[ALSA] powermac - Add AUTO_DRC config

PPC,PPC Tumbler driver
Added AUTO_DRC kernel config to enable/disable the auto-DRC-toggle
feature on tumbler/snapper.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/ppc/Kconfig b/sound/ppc/Kconfig
index bda5bc4..206b933 100644 (file)
--- a/sound/ppc/Kconfig
+++ b/sound/ppc/Kconfig
@@ -20,5 +20,17 @@ config SND_POWERMAC
          To compile this driver as a module, choose M here: the module
          will be called snd-powermac.
 
-endmenu
+config SND_POWERMAC_AUTO_DRC
+       bool "Toggle DRC automatically at headphone/line plug-in"
+       depends on SND_POWERMAC
+       default y
+       help
+         Say Y here to enable the automatic toggle of DRC (dynamic
+         range compression) on Tumbler/Snapper.
+         If this feature is enabled, DRC is turned off when the
+         headphone/line jack is plugged, and turned on when unplugged.
 
+         Note that you can turn on/off DRC manually even without this
+         option.
+
+endmenu

diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index b94437c..65384af 100644 (file)
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -948,7 +948,6 @@ static void device_change_handler(void *self)
                        msleep(10);
                check_mute(chip, &mix->amp_mute, 1, mix->auto_mute_notify,
                           chip->speaker_sw_ctl);
-               mix->drc_enable = 0;
        } else {
                /* unmute speaker, mute others */
                check_mute(chip, &mix->amp_mute, 0, mix->auto_mute_notify,
@@ -960,20 +959,21 @@ static void device_change_handler(void *self)
                if (mix->line_mute.addr != 0)
                        check_mute(chip, &mix->line_mute, 1, mix->auto_mute_notify,
                                   chip->lineout_sw_ctl);
-               mix->drc_enable = 1;
        }
-       if (mix->auto_mute_notify) {
+       if (mix->auto_mute_notify)
                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
                                       &chip->hp_detect_ctl->id);
+
+#ifdef CONFIG_SND_POWERMAC_AUTO_DRC
+       mix->drc_enable = ! (headphone || lineout);
+       if (mix->auto_mute_notify)
                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
                               &chip->drc_sw_ctl->id);
-       }
-
-       /* first set the DRC so the speaker do not explode -ReneR */
        if (chip->model == PMAC_TUMBLER)
                tumbler_set_drc(mix);
        else
                snapper_set_drc(mix);
+#endif
 
        /* reset the master volume so the correct amplification is applied */
        tumbler_set_master_volume(mix);
@@ -1370,6 +1370,17 @@ int __init snd_pmac_tumbler_init(pmac_t *chip)
        if ((err = snd_ctl_add(chip->card, chip->drc_sw_ctl)) < 0)
                return err;
 
+       /* set initial DRC range to 60% */
+       if (chip->model == PMAC_TUMBLER)
+               mix->drc_range = (TAS3001_DRC_MAX * 6) / 10;
+       else
+               mix->drc_range = (TAS3004_DRC_MAX * 6) / 10;
+       mix->drc_enable = 1; /* will be changed later if AUTO_DRC is set */
+       if (chip->model == PMAC_TUMBLER)
+               tumbler_set_drc(mix);
+       else
+               snapper_set_drc(mix);
+
 #ifdef CONFIG_PM
        chip->suspend = tumbler_suspend;
        chip->resume = tumbler_resume;