From: Uma Shankar <uma.shankar@xxxxxxxxx>
Panel Power On/Off sequences are part of Panel spec.
Enabling the support of same in DRM layer for fine grained
panel control. Some DSI controller/panels require making
SOC specific device ready changes in between the panel
power ON and sending the OTP sequences.
This patch introduces drm_panel_power_on which can be used
to decouple panel power ON and OTP. Earlier both operations
were being done as part of drm_panel_prepare.
Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
Signed-off-by: Vidya Srinivas <vidya.srinivas@xxxxxxxxx>
---
include/drm/drm_panel.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index 220d1e2b..515595b 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -69,6 +69,8 @@ struct drm_panel_funcs {
int (*disable)(struct drm_panel *panel);
int (*unprepare)(struct drm_panel *panel);
int (*prepare)(struct drm_panel *panel);
+ int (*power_on)(struct drm_panel *panel);
+ int (*power_off)(struct drm_panel *panel);
int (*enable)(struct drm_panel *panel);
int (*get_modes)(struct drm_panel *panel);
int (*get_timings)(struct drm_panel *panel, unsigned int num_timings,
@@ -166,6 +168,22 @@ static inline int drm_panel_enable(struct drm_panel *panel)
return panel ? -ENOSYS : -EINVAL;
}
+static inline int drm_panel_power_on(struct drm_panel *panel)
+{
+ if (panel && panel->funcs && panel->funcs->power_on)
+ return panel->funcs->power_on(panel);
+
+ return panel ? -ENOSYS : -EINVAL;
+}
+
+static inline int drm_panel_power_off(struct drm_panel *panel)
+{
+ if (panel && panel->funcs && panel->funcs->power_off)
+ return panel->funcs->power_off(panel);
+
+ return panel ? -ENOSYS : -EINVAL;
+}
+
/**
* drm_panel_get_modes - probe the available display modes of a panel
* @panel: DRM panel
--
1.9.1
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