[Intel-gfx] [PATCH 4/8] drm/i915/glk: IPC linetime watermark workaround for GLK

2017-08-17 Thread Mahesh Kumar
From: "Kumar, Mahesh" IF IPC is enabled LINETIME_WM value should be half of calculated value line time = ROUNDDOWN(1/2 * Calculated Line Time) Earlier code was rounding-up the value, But updated Bspec says we should take the ROUNDDOWN. This patch corrects that as well. Signed-off-by: Mahesh Ku

[Intel-gfx] [PATCH 4/8] drm/i915/glk: IPC linetime watermark workaround for GLK

2017-07-18 Thread Mahesh Kumar
From: "Kumar, Mahesh" IF IPC is enabled LINETIME_WM value should be half of calculated value line time = ROUNDDOWN(1/2 * Calculated Line Time) Earlier code was rounding-up the value, But updated Bspec says we should take the ROUNDDOWN. This patch corrects that as well. Signed-off-by: Mahesh Ku