From: Madhav Chauhan <madhav.chau...@intel.com>
This patch disables both DSI ports by writing to
DDI_BUF_CTL registers as part of DSI encoder disable
sequence.
Signed-off-by: Madhav Chauhan <madhav.chau...@intel.com>
Reviewed-by: Jani Nikula <jani.nik...@intel.com>
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
drivers/gpu/drm/i915/icl_dsi.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
index 71092f116170..44696848ffd7 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -853,6 +853,26 @@ static void gen11_dsi_deconfigure_trancoder(struct
intel_encoder *encoder)
}
}
+static void gen11_dsi_disable_port(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+ u32 tmp;
+ enum port port;
+
+ for_each_dsi_port(port, intel_dsi->ports) {
+ tmp = I915_READ(DDI_BUF_CTL(port));
+ tmp &= ~DDI_BUF_CTL_ENABLE;
+ I915_WRITE(DDI_BUF_CTL(port), tmp);
+
+ if (wait_for_us((I915_READ(DDI_BUF_CTL(port)) &
+ DDI_BUF_IS_IDLE),
+ 8))
+ DRM_ERROR("DDI port:%c buffer not idle\n",
+ port_name(port));
+ }
+}
+
static void __attribute__((unused)) gen11_dsi_disable(
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
@@ -872,4 +892,7 @@ static void __attribute__((unused)) gen11_dsi_disable(
/* step2h,i,j: deconfig trancoder */
gen11_dsi_deconfigure_trancoder(encoder);
+
+ /* step3: disable port */
+ gen11_dsi_disable_port(encoder);
}
--
2.11.0
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
