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drm/i915/icl: Ungate DSI clocks

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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
This commit is contained in:
Madhav Chauhan 2018-11-29 16:12:34 +02:00 committed by Jani Nikula
parent 32250c8e0e
commit 1026bea003
1 changed files with 19 additions and 0 deletions
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19
drivers/gpu/drm/i915/icl_dsi.c
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@ -553,6 +553,23 @@ static void gen11_dsi_gate_clocks(struct intel_encoder *encoder)
mutex_unlock(&dev_priv->dpll_lock); 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 static void
gen11_dsi_configure_transcoder(struct intel_encoder *encoder, gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config) const struct intel_crtc_state *pipe_config)
@ -1061,6 +1078,7 @@ static void gen11_dsi_disable_port(struct intel_encoder *encoder)
u32 tmp; u32 tmp;
enum port port; enum port port;
gen11_dsi_ungate_clocks(encoder);
for_each_dsi_port(port, intel_dsi->ports) { for_each_dsi_port(port, intel_dsi->ports) {
tmp = I915_READ(DDI_BUF_CTL(port)); tmp = I915_READ(DDI_BUF_CTL(port));
tmp &= ~DDI_BUF_CTL_ENABLE; 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", DRM_ERROR("DDI port:%c buffer not idle\n",
port_name(port)); port_name(port));
} }
gen11_dsi_ungate_clocks(encoder);
} }
static void gen11_dsi_disable_io_power(struct intel_encoder *encoder) static void gen11_dsi_disable_io_power(struct intel_encoder *encoder)