From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maciej Purski Subject: [PATCH 04/12] drm/exynos: add non-panel path to exynos_dsi_enable() Date: Mon, 28 May 2018 11:47:08 +0200 Message-ID: <1527500833-16005-5-git-send-email-m.purski@samsung.com> References: <1527500833-16005-1-git-send-email-m.purski@samsung.com> Return-path: In-reply-to: <1527500833-16005-1-git-send-email-m.purski@samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: David Airlie , Rob Herring , Mark Rutland , Thierry Reding , Kukjin Kim , Krzysztof Kozlowski , Archit Taneja , Andrzej Hajda , Laurent Pinchart , Inki Dae , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Marek Szyprowski , Bartlomiej Zolnierkiewicz , Maciej Purski List-Id: devicetree@vger.kernel.org As DSIM can now have a bridge connected as a peripheral, it should be possible to successfully enable exynos_dsi, when there is no panel provided. Signed-off-by: Maciej Purski --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 8957faf..7d92e50 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1382,27 +1382,26 @@ static void exynos_dsi_enable(struct drm_encoder *encoder) if (dsi->state & DSIM_STATE_ENABLED) return; - pm_runtime_get_sync(dsi->dev); - - dsi->state |= DSIM_STATE_ENABLED; - - ret = drm_panel_prepare(dsi->panel); - if (ret < 0) { - dsi->state &= ~DSIM_STATE_ENABLED; - return; + if (dsi->panel) { + ret = drm_panel_prepare(dsi->panel); + if (ret < 0) { + return; + } } exynos_dsi_set_display_mode(dsi); exynos_dsi_set_display_enable(dsi, true); - ret = drm_panel_enable(dsi->panel); - if (ret < 0) { - dsi->state &= ~DSIM_STATE_ENABLED; - exynos_dsi_set_display_enable(dsi, false); - drm_panel_unprepare(dsi->panel); - return; + if (dsi->panel) { + ret = drm_panel_enable(dsi->panel); + if (ret < 0) { + exynos_dsi_set_display_enable(dsi, false); + drm_panel_unprepare(dsi->panel); + return; + } } + dsi->state |= DSIM_STATE_ENABLED; dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE; } -- 2.7.4