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d="scan'208";a="697740832" Received: from ljgreene-mobl.amr.corp.intel.com (HELO [10.209.124.121]) ([10.209.124.121]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 May 2023 11:31:43 -0700 Message-ID: <1d73963a-de26-a147-6ccb-e5c8c65f579b@linux.intel.com> Date: Mon, 22 May 2023 11:16:41 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Firefox/102.0 Thunderbird/102.11.0 Subject: Re: [PATCH V2 1/9] ASoC: amd: ps: create platform devices based on acp config Content-Language: en-US To: Vijendar Mukunda , 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 , Jaroslav Kysela , Takashi Iwai , Syed Saba Kareem , open list References: <20230522133122.166841-1-Vijendar.Mukunda@amd.com> <20230522133122.166841-2-Vijendar.Mukunda@amd.com> From: Pierre-Louis Bossart In-Reply-To: <20230522133122.166841-2-Vijendar.Mukunda@amd.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Message-ID-Hash: YMV7PPYMCMVDP3IOPDDBQBIDXLSOHUUV X-Message-ID-Hash: YMV7PPYMCMVDP3IOPDDBQBIDXLSOHUUV X-MailFrom: pierre-louis.bossart@linux.intel.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: > +static int sdw_amd_scan_controller(struct device *dev) > +{ > + struct acp63_dev_data *acp_data; > + struct fwnode_handle *link; > + char name[32]; > + u32 sdw_manager_bitmap; > + u8 count = 0; > + u32 acp_sdw_power_mode = 0; > + int index; > + int ret; > + > + acp_data = dev_get_drvdata(dev); > + acp_data->acp_reset = true; > + /* Found controller, find links supported */ > + ret = fwnode_property_read_u32_array((acp_data->sdw_fw_node), "mipi-sdw-manager-list", > + &sdw_manager_bitmap, 1); > + > + if (ret) { > + dev_err(dev, "Failed to read mipi-sdw-manager-list: %d\n", ret); > + return -EINVAL; > + } > + count = hweight32(sdw_manager_bitmap); > + /* Check count is within bounds */ > + if (count > AMD_SDW_MAX_MANAGERS) { > + dev_err(dev, "Manager count %d exceeds max %d\n", count, AMD_SDW_MAX_MANAGERS); > + return -EINVAL; > + } > + > + if (!count) { > + dev_dbg(dev, "No SoundWire Managers detected\n"); > + return -EINVAL; > + } > + dev_dbg(dev, "ACPI reports %d SoundWire Manager devices\n", count); > + acp_data->sdw_manager_count = count; > + for (index = 0; index < count; index++) { > + snprintf(name, sizeof(name), "mipi-sdw-link-%d-subproperties", index); > + link = fwnode_get_named_child_node(acp_data->sdw_fw_node, name); > + if (!link) { > + dev_err(dev, "Manager node %s not found\n", name); > + return -EIO; > + } > + > + fwnode_property_read_u32(link, "amd-sdw-power-mode", > + &acp_sdw_power_mode); What happens if this property is not found or doesn't exist? acp_sdw_power_mode is zero, so.... > + /* > + * when SoundWire configuration is selected from acp pin config, > + * based on manager instances count, acp init/de-init sequence should be > + * executed as part of PM ops only when Bus reset is applied for the active > + * SoundWire manager instances. > + */ > + if (acp_sdw_power_mode != AMD_SDW_POWER_OFF_MODE) > + acp_data->acp_reset = false; ... here this branch is taken. Is this intentional? > + } > + return 0; > +} > + > +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 > + bool is_sdw_dev = false; and useless init as well... > + 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? > + } > + > + dev_dbg(&pci->dev, "Audio Mode %d\n", config); > switch (config) { > - case ACP_CONFIG_0: > - case ACP_CONFIG_1: > + case ACP_CONFIG_4: > + case ACP_CONFIG_5: > + case ACP_CONFIG_10: > + case ACP_CONFIG_11: > + if (is_dmic_dev) { > + acp_data->pdev_mask = ACP63_PDM_DEV_MASK; > + acp_data->pdev_count = ACP63_PDM_MODE_DEVS; > + } > + break; > case ACP_CONFIG_2: > case ACP_CONFIG_3: > - case ACP_CONFIG_9: > - case ACP_CONFIG_15: > - dev_dbg(&pci->dev, "Audio Mode %d\n", config); > + if (is_sdw_dev) { > + switch (acp_data->sdw_manager_count) { > + case 1: > + acp_data->pdev_mask = ACP63_SDW_DEV_MASK; > + acp_data->pdev_count = ACP63_SDW0_MODE_DEVS; > + break; > + case 2: > + acp_data->pdev_mask = ACP63_SDW_DEV_MASK; > + acp_data->pdev_count = ACP63_SDW0_SDW1_MODE_DEVS; > + break; > + default: > + return -EINVAL; > + } > + } > break; > - default: > - if (is_dmic_dev) { > + case ACP_CONFIG_6: > + case ACP_CONFIG_7: > + case ACP_CONFIG_12: > + case ACP_CONFIG_8: > + case ACP_CONFIG_13: > + case ACP_CONFIG_14: > + if (is_dmic_dev && is_sdw_dev) { > + switch (acp_data->sdw_manager_count) { > + case 1: > + acp_data->pdev_mask = ACP63_SDW_PDM_DEV_MASK; > + acp_data->pdev_count = ACP63_SDW0_PDM_MODE_DEVS; > + break; > + case 2: > + acp_data->pdev_mask = ACP63_SDW_PDM_DEV_MASK; > + acp_data->pdev_count = ACP63_SDW0_SDW1_PDM_MODE_DEVS; > + break; > + default: > + return -EINVAL; > + } > + } else if (is_dmic_dev) { > acp_data->pdev_mask = ACP63_PDM_DEV_MASK; > acp_data->pdev_count = ACP63_PDM_MODE_DEVS; > + } else if (is_sdw_dev) { > + switch (acp_data->sdw_manager_count) { > + case 1: > + acp_data->pdev_mask = ACP63_SDW_DEV_MASK; > + acp_data->pdev_count = ACP63_SDW0_MODE_DEVS; > + break; > + case 2: > + acp_data->pdev_mask = ACP63_SDW_DEV_MASK; > + acp_data->pdev_count = ACP63_SDW0_SDW1_MODE_DEVS; > + break; > + default: > + return -EINVAL; > + } > } > break; > + default: > + break; > } > + return 0; > } > dev_err(&pci->dev, "ACP platform devices creation failed\n");