From patchwork Mon Feb 27 11:39:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 657416 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 1873AC7EE31 for ; Mon, 27 Feb 2023 11:41:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229659AbjB0LlC (ORCPT ); Mon, 27 Feb 2023 06:41:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38370 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229590AbjB0LlB (ORCPT ); Mon, 27 Feb 2023 06:41:01 -0500 Received: from mail-pj1-x102e.google.com (mail-pj1-x102e.google.com [IPv6:2607:f8b0:4864:20::102e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 64DF116337 for ; Mon, 27 Feb 2023 03:41:00 -0800 (PST) Received: by mail-pj1-x102e.google.com with SMTP id me6-20020a17090b17c600b0023816b0c7ceso1858472pjb.2 for ; Mon, 27 Feb 2023 03:41:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=gqI591/7pV38dOGca+aLBhhdwvSSpofrW8ilT0Vq6Zg=; b=Xjfy4NB+G9b/rJH2Oihga0K2We5O3rrslN0dJKzKjrImOCleHki4h0U1BrEsYn3tWl SgBBawNX7nG6KEGvcEetniuB0cUn/0fOdquX36Pz2OEVwHp9EjVFgzfooIHSiyetck7D eiTN583Tp++ed/12lLhMelSuG+xeGDkWDOAzU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gqI591/7pV38dOGca+aLBhhdwvSSpofrW8ilT0Vq6Zg=; b=SAJllTyGeY3l9Wvz7pGIGQ+r1VAO3MwoJZVj9YcOpQwiiec4ITEY6glZt14ZNmNaMy kNhEeZk6SO8EWUA8YLYFxcWXLopEeWWv41GMMG1wfNRH6xiGeUxhbU0mUqYR07rbF0yT IKUg5XHC5pfdaykmoPTuueYE9gXe6tC8AVoyiL/WSznpToehk2c2gs4NrqYTGqKUeT4M 2HwOt7nD2XfApSJ1Bc6/aiIlrj8zmKyrZzpY6HoSCo5AH5x53AbII7N49uZBMshxR8x0 emdUJhxcNtLsYtnWvq7LSFY5bpMNT6nF01xEZuiuZFBXnc4Ki3kWrKLWSJOG1x2LyNni g8Ng== X-Gm-Message-State: AO0yUKUm37gsDEt+KpBzYKxlPFhCSwfqWCKDJk6dWoQpDCPd4w8m3sfn 9kko1vdkUqCUvT1zLH7NchpYZg== X-Google-Smtp-Source: AK7set86pN+hB+Imuo9ChgZR9RSwLTwRYFg6nxuG5+Ch8jtJy+Rf0iUPmCmc8Js1bSehadoMyyAr5Q== X-Received: by 2002:a17:903:6c7:b0:19c:a395:4acf with SMTP id kj7-20020a17090306c700b0019ca3954acfmr17002454plb.40.1677498060056; Mon, 27 Feb 2023 03:41:00 -0800 (PST) Received: from localhost.localdomain ([94.140.8.120]) by smtp.gmail.com with ESMTPSA id k10-20020a170902ba8a00b0019c919bccf8sm4395277pls.86.2023.02.27.03.40.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Feb 2023 03:40:59 -0800 (PST) From: Jagan Teki To: Andrzej Hajda , Inki Dae , Marek Szyprowski , Seung-Woo Kim , Kyungmin Park , Frieder Schrempf , Tim Harvey , Adam Ford , Laurent Pinchart , Marek Vasut Cc: Matteo Lisi , dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, NXP Linux Team , linux-amarula , Jagan Teki Subject: [PATCH v13 12/18] drm: exynos: dsi: Consolidate component and bridge Date: Mon, 27 Feb 2023 17:09:19 +0530 Message-Id: <20230227113925.875425-13-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230227113925.875425-1-jagan@amarulasolutions.com> References: <20230227113925.875425-1-jagan@amarulasolutions.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org DSI host registration, attach and detach operations are quite different for the component and bridge-based DRM drivers.  Supporting generic bridge driver to use both component and bridge based DRM drivers can be tricky and would require additional host related operation hooks. Add host operation hooks for registering and unregistering Exynos and generic drivers, where Exynos hooks are used in existing Exynos component based DRM drivers and generic hooks are used in i.MX8M bridge based DRM drivers.  Add host attach and detach operation hooks for Exynos component DRM drivers and those get invoked while DSI core host attach and detach gets called. Reviewed-by: Marek Vasut Signed-off-by: Marek Szyprowski Signed-off-by: Jagan Teki --- Changes for v13: - none Changes for v12: - fix unneeded decleration - collect RB from Marek Changes for v11: - none Changes for v10: - split from previous series patch "drm: bridge: Generalize Exynos-DSI driver into a Samsung DSIM bridge" drivers/gpu/drm/exynos/exynos_drm_dsi.c | 169 +++++++++++++++++++----- 1 file changed, 134 insertions(+), 35 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index aea56b6fbf17..de8604450fb9 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -284,10 +284,10 @@ struct exynos_dsi_driver_data { struct exynos_dsi_plat_data { enum exynos_dsi_type hw_type; + const struct exynos_dsim_host_ops *host_ops; }; struct exynos_dsi { - struct drm_encoder encoder; struct mipi_dsi_host dsi_host; struct drm_bridge bridge; struct drm_bridge *out_bridge; @@ -317,6 +317,19 @@ struct exynos_dsi { const struct exynos_dsi_driver_data *driver_data; const struct exynos_dsi_plat_data *plat_data; + + void *priv; +}; + +struct exynos_dsim_host_ops { + int (*register_host)(struct exynos_dsi *dsim); + void (*unregister_host)(struct exynos_dsi *dsim); + int (*attach)(struct exynos_dsi *dsim, struct mipi_dsi_device *device); + int (*detach)(struct exynos_dsi *dsim, struct mipi_dsi_device *device); +}; + +struct exynos_dsi_enc { + struct drm_encoder encoder; }; #define host_to_dsi(host) container_of(host, struct exynos_dsi, dsi_host) @@ -1321,7 +1334,8 @@ static irqreturn_t exynos_dsi_irq(int irq, void *dev_id) static irqreturn_t exynos_dsi_te_irq_handler(int irq, void *dev_id) { struct exynos_dsi *dsi = (struct exynos_dsi *)dev_id; - struct drm_encoder *encoder = &dsi->encoder; + struct exynos_dsi_enc *dsi_enc = dsi->priv; + struct drm_encoder *encoder = &dsi_enc->encoder; if (dsi->state & DSIM_STATE_VIDOUT_AVAILABLE) exynos_drm_crtc_te_handler(encoder->crtc); @@ -1590,9 +1604,8 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host, struct mipi_dsi_device *device) { struct exynos_dsi *dsi = host_to_dsi(host); + const struct exynos_dsi_plat_data *pdata = dsi->plat_data; struct device *dev = dsi->dev; - struct drm_encoder *encoder = &dsi->encoder; - struct drm_device *drm = encoder->dev; struct drm_bridge *bridge; struct drm_panel *panel; int ret; @@ -1617,35 +1630,15 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host, drm_bridge_add(&dsi->bridge); - drm_bridge_attach(encoder, &dsi->bridge, - list_first_entry_or_null(&encoder->bridge_chain, - struct drm_bridge, - chain_node), 0); - - /* - * This is a temporary solution and should be made by more generic way. - * - * If attached panel device is for command mode one, dsi should register - * TE interrupt handler. - */ - if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO)) { - ret = exynos_dsi_register_te_irq(dsi, &device->dev); - if (ret) + if (pdata->host_ops && pdata->host_ops->attach) { + ret = pdata->host_ops->attach(dsi, device); + if (ret < 0) return ret; } - mutex_lock(&drm->mode_config.mutex); - dsi->lanes = device->lanes; dsi->format = device->format; dsi->mode_flags = device->mode_flags; - exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD)->i80_mode = - !(dsi->mode_flags & MIPI_DSI_MODE_VIDEO); - - mutex_unlock(&drm->mode_config.mutex); - - if (drm->mode_config.poll_enabled) - drm_kms_helper_hotplug_event(drm); return 0; } @@ -1654,12 +1647,14 @@ static int exynos_dsi_host_detach(struct mipi_dsi_host *host, struct mipi_dsi_device *device) { struct exynos_dsi *dsi = host_to_dsi(host); - struct drm_device *drm = dsi->encoder.dev; - - if (drm->mode_config.poll_enabled) - drm_kms_helper_hotplug_event(drm); + const struct exynos_dsi_plat_data *pdata = dsi->plat_data; + int ret; - exynos_dsi_unregister_te_irq(dsi); + if (pdata->host_ops && pdata->host_ops->detach) { + ret = pdata->host_ops->detach(dsi, device); + if (ret < 0) + return ret; + } drm_bridge_remove(&dsi->bridge); @@ -1733,11 +1728,67 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi) return 0; } +static int _exynos_dsi_host_attach(struct exynos_dsi *dsim, + struct mipi_dsi_device *device) +{ + struct exynos_dsi_enc *dsi_enc = dsim->priv; + struct drm_encoder *encoder = &dsi_enc->encoder; + struct drm_device *drm = encoder->dev; + int ret; + + drm_bridge_attach(encoder, &dsim->bridge, + list_first_entry_or_null(&encoder->bridge_chain, + struct drm_bridge, + chain_node), 0); + + /* + * This is a temporary solution and should be made by more generic way. + * + * If attached panel device is for command mode one, dsi should register + * TE interrupt handler. + */ + if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO)) { + ret = exynos_dsi_register_te_irq(dsim, &device->dev); + if (ret) + return ret; + } + + mutex_lock(&drm->mode_config.mutex); + + dsim->lanes = device->lanes; + dsim->format = device->format; + dsim->mode_flags = device->mode_flags; + exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD)->i80_mode = + !(dsim->mode_flags & MIPI_DSI_MODE_VIDEO); + + mutex_unlock(&drm->mode_config.mutex); + + if (drm->mode_config.poll_enabled) + drm_kms_helper_hotplug_event(drm); + + return 0; +} + +static int _exynos_dsi_host_detach(struct exynos_dsi *dsim, + struct mipi_dsi_device *device) +{ + struct exynos_dsi_enc *dsi_enc = dsim->priv; + struct drm_device *drm = dsi_enc->encoder.dev; + + if (drm->mode_config.poll_enabled) + drm_kms_helper_hotplug_event(drm); + + exynos_dsi_unregister_te_irq(dsim); + + return 0; +} + static int exynos_dsi_bind(struct device *dev, struct device *master, void *data) { struct exynos_dsi *dsi = dev_get_drvdata(dev); - struct drm_encoder *encoder = &dsi->encoder; + struct exynos_dsi_enc *dsi_enc = dsi->priv; + struct drm_encoder *encoder = &dsi_enc->encoder; struct drm_device *drm_dev = data; int ret; @@ -1755,7 +1806,7 @@ static void exynos_dsi_unbind(struct device *dev, struct device *master, { struct exynos_dsi *dsi = dev_get_drvdata(dev); - exynos_dsi_atomic_disable(&dsi->bridge, NULL); + dsi->bridge.funcs->atomic_disable(&dsi->bridge, NULL); mipi_dsi_host_unregister(&dsi->dsi_host); } @@ -1765,6 +1816,40 @@ static const struct component_ops exynos_dsi_component_ops = { .unbind = exynos_dsi_unbind, }; +static int exynos_dsi_register_host(struct exynos_dsi *dsim) +{ + struct exynos_dsi_enc *dsi_enc; + + dsi_enc = devm_kzalloc(dsim->dev, sizeof(*dsi_enc), GFP_KERNEL); + if (!dsi_enc) + return -ENOMEM; + + dsim->priv = dsi_enc; + dsim->bridge.pre_enable_prev_first = true; + + return component_add(dsim->dev, &exynos_dsi_component_ops); +} + +static void exynos_dsi_unregister_host(struct exynos_dsi *dsim) +{ + component_del(dsim->dev, &exynos_dsi_component_ops); +} + +static int generic_dsim_register_host(struct exynos_dsi *dsim) +{ + return mipi_dsi_host_register(&dsim->dsi_host); +} + +static void generic_dsim_unregister_host(struct exynos_dsi *dsim) +{ + mipi_dsi_host_unregister(&dsim->dsi_host); +} + +static const struct exynos_dsim_host_ops generic_dsim_host_ops = { + .register_host = generic_dsim_register_host, + .unregister_host = generic_dsim_unregister_host, +}; + static const struct drm_bridge_timings dsim_bridge_timings_de_low = { .input_bus_flags = DRM_BUS_FLAG_DE_LOW, }; @@ -1859,7 +1944,9 @@ static int exynos_dsi_probe(struct platform_device *pdev) if (dsi->plat_data->hw_type == DSIM_TYPE_IMX8MM) dsi->bridge.timings = &dsim_bridge_timings_de_low; - ret = component_add(dev, &exynos_dsi_component_ops); + if (dsi->plat_data->host_ops && dsi->plat_data->host_ops->register_host) + ret = dsi->plat_data->host_ops->register_host(dsi); + if (ret) goto err_disable_runtime; @@ -1950,24 +2037,36 @@ static const struct dev_pm_ops exynos_dsi_pm_ops = { pm_runtime_force_resume) }; +static const struct exynos_dsim_host_ops exynos_dsi_host_ops = { + .register_host = exynos_dsi_register_host, + .unregister_host = exynos_dsi_unregister_host, + .attach = _exynos_dsi_host_attach, + .detach = _exynos_dsi_host_detach, +}; + static const struct exynos_dsi_plat_data exynos3250_dsi_pdata = { .hw_type = DSIM_TYPE_EXYNOS3250, + .host_ops = &exynos_dsi_host_ops, }; static const struct exynos_dsi_plat_data exynos4210_dsi_pdata = { .hw_type = DSIM_TYPE_EXYNOS4210, + .host_ops = &exynos_dsi_host_ops, }; static const struct exynos_dsi_plat_data exynos5410_dsi_pdata = { .hw_type = DSIM_TYPE_EXYNOS5410, + .host_ops = &exynos_dsi_host_ops, }; static const struct exynos_dsi_plat_data exynos5422_dsi_pdata = { .hw_type = DSIM_TYPE_EXYNOS5422, + .host_ops = &exynos_dsi_host_ops, }; static const struct exynos_dsi_plat_data exynos5433_dsi_pdata = { .hw_type = DSIM_TYPE_EXYNOS5433, + .host_ops = &exynos_dsi_host_ops, }; static const struct of_device_id exynos_dsi_of_match[] = {