From: Madhav Chauhan <madhav.chau...@intel.com>
This patch configures mode of combo phy as DDI and
disable IO power for DDI ports used by DSI.
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 44696848ffd7..ac22c74ae146 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -873,6 +873,26 @@ static void gen11_dsi_disable_port(struct intel_encoder
*encoder)
}
}
+static void gen11_dsi_disable_io_power(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);
+ enum port port;
+ u32 tmp;
+
+ intel_display_power_put(dev_priv, POWER_DOMAIN_PORT_DDI_A_IO);
+
+ if (intel_dsi->dual_link)
+ intel_display_power_put(dev_priv, POWER_DOMAIN_PORT_DDI_B_IO);
+
+ /* set mode to DDI */
+ for_each_dsi_port(port, intel_dsi->ports) {
+ tmp = I915_READ(ICL_DSI_IO_MODECTL(port));
+ tmp &= ~COMBO_PHY_MODE_DSI;
+ I915_WRITE(ICL_DSI_IO_MODECTL(port), tmp);
+ }
+}
+
static void __attribute__((unused)) gen11_dsi_disable(
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
@@ -895,4 +915,7 @@ static void __attribute__((unused)) gen11_dsi_disable(
/* step3: disable port */
gen11_dsi_disable_port(encoder);
+
+ /* step4: disable IO power */
+ gen11_dsi_disable_io_power(encoder);
}
--
2.11.0
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