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drm/i915/display/adl_p: Allow DC3CO in pipe and port B 

DC3CO is allowed in all the combinations between pipe and port A and B
on alderlake-P.

BSpec: 49196
Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Matt Atwood <matthew.s.atwood@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210524214805.259692-4-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2021-05-24 14:48:04 -07:00
parent b554065cb6
commit 95f7f7d34b
1 changed files with 16 additions and 4 deletions
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20
drivers/gpu/drm/i915/display/intel_psr.c
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@ -646,12 +646,26 @@ static void tgl_disallow_dc3co_on_psr2_exit(struct intel_dp *intel_dp)
tgl_psr2_disable_dc3co(intel_dp);
}
static bool
dc3co_is_pipe_port_compatible(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state)
{
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe;
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
enum port port = dig_port->base.port;
if (IS_ALDERLAKE_P(dev_priv))
return pipe <= PIPE_B && port <= PORT_B;
else
return pipe == PIPE_A && port == PORT_A;
}
static void
tgl_dc3co_exitline_compute_config(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state)
{
const u32 crtc_vdisplay = crtc_state->uapi.adjusted_mode.crtc_vdisplay;
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
u32 exit_scanlines;
@ -672,9 +686,7 @@ tgl_dc3co_exitline_compute_config(struct intel_dp *intel_dp,
if (!(dev_priv->dmc.allowed_dc_mask & DC_STATE_EN_DC3CO))
return;
/* B.Specs:49196 DC3CO only works with pipeA and DDIA.*/
if (to_intel_crtc(crtc_state->uapi.crtc)->pipe != PIPE_A ||
dig_port->base.port != PORT_A)
if (!dc3co_is_pipe_port_compatible(intel_dp, crtc_state))
return;
/*