Op 18-07-17 om 14:49 schreef Mahesh Kumar:
> From: "Kumar, Mahesh" <mahesh1.ku...@intel.com>
> This patch adds IPC support. This patch also enables IPC in all supported
> platforms based on has_ipc flag.
> IPC (Isochronous Priority Control) is the hardware feature, which
> dynamically controls the memory read priority of Display.
> When IPC is enabled, plane read requests are sent at high priority until
> filling above the transition watermark, then the requests are sent at
> lower priority until dropping below the level 0 watermark.
> The lower priority requests allow other memory clients to have better
> memory access. When IPC is disabled, all plane read requests are sent at
> high priority.
> Changes since V1:
> - Remove commandline parameter to disable ipc
> - Address Paulo's comments
> Changes since V2:
> - Address review comments
> - Set ipc_enabled flag
> Changes since V3:
> - move ipc_enabled flag assignment inside intel_ipc_enable function
> Changes since V4:
> - Re-enable IPC after suspend/resume
> Changes since V5:
> - Enable IPC for all gen >=9 except SKL
> Changes since V6:
> - fix commit msg
> - after resume program IPC based on SW state.
> Changes since V7:
> - Modify IPC support check based on HAS_IPC macro (suggested by Chris)
Much better, for all patches without comments..
Reviewed-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
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