firewire/tascam/tascam-proc.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * tascam-proc.h - a part of driver for TASCAM FireWire series
0004  *
0005  * Copyright (c) 2015 Takashi Sakamoto
0006  */
0007
0008 #include "./tascam.h"
0009
0010 static void proc_read_firmware(struct snd_info_entry *entry,
0011                    struct snd_info_buffer *buffer)
0012 {
0013     struct snd_tscm *tscm = entry->private_data;
0014     __be32 data;
0015     unsigned int reg, fpga, arm, hw;
0016     int err;
0017
0018     err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
0019             TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_REGISTER,
0020             &data, sizeof(data), 0);
0021     if (err < 0)
0022         return;
0023     reg = be32_to_cpu(data);
0024
0025     err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
0026             TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_FPGA,
0027             &data, sizeof(data), 0);
0028     if (err < 0)
0029         return;
0030     fpga = be32_to_cpu(data);
0031
0032     err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
0033             TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_ARM,
0034             &data, sizeof(data), 0);
0035     if (err < 0)
0036         return;
0037     arm = be32_to_cpu(data);
0038
0039     err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST,
0040             TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_HW,
0041             &data, sizeof(data), 0);
0042     if (err < 0)
0043         return;
0044     hw = be32_to_cpu(data);
0045
0046     snd_iprintf(buffer, "Register: %d (0x%08x)\n", reg & 0xffff, reg);
0047     snd_iprintf(buffer, "FPGA:     %d (0x%08x)\n", fpga & 0xffff, fpga);
0048     snd_iprintf(buffer, "ARM:      %d (0x%08x)\n", arm & 0xffff, arm);
0049     snd_iprintf(buffer, "Hardware: %d (0x%08x)\n", hw >> 16, hw);
0050 }
0051
0052 static void add_node(struct snd_tscm *tscm, struct snd_info_entry *root,
0053              const char *name,
0054              void (*op)(struct snd_info_entry *e,
0055                 struct snd_info_buffer *b))
0056 {
0057     struct snd_info_entry *entry;
0058
0059     entry = snd_info_create_card_entry(tscm->card, name, root);
0060     if (entry)
0061         snd_info_set_text_ops(entry, tscm, op);
0062 }
0063
0064 void snd_tscm_proc_init(struct snd_tscm *tscm)
0065 {
0066     struct snd_info_entry *root;
0067
0068     /*
0069      * All nodes are automatically removed at snd_card_disconnect(),
0070      * by following to link list.
0071      */
0072     root = snd_info_create_card_entry(tscm->card, "firewire",
0073                       tscm->card->proc_root);
0074     if (root == NULL)
0075         return;
0076     root->mode = S_IFDIR | 0555;
0077
0078     add_node(tscm, root, "firmware", proc_read_firmware);
0079 }