1 files changed, 83 insertions, 0 deletions
diff --git a/sound/pci/ice1712/amp.c b/sound/pci/ice1712/amp.c
new file mode 100644
index 000000000..a7b496de6
--- /dev/null
+++ b/sound/pci/ice1712/amp.c
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
+ *
+ *   Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000
+ *
+ *	Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
+ */      
+
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <sound/core.h>
+
+#include "ice1712.h"
+#include "envy24ht.h"
+#include "amp.h"
+
+static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
+{
+	unsigned short cval;
+	cval = (reg << 9) | val;
+	snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
+}
+
+static int snd_vt1724_amp_init(struct snd_ice1712 *ice)
+{
+	static const unsigned short wm_inits[] = {
+		WM_ATTEN_L,	0x0000,	/* 0 db */
+		WM_ATTEN_R,	0x0000,	/* 0 db */
+		WM_DAC_CTRL,	0x0008,	/* 24bit I2S */
+		WM_INT_CTRL,	0x0001, /* 24bit I2S */	
+	};
+
+	unsigned int i;
+
+	/* only use basic functionality for now */
+
+	/* VT1616 6ch codec connected to PSDOUT0 using packed mode */
+	ice->num_total_dacs = 6;
+	ice->num_total_adcs = 2;
+
+	/* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4
+	   (shared with the SPDIF output). Mixer control for this codec
+	   is not yet supported. */
+	if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) {
+		for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
+			wm_put(ice, wm_inits[i], wm_inits[i+1]);
+	}
+
+	return 0;
+}
+
+static int snd_vt1724_amp_add_controls(struct snd_ice1712 *ice)
+{
+	if (ice->ac97)
+		/* 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[] = {
+	{
+		.subvendor = VT1724_SUBDEVICE_AV710,
+		.name = "Chaintech AV-710",
+		.model = "av710",
+		.chip_init = snd_vt1724_amp_init,
+		.build_controls = snd_vt1724_amp_add_controls,
+	},
+	{
+		.subvendor = VT1724_SUBDEVICE_AUDIO2000,
+		.name = "AMP Ltd AUDIO2000",
+		.model = "amp2000",
+		.chip_init = snd_vt1724_amp_init,
+		.build_controls = snd_vt1724_amp_add_controls,
+	},
+	{ } /* terminator */
+};
+