diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_hdmi.c | 132 |
1 files changed, 129 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 9fb9501..0d0273e 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -42,6 +42,9 @@ struct intel_hdmi { u32 sdvox_reg; int ddc_bus; bool has_hdmi_sink; + bool has_audio; + int force_audio; + struct drm_property *force_audio_property; }; static struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder) @@ -55,6 +58,60 @@ static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector) struct intel_hdmi, base); } +void intel_dip_infoframe_csum(struct dip_infoframe *avi_if) +{ + uint8_t *data = (uint8_t *)avi_if; + uint8_t sum = 0; + unsigned i; + + avi_if->checksum = 0; + avi_if->ecc = 0; + + for (i = 0; i < sizeof(*avi_if); i++) + sum += data[i]; + + avi_if->checksum = 0x100 - sum; +} + +static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder) +{ + struct dip_infoframe avi_if = { + .type = DIP_TYPE_AVI, + .ver = DIP_VERSION_AVI, + .len = DIP_LEN_AVI, + }; + uint32_t *data = (uint32_t *)&avi_if; + struct drm_device *dev = encoder->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder); + u32 port; + unsigned i; + + if (!intel_hdmi->has_hdmi_sink) + return; + + /* XXX first guess at handling video port, is this corrent? */ + if (intel_hdmi->sdvox_reg == SDVOB) + port = VIDEO_DIP_PORT_B; + else if (intel_hdmi->sdvox_reg == SDVOC) + port = VIDEO_DIP_PORT_C; + else + return; + + I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | port | + VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC); + + intel_dip_infoframe_csum(&avi_if); + for (i = 0; i < sizeof(avi_if); i += 4) { + I915_WRITE(VIDEO_DIP_DATA, *data); + data++; + } + + I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | port | + VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC | + VIDEO_DIP_ENABLE_AVI); +} + static void intel_hdmi_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) @@ -72,10 +129,13 @@ static void intel_hdmi_mode_set(struct drm_encoder *encoder, if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) sdvox |= SDVO_HSYNC_ACTIVE_HIGH; - if (intel_hdmi->has_hdmi_sink) { + /* Required on CPT */ + if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev)) + sdvox |= HDMI_MODE_SELECT; + + if (intel_hdmi->has_audio) { sdvox |= SDVO_AUDIO_ENABLE; - if (HAS_PCH_CPT(dev)) - sdvox |= HDMI_MODE_SELECT; + sdvox |= SDVO_NULL_PACKETS_DURING_VSYNC; } if (intel_crtc->pipe == 1) { @@ -87,6 +147,8 @@ static void intel_hdmi_mode_set(struct drm_encoder *encoder, I915_WRITE(intel_hdmi->sdvox_reg, sdvox); POSTING_READ(intel_hdmi->sdvox_reg); + + intel_hdmi_set_avi_infoframe(encoder); } static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode) @@ -154,6 +216,7 @@ intel_hdmi_detect(struct drm_connector *connector, bool force) enum drm_connector_status status = connector_status_disconnected; intel_hdmi->has_hdmi_sink = false; + intel_hdmi->has_audio = false; edid = drm_get_edid(connector, &dev_priv->gmbus[intel_hdmi->ddc_bus].adapter); @@ -161,11 +224,17 @@ intel_hdmi_detect(struct drm_connector *connector, bool force) if (edid->input & DRM_EDID_INPUT_DIGITAL) { status = connector_status_connected; intel_hdmi->has_hdmi_sink = drm_detect_hdmi_monitor(edid); + intel_hdmi->has_audio = drm_detect_monitor_audio(edid); } connector->display_info.raw_edid = NULL; kfree(edid); } + if (status == connector_status_connected) { + if (intel_hdmi->force_audio) + intel_hdmi->has_audio = intel_hdmi->force_audio > 0; + } + return status; } @@ -182,6 +251,46 @@ static int intel_hdmi_get_modes(struct drm_connector *connector) &dev_priv->gmbus[intel_hdmi->ddc_bus].adapter); } +static int +intel_hdmi_set_property(struct drm_connector *connector, + struct drm_property *property, + uint64_t val) +{ + struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector); + int ret; + + ret = drm_connector_property_set_value(connector, property, val); + if (ret) + return ret; + + if (property == intel_hdmi->force_audio_property) { + if (val == intel_hdmi->force_audio) + return 0; + + intel_hdmi->force_audio = val; + + if (val > 0 && intel_hdmi->has_audio) + return 0; + if (val < 0 && !intel_hdmi->has_audio) + return 0; + + intel_hdmi->has_audio = val > 0; + goto done; + } + + return -EINVAL; + +done: + if (intel_hdmi->base.base.crtc) { + struct drm_crtc *crtc = intel_hdmi->base.base.crtc; + drm_crtc_helper_set_mode(crtc, &crtc->mode, + crtc->x, crtc->y, + crtc->fb); + } + + return 0; +} + static void intel_hdmi_destroy(struct drm_connector *connector) { drm_sysfs_connector_remove(connector); @@ -201,6 +310,7 @@ static const struct drm_connector_funcs intel_hdmi_connector_funcs = { .dpms = drm_helper_connector_dpms, .detect = intel_hdmi_detect, .fill_modes = drm_helper_probe_single_connector_modes, + .set_property = intel_hdmi_set_property, .destroy = intel_hdmi_destroy, }; @@ -214,6 +324,20 @@ static const struct drm_encoder_funcs intel_hdmi_enc_funcs = { .destroy = intel_encoder_destroy, }; +static void +intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + + intel_hdmi->force_audio_property = + drm_property_create(dev, DRM_MODE_PROP_RANGE, "force_audio", 2); + if (intel_hdmi->force_audio_property) { + intel_hdmi->force_audio_property->values[0] = -1; + intel_hdmi->force_audio_property->values[1] = 1; + drm_connector_attach_property(connector, intel_hdmi->force_audio_property, 0); + } +} + void intel_hdmi_init(struct drm_device *dev, int sdvox_reg) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -275,6 +399,8 @@ void intel_hdmi_init(struct drm_device *dev, int sdvox_reg) drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs); + intel_hdmi_add_properties(intel_hdmi, connector); + intel_connector_attach_encoder(intel_connector, intel_encoder); drm_sysfs_connector_add(connector); |