[PATCH V2 2/9] ASoC: amd: ps: handle SoundWire interrupts in acp pci driver

Vijendar Mukunda
2023-05-22T13:27:02Z

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>
---
sound/soc/amd/ps/acp63.h | 4 ++++
sound/soc/amd/ps/pci-ps.c | 43 ++++++++++++++++++++++++++++++++++-----
2 files changed, 42 insertions(+), 5 deletions(-)

diff --git a/sound/soc/amd/ps/acp63.h b/sound/soc/amd/ps/acp63.h
index 95bb1cef900a..d296059be4f0 100644
--- a/sound/soc/amd/ps/acp63.h
+++ b/sound/soc/amd/ps/acp63.h
@@ -88,6 +88,10 @@
/* time in ms for acp timeout */
#define ACP_TIMEOUT 500

+#define ACP_SDW0_STAT BIT(21)
+#define ACP_SDW1_STAT BIT(2)
+#define ACP_ERROR_IRQ BIT(29)
+
enum acp_config {
ACP_CONFIG_0 = 0,
ACP_CONFIG_1,
diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
index 02caae6968ad..26514e340a33 100644
--- a/sound/soc/amd/ps/pci-ps.c
+++ b/sound/soc/amd/ps/pci-ps.c
@@ -56,6 +56,7 @@ static int acp63_reset(void __iomem *acp_base)
static void acp63_enable_interrupts(void __iomem *acp_base)
{
writel(1, acp_base + ACP_EXTERNAL_INTR_ENB);
+ writel(ACP_ERROR_IRQ, acp_base + ACP_EXTERNAL_INTR_CNTL);
}

static void acp63_disable_interrupts(void __iomem *acp_base)
@@ -102,23 +103,55 @@ static irqreturn_t acp63_irq_handler(int irq, void *dev_id)
{
struct acp63_dev_data *adata;
struct pdm_dev_data *ps_pdm_data;
- u32 val;
+ struct amd_sdw_manager *amd_manager;
+ u32 ext_intr_stat, ext_intr_stat1;
+ u16 irq_flag = 0;
u16 pdev_index;

adata = dev_id;
if (!adata)
return IRQ_NONE;
+ ext_intr_stat = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
+ if (ext_intr_stat & ACP_SDW0_STAT) {
+ writel(ACP_SDW0_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
+ pdev_index = adata->sdw0_dev_index;
+ amd_manager = dev_get_drvdata(&adata->pdev[pdev_index]->dev);
+ if (amd_manager)
+ schedule_work(&amd_manager->amd_sdw_irq_thread);
+ irq_flag = 1;
+ }

- val = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
- if (val & BIT(PDM_DMA_STAT)) {
+ ext_intr_stat1 = readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
+ if (ext_intr_stat1 & ACP_SDW1_STAT) {
+ writel(ACP_SDW1_STAT, adata->acp63_base + ACP_EXTERNAL_INTR_STAT1);
+ pdev_index = adata->sdw1_dev_index;
+ amd_manager = dev_get_drvdata(&adata->pdev[pdev_index]->dev);
+ if (amd_manager)
+ schedule_work(&amd_manager->amd_sdw_irq_thread);
+ irq_flag = 1;
+ }
+
+ if (ext_intr_stat & ACP_ERROR_IRQ) {
+ writel(ACP_ERROR_IRQ, adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
+ /* TODO: Report SoundWire Manager instance errors */
+ writel(0, adata->acp63_base + ACP_SW0_I2S_ERROR_REASON);
+ writel(0, adata->acp63_base + ACP_SW1_I2S_ERROR_REASON);
+ writel(0, adata->acp63_base + ACP_ERROR_STATUS);
+ irq_flag = 1;
+ }
+
+ if (ext_intr_stat & BIT(PDM_DMA_STAT)) {
pdev_index = adata->pdm_dev_index;
ps_pdm_data = dev_get_drvdata(&adata->pdev[pdev_index]->dev);
writel(BIT(PDM_DMA_STAT), adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
if (ps_pdm_data->capture_stream)
snd_pcm_period_elapsed(ps_pdm_data->capture_stream);
- return IRQ_HANDLED;
+ irq_flag = 1;
}
- return IRQ_NONE;
+ if (irq_flag)
+ return IRQ_HANDLED;
+ else
+ return IRQ_NONE;
}

static int sdw_amd_scan_controller(struct device *dev)
--
2.34.1