[alsa-devel] [PATCH 29/39] bebob: Add proc interface for debugging purpose
Takashi Sakamoto
o-takashi at sakamocchi.jp
Wed Mar 5 11:48:17 CET 2014
This commit adds proc interface to get information for debugging.
- firmware information
- stream formation
- current clock source and sampling rate
---
sound/firewire/bebob/Makefile | 2 +-
sound/firewire/bebob/bebob.c | 2 +
sound/firewire/bebob/bebob.h | 3 +
sound/firewire/bebob/bebob_proc.c | 155 ++++++++++++++++++++++++++++++++++++++
4 files changed, 161 insertions(+), 1 deletion(-)
create mode 100644 sound/firewire/bebob/bebob_proc.c
diff --git a/sound/firewire/bebob/Makefile b/sound/firewire/bebob/Makefile
index 5cece62..757c40e 100644
--- a/sound/firewire/bebob/Makefile
+++ b/sound/firewire/bebob/Makefile
@@ -1,2 +1,2 @@
-snd-bebob-objs := bebob_command.o bebob_stream.o bebob.o
+snd-bebob-objs := bebob_command.o bebob_stream.o bebob_proc.o bebob.o
obj-m += snd-bebob.o
diff --git a/sound/firewire/bebob/bebob.c b/sound/firewire/bebob/bebob.c
index 39fe17c..d0ad889 100644
--- a/sound/firewire/bebob/bebob.c
+++ b/sound/firewire/bebob/bebob.c
@@ -165,6 +165,8 @@ bebob_probe(struct fw_unit *unit,
if (err < 0)
goto error;
+ snd_bebob_proc_init(bebob);
+
err = snd_card_register(card);
if (err < 0) {
snd_card_free(card);
diff --git a/sound/firewire/bebob/bebob.h b/sound/firewire/bebob/bebob.h
index b3a641c..83ee15a 100644
--- a/sound/firewire/bebob/bebob.h
+++ b/sound/firewire/bebob/bebob.h
@@ -20,6 +20,7 @@
#include <sound/core.h>
#include <sound/initval.h>
+#include <sound/info.h>
#include "../lib.h"
#include "../fcp.h"
@@ -175,6 +176,8 @@ int snd_bebob_stream_stop_duplex(struct snd_bebob *bebob);
void snd_bebob_stream_update_duplex(struct snd_bebob *bebob);
void snd_bebob_stream_destroy_duplex(struct snd_bebob *bebob);
+void snd_bebob_proc_init(struct snd_bebob *bebob);
+
#define SND_BEBOB_DEV_ENTRY(vendor, model) \
{ \
.match_flags = IEEE1394_MATCH_VENDOR_ID | \
diff --git a/sound/firewire/bebob/bebob_proc.c b/sound/firewire/bebob/bebob_proc.c
new file mode 100644
index 0000000..f4aa240
--- /dev/null
+++ b/sound/firewire/bebob/bebob_proc.c
@@ -0,0 +1,155 @@
+/*
+ * bebob_proc.c - a part of driver for BeBoB based devices
+ *
+ * Copyright (c) 2013 Takashi Sakamoto
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "./bebob.h"
+
+/* contents of information register */
+struct hw_info {
+ u64 manufacturer;
+ u32 protocol_ver;
+ u32 bld_ver;
+ u32 guid[2];
+ u32 model_id;
+ u32 model_rev;
+ u64 fw_date;
+ u64 fw_time;
+ u32 fw_id;
+ u32 fw_ver;
+ u32 base_addr;
+ u32 max_size;
+ u64 bld_date;
+ u64 bld_time;
+/* may not used in product
+ u64 dbg_date;
+ u64 dbg_time;
+ u32 dbg_id;
+ u32 dbg_version;
+*/
+} __packed;
+
+static void
+proc_read_hw_info(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ struct snd_bebob *bebob = entry->private_data;
+ struct hw_info *info;
+ int err;
+
+ info = kzalloc(sizeof(struct hw_info), GFP_KERNEL);
+ if (info == NULL)
+ return;
+
+ err = snd_bebob_read_block(bebob->unit, 0,
+ info, sizeof(struct hw_info));
+ if (err < 0)
+ goto end;
+
+ snd_iprintf(buffer, "Manufacturer:\t%.8s\n",
+ (char *)&info->manufacturer);
+ snd_iprintf(buffer, "Protocol Ver:\t%d\n", info->protocol_ver);
+ snd_iprintf(buffer, "Build Ver:\t%d\n", info->bld_ver);
+ snd_iprintf(buffer, "GUID:\t\t0x%.8X%.8X\n",
+ info->guid[0], info->guid[1]);
+ snd_iprintf(buffer, "Model ID:\t0x%02X\n", info->model_id);
+ snd_iprintf(buffer, "Model Rev:\t%d\n", info->model_rev);
+ snd_iprintf(buffer, "Firmware Date:\t%.8s\n", (char *)&info->fw_date);
+ snd_iprintf(buffer, "Firmware Time:\t%.8s\n", (char *)&info->fw_time);
+ snd_iprintf(buffer, "Firmware ID:\t0x%X\n", info->fw_id);
+ snd_iprintf(buffer, "Firmware Ver:\t%d\n", info->fw_ver);
+ snd_iprintf(buffer, "Base Addr:\t0x%X\n", info->base_addr);
+ snd_iprintf(buffer, "Max Size:\t%d\n", info->max_size);
+ snd_iprintf(buffer, "Loader Date:\t%.8s\n", (char *)&info->bld_date);
+ snd_iprintf(buffer, "Loader Time:\t%.8s\n", (char *)&info->bld_time);
+
+end:
+ kfree(info);
+}
+
+static void
+proc_read_formation(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ struct snd_bebob *bebob = entry->private_data;
+ struct snd_bebob_stream_formation *formation;
+ unsigned int i;
+
+ snd_iprintf(buffer, "Output Stream from device:\n");
+ snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
+ formation = bebob->tx_stream_formations;
+ for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
+ snd_iprintf(buffer,
+ "\t%d\t%d\t%d\n", snd_bebob_rate_table[i],
+ formation[i].pcm, formation[i].midi);
+ }
+
+ snd_iprintf(buffer, "Input Stream to device:\n");
+ snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
+ formation = bebob->rx_stream_formations;
+ for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
+ snd_iprintf(buffer,
+ "\t%d\t%d\t%d\n", snd_bebob_rate_table[i],
+ formation[i].pcm, formation[i].midi);
+ }
+}
+
+static void
+proc_read_clock(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ struct snd_bebob *bebob = entry->private_data;
+ unsigned int rate;
+ bool internal;
+
+ if (snd_bebob_stream_get_rate(bebob, &rate) < 0)
+ return;
+ if (snd_bebob_stream_check_internal_clock(bebob, &internal) < 0)
+ return;
+
+ snd_iprintf(buffer, "Clock Source: %s (MSU-dest: %d)",
+ (internal) ? "Internal" : "External",
+ bebob->sync_input_plug);
+ snd_iprintf(buffer, "Sampling rate: %d\n", rate);
+}
+
+static void
+add_node(struct snd_bebob *bebob, struct snd_info_entry *root, const char *name,
+ void (*op)(struct snd_info_entry *e, struct snd_info_buffer *b))
+{
+ struct snd_info_entry *entry;
+
+ entry = snd_info_create_card_entry(bebob->card, name, root);
+ if (entry == NULL)
+ return;
+
+ snd_info_set_text_ops(entry, bebob, op);
+ if (snd_info_register(entry) < 0)
+ snd_info_free_entry(entry);
+}
+
+void snd_bebob_proc_init(struct snd_bebob *bebob)
+{
+ struct snd_info_entry *root;
+
+ /*
+ * All nodes are automatically removed at snd_card_disconnect(),
+ * by following to link list.
+ */
+ root = snd_info_create_card_entry(bebob->card, "firewire",
+ bebob->card->proc_root);
+ if (root == NULL)
+ return;
+ root->mode = S_IFDIR | S_IRUGO | S_IXUGO;
+ if (snd_info_register(root) < 0) {
+ snd_info_free_entry(root);
+ return;
+ }
+
+ add_node(bebob, root, "clock", proc_read_clock);
+ add_node(bebob, root, "firmware", proc_read_hw_info);
+ add_node(bebob, root, "formation", proc_read_formation);
+}
--
1.8.3.2
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