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| author |   José Roberto de Souza <jose.souza@intel.com> | 2019-03-12 12:57:41 -0700 |
|---|---|---|
| committer | José Roberto de Souza <jose.souza@intel.com> | 2019-03-13 14:20:19 -0700 |
| commit | 88a0d9606aff09d2b1c5dbe95a9df9dac44e79b6 (patch) | |
| tree | 2cce749791862b074b0230c0e5d24f96457dfaf1 /drivers/gpu/drm/i915/intel_bios.c | |
| parent | drm/i915: Start using comparative INTEL_PCH_TYPE (diff) | |
| download | linux-dev-88a0d9606aff09d2b1c5dbe95a9df9dac44e79b6.tar.xz linux-dev-88a0d9606aff09d2b1c5dbe95a9df9dac44e79b6.zip | |
drm/i915/vbt: Parse and use the new field with PSR2 TP2/3 wakeup time
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
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 936415e0c395..64f20175a6dc 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -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, |