linux-kernel - [PATCH AUTOSEL 6.13 16/31] platform/x86: thinkpad_acpi: Support for V9 DYTC platform profiles

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Message-Id: <20250218202455.3592096-16-sashal@kernel.org>
Date: Tue, 18 Feb 2025 15:24:36 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Mark Pearson <mpearson-lenovo@...ebb.ca>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Sasha Levin <sashal@...nel.org>,
	hmh@....eng.br,
	hdegoede@...hat.com,
	ibm-acpi-devel@...ts.sourceforge.net,
	platform-driver-x86@...r.kernel.org
Subject: [PATCH AUTOSEL 6.13 16/31] platform/x86: thinkpad_acpi: Support for V9 DYTC platform profiles

From: Mark Pearson <mpearson-lenovo@...ebb.ca>

[ Upstream commit 9cff907cbf8c7fb5345918dbcc7b74a01656f34f ]

Newer Thinkpad AMD platforms are using V9 DYTC and this changes the
profiles used for PSC mode. Add support for this update.
Tested on P14s G5 AMD

Signed-off-by: Mark Pearson <mpearson-lenovo@...ebb.ca>
Link: https://lore.kernel.org/r/20250206193953.58365-1-mpearson-lenovo@squebb.ca
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/platform/x86/thinkpad_acpi.c | 34 ++++++++++++++++++----------
 1 file changed, 22 insertions(+), 12 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 05d77f87e235e..31ec9ec9206cf 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -10329,6 +10329,10 @@ static struct ibm_struct proxsensor_driver_data = {
 #define DYTC_MODE_PSC_BALANCE  5  /* Default mode aka balanced */
 #define DYTC_MODE_PSC_PERFORM  7  /* High power mode aka performance */
 
+#define DYTC_MODE_PSCV9_LOWPOWER 1  /* Low power mode */
+#define DYTC_MODE_PSCV9_BALANCE  3  /* Default mode aka balanced */
+#define DYTC_MODE_PSCV9_PERFORM  4  /* High power mode aka performance */
+
 #define DYTC_ERR_MASK       0xF  /* Bits 0-3 in cmd result are the error result */
 #define DYTC_ERR_SUCCESS      1  /* CMD completed successful */
 
@@ -10349,6 +10353,10 @@ static int dytc_capabilities;
 static bool dytc_mmc_get_available;
 static int profile_force;
 
+static int platform_psc_profile_lowpower = DYTC_MODE_PSC_LOWPOWER;
+static int platform_psc_profile_balanced = DYTC_MODE_PSC_BALANCE;
+static int platform_psc_profile_performance = DYTC_MODE_PSC_PERFORM;
+
 static int convert_dytc_to_profile(int funcmode, int dytcmode,
 		enum platform_profile_option *profile)
 {
@@ -10370,19 +10378,15 @@ static int convert_dytc_to_profile(int funcmode, int dytcmode,
 		}
 		return 0;
 	case DYTC_FUNCTION_PSC:
-		switch (dytcmode) {
-		case DYTC_MODE_PSC_LOWPOWER:
+		if (dytcmode == platform_psc_profile_lowpower)
 			*profile = PLATFORM_PROFILE_LOW_POWER;
-			break;
-		case DYTC_MODE_PSC_BALANCE:
+		else if (dytcmode == platform_psc_profile_balanced)
 			*profile =  PLATFORM_PROFILE_BALANCED;
-			break;
-		case DYTC_MODE_PSC_PERFORM:
+		else if (dytcmode == platform_psc_profile_performance)
 			*profile =  PLATFORM_PROFILE_PERFORMANCE;
-			break;
-		default: /* Unknown mode */
+		else
 			return -EINVAL;
-		}
+
 		return 0;
 	case DYTC_FUNCTION_AMT:
 		/* For now return balanced. It's the closest we have to 'auto' */
@@ -10403,19 +10407,19 @@ static int convert_profile_to_dytc(enum platform_profile_option profile, int *pe
 		if (dytc_capabilities & BIT(DYTC_FC_MMC))
 			*perfmode = DYTC_MODE_MMC_LOWPOWER;
 		else if (dytc_capabilities & BIT(DYTC_FC_PSC))
-			*perfmode = DYTC_MODE_PSC_LOWPOWER;
+			*perfmode = platform_psc_profile_lowpower;
 		break;
 	case PLATFORM_PROFILE_BALANCED:
 		if (dytc_capabilities & BIT(DYTC_FC_MMC))
 			*perfmode = DYTC_MODE_MMC_BALANCE;
 		else if (dytc_capabilities & BIT(DYTC_FC_PSC))
-			*perfmode = DYTC_MODE_PSC_BALANCE;
+			*perfmode = platform_psc_profile_balanced;
 		break;
 	case PLATFORM_PROFILE_PERFORMANCE:
 		if (dytc_capabilities & BIT(DYTC_FC_MMC))
 			*perfmode = DYTC_MODE_MMC_PERFORM;
 		else if (dytc_capabilities & BIT(DYTC_FC_PSC))
-			*perfmode = DYTC_MODE_PSC_PERFORM;
+			*perfmode = platform_psc_profile_performance;
 		break;
 	default: /* Unknown profile */
 		return -EOPNOTSUPP;
@@ -10604,6 +10608,7 @@ static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
 	if (output & BIT(DYTC_QUERY_ENABLE_BIT))
 		dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
 
+	dbg_printk(TPACPI_DBG_INIT, "DYTC version %d\n", dytc_version);
 	/* Check DYTC is enabled and supports mode setting */
 	if (dytc_version < 5)
 		return -ENODEV;
@@ -10642,6 +10647,11 @@ static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
 		}
 	} else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */
 		pr_debug("PSC is supported\n");
+		if (dytc_version >= 9) { /* update profiles for DYTC 9 and up */
+			platform_psc_profile_lowpower = DYTC_MODE_PSCV9_LOWPOWER;
+			platform_psc_profile_balanced = DYTC_MODE_PSCV9_BALANCE;
+			platform_psc_profile_performance = DYTC_MODE_PSCV9_PERFORM;
+		}
 	} else {
 		dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n");
 		return -ENODEV;
-- 
2.39.5