[PATCH v3 06/10] drm/nouveau: Use supplied HDMI InfoFrames on GT215 hardware

[Alastair Bridgewater]

Now that we have the InfoFrame data being provided, for the most
part, program the hardware to use it.

While we're here, and since the functionality will come in handy
for supporting 3D stereoscopy, implement setting the Vendor
("generic") InfoFrame.

Also don't enable any AVI or Vendor InfoFrame that is not provided,
and disable the Vendor InfoFrame when disabling the output.

Ignore the Audio InfoFrame: We don't supply it, and altering HDMI
audio semantics (for better or worse) on this hardware is out of
scope for me at this time.

Signed-off-by: Alastair Bridgewater <alastair.bridgewater at gmail.com>
---
 .../gpu/drm/nouveau/nvkm/engine/disp/hdmigt215.c   | 37 ++++++++++++++++++----
 1 file changed, 31 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigt215.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigt215.c
index 8ed00db..257f7c7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigt215.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigt215.c
@@ -37,6 +37,8 @@ gt215_hdmi_ctrl(NV50_DISP_MTHD_V1)
 	union {
 		struct nv50_disp_sor_hdmi_pwr_v0 v0;
 	} *args = data;
+	struct packed_hdmi_infoframe avi_infoframe;
+	struct packed_hdmi_infoframe vendor_infoframe;
 	u32 ctrl;
 	int ret = -ENOSYS;
 
@@ -62,8 +64,17 @@ gt215_hdmi_ctrl(NV50_DISP_MTHD_V1)
 		    + args->v0.vendor_infoframe_length) < size)
 		return -E2BIG;
 
+	pack_hdmi_infoframe(&avi_infoframe,
+			    data,
+			    args->v0.avi_infoframe_length);
+
+	pack_hdmi_infoframe(&vendor_infoframe,
+			    data + args->v0.avi_infoframe_length,
+			    args->v0.vendor_infoframe_length);
+
 	if (!(ctrl & 0x40000000)) {
 		nvkm_mask(device, 0x61c5a4 + soff, 0x40000000, 0x00000000);
+		nvkm_mask(device, 0x61c53c + soff, 0x00000001, 0x00000000);
 		nvkm_mask(device, 0x61c520 + soff, 0x00000001, 0x00000000);
 		nvkm_mask(device, 0x61c500 + soff, 0x00000001, 0x00000000);
 		return 0;
@@ -71,12 +82,14 @@ gt215_hdmi_ctrl(NV50_DISP_MTHD_V1)
 
 	/* AVI InfoFrame */
 	nvkm_mask(device, 0x61c520 + soff, 0x00000001, 0x00000000);
-	nvkm_wr32(device, 0x61c528 + soff, 0x000d0282);
-	nvkm_wr32(device, 0x61c52c + soff, 0x0000006f);
-	nvkm_wr32(device, 0x61c530 + soff, 0x00000000);
-	nvkm_wr32(device, 0x61c534 + soff, 0x00000000);
-	nvkm_wr32(device, 0x61c538 + soff, 0x00000000);
-	nvkm_mask(device, 0x61c520 + soff, 0x00000001, 0x00000001);
+	if (args->v0.avi_infoframe_length) {
+		nvkm_wr32(device, 0x61c528 + soff, avi_infoframe.header);
+		nvkm_wr32(device, 0x61c52c + soff, avi_infoframe.subpack0_low);
+		nvkm_wr32(device, 0x61c530 + soff, avi_infoframe.subpack0_high);
+		nvkm_wr32(device, 0x61c534 + soff, avi_infoframe.subpack1_low);
+		nvkm_wr32(device, 0x61c538 + soff, avi_infoframe.subpack1_high);
+		nvkm_mask(device, 0x61c520 + soff, 0x00000001, 0x00000001);
+	}
 
 	/* Audio InfoFrame */
 	nvkm_mask(device, 0x61c500 + soff, 0x00000001, 0x00000000);
@@ -85,6 +98,18 @@ gt215_hdmi_ctrl(NV50_DISP_MTHD_V1)
 	nvkm_wr32(device, 0x61c510 + soff, 0x00000000);
 	nvkm_mask(device, 0x61c500 + soff, 0x00000001, 0x00000001);
 
+	/* Vendor InfoFrame */
+	nvkm_mask(device, 0x61c53c + soff, 0x00010001, 0x00010000);
+	if (args->v0.vendor_infoframe_length) {
+		nvkm_wr32(device, 0x61c544 + soff, vendor_infoframe.header);
+		nvkm_wr32(device, 0x61c548 + soff, vendor_infoframe.subpack0_low);
+		nvkm_wr32(device, 0x61c54c + soff, vendor_infoframe.subpack0_high);
+		/* Is there a second (or up to fourth?) set of subpack registers here? */
+		/* nvkm_wr32(device, 0x61c550 + soff, vendor_infoframe.subpack1_low); */
+		/* nvkm_wr32(device, 0x61c554 + soff, vendor_infoframe.subpack1_high); */
+		nvkm_mask(device, 0x61c53c + soff, 0x00010001, 0x00010001);
+	}
+
 	nvkm_mask(device, 0x61c5d0 + soff, 0x00070001, 0x00010001); /* SPARE, HW_CTS */
 	nvkm_mask(device, 0x61c568 + soff, 0x00010101, 0x00000000); /* ACR_CTRL, ?? */
 	nvkm_mask(device, 0x61c578 + soff, 0x80000000, 0x80000000); /* ACR_0441_ENABLE */
-- 
2.10.2