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drm/i915/vbt: Parse and use the new field with PSR2 TP2/3 wakeup time

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A new field with the training pattern(TP) wakeup time for PSR2 was
added to VBT, so lets use it when available otherwise it will
fallback to PSR1 wakeup time.

v2: replacing enum to numerical usec time (Jani)

BSpec: 20131

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190312195743.8829-1-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2019-03-12 12:57:41 -07:00
parent c6c30b917d
commit 88a0d9606a
4 changed files with 33 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1012,6 +1012,7 @@ struct intel_vbt_data {
enum psr_lines_to_wait lines_to_wait;
int tp1_wakeup_time_us;
int tp2_tp3_wakeup_time_us;
int psr2_tp2_tp3_wakeup_time_us;
} psr;
struct {

25
drivers/gpu/drm/i915/intel_bios.c
View File

@ -760,6 +760,31 @@ parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
dev_priv->vbt.psr.tp1_wakeup_time_us = psr_table->tp1_wakeup_time * 100;
dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = psr_table->tp2_tp3_wakeup_time * 100;
}
if (bdb->version >= 226) {
u32 wakeup_time = psr_table->psr2_tp2_tp3_wakeup_time;
wakeup_time = (wakeup_time >> (2 * panel_type)) & 0x3;
switch (wakeup_time) {
case 0:
wakeup_time = 500;
break;
case 1:
wakeup_time = 100;
break;
case 3:
wakeup_time = 50;
break;
default:
case 2:
wakeup_time = 2500;
break;
}
dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us = wakeup_time;
} else {
/* Reusing PSR1 wakeup time for PSR2 in older VBTs */
dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us = dev_priv->vbt.psr.tp2_tp3_wakeup_time_us;
}
}
static void parse_dsi_backlight_ports(struct drm_i915_private *dev_priv,

8
drivers/gpu/drm/i915/intel_psr.c
View File

@ -509,12 +509,12 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp)
val |= EDP_PSR2_FRAME_BEFORE_SU(dev_priv->psr.sink_sync_latency + 1);
if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us >= 0 &&
dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 50)
if (dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us >= 0 &&
dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 50)
val |= EDP_PSR2_TP2_TIME_50us;
else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 100)
else if (dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 100)
val |= EDP_PSR2_TP2_TIME_100us;
else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 500)
else if (dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 500)
val |= EDP_PSR2_TP2_TIME_500us;
else
val |= EDP_PSR2_TP2_TIME_2500us;

3
drivers/gpu/drm/i915/intel_vbt_defs.h
View File

@ -772,6 +772,9 @@ struct psr_table {
/* TP wake up time in multiple of 100 */
u16 tp1_wakeup_time;
u16 tp2_tp3_wakeup_time;
/* PSR2 TP2/TP3 wakeup time for 16 panels */
u32 psr2_tp2_tp3_wakeup_time;
} __packed;
struct bdb_psr {