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| author | Jani Nikula <jani.nikula@intel.com> | 2016-03-18 18:05:42 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2016-03-21 13:58:58 +0300 |
| commit | 4d1de97568321828b9e63522c60ee77d23925471 (patch) | |
| tree | 642d3200e22594e7ed1914e48f8a18036ee951c9 /drivers/gpu/drm/i915/intel_ddi.c | |
| parent | cf30429e9420556399aab92995ff23e15c22de6b (diff) | |
| download | linux-4d1de97568321828b9e63522c60ee77d23925471.tar.xz | |
drm/i915/bxt: add dsi transcoders
The BXT display connections have DSI transcoders A and C that can be
muxed to any pipe, not unlike the eDP transcoder. Add the notion of DSI
transcoders.
The "normal" transcoders A, B and C are not used with BXT DSI, so care
must be taken to avoid accessing those registers with DSI transcoders in
the hardware state readout, modeset, and generally everywhere.
v2: addressing comments by Ville:
- rename the dsi get config function to hsw_get_dsi_transcoder_state
- rebase onto the higher level split of pipe/transcoder functions
- use more has_dsi_encoder as we can now because of the above,
with no need to look at the transcoder so much
- rename IS_DSI_TRANSCODER to transcoder_is_dsi
- use the above a bit more instead of comparing to < TRANSCODER_EDP
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/299740536b7941e31b2744f3ce34f7afe936a771.1458313400.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ddi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ddi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 91654ffc3a42..e6c3a80e1360 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1061,6 +1061,8 @@ void intel_ddi_set_pipe_settings(struct drm_crtc *crtc) uint32_t temp; if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP || type == INTEL_OUTPUT_DP_MST) { + WARN_ON(transcoder_is_dsi(cpu_transcoder)); + temp = TRANS_MSA_SYNC_CLK; switch (intel_crtc->config->pipe_bpp) { case 18: @@ -1942,6 +1944,10 @@ void intel_ddi_get_config(struct intel_encoder *encoder, struct intel_hdmi *intel_hdmi; u32 temp, flags = 0; + /* XXX: DSI transcoder paranoia */ + if (WARN_ON(transcoder_is_dsi(cpu_transcoder))) + return; + temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); if (temp & TRANS_DDI_PHSYNC) flags |= DRM_MODE_FLAG_PHSYNC; |