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path: root/drivers/staging/most/aim-sound/sound.c
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2017-11-27staging: most: sound: rename moduleChristian Gromm1-759/+0
This patch renames the folder of the sound module. It is needed to clean up the directory layout of the driver. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-27staging: most: move core filesChristian Gromm1-1/+1
This patch moves the core files to the root dir of the driver. This is needed to clean up the directory layout. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-27staging: most: Remove redundant license textGreg Kroah-Hartman1-7/+0
Now that the SPDX tag is in all most driver files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Christian Gromm <christian.gromm@microchip.com> Cc: Michael Fabry <Michael.Fabry@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-27staging: most: add SPDX identifiers to all most driver filesGreg Kroah-Hartman1-0/+1
It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Update the drivers/staging/most files files with the correct SPDX license identifier based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Michael Fabry <Michael.Fabry@microchip.com> Cc: Christian Gromm <christian.gromm@microchip.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-25staging: most: aim-sound style fixessDhananjay Balan1-1/+1
Replace hardcoded function name with __func__ Signed-off-by: Dhananjay Balan <mail@dbalan.in> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-27Staging: most: aim-sound: constify snd_pcm_ops structuresBhumika Goyal1-1/+1
Check for snd_pcm_ops structures that are only passed as the third argument to the function snd_pcm_set_ops. As this argument is constant, so snd_pcm_ops structures having this property can also be made constant. Done using coccinelle: @r1 disable optional_qualifier @ identifier i; position p; @@ static struct snd_pcm_ops i@p = {...}; @ok1@ identifier r1.i; position p; expression e1,e2; @@ snd_pcm_set_ops(e1,e2,&i@p) @bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r1.i; @@ static +const struct snd_pcm_ops i={...}; @depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct snd_pcm_ops i; File size before: text data bss dec hex filename 4963 192 16 5171 1433 drivers/staging/most/aim-sound/sound.o File size after: text data bss dec hex filename 5075 64 16 5155 1423 drivers/staging/most/aim-sound/sound.o Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-27staging: most: fix error return code in audio_probe_channel()Wei Yongjun1-1/+2
Fix to return a negative error code from the audio_set_hw_params() error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de> Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-22staging: most: make function most_submit_mbo return voidChristian Gromm1-5/+1
Function most_submit_mbo() causes an exception only if either the pointer mbo or mbo->context equals NULL. From the underlying architecture's point of view both cases must _not_ come true and would happen only, if something has tampered with the pointers. This would render runtime code unable to recover anyway. So, instead trying to hide that things are already critically out of control we're better off with a WARN_ON() assertion. This patch replaces the return type of the function most_submit_mbo() with 'void' and adds a WARN_ONCE() assertion. Additionally, code calling the function is adapted accordingly. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-25staging: most: remove multiple blank linesChristian Gromm1-1/+0
This patch removes the usage of multiple blank lines from driver modules. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-13Staging: most: Remove exceptional & on function nameShraddha Barke1-1/+1
In this file, function names are otherwise used as pointers without &. A simplified version of the Coccinelle semantic patch that makes this change is as follows: // <smpl> @r@ identifier f; @@ f(...) { ... } @@ identifier r.f; @@ - &f + f // </smpl> Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: fix pcm_write input/output errorChristian Gromm1-6/+11
This patch keeps the process from sleeping after the PCM middle layer has stopped playback by calling the pcm trigger callback. The patch is needed to prevent aplay from causing a pcm_write Input/Output error. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: remove audio resolution format checkChristian Gromm1-2/+1
This patch removes the audio format cross-check, because the definitions are not compatible. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: fix style problemsChristian Gromm1-3/+3
This patch simply corrects style violations. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: move initialization codeChristian Gromm1-18/+10
This pathch moves the initialization of the PCM middle layer hardware parameters to function audio_set_hw_params(). Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: rename functionChristian Gromm1-2/+2
This patch renames the function audio_set_pcm_format(). Since the function doesn't only set the PCM format anymore and to guard against misunderstandings, its name needs to be changed. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: add missing channel initializationChristian Gromm1-0/+2
This patch adds missing initialization of channel count for 8-bit mono audio resolution. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: purge unecessary variableChristian Gromm1-4/+1
This patch purges a temp. variable to store the functions return value. Since the content is never being evaluated, it can safely be removed. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: squash AIM soundChristian Gromm1-14/+0
This patch removes debug messages and prevents the sound AIM from being noisy in kernel log. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: make hardware parameters channel exclusiveChristian Gromm1-32/+36
Since the PCM interface's hardware parameters are channel/substream exclusive, the struct snd_pcm_hardware needs to be embedded in the channel structure. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: include vendor in audio card's shortnameChristian Gromm1-1/+1
This patch adds Microchip as vendor to the audio card's shortname to be displayed, when playback and capture devices are queried. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: add multi channel support to sound AIMChristian Gromm1-2/+25
This patch adds 5.1 surround configuration with subbuffer cross-check, when establishing a link to the core. For the sake of simplicity, only one specific channel configuration is allowed. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: add fair buffer distributionChristian Gromm1-1/+2
This patch ensures a fair distribution of buffers, when two AIMs share a single channel. The AIMs then won't be able to use more than half of all pre-allocated buffers of the linked channel. However, in case the channel is not shared, the AIM can exclusively use all available buffers. Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de> Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-29staging: most: fix channel operation in multi-aim contextChristian Gromm1-2/+3
This patch fixes the opening and closing process of a physical channel when used by different AIMs. Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de> Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-13staging: most: make functions staticSudip Mukherjee1-2/+3
split_arg_list() and audio_set_pcm_format() are being called from the same file and is not referenced from outside, so make them as static. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24Staging: most: add MOST driver's aim-sound moduleChristian Gromm1-0/+758
This patch adds the aim-sound module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles user space interaction by means of ALSA devices. This patch is needed in order to have access to MOST synchronous data through ALSA devices. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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