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 --- sound/firewire/oxfw/Makefile | 3 +- sound/firewire/oxfw/oxfw-proc.c | 84 +++++++++++++++++++++++++++++++++++++++ sound/firewire/oxfw/oxfw-stream.c | 27 +++++++++++++ sound/firewire/oxfw/oxfw.c | 2 + sound/firewire/oxfw/oxfw.h | 3 ++ 5 files changed, 118 insertions(+), 1 deletion(-) create mode 100644 sound/firewire/oxfw/oxfw-proc.c
diff --git a/sound/firewire/oxfw/Makefile b/sound/firewire/oxfw/Makefile index b107134..e9297c6 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 0000000..18e0305 --- /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 17e3802..210bf5a 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 a8f9062..a70149a 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 9c3d3e3..8c832ea 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);