And use it in drivers accessing the bridge->next field directly. This is part of our attempt to make the bridge chain a double-linked list based on the generic list helpers.
Signed-off-by: Boris Brezillon <[email protected]> --- Changes in v3: * Inline drm_bridge_chain_get_next_bridge() (Suggested by Laurent) Changes in v2: * Kill the last/first helpers (they're not really needed) * Drop the !bridge || !bridge->encoder test --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 3 ++- drivers/gpu/drm/mediatek/mtk_hdmi.c | 6 ++++-- drivers/gpu/drm/omapdrm/omap_drv.c | 4 ++-- drivers/gpu/drm/omapdrm/omap_encoder.c | 3 ++- drivers/gpu/drm/vc4/vc4_dsi.c | 4 +++- include/drm/drm_bridge.h | 13 +++++++++++++ 6 files changed, 26 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 3915f50b005e..005c67894b78 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1593,9 +1593,10 @@ static int exynos_dsi_host_detach(struct mipi_dsi_host *host, struct mipi_dsi_device *device) { struct exynos_dsi *dsi = host_to_dsi(host); - struct drm_bridge *out_bridge = dsi->bridge.next; struct drm_device *drm = dsi->encoder.dev; + struct drm_bridge *out_bridge; + out_bridge = drm_bridge_chain_get_next_bridge(&dsi->bridge); if (dsi->panel) { mutex_lock(&drm->mode_config.mutex); exynos_dsi_disable(&dsi->bridge); diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index ea68b5adccbe..cfaa5aab8876 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1238,16 +1238,18 @@ static int mtk_hdmi_conn_mode_valid(struct drm_connector *conn, struct drm_display_mode *mode) { struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); + struct drm_bridge *next_bridge; dev_dbg(hdmi->dev, "xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n", mode->hdisplay, mode->vdisplay, mode->vrefresh, !!(mode->flags & DRM_MODE_FLAG_INTERLACE), mode->clock * 1000); - if (hdmi->bridge.next) { + next_bridge = drm_bridge_chain_get_next_bridge(&hdmi->bridge); + if (next_bridge) { struct drm_display_mode adjusted_mode; drm_mode_copy(&adjusted_mode, mode); - if (!drm_bridge_chain_mode_fixup(hdmi->bridge.next, mode, + if (!drm_bridge_chain_mode_fixup(next_bridge, mode, &adjusted_mode)) return MODE_BAD; } diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index b3e22c890c51..865164fe28dc 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -217,8 +217,8 @@ static int omap_display_id(struct omap_dss_device *output) } else if (output->bridge) { struct drm_bridge *bridge = output->bridge; - while (bridge->next) - bridge = bridge->next; + while (drm_bridge_chain_get_next_bridge(bridge)) + bridge = drm_bridge_chain_get_next_bridge(bridge); node = bridge->of_node; } else if (output->panel) { diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c index 24bbe9f2a32e..8ca54081997e 100644 --- a/drivers/gpu/drm/omapdrm/omap_encoder.c +++ b/drivers/gpu/drm/omapdrm/omap_encoder.c @@ -126,7 +126,8 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder, for (dssdev = output; dssdev; dssdev = dssdev->next) omap_encoder_update_videomode_flags(&vm, dssdev->bus_flags); - for (bridge = output->bridge; bridge; bridge = bridge->next) { + for (bridge = output->bridge; bridge; + bridge = drm_bridge_chain_get_next_bridge(bridge)) { if (!bridge->timings) continue; diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c index 49f8a313e759..49c47185aff0 100644 --- a/drivers/gpu/drm/vc4/vc4_dsi.c +++ b/drivers/gpu/drm/vc4/vc4_dsi.c @@ -1644,8 +1644,10 @@ static void vc4_dsi_unbind(struct device *dev, struct device *master, struct drm_device *drm = dev_get_drvdata(master); struct vc4_dev *vc4 = to_vc4_dev(drm); struct vc4_dsi *dsi = dev_get_drvdata(dev); + struct drm_bridge *bridge; - if (dsi->bridge.next) + bridge = drm_bridge_chain_get_next_bridge(&dsi->bridge); + if (bridge) pm_runtime_disable(dev); vc4_dsi_encoder_destroy(dsi->encoder); diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 726435baf4ad..8aeba83fcf31 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -409,6 +409,19 @@ struct drm_bridge *of_drm_find_bridge(struct device_node *np); int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge, struct drm_bridge *previous); +/** + * drm_bridge_chain_get_next_bridge() - Get the next bridge in the chain + * @bridge: bridge object + * + * RETURNS: + * the next bridge in the chain, or NULL if @bridge is the last. + */ +static inline struct drm_bridge * +drm_bridge_chain_get_next_bridge(struct drm_bridge *bridge) +{ + return bridge->next; +} + bool drm_bridge_chain_mode_fixup(struct drm_bridge *bridge, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode); -- 2.21.0 _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
