linux-kernel - [PATCH v2] hwmon: (k10temp) Support up to 12 CCDs on AMD Family of processors

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Date:   Wed, 24 Nov 2021 10:03:13 -0600
From:   Babu Moger <babu.moger@....com>
To:     <clemens@...isch.de>, <jdelvare@...e.com>, <linux@...ck-us.net>
CC:     <linux-hwmon@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] hwmon: (k10temp) Support up to 12 CCDs on AMD Family of
 processors

The current driver can read the temperatures from upto 8 CCDs
(Core-Complex Die).

The newer AMD Family 19h Models 10h-1Fh and A0h-AFh can support up to
12 CCDs. Update the driver to read up to 12 CCDs.

Signed-off-by: Babu Moger <babu.moger@....com>
---
v2:
Removed the date structure changes based on comment from Guenter.
v1:
https://lore.kernel.org/lkml/163770219414.777059.5794961910830381329.stgit@bmoger-ubuntu/

 drivers/hwmon/k10temp.c |   17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c
index 880990fa4795..4e239bd75b1d 100644
--- a/drivers/hwmon/k10temp.c
+++ b/drivers/hwmon/k10temp.c
@@ -171,6 +171,10 @@ static const char *k10temp_temp_label[] = {
 	"Tccd6",
 	"Tccd7",
 	"Tccd8",
+	"Tccd9",
+	"Tccd10",
+	"Tccd11",
+	"Tccd12",
 };
 
 static int k10temp_read_labels(struct device *dev,
@@ -206,7 +210,7 @@ static int k10temp_read_temp(struct device *dev, u32 attr, int channel,
 			if (*val < 0)
 				*val = 0;
 			break;
-		case 2 ... 9:		/* Tccd{1-8} */
+		case 2 ... 13:		/* Tccd{1-12} */
 			amd_smn_read(amd_pci_dev_to_node_id(data->pdev),
 				     ZEN_CCD_TEMP(data->ccd_offset, channel - 2),
 						  &regval);
@@ -341,6 +345,10 @@ static const struct hwmon_channel_info *k10temp_info[] = {
 			   HWMON_T_INPUT | HWMON_T_LABEL,
 			   HWMON_T_INPUT | HWMON_T_LABEL,
 			   HWMON_T_INPUT | HWMON_T_LABEL,
+			   HWMON_T_INPUT | HWMON_T_LABEL,
+			   HWMON_T_INPUT | HWMON_T_LABEL,
+			   HWMON_T_INPUT | HWMON_T_LABEL,
+			   HWMON_T_INPUT | HWMON_T_LABEL,
 			   HWMON_T_INPUT | HWMON_T_LABEL),
 	NULL
 };
@@ -433,12 +441,15 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 			data->ccd_offset = 0x154;
 			k10temp_get_ccd_support(pdev, data, 8);
 			break;
-		case 0x10 ... 0x1f:
 		case 0x40 ... 0x4f:	/* Yellow Carp */
-		case 0xa0 ... 0xaf:
 			data->ccd_offset = 0x300;
 			k10temp_get_ccd_support(pdev, data, 8);
 			break;
+		case 0x10 ... 0x1f:
+		case 0xa0 ... 0xaf:
+			data->ccd_offset = 0x300;
+			k10temp_get_ccd_support(pdev, data, 12);
+			break;
 		}
 	} else {
 		data->read_htcreg = read_htcreg_pci;