From: Deepak M <m.deepak@xxxxxxxxx>
For dual link panel scenarios there are new fields added in the
VBT which indicate on which port the PWM cntrl and CABC ON/OFF
commands needs to be sent.
v2: Moving the comment to intel_dsi.h(Jani)
v3: Renaming the field names (Jani)
v4 by Jani: make this patch only about VBT
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Yetunde Adebisi <yetundex.adebisi@xxxxxxxxx>
Signed-off-by: Deepak M <m.deepak@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_bios.c | 10 ++++++++++
drivers/gpu/drm/i915/intel_bios.h | 8 +++++++-
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 9c406b0f4173..6985519921b4 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -746,6 +746,16 @@ parse_mipi_config(struct drm_i915_private *dev_priv,
return;
}
+ /*
+ * These fields are introduced from the VBT version 197 onwards,
+ * so making sure that these bits are set zero in the previous
+ * versions.
+ */
+ if (dev_priv->vbt.dsi.config->dual_link && bdb->version < 197) {
+ dev_priv->vbt.dsi.config->dl_dcs_cabc_ports = 0;
+ dev_priv->vbt.dsi.config->dl_dcs_backlight_ports = 0;
+ }
+
/* We have mandatory mipi config blocks. Initialize as generic panel */
dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID;
}
diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h
index ab0ea315eddb..149c3226e895 100644
--- a/drivers/gpu/drm/i915/intel_bios.h
+++ b/drivers/gpu/drm/i915/intel_bios.h
@@ -113,7 +113,13 @@ struct mipi_config {
u16 dual_link:2;
u16 lane_cnt:2;
u16 pixel_overlap:3;
- u16 rsvd3:9;
+ u16 rgb_flip:1;
+#define DL_DCS_PORT_A 0x00
+#define DL_DCS_PORT_C 0x01
+#define DL_DCS_PORT_A_AND_C 0x02
+ u16 dl_dcs_cabc_ports:2;
+ u16 dl_dcs_backlight_ports:2;
+ u16 rsvd3:4;
u16 rsvd4;
--
2.1.4
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