Patch "drm/radeon: cleaned up VCO output settings for DP audio" has been added to the 4.4-stable tree

Patch "drm/radeon: cleaned up VCO output settings for DP audio" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/radeon: cleaned up VCO output settings for DP audio

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-radeon-cleaned-up-vco-output-settings-for-dp-audio.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From c9a392eac18409f51a071520cf508c0b4ad990e2 Mon Sep 17 00:00:00 2001
From: Slava Grigorev <slava.grigorev@amd.com>
Date: Tue, 26 Jan 2016 16:45:10 -0500
Subject: drm/radeon: cleaned up VCO output settings for DP audio
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Slava Grigorev <slava.grigorev@amd.com>

commit c9a392eac18409f51a071520cf508c0b4ad990e2 upstream.

This is preparation for the fixes in the following patches.

Signed-off-by: Slava Grigorev <slava.grigorev@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/radeon/dce6_afmt.c       |    2 +-
 drivers/gpu/drm/radeon/radeon.h          |    2 +-
 drivers/gpu/drm/radeon/radeon_atombios.c |   12 +++++++-----
 drivers/gpu/drm/radeon/radeon_audio.c    |    8 +-------
 4 files changed, 10 insertions(+), 14 deletions(-)

--- a/drivers/gpu/drm/radeon/dce6_afmt.c
+++ b/drivers/gpu/drm/radeon/dce6_afmt.c
@@ -315,7 +315,7 @@ void dce6_dp_audio_set_dto(struct radeon
 			div = 0;
 
 		if (div)
-			clock = rdev->clock.gpupll_outputfreq * 10 / div;
+			clock /= div;
 
 		WREG32(DCE8_DCCG_AUDIO_DTO1_PHASE, 24000);
 		WREG32(DCE8_DCCG_AUDIO_DTO1_MODULE, clock);
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -268,7 +268,7 @@ struct radeon_clock {
 	uint32_t current_dispclk;
 	uint32_t dp_extclk;
 	uint32_t max_pixel_clock;
-	uint32_t gpupll_outputfreq;
+	uint32_t vco_freq;
 };
 
 /*
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1257,12 +1257,14 @@ bool radeon_atom_get_clock_info(struct d
 		rdev->mode_info.firmware_flags =
 			le16_to_cpu(firmware_info->info.usFirmwareCapability.susAccess);
 
-		if (ASIC_IS_DCE8(rdev)) {
-			rdev->clock.gpupll_outputfreq =
+		if (ASIC_IS_DCE8(rdev))
+			rdev->clock.vco_freq =
 				le32_to_cpu(firmware_info->info_22.ulGPUPLL_OutputFreq);
-			if (rdev->clock.gpupll_outputfreq == 0)
-				rdev->clock.gpupll_outputfreq = 360000;	/* 3.6 GHz */
-		}
+		else
+			rdev->clock.vco_freq = rdev->clock.current_dispclk;
+
+		if (rdev->clock.vco_freq == 0)
+			rdev->clock.vco_freq = 360000;	/* 3.6 GHz */
 
 		return true;
 	}
--- a/drivers/gpu/drm/radeon/radeon_audio.c
+++ b/drivers/gpu/drm/radeon/radeon_audio.c
@@ -739,9 +739,6 @@ static void radeon_audio_dp_mode_set(str
 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
-	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
-	struct radeon_connector_atom_dig *dig_connector =
-		radeon_connector->con_priv;
 
 	if (!dig || !dig->afmt)
 		return;
@@ -753,10 +750,7 @@ static void radeon_audio_dp_mode_set(str
 		radeon_audio_write_speaker_allocation(encoder);
 		radeon_audio_write_sad_regs(encoder);
 		radeon_audio_write_latency_fields(encoder, mode);
-		if (rdev->clock.dp_extclk || ASIC_IS_DCE5(rdev))
-			radeon_audio_set_dto(encoder, rdev->clock.default_dispclk * 10);
-		else
-			radeon_audio_set_dto(encoder, dig_connector->dp_clock);
+		radeon_audio_set_dto(encoder, rdev->clock.vco_freq * 10);
 		radeon_audio_set_audio_packet(encoder);
 		radeon_audio_select_pin(encoder);
 


Patches currently in stable-queue which might be from slava.grigorev@amd.com are

queue-4.4/drm-radeon-fix-dp-audio-support-for-apu-with-dce4.1-display-engine.patch
queue-4.4/drm-radeon-cleaned-up-vco-output-settings-for-dp-audio.patch
queue-4.4/drm-radeon-fix-slow-audio-over-dp-on-dce8.patch
queue-4.4/drm-radeon-add-a-common-function-for-dfs-handling.patch