Root/
1 | /* |
2 | * Driver for DBRI sound chip found on Sparcs. |
3 | * Copyright (C) 2004, 2005 Martin Habets (mhabets@users.sourceforge.net) |
4 | * |
5 | * Converted to ring buffered version by Krzysztof Helt (krzysztof.h1@wp.pl) |
6 | * |
7 | * Based entirely upon drivers/sbus/audio/dbri.c which is: |
8 | * Copyright (C) 1997 Rudolf Koenig (rfkoenig@immd4.informatik.uni-erlangen.de) |
9 | * Copyright (C) 1998, 1999 Brent Baccala (baccala@freesoft.org) |
10 | * |
11 | * This is the low level driver for the DBRI & MMCODEC duo used for ISDN & AUDIO |
12 | * on Sun SPARCStation 10, 20, LX and Voyager models. |
13 | * |
14 | * - DBRI: AT&T T5900FX Dual Basic Rates ISDN Interface. It is a 32 channel |
15 | * data time multiplexer with ISDN support (aka T7259) |
16 | * Interfaces: SBus,ISDN NT & TE, CHI, 4 bits parallel. |
17 | * CHI: (spelled ki) Concentration Highway Interface (AT&T or Intel bus ?). |
18 | * Documentation: |
19 | * - "STP 4000SBus Dual Basic Rate ISDN (DBRI) Transceiver" from |
20 | * Sparc Technology Business (courtesy of Sun Support) |
21 | * - Data sheet of the T7903, a newer but very similar ISA bus equivalent |
22 | * available from the Lucent (formerly AT&T microelectronics) home |
23 | * page. |
24 | * - http://www.freesoft.org/Linux/DBRI/ |
25 | * - MMCODEC: Crystal Semiconductor CS4215 16 bit Multimedia Audio Codec |
26 | * Interfaces: CHI, Audio In & Out, 2 bits parallel |
27 | * Documentation: from the Crystal Semiconductor home page. |
28 | * |
29 | * The DBRI is a 32 pipe machine, each pipe can transfer some bits between |
30 | * memory and a serial device (long pipes, no. 0-15) or between two serial |
31 | * devices (short pipes, no. 16-31), or simply send a fixed data to a serial |
32 | * device (short pipes). |
33 | * A timeslot defines the bit-offset and no. of bits read from a serial device. |
34 | * The timeslots are linked to 6 circular lists, one for each direction for |
35 | * each serial device (NT,TE,CHI). A timeslot is associated to 1 or 2 pipes |
36 | * (the second one is a monitor/tee pipe, valid only for serial input). |
37 | * |
38 | * The mmcodec is connected via the CHI bus and needs the data & some |
39 | * parameters (volume, output selection) time multiplexed in 8 byte |
40 | * chunks. It also has a control mode, which serves for audio format setting. |
41 | * |
42 | * Looking at the CS4215 data sheet it is easy to set up 2 or 4 codecs on |
43 | * the same CHI bus, so I thought perhaps it is possible to use the on-board |
44 | * & the speakerbox codec simultaneously, giving 2 (not very independent :-) |
45 | * audio devices. But the SUN HW group decided against it, at least on my |
46 | * LX the speakerbox connector has at least 1 pin missing and 1 wrongly |
47 | * connected. |
48 | * |
49 | * I've tried to stick to the following function naming conventions: |
50 | * snd_* ALSA stuff |
51 | * cs4215_* CS4215 codec specific stuff |
52 | * dbri_* DBRI high-level stuff |
53 | * other DBRI low-level stuff |
54 | */ |
55 | |
56 | #include <linux/interrupt.h> |
57 | #include <linux/delay.h> |
58 | #include <linux/irq.h> |
59 | #include <linux/io.h> |
60 | #include <linux/dma-mapping.h> |
61 | #include <linux/gfp.h> |
62 | |
63 | #include <sound/core.h> |
64 | #include <sound/pcm.h> |
65 | #include <sound/pcm_params.h> |
66 | #include <sound/info.h> |
67 | #include <sound/control.h> |
68 | #include <sound/initval.h> |
69 | |
70 | #include <linux/of.h> |
71 | #include <linux/of_device.h> |
72 | #include <linux/atomic.h> |
73 | |
74 | MODULE_AUTHOR("Rudolf Koenig, Brent Baccala and Martin Habets"); |
75 | MODULE_DESCRIPTION("Sun DBRI"); |
76 | MODULE_LICENSE("GPL"); |
77 | MODULE_SUPPORTED_DEVICE("{{Sun,DBRI}}"); |
78 | |
79 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ |
80 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ |
81 | /* Enable this card */ |
82 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
83 | |
84 | module_param_array(index, int, NULL, 0444); |
85 | MODULE_PARM_DESC(index, "Index value for Sun DBRI soundcard."); |
86 | module_param_array(id, charp, NULL, 0444); |
87 | MODULE_PARM_DESC(id, "ID string for Sun DBRI soundcard."); |
88 | module_param_array(enable, bool, NULL, 0444); |
89 | MODULE_PARM_DESC(enable, "Enable Sun DBRI soundcard."); |
90 | |
91 | #undef DBRI_DEBUG |
92 | |
93 | #define D_INT (1<<0) |
94 | #define D_GEN (1<<1) |
95 | #define D_CMD (1<<2) |
96 | #define D_MM (1<<3) |
97 | #define D_USR (1<<4) |
98 | #define D_DESC (1<<5) |
99 | |
100 | static int dbri_debug; |
101 | module_param(dbri_debug, int, 0644); |
102 | MODULE_PARM_DESC(dbri_debug, "Debug value for Sun DBRI soundcard."); |
103 | |
104 | #ifdef DBRI_DEBUG |
105 | static char *cmds[] = { |
106 | "WAIT", "PAUSE", "JUMP", "IIQ", "REX", "SDP", "CDP", "DTS", |
107 | "SSP", "CHI", "NT", "TE", "CDEC", "TEST", "CDM", "RESRV" |
108 | }; |
109 | |
110 | #define dprintk(a, x...) if (dbri_debug & a) printk(KERN_DEBUG x) |
111 | |
112 | #else |
113 | #define dprintk(a, x...) do { } while (0) |
114 | |
115 | #endif /* DBRI_DEBUG */ |
116 | |
117 | #define DBRI_CMD(cmd, intr, value) ((cmd << 28) | \ |
118 | (intr << 27) | \ |
119 | value) |
120 | |
121 | /*************************************************************************** |
122 | CS4215 specific definitions and structures |
123 | ****************************************************************************/ |
124 | |
125 | struct cs4215 { |
126 | __u8 data[4]; /* Data mode: Time slots 5-8 */ |
127 | __u8 ctrl[4]; /* Ctrl mode: Time slots 1-4 */ |
128 | __u8 onboard; |
129 | __u8 offset; /* Bit offset from frame sync to time slot 1 */ |
130 | volatile __u32 status; |
131 | volatile __u32 version; |
132 | __u8 precision; /* In bits, either 8 or 16 */ |
133 | __u8 channels; /* 1 or 2 */ |
134 | }; |
135 | |
136 | /* |
137 | * Control mode first |
138 | */ |
139 | |
140 | /* Time Slot 1, Status register */ |
141 | #define CS4215_CLB (1<<2) /* Control Latch Bit */ |
142 | #define CS4215_OLB (1<<3) /* 1: line: 2.0V, speaker 4V */ |
143 | /* 0: line: 2.8V, speaker 8V */ |
144 | #define CS4215_MLB (1<<4) /* 1: Microphone: 20dB gain disabled */ |
145 | #define CS4215_RSRVD_1 (1<<5) |
146 | |
147 | /* Time Slot 2, Data Format Register */ |
148 | #define CS4215_DFR_LINEAR16 0 |
149 | #define CS4215_DFR_ULAW 1 |
150 | #define CS4215_DFR_ALAW 2 |
151 | #define CS4215_DFR_LINEAR8 3 |
152 | #define CS4215_DFR_STEREO (1<<2) |
153 | static struct { |
154 | unsigned short freq; |
155 | unsigned char xtal; |
156 | unsigned char csval; |
157 | } CS4215_FREQ[] = { |
158 | { 8000, (1 << 4), (0 << 3) }, |
159 | { 16000, (1 << 4), (1 << 3) }, |
160 | { 27429, (1 << 4), (2 << 3) }, /* Actually 24428.57 */ |
161 | { 32000, (1 << 4), (3 << 3) }, |
162 | /* { NA, (1 << 4), (4 << 3) }, */ |
163 | /* { NA, (1 << 4), (5 << 3) }, */ |
164 | { 48000, (1 << 4), (6 << 3) }, |
165 | { 9600, (1 << 4), (7 << 3) }, |
166 | { 5512, (2 << 4), (0 << 3) }, /* Actually 5512.5 */ |
167 | { 11025, (2 << 4), (1 << 3) }, |
168 | { 18900, (2 << 4), (2 << 3) }, |
169 | { 22050, (2 << 4), (3 << 3) }, |
170 | { 37800, (2 << 4), (4 << 3) }, |
171 | { 44100, (2 << 4), (5 << 3) }, |
172 | { 33075, (2 << 4), (6 << 3) }, |
173 | { 6615, (2 << 4), (7 << 3) }, |
174 | { 0, 0, 0} |
175 | }; |
176 | |
177 | #define CS4215_HPF (1<<7) /* High Pass Filter, 1: Enabled */ |
178 | |
179 | #define CS4215_12_MASK 0xfcbf /* Mask off reserved bits in slot 1 & 2 */ |
180 | |
181 | /* Time Slot 3, Serial Port Control register */ |
182 | #define CS4215_XEN (1<<0) /* 0: Enable serial output */ |
183 | #define CS4215_XCLK (1<<1) /* 1: Master mode: Generate SCLK */ |
184 | #define CS4215_BSEL_64 (0<<2) /* Bitrate: 64 bits per frame */ |
185 | #define CS4215_BSEL_128 (1<<2) |
186 | #define CS4215_BSEL_256 (2<<2) |
187 | #define CS4215_MCK_MAST (0<<4) /* Master clock */ |
188 | #define CS4215_MCK_XTL1 (1<<4) /* 24.576 MHz clock source */ |
189 | #define CS4215_MCK_XTL2 (2<<4) /* 16.9344 MHz clock source */ |
190 | #define CS4215_MCK_CLK1 (3<<4) /* Clockin, 256 x Fs */ |
191 | #define CS4215_MCK_CLK2 (4<<4) /* Clockin, see DFR */ |
192 | |
193 | /* Time Slot 4, Test Register */ |
194 | #define CS4215_DAD (1<<0) /* 0:Digital-Dig loop, 1:Dig-Analog-Dig loop */ |
195 | #define CS4215_ENL (1<<1) /* Enable Loopback Testing */ |
196 | |
197 | /* Time Slot 5, Parallel Port Register */ |
198 | /* Read only here and the same as the in data mode */ |
199 | |
200 | /* Time Slot 6, Reserved */ |
201 | |
202 | /* Time Slot 7, Version Register */ |
203 | #define CS4215_VERSION_MASK 0xf /* Known versions 0/C, 1/D, 2/E */ |
204 | |
205 | /* Time Slot 8, Reserved */ |
206 | |
207 | /* |
208 | * Data mode |
209 | */ |
210 | /* Time Slot 1-2: Left Channel Data, 2-3: Right Channel Data */ |
211 | |
212 | /* Time Slot 5, Output Setting */ |
213 | #define CS4215_LO(v) v /* Left Output Attenuation 0x3f: -94.5 dB */ |
214 | #define CS4215_LE (1<<6) /* Line Out Enable */ |
215 | #define CS4215_HE (1<<7) /* Headphone Enable */ |
216 | |
217 | /* Time Slot 6, Output Setting */ |
218 | #define CS4215_RO(v) v /* Right Output Attenuation 0x3f: -94.5 dB */ |
219 | #define CS4215_SE (1<<6) /* Speaker Enable */ |
220 | #define CS4215_ADI (1<<7) /* A/D Data Invalid: Busy in calibration */ |
221 | |
222 | /* Time Slot 7, Input Setting */ |
223 | #define CS4215_LG(v) v /* Left Gain Setting 0xf: 22.5 dB */ |
224 | #define CS4215_IS (1<<4) /* Input Select: 1=Microphone, 0=Line */ |
225 | #define CS4215_OVR (1<<5) /* 1: Over range condition occurred */ |
226 | #define CS4215_PIO0 (1<<6) /* Parallel I/O 0 */ |
227 | #define CS4215_PIO1 (1<<7) |
228 | |
229 | /* Time Slot 8, Input Setting */ |
230 | #define CS4215_RG(v) v /* Right Gain Setting 0xf: 22.5 dB */ |
231 | #define CS4215_MA(v) (v<<4) /* Monitor Path Attenuation 0xf: mute */ |
232 | |
233 | /*************************************************************************** |
234 | DBRI specific definitions and structures |
235 | ****************************************************************************/ |
236 | |
237 | /* DBRI main registers */ |
238 | #define REG0 0x00 /* Status and Control */ |
239 | #define REG1 0x04 /* Mode and Interrupt */ |
240 | #define REG2 0x08 /* Parallel IO */ |
241 | #define REG3 0x0c /* Test */ |
242 | #define REG8 0x20 /* Command Queue Pointer */ |
243 | #define REG9 0x24 /* Interrupt Queue Pointer */ |
244 | |
245 | #define DBRI_NO_CMDS 64 |
246 | #define DBRI_INT_BLK 64 |
247 | #define DBRI_NO_DESCS 64 |
248 | #define DBRI_NO_PIPES 32 |
249 | #define DBRI_MAX_PIPE (DBRI_NO_PIPES - 1) |
250 | |
251 | #define DBRI_REC 0 |
252 | #define DBRI_PLAY 1 |
253 | #define DBRI_NO_STREAMS 2 |
254 | |
255 | /* One transmit/receive descriptor */ |
256 | /* When ba != 0 descriptor is used */ |
257 | struct dbri_mem { |
258 | volatile __u32 word1; |
259 | __u32 ba; /* Transmit/Receive Buffer Address */ |
260 | __u32 nda; /* Next Descriptor Address */ |
261 | volatile __u32 word4; |
262 | }; |
263 | |
264 | /* This structure is in a DMA region where it can accessed by both |
265 | * the CPU and the DBRI |
266 | */ |
267 | struct dbri_dma { |
268 | s32 cmd[DBRI_NO_CMDS]; /* Place for commands */ |
269 | volatile s32 intr[DBRI_INT_BLK]; /* Interrupt field */ |
270 | struct dbri_mem desc[DBRI_NO_DESCS]; /* Xmit/receive descriptors */ |
271 | }; |
272 | |
273 | #define dbri_dma_off(member, elem) \ |
274 | ((u32)(unsigned long) \ |
275 | (&(((struct dbri_dma *)0)->member[elem]))) |
276 | |
277 | enum in_or_out { PIPEinput, PIPEoutput }; |
278 | |
279 | struct dbri_pipe { |
280 | u32 sdp; /* SDP command word */ |
281 | int nextpipe; /* Next pipe in linked list */ |
282 | int length; /* Length of timeslot (bits) */ |
283 | int first_desc; /* Index of first descriptor */ |
284 | int desc; /* Index of active descriptor */ |
285 | volatile __u32 *recv_fixed_ptr; /* Ptr to receive fixed data */ |
286 | }; |
287 | |
288 | /* Per stream (playback or record) information */ |
289 | struct dbri_streaminfo { |
290 | struct snd_pcm_substream *substream; |
291 | u32 dvma_buffer; /* Device view of ALSA DMA buffer */ |
292 | int size; /* Size of DMA buffer */ |
293 | size_t offset; /* offset in user buffer */ |
294 | int pipe; /* Data pipe used */ |
295 | int left_gain; /* mixer elements */ |
296 | int right_gain; |
297 | }; |
298 | |
299 | /* This structure holds the information for both chips (DBRI & CS4215) */ |
300 | struct snd_dbri { |
301 | int regs_size, irq; /* Needed for unload */ |
302 | struct platform_device *op; /* OF device info */ |
303 | spinlock_t lock; |
304 | |
305 | struct dbri_dma *dma; /* Pointer to our DMA block */ |
306 | u32 dma_dvma; /* DBRI visible DMA address */ |
307 | |
308 | void __iomem *regs; /* dbri HW regs */ |
309 | int dbri_irqp; /* intr queue pointer */ |
310 | |
311 | struct dbri_pipe pipes[DBRI_NO_PIPES]; /* DBRI's 32 data pipes */ |
312 | int next_desc[DBRI_NO_DESCS]; /* Index of next desc, or -1 */ |
313 | spinlock_t cmdlock; /* Protects cmd queue accesses */ |
314 | s32 *cmdptr; /* Pointer to the last queued cmd */ |
315 | |
316 | int chi_bpf; |
317 | |
318 | struct cs4215 mm; /* mmcodec special info */ |
319 | /* per stream (playback/record) info */ |
320 | struct dbri_streaminfo stream_info[DBRI_NO_STREAMS]; |
321 | }; |
322 | |
323 | #define DBRI_MAX_VOLUME 63 /* Output volume */ |
324 | #define DBRI_MAX_GAIN 15 /* Input gain */ |
325 | |
326 | /* DBRI Reg0 - Status Control Register - defines. (Page 17) */ |
327 | #define D_P (1<<15) /* Program command & queue pointer valid */ |
328 | #define D_G (1<<14) /* Allow 4-Word SBus Burst */ |
329 | #define D_S (1<<13) /* Allow 16-Word SBus Burst */ |
330 | #define D_E (1<<12) /* Allow 8-Word SBus Burst */ |
331 | #define D_X (1<<7) /* Sanity Timer Disable */ |
332 | #define D_T (1<<6) /* Permit activation of the TE interface */ |
333 | #define D_N (1<<5) /* Permit activation of the NT interface */ |
334 | #define D_C (1<<4) /* Permit activation of the CHI interface */ |
335 | #define D_F (1<<3) /* Force Sanity Timer Time-Out */ |
336 | #define D_D (1<<2) /* Disable Master Mode */ |
337 | #define D_H (1<<1) /* Halt for Analysis */ |
338 | #define D_R (1<<0) /* Soft Reset */ |
339 | |
340 | /* DBRI Reg1 - Mode and Interrupt Register - defines. (Page 18) */ |
341 | #define D_LITTLE_END (1<<8) /* Byte Order */ |
342 | #define D_BIG_END (0<<8) /* Byte Order */ |
343 | #define D_MRR (1<<4) /* Multiple Error Ack on SBus (read only) */ |
344 | #define D_MLE (1<<3) /* Multiple Late Error on SBus (read only) */ |
345 | #define D_LBG (1<<2) /* Lost Bus Grant on SBus (read only) */ |
346 | #define D_MBE (1<<1) /* Burst Error on SBus (read only) */ |
347 | #define D_IR (1<<0) /* Interrupt Indicator (read only) */ |
348 | |
349 | /* DBRI Reg2 - Parallel IO Register - defines. (Page 18) */ |
350 | #define D_ENPIO3 (1<<7) /* Enable Pin 3 */ |
351 | #define D_ENPIO2 (1<<6) /* Enable Pin 2 */ |
352 | #define D_ENPIO1 (1<<5) /* Enable Pin 1 */ |
353 | #define D_ENPIO0 (1<<4) /* Enable Pin 0 */ |
354 | #define D_ENPIO (0xf0) /* Enable all the pins */ |
355 | #define D_PIO3 (1<<3) /* Pin 3: 1: Data mode, 0: Ctrl mode */ |
356 | #define D_PIO2 (1<<2) /* Pin 2: 1: Onboard PDN */ |
357 | #define D_PIO1 (1<<1) /* Pin 1: 0: Reset */ |
358 | #define D_PIO0 (1<<0) /* Pin 0: 1: Speakerbox PDN */ |
359 | |
360 | /* DBRI Commands (Page 20) */ |
361 | #define D_WAIT 0x0 /* Stop execution */ |
362 | #define D_PAUSE 0x1 /* Flush long pipes */ |
363 | #define D_JUMP 0x2 /* New command queue */ |
364 | #define D_IIQ 0x3 /* Initialize Interrupt Queue */ |
365 | #define D_REX 0x4 /* Report command execution via interrupt */ |
366 | #define D_SDP 0x5 /* Setup Data Pipe */ |
367 | #define D_CDP 0x6 /* Continue Data Pipe (reread NULL Pointer) */ |
368 | #define D_DTS 0x7 /* Define Time Slot */ |
369 | #define D_SSP 0x8 /* Set short Data Pipe */ |
370 | #define D_CHI 0x9 /* Set CHI Global Mode */ |
371 | #define D_NT 0xa /* NT Command */ |
372 | #define D_TE 0xb /* TE Command */ |
373 | #define D_CDEC 0xc /* Codec setup */ |
374 | #define D_TEST 0xd /* No comment */ |
375 | #define D_CDM 0xe /* CHI Data mode command */ |
376 | |
377 | /* Special bits for some commands */ |
378 | #define D_PIPE(v) ((v)<<0) /* Pipe No.: 0-15 long, 16-21 short */ |
379 | |
380 | /* Setup Data Pipe */ |
381 | /* IRM */ |
382 | #define D_SDP_2SAME (1<<18) /* Report 2nd time in a row value received */ |
383 | #define D_SDP_CHANGE (2<<18) /* Report any changes */ |
384 | #define D_SDP_EVERY (3<<18) /* Report any changes */ |
385 | #define D_SDP_EOL (1<<17) /* EOL interrupt enable */ |
386 | #define D_SDP_IDLE (1<<16) /* HDLC idle interrupt enable */ |
387 | |
388 | /* Pipe data MODE */ |
389 | #define D_SDP_MEM (0<<13) /* To/from memory */ |
390 | #define D_SDP_HDLC (2<<13) |
391 | #define D_SDP_HDLC_D (3<<13) /* D Channel (prio control) */ |
392 | #define D_SDP_SER (4<<13) /* Serial to serial */ |
393 | #define D_SDP_FIXED (6<<13) /* Short only */ |
394 | #define D_SDP_MODE(v) ((v)&(7<<13)) |
395 | |
396 | #define D_SDP_TO_SER (1<<12) /* Direction */ |
397 | #define D_SDP_FROM_SER (0<<12) /* Direction */ |
398 | #define D_SDP_MSB (1<<11) /* Bit order within Byte */ |
399 | #define D_SDP_LSB (0<<11) /* Bit order within Byte */ |
400 | #define D_SDP_P (1<<10) /* Pointer Valid */ |
401 | #define D_SDP_A (1<<8) /* Abort */ |
402 | #define D_SDP_C (1<<7) /* Clear */ |
403 | |
404 | /* Define Time Slot */ |
405 | #define D_DTS_VI (1<<17) /* Valid Input Time-Slot Descriptor */ |
406 | #define D_DTS_VO (1<<16) /* Valid Output Time-Slot Descriptor */ |
407 | #define D_DTS_INS (1<<15) /* Insert Time Slot */ |
408 | #define D_DTS_DEL (0<<15) /* Delete Time Slot */ |
409 | #define D_DTS_PRVIN(v) ((v)<<10) /* Previous In Pipe */ |
410 | #define D_DTS_PRVOUT(v) ((v)<<5) /* Previous Out Pipe */ |
411 | |
412 | /* Time Slot defines */ |
413 | #define D_TS_LEN(v) ((v)<<24) /* Number of bits in this time slot */ |
414 | #define D_TS_CYCLE(v) ((v)<<14) /* Bit Count at start of TS */ |
415 | #define D_TS_DI (1<<13) /* Data Invert */ |
416 | #define D_TS_1CHANNEL (0<<10) /* Single Channel / Normal mode */ |
417 | #define D_TS_MONITOR (2<<10) /* Monitor pipe */ |
418 | #define D_TS_NONCONTIG (3<<10) /* Non contiguous mode */ |
419 | #define D_TS_ANCHOR (7<<10) /* Starting short pipes */ |
420 | #define D_TS_MON(v) ((v)<<5) /* Monitor Pipe */ |
421 | #define D_TS_NEXT(v) ((v)<<0) /* Pipe no.: 0-15 long, 16-21 short */ |
422 | |
423 | /* Concentration Highway Interface Modes */ |
424 | #define D_CHI_CHICM(v) ((v)<<16) /* Clock mode */ |
425 | #define D_CHI_IR (1<<15) /* Immediate Interrupt Report */ |
426 | #define D_CHI_EN (1<<14) /* CHIL Interrupt enabled */ |
427 | #define D_CHI_OD (1<<13) /* Open Drain Enable */ |
428 | #define D_CHI_FE (1<<12) /* Sample CHIFS on Rising Frame Edge */ |
429 | #define D_CHI_FD (1<<11) /* Frame Drive */ |
430 | #define D_CHI_BPF(v) ((v)<<0) /* Bits per Frame */ |
431 | |
432 | /* NT: These are here for completeness */ |
433 | #define D_NT_FBIT (1<<17) /* Frame Bit */ |
434 | #define D_NT_NBF (1<<16) /* Number of bad frames to loose framing */ |
435 | #define D_NT_IRM_IMM (1<<15) /* Interrupt Report & Mask: Immediate */ |
436 | #define D_NT_IRM_EN (1<<14) /* Interrupt Report & Mask: Enable */ |
437 | #define D_NT_ISNT (1<<13) /* Configure interface as NT */ |
438 | #define D_NT_FT (1<<12) /* Fixed Timing */ |
439 | #define D_NT_EZ (1<<11) /* Echo Channel is Zeros */ |
440 | #define D_NT_IFA (1<<10) /* Inhibit Final Activation */ |
441 | #define D_NT_ACT (1<<9) /* Activate Interface */ |
442 | #define D_NT_MFE (1<<8) /* Multiframe Enable */ |
443 | #define D_NT_RLB(v) ((v)<<5) /* Remote Loopback */ |
444 | #define D_NT_LLB(v) ((v)<<2) /* Local Loopback */ |
445 | #define D_NT_FACT (1<<1) /* Force Activation */ |
446 | #define D_NT_ABV (1<<0) /* Activate Bipolar Violation */ |
447 | |
448 | /* Codec Setup */ |
449 | #define D_CDEC_CK(v) ((v)<<24) /* Clock Select */ |
450 | #define D_CDEC_FED(v) ((v)<<12) /* FSCOD Falling Edge Delay */ |
451 | #define D_CDEC_RED(v) ((v)<<0) /* FSCOD Rising Edge Delay */ |
452 | |
453 | /* Test */ |
454 | #define D_TEST_RAM(v) ((v)<<16) /* RAM Pointer */ |
455 | #define D_TEST_SIZE(v) ((v)<<11) /* */ |
456 | #define D_TEST_ROMONOFF 0x5 /* Toggle ROM opcode monitor on/off */ |
457 | #define D_TEST_PROC 0x6 /* Microprocessor test */ |
458 | #define D_TEST_SER 0x7 /* Serial-Controller test */ |
459 | #define D_TEST_RAMREAD 0x8 /* Copy from Ram to system memory */ |
460 | #define D_TEST_RAMWRITE 0x9 /* Copy into Ram from system memory */ |
461 | #define D_TEST_RAMBIST 0xa /* RAM Built-In Self Test */ |
462 | #define D_TEST_MCBIST 0xb /* Microcontroller Built-In Self Test */ |
463 | #define D_TEST_DUMP 0xe /* ROM Dump */ |
464 | |
465 | /* CHI Data Mode */ |
466 | #define D_CDM_THI (1 << 8) /* Transmit Data on CHIDR Pin */ |
467 | #define D_CDM_RHI (1 << 7) /* Receive Data on CHIDX Pin */ |
468 | #define D_CDM_RCE (1 << 6) /* Receive on Rising Edge of CHICK */ |
469 | #define D_CDM_XCE (1 << 2) /* Transmit Data on Rising Edge of CHICK */ |
470 | #define D_CDM_XEN (1 << 1) /* Transmit Highway Enable */ |
471 | #define D_CDM_REN (1 << 0) /* Receive Highway Enable */ |
472 | |
473 | /* The Interrupts */ |
474 | #define D_INTR_BRDY 1 /* Buffer Ready for processing */ |
475 | #define D_INTR_MINT 2 /* Marked Interrupt in RD/TD */ |
476 | #define D_INTR_IBEG 3 /* Flag to idle transition detected (HDLC) */ |
477 | #define D_INTR_IEND 4 /* Idle to flag transition detected (HDLC) */ |
478 | #define D_INTR_EOL 5 /* End of List */ |
479 | #define D_INTR_CMDI 6 /* Command has bean read */ |
480 | #define D_INTR_XCMP 8 /* Transmission of frame complete */ |
481 | #define D_INTR_SBRI 9 /* BRI status change info */ |
482 | #define D_INTR_FXDT 10 /* Fixed data change */ |
483 | #define D_INTR_CHIL 11 /* CHI lost frame sync (channel 36 only) */ |
484 | #define D_INTR_COLL 11 /* Unrecoverable D-Channel collision */ |
485 | #define D_INTR_DBYT 12 /* Dropped by frame slip */ |
486 | #define D_INTR_RBYT 13 /* Repeated by frame slip */ |
487 | #define D_INTR_LINT 14 /* Lost Interrupt */ |
488 | #define D_INTR_UNDR 15 /* DMA underrun */ |
489 | |
490 | #define D_INTR_TE 32 |
491 | #define D_INTR_NT 34 |
492 | #define D_INTR_CHI 36 |
493 | #define D_INTR_CMD 38 |
494 | |
495 | #define D_INTR_GETCHAN(v) (((v) >> 24) & 0x3f) |
496 | #define D_INTR_GETCODE(v) (((v) >> 20) & 0xf) |
497 | #define D_INTR_GETCMD(v) (((v) >> 16) & 0xf) |
498 | #define D_INTR_GETVAL(v) ((v) & 0xffff) |
499 | #define D_INTR_GETRVAL(v) ((v) & 0xfffff) |
500 | |
501 | #define D_P_0 0 /* TE receive anchor */ |
502 | #define D_P_1 1 /* TE transmit anchor */ |
503 | #define D_P_2 2 /* NT transmit anchor */ |
504 | #define D_P_3 3 /* NT receive anchor */ |
505 | #define D_P_4 4 /* CHI send data */ |
506 | #define D_P_5 5 /* CHI receive data */ |
507 | #define D_P_6 6 /* */ |
508 | #define D_P_7 7 /* */ |
509 | #define D_P_8 8 /* */ |
510 | #define D_P_9 9 /* */ |
511 | #define D_P_10 10 /* */ |
512 | #define D_P_11 11 /* */ |
513 | #define D_P_12 12 /* */ |
514 | #define D_P_13 13 /* */ |
515 | #define D_P_14 14 /* */ |
516 | #define D_P_15 15 /* */ |
517 | #define D_P_16 16 /* CHI anchor pipe */ |
518 | #define D_P_17 17 /* CHI send */ |
519 | #define D_P_18 18 /* CHI receive */ |
520 | #define D_P_19 19 /* CHI receive */ |
521 | #define D_P_20 20 /* CHI receive */ |
522 | #define D_P_21 21 /* */ |
523 | #define D_P_22 22 /* */ |
524 | #define D_P_23 23 /* */ |
525 | #define D_P_24 24 /* */ |
526 | #define D_P_25 25 /* */ |
527 | #define D_P_26 26 /* */ |
528 | #define D_P_27 27 /* */ |
529 | #define D_P_28 28 /* */ |
530 | #define D_P_29 29 /* */ |
531 | #define D_P_30 30 /* */ |
532 | #define D_P_31 31 /* */ |
533 | |
534 | /* Transmit descriptor defines */ |
535 | #define DBRI_TD_F (1 << 31) /* End of Frame */ |
536 | #define DBRI_TD_D (1 << 30) /* Do not append CRC */ |
537 | #define DBRI_TD_CNT(v) ((v) << 16) /* Number of valid bytes in the buffer */ |
538 | #define DBRI_TD_B (1 << 15) /* Final interrupt */ |
539 | #define DBRI_TD_M (1 << 14) /* Marker interrupt */ |
540 | #define DBRI_TD_I (1 << 13) /* Transmit Idle Characters */ |
541 | #define DBRI_TD_FCNT(v) (v) /* Flag Count */ |
542 | #define DBRI_TD_UNR (1 << 3) /* Underrun: transmitter is out of data */ |
543 | #define DBRI_TD_ABT (1 << 2) /* Abort: frame aborted */ |
544 | #define DBRI_TD_TBC (1 << 0) /* Transmit buffer Complete */ |
545 | #define DBRI_TD_STATUS(v) ((v) & 0xff) /* Transmit status */ |
546 | /* Maximum buffer size per TD: almost 8KB */ |
547 | #define DBRI_TD_MAXCNT ((1 << 13) - 4) |
548 | |
549 | /* Receive descriptor defines */ |
550 | #define DBRI_RD_F (1 << 31) /* End of Frame */ |
551 | #define DBRI_RD_C (1 << 30) /* Completed buffer */ |
552 | #define DBRI_RD_B (1 << 15) /* Final interrupt */ |
553 | #define DBRI_RD_M (1 << 14) /* Marker interrupt */ |
554 | #define DBRI_RD_BCNT(v) (v) /* Buffer size */ |
555 | #define DBRI_RD_CRC (1 << 7) /* 0: CRC is correct */ |
556 | #define DBRI_RD_BBC (1 << 6) /* 1: Bad Byte received */ |
557 | #define DBRI_RD_ABT (1 << 5) /* Abort: frame aborted */ |
558 | #define DBRI_RD_OVRN (1 << 3) /* Overrun: data lost */ |
559 | #define DBRI_RD_STATUS(v) ((v) & 0xff) /* Receive status */ |
560 | #define DBRI_RD_CNT(v) (((v) >> 16) & 0x1fff) /* Valid bytes in the buffer */ |
561 | |
562 | /* stream_info[] access */ |
563 | /* Translate the ALSA direction into the array index */ |
564 | #define DBRI_STREAMNO(substream) \ |
565 | (substream->stream == \ |
566 | SNDRV_PCM_STREAM_PLAYBACK ? DBRI_PLAY: DBRI_REC) |
567 | |
568 | /* Return a pointer to dbri_streaminfo */ |
569 | #define DBRI_STREAM(dbri, substream) \ |
570 | &dbri->stream_info[DBRI_STREAMNO(substream)] |
571 | |
572 | /* |
573 | * Short data pipes transmit LSB first. The CS4215 receives MSB first. Grrr. |
574 | * So we have to reverse the bits. Note: not all bit lengths are supported |
575 | */ |
576 | static __u32 reverse_bytes(__u32 b, int len) |
577 | { |
578 | switch (len) { |
579 | case 32: |
580 | b = ((b & 0xffff0000) >> 16) | ((b & 0x0000ffff) << 16); |
581 | case 16: |
582 | b = ((b & 0xff00ff00) >> 8) | ((b & 0x00ff00ff) << 8); |
583 | case 8: |
584 | b = ((b & 0xf0f0f0f0) >> 4) | ((b & 0x0f0f0f0f) << 4); |
585 | case 4: |
586 | b = ((b & 0xcccccccc) >> 2) | ((b & 0x33333333) << 2); |
587 | case 2: |
588 | b = ((b & 0xaaaaaaaa) >> 1) | ((b & 0x55555555) << 1); |
589 | case 1: |
590 | case 0: |
591 | break; |
592 | default: |
593 | printk(KERN_ERR "DBRI reverse_bytes: unsupported length\n"); |
594 | }; |
595 | |
596 | return b; |
597 | } |
598 | |
599 | /* |
600 | **************************************************************************** |
601 | ************** DBRI initialization and command synchronization ************* |
602 | **************************************************************************** |
603 | |
604 | Commands are sent to the DBRI by building a list of them in memory, |
605 | then writing the address of the first list item to DBRI register 8. |
606 | The list is terminated with a WAIT command, which generates a |
607 | CPU interrupt to signal completion. |
608 | |
609 | Since the DBRI can run in parallel with the CPU, several means of |
610 | synchronization present themselves. The method implemented here uses |
611 | the dbri_cmdwait() to wait for execution of batch of sent commands. |
612 | |
613 | A circular command buffer is used here. A new command is being added |
614 | while another can be executed. The scheme works by adding two WAIT commands |
615 | after each sent batch of commands. When the next batch is prepared it is |
616 | added after the WAIT commands then the WAITs are replaced with single JUMP |
617 | command to the new batch. The the DBRI is forced to reread the last WAIT |
618 | command (replaced by the JUMP by then). If the DBRI is still executing |
619 | previous commands the request to reread the WAIT command is ignored. |
620 | |
621 | Every time a routine wants to write commands to the DBRI, it must |
622 | first call dbri_cmdlock() and get pointer to a free space in |
623 | dbri->dma->cmd buffer. After this, the commands can be written to |
624 | the buffer, and dbri_cmdsend() is called with the final pointer value |
625 | to send them to the DBRI. |
626 | |
627 | */ |
628 | |
629 | #define MAXLOOPS 20 |
630 | /* |
631 | * Wait for the current command string to execute |
632 | */ |
633 | static void dbri_cmdwait(struct snd_dbri *dbri) |
634 | { |
635 | int maxloops = MAXLOOPS; |
636 | unsigned long flags; |
637 | |
638 | /* Delay if previous commands are still being processed */ |
639 | spin_lock_irqsave(&dbri->lock, flags); |
640 | while ((--maxloops) > 0 && (sbus_readl(dbri->regs + REG0) & D_P)) { |
641 | spin_unlock_irqrestore(&dbri->lock, flags); |
642 | msleep_interruptible(1); |
643 | spin_lock_irqsave(&dbri->lock, flags); |
644 | } |
645 | spin_unlock_irqrestore(&dbri->lock, flags); |
646 | |
647 | if (maxloops == 0) |
648 | printk(KERN_ERR "DBRI: Chip never completed command buffer\n"); |
649 | else |
650 | dprintk(D_CMD, "Chip completed command buffer (%d)\n", |
651 | MAXLOOPS - maxloops - 1); |
652 | } |
653 | /* |
654 | * Lock the command queue and return pointer to space for len cmd words |
655 | * It locks the cmdlock spinlock. |
656 | */ |
657 | static s32 *dbri_cmdlock(struct snd_dbri *dbri, int len) |
658 | { |
659 | /* Space for 2 WAIT cmds (replaced later by 1 JUMP cmd) */ |
660 | len += 2; |
661 | spin_lock(&dbri->cmdlock); |
662 | if (dbri->cmdptr - dbri->dma->cmd + len < DBRI_NO_CMDS - 2) |
663 | return dbri->cmdptr + 2; |
664 | else if (len < sbus_readl(dbri->regs + REG8) - dbri->dma_dvma) |
665 | return dbri->dma->cmd; |
666 | else |
667 | printk(KERN_ERR "DBRI: no space for commands."); |
668 | |
669 | return NULL; |
670 | } |
671 | |
672 | /* |
673 | * Send prepared cmd string. It works by writing a JUMP cmd into |
674 | * the last WAIT cmd and force DBRI to reread the cmd. |
675 | * The JUMP cmd points to the new cmd string. |
676 | * It also releases the cmdlock spinlock. |
677 | * |
678 | * Lock must be held before calling this. |
679 | */ |
680 | static void dbri_cmdsend(struct snd_dbri *dbri, s32 *cmd, int len) |
681 | { |
682 | s32 tmp, addr; |
683 | static int wait_id = 0; |
684 | |
685 | wait_id++; |
686 | wait_id &= 0xffff; /* restrict it to a 16 bit counter. */ |
687 | *(cmd) = DBRI_CMD(D_WAIT, 1, wait_id); |
688 | *(cmd+1) = DBRI_CMD(D_WAIT, 1, wait_id); |
689 | |
690 | /* Replace the last command with JUMP */ |
691 | addr = dbri->dma_dvma + (cmd - len - dbri->dma->cmd) * sizeof(s32); |
692 | *(dbri->cmdptr+1) = addr; |
693 | *(dbri->cmdptr) = DBRI_CMD(D_JUMP, 0, 0); |
694 | |
695 | #ifdef DBRI_DEBUG |
696 | if (cmd > dbri->cmdptr) { |
697 | s32 *ptr; |
698 | |
699 | for (ptr = dbri->cmdptr; ptr < cmd+2; ptr++) |
700 | dprintk(D_CMD, "cmd: %lx:%08x\n", |
701 | (unsigned long)ptr, *ptr); |
702 | } else { |
703 | s32 *ptr = dbri->cmdptr; |
704 | |
705 | dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); |
706 | ptr++; |
707 | dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); |
708 | for (ptr = dbri->dma->cmd; ptr < cmd+2; ptr++) |
709 | dprintk(D_CMD, "cmd: %lx:%08x\n", |
710 | (unsigned long)ptr, *ptr); |
711 | } |
712 | #endif |
713 | |
714 | /* Reread the last command */ |
715 | tmp = sbus_readl(dbri->regs + REG0); |
716 | tmp |= D_P; |
717 | sbus_writel(tmp, dbri->regs + REG0); |
718 | |
719 | dbri->cmdptr = cmd; |
720 | spin_unlock(&dbri->cmdlock); |
721 | } |
722 | |
723 | /* Lock must be held when calling this */ |
724 | static void dbri_reset(struct snd_dbri *dbri) |
725 | { |
726 | int i; |
727 | u32 tmp; |
728 | |
729 | dprintk(D_GEN, "reset 0:%x 2:%x 8:%x 9:%x\n", |
730 | sbus_readl(dbri->regs + REG0), |
731 | sbus_readl(dbri->regs + REG2), |
732 | sbus_readl(dbri->regs + REG8), sbus_readl(dbri->regs + REG9)); |
733 | |
734 | sbus_writel(D_R, dbri->regs + REG0); /* Soft Reset */ |
735 | for (i = 0; (sbus_readl(dbri->regs + REG0) & D_R) && i < 64; i++) |
736 | udelay(10); |
737 | |
738 | /* A brute approach - DBRI falls back to working burst size by itself |
739 | * On SS20 D_S does not work, so do not try so high. */ |
740 | tmp = sbus_readl(dbri->regs + REG0); |
741 | tmp |= D_G | D_E; |
742 | tmp &= ~D_S; |
743 | sbus_writel(tmp, dbri->regs + REG0); |
744 | } |
745 | |
746 | /* Lock must not be held before calling this */ |
747 | static void __devinit dbri_initialize(struct snd_dbri *dbri) |
748 | { |
749 | s32 *cmd; |
750 | u32 dma_addr; |
751 | unsigned long flags; |
752 | int n; |
753 | |
754 | spin_lock_irqsave(&dbri->lock, flags); |
755 | |
756 | dbri_reset(dbri); |
757 | |
758 | /* Initialize pipes */ |
759 | for (n = 0; n < DBRI_NO_PIPES; n++) |
760 | dbri->pipes[n].desc = dbri->pipes[n].first_desc = -1; |
761 | |
762 | spin_lock_init(&dbri->cmdlock); |
763 | /* |
764 | * Initialize the interrupt ring buffer. |
765 | */ |
766 | dma_addr = dbri->dma_dvma + dbri_dma_off(intr, 0); |
767 | dbri->dma->intr[0] = dma_addr; |
768 | dbri->dbri_irqp = 1; |
769 | /* |
770 | * Set up the interrupt queue |
771 | */ |
772 | spin_lock(&dbri->cmdlock); |
773 | cmd = dbri->cmdptr = dbri->dma->cmd; |
774 | *(cmd++) = DBRI_CMD(D_IIQ, 0, 0); |
775 | *(cmd++) = dma_addr; |
776 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
777 | dbri->cmdptr = cmd; |
778 | *(cmd++) = DBRI_CMD(D_WAIT, 1, 0); |
779 | *(cmd++) = DBRI_CMD(D_WAIT, 1, 0); |
780 | dma_addr = dbri->dma_dvma + dbri_dma_off(cmd, 0); |
781 | sbus_writel(dma_addr, dbri->regs + REG8); |
782 | spin_unlock(&dbri->cmdlock); |
783 | |
784 | spin_unlock_irqrestore(&dbri->lock, flags); |
785 | dbri_cmdwait(dbri); |
786 | } |
787 | |
788 | /* |
789 | **************************************************************************** |
790 | ************************** DBRI data pipe management *********************** |
791 | **************************************************************************** |
792 | |
793 | While DBRI control functions use the command and interrupt buffers, the |
794 | main data path takes the form of data pipes, which can be short (command |
795 | and interrupt driven), or long (attached to DMA buffers). These functions |
796 | provide a rudimentary means of setting up and managing the DBRI's pipes, |
797 | but the calling functions have to make sure they respect the pipes' linked |
798 | list ordering, among other things. The transmit and receive functions |
799 | here interface closely with the transmit and receive interrupt code. |
800 | |
801 | */ |
802 | static inline int pipe_active(struct snd_dbri *dbri, int pipe) |
803 | { |
804 | return ((pipe >= 0) && (dbri->pipes[pipe].desc != -1)); |
805 | } |
806 | |
807 | /* reset_pipe(dbri, pipe) |
808 | * |
809 | * Called on an in-use pipe to clear anything being transmitted or received |
810 | * Lock must be held before calling this. |
811 | */ |
812 | static void reset_pipe(struct snd_dbri *dbri, int pipe) |
813 | { |
814 | int sdp; |
815 | int desc; |
816 | s32 *cmd; |
817 | |
818 | if (pipe < 0 || pipe > DBRI_MAX_PIPE) { |
819 | printk(KERN_ERR "DBRI: reset_pipe called with " |
820 | "illegal pipe number\n"); |
821 | return; |
822 | } |
823 | |
824 | sdp = dbri->pipes[pipe].sdp; |
825 | if (sdp == 0) { |
826 | printk(KERN_ERR "DBRI: reset_pipe called " |
827 | "on uninitialized pipe\n"); |
828 | return; |
829 | } |
830 | |
831 | cmd = dbri_cmdlock(dbri, 3); |
832 | *(cmd++) = DBRI_CMD(D_SDP, 0, sdp | D_SDP_C | D_SDP_P); |
833 | *(cmd++) = 0; |
834 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
835 | dbri_cmdsend(dbri, cmd, 3); |
836 | |
837 | desc = dbri->pipes[pipe].first_desc; |
838 | if (desc >= 0) |
839 | do { |
840 | dbri->dma->desc[desc].ba = 0; |
841 | dbri->dma->desc[desc].nda = 0; |
842 | desc = dbri->next_desc[desc]; |
843 | } while (desc != -1 && desc != dbri->pipes[pipe].first_desc); |
844 | |
845 | dbri->pipes[pipe].desc = -1; |
846 | dbri->pipes[pipe].first_desc = -1; |
847 | } |
848 | |
849 | /* |
850 | * Lock must be held before calling this. |
851 | */ |
852 | static void setup_pipe(struct snd_dbri *dbri, int pipe, int sdp) |
853 | { |
854 | if (pipe < 0 || pipe > DBRI_MAX_PIPE) { |
855 | printk(KERN_ERR "DBRI: setup_pipe called " |
856 | "with illegal pipe number\n"); |
857 | return; |
858 | } |
859 | |
860 | if ((sdp & 0xf800) != sdp) { |
861 | printk(KERN_ERR "DBRI: setup_pipe called " |
862 | "with strange SDP value\n"); |
863 | /* sdp &= 0xf800; */ |
864 | } |
865 | |
866 | /* If this is a fixed receive pipe, arrange for an interrupt |
867 | * every time its data changes |
868 | */ |
869 | if (D_SDP_MODE(sdp) == D_SDP_FIXED && !(sdp & D_SDP_TO_SER)) |
870 | sdp |= D_SDP_CHANGE; |
871 | |
872 | sdp |= D_PIPE(pipe); |
873 | dbri->pipes[pipe].sdp = sdp; |
874 | dbri->pipes[pipe].desc = -1; |
875 | dbri->pipes[pipe].first_desc = -1; |
876 | |
877 | reset_pipe(dbri, pipe); |
878 | } |
879 | |
880 | /* |
881 | * Lock must be held before calling this. |
882 | */ |
883 | static void link_time_slot(struct snd_dbri *dbri, int pipe, |
884 | int prevpipe, int nextpipe, |
885 | int length, int cycle) |
886 | { |
887 | s32 *cmd; |
888 | int val; |
889 | |
890 | if (pipe < 0 || pipe > DBRI_MAX_PIPE |
891 | || prevpipe < 0 || prevpipe > DBRI_MAX_PIPE |
892 | || nextpipe < 0 || nextpipe > DBRI_MAX_PIPE) { |
893 | printk(KERN_ERR |
894 | "DBRI: link_time_slot called with illegal pipe number\n"); |
895 | return; |
896 | } |
897 | |
898 | if (dbri->pipes[pipe].sdp == 0 |
899 | || dbri->pipes[prevpipe].sdp == 0 |
900 | || dbri->pipes[nextpipe].sdp == 0) { |
901 | printk(KERN_ERR "DBRI: link_time_slot called " |
902 | "on uninitialized pipe\n"); |
903 | return; |
904 | } |
905 | |
906 | dbri->pipes[prevpipe].nextpipe = pipe; |
907 | dbri->pipes[pipe].nextpipe = nextpipe; |
908 | dbri->pipes[pipe].length = length; |
909 | |
910 | cmd = dbri_cmdlock(dbri, 4); |
911 | |
912 | if (dbri->pipes[pipe].sdp & D_SDP_TO_SER) { |
913 | /* Deal with CHI special case: |
914 | * "If transmission on edges 0 or 1 is desired, then cycle n |
915 | * (where n = # of bit times per frame...) must be used." |
916 | * - DBRI data sheet, page 11 |
917 | */ |
918 | if (prevpipe == 16 && cycle == 0) |
919 | cycle = dbri->chi_bpf; |
920 | |
921 | val = D_DTS_VO | D_DTS_INS | D_DTS_PRVOUT(prevpipe) | pipe; |
922 | *(cmd++) = DBRI_CMD(D_DTS, 0, val); |
923 | *(cmd++) = 0; |
924 | *(cmd++) = |
925 | D_TS_LEN(length) | D_TS_CYCLE(cycle) | D_TS_NEXT(nextpipe); |
926 | } else { |
927 | val = D_DTS_VI | D_DTS_INS | D_DTS_PRVIN(prevpipe) | pipe; |
928 | *(cmd++) = DBRI_CMD(D_DTS, 0, val); |
929 | *(cmd++) = |
930 | D_TS_LEN(length) | D_TS_CYCLE(cycle) | D_TS_NEXT(nextpipe); |
931 | *(cmd++) = 0; |
932 | } |
933 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
934 | |
935 | dbri_cmdsend(dbri, cmd, 4); |
936 | } |
937 | |
938 | #if 0 |
939 | /* |
940 | * Lock must be held before calling this. |
941 | */ |
942 | static void unlink_time_slot(struct snd_dbri *dbri, int pipe, |
943 | enum in_or_out direction, int prevpipe, |
944 | int nextpipe) |
945 | { |
946 | s32 *cmd; |
947 | int val; |
948 | |
949 | if (pipe < 0 || pipe > DBRI_MAX_PIPE |
950 | || prevpipe < 0 || prevpipe > DBRI_MAX_PIPE |
951 | || nextpipe < 0 || nextpipe > DBRI_MAX_PIPE) { |
952 | printk(KERN_ERR |
953 | "DBRI: unlink_time_slot called with illegal pipe number\n"); |
954 | return; |
955 | } |
956 | |
957 | cmd = dbri_cmdlock(dbri, 4); |
958 | |
959 | if (direction == PIPEinput) { |
960 | val = D_DTS_VI | D_DTS_DEL | D_DTS_PRVIN(prevpipe) | pipe; |
961 | *(cmd++) = DBRI_CMD(D_DTS, 0, val); |
962 | *(cmd++) = D_TS_NEXT(nextpipe); |
963 | *(cmd++) = 0; |
964 | } else { |
965 | val = D_DTS_VO | D_DTS_DEL | D_DTS_PRVOUT(prevpipe) | pipe; |
966 | *(cmd++) = DBRI_CMD(D_DTS, 0, val); |
967 | *(cmd++) = 0; |
968 | *(cmd++) = D_TS_NEXT(nextpipe); |
969 | } |
970 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
971 | |
972 | dbri_cmdsend(dbri, cmd, 4); |
973 | } |
974 | #endif |
975 | |
976 | /* xmit_fixed() / recv_fixed() |
977 | * |
978 | * Transmit/receive data on a "fixed" pipe - i.e, one whose contents are not |
979 | * expected to change much, and which we don't need to buffer. |
980 | * The DBRI only interrupts us when the data changes (receive pipes), |
981 | * or only changes the data when this function is called (transmit pipes). |
982 | * Only short pipes (numbers 16-31) can be used in fixed data mode. |
983 | * |
984 | * These function operate on a 32-bit field, no matter how large |
985 | * the actual time slot is. The interrupt handler takes care of bit |
986 | * ordering and alignment. An 8-bit time slot will always end up |
987 | * in the low-order 8 bits, filled either MSB-first or LSB-first, |
988 | * depending on the settings passed to setup_pipe(). |
989 | * |
990 | * Lock must not be held before calling it. |
991 | */ |
992 | static void xmit_fixed(struct snd_dbri *dbri, int pipe, unsigned int data) |
993 | { |
994 | s32 *cmd; |
995 | unsigned long flags; |
996 | |
997 | if (pipe < 16 || pipe > DBRI_MAX_PIPE) { |
998 | printk(KERN_ERR "DBRI: xmit_fixed: Illegal pipe number\n"); |
999 | return; |
1000 | } |
1001 | |
1002 | if (D_SDP_MODE(dbri->pipes[pipe].sdp) == 0) { |
1003 | printk(KERN_ERR "DBRI: xmit_fixed: " |
1004 | "Uninitialized pipe %d\n", pipe); |
1005 | return; |
1006 | } |
1007 | |
1008 | if (D_SDP_MODE(dbri->pipes[pipe].sdp) != D_SDP_FIXED) { |
1009 | printk(KERN_ERR "DBRI: xmit_fixed: Non-fixed pipe %d\n", pipe); |
1010 | return; |
1011 | } |
1012 | |
1013 | if (!(dbri->pipes[pipe].sdp & D_SDP_TO_SER)) { |
1014 | printk(KERN_ERR "DBRI: xmit_fixed: Called on receive pipe %d\n", |
1015 | pipe); |
1016 | return; |
1017 | } |
1018 | |
1019 | /* DBRI short pipes always transmit LSB first */ |
1020 | |
1021 | if (dbri->pipes[pipe].sdp & D_SDP_MSB) |
1022 | data = reverse_bytes(data, dbri->pipes[pipe].length); |
1023 | |
1024 | cmd = dbri_cmdlock(dbri, 3); |
1025 | |
1026 | *(cmd++) = DBRI_CMD(D_SSP, 0, pipe); |
1027 | *(cmd++) = data; |
1028 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
1029 | |
1030 | spin_lock_irqsave(&dbri->lock, flags); |
1031 | dbri_cmdsend(dbri, cmd, 3); |
1032 | spin_unlock_irqrestore(&dbri->lock, flags); |
1033 | dbri_cmdwait(dbri); |
1034 | |
1035 | } |
1036 | |
1037 | static void recv_fixed(struct snd_dbri *dbri, int pipe, volatile __u32 *ptr) |
1038 | { |
1039 | if (pipe < 16 || pipe > DBRI_MAX_PIPE) { |
1040 | printk(KERN_ERR "DBRI: recv_fixed called with " |
1041 | "illegal pipe number\n"); |
1042 | return; |
1043 | } |
1044 | |
1045 | if (D_SDP_MODE(dbri->pipes[pipe].sdp) != D_SDP_FIXED) { |
1046 | printk(KERN_ERR "DBRI: recv_fixed called on " |
1047 | "non-fixed pipe %d\n", pipe); |
1048 | return; |
1049 | } |
1050 | |
1051 | if (dbri->pipes[pipe].sdp & D_SDP_TO_SER) { |
1052 | printk(KERN_ERR "DBRI: recv_fixed called on " |
1053 | "transmit pipe %d\n", pipe); |
1054 | return; |
1055 | } |
1056 | |
1057 | dbri->pipes[pipe].recv_fixed_ptr = ptr; |
1058 | } |
1059 | |
1060 | /* setup_descs() |
1061 | * |
1062 | * Setup transmit/receive data on a "long" pipe - i.e, one associated |
1063 | * with a DMA buffer. |
1064 | * |
1065 | * Only pipe numbers 0-15 can be used in this mode. |
1066 | * |
1067 | * This function takes a stream number pointing to a data buffer, |
1068 | * and work by building chains of descriptors which identify the |
1069 | * data buffers. Buffers too large for a single descriptor will |
1070 | * be spread across multiple descriptors. |
1071 | * |
1072 | * All descriptors create a ring buffer. |
1073 | * |
1074 | * Lock must be held before calling this. |
1075 | */ |
1076 | static int setup_descs(struct snd_dbri *dbri, int streamno, unsigned int period) |
1077 | { |
1078 | struct dbri_streaminfo *info = &dbri->stream_info[streamno]; |
1079 | __u32 dvma_buffer; |
1080 | int desc; |
1081 | int len; |
1082 | int first_desc = -1; |
1083 | int last_desc = -1; |
1084 | |
1085 | if (info->pipe < 0 || info->pipe > 15) { |
1086 | printk(KERN_ERR "DBRI: setup_descs: Illegal pipe number\n"); |
1087 | return -2; |
1088 | } |
1089 | |
1090 | if (dbri->pipes[info->pipe].sdp == 0) { |
1091 | printk(KERN_ERR "DBRI: setup_descs: Uninitialized pipe %d\n", |
1092 | info->pipe); |
1093 | return -2; |
1094 | } |
1095 | |
1096 | dvma_buffer = info->dvma_buffer; |
1097 | len = info->size; |
1098 | |
1099 | if (streamno == DBRI_PLAY) { |
1100 | if (!(dbri->pipes[info->pipe].sdp & D_SDP_TO_SER)) { |
1101 | printk(KERN_ERR "DBRI: setup_descs: " |
1102 | "Called on receive pipe %d\n", info->pipe); |
1103 | return -2; |
1104 | } |
1105 | } else { |
1106 | if (dbri->pipes[info->pipe].sdp & D_SDP_TO_SER) { |
1107 | printk(KERN_ERR |
1108 | "DBRI: setup_descs: Called on transmit pipe %d\n", |
1109 | info->pipe); |
1110 | return -2; |
1111 | } |
1112 | /* Should be able to queue multiple buffers |
1113 | * to receive on a pipe |
1114 | */ |
1115 | if (pipe_active(dbri, info->pipe)) { |
1116 | printk(KERN_ERR "DBRI: recv_on_pipe: " |
1117 | "Called on active pipe %d\n", info->pipe); |
1118 | return -2; |
1119 | } |
1120 | |
1121 | /* Make sure buffer size is multiple of four */ |
1122 | len &= ~3; |
1123 | } |
1124 | |
1125 | /* Free descriptors if pipe has any */ |
1126 | desc = dbri->pipes[info->pipe].first_desc; |
1127 | if (desc >= 0) |
1128 | do { |
1129 | dbri->dma->desc[desc].ba = 0; |
1130 | dbri->dma->desc[desc].nda = 0; |
1131 | desc = dbri->next_desc[desc]; |
1132 | } while (desc != -1 && |
1133 | desc != dbri->pipes[info->pipe].first_desc); |
1134 | |
1135 | dbri->pipes[info->pipe].desc = -1; |
1136 | dbri->pipes[info->pipe].first_desc = -1; |
1137 | |
1138 | desc = 0; |
1139 | while (len > 0) { |
1140 | int mylen; |
1141 | |
1142 | for (; desc < DBRI_NO_DESCS; desc++) { |
1143 | if (!dbri->dma->desc[desc].ba) |
1144 | break; |
1145 | } |
1146 | |
1147 | if (desc == DBRI_NO_DESCS) { |
1148 | printk(KERN_ERR "DBRI: setup_descs: No descriptors\n"); |
1149 | return -1; |
1150 | } |
1151 | |
1152 | if (len > DBRI_TD_MAXCNT) |
1153 | mylen = DBRI_TD_MAXCNT; /* 8KB - 4 */ |
1154 | else |
1155 | mylen = len; |
1156 | |
1157 | if (mylen > period) |
1158 | mylen = period; |
1159 | |
1160 | dbri->next_desc[desc] = -1; |
1161 | dbri->dma->desc[desc].ba = dvma_buffer; |
1162 | dbri->dma->desc[desc].nda = 0; |
1163 | |
1164 | if (streamno == DBRI_PLAY) { |
1165 | dbri->dma->desc[desc].word1 = DBRI_TD_CNT(mylen); |
1166 | dbri->dma->desc[desc].word4 = 0; |
1167 | dbri->dma->desc[desc].word1 |= DBRI_TD_F | DBRI_TD_B; |
1168 | } else { |
1169 | dbri->dma->desc[desc].word1 = 0; |
1170 | dbri->dma->desc[desc].word4 = |
1171 | DBRI_RD_B | DBRI_RD_BCNT(mylen); |
1172 | } |
1173 | |
1174 | if (first_desc == -1) |
1175 | first_desc = desc; |
1176 | else { |
1177 | dbri->next_desc[last_desc] = desc; |
1178 | dbri->dma->desc[last_desc].nda = |
1179 | dbri->dma_dvma + dbri_dma_off(desc, desc); |
1180 | } |
1181 | |
1182 | last_desc = desc; |
1183 | dvma_buffer += mylen; |
1184 | len -= mylen; |
1185 | } |
1186 | |
1187 | if (first_desc == -1 || last_desc == -1) { |
1188 | printk(KERN_ERR "DBRI: setup_descs: " |
1189 | " Not enough descriptors available\n"); |
1190 | return -1; |
1191 | } |
1192 | |
1193 | dbri->dma->desc[last_desc].nda = |
1194 | dbri->dma_dvma + dbri_dma_off(desc, first_desc); |
1195 | dbri->next_desc[last_desc] = first_desc; |
1196 | dbri->pipes[info->pipe].first_desc = first_desc; |
1197 | dbri->pipes[info->pipe].desc = first_desc; |
1198 | |
1199 | #ifdef DBRI_DEBUG |
1200 | for (desc = first_desc; desc != -1;) { |
1201 | dprintk(D_DESC, "DESC %d: %08x %08x %08x %08x\n", |
1202 | desc, |
1203 | dbri->dma->desc[desc].word1, |
1204 | dbri->dma->desc[desc].ba, |
1205 | dbri->dma->desc[desc].nda, dbri->dma->desc[desc].word4); |
1206 | desc = dbri->next_desc[desc]; |
1207 | if (desc == first_desc) |
1208 | break; |
1209 | } |
1210 | #endif |
1211 | return 0; |
1212 | } |
1213 | |
1214 | /* |
1215 | **************************************************************************** |
1216 | ************************** DBRI - CHI interface **************************** |
1217 | **************************************************************************** |
1218 | |
1219 | The CHI is a four-wire (clock, frame sync, data in, data out) time-division |
1220 | multiplexed serial interface which the DBRI can operate in either master |
1221 | (give clock/frame sync) or slave (take clock/frame sync) mode. |
1222 | |
1223 | */ |
1224 | |
1225 | enum master_or_slave { CHImaster, CHIslave }; |
1226 | |
1227 | /* |
1228 | * Lock must not be held before calling it. |
1229 | */ |
1230 | static void reset_chi(struct snd_dbri *dbri, |
1231 | enum master_or_slave master_or_slave, |
1232 | int bits_per_frame) |
1233 | { |
1234 | s32 *cmd; |
1235 | int val; |
1236 | |
1237 | /* Set CHI Anchor: Pipe 16 */ |
1238 | |
1239 | cmd = dbri_cmdlock(dbri, 4); |
1240 | val = D_DTS_VO | D_DTS_VI | D_DTS_INS |
1241 | | D_DTS_PRVIN(16) | D_PIPE(16) | D_DTS_PRVOUT(16); |
1242 | *(cmd++) = DBRI_CMD(D_DTS, 0, val); |
1243 | *(cmd++) = D_TS_ANCHOR | D_TS_NEXT(16); |
1244 | *(cmd++) = D_TS_ANCHOR | D_TS_NEXT(16); |
1245 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
1246 | dbri_cmdsend(dbri, cmd, 4); |
1247 | |
1248 | dbri->pipes[16].sdp = 1; |
1249 | dbri->pipes[16].nextpipe = 16; |
1250 | |
1251 | cmd = dbri_cmdlock(dbri, 4); |
1252 | |
1253 | if (master_or_slave == CHIslave) { |
1254 | /* Setup DBRI for CHI Slave - receive clock, frame sync (FS) |
1255 | * |
1256 | * CHICM = 0 (slave mode, 8 kHz frame rate) |
1257 | * IR = give immediate CHI status interrupt |
1258 | * EN = give CHI status interrupt upon change |
1259 | */ |
1260 | *(cmd++) = DBRI_CMD(D_CHI, 0, D_CHI_CHICM(0)); |
1261 | } else { |
1262 | /* Setup DBRI for CHI Master - generate clock, FS |
1263 | * |
1264 | * BPF = bits per 8 kHz frame |
1265 | * 12.288 MHz / CHICM_divisor = clock rate |
1266 | * FD = 1 - drive CHIFS on rising edge of CHICK |
1267 | */ |
1268 | int clockrate = bits_per_frame * 8; |
1269 | int divisor = 12288 / clockrate; |
1270 | |
1271 | if (divisor > 255 || divisor * clockrate != 12288) |
1272 | printk(KERN_ERR "DBRI: illegal bits_per_frame " |
1273 | "in setup_chi\n"); |
1274 | |
1275 | *(cmd++) = DBRI_CMD(D_CHI, 0, D_CHI_CHICM(divisor) | D_CHI_FD |
1276 | | D_CHI_BPF(bits_per_frame)); |
1277 | } |
1278 | |
1279 | dbri->chi_bpf = bits_per_frame; |
1280 | |
1281 | /* CHI Data Mode |
1282 | * |
1283 | * RCE = 0 - receive on falling edge of CHICK |
1284 | * XCE = 1 - transmit on rising edge of CHICK |
1285 | * XEN = 1 - enable transmitter |
1286 | * REN = 1 - enable receiver |
1287 | */ |
1288 | |
1289 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
1290 | *(cmd++) = DBRI_CMD(D_CDM, 0, D_CDM_XCE | D_CDM_XEN | D_CDM_REN); |
1291 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
1292 | |
1293 | dbri_cmdsend(dbri, cmd, 4); |
1294 | } |
1295 | |
1296 | /* |
1297 | **************************************************************************** |
1298 | *********************** CS4215 audio codec management ********************** |
1299 | **************************************************************************** |
1300 | |
1301 | In the standard SPARC audio configuration, the CS4215 codec is attached |
1302 | to the DBRI via the CHI interface and few of the DBRI's PIO pins. |
1303 | |
1304 | * Lock must not be held before calling it. |
1305 | |
1306 | */ |
1307 | static __devinit void cs4215_setup_pipes(struct snd_dbri *dbri) |
1308 | { |
1309 | unsigned long flags; |
1310 | |
1311 | spin_lock_irqsave(&dbri->lock, flags); |
1312 | /* |
1313 | * Data mode: |
1314 | * Pipe 4: Send timeslots 1-4 (audio data) |
1315 | * Pipe 20: Send timeslots 5-8 (part of ctrl data) |
1316 | * Pipe 6: Receive timeslots 1-4 (audio data) |
1317 | * Pipe 21: Receive timeslots 6-7. We can only receive 20 bits via |
1318 | * interrupt, and the rest of the data (slot 5 and 8) is |
1319 | * not relevant for us (only for doublechecking). |
1320 | * |
1321 | * Control mode: |
1322 | * Pipe 17: Send timeslots 1-4 (slots 5-8 are read only) |
1323 | * Pipe 18: Receive timeslot 1 (clb). |
1324 | * Pipe 19: Receive timeslot 7 (version). |
1325 | */ |
1326 | |
1327 | setup_pipe(dbri, 4, D_SDP_MEM | D_SDP_TO_SER | D_SDP_MSB); |
1328 | setup_pipe(dbri, 20, D_SDP_FIXED | D_SDP_TO_SER | D_SDP_MSB); |
1329 | setup_pipe(dbri, 6, D_SDP_MEM | D_SDP_FROM_SER | D_SDP_MSB); |
1330 | setup_pipe(dbri, 21, D_SDP_FIXED | D_SDP_FROM_SER | D_SDP_MSB); |
1331 | |
1332 | setup_pipe(dbri, 17, D_SDP_FIXED | D_SDP_TO_SER | D_SDP_MSB); |
1333 | setup_pipe(dbri, 18, D_SDP_FIXED | D_SDP_FROM_SER | D_SDP_MSB); |
1334 | setup_pipe(dbri, 19, D_SDP_FIXED | D_SDP_FROM_SER | D_SDP_MSB); |
1335 | spin_unlock_irqrestore(&dbri->lock, flags); |
1336 | |
1337 | dbri_cmdwait(dbri); |
1338 | } |
1339 | |
1340 | static __devinit int cs4215_init_data(struct cs4215 *mm) |
1341 | { |
1342 | /* |
1343 | * No action, memory resetting only. |
1344 | * |
1345 | * Data Time Slot 5-8 |
1346 | * Speaker,Line and Headphone enable. Gain set to the half. |
1347 | * Input is mike. |
1348 | */ |
1349 | mm->data[0] = CS4215_LO(0x20) | CS4215_HE | CS4215_LE; |
1350 | mm->data[1] = CS4215_RO(0x20) | CS4215_SE; |
1351 | mm->data[2] = CS4215_LG(0x8) | CS4215_IS | CS4215_PIO0 | CS4215_PIO1; |
1352 | mm->data[3] = CS4215_RG(0x8) | CS4215_MA(0xf); |
1353 | |
1354 | /* |
1355 | * Control Time Slot 1-4 |
1356 | * 0: Default I/O voltage scale |
1357 | * 1: 8 bit ulaw, 8kHz, mono, high pass filter disabled |
1358 | * 2: Serial enable, CHI master, 128 bits per frame, clock 1 |
1359 | * 3: Tests disabled |
1360 | */ |
1361 | mm->ctrl[0] = CS4215_RSRVD_1 | CS4215_MLB; |
1362 | mm->ctrl[1] = CS4215_DFR_ULAW | CS4215_FREQ[0].csval; |
1363 | mm->ctrl[2] = CS4215_XCLK | CS4215_BSEL_128 | CS4215_FREQ[0].xtal; |
1364 | mm->ctrl[3] = 0; |
1365 | |
1366 | mm->status = 0; |
1367 | mm->version = 0xff; |
1368 | mm->precision = 8; /* For ULAW */ |
1369 | mm->channels = 1; |
1370 | |
1371 | return 0; |
1372 | } |
1373 | |
1374 | static void cs4215_setdata(struct snd_dbri *dbri, int muted) |
1375 | { |
1376 | if (muted) { |
1377 | dbri->mm.data[0] |= 63; |
1378 | dbri->mm.data[1] |= 63; |
1379 | dbri->mm.data[2] &= ~15; |
1380 | dbri->mm.data[3] &= ~15; |
1381 | } else { |
1382 | /* Start by setting the playback attenuation. */ |
1383 | struct dbri_streaminfo *info = &dbri->stream_info[DBRI_PLAY]; |
1384 | int left_gain = info->left_gain & 0x3f; |
1385 | int right_gain = info->right_gain & 0x3f; |
1386 | |
1387 | dbri->mm.data[0] &= ~0x3f; /* Reset the volume bits */ |
1388 | dbri->mm.data[1] &= ~0x3f; |
1389 | dbri->mm.data[0] |= (DBRI_MAX_VOLUME - left_gain); |
1390 | dbri->mm.data[1] |= (DBRI_MAX_VOLUME - right_gain); |
1391 | |
1392 | /* Now set the recording gain. */ |
1393 | info = &dbri->stream_info[DBRI_REC]; |
1394 | left_gain = info->left_gain & 0xf; |
1395 | right_gain = info->right_gain & 0xf; |
1396 | dbri->mm.data[2] |= CS4215_LG(left_gain); |
1397 | dbri->mm.data[3] |= CS4215_RG(right_gain); |
1398 | } |
1399 | |
1400 | xmit_fixed(dbri, 20, *(int *)dbri->mm.data); |
1401 | } |
1402 | |
1403 | /* |
1404 | * Set the CS4215 to data mode. |
1405 | */ |
1406 | static void cs4215_open(struct snd_dbri *dbri) |
1407 | { |
1408 | int data_width; |
1409 | u32 tmp; |
1410 | unsigned long flags; |
1411 | |
1412 | dprintk(D_MM, "cs4215_open: %d channels, %d bits\n", |
1413 | dbri->mm.channels, dbri->mm.precision); |
1414 | |
1415 | /* Temporarily mute outputs, and wait 1/8000 sec (125 us) |
1416 | * to make sure this takes. This avoids clicking noises. |
1417 | */ |
1418 | |
1419 | cs4215_setdata(dbri, 1); |
1420 | udelay(125); |
1421 | |
1422 | /* |
1423 | * Data mode: |
1424 | * Pipe 4: Send timeslots 1-4 (audio data) |
1425 | * Pipe 20: Send timeslots 5-8 (part of ctrl data) |
1426 | * Pipe 6: Receive timeslots 1-4 (audio data) |
1427 | * Pipe 21: Receive timeslots 6-7. We can only receive 20 bits via |
1428 | * interrupt, and the rest of the data (slot 5 and 8) is |
1429 | * not relevant for us (only for doublechecking). |
1430 | * |
1431 | * Just like in control mode, the time slots are all offset by eight |
1432 | * bits. The CS4215, it seems, observes TSIN (the delayed signal) |
1433 | * even if it's the CHI master. Don't ask me... |
1434 | */ |
1435 | spin_lock_irqsave(&dbri->lock, flags); |
1436 | tmp = sbus_readl(dbri->regs + REG0); |
1437 | tmp &= ~(D_C); /* Disable CHI */ |
1438 | sbus_writel(tmp, dbri->regs + REG0); |
1439 | |
1440 | /* Switch CS4215 to data mode - set PIO3 to 1 */ |
1441 | sbus_writel(D_ENPIO | D_PIO1 | D_PIO3 | |
1442 | (dbri->mm.onboard ? D_PIO0 : D_PIO2), dbri->regs + REG2); |
1443 | |
1444 | reset_chi(dbri, CHIslave, 128); |
1445 | |
1446 | /* Note: this next doesn't work for 8-bit stereo, because the two |
1447 | * channels would be on timeslots 1 and 3, with 2 and 4 idle. |
1448 | * (See CS4215 datasheet Fig 15) |
1449 | * |
1450 | * DBRI non-contiguous mode would be required to make this work. |
1451 | */ |
1452 | data_width = dbri->mm.channels * dbri->mm.precision; |
1453 | |
1454 | link_time_slot(dbri, 4, 16, 16, data_width, dbri->mm.offset); |
1455 | link_time_slot(dbri, 20, 4, 16, 32, dbri->mm.offset + 32); |
1456 | link_time_slot(dbri, 6, 16, 16, data_width, dbri->mm.offset); |
1457 | link_time_slot(dbri, 21, 6, 16, 16, dbri->mm.offset + 40); |
1458 | |
1459 | /* FIXME: enable CHI after _setdata? */ |
1460 | tmp = sbus_readl(dbri->regs + REG0); |
1461 | tmp |= D_C; /* Enable CHI */ |
1462 | sbus_writel(tmp, dbri->regs + REG0); |
1463 | spin_unlock_irqrestore(&dbri->lock, flags); |
1464 | |
1465 | cs4215_setdata(dbri, 0); |
1466 | } |
1467 | |
1468 | /* |
1469 | * Send the control information (i.e. audio format) |
1470 | */ |
1471 | static int cs4215_setctrl(struct snd_dbri *dbri) |
1472 | { |
1473 | int i, val; |
1474 | u32 tmp; |
1475 | unsigned long flags; |
1476 | |
1477 | /* FIXME - let the CPU do something useful during these delays */ |
1478 | |
1479 | /* Temporarily mute outputs, and wait 1/8000 sec (125 us) |
1480 | * to make sure this takes. This avoids clicking noises. |
1481 | */ |
1482 | cs4215_setdata(dbri, 1); |
1483 | udelay(125); |
1484 | |
1485 | /* |
1486 | * Enable Control mode: Set DBRI's PIO3 (4215's D/~C) to 0, then wait |
1487 | * 12 cycles <= 12/(5512.5*64) sec = 34.01 usec |
1488 | */ |
1489 | val = D_ENPIO | D_PIO1 | (dbri->mm.onboard ? D_PIO0 : D_PIO2); |
1490 | sbus_writel(val, dbri->regs + REG2); |
1491 | dprintk(D_MM, "cs4215_setctrl: reg2=0x%x\n", val); |
1492 | udelay(34); |
1493 | |
1494 | /* In Control mode, the CS4215 is a slave device, so the DBRI must |
1495 | * operate as CHI master, supplying clocking and frame synchronization. |
1496 | * |
1497 | * In Data mode, however, the CS4215 must be CHI master to insure |
1498 | * that its data stream is synchronous with its codec. |
1499 | * |
1500 | * The upshot of all this? We start by putting the DBRI into master |
1501 | * mode, program the CS4215 in Control mode, then switch the CS4215 |
1502 | * into Data mode and put the DBRI into slave mode. Various timing |
1503 | * requirements must be observed along the way. |
1504 | * |
1505 | * Oh, and one more thing, on a SPARCStation 20 (and maybe |
1506 | * others?), the addressing of the CS4215's time slots is |
1507 | * offset by eight bits, so we add eight to all the "cycle" |
1508 | * values in the Define Time Slot (DTS) commands. This is |
1509 | * done in hardware by a TI 248 that delays the DBRI->4215 |
1510 | * frame sync signal by eight clock cycles. Anybody know why? |
1511 | */ |
1512 | spin_lock_irqsave(&dbri->lock, flags); |
1513 | tmp = sbus_readl(dbri->regs + REG0); |
1514 | tmp &= ~D_C; /* Disable CHI */ |
1515 | sbus_writel(tmp, dbri->regs + REG0); |
1516 | |
1517 | reset_chi(dbri, CHImaster, 128); |
1518 | |
1519 | /* |
1520 | * Control mode: |
1521 | * Pipe 17: Send timeslots 1-4 (slots 5-8 are read only) |
1522 | * Pipe 18: Receive timeslot 1 (clb). |
1523 | * Pipe 19: Receive timeslot 7 (version). |
1524 | */ |
1525 | |
1526 | link_time_slot(dbri, 17, 16, 16, 32, dbri->mm.offset); |
1527 | link_time_slot(dbri, 18, 16, 16, 8, dbri->mm.offset); |
1528 | link_time_slot(dbri, 19, 18, 16, 8, dbri->mm.offset + 48); |
1529 | spin_unlock_irqrestore(&dbri->lock, flags); |
1530 | |
1531 | /* Wait for the chip to echo back CLB (Control Latch Bit) as zero */ |
1532 | dbri->mm.ctrl[0] &= ~CS4215_CLB; |
1533 | xmit_fixed(dbri, 17, *(int *)dbri->mm.ctrl); |
1534 | |
1535 | spin_lock_irqsave(&dbri->lock, flags); |
1536 | tmp = sbus_readl(dbri->regs + REG0); |
1537 | tmp |= D_C; /* Enable CHI */ |
1538 | sbus_writel(tmp, dbri->regs + REG0); |
1539 | spin_unlock_irqrestore(&dbri->lock, flags); |
1540 | |
1541 | for (i = 10; ((dbri->mm.status & 0xe4) != 0x20); --i) |
1542 | msleep_interruptible(1); |
1543 | |
1544 | if (i == 0) { |
1545 | dprintk(D_MM, "CS4215 didn't respond to CLB (0x%02x)\n", |
1546 | dbri->mm.status); |
1547 | return -1; |
1548 | } |
1549 | |
1550 | /* Disable changes to our copy of the version number, as we are about |
1551 | * to leave control mode. |
1552 | */ |
1553 | recv_fixed(dbri, 19, NULL); |
1554 | |
1555 | /* Terminate CS4215 control mode - data sheet says |
1556 | * "Set CLB=1 and send two more frames of valid control info" |
1557 | */ |
1558 | dbri->mm.ctrl[0] |= CS4215_CLB; |
1559 | xmit_fixed(dbri, 17, *(int *)dbri->mm.ctrl); |
1560 | |
1561 | /* Two frames of control info @ 8kHz frame rate = 250 us delay */ |
1562 | udelay(250); |
1563 | |
1564 | cs4215_setdata(dbri, 0); |
1565 | |
1566 | return 0; |
1567 | } |
1568 | |
1569 | /* |
1570 | * Setup the codec with the sampling rate, audio format and number of |
1571 | * channels. |
1572 | * As part of the process we resend the settings for the data |
1573 | * timeslots as well. |
1574 | */ |
1575 | static int cs4215_prepare(struct snd_dbri *dbri, unsigned int rate, |
1576 | snd_pcm_format_t format, unsigned int channels) |
1577 | { |
1578 | int freq_idx; |
1579 | int ret = 0; |
1580 | |
1581 | /* Lookup index for this rate */ |
1582 | for (freq_idx = 0; CS4215_FREQ[freq_idx].freq != 0; freq_idx++) { |
1583 | if (CS4215_FREQ[freq_idx].freq == rate) |
1584 | break; |
1585 | } |
1586 | if (CS4215_FREQ[freq_idx].freq != rate) { |
1587 | printk(KERN_WARNING "DBRI: Unsupported rate %d Hz\n", rate); |
1588 | return -1; |
1589 | } |
1590 | |
1591 | switch (format) { |
1592 | case SNDRV_PCM_FORMAT_MU_LAW: |
1593 | dbri->mm.ctrl[1] = CS4215_DFR_ULAW; |
1594 | dbri->mm.precision = 8; |
1595 | break; |
1596 | case SNDRV_PCM_FORMAT_A_LAW: |
1597 | dbri->mm.ctrl[1] = CS4215_DFR_ALAW; |
1598 | dbri->mm.precision = 8; |
1599 | break; |
1600 | case SNDRV_PCM_FORMAT_U8: |
1601 | dbri->mm.ctrl[1] = CS4215_DFR_LINEAR8; |
1602 | dbri->mm.precision = 8; |
1603 | break; |
1604 | case SNDRV_PCM_FORMAT_S16_BE: |
1605 | dbri->mm.ctrl[1] = CS4215_DFR_LINEAR16; |
1606 | dbri->mm.precision = 16; |
1607 | break; |
1608 | default: |
1609 | printk(KERN_WARNING "DBRI: Unsupported format %d\n", format); |
1610 | return -1; |
1611 | } |
1612 | |
1613 | /* Add rate parameters */ |
1614 | dbri->mm.ctrl[1] |= CS4215_FREQ[freq_idx].csval; |
1615 | dbri->mm.ctrl[2] = CS4215_XCLK | |
1616 | CS4215_BSEL_128 | CS4215_FREQ[freq_idx].xtal; |
1617 | |
1618 | dbri->mm.channels = channels; |
1619 | if (channels == 2) |
1620 | dbri->mm.ctrl[1] |= CS4215_DFR_STEREO; |
1621 | |
1622 | ret = cs4215_setctrl(dbri); |
1623 | if (ret == 0) |
1624 | cs4215_open(dbri); /* set codec to data mode */ |
1625 | |
1626 | return ret; |
1627 | } |
1628 | |
1629 | /* |
1630 | * |
1631 | */ |
1632 | static __devinit int cs4215_init(struct snd_dbri *dbri) |
1633 | { |
1634 | u32 reg2 = sbus_readl(dbri->regs + REG2); |
1635 | dprintk(D_MM, "cs4215_init: reg2=0x%x\n", reg2); |
1636 | |
1637 | /* Look for the cs4215 chips */ |
1638 | if (reg2 & D_PIO2) { |
1639 | dprintk(D_MM, "Onboard CS4215 detected\n"); |
1640 | dbri->mm.onboard = 1; |
1641 | } |
1642 | if (reg2 & D_PIO0) { |
1643 | dprintk(D_MM, "Speakerbox detected\n"); |
1644 | dbri->mm.onboard = 0; |
1645 | |
1646 | if (reg2 & D_PIO2) { |
1647 | printk(KERN_INFO "DBRI: Using speakerbox / " |
1648 | "ignoring onboard mmcodec.\n"); |
1649 | sbus_writel(D_ENPIO2, dbri->regs + REG2); |
1650 | } |
1651 | } |
1652 | |
1653 | if (!(reg2 & (D_PIO0 | D_PIO2))) { |
1654 | printk(KERN_ERR "DBRI: no mmcodec found.\n"); |
1655 | return -EIO; |
1656 | } |
1657 | |
1658 | cs4215_setup_pipes(dbri); |
1659 | cs4215_init_data(&dbri->mm); |
1660 | |
1661 | /* Enable capture of the status & version timeslots. */ |
1662 | recv_fixed(dbri, 18, &dbri->mm.status); |
1663 | recv_fixed(dbri, 19, &dbri->mm.version); |
1664 | |
1665 | dbri->mm.offset = dbri->mm.onboard ? 0 : 8; |
1666 | if (cs4215_setctrl(dbri) == -1 || dbri->mm.version == 0xff) { |
1667 | dprintk(D_MM, "CS4215 failed probe at offset %d\n", |
1668 | dbri->mm.offset); |
1669 | return -EIO; |
1670 | } |
1671 | dprintk(D_MM, "Found CS4215 at offset %d\n", dbri->mm.offset); |
1672 | |
1673 | return 0; |
1674 | } |
1675 | |
1676 | /* |
1677 | **************************************************************************** |
1678 | *************************** DBRI interrupt handler ************************* |
1679 | **************************************************************************** |
1680 | |
1681 | The DBRI communicates with the CPU mainly via a circular interrupt |
1682 | buffer. When an interrupt is signaled, the CPU walks through the |
1683 | buffer and calls dbri_process_one_interrupt() for each interrupt word. |
1684 | Complicated interrupts are handled by dedicated functions (which |
1685 | appear first in this file). Any pending interrupts can be serviced by |
1686 | calling dbri_process_interrupt_buffer(), which works even if the CPU's |
1687 | interrupts are disabled. |
1688 | |
1689 | */ |
1690 | |
1691 | /* xmit_descs() |
1692 | * |
1693 | * Starts transmitting the current TD's for recording/playing. |
1694 | * For playback, ALSA has filled the DMA memory with new data (we hope). |
1695 | */ |
1696 | static void xmit_descs(struct snd_dbri *dbri) |
1697 | { |
1698 | struct dbri_streaminfo *info; |
1699 | s32 *cmd; |
1700 | unsigned long flags; |
1701 | int first_td; |
1702 | |
1703 | if (dbri == NULL) |
1704 | return; /* Disabled */ |
1705 | |
1706 | info = &dbri->stream_info[DBRI_REC]; |
1707 | spin_lock_irqsave(&dbri->lock, flags); |
1708 | |
1709 | if (info->pipe >= 0) { |
1710 | first_td = dbri->pipes[info->pipe].first_desc; |
1711 | |
1712 | dprintk(D_DESC, "xmit_descs rec @ TD %d\n", first_td); |
1713 | |
1714 | /* Stream could be closed by the time we run. */ |
1715 | if (first_td >= 0) { |
1716 | cmd = dbri_cmdlock(dbri, 2); |
1717 | *(cmd++) = DBRI_CMD(D_SDP, 0, |
1718 | dbri->pipes[info->pipe].sdp |
1719 | | D_SDP_P | D_SDP_EVERY | D_SDP_C); |
1720 | *(cmd++) = dbri->dma_dvma + |
1721 | dbri_dma_off(desc, first_td); |
1722 | dbri_cmdsend(dbri, cmd, 2); |
1723 | |
1724 | /* Reset our admin of the pipe. */ |
1725 | dbri->pipes[info->pipe].desc = first_td; |
1726 | } |
1727 | } |
1728 | |
1729 | info = &dbri->stream_info[DBRI_PLAY]; |
1730 | |
1731 | if (info->pipe >= 0) { |
1732 | first_td = dbri->pipes[info->pipe].first_desc; |
1733 | |
1734 | dprintk(D_DESC, "xmit_descs play @ TD %d\n", first_td); |
1735 | |
1736 | /* Stream could be closed by the time we run. */ |
1737 | if (first_td >= 0) { |
1738 | cmd = dbri_cmdlock(dbri, 2); |
1739 | *(cmd++) = DBRI_CMD(D_SDP, 0, |
1740 | dbri->pipes[info->pipe].sdp |
1741 | | D_SDP_P | D_SDP_EVERY | D_SDP_C); |
1742 | *(cmd++) = dbri->dma_dvma + |
1743 | dbri_dma_off(desc, first_td); |
1744 | dbri_cmdsend(dbri, cmd, 2); |
1745 | |
1746 | /* Reset our admin of the pipe. */ |
1747 | dbri->pipes[info->pipe].desc = first_td; |
1748 | } |
1749 | } |
1750 | |
1751 | spin_unlock_irqrestore(&dbri->lock, flags); |
1752 | } |
1753 | |
1754 | /* transmission_complete_intr() |
1755 | * |
1756 | * Called by main interrupt handler when DBRI signals transmission complete |
1757 | * on a pipe (interrupt triggered by the B bit in a transmit descriptor). |
1758 | * |
1759 | * Walks through the pipe's list of transmit buffer descriptors and marks |
1760 | * them as available. Stops when the first descriptor is found without |
1761 | * TBC (Transmit Buffer Complete) set, or we've run through them all. |
1762 | * |
1763 | * The DMA buffers are not released. They form a ring buffer and |
1764 | * they are filled by ALSA while others are transmitted by DMA. |
1765 | * |
1766 | */ |
1767 | |
1768 | static void transmission_complete_intr(struct snd_dbri *dbri, int pipe) |
1769 | { |
1770 | struct dbri_streaminfo *info = &dbri->stream_info[DBRI_PLAY]; |
1771 | int td = dbri->pipes[pipe].desc; |
1772 | int status; |
1773 | |
1774 | while (td >= 0) { |
1775 | if (td >= DBRI_NO_DESCS) { |
1776 | printk(KERN_ERR "DBRI: invalid td on pipe %d\n", pipe); |
1777 | return; |
1778 | } |
1779 | |
1780 | status = DBRI_TD_STATUS(dbri->dma->desc[td].word4); |
1781 | if (!(status & DBRI_TD_TBC)) |
1782 | break; |
1783 | |
1784 | dprintk(D_INT, "TD %d, status 0x%02x\n", td, status); |
1785 | |
1786 | dbri->dma->desc[td].word4 = 0; /* Reset it for next time. */ |
1787 | info->offset += DBRI_RD_CNT(dbri->dma->desc[td].word1); |
1788 | |
1789 | td = dbri->next_desc[td]; |
1790 | dbri->pipes[pipe].desc = td; |
1791 | } |
1792 | |
1793 | /* Notify ALSA */ |
1794 | spin_unlock(&dbri->lock); |
1795 | snd_pcm_period_elapsed(info->substream); |
1796 | spin_lock(&dbri->lock); |
1797 | } |
1798 | |
1799 | static void reception_complete_intr(struct snd_dbri *dbri, int pipe) |
1800 | { |
1801 | struct dbri_streaminfo *info; |
1802 | int rd = dbri->pipes[pipe].desc; |
1803 | s32 status; |
1804 | |
1805 | if (rd < 0 || rd >= DBRI_NO_DESCS) { |
1806 | printk(KERN_ERR "DBRI: invalid rd on pipe %d\n", pipe); |
1807 | return; |
1808 | } |
1809 | |
1810 | dbri->pipes[pipe].desc = dbri->next_desc[rd]; |
1811 | status = dbri->dma->desc[rd].word1; |
1812 | dbri->dma->desc[rd].word1 = 0; /* Reset it for next time. */ |
1813 | |
1814 | info = &dbri->stream_info[DBRI_REC]; |
1815 | info->offset += DBRI_RD_CNT(status); |
1816 | |
1817 | /* FIXME: Check status */ |
1818 | |
1819 | dprintk(D_INT, "Recv RD %d, status 0x%02x, len %d\n", |
1820 | rd, DBRI_RD_STATUS(status), DBRI_RD_CNT(status)); |
1821 | |
1822 | /* Notify ALSA */ |
1823 | spin_unlock(&dbri->lock); |
1824 | snd_pcm_period_elapsed(info->substream); |
1825 | spin_lock(&dbri->lock); |
1826 | } |
1827 | |
1828 | static void dbri_process_one_interrupt(struct snd_dbri *dbri, int x) |
1829 | { |
1830 | int val = D_INTR_GETVAL(x); |
1831 | int channel = D_INTR_GETCHAN(x); |
1832 | int command = D_INTR_GETCMD(x); |
1833 | int code = D_INTR_GETCODE(x); |
1834 | #ifdef DBRI_DEBUG |
1835 | int rval = D_INTR_GETRVAL(x); |
1836 | #endif |
1837 | |
1838 | if (channel == D_INTR_CMD) { |
1839 | dprintk(D_CMD, "INTR: Command: %-5s Value:%d\n", |
1840 | cmds[command], val); |
1841 | } else { |
1842 | dprintk(D_INT, "INTR: Chan:%d Code:%d Val:%#x\n", |
1843 | channel, code, rval); |
1844 | } |
1845 | |
1846 | switch (code) { |
1847 | case D_INTR_CMDI: |
1848 | if (command != D_WAIT) |
1849 | printk(KERN_ERR "DBRI: Command read interrupt\n"); |
1850 | break; |
1851 | case D_INTR_BRDY: |
1852 | reception_complete_intr(dbri, channel); |
1853 | break; |
1854 | case D_INTR_XCMP: |
1855 | case D_INTR_MINT: |
1856 | transmission_complete_intr(dbri, channel); |
1857 | break; |
1858 | case D_INTR_UNDR: |
1859 | /* UNDR - Transmission underrun |
1860 | * resend SDP command with clear pipe bit (C) set |
1861 | */ |
1862 | { |
1863 | /* FIXME: do something useful in case of underrun */ |
1864 | printk(KERN_ERR "DBRI: Underrun error\n"); |
1865 | #if 0 |
1866 | s32 *cmd; |
1867 | int pipe = channel; |
1868 | int td = dbri->pipes[pipe].desc; |
1869 | |
1870 | dbri->dma->desc[td].word4 = 0; |
1871 | cmd = dbri_cmdlock(dbri, NoGetLock); |
1872 | *(cmd++) = DBRI_CMD(D_SDP, 0, |
1873 | dbri->pipes[pipe].sdp |
1874 | | D_SDP_P | D_SDP_C | D_SDP_2SAME); |
1875 | *(cmd++) = dbri->dma_dvma + dbri_dma_off(desc, td); |
1876 | dbri_cmdsend(dbri, cmd); |
1877 | #endif |
1878 | } |
1879 | break; |
1880 | case D_INTR_FXDT: |
1881 | /* FXDT - Fixed data change */ |
1882 | if (dbri->pipes[channel].sdp & D_SDP_MSB) |
1883 | val = reverse_bytes(val, dbri->pipes[channel].length); |
1884 | |
1885 | if (dbri->pipes[channel].recv_fixed_ptr) |
1886 | *(dbri->pipes[channel].recv_fixed_ptr) = val; |
1887 | break; |
1888 | default: |
1889 | if (channel != D_INTR_CMD) |
1890 | printk(KERN_WARNING |
1891 | "DBRI: Ignored Interrupt: %d (0x%x)\n", code, x); |
1892 | } |
1893 | } |
1894 | |
1895 | /* dbri_process_interrupt_buffer advances through the DBRI's interrupt |
1896 | * buffer until it finds a zero word (indicating nothing more to do |
1897 | * right now). Non-zero words require processing and are handed off |
1898 | * to dbri_process_one_interrupt AFTER advancing the pointer. |
1899 | */ |
1900 | static void dbri_process_interrupt_buffer(struct snd_dbri *dbri) |
1901 | { |
1902 | s32 x; |
1903 | |
1904 | while ((x = dbri->dma->intr[dbri->dbri_irqp]) != 0) { |
1905 | dbri->dma->intr[dbri->dbri_irqp] = 0; |
1906 | dbri->dbri_irqp++; |
1907 | if (dbri->dbri_irqp == DBRI_INT_BLK) |
1908 | dbri->dbri_irqp = 1; |
1909 | |
1910 | dbri_process_one_interrupt(dbri, x); |
1911 | } |
1912 | } |
1913 | |
1914 | static irqreturn_t snd_dbri_interrupt(int irq, void *dev_id) |
1915 | { |
1916 | struct snd_dbri *dbri = dev_id; |
1917 | static int errcnt = 0; |
1918 | int x; |
1919 | |
1920 | if (dbri == NULL) |
1921 | return IRQ_NONE; |
1922 | spin_lock(&dbri->lock); |
1923 | |
1924 | /* |
1925 | * Read it, so the interrupt goes away. |
1926 | */ |
1927 | x = sbus_readl(dbri->regs + REG1); |
1928 | |
1929 | if (x & (D_MRR | D_MLE | D_LBG | D_MBE)) { |
1930 | u32 tmp; |
1931 | |
1932 | if (x & D_MRR) |
1933 | printk(KERN_ERR |
1934 | "DBRI: Multiple Error Ack on SBus reg1=0x%x\n", |
1935 | x); |
1936 | if (x & D_MLE) |
1937 | printk(KERN_ERR |
1938 | "DBRI: Multiple Late Error on SBus reg1=0x%x\n", |
1939 | x); |
1940 | if (x & D_LBG) |
1941 | printk(KERN_ERR |
1942 | "DBRI: Lost Bus Grant on SBus reg1=0x%x\n", x); |
1943 | if (x & D_MBE) |
1944 | printk(KERN_ERR |
1945 | "DBRI: Burst Error on SBus reg1=0x%x\n", x); |
1946 | |
1947 | /* Some of these SBus errors cause the chip's SBus circuitry |
1948 | * to be disabled, so just re-enable and try to keep going. |
1949 | * |
1950 | * The only one I've seen is MRR, which will be triggered |
1951 | * if you let a transmit pipe underrun, then try to CDP it. |
1952 | * |
1953 | * If these things persist, we reset the chip. |
1954 | */ |
1955 | if ((++errcnt) % 10 == 0) { |
1956 | dprintk(D_INT, "Interrupt errors exceeded.\n"); |
1957 | dbri_reset(dbri); |
1958 | } else { |
1959 | tmp = sbus_readl(dbri->regs + REG0); |
1960 | tmp &= ~(D_D); |
1961 | sbus_writel(tmp, dbri->regs + REG0); |
1962 | } |
1963 | } |
1964 | |
1965 | dbri_process_interrupt_buffer(dbri); |
1966 | |
1967 | spin_unlock(&dbri->lock); |
1968 | |
1969 | return IRQ_HANDLED; |
1970 | } |
1971 | |
1972 | /**************************************************************************** |
1973 | PCM Interface |
1974 | ****************************************************************************/ |
1975 | static struct snd_pcm_hardware snd_dbri_pcm_hw = { |
1976 | .info = SNDRV_PCM_INFO_MMAP | |
1977 | SNDRV_PCM_INFO_INTERLEAVED | |
1978 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
1979 | SNDRV_PCM_INFO_MMAP_VALID | |
1980 | SNDRV_PCM_INFO_BATCH, |
1981 | .formats = SNDRV_PCM_FMTBIT_MU_LAW | |
1982 | SNDRV_PCM_FMTBIT_A_LAW | |
1983 | SNDRV_PCM_FMTBIT_U8 | |
1984 | SNDRV_PCM_FMTBIT_S16_BE, |
1985 | .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_5512, |
1986 | .rate_min = 5512, |
1987 | .rate_max = 48000, |
1988 | .channels_min = 1, |
1989 | .channels_max = 2, |
1990 | .buffer_bytes_max = 64 * 1024, |
1991 | .period_bytes_min = 1, |
1992 | .period_bytes_max = DBRI_TD_MAXCNT, |
1993 | .periods_min = 1, |
1994 | .periods_max = 1024, |
1995 | }; |
1996 | |
1997 | static int snd_hw_rule_format(struct snd_pcm_hw_params *params, |
1998 | struct snd_pcm_hw_rule *rule) |
1999 | { |
2000 | struct snd_interval *c = hw_param_interval(params, |
2001 | SNDRV_PCM_HW_PARAM_CHANNELS); |
2002 | struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
2003 | struct snd_mask fmt; |
2004 | |
2005 | snd_mask_any(&fmt); |
2006 | if (c->min > 1) { |
2007 | fmt.bits[0] &= SNDRV_PCM_FMTBIT_S16_BE; |
2008 | return snd_mask_refine(f, &fmt); |
2009 | } |
2010 | return 0; |
2011 | } |
2012 | |
2013 | static int snd_hw_rule_channels(struct snd_pcm_hw_params *params, |
2014 | struct snd_pcm_hw_rule *rule) |
2015 | { |
2016 | struct snd_interval *c = hw_param_interval(params, |
2017 | SNDRV_PCM_HW_PARAM_CHANNELS); |
2018 | struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
2019 | struct snd_interval ch; |
2020 | |
2021 | snd_interval_any(&ch); |
2022 | if (!(f->bits[0] & SNDRV_PCM_FMTBIT_S16_BE)) { |
2023 | ch.min = 1; |
2024 | ch.max = 1; |
2025 | ch.integer = 1; |
2026 | return snd_interval_refine(c, &ch); |
2027 | } |
2028 | return 0; |
2029 | } |
2030 | |
2031 | static int snd_dbri_open(struct snd_pcm_substream *substream) |
2032 | { |
2033 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2034 | struct snd_pcm_runtime *runtime = substream->runtime; |
2035 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); |
2036 | unsigned long flags; |
2037 | |
2038 | dprintk(D_USR, "open audio output.\n"); |
2039 | runtime->hw = snd_dbri_pcm_hw; |
2040 | |
2041 | spin_lock_irqsave(&dbri->lock, flags); |
2042 | info->substream = substream; |
2043 | info->offset = 0; |
2044 | info->dvma_buffer = 0; |
2045 | info->pipe = -1; |
2046 | spin_unlock_irqrestore(&dbri->lock, flags); |
2047 | |
2048 | snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
2049 | snd_hw_rule_format, NULL, SNDRV_PCM_HW_PARAM_FORMAT, |
2050 | -1); |
2051 | snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, |
2052 | snd_hw_rule_channels, NULL, |
2053 | SNDRV_PCM_HW_PARAM_CHANNELS, |
2054 | -1); |
2055 | |
2056 | cs4215_open(dbri); |
2057 | |
2058 | return 0; |
2059 | } |
2060 | |
2061 | static int snd_dbri_close(struct snd_pcm_substream *substream) |
2062 | { |
2063 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2064 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); |
2065 | |
2066 | dprintk(D_USR, "close audio output.\n"); |
2067 | info->substream = NULL; |
2068 | info->offset = 0; |
2069 | |
2070 | return 0; |
2071 | } |
2072 | |
2073 | static int snd_dbri_hw_params(struct snd_pcm_substream *substream, |
2074 | struct snd_pcm_hw_params *hw_params) |
2075 | { |
2076 | struct snd_pcm_runtime *runtime = substream->runtime; |
2077 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2078 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); |
2079 | int direction; |
2080 | int ret; |
2081 | |
2082 | /* set sampling rate, audio format and number of channels */ |
2083 | ret = cs4215_prepare(dbri, params_rate(hw_params), |
2084 | params_format(hw_params), |
2085 | params_channels(hw_params)); |
2086 | if (ret != 0) |
2087 | return ret; |
2088 | |
2089 | if ((ret = snd_pcm_lib_malloc_pages(substream, |
2090 | params_buffer_bytes(hw_params))) < 0) { |
2091 | printk(KERN_ERR "malloc_pages failed with %d\n", ret); |
2092 | return ret; |
2093 | } |
2094 | |
2095 | /* hw_params can get called multiple times. Only map the DMA once. |
2096 | */ |
2097 | if (info->dvma_buffer == 0) { |
2098 | if (DBRI_STREAMNO(substream) == DBRI_PLAY) |
2099 | direction = DMA_TO_DEVICE; |
2100 | else |
2101 | direction = DMA_FROM_DEVICE; |
2102 | |
2103 | info->dvma_buffer = |
2104 | dma_map_single(&dbri->op->dev, |
2105 | runtime->dma_area, |
2106 | params_buffer_bytes(hw_params), |
2107 | direction); |
2108 | } |
2109 | |
2110 | direction = params_buffer_bytes(hw_params); |
2111 | dprintk(D_USR, "hw_params: %d bytes, dvma=%x\n", |
2112 | direction, info->dvma_buffer); |
2113 | return 0; |
2114 | } |
2115 | |
2116 | static int snd_dbri_hw_free(struct snd_pcm_substream *substream) |
2117 | { |
2118 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2119 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); |
2120 | int direction; |
2121 | |
2122 | dprintk(D_USR, "hw_free.\n"); |
2123 | |
2124 | /* hw_free can get called multiple times. Only unmap the DMA once. |
2125 | */ |
2126 | if (info->dvma_buffer) { |
2127 | if (DBRI_STREAMNO(substream) == DBRI_PLAY) |
2128 | direction = DMA_TO_DEVICE; |
2129 | else |
2130 | direction = DMA_FROM_DEVICE; |
2131 | |
2132 | dma_unmap_single(&dbri->op->dev, info->dvma_buffer, |
2133 | substream->runtime->buffer_size, direction); |
2134 | info->dvma_buffer = 0; |
2135 | } |
2136 | if (info->pipe != -1) { |
2137 | reset_pipe(dbri, info->pipe); |
2138 | info->pipe = -1; |
2139 | } |
2140 | |
2141 | return snd_pcm_lib_free_pages(substream); |
2142 | } |
2143 | |
2144 | static int snd_dbri_prepare(struct snd_pcm_substream *substream) |
2145 | { |
2146 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2147 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); |
2148 | int ret; |
2149 | |
2150 | info->size = snd_pcm_lib_buffer_bytes(substream); |
2151 | if (DBRI_STREAMNO(substream) == DBRI_PLAY) |
2152 | info->pipe = 4; /* Send pipe */ |
2153 | else |
2154 | info->pipe = 6; /* Receive pipe */ |
2155 | |
2156 | spin_lock_irq(&dbri->lock); |
2157 | info->offset = 0; |
2158 | |
2159 | /* Setup the all the transmit/receive descriptors to cover the |
2160 | * whole DMA buffer. |
2161 | */ |
2162 | ret = setup_descs(dbri, DBRI_STREAMNO(substream), |
2163 | snd_pcm_lib_period_bytes(substream)); |
2164 | |
2165 | spin_unlock_irq(&dbri->lock); |
2166 | |
2167 | dprintk(D_USR, "prepare audio output. %d bytes\n", info->size); |
2168 | return ret; |
2169 | } |
2170 | |
2171 | static int snd_dbri_trigger(struct snd_pcm_substream *substream, int cmd) |
2172 | { |
2173 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2174 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); |
2175 | int ret = 0; |
2176 | |
2177 | switch (cmd) { |
2178 | case SNDRV_PCM_TRIGGER_START: |
2179 | dprintk(D_USR, "start audio, period is %d bytes\n", |
2180 | (int)snd_pcm_lib_period_bytes(substream)); |
2181 | /* Re-submit the TDs. */ |
2182 | xmit_descs(dbri); |
2183 | break; |
2184 | case SNDRV_PCM_TRIGGER_STOP: |
2185 | dprintk(D_USR, "stop audio.\n"); |
2186 | reset_pipe(dbri, info->pipe); |
2187 | break; |
2188 | default: |
2189 | ret = -EINVAL; |
2190 | } |
2191 | |
2192 | return ret; |
2193 | } |
2194 | |
2195 | static snd_pcm_uframes_t snd_dbri_pointer(struct snd_pcm_substream *substream) |
2196 | { |
2197 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2198 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); |
2199 | snd_pcm_uframes_t ret; |
2200 | |
2201 | ret = bytes_to_frames(substream->runtime, info->offset) |
2202 | % substream->runtime->buffer_size; |
2203 | dprintk(D_USR, "I/O pointer: %ld frames of %ld.\n", |
2204 | ret, substream->runtime->buffer_size); |
2205 | return ret; |
2206 | } |
2207 | |
2208 | static struct snd_pcm_ops snd_dbri_ops = { |
2209 | .open = snd_dbri_open, |
2210 | .close = snd_dbri_close, |
2211 | .ioctl = snd_pcm_lib_ioctl, |
2212 | .hw_params = snd_dbri_hw_params, |
2213 | .hw_free = snd_dbri_hw_free, |
2214 | .prepare = snd_dbri_prepare, |
2215 | .trigger = snd_dbri_trigger, |
2216 | .pointer = snd_dbri_pointer, |
2217 | }; |
2218 | |
2219 | static int __devinit snd_dbri_pcm(struct snd_card *card) |
2220 | { |
2221 | struct snd_pcm *pcm; |
2222 | int err; |
2223 | |
2224 | if ((err = snd_pcm_new(card, |
2225 | /* ID */ "sun_dbri", |
2226 | /* device */ 0, |
2227 | /* playback count */ 1, |
2228 | /* capture count */ 1, &pcm)) < 0) |
2229 | return err; |
2230 | |
2231 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_dbri_ops); |
2232 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_dbri_ops); |
2233 | |
2234 | pcm->private_data = card->private_data; |
2235 | pcm->info_flags = 0; |
2236 | strcpy(pcm->name, card->shortname); |
2237 | |
2238 | if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, |
2239 | SNDRV_DMA_TYPE_CONTINUOUS, |
2240 | snd_dma_continuous_data(GFP_KERNEL), |
2241 | 64 * 1024, 64 * 1024)) < 0) |
2242 | return err; |
2243 | |
2244 | return 0; |
2245 | } |
2246 | |
2247 | /***************************************************************************** |
2248 | Mixer interface |
2249 | *****************************************************************************/ |
2250 | |
2251 | static int snd_cs4215_info_volume(struct snd_kcontrol *kcontrol, |
2252 | struct snd_ctl_elem_info *uinfo) |
2253 | { |
2254 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
2255 | uinfo->count = 2; |
2256 | uinfo->value.integer.min = 0; |
2257 | if (kcontrol->private_value == DBRI_PLAY) |
2258 | uinfo->value.integer.max = DBRI_MAX_VOLUME; |
2259 | else |
2260 | uinfo->value.integer.max = DBRI_MAX_GAIN; |
2261 | return 0; |
2262 | } |
2263 | |
2264 | static int snd_cs4215_get_volume(struct snd_kcontrol *kcontrol, |
2265 | struct snd_ctl_elem_value *ucontrol) |
2266 | { |
2267 | struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol); |
2268 | struct dbri_streaminfo *info; |
2269 | |
2270 | if (snd_BUG_ON(!dbri)) |
2271 | return -EINVAL; |
2272 | info = &dbri->stream_info[kcontrol->private_value]; |
2273 | |
2274 | ucontrol->value.integer.value[0] = info->left_gain; |
2275 | ucontrol->value.integer.value[1] = info->right_gain; |
2276 | return 0; |
2277 | } |
2278 | |
2279 | static int snd_cs4215_put_volume(struct snd_kcontrol *kcontrol, |
2280 | struct snd_ctl_elem_value *ucontrol) |
2281 | { |
2282 | struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol); |
2283 | struct dbri_streaminfo *info = |
2284 | &dbri->stream_info[kcontrol->private_value]; |
2285 | unsigned int vol[2]; |
2286 | int changed = 0; |
2287 | |
2288 | vol[0] = ucontrol->value.integer.value[0]; |
2289 | vol[1] = ucontrol->value.integer.value[1]; |
2290 | if (kcontrol->private_value == DBRI_PLAY) { |
2291 | if (vol[0] > DBRI_MAX_VOLUME || vol[1] > DBRI_MAX_VOLUME) |
2292 | return -EINVAL; |
2293 | } else { |
2294 | if (vol[0] > DBRI_MAX_GAIN || vol[1] > DBRI_MAX_GAIN) |
2295 | return -EINVAL; |
2296 | } |
2297 | |
2298 | if (info->left_gain != vol[0]) { |
2299 | info->left_gain = vol[0]; |
2300 | changed = 1; |
2301 | } |
2302 | if (info->right_gain != vol[1]) { |
2303 | info->right_gain = vol[1]; |
2304 | changed = 1; |
2305 | } |
2306 | if (changed) { |
2307 | /* First mute outputs, and wait 1/8000 sec (125 us) |
2308 | * to make sure this takes. This avoids clicking noises. |
2309 | */ |
2310 | cs4215_setdata(dbri, 1); |
2311 | udelay(125); |
2312 | cs4215_setdata(dbri, 0); |
2313 | } |
2314 | return changed; |
2315 | } |
2316 | |
2317 | static int snd_cs4215_info_single(struct snd_kcontrol *kcontrol, |
2318 | struct snd_ctl_elem_info *uinfo) |
2319 | { |
2320 | int mask = (kcontrol->private_value >> 16) & 0xff; |
2321 | |
2322 | uinfo->type = (mask == 1) ? |
2323 | SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; |
2324 | uinfo->count = 1; |
2325 | uinfo->value.integer.min = 0; |
2326 | uinfo->value.integer.max = mask; |
2327 | return 0; |
2328 | } |
2329 | |
2330 | static int snd_cs4215_get_single(struct snd_kcontrol *kcontrol, |
2331 | struct snd_ctl_elem_value *ucontrol) |
2332 | { |
2333 | struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol); |
2334 | int elem = kcontrol->private_value & 0xff; |
2335 | int shift = (kcontrol->private_value >> 8) & 0xff; |
2336 | int mask = (kcontrol->private_value >> 16) & 0xff; |
2337 | int invert = (kcontrol->private_value >> 24) & 1; |
2338 | |
2339 | if (snd_BUG_ON(!dbri)) |
2340 | return -EINVAL; |
2341 | |
2342 | if (elem < 4) |
2343 | ucontrol->value.integer.value[0] = |
2344 | (dbri->mm.data[elem] >> shift) & mask; |
2345 | else |
2346 | ucontrol->value.integer.value[0] = |
2347 | (dbri->mm.ctrl[elem - 4] >> shift) & mask; |
2348 | |
2349 | if (invert == 1) |
2350 | ucontrol->value.integer.value[0] = |
2351 | mask - ucontrol->value.integer.value[0]; |
2352 | return 0; |
2353 | } |
2354 | |
2355 | static int snd_cs4215_put_single(struct snd_kcontrol *kcontrol, |
2356 | struct snd_ctl_elem_value *ucontrol) |
2357 | { |
2358 | struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol); |
2359 | int elem = kcontrol->private_value & 0xff; |
2360 | int shift = (kcontrol->private_value >> 8) & 0xff; |
2361 | int mask = (kcontrol->private_value >> 16) & 0xff; |
2362 | int invert = (kcontrol->private_value >> 24) & 1; |
2363 | int changed = 0; |
2364 | unsigned short val; |
2365 | |
2366 | if (snd_BUG_ON(!dbri)) |
2367 | return -EINVAL; |
2368 | |
2369 | val = (ucontrol->value.integer.value[0] & mask); |
2370 | if (invert == 1) |
2371 | val = mask - val; |
2372 | val <<= shift; |
2373 | |
2374 | if (elem < 4) { |
2375 | dbri->mm.data[elem] = (dbri->mm.data[elem] & |
2376 | ~(mask << shift)) | val; |
2377 | changed = (val != dbri->mm.data[elem]); |
2378 | } else { |
2379 | dbri->mm.ctrl[elem - 4] = (dbri->mm.ctrl[elem - 4] & |
2380 | ~(mask << shift)) | val; |
2381 | changed = (val != dbri->mm.ctrl[elem - 4]); |
2382 | } |
2383 | |
2384 | dprintk(D_GEN, "put_single: mask=0x%x, changed=%d, " |
2385 | "mixer-value=%ld, mm-value=0x%x\n", |
2386 | mask, changed, ucontrol->value.integer.value[0], |
2387 | dbri->mm.data[elem & 3]); |
2388 | |
2389 | if (changed) { |
2390 | /* First mute outputs, and wait 1/8000 sec (125 us) |
2391 | * to make sure this takes. This avoids clicking noises. |
2392 | */ |
2393 | cs4215_setdata(dbri, 1); |
2394 | udelay(125); |
2395 | cs4215_setdata(dbri, 0); |
2396 | } |
2397 | return changed; |
2398 | } |
2399 | |
2400 | /* Entries 0-3 map to the 4 data timeslots, entries 4-7 map to the 4 control |
2401 | timeslots. Shift is the bit offset in the timeslot, mask defines the |
2402 | number of bits. invert is a boolean for use with attenuation. |
2403 | */ |
2404 | #define CS4215_SINGLE(xname, entry, shift, mask, invert) \ |
2405 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ |
2406 | .info = snd_cs4215_info_single, \ |
2407 | .get = snd_cs4215_get_single, .put = snd_cs4215_put_single, \ |
2408 | .private_value = (entry) | ((shift) << 8) | ((mask) << 16) | \ |
2409 | ((invert) << 24) }, |
2410 | |
2411 | static struct snd_kcontrol_new dbri_controls[] __devinitdata = { |
2412 | { |
2413 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
2414 | .name = "Playback Volume", |
2415 | .info = snd_cs4215_info_volume, |
2416 | .get = snd_cs4215_get_volume, |
2417 | .put = snd_cs4215_put_volume, |
2418 | .private_value = DBRI_PLAY, |
2419 | }, |
2420 | CS4215_SINGLE("Headphone switch", 0, 7, 1, 0) |
2421 | CS4215_SINGLE("Line out switch", 0, 6, 1, 0) |
2422 | CS4215_SINGLE("Speaker switch", 1, 6, 1, 0) |
2423 | { |
2424 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
2425 | .name = "Capture Volume", |
2426 | .info = snd_cs4215_info_volume, |
2427 | .get = snd_cs4215_get_volume, |
2428 | .put = snd_cs4215_put_volume, |
2429 | .private_value = DBRI_REC, |
2430 | }, |
2431 | /* FIXME: mic/line switch */ |
2432 | CS4215_SINGLE("Line in switch", 2, 4, 1, 0) |
2433 | CS4215_SINGLE("High Pass Filter switch", 5, 7, 1, 0) |
2434 | CS4215_SINGLE("Monitor Volume", 3, 4, 0xf, 1) |
2435 | CS4215_SINGLE("Mic boost", 4, 4, 1, 1) |
2436 | }; |
2437 | |
2438 | static int __devinit snd_dbri_mixer(struct snd_card *card) |
2439 | { |
2440 | int idx, err; |
2441 | struct snd_dbri *dbri; |
2442 | |
2443 | if (snd_BUG_ON(!card || !card->private_data)) |
2444 | return -EINVAL; |
2445 | dbri = card->private_data; |
2446 | |
2447 | strcpy(card->mixername, card->shortname); |
2448 | |
2449 | for (idx = 0; idx < ARRAY_SIZE(dbri_controls); idx++) { |
2450 | err = snd_ctl_add(card, |
2451 | snd_ctl_new1(&dbri_controls[idx], dbri)); |
2452 | if (err < 0) |
2453 | return err; |
2454 | } |
2455 | |
2456 | for (idx = DBRI_REC; idx < DBRI_NO_STREAMS; idx++) { |
2457 | dbri->stream_info[idx].left_gain = 0; |
2458 | dbri->stream_info[idx].right_gain = 0; |
2459 | } |
2460 | |
2461 | return 0; |
2462 | } |
2463 | |
2464 | /**************************************************************************** |
2465 | /proc interface |
2466 | ****************************************************************************/ |
2467 | static void dbri_regs_read(struct snd_info_entry *entry, |
2468 | struct snd_info_buffer *buffer) |
2469 | { |
2470 | struct snd_dbri *dbri = entry->private_data; |
2471 | |
2472 | snd_iprintf(buffer, "REG0: 0x%x\n", sbus_readl(dbri->regs + REG0)); |
2473 | snd_iprintf(buffer, "REG2: 0x%x\n", sbus_readl(dbri->regs + REG2)); |
2474 | snd_iprintf(buffer, "REG8: 0x%x\n", sbus_readl(dbri->regs + REG8)); |
2475 | snd_iprintf(buffer, "REG9: 0x%x\n", sbus_readl(dbri->regs + REG9)); |
2476 | } |
2477 | |
2478 | #ifdef DBRI_DEBUG |
2479 | static void dbri_debug_read(struct snd_info_entry *entry, |
2480 | struct snd_info_buffer *buffer) |
2481 | { |
2482 | struct snd_dbri *dbri = entry->private_data; |
2483 | int pipe; |
2484 | snd_iprintf(buffer, "debug=%d\n", dbri_debug); |
2485 | |
2486 | for (pipe = 0; pipe < 32; pipe++) { |
2487 | if (pipe_active(dbri, pipe)) { |
2488 | struct dbri_pipe *pptr = &dbri->pipes[pipe]; |
2489 | snd_iprintf(buffer, |
2490 | "Pipe %d: %s SDP=0x%x desc=%d, " |
2491 | "len=%d next %d\n", |
2492 | pipe, |
2493 | (pptr->sdp & D_SDP_TO_SER) ? "output" : |
2494 | "input", |
2495 | pptr->sdp, pptr->desc, |
2496 | pptr->length, pptr->nextpipe); |
2497 | } |
2498 | } |
2499 | } |
2500 | #endif |
2501 | |
2502 | static void __devinit snd_dbri_proc(struct snd_card *card) |
2503 | { |
2504 | struct snd_dbri *dbri = card->private_data; |
2505 | struct snd_info_entry *entry; |
2506 | |
2507 | if (!snd_card_proc_new(card, "regs", &entry)) |
2508 | snd_info_set_text_ops(entry, dbri, dbri_regs_read); |
2509 | |
2510 | #ifdef DBRI_DEBUG |
2511 | if (!snd_card_proc_new(card, "debug", &entry)) { |
2512 | snd_info_set_text_ops(entry, dbri, dbri_debug_read); |
2513 | entry->mode = S_IFREG | S_IRUGO; /* Readable only. */ |
2514 | } |
2515 | #endif |
2516 | } |
2517 | |
2518 | /* |
2519 | **************************************************************************** |
2520 | **************************** Initialization ******************************** |
2521 | **************************************************************************** |
2522 | */ |
2523 | static void snd_dbri_free(struct snd_dbri *dbri); |
2524 | |
2525 | static int __devinit snd_dbri_create(struct snd_card *card, |
2526 | struct platform_device *op, |
2527 | int irq, int dev) |
2528 | { |
2529 | struct snd_dbri *dbri = card->private_data; |
2530 | int err; |
2531 | |
2532 | spin_lock_init(&dbri->lock); |
2533 | dbri->op = op; |
2534 | dbri->irq = irq; |
2535 | |
2536 | dbri->dma = dma_alloc_coherent(&op->dev, |
2537 | sizeof(struct dbri_dma), |
2538 | &dbri->dma_dvma, GFP_ATOMIC); |
2539 | if (!dbri->dma) |
2540 | return -ENOMEM; |
2541 | memset((void *)dbri->dma, 0, sizeof(struct dbri_dma)); |
2542 | |
2543 | dprintk(D_GEN, "DMA Cmd Block 0x%p (0x%08x)\n", |
2544 | dbri->dma, dbri->dma_dvma); |
2545 | |
2546 | /* Map the registers into memory. */ |
2547 | dbri->regs_size = resource_size(&op->resource[0]); |
2548 | dbri->regs = of_ioremap(&op->resource[0], 0, |
2549 | dbri->regs_size, "DBRI Registers"); |
2550 | if (!dbri->regs) { |
2551 | printk(KERN_ERR "DBRI: could not allocate registers\n"); |
2552 | dma_free_coherent(&op->dev, sizeof(struct dbri_dma), |
2553 | (void *)dbri->dma, dbri->dma_dvma); |
2554 | return -EIO; |
2555 | } |
2556 | |
2557 | err = request_irq(dbri->irq, snd_dbri_interrupt, IRQF_SHARED, |
2558 | "DBRI audio", dbri); |
2559 | if (err) { |
2560 | printk(KERN_ERR "DBRI: Can't get irq %d\n", dbri->irq); |
2561 | of_iounmap(&op->resource[0], dbri->regs, dbri->regs_size); |
2562 | dma_free_coherent(&op->dev, sizeof(struct dbri_dma), |
2563 | (void *)dbri->dma, dbri->dma_dvma); |
2564 | return err; |
2565 | } |
2566 | |
2567 | /* Do low level initialization of the DBRI and CS4215 chips */ |
2568 | dbri_initialize(dbri); |
2569 | err = cs4215_init(dbri); |
2570 | if (err) { |
2571 | snd_dbri_free(dbri); |
2572 | return err; |
2573 | } |
2574 | |
2575 | return 0; |
2576 | } |
2577 | |
2578 | static void snd_dbri_free(struct snd_dbri *dbri) |
2579 | { |
2580 | dprintk(D_GEN, "snd_dbri_free\n"); |
2581 | dbri_reset(dbri); |
2582 | |
2583 | if (dbri->irq) |
2584 | free_irq(dbri->irq, dbri); |
2585 | |
2586 | if (dbri->regs) |
2587 | of_iounmap(&dbri->op->resource[0], dbri->regs, dbri->regs_size); |
2588 | |
2589 | if (dbri->dma) |
2590 | dma_free_coherent(&dbri->op->dev, |
2591 | sizeof(struct dbri_dma), |
2592 | (void *)dbri->dma, dbri->dma_dvma); |
2593 | } |
2594 | |
2595 | static int __devinit dbri_probe(struct platform_device *op) |
2596 | { |
2597 | struct snd_dbri *dbri; |
2598 | struct resource *rp; |
2599 | struct snd_card *card; |
2600 | static int dev = 0; |
2601 | int irq; |
2602 | int err; |
2603 | |
2604 | if (dev >= SNDRV_CARDS) |
2605 | return -ENODEV; |
2606 | if (!enable[dev]) { |
2607 | dev++; |
2608 | return -ENOENT; |
2609 | } |
2610 | |
2611 | irq = op->archdata.irqs[0]; |
2612 | if (irq <= 0) { |
2613 | printk(KERN_ERR "DBRI-%d: No IRQ.\n", dev); |
2614 | return -ENODEV; |
2615 | } |
2616 | |
2617 | err = snd_card_create(index[dev], id[dev], THIS_MODULE, |
2618 | sizeof(struct snd_dbri), &card); |
2619 | if (err < 0) |
2620 | return err; |
2621 | |
2622 | strcpy(card->driver, "DBRI"); |
2623 | strcpy(card->shortname, "Sun DBRI"); |
2624 | rp = &op->resource[0]; |
2625 | sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d", |
2626 | card->shortname, |
2627 | rp->flags & 0xffL, (unsigned long long)rp->start, irq); |
2628 | |
2629 | err = snd_dbri_create(card, op, irq, dev); |
2630 | if (err < 0) { |
2631 | snd_card_free(card); |
2632 | return err; |
2633 | } |
2634 | |
2635 | dbri = card->private_data; |
2636 | err = snd_dbri_pcm(card); |
2637 | if (err < 0) |
2638 | goto _err; |
2639 | |
2640 | err = snd_dbri_mixer(card); |
2641 | if (err < 0) |
2642 | goto _err; |
2643 | |
2644 | /* /proc file handling */ |
2645 | snd_dbri_proc(card); |
2646 | dev_set_drvdata(&op->dev, card); |
2647 | |
2648 | err = snd_card_register(card); |
2649 | if (err < 0) |
2650 | goto _err; |
2651 | |
2652 | printk(KERN_INFO "audio%d at %p (irq %d) is DBRI(%c)+CS4215(%d)\n", |
2653 | dev, dbri->regs, |
2654 | dbri->irq, op->dev.of_node->name[9], dbri->mm.version); |
2655 | dev++; |
2656 | |
2657 | return 0; |
2658 | |
2659 | _err: |
2660 | snd_dbri_free(dbri); |
2661 | snd_card_free(card); |
2662 | return err; |
2663 | } |
2664 | |
2665 | static int __devexit dbri_remove(struct platform_device *op) |
2666 | { |
2667 | struct snd_card *card = dev_get_drvdata(&op->dev); |
2668 | |
2669 | snd_dbri_free(card->private_data); |
2670 | snd_card_free(card); |
2671 | |
2672 | dev_set_drvdata(&op->dev, NULL); |
2673 | |
2674 | return 0; |
2675 | } |
2676 | |
2677 | static const struct of_device_id dbri_match[] = { |
2678 | { |
2679 | .name = "SUNW,DBRIe", |
2680 | }, |
2681 | { |
2682 | .name = "SUNW,DBRIf", |
2683 | }, |
2684 | {}, |
2685 | }; |
2686 | |
2687 | MODULE_DEVICE_TABLE(of, dbri_match); |
2688 | |
2689 | static struct platform_driver dbri_sbus_driver = { |
2690 | .driver = { |
2691 | .name = "dbri", |
2692 | .owner = THIS_MODULE, |
2693 | .of_match_table = dbri_match, |
2694 | }, |
2695 | .probe = dbri_probe, |
2696 | .remove = __devexit_p(dbri_remove), |
2697 | }; |
2698 | |
2699 | /* Probe for the dbri chip and then attach the driver. */ |
2700 | static int __init dbri_init(void) |
2701 | { |
2702 | return platform_driver_register(&dbri_sbus_driver); |
2703 | } |
2704 | |
2705 | static void __exit dbri_exit(void) |
2706 | { |
2707 | platform_driver_unregister(&dbri_sbus_driver); |
2708 | } |
2709 | |
2710 | module_init(dbri_init); |
2711 | module_exit(dbri_exit); |
2712 |
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v2.6.34-rc5
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