// SPDX-License-Identifier: GPL-2.0-only
/*
* fireworks_command . c - a part of driver for Fireworks based devices
*
* Copyright ( c ) 2013 - 2014 Takashi Sakamoto
*/
#include "./fireworks.h"
/*
* This driver uses transaction version 1 or later to use extended hardware
* information . Then too old devices are not available .
*
* Each commands are not required to have continuous sequence numbers . This
* number is just used to match command and response .
*
* This module support a part of commands . Please see FFADO if you want to see
* whole commands . But there are some commands which FFADO don ' t implement .
*
* Fireworks also supports AV / C general commands and AV / C Stream Format
* Information commands . But this module don ' t use them .
*/
#define KERNEL_SEQNUM_MIN (SND_EFW_TRANSACTION_USER_SEQNUM_MAX + 2 )
#define KERNEL_SEQNUM_MAX ((u32)~0 )
/* for clock source and sampling rate */
struct efc_clock {
u32 source;
u32 sampling_rate;
u32 index;
};
/* command categories */
enum efc_category {
EFC_CAT_HWINFO = 0 ,
EFC_CAT_TRANSPORT = 2 ,
EFC_CAT_HWCTL = 3 ,
};
/* hardware info category commands */
enum efc_cmd_hwinfo {
EFC_CMD_HWINFO_GET_CAPS = 0 ,
EFC_CMD_HWINFO_GET_POLLED = 1 ,
EFC_CMD_HWINFO_SET_RESP_ADDR = 2
};
enum efc_cmd_transport {
EFC_CMD_TRANSPORT_SET_TX_MODE = 0
};
/* hardware control category commands */
enum efc_cmd_hwctl {
EFC_CMD_HWCTL_SET_CLOCK = 0 ,
EFC_CMD_HWCTL_GET_CLOCK = 1 ,
EFC_CMD_HWCTL_IDENTIFY = 5
};
/* return values in response */
enum efr_status {
EFR_STATUS_OK = 0 ,
EFR_STATUS_BAD = 1 ,
EFR_STATUS_BAD_COMMAND = 2 ,
EFR_STATUS_COMM_ERR = 3 ,
EFR_STATUS_BAD_QUAD_COUNT = 4 ,
EFR_STATUS_UNSUPPORTED = 5 ,
EFR_STATUS_1394_TIMEOUT = 6 ,
EFR_STATUS_DSP_TIMEOUT = 7 ,
EFR_STATUS_BAD_RATE = 8 ,
EFR_STATUS_BAD_CLOCK = 9 ,
EFR_STATUS_BAD_CHANNEL = 10 ,
EFR_STATUS_BAD_PAN = 11 ,
EFR_STATUS_FLASH_BUSY = 12 ,
EFR_STATUS_BAD_MIRROR = 13 ,
EFR_STATUS_BAD_LED = 14 ,
EFR_STATUS_BAD_PARAMETER = 15 ,
EFR_STATUS_INCOMPLETE = 0 x80000000
};
static const char *const efr_status_names[] = {
[EFR_STATUS_OK] = "OK" ,
[EFR_STATUS_BAD] = "bad" ,
[EFR_STATUS_BAD_COMMAND] = "bad command" ,
[EFR_STATUS_COMM_ERR] = "comm err" ,
[EFR_STATUS_BAD_QUAD_COUNT] = "bad quad count" ,
[EFR_STATUS_UNSUPPORTED] = "unsupported" ,
[EFR_STATUS_1394_TIMEOUT] = "1394 timeout" ,
[EFR_STATUS_DSP_TIMEOUT] = "DSP timeout" ,
[EFR_STATUS_BAD_RATE] = "bad rate" ,
[EFR_STATUS_BAD_CLOCK] = "bad clock" ,
[EFR_STATUS_BAD_CHANNEL] = "bad channel" ,
[EFR_STATUS_BAD_PAN] = "bad pan" ,
[EFR_STATUS_FLASH_BUSY] = "flash busy" ,
[EFR_STATUS_BAD_MIRROR] = "bad mirror" ,
[EFR_STATUS_BAD_LED] = "bad LED" ,
[EFR_STATUS_BAD_PARAMETER] = "bad parameter" ,
[EFR_STATUS_BAD_PARAMETER + 1 ] = "incomplete"
};
static int
efw_transaction(struct snd_efw *efw, unsigned int category,
unsigned int command,
const __be32 *params, unsigned int param_bytes,
const __be32 *resp, unsigned int resp_bytes)
{
struct snd_efw_transaction *header;
__be32 *buf;
u32 seqnum;
unsigned int buf_bytes, cmd_bytes;
int err;
/* calculate buffer size*/
buf_bytes = sizeof (struct snd_efw_transaction) +
max(param_bytes, resp_bytes);
/* keep buffer */
buf = kzalloc(buf_bytes, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
/* to keep consistency of sequence number */
spin_lock(&efw->lock);
if ((efw->seqnum < KERNEL_SEQNUM_MIN) ||
(efw->seqnum >= KERNEL_SEQNUM_MAX - 2 ))
efw->seqnum = KERNEL_SEQNUM_MIN;
else
efw->seqnum += 2 ;
seqnum = efw->seqnum;
spin_unlock(&efw->lock);
/* fill transaction header fields */
cmd_bytes = sizeof (struct snd_efw_transaction) + param_bytes;
header = (struct snd_efw_transaction *)buf;
header->length = cpu_to_be32(cmd_bytes / sizeof (__be32));
header->version = cpu_to_be32(1 );
header->seqnum = cpu_to_be32(seqnum);
header->category = cpu_to_be32(category);
header->command = cpu_to_be32(command);
header->status = 0 ;
/* fill transaction command parameters */
memcpy(header->params, params, param_bytes);
err = snd_efw_transaction_run(efw->unit, buf, cmd_bytes,
buf, buf_bytes);
if (err < 0 )
goto end;
/* check transaction header fields */
if ((be32_to_cpu(header->version) < 1 ) ||
(be32_to_cpu(header->category) != category) ||
(be32_to_cpu(header->command) != command) ||
(be32_to_cpu(header->status) != EFR_STATUS_OK)) {
dev_err(&efw->unit->device, "EFW command failed [%u/%u]: %s\n" ,
be32_to_cpu(header->category),
be32_to_cpu(header->command),
efr_status_names[be32_to_cpu(header->status)]);
err = -EIO;
goto end;
}
if (resp == NULL)
goto end;
/* fill transaction response parameters */
memset((void *)resp, 0 , resp_bytes);
resp_bytes = min_t(unsigned int , resp_bytes,
be32_to_cpu(header->length) * sizeof (__be32) -
sizeof (struct snd_efw_transaction));
memcpy((void *)resp, &buf[6 ], resp_bytes);
end:
kfree(buf);
return err;
}
/*
* The address in host system for transaction response is changable when the
* device supports . struct hwinfo . flags includes its flag . The default is
* MEMORY_SPACE_EFW_RESPONSE .
*/
int snd_efw_command_set_resp_addr(struct snd_efw *efw,
u16 addr_high, u32 addr_low)
{
__be32 addr[2 ];
addr[0 ] = cpu_to_be32(addr_high);
addr[1 ] = cpu_to_be32(addr_low);
if (!efw->resp_addr_changable)
return -ENOSYS;
return efw_transaction(efw, EFC_CAT_HWCTL,
EFC_CMD_HWINFO_SET_RESP_ADDR,
addr, sizeof (addr), NULL, 0 );
}
/*
* This is for timestamp processing . In Windows mode , all 32 bit fields of second
* CIP header in AMDTP transmit packet is used for ' presentation timestamp ' . In
* ' no data ' packet the value of this field is 0 x90ffffff .
*/
int snd_efw_command_set_tx_mode(struct snd_efw *efw,
enum snd_efw_transport_mode mode)
{
__be32 param = cpu_to_be32(mode);
return efw_transaction(efw, EFC_CAT_TRANSPORT,
EFC_CMD_TRANSPORT_SET_TX_MODE,
¶m, sizeof (param), NULL, 0 );
}
int snd_efw_command_get_hwinfo(struct snd_efw *efw,
struct snd_efw_hwinfo *hwinfo)
{
int err;
err = efw_transaction(efw, EFC_CAT_HWINFO,
EFC_CMD_HWINFO_GET_CAPS,
NULL, 0 , (__be32 *)hwinfo, sizeof (*hwinfo));
if (err < 0 )
goto end;
be32_to_cpus(&hwinfo->flags);
be32_to_cpus(&hwinfo->guid_hi);
be32_to_cpus(&hwinfo->guid_lo);
be32_to_cpus(&hwinfo->type);
be32_to_cpus(&hwinfo->version);
be32_to_cpus(&hwinfo->supported_clocks);
be32_to_cpus(&hwinfo->amdtp_rx_pcm_channels);
be32_to_cpus(&hwinfo->amdtp_tx_pcm_channels);
be32_to_cpus(&hwinfo->phys_out);
be32_to_cpus(&hwinfo->phys_in);
be32_to_cpus(&hwinfo->phys_out_grp_count);
be32_to_cpus(&hwinfo->phys_in_grp_count);
be32_to_cpus(&hwinfo->midi_out_ports);
be32_to_cpus(&hwinfo->midi_in_ports);
be32_to_cpus(&hwinfo->max_sample_rate);
be32_to_cpus(&hwinfo->min_sample_rate);
be32_to_cpus(&hwinfo->dsp_version);
be32_to_cpus(&hwinfo->arm_version);
be32_to_cpus(&hwinfo->mixer_playback_channels);
be32_to_cpus(&hwinfo->mixer_capture_channels);
be32_to_cpus(&hwinfo->fpga_version);
be32_to_cpus(&hwinfo->amdtp_rx_pcm_channels_2x);
be32_to_cpus(&hwinfo->amdtp_tx_pcm_channels_2x);
be32_to_cpus(&hwinfo->amdtp_rx_pcm_channels_4x);
be32_to_cpus(&hwinfo->amdtp_tx_pcm_channels_4x);
/* ensure terminated */
hwinfo->vendor_name[HWINFO_NAME_SIZE_BYTES - 1 ] = '\0' ;
hwinfo->model_name[HWINFO_NAME_SIZE_BYTES - 1 ] = '\0' ;
end:
return err;
}
int snd_efw_command_get_phys_meters(struct snd_efw *efw,
struct snd_efw_phys_meters *meters,
unsigned int len)
{
u32 *buf = (u32 *)meters;
unsigned int i;
int err;
err = efw_transaction(efw, EFC_CAT_HWINFO,
EFC_CMD_HWINFO_GET_POLLED,
NULL, 0 , (__be32 *)meters, len);
if (err >= 0 )
for (i = 0 ; i < len / sizeof (u32); i++)
be32_to_cpus(&buf[i]);
return err;
}
static int
command_get_clock(struct snd_efw *efw, struct efc_clock *clock)
{
int err;
err = efw_transaction(efw, EFC_CAT_HWCTL,
EFC_CMD_HWCTL_GET_CLOCK,
NULL, 0 ,
(__be32 *)clock, sizeof (struct efc_clock));
if (err >= 0 ) {
be32_to_cpus(&clock->source);
be32_to_cpus(&clock->sampling_rate);
be32_to_cpus(&clock->index);
}
return err;
}
/* give UINT_MAX if set nothing */
static int
command_set_clock(struct snd_efw *efw,
unsigned int source, unsigned int rate)
{
struct efc_clock clock = {0 };
int err;
/* check arguments */
if ((source == UINT_MAX) && (rate == UINT_MAX)) {
err = -EINVAL;
goto end;
}
/* get current status */
err = command_get_clock(efw, &clock);
if (err < 0 )
goto end;
/* no need */
if ((clock.source == source) && (clock.sampling_rate == rate))
goto end;
/* set params */
if ((source != UINT_MAX) && (clock.source != source))
clock.source = source;
if ((rate != UINT_MAX) && (clock.sampling_rate != rate))
clock.sampling_rate = rate;
clock.index = 0 ;
cpu_to_be32s(&clock.source);
cpu_to_be32s(&clock.sampling_rate);
cpu_to_be32s(&clock.index);
err = efw_transaction(efw, EFC_CAT_HWCTL,
EFC_CMD_HWCTL_SET_CLOCK,
(__be32 *)&clock, sizeof (struct efc_clock),
NULL, 0 );
if (err < 0 )
goto end;
/*
* With firmware version 5 . 8 , just after changing clock state , these
* parameters are not immediately retrieved by get command . In my
* trial , there needs to be 100 msec to get changed parameters .
*/
msleep(150 );
end:
return err;
}
int snd_efw_command_get_clock_source(struct snd_efw *efw,
enum snd_efw_clock_source *source)
{
int err;
struct efc_clock clock = {0 };
err = command_get_clock(efw, &clock);
if (err >= 0 )
*source = clock.source;
return err;
}
int snd_efw_command_get_sampling_rate(struct snd_efw *efw, unsigned int *rate)
{
int err;
struct efc_clock clock = {0 };
err = command_get_clock(efw, &clock);
if (err >= 0 )
*rate = clock.sampling_rate;
return err;
}
int snd_efw_command_set_sampling_rate(struct snd_efw *efw, unsigned int rate)
{
return command_set_clock(efw, UINT_MAX, rate);
}
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