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soundwire: amd: set ACP_PME_EN during runtime suspend sequence

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Set ACP_PME_EN to 1 during runtime suspend sequence as per design flow
for ACP7.0 & ACP7.1 platforms.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20250207065841.4718-6-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Vijendar Mukunda 2025-02-07 12:28:40 +05:30 committed by Vinod Koul
parent 829c3e1cb4
commit 5818ed3636
2 changed files with 10 additions and 0 deletions
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9
drivers/soundwire/amd_manager.c
View File

@ -1211,6 +1211,7 @@ static int __maybe_unused amd_suspend_runtime(struct device *dev)
struct amd_sdw_manager *amd_manager = dev_get_drvdata(dev);
struct sdw_bus *bus = &amd_manager->bus;
int ret;
u32 val;
if (bus->prop.hw_disabled) {
dev_dbg(bus->dev, "SoundWire manager %d is disabled,\n",
@ -1235,6 +1236,14 @@ static int __maybe_unused amd_suspend_runtime(struct device *dev)
ret = amd_sdw_set_device_state(amd_manager, AMD_SDW_DEVICE_STATE_D3);
if (ret)
return ret;
if (amd_manager->wake_en_mask) {
val = readl(amd_manager->acp_mmio + ACP_PME_EN);
if (!val) {
writel(1, amd_manager->acp_mmio + ACP_PME_EN);
val = readl(amd_manager->acp_mmio + ACP_PME_EN);
dev_dbg(amd_manager->dev, "ACP_PME_EN:0x%x\n", val);
}
}
}
return 0;
}

1
drivers/soundwire/amd_manager.h
View File

@ -199,6 +199,7 @@
#define AMD_SDW1_DEVICE_STATE_MASK GENMASK(3, 2)
#define AMD_SDW_DEVICE_STATE_D0 0
#define AMD_SDW_DEVICE_STATE_D3 3
#define ACP_PME_EN 0x0001400
static u32 amd_sdw_freq_tbl[AMD_SDW_MAX_FREQ_NUM] = {
AMD_SDW_DEFAULT_CLK_FREQ,