[PATCH 06/21] drm/msm/dpu: Add utility to get mixer number

[Jun Nie]

Add utility to get mixer number via CRTC handler

Signed-off-by: Jun Nie <jun.nie at linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 7 +++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h | 5 +++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 7d0fff9472441..a27e39c525d1a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1306,6 +1306,13 @@ int dpu_crtc_vblank(struct drm_crtc *crtc, bool en)
 	return 0;
 }
 
+unsigned int dpu_crtc_get_lm_num(const struct drm_crtc_state *state)
+{
+	struct dpu_crtc_state *cstate = to_dpu_crtc_state(state);
+
+	return cstate->num_mixers;
+}
+
 #ifdef CONFIG_DEBUG_FS
 static int _dpu_debugfs_status_show(struct seq_file *s, void *data)
 {
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
index b26d5fe40c721..701c35803633d 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
@@ -301,5 +301,10 @@ static inline enum dpu_crtc_client_type dpu_crtc_get_client_type(
 }
 
 void dpu_crtc_frame_event_cb(struct drm_crtc *crtc, u32 event);
+/**
+ * dpu_crtc_get_lm_num - Get mixer number in this CRTC pipeline
+ * @crtc: Pointer to drm crtc object
+ */
+unsigned int dpu_crtc_get_lm_num(const struct drm_crtc_state *state);
 
 #endif /* _DPU_CRTC_H_ */

-- 
2.34.1