ASoC: amd: ps: handle SoundWire interrupts in acp pci driver
Handle SoundWire manager related interrupts in ACP PCI driver interrupt handler and schedule SoundWire manager work queue for further processing. Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Link: https://lore.kernel.org/r/20230612095903.2113464-3-Vijendar.Mukunda@amd.com Signed-off-by: Mark Brown <broonie@kernel.org>
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@ -99,6 +99,9 @@
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* manager instance combination.
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*/
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#define ACP63_SDW_PDM_DEV_CONFIG GENMASK(1, 0)
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#define ACP_SDW0_STAT BIT(21)
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#define ACP_SDW1_STAT BIT(2)
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#define ACP_ERROR_IRQ BIT(29)
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enum acp_config {
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ACP_CONFIG_0 = 0,
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@ -56,6 +56,7 @@ static int acp63_reset(void __iomem *acp_base)
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static void acp63_enable_interrupts(void __iomem *acp_base)
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{
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writel(1, acp_base + ACP_EXTERNAL_INTR_ENB);
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writel(ACP_ERROR_IRQ, acp_base + ACP_EXTERNAL_INTR_CNTL);
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}
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static void acp63_disable_interrupts(void __iomem *acp_base)
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@ -102,23 +103,60 @@ static irqreturn_t acp63_irq_handler(int irq, void *dev_id)
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{
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struct acp63_dev_data *adata;
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struct pdm_dev_data *ps_pdm_data;
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u32 val;
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struct amd_sdw_manager *amd_manager;
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u32 ext_intr_stat, ext_intr_stat1;
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u16 irq_flag = 0;
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u16 pdev_index;
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adata = dev_id;
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if (!adata)
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return IRQ_NONE;
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/* ACP interrupts will be cleared by reading particular bit and writing
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* same value to the status register. writing zero's doesn't have any
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* effect.
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* Bit by bit checking of IRQ field is implemented.
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*/
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ext_intr_stat = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
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if (ext_intr_stat & ACP_SDW0_STAT) {
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writel(ACP_SDW0_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
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pdev_index = adata->sdw0_dev_index;
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amd_manager = dev_get_drvdata(&adata->pdev[pdev_index]->dev);
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if (amd_manager)
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schedule_work(&amd_manager->amd_sdw_irq_thread);
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irq_flag = 1;
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}
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val = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
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if (val & BIT(PDM_DMA_STAT)) {
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ext_intr_stat1 = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
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if (ext_intr_stat1 & ACP_SDW1_STAT) {
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writel(ACP_SDW1_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
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pdev_index = adata->sdw1_dev_index;
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amd_manager = dev_get_drvdata(&adata->pdev[pdev_index]->dev);
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if (amd_manager)
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schedule_work(&amd_manager->amd_sdw_irq_thread);
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irq_flag = 1;
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}
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if (ext_intr_stat & ACP_ERROR_IRQ) {
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writel(ACP_ERROR_IRQ, adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
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/* TODO: Report SoundWire Manager instance errors */
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writel(0, adata->acp63_base + ACP_SW0_I2S_ERROR_REASON);
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writel(0, adata->acp63_base + ACP_SW1_I2S_ERROR_REASON);
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writel(0, adata->acp63_base + ACP_ERROR_STATUS);
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irq_flag = 1;
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}
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if (ext_intr_stat & BIT(PDM_DMA_STAT)) {
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pdev_index = adata->pdm_dev_index;
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ps_pdm_data = dev_get_drvdata(&adata->pdev[pdev_index]->dev);
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writel(BIT(PDM_DMA_STAT), adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
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if (ps_pdm_data->capture_stream)
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snd_pcm_period_elapsed(ps_pdm_data->capture_stream);
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return IRQ_HANDLED;
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irq_flag = 1;
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}
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return IRQ_NONE;
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if (irq_flag)
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return IRQ_HANDLED;
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else
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return IRQ_NONE;
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}
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static int sdw_amd_scan_controller(struct device *dev)
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