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ALSA: firewire-tascam: add proc node to show firmware information

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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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2015-10-01 22:02:13 +09:00 committed by Takashi Iwai
parent 6f81ba19ac
commit 96e5fbb0dd
4 changed files with 101 additions and 1 deletions
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2
sound/firewire/tascam/Makefile
View File

@ -1,2 +1,2 @@
snd-firewire-tascam-objs := tascam.o
snd-firewire-tascam-objs := tascam-proc.o tascam.o
obj-$(CONFIG_SND_FIREWIRE_TASCAM) += snd-firewire-tascam.o

88
sound/firewire/tascam/tascam-proc.c Normal file
View File

@ -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);
}

2
sound/firewire/tascam/tascam.c
View File

@ -113,6 +113,8 @@ 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;

10
sound/firewire/tascam/tascam.h
View File

@ -20,6 +20,7 @@
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/info.h>
#include "../lib.h"
@ -43,4 +44,13 @@ struct snd_tscm {
const 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);
#endif