[alsa-devel] [RFC 05/11] ALSA: hda - exported link_reset enter/exit

[Subhransu S. Prusty]

From: Jeeja KP <jeeja.kp at intel.com>

Exported azx_enter_link_reset and azx_exit_link_reset
functions to be used by the SKL controller driver

Signed-off-by: Jeeja KP <jeeja.kp at intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty at intel.com>
Signed-off-by: Vinod Koul <vinod.koul at intel.com>
---
 include/sound/hdaudio.h     |  3 +++
 sound/hda/hdac_controller.c | 10 ++++++----
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index bffb2a9..4eebc31 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -286,6 +286,8 @@ int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,
 
 void snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset);
 void snd_hdac_bus_stop_chip(struct hdac_bus *bus);
+void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus);
+void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus);
 
 void snd_hdac_bus_update_rirb(struct hdac_bus *bus);
 void snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
@@ -359,6 +361,7 @@ void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start,
 			  unsigned int streams);
 void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev,
 				      unsigned int streams);
+
 /*DSP loader functions */
 int snd_hdac_load_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
 				unsigned int byte_size,
diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c
index 5b1cd94..23aec0e 100644
--- a/sound/hda/hdac_controller.c
+++ b/sound/hda/hdac_controller.c
@@ -212,7 +212,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_bus_get_response);
  */
 
 /* enter link reset */
-static void azx_enter_link_reset(struct hdac_bus *bus)
+void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus)
 {
 	unsigned long timeout;
 
@@ -224,9 +224,10 @@ static void azx_enter_link_reset(struct hdac_bus *bus)
 	       time_before(jiffies, timeout))
 		usleep_range(500, 1000);
 }
+EXPORT_SYMBOL_GPL(snd_hdac_bus_enter_link_reset);
 
 /* exit link reset */
-static void azx_exit_link_reset(struct hdac_bus *bus)
+void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus)
 {
 	unsigned long timeout;
 
@@ -236,6 +237,7 @@ static void azx_exit_link_reset(struct hdac_bus *bus)
 	while (!azx_readb(bus, GCTL) && time_before(jiffies, timeout))
 		usleep_range(500, 1000);
 }
+EXPORT_SYMBOL_GPL(snd_hdac_bus_exit_link_reset);
 
 /* reset codec link */
 static int azx_reset(struct hdac_bus *bus, bool full_reset)
@@ -247,7 +249,7 @@ static int azx_reset(struct hdac_bus *bus, bool full_reset)
 	azx_writew(bus, STATESTS, STATESTS_INT_MASK);
 
 	/* reset controller */
-	azx_enter_link_reset(bus);
+	snd_hdac_bus_enter_link_reset(bus);
 
 	/* delay for >= 100us for codec PLL to settle per spec
 	 * Rev 0.9 section 5.5.1
@@ -255,7 +257,7 @@ static int azx_reset(struct hdac_bus *bus, bool full_reset)
 	usleep_range(500, 1000);
 
 	/* Bring controller out of reset */
-	azx_exit_link_reset(bus);
+	snd_hdac_bus_exit_link_reset(bus);
 
 	/* Brent Chartrand said to wait >= 540us for codecs to initialize */
 	usleep_range(1000, 1200);
-- 
1.9.0