patch-2.1.94 linux/drivers/sound/vidc_mixer.c

• Lines: 152
• Date: Wed Apr 8 17:24:48 1998
• Orig file: v2.1.93/linux/drivers/sound/vidc_mixer.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.93/linux/drivers/sound/vidc_mixer.c linux/drivers/sound/vidc_mixer.c
@@ -0,0 +1,151 @@
+/*
+ * drivers/sound/vidc_mixer.c
+ *
+ * Mixer routines for VIDC
+ *
+ * Copyright (C) 1997 Russell King <rmk@arm.uk.linux.org>
+ */
+
+#include <linux/config.h>
+#include "sound_config.h"
+
+#include "vidc.h"
+
+int vidc_volume;
+
+static int vidc_get_volume(void)
+{
+	return vidc_volume;
+}
+
+static int vidc_set_volume(int newvol)
+{
+	vidc_volume = newvol;
+/*  printk ("vidc_set_volume: %X\n", newvol); */
+	return newvol;
+}
+
+static int vidc_default_mixer_ioctl(int dev, unsigned int cmd, caddr_t arg)
+{
+	int ret;
+
+	switch (cmd)
+	{
+		case SOUND_MIXER_READ_VOLUME:
+			ret = vidc_get_volume();
+			break;
+
+		case SOUND_MIXER_WRITE_VOLUME:
+			if (get_user(ret, (int *) arg))
+				return -EINVAL;
+			ret = vidc_set_volume(ret);
+			break;
+
+		case SOUND_MIXER_READ_BASS:
+		case SOUND_MIXER_WRITE_BASS:
+		case SOUND_MIXER_READ_TREBLE:
+		case SOUND_MIXER_WRITE_TREBLE:
+			ret = 50;
+			break;
+
+		case SOUND_MIXER_READ_SYNTH:
+			ret = vidc_synth_get_volume();
+			break;
+
+		case SOUND_MIXER_WRITE_SYNTH:
+			if (get_user(ret, (int *) arg))
+				return -EINVAL;
+			ret = vidc_synth_set_volume(ret);
+			break;
+
+		case SOUND_MIXER_READ_PCM:
+			ret = vidc_audio_get_volume();
+			break;
+
+		case SOUND_MIXER_WRITE_PCM:
+			if (get_user(ret, (int *) arg))
+				return -EINVAL;
+			ret = vidc_audio_set_volume(ret);
+			break;
+
+		case SOUND_MIXER_READ_SPEAKER:
+			ret = 100;
+			break;
+
+		case SOUND_MIXER_WRITE_SPEAKER:
+			ret = 100;
+			break;
+
+		case SOUND_MIXER_READ_LINE:
+		case SOUND_MIXER_WRITE_LINE:
+		case SOUND_MIXER_READ_MIC:
+		case SOUND_MIXER_WRITE_MIC:
+			ret = 0;
+			break;
+
+		case SOUND_MIXER_READ_CD:
+		case SOUND_MIXER_WRITE_CD:
+			ret = 100 | (100 << 8);
+			break;
+
+		case SOUND_MIXER_READ_IMIX:
+		case SOUND_MIXER_WRITE_IMIX:
+		case SOUND_MIXER_READ_ALTPCM:
+		case SOUND_MIXER_WRITE_ALTPCM:
+		case SOUND_MIXER_READ_LINE1:
+		case SOUND_MIXER_WRITE_LINE1:
+		case SOUND_MIXER_READ_LINE2:
+		case SOUND_MIXER_WRITE_LINE2:
+		case SOUND_MIXER_READ_LINE3:
+		case SOUND_MIXER_WRITE_LINE3:
+			ret = 0;
+			break;
+
+		case SOUND_MIXER_READ_RECSRC:
+			ret = 0;
+			break;
+
+		case SOUND_MIXER_WRITE_RECSRC:
+			return -EINVAL;
+			break;
+
+		case SOUND_MIXER_READ_DEVMASK:
+			ret = SOUND_MASK_VOLUME | SOUND_MASK_PCM | SOUND_MASK_SYNTH;
+			break;
+
+		case SOUND_MIXER_READ_RECMASK:
+			ret = 0;
+			break;
+
+		case SOUND_MIXER_READ_STEREODEVS:
+			ret = SOUND_MASK_VOLUME | SOUND_MASK_PCM | SOUND_MASK_SYNTH;
+			break;
+
+		case SOUND_MIXER_READ_CAPS:
+			ret = 0;
+			break;
+
+		case SOUND_MIXER_READ_MUTE:
+			return -EINVAL;
+			break;
+
+		default:
+			return -EINVAL;
+			break;
+	}
+	return put_user(ret, (int *) arg);
+}
+
+static struct mixer_operations vidc_mixer_operations = {
+	"VIDC",
+	"VIDCsound",
+	vidc_default_mixer_ioctl	/* ioctl                */
+};
+
+void vidc_mixer_init(struct address_info *hw_config)
+{
+	int vidc_mixer = sound_alloc_mixerdev();
+	vidc_volume = 100 | (100 << 8);
+	if (num_mixers < MAX_MIXER_DEV)
+		mixer_devs[vidc_mixer] = &vidc_mixer_operations;
+}