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-rw-r--r--sound/pci/ice1712/amp.c83
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 */
+};
+