linux-kernel - [PATCH 5.2 140/143] drm/i915/dp: Fix DSC enable code to use cpu

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Message-Id: <20190904175319.933659265@linuxfoundation.org>
Date:   Wed,  4 Sep 2019 19:54:43 +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,
        Ville Syrjala <ville.syrjala@...ux.intel.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Manasi Navare <manasi.d.navare@...el.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.2 140/143] drm/i915/dp: Fix DSC enable code to use cpu_transcoder instead of encoder->type

[ Upstream commit d4c61c4a16decd8ace8660f22c81609a539fccba ]

This patch fixes the intel_configure_pps_for_dsc_encoder() function to use
cpu_transcoder instead of encoder->type to select the correct DSC registers
that was wrongly used in the original patch for one DSC register isntance.

Fixes: 7182414e2530 ("drm/i915/dp: Configure i915 Picture parameter Set registers during DSC enabling")
Cc: Ville Syrjala <ville.syrjala@...ux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Cc: Jani Nikula <jani.nikula@...ux.intel.com>
Cc: Ville Syrjala <ville.syrjala@...ux.intel.com>
Cc: <stable@...r.kernel.org> # v5.0+
Signed-off-by: Manasi Navare <manasi.d.navare@...el.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190821215950.24223-1-manasi.d.navare@intel.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/i915/intel_vdsc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_vdsc.c b/drivers/gpu/drm/i915/intel_vdsc.c
index 3f9921ba4a769..eb978e7238c24 100644
--- a/drivers/gpu/drm/i915/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/intel_vdsc.c
@@ -539,7 +539,7 @@ static void intel_configure_pps_for_dsc_encoder(struct intel_encoder *encoder,
 	pps_val |= DSC_PIC_HEIGHT(vdsc_cfg->pic_height) |
 		DSC_PIC_WIDTH(vdsc_cfg->pic_width / num_vdsc_instances);
 	DRM_INFO("PPS2 = 0x%08x\n", pps_val);
-	if (encoder->type == INTEL_OUTPUT_EDP) {
+	if (cpu_transcoder == TRANSCODER_EDP) {
 		I915_WRITE(DSCA_PICTURE_PARAMETER_SET_2, pps_val);
 		/*
 		 * If 2 VDSC instances are needed, configure PPS for second
-- 
2.20.1