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2015-03-31HSI: cmt_speech: Add cmt-speech driverKai Vehmanen3-0/+1467
Introduces the cmt-speech driver, which implements a character device interface for transferring speech data frames over HSI/SSI. The driver is used to exchange voice/speech data between the Nokia N900/N950/N9's modem and its cpu. Signed-off-by: Kai Vehmanen <kai.vehmanen@nokia.com> Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com> Signed-off-by: Joni Lapilainen <joni.lapilainen@gmail.com> Since the original driver has been written for 2.6.28 some build fixes and general cleanups have been added by me: * fix build for 4.0 kernel * replace GFP_ATOMIC with GFP_KERNEL in cs_alloc_cmds() * add sanity check for CS_SET_WAKELINE ioctl * cleanup driver initialisation * rename driver to cmt-speech to be consistent with ssi-protocol driver * move cs-protocol.h to include/uapi/linux/hsi, since it describes a userspace API * replace hardcoded channels numbers with values provided via the HSI framework (e.g. coming from DT) Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi> Tested-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-02-28HSI: nokia-modem: fix error return codeJulia Lawall1-0/+1
Return a negative error code on failure. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier ret; expression e1,e2; @@ ( if (\(ret < 0\|ret != 0\)) { ... return ret; } | ret = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-04hsi: nokia-modem: fix uninitialized device pointerAaro Koskinen1-0/+1
modem->device was never initialized. This resulted in logs such as: [ 241.386322] (NULL device *): CMT rst line change detected Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-12-15Merge tag 'hsi-for-3.19' of ↵Linus Torvalds2-6/+5
git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi Pull HSI update from Sebastian Reichel: "Misc fixes in omap-ssi and nokia-modem drivers" * tag 'hsi-for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi: HSI: nokia-modem: fix error handling of irq_of_parse_and_map HSI: nokia-modem: setup default value for pm parameter HSI: omap_ssi_port: Don't print uninitialized err HSI: remove deprecated IRQF_DISABLED
2014-12-14Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds2-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
2014-12-04hsi / OMAP / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PMRafael J. Wysocki2-2/+2
After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks depending on CONFIG_PM_RUNTIME may now be changed to depend on CONFIG_PM. Do that for the omap_ssi driver. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-By: Sebastian Reichel <sre@kernel.org>
2014-11-14HSI: nokia-modem: fix error handling of irq_of_parse_and_mapDmitry Torokhov1-2/+2
Return value of irq_of_parse_and_map() is unsigned int, with 0 indicating failure, so testing for negative result never works. Signed-off-by: Dmitry Torokhov <dtor@chromium.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-11-14HSI: nokia-modem: setup default value for pm parameterSebastian Reichel1-1/+1
The module documents, that 1 is the default, but it actually isn't. This updates the module to use pm=1 as default. Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-10-20hsi: controllers: drop owner assignment from platform_driversWolfram Sang2-2/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20HSI: omap_ssi_port: Don't print uninitialized errSebastian Reichel1-2/+1
Do not print err variable, that has nothing to do with the error. This fixes a warning, that is printed at build time: drivers/hsi/controllers/omap_ssi_port.c: In function ‘ssi_port_probe’: drivers/hsi/controllers/omap_ssi_port.c:1121:10: warning: ‘err’ may be used uninitialized in this function [-Wuninitialized] Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-10-03HSI: remove deprecated IRQF_DISABLEDMichael Opdenacker1-1/+1
Remove the use of the IRQF_DISABLED flag from drivers/hsi/clients/nokia-modem.c It's a NOOP since 2.6.35 and it will be removed soon. Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-08-06Merge tag 'hsi-for-3.17' of ↵Linus Torvalds3-15/+16
git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi Pull HSI changes from Sebastian Reichel: "Misc fixes in SSI related drivers" * tag 'hsi-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi: HSI: omap_ssi: Fix return value check in ssi_debug_add_ctrl() HSI: omap_ssi_port: Fix return value check in ssi_debug_add_port() HSI: ssi_protocol: Fix sparse non static symbol warning drivers/hsi/controllers/omap_ssi{,_port}.c: fix failure checks
2014-07-31HSI: omap_ssi: Fix return value check in ssi_debug_add_ctrl()Wei Yongjun1-4/+4
In case of error, the function debugfs_create_*() returns NULL pointer not ERR_PTR() if debugfs is enabled. The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-07-31HSI: omap_ssi_port: Fix return value check in ssi_debug_add_port()Wei Yongjun1-4/+4
In case of error, the function debugfs_create_*() returns NULL pointer not ERR_PTR() if debugfs is enabled. The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-07-20HSI: ssi_protocol: Fix sparse non static symbol warningWei Yongjun1-1/+1
Fixes the following sparse warning: drivers/hsi/clients/ssi_protocol.c:904:6: warning: symbol 'ssip_port_event' was not declared. Should it be static? Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-07-17drivers/hsi/controllers/omap_ssi{,_port}.c: fix failure checksAndrey Utkin2-6/+7
1. [linux-3.16-rc5/drivers/hsi/controllers/omap_ssi.c:357]: (style) Checking if unsigned variable 'gdd_irq' is less than zero. Source code is omap_ssi->gdd_irq = platform_get_irq_byname(pd, "gdd_mpu"); if (omap_ssi->gdd_irq < 0) { 2. [linux-3.16-rc5/drivers/hsi/controllers/omap_ssi_port.c:1017]: (style) Checking if unsigned variable 'irq' is less than zero. Source code is omap_port->irq = platform_get_irq(pd, 0); if (omap_port->irq < 0) { Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=80441 Reported-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Andrey Utkin <andrey.krieger.utkin@gmail.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-07-15net: set name_assign_type in alloc_netdev()Tom Gundersen1-1/+1
Extend alloc_netdev{,_mq{,s}}() to take name_assign_type as argument, and convert all users to pass NET_NAME_UNKNOWN. Coccinelle patch: @@ expression sizeof_priv, name, setup, txqs, rxqs, count; @@ ( -alloc_netdev_mqs(sizeof_priv, name, setup, txqs, rxqs) +alloc_netdev_mqs(sizeof_priv, name, NET_NAME_UNKNOWN, setup, txqs, rxqs) | -alloc_netdev_mq(sizeof_priv, name, setup, count) +alloc_netdev_mq(sizeof_priv, name, NET_NAME_UNKNOWN, setup, count) | -alloc_netdev(sizeof_priv, name, setup) +alloc_netdev(sizeof_priv, name, NET_NAME_UNKNOWN, setup) ) v9: move comments here from the wrong commit Signed-off-by: Tom Gundersen <teg@jklm.no> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-05hsi: omap_ssi_port: use normal module refcountingArnd Bergmann1-2/+2
The ref_module() function is used for internal housekeeping of the module code, it's not normally used by subsystems or device drivers, and the use of ref_module in the omap_ssi_port driver causes a link build error when modules are disabled: hsi/controllers/omap_ssi_port.c: In function 'ssi_port_probe': hsi/controllers/omap_ssi_port.c:1119:2: error: implicit declaration of function 'ref_module' [-Werror=implicit-function-declaration] This changes the omap_ssi_port driver to use try_module_get() and module_put() instead, which is the normal way to ensure that the driver providing a device used in another module does not go away. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Sebastian Reichel <sre@kernel.org> Cc: Carlos Chinea <carlos.chinea@nokia.com> Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-06-03HSI: fix omap ssi driver dependencyArnd Bergmann1-1/+1
The SSI protocol implementation has an incorrect dependency on the OMAP_SSI driver, which allows SSI to be built-in while the underlying OMAP_SSI implementation is a loadable module, causing a link error. This changes the dependency to the simpler 'depends on OMAP_SSI' that also ensures that SSI-protocol can only be a module if OMAP_SSI is not built-in. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Sebastian Reichel <sre@kernel.org> Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-05-16HSI: Introduce Nokia N900 modem driverSebastian Reichel3-0/+295
The Nokia N900's modem is connected via Synchronous Serial Interface (SSI), which is a legacy version of MIPI's High-speed Synchronous Serial Interface (HSI). The handles the GPIOs for enabling and resetting the modem and instanciates ssi-protocol for data exchange. It does not yet support exchanging voice data with the modem. Signed-off-by: Sebastian Reichel <sre@kernel.org> Reviewed-by: Pavel Machek <pavel@ucw.cz> Tested-By: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
2014-05-16HSI: Introduce driver for SSI ProtocolSebastian Reichel3-1/+1201
This adds a driver for the SSI McSAAB protocol as used in the Nokia N900. Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com> Signed-off-by: Sebastian Reichel <sre@kernel.org> Tested-By: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
2014-05-16HSI: Introduce OMAP SSI driverSebastian Reichel8-0/+2388
Add OMAP SSI driver to the HSI subsystem. The Synchronous Serial Interface (SSI) is a legacy version of HSI. As in the case of HSI, it is mainly used to connect Application engines (APE) with cellular modem engines (CMT) in cellular handsets. It provides a multichannel, full-duplex, multi-core communication with no reference clock. The OMAP SSI block is capable of reaching speeds of 110 Mbit/s. Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com> Signed-off-by: Sebastian Reichel <sre@kernel.org> Tested-By: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
2014-05-16HSI: Add common DT binding for HSI client devicesSebastian Reichel1-2/+206
Implement and document generic DT bindings for HSI clients. Signed-off-by: Sebastian Reichel <sre@kernel.org> Reviewed-by: Pavel Machek <pavel@ucw.cz> Tested-By: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
2014-05-16HSI: export method to (un)register clientsSebastian Reichel1-3/+8
Expose method for registering and unregistering HSI clients, so that client drivers can register other client drivers. This is useful for HSI drivers, which want to use the functionality of other HSI drivers. For example the N900 modem driver can load HSI drivers for mcsaab protocol and speech protocol. Signed-off-by: Sebastian Reichel <sre@kernel.org> Reviewed-by: Pavel Machek <pavel@ucw.cz> Tested-By: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
2014-05-16HSI: Add channel resource support to HSI clientsSebastian Reichel2-7/+51
Make HSI channel ids platform data, which can be provided by platform data. Signed-off-by: Sebastian Reichel <sre@kernel.org> Tested-By: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
2014-05-16HSI: method to unregister clients from an hsi portSebastian Reichel1-0/+10
This exports a method to unregister all clients from an hsi port. Signed-off-by: Sebastian Reichel <sre@kernel.org> Reviewed-by: Pavel Machek <pavel@ucw.cz> Tested-By: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
2014-05-04HSI: hsi-char: fix driver for multiport scenariosSebastian Reichel1-1/+1
Fix return code check of alloc_chrdev_region, which returns 0 on success. Signed-off-by: Sebastian Reichel <sre@kernel.org> Reviewed-by: Pavel Machek <pavel@ucw.cz>
2013-10-16hsi: convert bus code to use dev_groupsGreg Kroah-Hartman1-4/+6
The dev_attrs field of struct bus_type is going away soon, dev_groups should be used instead. This converts the hsi code to use the correct field. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-03drivers: avoid format string in dev_set_nameKees Cook1-1/+1
Calling dev_set_name with a single paramter causes it to be handled as a format string. Many callers are passing potentially dynamic string content, so use "%s" in those cases to avoid any potential accidents, including wrappers like device_create*() and bdi_register(). Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-01hsi: fix kernel-doc warningsRandy Dunlap1-1/+1
Fix kernel-doc warnings in hsi files: Warning(include/linux/hsi/hsi.h:136): Excess struct/union/enum/typedef member 'e_handler' description in 'hsi_client' Warning(include/linux/hsi/hsi.h:136): Excess struct/union/enum/typedef member 'pclaimed' description in 'hsi_client' Warning(include/linux/hsi/hsi.h:136): Excess struct/union/enum/typedef member 'nb' description in 'hsi_client' Warning(drivers/hsi/hsi.c:434): No description found for parameter 'handler' Warning(drivers/hsi/hsi.c:434): Excess function parameter 'cb' description in 'hsi_register_port_event' Don't document "private:" fields with kernel-doc notation. If you want to leave them fully documented, that's OK, but then don't mark them as "private:". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Carlos Chinea <carlos.chinea@nokia.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-kernel@vger.kernel.org Cc: linux-omap@vger.kernel.org Acked-by: Nishanth Menon <nm@ti.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-03Drivers: misc: remove __dev* attributes.Greg Kroah-Hartman1-4/+4
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-04-23HSI: hsi_char: Remove max_data_size from sysfsCarlos Chinea1-1/+1
Remove max_data_size sysfs entry. Otherwise is possible to have a buffer overrun if its value is increased after the device is open. Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2012-04-23HSI: hsi: Rework hsi_event interfaceCarlos Chinea1-47/+54
Remove custom hack and make use of the notifier chain interfaces for delivering events from the ports to their associated clients. Clients that want to receive port events need to register their callbacks using hsi_register_port_event(). The callbacks can be called in interrupt context. Use hsi_unregestier_port_event() to undo the registration. Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2012-04-23HSI: hsi: Remove controllers and ports from the busCarlos Chinea1-19/+1
HSI controllers and ports do not belong to the HSI bus. Those devices are not supposed to have a driver attached to them. Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2012-04-23HSI: hsi: Fix error path cleanup on client registrationCarlos Chinea1-1/+1
HSI client structure should be freed on error path after calling device_registration by dropping a reference to it. Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2012-04-23HSI: hsi: Rework hsi_controller releaseCarlos Chinea1-42/+66
Use the proper release mechanism for hsi_controller and hsi_ports structures. Free the structures through their associated device release callbacks. Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2012-01-05HSI: hsi_char: Add HSI char device kernel configurationAndras Domokos4-0/+21
Add HSI character device kernel configuration Signed-off-by: Andras Domokos <andras.domokos@nokia.com> Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com>
2012-01-05HSI: hsi_char: Add HSI char device driverAndras Domokos1-0/+802
Add HSI char device driver to the kernel. Signed-off-by: Andras Domokos <andras.domokos@nokia.com> Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com>
2012-01-05HSI: hsi: Introducing HSI frameworkCarlos Chinea5-0/+613
Adds HSI framework in to the linux kernel. High Speed Synchronous Serial Interface (HSI) is a serial interface mainly used for connecting application engines (APE) with cellular modem engines (CMT) in cellular handsets. HSI provides multiplexing for up to 16 logical channels, low-latency and full duplex communication. Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
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