On Tue, 15 Feb 2022 at 15:11, Eddie James <eajames@xxxxxxxxxxxxx> wrote:
>
> Add sysfs entries for DVFS due to a VRM Vdd over-temperature condition,
> and add the GPU throttling condition bits (such that if bit 1 is set,
> GPU1 is throttling).
>
> Signed-off-by: Eddie James <eajames@xxxxxxxxxxxxx>
Reviewed-by: Joel Stanley <joel@xxxxxxxxx>
> ---
> drivers/hwmon/occ/sysfs.c | 24 ++++++++++++++++++++++++
> 1 file changed, 24 insertions(+)
>
> diff --git a/drivers/hwmon/occ/sysfs.c b/drivers/hwmon/occ/sysfs.c
> index 88f655887c95..b2f788a77746 100644
> --- a/drivers/hwmon/occ/sysfs.c
> +++ b/drivers/hwmon/occ/sysfs.c
> @@ -19,6 +19,8 @@
> #define OCC_EXT_STAT_DVFS_POWER BIT(6)
> #define OCC_EXT_STAT_MEM_THROTTLE BIT(5)
> #define OCC_EXT_STAT_QUICK_DROP BIT(4)
> +#define OCC_EXT_STAT_DVFS_VDD BIT(3)
> +#define OCC_EXT_STAT_GPU_THROTTLE GENMASK(2, 0)
>
> static ssize_t occ_sysfs_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> @@ -69,6 +71,12 @@ static ssize_t occ_sysfs_show(struct device *dev,
> case 9:
> val = header->mode;
> break;
> + case 10:
> + val = !!(header->ext_status & OCC_EXT_STAT_DVFS_VDD);
> + break;
> + case 11:
> + val = header->ext_status & OCC_EXT_STAT_GPU_THROTTLE;
> + break;
> default:
> return -EINVAL;
> }
> @@ -96,6 +104,8 @@ static SENSOR_DEVICE_ATTR(occ_state, 0444, occ_sysfs_show, NULL, 6);
> static SENSOR_DEVICE_ATTR(occs_present, 0444, occ_sysfs_show, NULL, 7);
> static SENSOR_DEVICE_ATTR(occ_ips_status, 0444, occ_sysfs_show, NULL, 8);
> static SENSOR_DEVICE_ATTR(occ_mode, 0444, occ_sysfs_show, NULL, 9);
> +static SENSOR_DEVICE_ATTR(occ_dvfs_vdd, 0444, occ_sysfs_show, NULL, 10);
> +static SENSOR_DEVICE_ATTR(occ_gpu_throttle, 0444, occ_sysfs_show, NULL, 11);
> static DEVICE_ATTR_RO(occ_error);
>
> static struct attribute *occ_attributes[] = {
> @@ -109,6 +119,8 @@ static struct attribute *occ_attributes[] = {
> &sensor_dev_attr_occs_present.dev_attr.attr,
> &sensor_dev_attr_occ_ips_status.dev_attr.attr,
> &sensor_dev_attr_occ_mode.dev_attr.attr,
> + &sensor_dev_attr_occ_dvfs_vdd.dev_attr.attr,
> + &sensor_dev_attr_occ_gpu_throttle.dev_attr.attr,
> &dev_attr_occ_error.attr,
> NULL
> };
> @@ -166,6 +178,18 @@ void occ_sysfs_poll_done(struct occ *occ)
> sysfs_notify(&occ->bus_dev->kobj, NULL, name);
> }
>
> + if ((header->ext_status & OCC_EXT_STAT_DVFS_VDD) !=
> + (occ->prev_ext_stat & OCC_EXT_STAT_DVFS_VDD)) {
> + name = sensor_dev_attr_occ_dvfs_vdd.dev_attr.attr.name;
> + sysfs_notify(&occ->bus_dev->kobj, NULL, name);
> + }
> +
> + if ((header->ext_status & OCC_EXT_STAT_GPU_THROTTLE) !=
> + (occ->prev_ext_stat & OCC_EXT_STAT_GPU_THROTTLE)) {
> + name = sensor_dev_attr_occ_gpu_throttle.dev_attr.attr.name;
> + sysfs_notify(&occ->bus_dev->kobj, NULL, name);
> + }
> +
> if ((header->status & OCC_STAT_MASTER) &&
> header->occs_present != occ->prev_occs_present) {
> name = sensor_dev_attr_occs_present.dev_attr.attr.name;
> --
> 2.27.0
>
