4 files changed, 48 insertions, 20 deletions

diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 6de56d134abb..780c213c600f 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -1454,6 +1454,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for internal PC-Speaker.
 
+    nopcm       - Disable PC-Speaker PCM sound. Only beeps remain.
     nforce_wa   - enable NForce chipset workaround. Expect bad sound.
 
     This module supports system beeps, some kind of PCM playback and
diff --git a/sound/drivers/pcsp/pcsp.c b/sound/drivers/pcsp/pcsp.c
index b60cef257b58..f165c77d6273 100644
--- a/sound/drivers/pcsp/pcsp.c
+++ b/sound/drivers/pcsp/pcsp.c
@@ -26,6 +26,7 @@ MODULE_ALIAS("platform:pcspkr");
 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
 static int enable = SNDRV_DEFAULT_ENABLE1;      /* Enable this card */
+static int nopcm;       /* Disable PCM capability of the driver */
 
 module_param(index, int, 0444);
 MODULE_PARM_DESC(index, "Index value for pcsp soundcard.");
@@ -33,6 +34,8 @@ module_param(id, charp, 0444);
 MODULE_PARM_DESC(id, "ID string for pcsp soundcard.");
 module_param(enable, bool, 0444);
 MODULE_PARM_DESC(enable, "Enable PC-Speaker sound.");
+module_param(nopcm, bool, 0444);
+MODULE_PARM_DESC(nopcm, "Disable PC-Speaker PCM sound. Only beeps remain.");
 
 struct snd_pcsp pcsp_chip;
 
@@ -43,13 +46,16 @@ static int __devinit snd_pcsp_create(struct snd_card *card)
         int err;
         int div, min_div, order;
 
-        hrtimer_get_res(CLOCK_MONOTONIC, &tp);
-        if (tp.tv_sec || tp.tv_nsec > PCSP_MAX_PERIOD_NS) {
-                printk(KERN_ERR "PCSP: Timer resolution is not sufficient "
-                       "(%linS)\n", tp.tv_nsec);
-                printk(KERN_ERR "PCSP: Make sure you have HPET and ACPI "
-                       "enabled.\n");
-                return -EIO;
+        if (!nopcm) {
+                hrtimer_get_res(CLOCK_MONOTONIC, &tp);
+                if (tp.tv_sec || tp.tv_nsec > PCSP_MAX_PERIOD_NS) {
+                        printk(KERN_ERR "PCSP: Timer resolution is not sufficient "
+                                "(%linS)\n", tp.tv_nsec);
+                        printk(KERN_ERR "PCSP: Make sure you have HPET and ACPI "
+                                "enabled.\n");
+                        printk(KERN_ERR "PCSP: Turned into nopcm mode.\n");
+                        nopcm = 1;
+                }
         }
 
         if (loops_per_jiffy >= PCSP_MIN_LPJ && tp.tv_nsec <= PCSP_MIN_PERIOD_NS)
@@ -107,12 +113,14 @@ static int __devinit snd_card_pcsp_probe(int devnum, struct device *dev)
                 snd_card_free(card);
                 return err;
         }
-        err = snd_pcsp_new_pcm(&pcsp_chip);
-        if (err < 0) {
-                snd_card_free(card);
-                return err;
+        if (!nopcm) {
+                err = snd_pcsp_new_pcm(&pcsp_chip);
+                if (err < 0) {
+                        snd_card_free(card);
+                        return err;
+                }
         }
-        err = snd_pcsp_new_mixer(&pcsp_chip);
+        err = snd_pcsp_new_mixer(&pcsp_chip, nopcm);
         if (err < 0) {
                 snd_card_free(card);
                 return err;
diff --git a/sound/drivers/pcsp/pcsp.h b/sound/drivers/pcsp/pcsp.h
index 174dd2ff0f22..1e123077923d 100644
--- a/sound/drivers/pcsp/pcsp.h
+++ b/sound/drivers/pcsp/pcsp.h
@@ -83,6 +83,6 @@ extern enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle);
 extern void pcsp_sync_stop(struct snd_pcsp *chip);
 
 extern int snd_pcsp_new_pcm(struct snd_pcsp *chip);
-extern int snd_pcsp_new_mixer(struct snd_pcsp *chip);
+extern int snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm);
 
 #endif
diff --git a/sound/drivers/pcsp/pcsp_mixer.c b/sound/drivers/pcsp/pcsp_mixer.c
index 903bc846763f..02e05552632b 100644
--- a/sound/drivers/pcsp/pcsp_mixer.c
+++ b/sound/drivers/pcsp/pcsp_mixer.c
@@ -119,24 +119,43 @@ static int pcsp_pcspkr_put(struct snd_kcontrol *kcontrol,
         .put =          pcsp_##ctl_type##_put, \
 }
 
-static struct snd_kcontrol_new __devinitdata snd_pcsp_controls[] = {
+static struct snd_kcontrol_new __devinitdata snd_pcsp_controls_pcm[] = {
         PCSP_MIXER_CONTROL(enable, "Master Playback Switch"),
         PCSP_MIXER_CONTROL(treble, "BaseFRQ Playback Volume"),
+};
+
+static struct snd_kcontrol_new __devinitdata snd_pcsp_controls_spkr[] = {
         PCSP_MIXER_CONTROL(pcspkr, "PC Speaker Playback Switch"),
 };
 
-int __devinit snd_pcsp_new_mixer(struct snd_pcsp *chip)
+static int __devinit snd_pcsp_ctls_add(struct snd_pcsp *chip,
+        struct snd_kcontrol_new *ctls, int num)
 {
-        struct snd_card *card = chip->card;
         int i, err;
+        struct snd_card *card = chip->card;
+        for (i = 0; i < num; i++) {
+                err = snd_ctl_add(card, snd_ctl_new1(ctls + i, chip));
+                if (err < 0)
+                        return err;
+        }
+        return 0;
+}
+
+int __devinit snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm)
+{
+        int err;
+        struct snd_card *card = chip->card;
 
-        for (i = 0; i < ARRAY_SIZE(snd_pcsp_controls); i++) {
-                err = snd_ctl_add(card,
-                                 snd_ctl_new1(snd_pcsp_controls + i,
-                                              chip));
+        if (!nopcm) {
+                err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_pcm,
+                        ARRAY_SIZE(snd_pcsp_controls_pcm));
                 if (err < 0)
                         return err;
         }
+        err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_spkr,
+                ARRAY_SIZE(snd_pcsp_controls_spkr));
+        if (err < 0)
+                return err;
 
         strcpy(card->mixername, "PC-Speaker");