drm/i915: dump the device info

Handy for lazy people like me, or when people forget to add the output
of lspci -nn.

v2: Chris Wilson noticed that we have this duplicated already in the
i915_capabilites debugfs file. But there \n as separator looks better,
which would be a bit verbose in dmesg. Abuse the preprocessor to
extract this all.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 17 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index d57ea1672134..a7a213cf06fb 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1428,6 +1428,21 @@ static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
         kfree(ap);
 }
 
+static void i915_dump_device_info(struct drm_i915_private *dev_priv)
+{
+        const struct intel_device_info *info = dev_priv->info;
+
+#define DEV_INFO_FLAG(name) info->name ? #name "," : ""
+#define DEV_INFO_SEP ,
+        DRM_DEBUG_DRIVER("i915 device info: gen=%i, pciid=0x%04x flags="
+                         "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+                         info->gen,
+                         dev_priv->dev->pdev->device,
+                         DEV_INFO_FLAGS);
+#undef DEV_INFO_FLAG
+#undef DEV_INFO_SEP
+}
+
 /**
  * i915_driver_load - setup chip and create an initial config
  * @dev: DRM device
@@ -1452,7 +1467,6 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
         if (info->gen >= 6 && !drm_core_check_feature(dev, DRIVER_MODESET))
                 return -ENODEV;
 
-
         /* i915 has 4 more counters */
         dev->counters += 4;
         dev->types[6] = _DRM_STAT_IRQ;
@@ -1468,6 +1482,8 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
         dev_priv->dev = dev;
         dev_priv->info = info;
 
+        i915_dump_device_info(dev_priv);
+
         if (i915_get_bridge_dev(dev)) {
                 ret = -EIO;
                 goto free_priv;