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soundwire: amd: fix for wake interrupt handling for clockstop mode 

[ Upstream commit 63dc588e7a ]

When SoundWire Wake interrupt is enabled along with SoundWire Wake
enable register, SoundWire wake interrupt will be reported
when SoundWire manager is in D3 state and ACP is in D3 state.

When SoundWire Wake interrupt is reported, it will invoke runtime
resume of the SoundWire manager device.

In case of system level suspend, for ClockStop Mode SoundWire Wake
interrupt should be disabled.
It should be enabled only for runtime suspend scenario.
Change wake interrupt enable/disable sequence for ClockStop Mode in
system level suspend and runtime suspend sceanrio.

Fixes: 9cf1efc5ed ("soundwire: amd: add pm_prepare callback and pm ops support")
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20240327063143.2266464-2-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Vijendar Mukunda 2024-03-27 12:01:43 +05:30 committed by Greg Kroah-Hartman
parent 999c13ed12
commit 6321499010
2 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/soundwire/amd_manager.c
View File

@ -148,6 +148,19 @@ static void amd_sdw_set_frameshape(struct amd_sdw_manager *amd_manager)
writel(frame_size, amd_manager->mmio + ACP_SW_FRAMESIZE);
}
static void amd_sdw_wake_enable(struct amd_sdw_manager *amd_manager, bool enable)
{
u32 wake_ctrl;
wake_ctrl = readl(amd_manager->mmio + ACP_SW_STATE_CHANGE_STATUS_MASK_8TO11);
if (enable)
wake_ctrl |= AMD_SDW_WAKE_INTR_MASK;
else
wake_ctrl &= ~AMD_SDW_WAKE_INTR_MASK;
writel(wake_ctrl, amd_manager->mmio + ACP_SW_STATE_CHANGE_STATUS_MASK_8TO11);
}
static void amd_sdw_ctl_word_prep(u32 *lower_word, u32 *upper_word, struct sdw_msg *msg,
int cmd_offset)
{
@ -1122,6 +1135,7 @@ static int __maybe_unused amd_suspend(struct device *dev)
}
if (amd_manager->power_mode_mask & AMD_SDW_CLK_STOP_MODE) {
amd_sdw_wake_enable(amd_manager, false);
return amd_sdw_clock_stop(amd_manager);
} else if (amd_manager->power_mode_mask & AMD_SDW_POWER_OFF_MODE) {
/*
@ -1148,6 +1162,7 @@ static int __maybe_unused amd_suspend_runtime(struct device *dev)
return 0;
}
if (amd_manager->power_mode_mask & AMD_SDW_CLK_STOP_MODE) {
amd_sdw_wake_enable(amd_manager, true);
return amd_sdw_clock_stop(amd_manager);
} else if (amd_manager->power_mode_mask & AMD_SDW_POWER_OFF_MODE) {
ret = amd_sdw_clock_stop(amd_manager);

3
drivers/soundwire/amd_manager.h
View File

@ -152,7 +152,7 @@
#define AMD_SDW0_EXT_INTR_MASK 0x200000
#define AMD_SDW1_EXT_INTR_MASK 4
#define AMD_SDW_IRQ_MASK_0TO7 0x77777777
#define AMD_SDW_IRQ_MASK_8TO11 0x000d7777
#define AMD_SDW_IRQ_MASK_8TO11 0x000c7777
#define AMD_SDW_IRQ_ERROR_MASK 0xff
#define AMD_SDW_MAX_FREQ_NUM 1
#define AMD_SDW0_MAX_TX_PORTS 3
@ -190,6 +190,7 @@
#define AMD_SDW_CLK_RESUME_REQ 2
#define AMD_SDW_CLK_RESUME_DONE 3
#define AMD_SDW_WAKE_STAT_MASK BIT(16)
#define AMD_SDW_WAKE_INTR_MASK BIT(16)
static u32 amd_sdw_freq_tbl[AMD_SDW_MAX_FREQ_NUM] = {
AMD_SDW_DEFAULT_CLK_FREQ,