ALSA: firewire-digi00x: add skeleton for Digi 002/003 family

This commit adds a new driver for Digidesign 002/003 family. This commit
just creates/removes card instance according to bus event. More functions
will be added in following commits.

Digidesign 002/003 family consists of:
 * Agere FW802B for IEEE 1394 PHY layer
 * PDI 1394L40 for IEEE 1394 LINK layer and IEC 61883 interface
 * ALTERA ACEX EP1K50 for IEC 61883 layer and DSP controller
 * ADSP-21065L for signal processing

[minor cleanup using skip_spaces() by tiwai]

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/firewire/Kconfig b/sound/firewire/Kconfig
index 8850b7de1d380585a784e6f72a5dccc5812b5ad4..74f17a8263dbcf45284d648060d22d728707e685 100644 (file)
--- a/sound/firewire/Kconfig
+++ b/sound/firewire/Kconfig
@@ -120,4 +120,18 @@ config SND_BEBOB
           To compile this driver as a module, choose M here: the module
           will be called snd-bebob.
 
+config SND_FIREWIRE_DIGI00X
+       tristate "Digidesign Digi 002/003 family support"
+       select SND_FIREWIRE_LIB
+       help
+        Say Y here to include support for Digidesign Digi 002/003 family.
+         * Digi 002 Console
+         * Digi 002 Rack
+         * Digi 003 Console
+         * Digi 003 Rack
+         * Digi 003 Rack+
+
+        To compile this driver as a module, choose M here: the module
+        will be called snd-firewire-digi00x.
+
 endif # SND_FIREWIRE

diff --git a/sound/firewire/Makefile b/sound/firewire/Makefile
index 6a8a71371efd5f4e34eae5965a93f182cee71277..5325d15d701872cc485edc3ed9c72f71f42198ce 100644 (file)
--- a/sound/firewire/Makefile
+++ b/sound/firewire/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_SND_ISIGHT) += snd-isight.o
 obj-$(CONFIG_SND_SCS1X) += snd-scs1x.o
 obj-$(CONFIG_SND_FIREWORKS) += fireworks/
 obj-$(CONFIG_SND_BEBOB) += bebob/
+obj-$(CONFIG_SND_FIREWIRE_DIGI00X) += digi00x/

diff --git a/sound/firewire/digi00x/Makefile b/sound/firewire/digi00x/Makefile
new file mode 100644 (file)
index 0000000..13fec5b
--- /dev/null
+++ b/sound/firewire/digi00x/Makefile
@@ -0,0 +1,2 @@
+snd-firewire-digi00x-objs := digi00x.o
+obj-$(CONFIG_SND_FIREWIRE_DIGI00X) += snd-firewire-digi00x.o

diff --git a/sound/firewire/digi00x/digi00x.c b/sound/firewire/digi00x/digi00x.c
new file mode 100644 (file)
index 0000000..260967e
--- /dev/null
+++ b/sound/firewire/digi00x/digi00x.c
@@ -0,0 +1,138 @@
+/*
+ * digi00x.c - a part of driver for Digidesign Digi 002/003 family
+ *
+ * Copyright (c) 2014-2015 Takashi Sakamoto
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "digi00x.h"
+
+MODULE_DESCRIPTION("Digidesign Digi 002/003 family Driver");
+MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
+MODULE_LICENSE("GPL v2");
+
+#define VENDOR_DIGIDESIGN      0x00a07e
+#define MODEL_DIGI00X          0x000002
+
+static int name_card(struct snd_dg00x *dg00x)
+{
+       struct fw_device *fw_dev = fw_parent_device(dg00x->unit);
+       char name[32] = {0};
+       char *model;
+       int err;
+
+       err = fw_csr_string(dg00x->unit->directory, CSR_MODEL, name,
+                           sizeof(name));
+       if (err < 0)
+               return err;
+
+       model = skip_spaces(name);
+
+       strcpy(dg00x->card->driver, "Digi00x");
+       strcpy(dg00x->card->shortname, model);
+       strcpy(dg00x->card->mixername, model);
+       snprintf(dg00x->card->longname, sizeof(dg00x->card->longname),
+                "Digidesign %s, GUID %08x%08x at %s, S%d", model,
+                cpu_to_be32(fw_dev->config_rom[3]),
+                cpu_to_be32(fw_dev->config_rom[4]),
+                dev_name(&dg00x->unit->device), 100 << fw_dev->max_speed);
+
+       return 0;
+}
+
+static void dg00x_card_free(struct snd_card *card)
+{
+       struct snd_dg00x *dg00x = card->private_data;
+
+       fw_unit_put(dg00x->unit);
+
+       mutex_destroy(&dg00x->mutex);
+}
+
+static int snd_dg00x_probe(struct fw_unit *unit,
+                          const struct ieee1394_device_id *entry)
+{
+       struct snd_card *card;
+       struct snd_dg00x *dg00x;
+       int err;
+
+       /* create card */
+       err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
+                          sizeof(struct snd_dg00x), &card);
+       if (err < 0)
+               return err;
+       card->private_free = dg00x_card_free;
+
+       /* initialize myself */
+       dg00x = card->private_data;
+       dg00x->card = card;
+       dg00x->unit = fw_unit_get(unit);
+
+       mutex_init(&dg00x->mutex);
+
+       err = name_card(dg00x);
+       if (err < 0)
+               goto error;
+
+       err = snd_card_register(card);
+       if (err < 0)
+               goto error;
+
+       dev_set_drvdata(&unit->device, dg00x);
+
+       return err;
+error:
+       snd_card_free(card);
+       return err;
+}
+
+static void snd_dg00x_update(struct fw_unit *unit)
+{
+       return;
+}
+
+static void snd_dg00x_remove(struct fw_unit *unit)
+{
+       struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device);
+
+       /* No need to wait for releasing card object in this context. */
+       snd_card_free_when_closed(dg00x->card);
+}
+
+static const struct ieee1394_device_id snd_dg00x_id_table[] = {
+       /* Both of 002/003 use the same ID. */
+       {
+               .match_flags = IEEE1394_MATCH_VENDOR_ID |
+                              IEEE1394_MATCH_MODEL_ID,
+               .vendor_id = VENDOR_DIGIDESIGN,
+               .model_id = MODEL_DIGI00X,
+       },
+       {}
+};
+MODULE_DEVICE_TABLE(ieee1394, snd_dg00x_id_table);
+
+static struct fw_driver dg00x_driver = {
+       .driver = {
+               .owner = THIS_MODULE,
+               .name = "snd-firewire-digi00x",
+               .bus = &fw_bus_type,
+       },
+       .probe    = snd_dg00x_probe,
+       .update   = snd_dg00x_update,
+       .remove   = snd_dg00x_remove,
+       .id_table = snd_dg00x_id_table,
+};
+
+static int __init snd_dg00x_init(void)
+{
+       return driver_register(&dg00x_driver.driver);
+}
+
+static void __exit snd_dg00x_exit(void)
+{
+       driver_unregister(&dg00x_driver.driver);
+}
+
+module_init(snd_dg00x_init);
+module_exit(snd_dg00x_exit);

diff --git a/sound/firewire/digi00x/digi00x.h b/sound/firewire/digi00x/digi00x.h
new file mode 100644 (file)
index 0000000..0bb2ca3
--- /dev/null
+++ b/sound/firewire/digi00x/digi00x.h
@@ -0,0 +1,32 @@
+/*
+ * digi00x.h - a part of driver for Digidesign Digi 002/003 family
+ *
+ * Copyright (c) 2014-2015 Takashi Sakamoto
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#ifndef SOUND_DIGI00X_H_INCLUDED
+#define SOUND_DIGI00X_H_INCLUDED
+
+#include <linux/compat.h>
+#include <linux/device.h>
+#include <linux/firewire.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+
+#include <sound/core.h>
+#include <sound/initval.h>
+
+#include "../lib.h"
+
+struct snd_dg00x {
+       struct snd_card *card;
+       struct fw_unit *unit;
+
+       struct mutex mutex;
+};
+
+#endif