[Intel-gfx] [PATCH v6 1/4] drm/i915: Add audio sync_audio_rate callback

[libin.yang at intel.com]

From: Libin Yang <libin.yang at intel.com>

Add the sync_audio_rate callback.

With the callback, audio driver can trigger
i915 driver to set the proper N/CTS or N/M
based on different sample rates.

Signed-off-by: Libin Yang <libin.yang at intel.com>
---
 include/drm/i915_component.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h
index c9a8b64..8ad6f1b 100644
--- a/include/drm/i915_component.h
+++ b/include/drm/i915_component.h
@@ -33,6 +33,13 @@ struct i915_audio_component {
 		void (*put_power)(struct device *);
 		void (*codec_wake_override)(struct device *, bool enable);
 		int (*get_cdclk_freq)(struct device *);
+		/**
+		 * @sync_audio_rate: set n/cts based on the sample rate
+		 *
+		 * Called from audio driver. After audio driver sets the
+		 * sample rate, it will call this function to set n/cts
+		 */
+		int (*sync_audio_rate)(struct device *, int port, int rate);
 	} *ops;
 };
 
-- 
1.9.1