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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2014-12-09 00:10:43 +0900
committerTakashi Iwai <tiwai@suse.de>2014-12-10 10:47:54 +0100
commit3c96101f190020e91d413c5835f7a722fc007923 (patch)
tree00aaf93b5806daa8c1f750e08c1ee50332a96747 /sound/firewire
parent5cd1d3f47a6321612a51ab88ffe8ef65120fcbe0 (diff)
downloadkernel-3c96101f190020e91d413c5835f7a722fc007923.tar.gz
ALSA: oxfw: Add proc interface for debugging purpose
This commit adds proc interface to get information about stream formation. This commit also adds snd_oxfw_stream_get_current_formation() to get current stream formation. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/oxfw/Makefile3
-rw-r--r--sound/firewire/oxfw/oxfw-proc.c84
-rw-r--r--sound/firewire/oxfw/oxfw-stream.c27
-rw-r--r--sound/firewire/oxfw/oxfw.c2
-rw-r--r--sound/firewire/oxfw/oxfw.h3
5 files changed, 118 insertions, 1 deletions
diff --git a/sound/firewire/oxfw/Makefile b/sound/firewire/oxfw/Makefile
index b107134d11d5..e9297c638aa1 100644
--- a/sound/firewire/oxfw/Makefile
+++ b/sound/firewire/oxfw/Makefile
@@ -1,2 +1,3 @@
-snd-oxfw-objs := oxfw-command.o oxfw-stream.o oxfw-control.o oxfw-pcm.o oxfw.o
+snd-oxfw-objs := oxfw-command.o oxfw-stream.o oxfw-control.o oxfw-pcm.o \
+ oxfw-proc.o oxfw.o
obj-m += snd-oxfw.o
diff --git a/sound/firewire/oxfw/oxfw-proc.c b/sound/firewire/oxfw/oxfw-proc.c
new file mode 100644
index 000000000000..18e030572708
--- /dev/null
+++ b/sound/firewire/oxfw/oxfw-proc.c
@@ -0,0 +1,84 @@
+/*
+ * oxfw_proc.c - a part of driver for OXFW970/971 based devices
+ *
+ * Copyright (c) 2014 Takashi Sakamoto
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "./oxfw.h"
+
+static void proc_read_formation(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ struct snd_oxfw *oxfw = entry->private_data;
+ struct snd_oxfw_stream_formation formation, curr;
+ u8 *format;
+ char flag;
+ unsigned int i, err;
+
+ /* Show input. */
+ err = snd_oxfw_stream_get_current_formation(oxfw,
+ AVC_GENERAL_PLUG_DIR_IN,
+ &curr);
+ if (err < 0)
+ return;
+
+ snd_iprintf(buffer, "Input Stream to device:\n");
+ snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
+ for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
+ format = oxfw->rx_stream_formats[i];
+ if (format == NULL)
+ continue;
+
+ err = snd_oxfw_stream_parse_format(format, &formation);
+ if (err < 0)
+ continue;
+
+ if (memcmp(&formation, &curr, sizeof(curr)) == 0)
+ flag = '*';
+ else
+ flag = ' ';
+
+ snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
+ formation.rate, formation.pcm, formation.midi);
+ }
+
+}
+
+static void add_node(struct snd_oxfw *oxfw, 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(oxfw->card, name, root);
+ if (entry == NULL)
+ return;
+
+ snd_info_set_text_ops(entry, oxfw, op);
+ if (snd_info_register(entry) < 0)
+ snd_info_free_entry(entry);
+}
+
+void snd_oxfw_proc_init(struct snd_oxfw *oxfw)
+{
+ 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(oxfw->card, "firewire",
+ oxfw->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(oxfw, root, "formation", proc_read_formation);
+}
diff --git a/sound/firewire/oxfw/oxfw-stream.c b/sound/firewire/oxfw/oxfw-stream.c
index 17e3802e6ac2..210bf5a2f56e 100644
--- a/sound/firewire/oxfw/oxfw-stream.c
+++ b/sound/firewire/oxfw/oxfw-stream.c
@@ -108,6 +108,33 @@ void snd_oxfw_stream_update_simplex(struct snd_oxfw *oxfw)
amdtp_stream_update(&oxfw->rx_stream);
}
+int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw,
+ enum avc_general_plug_dir dir,
+ struct snd_oxfw_stream_formation *formation)
+{
+ u8 *format;
+ unsigned int len;
+ int err;
+
+ len = AVC_GENERIC_FRAME_MAXIMUM_BYTES;
+ format = kmalloc(len, GFP_KERNEL);
+ if (format == NULL)
+ return -ENOMEM;
+
+ err = avc_stream_get_format_single(oxfw->unit, dir, 0, format, &len);
+ if (err < 0)
+ goto end;
+ if (len < 3) {
+ err = -EIO;
+ goto end;
+ }
+
+ err = snd_oxfw_stream_parse_format(format, formation);
+end:
+ kfree(format);
+ return err;
+}
+
/*
* See Table 6.16 - AM824 Stream Format
* Figure 6.19 - format_information field for AM824 Compound
diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c
index a8f9062b2884..a70149ab511b 100644
--- a/sound/firewire/oxfw/oxfw.c
+++ b/sound/firewire/oxfw/oxfw.c
@@ -101,6 +101,8 @@ static int oxfw_probe(struct fw_unit *unit,
if (err < 0)
goto error;
+ snd_oxfw_proc_init(oxfw);
+
err = snd_oxfw_stream_init_simplex(oxfw);
if (err < 0)
goto error;
diff --git a/sound/firewire/oxfw/oxfw.h b/sound/firewire/oxfw/oxfw.h
index 9c3d3e352665..8c832ea6aae0 100644
--- a/sound/firewire/oxfw/oxfw.h
+++ b/sound/firewire/oxfw/oxfw.h
@@ -18,6 +18,7 @@
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
+#include <sound/info.h>
#include "../lib.h"
#include "../fcp.h"
@@ -108,3 +109,5 @@ int snd_oxfw_stream_discover(struct snd_oxfw *oxfw);
int snd_oxfw_create_pcm(struct snd_oxfw *oxfw);
int snd_oxfw_create_mixer(struct snd_oxfw *oxfw);
+
+void snd_oxfw_proc_init(struct snd_oxfw *oxfw);