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drm/i915/debugfs: add a separate debugfs file for VBT

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In the future the VBT might not be in mailbox #4 of the ACPI OpRegion,
thus unavailable in i915_opregion, so add a separate file for the VBT.

v2: Drop the locking as unneeded (Chris)
v3: Rebase

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450178232-27780-1-git-send-email-jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2015-12-15 13:17:12 +02:00
parent 2455a8e43d
commit ada8f95598
3 changed files with 16 additions and 0 deletions
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14
drivers/gpu/drm/i915/i915_debugfs.c
View File

@ -1857,6 +1857,19 @@ out:
return 0;
}
static int i915_vbt(struct seq_file *m, void *unused)
{
struct drm_info_node *node = m->private;
struct drm_device *dev = node->minor->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_opregion *opregion = &dev_priv->opregion;
if (opregion->vbt)
seq_write(m, opregion->vbt, opregion->vbt_size);
return 0;
}
static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
{
struct drm_info_node *node = m->private;
@ -5325,6 +5338,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
{"i915_ips_status", i915_ips_status, 0},
{"i915_sr_status", i915_sr_status, 0},
{"i915_opregion", i915_opregion, 0},
{"i915_vbt", i915_vbt, 0},
{"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
{"i915_context_status", i915_context_status, 0},
{"i915_dump_lrc", i915_dump_lrc, 0},

1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -458,6 +458,7 @@ struct intel_opregion {
u32 swsci_sbcb_sub_functions;
struct opregion_asle *asle;
const void *vbt;
u32 vbt_size;
u32 *lid_state;
struct work_struct asle_work;
};

1
drivers/gpu/drm/i915/intel_opregion.c
View File

@ -993,6 +993,7 @@ int intel_opregion_setup(struct drm_device *dev)
if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion\n");
opregion->vbt = vbt;
opregion->vbt_size = vbt_size;
}
}