From: Damien Lespiau Date: Mon, 4 Aug 2014 21:01:33 +0000 (+0100) Subject: drm/i915: Iterate through the initialized DDIs to prepare their buffers X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b403745c84592b26a0713e6944c2b109f6df5c82;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git drm/i915: Iterate through the initialized DDIs to prepare their buffers Not every DDIs is necessarily connected can be strapped off and, in the future, we'll have platforms with a different number of default DDI ports. So, let's only call intel_prepare_ddi_buffers() on DDI ports that are actually detected. We also use the opportunity to give a struct intel_digital_port to intel_prepare_ddi_buffers() as we'll need it in a following patch to query if the port supports HMDI or not. On my HSW machine this removes the initialization of a couple of (unused) DDIs. Signed-off-by: Damien Lespiau Reviewed-by: Sivakumar Thulasimani Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index a7049ea164e2..fd72f3f0cf84 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -251,6 +251,10 @@ enum hpd_pin { &dev->mode_config.connector_list, \ base.head) +#define for_each_digital_port(dev, digital_port) \ + list_for_each_entry(digital_port, \ + &dev->mode_config.encoder_list, \ + base.base.head) #define for_each_encoder_on_crtc(dev, __crtc, intel_encoder) \ list_for_each_entry((intel_encoder), &(dev)->mode_config.encoder_list, base.head) \ diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index f9f55bc05e7d..e0b618851a53 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -198,10 +198,12 @@ enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder) * in either FDI or DP modes only, as HDMI connections will work with both * of those */ -static void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port) +static void intel_prepare_ddi_buffers(struct drm_device *dev, + struct intel_digital_port *intel_dig_port) { struct drm_i915_private *dev_priv = dev->dev_private; u32 reg; + int port = intel_dig_port->port; int i, n_hdmi_entries, n_dp_entries, n_edp_entries, hdmi_default_entry, size; int hdmi_level = dev_priv->vbt.ddi_port_info[port].hdmi_level_shift; @@ -309,13 +311,19 @@ static void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port) */ void intel_prepare_ddi(struct drm_device *dev) { - int port; + struct intel_digital_port *intel_dig_port; + bool visited[I915_MAX_PORTS] = { 0, }; if (!HAS_DDI(dev)) return; - for (port = PORT_A; port <= PORT_E; port++) - intel_prepare_ddi_buffers(dev, port); + for_each_digital_port(dev, intel_dig_port) { + if (visited[intel_dig_port->port]) + continue; + + intel_prepare_ddi_buffers(dev, intel_dig_port); + visited[intel_dig_port->port] = true; + } } static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,