diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-01-05 12:01:24 -0800 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-01-11 20:43:58 +0000 |
| commit | 88271da3f3da75d6eaef5e768c82a1627edf7088 (patch) | |
| tree | be417b97f6252786dd0366592d05d1fc0cb8a939 /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | 0dc79fb2a36efcadbb39bd8b28933d8aa40408b1 (diff) | |
| download | talos-op-linux-88271da3f3da75d6eaef5e768c82a1627edf7088.tar.gz talos-op-linux-88271da3f3da75d6eaef5e768c82a1627edf7088.zip | |
drm/i915: re-enable rc6 support for Ironlake+
Re-enable rc6 support on Ironlake for power savings. Adds a debugfs
file to check current RC state, adds a missing workaround for Ironlake
MI_SET_CONTEXT instructions, and renames MCHBAR_RENDER_STANDBY to
RSTDBYCTL to match the docs.
Keep RC6 and the power context disabled on pre-ILK. It only seems to
hang and doesn't save any power.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 7243d6418651..9c4cdc143be9 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -896,7 +896,7 @@ static int i915_drpc_info(struct seq_file *m, void *unused) struct drm_device *dev = node->minor->dev; drm_i915_private_t *dev_priv = dev->dev_private; u32 rgvmodectl = I915_READ(MEMMODECTL); - u32 rstdbyctl = I915_READ(MCHBAR_RENDER_STANDBY); + u32 rstdbyctl = I915_READ(RSTDBYCTL); u16 crstandvid = I915_READ16(CRSTANDVID); seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ? @@ -919,6 +919,30 @@ static int i915_drpc_info(struct seq_file *m, void *unused) seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f)); seq_printf(m, "Render standby enabled: %s\n", (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes"); + seq_printf(m, "Current RS state: "); + switch (rstdbyctl & RSX_STATUS_MASK) { + case RSX_STATUS_ON: + seq_printf(m, "on\n"); + break; + case RSX_STATUS_RC1: + seq_printf(m, "RC1\n"); + break; + case RSX_STATUS_RC1E: + seq_printf(m, "RC1E\n"); + break; + case RSX_STATUS_RS1: + seq_printf(m, "RS1\n"); + break; + case RSX_STATUS_RS2: + seq_printf(m, "RS2 (RC6)\n"); + break; + case RSX_STATUS_RS3: + seq_printf(m, "RC3 (RC6+)\n"); + break; + default: + seq_printf(m, "unknown\n"); + break; + } return 0; } |
