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Sat, 21 Dec 2024 21:00:52 -0800 (PST) From: Dmitry Baryshkov Date: Sun, 22 Dec 2024 07:00:43 +0200 Subject: [PATCH 3/6] drm/msm/dpu: don't use active in atomic_check() Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241222-drm-dirty-modeset-v1-3-0e76a53eceb9@linaro.org> References: <20241222-drm-dirty-modeset-v1-0-0e76a53eceb9@linaro.org> In-Reply-To: <20241222-drm-dirty-modeset-v1-0-0e76a53eceb9@linaro.org> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Clark , Abhinav Kumar , Sean Paul , Marijn Suijten , Chandan Uddaraju , Jeykumar Sankaran , Jordan Crouse , Sravanthi Kollukuduru Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Archit Taneja , Rajesh Yadav , linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, Simona Vetter X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2196; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=dBpoTk4s8OfoXgQIHG9q+kMWzF7ACr4fOXNDIEIP2pc=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnZ5z7MZS6rAhW4DKuCWV9b4WdZ4hjqC6HLAq/i yre35Fm6UKJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ2ec+wAKCRCLPIo+Aiko 1YNhB/9hX2wrzJFQ1fwM8icQeBER9azSe4PG8Bpkhfz75DieLiutJPwRQtpOItU+qWqg6WCbESd AFhW4a8ggukt6IuqRscFxzbxnfStjAf2/AAxGGiUjRKmbegN4evvPH5ZuwMVRYHJipxbUjM5dRq DY26GP4KUxfZcN4d8cap0cnUgNxEWBohuAcKFyOWCgnSxUgNoKTOVPzAbLRB/+eOClO0t8tg8lG mu7U1WhfrEEKB7DCcQOb4GQxWfGAazde4EKF39I9VOy3jDXwpFEdA8wWS7KB8Dd6qh4K2Qf6Lmm ngCcXoIiCtGuHQpeqXSzY8TZe2MPU/nrQD2jLanaCowQhYyE X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A The driver isn't supposed to consult crtc_state->active/active_check for resource allocation. Instead all resources should be allocated if crtc_state->enabled is set. Stop consulting active / active_changed in order to determine whether the hardware resources should be (re)allocated. Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support") Reported-by: Simona Vetter Closes: https://lore.kernel.org/dri-devel/ZtW_S0j5AEr4g0QW@phenom.ffwll.local/ Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 4 ---- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 3 +-- 2 files changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index 7191b1a6d41b3a96f956d199398f12b2923e8c82..65e33eba61726929b740831c95330756b2817e28 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -1264,10 +1264,6 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc, DRM_DEBUG_ATOMIC("%s: check\n", dpu_crtc->name); - /* force a full mode set if active state changed */ - if (crtc_state->active_changed) - crtc_state->mode_changed = true; - if (cstate->num_mixers) { rc = _dpu_crtc_check_and_setup_lm_bounds(crtc, crtc_state); if (rc) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 83de7564e2c1fe14fcf8c4f82335cafc937e1b99..d1ccdca6044353f110bf5b507788efe368f223a3 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -793,12 +793,11 @@ static int dpu_encoder_virt_atomic_check( crtc_state->mode_changed = true; /* * Release and Allocate resources on every modeset - * Dont allocate when active is false. */ if (drm_atomic_crtc_needs_modeset(crtc_state)) { dpu_rm_release(global_state, drm_enc); - if (!crtc_state->active_changed || crtc_state->enable) + if (crtc_state->enable) ret = dpu_rm_reserve(&dpu_kms->rm, global_state, drm_enc, crtc_state, topology); if (!ret)