On 23/04/2021 11:26, Liu Ying wrote: > 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.ha...@samsung.com> > Cc: Neil Armstrong <narmstr...@baylibre.com> > Cc: Robert Foss <robert.f...@linaro.org> > Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com> > Cc: Jonas Karlman <jo...@kwiboo.se> > Cc: Jernej Skrabec <jernej.skra...@siol.net> > Cc: David Airlie <airl...@linux.ie> > Cc: Daniel Vetter <dan...@ffwll.ch> > Cc: Guido Günther <a...@sigxcpu.org> > Cc: Robert Chiras <robert.chi...@nxp.com> > Cc: NXP Linux Team <linux-...@nxp.com> > Signed-off-by: Liu Ying <victor....@nxp.com> > --- > 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) >
Reviewed-by: Neil Armstrong <narmstr...@baylibre.com> _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel