On Wed, Jan 27, 2016 at 09:40:01PM +0530, Shobhit Kumar wrote:
> From: "Kumar, Mahesh" <mahesh1.ku...@intel.com>
>
> if downscaling is enabled plane data rate increases according to scaling
> amount. take scaling amount under consideration while calculating plane
> data rate
>
> v2: Address Matt's comments, where data rate was overridden because of
> missing else.
>
> Cc: matthew.d.ro...@intel.com
> Signed-off-by: Kumar, Mahesh <mahesh1.ku...@intel.com>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 17 ++++++++++++-----
> 1 file changed, 12 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 40fff09..a9f9396 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -2912,6 +2912,8 @@ skl_plane_relative_data_rate(const struct
> intel_crtc_state *cstate,
> {
> struct intel_plane_state *intel_pstate = to_intel_plane_state(pstate);
> struct drm_framebuffer *fb = pstate->fb;
> + struct intel_plane *intel_plane = to_intel_plane(pstate->plane);
> + uint32_t down_scale_amount, data_rate;
> uint32_t width = 0, height = 0;
>
> width = drm_rect_width(&intel_pstate->src) >> 16;
> @@ -2923,15 +2925,20 @@ skl_plane_relative_data_rate(const struct
> intel_crtc_state *cstate,
> /* for planar format */
> if (fb->pixel_format == DRM_FORMAT_NV12) {
> if (y) /* y-plane data rate */
> - return width * height *
> + data_rate = width * height *
> drm_format_plane_cpp(fb->pixel_format, 0);
> else /* uv-plane data rate */
> - return (width / 2) * (height / 2) *
> + data_rate = (width / 2) * (height / 2) *
> drm_format_plane_cpp(fb->pixel_format, 1);
> - }
> + } else
> + /* for packed formats */
> + data_rate = width * height *
> + drm_format_plane_cpp(fb->pixel_format, 0);
According to the coding style, I believe we're supposed to use braces
for both branches if either one of them needs braces.
Aside from that,
Reviewed-by: Matt Roper <matthew.d.ro...@intel.com>
> +
> + down_scale_amount = skl_plane_downscale_amount(intel_plane);
> +
> + return DIV_ROUND_UP((data_rate * down_scale_amount), 1000);
>
> - /* for packed formats */
> - return width * height * drm_format_plane_cpp(fb->pixel_format, 0);
> }
>
> /*
> --
> 2.5.0
>
--
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795
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