1 // SPDX-License-Identifier: GPL-2.0-only <<
2 /********************************************* 1 /*****************************************************************************
3 * 2 *
4 * Copyright (C) 2008 Cedric Bregardis <cedric 3 * Copyright (C) 2008 Cedric Bregardis <cedric.bregardis@free.fr> and
5 * Jean-Christian Hassler <jhassler@free.fr> 4 * Jean-Christian Hassler <jhassler@free.fr>
6 * 5 *
7 * This file is part of the Audiowerk2 ALSA dr 6 * This file is part of the Audiowerk2 ALSA driver
8 * 7 *
>> 8 * The Audiowerk2 ALSA driver is free software; you can redistribute it and/or
>> 9 * modify it under the terms of the GNU General Public License as published by
>> 10 * the Free Software Foundation; version 2.
>> 11 *
>> 12 * The Audiowerk2 ALSA driver is distributed in the hope that it will be useful,
>> 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> 15 * GNU General Public License for more details.
>> 16 *
>> 17 * You should have received a copy of the GNU General Public License
>> 18 * along with the Audiowerk2 ALSA driver; if not, write to the Free Software
>> 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
>> 20 * USA.
>> 21 *
9 ********************************************* 22 *****************************************************************************/
10 23
11 #define AW2_SAA7146_M 24 #define AW2_SAA7146_M
12 25
13 #include <linux/init.h> 26 #include <linux/init.h>
14 #include <linux/pci.h> 27 #include <linux/pci.h>
15 #include <linux/interrupt.h> 28 #include <linux/interrupt.h>
16 #include <linux/delay.h> 29 #include <linux/delay.h>
17 #include <linux/io.h> 30 #include <linux/io.h>
18 #include <sound/core.h> 31 #include <sound/core.h>
19 #include <sound/initval.h> 32 #include <sound/initval.h>
20 #include <sound/pcm.h> 33 #include <sound/pcm.h>
21 #include <sound/pcm_params.h> 34 #include <sound/pcm_params.h>
22 35
23 #include "saa7146.h" 36 #include "saa7146.h"
24 #include "aw2-saa7146.h" 37 #include "aw2-saa7146.h"
25 38
26 #include "aw2-tsl.c" 39 #include "aw2-tsl.c"
27 40
28 #define WRITEREG(value, addr) writel((value), 41 #define WRITEREG(value, addr) writel((value), chip->base_addr + (addr))
29 #define READREG(addr) readl(chip->base_addr + 42 #define READREG(addr) readl(chip->base_addr + (addr))
30 43
31 static struct snd_aw2_saa7146_cb_param 44 static struct snd_aw2_saa7146_cb_param
32 arr_substream_it_playback_cb[NB_STREAM_PLAYBA 45 arr_substream_it_playback_cb[NB_STREAM_PLAYBACK];
33 static struct snd_aw2_saa7146_cb_param 46 static struct snd_aw2_saa7146_cb_param
34 arr_substream_it_capture_cb[NB_STREAM_CAPTURE 47 arr_substream_it_capture_cb[NB_STREAM_CAPTURE];
35 48
36 static int snd_aw2_saa7146_get_limit(int size) 49 static int snd_aw2_saa7146_get_limit(int size);
37 50
38 /* chip-specific destructor */ 51 /* chip-specific destructor */
39 int snd_aw2_saa7146_free(struct snd_aw2_saa714 52 int snd_aw2_saa7146_free(struct snd_aw2_saa7146 *chip)
40 { 53 {
41 /* disable all irqs */ 54 /* disable all irqs */
42 WRITEREG(0, IER); 55 WRITEREG(0, IER);
43 56
44 /* reset saa7146 */ 57 /* reset saa7146 */
45 WRITEREG((MRST_N << 16), MC1); 58 WRITEREG((MRST_N << 16), MC1);
46 59
47 /* Unset base addr */ 60 /* Unset base addr */
48 chip->base_addr = NULL; 61 chip->base_addr = NULL;
49 62
50 return 0; 63 return 0;
51 } 64 }
52 65
53 void snd_aw2_saa7146_setup(struct snd_aw2_saa7 66 void snd_aw2_saa7146_setup(struct snd_aw2_saa7146 *chip,
54 void __iomem *pci_b 67 void __iomem *pci_base_addr)
55 { 68 {
56 /* set PCI burst/threshold 69 /* set PCI burst/threshold
57 70
58 Burst length definition 71 Burst length definition
59 VALUE BURST LENGTH 72 VALUE BURST LENGTH
60 000 1 Dword 73 000 1 Dword
61 001 2 Dwords 74 001 2 Dwords
62 010 4 Dwords 75 010 4 Dwords
63 011 8 Dwords 76 011 8 Dwords
64 100 16 Dwords 77 100 16 Dwords
65 101 32 Dwords 78 101 32 Dwords
66 110 64 Dwords 79 110 64 Dwords
67 111 128 Dwords 80 111 128 Dwords
68 81
69 Threshold definition 82 Threshold definition
70 VALUE WRITE MODE RE 83 VALUE WRITE MODE READ MODE
71 00 1 Dword of valid data 1 84 00 1 Dword of valid data 1 empty Dword
72 01 4 Dwords of valid data 4 85 01 4 Dwords of valid data 4 empty Dwords
73 10 8 Dwords of valid data 8 86 10 8 Dwords of valid data 8 empty Dwords
74 11 16 Dwords of valid data 16 87 11 16 Dwords of valid data 16 empty Dwords */
75 88
76 unsigned int acon2; 89 unsigned int acon2;
77 unsigned int acon1 = 0; 90 unsigned int acon1 = 0;
78 int i; 91 int i;
79 92
80 /* Set base addr */ 93 /* Set base addr */
81 chip->base_addr = pci_base_addr; 94 chip->base_addr = pci_base_addr;
82 95
83 /* disable all irqs */ 96 /* disable all irqs */
84 WRITEREG(0, IER); 97 WRITEREG(0, IER);
85 98
86 /* reset saa7146 */ 99 /* reset saa7146 */
87 WRITEREG((MRST_N << 16), MC1); 100 WRITEREG((MRST_N << 16), MC1);
88 101
89 /* enable audio interface */ 102 /* enable audio interface */
90 #ifdef __BIG_ENDIAN 103 #ifdef __BIG_ENDIAN
91 acon1 |= A1_SWAP; 104 acon1 |= A1_SWAP;
92 acon1 |= A2_SWAP; 105 acon1 |= A2_SWAP;
93 #endif 106 #endif
94 /* WS0_CTRL, WS0_SYNC: input TSL1, I2S 107 /* WS0_CTRL, WS0_SYNC: input TSL1, I2S */
95 108
96 /* At initialization WS1 and WS2 are d 109 /* At initialization WS1 and WS2 are disabled (configured as input) */
97 acon1 |= 0 * WS1_CTRL; 110 acon1 |= 0 * WS1_CTRL;
98 acon1 |= 0 * WS2_CTRL; 111 acon1 |= 0 * WS2_CTRL;
99 112
100 /* WS4 is not used. So it must not res 113 /* WS4 is not used. So it must not restart A2.
101 This is why it is configured as out 114 This is why it is configured as output (force to low) */
102 acon1 |= 3 * WS4_CTRL; 115 acon1 |= 3 * WS4_CTRL;
103 116
104 /* WS3_CTRL, WS3_SYNC: output TSL2, I2 117 /* WS3_CTRL, WS3_SYNC: output TSL2, I2S */
105 acon1 |= 2 * WS3_CTRL; 118 acon1 |= 2 * WS3_CTRL;
106 119
107 /* A1 and A2 are active and asynchrono 120 /* A1 and A2 are active and asynchronous */
108 acon1 |= 3 * AUDIO_MODE; 121 acon1 |= 3 * AUDIO_MODE;
109 WRITEREG(acon1, ACON1); 122 WRITEREG(acon1, ACON1);
110 123
111 /* The following comes from original w 124 /* The following comes from original windows driver.
112 It is needed to have a correct beha 125 It is needed to have a correct behavior of input and output
113 simultenously, but I don't know why 126 simultenously, but I don't know why ! */
114 WRITEREG(3 * (BurstA1_in) + 3 * (Thres 127 WRITEREG(3 * (BurstA1_in) + 3 * (ThreshA1_in) +
115 3 * (BurstA1_out) + 3 * (Thre 128 3 * (BurstA1_out) + 3 * (ThreshA1_out) +
116 3 * (BurstA2_out) + 3 * (Thre 129 3 * (BurstA2_out) + 3 * (ThreshA2_out), PCI_BT_A);
117 130
118 /* enable audio port pins */ 131 /* enable audio port pins */
119 WRITEREG((EAP << 16) | EAP, MC1); 132 WRITEREG((EAP << 16) | EAP, MC1);
120 133
121 /* enable I2C */ 134 /* enable I2C */
122 WRITEREG((EI2C << 16) | EI2C, MC1); 135 WRITEREG((EI2C << 16) | EI2C, MC1);
123 /* enable interrupts */ 136 /* enable interrupts */
124 WRITEREG(A1_out | A2_out | A1_in | IIC 137 WRITEREG(A1_out | A2_out | A1_in | IIC_S | IIC_E, IER);
125 138
126 /* audio configuration */ 139 /* audio configuration */
127 acon2 = A2_CLKSRC | BCLK1_OEN; 140 acon2 = A2_CLKSRC | BCLK1_OEN;
128 WRITEREG(acon2, ACON2); 141 WRITEREG(acon2, ACON2);
129 142
130 /* By default use analog input */ 143 /* By default use analog input */
131 snd_aw2_saa7146_use_digital_input(chip 144 snd_aw2_saa7146_use_digital_input(chip, 0);
132 145
133 /* TSL setup */ 146 /* TSL setup */
134 for (i = 0; i < 8; ++i) { 147 for (i = 0; i < 8; ++i) {
135 WRITEREG(tsl1[i], TSL1 + (i * 148 WRITEREG(tsl1[i], TSL1 + (i * 4));
136 WRITEREG(tsl2[i], TSL2 + (i * 149 WRITEREG(tsl2[i], TSL2 + (i * 4));
137 } 150 }
138 151
139 } 152 }
140 153
141 void snd_aw2_saa7146_pcm_init_playback(struct 154 void snd_aw2_saa7146_pcm_init_playback(struct snd_aw2_saa7146 *chip,
142 int str 155 int stream_number,
143 unsigne 156 unsigned long dma_addr,
144 unsigne 157 unsigned long period_size,
145 unsigne 158 unsigned long buffer_size)
146 { 159 {
147 unsigned long dw_page, dw_limit; 160 unsigned long dw_page, dw_limit;
148 161
149 /* Configure DMA for substream 162 /* Configure DMA for substream
150 Configuration informations: ALSA ha 163 Configuration informations: ALSA has allocated continuous memory
151 pages. So we don't need to use MMU 164 pages. So we don't need to use MMU of saa7146.
152 */ 165 */
153 166
154 /* No MMU -> nothing to do with PageA1 167 /* No MMU -> nothing to do with PageA1, we only configure the limit of
155 PageAx_out register */ 168 PageAx_out register */
156 /* Disable MMU */ 169 /* Disable MMU */
157 dw_page = (0L << 11); 170 dw_page = (0L << 11);
158 171
159 /* Configure Limit for DMA access. 172 /* Configure Limit for DMA access.
160 The limit register defines an addre 173 The limit register defines an address limit, which generates
161 an interrupt if passed by the actua 174 an interrupt if passed by the actual PCI address pointer.
162 '0001' means an interrupt will be g 175 '0001' means an interrupt will be generated if the lower
163 6 bits (64 bytes) of the PCI addres 176 6 bits (64 bytes) of the PCI address are zero. '0010'
164 defines a limit of 128 bytes, '0011 177 defines a limit of 128 bytes, '0011' one of 256 bytes, and
165 so on up to 1 Mbyte defined by '111 178 so on up to 1 Mbyte defined by '1111'. This interrupt range
166 can be calculated as follows: 179 can be calculated as follows:
167 Range = 2^(5 + Limit) bytes. 180 Range = 2^(5 + Limit) bytes.
168 */ 181 */
169 dw_limit = snd_aw2_saa7146_get_limit(p 182 dw_limit = snd_aw2_saa7146_get_limit(period_size);
170 dw_page |= (dw_limit << 4); 183 dw_page |= (dw_limit << 4);
171 184
172 if (stream_number == 0) { 185 if (stream_number == 0) {
173 WRITEREG(dw_page, PageA2_out); 186 WRITEREG(dw_page, PageA2_out);
174 187
175 /* Base address for DMA transf 188 /* Base address for DMA transfert. */
176 /* This address has been reser 189 /* This address has been reserved by ALSA. */
177 /* This is a physical address 190 /* This is a physical address */
178 WRITEREG(dma_addr, BaseA2_out) 191 WRITEREG(dma_addr, BaseA2_out);
179 192
180 /* Define upper limit for DMA 193 /* Define upper limit for DMA access */
181 WRITEREG(dma_addr + buffer_siz 194 WRITEREG(dma_addr + buffer_size, ProtA2_out);
182 195
183 } else if (stream_number == 1) { 196 } else if (stream_number == 1) {
184 WRITEREG(dw_page, PageA1_out); 197 WRITEREG(dw_page, PageA1_out);
185 198
186 /* Base address for DMA transf 199 /* Base address for DMA transfert. */
187 /* This address has been reser 200 /* This address has been reserved by ALSA. */
188 /* This is a physical address 201 /* This is a physical address */
189 WRITEREG(dma_addr, BaseA1_out) 202 WRITEREG(dma_addr, BaseA1_out);
190 203
191 /* Define upper limit for DMA 204 /* Define upper limit for DMA access */
192 WRITEREG(dma_addr + buffer_siz 205 WRITEREG(dma_addr + buffer_size, ProtA1_out);
193 } else { 206 } else {
194 pr_err("aw2: snd_aw2_saa7146_p 207 pr_err("aw2: snd_aw2_saa7146_pcm_init_playback: "
195 "Substream number is no 208 "Substream number is not 0 or 1 -> not managed\n");
196 } 209 }
197 } 210 }
198 211
199 void snd_aw2_saa7146_pcm_init_capture(struct s 212 void snd_aw2_saa7146_pcm_init_capture(struct snd_aw2_saa7146 *chip,
200 int stre 213 int stream_number, unsigned long dma_addr,
201 unsigned 214 unsigned long period_size,
202 unsigned 215 unsigned long buffer_size)
203 { 216 {
204 unsigned long dw_page, dw_limit; 217 unsigned long dw_page, dw_limit;
205 218
206 /* Configure DMA for substream 219 /* Configure DMA for substream
207 Configuration informations: ALSA ha 220 Configuration informations: ALSA has allocated continuous memory
208 pages. So we don't need to use MMU 221 pages. So we don't need to use MMU of saa7146.
209 */ 222 */
210 223
211 /* No MMU -> nothing to do with PageA1 224 /* No MMU -> nothing to do with PageA1, we only configure the limit of
212 PageAx_out register */ 225 PageAx_out register */
213 /* Disable MMU */ 226 /* Disable MMU */
214 dw_page = (0L << 11); 227 dw_page = (0L << 11);
215 228
216 /* Configure Limit for DMA access. 229 /* Configure Limit for DMA access.
217 The limit register defines an addre 230 The limit register defines an address limit, which generates
218 an interrupt if passed by the actua 231 an interrupt if passed by the actual PCI address pointer.
219 '0001' means an interrupt will be g 232 '0001' means an interrupt will be generated if the lower
220 6 bits (64 bytes) of the PCI addres 233 6 bits (64 bytes) of the PCI address are zero. '0010'
221 defines a limit of 128 bytes, '0011 234 defines a limit of 128 bytes, '0011' one of 256 bytes, and
222 so on up to 1 Mbyte defined by '111 235 so on up to 1 Mbyte defined by '1111'. This interrupt range
223 can be calculated as follows: 236 can be calculated as follows:
224 Range = 2^(5 + Limit) bytes. 237 Range = 2^(5 + Limit) bytes.
225 */ 238 */
226 dw_limit = snd_aw2_saa7146_get_limit(p 239 dw_limit = snd_aw2_saa7146_get_limit(period_size);
227 dw_page |= (dw_limit << 4); 240 dw_page |= (dw_limit << 4);
228 241
229 if (stream_number == 0) { 242 if (stream_number == 0) {
230 WRITEREG(dw_page, PageA1_in); 243 WRITEREG(dw_page, PageA1_in);
231 244
232 /* Base address for DMA transf 245 /* Base address for DMA transfert. */
233 /* This address has been reser 246 /* This address has been reserved by ALSA. */
234 /* This is a physical address 247 /* This is a physical address */
235 WRITEREG(dma_addr, BaseA1_in); 248 WRITEREG(dma_addr, BaseA1_in);
236 249
237 /* Define upper limit for DMA 250 /* Define upper limit for DMA access */
238 WRITEREG(dma_addr + buffer_siz 251 WRITEREG(dma_addr + buffer_size, ProtA1_in);
239 } else { 252 } else {
240 pr_err("aw2: snd_aw2_saa7146_p 253 pr_err("aw2: snd_aw2_saa7146_pcm_init_capture: "
241 "Substream number is no 254 "Substream number is not 0 -> not managed\n");
242 } 255 }
243 } 256 }
244 257
245 void snd_aw2_saa7146_define_it_playback_callba 258 void snd_aw2_saa7146_define_it_playback_callback(unsigned int stream_number,
246 259 snd_aw2_saa7146_it_cb
247 260 p_it_callback,
248 261 void *p_callback_param)
249 { 262 {
250 if (stream_number < NB_STREAM_PLAYBACK 263 if (stream_number < NB_STREAM_PLAYBACK) {
251 arr_substream_it_playback_cb[s 264 arr_substream_it_playback_cb[stream_number].p_it_callback =
252 (snd_aw2_saa7146_it_cb) p_ 265 (snd_aw2_saa7146_it_cb) p_it_callback;
253 arr_substream_it_playback_cb[s 266 arr_substream_it_playback_cb[stream_number].p_callback_param =
254 (void *)p_callback_param; 267 (void *)p_callback_param;
255 } 268 }
256 } 269 }
257 270
258 void snd_aw2_saa7146_define_it_capture_callbac 271 void snd_aw2_saa7146_define_it_capture_callback(unsigned int stream_number,
259 272 snd_aw2_saa7146_it_cb
260 273 p_it_callback,
261 274 void *p_callback_param)
262 { 275 {
263 if (stream_number < NB_STREAM_CAPTURE) 276 if (stream_number < NB_STREAM_CAPTURE) {
264 arr_substream_it_capture_cb[st 277 arr_substream_it_capture_cb[stream_number].p_it_callback =
265 (snd_aw2_saa7146_it_cb) p_ 278 (snd_aw2_saa7146_it_cb) p_it_callback;
266 arr_substream_it_capture_cb[st 279 arr_substream_it_capture_cb[stream_number].p_callback_param =
267 (void *)p_callback_param; 280 (void *)p_callback_param;
268 } 281 }
269 } 282 }
270 283
271 void snd_aw2_saa7146_pcm_trigger_start_playbac 284 void snd_aw2_saa7146_pcm_trigger_start_playback(struct snd_aw2_saa7146 *chip,
272 285 int stream_number)
273 { 286 {
274 unsigned int acon1 = 0; 287 unsigned int acon1 = 0;
275 /* In aw8 driver, dma transfert is alw 288 /* In aw8 driver, dma transfert is always active. It is
276 started and stopped in a larger "sp 289 started and stopped in a larger "space" */
277 acon1 = READREG(ACON1); 290 acon1 = READREG(ACON1);
278 if (stream_number == 0) { 291 if (stream_number == 0) {
279 WRITEREG((TR_E_A2_OUT << 16) | 292 WRITEREG((TR_E_A2_OUT << 16) | TR_E_A2_OUT, MC1);
280 293
281 /* WS2_CTRL, WS2_SYNC: output 294 /* WS2_CTRL, WS2_SYNC: output TSL2, I2S */
282 acon1 |= 2 * WS2_CTRL; 295 acon1 |= 2 * WS2_CTRL;
283 WRITEREG(acon1, ACON1); 296 WRITEREG(acon1, ACON1);
284 297
285 } else if (stream_number == 1) { 298 } else if (stream_number == 1) {
286 WRITEREG((TR_E_A1_OUT << 16) | 299 WRITEREG((TR_E_A1_OUT << 16) | TR_E_A1_OUT, MC1);
287 300
288 /* WS1_CTRL, WS1_SYNC: output 301 /* WS1_CTRL, WS1_SYNC: output TSL1, I2S */
289 acon1 |= 1 * WS1_CTRL; 302 acon1 |= 1 * WS1_CTRL;
290 WRITEREG(acon1, ACON1); 303 WRITEREG(acon1, ACON1);
291 } 304 }
292 } 305 }
293 306
294 void snd_aw2_saa7146_pcm_trigger_stop_playback 307 void snd_aw2_saa7146_pcm_trigger_stop_playback(struct snd_aw2_saa7146 *chip,
295 308 int stream_number)
296 { 309 {
297 unsigned int acon1 = 0; 310 unsigned int acon1 = 0;
298 acon1 = READREG(ACON1); 311 acon1 = READREG(ACON1);
299 if (stream_number == 0) { 312 if (stream_number == 0) {
300 /* WS2_CTRL, WS2_SYNC: output 313 /* WS2_CTRL, WS2_SYNC: output TSL2, I2S */
301 acon1 &= ~(3 * WS2_CTRL); 314 acon1 &= ~(3 * WS2_CTRL);
302 WRITEREG(acon1, ACON1); 315 WRITEREG(acon1, ACON1);
303 316
304 WRITEREG((TR_E_A2_OUT << 16), 317 WRITEREG((TR_E_A2_OUT << 16), MC1);
305 } else if (stream_number == 1) { 318 } else if (stream_number == 1) {
306 /* WS1_CTRL, WS1_SYNC: output 319 /* WS1_CTRL, WS1_SYNC: output TSL1, I2S */
307 acon1 &= ~(3 * WS1_CTRL); 320 acon1 &= ~(3 * WS1_CTRL);
308 WRITEREG(acon1, ACON1); 321 WRITEREG(acon1, ACON1);
309 322
310 WRITEREG((TR_E_A1_OUT << 16), 323 WRITEREG((TR_E_A1_OUT << 16), MC1);
311 } 324 }
312 } 325 }
313 326
314 void snd_aw2_saa7146_pcm_trigger_start_capture 327 void snd_aw2_saa7146_pcm_trigger_start_capture(struct snd_aw2_saa7146 *chip,
315 328 int stream_number)
316 { 329 {
317 /* In aw8 driver, dma transfert is alw 330 /* In aw8 driver, dma transfert is always active. It is
318 started and stopped in a larger "sp 331 started and stopped in a larger "space" */
319 if (stream_number == 0) 332 if (stream_number == 0)
320 WRITEREG((TR_E_A1_IN << 16) | 333 WRITEREG((TR_E_A1_IN << 16) | TR_E_A1_IN, MC1);
321 } 334 }
322 335
323 void snd_aw2_saa7146_pcm_trigger_stop_capture( 336 void snd_aw2_saa7146_pcm_trigger_stop_capture(struct snd_aw2_saa7146 *chip,
324 337 int stream_number)
325 { 338 {
326 if (stream_number == 0) 339 if (stream_number == 0)
327 WRITEREG((TR_E_A1_IN << 16), M 340 WRITEREG((TR_E_A1_IN << 16), MC1);
328 } 341 }
329 342
330 irqreturn_t snd_aw2_saa7146_interrupt(int irq, 343 irqreturn_t snd_aw2_saa7146_interrupt(int irq, void *dev_id)
331 { 344 {
332 unsigned int isr; 345 unsigned int isr;
333 __always_unused unsigned int iicsta; !! 346 unsigned int iicsta;
334 struct snd_aw2_saa7146 *chip = dev_id; 347 struct snd_aw2_saa7146 *chip = dev_id;
335 348
336 isr = READREG(ISR); 349 isr = READREG(ISR);
337 if (!isr) 350 if (!isr)
338 return IRQ_NONE; 351 return IRQ_NONE;
339 352
340 WRITEREG(isr, ISR); 353 WRITEREG(isr, ISR);
341 354
342 if (isr & (IIC_S | IIC_E)) { 355 if (isr & (IIC_S | IIC_E)) {
343 iicsta = READREG(IICSTA); 356 iicsta = READREG(IICSTA);
344 WRITEREG(0x100, IICSTA); 357 WRITEREG(0x100, IICSTA);
345 } 358 }
346 359
347 if (isr & A1_out) { 360 if (isr & A1_out) {
348 if (arr_substream_it_playback_ 361 if (arr_substream_it_playback_cb[1].p_it_callback != NULL) {
349 arr_substream_it_playb 362 arr_substream_it_playback_cb[1].
350 p_it_callback(arr_ 363 p_it_callback(arr_substream_it_playback_cb[1].
351 p_ca 364 p_callback_param);
352 } 365 }
353 } 366 }
354 if (isr & A2_out) { 367 if (isr & A2_out) {
355 if (arr_substream_it_playback_ 368 if (arr_substream_it_playback_cb[0].p_it_callback != NULL) {
356 arr_substream_it_playb 369 arr_substream_it_playback_cb[0].
357 p_it_callback(arr_ 370 p_it_callback(arr_substream_it_playback_cb[0].
358 p_ca 371 p_callback_param);
359 } 372 }
360 373
361 } 374 }
362 if (isr & A1_in) { 375 if (isr & A1_in) {
363 if (arr_substream_it_capture_c 376 if (arr_substream_it_capture_cb[0].p_it_callback != NULL) {
364 arr_substream_it_captu 377 arr_substream_it_capture_cb[0].
365 p_it_callback(arr_ 378 p_it_callback(arr_substream_it_capture_cb[0].
366 p_ca 379 p_callback_param);
367 } 380 }
368 } 381 }
369 return IRQ_HANDLED; 382 return IRQ_HANDLED;
370 } 383 }
371 384
372 unsigned int snd_aw2_saa7146_get_hw_ptr_playba 385 unsigned int snd_aw2_saa7146_get_hw_ptr_playback(struct snd_aw2_saa7146 *chip,
373 386 int stream_number,
374 387 unsigned char *start_addr,
375 388 unsigned int buffer_size)
376 { 389 {
377 long pci_adp = 0; 390 long pci_adp = 0;
378 size_t ptr = 0; 391 size_t ptr = 0;
379 392
380 if (stream_number == 0) { 393 if (stream_number == 0) {
381 pci_adp = READREG(PCI_ADP3); 394 pci_adp = READREG(PCI_ADP3);
382 ptr = pci_adp - (long)start_ad 395 ptr = pci_adp - (long)start_addr;
383 396
384 if (ptr == buffer_size) 397 if (ptr == buffer_size)
385 ptr = 0; 398 ptr = 0;
386 } 399 }
387 if (stream_number == 1) { 400 if (stream_number == 1) {
388 pci_adp = READREG(PCI_ADP1); 401 pci_adp = READREG(PCI_ADP1);
389 ptr = pci_adp - (size_t) start 402 ptr = pci_adp - (size_t) start_addr;
390 403
391 if (ptr == buffer_size) 404 if (ptr == buffer_size)
392 ptr = 0; 405 ptr = 0;
393 } 406 }
394 return ptr; 407 return ptr;
395 } 408 }
396 409
397 unsigned int snd_aw2_saa7146_get_hw_ptr_captur 410 unsigned int snd_aw2_saa7146_get_hw_ptr_capture(struct snd_aw2_saa7146 *chip,
398 411 int stream_number,
399 412 unsigned char *start_addr,
400 413 unsigned int buffer_size)
401 { 414 {
402 size_t pci_adp = 0; 415 size_t pci_adp = 0;
403 size_t ptr = 0; 416 size_t ptr = 0;
404 if (stream_number == 0) { 417 if (stream_number == 0) {
405 pci_adp = READREG(PCI_ADP2); 418 pci_adp = READREG(PCI_ADP2);
406 ptr = pci_adp - (size_t) start 419 ptr = pci_adp - (size_t) start_addr;
407 420
408 if (ptr == buffer_size) 421 if (ptr == buffer_size)
409 ptr = 0; 422 ptr = 0;
410 } 423 }
411 return ptr; 424 return ptr;
412 } 425 }
413 426
414 void snd_aw2_saa7146_use_digital_input(struct 427 void snd_aw2_saa7146_use_digital_input(struct snd_aw2_saa7146 *chip,
415 int use 428 int use_digital)
416 { 429 {
417 /* FIXME: switch between analog and di 430 /* FIXME: switch between analog and digital input does not always work.
418 It can produce a kind of white nois 431 It can produce a kind of white noise. It seams that received data
419 are inverted sometime (endian inver 432 are inverted sometime (endian inversion). Why ? I don't know, maybe
420 a problem of synchronization... How 433 a problem of synchronization... However for the time being I have
421 not found the problem. Workaround: 434 not found the problem. Workaround: switch again (and again) between
422 digital and analog input until it w 435 digital and analog input until it works. */
423 if (use_digital) 436 if (use_digital)
424 WRITEREG(0x40, GPIO_CTRL); 437 WRITEREG(0x40, GPIO_CTRL);
425 else 438 else
426 WRITEREG(0x50, GPIO_CTRL); 439 WRITEREG(0x50, GPIO_CTRL);
427 } 440 }
428 441
429 int snd_aw2_saa7146_is_using_digital_input(str 442 int snd_aw2_saa7146_is_using_digital_input(struct snd_aw2_saa7146 *chip)
430 { 443 {
431 unsigned int reg_val = READREG(GPIO_CT 444 unsigned int reg_val = READREG(GPIO_CTRL);
432 if ((reg_val & 0xFF) == 0x40) 445 if ((reg_val & 0xFF) == 0x40)
433 return 1; 446 return 1;
434 else 447 else
435 return 0; 448 return 0;
436 } 449 }
437 450
438 451
439 static int snd_aw2_saa7146_get_limit(int size) 452 static int snd_aw2_saa7146_get_limit(int size)
440 { 453 {
441 int limitsize = 32; 454 int limitsize = 32;
442 int limit = 0; 455 int limit = 0;
443 while (limitsize < size) { 456 while (limitsize < size) {
444 limitsize *= 2; 457 limitsize *= 2;
445 limit++; 458 limit++;
446 } 459 }
447 return limit; 460 return limit;
448 } 461 }
449 462
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.