<div dir="ltr"><div>Hey Liu, </div>This patch does not apply on upstream-drm-misc/drm-misc-next. When it passes local testing & building, I'm ready to merge it. </div> <div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 23 Apr 2021 at 11:42, Liu Ying <<a href="mailto:victor.liu@nxp.com">victor.liu@nxp.com</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">This patch replaces ->mode_fixup() with ->atomic_check() so that a full modeset can be requested from there when crtc_state->active is changed to be true(which implies only connector's DPMS is brought out of "Off" status, though not necessarily). Bridge functions are added or changed to accommodate the ->atomic_check() callback. That full modeset is needed by the up-coming patch which gets MIPI DSI controller and PHY ready in ->mode_set(), because it makes sure ->mode_set() and ->atomic_disable() are called in pairs. Cc: Andrzej Hajda <<a href="mailto:a.hajda@samsung.com" target="_blank">a.hajda@samsung.com</a>> Cc: Neil Armstrong <<a href="mailto:narmstrong@baylibre.com" target="_blank">narmstrong@baylibre.com</a>> Cc: Robert Foss <<a href="mailto:robert.foss@linaro.org" target="_blank">robert.foss@linaro.org</a>> Cc: Laurent Pinchart <<a href="mailto:Laurent.pinchart@ideasonboard.com" target="_blank">Laurent.pinchart@ideasonboard.com</a>> Cc: Jonas Karlman <<a href="mailto:jonas@kwiboo.se" target="_blank">jonas@kwiboo.se</a>> Cc: Jernej Skrabec <<a href="mailto:jernej.skrabec@siol.net" target="_blank">jernej.skrabec@siol.net</a>> Cc: David Airlie <<a href="mailto:airlied@linux.ie" target="_blank">airlied@linux.ie</a>> Cc: Daniel Vetter <<a href="mailto:daniel@ffwll.ch" target="_blank">daniel@ffwll.ch</a>> Cc: Guido Günther <<a href="mailto:agx@sigxcpu.org" target="_blank">agx@sigxcpu.org</a>> Cc: Robert Chiras <<a href="mailto:robert.chiras@nxp.com" target="_blank">robert.chiras@nxp.com</a>> Cc: NXP Linux Team <<a href="mailto:linux-imx@nxp.com" target="_blank">linux-imx@nxp.com</a>> Signed-off-by: Liu Ying <<a href="mailto:victor.liu@nxp.com" target="_blank">victor.liu@nxp.com</a>> --- v2->v3: * Split from the single patch in v2 to clarify changes. (Neil) drivers/gpu/drm/bridge/nwl-dsi.c | 61 ++++++++++++++++++++------------ 1 file changed, 39 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c index 66b67402f1acd..c65ca860712d2 100644 --- a/drivers/gpu/drm/bridge/nwl-dsi.c +++ b/drivers/gpu/drm/bridge/nwl-dsi.c @@ -21,6 +21,7 @@ #include <linux/sys_soc.h> #include <linux/time64.h> +#include <drm/drm_atomic_state_helper.h> #include <drm/drm_bridge.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_of.h> @@ -742,7 +743,9 @@ static int nwl_dsi_disable(struct nwl_dsi *dsi) return 0; } -static void nwl_dsi_bridge_disable(struct drm_bridge *bridge) +static void +nwl_dsi_bridge_atomic_disable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) { struct nwl_dsi *dsi = bridge_to_dsi(bridge); int ret; @@ -803,17 +806,6 @@ static int nwl_dsi_get_dphy_params(struct nwl_dsi *dsi, return 0; } -static bool nwl_dsi_bridge_mode_fixup(struct drm_bridge *bridge, - const struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) -{ - /* At least LCDIF + NWL needs active high sync */ - adjusted_mode->flags |= (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); - adjusted_mode->flags &= ~(DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); - - return true; -} - static enum drm_mode_status nwl_dsi_bridge_mode_valid(struct drm_bridge *bridge, const struct drm_display_info *info, @@ -831,6 +823,24 @@ nwl_dsi_bridge_mode_valid(struct drm_bridge *bridge, return MODE_OK; } +static int nwl_dsi_bridge_atomic_check(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode; + + /* At least LCDIF + NWL needs active high sync */ + adjusted_mode->flags |= (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); + adjusted_mode->flags &= ~(DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); + + /* Do a full modeset if crtc_state->active is changed to be true. */ + if (crtc_state->active_changed && crtc_state->active) + crtc_state->mode_changed = true; + + return 0; +} + static void nwl_dsi_bridge_mode_set(struct drm_bridge *bridge, const struct drm_display_mode *mode, @@ -862,7 +872,9 @@ nwl_dsi_bridge_mode_set(struct drm_bridge *bridge, drm_mode_debug_printmodeline(adjusted_mode); } -static void nwl_dsi_bridge_pre_enable(struct drm_bridge *bridge) +static void +nwl_dsi_bridge_atomic_pre_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) { struct nwl_dsi *dsi = bridge_to_dsi(bridge); int ret; @@ -897,7 +909,9 @@ static void nwl_dsi_bridge_pre_enable(struct drm_bridge *bridge) } } -static void nwl_dsi_bridge_enable(struct drm_bridge *bridge) +static void +nwl_dsi_bridge_atomic_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) { struct nwl_dsi *dsi = bridge_to_dsi(bridge); int ret; @@ -942,14 +956,17 @@ static void nwl_dsi_bridge_detach(struct drm_bridge *bridge) } static const struct drm_bridge_funcs nwl_dsi_bridge_funcs = { - .pre_enable = nwl_dsi_bridge_pre_enable, - .enable = nwl_dsi_bridge_enable, - .disable = nwl_dsi_bridge_disable, - .mode_fixup = nwl_dsi_bridge_mode_fixup, - .mode_set = nwl_dsi_bridge_mode_set, - .mode_valid = nwl_dsi_bridge_mode_valid, - .attach = nwl_dsi_bridge_attach, - .detach = nwl_dsi_bridge_detach, + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_reset = drm_atomic_helper_bridge_reset, + .atomic_check = nwl_dsi_bridge_atomic_check, + .atomic_pre_enable = nwl_dsi_bridge_atomic_pre_enable, + .atomic_enable = nwl_dsi_bridge_atomic_enable, + .atomic_disable = nwl_dsi_bridge_atomic_disable, + .mode_set = nwl_dsi_bridge_mode_set, + .mode_valid = nwl_dsi_bridge_mode_valid, + .attach = nwl_dsi_bridge_attach, + .detach = nwl_dsi_bridge_detach, }; static int nwl_dsi_parse_dt(struct nwl_dsi *dsi) -- 2.25.1 </blockquote></div>