iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ASoC: amd: ps: handle SoundWire interrupts in acp pci driver

Browse Source 
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>
This commit is contained in:
Vijendar Mukunda 2023-06-12 15:28:56 +05:30 committed by Mark Brown
parent d1351c30ac
commit e1cb350610
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 46 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sound/soc/amd/ps/acp63.h
View File

@ -99,6 +99,9 @@
* manager instance combination.
*/
#define ACP63_SDW_PDM_DEV_CONFIG GENMASK(1, 0)
#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,

48
sound/soc/amd/ps/pci-ps.c
View File

@ -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 +103,60 @@ 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;
/* ACP interrupts will be cleared by reading particular bit and writing
* same value to the status register. writing zero's doesn't have any
* effect.
* Bit by bit checking of IRQ field is implemented.
*/
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)