Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759907AbdCVN27 (ORCPT ); Wed, 22 Mar 2017 09:28:59 -0400 Received: from mail-ot0-f195.google.com ([74.125.82.195]:36289 "EHLO mail-ot0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934571AbdCVN0W (ORCPT ); Wed, 22 Mar 2017 09:26:22 -0400 From: Rob Herring To: David Airlie , Daniel Vetter , Sean Paul Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Boris Brezillon , Archit Taneja , Jingoo Han , Inki Dae , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Kukjin Kim , Krzysztof Kozlowski , Javier Martinez Canillas , Stefan Agner , Alison Wang , Xinliang Liu , Rongrong Zou , Xinwei Kong , Chen Feng , Philipp Zabel , CK Hu , Matthias Brugger , Marek Vasut , Mark Yao , Heiko Stuebner , Maxime Ripard , Chen-Yu Tsai , Liviu Dudau , Mali DP Maintainers , Neil Armstrong , Carlo Caione , Kevin Hilman , Rob Clark , Jyri Sarha , Tomi Valkeinen , Eric Anholt , Russell King Subject: [PATCH v3 4/5] drm: convert drivers to use drm_of_find_panel_or_bridge Date: Wed, 22 Mar 2017 08:26:07 -0500 Message-Id: <20170322132608.17353-5-robh@kernel.org> X-Mailer: git-send-email 2.10.1 In-Reply-To: <20170322132608.17353-1-robh@kernel.org> References: <20170322132608.17353-1-robh@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 26386 Lines: 890 Similar to the previous commit, convert drivers open coding OF graph parsing to use drm_of_find_panel_or_bridge instead. This changes some error messages to debug messages (in the graph core). Graph connections are often "no connects" depending on the particular board, so we want to avoid spurious messages. Plus the kernel is not a DT validator. Signed-off-by: Rob Herring Reviewed-by: Archit Taneja --- v3: - rebase to v4.11-rc2 - rework atmel to support 1 to N connections drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c | 73 ++++++------------- drivers/gpu/drm/bridge/nxp-ptn3460.c | 16 ++--- drivers/gpu/drm/bridge/parade-ps8622.c | 16 ++--- drivers/gpu/drm/bridge/tc358767.c | 27 +------ drivers/gpu/drm/exynos/exynos_dp.c | 35 ++++----- drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c | 39 +++------- drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c | 27 ++----- drivers/gpu/drm/imx/imx-ldb.c | 27 ++----- drivers/gpu/drm/imx/parallel-display.c | 36 ++-------- drivers/gpu/drm/mediatek/mtk_dsi.c | 23 ++---- drivers/gpu/drm/mxsfb/mxsfb_out.c | 40 ++--------- drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 26 ++----- drivers/gpu/drm/sun4i/sun4i_rgb.c | 11 +-- drivers/gpu/drm/sun4i/sun4i_tcon.c | 90 ++---------------------- 14 files changed, 92 insertions(+), 394 deletions(-) diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c index e7799b6ee829..f987b4572d4a 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c @@ -22,7 +22,7 @@ #include #include -#include +#include #include "atmel_hlcdc_dc.h" @@ -152,29 +152,11 @@ static const struct drm_connector_funcs atmel_hlcdc_panel_connector_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, }; -static int atmel_hlcdc_check_endpoint(struct drm_device *dev, - const struct of_endpoint *ep) -{ - struct device_node *np; - void *obj; - - np = of_graph_get_remote_port_parent(ep->local_node); - - obj = of_drm_find_panel(np); - if (!obj) - obj = of_drm_find_bridge(np); - - of_node_put(np); - - return obj ? 0 : -EPROBE_DEFER; -} - static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, - const struct of_endpoint *ep) + const struct device_node *np) { struct atmel_hlcdc_dc *dc = dev->dev_private; struct atmel_hlcdc_rgb_output *output; - struct device_node *np; struct drm_panel *panel; struct drm_bridge *bridge; int ret; @@ -195,13 +177,11 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, output->encoder.possible_crtcs = 0x1; - np = of_graph_get_remote_port_parent(ep->local_node); - - ret = -EPROBE_DEFER; + ret = drm_of_find_panel_or_bridge(np, 0, 0, &panel, &bridge); + if (ret) + return ret; - panel = of_drm_find_panel(np); if (panel) { - of_node_put(np); output->connector.dpms = DRM_MODE_DPMS_OFF; output->connector.polled = DRM_CONNECTOR_POLL_CONNECT; drm_connector_helper_add(&output->connector, @@ -226,9 +206,6 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, return 0; } - bridge = of_drm_find_bridge(np); - of_node_put(np); - if (bridge) { ret = drm_bridge_attach(&output->encoder, bridge, NULL); if (!ret) @@ -243,31 +220,23 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int atmel_hlcdc_create_outputs(struct drm_device *dev) { - struct device_node *ep_np = NULL; - struct of_endpoint ep; - int ret; - - for_each_endpoint_of_node(dev->dev->of_node, ep_np) { - ret = of_graph_parse_endpoint(ep_np, &ep); - if (!ret) - ret = atmel_hlcdc_check_endpoint(dev, &ep); - - if (ret) { - of_node_put(ep_np); - return ret; - } - } - - for_each_endpoint_of_node(dev->dev->of_node, ep_np) { - ret = of_graph_parse_endpoint(ep_np, &ep); - if (!ret) - ret = atmel_hlcdc_attach_endpoint(dev, &ep); - - if (ret) { - of_node_put(ep_np); + struct device_node *remote; + int ret, endpoint = 0; + + while (true) { + /* Loop thru possible multiple connections to the output */ + remote = of_graph_get_remote_node(dev->dev->of_node, 0, + endpoint++); + if (!remote) + break; + + ret = atmel_hlcdc_attach_endpoint(dev, remote); + of_node_put(remote); + if (ret) return ret; - } } - return 0; + if (!endpoint) + return -ENODEV; + return ret; } diff --git a/drivers/gpu/drm/bridge/nxp-ptn3460.c b/drivers/gpu/drm/bridge/nxp-ptn3460.c index 27f98c518dde..351704390d02 100644 --- a/drivers/gpu/drm/bridge/nxp-ptn3460.c +++ b/drivers/gpu/drm/bridge/nxp-ptn3460.c @@ -20,8 +20,8 @@ #include #include #include -#include +#include #include #include "drm_crtc.h" @@ -292,7 +292,6 @@ static int ptn3460_probe(struct i2c_client *client, { struct device *dev = &client->dev; struct ptn3460_bridge *ptn_bridge; - struct device_node *endpoint, *panel_node; int ret; ptn_bridge = devm_kzalloc(dev, sizeof(*ptn_bridge), GFP_KERNEL); @@ -300,16 +299,9 @@ static int ptn3460_probe(struct i2c_client *client, return -ENOMEM; } - endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); - if (endpoint) { - panel_node = of_graph_get_remote_port_parent(endpoint); - if (panel_node) { - ptn_bridge->panel = of_drm_find_panel(panel_node); - of_node_put(panel_node); - if (!ptn_bridge->panel) - return -EPROBE_DEFER; - } - } + ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0, &ptn_bridge->panel, NULL); + if (ret) + return ret; ptn_bridge->client = client; diff --git a/drivers/gpu/drm/bridge/parade-ps8622.c b/drivers/gpu/drm/bridge/parade-ps8622.c index ac8cc5b50d9f..1dcec3b97e67 100644 --- a/drivers/gpu/drm/bridge/parade-ps8622.c +++ b/drivers/gpu/drm/bridge/parade-ps8622.c @@ -22,10 +22,10 @@ #include #include #include -#include #include #include +#include #include #include "drmP.h" @@ -536,7 +536,6 @@ static int ps8622_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; - struct device_node *endpoint, *panel_node; struct ps8622_bridge *ps8622; int ret; @@ -544,16 +543,9 @@ static int ps8622_probe(struct i2c_client *client, if (!ps8622) return -ENOMEM; - endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); - if (endpoint) { - panel_node = of_graph_get_remote_port_parent(endpoint); - if (panel_node) { - ps8622->panel = of_drm_find_panel(panel_node); - of_node_put(panel_node); - if (!ps8622->panel) - return -EPROBE_DEFER; - } - } + ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0, &ps8622->panel, NULL); + if (ret) + return ret; ps8622->client = client; diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index de9ffb49e9f6..5c26488e7a2d 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1244,7 +1244,6 @@ static const struct regmap_config tc_regmap_config = { static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; - struct device_node *ep; struct tc_data *tc; int ret; @@ -1255,29 +1254,9 @@ static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) tc->dev = dev; /* port@2 is the output port */ - ep = of_graph_get_endpoint_by_regs(dev->of_node, 2, -1); - if (ep) { - struct device_node *remote; - - remote = of_graph_get_remote_port_parent(ep); - if (!remote) { - dev_warn(dev, "endpoint %s not connected\n", - ep->full_name); - of_node_put(ep); - return -ENODEV; - } - of_node_put(ep); - tc->panel = of_drm_find_panel(remote); - if (tc->panel) { - dev_dbg(dev, "found panel %s\n", remote->full_name); - } else { - dev_dbg(dev, "waiting for panel %s\n", - remote->full_name); - of_node_put(remote); - return -EPROBE_DEFER; - } - of_node_put(remote); - } + ret = drm_of_find_panel_or_bridge(dev->of_node, 2, 0, &tc->panel, NULL); + if (ret) + return ret; /* Shut down GPIO is optional */ tc->sd_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH); diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c index 1ef0be338b85..a269f439e742 100644 --- a/drivers/gpu/drm/exynos/exynos_dp.c +++ b/drivers/gpu/drm/exynos/exynos_dp.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -212,8 +213,11 @@ static const struct component_ops exynos_dp_ops = { static int exynos_dp_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *np = NULL, *endpoint = NULL; + struct device_node *np; struct exynos_dp_device *dp; + struct drm_panel *panel; + struct drm_bridge *bridge; + int ret; dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device), GFP_KERNEL); @@ -237,28 +241,13 @@ static int exynos_dp_probe(struct platform_device *pdev) goto out; } - endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); - if (endpoint) { - np = of_graph_get_remote_port_parent(endpoint); - if (np) { - /* The remote port can be either a panel or a bridge */ - dp->plat_data.panel = of_drm_find_panel(np); - if (!dp->plat_data.panel) { - dp->ptn_bridge = of_drm_find_bridge(np); - if (!dp->ptn_bridge) { - of_node_put(np); - return -EPROBE_DEFER; - } - } - of_node_put(np); - } else { - DRM_ERROR("no remote endpoint device node found.\n"); - return -EINVAL; - } - } else { - DRM_ERROR("no port endpoint subnode found.\n"); - return -EINVAL; - } + ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0, &panel, &bridge); + if (ret) + return ret; + + /* The remote port can be either a panel or a bridge */ + dp->plat_data.panel = panel; + dp->ptn_bridge = bridge; out: return component_add(&pdev->dev, &exynos_dp_ops); diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c index c3651456c963..511d68e22452 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include "fsl_dcu_drm_drv.h" @@ -141,28 +142,6 @@ static int fsl_dcu_attach_panel(struct fsl_dcu_drm_device *fsl_dev, return ret; } -static int fsl_dcu_attach_endpoint(struct fsl_dcu_drm_device *fsl_dev, - const struct of_endpoint *ep) -{ - struct drm_bridge *bridge; - struct device_node *np; - - np = of_graph_get_remote_port_parent(ep->local_node); - - fsl_dev->connector.panel = of_drm_find_panel(np); - if (fsl_dev->connector.panel) { - of_node_put(np); - return fsl_dcu_attach_panel(fsl_dev, fsl_dev->connector.panel); - } - - bridge = of_drm_find_bridge(np); - of_node_put(np); - if (!bridge) - return -ENODEV; - - return drm_bridge_attach(&fsl_dev->encoder, bridge, NULL); -} - int fsl_dcu_create_outputs(struct fsl_dcu_drm_device *fsl_dev) { struct of_endpoint ep; @@ -179,14 +158,14 @@ int fsl_dcu_create_outputs(struct fsl_dcu_drm_device *fsl_dev) return fsl_dcu_attach_panel(fsl_dev, fsl_dev->connector.panel); } - ep_node = of_graph_get_next_endpoint(fsl_dev->np, NULL); - if (!ep_node) - return -ENODEV; - - ret = of_graph_parse_endpoint(ep_node, &ep); - of_node_put(ep_node); + ret = drm_of_find_panel_or_bridge(fsl_dev->np, 0, 0, &panel, &bridge); if (ret) - return -ENODEV; + return ret; - return fsl_dcu_attach_endpoint(fsl_dev, &ep); + if (panel) { + fsl_dev->connector.panel = panel; + return fsl_dcu_attach_panel(fsl_dev, panel); + } + + return drm_bridge_attach(&fsl_dev->encoder, bridge, NULL); } diff --git a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c index 1737e98bc10a..5abc69c9630f 100644 --- a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c +++ b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c @@ -17,7 +17,6 @@ #include #include -#include #include #include @@ -754,34 +753,16 @@ static int dsi_parse_dt(struct platform_device *pdev, struct dw_dsi *dsi) { struct dsi_hw_ctx *ctx = dsi->ctx; struct device_node *np = pdev->dev.of_node; - struct device_node *endpoint, *bridge_node; - struct drm_bridge *bridge; struct resource *res; + int ret; /* * Get the endpoint node. In our case, dsi has one output port1 * to which the external HDMI bridge is connected. */ - endpoint = of_graph_get_endpoint_by_regs(np, 1, -1); - if (!endpoint) { - DRM_ERROR("no valid endpoint node\n"); - return -ENODEV; - } - of_node_put(endpoint); - - bridge_node = of_graph_get_remote_port_parent(endpoint); - if (!bridge_node) { - DRM_ERROR("no valid bridge node\n"); - return -ENODEV; - } - of_node_put(bridge_node); - - bridge = of_drm_find_bridge(bridge_node); - if (!bridge) { - DRM_INFO("wait for external HDMI bridge driver.\n"); - return -EPROBE_DEFER; - } - dsi->bridge = bridge; + ret = drm_of_find_panel_or_bridge(np, 0, 0, NULL, &dsi->bridge); + if (ret) + return ret; ctx->pclk = devm_clk_get(&pdev->dev, "pclk"); if (IS_ERR(ctx->pclk)) { diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c index 88cd11d30134..8fb801fab039 100644 --- a/drivers/gpu/drm/imx/imx-ldb.c +++ b/drivers/gpu/drm/imx/imx-ldb.c @@ -647,7 +647,6 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data) for_each_child_of_node(np, child) { struct imx_ldb_channel *channel; - struct device_node *ep; int bus_format; ret = of_property_read_u32(child, "reg", &i); @@ -671,27 +670,11 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data) * The output port is port@4 with an external 4-port mux or * port@2 with the internal 2-port mux. */ - ep = of_graph_get_endpoint_by_regs(child, - imx_ldb->lvds_mux ? 4 : 2, - -1); - if (ep) { - struct device_node *remote; - - remote = of_graph_get_remote_port_parent(ep); - of_node_put(ep); - if (remote) { - channel->panel = of_drm_find_panel(remote); - channel->bridge = of_drm_find_bridge(remote); - } else - return -EPROBE_DEFER; - of_node_put(remote); - - if (!channel->panel && !channel->bridge) { - dev_err(dev, "panel/bridge not found: %s\n", - remote->full_name); - return -EPROBE_DEFER; - } - } + ret = drm_of_find_panel_or_bridge(child, + imx_ldb->lvds_mux ? 4 : 2, 0, + &channel->panel, &channel->bridge); + if (ret) + return ret; /* panel ddc only if there is no bridge */ if (!channel->bridge) { diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c index d5c06fd89f90..636031a30e17 100644 --- a/drivers/gpu/drm/imx/parallel-display.c +++ b/drivers/gpu/drm/imx/parallel-display.c @@ -19,10 +19,10 @@ #include #include #include +#include #include #include #include