From: Paulo Zanoni <paulo.r.zan...@intel.com> On HSW+, one encoder (DDI) can have multiple connectors (HDMI and DP). If no connector is connected, we consider the encoder type to be INTEL_OUTPUT_UNKNOWN. The problem is that we allow user space to set modes on disconnected connectors, so when we try to set a mode on an INTEL_OUTPUT_UNKNOWN connector, we don't know what to do and end up printing a WARN. So on this patch, we introduce pipe_config->ddi_personality to help with that.
When the user space sets a mode on a connector, we check the connector type and match it against intel_encoder->type and set the DDI personality accordingly. Then, after the compute config stage is over, we properly assign the personality to intel_encoder->type. This patch was previously called "drm/i915: Set the digital port encoder personality during modeset". References: http://patchwork.freedesktop.org/patch/17838/ Testcase: igt/kms_setmode/clone-exclusive-crtc Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68463 Credits-to: Damien Lespiau <damien.lesp...@intel.com> (for the previous versions of the patch). Cc: Damien Lespiau <damien.lesp...@intel.com> Cc: Daniel Vetter <daniel.vet...@ffwll.ch> Signed-off-by: Paulo Zanoni <paulo.r.zan...@intel.com> --- drivers/gpu/drm/i915/intel_ddi.c | 97 ++++++++++++++++++++++++++++++++++-- drivers/gpu/drm/i915/intel_display.c | 2 + drivers/gpu/drm/i915/intel_drv.h | 4 ++ 3 files changed, 100 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index cb5367c..5cdc2f4 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1557,18 +1557,109 @@ static void intel_ddi_destroy(struct drm_encoder *encoder) intel_dp_encoder_destroy(encoder); } +static bool intel_ddi_set_personality(struct intel_encoder *encoder, + struct intel_crtc_config *pipe_config) +{ + struct drm_device *dev = encoder->base.dev; + struct intel_connector *connector; + int connectors = 0; + enum port port = intel_ddi_get_encoder_port(encoder); + + list_for_each_entry(connector, &dev->mode_config.connector_list, + base.head) { + + if (connector->new_encoder != encoder) + continue; + + connectors++; + if (WARN_ON(connectors > 1)) + return false; + + switch (connector->base.connector_type) { + case DRM_MODE_CONNECTOR_HDMIA: + case DRM_MODE_CONNECTOR_HDMIB: + pipe_config->ddi_personality = INTEL_OUTPUT_HDMI; + break; + case DRM_MODE_CONNECTOR_DisplayPort: + pipe_config->ddi_personality = INTEL_OUTPUT_DISPLAYPORT; + break; + case DRM_MODE_CONNECTOR_eDP: + pipe_config->ddi_personality = INTEL_OUTPUT_EDP; + break; + default: + WARN(1, "DRM connector type %d\n", + connector->base.connector_type); + return false; + } + + if (encoder->type == pipe_config->ddi_personality) + continue; + + /* We expect eDP to always have encoder->type correctly set, so + * it shouldn't reach this point. */ + if (pipe_config->ddi_personality == INTEL_OUTPUT_EDP) { + DRM_ERROR("DDI %c, type %s marked as eDP\n", + port_name(port), + intel_output_name(encoder->type)); + return false; + } + + /* + * We can't change the DDI type if we already have a connected + * device on this port. The first time a DDI is used though + * (encoder_type is INTEL_OUTPUT_UNKNOWN) and we force a + * connector to be connected (either trought the kernel command + * line or KMS) we need to comply. + */ + if (encoder->type != INTEL_OUTPUT_UNKNOWN && + connector->base.status == connector_status_connected) { + DRM_DEBUG_KMS("Can't set DDI %c personality to %s, it has a connected %s device\n", + port_name(port), + intel_output_name(encoder->type), + intel_output_name(pipe_config->ddi_personality)); + return false; + } + + DRM_DEBUG_KMS("Setting DDI %c personality to %s\n", + port_name(port), + intel_output_name(pipe_config->ddi_personality)); + } + + return true; + +} + +void intel_ddi_commit_personality(struct intel_crtc *crtc) +{ + struct intel_encoder *encoder = intel_ddi_get_crtc_encoder(&crtc->base); + + switch (encoder->type) { + case INTEL_OUTPUT_HDMI: + case INTEL_OUTPUT_DISPLAYPORT: + case INTEL_OUTPUT_EDP: + case INTEL_OUTPUT_UNKNOWN: + encoder->type = crtc->config.ddi_personality; + break; + case INTEL_OUTPUT_ANALOG: + break; + default: + WARN(1, "Output type %s\n", intel_output_name(encoder->type)); + break; + } +} + static bool intel_ddi_compute_config(struct intel_encoder *encoder, struct intel_crtc_config *pipe_config) { - int type = encoder->type; int port = intel_ddi_get_encoder_port(encoder); - WARN(type == INTEL_OUTPUT_UNKNOWN, "compute_config() on unknown output!\n"); + if (!intel_ddi_set_personality(encoder, pipe_config)) + return false; if (port == PORT_A) pipe_config->cpu_transcoder = TRANSCODER_EDP; - if (type == INTEL_OUTPUT_HDMI) + if (pipe_config->ddi_personality == INTEL_OUTPUT_HDMI) return intel_hdmi_compute_config(encoder, pipe_config); else return intel_dp_compute_config(encoder, pipe_config); diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index b5dbc88..16750c4 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -7810,6 +7810,8 @@ static int haswell_crtc_mode_set(struct intel_crtc *crtc, int x, int y, struct drm_framebuffer *fb) { + intel_ddi_commit_personality(crtc); + if (!intel_ddi_pll_select(crtc)) return -EINVAL; diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 5ab813c..bf3267c 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -386,6 +386,9 @@ struct intel_crtc_config { bool dp_encoder_is_mst; int pbn; + + /* This should be INTEL_OUTPUT_*. */ + int ddi_personality; }; struct intel_pipe_wm { @@ -817,6 +820,7 @@ void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder); void intel_ddi_clock_get(struct intel_encoder *encoder, struct intel_crtc_config *pipe_config); void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state); +void intel_ddi_commit_personality(struct intel_crtc *crtc); /* intel_frontbuffer.c */ void intel_fb_obj_invalidate(struct drm_i915_gem_object *obj, -- 2.1.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
