--- Begin Message ---
- To: <vkoul@xxxxxxxxxx>
- Subject: [PATCH V6 7/8] soundwire: amd: handle SoundWire wake enable interrupt
- From: Vijendar Mukunda <Vijendar.Mukunda@xxxxxxx>
- Date: Tue, 7 Mar 2023 19:01:34 +0530
- Cc: alsa-devel@xxxxxxxxxxxxxxxx, pierre-louis.bossart@xxxxxxxxxxxxxxx, Basavaraj.Hiregoudar@xxxxxxx, Sunil-kumar.Dommati@xxxxxxx, Mario.Limonciello@xxxxxxx, amadeuszx.slawinski@xxxxxxxxxxxxxxx, Mastan.Katragadda@xxxxxxx, Arungopal.kondaveeti@xxxxxxx, claudiu.beznea@xxxxxxxxxxxxx, Vijendar Mukunda <Vijendar.Mukunda@xxxxxxx>, Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>, Sanyog Kale <sanyog.r.kale@xxxxxxxxx>, open list <linux-kernel@xxxxxxxxxxxxxxx>
- In-reply-to: <20230307133135.545952-1-Vijendar.Mukunda@amd.com>
- References: <20230307133135.545952-1-Vijendar.Mukunda@amd.com>
Add wake enable interrupt support for both the SoundWire manager
instances.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@xxxxxxx>
Signed-off-by: Mastan Katragadda <Mastan.Katragadda@xxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/lkml/20230227154801.50319-8-Vijendar.Mukunda@xxxxxxx
---
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 c3c0bee57bd1..70e4fcd7e1e0 100644
--- a/drivers/soundwire/amd_manager.c
+++ b/drivers/soundwire/amd_manager.c
@@ -869,6 +869,13 @@ 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 =
@@ -880,6 +887,9 @@ 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, "[SDW%d] SDW INT: 0to7=0x%x, 8to11=0x%x\n",
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 65bc79d8f7c9..cc1a14731fd4 100644
--- a/drivers/soundwire/amd_manager.h
+++ b/drivers/soundwire/amd_manager.h
@@ -189,6 +189,7 @@
#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
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