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drm/i915/dp: Refactor pipe_bpp limits with dsc

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With DSC there are additional limits for pipe_bpp. Currently these are
scattered in different places.
Instead set the limits->pipe.max/min_bpp in one place and use them
wherever required.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241217093244.3938132-10-ankit.k.nautiyal@intel.com
This commit is contained in:
Ankit Nautiyal
2024-12-17 15:02:39 +05:30
parent ad784c9787
commit 21ebc319fe
1 changed files with 24 additions and 25 deletions
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49
drivers/gpu/drm/i915/display/intel_dp.c
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@@ -2193,20 +2193,11 @@ int intel_dp_dsc_min_src_input_bpc(void)
}
static
bool is_dsc_pipe_bpp_sufficient(struct intel_display *display,
struct link_config_limits *limits,
bool is_dsc_pipe_bpp_sufficient(struct link_config_limits *limits,
int pipe_bpp)
{
int dsc_max_bpc, dsc_min_bpc, dsc_max_pipe_bpp, dsc_min_pipe_bpp;
dsc_max_bpc = intel_dp_dsc_max_src_input_bpc(display);
dsc_min_bpc = intel_dp_dsc_min_src_input_bpc();
dsc_max_pipe_bpp = min(dsc_max_bpc * 3, limits->pipe.max_bpp);
dsc_min_pipe_bpp = max(dsc_min_bpc * 3, limits->pipe.min_bpp);
return pipe_bpp >= dsc_min_pipe_bpp &&
pipe_bpp <= dsc_max_pipe_bpp;
return pipe_bpp >= limits->pipe.min_bpp &&
pipe_bpp <= limits->pipe.max_bpp;
}
static
@@ -2221,7 +2212,7 @@ int intel_dp_force_dsc_pipe_bpp(struct intel_dp *intel_dp,
forced_bpp = intel_dp->force_dsc_bpc * 3;
if (is_dsc_pipe_bpp_sufficient(display, limits, forced_bpp)) {
if (is_dsc_pipe_bpp_sufficient(limits, forced_bpp)) {
drm_dbg_kms(display->drm, "Input DSC BPC forced to %d\n",
intel_dp->force_dsc_bpc);
return forced_bpp;
@@ -2240,11 +2231,10 @@ static int intel_dp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp,
struct link_config_limits *limits,
int timeslots)
{
struct intel_display *display = to_intel_display(intel_dp);
const struct intel_connector *connector =
to_intel_connector(conn_state->connector);
int dsc_max_bpc, dsc_max_bpp;
int dsc_min_bpc, dsc_min_bpp;
int dsc_max_bpp;
int dsc_min_bpp;
u8 dsc_bpc[3] = {};
int forced_bpp, pipe_bpp;
int num_bpc, i, ret;
@@ -2260,14 +2250,8 @@ static int intel_dp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp,
}
}
dsc_max_bpc = intel_dp_dsc_max_src_input_bpc(display);
if (!dsc_max_bpc)
return -EINVAL;
dsc_max_bpp = min(dsc_max_bpc * 3, limits->pipe.max_bpp);
dsc_min_bpc = intel_dp_dsc_min_src_input_bpc();
dsc_min_bpp = max(dsc_min_bpc * 3, limits->pipe.min_bpp);
dsc_max_bpp = limits->pipe.max_bpp;
dsc_min_bpp = limits->pipe.min_bpp;
/*
* Get the maximum DSC bpc that will be supported by any valid
@@ -2312,7 +2296,7 @@ static int intel_edp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp,
/* For eDP use max bpp that can be supported with DSC. */
pipe_bpp = intel_dp_dsc_compute_max_bpp(connector, max_bpc);
if (!is_dsc_pipe_bpp_sufficient(display, limits, pipe_bpp)) {
if (!is_dsc_pipe_bpp_sufficient(limits, pipe_bpp)) {
drm_dbg_kms(display->drm,
"Computed BPC is not in DSC BPC limits\n");
return -EINVAL;
@@ -2518,6 +2502,18 @@ intel_dp_compute_config_link_bpp_limits(struct intel_dp *intel_dp,
return true;
}
static void
intel_dp_dsc_compute_pipe_bpp_limits(struct intel_dp *intel_dp,
struct link_config_limits *limits)
{
struct intel_display *display = to_intel_display(intel_dp);
int dsc_min_bpc = intel_dp_dsc_min_src_input_bpc();
int dsc_max_bpc = intel_dp_dsc_max_src_input_bpc(display);
limits->pipe.max_bpp = min(limits->pipe.max_bpp, dsc_max_bpc * 3);
limits->pipe.min_bpp = max(limits->pipe.min_bpp, dsc_min_bpc * 3);
}
bool
intel_dp_compute_config_limits(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state,
@@ -2554,6 +2550,9 @@ intel_dp_compute_config_limits(struct intel_dp *intel_dp,
respect_downstream_limits);
}
if (dsc)
intel_dp_dsc_compute_pipe_bpp_limits(intel_dp, limits);
if (is_mst || intel_dp->use_max_params) {
/*
* For MST we always configure max link bw - the spec doesn't