linux-kernel - [PATCH] platform/x86: hp-wmi: add support for quiet thermal profile

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Message-Id: <20220925204244.53506-1-eliadevito@gmail.com>
Date:   Sun, 25 Sep 2022 22:42:45 +0200
From:   Elia Devito <eliadevito@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Elia Devito <eliadevito@...il.com>,
        Philippe Rouquier <bonfire-app@...adoo.fr>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] platform/x86: hp-wmi: add support for quiet thermal profile

The quiet profile is available only on models without dGPU,
so we enable it when the device has only one GPU onboard.

Signed-off-by: Elia Devito <eliadevito@...il.com>
Tested-by: Philippe Rouquier <bonfire-app@...adoo.fr>
---
 drivers/platform/x86/hp-wmi.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index bc7020e9df9e..3e0e67be8001 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -177,7 +177,8 @@ enum hp_thermal_profile_omen_v1 {
 enum hp_thermal_profile {
 	HP_THERMAL_PROFILE_PERFORMANCE	= 0x00,
 	HP_THERMAL_PROFILE_DEFAULT		= 0x01,
-	HP_THERMAL_PROFILE_COOL			= 0x02
+	HP_THERMAL_PROFILE_COOL			= 0x02,
+	HP_THERMAL_PROFILE_QUIET			= 0x03,
 };
 
 #define IS_HWBLOCKED(x) ((x & HPWMI_POWER_FW_OR_HW) != HPWMI_POWER_FW_OR_HW)
@@ -1194,6 +1195,9 @@ static int hp_wmi_platform_profile_get(struct platform_profile_handler *pprof,
 	case HP_THERMAL_PROFILE_COOL:
 		*profile =  PLATFORM_PROFILE_COOL;
 		break;
+	case HP_THERMAL_PROFILE_QUIET:
+		*profile =  PLATFORM_PROFILE_QUIET;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -1216,6 +1220,9 @@ static int hp_wmi_platform_profile_set(struct platform_profile_handler *pprof,
 	case PLATFORM_PROFILE_COOL:
 		tp =  HP_THERMAL_PROFILE_COOL;
 		break;
+	case PLATFORM_PROFILE_QUIET:
+		tp =  HP_THERMAL_PROFILE_QUIET;
+		break;
 	default:
 		return -EOPNOTSUPP;
 	}
@@ -1230,6 +1237,8 @@ static int hp_wmi_platform_profile_set(struct platform_profile_handler *pprof,
 static int thermal_profile_setup(void)
 {
 	int err, tp;
+	unsigned int n_gpu = 0;
+	const struct dmi_device *dev = NULL;
 
 	if (is_omen_thermal_profile()) {
 		tp = omen_thermal_profile_get();
@@ -1263,6 +1272,16 @@ static int thermal_profile_setup(void)
 
 		platform_profile_handler.profile_get = hp_wmi_platform_profile_get;
 		platform_profile_handler.profile_set = hp_wmi_platform_profile_set;
+
+		/*
+		 * The quiet profile is available only on models without dGPU,
+		 * so we enable it when the device has only one GPU onboard.
+		 */
+		while ((dev = dmi_find_device(DMI_DEV_TYPE_VIDEO, NULL, dev)))
+			n_gpu++;
+
+		if (n_gpu == 1)
+			set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
 	}
 
 	set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
-- 
2.37.2