cregit-Linux how code gets into the kernel

Release 4.8 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); }

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static void proc_read_meters(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { struct snd_bebob *bebob = entry->private_data; const struct snd_bebob_meter_spec *spec = bebob->spec->meter; u32 *buf; unsigned int i, c, channels, size; if (spec == NULL) return; channels = spec->num * 2; size = channels * sizeof(u32); buf = kmalloc(size, GFP_KERNEL); if (buf == NULL) return; if (spec->get(bebob, buf, size) < 0) goto end; for (i = 0, c = 1; i < channels; i++) { snd_iprintf(buffer, "%s %d:\t%d\n", spec->labels[i / 2], c++, buf[i]); if ((i + 1 < channels - 1) && (strcmp(spec->labels[i / 2], spec->labels[(i + 1) / 2]) != 0)) c = 1; } end: kfree(buf); }

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takashi sakamototakashi sakamoto20399.51%266.67%
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Total204100.00%3100.00%


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); } }

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takashi sakamototakashi sakamoto156100.00%2100.00%
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static void proc_read_clock(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { static const char *const clk_labels[] = { "Internal", "External", "SYT-Match", }; struct snd_bebob *bebob = entry->private_data; const struct snd_bebob_rate_spec *rate_spec = bebob->spec->rate; const struct snd_bebob_clock_spec *clk_spec = bebob->spec->clock; enum snd_bebob_clock_type src; unsigned int rate; if (rate_spec->get(bebob, &rate) >= 0) snd_iprintf(buffer, "Sampling rate: %d\n", rate); if (snd_bebob_stream_get_clock_src(bebob, &src) >= 0) { if (clk_spec) snd_iprintf(buffer, "Clock Source: %s\n", clk_labels[src]); else snd_iprintf(buffer, "Clock Source: %s (MSU-dest: %d)\n", clk_labels[src], bebob->sync_input_plug); } }

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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); }

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takashi sakamototakashi sakamoto86100.00%1100.00%
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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); if (bebob->spec->meter != NULL) add_node(bebob, root, "meter", proc_read_meters); }

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