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| author |   Jesse Barnes <jbarnes@virtuousgeek.org> | 2010-02-05 12:42:41 -0800 |
|---|---|---|
| committer |   Eric Anholt <eric@anholt.net> | 2010-02-22 11:46:57 -0500 |
| commit | b5e50c3f56ee4aa0d0168eab5ece413ac5df76aa (patch) | |
| tree | eb6ee1777dc52a00d3981e4a7a208bbe6a136263 /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | drm/i915: fix drps disable so unload & re-load works (diff) | |
| download | linux-dev-b5e50c3f56ee4aa0d0168eab5ece413ac5df76aa.tar.xz linux-dev-b5e50c3f56ee4aa0d0168eab5ece413ac5df76aa.zip | |
drm/i915: provide FBC status in debugfs
Tools like powertop want to check the current FBC status and report it
to the user. So add a debugfs file indicating whether FBC is enabled,
and if not, why.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 55340de618ea..96e8b9b2cb32 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -477,6 +477,54 @@ static int i915_drpc_info(struct seq_file *m, void *unused) return 0; } +static int i915_fbc_status(struct seq_file *m, void *unused) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_device *dev = node->minor->dev; + struct drm_crtc *crtc; + drm_i915_private_t *dev_priv = dev->dev_private; + bool fbc_enabled = false; + + if (!dev_priv->display.fbc_enabled) { + seq_printf(m, "FBC unsupported on this chipset\n"); + return 0; + } + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + if (!crtc->enabled) + continue; + if (dev_priv->display.fbc_enabled(crtc)) + fbc_enabled = true; + } + + if (fbc_enabled) { + seq_printf(m, "FBC enabled\n"); + } else { + seq_printf(m, "FBC disabled: "); + switch (dev_priv->no_fbc_reason) { + case FBC_STOLEN_TOO_SMALL: + seq_printf(m, "not enough stolen memory"); + break; + case FBC_UNSUPPORTED_MODE: + seq_printf(m, "mode not supported"); + break; + case FBC_MODE_TOO_LARGE: + seq_printf(m, "mode too large"); + break; + case FBC_BAD_PLANE: + seq_printf(m, "FBC unsupported on plane"); + break; + case FBC_NOT_TILED: + seq_printf(m, "scanout buffer not tiled"); + break; + default: + seq_printf(m, "unknown reason"); + } + seq_printf(m, "\n"); + } + return 0; +} + static int i915_wedged_open(struct inode *inode, struct file *filp) @@ -599,6 +647,7 @@ static struct drm_info_list i915_debugfs_list[] = { {"i915_delayfreq_table", i915_delayfreq_table, 0}, {"i915_inttoext_table", i915_inttoext_table, 0}, {"i915_drpc_info", i915_drpc_info, 0}, + {"i915_fbc_status", i915_fbc_status, 0}, }; #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list) |