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Commit | Line | Data |
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1a9fc855 MCC |
1 | /* |
2 | * Driver for the Conexant CX25821 PCIe bridge | |
3 | * | |
4 | * Copyright (C) 2009 Conexant Systems Inc. | |
5 | * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com> | |
6 | * Based on SAA713x ALSA driver and CX88 driver | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation, version 2 | |
11 | * | |
12 | * This program 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 this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | */ | |
22 | ||
02b20b0b MCC |
23 | #include <linux/module.h> |
24 | #include <linux/init.h> | |
25 | #include <linux/device.h> | |
26 | #include <linux/interrupt.h> | |
27 | #include <linux/vmalloc.h> | |
28 | #include <linux/dma-mapping.h> | |
29 | #include <linux/pci.h> | |
5a0e3ad6 | 30 | #include <linux/slab.h> |
02b20b0b | 31 | |
8889a8a5 | 32 | #include <linux/delay.h> |
02b20b0b MCC |
33 | #include <sound/core.h> |
34 | #include <sound/pcm.h> | |
35 | #include <sound/pcm_params.h> | |
36 | #include <sound/control.h> | |
37 | #include <sound/initval.h> | |
38 | #include <sound/tlv.h> | |
39 | ||
02b20b0b MCC |
40 | #include "cx25821.h" |
41 | #include "cx25821-reg.h" | |
42 | ||
43 | #define AUDIO_SRAM_CHANNEL SRAM_CH08 | |
44 | ||
8889a8a5 | 45 | #define dprintk(level, fmt, arg...) if (debug >= level) \ |
02b20b0b MCC |
46 | printk(KERN_INFO "%s/1: " fmt, chip->dev->name , ## arg) |
47 | ||
8889a8a5 | 48 | #define dprintk_core(level, fmt, arg...) if (debug >= level) \ |
02b20b0b MCC |
49 | printk(KERN_DEBUG "%s/1: " fmt, chip->dev->name , ## arg) |
50 | ||
02b20b0b MCC |
51 | /**************************************************************************** |
52 | Data type declarations - Can be moded to a header file later | |
53 | ****************************************************************************/ | |
54 | ||
02b20b0b MCC |
55 | static struct snd_card *snd_cx25821_cards[SNDRV_CARDS]; |
56 | static int devno; | |
57 | ||
fecfedeb LP |
58 | struct cx25821_audio_buffer { |
59 | unsigned int bpl; | |
60 | struct btcx_riscmem risc; | |
61 | struct videobuf_dmabuf dma; | |
62 | }; | |
63 | ||
02b20b0b | 64 | struct cx25821_audio_dev { |
1a9fc855 MCC |
65 | struct cx25821_dev *dev; |
66 | struct cx25821_dmaqueue q; | |
02b20b0b MCC |
67 | |
68 | /* pci i/o */ | |
1a9fc855 | 69 | struct pci_dev *pci; |
02b20b0b MCC |
70 | |
71 | /* audio controls */ | |
1a9fc855 | 72 | int irq; |
02b20b0b | 73 | |
1a9fc855 | 74 | struct snd_card *card; |
02b20b0b MCC |
75 | |
76 | unsigned long iobase; | |
1a9fc855 MCC |
77 | spinlock_t reg_lock; |
78 | atomic_t count; | |
02b20b0b | 79 | |
1a9fc855 MCC |
80 | unsigned int dma_size; |
81 | unsigned int period_size; | |
82 | unsigned int num_periods; | |
02b20b0b | 83 | |
1a9fc855 | 84 | struct videobuf_dmabuf *dma_risc; |
02b20b0b | 85 | |
fecfedeb | 86 | struct cx25821_audio_buffer *buf; |
02b20b0b | 87 | |
1a9fc855 | 88 | struct snd_pcm_substream *substream; |
02b20b0b | 89 | }; |
02b20b0b MCC |
90 | |
91 | ||
02b20b0b MCC |
92 | /**************************************************************************** |
93 | Module global static vars | |
94 | ****************************************************************************/ | |
95 | ||
96 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
97 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
8889a8a5 | 98 | static int enable[SNDRV_CARDS] = { 1, [1 ... (SNDRV_CARDS - 1)] = 1 }; |
02b20b0b MCC |
99 | |
100 | module_param_array(enable, bool, NULL, 0444); | |
101 | MODULE_PARM_DESC(enable, "Enable cx25821 soundcard. default enabled."); | |
102 | ||
103 | module_param_array(index, int, NULL, 0444); | |
104 | MODULE_PARM_DESC(index, "Index value for cx25821 capture interface(s)."); | |
105 | ||
02b20b0b MCC |
106 | /**************************************************************************** |
107 | Module macros | |
108 | ****************************************************************************/ | |
109 | ||
110 | MODULE_DESCRIPTION("ALSA driver module for cx25821 based capture cards"); | |
111 | MODULE_AUTHOR("Hiep Huynh"); | |
112 | MODULE_LICENSE("GPL"); | |
8889a8a5 | 113 | MODULE_SUPPORTED_DEVICE("{{Conexant,25821}"); /* "{{Conexant,23881}," */ |
02b20b0b MCC |
114 | |
115 | static unsigned int debug; | |
1a9fc855 MCC |
116 | module_param(debug, int, 0644); |
117 | MODULE_PARM_DESC(debug, "enable debug messages"); | |
02b20b0b MCC |
118 | |
119 | /**************************************************************************** | |
120 | Module specific funtions | |
121 | ****************************************************************************/ | |
122 | /* Constants taken from cx88-reg.h */ | |
123 | #define AUD_INT_DN_RISCI1 (1 << 0) | |
124 | #define AUD_INT_UP_RISCI1 (1 << 1) | |
125 | #define AUD_INT_RDS_DN_RISCI1 (1 << 2) | |
1a9fc855 | 126 | #define AUD_INT_DN_RISCI2 (1 << 4) /* yes, 3 is skipped */ |
02b20b0b MCC |
127 | #define AUD_INT_UP_RISCI2 (1 << 5) |
128 | #define AUD_INT_RDS_DN_RISCI2 (1 << 6) | |
129 | #define AUD_INT_DN_SYNC (1 << 12) | |
130 | #define AUD_INT_UP_SYNC (1 << 13) | |
131 | #define AUD_INT_RDS_DN_SYNC (1 << 14) | |
132 | #define AUD_INT_OPC_ERR (1 << 16) | |
133 | #define AUD_INT_BER_IRQ (1 << 20) | |
134 | #define AUD_INT_MCHG_IRQ (1 << 21) | |
135 | #define GP_COUNT_CONTROL_RESET 0x3 | |
136 | ||
137 | #define PCI_MSK_AUD_EXT (1 << 4) | |
138 | #define PCI_MSK_AUD_INT (1 << 3) | |
139 | /* | |
140 | * BOARD Specific: Sets audio DMA | |
141 | */ | |
142 | ||
8889a8a5 | 143 | static int _cx25821_start_audio_dma(struct cx25821_audio_dev *chip) |
02b20b0b | 144 | { |
fecfedeb | 145 | struct cx25821_audio_buffer *buf = chip->buf; |
1a9fc855 MCC |
146 | struct cx25821_dev *dev = chip->dev; |
147 | struct sram_channel *audio_ch = | |
148 | &cx25821_sram_channels[AUDIO_SRAM_CHANNEL]; | |
02b20b0b MCC |
149 | u32 tmp = 0; |
150 | ||
8889a8a5 | 151 | /* enable output on the GPIO 0 for the MCLK ADC (Audio) */ |
1a9fc855 | 152 | cx25821_set_gpiopin_direction(chip->dev, 0, 0); |
02b20b0b MCC |
153 | |
154 | /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */ | |
1a9fc855 MCC |
155 | cx_clear(AUD_INT_DMA_CTL, |
156 | FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); | |
02b20b0b MCC |
157 | |
158 | /* setup fifo + format - out channel */ | |
1a9fc855 MCC |
159 | cx25821_sram_channel_setup_audio(chip->dev, audio_ch, buf->bpl, |
160 | buf->risc.dma); | |
02b20b0b MCC |
161 | |
162 | /* sets bpl size */ | |
163 | cx_write(AUD_A_LNGTH, buf->bpl); | |
164 | ||
165 | /* reset counter */ | |
8889a8a5 OP |
166 | /* GP_COUNT_CONTROL_RESET = 0x3 */ |
167 | cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET); | |
02b20b0b MCC |
168 | atomic_set(&chip->count, 0); |
169 | ||
8889a8a5 | 170 | /* Set the input mode to 16-bit */ |
1a9fc855 MCC |
171 | tmp = cx_read(AUD_A_CFG); |
172 | cx_write(AUD_A_CFG, | |
173 | tmp | FLD_AUD_DST_PK_MODE | FLD_AUD_DST_ENABLE | | |
174 | FLD_AUD_CLK_ENABLE); | |
02b20b0b | 175 | |
8889a8a5 OP |
176 | /* printk(KERN_INFO "DEBUG: Start audio DMA, %d B/line," |
177 | "cmds_start(0x%x)= %d lines/FIFO, %d periods, " | |
178 | "%d byte buffer\n", buf->bpl, | |
179 | audio_ch->cmds_start, | |
180 | cx_read(audio_ch->cmds_start + 12)>>1, | |
181 | chip->num_periods, buf->bpl *chip->num_periods); | |
182 | */ | |
02b20b0b MCC |
183 | |
184 | /* Enables corresponding bits at AUD_INT_STAT */ | |
1a9fc855 MCC |
185 | cx_write(AUD_A_INT_MSK, |
186 | FLD_AUD_DST_RISCI1 | FLD_AUD_DST_OF | FLD_AUD_DST_SYNC | | |
187 | FLD_AUD_DST_OPC_ERR); | |
02b20b0b MCC |
188 | |
189 | /* Clean any pending interrupt bits already set */ | |
190 | cx_write(AUD_A_INT_STAT, ~0); | |
191 | ||
192 | /* enable audio irqs */ | |
193 | cx_set(PCI_INT_MSK, chip->dev->pci_irqmask | PCI_MSK_AUD_INT); | |
194 | ||
8889a8a5 | 195 | /* Turn on audio downstream fifo and risc enable 0x101 */ |
1a9fc855 MCC |
196 | tmp = cx_read(AUD_INT_DMA_CTL); |
197 | cx_set(AUD_INT_DMA_CTL, | |
198 | tmp | (FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN)); | |
02b20b0b MCC |
199 | |
200 | mdelay(100); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | /* | |
205 | * BOARD Specific: Resets audio DMA | |
206 | */ | |
8889a8a5 | 207 | static int _cx25821_stop_audio_dma(struct cx25821_audio_dev *chip) |
02b20b0b MCC |
208 | { |
209 | struct cx25821_dev *dev = chip->dev; | |
210 | ||
211 | /* stop dma */ | |
1a9fc855 MCC |
212 | cx_clear(AUD_INT_DMA_CTL, |
213 | FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); | |
02b20b0b MCC |
214 | |
215 | /* disable irqs */ | |
216 | cx_clear(PCI_INT_MSK, PCI_MSK_AUD_INT); | |
1a9fc855 MCC |
217 | cx_clear(AUD_A_INT_MSK, |
218 | AUD_INT_OPC_ERR | AUD_INT_DN_SYNC | AUD_INT_DN_RISCI2 | | |
219 | AUD_INT_DN_RISCI1); | |
02b20b0b MCC |
220 | |
221 | return 0; | |
222 | } | |
223 | ||
224 | #define MAX_IRQ_LOOP 50 | |
225 | ||
226 | /* | |
227 | * BOARD Specific: IRQ dma bits | |
228 | */ | |
229 | static char *cx25821_aud_irqs[32] = { | |
1a9fc855 MCC |
230 | "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */ |
231 | NULL, /* reserved */ | |
232 | "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */ | |
233 | NULL, /* reserved */ | |
234 | "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */ | |
235 | NULL, /* reserved */ | |
236 | "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */ | |
237 | NULL, /* reserved */ | |
238 | "opc_err", "par_err", "rip_err", /* 16-18 */ | |
239 | "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */ | |
02b20b0b MCC |
240 | }; |
241 | ||
242 | /* | |
243 | * BOARD Specific: Threats IRQ audio specific calls | |
244 | */ | |
8889a8a5 OP |
245 | static void cx25821_aud_irq(struct cx25821_audio_dev *chip, u32 status, |
246 | u32 mask) | |
02b20b0b MCC |
247 | { |
248 | struct cx25821_dev *dev = chip->dev; | |
249 | ||
8889a8a5 | 250 | if (0 == (status & mask)) |
02b20b0b | 251 | return; |
02b20b0b MCC |
252 | |
253 | cx_write(AUD_A_INT_STAT, status); | |
1a9fc855 | 254 | if (debug > 1 || (status & mask & ~0xff)) |
02b20b0b | 255 | cx25821_print_irqbits(dev->name, "irq aud", |
1a9fc855 MCC |
256 | cx25821_aud_irqs, |
257 | ARRAY_SIZE(cx25821_aud_irqs), status, | |
258 | mask); | |
02b20b0b MCC |
259 | |
260 | /* risc op code error */ | |
261 | if (status & AUD_INT_OPC_ERR) { | |
1a9fc855 MCC |
262 | printk(KERN_WARNING "WARNING %s/1: Audio risc op code error\n", |
263 | dev->name); | |
264 | ||
265 | cx_clear(AUD_INT_DMA_CTL, | |
266 | FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); | |
267 | cx25821_sram_channel_dump_audio(dev, | |
268 | &cx25821_sram_channels | |
269 | [AUDIO_SRAM_CHANNEL]); | |
02b20b0b MCC |
270 | } |
271 | if (status & AUD_INT_DN_SYNC) { | |
1a9fc855 MCC |
272 | printk(KERN_WARNING "WARNING %s: Downstream sync error!\n", |
273 | dev->name); | |
02b20b0b MCC |
274 | cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET); |
275 | return; | |
276 | } | |
277 | ||
02b20b0b MCC |
278 | /* risc1 downstream */ |
279 | if (status & AUD_INT_DN_RISCI1) { | |
280 | atomic_set(&chip->count, cx_read(AUD_A_GPCNT)); | |
281 | snd_pcm_period_elapsed(chip->substream); | |
282 | } | |
283 | } | |
284 | ||
02b20b0b MCC |
285 | /* |
286 | * BOARD Specific: Handles IRQ calls | |
287 | */ | |
288 | static irqreturn_t cx25821_irq(int irq, void *dev_id) | |
289 | { | |
8889a8a5 | 290 | struct cx25821_audio_dev *chip = dev_id; |
02b20b0b MCC |
291 | struct cx25821_dev *dev = chip->dev; |
292 | u32 status, pci_status; | |
293 | u32 audint_status, audint_mask; | |
294 | int loop, handled = 0; | |
295 | int audint_count = 0; | |
296 | ||
02b20b0b | 297 | audint_status = cx_read(AUD_A_INT_STAT); |
1a9fc855 | 298 | audint_mask = cx_read(AUD_A_INT_MSK); |
02b20b0b MCC |
299 | audint_count = cx_read(AUD_A_GPCNT); |
300 | status = cx_read(PCI_INT_STAT); | |
301 | ||
1a9fc855 | 302 | for (loop = 0; loop < 1; loop++) { |
02b20b0b | 303 | status = cx_read(PCI_INT_STAT); |
1a9fc855 | 304 | if (0 == status) { |
02b20b0b MCC |
305 | status = cx_read(PCI_INT_STAT); |
306 | audint_status = cx_read(AUD_A_INT_STAT); | |
307 | audint_mask = cx_read(AUD_A_INT_MSK); | |
308 | ||
1a9fc855 | 309 | if (status) { |
02b20b0b MCC |
310 | handled = 1; |
311 | cx_write(PCI_INT_STAT, status); | |
312 | ||
1a9fc855 MCC |
313 | cx25821_aud_irq(chip, audint_status, |
314 | audint_mask); | |
02b20b0b | 315 | break; |
1a9fc855 | 316 | } else |
02b20b0b MCC |
317 | goto out; |
318 | } | |
319 | ||
320 | handled = 1; | |
321 | cx_write(PCI_INT_STAT, status); | |
322 | ||
323 | cx25821_aud_irq(chip, audint_status, audint_mask); | |
324 | } | |
325 | ||
326 | pci_status = cx_read(PCI_INT_STAT); | |
327 | ||
328 | if (handled) | |
329 | cx_write(PCI_INT_STAT, pci_status); | |
330 | ||
8889a8a5 | 331 | out: |
02b20b0b MCC |
332 | return IRQ_RETVAL(handled); |
333 | } | |
334 | ||
8889a8a5 | 335 | static int dsp_buffer_free(struct cx25821_audio_dev *chip) |
02b20b0b MCC |
336 | { |
337 | BUG_ON(!chip->dma_size); | |
338 | ||
1a9fc855 | 339 | dprintk(2, "Freeing buffer\n"); |
95268403 | 340 | videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc); |
02b20b0b | 341 | videobuf_dma_free(chip->dma_risc); |
1a9fc855 | 342 | btcx_riscmem_free(chip->pci, &chip->buf->risc); |
02b20b0b MCC |
343 | kfree(chip->buf); |
344 | ||
345 | chip->dma_risc = NULL; | |
346 | chip->dma_size = 0; | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | /**************************************************************************** | |
352 | ALSA PCM Interface | |
353 | ****************************************************************************/ | |
354 | ||
355 | /* | |
356 | * Digital hardware definition | |
357 | */ | |
358 | #define DEFAULT_FIFO_SIZE 384 | |
359 | static struct snd_pcm_hardware snd_cx25821_digital_hw = { | |
360 | .info = SNDRV_PCM_INFO_MMAP | | |
1a9fc855 MCC |
361 | SNDRV_PCM_INFO_INTERLEAVED | |
362 | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID, | |
02b20b0b MCC |
363 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
364 | ||
1a9fc855 MCC |
365 | .rates = SNDRV_PCM_RATE_48000, |
366 | .rate_min = 48000, | |
367 | .rate_max = 48000, | |
02b20b0b MCC |
368 | .channels_min = 2, |
369 | .channels_max = 2, | |
370 | /* Analog audio output will be full of clicks and pops if there | |
371 | are not exactly four lines in the SRAM FIFO buffer. */ | |
1a9fc855 MCC |
372 | .period_bytes_min = DEFAULT_FIFO_SIZE / 3, |
373 | .period_bytes_max = DEFAULT_FIFO_SIZE / 3, | |
02b20b0b MCC |
374 | .periods_min = 1, |
375 | .periods_max = AUDIO_LINE_SIZE, | |
8889a8a5 OP |
376 | /* 128 * 128 = 16384 = 1024 * 16 */ |
377 | .buffer_bytes_max = (AUDIO_LINE_SIZE * AUDIO_LINE_SIZE), | |
02b20b0b MCC |
378 | }; |
379 | ||
02b20b0b MCC |
380 | /* |
381 | * audio pcm capture open callback | |
382 | */ | |
383 | static int snd_cx25821_pcm_open(struct snd_pcm_substream *substream) | |
384 | { | |
8889a8a5 | 385 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
386 | struct snd_pcm_runtime *runtime = substream->runtime; |
387 | int err; | |
388 | unsigned int bpl = 0; | |
389 | ||
390 | if (!chip) { | |
391 | printk(KERN_ERR "DEBUG: cx25821 can't find device struct." | |
1a9fc855 | 392 | " Can't proceed with open\n"); |
02b20b0b MCC |
393 | return -ENODEV; |
394 | } | |
395 | ||
1a9fc855 MCC |
396 | err = |
397 | snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS); | |
02b20b0b MCC |
398 | if (err < 0) |
399 | goto _error; | |
400 | ||
401 | chip->substream = substream; | |
402 | ||
403 | runtime->hw = snd_cx25821_digital_hw; | |
404 | ||
1a9fc855 MCC |
405 | if (cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size != |
406 | DEFAULT_FIFO_SIZE) { | |
8889a8a5 OP |
407 | /* since there are 3 audio Clusters */ |
408 | bpl = cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size / 3; | |
1a9fc855 | 409 | bpl &= ~7; /* must be multiple of 8 */ |
02b20b0b | 410 | |
8889a8a5 | 411 | if (bpl > AUDIO_LINE_SIZE) |
02b20b0b | 412 | bpl = AUDIO_LINE_SIZE; |
8889a8a5 | 413 | |
02b20b0b MCC |
414 | runtime->hw.period_bytes_min = bpl; |
415 | runtime->hw.period_bytes_max = bpl; | |
416 | } | |
417 | ||
418 | return 0; | |
8889a8a5 | 419 | _error: |
1a9fc855 | 420 | dprintk(1, "Error opening PCM!\n"); |
02b20b0b MCC |
421 | return err; |
422 | } | |
423 | ||
424 | /* | |
425 | * audio close callback | |
426 | */ | |
427 | static int snd_cx25821_close(struct snd_pcm_substream *substream) | |
428 | { | |
429 | return 0; | |
430 | } | |
431 | ||
432 | /* | |
433 | * hw_params callback | |
434 | */ | |
1a9fc855 MCC |
435 | static int snd_cx25821_hw_params(struct snd_pcm_substream *substream, |
436 | struct snd_pcm_hw_params *hw_params) | |
02b20b0b | 437 | { |
8889a8a5 | 438 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
439 | struct videobuf_dmabuf *dma; |
440 | ||
fecfedeb | 441 | struct cx25821_audio_buffer *buf; |
02b20b0b MCC |
442 | int ret; |
443 | ||
444 | if (substream->runtime->dma_area) { | |
445 | dsp_buffer_free(chip); | |
446 | substream->runtime->dma_area = NULL; | |
447 | } | |
448 | ||
02b20b0b MCC |
449 | chip->period_size = params_period_bytes(hw_params); |
450 | chip->num_periods = params_periods(hw_params); | |
451 | chip->dma_size = chip->period_size * params_periods(hw_params); | |
452 | ||
453 | BUG_ON(!chip->dma_size); | |
1a9fc855 | 454 | BUG_ON(chip->num_periods & (chip->num_periods - 1)); |
02b20b0b | 455 | |
fecfedeb | 456 | buf = kzalloc(sizeof(*buf), GFP_KERNEL); |
02b20b0b MCC |
457 | if (NULL == buf) |
458 | return -ENOMEM; | |
459 | ||
8889a8a5 | 460 | if (chip->period_size > AUDIO_LINE_SIZE) |
02b20b0b | 461 | chip->period_size = AUDIO_LINE_SIZE; |
02b20b0b | 462 | |
1a9fc855 | 463 | buf->bpl = chip->period_size; |
02b20b0b | 464 | |
fecfedeb | 465 | dma = &buf->dma; |
02b20b0b | 466 | videobuf_dma_init(dma); |
02b20b0b | 467 | ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE, |
fecfedeb | 468 | (PAGE_ALIGN(chip->dma_size) >> |
1a9fc855 | 469 | PAGE_SHIFT)); |
02b20b0b MCC |
470 | if (ret < 0) |
471 | goto error; | |
472 | ||
95268403 | 473 | ret = videobuf_dma_map(&chip->pci->dev, dma); |
02b20b0b MCC |
474 | if (ret < 0) |
475 | goto error; | |
476 | ||
1a9fc855 MCC |
477 | ret = |
478 | cx25821_risc_databuffer_audio(chip->pci, &buf->risc, dma->sglist, | |
fecfedeb LP |
479 | chip->period_size, chip->num_periods, |
480 | 1); | |
1a9fc855 MCC |
481 | if (ret < 0) { |
482 | printk(KERN_INFO | |
8889a8a5 | 483 | "DEBUG: ERROR after cx25821_risc_databuffer_audio()\n"); |
02b20b0b MCC |
484 | goto error; |
485 | } | |
486 | ||
02b20b0b | 487 | /* Loop back to start of program */ |
1a9fc855 | 488 | buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); |
02b20b0b | 489 | buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); |
1a9fc855 | 490 | buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ |
02b20b0b | 491 | |
02b20b0b MCC |
492 | chip->buf = buf; |
493 | chip->dma_risc = dma; | |
494 | ||
bb6dbe74 | 495 | substream->runtime->dma_area = chip->dma_risc->vaddr; |
02b20b0b MCC |
496 | substream->runtime->dma_bytes = chip->dma_size; |
497 | substream->runtime->dma_addr = 0; | |
498 | ||
499 | return 0; | |
500 | ||
8889a8a5 | 501 | error: |
02b20b0b MCC |
502 | kfree(buf); |
503 | return ret; | |
504 | } | |
505 | ||
506 | /* | |
507 | * hw free callback | |
508 | */ | |
1a9fc855 | 509 | static int snd_cx25821_hw_free(struct snd_pcm_substream *substream) |
02b20b0b | 510 | { |
8889a8a5 | 511 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
512 | |
513 | if (substream->runtime->dma_area) { | |
514 | dsp_buffer_free(chip); | |
515 | substream->runtime->dma_area = NULL; | |
516 | } | |
517 | ||
518 | return 0; | |
519 | } | |
520 | ||
521 | /* | |
522 | * prepare callback | |
523 | */ | |
524 | static int snd_cx25821_prepare(struct snd_pcm_substream *substream) | |
525 | { | |
526 | return 0; | |
527 | } | |
528 | ||
529 | /* | |
530 | * trigger callback | |
531 | */ | |
1a9fc855 MCC |
532 | static int snd_cx25821_card_trigger(struct snd_pcm_substream *substream, |
533 | int cmd) | |
02b20b0b | 534 | { |
8889a8a5 | 535 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
536 | int err = 0; |
537 | ||
538 | /* Local interrupts are already disabled by ALSA */ | |
539 | spin_lock(&chip->reg_lock); | |
540 | ||
1a9fc855 MCC |
541 | switch (cmd) { |
542 | case SNDRV_PCM_TRIGGER_START: | |
543 | err = _cx25821_start_audio_dma(chip); | |
544 | break; | |
545 | case SNDRV_PCM_TRIGGER_STOP: | |
546 | err = _cx25821_stop_audio_dma(chip); | |
547 | break; | |
548 | default: | |
549 | err = -EINVAL; | |
550 | break; | |
02b20b0b MCC |
551 | } |
552 | ||
553 | spin_unlock(&chip->reg_lock); | |
554 | ||
555 | return err; | |
556 | } | |
557 | ||
558 | /* | |
559 | * pointer callback | |
560 | */ | |
1a9fc855 MCC |
561 | static snd_pcm_uframes_t snd_cx25821_pointer(struct snd_pcm_substream |
562 | *substream) | |
02b20b0b | 563 | { |
8889a8a5 | 564 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
565 | struct snd_pcm_runtime *runtime = substream->runtime; |
566 | u16 count; | |
567 | ||
568 | count = atomic_read(&chip->count); | |
569 | ||
1a9fc855 | 570 | return runtime->period_size * (count & (runtime->periods - 1)); |
02b20b0b MCC |
571 | } |
572 | ||
573 | /* | |
574 | * page callback (needed for mmap) | |
575 | */ | |
576 | static struct page *snd_cx25821_page(struct snd_pcm_substream *substream, | |
1a9fc855 | 577 | unsigned long offset) |
02b20b0b MCC |
578 | { |
579 | void *pageptr = substream->runtime->dma_area + offset; | |
580 | ||
581 | return vmalloc_to_page(pageptr); | |
582 | } | |
583 | ||
584 | /* | |
585 | * operators | |
586 | */ | |
587 | static struct snd_pcm_ops snd_cx25821_pcm_ops = { | |
588 | .open = snd_cx25821_pcm_open, | |
589 | .close = snd_cx25821_close, | |
590 | .ioctl = snd_pcm_lib_ioctl, | |
591 | .hw_params = snd_cx25821_hw_params, | |
592 | .hw_free = snd_cx25821_hw_free, | |
593 | .prepare = snd_cx25821_prepare, | |
594 | .trigger = snd_cx25821_card_trigger, | |
595 | .pointer = snd_cx25821_pointer, | |
596 | .page = snd_cx25821_page, | |
597 | }; | |
598 | ||
02b20b0b | 599 | /* |
8889a8a5 OP |
600 | * ALSA create a PCM device: Called when initializing the board. |
601 | * Sets up the name and hooks up the callbacks | |
02b20b0b | 602 | */ |
8889a8a5 OP |
603 | static int snd_cx25821_pcm(struct cx25821_audio_dev *chip, int device, |
604 | char *name) | |
02b20b0b MCC |
605 | { |
606 | struct snd_pcm *pcm; | |
607 | int err; | |
608 | ||
609 | err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); | |
1a9fc855 MCC |
610 | if (err < 0) { |
611 | printk(KERN_INFO "ERROR: FAILED snd_pcm_new() in %s\n", | |
612 | __func__); | |
02b20b0b MCC |
613 | return err; |
614 | } | |
615 | pcm->private_data = chip; | |
616 | pcm->info_flags = 0; | |
617 | strcpy(pcm->name, name); | |
618 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx25821_pcm_ops); | |
619 | ||
620 | return 0; | |
621 | } | |
622 | ||
02b20b0b MCC |
623 | /**************************************************************************** |
624 | Basic Flow for Sound Devices | |
625 | ****************************************************************************/ | |
626 | ||
627 | /* | |
628 | * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio | |
629 | * Only boards with eeprom and byte 1 at eeprom=1 have it | |
630 | */ | |
631 | ||
f71d7681 | 632 | static const struct pci_device_id cx25821_audio_pci_tbl[] __devinitdata = { |
1a9fc855 MCC |
633 | {0x14f1, 0x0920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
634 | {0,} | |
02b20b0b | 635 | }; |
1a9fc855 | 636 | |
02b20b0b MCC |
637 | MODULE_DEVICE_TABLE(pci, cx25821_audio_pci_tbl); |
638 | ||
1a9fc855 MCC |
639 | /* |
640 | * Not used in the function snd_cx25821_dev_free so removing | |
641 | * from the file. | |
642 | */ | |
02b20b0b | 643 | /* |
8889a8a5 | 644 | static int snd_cx25821_free(struct cx25821_audio_dev *chip) |
02b20b0b MCC |
645 | { |
646 | if (chip->irq >= 0) | |
647 | free_irq(chip->irq, chip); | |
648 | ||
649 | cx25821_dev_unregister(chip->dev); | |
650 | pci_disable_device(chip->pci); | |
651 | ||
652 | return 0; | |
653 | } | |
1a9fc855 | 654 | */ |
02b20b0b MCC |
655 | |
656 | /* | |
657 | * Component Destructor | |
658 | */ | |
1a9fc855 | 659 | static void snd_cx25821_dev_free(struct snd_card *card) |
02b20b0b | 660 | { |
8889a8a5 | 661 | struct cx25821_audio_dev *chip = card->private_data; |
02b20b0b | 662 | |
8889a8a5 | 663 | /* snd_cx25821_free(chip); */ |
02b20b0b MCC |
664 | snd_card_free(chip->card); |
665 | } | |
666 | ||
02b20b0b MCC |
667 | /* |
668 | * Alsa Constructor - Component probe | |
669 | */ | |
670 | static int cx25821_audio_initdev(struct cx25821_dev *dev) | |
671 | { | |
1a9fc855 | 672 | struct snd_card *card; |
8889a8a5 | 673 | struct cx25821_audio_dev *chip; |
1a9fc855 | 674 | int err; |
02b20b0b | 675 | |
1a9fc855 MCC |
676 | if (devno >= SNDRV_CARDS) { |
677 | printk(KERN_INFO "DEBUG ERROR: devno >= SNDRV_CARDS %s\n", | |
678 | __func__); | |
8889a8a5 | 679 | return -ENODEV; |
02b20b0b MCC |
680 | } |
681 | ||
682 | if (!enable[devno]) { | |
683 | ++devno; | |
684 | printk(KERN_INFO "DEBUG ERROR: !enable[devno] %s\n", __func__); | |
8889a8a5 | 685 | return -ENOENT; |
02b20b0b MCC |
686 | } |
687 | ||
53e712d0 | 688 | err = snd_card_create(index[devno], id[devno], THIS_MODULE, |
8889a8a5 | 689 | sizeof(struct cx25821_audio_dev), &card); |
53e712d0 | 690 | if (err < 0) { |
1a9fc855 MCC |
691 | printk(KERN_INFO |
692 | "DEBUG ERROR: cannot create snd_card_new in %s\n", | |
693 | __func__); | |
53e712d0 | 694 | return err; |
02b20b0b MCC |
695 | } |
696 | ||
697 | strcpy(card->driver, "cx25821"); | |
698 | ||
699 | /* Card "creation" */ | |
700 | card->private_free = snd_cx25821_dev_free; | |
ba952d84 | 701 | chip = card->private_data; |
02b20b0b MCC |
702 | spin_lock_init(&chip->reg_lock); |
703 | ||
704 | chip->dev = dev; | |
705 | chip->card = card; | |
706 | chip->pci = dev->pci; | |
707 | chip->iobase = pci_resource_start(dev->pci, 0); | |
708 | ||
02b20b0b MCC |
709 | chip->irq = dev->pci->irq; |
710 | ||
711 | err = request_irq(dev->pci->irq, cx25821_irq, | |
712 | IRQF_SHARED | IRQF_DISABLED, chip->dev->name, chip); | |
713 | ||
714 | if (err < 0) { | |
1a9fc855 MCC |
715 | printk(KERN_ERR "ERROR %s: can't get IRQ %d for ALSA\n", |
716 | chip->dev->name, dev->pci->irq); | |
02b20b0b MCC |
717 | goto error; |
718 | } | |
719 | ||
629dcf23 | 720 | err = snd_cx25821_pcm(chip, 0, "cx25821 Digital"); |
721 | if (err < 0) { | |
1a9fc855 MCC |
722 | printk(KERN_INFO |
723 | "DEBUG ERROR: cannot create snd_cx25821_pcm %s\n", | |
724 | __func__); | |
02b20b0b MCC |
725 | goto error; |
726 | } | |
727 | ||
728 | snd_card_set_dev(card, &chip->pci->dev); | |
729 | ||
02b20b0b | 730 | strcpy(card->shortname, "cx25821"); |
1a9fc855 MCC |
731 | sprintf(card->longname, "%s at 0x%lx irq %d", chip->dev->name, |
732 | chip->iobase, chip->irq); | |
733 | strcpy(card->mixername, "CX25821"); | |
02b20b0b | 734 | |
1a9fc855 MCC |
735 | printk(KERN_INFO "%s/%i: ALSA support for cx25821 boards\n", |
736 | card->driver, devno); | |
02b20b0b MCC |
737 | |
738 | err = snd_card_register(card); | |
1a9fc855 MCC |
739 | if (err < 0) { |
740 | printk(KERN_INFO "DEBUG ERROR: cannot register sound card %s\n", | |
741 | __func__); | |
02b20b0b MCC |
742 | goto error; |
743 | } | |
744 | ||
745 | snd_cx25821_cards[devno] = card; | |
746 | ||
747 | devno++; | |
748 | return 0; | |
749 | ||
8889a8a5 | 750 | error: |
02b20b0b MCC |
751 | snd_card_free(card); |
752 | return err; | |
753 | } | |
754 | ||
02b20b0b MCC |
755 | /**************************************************************************** |
756 | LINUX MODULE INIT | |
757 | ****************************************************************************/ | |
758 | static void cx25821_audio_fini(void) | |
759 | { | |
760 | snd_card_free(snd_cx25821_cards[0]); | |
761 | } | |
762 | ||
763 | /* | |
764 | * Module initializer | |
765 | * | |
766 | * Loops through present saa7134 cards, and assigns an ALSA device | |
767 | * to each one | |
768 | * | |
769 | */ | |
770 | static int cx25821_alsa_init(void) | |
771 | { | |
772 | struct cx25821_dev *dev = NULL; | |
773 | struct list_head *list; | |
774 | ||
1a9fc855 | 775 | list_for_each(list, &cx25821_devlist) { |
02b20b0b MCC |
776 | dev = list_entry(list, struct cx25821_dev, devlist); |
777 | cx25821_audio_initdev(dev); | |
778 | } | |
779 | ||
780 | if (dev == NULL) | |
1a9fc855 MCC |
781 | printk(KERN_INFO |
782 | "cx25821 ERROR ALSA: no cx25821 cards found\n"); | |
02b20b0b MCC |
783 | |
784 | return 0; | |
785 | ||
786 | } | |
787 | ||
788 | late_initcall(cx25821_alsa_init); | |
789 | module_exit(cx25821_audio_fini); | |
790 | ||
791 | /* ----------------------------------------------------------- */ | |
792 | /* | |
793 | * Local variables: | |
794 | * c-basic-offset: 8 | |
795 | * End: | |
796 | */ |