mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

ASoC: amd: add acp6.2 irq handler 

Add ACP6.2 irq handler for handling irq events for ACP IP.
Add pdm irq events handling.
Whenever audio data equal to the PDM watermark level are consumed,
interrupt is generated. Acknowledge the interrupt.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@amd.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20220827165657.2343818-7-Syed.SabaKareem@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Syed Saba Kareem 2022-08-27 22:26:50 +05:30 committed by Mark Brown
parent 33cea6bbe4
commit 5bbeca60a5
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/soc/amd/ps/acp62.h
View File

@ -24,6 +24,7 @@
#define ACP_ERROR_MASK 0x20000000
#define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
#define PDM_DMA_STAT 0x10
enum acp_config {
ACP_CONFIG_0 = 0,
@ -45,6 +46,7 @@ enum acp_config {
};
struct pdm_dev_data {
u32 pdm_irq;
void __iomem *acp62_base;
struct snd_pcm_substream *capture_stream;
};

31
sound/soc/amd/ps/pci-ps.c
View File

@ -11,6 +11,8 @@
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/acpi.h>
#include <linux/interrupt.h>
#include <sound/pcm_params.h>
#include "acp62.h"
@ -115,6 +117,27 @@ static int acp62_deinit(void __iomem *acp_base, struct device *dev)
return 0;
}
static irqreturn_t acp62_irq_handler(int irq, void *dev_id)
{
struct acp62_dev_data *adata;
struct pdm_dev_data *ps_pdm_data;
u32 val;
adata = dev_id;
if (!adata)
return IRQ_NONE;
val = acp62_readl(adata->acp62_base + ACP_EXTERNAL_INTR_STAT);
if (val & BIT(PDM_DMA_STAT)) {
ps_pdm_data = dev_get_drvdata(&adata->pdev[0]->dev);
acp62_writel(BIT(PDM_DMA_STAT), adata->acp62_base + ACP_EXTERNAL_INTR_STAT);
if (ps_pdm_data->capture_stream)
snd_pcm_period_elapsed(ps_pdm_data->capture_stream);
return IRQ_HANDLED;
}
return IRQ_NONE;
}
static int snd_acp62_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
@ -125,7 +148,9 @@ static int snd_acp62_probe(struct pci_dev *pci,
struct acpi_device *adev;
const union acpi_object *obj;
u32 addr;
unsigned int irqflags;
irqflags = IRQF_SHARED;
/* Pink Sardine device check */
switch (pci->revision) {
case 0x63:
@ -218,6 +243,12 @@ static int snd_acp62_probe(struct pci_dev *pci,
ret = PTR_ERR(adata->pdev[index]);
goto unregister_devs;
}
ret = devm_request_irq(&pci->dev, pci->irq, acp62_irq_handler,
irqflags, "ACP_PCI_IRQ", adata);
if (ret) {
dev_err(&pci->dev, "ACP PCI IRQ request failed\n");
goto unregister_devs;
}
}
}
break;