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platform/x86/amd/pmc: Use FCH_PM_BASE definition

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The s2idle MMIO quirk uses a scratch register in the FCH.
Adjust the code to clarify that.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Cc: Yazen Ghannam <yazen.ghannam@amd.com>
Cc: platform-driver-x86@vger.kernel.org
Link: https://lore.kernel.org/r/20250422234830.2840784-5-superm1@kernel.org
This commit is contained in:
Mario Limonciello 2025-04-22 18:48:29 -05:00 committed by Ingo Molnar
parent 624b0d5696
commit 7094702a9e
2 changed files with 3 additions and 1 deletions
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1
arch/x86/include/asm/amd/fch.h
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@ -7,5 +7,6 @@
/* Register offsets from PM base: */
#define FCH_PM_DECODEEN 0x00
#define FCH_PM_DECODEEN_SMBUS0SEL GENMASK(20, 19)
#define FCH_PM_SCRATCH 0x80
#endif /* _ASM_X86_AMD_FCH_H_ */

3
drivers/platform/x86/amd/pmc/pmc-quirks.c
View File

@ -11,6 +11,7 @@
#include <linux/dmi.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <asm/amd/fch.h>
#include "pmc.h"
@ -20,7 +21,7 @@ struct quirk_entry {
};
static struct quirk_entry quirk_s2idle_bug = {
.s2idle_bug_mmio = 0xfed80380,
.s2idle_bug_mmio = FCH_PM_BASE + FCH_PM_SCRATCH,
};
static struct quirk_entry quirk_spurious_8042 = {