diff options
| author | Wu Fengguang <fengguang.wu@intel.com> | 2012-01-06 14:41:31 -0600 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-01-29 16:07:46 +0100 |
| commit | b6daa025b1e1aebf276508eb2a5a9f730391aa84 (patch) | |
| tree | 1d7b344537b409ac6c3af67027927f4326aa8553 /drivers/gpu/drm | |
| parent | 6dc0e816bb7478fd4dfebddcc65257f9ef161f7a (diff) | |
drm/i915: set AUD_CONFIG N_value_index for DisplayPort
It should be programmed to "0" for HDMI or "1" for DisplayPort.
This enables DisplayPort audio for
- HP EliteBook 8460p
(whose BIOS does not set the N_value_index bit for us)
- DisplayPort monitor hot plugged after boot
(otherwise most BIOS will fill the N_value_index bit for us)
Tested-by: Robert Lemaire <rlemaire@suse.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 8 |
2 files changed, 19 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index bbad78853482..f4daa6e60b68 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -3742,4 +3742,16 @@ */ #define GEN7_SO_WRITE_OFFSET(n) (0x5280 + (n) * 4) +#define IBX_AUD_CONFIG_A 0xe2000 +#define CPT_AUD_CONFIG_A 0xe5000 +#define AUD_CONFIG_N_VALUE_INDEX (1 << 29) +#define AUD_CONFIG_N_PROG_ENABLE (1 << 28) +#define AUD_CONFIG_UPPER_N_SHIFT 20 +#define AUD_CONFIG_UPPER_N_VALUE (0xff << 20) +#define AUD_CONFIG_LOWER_N_SHIFT 4 +#define AUD_CONFIG_LOWER_N_VALUE (0xfff << 4) +#define AUD_CONFIG_PIXEL_CLOCK_HDMI_SHIFT 16 +#define AUD_CONFIG_PIXEL_CLOCK_HDMI (0xf << 16) +#define AUD_CONFIG_DISABLE_NCTS (1 << 3) + #endif /* _I915_REG_H_ */ diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index ebb345244909..0770671fa8af 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -6141,15 +6141,18 @@ static void ironlake_write_eld(struct drm_connector *connector, uint32_t i; int len; int hdmiw_hdmiedid; + int aud_config; int aud_cntl_st; int aud_cntrl_st2; if (HAS_PCH_IBX(connector->dev)) { hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID_A; + aud_config = IBX_AUD_CONFIG_A; aud_cntl_st = IBX_AUD_CNTL_ST_A; aud_cntrl_st2 = IBX_AUD_CNTL_ST2; } else { hdmiw_hdmiedid = CPT_HDMIW_HDMIEDID_A; + aud_config = CPT_AUD_CONFIG_A; aud_cntl_st = CPT_AUD_CNTL_ST_A; aud_cntrl_st2 = CPT_AUD_CNTRL_ST2; } @@ -6157,6 +6160,7 @@ static void ironlake_write_eld(struct drm_connector *connector, i = to_intel_crtc(crtc)->pipe; hdmiw_hdmiedid += i * 0x100; aud_cntl_st += i * 0x100; + aud_config += i * 0x100; DRM_DEBUG_DRIVER("ELD on pipe %c\n", pipe_name(i)); @@ -6176,7 +6180,9 @@ static void ironlake_write_eld(struct drm_connector *connector, if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) { DRM_DEBUG_DRIVER("ELD: DisplayPort detected\n"); eld[5] |= (1 << 2); /* Conn_Type, 0x1 = DisplayPort */ - } + I915_WRITE(aud_config, AUD_CONFIG_N_VALUE_INDEX); /* 0x1 = DP */ + } else + I915_WRITE(aud_config, 0); if (intel_eld_uptodate(connector, aud_cntrl_st2, eldv, |