/*
* Copyright (c) 2016 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _LINUX_BRCMFMAC_PLATFORM_H
#define _LINUX_BRCMFMAC_PLATFORM_H
#define BRCMFMAC_PDATA_NAME "brcmfmac"
#define BRCMFMAC_COUNTRY_BUF_SZ 4
/*
* Platform specific driver functions and data. Through the platform specific
* device data functions and data can be provided to help the brcmfmac driver to
* operate with the device in combination with the used platform.
*/
/**
* Note: the brcmfmac can be loaded as module or be statically built-in into
* the kernel. If built-in then do note that it uses module_init (and
* module_exit) routines which equal device_initcall. So if you intend to
* create a module with the platform specific data for the brcmfmac and have
* it built-in to the kernel then use a higher initcall then device_initcall
* (see init.h). If this is not done then brcmfmac will load without problems
* but will not pickup the platform data.
*
* When the driver does not "detect" platform driver data then it will continue
* without reporting anything and just assume there is no data needed. Which is
* probably true for most platforms.
*/
/**
* enum brcmf_bus_type - Bus type identifier. Currently SDIO, USB and PCIE are
* supported.
*/
enum brcmf_bus_type {
BRCMF_BUSTYPE_SDIO,
BRCMF_BUSTYPE_USB,
BRCMF_BUSTYPE_PCIE
};
/**
* struct brcmfmac_sdio_pd - SDIO Device specific platform data.
*
* @txglomsz: SDIO txglom size. Use 0 if default of driver is to be
* used.
* @drive_strength: is the preferred drive_strength to be used for the SDIO
* pins. If 0 then a default value will be used. This is
* the target drive strength, the exact drive strength
* which will be used depends on the capabilities of the
* device.
* @oob_irq_supported: does the board have support for OOB interrupts. SDIO
* in-band interrupts are relatively slow and for having
* less overhead on interrupt processing an out of band
* interrupt can be used. If the HW supports this then
* enable this by setting this field to true and configure
* the oob related fields.
* @oob_irq_nr,
* @oob_irq_flags: the OOB interrupt information. The values are used for
* registering the irq using request_irq function.
* @broken_sg_support: flag for broken sg list support of SDIO host controller.
* Set this to true if the SDIO host controller has higher
* align requirement than 32 bytes for each scatterlist
* item.
* @sd_head_align: alignment requirement for start of data buffer.
* @sd_sgentry_align: length alignment requirement for each sg entry.
* @reset: This function can get called if the device communication
* broke down. This functionality is particularly useful in
* case of SDIO type devices. It is possible to reset a
* dongle via sdio data interface, but it requires that
* this is fully functional. This function is chip/module
* specific and this function should return only after the
* complete reset has completed.
*/
struct brcmfmac_sdio_pd {
int txglomsz;
unsigned int drive_strength;
bool oob_irq_supported;
unsigned int oob_irq_nr;
unsigned long oob_irq_flags;
bool broken_sg_support;
unsigned short sd_head_align;
unsigned short sd_sgentry_align;
void (*reset)(void);
};
/**
* struct brcmfmac_pd_cc_entry - Struct for translating user space country code
* (iso3166) to firmware country code and
* revision.
*
* @iso3166: iso3166 alpha 2 country code string.
* @cc: firmware country code string.
* @rev: firmware country code revision.
*/
struct brcmfmac_pd_cc_entry {
char iso3166[BRCMFMAC_COUNTRY_BUF_SZ];
char cc[BRCMFMAC_COUNTRY_BUF_SZ];
s32 rev;
};
/**
* struct brcmfmac_pd_cc - Struct for translating country codes as set by user
* space to a country code and rev which can be used by
* firmware.
*
* @table_size: number of entries in table (> 0)
* @table: array of 1 or more elements with translation information.
*/
struct brcmfmac_pd_cc {
int table_size;
struct brcmfmac_pd_cc_entry table[];
};
/**
* struct brcmfmac_pd_device - Device specific platform data. (id/rev/bus_type)
* is the unique identifier of the device.
*
* @id: ID of the device for which this data is. In case of SDIO
* or PCIE this is the chipid as identified by chip.c In
* case of USB this is the chipid as identified by the
* device query.
* @rev: chip revision, see id.
* @bus_type: The type of bus. Some chipid/rev exist for different bus
* types. Each bus type has its own set of settings.
* @feature_disable: Bitmask of features to disable (override), See feature.c
* in brcmfmac for details.
* @country_codes: If available, pointer to struct for translating country
* codes.
* @bus: Bus specific (union) device settings. Currently only
* SDIO.
*/
struct brcmfmac_pd_device {
unsigned int id;
unsigned int rev;
enum brcmf_bus_type bus_type;
unsigned int feature_disable;
struct brcmfmac_pd_cc *country_codes;
union {
struct brcmfmac_sdio_pd sdio;
} bus;
};
/**
* struct brcmfmac_platform_data - BRCMFMAC specific platform data.
*
* @power_on: This function is called by the brcmfmac driver when the module
* gets loaded. This can be particularly useful for low power
* devices. The platform spcific routine may for example decide to
* power up the complete device. If there is no use-case for this
* function then provide NULL.
* @power_off: This function is called by the brcmfmac when the module gets
* unloaded. At this point the devices can be powered down or
* otherwise be reset. So if an actual power_off is not supported
* but reset is supported by the devices then reset the devices
* when this function gets called. This can be particularly useful
* for low power devices. If there is no use-case for this
* function then provide NULL.
*/
struct brcmfmac_platform_data {
void (*power_on)(void);
void (*power_off)(void);
char *fw_alternative_path;
int device_count;
struct brcmfmac_pd_device devices[];
};
#endif /* _LINUX_BRCMFMAC_PLATFORM_H */
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