[PATCH RFC 07/13] drm: bridge: inno_hdmi: Add .disable platform operation

[Michal Wilczynski]

The Innosilicon HDMI driver supports platform-specific behavior through
the `inno_hdmi_plat_ops`. While it provides an `.enable` hook for
platform-specific power up sequences (like enabling PHYs), it lacks a
corresponding hook for power down.

This patch adds a new `.disable` op to the `inno_hdmi_plat_ops` struct
and calls it at the beginning of `inno_hdmi_bridge_atomic_disable()`.

This allows platform specific drivers, such as the StarFive JH7110,
to implement their own power down sequence (e.g., calling
phy_power_off() and clk_disable_unprepare()).

Signed-off-by: Michal Wilczynski <m.wilczynski at samsung.com>
---
 drivers/gpu/drm/bridge/inno-hdmi.c | 4 ++++
 include/drm/bridge/inno_hdmi.h     | 1 +
 2 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/bridge/inno-hdmi.c b/drivers/gpu/drm/bridge/inno-hdmi.c
index 9a2370ed2f208caf3dafb4a4d8884516d489263c..37ed7169bfce755cc5bddca16c78d4f112ea33e6 100644
--- a/drivers/gpu/drm/bridge/inno-hdmi.c
+++ b/drivers/gpu/drm/bridge/inno-hdmi.c
@@ -887,6 +887,10 @@ static void inno_hdmi_bridge_atomic_disable(struct drm_bridge *bridge,
 					    struct drm_atomic_state *state)
 {
 	struct inno_hdmi *hdmi = bridge_to_inno_hdmi(bridge);
+	const struct inno_hdmi_plat_ops *plat_ops = hdmi->plat_data->ops;
+
+	if (plat_ops && plat_ops->disable)
+		plat_ops->disable(hdmi->dev);
 
 	inno_hdmi_standby(hdmi);
 }
diff --git a/include/drm/bridge/inno_hdmi.h b/include/drm/bridge/inno_hdmi.h
index 019680622324197e046a1c606ec25aabe95537b4..ca554c525fd6bf63a4a8b9721e967bc473492f0a 100644
--- a/include/drm/bridge/inno_hdmi.h
+++ b/include/drm/bridge/inno_hdmi.h
@@ -16,6 +16,7 @@ struct inno_hdmi_i2c;
 
 struct inno_hdmi_plat_ops {
 	void (*enable)(struct device *pdev, struct drm_display_mode *mode);
+	void (*disable)(struct device *pdev);
 };
 
 struct inno_hdmi_phy_config {

-- 
2.34.1