Industrial processor i3255 supports temperatures -40 deg celcius
to 105 deg Celcius. The current implementation of k10temp_read_temp
rounds off any negative
temperatures to '0'. To fix this, the following changes have been made.
Added a flag 'disp_negative' to struct k10temp_data to support
AMD i3255 processors. Flag 'disp_negative' is set if 3255 processor
is found during k10temp_probe. Flag 'disp_negative' is used to determine
whether to round off negative temperatures to '0' in k10temp_read_temp.
Signed-off-by: Baskaran Kannan <Baski.Kannan@xxxxxxx>
---
drivers/hwmon/k10temp.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c
index 7b177b9fbb09..2613420d43ff 100644
--- a/drivers/hwmon/k10temp.c
+++ b/drivers/hwmon/k10temp.c
@@ -86,6 +86,7 @@ struct k10temp_data {
u32 show_temp;
bool is_zen;
u32 ccd_offset;
+ bool disp_negative;
};
#define TCTL_BIT 0
@@ -204,12 +205,12 @@ static int k10temp_read_temp(struct device *dev, u32 attr, int channel,
switch (channel) {
case 0: /* Tctl */
*val = get_raw_temp(data);
- if (*val < 0)
+ if (*val < 0 && !data->disp_negative)
*val = 0;
break;
case 1: /* Tdie */
*val = get_raw_temp(data) - data->temp_offset;
- if (*val < 0)
+ if (*val < 0 && !data->disp_negative)
*val = 0;
break;
case 2 ... 13: /* Tccd{1-12} */
@@ -405,6 +406,9 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
data->pdev = pdev;
data->show_temp |= BIT(TCTL_BIT); /* Always show Tctl */
+ if (boot_cpu_data.x86 == 0x17 && boot_cpu_data.x86_model < 0x8)
+ data->disp_negative = true;
+
if (boot_cpu_data.x86 == 0x15 &&
((boot_cpu_data.x86_model & 0xf0) == 0x60 ||
(boot_cpu_data.x86_model & 0xf0) == 0x70)) {
--
2.25.1
