ALSA: hda - Implement a poll loop for jacks as a module parameter

Now that we have a generic unsol mechanism, we can implement a generic
poll loop, which can be used for debugging, or if a codec's unsol
mechanism is broken.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 70d4848..ee958a7 100644 (file)
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -1135,6 +1135,19 @@ static void restore_shutup_pins(struct hda_codec *codec)
 }
 #endif
 
+static void hda_jackpoll_work(struct work_struct *work)
+{
+       struct hda_codec *codec =
+               container_of(work, struct hda_codec, jackpoll_work.work);
+       if (!codec->jackpoll_interval)
+               return;
+
+       snd_hda_jack_set_dirty_all(codec);
+       snd_hda_jack_poll_all(codec);
+       queue_delayed_work(codec->bus->workq, &codec->jackpoll_work,
+                          codec->jackpoll_interval);
+}
+
 static void init_hda_cache(struct hda_cache_rec *cache,
                           unsigned int record_size);
 static void free_hda_cache(struct hda_cache_rec *cache);
@@ -1190,6 +1203,7 @@ static void snd_hda_codec_free(struct hda_codec *codec)
 {
        if (!codec)
                return;
+       cancel_delayed_work_sync(&codec->jackpoll_work);
        snd_hda_jack_tbl_clear(codec);
        restore_init_pincfgs(codec);
 #ifdef CONFIG_PM
@@ -1273,6 +1287,7 @@ int /*__devinit*/ snd_hda_codec_new(struct hda_bus *bus,
        snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8);
        snd_array_init(&codec->conn_lists, sizeof(hda_nid_t), 64);
        snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16);
+       INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work);
 
 #ifdef CONFIG_PM
        spin_lock_init(&codec->power_lock);
@@ -2349,7 +2364,7 @@ int snd_hda_codec_reset(struct hda_codec *codec)
                return -EBUSY;
 
        /* OK, let it free */
-
+       cancel_delayed_work_sync(&codec->jackpoll_work);
 #ifdef CONFIG_PM
        cancel_delayed_work_sync(&codec->power_work);
        codec->power_on = 0;
@@ -3646,7 +3661,6 @@ static void hda_call_codec_resume(struct hda_codec *codec)
        restore_pincfgs(codec); /* restore all current pin configs */
        restore_shutup_pins(codec);
        hda_exec_init_verbs(codec);
-       snd_hda_jack_set_dirty_all(codec);
        if (codec->patch_ops.resume)
                codec->patch_ops.resume(codec);
        else {
@@ -3655,7 +3669,13 @@ static void hda_call_codec_resume(struct hda_codec *codec)
                snd_hda_codec_resume_amp(codec);
                snd_hda_codec_resume_cache(codec);
        }
-       snd_hda_jack_report_sync(codec);
+
+       if (codec->jackpoll_interval)
+               hda_jackpoll_work(&codec->jackpoll_work.work);
+       else {
+               snd_hda_jack_set_dirty_all(codec);
+               snd_hda_jack_report_sync(codec);
+       }
        snd_hda_power_down(codec); /* flag down before returning */
 }
 #endif /* CONFIG_PM */
@@ -3737,7 +3757,10 @@ int snd_hda_codec_build_controls(struct hda_codec *codec)
        if (err < 0)
                return err;
 
-       snd_hda_jack_report_sync(codec); /* call at the last init point */
+       if (codec->jackpoll_interval)
+               hda_jackpoll_work(&codec->jackpoll_work.work);
+       else
+               snd_hda_jack_report_sync(codec); /* call at the last init point */
        return 0;
 }
 
@@ -5128,6 +5151,7 @@ int snd_hda_suspend(struct hda_bus *bus)
        struct hda_codec *codec;
 
        list_for_each_entry(codec, &bus->codec_list, list) {
+               cancel_delayed_work_sync(&codec->jackpoll_work);
                if (hda_codec_is_power_on(codec))
                        hda_call_codec_suspend(codec, false);
        }

diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 507fe8a..10a03b0 100644 (file)
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -884,6 +884,8 @@ struct hda_codec {
 
        /* jack detection */
        struct snd_array jacktbl;
+       unsigned long jackpoll_interval; /* In jiffies. Zero means no poll, rely on unsol events */
+       struct delayed_work jackpoll_work;
 
 #ifdef CONFIG_SND_HDA_INPUT_JACK
        /* jack detection */

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index ecf2775..d327ffa 100644 (file)
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -68,6 +68,7 @@ static int position_fix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
 static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
 static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
 static int probe_only[SNDRV_CARDS];
+static int jackpoll_ms[SNDRV_CARDS];
 static bool single_cmd;
 static int enable_msi = -1;
 #ifdef CONFIG_SND_HDA_PATCH_LOADER
@@ -95,6 +96,8 @@ module_param_array(probe_mask, int, NULL, 0444);
 MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
 module_param_array(probe_only, int, NULL, 0444);
 MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization.");
+module_param_array(jackpoll_ms, int, NULL, 0444);
+MODULE_PARM_DESC(jackpoll_ms, "Ms between polling for jack events (default = 0, using unsol events only)");
 module_param(single_cmd, bool, 0444);
 MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
                 "(for debugging only).");
@@ -1582,6 +1585,22 @@ static void azx_bus_reset(struct hda_bus *bus)
        bus->in_reset = 0;
 }
 
+static int get_jackpoll_interval(struct azx *chip)
+{
+       int i = jackpoll_ms[chip->dev_index];
+       unsigned int j;
+       if (i == 0)
+               return 0;
+       if (i < 50 || i > 60000)
+               j = 0;
+       else
+               j = msecs_to_jiffies(i);
+       if (j == 0)
+               snd_printk(KERN_WARNING SFX
+                          "jackpoll_ms value out of range: %d\n", i);
+       return j;
+}
+
 /*
  * Codec initialization
  */
@@ -1666,6 +1685,7 @@ static int DELAYED_INIT_MARK azx_codec_create(struct azx *chip, const char *mode
                        err = snd_hda_codec_new(chip->bus, c, &codec);
                        if (err < 0)
                                continue;
+                       codec->jackpoll_interval = get_jackpoll_interval(chip);
                        codec->beep_mode = chip->beep_mode;
                        codecs++;
                }

diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c
index 5c690cb..07d5288 100644 (file)
--- a/sound/pci/hda/hda_jack.c
+++ b/sound/pci/hda/hda_jack.c
@@ -439,3 +439,25 @@ void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res)
 }
 EXPORT_SYMBOL_HDA(snd_hda_jack_unsol_event);
 
+void snd_hda_jack_poll_all(struct hda_codec *codec)
+{
+       struct hda_jack_tbl *jack = codec->jacktbl.list;
+       int i, changes = 0;
+
+       for (i = 0; i < codec->jacktbl.used; i++, jack++) {
+               unsigned int old_sense;
+               if (!jack->nid || !jack->jack_dirty || jack->phantom_jack)
+                       continue;
+               old_sense = get_jack_plug_state(jack->pin_sense);
+               jack_detect_update(codec, jack);
+               if (old_sense == get_jack_plug_state(jack->pin_sense))
+                       continue;
+               changes = 1;
+               if (jack->callback)
+                       jack->callback(codec, jack);
+       }
+       if (changes)
+               snd_hda_jack_report_sync(codec);
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_poll_all);
+

diff --git a/sound/pci/hda/hda_jack.h b/sound/pci/hda/hda_jack.h
index af8dd47..4487785 100644 (file)
--- a/sound/pci/hda/hda_jack.h
+++ b/sound/pci/hda/hda_jack.h
@@ -84,4 +84,6 @@ void snd_hda_jack_report_sync(struct hda_codec *codec);
 
 void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res);
 
+void snd_hda_jack_poll_all(struct hda_codec *codec);
+
 #endif /* __SOUND_HDA_JACK_H */