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c6acad68eb
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 <vadimp@mellanox.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> [dvhart: spelling corrections, refactor device node introduction] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
145 lines
4.7 KiB
C
145 lines
4.7 KiB
C
/*
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* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2017 Vadim Pasternak <vadimp@mellanox.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __LINUX_PLATFORM_DATA_MLXREG_H
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#define __LINUX_PLATFORM_DATA_MLXREG_H
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#define MLXREG_CORE_LABEL_MAX_SIZE 32
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/**
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* struct mlxreg_hotplug_device - I2C device data:
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*
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* @adapter: I2C device adapter;
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* @client: I2C device client;
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* @brdinfo: device board information;
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* @nr: I2C device adapter number, to which device is to be attached;
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*
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* Structure represents I2C hotplug device static data (board topology) and
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* dynamic data (related kernel objects handles).
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*/
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struct mlxreg_hotplug_device {
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struct i2c_adapter *adapter;
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struct i2c_client *client;
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struct i2c_board_info *brdinfo;
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int nr;
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};
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/**
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* struct mlxreg_core_data - attributes control data:
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*
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* @label: attribute label;
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* @label: attribute register offset;
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* @reg: attribute register;
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* @mask: attribute access mask;
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* @mode: access mode;
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* @bit: attribute effective bit;
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* @np - pointer to node platform associated with attribute;
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* @hpdev - hotplug device data;
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* @health_cntr: dynamic device health indication counter;
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* @attached: true if device has been attached after good health indication;
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*/
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struct mlxreg_core_data {
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char label[MLXREG_CORE_LABEL_MAX_SIZE];
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u32 reg;
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u32 mask;
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u32 bit;
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umode_t mode;
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struct device_node *np;
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struct mlxreg_hotplug_device hpdev;
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u8 health_cntr;
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bool attached;
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};
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/**
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* struct mlxreg_core_item - same type components controlled by the driver:
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*
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* @data: component data;
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* @aggr_mask: group aggregation mask;
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* @reg: group interrupt status register;
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* @mask: group interrupt mask;
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* @cache: last status value for elements fro the same group;
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* @count: number of available elements in the group;
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* @ind: element's index inside the group;
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* @inversed: if 0: 0 for signal status is OK, if 1 - 1 is OK;
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* @health: true if device has health indication, false in other case;
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*/
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struct mlxreg_core_item {
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struct mlxreg_core_data *data;
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u32 aggr_mask;
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u32 reg;
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u32 mask;
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u32 cache;
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u8 count;
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u8 ind;
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u8 inversed;
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u8 health;
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};
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/**
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* struct mlxreg_core_platform_data - platform data:
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*
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* @led_data: led private data;
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* @regmap: register map of parent device;
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* @counter: number of led instances;
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*/
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struct mlxreg_core_platform_data {
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struct mlxreg_core_data *data;
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void *regmap;
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int counter;
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};
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/**
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* struct mlxreg_core_hotplug_platform_data - hotplug platform data:
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*
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* @items: same type components with the hotplug capability;
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* @irq: platform interrupt number;
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* @regmap: register map of parent device;
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* @counter: number of the components with the hotplug capability;
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* @cell: location of top aggregation interrupt register;
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* @mask: top aggregation interrupt common mask;
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* @cell_low: location of low aggregation interrupt register;
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* @mask_low: low aggregation interrupt common mask;
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*/
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struct mlxreg_core_hotplug_platform_data {
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struct mlxreg_core_item *items;
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int irq;
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void *regmap;
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int counter;
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u32 cell;
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u32 mask;
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u32 cell_low;
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u32 mask_low;
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};
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#endif /* __LINUX_PLATFORM_DATA_MLXREG_H */
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