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 | ||
36d89f7d JP |
23 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
24 | ||
02b20b0b MCC |
25 | #include <linux/module.h> |
26 | #include <linux/init.h> | |
27 | #include <linux/device.h> | |
28 | #include <linux/interrupt.h> | |
29 | #include <linux/vmalloc.h> | |
30 | #include <linux/dma-mapping.h> | |
31 | #include <linux/pci.h> | |
5a0e3ad6 | 32 | #include <linux/slab.h> |
02b20b0b | 33 | |
8889a8a5 | 34 | #include <linux/delay.h> |
02b20b0b MCC |
35 | #include <sound/core.h> |
36 | #include <sound/pcm.h> | |
37 | #include <sound/pcm_params.h> | |
38 | #include <sound/control.h> | |
39 | #include <sound/initval.h> | |
40 | #include <sound/tlv.h> | |
41 | ||
02b20b0b MCC |
42 | #include "cx25821.h" |
43 | #include "cx25821-reg.h" | |
44 | ||
45 | #define AUDIO_SRAM_CHANNEL SRAM_CH08 | |
46 | ||
36d89f7d JP |
47 | #define dprintk(level, fmt, arg...) \ |
48 | do { \ | |
49 | if (debug >= level) \ | |
50 | pr_info("%s/1: " fmt, chip->dev->name, ##arg); \ | |
51 | } while (0) | |
52 | #define dprintk_core(level, fmt, arg...) \ | |
53 | do { \ | |
54 | if (debug >= level) \ | |
55 | printk(KERN_DEBUG "%s/1: " fmt, chip->dev->name, ##arg); \ | |
56 | } while (0) | |
02b20b0b | 57 | |
02b20b0b MCC |
58 | /**************************************************************************** |
59 | Data type declarations - Can be moded to a header file later | |
60 | ****************************************************************************/ | |
61 | ||
02b20b0b MCC |
62 | static struct snd_card *snd_cx25821_cards[SNDRV_CARDS]; |
63 | static int devno; | |
64 | ||
fecfedeb LP |
65 | struct cx25821_audio_buffer { |
66 | unsigned int bpl; | |
67 | struct btcx_riscmem risc; | |
68 | struct videobuf_dmabuf dma; | |
69 | }; | |
70 | ||
02b20b0b | 71 | struct cx25821_audio_dev { |
1a9fc855 MCC |
72 | struct cx25821_dev *dev; |
73 | struct cx25821_dmaqueue q; | |
02b20b0b MCC |
74 | |
75 | /* pci i/o */ | |
1a9fc855 | 76 | struct pci_dev *pci; |
02b20b0b MCC |
77 | |
78 | /* audio controls */ | |
1a9fc855 | 79 | int irq; |
02b20b0b | 80 | |
1a9fc855 | 81 | struct snd_card *card; |
02b20b0b MCC |
82 | |
83 | unsigned long iobase; | |
1a9fc855 MCC |
84 | spinlock_t reg_lock; |
85 | atomic_t count; | |
02b20b0b | 86 | |
1a9fc855 MCC |
87 | unsigned int dma_size; |
88 | unsigned int period_size; | |
89 | unsigned int num_periods; | |
02b20b0b | 90 | |
1a9fc855 | 91 | struct videobuf_dmabuf *dma_risc; |
02b20b0b | 92 | |
fecfedeb | 93 | struct cx25821_audio_buffer *buf; |
02b20b0b | 94 | |
1a9fc855 | 95 | struct snd_pcm_substream *substream; |
02b20b0b | 96 | }; |
02b20b0b MCC |
97 | |
98 | ||
02b20b0b MCC |
99 | /**************************************************************************** |
100 | Module global static vars | |
101 | ****************************************************************************/ | |
102 | ||
103 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
104 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
90ab5ee9 | 105 | static bool enable[SNDRV_CARDS] = { 1, [1 ... (SNDRV_CARDS - 1)] = 1 }; |
02b20b0b MCC |
106 | |
107 | module_param_array(enable, bool, NULL, 0444); | |
108 | MODULE_PARM_DESC(enable, "Enable cx25821 soundcard. default enabled."); | |
109 | ||
110 | module_param_array(index, int, NULL, 0444); | |
111 | MODULE_PARM_DESC(index, "Index value for cx25821 capture interface(s)."); | |
112 | ||
02b20b0b MCC |
113 | /**************************************************************************** |
114 | Module macros | |
115 | ****************************************************************************/ | |
116 | ||
117 | MODULE_DESCRIPTION("ALSA driver module for cx25821 based capture cards"); | |
118 | MODULE_AUTHOR("Hiep Huynh"); | |
119 | MODULE_LICENSE("GPL"); | |
8889a8a5 | 120 | MODULE_SUPPORTED_DEVICE("{{Conexant,25821}"); /* "{{Conexant,23881}," */ |
02b20b0b MCC |
121 | |
122 | static unsigned int debug; | |
1a9fc855 MCC |
123 | module_param(debug, int, 0644); |
124 | MODULE_PARM_DESC(debug, "enable debug messages"); | |
02b20b0b MCC |
125 | |
126 | /**************************************************************************** | |
127 | Module specific funtions | |
128 | ****************************************************************************/ | |
129 | /* Constants taken from cx88-reg.h */ | |
130 | #define AUD_INT_DN_RISCI1 (1 << 0) | |
131 | #define AUD_INT_UP_RISCI1 (1 << 1) | |
132 | #define AUD_INT_RDS_DN_RISCI1 (1 << 2) | |
1a9fc855 | 133 | #define AUD_INT_DN_RISCI2 (1 << 4) /* yes, 3 is skipped */ |
02b20b0b MCC |
134 | #define AUD_INT_UP_RISCI2 (1 << 5) |
135 | #define AUD_INT_RDS_DN_RISCI2 (1 << 6) | |
136 | #define AUD_INT_DN_SYNC (1 << 12) | |
137 | #define AUD_INT_UP_SYNC (1 << 13) | |
138 | #define AUD_INT_RDS_DN_SYNC (1 << 14) | |
139 | #define AUD_INT_OPC_ERR (1 << 16) | |
140 | #define AUD_INT_BER_IRQ (1 << 20) | |
141 | #define AUD_INT_MCHG_IRQ (1 << 21) | |
142 | #define GP_COUNT_CONTROL_RESET 0x3 | |
143 | ||
144 | #define PCI_MSK_AUD_EXT (1 << 4) | |
145 | #define PCI_MSK_AUD_INT (1 << 3) | |
146 | /* | |
147 | * BOARD Specific: Sets audio DMA | |
148 | */ | |
149 | ||
8889a8a5 | 150 | static int _cx25821_start_audio_dma(struct cx25821_audio_dev *chip) |
02b20b0b | 151 | { |
fecfedeb | 152 | struct cx25821_audio_buffer *buf = chip->buf; |
1a9fc855 MCC |
153 | struct cx25821_dev *dev = chip->dev; |
154 | struct sram_channel *audio_ch = | |
155 | &cx25821_sram_channels[AUDIO_SRAM_CHANNEL]; | |
02b20b0b MCC |
156 | u32 tmp = 0; |
157 | ||
8889a8a5 | 158 | /* enable output on the GPIO 0 for the MCLK ADC (Audio) */ |
1a9fc855 | 159 | cx25821_set_gpiopin_direction(chip->dev, 0, 0); |
02b20b0b MCC |
160 | |
161 | /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */ | |
1a9fc855 MCC |
162 | cx_clear(AUD_INT_DMA_CTL, |
163 | FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); | |
02b20b0b MCC |
164 | |
165 | /* setup fifo + format - out channel */ | |
1a9fc855 MCC |
166 | cx25821_sram_channel_setup_audio(chip->dev, audio_ch, buf->bpl, |
167 | buf->risc.dma); | |
02b20b0b MCC |
168 | |
169 | /* sets bpl size */ | |
170 | cx_write(AUD_A_LNGTH, buf->bpl); | |
171 | ||
172 | /* reset counter */ | |
8889a8a5 OP |
173 | /* GP_COUNT_CONTROL_RESET = 0x3 */ |
174 | cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET); | |
02b20b0b MCC |
175 | atomic_set(&chip->count, 0); |
176 | ||
8889a8a5 | 177 | /* Set the input mode to 16-bit */ |
1a9fc855 | 178 | tmp = cx_read(AUD_A_CFG); |
e5f10621 | 179 | cx_write(AUD_A_CFG, tmp | FLD_AUD_DST_PK_MODE | FLD_AUD_DST_ENABLE | |
1a9fc855 | 180 | FLD_AUD_CLK_ENABLE); |
02b20b0b | 181 | |
36d89f7d JP |
182 | /* |
183 | pr_info("DEBUG: Start audio DMA, %d B/line, cmds_start(0x%x)= %d lines/FIFO, %d periods, %d byte buffer\n", | |
184 | buf->bpl, audio_ch->cmds_start, | |
185 | cx_read(audio_ch->cmds_start + 12)>>1, | |
186 | chip->num_periods, buf->bpl * chip->num_periods); | |
8889a8a5 | 187 | */ |
02b20b0b MCC |
188 | |
189 | /* Enables corresponding bits at AUD_INT_STAT */ | |
e5f10621 LF |
190 | cx_write(AUD_A_INT_MSK, FLD_AUD_DST_RISCI1 | FLD_AUD_DST_OF | |
191 | FLD_AUD_DST_SYNC | FLD_AUD_DST_OPC_ERR); | |
02b20b0b MCC |
192 | |
193 | /* Clean any pending interrupt bits already set */ | |
194 | cx_write(AUD_A_INT_STAT, ~0); | |
195 | ||
196 | /* enable audio irqs */ | |
197 | cx_set(PCI_INT_MSK, chip->dev->pci_irqmask | PCI_MSK_AUD_INT); | |
198 | ||
8889a8a5 | 199 | /* Turn on audio downstream fifo and risc enable 0x101 */ |
1a9fc855 | 200 | tmp = cx_read(AUD_INT_DMA_CTL); |
e5f10621 LF |
201 | cx_set(AUD_INT_DMA_CTL, tmp | |
202 | (FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN)); | |
02b20b0b MCC |
203 | |
204 | mdelay(100); | |
205 | return 0; | |
206 | } | |
207 | ||
208 | /* | |
209 | * BOARD Specific: Resets audio DMA | |
210 | */ | |
8889a8a5 | 211 | static int _cx25821_stop_audio_dma(struct cx25821_audio_dev *chip) |
02b20b0b MCC |
212 | { |
213 | struct cx25821_dev *dev = chip->dev; | |
214 | ||
215 | /* stop dma */ | |
1a9fc855 MCC |
216 | cx_clear(AUD_INT_DMA_CTL, |
217 | FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); | |
02b20b0b MCC |
218 | |
219 | /* disable irqs */ | |
220 | cx_clear(PCI_INT_MSK, PCI_MSK_AUD_INT); | |
e5f10621 LF |
221 | cx_clear(AUD_A_INT_MSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC | |
222 | AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1); | |
02b20b0b MCC |
223 | |
224 | return 0; | |
225 | } | |
226 | ||
227 | #define MAX_IRQ_LOOP 50 | |
228 | ||
229 | /* | |
230 | * BOARD Specific: IRQ dma bits | |
231 | */ | |
232 | static char *cx25821_aud_irqs[32] = { | |
1a9fc855 | 233 | "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */ |
767f1d43 | 234 | NULL, /* reserved */ |
1a9fc855 | 235 | "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */ |
767f1d43 LF |
236 | NULL, /* reserved */ |
237 | "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */ | |
238 | NULL, /* reserved */ | |
239 | "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */ | |
240 | NULL, /* reserved */ | |
241 | "opc_err", "par_err", "rip_err", /* 16-18 */ | |
242 | "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */ | |
02b20b0b MCC |
243 | }; |
244 | ||
245 | /* | |
246 | * BOARD Specific: Threats IRQ audio specific calls | |
247 | */ | |
8889a8a5 OP |
248 | static void cx25821_aud_irq(struct cx25821_audio_dev *chip, u32 status, |
249 | u32 mask) | |
02b20b0b MCC |
250 | { |
251 | struct cx25821_dev *dev = chip->dev; | |
252 | ||
8889a8a5 | 253 | if (0 == (status & mask)) |
02b20b0b | 254 | return; |
02b20b0b MCC |
255 | |
256 | cx_write(AUD_A_INT_STAT, status); | |
1a9fc855 | 257 | if (debug > 1 || (status & mask & ~0xff)) |
e5f10621 LF |
258 | cx25821_print_irqbits(dev->name, "irq aud", cx25821_aud_irqs, |
259 | ARRAY_SIZE(cx25821_aud_irqs), status, mask); | |
02b20b0b MCC |
260 | |
261 | /* risc op code error */ | |
262 | if (status & AUD_INT_OPC_ERR) { | |
36d89f7d | 263 | pr_warn("WARNING %s/1: Audio risc op code error\n", dev->name); |
1a9fc855 MCC |
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, | |
e5f10621 | 268 | &cx25821_sram_channels[AUDIO_SRAM_CHANNEL]); |
02b20b0b MCC |
269 | } |
270 | if (status & AUD_INT_DN_SYNC) { | |
36d89f7d | 271 | pr_warn("WARNING %s: Downstream sync error!\n", dev->name); |
02b20b0b MCC |
272 | cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET); |
273 | return; | |
274 | } | |
275 | ||
02b20b0b MCC |
276 | /* risc1 downstream */ |
277 | if (status & AUD_INT_DN_RISCI1) { | |
278 | atomic_set(&chip->count, cx_read(AUD_A_GPCNT)); | |
279 | snd_pcm_period_elapsed(chip->substream); | |
280 | } | |
281 | } | |
282 | ||
02b20b0b MCC |
283 | /* |
284 | * BOARD Specific: Handles IRQ calls | |
285 | */ | |
286 | static irqreturn_t cx25821_irq(int irq, void *dev_id) | |
287 | { | |
8889a8a5 | 288 | struct cx25821_audio_dev *chip = dev_id; |
02b20b0b MCC |
289 | struct cx25821_dev *dev = chip->dev; |
290 | u32 status, pci_status; | |
291 | u32 audint_status, audint_mask; | |
292 | int loop, handled = 0; | |
02b20b0b | 293 | |
02b20b0b | 294 | audint_status = cx_read(AUD_A_INT_STAT); |
1a9fc855 | 295 | audint_mask = cx_read(AUD_A_INT_MSK); |
02b20b0b MCC |
296 | status = cx_read(PCI_INT_STAT); |
297 | ||
1a9fc855 | 298 | for (loop = 0; loop < 1; loop++) { |
02b20b0b | 299 | status = cx_read(PCI_INT_STAT); |
1a9fc855 | 300 | if (0 == status) { |
02b20b0b MCC |
301 | status = cx_read(PCI_INT_STAT); |
302 | audint_status = cx_read(AUD_A_INT_STAT); | |
303 | audint_mask = cx_read(AUD_A_INT_MSK); | |
304 | ||
1a9fc855 | 305 | if (status) { |
02b20b0b MCC |
306 | handled = 1; |
307 | cx_write(PCI_INT_STAT, status); | |
308 | ||
1a9fc855 MCC |
309 | cx25821_aud_irq(chip, audint_status, |
310 | audint_mask); | |
02b20b0b | 311 | break; |
0ef80072 | 312 | } else { |
02b20b0b | 313 | goto out; |
0ef80072 | 314 | } |
02b20b0b MCC |
315 | } |
316 | ||
317 | handled = 1; | |
318 | cx_write(PCI_INT_STAT, status); | |
319 | ||
320 | cx25821_aud_irq(chip, audint_status, audint_mask); | |
321 | } | |
322 | ||
323 | pci_status = cx_read(PCI_INT_STAT); | |
324 | ||
325 | if (handled) | |
326 | cx_write(PCI_INT_STAT, pci_status); | |
327 | ||
8889a8a5 | 328 | out: |
02b20b0b MCC |
329 | return IRQ_RETVAL(handled); |
330 | } | |
331 | ||
8889a8a5 | 332 | static int dsp_buffer_free(struct cx25821_audio_dev *chip) |
02b20b0b MCC |
333 | { |
334 | BUG_ON(!chip->dma_size); | |
335 | ||
1a9fc855 | 336 | dprintk(2, "Freeing buffer\n"); |
95268403 | 337 | videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc); |
02b20b0b | 338 | videobuf_dma_free(chip->dma_risc); |
1a9fc855 | 339 | btcx_riscmem_free(chip->pci, &chip->buf->risc); |
02b20b0b MCC |
340 | kfree(chip->buf); |
341 | ||
342 | chip->dma_risc = NULL; | |
343 | chip->dma_size = 0; | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
348 | /**************************************************************************** | |
349 | ALSA PCM Interface | |
350 | ****************************************************************************/ | |
351 | ||
352 | /* | |
353 | * Digital hardware definition | |
354 | */ | |
355 | #define DEFAULT_FIFO_SIZE 384 | |
356 | static struct snd_pcm_hardware snd_cx25821_digital_hw = { | |
e5f10621 LF |
357 | .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
358 | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID, | |
02b20b0b MCC |
359 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
360 | ||
1a9fc855 MCC |
361 | .rates = SNDRV_PCM_RATE_48000, |
362 | .rate_min = 48000, | |
363 | .rate_max = 48000, | |
02b20b0b MCC |
364 | .channels_min = 2, |
365 | .channels_max = 2, | |
366 | /* Analog audio output will be full of clicks and pops if there | |
367 | are not exactly four lines in the SRAM FIFO buffer. */ | |
1a9fc855 MCC |
368 | .period_bytes_min = DEFAULT_FIFO_SIZE / 3, |
369 | .period_bytes_max = DEFAULT_FIFO_SIZE / 3, | |
02b20b0b MCC |
370 | .periods_min = 1, |
371 | .periods_max = AUDIO_LINE_SIZE, | |
8889a8a5 OP |
372 | /* 128 * 128 = 16384 = 1024 * 16 */ |
373 | .buffer_bytes_max = (AUDIO_LINE_SIZE * AUDIO_LINE_SIZE), | |
02b20b0b MCC |
374 | }; |
375 | ||
02b20b0b MCC |
376 | /* |
377 | * audio pcm capture open callback | |
378 | */ | |
379 | static int snd_cx25821_pcm_open(struct snd_pcm_substream *substream) | |
380 | { | |
8889a8a5 | 381 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
382 | struct snd_pcm_runtime *runtime = substream->runtime; |
383 | int err; | |
384 | unsigned int bpl = 0; | |
385 | ||
386 | if (!chip) { | |
36d89f7d | 387 | pr_err("DEBUG: cx25821 can't find device struct. Can't proceed with open\n"); |
02b20b0b MCC |
388 | return -ENODEV; |
389 | } | |
390 | ||
e5f10621 LF |
391 | err = snd_pcm_hw_constraint_pow2(runtime, 0, |
392 | SNDRV_PCM_HW_PARAM_PERIODS); | |
02b20b0b MCC |
393 | if (err < 0) |
394 | goto _error; | |
395 | ||
396 | chip->substream = substream; | |
397 | ||
398 | runtime->hw = snd_cx25821_digital_hw; | |
399 | ||
1a9fc855 MCC |
400 | if (cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size != |
401 | DEFAULT_FIFO_SIZE) { | |
8889a8a5 OP |
402 | /* since there are 3 audio Clusters */ |
403 | bpl = cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size / 3; | |
1a9fc855 | 404 | bpl &= ~7; /* must be multiple of 8 */ |
02b20b0b | 405 | |
8889a8a5 | 406 | if (bpl > AUDIO_LINE_SIZE) |
02b20b0b | 407 | bpl = AUDIO_LINE_SIZE; |
8889a8a5 | 408 | |
02b20b0b MCC |
409 | runtime->hw.period_bytes_min = bpl; |
410 | runtime->hw.period_bytes_max = bpl; | |
411 | } | |
412 | ||
413 | return 0; | |
8889a8a5 | 414 | _error: |
1a9fc855 | 415 | dprintk(1, "Error opening PCM!\n"); |
02b20b0b MCC |
416 | return err; |
417 | } | |
418 | ||
419 | /* | |
420 | * audio close callback | |
421 | */ | |
422 | static int snd_cx25821_close(struct snd_pcm_substream *substream) | |
423 | { | |
424 | return 0; | |
425 | } | |
426 | ||
427 | /* | |
428 | * hw_params callback | |
429 | */ | |
1a9fc855 MCC |
430 | static int snd_cx25821_hw_params(struct snd_pcm_substream *substream, |
431 | struct snd_pcm_hw_params *hw_params) | |
02b20b0b | 432 | { |
8889a8a5 | 433 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
434 | struct videobuf_dmabuf *dma; |
435 | ||
fecfedeb | 436 | struct cx25821_audio_buffer *buf; |
02b20b0b MCC |
437 | int ret; |
438 | ||
439 | if (substream->runtime->dma_area) { | |
440 | dsp_buffer_free(chip); | |
441 | substream->runtime->dma_area = NULL; | |
442 | } | |
443 | ||
02b20b0b MCC |
444 | chip->period_size = params_period_bytes(hw_params); |
445 | chip->num_periods = params_periods(hw_params); | |
446 | chip->dma_size = chip->period_size * params_periods(hw_params); | |
447 | ||
448 | BUG_ON(!chip->dma_size); | |
1a9fc855 | 449 | BUG_ON(chip->num_periods & (chip->num_periods - 1)); |
02b20b0b | 450 | |
fecfedeb | 451 | buf = kzalloc(sizeof(*buf), GFP_KERNEL); |
02b20b0b MCC |
452 | if (NULL == buf) |
453 | return -ENOMEM; | |
454 | ||
8889a8a5 | 455 | if (chip->period_size > AUDIO_LINE_SIZE) |
02b20b0b | 456 | chip->period_size = AUDIO_LINE_SIZE; |
02b20b0b | 457 | |
1a9fc855 | 458 | buf->bpl = chip->period_size; |
02b20b0b | 459 | |
fecfedeb | 460 | dma = &buf->dma; |
02b20b0b | 461 | videobuf_dma_init(dma); |
02b20b0b | 462 | ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE, |
e5f10621 | 463 | (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT)); |
02b20b0b MCC |
464 | if (ret < 0) |
465 | goto error; | |
466 | ||
95268403 | 467 | ret = videobuf_dma_map(&chip->pci->dev, dma); |
02b20b0b MCC |
468 | if (ret < 0) |
469 | goto error; | |
470 | ||
e5f10621 LF |
471 | ret = cx25821_risc_databuffer_audio(chip->pci, &buf->risc, dma->sglist, |
472 | chip->period_size, chip->num_periods, 1); | |
1a9fc855 | 473 | if (ret < 0) { |
36d89f7d | 474 | pr_info("DEBUG: ERROR after cx25821_risc_databuffer_audio()\n"); |
02b20b0b MCC |
475 | goto error; |
476 | } | |
477 | ||
02b20b0b | 478 | /* Loop back to start of program */ |
1a9fc855 | 479 | buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); |
02b20b0b | 480 | buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); |
1a9fc855 | 481 | buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ |
02b20b0b | 482 | |
02b20b0b MCC |
483 | chip->buf = buf; |
484 | chip->dma_risc = dma; | |
485 | ||
bb6dbe74 | 486 | substream->runtime->dma_area = chip->dma_risc->vaddr; |
02b20b0b MCC |
487 | substream->runtime->dma_bytes = chip->dma_size; |
488 | substream->runtime->dma_addr = 0; | |
489 | ||
490 | return 0; | |
491 | ||
8889a8a5 | 492 | error: |
02b20b0b MCC |
493 | kfree(buf); |
494 | return ret; | |
495 | } | |
496 | ||
497 | /* | |
498 | * hw free callback | |
499 | */ | |
1a9fc855 | 500 | static int snd_cx25821_hw_free(struct snd_pcm_substream *substream) |
02b20b0b | 501 | { |
8889a8a5 | 502 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
503 | |
504 | if (substream->runtime->dma_area) { | |
505 | dsp_buffer_free(chip); | |
506 | substream->runtime->dma_area = NULL; | |
507 | } | |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
512 | /* | |
513 | * prepare callback | |
514 | */ | |
515 | static int snd_cx25821_prepare(struct snd_pcm_substream *substream) | |
516 | { | |
517 | return 0; | |
518 | } | |
519 | ||
520 | /* | |
521 | * trigger callback | |
522 | */ | |
1a9fc855 MCC |
523 | static int snd_cx25821_card_trigger(struct snd_pcm_substream *substream, |
524 | int cmd) | |
02b20b0b | 525 | { |
8889a8a5 | 526 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
527 | int err = 0; |
528 | ||
529 | /* Local interrupts are already disabled by ALSA */ | |
530 | spin_lock(&chip->reg_lock); | |
531 | ||
1a9fc855 MCC |
532 | switch (cmd) { |
533 | case SNDRV_PCM_TRIGGER_START: | |
534 | err = _cx25821_start_audio_dma(chip); | |
535 | break; | |
536 | case SNDRV_PCM_TRIGGER_STOP: | |
537 | err = _cx25821_stop_audio_dma(chip); | |
538 | break; | |
539 | default: | |
540 | err = -EINVAL; | |
541 | break; | |
02b20b0b MCC |
542 | } |
543 | ||
544 | spin_unlock(&chip->reg_lock); | |
545 | ||
546 | return err; | |
547 | } | |
548 | ||
549 | /* | |
550 | * pointer callback | |
551 | */ | |
1a9fc855 MCC |
552 | static snd_pcm_uframes_t snd_cx25821_pointer(struct snd_pcm_substream |
553 | *substream) | |
02b20b0b | 554 | { |
8889a8a5 | 555 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
556 | struct snd_pcm_runtime *runtime = substream->runtime; |
557 | u16 count; | |
558 | ||
559 | count = atomic_read(&chip->count); | |
560 | ||
1a9fc855 | 561 | return runtime->period_size * (count & (runtime->periods - 1)); |
02b20b0b MCC |
562 | } |
563 | ||
564 | /* | |
565 | * page callback (needed for mmap) | |
566 | */ | |
567 | static struct page *snd_cx25821_page(struct snd_pcm_substream *substream, | |
1a9fc855 | 568 | unsigned long offset) |
02b20b0b MCC |
569 | { |
570 | void *pageptr = substream->runtime->dma_area + offset; | |
571 | ||
572 | return vmalloc_to_page(pageptr); | |
573 | } | |
574 | ||
575 | /* | |
576 | * operators | |
577 | */ | |
578 | static struct snd_pcm_ops snd_cx25821_pcm_ops = { | |
579 | .open = snd_cx25821_pcm_open, | |
580 | .close = snd_cx25821_close, | |
581 | .ioctl = snd_pcm_lib_ioctl, | |
582 | .hw_params = snd_cx25821_hw_params, | |
583 | .hw_free = snd_cx25821_hw_free, | |
584 | .prepare = snd_cx25821_prepare, | |
585 | .trigger = snd_cx25821_card_trigger, | |
586 | .pointer = snd_cx25821_pointer, | |
587 | .page = snd_cx25821_page, | |
588 | }; | |
589 | ||
02b20b0b | 590 | /* |
8889a8a5 OP |
591 | * ALSA create a PCM device: Called when initializing the board. |
592 | * Sets up the name and hooks up the callbacks | |
02b20b0b | 593 | */ |
8889a8a5 OP |
594 | static int snd_cx25821_pcm(struct cx25821_audio_dev *chip, int device, |
595 | char *name) | |
02b20b0b MCC |
596 | { |
597 | struct snd_pcm *pcm; | |
598 | int err; | |
599 | ||
600 | err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); | |
1a9fc855 | 601 | if (err < 0) { |
36d89f7d | 602 | pr_info("ERROR: FAILED snd_pcm_new() in %s\n", __func__); |
02b20b0b MCC |
603 | return err; |
604 | } | |
605 | pcm->private_data = chip; | |
606 | pcm->info_flags = 0; | |
607 | strcpy(pcm->name, name); | |
608 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx25821_pcm_ops); | |
609 | ||
610 | return 0; | |
611 | } | |
612 | ||
02b20b0b MCC |
613 | /**************************************************************************** |
614 | Basic Flow for Sound Devices | |
615 | ****************************************************************************/ | |
616 | ||
617 | /* | |
618 | * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio | |
619 | * Only boards with eeprom and byte 1 at eeprom=1 have it | |
620 | */ | |
621 | ||
94ab8963 | 622 | static DEFINE_PCI_DEVICE_TABLE(cx25821_audio_pci_tbl) = { |
1a9fc855 MCC |
623 | {0x14f1, 0x0920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
624 | {0,} | |
02b20b0b | 625 | }; |
1a9fc855 | 626 | |
02b20b0b MCC |
627 | MODULE_DEVICE_TABLE(pci, cx25821_audio_pci_tbl); |
628 | ||
1a9fc855 MCC |
629 | /* |
630 | * Not used in the function snd_cx25821_dev_free so removing | |
631 | * from the file. | |
632 | */ | |
02b20b0b | 633 | /* |
8889a8a5 | 634 | static int snd_cx25821_free(struct cx25821_audio_dev *chip) |
02b20b0b MCC |
635 | { |
636 | if (chip->irq >= 0) | |
637 | free_irq(chip->irq, chip); | |
638 | ||
639 | cx25821_dev_unregister(chip->dev); | |
640 | pci_disable_device(chip->pci); | |
641 | ||
642 | return 0; | |
643 | } | |
1a9fc855 | 644 | */ |
02b20b0b MCC |
645 | |
646 | /* | |
647 | * Component Destructor | |
648 | */ | |
1a9fc855 | 649 | static void snd_cx25821_dev_free(struct snd_card *card) |
02b20b0b | 650 | { |
8889a8a5 | 651 | struct cx25821_audio_dev *chip = card->private_data; |
02b20b0b | 652 | |
8889a8a5 | 653 | /* snd_cx25821_free(chip); */ |
02b20b0b MCC |
654 | snd_card_free(chip->card); |
655 | } | |
656 | ||
02b20b0b MCC |
657 | /* |
658 | * Alsa Constructor - Component probe | |
659 | */ | |
660 | static int cx25821_audio_initdev(struct cx25821_dev *dev) | |
661 | { | |
1a9fc855 | 662 | struct snd_card *card; |
8889a8a5 | 663 | struct cx25821_audio_dev *chip; |
1a9fc855 | 664 | int err; |
02b20b0b | 665 | |
1a9fc855 | 666 | if (devno >= SNDRV_CARDS) { |
36d89f7d | 667 | pr_info("DEBUG ERROR: devno >= SNDRV_CARDS %s\n", __func__); |
8889a8a5 | 668 | return -ENODEV; |
02b20b0b MCC |
669 | } |
670 | ||
671 | if (!enable[devno]) { | |
672 | ++devno; | |
36d89f7d | 673 | pr_info("DEBUG ERROR: !enable[devno] %s\n", __func__); |
8889a8a5 | 674 | return -ENOENT; |
02b20b0b MCC |
675 | } |
676 | ||
53e712d0 | 677 | err = snd_card_create(index[devno], id[devno], THIS_MODULE, |
4d9304c6 | 678 | sizeof(struct cx25821_audio_dev), &card); |
53e712d0 | 679 | if (err < 0) { |
36d89f7d JP |
680 | pr_info("DEBUG ERROR: cannot create snd_card_new in %s\n", |
681 | __func__); | |
53e712d0 | 682 | return err; |
02b20b0b MCC |
683 | } |
684 | ||
685 | strcpy(card->driver, "cx25821"); | |
686 | ||
687 | /* Card "creation" */ | |
688 | card->private_free = snd_cx25821_dev_free; | |
ba952d84 | 689 | chip = card->private_data; |
02b20b0b MCC |
690 | spin_lock_init(&chip->reg_lock); |
691 | ||
692 | chip->dev = dev; | |
693 | chip->card = card; | |
694 | chip->pci = dev->pci; | |
695 | chip->iobase = pci_resource_start(dev->pci, 0); | |
696 | ||
02b20b0b MCC |
697 | chip->irq = dev->pci->irq; |
698 | ||
699 | err = request_irq(dev->pci->irq, cx25821_irq, | |
18e9351e | 700 | IRQF_SHARED, chip->dev->name, chip); |
02b20b0b MCC |
701 | |
702 | if (err < 0) { | |
e5f10621 LF |
703 | pr_err("ERROR %s: can't get IRQ %d for ALSA\n", chip->dev->name, |
704 | dev->pci->irq); | |
02b20b0b MCC |
705 | goto error; |
706 | } | |
707 | ||
629dcf23 | 708 | err = snd_cx25821_pcm(chip, 0, "cx25821 Digital"); |
709 | if (err < 0) { | |
36d89f7d JP |
710 | pr_info("DEBUG ERROR: cannot create snd_cx25821_pcm %s\n", |
711 | __func__); | |
02b20b0b MCC |
712 | goto error; |
713 | } | |
714 | ||
715 | snd_card_set_dev(card, &chip->pci->dev); | |
716 | ||
02b20b0b | 717 | strcpy(card->shortname, "cx25821"); |
1a9fc855 MCC |
718 | sprintf(card->longname, "%s at 0x%lx irq %d", chip->dev->name, |
719 | chip->iobase, chip->irq); | |
720 | strcpy(card->mixername, "CX25821"); | |
02b20b0b | 721 | |
e5f10621 LF |
722 | pr_info("%s/%i: ALSA support for cx25821 boards\n", card->driver, |
723 | devno); | |
02b20b0b MCC |
724 | |
725 | err = snd_card_register(card); | |
1a9fc855 | 726 | if (err < 0) { |
36d89f7d JP |
727 | pr_info("DEBUG ERROR: cannot register sound card %s\n", |
728 | __func__); | |
02b20b0b MCC |
729 | goto error; |
730 | } | |
731 | ||
732 | snd_cx25821_cards[devno] = card; | |
733 | ||
734 | devno++; | |
735 | return 0; | |
736 | ||
8889a8a5 | 737 | error: |
02b20b0b MCC |
738 | snd_card_free(card); |
739 | return err; | |
740 | } | |
741 | ||
02b20b0b MCC |
742 | /**************************************************************************** |
743 | LINUX MODULE INIT | |
744 | ****************************************************************************/ | |
745 | static void cx25821_audio_fini(void) | |
746 | { | |
747 | snd_card_free(snd_cx25821_cards[0]); | |
748 | } | |
749 | ||
750 | /* | |
751 | * Module initializer | |
752 | * | |
753 | * Loops through present saa7134 cards, and assigns an ALSA device | |
754 | * to each one | |
755 | * | |
756 | */ | |
757 | static int cx25821_alsa_init(void) | |
758 | { | |
759 | struct cx25821_dev *dev = NULL; | |
760 | struct list_head *list; | |
761 | ||
0cd301f1 | 762 | mutex_lock(&cx25821_devlist_mutex); |
1a9fc855 | 763 | list_for_each(list, &cx25821_devlist) { |
02b20b0b MCC |
764 | dev = list_entry(list, struct cx25821_dev, devlist); |
765 | cx25821_audio_initdev(dev); | |
766 | } | |
0cd301f1 | 767 | mutex_unlock(&cx25821_devlist_mutex); |
02b20b0b MCC |
768 | |
769 | if (dev == NULL) | |
36d89f7d | 770 | pr_info("ERROR ALSA: no cx25821 cards found\n"); |
02b20b0b MCC |
771 | |
772 | return 0; | |
773 | ||
774 | } | |
775 | ||
776 | late_initcall(cx25821_alsa_init); | |
777 | module_exit(cx25821_audio_fini); | |
778 | ||
779 | /* ----------------------------------------------------------- */ | |
780 | /* | |
781 | * Local variables: | |
782 | * c-basic-offset: 8 | |
783 | * End: | |
784 | */ |