From: "Mukunda,Vijendar" <vijendar.mukunda@amd.com>
To: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
broonie@kernel.org
Cc: alsa-devel@alsa-project.org, Basavaraj.Hiregoudar@amd.com,
Sunil-kumar.Dommati@amd.com, Mastan.Katragadda@amd.com,
Arungopal.kondaveeti@amd.com, mario.limonciello@amd.com,
Liam Girdwood <lgirdwood@gmail.com>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Syed Saba Kareem <Syed.SabaKareem@amd.com>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH V2 1/9] ASoC: amd: ps: create platform devices based on acp config
Date: Wed, 24 May 2023 12:32:52 +0530 [thread overview]
Message-ID: <06df5132-c1e5-c3cd-bf5c-c0d672837352@amd.com> (raw)
In-Reply-To: <dd93f315-79ef-5108-0cae-fbfafafb9a12@linux.intel.com>
On 23/05/23 19:59, Pierre-Louis Bossart wrote:
>>>> +static int get_acp63_device_config(u32 config, struct pci_dev *pci, struct acp63_dev_data *acp_data)
>>>> {
>>>> struct acpi_device *dmic_dev;
>>>> + struct acpi_device *sdw_dev;
>>>> const union acpi_object *obj;
>>>> bool is_dmic_dev = false;
>>> useless init
>> We are checking is_dmic_dev & is_sdw_dev flags in same code.
>> Either we need to explicitly update value as false when no ACP PDM
>> /SoundWire manager instances not found.
> please discard my comment, I read this sideways
>
>>>> + bool is_sdw_dev = false;
>>> and useless init as well...
> same here.
>>>> + int ret;
>>>>
>>>> dmic_dev = acpi_find_child_device(ACPI_COMPANION(&pci->dev), ACP63_DMIC_ADDR, 0);
>>>> if (dmic_dev) {
>>>> + /* is_dmic_dev flag will be set when ACP PDM controller device exists */
>>>> if (!acpi_dev_get_property(dmic_dev, "acp-audio-device-type",
>>>> ACPI_TYPE_INTEGER, &obj) &&
>>>> obj->integer.value == ACP_DMIC_DEV)
>>>> is_dmic_dev = true;
>>>> }
>>>>
>>>> + sdw_dev = acpi_find_child_device(ACPI_COMPANION(&pci->dev), ACP63_SDW_ADDR, 0);
>>>> + if (sdw_dev) {
>>>> + acp_data->sdw_fw_node = acpi_fwnode_handle(sdw_dev);
>>>> + ret = sdw_amd_scan_controller(&pci->dev);
>>>> + /* is_sdw_dev flag will be set when SoundWire Manager device exists */
>>>> + if (!ret)
>>>> + is_sdw_dev = true;
>>> sdw_amd_scan_controller() can return -EINVAL, how is this handled?
>>> Shouldn't you stop execution and return here in the < 0 case?
>> As per our design, ACP PCI driver probe should be successful, even
>> there are no ACP PDM or Soundwire Manager instance configuration
>> related platform devices.
>>
>> The ACP PCI driver is multi-use and that even if SoundWire manager
>> instances or PDM controller is not found, it will still be used to set the
>> hardware to proper low power states. i.e ACP should enter D3 state
>> after successful execution of probe sequence.
> Ah ok, maybe a reworded comment would make sense then, e.g.
>
> "continue probe and discard errors if SoundWire Manager is not described
> in ACPI tables"
>
> Same for DMIC above
will add a comment.
next prev parent reply other threads:[~2023-05-24 6:58 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230522133122.166841-1-Vijendar.Mukunda@amd.com>
2023-05-22 13:31 ` [PATCH V2 1/9] ASoC: amd: ps: create platform devices based on acp config Vijendar Mukunda
2023-05-22 16:16 ` Pierre-Louis Bossart
2023-05-23 6:25 ` Mukunda,Vijendar
2023-05-23 14:29 ` Pierre-Louis Bossart
2023-05-24 7:02 ` Mukunda,Vijendar [this message]
2023-05-22 13:31 ` [PATCH V2 2/9] ASoC: amd: ps: handle SoundWire interrupts in acp pci driver Vijendar Mukunda
2023-05-22 16:26 ` Pierre-Louis Bossart
2023-05-23 6:49 ` Mukunda,Vijendar
2023-05-23 14:34 ` Pierre-Louis Bossart
2023-05-24 7:01 ` Mukunda,Vijendar
2023-05-22 13:31 ` [PATCH V2 3/9] ASoC: amd: ps: add SoundWire dma driver Vijendar Mukunda
2023-05-22 16:34 ` Pierre-Louis Bossart
2023-05-23 7:11 ` Mukunda,Vijendar
2023-05-23 14:48 ` Pierre-Louis Bossart
2023-05-24 11:37 ` Mukunda,Vijendar
2023-05-25 11:43 ` Mukunda,Vijendar
2023-05-22 13:31 ` [PATCH V2 4/9] ASoC: amd: ps: add SoundWire dma driver dma ops Vijendar Mukunda
2023-05-22 16:39 ` Pierre-Louis Bossart
2023-05-23 5:41 ` Mukunda,Vijendar
2023-05-22 13:31 ` [PATCH V2 5/9] ASoC: amd: ps: add support for SoundWire DMA interrupts Vijendar Mukunda
2023-05-22 18:12 ` Pierre-Louis Bossart
2023-05-23 7:36 ` Mukunda,Vijendar
2023-05-23 15:00 ` Pierre-Louis Bossart
2023-05-24 7:45 ` Mukunda,Vijendar
2023-05-31 7:28 ` Mukunda,Vijendar
2023-05-31 13:53 ` Pierre-Louis Bossart
2023-06-05 11:24 ` Mukunda,Vijendar
2023-05-22 13:31 ` [PATCH V2 6/9] ASoC: amd: ps: add pm ops support for SoundWire dma driver Vijendar Mukunda
2023-05-22 18:20 ` Pierre-Louis Bossart
2023-05-23 10:53 ` Mukunda,Vijendar
2023-05-23 15:03 ` Pierre-Louis Bossart
2023-05-22 13:31 ` [PATCH V2 7/9] ASoC: amd: ps: enable SoundWire dma driver build Vijendar Mukunda
2023-05-22 13:31 ` [PATCH V2 8/9] ASoC: amd: update comments in Kconfig file Vijendar Mukunda
2023-05-22 13:31 ` [PATCH V2 9/9] ASoC: amd: ps: Add SoundWire specific checks in pci driver in pm ops Vijendar Mukunda
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