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drm/i915/icl: Enable DSI transcoders

Telusuri Sumber 
This patch enables DSI transcoders by writing to
TRANS_CONF registers and wait for its state to be enabled.

v2 by Jani:
 - Rebase

Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/4b8ea0298ef9d6832a2dd69c923832d0b7b58184.1539613303.git.jani.nikula@intel.com
This commit is contained in:
Madhav Chauhan
2018-10-15 17:28:05 +03:00
committed by Jani Nikula
orang tua 372610f3c8
melakukan 303e347ceb
1 mengubah file dengan 25 tambahan dan 0 penghapusan
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25
drivers/gpu/drm/i915/icl_dsi.c
Melihat File

@@ -591,6 +591,28 @@ gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder,
}
}
static void gen11_dsi_enable_transcoder(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);
enum port port;
enum transcoder dsi_trans;
u32 tmp;
for_each_dsi_port(port, intel_dsi->ports) {
dsi_trans = dsi_port_to_transcoder(port);
tmp = I915_READ(PIPECONF(dsi_trans));
tmp |= PIPECONF_ENABLE;
I915_WRITE(PIPECONF(dsi_trans), tmp);
/* wait for transcoder to be enabled */
if (intel_wait_for_register(dev_priv, PIPECONF(dsi_trans),
I965_PIPECONF_ACTIVE,
I965_PIPECONF_ACTIVE, 10))
DRM_ERROR("DSI transcoder not enabled\n");
}
}
static void
gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config)
@@ -630,4 +652,7 @@ gen11_dsi_pre_enable(struct intel_encoder *encoder,
/* step6c: configure transcoder timings */
gen11_dsi_set_transcoder_timings(encoder, pipe_config);
/* step6d: enable dsi transcoder */
gen11_dsi_enable_transcoder(encoder);
}