[PATCH v2 4/7] drm/bridge: lontium-lt9611: Use atomic variants of drm_bridge_funcs

[Sam Ravnborg <sam@xxxxxxxxxxxx>]

The atomic variants of enable/disable in drm_bridge_funcs are the
preferred operations - introduce these.

Use of mode_set is deprecated - merge the functionality with
atomic_enable()

v2:
  - Added check if crtc_state is NULL (Maxime)
  - Updated to use drm_atomic_get_new_crtc_for_bridge()

Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Maxime Ripard <maxime@xxxxxxxxxx>
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@xxxxxxxxx>
---
 drivers/gpu/drm/bridge/lontium-lt9611.c | 75 +++++++++++--------------
 1 file changed, 33 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index 29b1ce2140ab..cdc3d5f8dcac 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -700,9 +700,23 @@ lt9611_connector_mode_valid(struct drm_connector *connector,
 }
 
 /* bridge funcs */
-static void lt9611_bridge_enable(struct drm_bridge *bridge)
+static void lt9611_bridge_atomic_enable(struct drm_bridge *bridge,
+					struct drm_bridge_state *old_bridge_state)
 {
 	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
+	const struct drm_display_mode *mode;
+	const struct drm_crtc_state *crtc_state;
+	struct hdmi_avi_infoframe avi_frame;
+	int ret;
+
+	crtc_state = drm_atomic_get_new_crtc_for_bridge(old_bridge_state->base.state,
+							bridge);
+	if (!crtc_state) {
+		dev_err(lt9611->dev, "no crtc_state available\n");
+		return;
+	}
+
+	mode = &crtc_state->mode;
 
 	if (lt9611_power_on(lt9611)) {
 		dev_err(lt9611->dev, "power on failed\n");
@@ -719,9 +733,21 @@ static void lt9611_bridge_enable(struct drm_bridge *bridge)
 
 	/* Enable HDMI output */
 	regmap_write(lt9611->regmap, 0x8130, 0xea);
+
+	lt9611_mipi_input_digital(lt9611, mode);
+	lt9611_pll_setup(lt9611, mode);
+	lt9611_mipi_video_setup(lt9611, mode);
+	lt9611_pcr_setup(lt9611, mode);
+
+	ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame,
+						       &lt9611->connector,
+						       mode);
+	if (!ret)
+		lt9611->vic = avi_frame.video_code;
 }
 
-static void lt9611_bridge_disable(struct drm_bridge *bridge)
+static void lt9611_bridge_atomic_disable(struct drm_bridge *bridge,
+					 struct drm_bridge_state *old_bridge_state)
 {
 	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
 	int ret;
@@ -877,48 +903,14 @@ static enum drm_mode_status lt9611_bridge_mode_valid(struct drm_bridge *bridge,
 		return MODE_OK;
 }
 
-static void lt9611_bridge_pre_enable(struct drm_bridge *bridge)
-{
-	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
-
-	if (!lt9611->sleep)
-		return;
-
-	lt9611_reset(lt9611);
-	regmap_write(lt9611->regmap, 0x80ee, 0x01);
-
-	lt9611->sleep = false;
-}
-
-static void lt9611_bridge_post_disable(struct drm_bridge *bridge)
+static void lt9611_bridge_atomic_post_disable(struct drm_bridge *bridge,
+					      struct drm_bridge_state *old_bridge_state)
 {
 	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
 
 	lt9611_sleep_setup(lt9611);
 }
 
-static void lt9611_bridge_mode_set(struct drm_bridge *bridge,
-				   const struct drm_display_mode *mode,
-				   const struct drm_display_mode *adj_mode)
-{
-	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
-	struct hdmi_avi_infoframe avi_frame;
-	int ret;
-
-	lt9611_bridge_pre_enable(bridge);
-
-	lt9611_mipi_input_digital(lt9611, mode);
-	lt9611_pll_setup(lt9611, mode);
-	lt9611_mipi_video_setup(lt9611, mode);
-	lt9611_pcr_setup(lt9611, mode);
-
-	ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame,
-						       &lt9611->connector,
-						       mode);
-	if (!ret)
-		lt9611->vic = avi_frame.video_code;
-}
-
 static enum drm_connector_status lt9611_bridge_detect(struct drm_bridge *bridge)
 {
 	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
@@ -954,10 +946,9 @@ static const struct drm_bridge_funcs lt9611_bridge_funcs = {
 	.attach = lt9611_bridge_attach,
 	.detach = lt9611_bridge_detach,
 	.mode_valid = lt9611_bridge_mode_valid,
-	.enable = lt9611_bridge_enable,
-	.disable = lt9611_bridge_disable,
-	.post_disable = lt9611_bridge_post_disable,
-	.mode_set = lt9611_bridge_mode_set,
+	.atomic_enable = lt9611_bridge_atomic_enable,
+	.atomic_disable = lt9611_bridge_atomic_disable,
+	.atomic_post_disable = lt9611_bridge_atomic_post_disable,
 	.detect = lt9611_bridge_detect,
 	.get_edid = lt9611_bridge_get_edid,
 	.hpd_enable = lt9611_bridge_hpd_enable,
-- 
2.30.2