sound/firewire/bebob/bebob_proc.c

/*
 * bebob_proc.c - a part of driver for BeBoB based devices
 *
 * Copyright (c) 2013-2014 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;

	info = kzalloc(sizeof(struct hw_info), GFP_KERNEL);
	if (info == NULL)
		return;

	if (snd_bebob_read_block(bebob->unit, 0,
				   info, sizeof(struct hw_info)) < 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)
		snd_iprintf(buffer, "Sampling rate: %d\n", rate);

	if (snd_bebob_stream_check_internal_clock(bebob, &internal) >= 0)
		snd_iprintf(buffer, "Clock Source: %s (MSU-dest: %d)",
			    (internal) ? "Internal" : "External",
			    bebob->sync_input_plug);
}

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);
}