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Fri, 14 Feb 2020 07:24:48 -0500 (EST) From: Maxime Ripard To: Chen-Yu Tsai , Maxime Ripard , dri-devel@lists.freedesktop.org Subject: [PATCH 3/4] drm/panel: lvds: Support data and clock polarity flags Date: Fri, 14 Feb 2020 13:24:40 +0100 Message-Id: X-Mailer: git-send-email 2.24.1 In-Reply-To: References: MIME-Version: 1.0 X-Mailman-Approved-At: Mon, 17 Feb 2020 08:20:47 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, David Airlie , Sam Ravnborg , Rob Herring , Sean Paul , Maxime Ripard , Thierry Reding , Daniel Vetter , Frank Rowand , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add device tree properties to the panel-lvds driver to set the bus flags properly. Signed-off-by: Maxime Ripard --- drivers/gpu/drm/panel/panel-lvds.c | 25 ++++++++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c index 5ce3f4a2b7a1..c0d6dcd9e9fc 100644 --- a/drivers/gpu/drm/panel/panel-lvds.c +++ b/drivers/gpu/drm/panel/panel-lvds.c @@ -31,6 +31,8 @@ struct panel_lvds { unsigned int height; struct videomode video_mode; unsigned int bus_format; + bool clk_active_low; + bool data_active_low; bool data_mirror; struct regulator *supply; @@ -83,6 +85,7 @@ static int panel_lvds_get_modes(struct drm_panel *panel, { struct panel_lvds *lvds = to_panel_lvds(panel); struct drm_display_mode *mode; + unsigned int flags = 0; mode = drm_mode_create(connector->dev); if (!mode) @@ -96,9 +99,23 @@ static int panel_lvds_get_modes(struct drm_panel *panel, connector->display_info.height_mm = lvds->height; drm_display_info_set_bus_formats(&connector->display_info, &lvds->bus_format, 1); - connector->display_info.bus_flags = lvds->data_mirror - ? DRM_BUS_FLAG_DATA_LSB_TO_MSB - : DRM_BUS_FLAG_DATA_MSB_TO_LSB; + + if (lvds->data_mirror) + flags |= DRM_BUS_FLAG_DATA_LSB_TO_MSB; + else + flags |= DRM_BUS_FLAG_DATA_MSB_TO_LSB; + + if (lvds->clk_active_low) + flags |= DRM_BUS_FLAG_PIXDATA_NEGEDGE; + else + flags |= DRM_BUS_FLAG_PIXDATA_POSEDGE; + + if (lvds->data_active_low) + flags |= DRM_BUS_FLAG_DATA_LOW; + else + flags |= DRM_BUS_FLAG_DATA_HIGH; + + connector->display_info.bus_flags = flags; return 1; } @@ -159,6 +176,8 @@ static int panel_lvds_parse_dt(struct panel_lvds *lvds) return -EINVAL; } + lvds->clk_active_low = of_property_read_bool(np, "clock-active-low"); + lvds->data_active_low = of_property_read_bool(np, "data-active-low"); lvds->data_mirror = of_property_read_bool(np, "data-mirror"); return 0; -- git-series 0.9.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel