diff options
| -rw-r--r-- | drivers/thermal/intel/int340x_thermal/processor_thermal_soc_slider.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_soc_slider.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_soc_slider.c index ffbad6b4326e..20d70cb01542 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_soc_slider.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_soc_slider.c @@ -90,6 +90,47 @@ static const struct kernel_param_ops slider_def_balance_ops = { module_param_cb(slider_balance, &slider_def_balance_ops, NULL, 0644); MODULE_PARM_DESC(slider_balance, "Set slider default value for balance"); +static u8 slider_offset; + +static int slider_def_offset_set(const char *arg, const struct kernel_param *kp) +{ + u8 offset; + int ret; + + guard(mutex)(&slider_param_lock); + + ret = kstrtou8(arg, 16, &offset); + if (!ret) { + if (offset > SOC_SLIDER_VALUE_MAXIMUM) + return -EINVAL; + + slider_offset = offset; + } + + return ret; +} + +static int slider_def_offset_get(char *buf, const struct kernel_param *kp) +{ + guard(mutex)(&slider_param_lock); + return sysfs_emit(buf, "%02x\n", slider_offset); +} + +static const struct kernel_param_ops slider_offset_ops = { + .set = slider_def_offset_set, + .get = slider_def_offset_get, +}; + +/* + * To enhance power efficiency dynamically, the firmware can optionally + * auto-adjust the slider value based on the current workload. This + * adjustment is controlled by the "slider_offset" module parameter. + * This offset permits the firmware to increase the slider value + * up to and including "SoC slider + slider offset,". + */ +module_param_cb(slider_offset, &slider_offset_ops, NULL, 0644); +MODULE_PARM_DESC(slider_offset, "Set slider offset"); + /* Convert from platform power profile option to SoC slider value */ static int convert_profile_to_power_slider(enum platform_profile_option profile) { @@ -130,6 +171,8 @@ static inline void write_soc_slider(struct proc_thermal_device *proc_priv, u64 v writeq(val, proc_priv->mmio_base + SOC_POWER_SLIDER_OFFSET); } +#define SLIDER_OFFSET_MASK GENMASK_ULL(6, 4) + static void set_soc_power_profile(struct proc_thermal_device *proc_priv, int slider) { u64 val; @@ -137,6 +180,11 @@ static void set_soc_power_profile(struct proc_thermal_device *proc_priv, int sli val = read_soc_slider(proc_priv); val &= ~SLIDER_MASK; val |= FIELD_PREP(SLIDER_MASK, slider) | BIT(SLIDER_ENABLE_BIT); + + /* Set the slider offset from module params */ + val &= ~SLIDER_OFFSET_MASK; + val |= FIELD_PREP(SLIDER_OFFSET_MASK, slider_offset); + write_soc_slider(proc_priv, val); } |