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drm/i915: Extract intel_wm_plane_visible() 

All platforms that lack double buffered watermarks will need to
handle the legacy cursor updates in the same way. So let's extract the
logic to determine the plane visibility into a small helper. For
simplicity we'll make the function DTRT for any plane, but only apply
the special sauce for cursor planes.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170314151050.12194-1-ville.syrjala@linux.intel.com
Tested-by: Dorota Czaplejewicz <dorota.czaplejewicz@collabora.co.uk>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
This commit is contained in:
Ville Syrjälä 2017-03-14 17:10:49 +02:00
parent 24f8e00a8a
commit 24304d8193
1 changed files with 27 additions and 12 deletions
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39
drivers/gpu/drm/i915/intel_pm.c
View File

@ -655,6 +655,29 @@ static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
return wm_size;
}
static bool intel_wm_plane_visible(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
/* FIXME check the 'enable' instead */
if (!crtc_state->base.active)
return false;
/*
* Treat cursor with fb as always visible since cursor updates
* can happen faster than the vrefresh rate, and the current
* watermark code doesn't handle that correctly. Cursor updates
* which set/clear the fb or change the cursor size are going
* to get throttled by intel_legacy_cursor_update() to work
* around this problem with the watermark code.
*/
if (plane->id == PLANE_CURSOR)
return plane_state->base.fb != NULL;
else
return plane_state->base.visible;
}
static struct intel_crtc *single_enabled_crtc(struct drm_i915_private *dev_priv)
{
struct intel_crtc *crtc, *enabled = NULL;
@ -1961,7 +1984,7 @@ static uint32_t ilk_compute_pri_wm(const struct intel_crtc_state *cstate,
uint32_t method1, method2;
int cpp;
if (!cstate->base.active || !pstate->base.visible)
if (!intel_wm_plane_visible(cstate, pstate))
return 0;
cpp = pstate->base.fb->format->cpp[0];
@ -1990,7 +2013,7 @@ static uint32_t ilk_compute_spr_wm(const struct intel_crtc_state *cstate,
uint32_t method1, method2;
int cpp;
if (!cstate->base.active || !pstate->base.visible)
if (!intel_wm_plane_visible(cstate, pstate))
return 0;
cpp = pstate->base.fb->format->cpp[0];
@ -2013,15 +2036,7 @@ static uint32_t ilk_compute_cur_wm(const struct intel_crtc_state *cstate,
{
int cpp;
/*
* Treat cursor with fb as always visible since cursor updates
* can happen faster than the vrefresh rate, and the current
* watermark code doesn't handle that correctly. Cursor updates
* which set/clear the fb or change the cursor size are going
* to get throttled by intel_legacy_cursor_update() to work
* around this problem with the watermark code.
*/
if (!cstate->base.active || !pstate->base.fb)
if (!intel_wm_plane_visible(cstate, pstate))
return 0;
cpp = pstate->base.fb->format->cpp[0];
@ -2038,7 +2053,7 @@ static uint32_t ilk_compute_fbc_wm(const struct intel_crtc_state *cstate,
{
int cpp;
if (!cstate->base.active || !pstate->base.visible)
if (!intel_wm_plane_visible(cstate, pstate))
return 0;
cpp = pstate->base.fb->format->cpp[0];