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drm/i915: Extract intel_ddi_clk_disable() 

Pull the code to disable the port clock into a function. We already have
the intel_ddi_clk_select() counterpart.

v2: Keep using intel_ddi_get_encoder_port() for now (Chris)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171010121207.570-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2017-10-10 15:12:00 +03:00
parent 40b2be419f
commit 6b8506d575
1 changed files with 16 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/gpu/drm/i915/intel_ddi.c
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@ -2141,6 +2141,21 @@ static void intel_ddi_clk_select(struct intel_encoder *encoder,
}
}
static void intel_ddi_clk_disable(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = intel_ddi_get_encoder_port(encoder);
if (IS_CANNONLAKE(dev_priv))
I915_WRITE(DPCLKA_CFGCR0, I915_READ(DPCLKA_CFGCR0) |
DPCLKA_CFGCR0_DDI_CLK_OFF(port));
else if (IS_GEN9_BC(dev_priv))
I915_WRITE(DPLL_CTRL2, I915_READ(DPLL_CTRL2) |
DPLL_CTRL2_DDI_CLK_OFF(port));
else if (INTEL_GEN(dev_priv) < 9)
I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE);
}
static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
int link_rate, uint32_t lane_count,
struct intel_shared_dpll *pll,
@ -2301,14 +2316,7 @@ static void intel_ddi_post_disable(struct intel_encoder *intel_encoder,
if (dig_port)
intel_display_power_put(dev_priv, dig_port->ddi_io_power_domain);
if (IS_CANNONLAKE(dev_priv))
I915_WRITE(DPCLKA_CFGCR0, I915_READ(DPCLKA_CFGCR0) |
DPCLKA_CFGCR0_DDI_CLK_OFF(port));
else if (IS_GEN9_BC(dev_priv))
I915_WRITE(DPLL_CTRL2, (I915_READ(DPLL_CTRL2) |
DPLL_CTRL2_DDI_CLK_OFF(port)));
else if (INTEL_GEN(dev_priv) < 9)
I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE);
intel_ddi_clk_disable(intel_encoder);
if (type == INTEL_OUTPUT_HDMI) {
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);