On Thu, 22 Sep 2011 11:15:58 +0530, Jesse Barnes <[email protected]>
wrote:
> Read link status first, followed by the full DPCD receiver cap field
> rather than just the first 8 bytes.
>
> Signed-off-by: Jesse Barnes <[email protected]>
> ---
> drivers/gpu/drm/i915/i915_irq.c | 2 ++
> drivers/gpu/drm/i915/intel_dp.c | 4 ++--
> 2 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 02f96fd..80b49cc 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -530,6 +530,7 @@ static irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS)
> if (pch_iir & SDE_HOTPLUG_MASK_CPT)
> queue_work(dev_priv->wq, &dev_priv->hotplug_work);
> pch_irq_handler(dev);
> + I915_WRITE(PCH_PORT_HOTPLUG, I915_READ(PCH_PORT_HOTPLUG));
> }
>
> if (pm_iir & GEN6_PM_DEFERRED_EVENTS) {
> @@ -629,6 +630,7 @@ static irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS)
> if (pch_iir & hotplug_mask)
> queue_work(dev_priv->wq, &dev_priv->hotplug_work);
> pch_irq_handler(dev);
> + I915_WRITE(PCH_PORT_HOTPLUG, I915_READ(PCH_PORT_HOTPLUG));
> }
This is a seperate chunk to the commit message.
>
> if (de_iir & DE_PCU_EVENT) {
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 0feae90..01848f9 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -36,7 +36,7 @@
> #include "i915_drv.h"
> #include "drm_dp_helper.h"
>
> -
> +#define DP_RECEIVER_CAP_SIZE 0xf
> #define DP_LINK_STATUS_SIZE 6
> #define DP_LINK_CHECK_TIMEOUT (10 * 1000)
>
> @@ -53,7 +53,7 @@ struct intel_dp {
> int dpms_mode;
> uint8_t link_bw;
> uint8_t lane_count;
> - uint8_t dpcd[8];
> + uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
> struct i2c_adapter adapter;
> struct i2c_algo_dp_aux_data algo;
> bool is_pch_edp;
So I'm not seeing the quick check followed by the full read as
described.
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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