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linux/include/linux/fsi.h

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 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 <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-27 08:55:21 +02:00
drivers/fsi: Add empty fsi bus definitions This change adds the initial (empty) fsi bus definition, and introduces drivers/fsi/. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-01 10:53:41 -06:00
drivers/fsi: Add device & driver definitions Add structs for fsi devices & drivers, and struct device conversion functions. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-01 10:53:42 -06:00
drivers/fsi: add driver to device matches Driver bind to devices based on the engine types & (optional) versions. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-01 10:53:43 -06:00
drivers/fsi: scan slaves & register devices Now that we have fsi_slave devices, scan each for endpoints, and register them on the fsi bus. Includes contributions from Christopher Bostic <cbostic@linux.vnet.ibm.com>. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-06 16:08:44 -05:00
drivers/fsi: Add device & driver definitions Add structs for fsi devices & drivers, and struct device conversion functions. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-01 10:53:42 -06:00
fsi: Provide thin wrappers around dev_[gs]et_data() for fsi devices Similar to wrappers for other subsystems provide inline functions for fsi devices to store driver data. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Acked-by: Eddie James <eajames@linux.ibm.com> Link: https://patch.msgid.link/5de7a7cbb30918b3503235130bd8aa1a9a63d71c.1765279318.git.u.kleine-koenig@baylibre.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-12-09 12:40:27 +01:00
drivers/fsi: Add device read/write/peek API This change introduces the fsi device API: simple read, write and peek accessors for the devices' address spaces. Includes contributions from Christopher Bostic <cbostic@linux.vnet.ibm.com> and Edward A. James <eajames@us.ibm.com>. Signed-off-by: Edward A. James <eajames@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-06 16:08:45 -05:00
drivers/fsi: add driver to device matches Driver bind to devices based on the engine types & (optional) versions. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-01 10:53:43 -06:00
drivers/fsi: Add device & driver definitions Add structs for fsi devices & drivers, and struct device conversion functions. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-01 10:53:42 -06:00
fsi: Create bus specific probe and remove functions Introduce a bus specific probe and remove function. For now this only allows to get rid of a cast of the generic device to an fsi device in the drivers and changes the remove prototype to return void---a non-zero return value is ignored anyhow. The objective is to get rid of users of struct device callbacks .probe(), .remove() and .shutdown() to eventually remove these. Until all fsi drivers are converted this results in a runtime warning about the drivers needing an update because there is a bus probe function and a driver probe function. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Acked-by: Eddie James <eajames@linux.ibm.com> Link: https://patch.msgid.link/3b53adb75a5ae7894736d46cb6eb85f5ef36520e.1765279318.git.u.kleine-koenig@baylibre.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-12-09 12:40:31 +01:00
drivers/fsi: add driver to device matches Driver bind to devices based on the engine types & (optional) versions. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-01 10:53:43 -06:00
drivers/fsi: Add device & driver definitions Add structs for fsi devices & drivers, and struct device conversion functions. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-01 10:53:42 -06:00
driver core: have match() callback in struct bus_type take a const * In the match() callback, the struct device_driver * should not be changed, so change the function callback to be a const *. This is one step of many towards making the driver core safe to have struct device_driver in read-only memory. Because the match() callback is in all busses, all busses are modified to handle this properly. This does entail switching some container_of() calls to container_of_const() to properly handle the constant *. For some busses, like PCI and USB and HV, the const * is cast away in the match callback as those busses do want to modify those structures at this point in time (they have a local lock in the driver structure.) That will have to be changed in the future if they wish to have their struct device * in read-only-memory. Cc: Rafael J. Wysocki <rafael@kernel.org> Reviewed-by: Alex Elder <elder@kernel.org> Acked-by: Sumit Garg <sumit.garg@linaro.org> Link: https://lore.kernel.org/r/2024070136-wrongdoer-busily-01e8@gregkh Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-07-01 14:07:37 +02:00
drivers/fsi: Add device & driver definitions Add structs for fsi devices & drivers, and struct device conversion functions. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-01 10:53:42 -06:00
drivers/fsi: Add client driver register utilities Add driver_register and driver_unregister wrappers for FSI. Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-06 16:08:48 -05:00
drivers/fsi: expose direct-access slave API Allow drivers to access the slave address ranges. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-06 16:08:50 -05:00
fsi: Add new central chardev support The various FSI devices (sbefifo, occ, scom, more to come) currently use misc devices. This is problematic as the minor device space for misc is limited and there can be a lot of them. Also it limits our ability to move them to a dedicated /dev/fsi directory or to be smart about device naming and numbering. It also means we have IDAs on every single of these drivers This creates a common fsi "device_type" for the optional /dev/fsi grouping and a dev_t allocator for all FSI devices. "Legacy" devices get to use a backward compatible numbering scheme (as long as chip id <16 and there's only one copy of a given unit type per chip). A single major number and a single IDA are shared for all FSI devices. This doesn't convert the FSI device drivers to use the new scheme yet, they will be converted individually. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2018-06-20 15:22:52 +10:00
drivers/fsi: Add empty fsi bus definitions This change adds the initial (empty) fsi bus definition, and introduces drivers/fsi/. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-01 10:53:41 -06:00