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 gen9_bc 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.
v7: Rodrigo
Apply this change for IS_GEN9_BC and vbt version > 209.
v8: Puthik
add new function vbt_psr_to_us.
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Puthikorn Voravootivat <puthik@xxxxxxxxxxxx>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
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 | 38 ++++++++++++++++++++++++++++++++++++--
drivers/gpu/drm/i915/intel_psr.c | 39 ++++++++++++++++++++-------------------
4 files changed, 62 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index e33c380..dcfa791 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1078,8 +1078,8 @@ 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 196a0eb..513b4a4 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4088,10 +4088,10 @@ 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 54270bd..5d8c29f 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -647,12 +647,26 @@ static int intel_bios_ssc_frequency(struct drm_i915_private *dev_priv,
}
}
+static int vbt_psr_to_us(bool is_waketime_options, int vbt_value)
+{
+ if (is_waketime_options) {
+ int waketime_map[] = {500, 100, 2500, 0};
+ /* Reset to value 2 = 2500us for outside range [0-3] */
+ if (vbt_value < 0 || vbt_value > 3)
+ vbt_value = 2;
+ return waketime_map[vbt_value];
+ } else {
+ return vbt_value * 100;
+ }
+}
+
static void
parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
{
const struct bdb_psr *psr;
const struct psr_table *psr_table;
int panel_type = dev_priv->vbt.panel_type;
+ bool is_waketime_options = false;
psr = find_section(bdb, BDB_PSR);
if (!psr) {
@@ -688,8 +702,28 @@ 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 wake options 0=500us, 1=100us, 2=2500us, 3=0us
+ * Old decimal value is wake up time in multiples of 100 us.
+ * TODO: add other platforms having new psr options.
+ */
+ is_waketime_options = ((bdb->version >= 209) && IS_GEN9_BC(dev_priv));
+ if (is_waketime_options) {
+ /* Reset to value 2 = 2500us for outside range [0-3] */
+ if (psr_table->tp1_wakeup_time < 0 ||
+ psr_table->tp1_wakeup_time > 3) {
+ 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);
+ }
+ if (psr_table->tp2_tp3_wakeup_time < 0 ||
+ psr_table->tp2_tp3_wakeup_time > 3) {
+ 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);
+ }
+ }
