On Wed, 14 Feb 2024, Vishnu Sankar wrote:
> Added non-standard thermal register support for some ThinkPads.
>
> Some of the Thinkpads use a non-standard ECFW which use different
> thermal register addresses.
> This is a fix to correct the wrong temperature reporting on
> those systems.
>
> Tested on Lenovo ThinkPad L13 Yoga Gen2
>
> Suggested-by: Mark Pearson <mpearson-lenovo@squebb.ca>
> Signed-off-by: Vishnu Sankar <vishnuocv@gmail.com>
> ---
> -Improvements as requested.
> -Improved the readability in case TPACPI_THERMAL_TPEC_12.
> -idx < 8 from idx idx <=7 to match idx = 8
> -KILO used from linux/units.h instead of 1000.
> static enum thermal_access_mode thermal_read_mode;
> static bool thermal_use_labels;
> +static bool thermal_with_ns_address; /*Non-standard thermal reg address*/
Comment is missing spaces.
> @@ -6239,6 +6267,20 @@ static int thermal_get_sensor(int idx, s32 *value)
> }
> break;
>
> + /* The Non-standard EC uses 12 Thermal areas */
> + case TPACPI_THERMAL_TPEC_12:
> + if (idx >= 12)
> + return -EINVAL;
> +
> + t = idx < 8 ? TP_EC_THERMAL_TMP0_NS + idx :
> + TP_EC_THERMAL_TMP8_NS + (idx - 8);
> +
> + if (!acpi_ec_read(t, &tmp))
> + return -EIO;
> +
> + *value = tmp * KILO;
Hmm, MILLI would be much more approriate here? But if this relates to
degrees, there is MILLIDEGREE_PER_DEGREE?
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Ilpo,
Thanks for the review.
On Wed, Feb 14, 2024 at 7:23 PM Ilpo Järvinen
<ilpo.jarvinen@linux.intel.com> wrote:
>
> On Wed, 14 Feb 2024, Vishnu Sankar wrote:
>
> > Added non-standard thermal register support for some ThinkPads.
> >
> > Some of the Thinkpads use a non-standard ECFW which uses different
> > thermal register addresses.
> > This is a fix to correct the wrong temperature reporting on
> > those systems.
> >
> > Tested on Lenovo ThinkPad L13 Yoga Gen2
> >
> > Suggested-by: Mark Pearson <mpearson-lenovo@squebb.ca>
> > Signed-off-by: Vishnu Sankar <vishnuocv@gmail.com>
> > ---
> > -Improvements as requested.
> > -Improved the readability in case TPACPI_THERMAL_TPEC_12.
> > -idx < 8 from idx idx <=7 to match idx = 8
> > -KILO used from linux/units.h instead of 1000.
>
> > static enum thermal_access_mode thermal_read_mode;
> > static bool thermal_use_labels;
> > +static bool thermal_with_ns_address; /*Non-standard thermal reg address*/
>
> Comment is missing spaces.
Acked.
>
> > @@ -6239,6 +6267,20 @@ static int thermal_get_sensor(int idx, s32 *value)
> > }
> > break;
> >
> > + /* The Non-standard EC uses 12 Thermal areas */
> > + case TPACPI_THERMAL_TPEC_12:
> > + if (idx >= 12)
> > + return -EINVAL;
> > +
> > + t = idx < 8 ? TP_EC_THERMAL_TMP0_NS + idx :
> > + TP_EC_THERMAL_TMP8_NS + (idx - 8);
> > +
> > + if (!acpi_ec_read(t, &tmp))
> > + return -EIO;
> > +
> > + *value = tmp * KILO;
>
> Hmm, MILLI would be much more approriate here? But if this relates to
> degrees, there is MILLIDEGREE_PER_DEGREE?
Will Change to MILLIDEGREE_PER_DEGREE from KILO
>
> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
>
> --
> i.
@@ -69,6 +69,7 @@
#include <linux/sysfs.h>
#include <linux/types.h>
#include <linux/uaccess.h>
+#include <linux/units.h>
#include <linux/workqueue.h>
#include <acpi/battery.h>
@@ -6126,12 +6127,15 @@ enum thermal_access_mode {
TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
+ TPACPI_THERMAL_TPEC_12, /* Use ACPI EC regs, 12 sensors */
TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
};
enum { /* TPACPI_THERMAL_TPEC_* */
TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
+ TP_EC_THERMAL_TMP0_NS = 0xA8, /* ACPI EC Non-Standard regs TMP 0..7 */
+ TP_EC_THERMAL_TMP8_NS = 0xB8, /* ACPI EC Non-standard regs TMP 8..11 */
TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */
TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
@@ -6144,8 +6148,22 @@ struct ibm_thermal_sensors_struct {
s32 temp[TPACPI_MAX_THERMAL_SENSORS];
};
+static const struct tpacpi_quirk thermal_quirk_table[] __initconst = {
+ /* Non-standard address for thermal registers on some ThinkPads */
+ TPACPI_Q_LNV3('R', '1', 'F', true), /* L13 Yoga Gen 2 */
+ TPACPI_Q_LNV3('N', '2', 'U', true), /* X13 Yoga Gen 2*/
+ TPACPI_Q_LNV3('R', '0', 'R', true), /* L380 */
+ TPACPI_Q_LNV3('R', '1', '5', true), /* L13 Yoga Gen 1*/
+ TPACPI_Q_LNV3('R', '1', '0', true), /* L390 */
+ TPACPI_Q_LNV3('N', '2', 'L', true), /* X13 Yoga Gen 1*/
+ TPACPI_Q_LNV3('R', '0', 'T', true), /* 11e Gen5 GL*/
+ TPACPI_Q_LNV3('R', '1', 'D', true), /* 11e Gen5 GL-R*/
+ TPACPI_Q_LNV3('R', '0', 'V', true), /* 11e Gen5 KL-Y*/
+};
+
static enum thermal_access_mode thermal_read_mode;
static bool thermal_use_labels;
+static bool thermal_with_ns_address; /*Non-standard thermal reg address*/
/* Function to check thermal read mode */
static enum thermal_access_mode thermal_read_mode_check(void)
@@ -6168,6 +6186,16 @@ static enum thermal_access_mode thermal_read_mode_check(void)
if (!acpi_ec_read(TP_EC_FUNCREV, &ver))
pr_warn("Thinkpad ACPI EC unable to access EC version\n");
+ /* Quirks to check non-standard EC */
+ thermal_with_ns_address = tpacpi_check_quirks(thermal_quirk_table,
+ ARRAY_SIZE(thermal_quirk_table));
+
+ /* Support for Thinkpads with non-standard address */
+ if (thermal_with_ns_address) {
+ pr_info("ECFW with non-standard thermal registers found\n");
+ return TPACPI_THERMAL_TPEC_12;
+ }
+
ta1 = ta2 = 0;
for (i = 0; i < 8; i++) {
if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
@@ -6239,6 +6267,20 @@ static int thermal_get_sensor(int idx, s32 *value)
}
break;
+ /* The Non-standard EC uses 12 Thermal areas */
+ case TPACPI_THERMAL_TPEC_12:
+ if (idx >= 12)
+ return -EINVAL;
+
+ t = idx < 8 ? TP_EC_THERMAL_TMP0_NS + idx :
+ TP_EC_THERMAL_TMP8_NS + (idx - 8);
+
+ if (!acpi_ec_read(t, &tmp))
+ return -EIO;
+
+ *value = tmp * KILO;
+ return 0;
+
case TPACPI_THERMAL_ACPI_UPDT:
if (idx <= 7) {
snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
@@ -6284,6 +6326,8 @@ static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
n = 16;
+ else if (thermal_read_mode == TPACPI_THERMAL_TPEC_12)
+ n = 12;
for (i = 0 ; i < n; i++) {
res = thermal_get_sensor(i, &s->temp[i]);
@@ -6382,18 +6426,36 @@ static struct attribute *thermal_temp_input_attr[] = {
NULL
};
+#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
+
static umode_t thermal_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
- if (thermal_read_mode == TPACPI_THERMAL_NONE)
+ struct device_attribute *dev_attr = to_dev_attr(attr);
+ struct sensor_device_attribute *sensor_attr =
+ to_sensor_dev_attr(dev_attr);
+
+ int idx = sensor_attr->index;
+
+ switch (thermal_read_mode) {
+ case TPACPI_THERMAL_NONE:
return 0;
- if (attr == THERMAL_ATTRS(8) || attr == THERMAL_ATTRS(9) ||
- attr == THERMAL_ATTRS(10) || attr == THERMAL_ATTRS(11) ||
- attr == THERMAL_ATTRS(12) || attr == THERMAL_ATTRS(13) ||
- attr == THERMAL_ATTRS(14) || attr == THERMAL_ATTRS(15)) {
- if (thermal_read_mode != TPACPI_THERMAL_TPEC_16)
+ case TPACPI_THERMAL_ACPI_TMP07:
+ case TPACPI_THERMAL_ACPI_UPDT:
+ case TPACPI_THERMAL_TPEC_8:
+ if (idx >= 8)
return 0;
+ break;
+
+ case TPACPI_THERMAL_TPEC_12:
+ if (idx >= 12)
+ return 0;
+ break;
+
+ default:
+ break;
+
}
return attr->mode;