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[platform-next,v2,07/16] platform: mellanox: mlx-platform: Modify power off callback

Message ID 20230814203406.12399-8-vadimp@nvidia.com (mailing list archive)
State Changes Requested, archived
Headers show
Series Add new features and amendments for Nvidia systems | expand

Commit Message

Vadim Pasternak Aug. 14, 2023, 8:33 p.m. UTC 
Extend platform power off callback with kernel_halt() call.

When powering off, the process involves setting a halt bit in the
register space, which is then activated after a certain delay and
power off auxiliary power. By invoking `kernel_halt()` within this
timeframe, the intention is to facilitate a clean system power-off
sequence.

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Michael Shych <michaelsh@nvidia.com>
---
v0->v2:
- Comments pointed out by Ilpo:
  - Amend commit text.
---
 drivers/platform/x86/mlx-platform.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index dce35934cc37..a505f619f337 100644
--- a/drivers/platform/x86/mlx-platform.c
+++ b/drivers/platform/x86/mlx-platform.c
@@ -5539,6 +5539,7 @@  static void mlxplat_poweroff(void)
 	struct mlxplat_priv *priv = platform_get_drvdata(mlxplat_dev);
 
 	regmap_write(priv->regmap, MLXPLAT_CPLD_LPC_REG_GP1_OFFSET, MLXPLAT_CPLD_HALT_MASK);
+	kernel_halt();
 }
 
 static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi)