From: Liu Ying <victor.liu@xxxxxxx> [ Upstream commit 3afb2a28fa2404d11cce1956a003f2aaca4da421 ] 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.hajda@xxxxxxxxxxx> Cc: Neil Armstrong <narmstrong@xxxxxxxxxxxx> Cc: Robert Foss <robert.foss@xxxxxxxxxx> Cc: Laurent Pinchart <Laurent.pinchart@xxxxxxxxxxxxxxxx> Cc: Jonas Karlman <jonas@xxxxxxxxx> Cc: Jernej Skrabec <jernej.skrabec@xxxxxxxx> Cc: David Airlie <airlied@xxxxxxxx> Cc: Daniel Vetter <daniel@xxxxxxxx> Cc: Guido Günther <agx@xxxxxxxxxxx> Cc: Robert Chiras <robert.chiras@xxxxxxx> Cc: NXP Linux Team <linux-imx@xxxxxxx> Signed-off-by: Liu Ying <victor.liu@xxxxxxx> Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/1619170003-4817-2-git-send-email-victor.liu@xxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- 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 66b67402f1ac..c65ca860712d 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) -- 2.30.2
