kernel/git/stable/linux.git/drivers/fsi/fsi-master.h, branch master

fsi: Move fsi_slave structure definition to header

2023-08-09T06:11:59+00:00

Some FSI drivers may have need of the slave definition, so move it to a header file. Also use one macro for obtaining a pointer to the fsi_master structure. Signed-off-by: Eddie James Link: https://lore.kernel.org/r/20230612195657.245125-2-eajames@linux.ibm.com Signed-off-by: Joel Stanley

fsi: Fix typo in comment

2022-09-27T07:27:17+00:00

Spelling mistake in comment. Reported-by: k2ci Signed-off-by: Luo Xueqin Link: https://lore.kernel.org/r/20220705152757.27843-1-luoxueqin66@gmail.com Signed-off-by: Joel Stanley

fsi: master: Add boolean parameter to link_enable function

2020-09-10T02:52:47+00:00

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

fsi: Move defines to common header

2019-11-08T10:23:40+00:00

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

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174

2019-05-30T18:26:41+00:00

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 details extracted 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

fsi: Prevent multiple concurrent rescans

2018-07-26T23:58:12+00:00

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

fsi: Move various master definitions to a common header

2018-07-12T02:06:02+00:00

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

fsi: Add mechanism to set the tSendDelay and tEchoDelay values

2018-07-12T01:59:13+00:00

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 ---

fsi: master: Clarify master lifetimes & fix use-after-free in hub master

2018-03-14T18:11:01+00:00

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

fsi: Add fsi_master_rescan()

2018-03-14T18:11:00+00:00

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