From 7d99163da69e04ccae0b52093f716167ed71d66d Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Tue, 28 May 2013 19:22:25 -0700 Subject: [PATCH] drm/i915: Create an ivybridge_irq_preinstall Just duplicates ironlake_irq_preinstall for now. v2: Add new PCH_NOP check (Damien) Add SDEIMR comment (Damien) Signed-off-by: Ben Widawsky Reviewed-by: Damien Lespiau [danvet: Update now outdated comment.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_irq.c | 35 +++++++++++++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 0f052f90f39a..5d5bb8ce0fb4 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2491,6 +2491,37 @@ static void ironlake_irq_preinstall(struct drm_device *dev) I915_WRITE(GTIER, 0x0); POSTING_READ(GTIER); + /* south display irq */ + I915_WRITE(SDEIMR, 0xffffffff); + /* + * SDEIER is also touched by the interrupt handler to work around missed + * PCH interrupts. Hence we can't update it after the interrupt handler + * is enabled - instead we unconditionally enable all PCH interrupt + * sources here, but then only unmask them as needed with SDEIMR. + */ + I915_WRITE(SDEIER, 0xffffffff); + POSTING_READ(SDEIER); +} + +static void ivybridge_irq_preinstall(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + + atomic_set(&dev_priv->irq_received, 0); + + I915_WRITE(HWSTAM, 0xeffe); + + /* XXX hotplug from PCH */ + + I915_WRITE(DEIMR, 0xffffffff); + I915_WRITE(DEIER, 0x0); + POSTING_READ(DEIER); + + /* and GT */ + I915_WRITE(GTIMR, 0xffffffff); + I915_WRITE(GTIER, 0x0); + POSTING_READ(GTIER); + if (HAS_PCH_NOP(dev)) return; @@ -3494,9 +3525,9 @@ void intel_irq_init(struct drm_device *dev) dev->driver->disable_vblank = valleyview_disable_vblank; dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) { - /* Share pre & uninstall handlers with ILK/SNB */ + /* Share uninstall handlers with ILK/SNB */ dev->driver->irq_handler = ivybridge_irq_handler; - dev->driver->irq_preinstall = ironlake_irq_preinstall; + dev->driver->irq_preinstall = ivybridge_irq_preinstall; dev->driver->irq_postinstall = ivybridge_irq_postinstall; dev->driver->irq_uninstall = ironlake_irq_uninstall; dev->driver->enable_vblank = ivybridge_enable_vblank; -- 2.30.2