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authorVinod Koul <vinod.koul@intel.com>2016-05-12 08:58:55 +0530
committerMark Brown <broonie@kernel.org>2016-05-13 11:43:12 +0100
commitb2047e996cd88d36eb0f4e84fe6aedab831a4b31 (patch)
treec5591240582f5f88fad827cd223d6e319e85dd5c /sound
parentcce6c149eba3aabf678ffea91ac1e4103b9c185e (diff)
downloadlinux-stericsson-b2047e996cd88d36eb0f4e84fe6aedab831a4b31.tar.gz
ASoC: hdac_hdmi: add link management
Manage the hda idisp link using shiny new link APIs. We need to keep link On while we probe and also hold the reference in runtime resume and drop in suspend Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/hdac_hdmi.c32
1 files changed, 30 insertions, 2 deletions
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index aaa038ffc8a5..13002f33384e 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -1378,10 +1378,18 @@ static int hdmi_codec_probe(struct snd_soc_codec *codec)
struct snd_soc_dapm_context *dapm =
snd_soc_component_get_dapm(&codec->component);
struct hdac_hdmi_pin *pin;
+ struct hdac_ext_link *hlink = NULL;
int ret;
edev->scodec = codec;
+ /*
+ * hold the ref while we probe, also no need to drop the ref on
+ * exit, we call pm_runtime_suspend() so that will do for us
+ */
+ hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
+ snd_hdac_ext_bus_link_get(edev->ebus, hlink);
+
ret = create_fill_widget_route_map(dapm);
if (ret < 0)
return ret;
@@ -1480,9 +1488,14 @@ static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
struct hdac_device *codec = &edev->hdac;
struct hdac_hdmi_priv *hdmi_priv;
struct snd_soc_dai_driver *hdmi_dais = NULL;
+ struct hdac_ext_link *hlink = NULL;
int num_dais = 0;
int ret = 0;
+ /* hold the ref while we probe */
+ hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
+ snd_hdac_ext_bus_link_get(edev->ebus, hlink);
+
hdmi_priv = devm_kzalloc(&codec->dev, sizeof(*hdmi_priv), GFP_KERNEL);
if (hdmi_priv == NULL)
return -ENOMEM;
@@ -1516,8 +1529,12 @@ static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
}
/* ASoC specific initialization */
- return snd_soc_register_codec(&codec->dev, &hdmi_hda_codec,
- hdmi_dais, num_dais);
+ ret = snd_soc_register_codec(&codec->dev, &hdmi_hda_codec,
+ hdmi_dais, num_dais);
+
+ snd_hdac_ext_bus_link_put(edev->ebus, hlink);
+
+ return ret;
}
static int hdac_hdmi_dev_remove(struct hdac_ext_device *edev)
@@ -1556,6 +1573,9 @@ static int hdac_hdmi_runtime_suspend(struct device *dev)
struct hdac_ext_device *edev = to_hda_ext_device(dev);
struct hdac_device *hdac = &edev->hdac;
struct hdac_bus *bus = hdac->bus;
+ unsigned long timeout;
+ struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
+ struct hdac_ext_link *hlink = NULL;
int err;
dev_dbg(dev, "Enter: %s\n", __func__);
@@ -1579,6 +1599,9 @@ static int hdac_hdmi_runtime_suspend(struct device *dev)
return err;
}
+ hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
+ snd_hdac_ext_bus_link_put(ebus, hlink);
+
return 0;
}
@@ -1587,6 +1610,8 @@ static int hdac_hdmi_runtime_resume(struct device *dev)
struct hdac_ext_device *edev = to_hda_ext_device(dev);
struct hdac_device *hdac = &edev->hdac;
struct hdac_bus *bus = hdac->bus;
+ struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
+ struct hdac_ext_link *hlink = NULL;
int err;
dev_dbg(dev, "Enter: %s\n", __func__);
@@ -1595,6 +1620,9 @@ static int hdac_hdmi_runtime_resume(struct device *dev)
if (!bus)
return 0;
+ hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
+ snd_hdac_ext_bus_link_get(ebus, hlink);
+
err = snd_hdac_display_power(bus, true);
if (err < 0) {
dev_err(bus->dev, "Cannot turn on display power on i915\n");