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drm/i915/rkl: Don't try to read out DSI transcoders

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RKL doesn't have DSI outputs, so we shouldn't try to read out the DSI
transcoder registers.

v2(MattR):
 - Just set the 'extra panel mask' to edp | dsi0 | dsi1 and then mask
   against the platform's cpu_transcoder_mask to filter out the ones
   that don't exist on a given platform.  (Ville)

v3(MattR):
 - Only include DSI transcoders on gen11+ again. (Ville)
 - Use for_each_cpu_transcoder_masked() for loop. (Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Aditya Swarup <aditya.swarup@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200606025740.3308880-5-matthew.d.roper@intel.com
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
This commit is contained in:
Aditya Swarup 2020-06-05 19:57:37 -07:00 committed by Matt Roper
parent 2cf122070c
commit 617458cdc3
1 changed files with 3 additions and 7 deletions
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10
drivers/gpu/drm/i915/display/intel_display.c
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@ -10897,7 +10897,7 @@ static bool hsw_get_transcoder_state(struct intel_crtc *crtc,
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum intel_display_power_domain power_domain;
unsigned long panel_transcoder_mask = 0;
unsigned long panel_transcoder_mask = BIT(TRANSCODER_EDP);
unsigned long enabled_panel_transcoders = 0;
enum transcoder panel_transcoder;
intel_wakeref_t wf;
@ -10907,9 +10907,6 @@ static bool hsw_get_transcoder_state(struct intel_crtc *crtc,
panel_transcoder_mask |=
BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1);
if (HAS_TRANSCODER(dev_priv, TRANSCODER_EDP))
panel_transcoder_mask |= BIT(TRANSCODER_EDP);
/*
* The pipe->transcoder mapping is fixed with the exception of the eDP
* and DSI transcoders handled below.
@ -10920,9 +10917,8 @@ static bool hsw_get_transcoder_state(struct intel_crtc *crtc,
* XXX: Do intel_display_power_get_if_enabled before reading this (for
* consistency and less surprising code; it's in always on power).
*/
for_each_set_bit(panel_transcoder,
&panel_transcoder_mask,
ARRAY_SIZE(INTEL_INFO(dev_priv)->trans_offsets)) {
for_each_cpu_transcoder_masked(dev_priv, panel_transcoder,
panel_transcoder_mask) {
bool force_thru = false;
enum pipe trans_pipe;