From 7d148ef51a657fd04036c3ed7803da600dd0d451 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Mon, 22 Jul 2013 18:02:39 +0200 Subject: [PATCH 1/2] drm/i915: fix hdmi portclock limits In commit 325b9d048810f7689ec644595061c0b700e64bce Author: Daniel Vetter Date: Fri Apr 19 11:24:33 2013 +0200 drm/i915: fixup 12bpc hdmi dotclock handling I've errornously claimed that we don't yet support the hdmi 1.4 dotclocks > 225 MHz on Haswell. But a bug report and a closer look at the wrpll table showed that we've supported port clocks up to 300MHz. With the new code to dynamically compute wrpll limits we should have no issues going up to the full 340 MHz range of hdmi 1.4, so let's just use that to fix this regression. That'll allow 4k over hdmi for free! v2: Drop the random hunk that somehow slipped in. v3: Cantiga has the original HDMI dotclock limit of 165MHz. And also patch up the mode filtering. To do so extract the dotclock limits into a little helper function. v4: Use 300MHz (from Bspec) instead of 340MHz (upper limit for hdmi 1.3), apparently hw is not required to be able to drive the highest dotclocks. Suggested by Damien. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=67048 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=67030 Tested-by: Andreas Reis (v2) Cc: Damien Lespiau Reviewed-by: Damien Lespiau Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_hdmi.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 98df2a0c85bd..2fd3fd5b943e 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -785,10 +785,22 @@ static void intel_disable_hdmi(struct intel_encoder *encoder) } } +static int hdmi_portclock_limit(struct intel_hdmi *hdmi) +{ + struct drm_device *dev = intel_hdmi_to_dev(hdmi); + + if (IS_G4X(dev)) + return 165000; + else if (IS_HASWELL(dev)) + return 300000; + else + return 225000; +} + static int intel_hdmi_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { - if (mode->clock > 165000) + if (mode->clock > hdmi_portclock_limit(intel_attached_hdmi(connector))) return MODE_CLOCK_HIGH; if (mode->clock < 20000) return MODE_CLOCK_LOW; @@ -806,6 +818,7 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder, struct drm_device *dev = encoder->base.dev; struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; int clock_12bpc = pipe_config->requested_mode.clock * 3 / 2; + int portclock_limit = hdmi_portclock_limit(intel_hdmi); int desired_bpp; if (intel_hdmi->color_range_auto) { @@ -829,7 +842,7 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder, * outputs. We also need to check that the higher clock still fits * within limits. */ - if (pipe_config->pipe_bpp > 8*3 && clock_12bpc <= 225000 + if (pipe_config->pipe_bpp > 8*3 && clock_12bpc <= portclock_limit && HAS_PCH_SPLIT(dev)) { DRM_DEBUG_KMS("picking bpc to 12 for HDMI output\n"); desired_bpp = 12*3; @@ -846,7 +859,7 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder, pipe_config->pipe_bpp = desired_bpp; } - if (adjusted_mode->clock > 225000) { + if (adjusted_mode->clock > portclock_limit) { DRM_DEBUG_KMS("too high HDMI clock, rejecting mode\n"); return false; } From 14c5cec5d0cd73e7e9d4fbea2bbfeea8f3ade871 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Thu, 25 Jul 2013 12:44:34 +0300 Subject: [PATCH 2/2] drm/i915: initialize gt_lock early with other spin locks commit 181d1b9e31c668259d3798c521672afb8edd355c Author: Daniel Vetter Date: Sun Jul 21 13:16:24 2013 +0200 drm/i915: fix up gt init sequence fallout moved dev_priv->gt_lock initialization after use. Do the initialization much earlier with other spin lock initializations. Reported-by: Sedat Dilek Signed-off-by: Jani Nikula Tested-by: Sedat Dilek Cc: stable@vger.kernel.org (since the regressing patch is also cc: stable) Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_dma.c | 1 + drivers/gpu/drm/i915/intel_pm.c | 2 -- 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 67ec54f67afe..b1520682cb23 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1498,6 +1498,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) spin_lock_init(&dev_priv->irq_lock); spin_lock_init(&dev_priv->gpu_error.lock); spin_lock_init(&dev_priv->rps.lock); + spin_lock_init(&dev_priv->gt_lock); spin_lock_init(&dev_priv->backlight.lock); mutex_init(&dev_priv->dpio_lock); mutex_init(&dev_priv->rps.hw_lock); diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 6a347f54d39f..51a2a60f5bfc 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5497,8 +5497,6 @@ void intel_gt_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - spin_lock_init(&dev_priv->gt_lock); - if (IS_VALLEYVIEW(dev)) { dev_priv->gt.force_wake_get = vlv_force_wake_get; dev_priv->gt.force_wake_put = vlv_force_wake_put;