From nobody Sun Sep 22 02:01:46 2024 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A4896C433FE for ; Thu, 12 May 2022 06:30:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350413AbiELGah (ORCPT ); Thu, 12 May 2022 02:30:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41150 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350355AbiELGa0 (ORCPT ); Thu, 12 May 2022 02:30:26 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9555A2265F1 for ; Wed, 11 May 2022 23:30:25 -0700 (PDT) X-UUID: d191059cde8742f8bb9e173833a27648-20220512 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4,REQID:6210e0bb-7a77-4aa8-8470-0354b09a5a2e,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-META: VersionHash:faefae9,CLOUDID:bd38eff1-ab23-4aed-a67b-f96514452486,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,File:nil,QS:0,BEC:nil X-UUID: d191059cde8742f8bb9e173833a27648-20220512 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 139098106; Thu, 12 May 2022 14:30:20 +0800 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 12 May 2022 14:30:19 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 12 May 2022 14:30:19 +0800 Received: from mszsdaap41.gcn.mediatek.inc (10.16.6.141) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 12 May 2022 14:30:18 +0800 From: To: , , , , CC: , , , , , , , Xinlei Lee Subject: [PATCH v6,2/4] drm/mediatek: Separate poweron/poweroff from enable/disable and define new funcs Date: Thu, 12 May 2022 14:30:10 +0800 Message-ID: <1652337012-9053-3-git-send-email-xinlei.lee@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1652337012-9053-1-git-send-email-xinlei.lee@mediatek.com> References: <1652337012-9053-1-git-send-email-xinlei.lee@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Jitao Shi In order to match the changes of "Use the drm_panel_bridge API", the poweron/poweroff of dsi is extracted from enable/disable and defined as new funcs (atomic_pre_enable/atomic_post_disable). Fixes: 2dd8075d2185 ("drm/mediatek: mtk_dsi: Use the drm_panel_bridge API") Signed-off-by: Jitao Shi Signed-off-by: Xinlei Lee Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Rex-BC Chen --- drivers/gpu/drm/mediatek/mtk_dsi.c | 53 +++++++++++++++++++----------- 1 file changed, 34 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/= mtk_dsi.c index f880136cec09..d9a6b928dba8 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -691,16 +691,6 @@ static void mtk_dsi_poweroff(struct mtk_dsi *dsi) if (--dsi->refcount !=3D 0) return; =20 - /* - * mtk_dsi_stop() and mtk_dsi_start() is asymmetric, since - * mtk_dsi_stop() should be called after mtk_drm_crtc_atomic_disable(), - * which needs irq for vblank, and mtk_dsi_stop() will disable irq. - * mtk_dsi_start() needs to be called in mtk_output_dsi_enable(), - * after dsi is fully set. - */ - mtk_dsi_stop(dsi); - - mtk_dsi_switch_to_cmd_mode(dsi, VM_DONE_INT_FLAG, 500); mtk_dsi_reset_engine(dsi); mtk_dsi_lane0_ulp_mode_enter(dsi); mtk_dsi_clk_ulp_mode_enter(dsi); @@ -715,17 +705,9 @@ static void mtk_dsi_poweroff(struct mtk_dsi *dsi) =20 static void mtk_output_dsi_enable(struct mtk_dsi *dsi) { - int ret; - if (dsi->enabled) return; =20 - ret =3D mtk_dsi_poweron(dsi); - if (ret < 0) { - DRM_ERROR("failed to power on dsi\n"); - return; - } - mtk_dsi_set_mode(dsi); mtk_dsi_clk_hs_mode(dsi, 1); =20 @@ -739,7 +721,16 @@ static void mtk_output_dsi_disable(struct mtk_dsi *dsi) if (!dsi->enabled) return; =20 - mtk_dsi_poweroff(dsi); + /* + * mtk_dsi_stop() and mtk_dsi_start() is asymmetric, since + * mtk_dsi_stop() should be called after mtk_drm_crtc_atomic_disable(), + * which needs irq for vblank, and mtk_dsi_stop() will disable irq. + * mtk_dsi_start() needs to be called in mtk_output_dsi_enable(), + * after dsi is fully set. + */ + mtk_dsi_stop(dsi); + + mtk_dsi_switch_to_cmd_mode(dsi, VM_DONE_INT_FLAG, 500); =20 dsi->enabled =3D false; } @@ -776,13 +767,37 @@ static void mtk_dsi_bridge_atomic_enable(struct drm_b= ridge *bridge, { struct mtk_dsi *dsi =3D bridge_to_dsi(bridge); =20 + if (dsi->refcount =3D=3D 0) + return; + mtk_output_dsi_enable(dsi); } =20 +static void mtk_dsi_bridge_atomic_pre_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) +{ + struct mtk_dsi *dsi =3D bridge_to_dsi(bridge); + int ret; + + ret =3D mtk_dsi_poweron(dsi); + if (ret < 0) + DRM_ERROR("failed to power on dsi\n"); +} + +static void mtk_dsi_bridge_atomic_post_disable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) +{ + struct mtk_dsi *dsi =3D bridge_to_dsi(bridge); + + mtk_dsi_poweroff(dsi); +} + static const struct drm_bridge_funcs mtk_dsi_bridge_funcs =3D { .attach =3D mtk_dsi_bridge_attach, .atomic_disable =3D mtk_dsi_bridge_atomic_disable, .atomic_enable =3D mtk_dsi_bridge_atomic_enable, + .atomic_pre_enable =3D mtk_dsi_bridge_atomic_pre_enable, + .atomic_post_disable =3D mtk_dsi_bridge_atomic_post_disable, .mode_set =3D mtk_dsi_bridge_mode_set, }; =20 --=20 2.18.0