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Message-ID: <20230516103543.2515097-6-Vijendar.Mukunda@amd.com>
Date: Tue, 16 May 2023 16:05:39 +0530
From: Vijendar Mukunda <Vijendar.Mukunda@....com>
To: <--to=broonie@...nel.org>
CC: <alsa-devel@...a-project.org>, <Basavaraj.Hiregoudar@....com>,
<Sunil-kumar.Dommati@....com>, <Mastan.Katragadda@....com>,
<Arungopal.kondaveeti@....com>,
Vijendar Mukunda <Vijendar.Mukunda@....com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>,
"Syed Saba Kareem" <Syed.SabaKareem@....com>,
Mario Limonciello <mario.limonciello@....com>,
open list <linux-kernel@...r.kernel.org>
Subject: [PATCH 5/9] ASoC: amd: ps: add support for Soundwire DMA interrupts
Initialize workqueue for Soundwire DMA interrupts handling.
Whenever audio data equal to the Soundwire FIFO watermark level
are produced/consumed, interrupt is generated.
Acknowledge the interrupt and schedule the workqueue.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
sound/soc/amd/ps/acp63.h | 17 ++++++++
sound/soc/amd/ps/pci-ps.c | 87 ++++++++++++++++++++++++++++++++++++++-
2 files changed, 103 insertions(+), 1 deletion(-)
diff --git a/sound/soc/amd/ps/acp63.h b/sound/soc/amd/ps/acp63.h
index 7f8e1c76ba4f..f03a98a0b9e3 100644
--- a/sound/soc/amd/ps/acp63.h
+++ b/sound/soc/amd/ps/acp63.h
@@ -135,6 +135,20 @@ 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;
@@ -217,9 +231,12 @@ struct acp63_dev_data {
struct platform_device *pdev[ACP63_DEVS];
struct mutex acp_lock; /* protect shared registers */
struct fwnode_handle *sdw_fw_node;
+ struct work_struct acp_sdw_dma_work;
u16 pdev_mask;
u16 pdev_count;
u16 pdm_dev_index;
+ u16 sdw0_dma_intr_stat[ACP63_SDW0_DMA_MAX_STREAMS];
+ u16 sdw1_dma_intr_stat[ACP63_SDW1_DMA_MAX_STREAMS];
u8 sdw_manager_count;
u16 sdw0_dev_index;
u16 sdw1_dev_index;
diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
index 6566ee14d300..ba8ec8442a6e 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 void acp63_sdw_dma_workthread(struct work_struct *work)
+{
+ struct acp63_dev_data *adata = container_of(work, struct acp63_dev_data,
+ acp_sdw_dma_work);
+ struct sdw_dma_dev_data *sdw_dma_data;
+ 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;
+ }
+ }
+}
+
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)
@@ -147,7 +177,57 @@ static irqreturn_t acp63_irq_handler(int irq, void *dev_id)
snd_pcm_period_elapsed(ps_pdm_data->capture_stream);
irq_flag = 1;
}
- if (irq_flag)
+ 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 & BIT(ACP_P1_AUDIO1_RX_THRESHOLD)) {
+ writel(BIT(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 & BIT(ACP_P1_AUDIO1_TX_THRESHOLD)) {
+ writel(BIT(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)
+ schedule_work(&adata->acp_sdw_dma_work);
+
+ if (irq_flag || sdw_dma_irq_flag)
return IRQ_HANDLED;
else
return IRQ_NONE;
@@ -229,6 +309,7 @@ static int get_acp63_device_config(u32 config, struct pci_dev *pci, struct acp63
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);
+ INIT_WORK(&acp_data->acp_sdw_dma_work, acp63_sdw_dma_workthread);
ret = sdw_amd_scan_controller(&pci->dev);
if (!ret)
is_sdw_dev = true;
@@ -607,6 +688,10 @@ static void snd_acp63_remove(struct pci_dev *pci)
int ret, index;
adata = pci_get_drvdata(pci);
+
+ if (adata->pdev_mask & ACP63_SDW_DEV_MASK)
+ cancel_work_sync(&adata->acp_sdw_dma_work);
+
for (index = 0; index < adata->pdev_count; index++)
platform_device_unregister(adata->pdev[index]);
ret = acp63_deinit(adata->acp63_base, &pci->dev);
--
2.34.1
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