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drm/i915/dsi: Do not read the transcoder register.

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As per the Bspec, port mapping is fixed for mipi dsi.

v2: Reuse the existing function (Jani)

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/20191119072004.4093-1-vandita.kulkarni@intel.com
This commit is contained in:
Vandita Kulkarni 2019-11-19 12:50:04 +05:30 committed by Jani Nikula
parent 530197795f
commit 6d73af2767
1 changed files with 11 additions and 6 deletions
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17
drivers/gpu/drm/i915/display/intel_display.c
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@ -10577,16 +10577,21 @@ static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
struct intel_shared_dpll *pll;
enum port port;
u32 tmp;
tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
if (INTEL_GEN(dev_priv) >= 12)
port = TGL_TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
else
port = TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
if (transcoder_is_dsi(cpu_transcoder)) {
port = (cpu_transcoder == TRANSCODER_DSI_A) ?
PORT_A : PORT_B;
} else {
tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
if (INTEL_GEN(dev_priv) >= 12)
port = TGL_TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
else
port = TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
}
if (INTEL_GEN(dev_priv) >= 11)
icelake_get_ddi_pll(dev_priv, port, pipe_config);