On Thu, Apr 18, 2019 at 5:03 AM Evan Quan <evan.quan@xxxxxxx> wrote:
>
> Expose temp[1-3]_label hwmon interfaces. While temp2_label
> and temp3_label are visible for SOC15 dGPUs only.
>
> Change-Id: I7f1e10c52ec21d272027554cdf6da97103e0be58
> Signed-off-by: Evan Quan <evan.quan@xxxxxxx>
I'd suggest making this one last in the series since otherwise we'll
have labels without temps for a few commits.
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 40 +++++++++++++++++++
> .../gpu/drm/amd/include/kgd_pp_interface.h | 7 ++++
> 2 files changed, 47 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> index 552127b74f78..c17eb228417e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> @@ -120,6 +120,15 @@ static const struct cg_flag_name clocks[] = {
> {0, NULL},
> };
>
> +static const struct hwmon_temp_label {
> + enum PP_HWMON_TEMP channel;
> + const char *label;
> +} temp_label[] = {
> + {PP_TEMP_JUNCTION, "junction"},
> + {PP_TEMP_EDGE, "edge"},
> + {PP_TEMP_MEM, "mem"},
> +};
> +
> void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev)
> {
> if (adev->pm.dpm_enabled) {
> @@ -1457,6 +1466,20 @@ static ssize_t amdgpu_hwmon_show_temp_thresh(struct device *dev,
> return snprintf(buf, PAGE_SIZE, "%d\n", temp);
> }
>
> +
> +static ssize_t amdgpu_hwmon_show_temp_label(struct device *dev,
> + struct device_attribute *attr,
> + char *buf)
> +{
> + struct amdgpu_device *adev = dev_get_drvdata(dev);
> + int channel = to_sensor_dev_attr(attr)->index;
> +
> + if (channel >= PP_TEMP_MAX)
> + return -EINVAL;
> +
> + return snprintf(buf, PAGE_SIZE, "%s\n", temp_label[channel].label);
> +}
> +
> static ssize_t amdgpu_hwmon_get_pwm1_enable(struct device *dev,
> struct device_attribute *attr,
> char *buf)
> @@ -2026,6 +2049,9 @@ static ssize_t amdgpu_hwmon_show_mclk_label(struct device *dev,
> *
> * hwmon interfaces for GPU temperature:
> *
> + * - temp[1-3]_label: temperature channel label
> + * - temp2_label and temp3_label are supported on SOC15 dGPUs only
> + *
> * - temp1_input: the on die GPU temperature in millidegrees Celsius
> *
> * - temp1_crit: temperature critical max value in millidegrees Celsius
> @@ -2081,6 +2107,9 @@ static ssize_t amdgpu_hwmon_show_mclk_label(struct device *dev,
> static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, amdgpu_hwmon_show_temp, NULL, 0);
> static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, amdgpu_hwmon_show_temp_thresh, NULL, 0);
> static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO, amdgpu_hwmon_show_temp_thresh, NULL, 1);
> +static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, amdgpu_hwmon_show_temp_label, NULL, PP_TEMP_JUNCTION);
> +static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, amdgpu_hwmon_show_temp_label, NULL, PP_TEMP_EDGE);
> +static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, amdgpu_hwmon_show_temp_label, NULL, PP_TEMP_MEM);
> static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_pwm1, amdgpu_hwmon_set_pwm1, 0);
> static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_pwm1_enable, amdgpu_hwmon_set_pwm1_enable, 0);
> static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO, amdgpu_hwmon_get_pwm1_min, NULL, 0);
> @@ -2107,6 +2136,9 @@ static struct attribute *hwmon_attributes[] = {
> &sensor_dev_attr_temp1_input.dev_attr.attr,
> &sensor_dev_attr_temp1_crit.dev_attr.attr,
> &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
> + &sensor_dev_attr_temp1_label.dev_attr.attr,
> + &sensor_dev_attr_temp2_label.dev_attr.attr,
> + &sensor_dev_attr_temp3_label.dev_attr.attr,
> &sensor_dev_attr_pwm1.dev_attr.attr,
> &sensor_dev_attr_pwm1_enable.dev_attr.attr,
> &sensor_dev_attr_pwm1_min.dev_attr.attr,
> @@ -2229,6 +2261,14 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
> attr == &sensor_dev_attr_freq2_label.dev_attr.attr))
> return 0;
>
> + /* only SOC15 dGPUs support edge and mem temperatures */
> + if (((adev->flags & AMD_IS_APU) ||
> + adev->asic_type < CHIP_VEGA10) &&
> + (attr == &sensor_dev_attr_temp2_label.dev_attr.attr ||
> + attr == &sensor_dev_attr_temp3_label.dev_attr.attr))
> + return 0;
> +
> +
> return effective_mode;
> }
>
> diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
> index 2b579ba9b685..17324c0d503e 100644
> --- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h
> +++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
> @@ -159,6 +159,13 @@ struct pp_states_info {
> uint32_t states[16];
> };
>
> +enum PP_HWMON_TEMP {
> + PP_TEMP_JUNCTION = 0,
> + PP_TEMP_EDGE,
> + PP_TEMP_MEM,
> + PP_TEMP_MAX
> +};
> +
> #define PP_GROUP_MASK 0xF0000000
> #define PP_GROUP_SHIFT 28
>
> --
> 2.21.0
>
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