Hi Ben,
The below patch from Jani also touches nouveau, can you please take a look at it an ack? The core part + nouveau apply on top of drm-next, the i915 part needs stuff from my next queue. So I'd prefer if we can get this in through drm-intel-next.
Hi Dave,
Ack on that from your side?
Cheers, Daniel
On Tue, Oct 28, 2014 at 3:20 PM, Jani Nikula jani.nikula@intel.com wrote:
The Baseline_ELD_Len field does not include ELD Header Block size.
From High Definition Audio Specification, Revision 1.0a:
The header block is a fixed size of 4 bytes. The baseline block is variable size in multiple of 4 bytes, and its size is defined in the header block Baseline_ELD_Len field (in number of DWords).Do not include the header size in Baseline_ELD_Len field. Fix all known users of eld[2].
While at it, switch to DIV_ROUND_UP instead of open coding it.
Signed-off-by: Jani Nikula jani.nikula@intel.com
This is based on an audio rework series which is mid-way being merged to i915. I don't think this should be cc: stable worthy, as, AFAICT, we don't use the vendor block, and anyone reading SADs respecting SAD_Count should stop at the same offset regardless of this patch. So I propose this gets eventually merged via i915 without a rush.
drivers/gpu/drm/drm_edid.c | 7 +++++-- drivers/gpu/drm/i915/intel_audio.c | 16 ++++++++-------- drivers/gpu/drm/nouveau/nv50_display.c | 3 ++- 3 files changed, 15 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 3bf999134bcc..45aaa6f5ef36 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3128,9 +3128,12 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid) } } eld[5] |= sad_count << 4;
eld[2] = (20 + mnl + sad_count * 3 + 3) / 4;DRM_DEBUG_KMS("ELD size %d, SAD count %d\n", (int)eld[2], sad_count);
eld[DRM_ELD_BASELINE_ELD_LEN] =DIV_ROUND_UP(drm_eld_calc_baseline_block_size(eld), 4);DRM_DEBUG_KMS("ELD size %d, SAD count %d\n",drm_eld_size(eld), sad_count);} EXPORT_SYMBOL(drm_edid_to_eld);
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 20af973d7cba..439fa4afa18b 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -107,7 +107,7 @@ static bool intel_eld_uptodate(struct drm_connector *connector, tmp &= ~bits_elda; I915_WRITE(reg_elda, tmp);
for (i = 0; i < eld[2]; i++)
for (i = 0; i < drm_eld_size(eld) / 4; i++) if (I915_READ(reg_edid) != *((uint32_t *)eld + i)) return false;@@ -162,7 +162,7 @@ static void g4x_audio_codec_enable(struct drm_connector *connector, len = (tmp >> 9) & 0x1f; /* ELD buffer size */ I915_WRITE(G4X_AUD_CNTL_ST, tmp);
len = min_t(int, eld[2], len);
len = min(drm_eld_size(eld) / 4, len); DRM_DEBUG_DRIVER("ELD size %d\n", len); for (i = 0; i < len; i++) I915_WRITE(G4X_HDMIW_HDMIEDID, *((uint32_t *)eld + i));@@ -209,7 +209,7 @@ static void hsw_audio_codec_enable(struct drm_connector *connector, int len, i;
DRM_DEBUG_KMS("Enable audio codec on pipe %c, %u bytes ELD\n",
pipe_name(pipe), eld[2]);
pipe_name(pipe), drm_eld_size(eld)); /* Enable audio presence detect, invalidate ELD */ tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);@@ -225,8 +225,8 @@ static void hsw_audio_codec_enable(struct drm_connector *connector, I915_WRITE(HSW_AUD_DIP_ELD_CTRL(pipe), tmp);
/* Up to 84 bytes of hw ELD buffer */
len = min_t(int, eld[2], 21);for (i = 0; i < len; i++)
len = min(drm_eld_size(eld), 84);for (i = 0; i < len / 4; i++) I915_WRITE(HSW_AUD_EDID_DATA(pipe), *((uint32_t *)eld + i)); /* ELD valid */@@ -315,7 +315,7 @@ static void ilk_audio_codec_enable(struct drm_connector *connector, int aud_cntrl_st2;
DRM_DEBUG_KMS("Enable audio codec on port %c, pipe %c, %u bytes ELD\n",
port_name(port), pipe_name(pipe), eld[2]);
port_name(port), pipe_name(pipe), drm_eld_size(eld)); /* XXX: vblank wait here */@@ -354,8 +354,8 @@ static void ilk_audio_codec_enable(struct drm_connector *connector, I915_WRITE(aud_cntl_st, tmp);
/* Up to 84 bytes of hw ELD buffer */
len = min_t(int, eld[2], 21);for (i = 0; i < len; i++)
len = min(drm_eld_size(eld), 84);for (i = 0; i < len / 4; i++) I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i)); /* ELD valid */diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index ae873d1a8d46..d92c11484bd9 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -1680,7 +1680,8 @@ nv50_audio_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode) drm_edid_to_eld(&nv_connector->base, nv_connector->edid); memcpy(args.data, nv_connector->base.eld, sizeof(args.data));
nvif_mthd(disp->disp, 0, &args, sizeof(args.base) + args.data[2] * 4);
nvif_mthd(disp->disp, 0, &args,sizeof(args.base) + drm_eld_size(args.data);}
static void
2.1.1
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