10 Sep, 2020
1 commit
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Add the ability to disable a link with a boolean parameter to the
link_enable function. This is necessary so that the master can disable
links that it isn't using; for example, links to slaves that fail
initialization.Signed-off-by: Eddie James
Signed-off-by: Joel Stanley
08 Nov, 2019
1 commit
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The FSI master registers are common to the hub and AST2600 master (and
the FSP2, if someone was to upstream a driver for that).Add defines to the fsi-master.h header, and introduce headings to
delineate the existing low level details.Acked-by: Andrew Jeffery
Acked-by: Jeremy Kerr
Signed-off-by: Joel Stanley
Link: https://lore.kernel.org/r/20191108051945.7109-8-joel@jms.id.au
Signed-off-by: Greg Kroah-Hartman
31 May, 2019
1 commit
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Based on 1 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
distributed in the hope that it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more detailsextracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 655 file(s).
Signed-off-by: Thomas Gleixner
Reviewed-by: Allison Randal
Reviewed-by: Kate Stewart
Reviewed-by: Richard Fontana
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman
27 Jul, 2018
1 commit
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The bus scanning process isn't terribly good at parallel attempts
at rescanning the same bus. Let's have a per-master mutex protecting
the scanning process.Signed-off-by: Benjamin Herrenschmidt
12 Jul, 2018
2 commits
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This moves the definitions for various protocol details
(message & response codes, delays etc...) out of
fsi-master-gpio.c to fsi-master.h in order to share them
with other master implementations.Signed-off-by: Benjamin Herrenschmidt
Reviewed-by: Joel Stanley -
Those values control the amount of "dummy" clocks between commands and
between a command and its response.This adds a way to configure them from sysfs (to be later extended to
defaults in the device-tree). The default remains 16 (the HW default).This is only supported if the backend supports the new link_config()
callback to configure the generation of those delays.Signed-off-by: Benjamin Herrenschmidt
Reviewed-by: Joel Stanley
---
15 Mar, 2018
2 commits
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Once we call fsi_master_unregister, the core will put_device,
potentially freeing the hub master. This change adds a comment
explaining the lifetime of an allocated fsi_master.We then add a reference from the driver to the hub master, so it stays
around until we've finished ->remove().Signed-off-by: Jeremy Kerr
Tested-by: Christopher Bostic
Signed-off-by: Joel Stanley
Signed-off-by: Greg Kroah-Hartman -
We'll want non-core fsi code to trigger a rescan, so introduce a
non-static fsi_master_rescan() function. Use this for the existing
unscan/scan behaviour too.Signed-off-by: Jeremy Kerr
Reviewed-by: Joel Stanley
Reviewed-by: Christopher Bostic
Signed-off-by: Joel Stanley
Signed-off-by: Greg Kroah-Hartman
09 Jun, 2017
2 commits
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For slaves that are behind a software-clocked master, we want FSI CFAMs
to run asynchronously to the FSI clock, so set up our slaves to be in
async mode.Signed-off-by: Jeremy Kerr
Signed-off-by: Christopher Bostic
Signed-off-by: Greg Kroah-Hartman -
Add a `struct fsi_master` to represent a FSI master controller.
FSI master drivers register one of these structs to provide
device-specific of the standard operations: read/write/term/break and
link control.Includes changes from Edward A. James & Jeremy Kerr
.Signed-off-by: Jeremy Kerr
Signed-off-by: Chris Bostic
Signed-off-by: Joel Stanley
Signed-off-by: Greg Kroah-Hartman