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author | Dave Airlie <airlied@redhat.com> | 2013-04-22 18:48:45 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2013-04-22 18:48:45 +1000 |
commit | f0aa848fe5f2ed2599b7d54a6d3719d9df0a0965 (patch) | |
tree | e5a762cab2108dd6c2dad6ffeabc5d4203e85859 /drivers/gpu/drm/i915/intel_pm.c | |
parent | e1adc78caf440d3f6be81a947c2b913e73514a68 (diff) | |
parent | bd080ee57c2173cefdcadc39c7863a76c249d049 (diff) | |
download | blackbird-obmc-linux-f0aa848fe5f2ed2599b7d54a6d3719d9df0a0965.tar.gz blackbird-obmc-linux-f0aa848fe5f2ed2599b7d54a6d3719d9df0a0965.zip |
Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-next
Daniel writes:
As promised a stash of (mostly) fixes. Two pieces of non-fixes included:
- A notch more gtt refactoring from Ben, beating to death with igt in our
nightly testing.
- Support for display display-less server chips (again from Ben). New hw
support which is only likely to break itself ;-)
Otherwise just tons of fixes:
- hpd irq storm mitigation from Egbert Eich. Your -next tree already has
the infrastructure, this here just supplies the logic.
- sdvo hw state check fix from Egbert Eich
- fb cb tune settings for the pch pll clocks on cpt/ppt
- "Bring a bigger gun" coherence workaround for multi-threade, mulit-core
& thrashing tiled gtt cpu access from Chris.
- Update haswell mPHY code.
- l3$ caching for context objects on ivb/hsw (Chris).
- dp aux refclock fix for haswell (Jani)
- moar overclocking fixes for snb/ivb (Ben)
- ecobits ppgtt pte caching control fixes from Ville
- fence stride check fixes and limit improvements (Ville)
- fix up crtc force restoring, potentially resulting in tons of hw state
check WARNs
- OOPS fix for NULL derefencing of fb pointers when force-restoring a crtc
when other crtcs are disabled and the force-restored crtc is _not_ the
first one.
- Fix pfit disabling on gen2/3.
- Haswell ring freq scaling fixes (Chris).
- backlight init/teardown fix (failed eDP init killed the lvds backlight)
from Jani
- cpt/ppt fdi polarity fixes from Paulo (should help a lot of the FDI link
train failures).
- And a bunch of smaller things all over.
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: (56 commits)
drm/i915: fix bpc vs. bpp confusion in intel_crtc_compute_config
drm/i915: move cpu_transcoder to the pipe configuration
drm/i915: preserve the PBC bits of TRANS_CHICKEN2
drm/i915: set CPT FDI RX polarity bits based on VBT
drm/i915: Add Reenable Timer to turn Hotplug Detection back on (v4)
drm/i915: Disable HPD interrupt on pin when irq storm is detected (v3)
drm/i915: Mask out the HPD irq bits before setting them individually.
drm/i915: (re)init HPD interrupt storm statistics
drm/i915: Add HPD IRQ storm detection (v5)
drm/i915: WARN when LPT-LP is not paired with ULT CPU
drm/i915: don't intel_crt_init on any ULT machines
drm/i915: remove comment about IVB link training from intel_pm.c
drm/i915: VLV doesn't have LLC
drm/i915: Scale ring, rather than ia, frequency on Haswell
drm/i915: shorten debugfs output simple attributes
drm/i915: Fixup pfit disabling for gen2/3
drm/i915: Fixup Oops in the pipe config computation
drm/i915: ensure single initialization and cleanup of backlight device
drm/i915: don't touch the PF regs if the power well is down
drm/i915: add intel_using_power_well
...
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 85 |
1 files changed, 63 insertions, 22 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 13a0666a53b4..e34ad9642519 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2558,8 +2558,8 @@ static void gen6_enable_rps(struct drm_device *dev) rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS); - /* In units of 100MHz */ - dev_priv->rps.max_delay = rp_state_cap & 0xff; + /* In units of 50MHz */ + dev_priv->rps.hw_max = dev_priv->rps.max_delay = rp_state_cap & 0xff; dev_priv->rps.min_delay = (rp_state_cap & 0xff0000) >> 16; dev_priv->rps.cur_delay = 0; @@ -2643,10 +2643,10 @@ static void gen6_enable_rps(struct drm_device *dev) pcu_mbox = 0; ret = sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, &pcu_mbox); if (!ret && (pcu_mbox & (1<<31))) { /* OC supported */ - DRM_DEBUG_DRIVER("overclocking supported, adjusting frequency max from %dMHz to %dMHz\n", + DRM_DEBUG_DRIVER("Overclocking supported. Max: %dMHz, Overclock max: %dMHz\n", (dev_priv->rps.max_delay & 0xff) * 50, (pcu_mbox & 0xff) * 50); - dev_priv->rps.max_delay = pcu_mbox & 0xff; + dev_priv->rps.hw_max = pcu_mbox & 0xff; } } else { DRM_DEBUG_DRIVER("Failed to set the min frequency\n"); @@ -2684,8 +2684,8 @@ static void gen6_update_ring_freq(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; int min_freq = 15; - int gpu_freq; - unsigned int ia_freq, max_ia_freq; + unsigned int gpu_freq; + unsigned int max_ia_freq, min_ring_freq; int scaling_factor = 180; WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); @@ -2701,6 +2701,10 @@ static void gen6_update_ring_freq(struct drm_device *dev) /* Convert from kHz to MHz */ max_ia_freq /= 1000; + min_ring_freq = I915_READ(MCHBAR_MIRROR_BASE_SNB + DCLK); + /* convert DDR frequency from units of 133.3MHz to bandwidth */ + min_ring_freq = (2 * 4 * min_ring_freq + 2) / 3; + /* * For each potential GPU frequency, load a ring frequency we'd like * to use for memory access. We do this by specifying the IA frequency @@ -2709,21 +2713,32 @@ static void gen6_update_ring_freq(struct drm_device *dev) for (gpu_freq = dev_priv->rps.max_delay; gpu_freq >= dev_priv->rps.min_delay; gpu_freq--) { int diff = dev_priv->rps.max_delay - gpu_freq; - - /* - * For GPU frequencies less than 750MHz, just use the lowest - * ring freq. - */ - if (gpu_freq < min_freq) - ia_freq = 800; - else - ia_freq = max_ia_freq - ((diff * scaling_factor) / 2); - ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100); - ia_freq <<= GEN6_PCODE_FREQ_IA_RATIO_SHIFT; + unsigned int ia_freq = 0, ring_freq = 0; + + if (IS_HASWELL(dev)) { + ring_freq = (gpu_freq * 5 + 3) / 4; + ring_freq = max(min_ring_freq, ring_freq); + /* leave ia_freq as the default, chosen by cpufreq */ + } else { + /* On older processors, there is no separate ring + * clock domain, so in order to boost the bandwidth + * of the ring, we need to upclock the CPU (ia_freq). + * + * For GPU frequencies less than 750MHz, + * just use the lowest ring freq. + */ + if (gpu_freq < min_freq) + ia_freq = 800; + else + ia_freq = max_ia_freq - ((diff * scaling_factor) / 2); + ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100); + } sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_MIN_FREQ_TABLE, - ia_freq | gpu_freq); + ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT | + ring_freq << GEN6_PCODE_FREQ_RING_RATIO_SHIFT | + gpu_freq); } } @@ -3575,6 +3590,7 @@ static void cpt_init_clock_gating(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; int pipe; + uint32_t val; /* * On Ibex Peak and Cougar Point, we need to disable clock @@ -3587,8 +3603,17 @@ static void cpt_init_clock_gating(struct drm_device *dev) /* The below fixes the weird display corruption, a few pixels shifted * downward, on (only) LVDS of some HP laptops with IVY. */ - for_each_pipe(pipe) - I915_WRITE(TRANS_CHICKEN2(pipe), TRANS_CHICKEN2_TIMING_OVERRIDE); + for_each_pipe(pipe) { + val = I915_READ(TRANS_CHICKEN2(pipe)); + val |= TRANS_CHICKEN2_TIMING_OVERRIDE; + val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED; + if (dev_priv->fdi_rx_polarity_inverted) + val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED; + val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK; + val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER; + val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH; + I915_WRITE(TRANS_CHICKEN2(pipe), val); + } /* WADP0ClockGatingDisable */ for_each_pipe(pipe) { I915_WRITE(TRANS_CHICKEN1(pipe), @@ -3890,7 +3915,8 @@ static void ivybridge_init_clock_gating(struct drm_device *dev) snpcr |= GEN6_MBC_SNPCR_MED; I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr); - cpt_init_clock_gating(dev); + if (!HAS_PCH_NOP(dev)) + cpt_init_clock_gating(dev); gen6_check_mch_setup(dev); } @@ -4084,6 +4110,22 @@ void intel_init_clock_gating(struct drm_device *dev) dev_priv->display.init_clock_gating(dev); } +/** + * We should only use the power well if we explicitly asked the hardware to + * enable it, so check if it's enabled and also check if we've requested it to + * be enabled. + */ +bool intel_using_power_well(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + if (IS_HASWELL(dev)) + return I915_READ(HSW_PWR_WELL_DRIVER) == + (HSW_PWR_WELL_ENABLE | HSW_PWR_WELL_STATE); + else + return true; +} + void intel_set_power_well(struct drm_device *dev, bool enable) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -4190,7 +4232,6 @@ void intel_init_pm(struct drm_device *dev) } dev_priv->display.init_clock_gating = gen6_init_clock_gating; } else if (IS_IVYBRIDGE(dev)) { - /* FIXME: detect B0+ stepping and use auto training */ if (SNB_READ_WM0_LATENCY()) { dev_priv->display.update_wm = ivybridge_update_wm; dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm; |