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| author | Shashank Sharma <shashank.sharma@intel.com> | 2014-08-22 17:40:43 +0530 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-04-14 14:53:04 +0200 |
| commit | 9e63743ebbcb138be83453f7dcf65f817893f851 (patch) | |
| tree | af8a83ed11b313af7d886d5cb6100939be2ca0ba /drivers/gpu/drm/i915/i915_irq.c | |
| parent | 266ea3d9c4f69a4d97533128aba494f7d8b52459 (diff) | |
| download | lwn-9e63743ebbcb138be83453f7dcf65f817893f851.tar.gz lwn-9e63743ebbcb138be83453f7dcf65f817893f851.zip | |
drm/i915/bxt: Enable GMBUS IRQ
GMBUS interrupt has been moved to CPU side in BXT.
What this patch does is:
1. Enable GMBUS IRQ in de_post_install function
2. Handle this interrupt as a port interrupt in display irq
handler
v2: Rebase on top of the for_each_pipe() change adding dev_priv as
first argument (Damien).
v3: read BXT_DE_PORT_GMBUS IIR flag only on BXT on other platforms
it's reserved (imre)
v4: (jani)
- remove redundant 'BXT GMBUS' comment
- fix formatting of BXT_DE_PORT_GMBUS definition
Reviewed-by: Satheeshakrishna M <satheeshakrishna.m@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Shashank Sharma <shashank.sharma@intel.com> (v1)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 17a8f8c61753..f776584ce363 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2244,6 +2244,11 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg) found = true; } + if (IS_BROXTON(dev) && (tmp & BXT_DE_PORT_GMBUS)) { + gmbus_irq_handler(dev); + found = true; + } + if (!found) DRM_ERROR("Unexpected DE Port interrupt\n"); } @@ -3515,13 +3520,16 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv) uint32_t de_pipe_masked = GEN8_PIPE_CDCLK_CRC_DONE; uint32_t de_pipe_enables; int pipe; - u32 aux_en = GEN8_AUX_CHANNEL_A; + u32 de_port_en = GEN8_AUX_CHANNEL_A; if (IS_GEN9(dev_priv)) { de_pipe_masked |= GEN9_PIPE_PLANE1_FLIP_DONE | GEN9_DE_PIPE_IRQ_FAULT_ERRORS; - aux_en |= GEN9_AUX_CHANNEL_B | GEN9_AUX_CHANNEL_C | + de_port_en |= GEN9_AUX_CHANNEL_B | GEN9_AUX_CHANNEL_C | GEN9_AUX_CHANNEL_D; + + if (IS_BROXTON(dev_priv)) + de_port_en |= BXT_DE_PORT_GMBUS; } else de_pipe_masked |= GEN8_PIPE_PRIMARY_FLIP_DONE | GEN8_DE_PIPE_IRQ_FAULT_ERRORS; @@ -3540,7 +3548,7 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv) dev_priv->de_irq_mask[pipe], de_pipe_enables); - GEN5_IRQ_INIT(GEN8_DE_PORT_, ~aux_en, aux_en); + GEN5_IRQ_INIT(GEN8_DE_PORT_, ~de_port_en, de_port_en); } static int gen8_irq_postinstall(struct drm_device *dev) |