From: Madhav Chauhan <madhav.chauhan@xxxxxxxxx>
Ungate the clocks on the selected port.
Signed-off-by: Madhav Chauhan <madhav.chauhan@xxxxxxxxx>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
---
drivers/gpu/drm/i915/icl_dsi.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
index fe4efc7..80382fb 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -553,6 +553,23 @@ static void gen11_dsi_gate_clocks(struct intel_encoder *encoder)
mutex_unlock(&dev_priv->dpll_lock);
}
+static void gen11_dsi_ungate_clocks(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;
+
+ mutex_lock(&dev_priv->dpll_lock);
+ tmp = I915_READ(DPCLKA_CFGCR0_ICL);
+ for_each_dsi_port(port, intel_dsi->ports) {
+ tmp &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port);
+ }
+
+ I915_WRITE(DPCLKA_CFGCR0_ICL, tmp);
+ mutex_unlock(&dev_priv->dpll_lock);
+}
+
static void
gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config)
@@ -1061,6 +1078,7 @@ static void gen11_dsi_disable_port(struct intel_encoder *encoder)
u32 tmp;
enum port port;
+ gen11_dsi_ungate_clocks(encoder);
for_each_dsi_port(port, intel_dsi->ports) {
tmp = I915_READ(DDI_BUF_CTL(port));
tmp &= ~DDI_BUF_CTL_ENABLE;
@@ -1072,6 +1090,7 @@ static void gen11_dsi_disable_port(struct intel_encoder *encoder)
DRM_ERROR("DDI port:%c buffer not idle\n",
port_name(port));
}
+ gen11_dsi_ungate_clocks(encoder);
}
static void gen11_dsi_disable_io_power(struct intel_encoder *encoder)
--
1.9.1
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