From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752245AbeDSJba (ORCPT ); Thu, 19 Apr 2018 05:31:30 -0400 Received: from relay3-d.mail.gandi.net ([217.70.183.195]:55805 "EHLO relay3-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751047AbeDSJb1 (ORCPT ); Thu, 19 Apr 2018 05:31:27 -0400 X-Originating-IP: 2.224.242.101 From: Jacopo Mondi To: architt@codeaurora.org, a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com, airlied@linux.ie Cc: Jacopo Mondi , daniel@ffwll.ch, peda@axentia.se, linux-renesas-soc@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/8] drm: bridge: Add support for static image formats Date: Thu, 19 Apr 2018 11:31:02 +0200 Message-Id: <1524130269-32688-2-git-send-email-jacopo+renesas@jmondi.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1524130269-32688-1-git-send-email-jacopo+renesas@jmondi.org> References: <1524130269-32688-1-git-send-email-jacopo+renesas@jmondi.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for storing image format information in DRM bridges with associated helper function. This patch replicates for bridges what 'drm_display_info_set_bus_formats()' is for connectors. Signed-off-by: Jacopo Mondi --- drivers/gpu/drm/drm_bridge.c | 30 ++++++++++++++++++++++++++++++ include/drm/drm_bridge.h | 8 ++++++++ 2 files changed, 38 insertions(+) diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 1638bfe..e2ad098 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -157,6 +157,36 @@ void drm_bridge_detach(struct drm_bridge *bridge) } /** + * drm_bridge_set_bus_formats() - set bridge supported image formats + * @bridge: the bridge to set image formats in + * @formats: array of MEDIA_BUS_FMT\_ supported image formats + * @num_formats: number of elements in the @formats array + * + * Store a list of supported image formats in a bridge. + * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for + * a full list of available formats. + */ +int drm_bridge_set_bus_formats(struct drm_bridge *bridge, const u32 *formats, + unsigned int num_formats) +{ + u32 *fmts; + + if (!formats || !num_formats) + return -EINVAL; + + fmts = kmemdup(formats, sizeof(*formats) * num_formats, GFP_KERNEL); + if (!fmts) + return -ENOMEM; + + kfree(bridge->bus_formats); + bridge->bus_formats = fmts; + bridge->num_bus_formats = num_formats; + + return 0; +} +EXPORT_SYMBOL(drm_bridge_set_bus_formats); + +/** * DOC: bridge callbacks * * The &drm_bridge_funcs ops are populated by the bridge driver. The DRM diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 3270fec..6b3648c 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -258,6 +258,9 @@ struct drm_bridge_timings { * @encoder: encoder to which this bridge is connected * @next: the next bridge in the encoder chain * @of_node: device node pointer to the bridge + * @bus_formats: wire image formats. Array of @num_bus_formats MEDIA_BUS_FMT\_ + * elements + * @num_bus_formats: size of @bus_formats array * @list: to keep track of all added bridges * @timings: the timing specification for the bridge, if any (may * be NULL) @@ -271,6 +274,9 @@ struct drm_bridge { #ifdef CONFIG_OF struct device_node *of_node; #endif + const u32 *bus_formats; + unsigned int num_bus_formats; + struct list_head list; const struct drm_bridge_timings *timings; @@ -296,6 +302,8 @@ void drm_bridge_mode_set(struct drm_bridge *bridge, struct drm_display_mode *adjusted_mode); void drm_bridge_pre_enable(struct drm_bridge *bridge); void drm_bridge_enable(struct drm_bridge *bridge); +int drm_bridge_set_bus_formats(struct drm_bridge *bridge, const u32 *fmts, + unsigned int num_fmts); #ifdef CONFIG_DRM_PANEL_BRIDGE struct drm_bridge *drm_panel_bridge_add(struct drm_panel *panel, -- 2.7.4