linux-toradex.git/include/linux/mmc/core.h, branch v5.10-rc3

mmc: core: Re-work the code for eMMC sanitize

2020-03-26T13:45:31+00:00

The error path for sanitize operations that completes with -ETIMEDOUT, is
tightly coupled with the internal request handling code of the core. More
precisely, mmc_wait_for_req_done() checks for specific sanitize errors.
This is not only inefficient as it affects all types of requests, but also
hackish.

Therefore, let's improve the behaviour by moving the error path out of the
mmc core. To do that, retuning needs to be held while running the sanitize
operation.

Moreover, to avoid exporting unnecessary symbols to the mmc block module,
let's move the code into the mmc_ops.c file. While updating the actual
code, let's also take the opportunity to clean up some of the mess around
it.

Signed-off-by: Ulf Hansson 
Link: https://lore.kernel.org/r/20200316152152.15122-1-ulf.hansson@linaro.org

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Enrico Weigelt 
Reviewed-by: Kate Stewart 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman

mmc: core: Export a function mmc_sw_reset() to allow soft reset of cards

2018-05-08T07:33:42+00:00

It's rather common that a firmware is loaded into an SDIO func device
memory, by the corresponding SDIO func driver during ->probe() time.

However, to actually start running the new firmware, sometimes a soft reset
(no power cycle) and a re-initialization of the card is needed. This is for
example the case with the Espressif ESP8089 WiFi chips, when connected to
an SDIO interface.

To cope with this scenario, let's add a new exported function,
mmc_sw_reset(), which may be called when a soft reset and re-initialization
of the card are needed.

The mmc_sw_reset() is implemented on top of a new bus ops callback, similar
to how the mmc_hw_reset() has been implemented.

Signed-off-by: Ulf Hansson 
Tested-by: Quentin Schulz 
Reviewed-by: Shawn Lin

mmc: core: Move mmc_start_areq() declaration

2017-08-30T13:03:53+00:00

mmc_start_areq() is an internal mmc core API. Move the declaration
accordingly.

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: host: Add CQE interface

2017-08-30T13:03:33+00:00

Add CQE host operations, capabilities, and host members.

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: core: Add members to mmc_request and mmc_data for CQE's

2017-08-30T12:02:01+00:00

Most of the information needed to issue requests to a CQE is already in
struct mmc_request and struct mmc_data. Add data block address, some flags,
and the task id (tag), and allow for cmd being NULL which it is for CQE
tasks.

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: core: rename mmc_start_req() to *areq()

2017-02-13T12:20:58+00:00

With the coexisting __mmc_start_request(), mmc_start_request()
and __mmc_start_req() it is a bit confusing that mmc_start_req()
actually does not start a normal request, but an asynchronous
request.

Rename it to mmc_start_areq() to make it explicit what the
function is doing, also fix the kerneldoc for this function
while we're at it.

Signed-off-by: Linus Walleij 
Signed-off-by: Ulf Hansson

mmc: core: Don't use extern declarations of public mmc functions

2017-02-13T12:20:25+00:00

Using extern when declaring functions in the public header, core.h, is
redundant. Let's just remove the use of it.

Signed-off-by: Ulf Hansson 
Reviewed-by: Linus Walleij 
Reviewed-by: Shawn Lin

mmc: core: Move erase/trim/discard defines from public core.h to mmc.h

2017-02-13T12:20:22+00:00

As the public mmc.h header already contains similar defines for other mmc
commands and arguments, let's move those for erase/trim/discard into here
as well.

Signed-off-by: Ulf Hansson 
Reviewed-by: Linus Walleij 
Reviewed-by: Shawn Lin

mmc: core: Move some host specific public functions to host.h

2017-02-13T12:20:21+00:00

Ideally the public mmc header file, core.h, shouldn't contain interfaces
particularly intended to be used by host drivers. Instead those should
remain in the host.h header file. Therefore, let's move a couple functions
from core.h to host.h.

Signed-off-by: Ulf Hansson 
Reviewed-by: Linus Walleij 
Reviewed-by: Shawn Lin