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drm/i915/icl: Ungate DSI clocks
Ungate the clocks on the selected port. Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com> Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/2a01b3158feda624f98581b780854fe3df8c328d.1543500286.git.jani.nikula@intel.com
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@ -553,6 +553,23 @@ static void gen11_dsi_gate_clocks(struct intel_encoder *encoder)
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mutex_unlock(&dev_priv->dpll_lock);
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}
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static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder)
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{
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struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
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struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
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u32 tmp;
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enum port port;
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mutex_lock(&dev_priv->dpll_lock);
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tmp = I915_READ(DPCLKA_CFGCR0_ICL);
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for_each_dsi_port(port, intel_dsi->ports) {
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tmp &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port);
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}
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I915_WRITE(DPCLKA_CFGCR0_ICL, tmp);
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mutex_unlock(&dev_priv->dpll_lock);
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}
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static void
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gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
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const struct intel_crtc_state *pipe_config)
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@ -1061,6 +1078,7 @@ static void gen11_dsi_disable_port(struct intel_encoder *encoder)
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u32 tmp;
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enum port port;
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gen11_dsi_ungate_clocks(encoder);
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for_each_dsi_port(port, intel_dsi->ports) {
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tmp = I915_READ(DDI_BUF_CTL(port));
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tmp &= ~DDI_BUF_CTL_ENABLE;
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@ -1072,6 +1090,7 @@ static void gen11_dsi_disable_port(struct intel_encoder *encoder)
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DRM_ERROR("DDI port:%c buffer not idle\n",
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port_name(port));
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}
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gen11_dsi_ungate_clocks(encoder);
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}
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static void gen11_dsi_disable_io_power(struct intel_encoder *encoder)
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