[PATCH v4 09/20] drm/bridge: inno-hdmi: Add .disable platform operation

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()).

Reviewed-by: Joshua Peisach <redacted>
Signed-off-by: Michal Wilczynski <m.wilczynski@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 1264152fb1434acda584e4af3d54e4986b57aa3e..06917e83c5e530d158a06ae2a877e78e22ed842d 100644
--- a/drivers/gpu/drm/bridge/inno-hdmi.c
+++ b/drivers/gpu/drm/bridge/inno-hdmi.c

@@ -886,6 +886,10 @@ static void inno_hdmi_bridge_atomic_disable(struct drm_bridge *bridge,
 					    struct drm_atomic_commit *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 81da9d9bcd79db8fe26c6dff4569371e484df608..5fca651c56b056d814124aa9c7e91aa7fd7ed1cd 100644
--- a/include/drm/bridge/inno_hdmi.h
+++ b/include/drm/bridge/inno_hdmi.h

@@ -16,6 +16,7 @@ struct platform_device;
 
 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


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