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authorDavid E. Box <david.e.box@linux.intel.com>2023-06-08 01:38:49 +0200
committerHans de Goede <hdegoede@redhat.com>2023-06-13 12:30:02 +0200
commitf2b689ab2f8cc089cc7659c323f282e6a1fb6d64 (patch)
tree1899f29f62b4425cf2b7505908f0f596bc192aa5 /drivers/platform
parentplatform/x86/intel/pmc: Add resume callback (diff)
downloadlinux-f2b689ab2f8cc089cc7659c323f282e6a1fb6d64.tar.xz
linux-f2b689ab2f8cc089cc7659c323f282e6a1fb6d64.zip
platform/x86/intel/pmc/mtl: Put devices in D3 during resume
An earlier commit placed some driverless devices in D3 during boot so that they don't block package cstate entry on Meteor Lake. Also place these devices in D3 after resume from suspend. Fixes: 336ba968d3e3 ("platform/x86/intel/pmc/mtl: Put GNA/IPU/VPU devices in D3") Signed-off-by: David E. Box <david.e.box@linux.intel.com> Link: https://lore.kernel.org/r/20230607233849.239047-2-david.e.box@linux.intel.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/intel/pmc/mtl.c27
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/platform/x86/intel/pmc/mtl.c b/drivers/platform/x86/intel/pmc/mtl.c
index e8cc156412ce..2b00ad9da621 100644
--- a/drivers/platform/x86/intel/pmc/mtl.c
+++ b/drivers/platform/x86/intel/pmc/mtl.c
@@ -68,16 +68,29 @@ static void mtl_set_device_d3(unsigned int device)
}
}
+/*
+ * Set power state of select devices that do not have drivers to D3
+ * so that they do not block Package C entry.
+ */
+static void mtl_d3_fixup(void)
+{
+ mtl_set_device_d3(MTL_GNA_PCI_DEV);
+ mtl_set_device_d3(MTL_IPU_PCI_DEV);
+ mtl_set_device_d3(MTL_VPU_PCI_DEV);
+}
+
+static int mtl_resume(struct pmc_dev *pmcdev)
+{
+ mtl_d3_fixup();
+ return pmc_core_resume_common(pmcdev);
+}
+
void mtl_core_init(struct pmc_dev *pmcdev)
{
pmcdev->map = &mtl_reg_map;
pmcdev->core_configure = mtl_core_configure;
- /*
- * Set power state of select devices that do not have drivers to D3
- * so that they do not block Package C entry.
- */
- mtl_set_device_d3(MTL_GNA_PCI_DEV);
- mtl_set_device_d3(MTL_IPU_PCI_DEV);
- mtl_set_device_d3(MTL_VPU_PCI_DEV);
+ mtl_d3_fixup();
+
+ pmcdev->resume = mtl_resume;
}