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path: root/drivers/soundwire/cadence_master.h
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2020-03-19soundwire: cadence: make SSP interval programmablePierre-Louis Bossart
In multi-master mode, the IP will only accept SSP intervals with integer relationships between the frame rate and the gsync frequency. E.g for a 48kHz frame rate and 4 kHz gsync signal, the SSP interval can only be 1, 2, 3, 4, 6, 12. To simplify we only allow one SSP per gsync interval. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200317163329.25501-11-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-19soundwire: cadence: add clock_stop/restart routinesRander Wang
Add support for clock stop and restart, with two configuration parameters: 1) when entering the ClockStop mode, Slave-initiated wakes can be prevented. 2) When exiting the ClockStop mode, the caller can request a Bus Reset (either if all Slaves were configured in ClockStopMode1 or the Master IP lost context and enumeration is required) The code handles the case where no Slaves are present by configuring the IP to treat COMMAND_IGNORED as success. The exit_reset part can be dealt with in the caller, along with the required syncArm/syncGo sequence in multi-link mode. Signed-off-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200317163329.25501-6-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-19soundwire: cadence: add interface to check clock statusRander Wang
If master is in clock stop state, driver can't modify registers in master except the registers for clock stop setting. Signed-off-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200317163329.25501-4-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-19soundwire: cadence: simplifiy cdns_init()Rander Wang
There is no need for the clock_stop_exit argument with the latest implementation Signed-off-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200317163329.25501-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-02-26soundwire: cadence: remove useless prototypesPierre-Louis Bossart
These prototypes are no longer used, remove. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200225170041.23644-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-24soundwire: cadence_master: make clock stop exit configurable on initPierre-Louis Bossart
The use of clock stop is not a requirement, the IP can e.g. be completely power gated and not detect any wakes while in s2idle/deep sleep. For now clock-stop is not supported anyways so the control parameter is always false. This will be revisited when we add clock stop. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191022235448.17586-6-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-24soundwire: intel/cadence: add flag for interrupt enablePierre-Louis Bossart
Prepare for future PM support and fix error handling by disabling interrupts as needed. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191022235448.17586-5-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-24soundwire: intel/cadence: fix startup sequencePierre-Louis Bossart
Multiple changes squashed in single patch to avoid tick-tock effect and avoid breaking compilation/bisect 1. Per the hardware documentation, all changes to MCP_CONFIG, MCP_CONTROL, MCP_CMDCTRL and MCP_PHYCTRL need to be validated with a self-clearing write to MCP_CONFIG_UPDATE. Add a helper and do the update when the CONFIG is changed. 2. Move interrupt enable after interrupt handler registration 3. Add a new helper to start the hardware bus reset with maximum duration to make sure the Slave(s) correctly detect the reset pattern and to ensure electrical conflicts can be resolved. 4. flush command FIFOs Better error handling will be provided after interrupt disable is provided in follow-up patches. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191022235448.17586-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-21soundwire: cadence_master: improve PDI allocationBard Liao
PDI number should match dai->id, there is no need to track if a PDI is allocated or not. Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190916192348.467-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-10-21soundwire: cadence/intel: simplify PDI/port mappingPierre-Louis Bossart
The existing Linux code uses a 1:1 mapping between ports and PDIs, but still has an independent allocation of ports and PDIs. Let's simplify the code and remove the port layer by only using PDIs. This patch does not change any functionality, just removes unnecessary code. This will also allow for further simplifications where the PDIs are not dynamically allocated but instead described in a topology file. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190916192348.467-5-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-08-23soundwire: cadence_master: add debugfs register dumpPierre-Louis Bossart
Add debugfs file to dump the Cadence master registers. Credits: this patch is based on an earlier internal contribution by Vinod Koul, Sanyog Kale, Shreyas Nc and Hardik Shah. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190821185821.12690-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-08-21soundwire: intel: move shutdown() callback and don't export symbolPierre-Louis Bossart
All DAI callbacks are in intel.c except for shutdown. Move and remove export symbol Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190806005522.22642-18-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-05-02soundwire: fix alignment issues in header filesPierre-Louis Bossart
use Linux style Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-02soundwire: fix SPDX license for header filesPierre-Louis Bossart
No C++ comments in .h files Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-11soundwire: cdns: Add stream routinesVinod Koul
Add support for Cadence stream initialization and implement stream APIs. 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>
2018-05-11soundwire: cdns: Add port routinesVinod Koul
Add support for Cadence port management and implement master port ops. 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>
2018-05-11soundwire: Remove cdns_master_opsShreyas NC
There can be instances where drivers using Cadence IP might want to set sdw_master_ops differently per instance of it's use, so remove the cdns_master_ops and export the APIs. Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2017-12-19soundwire: cdns: Add sdw_master_ops and IO transfer supportSanyog Kale
Implement sdw_master_ops with support for xfer_msg, xfer_msg_defer and reset_page_addr. Since Cadence module doesn't know the systems it will be used, set the read_prop to the bus helper. 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>
2017-12-19soundwire: cdns: Add cadence libraryVinod Koul
Cadence IP implements SoundWire Master. Add base cadence library initialization and interrupt handling 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>
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