kernel/sound/firewire/bebob/bebob_focusrite.c

   1 /*
   2  * bebob_focusrite.c - a part of driver for BeBoB based devices
   3  *
   4  * Copyright (c) 2013-2014 Takashi Sakamoto
   5  *
   6  * Licensed under the terms of the GNU General Public License, version 2.
   7  */
   8
   9 #include "./bebob.h"
  10
  11 #define ANA_IN  "Analog In"
  12 #define DIG_IN  "Digital In"
  13 #define ANA_OUT "Analog Out"
  14 #define DIG_OUT "Digital Out"
  15 #define STM_IN  "Stream In"
  16
  17 #define SAFFIRE_ADDRESS_BASE                    0x000100000000ULL
  18
  19 #define SAFFIRE_OFFSET_CLOCK_SOURCE             0x00f8
  20 #define SAFFIREPRO_OFFSET_CLOCK_SOURCE          0x0174
  21
  22 /* whether sync to external device or not */
  23 #define SAFFIRE_OFFSET_CLOCK_SYNC_EXT           0x013c
  24 #define SAFFIRE_LE_OFFSET_CLOCK_SYNC_EXT        0x0432
  25 #define SAFFIREPRO_OFFSET_CLOCK_SYNC_EXT        0x0164
  26
  27 #define SAFFIRE_CLOCK_SOURCE_INTERNAL           0
  28 #define SAFFIRE_CLOCK_SOURCE_SPDIF              1
  29
  30 /* clock sources as returned from register of Saffire Pro 10 and 26 */
  31 #define SAFFIREPRO_CLOCK_SOURCE_INTERNAL        0
  32 #define SAFFIREPRO_CLOCK_SOURCE_SKIP            1 /* never used on hardware */
  33 #define SAFFIREPRO_CLOCK_SOURCE_SPDIF           2
  34 #define SAFFIREPRO_CLOCK_SOURCE_ADAT1           3 /* not used on s.pro. 10 */
  35 #define SAFFIREPRO_CLOCK_SOURCE_ADAT2           4 /* not used on s.pro. 10 */
  36 #define SAFFIREPRO_CLOCK_SOURCE_WORDCLOCK       5
  37 #define SAFFIREPRO_CLOCK_SOURCE_COUNT           6
  38
  39 /* S/PDIF, ADAT1, ADAT2 is enabled or not. three quadlets */
  40 #define SAFFIREPRO_ENABLE_DIG_IFACES            0x01a4
  41
  42 /* saffirepro has its own parameter for sampling frequency */
  43 #define SAFFIREPRO_RATE_NOREBOOT                0x01cc
  44 /* index is the value for this register */
  45 static const unsigned int rates[] = {
  46         [0] = 0,
  47         [1] = 44100,
  48         [2] = 48000,
  49         [3] = 88200,
  50         [4] = 96000,
  51         [5] = 176400,
  52         [6] = 192000
  53 };
  54
  55 /* saffire(no label)/saffire LE has metering */
  56 #define SAFFIRE_OFFSET_METER                    0x0100
  57 #define SAFFIRE_LE_OFFSET_METER                 0x0168
  58
  59 static inline int
  60 saffire_read_block(struct snd_bebob *bebob, u64 offset,
  61                    u32 *buf, unsigned int size)
  62 {
  63         unsigned int i;
  64         int err;
  65         __be32 *tmp = (__be32 *)buf;
  66
  67         err =  snd_fw_transaction(bebob->unit, TCODE_READ_BLOCK_REQUEST,
  68                                   SAFFIRE_ADDRESS_BASE + offset,
  69                                   tmp, size, 0);
  70         if (err < 0)
  71                 goto end;
  72
  73         for (i = 0; i < size / sizeof(u32); i++)
  74                 buf[i] = be32_to_cpu(tmp[i]);
  75 end:
  76         return err;
  77 }
  78
  79 static inline int
  80 saffire_read_quad(struct snd_bebob *bebob, u64 offset, u32 *value)
  81 {
  82         int err;
  83         __be32 tmp;
  84
  85         err = snd_fw_transaction(bebob->unit, TCODE_READ_QUADLET_REQUEST,
  86                                  SAFFIRE_ADDRESS_BASE + offset,
  87                                  &tmp, sizeof(__be32), 0);
  88         if (err < 0)
  89                 goto end;
  90
  91         *value = be32_to_cpu(tmp);
  92 end:
  93         return err;
  94 }
  95
  96 static inline int
  97 saffire_write_quad(struct snd_bebob *bebob, u64 offset, u32 value)
  98 {
  99         __be32 data = cpu_to_be32(value);
 100
 101         return snd_fw_transaction(bebob->unit, TCODE_WRITE_QUADLET_REQUEST,
 102                                   SAFFIRE_ADDRESS_BASE + offset,
 103                                   &data, sizeof(__be32), 0);
 104 }
 105
 106 static const char *const saffirepro_10_clk_src_labels[] = {
 107         SND_BEBOB_CLOCK_INTERNAL, "S/PDIF", "Word Clock"
 108 };
 109 static const char *const saffirepro_26_clk_src_labels[] = {
 110         SND_BEBOB_CLOCK_INTERNAL, "S/PDIF", "ADAT1", "ADAT2", "Word Clock"
 111 };
 112 /* Value maps between registers and labels for SaffirePro 10/26. */
 113 static const signed char saffirepro_clk_maps[][SAFFIREPRO_CLOCK_SOURCE_COUNT] = {
 114         /* SaffirePro 10 */
 115         [0] = {
 116                 [SAFFIREPRO_CLOCK_SOURCE_INTERNAL]  =  0,
 117                 [SAFFIREPRO_CLOCK_SOURCE_SKIP]      = -1, /* not supported */
 118                 [SAFFIREPRO_CLOCK_SOURCE_SPDIF]     =  1,
 119                 [SAFFIREPRO_CLOCK_SOURCE_ADAT1]     = -1, /* not supported */
 120                 [SAFFIREPRO_CLOCK_SOURCE_ADAT2]     = -1, /* not supported */
 121                 [SAFFIREPRO_CLOCK_SOURCE_WORDCLOCK] =  2,
 122         },
 123         /* SaffirePro 26 */
 124         [1] = {
 125                 [SAFFIREPRO_CLOCK_SOURCE_INTERNAL]  =  0,
 126                 [SAFFIREPRO_CLOCK_SOURCE_SKIP]      = -1, /* not supported */
 127                 [SAFFIREPRO_CLOCK_SOURCE_SPDIF]     =  1,
 128                 [SAFFIREPRO_CLOCK_SOURCE_ADAT1]     =  2,
 129                 [SAFFIREPRO_CLOCK_SOURCE_ADAT2]     =  3,
 130                 [SAFFIREPRO_CLOCK_SOURCE_WORDCLOCK] =  4,
 131         }
 132 };
 133
 134 static int
 135 saffirepro_both_clk_freq_get(struct snd_bebob *bebob, unsigned int *rate)
 136 {
 137         u32 id;
 138         int err;
 139
 140         err = saffire_read_quad(bebob, SAFFIREPRO_RATE_NOREBOOT, &id);
 141         if (err < 0)
 142                 goto end;
 143         if (id >= ARRAY_SIZE(rates))
 144                 err = -EIO;
 145         else
 146                 *rate = rates[id];
 147 end:
 148         return err;
 149 }
 150 static int
 151 saffirepro_both_clk_freq_set(struct snd_bebob *bebob, unsigned int rate)
 152 {
 153         u32 id;
 154
 155         for (id = 0; id < ARRAY_SIZE(rates); id++) {
 156                 if (rates[id] == rate)
 157                         break;
 158         }
 159         if (id == ARRAY_SIZE(rates))
 160                 return -EINVAL;
 161
 162         return saffire_write_quad(bebob, SAFFIREPRO_RATE_NOREBOOT, id);
 163 }
 164
 165 /*
 166  * query hardware for current clock source, return our internally
 167  * used clock index in *id, depending on hardware.
 168  */
 169 static int
 170 saffirepro_both_clk_src_get(struct snd_bebob *bebob, unsigned int *id)
 171 {
 172         int err;
 173         u32 value;       /* clock source read from hw register */
 174         const signed char *map;
 175
 176         err = saffire_read_quad(bebob, SAFFIREPRO_OFFSET_CLOCK_SOURCE, &value);
 177         if (err < 0)
 178                 goto end;
 179
 180         /* depending on hardware, use a different mapping */
 181         if (bebob->spec->clock->labels == saffirepro_10_clk_src_labels)
 182                 map = saffirepro_clk_maps[0];
 183         else
 184                 map = saffirepro_clk_maps[1];
 185
 186         /* In a case that this driver cannot handle the value of register. */
 187         if (value >= SAFFIREPRO_CLOCK_SOURCE_COUNT || map[value] < 0) {
 188                 err = -EIO;
 189                 goto end;
 190         }
 191
 192         *id = (unsigned int)map[value];
 193 end:
 194         return err;
 195 }
 196
 197 struct snd_bebob_spec saffire_le_spec;
 198 static const char *const saffire_both_clk_src_labels[] = {
 199         SND_BEBOB_CLOCK_INTERNAL, "S/PDIF"
 200 };
 201 static int
 202 saffire_both_clk_src_get(struct snd_bebob *bebob, unsigned int *id)
 203 {
 204         int err;
 205         u32 value;
 206
 207         err = saffire_read_quad(bebob, SAFFIRE_OFFSET_CLOCK_SOURCE, &value);
 208         if (err >= 0)
 209                 *id = 0xff & value;
 210
 211         return err;
 212 };
 213 static const char *const saffire_le_meter_labels[] = {
 214         ANA_IN, ANA_IN, DIG_IN,
 215         ANA_OUT, ANA_OUT, ANA_OUT, ANA_OUT,
 216         STM_IN, STM_IN
 217 };
 218 static const char *const saffire_meter_labels[] = {
 219         ANA_IN, ANA_IN,
 220         STM_IN, STM_IN, STM_IN, STM_IN, STM_IN,
 221 };
 222 static int
 223 saffire_meter_get(struct snd_bebob *bebob, u32 *buf, unsigned int size)
 224 {
 225         struct snd_bebob_meter_spec *spec = bebob->spec->meter;
 226         unsigned int channels;
 227         u64 offset;
 228         int err;
 229
 230         if (spec->labels == saffire_le_meter_labels)
 231                 offset = SAFFIRE_LE_OFFSET_METER;
 232         else
 233                 offset = SAFFIRE_OFFSET_METER;
 234
 235         channels = spec->num * 2;
 236         if (size < channels * sizeof(u32))
 237                 return -EIO;
 238
 239         err = saffire_read_block(bebob, offset, buf, size);
 240         if (err >= 0 && spec->labels == saffire_le_meter_labels) {
 241                 swap(buf[1], buf[3]);
 242                 swap(buf[2], buf[3]);
 243                 swap(buf[3], buf[4]);
 244
 245                 swap(buf[7], buf[10]);
 246                 swap(buf[8], buf[10]);
 247                 swap(buf[9], buf[11]);
 248                 swap(buf[11], buf[12]);
 249
 250                 swap(buf[15], buf[16]);
 251         }
 252
 253         return err;
 254 }
 255
 256 static struct snd_bebob_rate_spec saffirepro_both_rate_spec = {
 257         .get    = &saffirepro_both_clk_freq_get,
 258         .set    = &saffirepro_both_clk_freq_set,
 259 };
 260 /* Saffire Pro 26 I/O  */
 261 static struct snd_bebob_clock_spec saffirepro_26_clk_spec = {
 262         .num    = ARRAY_SIZE(saffirepro_26_clk_src_labels),
 263         .labels = saffirepro_26_clk_src_labels,
 264         .get    = &saffirepro_both_clk_src_get,
 265 };
 266 struct snd_bebob_spec saffirepro_26_spec = {
 267         .clock  = &saffirepro_26_clk_spec,
 268         .rate   = &saffirepro_both_rate_spec,
 269         .meter  = NULL
 270 };
 271 /* Saffire Pro 10 I/O */
 272 static struct snd_bebob_clock_spec saffirepro_10_clk_spec = {
 273         .num    = ARRAY_SIZE(saffirepro_10_clk_src_labels),
 274         .labels = saffirepro_10_clk_src_labels,
 275         .get    = &saffirepro_both_clk_src_get,
 276 };
 277 struct snd_bebob_spec saffirepro_10_spec = {
 278         .clock  = &saffirepro_10_clk_spec,
 279         .rate   = &saffirepro_both_rate_spec,
 280         .meter  = NULL
 281 };
 282
 283 static struct snd_bebob_rate_spec saffire_both_rate_spec = {
 284         .get    = &snd_bebob_stream_get_rate,
 285         .set    = &snd_bebob_stream_set_rate,
 286 };
 287 static struct snd_bebob_clock_spec saffire_both_clk_spec = {
 288         .num    = ARRAY_SIZE(saffire_both_clk_src_labels),
 289         .labels = saffire_both_clk_src_labels,
 290         .get    = &saffire_both_clk_src_get,
 291 };
 292 /* Saffire LE */
 293 static struct snd_bebob_meter_spec saffire_le_meter_spec = {
 294         .num    = ARRAY_SIZE(saffire_le_meter_labels),
 295         .labels = saffire_le_meter_labels,
 296         .get    = &saffire_meter_get,
 297 };
 298 struct snd_bebob_spec saffire_le_spec = {
 299         .clock  = &saffire_both_clk_spec,
 300         .rate   = &saffire_both_rate_spec,
 301         .meter  = &saffire_le_meter_spec
 302 };
 303 /* Saffire */
 304 static struct snd_bebob_meter_spec saffire_meter_spec = {
 305         .num    = ARRAY_SIZE(saffire_meter_labels),
 306         .labels = saffire_meter_labels,
 307         .get    = &saffire_meter_get,
 308 };
 309 struct snd_bebob_spec saffire_spec = {
 310         .clock  = &saffire_both_clk_spec,
 311         .rate   = &saffire_both_rate_spec,
 312         .meter  = &saffire_meter_spec
 313 };