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-rw-r--r--sound/usb/6fire/control.c275
1 files changed, 275 insertions, 0 deletions
diff --git a/sound/usb/6fire/control.c b/sound/usb/6fire/control.c
new file mode 100644
index 00000000000..24846351118
--- /dev/null
+++ b/sound/usb/6fire/control.c
@@ -0,0 +1,275 @@
+/*
+ * Linux driver for TerraTec DMX 6Fire USB
+ *
+ * Mixer control
+ *
+ * Author: Torsten Schenk <torsten.schenk@zoho.com>
+ * Created: Jan 01, 2011
+ * Version: 0.3.0
+ * Copyright: (C) Torsten Schenk
+ *
+ * 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.
+ */
+
+#include <linux/interrupt.h>
+#include <sound/control.h>
+
+#include "control.h"
+#include "comm.h"
+#include "chip.h"
+
+static char *opt_coax_texts[2] = { "Optical", "Coax" };
+static char *line_phono_texts[2] = { "Line", "Phono" };
+
+/*
+ * calculated with $value\[i\] = 128 \cdot sqrt[3]{\frac{i}{128}}$
+ * this is done because the linear values cause rapid degredation
+ * of volume in the uppermost region.
+ */
+static const u8 log_volume_table[128] = {
+ 0x00, 0x19, 0x20, 0x24, 0x28, 0x2b, 0x2e, 0x30, 0x32, 0x34,
+ 0x36, 0x38, 0x3a, 0x3b, 0x3d, 0x3e, 0x40, 0x41, 0x42, 0x43,
+ 0x44, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e,
+ 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x53, 0x54, 0x55, 0x56,
+ 0x56, 0x57, 0x58, 0x58, 0x59, 0x5a, 0x5b, 0x5b, 0x5c, 0x5c,
+ 0x5d, 0x5e, 0x5e, 0x5f, 0x60, 0x60, 0x61, 0x61, 0x62, 0x62,
+ 0x63, 0x63, 0x64, 0x65, 0x65, 0x66, 0x66, 0x67, 0x67, 0x68,
+ 0x68, 0x69, 0x69, 0x6a, 0x6a, 0x6b, 0x6b, 0x6c, 0x6c, 0x6c,
+ 0x6d, 0x6d, 0x6e, 0x6e, 0x6f, 0x6f, 0x70, 0x70, 0x70, 0x71,
+ 0x71, 0x72, 0x72, 0x73, 0x73, 0x73, 0x74, 0x74, 0x75, 0x75,
+ 0x75, 0x76, 0x76, 0x77, 0x77, 0x77, 0x78, 0x78, 0x78, 0x79,
+ 0x79, 0x7a, 0x7a, 0x7a, 0x7b, 0x7b, 0x7b, 0x7c, 0x7c, 0x7c,
+ 0x7d, 0x7d, 0x7d, 0x7e, 0x7e, 0x7e, 0x7f, 0x7f };
+
+/*
+ * data that needs to be sent to device. sets up card internal stuff.
+ * values dumped from windows driver and filtered by trial'n'error.
+ */
+static const struct {
+ u8 type;
+ u8 reg;
+ u8 value;
+}
+init_data[] = {
+ { 0x22, 0x00, 0x00 }, { 0x20, 0x00, 0x08 }, { 0x22, 0x01, 0x01 },
+ { 0x20, 0x01, 0x08 }, { 0x22, 0x02, 0x00 }, { 0x20, 0x02, 0x08 },
+ { 0x22, 0x03, 0x00 }, { 0x20, 0x03, 0x08 }, { 0x22, 0x04, 0x00 },
+ { 0x20, 0x04, 0x08 }, { 0x22, 0x05, 0x01 }, { 0x20, 0x05, 0x08 },
+ { 0x22, 0x04, 0x01 }, { 0x12, 0x04, 0x00 }, { 0x12, 0x05, 0x00 },
+ { 0x12, 0x0d, 0x78 }, { 0x12, 0x21, 0x82 }, { 0x12, 0x22, 0x80 },
+ { 0x12, 0x23, 0x00 }, { 0x12, 0x06, 0x02 }, { 0x12, 0x03, 0x00 },
+ { 0x12, 0x02, 0x00 }, { 0x22, 0x03, 0x01 },
+ { 0 } /* TERMINATING ENTRY */
+};
+
+static void usb6fire_control_master_vol_update(struct control_runtime *rt)
+{
+ struct comm_runtime *comm_rt = rt->chip->comm;
+ if (comm_rt) {
+ /* set volume */
+ comm_rt->write8(comm_rt, 0x12, 0x0f, 0x7f -
+ log_volume_table[rt->master_vol]);
+ /* unmute */
+ comm_rt->write8(comm_rt, 0x12, 0x0e, 0x00);
+ }
+}
+
+static void usb6fire_control_line_phono_update(struct control_runtime *rt)
+{
+ struct comm_runtime *comm_rt = rt->chip->comm;
+ if (comm_rt) {
+ comm_rt->write8(comm_rt, 0x22, 0x02, rt->line_phono_switch);
+ comm_rt->write8(comm_rt, 0x21, 0x02, rt->line_phono_switch);
+ }
+}
+
+static void usb6fire_control_opt_coax_update(struct control_runtime *rt)
+{
+ struct comm_runtime *comm_rt = rt->chip->comm;
+ if (comm_rt) {
+ comm_rt->write8(comm_rt, 0x22, 0x00, rt->opt_coax_switch);
+ comm_rt->write8(comm_rt, 0x21, 0x00, rt->opt_coax_switch);
+ }
+}
+
+static int usb6fire_control_master_vol_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 127;
+ return 0;
+}
+
+static int usb6fire_control_master_vol_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
+ int changed = 0;
+ if (rt->master_vol != ucontrol->value.integer.value[0]) {
+ rt->master_vol = ucontrol->value.integer.value[0];
+ usb6fire_control_master_vol_update(rt);
+ changed = 1;
+ }
+ return changed;
+}
+
+static int usb6fire_control_master_vol_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
+ ucontrol->value.integer.value[0] = rt->master_vol;
+ return 0;
+}
+
+static int usb6fire_control_line_phono_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = 1;
+ uinfo->value.enumerated.items = 2;
+ if (uinfo->value.enumerated.item > 1)
+ uinfo->value.enumerated.item = 1;
+ strcpy(uinfo->value.enumerated.name,
+ line_phono_texts[uinfo->value.enumerated.item]);
+ return 0;
+}
+
+static int usb6fire_control_line_phono_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
+ int changed = 0;
+ if (rt->line_phono_switch != ucontrol->value.integer.value[0]) {
+ rt->line_phono_switch = ucontrol->value.integer.value[0];
+ usb6fire_control_line_phono_update(rt);
+ changed = 1;
+ }
+ return changed;
+}
+
+static int usb6fire_control_line_phono_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
+ ucontrol->value.integer.value[0] = rt->line_phono_switch;
+ return 0;
+}
+
+static int usb6fire_control_opt_coax_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = 1;
+ uinfo->value.enumerated.items = 2;
+ if (uinfo->value.enumerated.item > 1)
+ uinfo->value.enumerated.item = 1;
+ strcpy(uinfo->value.enumerated.name,
+ opt_coax_texts[uinfo->value.enumerated.item]);
+ return 0;
+}
+
+static int usb6fire_control_opt_coax_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
+ int changed = 0;
+
+ if (rt->opt_coax_switch != ucontrol->value.enumerated.item[0]) {
+ rt->opt_coax_switch = ucontrol->value.enumerated.item[0];
+ usb6fire_control_opt_coax_update(rt);
+ changed = 1;
+ }
+ return changed;
+}
+
+static int usb6fire_control_opt_coax_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
+ ucontrol->value.enumerated.item[0] = rt->opt_coax_switch;
+ return 0;
+}
+
+static struct __devinitdata snd_kcontrol_new elements[] = {
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Master Playback Volume",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = usb6fire_control_master_vol_info,
+ .get = usb6fire_control_master_vol_get,
+ .put = usb6fire_control_master_vol_put
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Line/Phono Capture Route",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = usb6fire_control_line_phono_info,
+ .get = usb6fire_control_line_phono_get,
+ .put = usb6fire_control_line_phono_put
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Opt/Coax Capture Route",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = usb6fire_control_opt_coax_info,
+ .get = usb6fire_control_opt_coax_get,
+ .put = usb6fire_control_opt_coax_put
+ },
+ {}
+};
+
+int __devinit usb6fire_control_init(struct sfire_chip *chip)
+{
+ int i;
+ int ret;
+ struct control_runtime *rt = kzalloc(sizeof(struct control_runtime),
+ GFP_KERNEL);
+ struct comm_runtime *comm_rt = chip->comm;
+
+ if (!rt)
+ return -ENOMEM;
+
+ rt->chip = chip;
+
+ i = 0;
+ while (init_data[i].type) {
+ comm_rt->write8(comm_rt, init_data[i].type, init_data[i].reg,
+ init_data[i].value);
+ i++;
+ }
+
+ usb6fire_control_opt_coax_update(rt);
+ usb6fire_control_line_phono_update(rt);
+ usb6fire_control_master_vol_update(rt);
+
+ i = 0;
+ while (elements[i].name) {
+ ret = snd_ctl_add(chip->card, snd_ctl_new1(&elements[i], rt));
+ if (ret < 0) {
+ kfree(rt);
+ snd_printk(KERN_ERR PREFIX "cannot add control.\n");
+ return ret;
+ }
+ i++;
+ }
+
+ chip->control = rt;
+ return 0;
+}
+
+void usb6fire_control_abort(struct sfire_chip *chip)
+{}
+
+void usb6fire_control_destroy(struct sfire_chip *chip)
+{
+ kfree(chip->control);
+ chip->control = NULL;
+}