[ALSA] Add PC-speaker sound driver

Added PC-speaker sound driver (snd-pcsp).

Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 143 insertions, 0 deletions

diff --git a/sound/drivers/pcsp/pcsp_mixer.c b/sound/drivers/pcsp/pcsp_mixer.c
new file mode 100644
index 00000000000..64a695fef74
--- /dev/null
+++ b/sound/drivers/pcsp/pcsp_mixer.c
@@ -0,0 +1,143 @@
+/*
+ * PC-Speaker driver for Linux
+ *
+ * Mixer implementation.
+ * Copyright (C) 2001-2008  Stas Sergeev
+ */
+
+#include <sound/core.h>
+#include <sound/control.h>
+#include "pcsp.h"
+
+
+static int pcsp_enable_info(struct snd_kcontrol *kcontrol,
+			    struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+static int pcsp_enable_get(struct snd_kcontrol *kcontrol,
+			   struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.integer.value[0] = chip->enable;
+	return 0;
+}
+
+static int pcsp_enable_put(struct snd_kcontrol *kcontrol,
+			   struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
+	int changed = 0;
+	int enab = ucontrol->value.integer.value[0];
+	if (enab != chip->enable) {
+		chip->enable = enab;
+		changed = 1;
+	}
+	return changed;
+}
+
+static int pcsp_treble_info(struct snd_kcontrol *kcontrol,
+			    struct snd_ctl_elem_info *uinfo)
+{
+	struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 1;
+	uinfo->value.enumerated.items = chip->max_treble + 1;
+	if (uinfo->value.enumerated.item > chip->max_treble)
+		uinfo->value.enumerated.item = chip->max_treble;
+	sprintf(uinfo->value.enumerated.name, "%d", PCSP_RATE());
+	return 0;
+}
+
+static int pcsp_treble_get(struct snd_kcontrol *kcontrol,
+			   struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.enumerated.item[0] = chip->treble;
+	return 0;
+}
+
+static int pcsp_treble_put(struct snd_kcontrol *kcontrol,
+			   struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
+	int changed = 0;
+	int treble = ucontrol->value.enumerated.item[0];
+	if (treble != chip->treble) {
+		chip->treble = treble;
+#if PCSP_DEBUG
+		printk(KERN_INFO "PCSP: rate set to %i\n", PCSP_RATE());
+#endif
+		changed = 1;
+	}
+	return changed;
+}
+
+static int pcsp_pcspkr_info(struct snd_kcontrol *kcontrol,
+			    struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+static int pcsp_pcspkr_get(struct snd_kcontrol *kcontrol,
+			   struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.integer.value[0] = chip->pcspkr;
+	return 0;
+}
+
+static int pcsp_pcspkr_put(struct snd_kcontrol *kcontrol,
+			   struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
+	int changed = 0;
+	int spkr = ucontrol->value.integer.value[0];
+	if (spkr != chip->pcspkr) {
+		chip->pcspkr = spkr;
+		changed = 1;
+	}
+	return changed;
+}
+
+#define PCSP_MIXER_CONTROL(ctl_type, ctl_name) \
+{ \
+	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER, \
+	.name =		ctl_name, \
+	.info =		pcsp_##ctl_type##_info, \
+	.get =		pcsp_##ctl_type##_get, \
+	.put =		pcsp_##ctl_type##_put, \
+}
+
+static struct snd_kcontrol_new __devinitdata snd_pcsp_controls[] = {
+	PCSP_MIXER_CONTROL(enable, "Master Playback Switch"),
+	PCSP_MIXER_CONTROL(treble, "BaseFRQ Playback Volume"),
+	PCSP_MIXER_CONTROL(pcspkr, "PC Speaker Playback Switch"),
+};
+
+int __devinit snd_pcsp_new_mixer(struct snd_pcsp *chip)
+{
+	struct snd_card *card = chip->card;
+	int i, err;
+
+	for (i = 0; i < ARRAY_SIZE(snd_pcsp_controls); i++) {
+		err = snd_ctl_add(card,
+				 snd_ctl_new1(snd_pcsp_controls + i,
+					      chip));
+		if (err < 0)
+			return err;
+	}
+
+	strcpy(card->mixername, "PC-Speaker");
+
+	return 0;
+}