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Diffstat (limited to 'sound/pci/ice1712/amp.c')
-rw-r--r--sound/pci/ice1712/amp.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/sound/pci/ice1712/amp.c b/sound/pci/ice1712/amp.c
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+++ b/sound/pci/ice1712/amp.c
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+/*
+ * ALSA driver for ICEnsemble VT1724 (Envy24HT)
+ *
+ * Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000
+ *
+ * Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+
+#include "ice1712.h"
+#include "amp.h"
+
+
+static int __devinit snd_vt1724_amp_init(ice1712_t *ice)
+{
+ /* only use basic functionality for now */
+
+ ice->num_total_dacs = 2; /* only PSDOUT0 is connected */
+ ice->num_total_adcs = 2;
+
+ return 0;
+}
+
+static int __devinit snd_vt1724_amp_add_controls(ice1712_t *ice)
+{
+ /* we use pins 39 and 41 of the VT1616 for left and right read outputs */
+ snd_ac97_write_cache(ice->ac97, 0x5a, snd_ac97_read(ice->ac97, 0x5a) & ~0x8000);
+ return 0;
+}
+
+
+/* entry point */
+struct snd_ice1712_card_info snd_vt1724_amp_cards[] __devinitdata = {
+ {
+ .subvendor = VT1724_SUBDEVICE_AUDIO2000,
+ .name = "AMP Ltd AUDIO2000",
+ .model = "amp2000",
+ .chip_init = snd_vt1724_amp_init,
+ .build_controls = snd_vt1724_amp_add_controls,
+ },
+ { } /* terminator */
+};
+