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* soundwire: add module_sdw_driver helper macroSrinivas Kandagatla2019-07-011-0/+11
| | | | | | | | | This Helper macro is for SoundWire drivers which do not do anything special in module init/exit. This eliminates a lot of boilerplate. Each module may only use this macro once, and calling it replaces module_init() and module_exit() Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: rename/clarify MIPI DisCo propertiesPierre-Louis Bossart2019-05-271-6/+7
| | | | | | | | | | | | | | | | | | The existing definitions are ambiguous and possibly misleading. For DP0, 'flow-control' is only relevant for the BRA protocol and should not be confused with async modes explicitly not supported for DP0, add prefix to follow MIPI DisCo definition The use of 'device_interrupts' is also questionable. The MIPI SoundWire spec defines Slave-, DP0- and DPN-level implementation-defined interrupts. Using the 'device' prefix in the last two cases is misleading, not only is the term 'device' overloaded but these properties are only valid at the DP0 and DPn levels. Rename to follow the MIPI definitions, no need to be creative here. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: clarify commentPierre-Louis Bossart2019-05-271-1/+1
| | | | | | | | The MIPI DisCo spec refers to dynamic frame shape, not to dynamic shape. Clarify. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: mipi-disco: fix clock stop modesPierre-Louis Bossart2019-05-271-2/+2
| | | | | | | | | | Fix support for clock_stop_mode0 and 1. The existing code uses a bitmask between enums, one of which being zero. Or-ing with zero is not very useful in general...Fix by or-ing with a BIT dependent on the enum value. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: rename 'freq' fieldsPierre-Louis Bossart2019-05-271-6/+6
| | | | | | | | | | Rename all fields with 'freq' as 'clk_freq' to follow the MIPI specification and avoid confusion between bus clock and audio clocks. No functionality change. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: mipi-disco: remove master_count property for mastersPierre-Louis Bossart2019-05-271-2/+0Star
| | | | | | | | The master_count is only defined for a Controller or a Slave in the MIPI DisCo for SoundWire document. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: remove master data port propertiesPierre-Louis Bossart2019-05-271-2/+0Star
| | | | | | | | | | | | The SoundWire and DisCo specifications do not define Master data ports or related properties. Data ports are only defined for Slave devices, so remove the unused member in properties. Credits: this patch is based on an earlier internal contribution by Vinod Koul, Sanyog Kale, Shreyas Nc and Hardik Shah. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: add port-related definitionsPierre-Louis Bossart2019-05-271-0/+53
| | | | | | | | Somehow previous header files did not include definition for sink/source, flow and grouping. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: remove multiple blank linesVinod Koul2019-05-021-1/+0Star
| | | | | | | | | | Multi-blank lines do not help readability so remove them Checkpatch complains: CHECK: Please don't use multiple blank lines Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: wrap macro argument in parenthesisVinod Koul2019-05-021-1/+1
| | | | | | | | | | | | macro argument should be inside a parenthesis to avoid precedence issues checkpatch complains: CHECK: Macro argument 'n' may be better as '(n)' to avoid precedence issues Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: intel: more alignment fixesVinod Koul2019-05-021-1/+1
| | | | | | | | Found few more issues reported checkpatch on code alignment so fix those as well in the intel module. Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: more alignment fixesVinod Koul2019-05-021-5/+5
| | | | | | | | Found few more issues reported checkpatch on code alignment so fix those as well in the soundwire core. Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: add argument to function definitionVinod Koul2019-05-021-1/+1
| | | | | | | | | | | Checkpatch warns that function definition of __sdw_register_driver misses argument, so add it WARNING: function definition argument 'struct module *' should also have an identifier name Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: fix SPDX license for header filesVinod Koul2019-05-023-6/+6
| | | | | | | | Some more headers had C++ style SDPX line, fix that and change copyright so that it is consistent with rest of the code in subsystem Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: intel: fix SPDX license for header fileVinod Koul2019-05-021-2/+2
| | | | | | | | Some more headers had C++ style SDPX line, fix that and change copyright so that it is consistent with rest of the code in subsystem Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: keep track of Masters in a streamShreyas NC2018-08-271-0/+2
| | | | | | | | | | | | A multi link bankswitch can be done if the hardware supports and the stream is handled by multiple Master(s). This preparatory patch adds support to track m_rt in a stream. Modifying m_rt_count and usage is added as part of the next patch. Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: Add support for multi link bank switchShreyas NC2018-08-271-0/+4
| | | | | | | | | | | | | In cases of multiple Masters in a stream, synchronization between multiple Master(s) is achieved by performing bank switch together and using Master methods. Add sdw_ml_bank_switch() to wait for completion of bank switch. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: Handle multiple master instances in a streamVinod Koul2018-08-271-2/+0Star
| | | | | | | | | | | | | | | For each SoundWire stream operation, we need to parse master list and operate upon all master runtime. This is a preparatory patch to do the boilerplate conversion of stream handling from single master runtime to handle a list of master runtime. The code to support bank switch for multiple master instances is added in the next patch. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: Add support to lock across bus instancesSanyog Kale2018-08-271-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the stream concept is limited to single Master and one or more Codecs. This patch extends the concept to support multiple Master(s) sharing the same reference clock and synchronized in the hardware. Modify sdw_stream_runtime to support a list of sdw_master_runtime for the same. The existing reference to a single m_rt is removed in the next patch. Typically to lock, one would acquire a global lock and then lock bus instances. In this case, the caller framework(ASoC DPCM) guarantees that stream operations on a card are always serialized. So, there is no race condition and hence no need for global lock. Bus lock(s) are acquired to reconfigure the bus while the stream is set-up. So, we add sdw_acquire_bus_lock()/sdw_release_bus_lock() APIs which are used only to reconfigure the bus. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: intel: Add audio DAI opsVinod Koul2018-05-112-0/+17
| | | | | | | | | Add DAI registration and DAI ops for the Intel driver along with callback for topology configuration. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: Add stream configuration APIsSanyog Kale2018-05-111-0/+4
| | | | | | | | Add APIs for prepare, enable, disable and de-prepare stream. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: Add bank switch routineSanyog Kale2018-05-111-0/+48
| | | | | | | | | SoundWire supports two registers banks. So, program the alternate bank with new configuration and then performs bank switch. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: Add helpers for ports operationsSanyog Kale2018-05-111-0/+54
| | | | | | | | | Add helpers to configure, prepare, enable, disable and de-prepare ports. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: Add Master and Slave port programmingSanyog Kale2018-05-111-1/+46
| | | | | | | | | Master and Slave port registers need to be programmed for each port used in a stream. Add the helpers for port register programming. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: Add support for port managementSanyog Kale2018-05-111-0/+67
| | | | | | | | | Add Soundwire port data structures and APIS for initialization and release of ports. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: Add support for SoundWire stream managementSanyog Kale2018-05-111-0/+109
| | | | | | | | | | This patch adds APIs and relevant stream data structures for initialization and release of stream. Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com> Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* soundwire: intel: Add Intel init moduleVinod Koul2017-12-191-0/+3
| | | | | | | | | | | | | The SoundWire Master is implemented as part of Audio controller in Intel platforms. Add a init module which creates SoundWire Master platform devices based on the links supported in the hardware. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: intel: Add Intel Master driverVinod Koul2017-12-191-0/+21
| | | | | | | | | | | | | | Some Intel platforms have SoundWire Master, so add Intel SoundWire Master driver which uses Cadence module. This patch adds probe and initialization routines for Intel Master driver. Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com> Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: Add slave status handlingVinod Koul2017-12-191-0/+20
| | | | | | | | | | | | | Add status handling API sdw_handle_slave_status() to handle Slave status changes. Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com> Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: Add Slave status handling helpersSanyog Kale2017-12-191-0/+2
| | | | | | | | | | | | | SoundWire Slaves report status to bus. Add helpers to handle the status changes. Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com> Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: Add IO transferVinod Koul2017-12-191-0/+57
| | | | | | | | | | | | | | SoundWire bus supports read or write register(s) for SoundWire Slave device. sdw_read() and sdw_write() APIs are provided for single register read/write. sdw_nread() and sdw_nwrite() for operations on contiguous registers. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: Add SoundWire MIPI defined registersSanyog Kale2017-12-191-0/+194
| | | | | | | | | | | | MIPI SoundWire spec defines standard SoundWire registers mandatory for SoundWire Slave devices, so add them. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: Add MIPI DisCo property helpersVinod Koul2017-12-191-0/+274
| | | | | | | | | | | | | | | | | | | | | | | | | MIPI Discovery And Configuration (DisCo) Specification for SoundWire specifies properties to be implemented for SoundWire Masters and Slaves. The DisCo spec doesn't mandate these properties. However, SDW bus cannot work without knowing these values. The helper functions read the Master and Slave properties. Implementers of Master or Slave drivers can use any of the below three mechanisms: a) Use these APIs here as .read_prop() callback for Master and Slave b) Implement own methods and set those as .read_prop(), but invoke APIs in this file for generic read and override the values with platform specific data c) Implement ones own methods which do not use anything provided here Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: Add Master registrationVinod Koul2017-12-191-0/+18
| | | | | | | | | | | | | | | | A Master adds a SoundWire bus instance which scans the firmware provided for device description. In this patch we scan ACPI namespaces and create SoundWire Slave devices based on ACPI description Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* soundwire: Add SoundWire bus typeVinod Koul2017-12-192-0/+127
This adds the base SoundWire bus type, bus and driver registration. along with changes to module device table for new SoundWire device type. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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