diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lpe_audio.c | 5 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 4e24ba0..4f15a3d 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2062,6 +2062,9 @@ enum skl_disp_power_wells { #define I915_HDMI_LPE_AUDIO_SIZE 0x1000 /* DisplayPort Audio w/ LPE */ +#define VLV_AUD_CHICKEN_BIT_REG _MMIO(VLV_DISPLAY_BASE + 0x62F38) +#define VLV_CHICKEN_BIT_DBG_ENABLE (1 << 0) + #define _VLV_AUD_PORT_EN_B_DBG (VLV_DISPLAY_BASE + 0x62F20) #define _VLV_AUD_PORT_EN_C_DBG (VLV_DISPLAY_BASE + 0x62F30) #define _VLV_AUD_PORT_EN_D_DBG (VLV_DISPLAY_BASE + 0x62F34) diff --git a/drivers/gpu/drm/i915/intel_lpe_audio.c b/drivers/gpu/drm/i915/intel_lpe_audio.c index d3ffe00..7a5b41b 100644 --- a/drivers/gpu/drm/i915/intel_lpe_audio.c +++ b/drivers/gpu/drm/i915/intel_lpe_audio.c @@ -248,6 +248,11 @@ static int lpe_audio_setup(struct drm_i915_private *dev_priv) goto err_free_irq; } + /* enable chicken bit; at least this is required for Dell Wyse 3040 + * with DP outputs (but only sometimes by some reason!) + */ + I915_WRITE(VLV_AUD_CHICKEN_BIT_REG, VLV_CHICKEN_BIT_DBG_ENABLE); + return 0; err_free_irq: irq_free_desc(dev_priv->lpe_audio.irq); |
