TASCAM FireWire series has certain registers for firmware information.
This commit adds proc node to show the information.
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/firewire/tascam/Makefile | 2 +- sound/firewire/tascam/tascam-proc.c | 88 +++++++++++++++++++++++++++++++++++++ sound/firewire/tascam/tascam.c | 2 + sound/firewire/tascam/tascam.h | 10 +++++ 4 files changed, 101 insertions(+), 1 deletion(-) create mode 100644 sound/firewire/tascam/tascam-proc.c
diff --git a/sound/firewire/tascam/Makefile b/sound/firewire/tascam/Makefile index 29bdbce..63f08c6 100644 --- a/sound/firewire/tascam/Makefile +++ b/sound/firewire/tascam/Makefile @@ -1,2 +1,2 @@ -snd-firewire-tascam-objs := tascam.o +snd-firewire-tascam-objs := tascam-proc.o tascam.o obj-m += snd-firewire-tascam.o diff --git a/sound/firewire/tascam/tascam-proc.c b/sound/firewire/tascam/tascam-proc.c new file mode 100644 index 0000000..bfd4a4c --- /dev/null +++ b/sound/firewire/tascam/tascam-proc.c @@ -0,0 +1,88 @@ +/* + * tascam-proc.h - a part of driver for TASCAM FireWire series + * + * Copyright (c) 2015 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "./tascam.h" + +static void proc_read_firmware(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct snd_tscm *tscm = entry->private_data; + __be32 data; + unsigned int reg, fpga, arm, hw; + int err; + + err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_REGISTER, + &data, sizeof(data), 0); + if (err < 0) + return; + reg = be32_to_cpu(data); + + err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_FPGA, + &data, sizeof(data), 0); + if (err < 0) + return; + fpga = be32_to_cpu(data); + + err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_ARM, + &data, sizeof(data), 0); + if (err < 0) + return; + arm = be32_to_cpu(data); + + err = snd_fw_transaction(tscm->unit, TCODE_READ_QUADLET_REQUEST, + TSCM_ADDR_BASE + TSCM_OFFSET_FIRMWARE_HW, + &data, sizeof(data), 0); + if (err < 0) + return; + hw = be32_to_cpu(data); + + snd_iprintf(buffer, "Register: %d (0x%08x)\n", reg & 0xffff, reg); + snd_iprintf(buffer, "FPGA: %d (0x%08x)\n", fpga & 0xffff, fpga); + snd_iprintf(buffer, "ARM: %d (0x%08x)\n", arm & 0xffff, arm); + snd_iprintf(buffer, "Hardware: %d (0x%08x)\n", hw >> 16, hw); +} + +static void add_node(struct snd_tscm *tscm, 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(tscm->card, name, root); + if (entry == NULL) + return; + + snd_info_set_text_ops(entry, tscm, op); + if (snd_info_register(entry) < 0) + snd_info_free_entry(entry); +} + +void snd_tscm_proc_init(struct snd_tscm *tscm) +{ + 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(tscm->card, "firewire", + tscm->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(tscm, root, "firmware", proc_read_firmware); +} diff --git a/sound/firewire/tascam/tascam.c b/sound/firewire/tascam/tascam.c index 29924ff..5bf3290 100644 --- a/sound/firewire/tascam/tascam.c +++ b/sound/firewire/tascam/tascam.c @@ -123,6 +123,8 @@ static int snd_tscm_probe(struct fw_unit *unit, if (err < 0) goto error;
+ snd_tscm_proc_init(tscm); + err = snd_card_register(card); if (err < 0) goto error; diff --git a/sound/firewire/tascam/tascam.h b/sound/firewire/tascam/tascam.h index 9c225c3..8d4eb3f 100644 --- a/sound/firewire/tascam/tascam.h +++ b/sound/firewire/tascam/tascam.h @@ -17,6 +17,7 @@
#include <sound/core.h> #include <sound/initval.h> +#include <sound/info.h>
#include "../lib.h"
@@ -39,3 +40,12 @@ struct snd_tscm {
struct snd_tscm_spec *spec; }; + +#define TSCM_ADDR_BASE 0xffff00000000ull + +#define TSCM_OFFSET_FIRMWARE_REGISTER 0x0000 +#define TSCM_OFFSET_FIRMWARE_FPGA 0x0004 +#define TSCM_OFFSET_FIRMWARE_ARM 0x0008 +#define TSCM_OFFSET_FIRMWARE_HW 0x000c + +void snd_tscm_proc_init(struct snd_tscm *tscm);