1 /*
2  * tascam-proc.h - a part of driver for TASCAM FireWire series
3  *
4  * Copyright (c) 2015 Takashi Sakamoto
5  *
6  * Licensed under the terms of the GNU General Public License, version 2.
7  */
8 
9 #include "./tascam.h"
10 
11 static void proc_read_firmware(struct snd_info_entry *entry,
12 			       struct snd_info_buffer *buffer)
13 {
14 	struct snd_tscm *tscm = entry->private_data;
15 	__be32 data;
16 	unsigned int reg, fpga, arm, hw;
17 	int err;
18 
19 	err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
20 			TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_REGISTER,
21 			&data, sizeof(data), 0);
22 	if (err < 0)
23 		return;
24 	reg = be32_to_cpu(data);
25 
26 	err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
27 			TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_FPGA,
28 			&data, sizeof(data), 0);
29 	if (err < 0)
30 		return;
31 	fpga = be32_to_cpu(data);
32 
33 	err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
34 			TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_ARM,
35 			&data, sizeof(data), 0);
36 	if (err < 0)
37 		return;
38 	arm = be32_to_cpu(data);
39 
40 	err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
41 			TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_HW,
42 			&data, sizeof(data), 0);
43 	if (err < 0)
44 		return;
45 	hw = be32_to_cpu(data);
46 
47 	snd_iprintf(buffer, "Register: %d (0x%08x)\n", reg & 0xffff, reg);
48 	snd_iprintf(buffer, "FPGA:     %d (0x%08x)\n", fpga & 0xffff, fpga);
49 	snd_iprintf(buffer, "ARM:      %d (0x%08x)\n", arm & 0xffff, arm);
50 	snd_iprintf(buffer, "Hardware: %d (0x%08x)\n", hw >> 16, hw);
51 }
52 
53 static void add_node(struct snd_tscm *tscm, struct snd_info_entry *root,
54 		     const char *name,
55 		     void (*op)(struct snd_info_entry *e,
56 				struct snd_info_buffer *b))
57 {
58 	struct snd_info_entry *entry;
59 
60 	entry = snd_info_create_card_entry(tscm->card, name, root);
61 	if (entry == NULL)
62 		return;
63 
64 	snd_info_set_text_ops(entry, tscm, op);
65 	if (snd_info_register(entry) < 0)
66 		snd_info_free_entry(entry);
67 }
68 
69 void snd_tscm_proc_init(struct snd_tscm *tscm)
70 {
71 	struct snd_info_entry *root;
72 
73 	/*
74 	 * All nodes are automatically removed at snd_card_disconnect(),
75 	 * by following to link list.
76 	 */
77 	root = snd_info_create_card_entry(tscm->card, "firewire",
78 					  tscm->card->proc_root);
79 	if (root == NULL)
80 		return;
81 	root->mode = S_IFDIR | S_IRUGO | S_IXUGO;
82 	if (snd_info_register(root) < 0) {
83 		snd_info_free_entry(root);
84 		return;
85 	}
86 
87 	add_node(tscm, root, "firmware", proc_read_firmware);
88 }
89