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1bd9debf TI |
1 | /* |
2 | * Driver for DBRI sound chip found on Sparcs. | |
4338829e | 3 | * Copyright (C) 2004, 2005 Martin Habets (mhabets@users.sourceforge.net) |
1bd9debf | 4 | * |
1be54c82 KH |
5 | * Converted to ring buffered version by Krzysztof Helt (krzysztof.h1@wp.pl) |
6 | * | |
1bd9debf TI |
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 lowlevel 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) Tranceiver" 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 (formarly 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, nr 0-15) or between two serial | |
31 | * devices (short pipes, nr 16-31), or simply send a fixed data to a serial | |
32 | * device (short pipes). | |
33 | * A timeslot defines the bit-offset and nr 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 | |
5fc3a2b2 | 39 | * parameters (volume, output selection) timemultiplexed in 8 byte |
1bd9debf TI |
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 onboard | |
44 | * & the speakerbox codec simultanously, 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. | |
4338829e MH |
48 | * |
49 | * I've tried to stick to the following function naming conventions: | |
50 | * snd_* ALSA stuff | |
d254c8f7 | 51 | * cs4215_* CS4215 codec specific stuff |
4338829e MH |
52 | * dbri_* DBRI high-level stuff |
53 | * other DBRI low-level stuff | |
1bd9debf TI |
54 | */ |
55 | ||
56 | #include <sound/driver.h> | |
57 | #include <linux/interrupt.h> | |
58 | #include <linux/delay.h> | |
59 | ||
60 | #include <sound/core.h> | |
61 | #include <sound/pcm.h> | |
62 | #include <sound/pcm_params.h> | |
63 | #include <sound/info.h> | |
64 | #include <sound/control.h> | |
65 | #include <sound/initval.h> | |
66 | ||
67 | #include <asm/irq.h> | |
68 | #include <asm/io.h> | |
69 | #include <asm/sbus.h> | |
70 | #include <asm/atomic.h> | |
71 | ||
72 | MODULE_AUTHOR("Rudolf Koenig, Brent Baccala and Martin Habets"); | |
73 | MODULE_DESCRIPTION("Sun DBRI"); | |
74 | MODULE_LICENSE("GPL"); | |
75 | MODULE_SUPPORTED_DEVICE("{{Sun,DBRI}}"); | |
76 | ||
77 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
78 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
79 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ | |
80 | ||
81 | module_param_array(index, int, NULL, 0444); | |
82 | MODULE_PARM_DESC(index, "Index value for Sun DBRI soundcard."); | |
83 | module_param_array(id, charp, NULL, 0444); | |
84 | MODULE_PARM_DESC(id, "ID string for Sun DBRI soundcard."); | |
85 | module_param_array(enable, bool, NULL, 0444); | |
86 | MODULE_PARM_DESC(enable, "Enable Sun DBRI soundcard."); | |
87 | ||
88 | #define DBRI_DEBUG | |
89 | ||
90 | #define D_INT (1<<0) | |
91 | #define D_GEN (1<<1) | |
92 | #define D_CMD (1<<2) | |
93 | #define D_MM (1<<3) | |
94 | #define D_USR (1<<4) | |
95 | #define D_DESC (1<<5) | |
96 | ||
6581f4e7 | 97 | static int dbri_debug; |
4338829e | 98 | module_param(dbri_debug, int, 0644); |
1bd9debf TI |
99 | MODULE_PARM_DESC(dbri_debug, "Debug value for Sun DBRI soundcard."); |
100 | ||
101 | #ifdef DBRI_DEBUG | |
102 | static char *cmds[] = { | |
103 | "WAIT", "PAUSE", "JUMP", "IIQ", "REX", "SDP", "CDP", "DTS", | |
104 | "SSP", "CHI", "NT", "TE", "CDEC", "TEST", "CDM", "RESRV" | |
105 | }; | |
106 | ||
107 | #define dprintk(a, x...) if(dbri_debug & a) printk(KERN_DEBUG x) | |
108 | ||
1bd9debf TI |
109 | #else |
110 | #define dprintk(a, x...) | |
111 | ||
1bd9debf TI |
112 | #endif /* DBRI_DEBUG */ |
113 | ||
42fe7647 KH |
114 | #define DBRI_CMD(cmd, intr, value) ((cmd << 28) | \ |
115 | (intr << 27) | \ | |
116 | value) | |
117 | ||
1bd9debf TI |
118 | /*************************************************************************** |
119 | CS4215 specific definitions and structures | |
120 | ****************************************************************************/ | |
121 | ||
122 | struct cs4215 { | |
123 | __u8 data[4]; /* Data mode: Time slots 5-8 */ | |
124 | __u8 ctrl[4]; /* Ctrl mode: Time slots 1-4 */ | |
125 | __u8 onboard; | |
126 | __u8 offset; /* Bit offset from frame sync to time slot 1 */ | |
127 | volatile __u32 status; | |
128 | volatile __u32 version; | |
129 | __u8 precision; /* In bits, either 8 or 16 */ | |
130 | __u8 channels; /* 1 or 2 */ | |
131 | }; | |
132 | ||
133 | /* | |
134 | * Control mode first | |
135 | */ | |
136 | ||
137 | /* Time Slot 1, Status register */ | |
138 | #define CS4215_CLB (1<<2) /* Control Latch Bit */ | |
139 | #define CS4215_OLB (1<<3) /* 1: line: 2.0V, speaker 4V */ | |
140 | /* 0: line: 2.8V, speaker 8V */ | |
141 | #define CS4215_MLB (1<<4) /* 1: Microphone: 20dB gain disabled */ | |
142 | #define CS4215_RSRVD_1 (1<<5) | |
143 | ||
144 | /* Time Slot 2, Data Format Register */ | |
145 | #define CS4215_DFR_LINEAR16 0 | |
146 | #define CS4215_DFR_ULAW 1 | |
147 | #define CS4215_DFR_ALAW 2 | |
148 | #define CS4215_DFR_LINEAR8 3 | |
149 | #define CS4215_DFR_STEREO (1<<2) | |
150 | static struct { | |
151 | unsigned short freq; | |
152 | unsigned char xtal; | |
153 | unsigned char csval; | |
154 | } CS4215_FREQ[] = { | |
155 | { 8000, (1 << 4), (0 << 3) }, | |
156 | { 16000, (1 << 4), (1 << 3) }, | |
157 | { 27429, (1 << 4), (2 << 3) }, /* Actually 24428.57 */ | |
158 | { 32000, (1 << 4), (3 << 3) }, | |
159 | /* { NA, (1 << 4), (4 << 3) }, */ | |
160 | /* { NA, (1 << 4), (5 << 3) }, */ | |
161 | { 48000, (1 << 4), (6 << 3) }, | |
162 | { 9600, (1 << 4), (7 << 3) }, | |
163 | { 5513, (2 << 4), (0 << 3) }, /* Actually 5512.5 */ | |
164 | { 11025, (2 << 4), (1 << 3) }, | |
165 | { 18900, (2 << 4), (2 << 3) }, | |
166 | { 22050, (2 << 4), (3 << 3) }, | |
167 | { 37800, (2 << 4), (4 << 3) }, | |
168 | { 44100, (2 << 4), (5 << 3) }, | |
169 | { 33075, (2 << 4), (6 << 3) }, | |
170 | { 6615, (2 << 4), (7 << 3) }, | |
171 | { 0, 0, 0} | |
172 | }; | |
173 | ||
174 | #define CS4215_HPF (1<<7) /* High Pass Filter, 1: Enabled */ | |
175 | ||
176 | #define CS4215_12_MASK 0xfcbf /* Mask off reserved bits in slot 1 & 2 */ | |
177 | ||
178 | /* Time Slot 3, Serial Port Control register */ | |
179 | #define CS4215_XEN (1<<0) /* 0: Enable serial output */ | |
180 | #define CS4215_XCLK (1<<1) /* 1: Master mode: Generate SCLK */ | |
181 | #define CS4215_BSEL_64 (0<<2) /* Bitrate: 64 bits per frame */ | |
182 | #define CS4215_BSEL_128 (1<<2) | |
183 | #define CS4215_BSEL_256 (2<<2) | |
184 | #define CS4215_MCK_MAST (0<<4) /* Master clock */ | |
185 | #define CS4215_MCK_XTL1 (1<<4) /* 24.576 MHz clock source */ | |
186 | #define CS4215_MCK_XTL2 (2<<4) /* 16.9344 MHz clock source */ | |
187 | #define CS4215_MCK_CLK1 (3<<4) /* Clockin, 256 x Fs */ | |
188 | #define CS4215_MCK_CLK2 (4<<4) /* Clockin, see DFR */ | |
189 | ||
190 | /* Time Slot 4, Test Register */ | |
191 | #define CS4215_DAD (1<<0) /* 0:Digital-Dig loop, 1:Dig-Analog-Dig loop */ | |
192 | #define CS4215_ENL (1<<1) /* Enable Loopback Testing */ | |
193 | ||
194 | /* Time Slot 5, Parallel Port Register */ | |
195 | /* Read only here and the same as the in data mode */ | |
196 | ||
197 | /* Time Slot 6, Reserved */ | |
198 | ||
199 | /* Time Slot 7, Version Register */ | |
200 | #define CS4215_VERSION_MASK 0xf /* Known versions 0/C, 1/D, 2/E */ | |
201 | ||
202 | /* Time Slot 8, Reserved */ | |
203 | ||
204 | /* | |
205 | * Data mode | |
206 | */ | |
207 | /* Time Slot 1-2: Left Channel Data, 2-3: Right Channel Data */ | |
208 | ||
209 | /* Time Slot 5, Output Setting */ | |
210 | #define CS4215_LO(v) v /* Left Output Attenuation 0x3f: -94.5 dB */ | |
211 | #define CS4215_LE (1<<6) /* Line Out Enable */ | |
212 | #define CS4215_HE (1<<7) /* Headphone Enable */ | |
213 | ||
214 | /* Time Slot 6, Output Setting */ | |
215 | #define CS4215_RO(v) v /* Right Output Attenuation 0x3f: -94.5 dB */ | |
216 | #define CS4215_SE (1<<6) /* Speaker Enable */ | |
217 | #define CS4215_ADI (1<<7) /* A/D Data Invalid: Busy in calibration */ | |
218 | ||
219 | /* Time Slot 7, Input Setting */ | |
220 | #define CS4215_LG(v) v /* Left Gain Setting 0xf: 22.5 dB */ | |
221 | #define CS4215_IS (1<<4) /* Input Select: 1=Microphone, 0=Line */ | |
222 | #define CS4215_OVR (1<<5) /* 1: Overrange condition occurred */ | |
223 | #define CS4215_PIO0 (1<<6) /* Parallel I/O 0 */ | |
224 | #define CS4215_PIO1 (1<<7) | |
225 | ||
226 | /* Time Slot 8, Input Setting */ | |
227 | #define CS4215_RG(v) v /* Right Gain Setting 0xf: 22.5 dB */ | |
228 | #define CS4215_MA(v) (v<<4) /* Monitor Path Attenuation 0xf: mute */ | |
229 | ||
230 | /*************************************************************************** | |
231 | DBRI specific definitions and structures | |
232 | ****************************************************************************/ | |
233 | ||
234 | /* DBRI main registers */ | |
235 | #define REG0 0x00UL /* Status and Control */ | |
236 | #define REG1 0x04UL /* Mode and Interrupt */ | |
237 | #define REG2 0x08UL /* Parallel IO */ | |
238 | #define REG3 0x0cUL /* Test */ | |
239 | #define REG8 0x20UL /* Command Queue Pointer */ | |
240 | #define REG9 0x24UL /* Interrupt Queue Pointer */ | |
241 | ||
242 | #define DBRI_NO_CMDS 64 | |
1bd9debf TI |
243 | #define DBRI_INT_BLK 64 |
244 | #define DBRI_NO_DESCS 64 | |
245 | #define DBRI_NO_PIPES 32 | |
470f1f1a | 246 | #define DBRI_MAX_PIPE (DBRI_NO_PIPES - 1) |
1bd9debf TI |
247 | |
248 | #define DBRI_REC 0 | |
249 | #define DBRI_PLAY 1 | |
250 | #define DBRI_NO_STREAMS 2 | |
251 | ||
252 | /* One transmit/receive descriptor */ | |
c2735446 | 253 | /* When ba != 0 descriptor is used */ |
1bd9debf TI |
254 | struct dbri_mem { |
255 | volatile __u32 word1; | |
16727d94 KH |
256 | __u32 ba; /* Transmit/Receive Buffer Address */ |
257 | __u32 nda; /* Next Descriptor Address */ | |
1bd9debf TI |
258 | volatile __u32 word4; |
259 | }; | |
260 | ||
261 | /* This structure is in a DMA region where it can accessed by both | |
262 | * the CPU and the DBRI | |
263 | */ | |
264 | struct dbri_dma { | |
1be54c82 | 265 | s32 cmd[DBRI_NO_CMDS]; /* Place for commands */ |
6fb98280 | 266 | volatile s32 intr[DBRI_INT_BLK]; /* Interrupt field */ |
1bd9debf TI |
267 | struct dbri_mem desc[DBRI_NO_DESCS]; /* Xmit/receive descriptors */ |
268 | }; | |
269 | ||
270 | #define dbri_dma_off(member, elem) \ | |
271 | ((u32)(unsigned long) \ | |
272 | (&(((struct dbri_dma *)0)->member[elem]))) | |
273 | ||
274 | enum in_or_out { PIPEinput, PIPEoutput }; | |
275 | ||
276 | struct dbri_pipe { | |
277 | u32 sdp; /* SDP command word */ | |
1bd9debf | 278 | int nextpipe; /* Next pipe in linked list */ |
1bd9debf TI |
279 | int length; /* Length of timeslot (bits) */ |
280 | int first_desc; /* Index of first descriptor */ | |
281 | int desc; /* Index of active descriptor */ | |
282 | volatile __u32 *recv_fixed_ptr; /* Ptr to receive fixed data */ | |
283 | }; | |
284 | ||
1bd9debf | 285 | /* Per stream (playback or record) information */ |
475675d6 TI |
286 | struct dbri_streaminfo { |
287 | struct snd_pcm_substream *substream; | |
1bd9debf | 288 | u32 dvma_buffer; /* Device view of Alsa DMA buffer */ |
1bd9debf TI |
289 | int size; /* Size of DMA buffer */ |
290 | size_t offset; /* offset in user buffer */ | |
291 | int pipe; /* Data pipe used */ | |
292 | int left_gain; /* mixer elements */ | |
293 | int right_gain; | |
475675d6 | 294 | }; |
1bd9debf TI |
295 | |
296 | /* This structure holds the information for both chips (DBRI & CS4215) */ | |
475675d6 TI |
297 | struct snd_dbri { |
298 | struct snd_card *card; /* ALSA card */ | |
1bd9debf TI |
299 | |
300 | int regs_size, irq; /* Needed for unload */ | |
301 | struct sbus_dev *sdev; /* SBUS device info */ | |
302 | spinlock_t lock; | |
303 | ||
16727d94 | 304 | struct dbri_dma *dma; /* Pointer to our DMA block */ |
1bd9debf TI |
305 | u32 dma_dvma; /* DBRI visible DMA address */ |
306 | ||
307 | void __iomem *regs; /* dbri HW regs */ | |
1bd9debf | 308 | int dbri_irqp; /* intr queue pointer */ |
1bd9debf TI |
309 | |
310 | struct dbri_pipe pipes[DBRI_NO_PIPES]; /* DBRI's 32 data pipes */ | |
c2735446 | 311 | int next_desc[DBRI_NO_DESCS]; /* Index of next desc, or -1 */ |
1be54c82 KH |
312 | spinlock_t cmdlock; /* Protects cmd queue accesses */ |
313 | s32 *cmdptr; /* Pointer to the last queued cmd */ | |
1bd9debf | 314 | |
1bd9debf TI |
315 | int chi_bpf; |
316 | ||
317 | struct cs4215 mm; /* mmcodec special info */ | |
318 | /* per stream (playback/record) info */ | |
319 | struct dbri_streaminfo stream_info[DBRI_NO_STREAMS]; | |
320 | ||
321 | struct snd_dbri *next; | |
475675d6 | 322 | }; |
1bd9debf | 323 | |
1bd9debf TI |
324 | #define DBRI_MAX_VOLUME 63 /* Output volume */ |
325 | #define DBRI_MAX_GAIN 15 /* Input gain */ | |
1bd9debf TI |
326 | |
327 | /* DBRI Reg0 - Status Control Register - defines. (Page 17) */ | |
328 | #define D_P (1<<15) /* Program command & queue pointer valid */ | |
329 | #define D_G (1<<14) /* Allow 4-Word SBus Burst */ | |
330 | #define D_S (1<<13) /* Allow 16-Word SBus Burst */ | |
331 | #define D_E (1<<12) /* Allow 8-Word SBus Burst */ | |
332 | #define D_X (1<<7) /* Sanity Timer Disable */ | |
333 | #define D_T (1<<6) /* Permit activation of the TE interface */ | |
334 | #define D_N (1<<5) /* Permit activation of the NT interface */ | |
335 | #define D_C (1<<4) /* Permit activation of the CHI interface */ | |
336 | #define D_F (1<<3) /* Force Sanity Timer Time-Out */ | |
337 | #define D_D (1<<2) /* Disable Master Mode */ | |
338 | #define D_H (1<<1) /* Halt for Analysis */ | |
339 | #define D_R (1<<0) /* Soft Reset */ | |
340 | ||
341 | /* DBRI Reg1 - Mode and Interrupt Register - defines. (Page 18) */ | |
342 | #define D_LITTLE_END (1<<8) /* Byte Order */ | |
343 | #define D_BIG_END (0<<8) /* Byte Order */ | |
344 | #define D_MRR (1<<4) /* Multiple Error Ack on SBus (readonly) */ | |
345 | #define D_MLE (1<<3) /* Multiple Late Error on SBus (readonly) */ | |
346 | #define D_LBG (1<<2) /* Lost Bus Grant on SBus (readonly) */ | |
347 | #define D_MBE (1<<1) /* Burst Error on SBus (readonly) */ | |
348 | #define D_IR (1<<0) /* Interrupt Indicator (readonly) */ | |
349 | ||
350 | /* DBRI Reg2 - Parallel IO Register - defines. (Page 18) */ | |
351 | #define D_ENPIO3 (1<<7) /* Enable Pin 3 */ | |
352 | #define D_ENPIO2 (1<<6) /* Enable Pin 2 */ | |
353 | #define D_ENPIO1 (1<<5) /* Enable Pin 1 */ | |
354 | #define D_ENPIO0 (1<<4) /* Enable Pin 0 */ | |
355 | #define D_ENPIO (0xf0) /* Enable all the pins */ | |
356 | #define D_PIO3 (1<<3) /* Pin 3: 1: Data mode, 0: Ctrl mode */ | |
357 | #define D_PIO2 (1<<2) /* Pin 2: 1: Onboard PDN */ | |
358 | #define D_PIO1 (1<<1) /* Pin 1: 0: Reset */ | |
359 | #define D_PIO0 (1<<0) /* Pin 0: 1: Speakerbox PDN */ | |
360 | ||
361 | /* DBRI Commands (Page 20) */ | |
362 | #define D_WAIT 0x0 /* Stop execution */ | |
363 | #define D_PAUSE 0x1 /* Flush long pipes */ | |
364 | #define D_JUMP 0x2 /* New command queue */ | |
365 | #define D_IIQ 0x3 /* Initialize Interrupt Queue */ | |
366 | #define D_REX 0x4 /* Report command execution via interrupt */ | |
367 | #define D_SDP 0x5 /* Setup Data Pipe */ | |
368 | #define D_CDP 0x6 /* Continue Data Pipe (reread NULL Pointer) */ | |
369 | #define D_DTS 0x7 /* Define Time Slot */ | |
370 | #define D_SSP 0x8 /* Set short Data Pipe */ | |
371 | #define D_CHI 0x9 /* Set CHI Global Mode */ | |
372 | #define D_NT 0xa /* NT Command */ | |
373 | #define D_TE 0xb /* TE Command */ | |
374 | #define D_CDEC 0xc /* Codec setup */ | |
375 | #define D_TEST 0xd /* No comment */ | |
376 | #define D_CDM 0xe /* CHI Data mode command */ | |
377 | ||
378 | /* Special bits for some commands */ | |
379 | #define D_PIPE(v) ((v)<<0) /* Pipe Nr: 0-15 long, 16-21 short */ | |
380 | ||
381 | /* Setup Data Pipe */ | |
382 | /* IRM */ | |
383 | #define D_SDP_2SAME (1<<18) /* Report 2nd time in a row value rcvd */ | |
384 | #define D_SDP_CHANGE (2<<18) /* Report any changes */ | |
385 | #define D_SDP_EVERY (3<<18) /* Report any changes */ | |
386 | #define D_SDP_EOL (1<<17) /* EOL interrupt enable */ | |
387 | #define D_SDP_IDLE (1<<16) /* HDLC idle interrupt enable */ | |
388 | ||
389 | /* Pipe data MODE */ | |
390 | #define D_SDP_MEM (0<<13) /* To/from memory */ | |
391 | #define D_SDP_HDLC (2<<13) | |
392 | #define D_SDP_HDLC_D (3<<13) /* D Channel (prio control) */ | |
393 | #define D_SDP_SER (4<<13) /* Serial to serial */ | |
394 | #define D_SDP_FIXED (6<<13) /* Short only */ | |
395 | #define D_SDP_MODE(v) ((v)&(7<<13)) | |
396 | ||
397 | #define D_SDP_TO_SER (1<<12) /* Direction */ | |
398 | #define D_SDP_FROM_SER (0<<12) /* Direction */ | |
399 | #define D_SDP_MSB (1<<11) /* Bit order within Byte */ | |
400 | #define D_SDP_LSB (0<<11) /* Bit order within Byte */ | |
401 | #define D_SDP_P (1<<10) /* Pointer Valid */ | |
402 | #define D_SDP_A (1<<8) /* Abort */ | |
403 | #define D_SDP_C (1<<7) /* Clear */ | |
404 | ||
405 | /* Define Time Slot */ | |
406 | #define D_DTS_VI (1<<17) /* Valid Input Time-Slot Descriptor */ | |
407 | #define D_DTS_VO (1<<16) /* Valid Output Time-Slot Descriptor */ | |
408 | #define D_DTS_INS (1<<15) /* Insert Time Slot */ | |
409 | #define D_DTS_DEL (0<<15) /* Delete Time Slot */ | |
410 | #define D_DTS_PRVIN(v) ((v)<<10) /* Previous In Pipe */ | |
411 | #define D_DTS_PRVOUT(v) ((v)<<5) /* Previous Out Pipe */ | |
412 | ||
413 | /* Time Slot defines */ | |
414 | #define D_TS_LEN(v) ((v)<<24) /* Number of bits in this time slot */ | |
415 | #define D_TS_CYCLE(v) ((v)<<14) /* Bit Count at start of TS */ | |
416 | #define D_TS_DI (1<<13) /* Data Invert */ | |
417 | #define D_TS_1CHANNEL (0<<10) /* Single Channel / Normal mode */ | |
418 | #define D_TS_MONITOR (2<<10) /* Monitor pipe */ | |
419 | #define D_TS_NONCONTIG (3<<10) /* Non contiguous mode */ | |
420 | #define D_TS_ANCHOR (7<<10) /* Starting short pipes */ | |
421 | #define D_TS_MON(v) ((v)<<5) /* Monitor Pipe */ | |
422 | #define D_TS_NEXT(v) ((v)<<0) /* Pipe Nr: 0-15 long, 16-21 short */ | |
423 | ||
424 | /* Concentration Highway Interface Modes */ | |
425 | #define D_CHI_CHICM(v) ((v)<<16) /* Clock mode */ | |
426 | #define D_CHI_IR (1<<15) /* Immediate Interrupt Report */ | |
427 | #define D_CHI_EN (1<<14) /* CHIL Interrupt enabled */ | |
428 | #define D_CHI_OD (1<<13) /* Open Drain Enable */ | |
429 | #define D_CHI_FE (1<<12) /* Sample CHIFS on Rising Frame Edge */ | |
430 | #define D_CHI_FD (1<<11) /* Frame Drive */ | |
431 | #define D_CHI_BPF(v) ((v)<<0) /* Bits per Frame */ | |
432 | ||
433 | /* NT: These are here for completeness */ | |
434 | #define D_NT_FBIT (1<<17) /* Frame Bit */ | |
435 | #define D_NT_NBF (1<<16) /* Number of bad frames to loose framing */ | |
436 | #define D_NT_IRM_IMM (1<<15) /* Interrupt Report & Mask: Immediate */ | |
437 | #define D_NT_IRM_EN (1<<14) /* Interrupt Report & Mask: Enable */ | |
438 | #define D_NT_ISNT (1<<13) /* Configfure interface as NT */ | |
439 | #define D_NT_FT (1<<12) /* Fixed Timing */ | |
440 | #define D_NT_EZ (1<<11) /* Echo Channel is Zeros */ | |
441 | #define D_NT_IFA (1<<10) /* Inhibit Final Activation */ | |
442 | #define D_NT_ACT (1<<9) /* Activate Interface */ | |
443 | #define D_NT_MFE (1<<8) /* Multiframe Enable */ | |
444 | #define D_NT_RLB(v) ((v)<<5) /* Remote Loopback */ | |
445 | #define D_NT_LLB(v) ((v)<<2) /* Local Loopback */ | |
446 | #define D_NT_FACT (1<<1) /* Force Activation */ | |
447 | #define D_NT_ABV (1<<0) /* Activate Bipolar Violation */ | |
448 | ||
449 | /* Codec Setup */ | |
450 | #define D_CDEC_CK(v) ((v)<<24) /* Clock Select */ | |
451 | #define D_CDEC_FED(v) ((v)<<12) /* FSCOD Falling Edge Delay */ | |
452 | #define D_CDEC_RED(v) ((v)<<0) /* FSCOD Rising Edge Delay */ | |
453 | ||
454 | /* Test */ | |
455 | #define D_TEST_RAM(v) ((v)<<16) /* RAM Pointer */ | |
456 | #define D_TEST_SIZE(v) ((v)<<11) /* */ | |
457 | #define D_TEST_ROMONOFF 0x5 /* Toggle ROM opcode monitor on/off */ | |
458 | #define D_TEST_PROC 0x6 /* MicroProcessor test */ | |
459 | #define D_TEST_SER 0x7 /* Serial-Controller test */ | |
460 | #define D_TEST_RAMREAD 0x8 /* Copy from Ram to system memory */ | |
461 | #define D_TEST_RAMWRITE 0x9 /* Copy into Ram from system memory */ | |
462 | #define D_TEST_RAMBIST 0xa /* RAM Built-In Self Test */ | |
463 | #define D_TEST_MCBIST 0xb /* Microcontroller Built-In Self Test */ | |
464 | #define D_TEST_DUMP 0xe /* ROM Dump */ | |
465 | ||
466 | /* CHI Data Mode */ | |
467 | #define D_CDM_THI (1<<8) /* Transmit Data on CHIDR Pin */ | |
468 | #define D_CDM_RHI (1<<7) /* Receive Data on CHIDX Pin */ | |
469 | #define D_CDM_RCE (1<<6) /* Receive on Rising Edge of CHICK */ | |
470 | #define D_CDM_XCE (1<<2) /* Transmit Data on Rising Edge of CHICK */ | |
471 | #define D_CDM_XEN (1<<1) /* Transmit Highway Enable */ | |
472 | #define D_CDM_REN (1<<0) /* Receive Highway Enable */ | |
473 | ||
474 | /* The Interrupts */ | |
475 | #define D_INTR_BRDY 1 /* Buffer Ready for processing */ | |
476 | #define D_INTR_MINT 2 /* Marked Interrupt in RD/TD */ | |
477 | #define D_INTR_IBEG 3 /* Flag to idle transition detected (HDLC) */ | |
478 | #define D_INTR_IEND 4 /* Idle to flag transition detected (HDLC) */ | |
479 | #define D_INTR_EOL 5 /* End of List */ | |
480 | #define D_INTR_CMDI 6 /* Command has bean read */ | |
481 | #define D_INTR_XCMP 8 /* Transmission of frame complete */ | |
482 | #define D_INTR_SBRI 9 /* BRI status change info */ | |
483 | #define D_INTR_FXDT 10 /* Fixed data change */ | |
484 | #define D_INTR_CHIL 11 /* CHI lost frame sync (channel 36 only) */ | |
485 | #define D_INTR_COLL 11 /* Unrecoverable D-Channel collision */ | |
486 | #define D_INTR_DBYT 12 /* Dropped by frame slip */ | |
487 | #define D_INTR_RBYT 13 /* Repeated by frame slip */ | |
488 | #define D_INTR_LINT 14 /* Lost Interrupt */ | |
489 | #define D_INTR_UNDR 15 /* DMA underrun */ | |
490 | ||
491 | #define D_INTR_TE 32 | |
492 | #define D_INTR_NT 34 | |
493 | #define D_INTR_CHI 36 | |
494 | #define D_INTR_CMD 38 | |
495 | ||
496 | #define D_INTR_GETCHAN(v) (((v)>>24) & 0x3f) | |
497 | #define D_INTR_GETCODE(v) (((v)>>20) & 0xf) | |
498 | #define D_INTR_GETCMD(v) (((v)>>16) & 0xf) | |
499 | #define D_INTR_GETVAL(v) ((v) & 0xffff) | |
500 | #define D_INTR_GETRVAL(v) ((v) & 0xfffff) | |
501 | ||
502 | #define D_P_0 0 /* TE receive anchor */ | |
503 | #define D_P_1 1 /* TE transmit anchor */ | |
504 | #define D_P_2 2 /* NT transmit anchor */ | |
505 | #define D_P_3 3 /* NT receive anchor */ | |
506 | #define D_P_4 4 /* CHI send data */ | |
507 | #define D_P_5 5 /* CHI receive data */ | |
508 | #define D_P_6 6 /* */ | |
509 | #define D_P_7 7 /* */ | |
510 | #define D_P_8 8 /* */ | |
511 | #define D_P_9 9 /* */ | |
512 | #define D_P_10 10 /* */ | |
513 | #define D_P_11 11 /* */ | |
514 | #define D_P_12 12 /* */ | |
515 | #define D_P_13 13 /* */ | |
516 | #define D_P_14 14 /* */ | |
517 | #define D_P_15 15 /* */ | |
518 | #define D_P_16 16 /* CHI anchor pipe */ | |
519 | #define D_P_17 17 /* CHI send */ | |
520 | #define D_P_18 18 /* CHI receive */ | |
521 | #define D_P_19 19 /* CHI receive */ | |
522 | #define D_P_20 20 /* CHI receive */ | |
523 | #define D_P_21 21 /* */ | |
524 | #define D_P_22 22 /* */ | |
525 | #define D_P_23 23 /* */ | |
526 | #define D_P_24 24 /* */ | |
527 | #define D_P_25 25 /* */ | |
528 | #define D_P_26 26 /* */ | |
529 | #define D_P_27 27 /* */ | |
530 | #define D_P_28 28 /* */ | |
531 | #define D_P_29 29 /* */ | |
532 | #define D_P_30 30 /* */ | |
533 | #define D_P_31 31 /* */ | |
534 | ||
535 | /* Transmit descriptor defines */ | |
536 | #define DBRI_TD_F (1<<31) /* End of Frame */ | |
537 | #define DBRI_TD_D (1<<30) /* Do not append CRC */ | |
538 | #define DBRI_TD_CNT(v) ((v)<<16) /* Number of valid bytes in the buffer */ | |
539 | #define DBRI_TD_B (1<<15) /* Final interrupt */ | |
540 | #define DBRI_TD_M (1<<14) /* Marker interrupt */ | |
541 | #define DBRI_TD_I (1<<13) /* Transmit Idle Characters */ | |
542 | #define DBRI_TD_FCNT(v) (v) /* Flag Count */ | |
543 | #define DBRI_TD_UNR (1<<3) /* Underrun: transmitter is out of data */ | |
544 | #define DBRI_TD_ABT (1<<2) /* Abort: frame aborted */ | |
545 | #define DBRI_TD_TBC (1<<0) /* Transmit buffer Complete */ | |
546 | #define DBRI_TD_STATUS(v) ((v)&0xff) /* Transmit status */ | |
547 | /* Maximum buffer size per TD: almost 8Kb */ | |
1be54c82 | 548 | #define DBRI_TD_MAXCNT ((1 << 13) - 4) |
1bd9debf TI |
549 | |
550 | /* Receive descriptor defines */ | |
551 | #define DBRI_RD_F (1<<31) /* End of Frame */ | |
552 | #define DBRI_RD_C (1<<30) /* Completed buffer */ | |
553 | #define DBRI_RD_B (1<<15) /* Final interrupt */ | |
554 | #define DBRI_RD_M (1<<14) /* Marker interrupt */ | |
555 | #define DBRI_RD_BCNT(v) (v) /* Buffer size */ | |
556 | #define DBRI_RD_CRC (1<<7) /* 0: CRC is correct */ | |
557 | #define DBRI_RD_BBC (1<<6) /* 1: Bad Byte received */ | |
558 | #define DBRI_RD_ABT (1<<5) /* Abort: frame aborted */ | |
559 | #define DBRI_RD_OVRN (1<<3) /* Overrun: data lost */ | |
560 | #define DBRI_RD_STATUS(v) ((v)&0xff) /* Receive status */ | |
561 | #define DBRI_RD_CNT(v) (((v)>>16)&0x1fff) /* Valid bytes in the buffer */ | |
562 | ||
563 | /* stream_info[] access */ | |
564 | /* Translate the ALSA direction into the array index */ | |
565 | #define DBRI_STREAMNO(substream) \ | |
566 | (substream->stream == \ | |
567 | SNDRV_PCM_STREAM_PLAYBACK? DBRI_PLAY: DBRI_REC) | |
568 | ||
569 | /* Return a pointer to dbri_streaminfo */ | |
570 | #define DBRI_STREAM(dbri, substream) &dbri->stream_info[DBRI_STREAMNO(substream)] | |
571 | ||
6581f4e7 | 572 | static struct snd_dbri *dbri_list; /* All DBRI devices */ |
1bd9debf TI |
573 | |
574 | /* | |
575 | * Short data pipes transmit LSB first. The CS4215 receives MSB first. Grrr. | |
576 | * So we have to reverse the bits. Note: not all bit lengths are supported | |
577 | */ | |
578 | static __u32 reverse_bytes(__u32 b, int len) | |
579 | { | |
580 | switch (len) { | |
581 | case 32: | |
582 | b = ((b & 0xffff0000) >> 16) | ((b & 0x0000ffff) << 16); | |
583 | case 16: | |
584 | b = ((b & 0xff00ff00) >> 8) | ((b & 0x00ff00ff) << 8); | |
585 | case 8: | |
586 | b = ((b & 0xf0f0f0f0) >> 4) | ((b & 0x0f0f0f0f) << 4); | |
587 | case 4: | |
588 | b = ((b & 0xcccccccc) >> 2) | ((b & 0x33333333) << 2); | |
589 | case 2: | |
590 | b = ((b & 0xaaaaaaaa) >> 1) | ((b & 0x55555555) << 1); | |
591 | case 1: | |
592 | case 0: | |
593 | break; | |
594 | default: | |
595 | printk(KERN_ERR "DBRI reverse_bytes: unsupported length\n"); | |
596 | }; | |
597 | ||
598 | return b; | |
599 | } | |
600 | ||
601 | /* | |
602 | **************************************************************************** | |
603 | ************** DBRI initialization and command synchronization ************* | |
604 | **************************************************************************** | |
605 | ||
606 | Commands are sent to the DBRI by building a list of them in memory, | |
607 | then writing the address of the first list item to DBRI register 8. | |
4338829e MH |
608 | The list is terminated with a WAIT command, which generates a |
609 | CPU interrupt to signal completion. | |
1bd9debf TI |
610 | |
611 | Since the DBRI can run in parallel with the CPU, several means of | |
1be54c82 KH |
612 | synchronization present themselves. The method implemented here is only |
613 | to use the dbri_cmdwait() to wait for execution of batch of sent commands. | |
1bd9debf | 614 | |
1be54c82 KH |
615 | A circular command buffer is used here. A new command is being added |
616 | while other can be executed. The scheme works by adding two WAIT commands | |
617 | after each sent batch of commands. When the next batch is prepared it is | |
618 | added after the WAIT commands then the WAITs are replaced with single JUMP | |
619 | command to the new batch. The the DBRI is forced to reread the last WAIT | |
620 | command (replaced by the JUMP by then). If the DBRI is still executing | |
621 | previous commands the request to reread the WAIT command is ignored. | |
1bd9debf | 622 | |
1bd9debf | 623 | Every time a routine wants to write commands to the DBRI, it must |
1be54c82 KH |
624 | first call dbri_cmdlock() and get pointer to a free space in |
625 | dbri->dma->cmd buffer. After this, the commands can be written to | |
626 | the buffer, and dbri_cmdsend() is called with the final pointer value | |
627 | to send them to the DBRI. | |
1bd9debf TI |
628 | |
629 | */ | |
630 | ||
475675d6 | 631 | static void dbri_process_interrupt_buffer(struct snd_dbri * dbri); |
4338829e | 632 | |
4338829e | 633 | #define MAXLOOPS 10 |
1be54c82 KH |
634 | /* |
635 | * Wait for the current command string to execute | |
636 | */ | |
637 | static void dbri_cmdwait(struct snd_dbri *dbri) | |
1bd9debf | 638 | { |
4338829e MH |
639 | int maxloops = MAXLOOPS; |
640 | ||
4338829e | 641 | /* Delay if previous commands are still being processed */ |
1be54c82 | 642 | while ((--maxloops) > 0 && (sbus_readl(dbri->regs + REG0) & D_P)) |
4338829e | 643 | msleep_interruptible(1); |
1be54c82 | 644 | |
4338829e | 645 | if (maxloops == 0) { |
1be54c82 | 646 | printk(KERN_ERR "DBRI: Chip never completed command buffer\n"); |
4338829e MH |
647 | } else { |
648 | dprintk(D_CMD, "Chip completed command buffer (%d)\n", | |
649 | MAXLOOPS - maxloops - 1); | |
650 | } | |
1be54c82 KH |
651 | } |
652 | /* | |
653 | * Lock the command queue and returns pointer to a space for len cmd words | |
654 | * It locks the cmdlock spinlock. | |
655 | */ | |
656 | static s32 *dbri_cmdlock(struct snd_dbri * dbri, int len) | |
657 | { | |
658 | /* Space for 2 WAIT cmds (replaced later by 1 JUMP cmd) */ | |
659 | len += 2; | |
660 | spin_lock(&dbri->cmdlock); | |
661 | if (dbri->cmdptr - dbri->dma->cmd + len < DBRI_NO_CMDS - 2) | |
662 | return dbri->cmdptr + 2; | |
663 | else if (len < sbus_readl(dbri->regs + REG8) - dbri->dma_dvma) | |
664 | return dbri->dma->cmd; | |
665 | else | |
666 | printk(KERN_ERR "DBRI: no space for commands."); | |
4338829e | 667 | |
1be54c82 | 668 | return 0; |
1bd9debf TI |
669 | } |
670 | ||
1be54c82 KH |
671 | /* |
672 | * Send prepared cmd string. It works by writting a JMP cmd into | |
673 | * the last WAIT cmd and force DBRI to reread the cmd. | |
674 | * The JMP cmd points to the new cmd string. | |
675 | * It also releases the cmdlock spinlock. | |
676 | */ | |
677 | static void dbri_cmdsend(struct snd_dbri * dbri, s32 * cmd,int len) | |
1bd9debf | 678 | { |
1be54c82 KH |
679 | s32 *ptr; |
680 | s32 tmp, addr; | |
681 | static int wait_id = 0; | |
1bd9debf | 682 | |
1be54c82 KH |
683 | wait_id++; |
684 | wait_id &= 0xffff; /* restrict it to a 16 bit counter. */ | |
685 | *(cmd) = DBRI_CMD(D_WAIT, 1, wait_id); | |
686 | *(cmd+1) = DBRI_CMD(D_WAIT, 1, wait_id); | |
1bd9debf | 687 | |
1be54c82 KH |
688 | /* Replace the last command with JUMP */ |
689 | addr = dbri->dma_dvma + (cmd - len - dbri->dma->cmd) * sizeof(s32); | |
690 | *(dbri->cmdptr+1) = addr; | |
691 | *(dbri->cmdptr) = DBRI_CMD(D_JUMP, 0, 0); | |
1bd9debf | 692 | |
1be54c82 KH |
693 | #ifdef DBRI_DEBUG |
694 | if (cmd > dbri->cmdptr ) | |
695 | for (ptr = dbri->cmdptr; ptr < cmd+2; ptr++) { | |
696 | dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); | |
697 | } | |
698 | else { | |
699 | ptr = dbri->cmdptr; | |
700 | dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); | |
701 | ptr = dbri->cmdptr+1; | |
702 | dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); | |
703 | for (ptr = dbri->dma->cmd; ptr < cmd+2; ptr++) { | |
704 | dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); | |
705 | } | |
706 | } | |
707 | #endif | |
4338829e | 708 | |
1be54c82 KH |
709 | /* Reread the last command */ |
710 | tmp = sbus_readl(dbri->regs + REG0); | |
711 | tmp |= D_P; | |
712 | sbus_writel(tmp, dbri->regs + REG0); | |
1bd9debf | 713 | |
1be54c82 KH |
714 | dbri->cmdptr = cmd; |
715 | spin_unlock(&dbri->cmdlock); | |
1bd9debf TI |
716 | } |
717 | ||
718 | /* Lock must be held when calling this */ | |
475675d6 | 719 | static void dbri_reset(struct snd_dbri * dbri) |
1bd9debf TI |
720 | { |
721 | int i; | |
d1fdf07e | 722 | u32 tmp; |
1bd9debf TI |
723 | |
724 | dprintk(D_GEN, "reset 0:%x 2:%x 8:%x 9:%x\n", | |
725 | sbus_readl(dbri->regs + REG0), | |
726 | sbus_readl(dbri->regs + REG2), | |
727 | sbus_readl(dbri->regs + REG8), sbus_readl(dbri->regs + REG9)); | |
728 | ||
729 | sbus_writel(D_R, dbri->regs + REG0); /* Soft Reset */ | |
730 | for (i = 0; (sbus_readl(dbri->regs + REG0) & D_R) && i < 64; i++) | |
731 | udelay(10); | |
d1fdf07e KH |
732 | |
733 | /* A brute approach - DBRI falls back to working burst size by itself | |
734 | * On SS20 D_S does not work, so do not try so high. */ | |
735 | tmp = sbus_readl(dbri->regs + REG0); | |
736 | tmp |= D_G | D_E; | |
737 | tmp &= ~D_S; | |
738 | sbus_writel(tmp, dbri->regs + REG0); | |
1bd9debf TI |
739 | } |
740 | ||
741 | /* Lock must not be held before calling this */ | |
475675d6 | 742 | static void dbri_initialize(struct snd_dbri * dbri) |
1bd9debf | 743 | { |
1be54c82 | 744 | s32 *cmd; |
d1fdf07e | 745 | u32 dma_addr; |
1bd9debf TI |
746 | unsigned long flags; |
747 | int n; | |
748 | ||
749 | spin_lock_irqsave(&dbri->lock, flags); | |
750 | ||
751 | dbri_reset(dbri); | |
752 | ||
1bd9debf TI |
753 | /* Initialize pipes */ |
754 | for (n = 0; n < DBRI_NO_PIPES; n++) | |
755 | dbri->pipes[n].desc = dbri->pipes[n].first_desc = -1; | |
756 | ||
1be54c82 | 757 | spin_lock_init(&dbri->cmdlock); |
1bd9debf | 758 | /* |
6fb98280 | 759 | * Initialize the interrupt ringbuffer. |
1bd9debf TI |
760 | */ |
761 | dma_addr = dbri->dma_dvma + dbri_dma_off(intr, 0); | |
6fb98280 KH |
762 | dbri->dma->intr[0] = dma_addr; |
763 | dbri->dbri_irqp = 1; | |
764 | /* | |
765 | * Set up the interrupt queue | |
766 | */ | |
1be54c82 KH |
767 | spin_lock(&dbri->cmdlock); |
768 | cmd = dbri->cmdptr = dbri->dma->cmd; | |
1bd9debf TI |
769 | *(cmd++) = DBRI_CMD(D_IIQ, 0, 0); |
770 | *(cmd++) = dma_addr; | |
1be54c82 KH |
771 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
772 | dbri->cmdptr = cmd; | |
773 | *(cmd++) = DBRI_CMD(D_WAIT, 1, 0); | |
774 | *(cmd++) = DBRI_CMD(D_WAIT, 1, 0); | |
775 | dma_addr = dbri->dma_dvma + dbri_dma_off(cmd, 0); | |
776 | sbus_writel(dma_addr, dbri->regs + REG8); | |
777 | spin_unlock(&dbri->cmdlock); | |
778 | dbri_cmdwait(dbri); | |
1bd9debf | 779 | |
1bd9debf TI |
780 | spin_unlock_irqrestore(&dbri->lock, flags); |
781 | } | |
782 | ||
783 | /* | |
784 | **************************************************************************** | |
785 | ************************** DBRI data pipe management *********************** | |
786 | **************************************************************************** | |
787 | ||
788 | While DBRI control functions use the command and interrupt buffers, the | |
789 | main data path takes the form of data pipes, which can be short (command | |
790 | and interrupt driven), or long (attached to DMA buffers). These functions | |
791 | provide a rudimentary means of setting up and managing the DBRI's pipes, | |
792 | but the calling functions have to make sure they respect the pipes' linked | |
793 | list ordering, among other things. The transmit and receive functions | |
794 | here interface closely with the transmit and receive interrupt code. | |
795 | ||
796 | */ | |
475675d6 | 797 | static int pipe_active(struct snd_dbri * dbri, int pipe) |
1bd9debf TI |
798 | { |
799 | return ((pipe >= 0) && (dbri->pipes[pipe].desc != -1)); | |
800 | } | |
801 | ||
802 | /* reset_pipe(dbri, pipe) | |
803 | * | |
804 | * Called on an in-use pipe to clear anything being transmitted or received | |
805 | * Lock must be held before calling this. | |
806 | */ | |
475675d6 | 807 | static void reset_pipe(struct snd_dbri * dbri, int pipe) |
1bd9debf TI |
808 | { |
809 | int sdp; | |
810 | int desc; | |
1be54c82 | 811 | s32 *cmd; |
1bd9debf | 812 | |
470f1f1a | 813 | if (pipe < 0 || pipe > DBRI_MAX_PIPE) { |
4338829e | 814 | printk(KERN_ERR "DBRI: reset_pipe called with illegal pipe number\n"); |
1bd9debf TI |
815 | return; |
816 | } | |
817 | ||
818 | sdp = dbri->pipes[pipe].sdp; | |
819 | if (sdp == 0) { | |
4338829e | 820 | printk(KERN_ERR "DBRI: reset_pipe called on uninitialized pipe\n"); |
1bd9debf TI |
821 | return; |
822 | } | |
823 | ||
1be54c82 | 824 | cmd = dbri_cmdlock(dbri, 3); |
1bd9debf TI |
825 | *(cmd++) = DBRI_CMD(D_SDP, 0, sdp | D_SDP_C | D_SDP_P); |
826 | *(cmd++) = 0; | |
1be54c82 KH |
827 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
828 | dbri_cmdsend(dbri, cmd, 3); | |
1bd9debf TI |
829 | |
830 | desc = dbri->pipes[pipe].first_desc; | |
1be54c82 KH |
831 | if ( desc >= 0) |
832 | do { | |
833 | dbri->dma->desc[desc].nda = dbri->dma->desc[desc].ba = 0; | |
834 | desc = dbri->next_desc[desc]; | |
835 | } while (desc != -1 && desc != dbri->pipes[pipe].first_desc); | |
1bd9debf TI |
836 | |
837 | dbri->pipes[pipe].desc = -1; | |
838 | dbri->pipes[pipe].first_desc = -1; | |
839 | } | |
840 | ||
475675d6 | 841 | static void setup_pipe(struct snd_dbri * dbri, int pipe, int sdp) |
1bd9debf | 842 | { |
470f1f1a | 843 | if (pipe < 0 || pipe > DBRI_MAX_PIPE) { |
4338829e | 844 | printk(KERN_ERR "DBRI: setup_pipe called with illegal pipe number\n"); |
1bd9debf TI |
845 | return; |
846 | } | |
847 | ||
848 | if ((sdp & 0xf800) != sdp) { | |
4338829e | 849 | printk(KERN_ERR "DBRI: setup_pipe called with strange SDP value\n"); |
1bd9debf TI |
850 | /* sdp &= 0xf800; */ |
851 | } | |
852 | ||
853 | /* If this is a fixed receive pipe, arrange for an interrupt | |
854 | * every time its data changes | |
855 | */ | |
856 | if (D_SDP_MODE(sdp) == D_SDP_FIXED && !(sdp & D_SDP_TO_SER)) | |
857 | sdp |= D_SDP_CHANGE; | |
858 | ||
859 | sdp |= D_PIPE(pipe); | |
860 | dbri->pipes[pipe].sdp = sdp; | |
861 | dbri->pipes[pipe].desc = -1; | |
862 | dbri->pipes[pipe].first_desc = -1; | |
1bd9debf TI |
863 | |
864 | reset_pipe(dbri, pipe); | |
865 | } | |
866 | ||
475675d6 | 867 | static void link_time_slot(struct snd_dbri * dbri, int pipe, |
294a30dc | 868 | int prevpipe, int nextpipe, |
1bd9debf TI |
869 | int length, int cycle) |
870 | { | |
1be54c82 | 871 | s32 *cmd; |
1bd9debf | 872 | int val; |
1bd9debf | 873 | |
294a30dc KH |
874 | if (pipe < 0 || pipe > DBRI_MAX_PIPE |
875 | || prevpipe < 0 || prevpipe > DBRI_MAX_PIPE | |
876 | || nextpipe < 0 || nextpipe > DBRI_MAX_PIPE) { | |
4338829e MH |
877 | printk(KERN_ERR |
878 | "DBRI: link_time_slot called with illegal pipe number\n"); | |
1bd9debf TI |
879 | return; |
880 | } | |
881 | ||
294a30dc KH |
882 | if (dbri->pipes[pipe].sdp == 0 |
883 | || dbri->pipes[prevpipe].sdp == 0 | |
884 | || dbri->pipes[nextpipe].sdp == 0) { | |
4338829e | 885 | printk(KERN_ERR "DBRI: link_time_slot called on uninitialized pipe\n"); |
1bd9debf TI |
886 | return; |
887 | } | |
888 | ||
294a30dc | 889 | dbri->pipes[prevpipe].nextpipe = pipe; |
1bd9debf | 890 | dbri->pipes[pipe].nextpipe = nextpipe; |
1bd9debf TI |
891 | dbri->pipes[pipe].length = length; |
892 | ||
1be54c82 | 893 | cmd = dbri_cmdlock(dbri, 4); |
1bd9debf | 894 | |
294a30dc KH |
895 | if (dbri->pipes[pipe].sdp & D_SDP_TO_SER) { |
896 | /* Deal with CHI special case: | |
897 | * "If transmission on edges 0 or 1 is desired, then cycle n | |
898 | * (where n = # of bit times per frame...) must be used." | |
899 | * - DBRI data sheet, page 11 | |
900 | */ | |
901 | if (prevpipe == 16 && cycle == 0) | |
902 | cycle = dbri->chi_bpf; | |
903 | ||
904 | val = D_DTS_VO | D_DTS_INS | D_DTS_PRVOUT(prevpipe) | pipe; | |
1bd9debf | 905 | *(cmd++) = DBRI_CMD(D_DTS, 0, val); |
294a30dc | 906 | *(cmd++) = 0; |
1bd9debf TI |
907 | *(cmd++) = |
908 | D_TS_LEN(length) | D_TS_CYCLE(cycle) | D_TS_NEXT(nextpipe); | |
1bd9debf | 909 | } else { |
294a30dc | 910 | val = D_DTS_VI | D_DTS_INS | D_DTS_PRVIN(prevpipe) | pipe; |
1bd9debf | 911 | *(cmd++) = DBRI_CMD(D_DTS, 0, val); |
1bd9debf TI |
912 | *(cmd++) = |
913 | D_TS_LEN(length) | D_TS_CYCLE(cycle) | D_TS_NEXT(nextpipe); | |
294a30dc | 914 | *(cmd++) = 0; |
1bd9debf | 915 | } |
1be54c82 | 916 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
1bd9debf | 917 | |
1be54c82 | 918 | dbri_cmdsend(dbri, cmd, 4); |
1bd9debf TI |
919 | } |
920 | ||
475675d6 | 921 | static void unlink_time_slot(struct snd_dbri * dbri, int pipe, |
1bd9debf TI |
922 | enum in_or_out direction, int prevpipe, |
923 | int nextpipe) | |
924 | { | |
1be54c82 | 925 | s32 *cmd; |
1bd9debf TI |
926 | int val; |
927 | ||
470f1f1a | 928 | if (pipe < 0 || pipe > DBRI_MAX_PIPE |
1be54c82 KH |
929 | || prevpipe < 0 || prevpipe > DBRI_MAX_PIPE |
930 | || nextpipe < 0 || nextpipe > DBRI_MAX_PIPE) { | |
4338829e MH |
931 | printk(KERN_ERR |
932 | "DBRI: unlink_time_slot called with illegal pipe number\n"); | |
1bd9debf TI |
933 | return; |
934 | } | |
935 | ||
1be54c82 | 936 | cmd = dbri_cmdlock(dbri, 4); |
1bd9debf TI |
937 | |
938 | if (direction == PIPEinput) { | |
939 | val = D_DTS_VI | D_DTS_DEL | D_DTS_PRVIN(prevpipe) | pipe; | |
940 | *(cmd++) = DBRI_CMD(D_DTS, 0, val); | |
941 | *(cmd++) = D_TS_NEXT(nextpipe); | |
942 | *(cmd++) = 0; | |
943 | } else { | |
944 | val = D_DTS_VO | D_DTS_DEL | D_DTS_PRVOUT(prevpipe) | pipe; | |
945 | *(cmd++) = DBRI_CMD(D_DTS, 0, val); | |
946 | *(cmd++) = 0; | |
947 | *(cmd++) = D_TS_NEXT(nextpipe); | |
948 | } | |
1be54c82 | 949 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
1bd9debf | 950 | |
1be54c82 | 951 | dbri_cmdsend(dbri, cmd, 4); |
1bd9debf TI |
952 | } |
953 | ||
954 | /* xmit_fixed() / recv_fixed() | |
955 | * | |
956 | * Transmit/receive data on a "fixed" pipe - i.e, one whose contents are not | |
957 | * expected to change much, and which we don't need to buffer. | |
958 | * The DBRI only interrupts us when the data changes (receive pipes), | |
959 | * or only changes the data when this function is called (transmit pipes). | |
960 | * Only short pipes (numbers 16-31) can be used in fixed data mode. | |
961 | * | |
962 | * These function operate on a 32-bit field, no matter how large | |
963 | * the actual time slot is. The interrupt handler takes care of bit | |
964 | * ordering and alignment. An 8-bit time slot will always end up | |
965 | * in the low-order 8 bits, filled either MSB-first or LSB-first, | |
966 | * depending on the settings passed to setup_pipe() | |
967 | */ | |
475675d6 | 968 | static void xmit_fixed(struct snd_dbri * dbri, int pipe, unsigned int data) |
1bd9debf | 969 | { |
1be54c82 | 970 | s32 *cmd; |
1bd9debf | 971 | |
470f1f1a | 972 | if (pipe < 16 || pipe > DBRI_MAX_PIPE) { |
4338829e | 973 | printk(KERN_ERR "DBRI: xmit_fixed: Illegal pipe number\n"); |
1bd9debf TI |
974 | return; |
975 | } | |
976 | ||
977 | if (D_SDP_MODE(dbri->pipes[pipe].sdp) == 0) { | |
4338829e | 978 | printk(KERN_ERR "DBRI: xmit_fixed: Uninitialized pipe %d\n", pipe); |
1bd9debf TI |
979 | return; |
980 | } | |
981 | ||
982 | if (D_SDP_MODE(dbri->pipes[pipe].sdp) != D_SDP_FIXED) { | |
4338829e | 983 | printk(KERN_ERR "DBRI: xmit_fixed: Non-fixed pipe %d\n", pipe); |
1bd9debf TI |
984 | return; |
985 | } | |
986 | ||
987 | if (!(dbri->pipes[pipe].sdp & D_SDP_TO_SER)) { | |
4338829e | 988 | printk(KERN_ERR "DBRI: xmit_fixed: Called on receive pipe %d\n", pipe); |
1bd9debf TI |
989 | return; |
990 | } | |
991 | ||
992 | /* DBRI short pipes always transmit LSB first */ | |
993 | ||
994 | if (dbri->pipes[pipe].sdp & D_SDP_MSB) | |
995 | data = reverse_bytes(data, dbri->pipes[pipe].length); | |
996 | ||
1be54c82 | 997 | cmd = dbri_cmdlock(dbri, 3); |
1bd9debf TI |
998 | |
999 | *(cmd++) = DBRI_CMD(D_SSP, 0, pipe); | |
1000 | *(cmd++) = data; | |
1be54c82 | 1001 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
1bd9debf | 1002 | |
1be54c82 KH |
1003 | dbri_cmdsend(dbri, cmd, 3); |
1004 | dbri_cmdwait(dbri); | |
1bd9debf TI |
1005 | } |
1006 | ||
475675d6 | 1007 | static void recv_fixed(struct snd_dbri * dbri, int pipe, volatile __u32 * ptr) |
1bd9debf | 1008 | { |
470f1f1a | 1009 | if (pipe < 16 || pipe > DBRI_MAX_PIPE) { |
4338829e | 1010 | printk(KERN_ERR "DBRI: recv_fixed called with illegal pipe number\n"); |
1bd9debf TI |
1011 | return; |
1012 | } | |
1013 | ||
1014 | if (D_SDP_MODE(dbri->pipes[pipe].sdp) != D_SDP_FIXED) { | |
4338829e | 1015 | printk(KERN_ERR "DBRI: recv_fixed called on non-fixed pipe %d\n", pipe); |
1bd9debf TI |
1016 | return; |
1017 | } | |
1018 | ||
1019 | if (dbri->pipes[pipe].sdp & D_SDP_TO_SER) { | |
4338829e | 1020 | printk(KERN_ERR "DBRI: recv_fixed called on transmit pipe %d\n", pipe); |
1bd9debf TI |
1021 | return; |
1022 | } | |
1023 | ||
1024 | dbri->pipes[pipe].recv_fixed_ptr = ptr; | |
1025 | } | |
1026 | ||
1027 | /* setup_descs() | |
1028 | * | |
1029 | * Setup transmit/receive data on a "long" pipe - i.e, one associated | |
1030 | * with a DMA buffer. | |
1031 | * | |
1032 | * Only pipe numbers 0-15 can be used in this mode. | |
1033 | * | |
1034 | * This function takes a stream number pointing to a data buffer, | |
1035 | * and work by building chains of descriptors which identify the | |
1036 | * data buffers. Buffers too large for a single descriptor will | |
1037 | * be spread across multiple descriptors. | |
1be54c82 KH |
1038 | * |
1039 | * All descriptors create a ring buffer. | |
1bd9debf | 1040 | */ |
475675d6 | 1041 | static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period) |
1bd9debf | 1042 | { |
475675d6 | 1043 | struct dbri_streaminfo *info = &dbri->stream_info[streamno]; |
1bd9debf TI |
1044 | __u32 dvma_buffer; |
1045 | int desc = 0; | |
1046 | int len; | |
1047 | int first_desc = -1; | |
1048 | int last_desc = -1; | |
1049 | ||
1050 | if (info->pipe < 0 || info->pipe > 15) { | |
4338829e | 1051 | printk(KERN_ERR "DBRI: setup_descs: Illegal pipe number\n"); |
1bd9debf TI |
1052 | return -2; |
1053 | } | |
1054 | ||
1055 | if (dbri->pipes[info->pipe].sdp == 0) { | |
4338829e | 1056 | printk(KERN_ERR "DBRI: setup_descs: Uninitialized pipe %d\n", |
1bd9debf TI |
1057 | info->pipe); |
1058 | return -2; | |
1059 | } | |
1060 | ||
1061 | dvma_buffer = info->dvma_buffer; | |
1062 | len = info->size; | |
1063 | ||
1064 | if (streamno == DBRI_PLAY) { | |
1065 | if (!(dbri->pipes[info->pipe].sdp & D_SDP_TO_SER)) { | |
4338829e | 1066 | printk(KERN_ERR "DBRI: setup_descs: Called on receive pipe %d\n", |
1bd9debf TI |
1067 | info->pipe); |
1068 | return -2; | |
1069 | } | |
1070 | } else { | |
1071 | if (dbri->pipes[info->pipe].sdp & D_SDP_TO_SER) { | |
4338829e MH |
1072 | printk(KERN_ERR |
1073 | "DBRI: setup_descs: Called on transmit pipe %d\n", | |
1bd9debf TI |
1074 | info->pipe); |
1075 | return -2; | |
1076 | } | |
1077 | /* Should be able to queue multiple buffers to receive on a pipe */ | |
1078 | if (pipe_active(dbri, info->pipe)) { | |
4338829e | 1079 | printk(KERN_ERR "DBRI: recv_on_pipe: Called on active pipe %d\n", |
1bd9debf TI |
1080 | info->pipe); |
1081 | return -2; | |
1082 | } | |
1083 | ||
1084 | /* Make sure buffer size is multiple of four */ | |
1085 | len &= ~3; | |
1086 | } | |
1087 | ||
1088 | while (len > 0) { | |
1089 | int mylen; | |
1090 | ||
1091 | for (; desc < DBRI_NO_DESCS; desc++) { | |
c2735446 | 1092 | if (!dbri->dma->desc[desc].ba) |
1bd9debf TI |
1093 | break; |
1094 | } | |
1095 | if (desc == DBRI_NO_DESCS) { | |
4338829e | 1096 | printk(KERN_ERR "DBRI: setup_descs: No descriptors\n"); |
1bd9debf TI |
1097 | return -1; |
1098 | } | |
1099 | ||
1be54c82 KH |
1100 | if (len > DBRI_TD_MAXCNT) |
1101 | mylen = DBRI_TD_MAXCNT; /* 8KB - 4 */ | |
1102 | else | |
1bd9debf | 1103 | mylen = len; |
1be54c82 KH |
1104 | |
1105 | if (mylen > period) | |
1bd9debf | 1106 | mylen = period; |
1bd9debf | 1107 | |
c2735446 | 1108 | dbri->next_desc[desc] = -1; |
1bd9debf TI |
1109 | dbri->dma->desc[desc].ba = dvma_buffer; |
1110 | dbri->dma->desc[desc].nda = 0; | |
1111 | ||
1112 | if (streamno == DBRI_PLAY) { | |
1bd9debf TI |
1113 | dbri->dma->desc[desc].word1 = DBRI_TD_CNT(mylen); |
1114 | dbri->dma->desc[desc].word4 = 0; | |
1be54c82 KH |
1115 | dbri->dma->desc[desc].word1 |= |
1116 | DBRI_TD_F | DBRI_TD_B; | |
1bd9debf | 1117 | } else { |
1bd9debf TI |
1118 | dbri->dma->desc[desc].word1 = 0; |
1119 | dbri->dma->desc[desc].word4 = | |
1120 | DBRI_RD_B | DBRI_RD_BCNT(mylen); | |
1121 | } | |
1122 | ||
1be54c82 | 1123 | if (first_desc == -1) |
1bd9debf | 1124 | first_desc = desc; |
1be54c82 | 1125 | else { |
c2735446 | 1126 | dbri->next_desc[last_desc] = desc; |
1bd9debf TI |
1127 | dbri->dma->desc[last_desc].nda = |
1128 | dbri->dma_dvma + dbri_dma_off(desc, desc); | |
1129 | } | |
1130 | ||
1131 | last_desc = desc; | |
1132 | dvma_buffer += mylen; | |
1133 | len -= mylen; | |
1134 | } | |
1135 | ||
1136 | if (first_desc == -1 || last_desc == -1) { | |
4338829e | 1137 | printk(KERN_ERR "DBRI: setup_descs: Not enough descriptors available\n"); |
1bd9debf TI |
1138 | return -1; |
1139 | } | |
1140 | ||
1bd9debf TI |
1141 | if (streamno == DBRI_PLAY) { |
1142 | dbri->dma->desc[last_desc].word1 |= | |
1be54c82 KH |
1143 | DBRI_TD_F | DBRI_TD_B; |
1144 | dbri->dma->desc[last_desc].nda = | |
1145 | dbri->dma_dvma + dbri_dma_off(desc, first_desc); | |
1146 | dbri->next_desc[last_desc] = first_desc; | |
1bd9debf TI |
1147 | } |
1148 | dbri->pipes[info->pipe].first_desc = first_desc; | |
1149 | dbri->pipes[info->pipe].desc = first_desc; | |
1150 | ||
1be54c82 KH |
1151 | #ifdef DBRI_DEBUG |
1152 | for (desc = first_desc; desc != -1; ) { | |
1bd9debf TI |
1153 | dprintk(D_DESC, "DESC %d: %08x %08x %08x %08x\n", |
1154 | desc, | |
1155 | dbri->dma->desc[desc].word1, | |
1156 | dbri->dma->desc[desc].ba, | |
1157 | dbri->dma->desc[desc].nda, dbri->dma->desc[desc].word4); | |
1be54c82 KH |
1158 | desc = dbri->next_desc[desc]; |
1159 | if ( desc == first_desc ) | |
1160 | break; | |
1bd9debf | 1161 | } |
1be54c82 | 1162 | #endif |
1bd9debf TI |
1163 | return 0; |
1164 | } | |
1165 | ||
1166 | /* | |
1167 | **************************************************************************** | |
1168 | ************************** DBRI - CHI interface **************************** | |
1169 | **************************************************************************** | |
1170 | ||
1171 | The CHI is a four-wire (clock, frame sync, data in, data out) time-division | |
1172 | multiplexed serial interface which the DBRI can operate in either master | |
1173 | (give clock/frame sync) or slave (take clock/frame sync) mode. | |
1174 | ||
1175 | */ | |
1176 | ||
1177 | enum master_or_slave { CHImaster, CHIslave }; | |
1178 | ||
475675d6 | 1179 | static void reset_chi(struct snd_dbri * dbri, enum master_or_slave master_or_slave, |
1bd9debf TI |
1180 | int bits_per_frame) |
1181 | { | |
1be54c82 | 1182 | s32 *cmd; |
1bd9debf | 1183 | int val; |
1bd9debf | 1184 | |
1be54c82 | 1185 | /* Set CHI Anchor: Pipe 16 */ |
1bd9debf | 1186 | |
1be54c82 KH |
1187 | cmd = dbri_cmdlock(dbri, 4); |
1188 | val = D_DTS_VO | D_DTS_VI | D_DTS_INS | |
1189 | | D_DTS_PRVIN(16) | D_PIPE(16) | D_DTS_PRVOUT(16); | |
1190 | *(cmd++) = DBRI_CMD(D_DTS, 0, val); | |
1191 | *(cmd++) = D_TS_ANCHOR | D_TS_NEXT(16); | |
1192 | *(cmd++) = D_TS_ANCHOR | D_TS_NEXT(16); | |
1193 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); | |
1194 | dbri_cmdsend(dbri, cmd, 4); | |
1bd9debf | 1195 | |
1be54c82 KH |
1196 | dbri->pipes[16].sdp = 1; |
1197 | dbri->pipes[16].nextpipe = 16; | |
1bd9debf | 1198 | |
1be54c82 | 1199 | cmd = dbri_cmdlock(dbri, 4); |
1bd9debf TI |
1200 | |
1201 | if (master_or_slave == CHIslave) { | |
1202 | /* Setup DBRI for CHI Slave - receive clock, frame sync (FS) | |
1203 | * | |
1204 | * CHICM = 0 (slave mode, 8 kHz frame rate) | |
1205 | * IR = give immediate CHI status interrupt | |
1206 | * EN = give CHI status interrupt upon change | |
1207 | */ | |
1208 | *(cmd++) = DBRI_CMD(D_CHI, 0, D_CHI_CHICM(0)); | |
1209 | } else { | |
1210 | /* Setup DBRI for CHI Master - generate clock, FS | |
1211 | * | |
1212 | * BPF = bits per 8 kHz frame | |
1213 | * 12.288 MHz / CHICM_divisor = clock rate | |
1214 | * FD = 1 - drive CHIFS on rising edge of CHICK | |
1215 | */ | |
1216 | int clockrate = bits_per_frame * 8; | |
1217 | int divisor = 12288 / clockrate; | |
1218 | ||
1219 | if (divisor > 255 || divisor * clockrate != 12288) | |
4338829e | 1220 | printk(KERN_ERR "DBRI: illegal bits_per_frame in setup_chi\n"); |
1bd9debf TI |
1221 | |
1222 | *(cmd++) = DBRI_CMD(D_CHI, 0, D_CHI_CHICM(divisor) | D_CHI_FD | |
1223 | | D_CHI_BPF(bits_per_frame)); | |
1224 | } | |
1225 | ||
1226 | dbri->chi_bpf = bits_per_frame; | |
1227 | ||
1228 | /* CHI Data Mode | |
1229 | * | |
1230 | * RCE = 0 - receive on falling edge of CHICK | |
1231 | * XCE = 1 - transmit on rising edge of CHICK | |
1232 | * XEN = 1 - enable transmitter | |
1233 | * REN = 1 - enable receiver | |
1234 | */ | |
1235 | ||
1236 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); | |
1237 | *(cmd++) = DBRI_CMD(D_CDM, 0, D_CDM_XCE | D_CDM_XEN | D_CDM_REN); | |
1be54c82 | 1238 | *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); |
1bd9debf | 1239 | |
1be54c82 | 1240 | dbri_cmdsend(dbri, cmd, 4); |
1bd9debf TI |
1241 | } |
1242 | ||
1243 | /* | |
1244 | **************************************************************************** | |
1245 | *********************** CS4215 audio codec management ********************** | |
1246 | **************************************************************************** | |
1247 | ||
1248 | In the standard SPARC audio configuration, the CS4215 codec is attached | |
1249 | to the DBRI via the CHI interface and few of the DBRI's PIO pins. | |
1250 | ||
1251 | */ | |
475675d6 | 1252 | static void cs4215_setup_pipes(struct snd_dbri * dbri) |
1bd9debf TI |
1253 | { |
1254 | /* | |
1255 | * Data mode: | |
1256 | * Pipe 4: Send timeslots 1-4 (audio data) | |
1257 | * Pipe 20: Send timeslots 5-8 (part of ctrl data) | |
1258 | * Pipe 6: Receive timeslots 1-4 (audio data) | |
1259 | * Pipe 21: Receive timeslots 6-7. We can only receive 20 bits via | |
1260 | * interrupt, and the rest of the data (slot 5 and 8) is | |
1261 | * not relevant for us (only for doublechecking). | |
1262 | * | |
1263 | * Control mode: | |
1264 | * Pipe 17: Send timeslots 1-4 (slots 5-8 are readonly) | |
1265 | * Pipe 18: Receive timeslot 1 (clb). | |
1266 | * Pipe 19: Receive timeslot 7 (version). | |
1267 | */ | |
1268 | ||
1269 | setup_pipe(dbri, 4, D_SDP_MEM | D_SDP_TO_SER | D_SDP_MSB); | |
1270 | setup_pipe(dbri, 20, D_SDP_FIXED | D_SDP_TO_SER | D_SDP_MSB); | |
1271 | setup_pipe(dbri, 6, D_SDP_MEM | D_SDP_FROM_SER | D_SDP_MSB); | |
1272 | setup_pipe(dbri, 21, D_SDP_FIXED | D_SDP_FROM_SER | D_SDP_MSB); | |
1273 | ||
1274 | setup_pipe(dbri, 17, D_SDP_FIXED | D_SDP_TO_SER | D_SDP_MSB); | |
1275 | setup_pipe(dbri, 18, D_SDP_FIXED | D_SDP_FROM_SER | D_SDP_MSB); | |
1276 | setup_pipe(dbri, 19, D_SDP_FIXED | D_SDP_FROM_SER | D_SDP_MSB); | |
1be54c82 KH |
1277 | |
1278 | dbri_cmdwait(dbri); | |
1bd9debf TI |
1279 | } |
1280 | ||
1281 | static int cs4215_init_data(struct cs4215 *mm) | |
1282 | { | |
1283 | /* | |
1284 | * No action, memory resetting only. | |
1285 | * | |
1286 | * Data Time Slot 5-8 | |
1287 | * Speaker,Line and Headphone enable. Gain set to the half. | |
1288 | * Input is mike. | |
1289 | */ | |
1290 | mm->data[0] = CS4215_LO(0x20) | CS4215_HE | CS4215_LE; | |
1291 | mm->data[1] = CS4215_RO(0x20) | CS4215_SE; | |
1292 | mm->data[2] = CS4215_LG(0x8) | CS4215_IS | CS4215_PIO0 | CS4215_PIO1; | |
1293 | mm->data[3] = CS4215_RG(0x8) | CS4215_MA(0xf); | |
1294 | ||
1295 | /* | |
1296 | * Control Time Slot 1-4 | |
1297 | * 0: Default I/O voltage scale | |
1298 | * 1: 8 bit ulaw, 8kHz, mono, high pass filter disabled | |
1299 | * 2: Serial enable, CHI master, 128 bits per frame, clock 1 | |
1300 | * 3: Tests disabled | |
1301 | */ | |
1302 | mm->ctrl[0] = CS4215_RSRVD_1 | CS4215_MLB; | |
1303 | mm->ctrl[1] = CS4215_DFR_ULAW | CS4215_FREQ[0].csval; | |
1304 | mm->ctrl[2] = CS4215_XCLK | CS4215_BSEL_128 | CS4215_FREQ[0].xtal; | |
1305 | mm->ctrl[3] = 0; | |
1306 | ||
1307 | mm->status = 0; | |
1308 | mm->version = 0xff; | |
1309 | mm->precision = 8; /* For ULAW */ | |
1be54c82 | 1310 | mm->channels = 1; |
1bd9debf TI |
1311 | |
1312 | return 0; | |
1313 | } | |
1314 | ||
475675d6 | 1315 | static void cs4215_setdata(struct snd_dbri * dbri, int muted) |
1bd9debf TI |
1316 | { |
1317 | if (muted) { | |
1318 | dbri->mm.data[0] |= 63; | |
1319 | dbri->mm.data[1] |= 63; | |
1320 | dbri->mm.data[2] &= ~15; | |
1321 | dbri->mm.data[3] &= ~15; | |
1322 | } else { | |
1323 | /* Start by setting the playback attenuation. */ | |
475675d6 | 1324 | struct dbri_streaminfo *info = &dbri->stream_info[DBRI_PLAY]; |
470f1f1a KH |
1325 | int left_gain = info->left_gain & 0x3f; |
1326 | int right_gain = info->right_gain & 0x3f; | |
1bd9debf | 1327 | |
1bd9debf TI |
1328 | dbri->mm.data[0] &= ~0x3f; /* Reset the volume bits */ |
1329 | dbri->mm.data[1] &= ~0x3f; | |
1330 | dbri->mm.data[0] |= (DBRI_MAX_VOLUME - left_gain); | |
1331 | dbri->mm.data[1] |= (DBRI_MAX_VOLUME - right_gain); | |
1332 | ||
1333 | /* Now set the recording gain. */ | |
1334 | info = &dbri->stream_info[DBRI_REC]; | |
470f1f1a KH |
1335 | left_gain = info->left_gain & 0xf; |
1336 | right_gain = info->right_gain & 0xf; | |
1bd9debf TI |
1337 | dbri->mm.data[2] |= CS4215_LG(left_gain); |
1338 | dbri->mm.data[3] |= CS4215_RG(right_gain); | |
1339 | } | |
1340 | ||
1341 | xmit_fixed(dbri, 20, *(int *)dbri->mm.data); | |
1342 | } | |
1343 | ||
1344 | /* | |
1345 | * Set the CS4215 to data mode. | |
1346 | */ | |
475675d6 | 1347 | static void cs4215_open(struct snd_dbri * dbri) |
1bd9debf TI |
1348 | { |
1349 | int data_width; | |
1350 | u32 tmp; | |
1351 | ||
1352 | dprintk(D_MM, "cs4215_open: %d channels, %d bits\n", | |
1353 | dbri->mm.channels, dbri->mm.precision); | |
1354 | ||
1355 | /* Temporarily mute outputs, and wait 1/8000 sec (125 us) | |
1356 | * to make sure this takes. This avoids clicking noises. | |
1357 | */ | |
1358 | ||
1359 | cs4215_setdata(dbri, 1); | |
1360 | udelay(125); | |
1361 | ||
1362 | /* | |
1363 | * Data mode: | |
1364 | * Pipe 4: Send timeslots 1-4 (audio data) | |
1365 | * Pipe 20: Send timeslots 5-8 (part of ctrl data) | |
1366 | * Pipe 6: Receive timeslots 1-4 (audio data) | |
1367 | * Pipe 21: Receive timeslots 6-7. We can only receive 20 bits via | |
1368 | * interrupt, and the rest of the data (slot 5 and 8) is | |
1369 | * not relevant for us (only for doublechecking). | |
1370 | * | |
1371 | * Just like in control mode, the time slots are all offset by eight | |
1372 | * bits. The CS4215, it seems, observes TSIN (the delayed signal) | |
1373 | * even if it's the CHI master. Don't ask me... | |
1374 | */ | |
1375 | tmp = sbus_readl(dbri->regs + REG0); | |
1376 | tmp &= ~(D_C); /* Disable CHI */ | |
1377 | sbus_writel(tmp, dbri->regs + REG0); | |
1378 | ||
1379 | /* Switch CS4215 to data mode - set PIO3 to 1 */ | |
1380 | sbus_writel(D_ENPIO | D_PIO1 | D_PIO3 | | |
1381 | (dbri->mm.onboard ? D_PIO0 : D_PIO2), dbri->regs + REG2); | |
1382 | ||
1383 | reset_chi(dbri, CHIslave, 128); | |
1384 | ||
1385 | /* Note: this next doesn't work for 8-bit stereo, because the two | |
1386 | * channels would be on timeslots 1 and 3, with 2 and 4 idle. | |
1387 | * (See CS4215 datasheet Fig 15) | |
1388 | * | |
1389 | * DBRI non-contiguous mode would be required to make this work. | |
1390 | */ | |
1391 | data_width = dbri->mm.channels * dbri->mm.precision; | |
1392 | ||
294a30dc KH |
1393 | link_time_slot(dbri, 4, 16, 16, data_width, dbri->mm.offset); |
1394 | link_time_slot(dbri, 20, 4, 16, 32, dbri->mm.offset + 32); | |
1395 | link_time_slot(dbri, 6, 16, 16, data_width, dbri->mm.offset); | |
1396 | link_time_slot(dbri, 21, 6, 16, 16, dbri->mm.offset + 40); | |
1bd9debf TI |
1397 | |
1398 | /* FIXME: enable CHI after _setdata? */ | |
1399 | tmp = sbus_readl(dbri->regs + REG0); | |
1400 | tmp |= D_C; /* Enable CHI */ | |
1401 | sbus_writel(tmp, dbri->regs + REG0); | |
1402 | ||
1403 | cs4215_setdata(dbri, 0); | |
1404 | } | |
1405 | ||
1406 | /* | |
1407 | * Send the control information (i.e. audio format) | |
1408 | */ | |
475675d6 | 1409 | static int cs4215_setctrl(struct snd_dbri * dbri) |
1bd9debf TI |
1410 | { |
1411 | int i, val; | |
1412 | u32 tmp; | |
1413 | ||
1414 | /* FIXME - let the CPU do something useful during these delays */ | |
1415 | ||
1416 | /* Temporarily mute outputs, and wait 1/8000 sec (125 us) | |
1417 | * to make sure this takes. This avoids clicking noises. | |
1418 | */ | |
1bd9debf TI |
1419 | cs4215_setdata(dbri, 1); |
1420 | udelay(125); | |
1421 | ||
1422 | /* | |
1423 | * Enable Control mode: Set DBRI's PIO3 (4215's D/~C) to 0, then wait | |
1424 | * 12 cycles <= 12/(5512.5*64) sec = 34.01 usec | |
1425 | */ | |
1426 | val = D_ENPIO | D_PIO1 | (dbri->mm.onboard ? D_PIO0 : D_PIO2); | |
1427 | sbus_writel(val, dbri->regs + REG2); | |
1428 | dprintk(D_MM, "cs4215_setctrl: reg2=0x%x\n", val); | |
1429 | udelay(34); | |
1430 | ||
1431 | /* In Control mode, the CS4215 is a slave device, so the DBRI must | |
1432 | * operate as CHI master, supplying clocking and frame synchronization. | |
1433 | * | |
1434 | * In Data mode, however, the CS4215 must be CHI master to insure | |
1435 | * that its data stream is synchronous with its codec. | |
1436 | * | |
1437 | * The upshot of all this? We start by putting the DBRI into master | |
1438 | * mode, program the CS4215 in Control mode, then switch the CS4215 | |
1439 | * into Data mode and put the DBRI into slave mode. Various timing | |
1440 | * requirements must be observed along the way. | |
1441 | * | |
1442 | * Oh, and one more thing, on a SPARCStation 20 (and maybe | |
1443 | * others?), the addressing of the CS4215's time slots is | |
1444 | * offset by eight bits, so we add eight to all the "cycle" | |
1445 | * values in the Define Time Slot (DTS) commands. This is | |
1446 | * done in hardware by a TI 248 that delays the DBRI->4215 | |
1447 | * frame sync signal by eight clock cycles. Anybody know why? | |
1448 | */ | |
1449 | tmp = sbus_readl(dbri->regs + REG0); | |
1450 | tmp &= ~D_C; /* Disable CHI */ | |
1451 | sbus_writel(tmp, dbri->regs + REG0); | |
1452 | ||
1453 | reset_chi(dbri, CHImaster, 128); | |
1454 | ||
1455 | /* | |
1456 | * Control mode: | |
1457 | * Pipe 17: Send timeslots 1-4 (slots 5-8 are readonly) | |
1458 | * Pipe 18: Receive timeslot 1 (clb). | |
1459 | * Pipe 19: Receive timeslot 7 (version). | |
1460 | */ | |
1461 | ||
294a30dc KH |
1462 | link_time_slot(dbri, 17, 16, 16, 32, dbri->mm.offset); |
1463 | link_time_slot(dbri, 18, 16, 16, 8, dbri->mm.offset); | |
1464 | link_time_slot(dbri, 19, 18, 16, 8, dbri->mm.offset + 48); | |
1bd9debf TI |
1465 | |
1466 | /* Wait for the chip to echo back CLB (Control Latch Bit) as zero */ | |
1467 | dbri->mm.ctrl[0] &= ~CS4215_CLB; | |
1468 | xmit_fixed(dbri, 17, *(int *)dbri->mm.ctrl); | |
1469 | ||
1470 | tmp = sbus_readl(dbri->regs + REG0); | |
1471 | tmp |= D_C; /* Enable CHI */ | |
1472 | sbus_writel(tmp, dbri->regs + REG0); | |
1473 | ||
4338829e MH |
1474 | for (i = 10; ((dbri->mm.status & 0xe4) != 0x20); --i) { |
1475 | msleep_interruptible(1); | |
1bd9debf TI |
1476 | } |
1477 | if (i == 0) { | |
1478 | dprintk(D_MM, "CS4215 didn't respond to CLB (0x%02x)\n", | |
1479 | dbri->mm.status); | |
1480 | return -1; | |
1481 | } | |
1482 | ||
1483 | /* Disable changes to our copy of the version number, as we are about | |
1484 | * to leave control mode. | |
1485 | */ | |
1486 | recv_fixed(dbri, 19, NULL); | |
1487 | ||
1488 | /* Terminate CS4215 control mode - data sheet says | |
1489 | * "Set CLB=1 and send two more frames of valid control info" | |
1490 | */ | |
1491 | dbri->mm.ctrl[0] |= CS4215_CLB; | |
1492 | xmit_fixed(dbri, 17, *(int *)dbri->mm.ctrl); | |
1493 | ||
1494 | /* Two frames of control info @ 8kHz frame rate = 250 us delay */ | |
1495 | udelay(250); | |
1496 | ||
1497 | cs4215_setdata(dbri, 0); | |
1498 | ||
1499 | return 0; | |
1500 | } | |
1501 | ||
1502 | /* | |
1503 | * Setup the codec with the sampling rate, audio format and number of | |
1504 | * channels. | |
1505 | * As part of the process we resend the settings for the data | |
1506 | * timeslots as well. | |
1507 | */ | |
475675d6 | 1508 | static int cs4215_prepare(struct snd_dbri * dbri, unsigned int rate, |
1bd9debf TI |
1509 | snd_pcm_format_t format, unsigned int channels) |
1510 | { | |
1511 | int freq_idx; | |
1512 | int ret = 0; | |
1513 | ||
1514 | /* Lookup index for this rate */ | |
1515 | for (freq_idx = 0; CS4215_FREQ[freq_idx].freq != 0; freq_idx++) { | |
1516 | if (CS4215_FREQ[freq_idx].freq == rate) | |
1517 | break; | |
1518 | } | |
1519 | if (CS4215_FREQ[freq_idx].freq != rate) { | |
1520 | printk(KERN_WARNING "DBRI: Unsupported rate %d Hz\n", rate); | |
1521 | return -1; | |
1522 | } | |
1523 | ||
1524 | switch (format) { | |
1525 | case SNDRV_PCM_FORMAT_MU_LAW: | |
1526 | dbri->mm.ctrl[1] = CS4215_DFR_ULAW; | |
1527 | dbri->mm.precision = 8; | |
1528 | break; | |
1529 | case SNDRV_PCM_FORMAT_A_LAW: | |
1530 | dbri->mm.ctrl[1] = CS4215_DFR_ALAW; | |
1531 | dbri->mm.precision = 8; | |
1532 | break; | |
1533 | case SNDRV_PCM_FORMAT_U8: | |
1534 | dbri->mm.ctrl[1] = CS4215_DFR_LINEAR8; | |
1535 | dbri->mm.precision = 8; | |
1536 | break; | |
1537 | case SNDRV_PCM_FORMAT_S16_BE: | |
1538 | dbri->mm.ctrl[1] = CS4215_DFR_LINEAR16; | |
1539 | dbri->mm.precision = 16; | |
1540 | break; | |
1541 | default: | |
1542 | printk(KERN_WARNING "DBRI: Unsupported format %d\n", format); | |
1543 | return -1; | |
1544 | } | |
1545 | ||
1546 | /* Add rate parameters */ | |
1547 | dbri->mm.ctrl[1] |= CS4215_FREQ[freq_idx].csval; | |
1548 | dbri->mm.ctrl[2] = CS4215_XCLK | | |
1549 | CS4215_BSEL_128 | CS4215_FREQ[freq_idx].xtal; | |
1550 | ||
1551 | dbri->mm.channels = channels; | |
1552 | /* Stereo bit: 8 bit stereo not working yet. */ | |
1553 | if ((channels > 1) && (dbri->mm.precision == 16)) | |
1554 | dbri->mm.ctrl[1] |= CS4215_DFR_STEREO; | |
1555 | ||
1556 | ret = cs4215_setctrl(dbri); | |
1557 | if (ret == 0) | |
1558 | cs4215_open(dbri); /* set codec to data mode */ | |
1559 | ||
1560 | return ret; | |
1561 | } | |
1562 | ||
1563 | /* | |
1564 | * | |
1565 | */ | |
475675d6 | 1566 | static int cs4215_init(struct snd_dbri * dbri) |
1bd9debf TI |
1567 | { |
1568 | u32 reg2 = sbus_readl(dbri->regs + REG2); | |
1569 | dprintk(D_MM, "cs4215_init: reg2=0x%x\n", reg2); | |
1570 | ||
1571 | /* Look for the cs4215 chips */ | |
1572 | if (reg2 & D_PIO2) { | |
1573 | dprintk(D_MM, "Onboard CS4215 detected\n"); | |
1574 | dbri->mm.onboard = 1; | |
1575 | } | |
1576 | if (reg2 & D_PIO0) { | |
1577 | dprintk(D_MM, "Speakerbox detected\n"); | |
1578 | dbri->mm.onboard = 0; | |
1579 | ||
1580 | if (reg2 & D_PIO2) { | |
1581 | printk(KERN_INFO "DBRI: Using speakerbox / " | |
1582 | "ignoring onboard mmcodec.\n"); | |
1583 | sbus_writel(D_ENPIO2, dbri->regs + REG2); | |
1584 | } | |
1585 | } | |
1586 | ||
1587 | if (!(reg2 & (D_PIO0 | D_PIO2))) { | |
1588 | printk(KERN_ERR "DBRI: no mmcodec found.\n"); | |
1589 | return -EIO; | |
1590 | } | |
1591 | ||
1592 | cs4215_setup_pipes(dbri); | |
1bd9debf TI |
1593 | cs4215_init_data(&dbri->mm); |
1594 | ||
1595 | /* Enable capture of the status & version timeslots. */ | |
1596 | recv_fixed(dbri, 18, &dbri->mm.status); | |
1597 | recv_fixed(dbri, 19, &dbri->mm.version); | |
1598 | ||
1599 | dbri->mm.offset = dbri->mm.onboard ? 0 : 8; | |
1600 | if (cs4215_setctrl(dbri) == -1 || dbri->mm.version == 0xff) { | |
1601 | dprintk(D_MM, "CS4215 failed probe at offset %d\n", | |
1602 | dbri->mm.offset); | |
1603 | return -EIO; | |
1604 | } | |
1605 | dprintk(D_MM, "Found CS4215 at offset %d\n", dbri->mm.offset); | |
1606 | ||
1607 | return 0; | |
1608 | } | |
1609 | ||
1610 | /* | |
1611 | **************************************************************************** | |
1612 | *************************** DBRI interrupt handler ************************* | |
1613 | **************************************************************************** | |
1614 | ||
1615 | The DBRI communicates with the CPU mainly via a circular interrupt | |
1616 | buffer. When an interrupt is signaled, the CPU walks through the | |
1617 | buffer and calls dbri_process_one_interrupt() for each interrupt word. | |
1618 | Complicated interrupts are handled by dedicated functions (which | |
1619 | appear first in this file). Any pending interrupts can be serviced by | |
1620 | calling dbri_process_interrupt_buffer(), which works even if the CPU's | |
1be54c82 | 1621 | interrupts are disabled. |
1bd9debf TI |
1622 | |
1623 | */ | |
1624 | ||
1625 | /* xmit_descs() | |
1626 | * | |
1627 | * Transmit the current TD's for recording/playing, if needed. | |
1628 | * For playback, ALSA has filled the DMA memory with new data (we hope). | |
1629 | */ | |
1be54c82 | 1630 | static void xmit_descs(struct snd_dbri *dbri) |
1bd9debf | 1631 | { |
475675d6 | 1632 | struct dbri_streaminfo *info; |
1be54c82 | 1633 | s32 *cmd; |
1bd9debf TI |
1634 | unsigned long flags; |
1635 | int first_td; | |
1636 | ||
1637 | if (dbri == NULL) | |
1638 | return; /* Disabled */ | |
1639 | ||
1640 | /* First check the recording stream for buffer overflow */ | |
1641 | info = &dbri->stream_info[DBRI_REC]; | |
1642 | spin_lock_irqsave(&dbri->lock, flags); | |
1643 | ||
1be54c82 | 1644 | if (info->pipe >= 0) { |
1bd9debf TI |
1645 | first_td = dbri->pipes[info->pipe].first_desc; |
1646 | ||
1647 | dprintk(D_DESC, "xmit_descs rec @ TD %d\n", first_td); | |
1648 | ||
1649 | /* Stream could be closed by the time we run. */ | |
1650 | if (first_td < 0) { | |
1651 | goto play; | |
1652 | } | |
1653 | ||
1be54c82 | 1654 | cmd = dbri_cmdlock(dbri, 2); |
1bd9debf TI |
1655 | *(cmd++) = DBRI_CMD(D_SDP, 0, |
1656 | dbri->pipes[info->pipe].sdp | |
1657 | | D_SDP_P | D_SDP_EVERY | D_SDP_C); | |
1658 | *(cmd++) = dbri->dma_dvma + dbri_dma_off(desc, first_td); | |
1be54c82 | 1659 | dbri_cmdsend(dbri, cmd, 2); |
1bd9debf TI |
1660 | |
1661 | /* Reset our admin of the pipe & bytes read. */ | |
1662 | dbri->pipes[info->pipe].desc = first_td; | |
1bd9debf TI |
1663 | } |
1664 | ||
1665 | play: | |
1666 | spin_unlock_irqrestore(&dbri->lock, flags); | |
1667 | ||
1668 | /* Now check the playback stream for buffer underflow */ | |
1669 | info = &dbri->stream_info[DBRI_PLAY]; | |
1670 | spin_lock_irqsave(&dbri->lock, flags); | |
1671 | ||
1be54c82 | 1672 | if (info->pipe >= 0) { |
1bd9debf TI |
1673 | first_td = dbri->pipes[info->pipe].first_desc; |
1674 | ||
1675 | dprintk(D_DESC, "xmit_descs play @ TD %d\n", first_td); | |
1676 | ||
1677 | /* Stream could be closed by the time we run. */ | |
1be54c82 KH |
1678 | if (first_td >= 0) { |
1679 | cmd = dbri_cmdlock(dbri, 2); | |
1680 | *(cmd++) = DBRI_CMD(D_SDP, 0, | |
1681 | dbri->pipes[info->pipe].sdp | |
1682 | | D_SDP_P | D_SDP_EVERY | D_SDP_C); | |
1683 | *(cmd++) = dbri->dma_dvma + dbri_dma_off(desc, first_td); | |
1684 | dbri_cmdsend(dbri, cmd, 2); | |
1bd9debf | 1685 | |
1be54c82 KH |
1686 | /* Reset our admin of the pipe & bytes written. */ |
1687 | dbri->pipes[info->pipe].desc = first_td; | |
1688 | } | |
1bd9debf TI |
1689 | } |
1690 | spin_unlock_irqrestore(&dbri->lock, flags); | |
1691 | } | |
1692 | ||
1bd9debf TI |
1693 | /* transmission_complete_intr() |
1694 | * | |
1695 | * Called by main interrupt handler when DBRI signals transmission complete | |
1696 | * on a pipe (interrupt triggered by the B bit in a transmit descriptor). | |
1697 | * | |
4338829e MH |
1698 | * Walks through the pipe's list of transmit buffer descriptors and marks |
1699 | * them as available. Stops when the first descriptor is found without | |
1bd9debf | 1700 | * TBC (Transmit Buffer Complete) set, or we've run through them all. |
4338829e MH |
1701 | * |
1702 | * The DMA buffers are not released, but re-used. Since the transmit buffer | |
1703 | * descriptors are not clobbered, they can be re-submitted as is. This is | |
1704 | * done by the xmit_descs() tasklet above since that could take longer. | |
1bd9debf TI |
1705 | */ |
1706 | ||
475675d6 | 1707 | static void transmission_complete_intr(struct snd_dbri * dbri, int pipe) |
1bd9debf | 1708 | { |
475675d6 | 1709 | struct dbri_streaminfo *info; |
1bd9debf TI |
1710 | int td; |
1711 | int status; | |
1712 | ||
1713 | info = &dbri->stream_info[DBRI_PLAY]; | |
1714 | ||
1715 | td = dbri->pipes[pipe].desc; | |
1716 | while (td >= 0) { | |
1717 | if (td >= DBRI_NO_DESCS) { | |
1718 | printk(KERN_ERR "DBRI: invalid td on pipe %d\n", pipe); | |
1719 | return; | |
1720 | } | |
1721 | ||
1722 | status = DBRI_TD_STATUS(dbri->dma->desc[td].word4); | |
1723 | if (!(status & DBRI_TD_TBC)) { | |
1724 | break; | |
1725 | } | |
1726 | ||
1727 | dprintk(D_INT, "TD %d, status 0x%02x\n", td, status); | |
1728 | ||
1729 | dbri->dma->desc[td].word4 = 0; /* Reset it for next time. */ | |
1be54c82 | 1730 | info->offset += DBRI_RD_CNT(dbri->dma->desc[td].word1); |
1bd9debf | 1731 | |
c2735446 | 1732 | td = dbri->next_desc[td]; |
1bd9debf TI |
1733 | dbri->pipes[pipe].desc = td; |
1734 | } | |
1735 | ||
1736 | /* Notify ALSA */ | |
1737 | if (spin_is_locked(&dbri->lock)) { | |
1738 | spin_unlock(&dbri->lock); | |
1739 | snd_pcm_period_elapsed(info->substream); | |
1740 | spin_lock(&dbri->lock); | |
1741 | } else | |
1742 | snd_pcm_period_elapsed(info->substream); | |
1743 | } | |
1744 | ||
475675d6 | 1745 | static void reception_complete_intr(struct snd_dbri * dbri, int pipe) |
1bd9debf | 1746 | { |
475675d6 | 1747 | struct dbri_streaminfo *info; |
1bd9debf TI |
1748 | int rd = dbri->pipes[pipe].desc; |
1749 | s32 status; | |
1750 | ||
1751 | if (rd < 0 || rd >= DBRI_NO_DESCS) { | |
1752 | printk(KERN_ERR "DBRI: invalid rd on pipe %d\n", pipe); | |
1753 | return; | |
1754 | } | |
1755 | ||
c2735446 KH |
1756 | dbri->dma->desc[rd].ba = 0; |
1757 | dbri->pipes[pipe].desc = dbri->next_desc[rd]; | |
1bd9debf TI |
1758 | status = dbri->dma->desc[rd].word1; |
1759 | dbri->dma->desc[rd].word1 = 0; /* Reset it for next time. */ | |
1760 | ||
1761 | info = &dbri->stream_info[DBRI_REC]; | |
1762 | info->offset += DBRI_RD_CNT(status); | |
1bd9debf TI |
1763 | |
1764 | /* FIXME: Check status */ | |
1765 | ||
1766 | dprintk(D_INT, "Recv RD %d, status 0x%02x, len %d\n", | |
1767 | rd, DBRI_RD_STATUS(status), DBRI_RD_CNT(status)); | |
1768 | ||
1769 | /* On the last TD, transmit them all again. */ | |
1be54c82 | 1770 | #if 0 |
c2735446 | 1771 | if (dbri->next_desc[rd] == -1) { |
1bd9debf TI |
1772 | if (info->left > info->size) { |
1773 | printk(KERN_WARNING | |
1774 | "%d bytes recorded in %d size buffer.\n", | |
1775 | info->left, info->size); | |
1776 | } | |
1777 | tasklet_schedule(&xmit_descs_task); | |
1778 | } | |
1be54c82 | 1779 | #endif |
1bd9debf TI |
1780 | |
1781 | /* Notify ALSA */ | |
1782 | if (spin_is_locked(&dbri->lock)) { | |
1783 | spin_unlock(&dbri->lock); | |
1784 | snd_pcm_period_elapsed(info->substream); | |
1785 | spin_lock(&dbri->lock); | |
1786 | } else | |
1787 | snd_pcm_period_elapsed(info->substream); | |
1788 | } | |
1789 | ||
475675d6 | 1790 | static void dbri_process_one_interrupt(struct snd_dbri * dbri, int x) |
1bd9debf TI |
1791 | { |
1792 | int val = D_INTR_GETVAL(x); | |
1793 | int channel = D_INTR_GETCHAN(x); | |
1794 | int command = D_INTR_GETCMD(x); | |
1795 | int code = D_INTR_GETCODE(x); | |
1796 | #ifdef DBRI_DEBUG | |
1797 | int rval = D_INTR_GETRVAL(x); | |
1798 | #endif | |
1799 | ||
1800 | if (channel == D_INTR_CMD) { | |
1801 | dprintk(D_CMD, "INTR: Command: %-5s Value:%d\n", | |
1802 | cmds[command], val); | |
1803 | } else { | |
1804 | dprintk(D_INT, "INTR: Chan:%d Code:%d Val:%#x\n", | |
1805 | channel, code, rval); | |
1806 | } | |
1807 | ||
1bd9debf | 1808 | switch (code) { |
1be54c82 KH |
1809 | case D_INTR_CMDI: |
1810 | if (command != D_WAIT) | |
1811 | printk(KERN_ERR "DBRI: Command read interrupt\n"); | |
1812 | break; | |
1bd9debf TI |
1813 | case D_INTR_BRDY: |
1814 | reception_complete_intr(dbri, channel); | |
1815 | break; | |
1816 | case D_INTR_XCMP: | |
1817 | case D_INTR_MINT: | |
1818 | transmission_complete_intr(dbri, channel); | |
1819 | break; | |
1820 | case D_INTR_UNDR: | |
1821 | /* UNDR - Transmission underrun | |
1822 | * resend SDP command with clear pipe bit (C) set | |
1823 | */ | |
1824 | { | |
1be54c82 KH |
1825 | /* FIXME: do something useful in case of underrun */ |
1826 | printk(KERN_ERR "DBRI: Underrun error\n"); | |
1827 | #if 0 | |
1828 | s32 *cmd; | |
1bd9debf TI |
1829 | int pipe = channel; |
1830 | int td = dbri->pipes[pipe].desc; | |
1831 | ||
1832 | dbri->dma->desc[td].word4 = 0; | |
1833 | cmd = dbri_cmdlock(dbri, NoGetLock); | |
1834 | *(cmd++) = DBRI_CMD(D_SDP, 0, | |
1835 | dbri->pipes[pipe].sdp | |
1836 | | D_SDP_P | D_SDP_C | D_SDP_2SAME); | |
1837 | *(cmd++) = dbri->dma_dvma + dbri_dma_off(desc, td); | |
1838 | dbri_cmdsend(dbri, cmd); | |
1be54c82 | 1839 | #endif |
1bd9debf TI |
1840 | } |
1841 | break; | |
1842 | case D_INTR_FXDT: | |
1843 | /* FXDT - Fixed data change */ | |
1844 | if (dbri->pipes[channel].sdp & D_SDP_MSB) | |
1845 | val = reverse_bytes(val, dbri->pipes[channel].length); | |
1846 | ||
1847 | if (dbri->pipes[channel].recv_fixed_ptr) | |
1848 | *(dbri->pipes[channel].recv_fixed_ptr) = val; | |
1849 | break; | |
1850 | default: | |
1851 | if (channel != D_INTR_CMD) | |
1852 | printk(KERN_WARNING | |
1853 | "DBRI: Ignored Interrupt: %d (0x%x)\n", code, x); | |
1854 | } | |
1855 | } | |
1856 | ||
1857 | /* dbri_process_interrupt_buffer advances through the DBRI's interrupt | |
1858 | * buffer until it finds a zero word (indicating nothing more to do | |
1859 | * right now). Non-zero words require processing and are handed off | |
1be54c82 | 1860 | * to dbri_process_one_interrupt AFTER advancing the pointer. |
1bd9debf | 1861 | */ |
475675d6 | 1862 | static void dbri_process_interrupt_buffer(struct snd_dbri * dbri) |
1bd9debf TI |
1863 | { |
1864 | s32 x; | |
1865 | ||
1866 | while ((x = dbri->dma->intr[dbri->dbri_irqp]) != 0) { | |
1867 | dbri->dma->intr[dbri->dbri_irqp] = 0; | |
1868 | dbri->dbri_irqp++; | |
6fb98280 | 1869 | if (dbri->dbri_irqp == DBRI_INT_BLK) |
1bd9debf | 1870 | dbri->dbri_irqp = 1; |
1bd9debf TI |
1871 | |
1872 | dbri_process_one_interrupt(dbri, x); | |
1873 | } | |
1874 | } | |
1875 | ||
1876 | static irqreturn_t snd_dbri_interrupt(int irq, void *dev_id, | |
1877 | struct pt_regs *regs) | |
1878 | { | |
475675d6 | 1879 | struct snd_dbri *dbri = dev_id; |
1bd9debf TI |
1880 | static int errcnt = 0; |
1881 | int x; | |
1882 | ||
1883 | if (dbri == NULL) | |
1884 | return IRQ_NONE; | |
1885 | spin_lock(&dbri->lock); | |
1886 | ||
1887 | /* | |
1888 | * Read it, so the interrupt goes away. | |
1889 | */ | |
1890 | x = sbus_readl(dbri->regs + REG1); | |
1891 | ||
1892 | if (x & (D_MRR | D_MLE | D_LBG | D_MBE)) { | |
1893 | u32 tmp; | |
1894 | ||
1895 | if (x & D_MRR) | |
1896 | printk(KERN_ERR | |
1897 | "DBRI: Multiple Error Ack on SBus reg1=0x%x\n", | |
1898 | x); | |
1899 | if (x & D_MLE) | |
1900 | printk(KERN_ERR | |
1901 | "DBRI: Multiple Late Error on SBus reg1=0x%x\n", | |
1902 | x); | |
1903 | if (x & D_LBG) | |
1904 | printk(KERN_ERR | |
1905 | "DBRI: Lost Bus Grant on SBus reg1=0x%x\n", x); | |
1906 | if (x & D_MBE) | |
1907 | printk(KERN_ERR | |
1908 | "DBRI: Burst Error on SBus reg1=0x%x\n", x); | |
1909 | ||
1910 | /* Some of these SBus errors cause the chip's SBus circuitry | |
1911 | * to be disabled, so just re-enable and try to keep going. | |
1912 | * | |
1913 | * The only one I've seen is MRR, which will be triggered | |
1914 | * if you let a transmit pipe underrun, then try to CDP it. | |
1915 | * | |
4338829e | 1916 | * If these things persist, we reset the chip. |
1bd9debf TI |
1917 | */ |
1918 | if ((++errcnt) % 10 == 0) { | |
1919 | dprintk(D_INT, "Interrupt errors exceeded.\n"); | |
1920 | dbri_reset(dbri); | |
1921 | } else { | |
1922 | tmp = sbus_readl(dbri->regs + REG0); | |
1923 | tmp &= ~(D_D); | |
1924 | sbus_writel(tmp, dbri->regs + REG0); | |
1925 | } | |
1926 | } | |
1927 | ||
1928 | dbri_process_interrupt_buffer(dbri); | |
1929 | ||
1bd9debf TI |
1930 | spin_unlock(&dbri->lock); |
1931 | ||
1932 | return IRQ_HANDLED; | |
1933 | } | |
1934 | ||
1935 | /**************************************************************************** | |
1936 | PCM Interface | |
1937 | ****************************************************************************/ | |
475675d6 | 1938 | static struct snd_pcm_hardware snd_dbri_pcm_hw = { |
1bd9debf TI |
1939 | .info = (SNDRV_PCM_INFO_MMAP | |
1940 | SNDRV_PCM_INFO_INTERLEAVED | | |
1941 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
1942 | SNDRV_PCM_INFO_MMAP_VALID), | |
1943 | .formats = SNDRV_PCM_FMTBIT_MU_LAW | | |
1944 | SNDRV_PCM_FMTBIT_A_LAW | | |
1945 | SNDRV_PCM_FMTBIT_U8 | | |
1946 | SNDRV_PCM_FMTBIT_S16_BE, | |
1947 | .rates = SNDRV_PCM_RATE_8000_48000, | |
1948 | .rate_min = 8000, | |
1949 | .rate_max = 48000, | |
1950 | .channels_min = 1, | |
1951 | .channels_max = 2, | |
1952 | .buffer_bytes_max = (64 * 1024), | |
1953 | .period_bytes_min = 1, | |
1954 | .period_bytes_max = DBRI_TD_MAXCNT, | |
1955 | .periods_min = 1, | |
1956 | .periods_max = 1024, | |
1957 | }; | |
1958 | ||
475675d6 | 1959 | static int snd_dbri_open(struct snd_pcm_substream *substream) |
1bd9debf | 1960 | { |
475675d6 TI |
1961 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
1962 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1963 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); | |
1bd9debf TI |
1964 | unsigned long flags; |
1965 | ||
1966 | dprintk(D_USR, "open audio output.\n"); | |
1967 | runtime->hw = snd_dbri_pcm_hw; | |
1968 | ||
1969 | spin_lock_irqsave(&dbri->lock, flags); | |
1970 | info->substream = substream; | |
1bd9debf TI |
1971 | info->offset = 0; |
1972 | info->dvma_buffer = 0; | |
1973 | info->pipe = -1; | |
1974 | spin_unlock_irqrestore(&dbri->lock, flags); | |
1975 | ||
1976 | cs4215_open(dbri); | |
1977 | ||
1978 | return 0; | |
1979 | } | |
1980 | ||
475675d6 | 1981 | static int snd_dbri_close(struct snd_pcm_substream *substream) |
1bd9debf | 1982 | { |
475675d6 TI |
1983 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
1984 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); | |
1bd9debf TI |
1985 | |
1986 | dprintk(D_USR, "close audio output.\n"); | |
1987 | info->substream = NULL; | |
1bd9debf TI |
1988 | info->offset = 0; |
1989 | ||
1990 | return 0; | |
1991 | } | |
1992 | ||
475675d6 TI |
1993 | static int snd_dbri_hw_params(struct snd_pcm_substream *substream, |
1994 | struct snd_pcm_hw_params *hw_params) | |
1bd9debf | 1995 | { |
475675d6 TI |
1996 | struct snd_pcm_runtime *runtime = substream->runtime; |
1997 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); | |
1998 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); | |
1bd9debf TI |
1999 | int direction; |
2000 | int ret; | |
2001 | ||
2002 | /* set sampling rate, audio format and number of channels */ | |
2003 | ret = cs4215_prepare(dbri, params_rate(hw_params), | |
2004 | params_format(hw_params), | |
2005 | params_channels(hw_params)); | |
2006 | if (ret != 0) | |
2007 | return ret; | |
2008 | ||
2009 | if ((ret = snd_pcm_lib_malloc_pages(substream, | |
2010 | params_buffer_bytes(hw_params))) < 0) { | |
4338829e | 2011 | printk(KERN_ERR "malloc_pages failed with %d\n", ret); |
1bd9debf TI |
2012 | return ret; |
2013 | } | |
2014 | ||
2015 | /* hw_params can get called multiple times. Only map the DMA once. | |
2016 | */ | |
2017 | if (info->dvma_buffer == 0) { | |
2018 | if (DBRI_STREAMNO(substream) == DBRI_PLAY) | |
2019 | direction = SBUS_DMA_TODEVICE; | |
2020 | else | |
2021 | direction = SBUS_DMA_FROMDEVICE; | |
2022 | ||
2023 | info->dvma_buffer = sbus_map_single(dbri->sdev, | |
2024 | runtime->dma_area, | |
2025 | params_buffer_bytes(hw_params), | |
2026 | direction); | |
2027 | } | |
2028 | ||
2029 | direction = params_buffer_bytes(hw_params); | |
2030 | dprintk(D_USR, "hw_params: %d bytes, dvma=%x\n", | |
2031 | direction, info->dvma_buffer); | |
2032 | return 0; | |
2033 | } | |
2034 | ||
475675d6 | 2035 | static int snd_dbri_hw_free(struct snd_pcm_substream *substream) |
1bd9debf | 2036 | { |
475675d6 TI |
2037 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2038 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); | |
1bd9debf TI |
2039 | int direction; |
2040 | dprintk(D_USR, "hw_free.\n"); | |
2041 | ||
2042 | /* hw_free can get called multiple times. Only unmap the DMA once. | |
2043 | */ | |
2044 | if (info->dvma_buffer) { | |
2045 | if (DBRI_STREAMNO(substream) == DBRI_PLAY) | |
2046 | direction = SBUS_DMA_TODEVICE; | |
2047 | else | |
2048 | direction = SBUS_DMA_FROMDEVICE; | |
2049 | ||
2050 | sbus_unmap_single(dbri->sdev, info->dvma_buffer, | |
2051 | substream->runtime->buffer_size, direction); | |
2052 | info->dvma_buffer = 0; | |
2053 | } | |
2054 | info->pipe = -1; | |
2055 | ||
2056 | return snd_pcm_lib_free_pages(substream); | |
2057 | } | |
2058 | ||
475675d6 | 2059 | static int snd_dbri_prepare(struct snd_pcm_substream *substream) |
1bd9debf | 2060 | { |
475675d6 TI |
2061 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2062 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); | |
2063 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1bd9debf TI |
2064 | int ret; |
2065 | ||
2066 | info->size = snd_pcm_lib_buffer_bytes(substream); | |
2067 | if (DBRI_STREAMNO(substream) == DBRI_PLAY) | |
2068 | info->pipe = 4; /* Send pipe */ | |
1be54c82 | 2069 | else |
1bd9debf | 2070 | info->pipe = 6; /* Receive pipe */ |
1bd9debf TI |
2071 | |
2072 | spin_lock_irq(&dbri->lock); | |
2073 | ||
2074 | /* Setup the all the transmit/receive desciptors to cover the | |
2075 | * whole DMA buffer. | |
2076 | */ | |
2077 | ret = setup_descs(dbri, DBRI_STREAMNO(substream), | |
2078 | snd_pcm_lib_period_bytes(substream)); | |
2079 | ||
2080 | runtime->stop_threshold = DBRI_TD_MAXCNT / runtime->channels; | |
2081 | ||
2082 | spin_unlock_irq(&dbri->lock); | |
2083 | ||
2084 | dprintk(D_USR, "prepare audio output. %d bytes\n", info->size); | |
2085 | return ret; | |
2086 | } | |
2087 | ||
475675d6 | 2088 | static int snd_dbri_trigger(struct snd_pcm_substream *substream, int cmd) |
1bd9debf | 2089 | { |
475675d6 TI |
2090 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2091 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); | |
1bd9debf TI |
2092 | int ret = 0; |
2093 | ||
2094 | switch (cmd) { | |
2095 | case SNDRV_PCM_TRIGGER_START: | |
2096 | dprintk(D_USR, "start audio, period is %d bytes\n", | |
2097 | (int)snd_pcm_lib_period_bytes(substream)); | |
1be54c82 KH |
2098 | /* Re-submit the TDs. */ |
2099 | xmit_descs(dbri); | |
1bd9debf TI |
2100 | break; |
2101 | case SNDRV_PCM_TRIGGER_STOP: | |
2102 | dprintk(D_USR, "stop audio.\n"); | |
1bd9debf TI |
2103 | reset_pipe(dbri, info->pipe); |
2104 | break; | |
2105 | default: | |
2106 | ret = -EINVAL; | |
2107 | } | |
2108 | ||
2109 | return ret; | |
2110 | } | |
2111 | ||
475675d6 | 2112 | static snd_pcm_uframes_t snd_dbri_pointer(struct snd_pcm_substream *substream) |
1bd9debf | 2113 | { |
475675d6 TI |
2114 | struct snd_dbri *dbri = snd_pcm_substream_chip(substream); |
2115 | struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); | |
1bd9debf TI |
2116 | snd_pcm_uframes_t ret; |
2117 | ||
2118 | ret = bytes_to_frames(substream->runtime, info->offset) | |
2119 | % substream->runtime->buffer_size; | |
1be54c82 KH |
2120 | dprintk(D_USR, "I/O pointer: %ld frames of %ld.\n", |
2121 | ret, substream->runtime->buffer_size); | |
1bd9debf TI |
2122 | return ret; |
2123 | } | |
2124 | ||
475675d6 | 2125 | static struct snd_pcm_ops snd_dbri_ops = { |
1bd9debf TI |
2126 | .open = snd_dbri_open, |
2127 | .close = snd_dbri_close, | |
2128 | .ioctl = snd_pcm_lib_ioctl, | |
2129 | .hw_params = snd_dbri_hw_params, | |
2130 | .hw_free = snd_dbri_hw_free, | |
2131 | .prepare = snd_dbri_prepare, | |
2132 | .trigger = snd_dbri_trigger, | |
2133 | .pointer = snd_dbri_pointer, | |
2134 | }; | |
2135 | ||
475675d6 | 2136 | static int __devinit snd_dbri_pcm(struct snd_dbri * dbri) |
1bd9debf | 2137 | { |
475675d6 | 2138 | struct snd_pcm *pcm; |
1bd9debf TI |
2139 | int err; |
2140 | ||
2141 | if ((err = snd_pcm_new(dbri->card, | |
2142 | /* ID */ "sun_dbri", | |
2143 | /* device */ 0, | |
2144 | /* playback count */ 1, | |
2145 | /* capture count */ 1, &pcm)) < 0) | |
2146 | return err; | |
2147 | snd_assert(pcm != NULL, return -EINVAL); | |
2148 | ||
2149 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_dbri_ops); | |
2150 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_dbri_ops); | |
2151 | ||
2152 | pcm->private_data = dbri; | |
2153 | pcm->info_flags = 0; | |
2154 | strcpy(pcm->name, dbri->card->shortname); | |
1bd9debf TI |
2155 | |
2156 | if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, | |
2157 | SNDRV_DMA_TYPE_CONTINUOUS, | |
2158 | snd_dma_continuous_data(GFP_KERNEL), | |
2159 | 64 * 1024, 64 * 1024)) < 0) { | |
2160 | return err; | |
2161 | } | |
2162 | ||
2163 | return 0; | |
2164 | } | |
2165 | ||
2166 | /***************************************************************************** | |
2167 | Mixer interface | |
2168 | *****************************************************************************/ | |
2169 | ||
475675d6 TI |
2170 | static int snd_cs4215_info_volume(struct snd_kcontrol *kcontrol, |
2171 | struct snd_ctl_elem_info *uinfo) | |
1bd9debf TI |
2172 | { |
2173 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
2174 | uinfo->count = 2; | |
2175 | uinfo->value.integer.min = 0; | |
2176 | if (kcontrol->private_value == DBRI_PLAY) { | |
2177 | uinfo->value.integer.max = DBRI_MAX_VOLUME; | |
2178 | } else { | |
2179 | uinfo->value.integer.max = DBRI_MAX_GAIN; | |
2180 | } | |
2181 | return 0; | |
2182 | } | |
2183 | ||
475675d6 TI |
2184 | static int snd_cs4215_get_volume(struct snd_kcontrol *kcontrol, |
2185 | struct snd_ctl_elem_value *ucontrol) | |
1bd9debf | 2186 | { |
475675d6 TI |
2187 | struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol); |
2188 | struct dbri_streaminfo *info; | |
1bd9debf TI |
2189 | snd_assert(dbri != NULL, return -EINVAL); |
2190 | info = &dbri->stream_info[kcontrol->private_value]; | |
2191 | snd_assert(info != NULL, return -EINVAL); | |
2192 | ||
2193 | ucontrol->value.integer.value[0] = info->left_gain; | |
2194 | ucontrol->value.integer.value[1] = info->right_gain; | |
2195 | return 0; | |
2196 | } | |
2197 | ||
475675d6 TI |
2198 | static int snd_cs4215_put_volume(struct snd_kcontrol *kcontrol, |
2199 | struct snd_ctl_elem_value *ucontrol) | |
1bd9debf | 2200 | { |
475675d6 TI |
2201 | struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol); |
2202 | struct dbri_streaminfo *info = &dbri->stream_info[kcontrol->private_value]; | |
1bd9debf TI |
2203 | unsigned long flags; |
2204 | int changed = 0; | |
2205 | ||
2206 | if (info->left_gain != ucontrol->value.integer.value[0]) { | |
2207 | info->left_gain = ucontrol->value.integer.value[0]; | |
2208 | changed = 1; | |
2209 | } | |
2210 | if (info->right_gain != ucontrol->value.integer.value[1]) { | |
2211 | info->right_gain = ucontrol->value.integer.value[1]; | |
2212 | changed = 1; | |
2213 | } | |
2214 | if (changed == 1) { | |
2215 | /* First mute outputs, and wait 1/8000 sec (125 us) | |
2216 | * to make sure this takes. This avoids clicking noises. | |
2217 | */ | |
2218 | spin_lock_irqsave(&dbri->lock, flags); | |
2219 | ||
2220 | cs4215_setdata(dbri, 1); | |
2221 | udelay(125); | |
2222 | cs4215_setdata(dbri, 0); | |
2223 | ||
2224 | spin_unlock_irqrestore(&dbri->lock, flags); | |
2225 | } | |
2226 | return changed; | |
2227 | } | |
2228 | ||
475675d6 TI |
2229 | static int snd_cs4215_info_single(struct snd_kcontrol *kcontrol, |
2230 | struct snd_ctl_elem_info *uinfo) | |
1bd9debf TI |
2231 | { |
2232 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
2233 | ||
2234 | uinfo->type = (mask == 1) ? | |
2235 | SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
2236 | uinfo->count = 1; | |
2237 | uinfo->value.integer.min = 0; | |
2238 | uinfo->value.integer.max = mask; | |
2239 | return 0; | |
2240 | } | |
2241 | ||
475675d6 TI |
2242 | static int snd_cs4215_get_single(struct snd_kcontrol *kcontrol, |
2243 | struct snd_ctl_elem_value *ucontrol) | |
1bd9debf | 2244 | { |
475675d6 | 2245 | struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol); |
1bd9debf TI |
2246 | int elem = kcontrol->private_value & 0xff; |
2247 | int shift = (kcontrol->private_value >> 8) & 0xff; | |
2248 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
2249 | int invert = (kcontrol->private_value >> 24) & 1; | |
2250 | snd_assert(dbri != NULL, return -EINVAL); | |
2251 | ||
2252 | if (elem < 4) { | |
2253 | ucontrol->value.integer.value[0] = | |
2254 | (dbri->mm.data[elem] >> shift) & mask; | |
2255 | } else { | |
2256 | ucontrol->value.integer.value[0] = | |
2257 | (dbri->mm.ctrl[elem - 4] >> shift) & mask; | |
2258 | } | |
2259 | ||
2260 | if (invert == 1) { | |
2261 | ucontrol->value.integer.value[0] = | |
2262 | mask - ucontrol->value.integer.value[0]; | |
2263 | } | |
2264 | return 0; | |
2265 | } | |
2266 | ||
475675d6 TI |
2267 | static int snd_cs4215_put_single(struct snd_kcontrol *kcontrol, |
2268 | struct snd_ctl_elem_value *ucontrol) | |
1bd9debf | 2269 | { |
475675d6 | 2270 | struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol); |
1bd9debf TI |
2271 | unsigned long flags; |
2272 | int elem = kcontrol->private_value & 0xff; | |
2273 | int shift = (kcontrol->private_value >> 8) & 0xff; | |
2274 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
2275 | int invert = (kcontrol->private_value >> 24) & 1; | |
2276 | int changed = 0; | |
2277 | unsigned short val; | |
2278 | snd_assert(dbri != NULL, return -EINVAL); | |
2279 | ||
2280 | val = (ucontrol->value.integer.value[0] & mask); | |
2281 | if (invert == 1) | |
2282 | val = mask - val; | |
2283 | val <<= shift; | |
2284 | ||
2285 | if (elem < 4) { | |
2286 | dbri->mm.data[elem] = (dbri->mm.data[elem] & | |
2287 | ~(mask << shift)) | val; | |
2288 | changed = (val != dbri->mm.data[elem]); | |
2289 | } else { | |
2290 | dbri->mm.ctrl[elem - 4] = (dbri->mm.ctrl[elem - 4] & | |
2291 | ~(mask << shift)) | val; | |
2292 | changed = (val != dbri->mm.ctrl[elem - 4]); | |
2293 | } | |
2294 | ||
2295 | dprintk(D_GEN, "put_single: mask=0x%x, changed=%d, " | |
2296 | "mixer-value=%ld, mm-value=0x%x\n", | |
2297 | mask, changed, ucontrol->value.integer.value[0], | |
2298 | dbri->mm.data[elem & 3]); | |
2299 | ||
2300 | if (changed) { | |
2301 | /* First mute outputs, and wait 1/8000 sec (125 us) | |
2302 | * to make sure this takes. This avoids clicking noises. | |
2303 | */ | |
2304 | spin_lock_irqsave(&dbri->lock, flags); | |
2305 | ||
2306 | cs4215_setdata(dbri, 1); | |
2307 | udelay(125); | |
2308 | cs4215_setdata(dbri, 0); | |
2309 | ||
2310 | spin_unlock_irqrestore(&dbri->lock, flags); | |
2311 | } | |
2312 | return changed; | |
2313 | } | |
2314 | ||
2315 | /* Entries 0-3 map to the 4 data timeslots, entries 4-7 map to the 4 control | |
2316 | timeslots. Shift is the bit offset in the timeslot, mask defines the | |
2317 | number of bits. invert is a boolean for use with attenuation. | |
2318 | */ | |
2319 | #define CS4215_SINGLE(xname, entry, shift, mask, invert) \ | |
2320 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ | |
2321 | .info = snd_cs4215_info_single, \ | |
2322 | .get = snd_cs4215_get_single, .put = snd_cs4215_put_single, \ | |
2323 | .private_value = entry | (shift << 8) | (mask << 16) | (invert << 24) }, | |
2324 | ||
475675d6 | 2325 | static struct snd_kcontrol_new dbri_controls[] __devinitdata = { |
1bd9debf TI |
2326 | { |
2327 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
2328 | .name = "Playback Volume", | |
2329 | .info = snd_cs4215_info_volume, | |
2330 | .get = snd_cs4215_get_volume, | |
2331 | .put = snd_cs4215_put_volume, | |
2332 | .private_value = DBRI_PLAY, | |
2333 | }, | |
2334 | CS4215_SINGLE("Headphone switch", 0, 7, 1, 0) | |
2335 | CS4215_SINGLE("Line out switch", 0, 6, 1, 0) | |
2336 | CS4215_SINGLE("Speaker switch", 1, 6, 1, 0) | |
2337 | { | |
2338 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
2339 | .name = "Capture Volume", | |
2340 | .info = snd_cs4215_info_volume, | |
2341 | .get = snd_cs4215_get_volume, | |
2342 | .put = snd_cs4215_put_volume, | |
2343 | .private_value = DBRI_REC, | |
2344 | }, | |
2345 | /* FIXME: mic/line switch */ | |
2346 | CS4215_SINGLE("Line in switch", 2, 4, 1, 0) | |
2347 | CS4215_SINGLE("High Pass Filter switch", 5, 7, 1, 0) | |
2348 | CS4215_SINGLE("Monitor Volume", 3, 4, 0xf, 1) | |
2349 | CS4215_SINGLE("Mic boost", 4, 4, 1, 1) | |
2350 | }; | |
2351 | ||
475675d6 | 2352 | #define NUM_CS4215_CONTROLS (sizeof(dbri_controls)/sizeof(struct snd_kcontrol_new)) |
1bd9debf | 2353 | |
475675d6 | 2354 | static int __init snd_dbri_mixer(struct snd_dbri * dbri) |
1bd9debf | 2355 | { |
475675d6 | 2356 | struct snd_card *card; |
1bd9debf TI |
2357 | int idx, err; |
2358 | ||
2359 | snd_assert(dbri != NULL && dbri->card != NULL, return -EINVAL); | |
2360 | ||
2361 | card = dbri->card; | |
2362 | strcpy(card->mixername, card->shortname); | |
2363 | ||
2364 | for (idx = 0; idx < NUM_CS4215_CONTROLS; idx++) { | |
2365 | if ((err = snd_ctl_add(card, | |
4338829e | 2366 | snd_ctl_new1(&dbri_controls[idx], dbri))) < 0) |
1bd9debf TI |
2367 | return err; |
2368 | } | |
2369 | ||
2370 | for (idx = DBRI_REC; idx < DBRI_NO_STREAMS; idx++) { | |
2371 | dbri->stream_info[idx].left_gain = 0; | |
2372 | dbri->stream_info[idx].right_gain = 0; | |
1bd9debf TI |
2373 | } |
2374 | ||
2375 | return 0; | |
2376 | } | |
2377 | ||
2378 | /**************************************************************************** | |
2379 | /proc interface | |
2380 | ****************************************************************************/ | |
475675d6 | 2381 | static void dbri_regs_read(struct snd_info_entry * entry, struct snd_info_buffer *buffer) |
1bd9debf | 2382 | { |
475675d6 | 2383 | struct snd_dbri *dbri = entry->private_data; |
1bd9debf TI |
2384 | |
2385 | snd_iprintf(buffer, "REG0: 0x%x\n", sbus_readl(dbri->regs + REG0)); | |
2386 | snd_iprintf(buffer, "REG2: 0x%x\n", sbus_readl(dbri->regs + REG2)); | |
2387 | snd_iprintf(buffer, "REG8: 0x%x\n", sbus_readl(dbri->regs + REG8)); | |
2388 | snd_iprintf(buffer, "REG9: 0x%x\n", sbus_readl(dbri->regs + REG9)); | |
2389 | } | |
2390 | ||
2391 | #ifdef DBRI_DEBUG | |
475675d6 TI |
2392 | static void dbri_debug_read(struct snd_info_entry * entry, |
2393 | struct snd_info_buffer *buffer) | |
1bd9debf | 2394 | { |
475675d6 | 2395 | struct snd_dbri *dbri = entry->private_data; |
1bd9debf TI |
2396 | int pipe; |
2397 | snd_iprintf(buffer, "debug=%d\n", dbri_debug); | |
2398 | ||
1bd9debf TI |
2399 | for (pipe = 0; pipe < 32; pipe++) { |
2400 | if (pipe_active(dbri, pipe)) { | |
2401 | struct dbri_pipe *pptr = &dbri->pipes[pipe]; | |
2402 | snd_iprintf(buffer, | |
2403 | "Pipe %d: %s SDP=0x%x desc=%d, " | |
294a30dc | 2404 | "len=%d next %d\n", |
1bd9debf | 2405 | pipe, |
5fc3a2b2 KH |
2406 | ((pptr->sdp & D_SDP_TO_SER) ? "output" : "input"), |
2407 | pptr->sdp, pptr->desc, | |
294a30dc | 2408 | pptr->length, pptr->nextpipe); |
1bd9debf TI |
2409 | } |
2410 | } | |
2411 | } | |
1bd9debf TI |
2412 | #endif |
2413 | ||
475675d6 | 2414 | void snd_dbri_proc(struct snd_dbri * dbri) |
1bd9debf | 2415 | { |
475675d6 | 2416 | struct snd_info_entry *entry; |
1bd9debf | 2417 | |
8cb7b63f | 2418 | if (! snd_card_proc_new(dbri->card, "regs", &entry)) |
bf850204 | 2419 | snd_info_set_text_ops(entry, dbri, dbri_regs_read); |
1bd9debf TI |
2420 | |
2421 | #ifdef DBRI_DEBUG | |
8cb7b63f | 2422 | if (! snd_card_proc_new(dbri->card, "debug", &entry)) { |
bf850204 | 2423 | snd_info_set_text_ops(entry, dbri, dbri_debug_read); |
8cb7b63f TI |
2424 | entry->mode = S_IFREG | S_IRUGO; /* Readable only. */ |
2425 | } | |
1bd9debf TI |
2426 | #endif |
2427 | } | |
2428 | ||
2429 | /* | |
2430 | **************************************************************************** | |
2431 | **************************** Initialization ******************************** | |
2432 | **************************************************************************** | |
2433 | */ | |
475675d6 | 2434 | static void snd_dbri_free(struct snd_dbri * dbri); |
1bd9debf | 2435 | |
475675d6 | 2436 | static int __init snd_dbri_create(struct snd_card *card, |
1bd9debf TI |
2437 | struct sbus_dev *sdev, |
2438 | struct linux_prom_irqs *irq, int dev) | |
2439 | { | |
475675d6 | 2440 | struct snd_dbri *dbri = card->private_data; |
1bd9debf TI |
2441 | int err; |
2442 | ||
2443 | spin_lock_init(&dbri->lock); | |
2444 | dbri->card = card; | |
2445 | dbri->sdev = sdev; | |
2446 | dbri->irq = irq->pri; | |
1bd9debf TI |
2447 | |
2448 | dbri->dma = sbus_alloc_consistent(sdev, sizeof(struct dbri_dma), | |
2449 | &dbri->dma_dvma); | |
2450 | memset((void *)dbri->dma, 0, sizeof(struct dbri_dma)); | |
2451 | ||
2452 | dprintk(D_GEN, "DMA Cmd Block 0x%p (0x%08x)\n", | |
2453 | dbri->dma, dbri->dma_dvma); | |
2454 | ||
2455 | /* Map the registers into memory. */ | |
2456 | dbri->regs_size = sdev->reg_addrs[0].reg_size; | |
2457 | dbri->regs = sbus_ioremap(&sdev->resource[0], 0, | |
2458 | dbri->regs_size, "DBRI Registers"); | |
2459 | if (!dbri->regs) { | |
2460 | printk(KERN_ERR "DBRI: could not allocate registers\n"); | |
2461 | sbus_free_consistent(sdev, sizeof(struct dbri_dma), | |
2462 | (void *)dbri->dma, dbri->dma_dvma); | |
2463 | return -EIO; | |
2464 | } | |
2465 | ||
65ca68b3 | 2466 | err = request_irq(dbri->irq, snd_dbri_interrupt, IRQF_SHARED, |
1bd9debf TI |
2467 | "DBRI audio", dbri); |
2468 | if (err) { | |
2469 | printk(KERN_ERR "DBRI: Can't get irq %d\n", dbri->irq); | |
2470 | sbus_iounmap(dbri->regs, dbri->regs_size); | |
2471 | sbus_free_consistent(sdev, sizeof(struct dbri_dma), | |
2472 | (void *)dbri->dma, dbri->dma_dvma); | |
2473 | return err; | |
2474 | } | |
2475 | ||
2476 | /* Do low level initialization of the DBRI and CS4215 chips */ | |
2477 | dbri_initialize(dbri); | |
2478 | err = cs4215_init(dbri); | |
2479 | if (err) { | |
2480 | snd_dbri_free(dbri); | |
2481 | return err; | |
2482 | } | |
2483 | ||
2484 | dbri->next = dbri_list; | |
2485 | dbri_list = dbri; | |
2486 | ||
2487 | return 0; | |
2488 | } | |
2489 | ||
475675d6 | 2490 | static void snd_dbri_free(struct snd_dbri * dbri) |
1bd9debf TI |
2491 | { |
2492 | dprintk(D_GEN, "snd_dbri_free\n"); | |
2493 | dbri_reset(dbri); | |
2494 | ||
2495 | if (dbri->irq) | |
2496 | free_irq(dbri->irq, dbri); | |
2497 | ||
2498 | if (dbri->regs) | |
2499 | sbus_iounmap(dbri->regs, dbri->regs_size); | |
2500 | ||
2501 | if (dbri->dma) | |
2502 | sbus_free_consistent(dbri->sdev, sizeof(struct dbri_dma), | |
2503 | (void *)dbri->dma, dbri->dma_dvma); | |
2504 | } | |
2505 | ||
2506 | static int __init dbri_attach(int prom_node, struct sbus_dev *sdev) | |
2507 | { | |
475675d6 | 2508 | struct snd_dbri *dbri; |
1bd9debf TI |
2509 | struct linux_prom_irqs irq; |
2510 | struct resource *rp; | |
475675d6 | 2511 | struct snd_card *card; |
1bd9debf TI |
2512 | static int dev = 0; |
2513 | int err; | |
2514 | ||
2515 | if (sdev->prom_name[9] < 'e') { | |
2516 | printk(KERN_ERR "DBRI: unsupported chip version %c found.\n", | |
2517 | sdev->prom_name[9]); | |
2518 | return -EIO; | |
2519 | } | |
2520 | ||
2521 | if (dev >= SNDRV_CARDS) | |
2522 | return -ENODEV; | |
2523 | if (!enable[dev]) { | |
2524 | dev++; | |
2525 | return -ENOENT; | |
2526 | } | |
2527 | ||
4338829e MH |
2528 | err = prom_getproperty(prom_node, "intr", (char *)&irq, sizeof(irq)); |
2529 | if (err < 0) { | |
2530 | printk(KERN_ERR "DBRI-%d: Firmware node lacks IRQ property.\n", dev); | |
2531 | return -ENODEV; | |
2532 | } | |
1bd9debf TI |
2533 | |
2534 | card = snd_card_new(index[dev], id[dev], THIS_MODULE, | |
475675d6 | 2535 | sizeof(struct snd_dbri)); |
1bd9debf TI |
2536 | if (card == NULL) |
2537 | return -ENOMEM; | |
2538 | ||
2539 | strcpy(card->driver, "DBRI"); | |
2540 | strcpy(card->shortname, "Sun DBRI"); | |
2541 | rp = &sdev->resource[0]; | |
5863aa65 | 2542 | sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d", |
1bd9debf | 2543 | card->shortname, |
aa0a2ddc | 2544 | rp->flags & 0xffL, (unsigned long long)rp->start, irq.pri); |
1bd9debf TI |
2545 | |
2546 | if ((err = snd_dbri_create(card, sdev, &irq, dev)) < 0) { | |
2547 | snd_card_free(card); | |
2548 | return err; | |
2549 | } | |
2550 | ||
475675d6 | 2551 | dbri = card->private_data; |
16dab54b TI |
2552 | if ((err = snd_dbri_pcm(dbri)) < 0) |
2553 | goto _err; | |
1bd9debf | 2554 | |
16dab54b TI |
2555 | if ((err = snd_dbri_mixer(dbri)) < 0) |
2556 | goto _err; | |
1bd9debf TI |
2557 | |
2558 | /* /proc file handling */ | |
2559 | snd_dbri_proc(dbri); | |
2560 | ||
16dab54b TI |
2561 | if ((err = snd_card_register(card)) < 0) |
2562 | goto _err; | |
1bd9debf TI |
2563 | |
2564 | printk(KERN_INFO "audio%d at %p (irq %d) is DBRI(%c)+CS4215(%d)\n", | |
2565 | dev, dbri->regs, | |
5fc3a2b2 | 2566 | dbri->irq, sdev->prom_name[9], dbri->mm.version); |
1bd9debf TI |
2567 | dev++; |
2568 | ||
2569 | return 0; | |
16dab54b TI |
2570 | |
2571 | _err: | |
2572 | snd_dbri_free(dbri); | |
2573 | snd_card_free(card); | |
2574 | return err; | |
1bd9debf TI |
2575 | } |
2576 | ||
2577 | /* Probe for the dbri chip and then attach the driver. */ | |
2578 | static int __init dbri_init(void) | |
2579 | { | |
2580 | struct sbus_bus *sbus; | |
2581 | struct sbus_dev *sdev; | |
2582 | int found = 0; | |
2583 | ||
2584 | /* Probe each SBUS for the DBRI chip(s). */ | |
2585 | for_all_sbusdev(sdev, sbus) { | |
2586 | /* | |
2587 | * The version is coded in the last character | |
2588 | */ | |
2589 | if (!strncmp(sdev->prom_name, "SUNW,DBRI", 9)) { | |
2590 | dprintk(D_GEN, "DBRI: Found %s in SBUS slot %d\n", | |
2591 | sdev->prom_name, sdev->slot); | |
2592 | ||
2593 | if (dbri_attach(sdev->prom_node, sdev) == 0) | |
2594 | found++; | |
2595 | } | |
2596 | } | |
2597 | ||
2598 | return (found > 0) ? 0 : -EIO; | |
2599 | } | |
2600 | ||
2601 | static void __exit dbri_exit(void) | |
2602 | { | |
475675d6 | 2603 | struct snd_dbri *this = dbri_list; |
1bd9debf TI |
2604 | |
2605 | while (this != NULL) { | |
475675d6 TI |
2606 | struct snd_dbri *next = this->next; |
2607 | struct snd_card *card = this->card; | |
1bd9debf TI |
2608 | |
2609 | snd_dbri_free(this); | |
2610 | snd_card_free(card); | |
2611 | this = next; | |
2612 | } | |
2613 | dbri_list = NULL; | |
2614 | } | |
2615 | ||
2616 | module_init(dbri_init); | |
2617 | module_exit(dbri_exit); |