.attrs = devm_kzalloc(&priv->pdev->dev, num_attrs *
-					 sizeof(struct attribute *),
-					 GFP_KERNEL);
-	if (!priv->group.attrs)
-		return -ENOMEM;
-
-	for (i = 0; i < num_attrs; i++) {
-		PRIV_ATTR(i) = &PRIV_DEV_ATTR(i).dev_attr.attr;
-
-		if (i < priv->plat->psu_count) {
-			PRIV_ATTR(i)->name = devm_kasprintf(&priv->pdev->dev,
-						GFP_KERNEL, "psu%u", i + 1);
-			PRIV_DEV_ATTR(i).nr = MLXCPLD_HOTPLUG_ATTR_TYPE_PSU;
-		} else if (i < priv->plat->psu_count + priv->plat->pwr_count) {
-			PRIV_ATTR(i)->name = devm_kasprintf(&priv->pdev->dev,
-						GFP_KERNEL, "pwr%u", i %
-						priv->plat->pwr_count + 1);
-			PRIV_DEV_ATTR(i).nr = MLXCPLD_HOTPLUG_ATTR_TYPE_PWR;
-		} else {
-			PRIV_ATTR(i)->name = devm_kasprintf(&priv->pdev->dev,
-						GFP_KERNEL, "fan%u", i %
-						priv->plat->fan_count + 1);
-			PRIV_DEV_ATTR(i).nr = MLXCPLD_HOTPLUG_ATTR_TYPE_FAN;
-		}
-
-		if (!PRIV_ATTR(i)->name) {
-			dev_err(&priv->pdev->dev, "Memory allocation failed for sysfs attribute %d.\n",
-				i + 1);
-			return -ENOMEM;
-		}
-
-		PRIV_DEV_ATTR(i).dev_attr.attr.name = PRIV_ATTR(i)->name;
-		PRIV_DEV_ATTR(i).dev_attr.attr.mode = S_IRUGO;
-		PRIV_DEV_ATTR(i).dev_attr.show = mlxcpld_hotplug_attr_show;
-		PRIV_DEV_ATTR(i).index = i;
-		sysfs_attr_init(&PRIV_DEV_ATTR(i).dev_attr.attr);
-	}
-
-	priv->group.attrs = priv->mlxcpld_hotplug_attr;
-	priv->groups[0] = &priv->group;
-	priv->groups[1] = NULL;
-
-	return 0;
-}
-
-static int mlxcpld_hotplug_device_create(struct device *dev,
-					 struct mlxcpld_hotplug_device *item)
-{
-	item->adapter = i2c_get_adapter(item->bus);
-	if (!item->adapter) {
-		dev_err(dev, "Failed to get adapter for bus %d\n",
-			item->bus);
-		return -EFAULT;
-	}
-
-	item->client = i2c_new_device(item->adapter, &item->brdinfo);
-	if (!item->client) {
-		dev_err(dev, "Failed to create client %s at bus %d at addr 0x%02x\n",
-			item->brdinfo.type, item->bus, item->brdinfo.addr);
-		i2c_put_adapter(item->adapter);
-		item->adapter = NULL;
-		return -EFAULT;
-	}
-
-	return 0;
-}
-
-static void mlxcpld_hotplug_device_destroy(struct mlxcpld_hotplug_device *item)
-{
-	if (item->client) {
-		i2c_unregister_device(item->client);
-		item->client = NULL;
-	}
-
-	if (item->adapter) {
-		i2c_put_adapter(item->adapter);
-		item->adapter = NULL;
-	}
-}
-
-static inline void
-mlxcpld_hotplug_work_helper(struct device *dev,
-			    struct mlxcpld_hotplug_device *item, u8 is_inverse,
-			    u16 offset, u8 mask, u8 *cache)
-{
-	u8 val, asserted;
-	int bit;
-
-	/* Mask event. */
-	outb(0, offset + MLXCPLD_HOTPLUG_MASK_OFF);
-	/* Read status. */
-	val = inb(offset) & mask;
-	asserted = *cache ^ val;
-	*cache = val;
-
-	/*
-	 * Validate if item related to received signal type is valid.
-	 * It should never happen, excepted the situation when some
-	 * piece of hardware is broken. In such situation just produce
-	 * error message and return. Caller must continue to handle the
-	 * signals from other devices if any.
-	 */
-	if (unlikely(!item)) {
-		dev_err(dev, "False signal is received: register at offset 0x%02x, mask 0x%02x.\n",
-			offset, mask);
-		return;
-	}
-
-	for_each_set_bit(bit, (unsigned long *)&asserted, 8) {
-		if (val & BIT(bit)) {
-			if (is_inverse)
-				mlxcpld_hotplug_device_destroy(item + bit);
-			else
-				mlxcpld_hotplug_device_create(dev, item + bit);
-		} else {
-			if (is_inverse)
-				mlxcpld_hotplug_device_create(dev, item + bit);
-			else
-				mlxcpld_hotplug_device_destroy(item + bit);
-		}
-	}
-
-	/* Acknowledge event. */
-	outb(0, offset + MLXCPLD_HOTPLUG_EVENT_OFF);
-	/* Unmask event. */
-	outb(mask, offset + MLXCPLD_HOTPLUG_MASK_OFF);
-}
-
-/*
- * mlxcpld_hotplug_work_handler - performs traversing of CPLD interrupt
- * registers according to the below hierarchy schema:
- *
- *                   Aggregation registers (status/mask)
- * PSU registers:           *---*
- * *-----------------*      |   |
- * |status/event/mask|----->| * |
- * *-----------------*      |   |
- * Power registers:         |   |
- * *-----------------*      |   |
- * |status/event/mask|----->| * |---> CPU
- * *-----------------*      |   |
- * FAN registers:
- * *-----------------*      |   |
- * |status/event/mask|----->| * |
- * *-----------------*      |   |
- *                          *---*
- * In case some system changed are detected: FAN in/out, PSU in/out, power
- * cable attached/detached, relevant device is created or destroyed.
- */
-static void mlxcpld_hotplug_work_handler(struct work_struct *work)
-{
-	struct mlxcpld_hotplug_priv_data *priv = container_of(work,
-				struct mlxcpld_hotplug_priv_data, dwork.work);
-	u8 val, aggr_asserted;
-	unsigned long flags;
-
-	/* Mask aggregation event. */
-	outb(0, priv->plat->top_aggr_offset + MLXCPLD_HOTPLUG_AGGR_MASK_OFF);
-	/* Read aggregation status. */
-	val = inb(priv->plat->top_aggr_offset) & priv->plat->top_aggr_mask;
-	aggr_asserted = priv->aggr_cache ^ val;
-	priv->aggr_cache = val;
-
-	/* Handle PSU configuration changes. */
-	if (aggr_asserted & priv->plat->top_aggr_psu_mask)
-		mlxcpld_hotplug_work_helper(&priv->pdev->dev, priv->plat->psu,
-					    1, priv->plat->psu_reg_offset,
-					    priv->plat->psu_mask,
-					    &priv->psu_cache);
-
-	/* Handle power cable configuration changes. */
-	if (aggr_asserted & priv->plat->top_aggr_pwr_mask)
-		mlxcpld_hotplug_work_helper(&priv->pdev->dev, priv->plat->pwr,
-					    0, priv->plat->pwr_reg_offset,
-					    priv->plat->pwr_mask,
-					    &priv->pwr_cache);
-
-	/* Handle FAN configuration changes. */
-	if (aggr_asserted & priv->plat->top_aggr_fan_mask)
-		mlxcpld_hotplug_work_helper(&priv->pdev->dev, priv->plat->fan,
-					    1, priv->plat->fan_reg_offset,
-					    priv->plat->fan_mask,
-					    &priv->fan_cache);
-
-	if (aggr_asserted) {
-		spin_lock_irqsave(&priv->lock, flags);
-
-		/*
-		 * It is possible, that some signals have been inserted, while
-		 * interrupt has been masked by mlxcpld_hotplug_work_handler.
-		 * In this case such signals will be missed. In order to handle
-		 * these signals delayed work is canceled and work task
-		 * re-scheduled for immediate execution. It allows to handle
-		 * missed signals, if any. In other case work handler just
-		 * validates that no new signals have been received during
-		 * masking.
-		 */
-		cancel_delayed_work(&priv->dwork);
-		schedule_delayed_work(&priv->dwork, 0);
-
-		spin_unlock_irqrestore(&priv->lock, flags);
-
-		return;
-	}
-
-	/* Unmask aggregation event (no need acknowledge). */
-	outb(priv->plat->top_aggr_mask, priv->plat->top_aggr_offset +
-						MLXCPLD_HOTPLUG_AGGR_MASK_OFF);
-}
-
-static void mlxcpld_hotplug_set_irq(struct mlxcpld_hotplug_priv_data *priv)
-{
-	/* Clear psu presense event. */
-	outb(0, priv->plat->psu_reg_offset + MLXCPLD_HOTPLUG_EVENT_OFF);
-	/* Set psu initial status as mask and unmask psu event. */
-	priv->psu_cache = priv->plat->psu_mask;
-	outb(priv->plat->psu_mask, priv->plat->psu_reg_offset +
-						MLXCPLD_HOTPLUG_MASK_OFF);
-
-	/* Clear power cable event. */
-	outb(0, priv->plat->pwr_reg_offset + MLXCPLD_HOTPLUG_EVENT_OFF);
-	/* Keep power initial status as zero and unmask power event. */
-	outb(priv->plat->pwr_mask, priv->plat->pwr_reg_offset +
-						MLXCPLD_HOTPLUG_MASK_OFF);
-
-	/* Clear fan presense event. */
-	outb(0, priv->plat->fan_reg_offset + MLXCPLD_HOTPLUG_EVENT_OFF);
-	/* Set fan initial status as mask and unmask fan event. */
-	priv->fan_cache = priv->plat->fan_mask;
-	outb(priv->plat->fan_mask, priv->plat->fan_reg_offset +
-						MLXCPLD_HOTPLUG_MASK_OFF);
-
-	/* Keep aggregation initial status as zero and unmask events. */
-	outb(priv->plat->top_aggr_mask, priv->plat->top_aggr_offset +
-						MLXCPLD_HOTPLUG_AGGR_MASK_OFF);
-
-	/* Invoke work handler for initializing hot plug devices setting. */
-	mlxcpld_hotplug_work_handler(&priv->dwork.work);
-
-	enable_irq(priv->irq);
-}
-
-static void mlxcpld_hotplug_unset_irq(struct mlxcpld_hotplug_priv_data *priv)
-{
-	int i;
-
-	disable_irq(priv->irq);
-	cancel_delayed_work_sync(&priv->dwork);
-
-	/* Mask aggregation event. */
-	outb(0, priv->plat->top_aggr_offset + MLXCPLD_HOTPLUG_AGGR_MASK_OFF);
-
-	/* Mask psu presense event. */
-	outb(0, priv->plat->psu_reg_offset + MLXCPLD_HOTPLUG_MASK_OFF);
-	/* Clear psu presense event. */
-	outb(0, priv->plat->psu_reg_offset + MLXCPLD_HOTPLUG_EVENT_OFF);
-
-	/* Mask power cable event. */
-	outb(0, priv->plat->pwr_reg_offset + MLXCPLD_HOTPLUG_MASK_OFF);
-	/* Clear power cable event. */
-	outb(0, priv->plat->pwr_reg_offset + MLXCPLD_HOTPLUG_EVENT_OFF);
-
-	/* Mask fan presense event. */
-	outb(0, priv->plat->fan_reg_offset + MLXCPLD_HOTPLUG_MASK_OFF);
-	/* Clear fan presense event. */
-	outb(0, priv->plat->fan_reg_offset + MLXCPLD_HOTPLUG_EVENT_OFF);
-
-	/* Remove all the attached devices. */
-	for (i = 0; i < priv->plat->psu_count; i++)
-		mlxcpld_hotplug_device_destroy(priv->plat->psu + i);
-
-	for (i = 0; i < priv->plat->pwr_count; i++)
-		mlxcpld_hotplug_device_destroy(priv->plat->pwr + i);
-
-	for (i = 0; i < priv->plat->fan_count; i++)
-		mlxcpld_hotplug_device_destroy(priv->plat->fan + i);
-}
-
-static irqreturn_t mlxcpld_hotplug_irq_handler(int irq, void *dev)
-{
-	struct mlxcpld_hotplug_priv_data *priv =
-				(struct mlxcpld_hotplug_priv_data *)dev;
-
-	/* Schedule work task for immediate execution.*/
-	schedule_delayed_work(&priv->dwork, 0);
-
-	return IRQ_HANDLED;
-}
-
-static int mlxcpld_hotplug_probe(struct platform_device *pdev)
-{
-	struct mlxcpld_hotplug_platform_data *pdata;
-	struct mlxcpld_hotplug_priv_data *priv;
-	int err;
-
-	pdata = dev_get_platdata(&pdev->dev);
-	if (!pdata) {
-		dev_err(&pdev->dev, "Failed to get platform data.\n");
-		return -EINVAL;
-	}
-
-	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
-
-	priv->pdev = pdev;
-	priv->plat = pdata;
-
-	priv->irq = platform_get_irq(pdev, 0);
-	if (priv->irq < 0) {
-		dev_err(&pdev->dev, "Failed to get platform irq: %d\n",
-			priv->irq);
-		return priv->irq;
-	}
-
-	err = devm_request_irq(&pdev->dev, priv->irq,
-				mlxcpld_hotplug_irq_handler, 0, pdev->name,
-				priv);
-	if (err) {
-		dev_err(&pdev->dev, "Failed to request irq: %d\n", err);
-		return err;
-	}
-	disable_irq(priv->irq);
-
-	INIT_DELAYED_WORK(&priv->dwork, mlxcpld_hotplug_work_handler);
-	spin_lock_init(&priv->lock);
-
-	err = mlxcpld_hotplug_attr_init(priv);
-	if (err) {
-		dev_err(&pdev->dev, "Failed to allocate attributes: %d\n", err);
-		return err;
-	}
-
-	priv->hwmon = devm_hwmon_device_register_with_groups(&pdev->dev,
-					"mlxcpld_hotplug", priv, priv->groups);
-	if (IS_ERR(priv->hwmon)) {
-		dev_err(&pdev->dev, "Failed to register hwmon device %ld\n",
-			PTR_ERR(priv->hwmon));
-		return PTR_ERR(priv->hwmon);
-	}
-
-	platform_set_drvdata(pdev, priv);
-
-	/* Perform initial interrupts setup. */
-	mlxcpld_hotplug_set_irq(priv);
-
-	return 0;
-}
-
-static int mlxcpld_hotplug_remove(struct platform_device *pdev)
-{
-	struct mlxcpld_hotplug_priv_data *priv = platform_get_drvdata(pdev);
-
-	/* Clean interrupts setup. */
-	mlxcpld_hotplug_unset_irq(priv);
-
-	return 0;
-}
-
-static struct platform_driver mlxcpld_hotplug_driver = {
-	.driver = {
-		.name = "mlxcpld-hotplug",
-	},
-	.probe = mlxcpld_hotplug_probe,
-	.remove = mlxcpld_hotplug_remove,
-};
-
-module_platform_driver(mlxcpld_hotplug_driver);
-
-MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>");
-MODULE_DESCRIPTION("Mellanox CPLD hotplug platform driver");
-MODULE_LICENSE("Dual BSD/GPL");
-MODULE_ALIAS("platform:mlxcpld-hotplug");
diff --git a/include/linux/platform_data/mlxcpld-hotplug.h b/include/linux/platform_data/mlxcpld-hotplug.h
deleted file mode 100644
index e4cfcff..0000000
--- a/include/linux/platform_data/mlxcpld-hotplug.h
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
- * include/linux/platform_data/mlxcpld-hotplug.h
- * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
- * Copyright (c) 2016 Vadim Pasternak <vadimp@mellanox.com>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the names of the copyright holders nor the names of its
- *    contributors may be used to endorse or promote products derived from
- *    this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef __LINUX_PLATFORM_DATA_MLXCPLD_HOTPLUG_H
-#define __LINUX_PLATFORM_DATA_MLXCPLD_HOTPLUG_H
-
-/**
- * struct mlxcpld_hotplug_device - I2C device data:
- * @adapter: I2C device adapter;
- * @client: I2C device client;
- * @brdinfo: device board information;
- * @bus: I2C bus, where device is attached;
- *
- * Structure represents I2C hotplug device static data (board topology) and
- * dynamic data (related kernel objects handles).
- */
-struct mlxcpld_hotplug_device {
-	struct i2c_adapter *adapter;
-	struct i2c_client *client;
-	struct i2c_board_info brdinfo;
-	u16 bus;
-};
-
-/**
- * struct mlxcpld_hotplug_platform_data - device platform data:
- * @top_aggr_offset: offset of top aggregation interrupt register;
- * @top_aggr_mask: top aggregation interrupt common mask;
- * @top_aggr_psu_mask: top aggregation interrupt PSU mask;
- * @psu_reg_offset: offset of PSU interrupt register;
- * @psu_mask: PSU interrupt mask;
- * @psu_count: number of equipped replaceable PSUs;
- * @psu: pointer to PSU devices data array;
- * @top_aggr_pwr_mask: top aggregation interrupt power mask;
- * @pwr_reg_offset: offset of power interrupt register
- * @pwr_mask: power interrupt mask;
- * @pwr_count: number of power sources;
- * @pwr: pointer to power devices data array;
- * @top_aggr_fan_mask: top aggregation interrupt FAN mask;
- * @fan_reg_offset: offset of FAN interrupt register;
- * @fan_mask: FAN interrupt mask;
- * @fan_count: number of equipped replaceable FANs;
- * @fan: pointer to FAN devices data array;
- *
- * Structure represents board platform data, related to system hotplug events,
- * like FAN, PSU, power cable insertion and removing. This data provides the
- * number of hot-pluggable devices and hardware description for event handling.
- */
-struct mlxcpld_hotplug_platform_data {
-	u16 top_aggr_offset;
-	u8 top_aggr_mask;
-	u8 top_aggr_psu_mask;
-	u16 psu_reg_offset;
-	u8 psu_mask;
-	u8 psu_count;
-	struct mlxcpld_hotplug_device *psu;
-	u8 top_aggr_pwr_mask;
-	u16 pwr_reg_offset;
-	u8 pwr_mask;
-	u8 pwr_count;
-	struct mlxcpld_hotplug_device *pwr;
-	u8 top_aggr_fan_mask;
-	u16 fan_reg_offset;
-	u8 fan_mask;
-	u8 fan_count;
-	struct mlxcpld_hotplug_device *fan;
-};
-
-#endif /* __LINUX_PLATFORM_DATA_MLXCPLD_HOTPLUG_H */
-- 
2.1.4