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4d79289598
Platform data is only available for sdio. With this patch a new platform data structure is being used which allows for platform data for any device and configurable per device. This patch only switches to the new structure and adds support for SDIO devices. Reviewed-by: Arend Van Spriel <arend@broadcom.com> Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Signed-off-by: Hante Meuleman <meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
185 lines
6.6 KiB
C
185 lines
6.6 KiB
C
/*
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* Copyright (c) 201 Broadcom Corporation
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _LINUX_BRCMFMAC_PLATFORM_H
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#define _LINUX_BRCMFMAC_PLATFORM_H
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#define BRCMFMAC_PDATA_NAME "brcmfmac"
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#define BRCMFMAC_COUNTRY_BUF_SZ 4
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/*
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* Platform specific driver functions and data. Through the platform specific
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* device data functions and data can be provided to help the brcmfmac driver to
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* operate with the device in combination with the used platform.
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*/
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/**
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* Note: the brcmfmac can be loaded as module or be statically built-in into
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* the kernel. If built-in then do note that it uses module_init (and
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* module_exit) routines which equal device_initcall. So if you intend to
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* create a module with the platform specific data for the brcmfmac and have
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* it built-in to the kernel then use a higher initcall then device_initcall
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* (see init.h). If this is not done then brcmfmac will load without problems
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* but will not pickup the platform data.
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*
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* When the driver does not "detect" platform driver data then it will continue
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* without reporting anything and just assume there is no data needed. Which is
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* probably true for most platforms.
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*/
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/**
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* enum brcmf_bus_type - Bus type identifier. Currently SDIO, USB and PCIE are
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* supported.
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*/
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enum brcmf_bus_type {
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BRCMF_BUSTYPE_SDIO,
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BRCMF_BUSTYPE_USB,
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BRCMF_BUSTYPE_PCIE
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};
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/**
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* struct brcmfmac_sdio_pd - SDIO Device specific platform data.
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*
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* @txglomsz: SDIO txglom size. Use 0 if default of driver is to be
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* used.
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* @drive_strength: is the preferred drive_strength to be used for the SDIO
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* pins. If 0 then a default value will be used. This is
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* the target drive strength, the exact drive strength
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* which will be used depends on the capabilities of the
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* device.
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* @oob_irq_supported: does the board have support for OOB interrupts. SDIO
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* in-band interrupts are relatively slow and for having
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* less overhead on interrupt processing an out of band
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* interrupt can be used. If the HW supports this then
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* enable this by setting this field to true and configure
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* the oob related fields.
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* @oob_irq_nr,
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* @oob_irq_flags: the OOB interrupt information. The values are used for
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* registering the irq using request_irq function.
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* @broken_sg_support: flag for broken sg list support of SDIO host controller.
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* Set this to true if the SDIO host controller has higher
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* align requirement than 32 bytes for each scatterlist
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* item.
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* @sd_head_align: alignment requirement for start of data buffer.
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* @sd_sgentry_align: length alignment requirement for each sg entry.
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* @reset: This function can get called if the device communication
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* broke down. This functionality is particularly useful in
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* case of SDIO type devices. It is possible to reset a
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* dongle via sdio data interface, but it requires that
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* this is fully functional. This function is chip/module
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* specific and this function should return only after the
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* complete reset has completed.
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*/
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struct brcmfmac_sdio_pd {
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int txglomsz;
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unsigned int drive_strength;
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bool oob_irq_supported;
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unsigned int oob_irq_nr;
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unsigned long oob_irq_flags;
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bool broken_sg_support;
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unsigned short sd_head_align;
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unsigned short sd_sgentry_align;
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void (*reset)(void);
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};
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/**
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* struct brcmfmac_pd_cc_entry - Struct for translating user space country code
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* (iso3166) to firmware country code and
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* revision.
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*
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* @iso3166: iso3166 alpha 2 country code string.
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* @cc: firmware country code string.
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* @rev: firmware country code revision.
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*/
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struct brcmfmac_pd_cc_entry {
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char iso3166[BRCMFMAC_COUNTRY_BUF_SZ];
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char cc[BRCMFMAC_COUNTRY_BUF_SZ];
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s32 rev;
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};
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/**
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* struct brcmfmac_pd_cc - Struct for translating country codes as set by user
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* space to a country code and rev which can be used by
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* firmware.
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*
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* @table_size: number of entries in table (> 0)
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* @table: array of 1 or more elements with translation information.
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*/
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struct brcmfmac_pd_cc {
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int table_size;
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struct brcmfmac_pd_cc_entry table[0];
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};
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/**
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* struct brcmfmac_pd_device - Device specific platform data. (id/rev/bus_type)
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* is the unique identifier of the device.
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*
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* @id: ID of the device for which this data is. In case of SDIO
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* or PCIE this is the chipid as identified by chip.c In
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* case of USB this is the chipid as identified by the
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* device query.
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* @rev: chip revision, see id.
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* @bus_type: The type of bus. Some chipid/rev exist for different bus
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* types. Each bus type has its own set of settings.
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* @feature_disable: Bitmask of features to disable (override), See feature.c
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* in brcmfmac for details.
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* @country_codes: If available, pointer to struct for translating country
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* codes.
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* @bus: Bus specific (union) device settings. Currently only
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* SDIO.
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*/
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struct brcmfmac_pd_device {
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unsigned int id;
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unsigned int rev;
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enum brcmf_bus_type bus_type;
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unsigned int feature_disable;
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struct brcmfmac_pd_cc *country_codes;
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union {
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struct brcmfmac_sdio_pd sdio;
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} bus;
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};
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/**
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* struct brcmfmac_platform_data - BRCMFMAC specific platform data.
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*
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* @power_on: This function is called by the brcmfmac driver when the module
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* gets loaded. This can be particularly useful for low power
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* devices. The platform spcific routine may for example decide to
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* power up the complete device. If there is no use-case for this
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* function then provide NULL.
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* @power_off: This function is called by the brcmfmac when the module gets
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* unloaded. At this point the devices can be powered down or
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* otherwise be reset. So if an actual power_off is not supported
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* but reset is supported by the devices then reset the devices
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* when this function gets called. This can be particularly useful
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* for low power devices. If there is no use-case for this
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* function then provide NULL.
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*/
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struct brcmfmac_platform_data {
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void (*power_on)(void);
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void (*power_off)(void);
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char *fw_alternative_path;
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int device_count;
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struct brcmfmac_pd_device devices[0];
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};
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#endif /* _LINUX_BRCMFMAC_PLATFORM_H */
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