diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_debugfs.c | 47 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_power.h | 2 |
2 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index 69be0e05e97f..3d9dc27478b3 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -9,6 +9,7 @@ #include "i915_debugfs.h" #include "intel_csr.h" #include "intel_display_debugfs.h" +#include "intel_display_power.h" #include "intel_display_types.h" #include "intel_dp.h" #include "intel_fbc.h" @@ -1149,6 +1150,51 @@ static int i915_drrs_status(struct seq_file *m, void *unused) return 0; } +#define LPSP_STATUS(COND) (COND ? seq_puts(m, "LPSP: enabled\n") : \ + seq_puts(m, "LPSP: disabled\n")) + +static bool +intel_lpsp_power_well_enabled(struct drm_i915_private *i915, + enum i915_power_well_id power_well_id) +{ + intel_wakeref_t wakeref; + bool is_enabled; + + wakeref = intel_runtime_pm_get(&i915->runtime_pm); + is_enabled = intel_display_power_well_is_enabled(i915, + power_well_id); + intel_runtime_pm_put(&i915->runtime_pm, wakeref); + + return is_enabled; +} + +static int i915_lpsp_status(struct seq_file *m, void *unused) +{ + struct drm_i915_private *i915 = node_to_i915(m->private); + + switch (INTEL_GEN(i915)) { + case 12: + case 11: + LPSP_STATUS(!intel_lpsp_power_well_enabled(i915, ICL_DISP_PW_3)); + break; + case 10: + case 9: + LPSP_STATUS(!intel_lpsp_power_well_enabled(i915, SKL_DISP_PW_2)); + break; + default: + /* + * Apart from HASWELL/BROADWELL other legacy platform doesn't + * support lpsp. + */ + if (IS_HASWELL(i915) || IS_BROADWELL(i915)) + LPSP_STATUS(!intel_lpsp_power_well_enabled(i915, HSW_DISP_PW_GLOBAL)); + else + seq_puts(m, "LPSP: not supported\n"); + } + + return 0; +} + static int i915_dp_mst_info(struct seq_file *m, void *unused) { struct drm_i915_private *dev_priv = node_to_i915(m->private); @@ -1916,6 +1962,7 @@ static const struct drm_info_list intel_display_debugfs_list[] = { {"i915_dp_mst_info", i915_dp_mst_info, 0}, {"i915_ddb_info", i915_ddb_info, 0}, {"i915_drrs_status", i915_drrs_status, 0}, + {"i915_lpsp_status", i915_lpsp_status, 0}, }; static const struct { diff --git a/drivers/gpu/drm/i915/display/intel_display_power.h b/drivers/gpu/drm/i915/display/intel_display_power.h index 56cbae6327b7..14c5ad20287f 100644 --- a/drivers/gpu/drm/i915/display/intel_display_power.h +++ b/drivers/gpu/drm/i915/display/intel_display_power.h @@ -266,6 +266,8 @@ intel_display_power_domain_str(enum intel_display_power_domain domain); bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv, enum intel_display_power_domain domain); +bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv, + enum i915_power_well_id power_well_id); bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv, enum intel_display_power_domain domain); intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv, |