[ALSA] Removing obsolete AC97_SHARED_TYPES

This patch cleans last ac97 audio/modem codec interception in
initialization procedures (ac97_mixer_new()) and removes obsolete
SHARED_TYPE 'locking' which prevents from AMC codecs to function
correctly.

Signed-off-by: Sasha Khapyorsky <sashak@smlink.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

8 files changed, 3 insertions, 52 deletions

diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index d11f34832a97..7f0ca79d6c98 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -387,15 +387,6 @@
 #define AC97_RATES_MIC_ADC      4
 #define AC97_RATES_SPDIF        5
 
-/* shared controllers */
-enum {
-        AC97_SHARED_TYPE_NONE,
-        AC97_SHARED_TYPE_ICH,
-        AC97_SHARED_TYPE_ATIIXP,
-        AC97_SHARED_TYPE_VIA,
-        AC97_SHARED_TYPES
-};
-
 /*
  *
  */
@@ -468,7 +459,6 @@ struct _snd_ac97_bus {
         unsigned short used_slots[2][4]; /* actually used PCM slots */
         unsigned short pcms_count; /* count of PCMs */
         struct ac97_pcm *pcms;
-        unsigned int shared_type;       /* type of shared controller betwen audio and modem */
         ac97_t *codec[4];
         snd_info_entry_t *proc;
 };
diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index 41fc290149ed..56549add80a8 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -220,12 +220,6 @@ const char *snd_ac97_stereo_enhancements[] =
   /*  31 */ "Reserved 31"
 };
 
-/*
- * Shared AC97 controllers (ICH, ATIIXP...)
- */
-static DECLARE_MUTEX(shared_codec_mutex);
-static ac97_t *shared_codec[AC97_SHARED_TYPES][4];
-
 
 /*
  *  I/O routines
@@ -996,14 +990,8 @@ static int snd_ac97_free(ac97_t *ac97)
 {
         if (ac97) {
                 snd_ac97_proc_done(ac97);
-                if (ac97->bus) {
+                if (ac97->bus)
                         ac97->bus->codec[ac97->num] = NULL;
-                        if (ac97->bus->shared_type) {
-                                down(&shared_codec_mutex);
-                                shared_codec[ac97->bus->shared_type-1][ac97->num] = NULL;
-                                up(&shared_codec_mutex);
-                        }
-                }
                 if (ac97->private_free)
                         ac97->private_free(ac97);
                 kfree(ac97);
@@ -1889,21 +1877,6 @@ int snd_ac97_mixer(ac97_bus_t *bus, ac97_template_t *template, ac97_t **rac97)
         snd_assert(bus != NULL && template != NULL, return -EINVAL);
         snd_assert(template->num < 4 && bus->codec[template->num] == NULL, return -EINVAL);
 
-        snd_assert(bus->shared_type <= AC97_SHARED_TYPES, return -EINVAL);
-        if (bus->shared_type) {
-                /* already shared? */
-                down(&shared_codec_mutex);
-                ac97 = shared_codec[bus->shared_type-1][template->num];
-                if (ac97) {
-                        if ((ac97_is_audio(ac97) && (template->scaps & AC97_SCAP_SKIP_AUDIO)) ||
-                            (ac97_is_modem(ac97) && (template->scaps & AC97_SCAP_SKIP_MODEM))) {
-                                up(&shared_codec_mutex);
-                                return -EACCES; /* skip this */
-                        }
-                }
-                up(&shared_codec_mutex);
-        }
-
         card = bus->card;
         ac97 = kzalloc(sizeof(*ac97), GFP_KERNEL);
         if (ac97 == NULL)
@@ -2153,7 +2126,7 @@ int snd_ac97_mixer(ac97_bus_t *bus, ac97_template_t *template, ac97_t **rac97)
                 }
         }
         /* make sure the proper powerdown bits are cleared */
-        if (ac97->scaps) {
+        if (ac97->scaps && ac97_is_audio(ac97)) {
                 reg = snd_ac97_read(ac97, AC97_EXTENDED_STATUS);
                 if (ac97->scaps & AC97_SCAP_SURROUND_DAC) 
                         reg &= ~AC97_EA_PRJ;
@@ -2167,13 +2140,6 @@ int snd_ac97_mixer(ac97_bus_t *bus, ac97_template_t *template, ac97_t **rac97)
                 return err;
         }
         *rac97 = ac97;
-
-        if (bus->shared_type) {
-                down(&shared_codec_mutex);
-                shared_codec[bus->shared_type-1][ac97->num] = ac97;
-                up(&shared_codec_mutex);
-        }
-
         return 0;
 }
 
diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c
index 241eacf1e652..cb1741102bbc 100644
--- a/sound/pci/atiixp.c
+++ b/sound/pci/atiixp.c
@@ -1372,7 +1372,6 @@ static int __devinit snd_atiixp_mixer_new(atiixp_t *chip, int clock, const char
         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
                 return err;
         pbus->clock = clock;
-        pbus->shared_type = AC97_SHARED_TYPE_ATIIXP;    /* shared with modem driver */
         chip->ac97_bus = pbus;
 
         codec_count = 0;
diff --git a/sound/pci/atiixp_modem.c b/sound/pci/atiixp_modem.c
index c020c53a0cda..a88a6f372050 100644
--- a/sound/pci/atiixp_modem.c
+++ b/sound/pci/atiixp_modem.c
@@ -1068,7 +1068,6 @@ static int __devinit snd_atiixp_mixer_new(atiixp_t *chip, int clock)
         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
                 return err;
         pbus->clock = clock;
-        pbus->shared_type = AC97_SHARED_TYPE_ATIIXP;    /* shared with audio driver */
         chip->ac97_bus = pbus;
 
         codec_count = 0;
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 1a96198a17ae..0d11cf7d569a 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -2022,7 +2022,6 @@ static int __devinit snd_intel8x0_mixer(intel8x0_t *chip, int ac97_clock, const
         if ((err = snd_ac97_bus(chip->card, 0, ops, chip, &pbus)) < 0)
                 goto __err;
         pbus->private_free = snd_intel8x0_mixer_free_ac97_bus;
-        pbus->shared_type = AC97_SHARED_TYPE_ICH;       /* shared with modem driver */
         if (ac97_clock >= 8000 && ac97_clock <= 48000)
                 pbus->clock = ac97_clock;
         /* FIXME: my test board doesn't work well with VRA... */
diff --git a/sound/pci/intel8x0m.c b/sound/pci/intel8x0m.c
index 2ac1fec5059a..15364d27804d 100644
--- a/sound/pci/intel8x0m.c
+++ b/sound/pci/intel8x0m.c
@@ -855,7 +855,6 @@ static int __devinit snd_intel8x0_mixer(intel8x0_t *chip, int ac97_clock)
         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
                 goto __err;
         pbus->private_free = snd_intel8x0_mixer_free_ac97_bus;
-        pbus->shared_type = AC97_SHARED_TYPE_ICH;       /* shared with audio driver */
         if (ac97_clock >= 8000 && ac97_clock <= 48000)
                 pbus->clock = ac97_clock;
         chip->ac97_bus = pbus;
diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c
index 3c0205b91e10..ecc4836ba8de 100644
--- a/sound/pci/via82xx.c
+++ b/sound/pci/via82xx.c
@@ -1616,12 +1616,12 @@ static int __devinit snd_via82xx_mixer_new(via82xx_t *chip, const char *quirk_ov
                 return err;
         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
         chip->ac97_bus->clock = chip->ac97_clock;
-        chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
 
         memset(&ac97, 0, sizeof(ac97));
         ac97.private_data = chip;
         ac97.private_free = snd_via82xx_mixer_free_ac97;
         ac97.pci = chip->pci;
+        ac97.scaps = AC97_SCAP_SKIP_MODEM;
         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
                 return err;
 
diff --git a/sound/pci/via82xx_modem.c b/sound/pci/via82xx_modem.c
index 034dc1c6262a..c3ab8fbf582c 100644
--- a/sound/pci/via82xx_modem.c
+++ b/sound/pci/via82xx_modem.c
@@ -879,7 +879,6 @@ static int __devinit snd_via82xx_mixer_new(via82xx_t *chip)
                 return err;
         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
         chip->ac97_bus->clock = chip->ac97_clock;
-        chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
 
         memset(&ac97, 0, sizeof(ac97));
         ac97.private_data = chip;