From 4982327ff6755377a8a66e84113f496f3a6c53bc Mon Sep 17 00:00:00 2001 From: Stefan Brüns Date: Thu, 9 Nov 2017 23:44:34 +0100 Subject: Input: add KEY_ROTATE_LOCK_TOGGLE MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The key has the same use as the SW_ROTATE_LOCK, but is used on devices where the state is not tracked by the hardware but has to be handled in software. Signed-off-by: Stefan Brüns Signed-off-by: Darren Hart (VMware) --- include/uapi/linux/input-event-codes.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h index 061fa62958a2..53fbae27b280 100644 --- a/include/uapi/linux/input-event-codes.h +++ b/include/uapi/linux/input-event-codes.h @@ -594,6 +594,7 @@ #define BTN_DPAD_RIGHT 0x223 #define KEY_ALS_TOGGLE 0x230 /* Ambient light sensor */ +#define KEY_ROTATE_LOCK_TOGGLE 0x231 /* Display rotation lock */ #define KEY_BUTTONCONFIG 0x240 /* AL Button Configuration */ #define KEY_TASKMANAGER 0x241 /* AL Task/Project Manager */ -- cgit v1.2.3 From 1f976f6978bf6156ce822eb279ac86c519b10329 Mon Sep 17 00:00:00 2001 From: Vadim Pasternak Date: Wed, 17 Jan 2018 18:21:53 +0000 Subject: platform/x86: Move Mellanox platform hotplug driver to platform/mellanox In preparation for making the hotplug driver build for different architectures, move mlxcpld-hotplug.c to platform/mellanox and the header to include/linux/platform_data as mlxreg.h to reflect the new interface changes to come. Replace references to CPLD with REG throughout the files, consistent with the new name. Signed-off-by: Vadim Pasternak Acked-by: Andy Shevchenko [dvhart: update copyright, rewrite commit message] Signed-off-by: Darren Hart (VMware) --- MAINTAINERS | 7 +- drivers/platform/Kconfig | 2 + drivers/platform/Makefile | 1 + drivers/platform/mellanox/Kconfig | 25 ++ drivers/platform/mellanox/Makefile | 6 + drivers/platform/mellanox/mlxreg-hotplug.c | 514 +++++++++++++++++++++++++ drivers/platform/x86/Kconfig | 8 - drivers/platform/x86/Makefile | 1 - drivers/platform/x86/mlx-platform.c | 18 +- drivers/platform/x86/mlxcpld-hotplug.c | 515 -------------------------- include/linux/platform_data/mlxcpld-hotplug.h | 99 ----- include/linux/platform_data/mlxreg.h | 98 +++++ 12 files changed, 659 insertions(+), 635 deletions(-) create mode 100644 drivers/platform/mellanox/Kconfig create mode 100644 drivers/platform/mellanox/Makefile create mode 100644 drivers/platform/mellanox/mlxreg-hotplug.c delete mode 100644 drivers/platform/x86/mlxcpld-hotplug.c delete mode 100644 include/linux/platform_data/mlxcpld-hotplug.h create mode 100644 include/linux/platform_data/mlxreg.h (limited to 'include') diff --git a/MAINTAINERS b/MAINTAINERS index bc4d77695918..c07e1144688a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8860,12 +8860,13 @@ W: http://www.mellanox.com Q: http://patchwork.ozlabs.org/project/netdev/list/ F: drivers/net/ethernet/mellanox/mlxfw/ -MELLANOX MLX CPLD HOTPLUG DRIVER +MELLANOX HARDWARE PLATFORM SUPPORT +M: Andy Shevchenko +M: Darren Hart M: Vadim Pasternak L: platform-driver-x86@vger.kernel.org S: Supported -F: drivers/platform/x86/mlxcpld-hotplug.c -F: include/linux/platform_data/mlxcpld-hotplug.h +F: drivers/platform/mellanox/ MELLANOX MLX4 core VPI driver M: Tariq Toukan diff --git a/drivers/platform/Kconfig b/drivers/platform/Kconfig index c11db8bceea1..d4c2e424a700 100644 --- a/drivers/platform/Kconfig +++ b/drivers/platform/Kconfig @@ -8,3 +8,5 @@ endif source "drivers/platform/goldfish/Kconfig" source "drivers/platform/chrome/Kconfig" + +source "drivers/platform/mellanox/Kconfig" diff --git a/drivers/platform/Makefile b/drivers/platform/Makefile index d3a6630266a0..4b2ce58bcd9c 100644 --- a/drivers/platform/Makefile +++ b/drivers/platform/Makefile @@ -4,6 +4,7 @@ # obj-$(CONFIG_X86) += x86/ +obj-$(CONFIG_MELLANOX_PLATFORM) += mellanox/ obj-$(CONFIG_MIPS) += mips/ obj-$(CONFIG_OLPC) += olpc/ obj-$(CONFIG_GOLDFISH) += goldfish/ diff --git a/drivers/platform/mellanox/Kconfig b/drivers/platform/mellanox/Kconfig new file mode 100644 index 000000000000..d73529203327 --- /dev/null +++ b/drivers/platform/mellanox/Kconfig @@ -0,0 +1,25 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Platform support for Mellanox hardware +# + +menuconfig MELLANOX_PLATFORM + bool "Platform support for Mellanox hardware" + depends on X86 || COMPILE_TEST + ---help--- + Say Y here to get to see options for platform support for + Mellanox systems. This option alone does not add any kernel code. + + If you say N, all options in this submenu will be skipped and disabled. + +if MELLANOX_PLATFORM + +config MLXREG_HOTPLUG + tristate "Mellanox platform hotplug driver support" + depends on HWMON + depends on I2C + ---help--- + This driver handles hot-plug events for the power suppliers, power + cables and fans on the wide range Mellanox IB and Ethernet systems. + +endif # MELLANOX_PLATFORM diff --git a/drivers/platform/mellanox/Makefile b/drivers/platform/mellanox/Makefile new file mode 100644 index 000000000000..7c8385e497a8 --- /dev/null +++ b/drivers/platform/mellanox/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for linux/drivers/platform/mellanox +# Mellanox Platform-Specific Drivers +# +obj-$(CONFIG_MLXREG_HOTPLUG) += mlxreg-hotplug.o diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c new file mode 100644 index 000000000000..5cfc82ba34be --- /dev/null +++ b/drivers/platform/mellanox/mlxreg-hotplug.c @@ -0,0 +1,514 @@ +/* + * Copyright (c) 2016-2018 Mellanox Technologies. All rights reserved. + * Copyright (c) 2016-2018 Vadim Pasternak + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Offset of event and mask registers from status register */ +#define MLXREG_HOTPLUG_EVENT_OFF 1 +#define MLXREG_HOTPLUG_MASK_OFF 2 +#define MLXREG_HOTPLUG_AGGR_MASK_OFF 1 + +#define MLXREG_HOTPLUG_ATTRS_NUM 8 + +/** + * enum mlxreg_hotplug_attr_type - sysfs attributes for hotplug events: + * @MLXREG_HOTPLUG_ATTR_TYPE_PSU: power supply unit attribute; + * @MLXREG_HOTPLUG_ATTR_TYPE_PWR: power cable attribute; + * @MLXREG_HOTPLUG_ATTR_TYPE_FAN: FAN drawer attribute; + */ +enum mlxreg_hotplug_attr_type { + MLXREG_HOTPLUG_ATTR_TYPE_PSU, + MLXREG_HOTPLUG_ATTR_TYPE_PWR, + MLXREG_HOTPLUG_ATTR_TYPE_FAN, +}; + +/** + * struct mlxreg_hotplug_priv_data - platform private data: + * @irq: platform interrupt number; + * @pdev: platform device; + * @plat: platform data; + * @hwmon: hwmon device; + * @mlxreg_hotplug_attr: sysfs attributes array; + * @mlxreg_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 mlxreg_hotplug_priv_data { + int irq; + struct platform_device *pdev; + struct mlxreg_hotplug_platform_data *plat; + struct device *hwmon; + struct attribute *mlxreg_hotplug_attr[MLXREG_HOTPLUG_ATTRS_NUM + 1]; + struct sensor_device_attribute_2 + mlxreg_hotplug_dev_attr[MLXREG_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 mlxreg_hotplug_attr_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct platform_device *pdev = to_platform_device(dev); + struct mlxreg_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 MLXREG_HOTPLUG_ATTR_TYPE_PSU: + /* Bit = 0 : PSU is present. */ + reg_val = !!!(inb(priv->plat->psu_reg_offset) & BIT(index)); + break; + + case MLXREG_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 MLXREG_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->mlxreg_hotplug_attr[i] +#define PRIV_DEV_ATTR(i) priv->mlxreg_hotplug_dev_attr[i] +static int mlxreg_hotplug_attr_init(struct mlxreg_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 = MLXREG_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 = MLXREG_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 = MLXREG_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 = mlxreg_hotplug_attr_show; + PRIV_DEV_ATTR(i).index = i; + sysfs_attr_init(&PRIV_DEV_ATTR(i).dev_attr.attr); + } + + priv->group.attrs = priv->mlxreg_hotplug_attr; + priv->groups[0] = &priv->group; + priv->groups[1] = NULL; + + return 0; +} + +static int mlxreg_hotplug_device_create(struct device *dev, + struct mlxreg_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 mlxreg_hotplug_device_destroy(struct mlxreg_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 +mlxreg_hotplug_work_helper(struct device *dev, + struct mlxreg_hotplug_device *item, u8 is_inverse, + u16 offset, u8 mask, u8 *cache) +{ + u8 val, asserted; + int bit; + + /* Mask event. */ + outb(0, offset + MLXREG_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) + mlxreg_hotplug_device_destroy(item + bit); + else + mlxreg_hotplug_device_create(dev, item + bit); + } else { + if (is_inverse) + mlxreg_hotplug_device_create(dev, item + bit); + else + mlxreg_hotplug_device_destroy(item + bit); + } + } + + /* Acknowledge event. */ + outb(0, offset + MLXREG_HOTPLUG_EVENT_OFF); + /* Unmask event. */ + outb(mask, offset + MLXREG_HOTPLUG_MASK_OFF); +} + +/* + * mlxreg_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 mlxreg_hotplug_work_handler(struct work_struct *work) +{ + struct mlxreg_hotplug_priv_data *priv = container_of(work, + struct mlxreg_hotplug_priv_data, dwork.work); + u8 val, aggr_asserted; + unsigned long flags; + + /* Mask aggregation event. */ + outb(0, priv->plat->top_aggr_offset + MLXREG_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) + mlxreg_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) + mlxreg_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) + mlxreg_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 mlxreg_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 + + MLXREG_HOTPLUG_AGGR_MASK_OFF); +} + +static void mlxreg_hotplug_set_irq(struct mlxreg_hotplug_priv_data *priv) +{ + /* Clear psu presense event. */ + outb(0, priv->plat->psu_reg_offset + MLXREG_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 + + MLXREG_HOTPLUG_MASK_OFF); + + /* Clear power cable event. */ + outb(0, priv->plat->pwr_reg_offset + MLXREG_HOTPLUG_EVENT_OFF); + /* Keep power initial status as zero and unmask power event. */ + outb(priv->plat->pwr_mask, priv->plat->pwr_reg_offset + + MLXREG_HOTPLUG_MASK_OFF); + + /* Clear fan presense event. */ + outb(0, priv->plat->fan_reg_offset + MLXREG_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 + + MLXREG_HOTPLUG_MASK_OFF); + + /* Keep aggregation initial status as zero and unmask events. */ + outb(priv->plat->top_aggr_mask, priv->plat->top_aggr_offset + + MLXREG_HOTPLUG_AGGR_MASK_OFF); + + /* Invoke work handler for initializing hot plug devices setting. */ + mlxreg_hotplug_work_handler(&priv->dwork.work); + + enable_irq(priv->irq); +} + +static void mlxreg_hotplug_unset_irq(struct mlxreg_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 + MLXREG_HOTPLUG_AGGR_MASK_OFF); + + /* Mask psu presense event. */ + outb(0, priv->plat->psu_reg_offset + MLXREG_HOTPLUG_MASK_OFF); + /* Clear psu presense event. */ + outb(0, priv->plat->psu_reg_offset + MLXREG_HOTPLUG_EVENT_OFF); + + /* Mask power cable event. */ + outb(0, priv->plat->pwr_reg_offset + MLXREG_HOTPLUG_MASK_OFF); + /* Clear power cable event. */ + outb(0, priv->plat->pwr_reg_offset + MLXREG_HOTPLUG_EVENT_OFF); + + /* Mask fan presense event. */ + outb(0, priv->plat->fan_reg_offset + MLXREG_HOTPLUG_MASK_OFF); + /* Clear fan presense event. */ + outb(0, priv->plat->fan_reg_offset + MLXREG_HOTPLUG_EVENT_OFF); + + /* Remove all the attached devices. */ + for (i = 0; i < priv->plat->psu_count; i++) + mlxreg_hotplug_device_destroy(priv->plat->psu + i); + + for (i = 0; i < priv->plat->pwr_count; i++) + mlxreg_hotplug_device_destroy(priv->plat->pwr + i); + + for (i = 0; i < priv->plat->fan_count; i++) + mlxreg_hotplug_device_destroy(priv->plat->fan + i); +} + +static irqreturn_t mlxreg_hotplug_irq_handler(int irq, void *dev) +{ + struct mlxreg_hotplug_priv_data *priv = + (struct mlxreg_hotplug_priv_data *)dev; + + /* Schedule work task for immediate execution.*/ + schedule_delayed_work(&priv->dwork, 0); + + return IRQ_HANDLED; +} + +static int mlxreg_hotplug_probe(struct platform_device *pdev) +{ + struct mlxreg_hotplug_platform_data *pdata; + struct mlxreg_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, + mlxreg_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, mlxreg_hotplug_work_handler); + spin_lock_init(&priv->lock); + + err = mlxreg_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, + "mlxreg_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. */ + mlxreg_hotplug_set_irq(priv); + + return 0; +} + +static int mlxreg_hotplug_remove(struct platform_device *pdev) +{ + struct mlxreg_hotplug_priv_data *priv = platform_get_drvdata(pdev); + + /* Clean interrupts setup. */ + mlxreg_hotplug_unset_irq(priv); + + return 0; +} + +static struct platform_driver mlxreg_hotplug_driver = { + .driver = { + .name = "mlxreg-hotplug", + }, + .probe = mlxreg_hotplug_probe, + .remove = mlxreg_hotplug_remove, +}; + +module_platform_driver(mlxreg_hotplug_driver); + +MODULE_AUTHOR("Vadim Pasternak "); +MODULE_DESCRIPTION("Mellanox regmap hotplug platform driver"); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_ALIAS("platform:mlxreg-hotplug"); diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index aaca22fb45b9..53f52f9df2c5 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -1169,14 +1169,6 @@ config MLX_PLATFORM If you have a Mellanox system, say Y or M here. -config MLX_CPLD_PLATFORM - tristate "Mellanox platform hotplug driver support" - select HWMON - select I2C - ---help--- - This driver handles hot-plug events for the power suppliers, power - cables and fans on the wide range Mellanox IB and Ethernet systems. - config INTEL_TURBO_MAX_3 bool "Intel Turbo Boost Max Technology 3.0 enumeration driver" depends on X86_64 && SCHED_MC_PRIO diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 57f37e55786a..c388608ad2a3 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -88,6 +88,5 @@ obj-$(CONFIG_INTEL_TELEMETRY) += intel_telemetry_core.o \ obj-$(CONFIG_INTEL_PMC_CORE) += intel_pmc_core.o obj-$(CONFIG_PMC_ATOM) += pmc_atom.o obj-$(CONFIG_MLX_PLATFORM) += mlx-platform.o -obj-$(CONFIG_MLX_CPLD_PLATFORM) += mlxcpld-hotplug.o obj-$(CONFIG_INTEL_TURBO_MAX_3) += intel_turbo_max_3.o obj-$(CONFIG_INTEL_CHTDC_TI_PWRBTN) += intel_chtdc_ti_pwrbtn.o diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c index 504256c3660d..0fbec1f1ca40 100644 --- a/drivers/platform/x86/mlx-platform.c +++ b/drivers/platform/x86/mlx-platform.c @@ -38,7 +38,7 @@ #include #include #include -#include +#include #define MLX_PLAT_DEVICE_NAME "mlxplat" @@ -138,7 +138,7 @@ static struct i2c_mux_reg_platform_data mlxplat_mux_data[] = { }; /* Platform hotplug devices */ -static struct mlxcpld_hotplug_device mlxplat_mlxcpld_psu[] = { +static struct mlxreg_hotplug_device mlxplat_mlxcpld_psu[] = { { .brdinfo = { I2C_BOARD_INFO("24c02", 0x51) }, .bus = 10, @@ -149,7 +149,7 @@ static struct mlxcpld_hotplug_device mlxplat_mlxcpld_psu[] = { }, }; -static struct mlxcpld_hotplug_device mlxplat_mlxcpld_pwr[] = { +static struct mlxreg_hotplug_device mlxplat_mlxcpld_pwr[] = { { .brdinfo = { I2C_BOARD_INFO("dps460", 0x59) }, .bus = 10, @@ -160,7 +160,7 @@ static struct mlxcpld_hotplug_device mlxplat_mlxcpld_pwr[] = { }, }; -static struct mlxcpld_hotplug_device mlxplat_mlxcpld_fan[] = { +static struct mlxreg_hotplug_device mlxplat_mlxcpld_fan[] = { { .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) }, .bus = 11, @@ -181,7 +181,7 @@ static struct mlxcpld_hotplug_device mlxplat_mlxcpld_fan[] = { /* Platform hotplug default data */ static -struct mlxcpld_hotplug_platform_data mlxplat_mlxcpld_default_data = { +struct mlxreg_hotplug_platform_data mlxplat_mlxcpld_default_data = { .top_aggr_offset = MLXPLAT_CPLD_LPC_REG_AGGR_ADRR, .top_aggr_mask = MLXPLAT_CPLD_AGGR_MASK_DEF, .top_aggr_psu_mask = MLXPLAT_CPLD_AGGR_PSU_MASK_DEF, @@ -203,7 +203,7 @@ struct mlxcpld_hotplug_platform_data mlxplat_mlxcpld_default_data = { /* Platform hotplug MSN21xx system family data */ static -struct mlxcpld_hotplug_platform_data mlxplat_mlxcpld_msn21xx_data = { +struct mlxreg_hotplug_platform_data mlxplat_mlxcpld_msn21xx_data = { .top_aggr_offset = MLXPLAT_CPLD_LPC_REG_AGGR_ADRR, .top_aggr_mask = MLXPLAT_CPLD_AGGR_MASK_MSN21XX, .top_aggr_pwr_mask = MLXPLAT_CPLD_AGGR_MASK_MSN21XX, @@ -213,11 +213,11 @@ struct mlxcpld_hotplug_platform_data mlxplat_mlxcpld_msn21xx_data = { }; static struct resource mlxplat_mlxcpld_resources[] = { - [0] = DEFINE_RES_IRQ_NAMED(17, "mlxcpld-hotplug"), + [0] = DEFINE_RES_IRQ_NAMED(17, "mlxreg-hotplug"), }; static struct platform_device *mlxplat_dev; -static struct mlxcpld_hotplug_platform_data *mlxplat_hotplug; +static struct mlxreg_hotplug_platform_data *mlxplat_hotplug; static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi) { @@ -329,7 +329,7 @@ static int __init mlxplat_init(void) } priv->pdev_hotplug = platform_device_register_resndata( - &mlxplat_dev->dev, "mlxcpld-hotplug", + &mlxplat_dev->dev, "mlxreg-hotplug", PLATFORM_DEVID_NONE, mlxplat_mlxcpld_resources, ARRAY_SIZE(mlxplat_mlxcpld_resources), diff --git a/drivers/platform/x86/mlxcpld-hotplug.c b/drivers/platform/x86/mlxcpld-hotplug.c deleted file mode 100644 index aff3686b3b37..000000000000 --- 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 - * - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* 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 "); -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 e4cfcffaa6f4..000000000000 --- 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 - * - * 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 */ diff --git a/include/linux/platform_data/mlxreg.h b/include/linux/platform_data/mlxreg.h new file mode 100644 index 000000000000..8dcbb8e21ee2 --- /dev/null +++ b/include/linux/platform_data/mlxreg.h @@ -0,0 +1,98 @@ +/* + * Copyright (c) 2017 Mellanox Technologies. All rights reserved. + * Copyright (c) 2017 Vadim Pasternak + * + * 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_MLXREG_H +#define __LINUX_PLATFORM_DATA_MLXREG_H + +/** + * struct mlxreg_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 mlxreg_hotplug_device { + struct i2c_adapter *adapter; + struct i2c_client *client; + struct i2c_board_info brdinfo; + u16 bus; +}; + +/** + * struct mlxreg_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 mlxreg_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 mlxreg_hotplug_device *psu; + u8 top_aggr_pwr_mask; + u16 pwr_reg_offset; + u8 pwr_mask; + u8 pwr_count; + struct mlxreg_hotplug_device *pwr; + u8 top_aggr_fan_mask; + u16 fan_reg_offset; + u8 fan_mask; + u8 fan_count; + struct mlxreg_hotplug_device *fan; +}; + +#endif /* __LINUX_PLATFORM_DATA_MLXREG_H */ -- cgit v1.2.3 From 3d838f5514ca5318f46bdb5b3f997cee66091695 Mon Sep 17 00:00:00 2001 From: Vadim Pasternak Date: Mon, 22 Jan 2018 18:43:27 -0800 Subject: platform/mellanox: Rename i2c bus to nr Use Linux convention of nr instead of bus for i2c adapter number. Signed-off-by: Vadim Pasternak Acked-by: Andy Shevchenko [dvhart: refactored commit into smaller functional changes] Signed-off-by: Darren Hart (VMware) --- drivers/platform/mellanox/mlxreg-hotplug.c | 6 +++--- drivers/platform/x86/mlx-platform.c | 16 ++++++++-------- include/linux/platform_data/mlxreg.h | 4 ++-- 3 files changed, 13 insertions(+), 13 deletions(-) (limited to 'include') diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c index e55f57639cc1..752f756723e0 100644 --- a/drivers/platform/mellanox/mlxreg-hotplug.c +++ b/drivers/platform/mellanox/mlxreg-hotplug.c @@ -186,17 +186,17 @@ static int mlxreg_hotplug_attr_init(struct mlxreg_hotplug_priv_data *priv) static int mlxreg_hotplug_device_create(struct device *dev, struct mlxreg_hotplug_device *item) { - item->adapter = i2c_get_adapter(item->bus); + item->adapter = i2c_get_adapter(item->nr); if (!item->adapter) { dev_err(dev, "Failed to get adapter for bus %d\n", - item->bus); + item->nr); 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); + item->brdinfo.type, item->nr, item->brdinfo.addr); i2c_put_adapter(item->adapter); item->adapter = NULL; return -EFAULT; diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c index 0fbec1f1ca40..56017143d6a9 100644 --- a/drivers/platform/x86/mlx-platform.c +++ b/drivers/platform/x86/mlx-platform.c @@ -141,41 +141,41 @@ static struct i2c_mux_reg_platform_data mlxplat_mux_data[] = { static struct mlxreg_hotplug_device mlxplat_mlxcpld_psu[] = { { .brdinfo = { I2C_BOARD_INFO("24c02", 0x51) }, - .bus = 10, + .nr = 10, }, { .brdinfo = { I2C_BOARD_INFO("24c02", 0x50) }, - .bus = 10, + .nr = 10, }, }; static struct mlxreg_hotplug_device mlxplat_mlxcpld_pwr[] = { { .brdinfo = { I2C_BOARD_INFO("dps460", 0x59) }, - .bus = 10, + .nr = 10, }, { .brdinfo = { I2C_BOARD_INFO("dps460", 0x58) }, - .bus = 10, + .nr = 10, }, }; static struct mlxreg_hotplug_device mlxplat_mlxcpld_fan[] = { { .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) }, - .bus = 11, + .nr = 11, }, { .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) }, - .bus = 12, + .nr = 12, }, { .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) }, - .bus = 13, + .nr = 13, }, { .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) }, - .bus = 14, + .nr = 14, }, }; diff --git a/include/linux/platform_data/mlxreg.h b/include/linux/platform_data/mlxreg.h index 8dcbb8e21ee2..ffbcb7886c62 100644 --- a/include/linux/platform_data/mlxreg.h +++ b/include/linux/platform_data/mlxreg.h @@ -39,7 +39,7 @@ * @adapter: I2C device adapter; * @client: I2C device client; * @brdinfo: device board information; - * @bus: I2C bus, where device is attached; + * @nr: I2C device adapter number, to which device is to be attached; * * Structure represents I2C hotplug device static data (board topology) and * dynamic data (related kernel objects handles). @@ -48,7 +48,7 @@ struct mlxreg_hotplug_device { struct i2c_adapter *adapter; struct i2c_client *client; struct i2c_board_info brdinfo; - u16 bus; + int nr; }; /** -- cgit v1.2.3 From c6acad68eb2dbffd0497f91b206de5c362f59ee4 Mon Sep 17 00:00:00 2001 From: Vadim Pasternak Date: Mon, 22 Jan 2018 19:55:11 -0800 Subject: platform/mellanox: mlxreg-hotplug: Modify to use a regmap interface Restructure mlxreg header for unification of hotplug item definitions. Unify hotplug items to allow any kind of item (power controller, fan eeprom, psu eeprom, asic health) in common way. Use a hardware independent regmap interface, enabling the support of hotplug events over programmable devices attached to different bus types, such as I2C, LPC, or SPI. Add a device node to the mlxreg_core_data structure. Signed-off-by: Vadim Pasternak Acked-by: Andy Shevchenko [dvhart: spelling corrections, refactor device node introduction] Signed-off-by: Darren Hart (VMware) --- drivers/platform/mellanox/Kconfig | 1 + drivers/platform/mellanox/mlxreg-hotplug.c | 614 +++++++++++++++++------------ drivers/platform/x86/mlx-platform.c | 231 ++++++++--- include/linux/platform_data/mlxreg.h | 126 ++++-- 4 files changed, 635 insertions(+), 337 deletions(-) (limited to 'include') diff --git a/drivers/platform/mellanox/Kconfig b/drivers/platform/mellanox/Kconfig index d73529203327..0fb2568716bb 100644 --- a/drivers/platform/mellanox/Kconfig +++ b/drivers/platform/mellanox/Kconfig @@ -16,6 +16,7 @@ if MELLANOX_PLATFORM config MLXREG_HOTPLUG tristate "Mellanox platform hotplug driver support" + depends on REGMAP depends on HWMON depends on I2C ---help--- diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c index e4f7e8efd397..bcb564fd9f04 100644 --- a/drivers/platform/mellanox/mlxreg-hotplug.c +++ b/drivers/platform/mellanox/mlxreg-hotplug.c @@ -37,99 +37,97 @@ #include #include #include -#include #include +#include #include #include #include +#include #include -/* Offset of event and mask registers from status register */ +/* Offset of event and mask registers from status register. */ #define MLXREG_HOTPLUG_EVENT_OFF 1 -#define MLXREG_HOTPLUG_MASK_OFF 2 +#define MLXREG_HOTPLUG_MASK_OFF 2 #define MLXREG_HOTPLUG_AGGR_MASK_OFF 1 -#define MLXREG_HOTPLUG_ATTRS_NUM 8 +/* ASIC health parameters. */ +#define MLXREG_HOTPLUG_HEALTH_MASK 0x02 +#define MLXREG_HOTPLUG_RST_CNTR 3 -/** - * enum mlxreg_hotplug_attr_type - sysfs attributes for hotplug events: - * @MLXREG_HOTPLUG_ATTR_TYPE_PSU: power supply unit attribute; - * @MLXREG_HOTPLUG_ATTR_TYPE_PWR: power cable attribute; - * @MLXREG_HOTPLUG_ATTR_TYPE_FAN: FAN drawer attribute; - */ -enum mlxreg_hotplug_attr_type { - MLXREG_HOTPLUG_ATTR_TYPE_PSU, - MLXREG_HOTPLUG_ATTR_TYPE_PWR, - MLXREG_HOTPLUG_ATTR_TYPE_FAN, -}; +#define MLXREG_HOTPLUG_ATTRS_MAX 24 /** * struct mlxreg_hotplug_priv_data - platform private data: - * @irq: platform interrupt number; + * @irq: platform device interrupt number; * @pdev: platform device; * @plat: platform data; + * @dwork: delayed work template; + * @lock: spin lock; * @hwmon: hwmon device; * @mlxreg_hotplug_attr: sysfs attributes array; * @mlxreg_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; + * @cell: location of top aggregation interrupt register; + * @mask: top aggregation interrupt common mask; * @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 mlxreg_hotplug_priv_data { int irq; + struct device *dev; struct platform_device *pdev; struct mlxreg_hotplug_platform_data *plat; + struct regmap *regmap; + struct delayed_work dwork_irq; + struct delayed_work dwork; + spinlock_t lock; /* sync with interrupt */ struct device *hwmon; - struct attribute *mlxreg_hotplug_attr[MLXREG_HOTPLUG_ATTRS_NUM + 1]; + struct attribute *mlxreg_hotplug_attr[MLXREG_HOTPLUG_ATTRS_MAX + 1]; struct sensor_device_attribute_2 - mlxreg_hotplug_dev_attr[MLXREG_HOTPLUG_ATTRS_NUM]; + mlxreg_hotplug_dev_attr[MLXREG_HOTPLUG_ATTRS_MAX]; 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; + u32 cell; + u32 mask; + u32 aggr_cache; + bool after_probe; }; static int mlxreg_hotplug_device_create(struct device *dev, - struct mlxreg_hotplug_device *item) + struct mlxreg_core_data *data) { - item->adapter = i2c_get_adapter(item->nr); - if (!item->adapter) { + data->hpdev.adapter = i2c_get_adapter(data->hpdev.nr); + if (!data->hpdev.adapter) { dev_err(dev, "Failed to get adapter for bus %d\n", - item->nr); + data->hpdev.nr); return -EFAULT; } - item->client = i2c_new_device(item->adapter, &item->brdinfo); - if (!item->client) { + data->hpdev.client = i2c_new_device(data->hpdev.adapter, + data->hpdev.brdinfo); + if (!data->hpdev.client) { dev_err(dev, "Failed to create client %s at bus %d at addr 0x%02x\n", - item->brdinfo.type, item->nr, item->brdinfo.addr); - i2c_put_adapter(item->adapter); - item->adapter = NULL; + data->hpdev.brdinfo->type, data->hpdev.nr, + data->hpdev.brdinfo->addr); + + i2c_put_adapter(data->hpdev.adapter); + data->hpdev.adapter = NULL; return -EFAULT; } return 0; } -static void mlxreg_hotplug_device_destroy(struct mlxreg_hotplug_device *item) +static void mlxreg_hotplug_device_destroy(struct mlxreg_core_data *data) { - if (item->client) { - i2c_unregister_device(item->client); - item->client = NULL; + if (data->hpdev.client) { + i2c_unregister_device(data->hpdev.client); + data->hpdev.client = NULL; } - if (item->adapter) { - i2c_put_adapter(item->adapter); - item->adapter = NULL; + if (data->hpdev.adapter) { + i2c_put_adapter(data->hpdev.adapter); + data->hpdev.adapter = NULL; } } @@ -137,41 +135,76 @@ static ssize_t mlxreg_hotplug_attr_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct platform_device *pdev = to_platform_device(dev); - struct mlxreg_hotplug_priv_data *priv = platform_get_drvdata(pdev); + struct mlxreg_hotplug_priv_data *priv = dev_get_drvdata(dev); + struct mlxreg_core_hotplug_platform_data *pdata; 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 MLXREG_HOTPLUG_ATTR_TYPE_PSU: - /* Bit = 0 : PSU is present. */ - reg_val = !!!(inb(priv->plat->psu_reg_offset) & BIT(index)); - break; - - case MLXREG_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 MLXREG_HOTPLUG_ATTR_TYPE_FAN: - /* Bit = 0 : FAN is present. */ - reg_val = !!!(inb(priv->plat->fan_reg_offset) & BIT(index % - priv->plat->fan_count)); - break; + struct mlxreg_core_item *item; + struct mlxreg_core_data *data; + u32 regval; + int ret; + + pdata = dev_get_platdata(&priv->pdev->dev); + item = pdata->items + nr; + data = item->data + index; + + ret = regmap_read(priv->regmap, data->reg, ®val); + if (ret) + return ret; + + if (item->health) { + regval &= data->mask; + } else { + /* Bit = 0 : functional if item->inversed is true. */ + if (item->inversed) + regval = !(regval & data->mask); + else + regval = !!(regval & data->mask); } - return sprintf(buf, "%u\n", reg_val); + return sprintf(buf, "%u\n", regval); } #define PRIV_ATTR(i) priv->mlxreg_hotplug_attr[i] #define PRIV_DEV_ATTR(i) priv->mlxreg_hotplug_dev_attr[i] + static int mlxreg_hotplug_attr_init(struct mlxreg_hotplug_priv_data *priv) { - int num_attrs = priv->plat->psu_count + priv->plat->pwr_count + - priv->plat->fan_count; - int i; + struct mlxreg_core_hotplug_platform_data *pdata; + struct mlxreg_core_item *item; + struct mlxreg_core_data *data; + int num_attrs = 0, id = 0, i, j; + + pdata = dev_get_platdata(&priv->pdev->dev); + item = pdata->items; + + /* Go over all kinds of items - psu, pwr, fan. */ + for (i = 0; i < pdata->counter; i++, item++) { + num_attrs += item->count; + data = item->data; + /* Go over all units within the item. */ + for (j = 0; j < item->count; j++, data++, id++) { + PRIV_ATTR(id) = &PRIV_DEV_ATTR(id).dev_attr.attr; + PRIV_ATTR(id)->name = devm_kasprintf(&priv->pdev->dev, + GFP_KERNEL, + data->label); + + if (!PRIV_ATTR(id)->name) { + dev_err(priv->dev, "Memory allocation failed for attr %d.\n", + id); + return -ENOMEM; + } + + PRIV_DEV_ATTR(id).dev_attr.attr.name = + PRIV_ATTR(id)->name; + PRIV_DEV_ATTR(id).dev_attr.attr.mode = 0444; + PRIV_DEV_ATTR(id).dev_attr.show = + mlxreg_hotplug_attr_show; + PRIV_DEV_ATTR(id).nr = i; + PRIV_DEV_ATTR(id).index = j; + sysfs_attr_init(&PRIV_DEV_ATTR(id).dev_attr.attr); + } + } priv->group.attrs = devm_kzalloc(&priv->pdev->dev, num_attrs * sizeof(struct attribute *), @@ -179,38 +212,6 @@ static int mlxreg_hotplug_attr_init(struct mlxreg_hotplug_priv_data *priv) 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 = MLXREG_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 = MLXREG_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 = MLXREG_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 = mlxreg_hotplug_attr_show; - PRIV_DEV_ATTR(i).index = i; - sysfs_attr_init(&PRIV_DEV_ATTR(i).dev_attr.attr); - } - priv->group.attrs = priv->mlxreg_hotplug_attr; priv->groups[0] = &priv->group; priv->groups[1] = NULL; @@ -218,20 +219,13 @@ static int mlxreg_hotplug_attr_init(struct mlxreg_hotplug_priv_data *priv) return 0; } -static inline void -mlxreg_hotplug_work_helper(struct device *dev, - struct mlxreg_hotplug_device *item, u8 is_inverse, - u16 offset, u8 mask, u8 *cache) +static void +mlxreg_hotplug_work_helper(struct mlxreg_hotplug_priv_data *priv, + struct mlxreg_core_item *item) { - u8 val, asserted; - int bit; - - /* Mask event. */ - outb(0, offset + MLXREG_HOTPLUG_MASK_OFF); - /* Read status. */ - val = inb(offset) & mask; - asserted = *cache ^ val; - *cache = val; + struct mlxreg_core_data *data; + u32 asserted, regval, bit; + int ret; /* * Validate if item related to received signal type is valid. @@ -241,86 +235,177 @@ mlxreg_hotplug_work_helper(struct device *dev, * 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); + dev_err(priv->dev, "False signal: at offset:mask 0x%02x:0x%02x.\n", + item->reg, item->mask); + return; } + /* Mask event. */ + ret = regmap_write(priv->regmap, item->reg + MLXREG_HOTPLUG_MASK_OFF, + 0); + if (ret) + goto out; + + /* Read status. */ + ret = regmap_read(priv->regmap, item->reg, ®val); + if (ret) + goto out; + + /* Set asserted bits and save last status. */ + regval &= item->mask; + asserted = item->cache ^ regval; + item->cache = regval; + for_each_set_bit(bit, (unsigned long *)&asserted, 8) { - if (val & BIT(bit)) { - if (is_inverse) - mlxreg_hotplug_device_destroy(item + bit); + data = item->data + bit; + if (regval & BIT(bit)) { + if (item->inversed) + mlxreg_hotplug_device_destroy(data); else - mlxreg_hotplug_device_create(dev, item + bit); + mlxreg_hotplug_device_create(priv->dev, data); } else { - if (is_inverse) - mlxreg_hotplug_device_create(dev, item + bit); + if (item->inversed) + mlxreg_hotplug_device_create(priv->dev, data); else - mlxreg_hotplug_device_destroy(item + bit); + mlxreg_hotplug_device_destroy(data); } } /* Acknowledge event. */ - outb(0, offset + MLXREG_HOTPLUG_EVENT_OFF); + ret = regmap_write(priv->regmap, item->reg + MLXREG_HOTPLUG_EVENT_OFF, + 0); + if (ret) + goto out; + /* Unmask event. */ - outb(mask, offset + MLXREG_HOTPLUG_MASK_OFF); + ret = regmap_write(priv->regmap, item->reg + MLXREG_HOTPLUG_MASK_OFF, + item->mask); + + out: + if (ret) + dev_err(priv->dev, "Failed to complete workqueue.\n"); +} + +static void +mlxreg_hotplug_health_work_helper(struct mlxreg_hotplug_priv_data *priv, + struct mlxreg_core_item *item) +{ + struct mlxreg_core_data *data = item->data; + u32 regval; + int i, ret; + + for (i = 0; i < item->count; i++, data++) { + /* Mask event. */ + ret = regmap_write(priv->regmap, data->reg + + MLXREG_HOTPLUG_MASK_OFF, 0); + if (ret) + goto out; + + /* Read status. */ + ret = regmap_read(priv->regmap, data->reg, ®val); + if (ret) + goto out; + + regval &= data->mask; + item->cache = regval; + if (regval == MLXREG_HOTPLUG_HEALTH_MASK) { + if ((data->health_cntr++ == MLXREG_HOTPLUG_RST_CNTR) || + !priv->after_probe) { + mlxreg_hotplug_device_create(priv->dev, data); + data->attached = true; + } + } else { + if (data->attached) { + mlxreg_hotplug_device_destroy(data); + data->attached = false; + data->health_cntr = 0; + } + } + + /* Acknowledge event. */ + ret = regmap_write(priv->regmap, data->reg + + MLXREG_HOTPLUG_EVENT_OFF, 0); + if (ret) + goto out; + + /* Unmask event. */ + ret = regmap_write(priv->regmap, data->reg + + MLXREG_HOTPLUG_MASK_OFF, data->mask); + if (ret) + goto out; + } + + out: + if (ret) + dev_err(priv->dev, "Failed to complete workqueue.\n"); } /* - * mlxreg_hotplug_work_handler - performs traversing of CPLD interrupt + * mlxreg_hotplug_work_handler - performs traversing of device 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|----->| * | - * *-----------------* | | - * *---* + * Aggregation registers (status/mask) + * PSU registers: *---* + * *-----------------* | | + * |status/event/mask|-----> | * | + * *-----------------* | | + * Power registers: | | + * *-----------------* | | + * |status/event/mask|-----> | * | + * *-----------------* | | + * FAN registers: | |--> CPU + * *-----------------* | | + * |status/event/mask|-----> | * | + * *-----------------* | | + * ASIC 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. + * cable attached/detached, ASIC health good/bad, relevant device is created + * or destroyed. */ static void mlxreg_hotplug_work_handler(struct work_struct *work) { - struct mlxreg_hotplug_priv_data *priv = container_of(work, - struct mlxreg_hotplug_priv_data, dwork.work); - u8 val, aggr_asserted; + struct mlxreg_core_hotplug_platform_data *pdata; + struct mlxreg_hotplug_priv_data *priv; + struct mlxreg_core_item *item; + u32 regval, aggr_asserted; unsigned long flags; + int i, ret; + + priv = container_of(work, struct mlxreg_hotplug_priv_data, + dwork_irq.work); + pdata = dev_get_platdata(&priv->pdev->dev); + item = pdata->items; /* Mask aggregation event. */ - outb(0, priv->plat->top_aggr_offset + MLXREG_HOTPLUG_AGGR_MASK_OFF); + ret = regmap_write(priv->regmap, pdata->cell + + MLXREG_HOTPLUG_AGGR_MASK_OFF, 0); + if (ret < 0) + goto out; + /* 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) - mlxreg_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) - mlxreg_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) - mlxreg_hotplug_work_helper(&priv->pdev->dev, priv->plat->fan, - 1, priv->plat->fan_reg_offset, - priv->plat->fan_mask, - &priv->fan_cache); + ret = regmap_read(priv->regmap, pdata->cell, ®val); + if (ret) + goto out; + + regval &= pdata->mask; + aggr_asserted = priv->aggr_cache ^ regval; + priv->aggr_cache = regval; + + /* Handle topology and health configuration changes. */ + for (i = 0; i < pdata->counter; i++, item++) { + if (aggr_asserted & item->aggr_mask) { + if (item->health) + mlxreg_hotplug_health_work_helper(priv, item); + else + mlxreg_hotplug_work_helper(priv, item); + } + } if (aggr_asserted) { spin_lock_irqsave(&priv->lock, flags); @@ -335,8 +420,8 @@ static void mlxreg_hotplug_work_handler(struct work_struct *work) * validates that no new signals have been received during * masking. */ - cancel_delayed_work(&priv->dwork); - schedule_delayed_work(&priv->dwork, 0); + cancel_delayed_work(&priv->dwork_irq); + schedule_delayed_work(&priv->dwork_irq, 0); spin_unlock_irqrestore(&priv->lock, flags); @@ -344,92 +429,119 @@ static void mlxreg_hotplug_work_handler(struct work_struct *work) } /* Unmask aggregation event (no need acknowledge). */ - outb(priv->plat->top_aggr_mask, priv->plat->top_aggr_offset + - MLXREG_HOTPLUG_AGGR_MASK_OFF); + ret = regmap_write(priv->regmap, pdata->cell + + MLXREG_HOTPLUG_AGGR_MASK_OFF, pdata->mask); + + out: + if (ret) + dev_err(priv->dev, "Failed to complete workqueue.\n"); } -static void mlxreg_hotplug_set_irq(struct mlxreg_hotplug_priv_data *priv) +static int mlxreg_hotplug_set_irq(struct mlxreg_hotplug_priv_data *priv) { - /* Clear psu presense event. */ - outb(0, priv->plat->psu_reg_offset + MLXREG_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 + - MLXREG_HOTPLUG_MASK_OFF); - - /* Clear power cable event. */ - outb(0, priv->plat->pwr_reg_offset + MLXREG_HOTPLUG_EVENT_OFF); - /* Keep power initial status as zero and unmask power event. */ - outb(priv->plat->pwr_mask, priv->plat->pwr_reg_offset + - MLXREG_HOTPLUG_MASK_OFF); - - /* Clear fan presense event. */ - outb(0, priv->plat->fan_reg_offset + MLXREG_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 + - MLXREG_HOTPLUG_MASK_OFF); + struct mlxreg_core_hotplug_platform_data *pdata; + struct mlxreg_core_item *item; + int i, ret; + + pdata = dev_get_platdata(&priv->pdev->dev); + item = pdata->items; + + for (i = 0; i < pdata->counter; i++, item++) { + /* Clear group presense event. */ + ret = regmap_write(priv->regmap, item->reg + + MLXREG_HOTPLUG_EVENT_OFF, 0); + if (ret) + goto out; + + /* Set group initial status as mask and unmask group event. */ + if (item->inversed) { + item->cache = item->mask; + ret = regmap_write(priv->regmap, item->reg + + MLXREG_HOTPLUG_MASK_OFF, + item->mask); + if (ret) + goto out; + } + } /* Keep aggregation initial status as zero and unmask events. */ - outb(priv->plat->top_aggr_mask, priv->plat->top_aggr_offset + - MLXREG_HOTPLUG_AGGR_MASK_OFF); + ret = regmap_write(priv->regmap, pdata->cell + + MLXREG_HOTPLUG_AGGR_MASK_OFF, pdata->mask); + if (ret) + goto out; + + /* Keep low aggregation initial status as zero and unmask events. */ + if (pdata->cell_low) { + ret = regmap_write(priv->regmap, pdata->cell_low + + MLXREG_HOTPLUG_AGGR_MASK_OFF, + pdata->mask_low); + if (ret) + goto out; + } /* Invoke work handler for initializing hot plug devices setting. */ - mlxreg_hotplug_work_handler(&priv->dwork.work); + mlxreg_hotplug_work_handler(&priv->dwork_irq.work); + out: + if (ret) + dev_err(priv->dev, "Failed to set interrupts.\n"); enable_irq(priv->irq); + return ret; } static void mlxreg_hotplug_unset_irq(struct mlxreg_hotplug_priv_data *priv) { - int i; + struct mlxreg_core_hotplug_platform_data *pdata; + struct mlxreg_core_item *item; + struct mlxreg_core_data *data; + int count, i, j; + pdata = dev_get_platdata(&priv->pdev->dev); + item = pdata->items; disable_irq(priv->irq); - cancel_delayed_work_sync(&priv->dwork); - - /* Mask aggregation event. */ - outb(0, priv->plat->top_aggr_offset + MLXREG_HOTPLUG_AGGR_MASK_OFF); - - /* Mask psu presense event. */ - outb(0, priv->plat->psu_reg_offset + MLXREG_HOTPLUG_MASK_OFF); - /* Clear psu presense event. */ - outb(0, priv->plat->psu_reg_offset + MLXREG_HOTPLUG_EVENT_OFF); - - /* Mask power cable event. */ - outb(0, priv->plat->pwr_reg_offset + MLXREG_HOTPLUG_MASK_OFF); - /* Clear power cable event. */ - outb(0, priv->plat->pwr_reg_offset + MLXREG_HOTPLUG_EVENT_OFF); - - /* Mask fan presense event. */ - outb(0, priv->plat->fan_reg_offset + MLXREG_HOTPLUG_MASK_OFF); - /* Clear fan presense event. */ - outb(0, priv->plat->fan_reg_offset + MLXREG_HOTPLUG_EVENT_OFF); - - /* Remove all the attached devices. */ - for (i = 0; i < priv->plat->psu_count; i++) - mlxreg_hotplug_device_destroy(priv->plat->psu + i); + cancel_delayed_work_sync(&priv->dwork_irq); - for (i = 0; i < priv->plat->pwr_count; i++) - mlxreg_hotplug_device_destroy(priv->plat->pwr + i); + /* Mask low aggregation event, if defined. */ + if (pdata->cell_low) + regmap_write(priv->regmap, pdata->cell_low + + MLXREG_HOTPLUG_AGGR_MASK_OFF, 0); - for (i = 0; i < priv->plat->fan_count; i++) - mlxreg_hotplug_device_destroy(priv->plat->fan + i); + /* Mask aggregation event. */ + regmap_write(priv->regmap, pdata->cell + MLXREG_HOTPLUG_AGGR_MASK_OFF, + 0); + + /* Clear topology configurations. */ + for (i = 0; i < pdata->counter; i++, item++) { + data = item->data; + /* Mask group presense event. */ + regmap_write(priv->regmap, data->reg + MLXREG_HOTPLUG_MASK_OFF, + 0); + /* Clear group presense event. */ + regmap_write(priv->regmap, data->reg + + MLXREG_HOTPLUG_EVENT_OFF, 0); + + /* Remove all the attached devices in group. */ + count = item->count; + for (j = 0; j < count; j++, data++) + mlxreg_hotplug_device_destroy(data); + } } static irqreturn_t mlxreg_hotplug_irq_handler(int irq, void *dev) { - struct mlxreg_hotplug_priv_data *priv = - (struct mlxreg_hotplug_priv_data *)dev; + struct mlxreg_hotplug_priv_data *priv; + + priv = (struct mlxreg_hotplug_priv_data *)dev; /* Schedule work task for immediate execution.*/ - schedule_delayed_work(&priv->dwork, 0); + schedule_delayed_work(&priv->dwork_irq, 0); return IRQ_HANDLED; } static int mlxreg_hotplug_probe(struct platform_device *pdev) { - struct mlxreg_hotplug_platform_data *pdata; + struct mlxreg_core_hotplug_platform_data *pdata; struct mlxreg_hotplug_priv_data *priv; int err; @@ -443,31 +555,42 @@ static int mlxreg_hotplug_probe(struct platform_device *pdev) 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; + if (pdata->irq) { + priv->irq = pdata->irq; + } else { + 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; + } } + priv->regmap = pdata->regmap; + priv->dev = pdev->dev.parent; + priv->pdev = pdev; + err = devm_request_irq(&pdev->dev, priv->irq, - mlxreg_hotplug_irq_handler, 0, pdev->name, - priv); + mlxreg_hotplug_irq_handler, IRQF_TRIGGER_FALLING + | IRQF_SHARED, "mlxreg-hotplug", 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, mlxreg_hotplug_work_handler); + disable_irq(priv->irq); spin_lock_init(&priv->lock); + INIT_DELAYED_WORK(&priv->dwork_irq, mlxreg_hotplug_work_handler); + /* Perform initial interrupts setup. */ + mlxreg_hotplug_set_irq(priv); + + priv->after_probe = true; + dev_set_drvdata(&pdev->dev, priv); err = mlxreg_hotplug_attr_init(priv); if (err) { - dev_err(&pdev->dev, "Failed to allocate attributes: %d\n", err); + dev_err(&pdev->dev, "Failed to allocate attributes: %d\n", + err); return err; } @@ -479,17 +602,12 @@ static int mlxreg_hotplug_probe(struct platform_device *pdev) return PTR_ERR(priv->hwmon); } - platform_set_drvdata(pdev, priv); - - /* Perform initial interrupts setup. */ - mlxreg_hotplug_set_irq(priv); - return 0; } static int mlxreg_hotplug_remove(struct platform_device *pdev) { - struct mlxreg_hotplug_priv_data *priv = platform_get_drvdata(pdev); + struct mlxreg_hotplug_priv_data *priv = dev_get_drvdata(&pdev->dev); /* Clean interrupts setup. */ mlxreg_hotplug_unset_irq(priv); diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c index 56017143d6a9..03c9e7a76d89 100644 --- a/drivers/platform/x86/mlx-platform.c +++ b/drivers/platform/x86/mlx-platform.c @@ -35,20 +35,22 @@ #include #include #include +#include #include #include #include #include +#include #define MLX_PLAT_DEVICE_NAME "mlxplat" /* LPC bus IO offsets */ #define MLXPLAT_CPLD_LPC_I2C_BASE_ADRR 0x2000 #define MLXPLAT_CPLD_LPC_REG_BASE_ADRR 0x2500 -#define MLXPLAT_CPLD_LPC_REG_AGGR_ADRR 0x253a -#define MLXPLAT_CPLD_LPC_REG_PSU_ADRR 0x2558 -#define MLXPLAT_CPLD_LPC_REG_PWR_ADRR 0x2564 -#define MLXPLAT_CPLD_LPC_REG_FAN_ADRR 0x2588 +#define MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET 0x3a +#define MLXPLAT_CPLD_LPC_REG_PSU_OFFSET 0x58 +#define MLXPLAT_CPLD_LPC_REG_PWR_OFFSET 0x64 +#define MLXPLAT_CPLD_LPC_REG_FAN_OFFSET 0x88 #define MLXPLAT_CPLD_LPC_IO_RANGE 0x100 #define MLXPLAT_CPLD_LPC_I2C_CH1_OFF 0xdb #define MLXPLAT_CPLD_LPC_I2C_CH2_OFF 0xda @@ -138,78 +140,194 @@ static struct i2c_mux_reg_platform_data mlxplat_mux_data[] = { }; /* Platform hotplug devices */ -static struct mlxreg_hotplug_device mlxplat_mlxcpld_psu[] = { +static struct i2c_board_info mlxplat_mlxcpld_psu[] = { { - .brdinfo = { I2C_BOARD_INFO("24c02", 0x51) }, - .nr = 10, + I2C_BOARD_INFO("24c02", 0x51), }, { - .brdinfo = { I2C_BOARD_INFO("24c02", 0x50) }, - .nr = 10, + I2C_BOARD_INFO("24c02", 0x50), }, }; -static struct mlxreg_hotplug_device mlxplat_mlxcpld_pwr[] = { +static struct i2c_board_info mlxplat_mlxcpld_pwr[] = { { - .brdinfo = { I2C_BOARD_INFO("dps460", 0x59) }, - .nr = 10, + I2C_BOARD_INFO("dps460", 0x59), }, { - .brdinfo = { I2C_BOARD_INFO("dps460", 0x58) }, - .nr = 10, + I2C_BOARD_INFO("dps460", 0x58), }, }; -static struct mlxreg_hotplug_device mlxplat_mlxcpld_fan[] = { +static struct i2c_board_info mlxplat_mlxcpld_fan[] = { { - .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) }, - .nr = 11, + I2C_BOARD_INFO("24c32", 0x50), }, { - .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) }, - .nr = 12, + I2C_BOARD_INFO("24c32", 0x50), }, { - .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) }, - .nr = 13, + I2C_BOARD_INFO("24c32", 0x50), }, { - .brdinfo = { I2C_BOARD_INFO("24c32", 0x50) }, - .nr = 14, + I2C_BOARD_INFO("24c32", 0x50), }, }; /* Platform hotplug default data */ +static struct mlxreg_core_data mlxplat_mlxcpld_default_psu_items_data[] = { + { + .label = "psu1", + .reg = MLXPLAT_CPLD_LPC_REG_PSU_OFFSET, + .mask = BIT(0), + .hpdev.brdinfo = &mlxplat_mlxcpld_psu[0], + .hpdev.nr = 10, + }, + { + .label = "psu2", + .reg = MLXPLAT_CPLD_LPC_REG_PSU_OFFSET, + .mask = BIT(1), + .hpdev.brdinfo = &mlxplat_mlxcpld_psu[1], + .hpdev.nr = 10, + }, +}; + +static struct mlxreg_core_data mlxplat_mlxcpld_default_pwr_items_data[] = { + { + .label = "pwr1", + .reg = MLXPLAT_CPLD_LPC_REG_PWR_OFFSET, + .mask = BIT(0), + .hpdev.brdinfo = &mlxplat_mlxcpld_pwr[0], + .hpdev.nr = 10, + }, + { + .label = "pwr2", + .reg = MLXPLAT_CPLD_LPC_REG_PWR_OFFSET, + .mask = BIT(1), + .hpdev.brdinfo = &mlxplat_mlxcpld_pwr[1], + .hpdev.nr = 10, + }, +}; + +static struct mlxreg_core_data mlxplat_mlxcpld_default_fan_items_data[] = { + { + .label = "fan1", + .reg = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET, + .mask = BIT(0), + .hpdev.brdinfo = &mlxplat_mlxcpld_fan[0], + .hpdev.nr = 11, + }, + { + .label = "fan2", + .reg = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET, + .mask = BIT(1), + .hpdev.brdinfo = &mlxplat_mlxcpld_fan[1], + .hpdev.nr = 12, + }, + { + .label = "fan3", + .reg = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET, + .mask = BIT(2), + .hpdev.brdinfo = &mlxplat_mlxcpld_fan[2], + .hpdev.nr = 13, + }, + { + .label = "fan4", + .reg = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET, + .mask = BIT(3), + .hpdev.brdinfo = &mlxplat_mlxcpld_fan[3], + .hpdev.nr = 14, + }, +}; + +static struct mlxreg_core_item mlxplat_mlxcpld_default_items[] = { + { + .data = mlxplat_mlxcpld_default_psu_items_data, + .aggr_mask = MLXPLAT_CPLD_AGGR_PSU_MASK_DEF, + .reg = MLXPLAT_CPLD_LPC_REG_PSU_OFFSET, + .mask = MLXPLAT_CPLD_PSU_MASK, + .count = ARRAY_SIZE(mlxplat_mlxcpld_psu), + .inversed = 1, + .health = false, + }, + { + .data = mlxplat_mlxcpld_default_pwr_items_data, + .aggr_mask = MLXPLAT_CPLD_AGGR_PWR_MASK_DEF, + .reg = MLXPLAT_CPLD_LPC_REG_PWR_OFFSET, + .mask = MLXPLAT_CPLD_PWR_MASK, + .count = ARRAY_SIZE(mlxplat_mlxcpld_pwr), + .inversed = 0, + .health = false, + }, + { + .data = mlxplat_mlxcpld_default_fan_items_data, + .aggr_mask = MLXPLAT_CPLD_AGGR_FAN_MASK_DEF, + .reg = MLXPLAT_CPLD_LPC_REG_FAN_OFFSET, + .mask = MLXPLAT_CPLD_FAN_MASK, + .count = ARRAY_SIZE(mlxplat_mlxcpld_fan), + .inversed = 1, + .health = false, + }, +}; + static -struct mlxreg_hotplug_platform_data mlxplat_mlxcpld_default_data = { - .top_aggr_offset = MLXPLAT_CPLD_LPC_REG_AGGR_ADRR, - .top_aggr_mask = MLXPLAT_CPLD_AGGR_MASK_DEF, - .top_aggr_psu_mask = MLXPLAT_CPLD_AGGR_PSU_MASK_DEF, - .psu_reg_offset = MLXPLAT_CPLD_LPC_REG_PSU_ADRR, - .psu_mask = MLXPLAT_CPLD_PSU_MASK, - .psu_count = ARRAY_SIZE(mlxplat_mlxcpld_psu), - .psu = mlxplat_mlxcpld_psu, - .top_aggr_pwr_mask = MLXPLAT_CPLD_AGGR_PWR_MASK_DEF, - .pwr_reg_offset = MLXPLAT_CPLD_LPC_REG_PWR_ADRR, - .pwr_mask = MLXPLAT_CPLD_PWR_MASK, - .pwr_count = ARRAY_SIZE(mlxplat_mlxcpld_pwr), - .pwr = mlxplat_mlxcpld_pwr, - .top_aggr_fan_mask = MLXPLAT_CPLD_AGGR_FAN_MASK_DEF, - .fan_reg_offset = MLXPLAT_CPLD_LPC_REG_FAN_ADRR, - .fan_mask = MLXPLAT_CPLD_FAN_MASK, - .fan_count = ARRAY_SIZE(mlxplat_mlxcpld_fan), - .fan = mlxplat_mlxcpld_fan, +struct mlxreg_core_hotplug_platform_data mlxplat_mlxcpld_default_data = { + .items = mlxplat_mlxcpld_default_items, + .counter = ARRAY_SIZE(mlxplat_mlxcpld_default_items), + .cell = MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET, + .mask = MLXPLAT_CPLD_AGGR_MASK_DEF, }; /* Platform hotplug MSN21xx system family data */ +static struct mlxreg_core_item mlxplat_mlxcpld_msn21xx_items[] = { + { + .data = mlxplat_mlxcpld_default_pwr_items_data, + .aggr_mask = MLXPLAT_CPLD_AGGR_PWR_MASK_DEF, + .reg = MLXPLAT_CPLD_LPC_REG_PWR_OFFSET, + .mask = MLXPLAT_CPLD_PWR_MASK, + .count = ARRAY_SIZE(mlxplat_mlxcpld_pwr), + .inversed = 0, + .health = false, + }, +}; + static -struct mlxreg_hotplug_platform_data mlxplat_mlxcpld_msn21xx_data = { - .top_aggr_offset = MLXPLAT_CPLD_LPC_REG_AGGR_ADRR, - .top_aggr_mask = MLXPLAT_CPLD_AGGR_MASK_MSN21XX, - .top_aggr_pwr_mask = MLXPLAT_CPLD_AGGR_MASK_MSN21XX, - .pwr_reg_offset = MLXPLAT_CPLD_LPC_REG_PWR_ADRR, - .pwr_mask = MLXPLAT_CPLD_PWR_MASK, - .pwr_count = ARRAY_SIZE(mlxplat_mlxcpld_pwr), +struct mlxreg_core_hotplug_platform_data mlxplat_mlxcpld_msn21xx_data = { + .items = mlxplat_mlxcpld_msn21xx_items, + .counter = ARRAY_SIZE(mlxplat_mlxcpld_msn21xx_items), + .cell = MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET, + .mask = MLXPLAT_CPLD_AGGR_MASK_DEF, +}; + +struct mlxplat_mlxcpld_regmap_context { + void __iomem *base; +}; + +static struct mlxplat_mlxcpld_regmap_context mlxplat_mlxcpld_regmap_ctx; + +static int +mlxplat_mlxcpld_reg_read(void *context, unsigned int reg, unsigned int *val) +{ + struct mlxplat_mlxcpld_regmap_context *ctx = context; + + *val = ioread8(ctx->base + reg); + return 0; +} + +static int +mlxplat_mlxcpld_reg_write(void *context, unsigned int reg, unsigned int val) +{ + struct mlxplat_mlxcpld_regmap_context *ctx = context; + + iowrite8(val, ctx->base + reg); + return 0; +} + +static const struct regmap_config mlxplat_mlxcpld_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 255, + .reg_read = mlxplat_mlxcpld_reg_read, + .reg_write = mlxplat_mlxcpld_reg_write, }; static struct resource mlxplat_mlxcpld_resources[] = { @@ -217,7 +335,7 @@ static struct resource mlxplat_mlxcpld_resources[] = { }; static struct platform_device *mlxplat_dev; -static struct mlxreg_hotplug_platform_data *mlxplat_hotplug; +static struct mlxreg_core_hotplug_platform_data *mlxplat_hotplug; static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi) { @@ -328,6 +446,21 @@ static int __init mlxplat_init(void) } } + mlxplat_mlxcpld_regmap_ctx.base = devm_ioport_map(&mlxplat_dev->dev, + mlxplat_lpc_resources[1].start, 1); + if (IS_ERR(mlxplat_mlxcpld_regmap_ctx.base)) { + err = PTR_ERR(mlxplat_mlxcpld_regmap_ctx.base); + goto fail_platform_mux_register; + } + + mlxplat_hotplug->regmap = devm_regmap_init(&mlxplat_dev->dev, NULL, + &mlxplat_mlxcpld_regmap_ctx, + &mlxplat_mlxcpld_regmap_config); + if (IS_ERR(mlxplat_hotplug->regmap)) { + err = PTR_ERR(mlxplat_hotplug->regmap); + goto fail_platform_mux_register; + } + priv->pdev_hotplug = platform_device_register_resndata( &mlxplat_dev->dev, "mlxreg-hotplug", PLATFORM_DEVID_NONE, diff --git a/include/linux/platform_data/mlxreg.h b/include/linux/platform_data/mlxreg.h index ffbcb7886c62..fcdc707eab99 100644 --- a/include/linux/platform_data/mlxreg.h +++ b/include/linux/platform_data/mlxreg.h @@ -34,8 +34,11 @@ #ifndef __LINUX_PLATFORM_DATA_MLXREG_H #define __LINUX_PLATFORM_DATA_MLXREG_H +#define MLXREG_CORE_LABEL_MAX_SIZE 32 + /** * struct mlxreg_hotplug_device - I2C device data: + * * @adapter: I2C device adapter; * @client: I2C device client; * @brdinfo: device board information; @@ -47,52 +50,95 @@ struct mlxreg_hotplug_device { struct i2c_adapter *adapter; struct i2c_client *client; - struct i2c_board_info brdinfo; + struct i2c_board_info *brdinfo; int nr; }; /** - * struct mlxreg_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; + * struct mlxreg_core_data - attributes control data: + * + * @label: attribute label; + * @label: attribute register offset; + * @reg: attribute register; + * @mask: attribute access mask; + * @mode: access mode; + * @bit: attribute effective bit; + * @np - pointer to node platform associated with attribute; + * @hpdev - hotplug device data; + * @health_cntr: dynamic device health indication counter; + * @attached: true if device has been attached after good health indication; + */ +struct mlxreg_core_data { + char label[MLXREG_CORE_LABEL_MAX_SIZE]; + u32 reg; + u32 mask; + u32 bit; + umode_t mode; + struct device_node *np; + struct mlxreg_hotplug_device hpdev; + u8 health_cntr; + bool attached; +}; + +/** + * struct mlxreg_core_item - same type components controlled by the driver: + * + * @data: component data; + * @aggr_mask: group aggregation mask; + * @reg: group interrupt status register; + * @mask: group interrupt mask; + * @cache: last status value for elements fro the same group; + * @count: number of available elements in the group; + * @ind: element's index inside the group; + * @inversed: if 0: 0 for signal status is OK, if 1 - 1 is OK; + * @health: true if device has health indication, false in other case; + */ +struct mlxreg_core_item { + struct mlxreg_core_data *data; + u32 aggr_mask; + u32 reg; + u32 mask; + u32 cache; + u8 count; + u8 ind; + u8 inversed; + u8 health; +}; + +/** + * struct mlxreg_core_platform_data - platform data: + * + * @led_data: led private data; + * @regmap: register map of parent device; + * @counter: number of led instances; + */ +struct mlxreg_core_platform_data { + struct mlxreg_core_data *data; + void *regmap; + int counter; +}; + +/** + * struct mlxreg_core_hotplug_platform_data - hotplug platform data: * - * 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. + * @items: same type components with the hotplug capability; + * @irq: platform interrupt number; + * @regmap: register map of parent device; + * @counter: number of the components with the hotplug capability; + * @cell: location of top aggregation interrupt register; + * @mask: top aggregation interrupt common mask; + * @cell_low: location of low aggregation interrupt register; + * @mask_low: low aggregation interrupt common mask; */ -struct mlxreg_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 mlxreg_hotplug_device *psu; - u8 top_aggr_pwr_mask; - u16 pwr_reg_offset; - u8 pwr_mask; - u8 pwr_count; - struct mlxreg_hotplug_device *pwr; - u8 top_aggr_fan_mask; - u16 fan_reg_offset; - u8 fan_mask; - u8 fan_count; - struct mlxreg_hotplug_device *fan; +struct mlxreg_core_hotplug_platform_data { + struct mlxreg_core_item *items; + int irq; + void *regmap; + int counter; + u32 cell; + u32 mask; + u32 cell_low; + u32 mask_low; }; #endif /* __LINUX_PLATFORM_DATA_MLXREG_H */ -- cgit v1.2.3