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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
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25
drivers/gpu/drm/i915/intel_bios.c
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@@ -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,