ALSA: snd-powermac: HP detection for 1st iMac G3 SL

Correct headphone detection for 1st generation iMac G3 Slot-loading (Screamer).

This patch fixes the regression in the recent snd-powermac which
doesn't support some G3/G4 PowerMacs:
    http://lkml.org/lkml/2008/10/1/220

Signed-off-by: Risto Suominen <Risto.Suominen@gmail.com>
Tested-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: stable@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 22 insertions, 9 deletions

diff --git a/sound/ppc/awacs.c b/sound/ppc/awacs.c
index 543d4f1784a5..106c48225bba 100644
--- a/sound/ppc/awacs.c
+++ b/sound/ppc/awacs.c
@@ -695,7 +695,10 @@ static struct snd_kcontrol_new snd_pmac_awacs_speaker_vol[] __initdata = {
 static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw __initdata =
 AWACS_SWITCH("PC Speaker Playback Switch", 1, SHIFT_SPKMUTE, 1);
 
-static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw_imac __initdata =
+static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw_imac1 __initdata =
+AWACS_SWITCH("PC Speaker Playback Switch", 1, SHIFT_PAROUT1, 1);
+
+static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw_imac2 __initdata =
 AWACS_SWITCH("PC Speaker Playback Switch", 1, SHIFT_PAROUT1, 0);
 
 
@@ -772,12 +775,12 @@ static void snd_pmac_awacs_resume(struct snd_pmac *chip)
 
 #define IS_PM7500 (machine_is_compatible("AAPL,7500"))
 #define IS_BEIGE (machine_is_compatible("AAPL,Gossamer"))
-#define IS_IMAC (machine_is_compatible("PowerMac2,1") \
-                || machine_is_compatible("PowerMac2,2") \
+#define IS_IMAC1 (machine_is_compatible("PowerMac2,1"))
+#define IS_IMAC2 (machine_is_compatible("PowerMac2,2") \
                 || machine_is_compatible("PowerMac4,1"))
 #define IS_G4AGP (machine_is_compatible("PowerMac3,1"))
 
-static int imac;
+static int imac1, imac2;
 
 #ifdef PMAC_SUPPORT_AUTOMUTE
 /*
@@ -823,13 +826,18 @@ static void snd_pmac_awacs_update_automute(struct snd_pmac *chip, int do_notify)
                 {
                         int reg = chip->awacs_reg[1]
                                 | (MASK_HDMUTE | MASK_SPKMUTE);
-                        if (imac) {
+                        if (imac1) {
+                                reg &= ~MASK_SPKMUTE;
+                                reg |= MASK_PAROUT1;
+                        } else if (imac2) {
                                 reg &= ~MASK_SPKMUTE;
                                 reg &= ~MASK_PAROUT1;
                         }
                         if (snd_pmac_awacs_detect_headphone(chip))
                                 reg &= ~MASK_HDMUTE;
-                        else if (imac)
+                        else if (imac1)
+                                reg &= ~MASK_PAROUT1;
+                        else if (imac2)
                                 reg |= MASK_PAROUT1;
                         else
                                 reg &= ~MASK_SPKMUTE;
@@ -859,9 +867,12 @@ snd_pmac_awacs_init(struct snd_pmac *chip)
         int pm7500 = IS_PM7500;
         int beige = IS_BEIGE;
         int g4agp = IS_G4AGP;
+        int imac;
         int err, vol;
 
-        imac = IS_IMAC;
+        imac1 = IS_IMAC1;
+        imac2 = IS_IMAC2;
+        imac = imac1 || imac2;
         /* looks like MASK_GAINLINE triggers something, so we set here
          * as start-up
          */
@@ -1017,8 +1028,10 @@ snd_pmac_awacs_init(struct snd_pmac *chip)
                                         snd_pmac_awacs_speaker_vol);
                 if (err < 0)
                         return err;
-                chip->speaker_sw_ctl = snd_ctl_new1(imac
-                                ? &snd_pmac_awacs_speaker_sw_imac
+                chip->speaker_sw_ctl = snd_ctl_new1(imac1
+                                ? &snd_pmac_awacs_speaker_sw_imac1
+                                : imac2
+                                ? &snd_pmac_awacs_speaker_sw_imac2
                                 : &snd_pmac_awacs_speaker_sw, chip);
                 err = snd_ctl_add(chip->card, chip->speaker_sw_ctl);
                 if (err < 0)