From nobody Sun Feb 8 12:00:29 2026 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4C5491B3938; Wed, 8 Jan 2025 10:19:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.199 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736331567; cv=none; b=SjUZg4SYnM8zqdPZ+B7WxwL+1fuSu4nNKGL+n4PYKpINcft/SP2kAHnVXCpxAertgX6fPyqRCKHuvRiIE9VHuziJ7LL70CUJZbqs1bpIbdTii277XuMj3nPwwm9dr/KDnDnt8H9/YWMltlvpFB4rDw1j/RoxkaeW18Jt/z2fBq0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736331567; c=relaxed/simple; bh=NxenpbW71x7OH6i+kNYGagbL8btyj/ql1HoLl2PnT/E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JYwkmDQNQvbI/Kx3sBWq2Ihk0YAx+HPysiSHD0vz0Zgy73PbLWGMIj14UsqC+Hu2PWZ/WM6kDRepzO5EtDX5fvObDWWVu24YtM/xfJVy3TGKRCOB8TySjHVqEIRVQTzP8WahIbEK4t/NbWeW2WTJL3casqakzK3Ee/gCOGt7DMw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=U0xpEIy0; arc=none smtp.client-ip=217.70.183.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="U0xpEIy0" Received: by mail.gandi.net (Postfix) with ESMTPA id 8B88BFF812; Wed, 8 Jan 2025 10:19:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1736331563; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=kh3U5m3wgK1XtUfGpSG9EzD3sFoAQ0yf6CZ/vPhNOfc=; b=U0xpEIy0IvTo7jyCszT8zlGUXTfYiGZeypKc2E/C4cSDyQzgYpxYb3KMZtN7PZ8hbAc3Kf tLWR1W/EJSCfn1wrUY8lnOQQTwhROTFckSw7cJUHDGtlTNYz5dE35zwBTa5kEXQ2FtJ/cM SlgY5dG0DLfNiAwacgDHC0qtBMQxx/Lxl/5wp/FYa1V2kx92ReYDrG149BkgO8R/CnZACP Aee4MJSJzJI++JXWaIeVWwc80ieWAjHgMsvWAyDiTj+2ef3L7yyhYNi3ZnKHVp09mxjBMA xjx+oxYfnAlBcB7X06TyRgIfRZ1vbbn4W4ZYo/m+20GUr4plfcKc27ZgTzy+DA== From: Herve Codina To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Marek Vasut Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Louis Chauvet , Luca Ceresoli , Thomas Petazzoni , Herve Codina Subject: [PATCH v3 2/3] drm/vc4: Move reset_pipe() to an atomic helper Date: Wed, 8 Jan 2025 11:19:01 +0100 Message-ID: <20250108101907.410456-3-herve.codina@bootlin.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250108101907.410456-1-herve.codina@bootlin.com> References: <20250108101907.410456-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-GND-Sasl: herve.codina@bootlin.com Content-Type: text/plain; charset="utf-8" reset_pipe() allows to reset the CRTC active outputs. In order to use it from other drivers without code duplication, move it to an atomic helper without any functional changes. Signed-off-by: Herve Codina --- drivers/gpu/drm/drm_atomic_helper.c | 41 +++++++++++++++++++++++++++++ drivers/gpu/drm/vc4/vc4_hdmi.c | 30 +-------------------- include/drm/drm_atomic_helper.h | 2 ++ 3 files changed, 44 insertions(+), 29 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atom= ic_helper.c index 8ed186ddaeaf..4225b814ea35 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -3363,6 +3363,47 @@ int drm_atomic_helper_disable_all(struct drm_device = *dev, } EXPORT_SYMBOL(drm_atomic_helper_disable_all); =20 +/** + * drm_atomic_helper_reset_pipe - reset the active outputs of a CRTC + * @crtc: DRM CRTC + * @ctx: lock acquisition context + * + * Reset the active outputs by indicating that connectors have changed. + * This implies a reset of all active components available between the CRT= C and + * connectors. + * + * Returns: + * 0 on success or a negative error code on failure. + */ +int drm_atomic_helper_reset_pipe(struct drm_crtc *crtc, + struct drm_modeset_acquire_ctx *ctx) +{ + struct drm_atomic_state *state; + struct drm_crtc_state *crtc_state; + int ret; + + state =3D drm_atomic_state_alloc(crtc->dev); + if (!state) + return -ENOMEM; + + state->acquire_ctx =3D ctx; + + crtc_state =3D drm_atomic_get_crtc_state(state, crtc); + if (IS_ERR(crtc_state)) { + ret =3D PTR_ERR(crtc_state); + goto out; + } + + crtc_state->connectors_changed =3D true; + + ret =3D drm_atomic_commit(state); +out: + drm_atomic_state_put(state); + + return ret; +} +EXPORT_SYMBOL(drm_atomic_helper_reset_pipe); + /** * drm_atomic_helper_shutdown - shutdown all CRTC * @dev: DRM device diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index e3818c48c9b8..19f6592a8cc5 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -269,34 +269,6 @@ static void vc4_hdmi_cec_update_clk_div(struct vc4_hdm= i *vc4_hdmi) static void vc4_hdmi_cec_update_clk_div(struct vc4_hdmi *vc4_hdmi) {} #endif =20 -static int reset_pipe(struct drm_crtc *crtc, - struct drm_modeset_acquire_ctx *ctx) -{ - struct drm_atomic_state *state; - struct drm_crtc_state *crtc_state; - int ret; - - state =3D drm_atomic_state_alloc(crtc->dev); - if (!state) - return -ENOMEM; - - state->acquire_ctx =3D ctx; - - crtc_state =3D drm_atomic_get_crtc_state(state, crtc); - if (IS_ERR(crtc_state)) { - ret =3D PTR_ERR(crtc_state); - goto out; - } - - crtc_state->connectors_changed =3D true; - - ret =3D drm_atomic_commit(state); -out: - drm_atomic_state_put(state); - - return ret; -} - static int vc4_hdmi_reset_link(struct drm_connector *connector, struct drm_modeset_acquire_ctx *ctx) { @@ -375,7 +347,7 @@ static int vc4_hdmi_reset_link(struct drm_connector *co= nnector, * would be perfectly happy if were to just reconfigure * the SCDC settings on the fly. */ - return reset_pipe(crtc, ctx); + return drm_atomic_helper_reset_pipe(crtc, ctx); } =20 static void vc4_hdmi_handle_hotplug(struct vc4_hdmi *vc4_hdmi, diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helpe= r.h index 9aa0a05aa072..56eb6881cfb2 100644 --- a/include/drm/drm_atomic_helper.h +++ b/include/drm/drm_atomic_helper.h @@ -139,6 +139,8 @@ int drm_atomic_helper_set_config(struct drm_mode_set *s= et, =20 int drm_atomic_helper_disable_all(struct drm_device *dev, struct drm_modeset_acquire_ctx *ctx); +int drm_atomic_helper_reset_pipe(struct drm_crtc *crtc, + struct drm_modeset_acquire_ctx *ctx); void drm_atomic_helper_shutdown(struct drm_device *dev); struct drm_atomic_state * drm_atomic_helper_duplicate_state(struct drm_device *dev, --=20 2.47.1