On Thu, May 03, 2018 at 05:06:09PM +0530, vathsala nagaraju wrote:
> From: Vathsala Nagaraju <vathsala.nagaraju@xxxxxxxxx>
>
> For psr block #9, the vbt description has moved to options [0-3] for
> TP1,TP2,TP3 Wakeup time from decimal value without any change to vbt
> structure. Since spec does not mention from which VBT version this
> change was added to vbt.bsf file, we cannot depend on bdb->version check
> to change for all the platforms.
>
> There is RCR inplace for GOP team to provide the version number
> to make generic change. Since Kabylake with bdb version 209 is having this
> change, limiting this change to kbl and version 209+ to unblock google.
>
> Tested on skl(bdb version 203,without options) and
> kabylake(bdb version 209,212) having new options.
>
> bspec 20131
>
> v2: (Jani and Rodrigo)
> move the 165 version check to intel_bios.c
> v3: Jani
> Move the abstraction to intel_bios.
> v4: Jani
> Rename tp*_wakeup_time to have "us" suffix.
> For values outside range[0-3],default to max 2500us.
> Old decimal value was wake up time in multiples of 100us.
> v5: Jani and Rodrigo
> Handle option 2 in default condition.
> Print oustide range value.
> For negetive values default to 2500us.
> v6: Jani
> Handle default first and then fall through for case 2.
>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> CC: Puthikorn Voravootivat <puthik@xxxxxxxxxxxx>
>
> Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@xxxxxxxxx>
> Signed-off-by: Vathsala Nagaraju <vathsala.nagaraju@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_drv.h | 4 ++--
> drivers/gpu/drm/i915/i915_reg.h | 8 +++----
> drivers/gpu/drm/i915/intel_bios.c | 46 +++++++++++++++++++++++++++++++++++++--
> drivers/gpu/drm/i915/intel_psr.c | 39 +++++++++++++++++----------------
> 4 files changed, 70 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 6268a51..a189382 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -1077,8 +1077,8 @@ struct intel_vbt_data {
> bool require_aux_wakeup;
> int idle_frames;
> enum psr_lines_to_wait lines_to_wait;
> - int tp1_wakeup_time;
> - int tp2_tp3_wakeup_time;
> + int tp1_wakeup_time_us;
> + int tp2_tp3_wakeup_time_us;
> } psr;
>
> struct {
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 197c966..6bbd0b4 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -4084,10 +4084,10 @@ enum {
> #define EDP_Y_COORDINATE_ENABLE (1<<25) /* GLK and CNL+ */
> #define EDP_MAX_SU_DISABLE_TIME(t) ((t)<<20)
> #define EDP_MAX_SU_DISABLE_TIME_MASK (0x1f<<20)
> -#define EDP_PSR2_TP2_TIME_500 (0<<8)
> -#define EDP_PSR2_TP2_TIME_100 (1<<8)
> -#define EDP_PSR2_TP2_TIME_2500 (2<<8)
> -#define EDP_PSR2_TP2_TIME_50 (3<<8)
> +#define EDP_PSR2_TP2_TIME_500us (0<<8)
> +#define EDP_PSR2_TP2_TIME_100us (1<<8)
> +#define EDP_PSR2_TP2_TIME_2500us (2<<8)
> +#define EDP_PSR2_TP2_TIME_50us (3<<8)
> #define EDP_PSR2_TP2_TIME_MASK (3<<8)
> #define EDP_PSR2_FRAME_BEFORE_SU_SHIFT 4
> #define EDP_PSR2_FRAME_BEFORE_SU_MASK (0xf<<4)
> diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
> index 702d3fa..166f704 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -687,8 +687,50 @@ static int intel_bios_ssc_frequency(struct drm_i915_private *dev_priv,
> break;
> }
>
> - dev_priv->vbt.psr.tp1_wakeup_time = psr_table->tp1_wakeup_time;
> - dev_priv->vbt.psr.tp2_tp3_wakeup_time = psr_table->tp2_tp3_wakeup_time;
> + /*
> + * New psr options 0=500us, 1=100us, 2=2500us, 3=0us
> + * Old decimal value is wake up time in multiples of 100 us.
> + */
> + if (bdb->version >= 209 && IS_KABYLAKE(dev_priv)) {
Please file a BSpec bug and get that mess cleaned up first before spreading it here.
I'm looking to the same 20131 and it says "wake up time in multiples of 100" and VBT version 165
Ok, I also see on 20131 the mention to:
"
0 = 500 usec
1 = 100 usec
2 = 2.5 msec
3 = 0 usec (Skip TP1)
"
But it has absolutely no mention to "209" or "Kabylake" or any other platform.
I doubt that it would be for Kabylake and not for Coffelake for instance.
Thanks,
Rodrigo.
> + switch (psr_table->tp1_wakeup_time) {
> + case 0:
> + dev_priv->vbt.psr.tp1_wakeup_time_us = 500;
> + break;
> + case 1:
> + dev_priv->vbt.psr.tp1_wakeup_time_us = 100;
> + break;
> + case 3:
> + dev_priv->vbt.psr.tp1_wakeup_time_us = 0;
> + break;
> + default:
> + DRM_DEBUG_KMS("VBT tp1 wakeup time value %d is outside range[0-3], defaulting to max value 2500us\n",
> + psr_table->tp1_wakeup_time);
> + case 2:
> + dev_priv->vbt.psr.tp1_wakeup_time_us = 2500;
> + break;
> + }
> +
> + switch (psr_table->tp2_tp3_wakeup_time) {
> + case 0:
> + dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 500;
> + break;
> + case 1:
> + dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 100;
> + break;
> + case 3:
> + dev_priv->vbt.psr.tp1_wakeup_time_us = 0;
> + break;
> + default:
> + DRM_DEBUG_KMS("VBT tp2_tp3 wakeup time value %d is outside range[0-3], \
> + defaulting to max value 2500us\n", psr_table->tp2_tp3_wakeup_time);
> + case 2:
> + dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 2500;
> + break;
> + }
> + } else {
> + 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;
> + }
> }
>
> static void parse_dsi_backlight_ports(struct drm_i915_private *dev_priv,
> diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
> index 6233a32..f03dfba 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -461,23 +461,23 @@ static void hsw_activate_psr1(struct intel_dp *intel_dp)
> if (dev_priv->psr.link_standby)
> val |= EDP_PSR_LINK_STANDBY;
>
> - if (dev_priv->vbt.psr.tp1_wakeup_time > 5)
> - val |= EDP_PSR_TP1_TIME_2500us;
> - else if (dev_priv->vbt.psr.tp1_wakeup_time > 1)
> - val |= EDP_PSR_TP1_TIME_500us;
> - else if (dev_priv->vbt.psr.tp1_wakeup_time > 0)
> + if (dev_priv->vbt.psr.tp1_wakeup_time_us == 0)
> + val |= EDP_PSR_TP1_TIME_0us;
> + else if (dev_priv->vbt.psr.tp1_wakeup_time_us <= 100)
> val |= EDP_PSR_TP1_TIME_100us;
> + else if (dev_priv->vbt.psr.tp1_wakeup_time_us <= 500)
> + val |= EDP_PSR_TP1_TIME_500us;
> else
> - val |= EDP_PSR_TP1_TIME_0us;
> + val |= EDP_PSR_TP1_TIME_2500us;
>
> - if (dev_priv->vbt.psr.tp2_tp3_wakeup_time > 5)
> - val |= EDP_PSR_TP2_TP3_TIME_2500us;
> - else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time > 1)
> - val |= EDP_PSR_TP2_TP3_TIME_500us;
> - else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time > 0)
> + if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us == 0)
> + val |= EDP_PSR_TP2_TP3_TIME_0us;
> + else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 100)
> val |= EDP_PSR_TP2_TP3_TIME_100us;
> + else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 500)
> + val |= EDP_PSR_TP2_TP3_TIME_500us;
> else
> - val |= EDP_PSR_TP2_TP3_TIME_0us;
> + val |= EDP_PSR_TP2_TP3_TIME_2500us;
>
> if (intel_dp_source_supports_hbr2(intel_dp) &&
> drm_dp_tps3_supported(intel_dp->dpcd))
> @@ -513,14 +513,15 @@ 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 > 5)
> - val |= EDP_PSR2_TP2_TIME_2500;
> - else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time > 1)
> - val |= EDP_PSR2_TP2_TIME_500;
> - else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time > 0)
> - val |= EDP_PSR2_TP2_TIME_100;
> + if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us >= 0 &&
> + dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 50)
> + val |= EDP_PSR2_TP2_TIME_50us;
> + else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 100)
> + val |= EDP_PSR2_TP2_TIME_100us;
> + else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 500)
> + val |= EDP_PSR2_TP2_TIME_500us;
> else
> - val |= EDP_PSR2_TP2_TIME_50;
> + val |= EDP_PSR2_TP2_TIME_2500us;
>
> I915_WRITE(EDP_PSR2_CTL, val);
> }
> --
> 1.9.1
>
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