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Release 4.7 sound/firewire/bebob/bebob_focusrite.c

/*
 * bebob_focusrite.c - a part of driver for BeBoB based devices
 *
 * Copyright (c) 2013-2014 Takashi Sakamoto
 *
 * Licensed under the terms of the GNU General Public License, version 2.
 */

#include "./bebob.h"


#define ANA_IN	"Analog In"

#define DIG_IN	"Digital In"

#define ANA_OUT	"Analog Out"

#define DIG_OUT	"Digital Out"

#define STM_IN	"Stream In"


#define SAFFIRE_ADDRESS_BASE			0x000100000000ULL


#define SAFFIRE_OFFSET_CLOCK_SOURCE		0x00f8

#define SAFFIREPRO_OFFSET_CLOCK_SOURCE		0x0174

/* whether sync to external device or not */

#define SAFFIRE_OFFSET_CLOCK_SYNC_EXT		0x013c

#define SAFFIRE_LE_OFFSET_CLOCK_SYNC_EXT	0x0432

#define SAFFIREPRO_OFFSET_CLOCK_SYNC_EXT	0x0164


#define SAFFIRE_CLOCK_SOURCE_INTERNAL		0

#define SAFFIRE_CLOCK_SOURCE_SPDIF		1

/* clock sources as returned from register of Saffire Pro 10 and 26 */

#define SAFFIREPRO_CLOCK_SOURCE_INTERNAL	0

#define SAFFIREPRO_CLOCK_SOURCE_SKIP		1 
/* never used on hardware */

#define SAFFIREPRO_CLOCK_SOURCE_SPDIF		2

#define SAFFIREPRO_CLOCK_SOURCE_ADAT1		3 
/* not used on s.pro. 10 */

#define SAFFIREPRO_CLOCK_SOURCE_ADAT2		4 
/* not used on s.pro. 10 */

#define SAFFIREPRO_CLOCK_SOURCE_WORDCLOCK	5

#define SAFFIREPRO_CLOCK_SOURCE_COUNT		6

/* S/PDIF, ADAT1, ADAT2 is enabled or not. three quadlets */

#define SAFFIREPRO_ENABLE_DIG_IFACES		0x01a4

/* saffirepro has its own parameter for sampling frequency */

#define SAFFIREPRO_RATE_NOREBOOT		0x01cc
/* index is the value for this register */

static const unsigned int rates[] = {
	[0] = 0,
	[1] = 44100,
	[2] = 48000,
	[3] = 88200,
	[4] = 96000,
	[5] = 176400,
	[6] = 192000
};

/* saffire(no label)/saffire LE has metering */

#define SAFFIRE_OFFSET_METER			0x0100

#define SAFFIRE_LE_OFFSET_METER			0x0168


static inline int saffire_read_block(struct snd_bebob *bebob, u64 offset, u32 *buf, unsigned int size) { unsigned int i; int err; __be32 *tmp = (__be32 *)buf; err = snd_fw_transaction(bebob->unit, TCODE_READ_BLOCK_REQUEST, SAFFIRE_ADDRESS_BASE + offset, tmp, size, 0); if (err < 0) goto end; for (i = 0; i < size / sizeof(u32); i++) buf[i] = be32_to_cpu(tmp[i]); end: return err; }

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static inline int saffire_read_quad(struct snd_bebob *bebob, u64 offset, u32 *value) { int err; __be32 tmp; err = snd_fw_transaction(bebob->unit, TCODE_READ_QUADLET_REQUEST, SAFFIRE_ADDRESS_BASE + offset, &tmp, sizeof(__be32), 0); if (err < 0) goto end; *value = be32_to_cpu(tmp); end: return err; }

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static inline int saffire_write_quad(struct snd_bebob *bebob, u64 offset, u32 value) { __be32 data = cpu_to_be32(value); return snd_fw_transaction(bebob->unit, TCODE_WRITE_QUADLET_REQUEST, SAFFIRE_ADDRESS_BASE + offset, &data, sizeof(__be32), 0); }

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static enum snd_bebob_clock_type saffirepro_10_clk_src_types[] = { SND_BEBOB_CLOCK_TYPE_INTERNAL, SND_BEBOB_CLOCK_TYPE_EXTERNAL, /* S/PDIF */ SND_BEBOB_CLOCK_TYPE_EXTERNAL, /* Word Clock */ }; static enum snd_bebob_clock_type saffirepro_26_clk_src_types[] = { SND_BEBOB_CLOCK_TYPE_INTERNAL, SND_BEBOB_CLOCK_TYPE_EXTERNAL, /* S/PDIF */ SND_BEBOB_CLOCK_TYPE_EXTERNAL, /* ADAT1 */ SND_BEBOB_CLOCK_TYPE_EXTERNAL, /* ADAT2 */ SND_BEBOB_CLOCK_TYPE_EXTERNAL, /* Word Clock */ }; /* Value maps between registers and labels for SaffirePro 10/26. */ static const signed char saffirepro_clk_maps[][SAFFIREPRO_CLOCK_SOURCE_COUNT] = { /* SaffirePro 10 */ [0] = { [SAFFIREPRO_CLOCK_SOURCE_INTERNAL] = 0, [SAFFIREPRO_CLOCK_SOURCE_SKIP] = -1, /* not supported */ [SAFFIREPRO_CLOCK_SOURCE_SPDIF] = 1, [SAFFIREPRO_CLOCK_SOURCE_ADAT1] = -1, /* not supported */ [SAFFIREPRO_CLOCK_SOURCE_ADAT2] = -1, /* not supported */ [SAFFIREPRO_CLOCK_SOURCE_WORDCLOCK] = 2, }, /* SaffirePro 26 */ [1] = { [SAFFIREPRO_CLOCK_SOURCE_INTERNAL] = 0, [SAFFIREPRO_CLOCK_SOURCE_SKIP] = -1, /* not supported */ [SAFFIREPRO_CLOCK_SOURCE_SPDIF] = 1, [SAFFIREPRO_CLOCK_SOURCE_ADAT1] = 2, [SAFFIREPRO_CLOCK_SOURCE_ADAT2] = 3, [SAFFIREPRO_CLOCK_SOURCE_WORDCLOCK] = 4, } };
static int saffirepro_both_clk_freq_get(struct snd_bebob *bebob, unsigned int *rate) { u32 id; int err; err = saffire_read_quad(bebob, SAFFIREPRO_RATE_NOREBOOT, &id); if (err < 0) goto end; if (id >= ARRAY_SIZE(rates)) err = -EIO; else *rate = rates[id]; end: return err; }

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static int saffirepro_both_clk_freq_set(struct snd_bebob *bebob, unsigned int rate) { u32 id; for (id = 0; id < ARRAY_SIZE(rates); id++) { if (rates[id] == rate) break; } if (id == ARRAY_SIZE(rates)) return -EINVAL; return saffire_write_quad(bebob, SAFFIREPRO_RATE_NOREBOOT, id); }

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/* * query hardware for current clock source, return our internally * used clock index in *id, depending on hardware. */
static int saffirepro_both_clk_src_get(struct snd_bebob *bebob, unsigned int *id) { int err; u32 value; /* clock source read from hw register */ const signed char *map; err = saffire_read_quad(bebob, SAFFIREPRO_OFFSET_CLOCK_SOURCE, &value); if (err < 0) goto end; /* depending on hardware, use a different mapping */ if (bebob->spec->clock->types == saffirepro_10_clk_src_types) map = saffirepro_clk_maps[0]; else map = saffirepro_clk_maps[1]; /* In a case that this driver cannot handle the value of register. */ if (value >= SAFFIREPRO_CLOCK_SOURCE_COUNT || map[value] < 0) { err = -EIO; goto end; } *id = (unsigned int)map[value]; end: return err; }

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const struct snd_bebob_spec saffire_le_spec; static enum snd_bebob_clock_type saffire_both_clk_src_types[] = { SND_BEBOB_CLOCK_TYPE_INTERNAL, SND_BEBOB_CLOCK_TYPE_EXTERNAL, };
static int saffire_both_clk_src_get(struct snd_bebob *bebob, unsigned int *id) { int err; u32 value; err = saffire_read_quad(bebob, SAFFIRE_OFFSET_CLOCK_SOURCE, &value); if (err >= 0) *id = 0xff & value; return err; }

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; static const char *const saffire_le_meter_labels[] = { ANA_IN, ANA_IN, DIG_IN, ANA_OUT, ANA_OUT, ANA_OUT, ANA_OUT, STM_IN, STM_IN }; static const char *const saffire_meter_labels[] = { ANA_IN, ANA_IN, STM_IN, STM_IN, STM_IN, STM_IN, STM_IN, };
static int saffire_meter_get(struct snd_bebob *bebob, u32 *buf, unsigned int size) { const struct snd_bebob_meter_spec *spec = bebob->spec->meter; unsigned int channels; u64 offset; int err; if (spec->labels == saffire_le_meter_labels) offset = SAFFIRE_LE_OFFSET_METER; else offset = SAFFIRE_OFFSET_METER; channels = spec->num * 2; if (size < channels * sizeof(u32)) return -EIO; err = saffire_read_block(bebob, offset, buf, size); if (err >= 0 && spec->labels == saffire_le_meter_labels) { swap(buf[1], buf[3]); swap(buf[2], buf[3]); swap(buf[3], buf[4]); swap(buf[7], buf[10]); swap(buf[8], buf[10]); swap(buf[9], buf[11]); swap(buf[11], buf[12]); swap(buf[15], buf[16]); } return err; }

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static const struct snd_bebob_rate_spec saffirepro_both_rate_spec = { .get = &saffirepro_both_clk_freq_get, .set = &saffirepro_both_clk_freq_set, }; /* Saffire Pro 26 I/O */ static const struct snd_bebob_clock_spec saffirepro_26_clk_spec = { .num = ARRAY_SIZE(saffirepro_26_clk_src_types), .types = saffirepro_26_clk_src_types, .get = &saffirepro_both_clk_src_get, }; const struct snd_bebob_spec saffirepro_26_spec = { .clock = &saffirepro_26_clk_spec, .rate = &saffirepro_both_rate_spec, .meter = NULL }; /* Saffire Pro 10 I/O */ static const struct snd_bebob_clock_spec saffirepro_10_clk_spec = { .num = ARRAY_SIZE(saffirepro_10_clk_src_types), .types = saffirepro_10_clk_src_types, .get = &saffirepro_both_clk_src_get, }; const struct snd_bebob_spec saffirepro_10_spec = { .clock = &saffirepro_10_clk_spec, .rate = &saffirepro_both_rate_spec, .meter = NULL }; static const struct snd_bebob_rate_spec saffire_both_rate_spec = { .get = &snd_bebob_stream_get_rate, .set = &snd_bebob_stream_set_rate, }; static const struct snd_bebob_clock_spec saffire_both_clk_spec = { .num = ARRAY_SIZE(saffire_both_clk_src_types), .types = saffire_both_clk_src_types, .get = &saffire_both_clk_src_get, }; /* Saffire LE */ static const struct snd_bebob_meter_spec saffire_le_meter_spec = { .num = ARRAY_SIZE(saffire_le_meter_labels), .labels = saffire_le_meter_labels, .get = &saffire_meter_get, }; const struct snd_bebob_spec saffire_le_spec = { .clock = &saffire_both_clk_spec, .rate = &saffire_both_rate_spec, .meter = &saffire_le_meter_spec }; /* Saffire */ static const struct snd_bebob_meter_spec saffire_meter_spec = { .num = ARRAY_SIZE(saffire_meter_labels), .labels = saffire_meter_labels, .get = &saffire_meter_get, }; const struct snd_bebob_spec saffire_spec = { .clock = &saffire_both_clk_spec, .rate = &saffire_both_rate_spec, .meter = &saffire_meter_spec };

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