From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754340AbaKRNq2 (ORCPT ); Tue, 18 Nov 2014 08:46:28 -0500 Received: from down.free-electrons.com ([37.187.137.238]:58352 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754075AbaKRNqZ (ORCPT ); Tue, 18 Nov 2014 08:46:25 -0500 From: Boris Brezillon To: David Airlie , dri-devel@lists.freedesktop.org, Thierry Reding Cc: linux-kernel@vger.kernel.org, Mauro Carvalho Chehab , Hans Verkuil , Laurent Pinchart , linux-media@vger.kernel.org, Boris Brezillon Subject: [PATCH v3 1/3] drm: add bus_formats and nbus_formats fields to drm_display_info Date: Tue, 18 Nov 2014 14:46:18 +0100 Message-Id: <1416318380-20122-2-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1416318380-20122-1-git-send-email-boris.brezillon@free-electrons.com> References: <1416318380-20122-1-git-send-email-boris.brezillon@free-electrons.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add bus_formats and nbus_formats fields and drm_display_info_set_bus_formats helper function to specify the bus formats supported by a given display. This information can be used by display controller drivers to configure the output interface appropriately (i.e. RGB565, RGB666 or RGB888 on raw RGB or LVDS busses). Signed-off-by: Boris Brezillon --- drivers/gpu/drm/drm_crtc.c | 30 ++++++++++++++++++++++++++++++ include/drm/drm_crtc.h | 7 +++++++ 2 files changed, 37 insertions(+) diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index e79c8d3..17e3acf 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -763,6 +763,36 @@ static void drm_mode_remove(struct drm_connector *connector, drm_mode_destroy(connector->dev, mode); } +/* + * drm_display_info_set_bus_formats - set the supported bus formats + * @info: display info to store bus formats in + * @fmts: array containing the supported bus formats + * @nfmts: the number of entries in the fmts array + * + * Store the suppported bus formats in display info structure. + */ +int drm_display_info_set_bus_formats(struct drm_display_info *info, const u32 *fmts, + unsigned int num_fmts) +{ + u32 *formats = NULL; + + if (!fmts && num_fmts) + return -EINVAL; + + if (fmts && num_fmts) { + formats = kmemdup(fmts, sizeof(*fmts) * num_fmts, GFP_KERNEL); + if (!formats) + return -ENOMEM; + } + + kfree(info->bus_formats); + info->bus_formats = formats; + info->num_bus_formats = num_fmts; + + return 0; +} +EXPORT_SYMBOL(drm_display_info_set_bus_formats); + /** * drm_connector_get_cmdline_mode - reads the user's cmdline mode * @connector: connector to quwery diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index c40070a..2e0a3e8 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include @@ -130,6 +131,9 @@ struct drm_display_info { enum subpixel_order subpixel_order; u32 color_formats; + const u32 *bus_formats; + int num_bus_formats; + /* Mask of supported hdmi deep color modes */ u8 edid_hdmi_dc_modes; @@ -982,6 +986,9 @@ extern int drm_mode_connector_set_path_property(struct drm_connector *connector, extern int drm_mode_connector_update_edid_property(struct drm_connector *connector, struct edid *edid); +extern int drm_display_info_set_bus_formats(struct drm_display_info *info, + const u32 *fmts, unsigned int nfmts); + static inline bool drm_property_type_is(struct drm_property *property, uint32_t type) { -- 1.9.1