b05e92545d
Abstract brcmf_sdio_txpkt_prep and brcmf_sdio_txpkt_postp as a preparation of chained tx packets for host side tx glomming. Reviewed-by: Hante Meuleman <meuleman@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Franky Lin <frankyl@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
135 lines
5.1 KiB
C
135 lines
5.1 KiB
C
/*
|
|
* Copyright (c) 2013 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
|
|
|
|
/*
|
|
* Platform specific driver functions and data. Through the platform specific
|
|
* device data functions can be provided to help the brcmfmac driver to
|
|
* operate with the device in combination with the used platform.
|
|
*
|
|
* Use the platform data in the following (similar) way:
|
|
*
|
|
*
|
|
#include <brcmfmac_platform.h>
|
|
|
|
|
|
static void brcmfmac_power_on(void)
|
|
{
|
|
}
|
|
|
|
static void brcmfmac_power_off(void)
|
|
{
|
|
}
|
|
|
|
static void brcmfmac_reset(void)
|
|
{
|
|
}
|
|
|
|
static struct brcmfmac_sdio_platform_data brcmfmac_sdio_pdata = {
|
|
.power_on = brcmfmac_power_on,
|
|
.power_off = brcmfmac_power_off,
|
|
.reset = brcmfmac_reset
|
|
};
|
|
|
|
static struct platform_device brcmfmac_device = {
|
|
.name = BRCMFMAC_SDIO_PDATA_NAME,
|
|
.id = PLATFORM_DEVID_NONE,
|
|
.dev.platform_data = &brcmfmac_sdio_pdata
|
|
};
|
|
|
|
void __init brcmfmac_init_pdata(void)
|
|
{
|
|
brcmfmac_sdio_pdata.oob_irq_supported = true;
|
|
brcmfmac_sdio_pdata.oob_irq_nr = gpio_to_irq(GPIO_BRCMF_SDIO_OOB);
|
|
brcmfmac_sdio_pdata.oob_irq_flags = IORESOURCE_IRQ |
|
|
IORESOURCE_IRQ_HIGHLEVEL;
|
|
platform_device_register(&brcmfmac_device);
|
|
}
|
|
*
|
|
*
|
|
* 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.
|
|
*
|
|
* Explanation of the platform_data fields:
|
|
*
|
|
* 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
|
|
*
|
|
* power_on: This function is called by the brcmfmac 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 device can be powered down or otherwise be reset.
|
|
* So if an actual power_off is not supported but reset is then reset the device
|
|
* when this function gets called. This can be particularly useful for low power
|
|
* devices. If there is no use-case for this function (either power-down or
|
|
* reset) then provide NULL.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#define BRCMFMAC_SDIO_PDATA_NAME "brcmfmac_sdio"
|
|
|
|
struct brcmfmac_sdio_platform_data {
|
|
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 (*power_on)(void);
|
|
void (*power_off)(void);
|
|
void (*reset)(void);
|
|
};
|
|
|
|
#endif /* _LINUX_BRCMFMAC_PLATFORM_H */
|