87 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * digi00x-proc.c - a part of driver for Digidesign Digi 002/003 family4 *5 * Copyright (c) 2014-2015 Takashi Sakamoto6 */7 8#include "digi00x.h"9 10static int get_optical_iface_mode(struct snd_dg00x *dg00x,11 enum snd_dg00x_optical_mode *mode)12{13 __be32 data;14 int err;15 16 err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST,17 DG00X_ADDR_BASE + DG00X_OFFSET_OPT_IFACE_MODE,18 &data, sizeof(data), 0);19 if (err >= 0)20 *mode = be32_to_cpu(data) & 0x01;21 22 return err;23}24 25static void proc_read_clock(struct snd_info_entry *entry,26 struct snd_info_buffer *buf)27{28 static const char *const source_name[] = {29 [SND_DG00X_CLOCK_INTERNAL] = "internal",30 [SND_DG00X_CLOCK_SPDIF] = "s/pdif",31 [SND_DG00X_CLOCK_ADAT] = "adat",32 [SND_DG00X_CLOCK_WORD] = "word clock",33 };34 static const char *const optical_name[] = {35 [SND_DG00X_OPT_IFACE_MODE_ADAT] = "adat",36 [SND_DG00X_OPT_IFACE_MODE_SPDIF] = "s/pdif",37 };38 struct snd_dg00x *dg00x = entry->private_data;39 enum snd_dg00x_optical_mode mode;40 unsigned int rate;41 enum snd_dg00x_clock clock;42 bool detect;43 44 if (get_optical_iface_mode(dg00x, &mode) < 0)45 return;46 if (snd_dg00x_stream_get_local_rate(dg00x, &rate) < 0)47 return;48 if (snd_dg00x_stream_get_clock(dg00x, &clock) < 0)49 return;50 51 snd_iprintf(buf, "Optical mode: %s\n", optical_name[mode]);52 snd_iprintf(buf, "Sampling Rate: %d\n", rate);53 snd_iprintf(buf, "Clock Source: %s\n", source_name[clock]);54 55 if (clock == SND_DG00X_CLOCK_INTERNAL)56 return;57 58 if (snd_dg00x_stream_check_external_clock(dg00x, &detect) < 0)59 return;60 snd_iprintf(buf, "External source: %s\n", detect ? "detected" : "not");61 if (!detect)62 return;63 64 if (snd_dg00x_stream_get_external_rate(dg00x, &rate) >= 0)65 snd_iprintf(buf, "External sampling rate: %d\n", rate);66}67 68void snd_dg00x_proc_init(struct snd_dg00x *dg00x)69{70 struct snd_info_entry *root, *entry;71 72 /*73 * All nodes are automatically removed at snd_card_disconnect(),74 * by following to link list.75 */76 root = snd_info_create_card_entry(dg00x->card, "firewire",77 dg00x->card->proc_root);78 if (root == NULL)79 return;80 81 root->mode = S_IFDIR | 0555;82 83 entry = snd_info_create_card_entry(dg00x->card, "clock", root);84 if (entry)85 snd_info_set_text_ops(entry, dg00x, proc_read_clock);86}87