ALSA: hda - repoll ELD content for multiple times
Improve the one-shot ELD repoll to up to 6 retries.
Up to now the 300ms looks sufficient for the test boxes. However
I'm a bit worried about how well it can fit the wider user base.
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 9850c5b..c505fd5 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -69,6 +69,7 @@
struct hda_codec *codec;
struct hdmi_eld sink_eld;
struct delayed_work work;
+ int repoll_count;
};
struct hdmi_spec {
@@ -748,7 +749,7 @@
* Unsolicited events
*/
-static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, bool retry);
+static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll);
static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
{
@@ -766,7 +767,7 @@
if (pin_idx < 0)
return;
- hdmi_present_sense(&spec->pins[pin_idx], true);
+ hdmi_present_sense(&spec->pins[pin_idx], 1);
}
static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
@@ -960,7 +961,7 @@
return 0;
}
-static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, bool retry)
+static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
{
struct hda_codec *codec = per_pin->codec;
struct hdmi_eld *eld = &per_pin->sink_eld;
@@ -989,7 +990,7 @@
if (eld_valid) {
if (!snd_hdmi_get_eld(eld, codec, pin_nid))
snd_hdmi_show_eld(eld);
- else if (retry) {
+ else if (repoll) {
queue_delayed_work(codec->bus->workq,
&per_pin->work,
msecs_to_jiffies(300));
@@ -1004,7 +1005,10 @@
struct hdmi_spec_per_pin *per_pin =
container_of(to_delayed_work(work), struct hdmi_spec_per_pin, work);
- hdmi_present_sense(per_pin, false);
+ if (per_pin->repoll_count++ > 6)
+ per_pin->repoll_count = 0;
+
+ hdmi_present_sense(per_pin, per_pin->repoll_count);
}
static int hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
@@ -1235,7 +1239,7 @@
if (err < 0)
return err;
- hdmi_present_sense(per_pin, false);
+ hdmi_present_sense(per_pin, 0);
return 0;
}