[PATCH V2 7/8] soundwire: amd: handle soundwire wake enable interrupt

Vijendar Mukunda
2023-02-13T09:41:33Z

Add wake enable interrupt support for both the soundwire manager
instances.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: Mastan Katragadda <Mastan.Katragadda@amd.com>
---
drivers/soundwire/amd_manager.c | 10 ++++++++++
drivers/soundwire/amd_manager.h | 1 +
2 files changed, 11 insertions(+)

diff --git a/drivers/soundwire/amd_manager.c b/drivers/soundwire/amd_manager.c
index eced189ba6e0..e53dc67f8529 100644
--- a/drivers/soundwire/amd_manager.c
+++ b/drivers/soundwire/amd_manager.c
@@ -934,6 +934,13 @@ static void amd_sdw_update_slave_status(u32 status_change_0to7, u32 status_chang
}
}

+static void amd_sdw_process_wake_event(struct amd_sdw_manager *amd_manager)
+{
+ pm_request_resume(amd_manager->dev);
+ acp_reg_writel(0x00, amd_manager->acp_mmio + ACP_SW_WAKE_EN(amd_manager->instance));
+ acp_reg_writel(0x00, amd_manager->mmio + ACP_SW_STATE_CHANGE_STATUS_8TO11);
+}
+
static void amd_sdw_irq_thread(struct work_struct *work)
{
struct amd_sdw_manager *amd_manager =
@@ -945,6 +952,9 @@ static void amd_sdw_irq_thread(struct work_struct *work)
status_change_0to7 = acp_reg_readl(amd_manager->mmio + ACP_SW_STATE_CHANGE_STATUS_0TO7);
dev_dbg(amd_manager->dev, "%s [SDW%d] SDW INT: 0to7=0x%x, 8to11=0x%x\n",
__func__, amd_manager->instance, status_change_0to7, status_change_8to11);
+ if (status_change_8to11 & AMD_SDW_WAKE_STAT_MASK)
+ return amd_sdw_process_wake_event(amd_manager);
+
if (status_change_8to11 & AMD_SDW_PREQ_INTR_STAT) {
amd_sdw_read_and_process_ping_status(amd_manager);
} else {
diff --git a/drivers/soundwire/amd_manager.h b/drivers/soundwire/amd_manager.h
index 6ec37612ae4e..86bc6d4f48bf 100644
--- a/drivers/soundwire/amd_manager.h
+++ b/drivers/soundwire/amd_manager.h
@@ -190,6 +190,7 @@
#define AMD_SDW_CLK_STOP_DONE 1
#define AMD_SDW_CLK_RESUME_REQ 2
#define AMD_SDW_CLK_RESUME_DONE 3
+#define AMD_SDW_WAKE_STAT_MASK BIT(16)

enum amd_sdw_cmd_type {
AMD_SDW_CMD_PING = 0,
--
2.34.1