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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>
This commit is contained in:
Wu Fengguang 2011-11-18 16:59:32 -06:00 committed by Takashi Iwai
parent 05c7cc9cca
commit c6e8453e75
1 changed files with 10 additions and 6 deletions
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16
sound/pci/hda/patch_hdmi.c
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@ -69,6 +69,7 @@ struct hdmi_spec_per_pin {
struct hda_codec *codec;
struct hdmi_eld sink_eld;
struct delayed_work work;
int repoll_count;
};
struct hdmi_spec {
@ -748,7 +749,7 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, int pin_idx,
* 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 @@ static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
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 @@ static int hdmi_read_pin_conn(struct hda_codec *codec, int pin_idx)
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 @@ static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, bool retry)
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 @@ static void hdmi_repoll_eld(struct work_struct *work)
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 @@ static int generic_hdmi_build_jack(struct hda_codec *codec, int pin_idx)
if (err < 0)
return err;
hdmi_present_sense(per_pin, false);
hdmi_present_sense(per_pin, 0);
return 0;
}