linux-kernel - [PATCH] hwmon: (k10temp): Use cpu_feature

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Message-ID: <20240820053558.1052853-1-superm1@kernel.org>
Date: Tue, 20 Aug 2024 00:35:57 -0500
From: Mario Limonciello <superm1@...nel.org>
To: Yazen Ghannam <yazen.ghannam@....com>,
	Clemens Ladisch <clemens@...isch.de>,
	Jean Delvare <jdelvare@...e.com>,
	Guenter Roeck <linux@...ck-us.net>
Cc: linux-hwmon@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Mario Limonciello <mario.limonciello@....com>
Subject: [PATCH] hwmon: (k10temp): Use cpu_feature_enabled() for detecting zen

From: Mario Limonciello <mario.limonciello@....com>

This removes some boilerplate from the code and will allow adding
future CPUs by just device IDs.

Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
 drivers/hwmon/k10temp.c | 26 ++++++++++----------------
 1 file changed, 10 insertions(+), 16 deletions(-)

diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c
index 543526bac0425..85a7632f3b50a 100644
--- a/drivers/hwmon/k10temp.c
+++ b/drivers/hwmon/k10temp.c
@@ -438,16 +438,21 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		data->disp_negative = true;
 	}
 
-	if (boot_cpu_data.x86 == 0x15 &&
+	data->is_zen = cpu_feature_enabled(X86_FEATURE_ZEN);
+	if (data->is_zen) {
+		data->temp_adjust_mask = ZEN_CUR_TEMP_RANGE_SEL_MASK;
+		data->read_tempreg = read_tempreg_nb_zen;
+	} else if (boot_cpu_data.x86 == 0x15 &&
 	    ((boot_cpu_data.x86_model & 0xf0) == 0x60 ||
 	     (boot_cpu_data.x86_model & 0xf0) == 0x70)) {
 		data->read_htcreg = read_htcreg_nb_f15;
 		data->read_tempreg = read_tempreg_nb_f15;
-	} else if (boot_cpu_data.x86 == 0x17 || boot_cpu_data.x86 == 0x18) {
-		data->temp_adjust_mask = ZEN_CUR_TEMP_RANGE_SEL_MASK;
-		data->read_tempreg = read_tempreg_nb_zen;
-		data->is_zen = true;
+	} else {
+		data->read_htcreg = read_htcreg_pci;
+		data->read_tempreg = read_tempreg_pci;
+	}
 
+	if (boot_cpu_data.x86 == 0x17 || boot_cpu_data.x86 == 0x18) {
 		switch (boot_cpu_data.x86_model) {
 		case 0x1:	/* Zen */
 		case 0x8:	/* Zen+ */
@@ -469,10 +474,6 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 			break;
 		}
 	} else if (boot_cpu_data.x86 == 0x19) {
-		data->temp_adjust_mask = ZEN_CUR_TEMP_RANGE_SEL_MASK;
-		data->read_tempreg = read_tempreg_nb_zen;
-		data->is_zen = true;
-
 		switch (boot_cpu_data.x86_model) {
 		case 0x0 ... 0x1:	/* Zen3 SP3/TR */
 		case 0x8:		/* Zen3 TR Chagall */
@@ -496,13 +497,6 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 			k10temp_get_ccd_support(data, 12);
 			break;
 		}
-	} else if (boot_cpu_data.x86 == 0x1a) {
-		data->temp_adjust_mask = ZEN_CUR_TEMP_RANGE_SEL_MASK;
-		data->read_tempreg = read_tempreg_nb_zen;
-		data->is_zen = true;
-	} else {
-		data->read_htcreg = read_htcreg_pci;
-		data->read_tempreg = read_tempreg_pci;
 	}
 
 	for (i = 0; i < ARRAY_SIZE(tctl_offset_table); i++) {
-- 
2.43.0