1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * tascam-proc.h - a part of driver for TASCAM FireWire series
4 *
5 * Copyright (c) 2015 Takashi Sakamoto
6 */
7
8#include "./tascam.h"
9
10static void proc_read_firmware(struct snd_info_entry *entry,
11 struct snd_info_buffer *buffer)
12{
13 struct snd_tscm *tscm = entry->private_data;
14 __be32 data;
15 unsigned int reg, fpga, arm, hw;
16 int err;
17
18 err = snd_fw_transaction(unit: tscm->unit, TCODE_READ_QUADLET_REQUEST,
19 TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_REGISTER,
20 buffer: &data, length: sizeof(data), flags: 0);
21 if (err < 0)
22 return;
23 reg = be32_to_cpu(data);
24
25 err = snd_fw_transaction(unit: tscm->unit, TCODE_READ_QUADLET_REQUEST,
26 TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_FPGA,
27 buffer: &data, length: sizeof(data), flags: 0);
28 if (err < 0)
29 return;
30 fpga = be32_to_cpu(data);
31
32 err = snd_fw_transaction(unit: tscm->unit, TCODE_READ_QUADLET_REQUEST,
33 TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_ARM,
34 buffer: &data, length: sizeof(data), flags: 0);
35 if (err < 0)
36 return;
37 arm = be32_to_cpu(data);
38
39 err = snd_fw_transaction(unit: tscm->unit, TCODE_READ_QUADLET_REQUEST,
40 TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_HW,
41 buffer: &data, length: sizeof(data), flags: 0);
42 if (err < 0)
43 return;
44 hw = be32_to_cpu(data);
45
46 snd_iprintf(buffer, "Register: %d (0x%08x)\n", reg & 0xffff, reg);
47 snd_iprintf(buffer, "FPGA: %d (0x%08x)\n", fpga & 0xffff, fpga);
48 snd_iprintf(buffer, "ARM: %d (0x%08x)\n", arm & 0xffff, arm);
49 snd_iprintf(buffer, "Hardware: %d (0x%08x)\n", hw >> 16, hw);
50}
51
52static void add_node(struct snd_tscm *tscm, struct snd_info_entry *root,
53 const char *name,
54 void (*op)(struct snd_info_entry *e,
55 struct snd_info_buffer *b))
56{
57 struct snd_info_entry *entry;
58
59 entry = snd_info_create_card_entry(card: tscm->card, name, parent: root);
60 if (entry)
61 snd_info_set_text_ops(entry, private_data: tscm, read: op);
62}
63
64void snd_tscm_proc_init(struct snd_tscm *tscm)
65{
66 struct snd_info_entry *root;
67
68 /*
69 * All nodes are automatically removed at snd_card_disconnect(),
70 * by following to link list.
71 */
72 root = snd_info_create_card_entry(card: tscm->card, name: "firewire",
73 parent: tscm->card->proc_root);
74 if (root == NULL)
75 return;
76 root->mode = S_IFDIR | 0555;
77
78 add_node(tscm, root, name: "firmware", op: proc_read_firmware);
79}
80

source code of linux/sound/firewire/tascam/tascam-proc.c