diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_display_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_debugfs.c | 100 |
1 files changed, 100 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 bdeea2e02642..70525623bcdf 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" @@ -1143,6 +1144,51 @@ 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); @@ -1910,6 +1956,7 @@ 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 { @@ -1991,6 +2038,48 @@ static int i915_hdcp_sink_capability_show(struct seq_file *m, void *data) } DEFINE_SHOW_ATTRIBUTE(i915_hdcp_sink_capability); +#define LPSP_CAPABLE(COND) (COND ? seq_puts(m, "LPSP: capable\n") : \ + seq_puts(m, "LPSP: incapable\n")) + +static int i915_lpsp_capability_show(struct seq_file *m, void *data) +{ + struct drm_connector *connector = m->private; + struct intel_encoder *encoder = + intel_attached_encoder(to_intel_connector(connector)); + struct drm_i915_private *i915 = to_i915(connector->dev); + + if (connector->status != connector_status_connected) + return -ENODEV; + + switch (INTEL_GEN(i915)) { + case 12: + /* + * Actually TGL can drive LPSP on port till DDI_C + * but there is no physical connected DDI_C on TGL sku's, + * even driver is not initilizing DDI_C port for gen12. + */ + LPSP_CAPABLE(encoder->port <= PORT_B); + break; + case 11: + LPSP_CAPABLE(connector->connector_type == DRM_MODE_CONNECTOR_DSI || + connector->connector_type == DRM_MODE_CONNECTOR_eDP); + break; + case 10: + case 9: + LPSP_CAPABLE(encoder->port == PORT_A && + (connector->connector_type == DRM_MODE_CONNECTOR_DSI || + connector->connector_type == DRM_MODE_CONNECTOR_eDP || + connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)); + break; + default: + if (IS_HASWELL(i915) || IS_BROADWELL(i915)) + LPSP_CAPABLE(connector->connector_type == DRM_MODE_CONNECTOR_eDP); + } + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(i915_lpsp_capability); + static int i915_dsc_fec_support_show(struct seq_file *m, void *data) { struct drm_connector *connector = m->private; @@ -2134,5 +2223,16 @@ int intel_connector_debugfs_add(struct drm_connector *connector) debugfs_create_file("i915_dsc_fec_support", S_IRUGO, root, connector, &i915_dsc_fec_support_fops); + /* Legacy panels doesn't lpsp on any platform */ + if ((INTEL_GEN(dev_priv) >= 9 || IS_HASWELL(dev_priv) || + IS_BROADWELL(dev_priv)) && + (connector->connector_type == DRM_MODE_CONNECTOR_DSI || + connector->connector_type == DRM_MODE_CONNECTOR_eDP || + connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort || + connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || + connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)) + debugfs_create_file("i915_lpsp_capability", 0444, root, + connector, &i915_lpsp_capability_fops); + return 0; } |