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Message-Id: <20191006171140.114447492@linuxfoundation.org>
Date:   Sun,  6 Oct 2019 19:20:39 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Charlene Liu <charlene.liu@....com>,
        Dmytro Laktyushkin <Dmytro.Laktyushkin@....com>,
        Bhawanpreet Lakha <Bhawanpreet.Lakha@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 033/106] drm/amd/display: support spdif

From: Charlene Liu <charlene.liu@....com>

[ Upstream commit b5a41620bb88efb9fb31a4fa5e652e3d5bead7d4 ]

[Description]
port spdif fix to staging:
 spdif hardwired to afmt inst 1.
 spdif func pointer
 spdif resource allocation (reserve last audio endpoint for spdif only)

Signed-off-by: Charlene Liu <charlene.liu@....com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@....com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 .../gpu/drm/amd/display/dc/core/dc_resource.c   | 17 ++++++++---------
 drivers/gpu/drm/amd/display/dc/dce/dce_audio.c  |  4 ++--
 2 files changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index f0d68aa7c8fcc..d440b28ee43fb 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -229,12 +229,10 @@ bool resource_construct(
 				DC_ERR("DC: failed to create audio!\n");
 				return false;
 			}
-
 			if (!aud->funcs->endpoint_valid(aud)) {
 				aud->funcs->destroy(&aud);
 				break;
 			}
-
 			pool->audios[i] = aud;
 			pool->audio_count++;
 		}
@@ -1703,24 +1701,25 @@ static struct audio *find_first_free_audio(
 		const struct resource_pool *pool,
 		enum engine_id id)
 {
-	int i;
-	for (i = 0; i < pool->audio_count; i++) {
+	int i, available_audio_count;
+
+	available_audio_count = pool->audio_count;
+
+	for (i = 0; i < available_audio_count; i++) {
 		if ((res_ctx->is_audio_acquired[i] == false) && (res_ctx->is_stream_enc_acquired[i] == true)) {
 			/*we have enough audio endpoint, find the matching inst*/
 			if (id != i)
 				continue;
-
 			return pool->audios[i];
 		}
 	}
 
-    /* use engine id to find free audio */
-	if ((id < pool->audio_count) && (res_ctx->is_audio_acquired[id] == false)) {
+	/* use engine id to find free audio */
+	if ((id < available_audio_count) && (res_ctx->is_audio_acquired[id] == false)) {
 		return pool->audios[id];
 	}
-
 	/*not found the matching one, first come first serve*/
-	for (i = 0; i < pool->audio_count; i++) {
+	for (i = 0; i < available_audio_count; i++) {
 		if (res_ctx->is_audio_acquired[i] == false) {
 			return pool->audios[i];
 		}
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c b/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
index 7f6d724686f1a..abb559ce64085 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
@@ -611,6 +611,8 @@ void dce_aud_az_configure(
 
 	AZ_REG_WRITE(AZALIA_F0_CODEC_PIN_CONTROL_SINK_INFO1,
 		value);
+	DC_LOG_HW_AUDIO("\n\tAUDIO:az_configure: index: %u data, 0x%x, displayName %s: \n",
+		audio->inst, value, audio_info->display_name);
 
 	/*
 	*write the port ID:
@@ -922,7 +924,6 @@ static const struct audio_funcs funcs = {
 	.az_configure = dce_aud_az_configure,
 	.destroy = dce_aud_destroy,
 };
-
 void dce_aud_destroy(struct audio **audio)
 {
 	struct dce_audio *aud = DCE_AUD(*audio);
@@ -953,7 +954,6 @@ struct audio *dce_audio_create(
 	audio->regs = reg;
 	audio->shifts = shifts;
 	audio->masks = masks;
-
 	return &audio->base;
 }
 
-- 
2.20.1



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