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Commit 1e0c05c0 authored by José Roberto de Souza's avatar José Roberto de Souza
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drm/i915/psr: Move logic to get TPS registers values to another function 



This will make hsw_activate_psr1() more easy to read and will make
future modification to TPS registers more easy to review and read.

v4: Rename new function to intel_psr1_get_tp_time() (Dhinakaran and
Rodrigo)

Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: default avatarJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190312195743.8829-2-jose.souza@intel.com
parent 88a0d960

drivers/gpu/drm/i915/intel_psr.c

+33 −24
Original line number Diff line number Diff line
@@ -434,30 +434,10 @@ static void intel_psr_enable_sink(struct intel_dp *intel_dp) 
	drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);

}



static void hsw_activate_psr1(struct intel_dp *intel_dp)

static u32 intel_psr1_get_tp_time(struct intel_dp *intel_dp)

{

	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);

	u32 max_sleep_time = 0x1f;

	u32 val = EDP_PSR_ENABLE;



	/* Let's use 6 as the minimum to cover all known cases including the

	 * off-by-one issue that HW has in some cases.

	 */

	int idle_frames = max(6, dev_priv->vbt.psr.idle_frames);



	/* sink_sync_latency of 8 means source has to wait for more than 8

	 * frames, we'll go with 9 frames for now

	 */

	idle_frames = max(idle_frames, dev_priv->psr.sink_sync_latency + 1);



	val |= idle_frames << EDP_PSR_IDLE_FRAME_SHIFT;



	val |= max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT;

	if (IS_HASWELL(dev_priv))

		val |= EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES;



	if (dev_priv->psr.link_standby)

		val |= EDP_PSR_LINK_STANDBY;

	u32 val = 0;



	if (dev_priv->vbt.psr.tp1_wakeup_time_us == 0)

		val |= EDP_PSR_TP1_TIME_0us;
@@ -483,6 +463,35 @@ static void hsw_activate_psr1(struct intel_dp *intel_dp) 
	else

		val |= EDP_PSR_TP1_TP2_SEL;



	return val;

}



static void hsw_activate_psr1(struct intel_dp *intel_dp)

{

	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);

	u32 max_sleep_time = 0x1f;

	u32 val = EDP_PSR_ENABLE;



	/* Let's use 6 as the minimum to cover all known cases including the

	 * off-by-one issue that HW has in some cases.

	 */

	int idle_frames = max(6, dev_priv->vbt.psr.idle_frames);



	/* sink_sync_latency of 8 means source has to wait for more than 8

	 * frames, we'll go with 9 frames for now

	 */

	idle_frames = max(idle_frames, dev_priv->psr.sink_sync_latency + 1);

	val |= idle_frames << EDP_PSR_IDLE_FRAME_SHIFT;



	val |= max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT;

	if (IS_HASWELL(dev_priv))

		val |= EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES;



	if (dev_priv->psr.link_standby)

		val |= EDP_PSR_LINK_STANDBY;



	val |= intel_psr1_get_tp_time(intel_dp);



	if (INTEL_GEN(dev_priv) >= 8)

		val |= EDP_PSR_CRC_ENABLE;