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Tue, 6 Jun 2023 01:03:16 -0500 Received: from vijendar-X570-GAMING-X.amd.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Tue, 6 Jun 2023 01:03:12 -0500 From: Vijendar Mukunda To: CC: , , , , , , , Vijendar Mukunda , Liam Girdwood , Jaroslav Kysela , Takashi Iwai , Syed Saba Kareem , open list Subject: [PATCH V3 5/9] ASoC: amd: ps: add support for SoundWire DMA interrupts Date: Tue, 6 Jun 2023 11:37:20 +0530 Message-ID: <20230606060724.2038680-6-Vijendar.Mukunda@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230606060724.2038680-1-Vijendar.Mukunda@amd.com> References: <20230606060724.2038680-1-Vijendar.Mukunda@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EDD3:EE_|CH3PR12MB9026:EE_ X-MS-Office365-Filtering-Correlation-Id: fe712fde-6723-4b92-ab6a-08db6653bdd4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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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: Move to request_threaded_irq and use thread for handling SoundWire DMA interrupts. Whenever audio data equal to the SoundWire FIFO watermark level are produced/consumed, interrupt is generated. Acknowledge the interrupt and wake up the irq thread. Signed-off-by: Vijendar Mukunda --- sound/soc/amd/ps/acp63.h | 18 +++++++++ sound/soc/amd/ps/pci-ps.c | 84 ++++++++++++++++++++++++++++++++++++++- 2 files changed, 100 insertions(+), 2 deletions(-) diff --git a/sound/soc/amd/ps/acp63.h b/sound/soc/amd/ps/acp63.h index 5779afdc8f02..c8ba0195846b 100644 --- a/sound/soc/amd/ps/acp63.h +++ b/sound/soc/amd/ps/acp63.h @@ -175,6 +175,20 @@ enum acp_pdev_mask { ACP63_SDW_PDM_DEV_MASK, }; +enum amd_sdw0_channel { + ACP_SDW0_AUDIO0_TX = 0, + ACP_SDW0_AUDIO1_TX, + ACP_SDW0_AUDIO2_TX, + ACP_SDW0_AUDIO0_RX, + ACP_SDW0_AUDIO1_RX, + ACP_SDW0_AUDIO2_RX, +}; + +enum amd_sdw1_channel { + ACP_SDW1_AUDIO1_TX, + ACP_SDW1_AUDIO1_RX, +}; + struct pdm_stream_instance { u16 num_pages; u16 channels; @@ -239,6 +253,8 @@ struct sdw_dma_ring_buf_reg { * @sdw0_dev_index: SoundWire Manager-0 platform device index * @sdw1_dev_index: SoundWire Manager-1 platform device index * @sdw_dma_dev_index: SoundWire DMA controller platform device index + * @sdw0-dma_intr_stat: DMA interrupt status array for SoundWire manager-SW0 instance + * @sdw_dma_intr_stat: DMA interrupt status array for SoundWire manager-SW1 instance * @acp_reset: flag set to true when bus reset is applied across all * the active SoundWire manager instances */ @@ -256,6 +272,8 @@ struct acp63_dev_data { u16 sdw0_dev_index; u16 sdw1_dev_index; u16 sdw_dma_dev_index; + u16 sdw0_dma_intr_stat[ACP63_SDW0_DMA_MAX_STREAMS]; + u16 sdw1_dma_intr_stat[ACP63_SDW1_DMA_MAX_STREAMS]; bool acp_reset; }; diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c index 17e29a3e1c21..daf54fe9cafd 100644 --- a/sound/soc/amd/ps/pci-ps.c +++ b/sound/soc/amd/ps/pci-ps.c @@ -99,14 +99,44 @@ static int acp63_deinit(void __iomem *acp_base, struct device *dev) return 0; } +static irqreturn_t acp63_irq_thread(int irq, void *context) +{ + struct sdw_dma_dev_data *sdw_dma_data; + struct acp63_dev_data *adata = context; + u32 stream_index; + u16 pdev_index; + + pdev_index = adata->sdw_dma_dev_index; + sdw_dma_data = dev_get_drvdata(&adata->pdev[pdev_index]->dev); + + for (stream_index = 0; stream_index < ACP63_SDW0_DMA_MAX_STREAMS; stream_index++) { + if (adata->sdw0_dma_intr_stat[stream_index]) { + if (sdw_dma_data->sdw0_dma_stream[stream_index]) + snd_pcm_period_elapsed(sdw_dma_data->sdw0_dma_stream[stream_index]); + adata->sdw0_dma_intr_stat[stream_index] = 0; + } + } + for (stream_index = 0; stream_index < ACP63_SDW1_DMA_MAX_STREAMS; stream_index++) { + if (adata->sdw1_dma_intr_stat[stream_index]) { + if (sdw_dma_data->sdw1_dma_stream[stream_index]) + snd_pcm_period_elapsed(sdw_dma_data->sdw1_dma_stream[stream_index]); + adata->sdw1_dma_intr_stat[stream_index] = 0; + } + } + return IRQ_HANDLED; +} + static irqreturn_t acp63_irq_handler(int irq, void *dev_id) { struct acp63_dev_data *adata; struct pdm_dev_data *ps_pdm_data; struct amd_sdw_manager *amd_manager; u32 ext_intr_stat, ext_intr_stat1; + u32 stream_id = 0; u16 irq_flag = 0; + u16 sdw_dma_irq_flag = 0; u16 pdev_index; + u16 index; adata = dev_id; if (!adata) @@ -153,6 +183,56 @@ static irqreturn_t acp63_irq_handler(int irq, void *dev_id) snd_pcm_period_elapsed(ps_pdm_data->capture_stream); irq_flag = 1; } + if (ext_intr_stat & ACP_SDW_DMA_IRQ_MASK) { + for (index = ACP_AUDIO2_RX_THRESHOLD; index <= ACP_AUDIO0_TX_THRESHOLD; index++) { + if (ext_intr_stat & BIT(index)) { + writel(BIT(index), adata->acp63_base + ACP_EXTERNAL_INTR_STAT); + switch (index) { + case ACP_AUDIO0_TX_THRESHOLD: + stream_id = ACP_SDW0_AUDIO0_TX; + break; + case ACP_AUDIO1_TX_THRESHOLD: + stream_id = ACP_SDW0_AUDIO1_TX; + break; + case ACP_AUDIO2_TX_THRESHOLD: + stream_id = ACP_SDW0_AUDIO2_TX; + break; + case ACP_AUDIO0_RX_THRESHOLD: + stream_id = ACP_SDW0_AUDIO0_RX; + break; + case ACP_AUDIO1_RX_THRESHOLD: + stream_id = ACP_SDW0_AUDIO1_RX; + break; + case ACP_AUDIO2_RX_THRESHOLD: + stream_id = ACP_SDW0_AUDIO2_RX; + break; + } + + adata->sdw0_dma_intr_stat[stream_id] = 1; + sdw_dma_irq_flag = 1; + } + } + } + + /* SDW1 BT RX */ + if (ext_intr_stat1 & ACP_P1_AUDIO1_RX_THRESHOLD) { + writel(ACP_P1_AUDIO1_RX_THRESHOLD, + adata->acp63_base + ACP_EXTERNAL_INTR_STAT1); + adata->sdw1_dma_intr_stat[ACP_SDW1_AUDIO1_RX] = 1; + sdw_dma_irq_flag = 1; + } + + /* SDW1 BT TX*/ + if (ext_intr_stat1 & ACP_P1_AUDIO1_TX_THRESHOLD) { + writel(ACP_P1_AUDIO1_TX_THRESHOLD, + adata->acp63_base + ACP_EXTERNAL_INTR_STAT1); + adata->sdw1_dma_intr_stat[ACP_SDW1_AUDIO1_TX] = 1; + sdw_dma_irq_flag = 1; + } + + if (sdw_dma_irq_flag) + return IRQ_WAKE_THREAD; + if (irq_flag) return IRQ_HANDLED; else @@ -544,8 +624,8 @@ static int snd_acp63_probe(struct pci_dev *pci, ret = acp63_init(adata->acp63_base, &pci->dev); if (ret) goto release_regions; - ret = devm_request_irq(&pci->dev, pci->irq, acp63_irq_handler, - irqflags, "ACP_PCI_IRQ", adata); + ret = devm_request_threaded_irq(&pci->dev, pci->irq, acp63_irq_handler, + acp63_irq_thread, irqflags, "ACP_PCI_IRQ", adata); if (ret) { dev_err(&pci->dev, "ACP PCI IRQ request failed\n"); goto de_init;