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Commit | Line | Data |
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50acfb2b | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1a9fc855 MCC |
2 | /* |
3 | * Driver for the Conexant CX25821 PCIe bridge | |
4 | * | |
5 | * Copyright (C) 2009 Conexant Systems Inc. | |
6 | * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com> | |
7 | * Based on SAA713x ALSA driver and CX88 driver | |
1a9fc855 MCC |
8 | */ |
9 | ||
36d89f7d JP |
10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
11 | ||
02b20b0b MCC |
12 | #include <linux/module.h> |
13 | #include <linux/init.h> | |
14 | #include <linux/device.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/vmalloc.h> | |
17 | #include <linux/dma-mapping.h> | |
18 | #include <linux/pci.h> | |
5a0e3ad6 | 19 | #include <linux/slab.h> |
02b20b0b | 20 | |
8889a8a5 | 21 | #include <linux/delay.h> |
02b20b0b MCC |
22 | #include <sound/core.h> |
23 | #include <sound/pcm.h> | |
24 | #include <sound/pcm_params.h> | |
25 | #include <sound/control.h> | |
26 | #include <sound/initval.h> | |
27 | #include <sound/tlv.h> | |
28 | ||
02b20b0b MCC |
29 | #include "cx25821.h" |
30 | #include "cx25821-reg.h" | |
31 | ||
32 | #define AUDIO_SRAM_CHANNEL SRAM_CH08 | |
33 | ||
36d89f7d JP |
34 | #define dprintk(level, fmt, arg...) \ |
35 | do { \ | |
36 | if (debug >= level) \ | |
37 | pr_info("%s/1: " fmt, chip->dev->name, ##arg); \ | |
38 | } while (0) | |
39 | #define dprintk_core(level, fmt, arg...) \ | |
40 | do { \ | |
41 | if (debug >= level) \ | |
42 | printk(KERN_DEBUG "%s/1: " fmt, chip->dev->name, ##arg); \ | |
43 | } while (0) | |
02b20b0b | 44 | |
02b20b0b MCC |
45 | /**************************************************************************** |
46 | Data type declarations - Can be moded to a header file later | |
47 | ****************************************************************************/ | |
48 | ||
02b20b0b MCC |
49 | static int devno; |
50 | ||
fecfedeb LP |
51 | struct cx25821_audio_buffer { |
52 | unsigned int bpl; | |
5ede94c7 | 53 | struct cx25821_riscmem risc; |
8d8e6d60 HV |
54 | void *vaddr; |
55 | struct scatterlist *sglist; | |
99c2ec04 MCC |
56 | int sglen; |
57 | unsigned long nr_pages; | |
fecfedeb LP |
58 | }; |
59 | ||
02b20b0b | 60 | struct cx25821_audio_dev { |
1a9fc855 MCC |
61 | struct cx25821_dev *dev; |
62 | struct cx25821_dmaqueue q; | |
02b20b0b MCC |
63 | |
64 | /* pci i/o */ | |
1a9fc855 | 65 | struct pci_dev *pci; |
02b20b0b MCC |
66 | |
67 | /* audio controls */ | |
1a9fc855 | 68 | int irq; |
02b20b0b | 69 | |
1a9fc855 | 70 | struct snd_card *card; |
02b20b0b MCC |
71 | |
72 | unsigned long iobase; | |
1a9fc855 MCC |
73 | spinlock_t reg_lock; |
74 | atomic_t count; | |
02b20b0b | 75 | |
1a9fc855 MCC |
76 | unsigned int dma_size; |
77 | unsigned int period_size; | |
78 | unsigned int num_periods; | |
02b20b0b | 79 | |
fecfedeb | 80 | struct cx25821_audio_buffer *buf; |
02b20b0b | 81 | |
1a9fc855 | 82 | struct snd_pcm_substream *substream; |
02b20b0b | 83 | }; |
02b20b0b MCC |
84 | |
85 | ||
02b20b0b MCC |
86 | /**************************************************************************** |
87 | Module global static vars | |
88 | ****************************************************************************/ | |
89 | ||
90 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
91 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
d275d935 | 92 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
02b20b0b MCC |
93 | |
94 | module_param_array(enable, bool, NULL, 0444); | |
95 | MODULE_PARM_DESC(enable, "Enable cx25821 soundcard. default enabled."); | |
96 | ||
97 | module_param_array(index, int, NULL, 0444); | |
98 | MODULE_PARM_DESC(index, "Index value for cx25821 capture interface(s)."); | |
99 | ||
02b20b0b MCC |
100 | /**************************************************************************** |
101 | Module macros | |
102 | ****************************************************************************/ | |
103 | ||
104 | MODULE_DESCRIPTION("ALSA driver module for cx25821 based capture cards"); | |
105 | MODULE_AUTHOR("Hiep Huynh"); | |
106 | MODULE_LICENSE("GPL"); | |
02b20b0b MCC |
107 | |
108 | static unsigned int debug; | |
1a9fc855 MCC |
109 | module_param(debug, int, 0644); |
110 | MODULE_PARM_DESC(debug, "enable debug messages"); | |
02b20b0b MCC |
111 | |
112 | /**************************************************************************** | |
16790554 | 113 | Module specific functions |
02b20b0b MCC |
114 | ****************************************************************************/ |
115 | /* Constants taken from cx88-reg.h */ | |
116 | #define AUD_INT_DN_RISCI1 (1 << 0) | |
117 | #define AUD_INT_UP_RISCI1 (1 << 1) | |
118 | #define AUD_INT_RDS_DN_RISCI1 (1 << 2) | |
1a9fc855 | 119 | #define AUD_INT_DN_RISCI2 (1 << 4) /* yes, 3 is skipped */ |
02b20b0b MCC |
120 | #define AUD_INT_UP_RISCI2 (1 << 5) |
121 | #define AUD_INT_RDS_DN_RISCI2 (1 << 6) | |
122 | #define AUD_INT_DN_SYNC (1 << 12) | |
123 | #define AUD_INT_UP_SYNC (1 << 13) | |
124 | #define AUD_INT_RDS_DN_SYNC (1 << 14) | |
125 | #define AUD_INT_OPC_ERR (1 << 16) | |
126 | #define AUD_INT_BER_IRQ (1 << 20) | |
127 | #define AUD_INT_MCHG_IRQ (1 << 21) | |
128 | #define GP_COUNT_CONTROL_RESET 0x3 | |
129 | ||
130 | #define PCI_MSK_AUD_EXT (1 << 4) | |
131 | #define PCI_MSK_AUD_INT (1 << 3) | |
8d8e6d60 | 132 | |
99c2ec04 MCC |
133 | static int cx25821_alsa_dma_init(struct cx25821_audio_dev *chip, |
134 | unsigned long nr_pages) | |
8d8e6d60 HV |
135 | { |
136 | struct cx25821_audio_buffer *buf = chip->buf; | |
137 | struct page *pg; | |
138 | int i; | |
139 | ||
140 | buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT); | |
141 | if (NULL == buf->vaddr) { | |
99c2ec04 | 142 | dprintk(1, "vmalloc_32(%lu pages) failed\n", nr_pages); |
8d8e6d60 HV |
143 | return -ENOMEM; |
144 | } | |
145 | ||
99c2ec04 | 146 | dprintk(1, "vmalloc is at addr 0x%p, size=%lu\n", |
04f849c0 | 147 | buf->vaddr, |
8d8e6d60 HV |
148 | nr_pages << PAGE_SHIFT); |
149 | ||
150 | memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT); | |
151 | buf->nr_pages = nr_pages; | |
152 | ||
fad953ce | 153 | buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages)); |
8d8e6d60 HV |
154 | if (NULL == buf->sglist) |
155 | goto vzalloc_err; | |
156 | ||
157 | sg_init_table(buf->sglist, buf->nr_pages); | |
158 | for (i = 0; i < buf->nr_pages; i++) { | |
159 | pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE); | |
160 | if (NULL == pg) | |
161 | goto vmalloc_to_page_err; | |
162 | sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0); | |
163 | } | |
164 | return 0; | |
165 | ||
166 | vmalloc_to_page_err: | |
167 | vfree(buf->sglist); | |
168 | buf->sglist = NULL; | |
169 | vzalloc_err: | |
170 | vfree(buf->vaddr); | |
171 | buf->vaddr = NULL; | |
172 | return -ENOMEM; | |
173 | } | |
174 | ||
175 | static int cx25821_alsa_dma_map(struct cx25821_audio_dev *dev) | |
176 | { | |
177 | struct cx25821_audio_buffer *buf = dev->buf; | |
178 | ||
179 | buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist, | |
f95fc014 | 180 | buf->nr_pages, DMA_FROM_DEVICE); |
8d8e6d60 HV |
181 | |
182 | if (0 == buf->sglen) { | |
183 | pr_warn("%s: cx25821_alsa_map_sg failed\n", __func__); | |
184 | return -ENOMEM; | |
185 | } | |
186 | return 0; | |
187 | } | |
188 | ||
189 | static int cx25821_alsa_dma_unmap(struct cx25821_audio_dev *dev) | |
190 | { | |
191 | struct cx25821_audio_buffer *buf = dev->buf; | |
192 | ||
193 | if (!buf->sglen) | |
194 | return 0; | |
195 | ||
f95fc014 | 196 | dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->nr_pages, DMA_FROM_DEVICE); |
8d8e6d60 HV |
197 | buf->sglen = 0; |
198 | return 0; | |
199 | } | |
200 | ||
201 | static int cx25821_alsa_dma_free(struct cx25821_audio_buffer *buf) | |
202 | { | |
203 | vfree(buf->sglist); | |
204 | buf->sglist = NULL; | |
205 | vfree(buf->vaddr); | |
206 | buf->vaddr = NULL; | |
207 | return 0; | |
208 | } | |
209 | ||
02b20b0b MCC |
210 | /* |
211 | * BOARD Specific: Sets audio DMA | |
212 | */ | |
213 | ||
8889a8a5 | 214 | static int _cx25821_start_audio_dma(struct cx25821_audio_dev *chip) |
02b20b0b | 215 | { |
fecfedeb | 216 | struct cx25821_audio_buffer *buf = chip->buf; |
1a9fc855 | 217 | struct cx25821_dev *dev = chip->dev; |
bfef0d35 | 218 | const struct sram_channel *audio_ch = |
1a9fc855 | 219 | &cx25821_sram_channels[AUDIO_SRAM_CHANNEL]; |
02b20b0b MCC |
220 | u32 tmp = 0; |
221 | ||
8889a8a5 | 222 | /* enable output on the GPIO 0 for the MCLK ADC (Audio) */ |
1a9fc855 | 223 | cx25821_set_gpiopin_direction(chip->dev, 0, 0); |
02b20b0b MCC |
224 | |
225 | /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */ | |
1a9fc855 MCC |
226 | cx_clear(AUD_INT_DMA_CTL, |
227 | FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); | |
02b20b0b MCC |
228 | |
229 | /* setup fifo + format - out channel */ | |
1a9fc855 MCC |
230 | cx25821_sram_channel_setup_audio(chip->dev, audio_ch, buf->bpl, |
231 | buf->risc.dma); | |
02b20b0b MCC |
232 | |
233 | /* sets bpl size */ | |
234 | cx_write(AUD_A_LNGTH, buf->bpl); | |
235 | ||
236 | /* reset counter */ | |
8889a8a5 OP |
237 | /* GP_COUNT_CONTROL_RESET = 0x3 */ |
238 | cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET); | |
02b20b0b MCC |
239 | atomic_set(&chip->count, 0); |
240 | ||
8889a8a5 | 241 | /* Set the input mode to 16-bit */ |
1a9fc855 | 242 | tmp = cx_read(AUD_A_CFG); |
e5f10621 | 243 | cx_write(AUD_A_CFG, tmp | FLD_AUD_DST_PK_MODE | FLD_AUD_DST_ENABLE | |
1a9fc855 | 244 | FLD_AUD_CLK_ENABLE); |
02b20b0b | 245 | |
36d89f7d JP |
246 | /* |
247 | pr_info("DEBUG: Start audio DMA, %d B/line, cmds_start(0x%x)= %d lines/FIFO, %d periods, %d byte buffer\n", | |
248 | buf->bpl, audio_ch->cmds_start, | |
249 | cx_read(audio_ch->cmds_start + 12)>>1, | |
250 | chip->num_periods, buf->bpl * chip->num_periods); | |
8889a8a5 | 251 | */ |
02b20b0b MCC |
252 | |
253 | /* Enables corresponding bits at AUD_INT_STAT */ | |
e5f10621 LF |
254 | cx_write(AUD_A_INT_MSK, FLD_AUD_DST_RISCI1 | FLD_AUD_DST_OF | |
255 | FLD_AUD_DST_SYNC | FLD_AUD_DST_OPC_ERR); | |
02b20b0b MCC |
256 | |
257 | /* Clean any pending interrupt bits already set */ | |
258 | cx_write(AUD_A_INT_STAT, ~0); | |
259 | ||
260 | /* enable audio irqs */ | |
261 | cx_set(PCI_INT_MSK, chip->dev->pci_irqmask | PCI_MSK_AUD_INT); | |
262 | ||
8889a8a5 | 263 | /* Turn on audio downstream fifo and risc enable 0x101 */ |
1a9fc855 | 264 | tmp = cx_read(AUD_INT_DMA_CTL); |
e5f10621 LF |
265 | cx_set(AUD_INT_DMA_CTL, tmp | |
266 | (FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN)); | |
02b20b0b MCC |
267 | |
268 | mdelay(100); | |
269 | return 0; | |
270 | } | |
271 | ||
272 | /* | |
273 | * BOARD Specific: Resets audio DMA | |
274 | */ | |
8889a8a5 | 275 | static int _cx25821_stop_audio_dma(struct cx25821_audio_dev *chip) |
02b20b0b MCC |
276 | { |
277 | struct cx25821_dev *dev = chip->dev; | |
278 | ||
279 | /* stop dma */ | |
1a9fc855 MCC |
280 | cx_clear(AUD_INT_DMA_CTL, |
281 | FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); | |
02b20b0b MCC |
282 | |
283 | /* disable irqs */ | |
284 | cx_clear(PCI_INT_MSK, PCI_MSK_AUD_INT); | |
e5f10621 LF |
285 | cx_clear(AUD_A_INT_MSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC | |
286 | AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1); | |
02b20b0b MCC |
287 | |
288 | return 0; | |
289 | } | |
290 | ||
291 | #define MAX_IRQ_LOOP 50 | |
292 | ||
293 | /* | |
294 | * BOARD Specific: IRQ dma bits | |
295 | */ | |
296 | static char *cx25821_aud_irqs[32] = { | |
1a9fc855 | 297 | "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */ |
767f1d43 | 298 | NULL, /* reserved */ |
1a9fc855 | 299 | "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */ |
767f1d43 LF |
300 | NULL, /* reserved */ |
301 | "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */ | |
302 | NULL, /* reserved */ | |
303 | "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */ | |
304 | NULL, /* reserved */ | |
305 | "opc_err", "par_err", "rip_err", /* 16-18 */ | |
306 | "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */ | |
02b20b0b MCC |
307 | }; |
308 | ||
309 | /* | |
310 | * BOARD Specific: Threats IRQ audio specific calls | |
311 | */ | |
8889a8a5 OP |
312 | static void cx25821_aud_irq(struct cx25821_audio_dev *chip, u32 status, |
313 | u32 mask) | |
02b20b0b MCC |
314 | { |
315 | struct cx25821_dev *dev = chip->dev; | |
316 | ||
8889a8a5 | 317 | if (0 == (status & mask)) |
02b20b0b | 318 | return; |
02b20b0b MCC |
319 | |
320 | cx_write(AUD_A_INT_STAT, status); | |
1a9fc855 | 321 | if (debug > 1 || (status & mask & ~0xff)) |
e5f10621 LF |
322 | cx25821_print_irqbits(dev->name, "irq aud", cx25821_aud_irqs, |
323 | ARRAY_SIZE(cx25821_aud_irqs), status, mask); | |
02b20b0b MCC |
324 | |
325 | /* risc op code error */ | |
326 | if (status & AUD_INT_OPC_ERR) { | |
36d89f7d | 327 | pr_warn("WARNING %s/1: Audio risc op code error\n", dev->name); |
1a9fc855 MCC |
328 | |
329 | cx_clear(AUD_INT_DMA_CTL, | |
330 | FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN); | |
331 | cx25821_sram_channel_dump_audio(dev, | |
e5f10621 | 332 | &cx25821_sram_channels[AUDIO_SRAM_CHANNEL]); |
02b20b0b MCC |
333 | } |
334 | if (status & AUD_INT_DN_SYNC) { | |
36d89f7d | 335 | pr_warn("WARNING %s: Downstream sync error!\n", dev->name); |
02b20b0b MCC |
336 | cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET); |
337 | return; | |
338 | } | |
339 | ||
02b20b0b MCC |
340 | /* risc1 downstream */ |
341 | if (status & AUD_INT_DN_RISCI1) { | |
342 | atomic_set(&chip->count, cx_read(AUD_A_GPCNT)); | |
343 | snd_pcm_period_elapsed(chip->substream); | |
344 | } | |
345 | } | |
346 | ||
02b20b0b MCC |
347 | /* |
348 | * BOARD Specific: Handles IRQ calls | |
349 | */ | |
350 | static irqreturn_t cx25821_irq(int irq, void *dev_id) | |
351 | { | |
8889a8a5 | 352 | struct cx25821_audio_dev *chip = dev_id; |
02b20b0b MCC |
353 | struct cx25821_dev *dev = chip->dev; |
354 | u32 status, pci_status; | |
355 | u32 audint_status, audint_mask; | |
356 | int loop, handled = 0; | |
02b20b0b | 357 | |
02b20b0b | 358 | audint_status = cx_read(AUD_A_INT_STAT); |
1a9fc855 | 359 | audint_mask = cx_read(AUD_A_INT_MSK); |
02b20b0b MCC |
360 | status = cx_read(PCI_INT_STAT); |
361 | ||
1a9fc855 | 362 | for (loop = 0; loop < 1; loop++) { |
02b20b0b | 363 | status = cx_read(PCI_INT_STAT); |
1a9fc855 | 364 | if (0 == status) { |
02b20b0b MCC |
365 | status = cx_read(PCI_INT_STAT); |
366 | audint_status = cx_read(AUD_A_INT_STAT); | |
367 | audint_mask = cx_read(AUD_A_INT_MSK); | |
368 | ||
1a9fc855 | 369 | if (status) { |
02b20b0b MCC |
370 | handled = 1; |
371 | cx_write(PCI_INT_STAT, status); | |
372 | ||
1a9fc855 MCC |
373 | cx25821_aud_irq(chip, audint_status, |
374 | audint_mask); | |
02b20b0b | 375 | break; |
0ef80072 | 376 | } else { |
02b20b0b | 377 | goto out; |
0ef80072 | 378 | } |
02b20b0b MCC |
379 | } |
380 | ||
381 | handled = 1; | |
382 | cx_write(PCI_INT_STAT, status); | |
383 | ||
384 | cx25821_aud_irq(chip, audint_status, audint_mask); | |
385 | } | |
386 | ||
387 | pci_status = cx_read(PCI_INT_STAT); | |
388 | ||
389 | if (handled) | |
390 | cx_write(PCI_INT_STAT, pci_status); | |
391 | ||
8889a8a5 | 392 | out: |
02b20b0b MCC |
393 | return IRQ_RETVAL(handled); |
394 | } | |
395 | ||
8889a8a5 | 396 | static int dsp_buffer_free(struct cx25821_audio_dev *chip) |
02b20b0b | 397 | { |
5ede94c7 HV |
398 | struct cx25821_riscmem *risc = &chip->buf->risc; |
399 | ||
02b20b0b MCC |
400 | BUG_ON(!chip->dma_size); |
401 | ||
1a9fc855 | 402 | dprintk(2, "Freeing buffer\n"); |
8d8e6d60 HV |
403 | cx25821_alsa_dma_unmap(chip); |
404 | cx25821_alsa_dma_free(chip->buf); | |
5ede94c7 | 405 | pci_free_consistent(chip->pci, risc->size, risc->cpu, risc->dma); |
02b20b0b MCC |
406 | kfree(chip->buf); |
407 | ||
8d8e6d60 | 408 | chip->buf = NULL; |
02b20b0b MCC |
409 | chip->dma_size = 0; |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | /**************************************************************************** | |
415 | ALSA PCM Interface | |
416 | ****************************************************************************/ | |
417 | ||
418 | /* | |
419 | * Digital hardware definition | |
420 | */ | |
421 | #define DEFAULT_FIFO_SIZE 384 | |
47f14314 | 422 | static const struct snd_pcm_hardware snd_cx25821_digital_hw = { |
e5f10621 LF |
423 | .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
424 | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID, | |
02b20b0b MCC |
425 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
426 | ||
1a9fc855 MCC |
427 | .rates = SNDRV_PCM_RATE_48000, |
428 | .rate_min = 48000, | |
429 | .rate_max = 48000, | |
02b20b0b MCC |
430 | .channels_min = 2, |
431 | .channels_max = 2, | |
432 | /* Analog audio output will be full of clicks and pops if there | |
433 | are not exactly four lines in the SRAM FIFO buffer. */ | |
1a9fc855 MCC |
434 | .period_bytes_min = DEFAULT_FIFO_SIZE / 3, |
435 | .period_bytes_max = DEFAULT_FIFO_SIZE / 3, | |
02b20b0b MCC |
436 | .periods_min = 1, |
437 | .periods_max = AUDIO_LINE_SIZE, | |
8889a8a5 OP |
438 | /* 128 * 128 = 16384 = 1024 * 16 */ |
439 | .buffer_bytes_max = (AUDIO_LINE_SIZE * AUDIO_LINE_SIZE), | |
02b20b0b MCC |
440 | }; |
441 | ||
02b20b0b MCC |
442 | /* |
443 | * audio pcm capture open callback | |
444 | */ | |
445 | static int snd_cx25821_pcm_open(struct snd_pcm_substream *substream) | |
446 | { | |
8889a8a5 | 447 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
448 | struct snd_pcm_runtime *runtime = substream->runtime; |
449 | int err; | |
450 | unsigned int bpl = 0; | |
451 | ||
452 | if (!chip) { | |
36d89f7d | 453 | pr_err("DEBUG: cx25821 can't find device struct. Can't proceed with open\n"); |
02b20b0b MCC |
454 | return -ENODEV; |
455 | } | |
456 | ||
e5f10621 LF |
457 | err = snd_pcm_hw_constraint_pow2(runtime, 0, |
458 | SNDRV_PCM_HW_PARAM_PERIODS); | |
02b20b0b MCC |
459 | if (err < 0) |
460 | goto _error; | |
461 | ||
462 | chip->substream = substream; | |
463 | ||
464 | runtime->hw = snd_cx25821_digital_hw; | |
465 | ||
1a9fc855 MCC |
466 | if (cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size != |
467 | DEFAULT_FIFO_SIZE) { | |
8889a8a5 OP |
468 | /* since there are 3 audio Clusters */ |
469 | bpl = cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size / 3; | |
1a9fc855 | 470 | bpl &= ~7; /* must be multiple of 8 */ |
02b20b0b | 471 | |
8889a8a5 | 472 | if (bpl > AUDIO_LINE_SIZE) |
02b20b0b | 473 | bpl = AUDIO_LINE_SIZE; |
8889a8a5 | 474 | |
02b20b0b MCC |
475 | runtime->hw.period_bytes_min = bpl; |
476 | runtime->hw.period_bytes_max = bpl; | |
477 | } | |
478 | ||
479 | return 0; | |
8889a8a5 | 480 | _error: |
1a9fc855 | 481 | dprintk(1, "Error opening PCM!\n"); |
02b20b0b MCC |
482 | return err; |
483 | } | |
484 | ||
485 | /* | |
486 | * audio close callback | |
487 | */ | |
488 | static int snd_cx25821_close(struct snd_pcm_substream *substream) | |
489 | { | |
490 | return 0; | |
491 | } | |
492 | ||
493 | /* | |
494 | * hw_params callback | |
495 | */ | |
1a9fc855 MCC |
496 | static int snd_cx25821_hw_params(struct snd_pcm_substream *substream, |
497 | struct snd_pcm_hw_params *hw_params) | |
02b20b0b | 498 | { |
8889a8a5 | 499 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
fecfedeb | 500 | struct cx25821_audio_buffer *buf; |
02b20b0b MCC |
501 | int ret; |
502 | ||
503 | if (substream->runtime->dma_area) { | |
504 | dsp_buffer_free(chip); | |
505 | substream->runtime->dma_area = NULL; | |
506 | } | |
507 | ||
02b20b0b MCC |
508 | chip->period_size = params_period_bytes(hw_params); |
509 | chip->num_periods = params_periods(hw_params); | |
510 | chip->dma_size = chip->period_size * params_periods(hw_params); | |
511 | ||
512 | BUG_ON(!chip->dma_size); | |
1a9fc855 | 513 | BUG_ON(chip->num_periods & (chip->num_periods - 1)); |
02b20b0b | 514 | |
fecfedeb | 515 | buf = kzalloc(sizeof(*buf), GFP_KERNEL); |
02b20b0b MCC |
516 | if (NULL == buf) |
517 | return -ENOMEM; | |
518 | ||
8889a8a5 | 519 | if (chip->period_size > AUDIO_LINE_SIZE) |
02b20b0b | 520 | chip->period_size = AUDIO_LINE_SIZE; |
02b20b0b | 521 | |
1a9fc855 | 522 | buf->bpl = chip->period_size; |
8d8e6d60 | 523 | chip->buf = buf; |
02b20b0b | 524 | |
8d8e6d60 | 525 | ret = cx25821_alsa_dma_init(chip, |
e5f10621 | 526 | (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT)); |
02b20b0b MCC |
527 | if (ret < 0) |
528 | goto error; | |
529 | ||
8d8e6d60 | 530 | ret = cx25821_alsa_dma_map(chip); |
02b20b0b MCC |
531 | if (ret < 0) |
532 | goto error; | |
533 | ||
8d8e6d60 | 534 | ret = cx25821_risc_databuffer_audio(chip->pci, &buf->risc, buf->sglist, |
e5f10621 | 535 | chip->period_size, chip->num_periods, 1); |
1a9fc855 | 536 | if (ret < 0) { |
36d89f7d | 537 | pr_info("DEBUG: ERROR after cx25821_risc_databuffer_audio()\n"); |
02b20b0b MCC |
538 | goto error; |
539 | } | |
540 | ||
02b20b0b | 541 | /* Loop back to start of program */ |
1a9fc855 | 542 | buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); |
02b20b0b | 543 | buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); |
1a9fc855 | 544 | buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ |
02b20b0b | 545 | |
8d8e6d60 | 546 | substream->runtime->dma_area = chip->buf->vaddr; |
02b20b0b MCC |
547 | substream->runtime->dma_bytes = chip->dma_size; |
548 | substream->runtime->dma_addr = 0; | |
549 | ||
550 | return 0; | |
551 | ||
8889a8a5 | 552 | error: |
8d8e6d60 | 553 | chip->buf = NULL; |
02b20b0b MCC |
554 | kfree(buf); |
555 | return ret; | |
556 | } | |
557 | ||
558 | /* | |
559 | * hw free callback | |
560 | */ | |
1a9fc855 | 561 | static int snd_cx25821_hw_free(struct snd_pcm_substream *substream) |
02b20b0b | 562 | { |
8889a8a5 | 563 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
564 | |
565 | if (substream->runtime->dma_area) { | |
566 | dsp_buffer_free(chip); | |
567 | substream->runtime->dma_area = NULL; | |
568 | } | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
573 | /* | |
574 | * prepare callback | |
575 | */ | |
576 | static int snd_cx25821_prepare(struct snd_pcm_substream *substream) | |
577 | { | |
578 | return 0; | |
579 | } | |
580 | ||
581 | /* | |
582 | * trigger callback | |
583 | */ | |
1a9fc855 MCC |
584 | static int snd_cx25821_card_trigger(struct snd_pcm_substream *substream, |
585 | int cmd) | |
02b20b0b | 586 | { |
8889a8a5 | 587 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
588 | int err = 0; |
589 | ||
590 | /* Local interrupts are already disabled by ALSA */ | |
591 | spin_lock(&chip->reg_lock); | |
592 | ||
1a9fc855 MCC |
593 | switch (cmd) { |
594 | case SNDRV_PCM_TRIGGER_START: | |
595 | err = _cx25821_start_audio_dma(chip); | |
596 | break; | |
597 | case SNDRV_PCM_TRIGGER_STOP: | |
598 | err = _cx25821_stop_audio_dma(chip); | |
599 | break; | |
600 | default: | |
601 | err = -EINVAL; | |
602 | break; | |
02b20b0b MCC |
603 | } |
604 | ||
605 | spin_unlock(&chip->reg_lock); | |
606 | ||
607 | return err; | |
608 | } | |
609 | ||
610 | /* | |
611 | * pointer callback | |
612 | */ | |
1a9fc855 MCC |
613 | static snd_pcm_uframes_t snd_cx25821_pointer(struct snd_pcm_substream |
614 | *substream) | |
02b20b0b | 615 | { |
8889a8a5 | 616 | struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); |
02b20b0b MCC |
617 | struct snd_pcm_runtime *runtime = substream->runtime; |
618 | u16 count; | |
619 | ||
620 | count = atomic_read(&chip->count); | |
621 | ||
1a9fc855 | 622 | return runtime->period_size * (count & (runtime->periods - 1)); |
02b20b0b MCC |
623 | } |
624 | ||
625 | /* | |
626 | * page callback (needed for mmap) | |
627 | */ | |
628 | static struct page *snd_cx25821_page(struct snd_pcm_substream *substream, | |
1a9fc855 | 629 | unsigned long offset) |
02b20b0b MCC |
630 | { |
631 | void *pageptr = substream->runtime->dma_area + offset; | |
632 | ||
633 | return vmalloc_to_page(pageptr); | |
634 | } | |
635 | ||
636 | /* | |
637 | * operators | |
638 | */ | |
5c8d8c01 | 639 | static const struct snd_pcm_ops snd_cx25821_pcm_ops = { |
02b20b0b MCC |
640 | .open = snd_cx25821_pcm_open, |
641 | .close = snd_cx25821_close, | |
02b20b0b MCC |
642 | .hw_params = snd_cx25821_hw_params, |
643 | .hw_free = snd_cx25821_hw_free, | |
644 | .prepare = snd_cx25821_prepare, | |
645 | .trigger = snd_cx25821_card_trigger, | |
646 | .pointer = snd_cx25821_pointer, | |
647 | .page = snd_cx25821_page, | |
648 | }; | |
649 | ||
02b20b0b | 650 | /* |
8889a8a5 OP |
651 | * ALSA create a PCM device: Called when initializing the board. |
652 | * Sets up the name and hooks up the callbacks | |
02b20b0b | 653 | */ |
8889a8a5 OP |
654 | static int snd_cx25821_pcm(struct cx25821_audio_dev *chip, int device, |
655 | char *name) | |
02b20b0b MCC |
656 | { |
657 | struct snd_pcm *pcm; | |
658 | int err; | |
659 | ||
660 | err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); | |
1a9fc855 | 661 | if (err < 0) { |
36d89f7d | 662 | pr_info("ERROR: FAILED snd_pcm_new() in %s\n", __func__); |
02b20b0b MCC |
663 | return err; |
664 | } | |
665 | pcm->private_data = chip; | |
666 | pcm->info_flags = 0; | |
cc1e6315 | 667 | strscpy(pcm->name, name, sizeof(pcm->name)); |
02b20b0b MCC |
668 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx25821_pcm_ops); |
669 | ||
670 | return 0; | |
671 | } | |
672 | ||
02b20b0b MCC |
673 | /**************************************************************************** |
674 | Basic Flow for Sound Devices | |
675 | ****************************************************************************/ | |
676 | ||
677 | /* | |
678 | * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio | |
679 | * Only boards with eeprom and byte 1 at eeprom=1 have it | |
680 | */ | |
681 | ||
114e877a | 682 | static const struct pci_device_id __maybe_unused cx25821_audio_pci_tbl[] = { |
1a9fc855 MCC |
683 | {0x14f1, 0x0920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
684 | {0,} | |
02b20b0b | 685 | }; |
1a9fc855 | 686 | |
02b20b0b MCC |
687 | MODULE_DEVICE_TABLE(pci, cx25821_audio_pci_tbl); |
688 | ||
02b20b0b MCC |
689 | /* |
690 | * Alsa Constructor - Component probe | |
691 | */ | |
692 | static int cx25821_audio_initdev(struct cx25821_dev *dev) | |
693 | { | |
1a9fc855 | 694 | struct snd_card *card; |
8889a8a5 | 695 | struct cx25821_audio_dev *chip; |
1a9fc855 | 696 | int err; |
02b20b0b | 697 | |
1a9fc855 | 698 | if (devno >= SNDRV_CARDS) { |
36d89f7d | 699 | pr_info("DEBUG ERROR: devno >= SNDRV_CARDS %s\n", __func__); |
8889a8a5 | 700 | return -ENODEV; |
02b20b0b MCC |
701 | } |
702 | ||
703 | if (!enable[devno]) { | |
704 | ++devno; | |
36d89f7d | 705 | pr_info("DEBUG ERROR: !enable[devno] %s\n", __func__); |
8889a8a5 | 706 | return -ENOENT; |
02b20b0b MCC |
707 | } |
708 | ||
e7356888 TI |
709 | err = snd_card_new(&dev->pci->dev, index[devno], id[devno], |
710 | THIS_MODULE, | |
711 | sizeof(struct cx25821_audio_dev), &card); | |
53e712d0 | 712 | if (err < 0) { |
36d89f7d JP |
713 | pr_info("DEBUG ERROR: cannot create snd_card_new in %s\n", |
714 | __func__); | |
53e712d0 | 715 | return err; |
02b20b0b MCC |
716 | } |
717 | ||
cc1e6315 | 718 | strscpy(card->driver, "cx25821", sizeof(card->driver)); |
02b20b0b MCC |
719 | |
720 | /* Card "creation" */ | |
ba952d84 | 721 | chip = card->private_data; |
02b20b0b MCC |
722 | spin_lock_init(&chip->reg_lock); |
723 | ||
724 | chip->dev = dev; | |
725 | chip->card = card; | |
726 | chip->pci = dev->pci; | |
727 | chip->iobase = pci_resource_start(dev->pci, 0); | |
728 | ||
02b20b0b MCC |
729 | chip->irq = dev->pci->irq; |
730 | ||
731 | err = request_irq(dev->pci->irq, cx25821_irq, | |
18e9351e | 732 | IRQF_SHARED, chip->dev->name, chip); |
02b20b0b MCC |
733 | |
734 | if (err < 0) { | |
e5f10621 LF |
735 | pr_err("ERROR %s: can't get IRQ %d for ALSA\n", chip->dev->name, |
736 | dev->pci->irq); | |
02b20b0b MCC |
737 | goto error; |
738 | } | |
739 | ||
629dcf23 | 740 | err = snd_cx25821_pcm(chip, 0, "cx25821 Digital"); |
741 | if (err < 0) { | |
36d89f7d JP |
742 | pr_info("DEBUG ERROR: cannot create snd_cx25821_pcm %s\n", |
743 | __func__); | |
02b20b0b MCC |
744 | goto error; |
745 | } | |
746 | ||
cc1e6315 | 747 | strscpy(card->shortname, "cx25821", sizeof(card->shortname)); |
1a9fc855 MCC |
748 | sprintf(card->longname, "%s at 0x%lx irq %d", chip->dev->name, |
749 | chip->iobase, chip->irq); | |
cc1e6315 | 750 | strscpy(card->mixername, "CX25821", sizeof(card->mixername)); |
02b20b0b | 751 | |
e5f10621 LF |
752 | pr_info("%s/%i: ALSA support for cx25821 boards\n", card->driver, |
753 | devno); | |
02b20b0b MCC |
754 | |
755 | err = snd_card_register(card); | |
1a9fc855 | 756 | if (err < 0) { |
36d89f7d JP |
757 | pr_info("DEBUG ERROR: cannot register sound card %s\n", |
758 | __func__); | |
02b20b0b MCC |
759 | goto error; |
760 | } | |
761 | ||
a8f35ce3 | 762 | dev->card = card; |
02b20b0b MCC |
763 | devno++; |
764 | return 0; | |
765 | ||
8889a8a5 | 766 | error: |
02b20b0b MCC |
767 | snd_card_free(card); |
768 | return err; | |
769 | } | |
770 | ||
02b20b0b MCC |
771 | /**************************************************************************** |
772 | LINUX MODULE INIT | |
773 | ****************************************************************************/ | |
a8f35ce3 HV |
774 | |
775 | static int cx25821_alsa_exit_callback(struct device *dev, void *data) | |
776 | { | |
777 | struct v4l2_device *v4l2_dev = dev_get_drvdata(dev); | |
778 | struct cx25821_dev *cxdev = get_cx25821(v4l2_dev); | |
779 | ||
780 | snd_card_free(cxdev->card); | |
781 | return 0; | |
782 | } | |
783 | ||
02b20b0b MCC |
784 | static void cx25821_audio_fini(void) |
785 | { | |
a8f35ce3 HV |
786 | struct device_driver *drv = driver_find("cx25821", &pci_bus_type); |
787 | int ret; | |
788 | ||
789 | ret = driver_for_each_device(drv, NULL, NULL, cx25821_alsa_exit_callback); | |
f327cabf MCC |
790 | if (ret) |
791 | pr_err("%s failed to find a cx25821 driver.\n", __func__); | |
a8f35ce3 HV |
792 | } |
793 | ||
794 | static int cx25821_alsa_init_callback(struct device *dev, void *data) | |
795 | { | |
796 | struct v4l2_device *v4l2_dev = dev_get_drvdata(dev); | |
797 | struct cx25821_dev *cxdev = get_cx25821(v4l2_dev); | |
798 | ||
799 | cx25821_audio_initdev(cxdev); | |
800 | return 0; | |
02b20b0b MCC |
801 | } |
802 | ||
803 | /* | |
804 | * Module initializer | |
805 | * | |
806 | * Loops through present saa7134 cards, and assigns an ALSA device | |
807 | * to each one | |
808 | * | |
809 | */ | |
810 | static int cx25821_alsa_init(void) | |
811 | { | |
a8f35ce3 | 812 | struct device_driver *drv = driver_find("cx25821", &pci_bus_type); |
02b20b0b | 813 | |
a8f35ce3 | 814 | return driver_for_each_device(drv, NULL, NULL, cx25821_alsa_init_callback); |
02b20b0b MCC |
815 | |
816 | } | |
817 | ||
818 | late_initcall(cx25821_alsa_init); | |
819 | module_exit(cx25821_audio_fini); |