Merge tag 'pwm/for-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry...
[sfrench/cifs-2.6.git] / sound / firewire / bebob / bebob_focusrite.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * bebob_focusrite.c - a part of driver for BeBoB based devices
4  *
5  * Copyright (c) 2013-2014 Takashi Sakamoto
6  */
7
8 #include "./bebob.h"
9
10 #define ANA_IN  "Analog In"
11 #define DIG_IN  "Digital In"
12 #define ANA_OUT "Analog Out"
13 #define DIG_OUT "Digital Out"
14 #define STM_IN  "Stream In"
15
16 #define SAFFIRE_ADDRESS_BASE                    0x000100000000ULL
17
18 #define SAFFIRE_OFFSET_CLOCK_SOURCE             0x00f8
19 #define SAFFIREPRO_OFFSET_CLOCK_SOURCE          0x0174
20
21 /* whether sync to external device or not */
22 #define SAFFIRE_OFFSET_CLOCK_SYNC_EXT           0x013c
23 #define SAFFIRE_LE_OFFSET_CLOCK_SYNC_EXT        0x0432
24 #define SAFFIREPRO_OFFSET_CLOCK_SYNC_EXT        0x0164
25
26 #define SAFFIRE_CLOCK_SOURCE_INTERNAL           0
27 #define SAFFIRE_CLOCK_SOURCE_SPDIF              1
28
29 /* clock sources as returned from register of Saffire Pro 10 and 26 */
30 #define SAFFIREPRO_CLOCK_SOURCE_SELECT_MASK     0x000000ff
31 #define SAFFIREPRO_CLOCK_SOURCE_DETECT_MASK     0x0000ff00
32 #define SAFFIREPRO_CLOCK_SOURCE_INTERNAL        0
33 #define SAFFIREPRO_CLOCK_SOURCE_SKIP            1 /* never used on hardware */
34 #define SAFFIREPRO_CLOCK_SOURCE_SPDIF           2
35 #define SAFFIREPRO_CLOCK_SOURCE_ADAT1           3 /* not used on s.pro. 10 */
36 #define SAFFIREPRO_CLOCK_SOURCE_ADAT2           4 /* not used on s.pro. 10 */
37 #define SAFFIREPRO_CLOCK_SOURCE_WORDCLOCK       5
38 #define SAFFIREPRO_CLOCK_SOURCE_COUNT           6
39
40 /* S/PDIF, ADAT1, ADAT2 is enabled or not. three quadlets */
41 #define SAFFIREPRO_ENABLE_DIG_IFACES            0x01a4
42
43 /* saffirepro has its own parameter for sampling frequency */
44 #define SAFFIREPRO_RATE_NOREBOOT                0x01cc
45 /* index is the value for this register */
46 static const unsigned int rates[] = {
47         [0] = 0,
48         [1] = 44100,
49         [2] = 48000,
50         [3] = 88200,
51         [4] = 96000,
52         [5] = 176400,
53         [6] = 192000
54 };
55
56 /* saffire(no label)/saffire LE has metering */
57 #define SAFFIRE_OFFSET_METER                    0x0100
58 #define SAFFIRE_LE_OFFSET_METER                 0x0168
59
60 static inline int
61 saffire_read_block(struct snd_bebob *bebob, u64 offset,
62                    u32 *buf, unsigned int size)
63 {
64         unsigned int i;
65         int err;
66         __be32 *tmp = (__be32 *)buf;
67
68         err =  snd_fw_transaction(bebob->unit, TCODE_READ_BLOCK_REQUEST,
69                                   SAFFIRE_ADDRESS_BASE + offset,
70                                   tmp, size, 0);
71         if (err < 0)
72                 goto end;
73
74         for (i = 0; i < size / sizeof(u32); i++)
75                 buf[i] = be32_to_cpu(tmp[i]);
76 end:
77         return err;
78 }
79
80 static inline int
81 saffire_read_quad(struct snd_bebob *bebob, u64 offset, u32 *value)
82 {
83         int err;
84         __be32 tmp;
85
86         err = snd_fw_transaction(bebob->unit, TCODE_READ_QUADLET_REQUEST,
87                                  SAFFIRE_ADDRESS_BASE + offset,
88                                  &tmp, sizeof(__be32), 0);
89         if (err < 0)
90                 goto end;
91
92         *value = be32_to_cpu(tmp);
93 end:
94         return err;
95 }
96
97 static inline int
98 saffire_write_quad(struct snd_bebob *bebob, u64 offset, u32 value)
99 {
100         __be32 data = cpu_to_be32(value);
101
102         return snd_fw_transaction(bebob->unit, TCODE_WRITE_QUADLET_REQUEST,
103                                   SAFFIRE_ADDRESS_BASE + offset,
104                                   &data, sizeof(__be32), 0);
105 }
106
107 static const enum snd_bebob_clock_type saffirepro_10_clk_src_types[] = {
108         SND_BEBOB_CLOCK_TYPE_INTERNAL,
109         SND_BEBOB_CLOCK_TYPE_EXTERNAL,  /* S/PDIF */
110         SND_BEBOB_CLOCK_TYPE_EXTERNAL,  /* Word Clock */
111 };
112 static const enum snd_bebob_clock_type saffirepro_26_clk_src_types[] = {
113         SND_BEBOB_CLOCK_TYPE_INTERNAL,
114         SND_BEBOB_CLOCK_TYPE_EXTERNAL,  /* S/PDIF */
115         SND_BEBOB_CLOCK_TYPE_EXTERNAL,  /* ADAT1 */
116         SND_BEBOB_CLOCK_TYPE_EXTERNAL,  /* ADAT2 */
117         SND_BEBOB_CLOCK_TYPE_EXTERNAL,  /* Word Clock */
118 };
119 /* Value maps between registers and labels for SaffirePro 10/26. */
120 static const signed char saffirepro_clk_maps[][SAFFIREPRO_CLOCK_SOURCE_COUNT] = {
121         /* SaffirePro 10 */
122         [0] = {
123                 [SAFFIREPRO_CLOCK_SOURCE_INTERNAL]  =  0,
124                 [SAFFIREPRO_CLOCK_SOURCE_SKIP]      = -1, /* not supported */
125                 [SAFFIREPRO_CLOCK_SOURCE_SPDIF]     =  1,
126                 [SAFFIREPRO_CLOCK_SOURCE_ADAT1]     = -1, /* not supported */
127                 [SAFFIREPRO_CLOCK_SOURCE_ADAT2]     = -1, /* not supported */
128                 [SAFFIREPRO_CLOCK_SOURCE_WORDCLOCK] =  2,
129         },
130         /* SaffirePro 26 */
131         [1] = {
132                 [SAFFIREPRO_CLOCK_SOURCE_INTERNAL]  =  0,
133                 [SAFFIREPRO_CLOCK_SOURCE_SKIP]      = -1, /* not supported */
134                 [SAFFIREPRO_CLOCK_SOURCE_SPDIF]     =  1,
135                 [SAFFIREPRO_CLOCK_SOURCE_ADAT1]     =  2,
136                 [SAFFIREPRO_CLOCK_SOURCE_ADAT2]     =  3,
137                 [SAFFIREPRO_CLOCK_SOURCE_WORDCLOCK] =  4,
138         }
139 };
140
141 static int
142 saffirepro_both_clk_freq_get(struct snd_bebob *bebob, unsigned int *rate)
143 {
144         u32 id;
145         int err;
146
147         err = saffire_read_quad(bebob, SAFFIREPRO_RATE_NOREBOOT, &id);
148         if (err < 0)
149                 goto end;
150         if (id >= ARRAY_SIZE(rates))
151                 err = -EIO;
152         else
153                 *rate = rates[id];
154 end:
155         return err;
156 }
157 static int
158 saffirepro_both_clk_freq_set(struct snd_bebob *bebob, unsigned int rate)
159 {
160         u32 id;
161
162         for (id = 0; id < ARRAY_SIZE(rates); id++) {
163                 if (rates[id] == rate)
164                         break;
165         }
166         if (id == ARRAY_SIZE(rates))
167                 return -EINVAL;
168
169         return saffire_write_quad(bebob, SAFFIREPRO_RATE_NOREBOOT, id);
170 }
171
172 /*
173  * query hardware for current clock source, return our internally
174  * used clock index in *id, depending on hardware.
175  */
176 static int
177 saffirepro_both_clk_src_get(struct snd_bebob *bebob, unsigned int *id)
178 {
179         int err;
180         u32 value;       /* clock source read from hw register */
181         const signed char *map;
182
183         err = saffire_read_quad(bebob, SAFFIREPRO_OFFSET_CLOCK_SOURCE, &value);
184         if (err < 0)
185                 goto end;
186
187         /* depending on hardware, use a different mapping */
188         if (bebob->spec->clock->types == saffirepro_10_clk_src_types)
189                 map = saffirepro_clk_maps[0];
190         else
191                 map = saffirepro_clk_maps[1];
192
193         /* In a case that this driver cannot handle the value of register. */
194         value &= SAFFIREPRO_CLOCK_SOURCE_SELECT_MASK;
195         if (value >= SAFFIREPRO_CLOCK_SOURCE_COUNT || map[value] < 0) {
196                 err = -EIO;
197                 goto end;
198         }
199
200         *id = (unsigned int)map[value];
201 end:
202         return err;
203 }
204
205 const struct snd_bebob_spec saffire_le_spec;
206 static const enum snd_bebob_clock_type saffire_both_clk_src_types[] = {
207         SND_BEBOB_CLOCK_TYPE_INTERNAL,
208         SND_BEBOB_CLOCK_TYPE_EXTERNAL,
209 };
210 static int
211 saffire_both_clk_src_get(struct snd_bebob *bebob, unsigned int *id)
212 {
213         int err;
214         u32 value;
215
216         err = saffire_read_quad(bebob, SAFFIRE_OFFSET_CLOCK_SOURCE, &value);
217         if (err >= 0)
218                 *id = 0xff & value;
219
220         return err;
221 };
222 static const char *const saffire_le_meter_labels[] = {
223         ANA_IN, ANA_IN, DIG_IN,
224         ANA_OUT, ANA_OUT, ANA_OUT, ANA_OUT,
225         STM_IN, STM_IN
226 };
227 static const char *const saffire_meter_labels[] = {
228         ANA_IN, ANA_IN,
229         STM_IN, STM_IN, STM_IN, STM_IN, STM_IN,
230 };
231 static int
232 saffire_meter_get(struct snd_bebob *bebob, u32 *buf, unsigned int size)
233 {
234         const struct snd_bebob_meter_spec *spec = bebob->spec->meter;
235         unsigned int channels;
236         u64 offset;
237         int err;
238
239         if (spec->labels == saffire_le_meter_labels)
240                 offset = SAFFIRE_LE_OFFSET_METER;
241         else
242                 offset = SAFFIRE_OFFSET_METER;
243
244         channels = spec->num * 2;
245         if (size < channels * sizeof(u32))
246                 return -EIO;
247
248         err = saffire_read_block(bebob, offset, buf, size);
249         if (err >= 0 && spec->labels == saffire_le_meter_labels) {
250                 swap(buf[1], buf[3]);
251                 swap(buf[2], buf[3]);
252                 swap(buf[3], buf[4]);
253
254                 swap(buf[7], buf[10]);
255                 swap(buf[8], buf[10]);
256                 swap(buf[9], buf[11]);
257                 swap(buf[11], buf[12]);
258
259                 swap(buf[15], buf[16]);
260         }
261
262         return err;
263 }
264
265 static const struct snd_bebob_rate_spec saffirepro_both_rate_spec = {
266         .get    = &saffirepro_both_clk_freq_get,
267         .set    = &saffirepro_both_clk_freq_set,
268 };
269 /* Saffire Pro 26 I/O  */
270 static const struct snd_bebob_clock_spec saffirepro_26_clk_spec = {
271         .num    = ARRAY_SIZE(saffirepro_26_clk_src_types),
272         .types  = saffirepro_26_clk_src_types,
273         .get    = &saffirepro_both_clk_src_get,
274 };
275 const struct snd_bebob_spec saffirepro_26_spec = {
276         .clock  = &saffirepro_26_clk_spec,
277         .rate   = &saffirepro_both_rate_spec,
278         .meter  = NULL
279 };
280 /* Saffire Pro 10 I/O */
281 static const struct snd_bebob_clock_spec saffirepro_10_clk_spec = {
282         .num    = ARRAY_SIZE(saffirepro_10_clk_src_types),
283         .types  = saffirepro_10_clk_src_types,
284         .get    = &saffirepro_both_clk_src_get,
285 };
286 const struct snd_bebob_spec saffirepro_10_spec = {
287         .clock  = &saffirepro_10_clk_spec,
288         .rate   = &saffirepro_both_rate_spec,
289         .meter  = NULL
290 };
291
292 static const struct snd_bebob_rate_spec saffire_both_rate_spec = {
293         .get    = &snd_bebob_stream_get_rate,
294         .set    = &snd_bebob_stream_set_rate,
295 };
296 static const struct snd_bebob_clock_spec saffire_both_clk_spec = {
297         .num    = ARRAY_SIZE(saffire_both_clk_src_types),
298         .types  = saffire_both_clk_src_types,
299         .get    = &saffire_both_clk_src_get,
300 };
301 /* Saffire LE */
302 static const struct snd_bebob_meter_spec saffire_le_meter_spec = {
303         .num    = ARRAY_SIZE(saffire_le_meter_labels),
304         .labels = saffire_le_meter_labels,
305         .get    = &saffire_meter_get,
306 };
307 const struct snd_bebob_spec saffire_le_spec = {
308         .clock  = &saffire_both_clk_spec,
309         .rate   = &saffire_both_rate_spec,
310         .meter  = &saffire_le_meter_spec
311 };
312 /* Saffire */
313 static const struct snd_bebob_meter_spec saffire_meter_spec = {
314         .num    = ARRAY_SIZE(saffire_meter_labels),
315         .labels = saffire_meter_labels,
316         .get    = &saffire_meter_get,
317 };
318 const struct snd_bebob_spec saffire_spec = {
319         .clock  = &saffire_both_clk_spec,
320         .rate   = &saffire_both_rate_spec,
321         .meter  = &saffire_meter_spec
322 };