drm/i915: Introduce a for_each_intel_encoder() macro

Following the established idom, let's provide a macro to iterate through
the encoders.

spatch helps, once more, for the substitution:

  @@
  iterator name list_for_each_entry;
  iterator name for_each_intel_encoder;
  struct intel_encoder * encoder;
  struct drm_device * dev;
  @@
  -list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
  +for_each_intel_encoder(dev, encoder) {
    ...
  }

I also modified a few call sites by hand where a pointer to mode_config
was directly used (to avoid overflowing 80 chars).

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Wrap paramters correctly in the macro and remove spurious
space checkpatch noticed.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

6 files changed, 31 insertions, 49 deletions

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index aea1a819c775..330caa1ab9f9 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2708,8 +2708,7 @@ static int i9xx_pipe_crc_auto_source(struct drm_device *dev, enum pipe pipe,
         *source = INTEL_PIPE_CRC_SOURCE_PIPE;
 
         drm_modeset_lock_all(dev);
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 if (!encoder->base.crtc)
                         continue;
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 0d7e55f2a8a2..73d2308e2377 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -171,6 +171,11 @@ enum hpd_pin {
 #define for_each_intel_crtc(dev, intel_crtc) \
         list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list, base.head)
 
+#define for_each_intel_encoder(dev, intel_encoder)              \
+        list_for_each_entry(intel_encoder,                      \
+                            &(dev)->mode_config.encoder_list,   \
+                            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) \
                 if ((intel_encoder)->base.crtc == (__crtc))
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 379cfb5dc731..87abe8679495 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3522,18 +3522,17 @@ static void cherryview_irq_preinstall(struct drm_device *dev)
 static void ibx_hpd_irq_setup(struct drm_device *dev)
 {
         struct drm_i915_private *dev_priv = dev->dev_private;
-        struct drm_mode_config *mode_config = &dev->mode_config;
         struct intel_encoder *intel_encoder;
         u32 hotplug_irqs, hotplug, enabled_irqs = 0;
 
         if (HAS_PCH_IBX(dev)) {
                 hotplug_irqs = SDE_HOTPLUG_MASK;
-                list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head)
+                for_each_intel_encoder(dev, intel_encoder)
                         if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED)
                                 enabled_irqs |= hpd_ibx[intel_encoder->hpd_pin];
         } else {
                 hotplug_irqs = SDE_HOTPLUG_MASK_CPT;
-                list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head)
+                for_each_intel_encoder(dev, intel_encoder)
                         if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED)
                                 enabled_irqs |= hpd_cpt[intel_encoder->hpd_pin];
         }
@@ -4452,7 +4451,6 @@ static int i965_irq_postinstall(struct drm_device *dev)
 static void i915_hpd_irq_setup(struct drm_device *dev)
 {
         struct drm_i915_private *dev_priv = dev->dev_private;
-        struct drm_mode_config *mode_config = &dev->mode_config;
         struct intel_encoder *intel_encoder;
         u32 hotplug_en;
 
@@ -4463,7 +4461,7 @@ static void i915_hpd_irq_setup(struct drm_device *dev)
                 hotplug_en &= ~HOTPLUG_INT_EN_MASK;
                 /* Note HDMI and DP share hotplug bits */
                 /* enable bits are the same for all generations */
-                list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head)
+                for_each_intel_encoder(dev, intel_encoder)
                         if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED)
                                 hotplug_en |= hpd_mask_i915[intel_encoder->hpd_pin];
                 /* Programming the CRT detection parameters tends
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 60ba6962026b..f32a94544940 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6405,7 +6405,6 @@ static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
 static void ironlake_init_pch_refclk(struct drm_device *dev)
 {
         struct drm_i915_private *dev_priv = dev->dev_private;
-        struct drm_mode_config *mode_config = &dev->mode_config;
         struct intel_encoder *encoder;
         u32 val, final;
         bool has_lvds = false;
@@ -6415,8 +6414,7 @@ static void ironlake_init_pch_refclk(struct drm_device *dev)
         bool can_ssc = false;
 
         /* We need to take the global config into account */
-        list_for_each_entry(encoder, &mode_config->encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 switch (encoder->type) {
                 case INTEL_OUTPUT_LVDS:
                         has_panel = true;
@@ -6723,11 +6721,10 @@ static void lpt_disable_clkout_dp(struct drm_device *dev)
 
 static void lpt_init_pch_refclk(struct drm_device *dev)
 {
-        struct drm_mode_config *mode_config = &dev->mode_config;
         struct intel_encoder *encoder;
         bool has_vga = false;
 
-        list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 switch (encoder->type) {
                 case INTEL_OUTPUT_ANALOG:
                         has_vga = true;
@@ -9902,8 +9899,7 @@ static void intel_modeset_update_staged_output_state(struct drm_device *dev)
                         to_intel_encoder(connector->base.encoder);
         }
 
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 encoder->new_crtc =
                         to_intel_crtc(encoder->base.crtc);
         }
@@ -9934,8 +9930,7 @@ static void intel_modeset_commit_output_state(struct drm_device *dev)
                 connector->base.encoder = &connector->new_encoder->base;
         }
 
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 encoder->base.crtc = &encoder->new_crtc->base;
         }
 
@@ -10105,8 +10100,7 @@ static bool check_single_encoder_cloning(struct intel_crtc *crtc,
         struct drm_device *dev = crtc->base.dev;
         struct intel_encoder *source_encoder;
 
-        list_for_each_entry(source_encoder,
-                            &dev->mode_config.encoder_list, base.head) {
+        for_each_intel_encoder(dev, source_encoder) {
                 if (source_encoder->new_crtc != crtc)
                         continue;
 
@@ -10122,8 +10116,7 @@ static bool check_encoder_cloning(struct intel_crtc *crtc)
         struct drm_device *dev = crtc->base.dev;
         struct intel_encoder *encoder;
 
-        list_for_each_entry(encoder,
-                            &dev->mode_config.encoder_list, base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 if (encoder->new_crtc != crtc)
                         continue;
 
@@ -10207,8 +10200,7 @@ encoder_retry:
          * adjust it according to limitations or connector properties, and also
          * a chance to reject the mode entirely.
          */
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
 
                 if (&encoder->new_crtc->base != crtc)
                         continue;
@@ -10286,8 +10278,7 @@ intel_modeset_affected_pipes(struct drm_crtc *crtc, unsigned *modeset_pipes,
                                 1 << connector->new_encoder->new_crtc->pipe;
         }
 
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 if (encoder->base.crtc == &encoder->new_crtc->base)
                         continue;
 
@@ -10361,8 +10352,7 @@ intel_modeset_update_state(struct drm_device *dev, unsigned prepare_pipes)
         struct intel_crtc *intel_crtc;
         struct drm_connector *connector;
 
-        list_for_each_entry(intel_encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, intel_encoder) {
                 if (!intel_encoder->base.crtc)
                         continue;
 
@@ -10636,8 +10626,7 @@ check_encoder_state(struct drm_device *dev)
         struct intel_encoder *encoder;
         struct intel_connector *connector;
 
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 bool enabled = false;
                 bool active = false;
                 enum pipe pipe, tracked_pipe;
@@ -10716,8 +10705,7 @@ check_crtc_state(struct drm_device *dev)
                 WARN(crtc->active && !crtc->base.enabled,
                      "active crtc, but not enabled in sw tracking\n");
 
-                list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                                    base.head) {
+                for_each_intel_encoder(dev, encoder) {
                         if (encoder->base.crtc != &crtc->base)
                                 continue;
                         enabled = true;
@@ -10739,8 +10727,7 @@ check_crtc_state(struct drm_device *dev)
                 if (crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE)
                         active = crtc->active;
 
-                list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                                    base.head) {
+                for_each_intel_encoder(dev, encoder) {
                         enum pipe pipe;
                         if (encoder->base.crtc != &crtc->base)
                                 continue;
@@ -11108,7 +11095,7 @@ static void intel_set_config_restore_state(struct drm_device *dev,
         }
 
         count = 0;
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 encoder->new_crtc =
                         to_intel_crtc(config->save_encoder_crtcs[count++]);
         }
@@ -11267,8 +11254,7 @@ intel_modeset_stage_output_state(struct drm_device *dev,
         }
 
         /* Check for any encoders that needs to be disabled. */
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 int num_connectors = 0;
                 list_for_each_entry(connector,
                                     &dev->mode_config.connector_list,
@@ -11301,9 +11287,7 @@ intel_modeset_stage_output_state(struct drm_device *dev,
         for_each_intel_crtc(dev, crtc) {
                 crtc->new_enabled = false;
 
-                list_for_each_entry(encoder,
-                                    &dev->mode_config.encoder_list,
-                                    base.head) {
+                for_each_intel_encoder(dev, encoder) {
                         if (encoder->new_crtc == crtc) {
                                 crtc->new_enabled = true;
                                 break;
@@ -11340,7 +11324,7 @@ static void disable_crtc_nofb(struct intel_crtc *crtc)
                         connector->new_encoder = NULL;
         }
 
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 if (encoder->new_crtc == crtc)
                         encoder->new_crtc = NULL;
         }
@@ -11972,8 +11956,7 @@ static int intel_encoder_clones(struct intel_encoder *encoder)
         int index_mask = 0;
         int entry = 0;
 
-        list_for_each_entry(source_encoder,
-                            &dev->mode_config.encoder_list, base.head) {
+        for_each_intel_encoder(dev, source_encoder) {
                 if (encoders_cloneable(encoder, source_encoder))
                         index_mask |= (1 << entry);
 
@@ -12162,7 +12145,7 @@ static void intel_setup_outputs(struct drm_device *dev)
 
         intel_edp_psr_init(dev);
 
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 encoder->base.possible_crtcs = encoder->crtc_mask;
                 encoder->base.possible_clones =
                         intel_encoder_clones(encoder);
@@ -13056,8 +13039,7 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev)
                         intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
         }
 
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 pipe = 0;
 
                 if (encoder->get_hw_state(encoder, &pipe)) {
@@ -13121,8 +13103,7 @@ void intel_modeset_setup_hw_state(struct drm_device *dev,
         }
 
         /* HW state is read out, now we need to sanitize this mess. */
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 intel_sanitize_encoder(encoder);
         }
 
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 5f47d359a991..9169786dbbc3 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -885,7 +885,7 @@ static bool hdmi_12bpc_possible(struct intel_crtc *crtc)
         if (HAS_GMCH_DISPLAY(dev))
                 return false;
 
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 if (encoder->new_crtc != crtc)
                         continue;
 
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 881361c0f27e..1987491723a5 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -823,8 +823,7 @@ bool intel_is_dual_link_lvds(struct drm_device *dev)
         struct intel_encoder *encoder;
         struct intel_lvds_encoder *lvds_encoder;
 
-        list_for_each_entry(encoder, &dev->mode_config.encoder_list,
-                            base.head) {
+        for_each_intel_encoder(dev, encoder) {
                 if (encoder->type == INTEL_OUTPUT_LVDS) {
                         lvds_encoder = to_lvds_encoder(&encoder->base);