It doesn't work on KBL. Just using automatic N/M. According to the bspec, when set N/M, should disable and enable transcoder which attaching DP audio. but there is no such code to do that. without this implementation except KBL platforms, seems work well.
Signed-off-by: Quanxian Wang <[email protected]> Tested-By: Wang Zhijun<[email protected]> Tested-By: Cui Yueping<[email protected]> --- drivers/gpu/drm/i915/intel_audio.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 52c207e..0542031 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -300,7 +300,7 @@ hsw_dp_audio_config_update(struct intel_crtc *intel_crtc, enum port port, tmp &= ~AUD_CONFIG_N_PROG_ENABLE; tmp |= AUD_CONFIG_N_VALUE_INDEX; - if (nm) { + if (!IS_KABYLAKE(dev_priv) && nm) { tmp &= ~AUD_CONFIG_N_MASK; tmp |= AUD_CONFIG_N(nm->n); tmp |= AUD_CONFIG_N_PROG_ENABLE; @@ -308,6 +308,9 @@ hsw_dp_audio_config_update(struct intel_crtc *intel_crtc, enum port port, I915_WRITE(HSW_AUD_CFG(pipe), tmp); + if (IS_KABYLAKE(dev_priv)) + return; + tmp = I915_READ(HSW_AUD_M_CTS_ENABLE(pipe)); tmp &= ~AUD_CONFIG_M_MASK; tmp &= ~AUD_M_CTS_M_VALUE_INDEX; -- 2.5.0 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
