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source: GPL/trunk/alsa-kernel/pci/bt87x.c@ 464

Last change on this file since 464 was 464, checked in by Paul Smedley, 16 years ago
Update ALSA kernel to 1.0.21 level
File size: 31.7 KB

Line
1	/*
2	* bt87x.c - Brooktree Bt878/Bt879 driver for ALSA
3	*
4	* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
5	*
6	* based on btaudio.c by Gerd Knorr <kraxel@bytesex.org>
7	*
8	*
9	* This driver is free software; you can redistribute it and/or modify
10	* it under the terms of the GNU General Public License as published by
11	* the Free Software Foundation; either version 2 of the License, or
12	* (at your option) any later version.
13	*
14	* This driver is distributed in the hope that it will be useful,
15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17	* GNU General Public License for more details.
18	*
19	* You should have received a copy of the GNU General Public License
20	* along with this program; if not, write to the Free Software
21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22	*/
23
24	#include <linux/init.h>
25	#include <linux/interrupt.h>
26	#include <linux/pci.h>
27	#include <linux/slab.h>
28	#include <linux/moduleparam.h>
29	#include <linux/bitops.h>
30	#include <asm/io.h>
31	#include <sound/core.h>
32	#include <sound/pcm.h>
33	#include <sound/pcm_params.h>
34	#include <sound/control.h>
35	#include <sound/initval.h>
36
37	MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
38	MODULE_DESCRIPTION("Brooktree Bt87x audio driver");
39	MODULE_LICENSE("GPL");
40	MODULE_SUPPORTED_DEVICE("{{Brooktree,Bt878},"
41	"{Brooktree,Bt879}}");
42
43	#ifndef TARGET_OS2
44	static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
45	static char id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; / ID for this card */
46	#else
47	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
48	static char id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; / ID for this card */
49	#endif
50	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
51	static int digital_rate[SNDRV_CARDS]; /* digital input rate */
52	static int load_all; /* allow to load the non-whitelisted cards */
53
54	module_param_array(index, int, NULL, 0444);
55	MODULE_PARM_DESC(index, "Index value for Bt87x soundcard");
56	module_param_array(id, charp, NULL, 0444);
57	MODULE_PARM_DESC(id, "ID string for Bt87x soundcard");
58	module_param_array(enable, bool, NULL, 0444);
59	MODULE_PARM_DESC(enable, "Enable Bt87x soundcard");
60	module_param_array(digital_rate, int, NULL, 0444);
61	MODULE_PARM_DESC(digital_rate, "Digital input rate for Bt87x soundcard");
62	module_param(load_all, bool, 0444);
63	MODULE_PARM_DESC(load_all, "Allow to load the non-whitelisted cards");
64
65
66	/* register offsets */
67	#define REG_INT_STAT 0x100 /* interrupt status */
68	#define REG_INT_MASK 0x104 /* interrupt mask */
69	#define REG_GPIO_DMA_CTL 0x10c /* audio control */
70	#define REG_PACKET_LEN 0x110 /* audio packet lengths */
71	#define REG_RISC_STRT_ADD 0x114 /* RISC program start address */
72	#define REG_RISC_COUNT 0x120 /* RISC program counter */
73
74	/* interrupt bits */
75	#define INT_OFLOW (1 << 3) /* audio A/D overflow */
76	#define INT_RISCI (1 << 11) /* RISC instruction IRQ bit set */
77	#define INT_FBUS (1 << 12) /* FIFO overrun due to bus access latency */
78	#define INT_FTRGT (1 << 13) /* FIFO overrun due to target latency */
79	#define INT_FDSR (1 << 14) /* FIFO data stream resynchronization */
80	#define INT_PPERR (1 << 15) /* PCI parity error */
81	#define INT_RIPERR (1 << 16) /* RISC instruction parity error */
82	#define INT_PABORT (1 << 17) /* PCI master or target abort */
83	#define INT_OCERR (1 << 18) /* invalid opcode */
84	#define INT_SCERR (1 << 19) /* sync counter overflow */
85	#define INT_RISC_EN (1 << 27) /* DMA controller running */
86	#define INT_RISCS_SHIFT 28 /* RISC status bits */
87
88	/* audio control bits */
89	#define CTL_FIFO_ENABLE (1 << 0) /* enable audio data FIFO */
90	#define CTL_RISC_ENABLE (1 << 1) /* enable audio DMA controller */
91	#define CTL_PKTP_4 (0 << 2) /* packet mode FIFO trigger point - 4 DWORDs */
92	#define CTL_PKTP_8 (1 << 2) /* 8 DWORDs */
93	#define CTL_PKTP_16 (2 << 2) /* 16 DWORDs */
94	#define CTL_ACAP_EN (1 << 4) /* enable audio capture */
95	#define CTL_DA_APP (1 << 5) /* GPIO input */
96	#define CTL_DA_IOM_AFE (0 << 6) /* audio A/D input */
97	#define CTL_DA_IOM_DA (1 << 6) /* digital audio input */
98	#define CTL_DA_SDR_SHIFT 8 /* DDF first stage decimation rate */
99	#define CTL_DA_SDR_MASK (0xf<< 8)
100	#define CTL_DA_LMT (1 << 12) /* limit audio data values */
101	#define CTL_DA_ES2 (1 << 13) /* enable DDF stage 2 */
102	#define CTL_DA_SBR (1 << 14) /* samples rounded to 8 bits */
103	#define CTL_DA_DPM (1 << 15) /* data packet mode */
104	#define CTL_DA_LRD_SHIFT 16 /* ALRCK delay */
105	#define CTL_DA_MLB (1 << 21) /* MSB/LSB format */
106	#define CTL_DA_LRI (1 << 22) /* left/right indication */
107	#define CTL_DA_SCE (1 << 23) /* sample clock edge */
108	#define CTL_A_SEL_STV (0 << 24) /* TV tuner audio input */
109	#define CTL_A_SEL_SFM (1 << 24) /* FM audio input */
110	#define CTL_A_SEL_SML (2 << 24) /* mic/line audio input */
111	#define CTL_A_SEL_SMXC (3 << 24) /* MUX bypass */
112	#define CTL_A_SEL_SHIFT 24
113	#define CTL_A_SEL_MASK (3 << 24)
114	#define CTL_A_PWRDN (1 << 26) /* analog audio power-down */
115	#define CTL_A_G2X (1 << 27) /* audio gain boost */
116	#define CTL_A_GAIN_SHIFT 28 /* audio input gain */
117	#define CTL_A_GAIN_MASK (0xf<<28)
118
119	/* RISC instruction opcodes */
120	#define RISC_WRITE (0x1 << 28) /* write FIFO data to memory at address */
121	#define RISC_WRITEC (0x5 << 28) /* write FIFO data to memory at current address */
122	#define RISC_SKIP (0x2 << 28) /* skip FIFO data */
123	#define RISC_JUMP (0x7 << 28) /* jump to address */
124	#define RISC_SYNC (0x8 << 28) /* synchronize with FIFO */
125
126	/* RISC instruction bits */
127	#define RISC_BYTES_ENABLE (0xf << 12) /* byte enable bits */
128	#define RISC_RESYNC ( 1 << 15) /* disable FDSR errors */
129	#define RISC_SET_STATUS_SHIFT 16 /* set status bits */
130	#define RISC_RESET_STATUS_SHIFT 20 /* clear status bits */
131	#define RISC_IRQ ( 1 << 24) /* interrupt */
132	#define RISC_EOL ( 1 << 26) /* end of line */
133	#define RISC_SOL ( 1 << 27) /* start of line */
134
135	/* SYNC status bits values */
136	#define RISC_SYNC_FM1 0x6
137	#define RISC_SYNC_VRO 0xc
138
139	#define ANALOG_CLOCK 1792000
140	#ifdef CONFIG_SND_BT87X_OVERCLOCK
141	#define CLOCK_DIV_MIN 1
142	#else
143	#define CLOCK_DIV_MIN 4
144	#endif
145	#define CLOCK_DIV_MAX 15
146
147	#define ERROR_INTERRUPTS (INT_FBUS \| INT_FTRGT \| INT_PPERR \| \
148	INT_RIPERR \| INT_PABORT \| INT_OCERR)
149	#define MY_INTERRUPTS (INT_RISCI \| ERROR_INTERRUPTS)
150
151	/* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */
152	#define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8)
153
154	/* Cards with configuration information */
155	enum snd_bt87x_boardid {
156	SND_BT87X_BOARD_UNKNOWN,
157	SND_BT87X_BOARD_GENERIC, /* both an & dig interfaces, 32kHz */
158	SND_BT87X_BOARD_ANALOG, /* board with no external A/D */
159	SND_BT87X_BOARD_OSPREY2x0,
160	SND_BT87X_BOARD_OSPREY440,
161	SND_BT87X_BOARD_AVPHONE98,
162	};
163
164	/* Card configuration */
165	struct snd_bt87x_board {
166	int dig_rate; /* Digital input sampling rate */
167	u32 digital_fmt; /* Register settings for digital input */
168	unsigned no_analog:1; /* No analog input */
169	unsigned no_digital:1; /* No digital input */
170	};
171
172	static __devinitdata struct snd_bt87x_board snd_bt87x_boards[] = {
173	[SND_BT87X_BOARD_UNKNOWN] = {
174	.dig_rate = 32000, /* just a guess */
175	},
176	[SND_BT87X_BOARD_GENERIC] = {
177	.dig_rate = 32000,
178	},
179	[SND_BT87X_BOARD_ANALOG] = {
180	.no_digital = 1,
181	},
182	[SND_BT87X_BOARD_OSPREY2x0] = {
183	.dig_rate = 44100,
184	.digital_fmt = CTL_DA_LRI \| (1 << CTL_DA_LRD_SHIFT),
185	},
186	[SND_BT87X_BOARD_OSPREY440] = {
187	.dig_rate = 32000,
188	.digital_fmt = CTL_DA_LRI \| (1 << CTL_DA_LRD_SHIFT),
189	.no_analog = 1,
190	},
191	[SND_BT87X_BOARD_AVPHONE98] = {
192	.dig_rate = 48000,
193	},
194	};
195
196	struct snd_bt87x {
197	struct snd_card *card;
198	struct pci_dev *pci;
199	struct snd_bt87x_board board;
200
201	void __iomem *mmio;
202	int irq;
203
204	spinlock_t reg_lock;
205	unsigned long opened;
206	struct snd_pcm_substream *substream;
207
208	struct snd_dma_buffer dma_risc;
209	unsigned int line_bytes;
210	unsigned int lines;
211
212	u32 reg_control;
213	u32 interrupt_mask;
214
215	int current_line;
216
217	int pci_parity_errors;
218	};
219
220	enum { DEVICE_DIGITAL, DEVICE_ANALOG };
221
222	static inline u32 snd_bt87x_readl(struct snd_bt87x *chip, u32 reg)
223	{
224	return readl(chip->mmio + reg);
225	}
226
227	static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
228	{
229	writel(value, chip->mmio + reg);
230	}
231
232	static int snd_bt87x_create_risc(struct snd_bt87x chip, struct snd_pcm_substream substream,
233	unsigned int periods, unsigned int period_bytes)
234	{
235	unsigned int i, offset;
236	u32 *risc;
237
238	if (chip->dma_risc.area == NULL) {
239	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
240	PAGE_ALIGN(MAX_RISC_SIZE), &chip->dma_risc) < 0)
241	return -ENOMEM;
242	}
243	risc = (u32 *)chip->dma_risc.area;
244	offset = 0;
245	*risc++ = cpu_to_le32(RISC_SYNC \| RISC_SYNC_FM1);
246	*risc++ = cpu_to_le32(0);
247	for (i = 0; i < periods; ++i) {
248	u32 rest;
249
250	rest = period_bytes;
251	do {
252	u32 cmd, len;
253	unsigned int addr;
254
255	len = PAGE_SIZE - (offset % PAGE_SIZE);
256	if (len > rest)
257	len = rest;
258	cmd = RISC_WRITE \| len;
259	if (rest == period_bytes) {
260	u32 block = i * 16 / periods;
261	cmd \|= RISC_SOL;
262	cmd \|= block << RISC_SET_STATUS_SHIFT;
263	cmd \|= (~block & 0xf) << RISC_RESET_STATUS_SHIFT;
264	}
265	if (len == rest)
266	cmd \|= RISC_EOL \| RISC_IRQ;
267	*risc++ = cpu_to_le32(cmd);
268	addr = snd_pcm_sgbuf_get_addr(substream, offset);
269	*risc++ = cpu_to_le32(addr);
270	offset += len;
271	rest -= len;
272	} while (rest > 0);
273	}
274	*risc++ = cpu_to_le32(RISC_SYNC \| RISC_SYNC_VRO);
275	*risc++ = cpu_to_le32(0);
276	*risc++ = cpu_to_le32(RISC_JUMP);
277	*risc++ = cpu_to_le32(chip->dma_risc.addr);
278	chip->line_bytes = period_bytes;
279	chip->lines = periods;
280	return 0;
281	}
282
283	static void snd_bt87x_free_risc(struct snd_bt87x *chip)
284	{
285	if (chip->dma_risc.area) {
286	snd_dma_free_pages(&chip->dma_risc);
287	chip->dma_risc.area = NULL;
288	}
289	}
290
291	static void snd_bt87x_pci_error(struct snd_bt87x *chip, unsigned int status)
292	{
293	u16 pci_status;
294
295	pci_read_config_word(chip->pci, PCI_STATUS, &pci_status);
296	pci_status &= PCI_STATUS_PARITY \| PCI_STATUS_SIG_TARGET_ABORT \|
297	PCI_STATUS_REC_TARGET_ABORT \| PCI_STATUS_REC_MASTER_ABORT \|
298	PCI_STATUS_SIG_SYSTEM_ERROR \| PCI_STATUS_DETECTED_PARITY;
299	pci_write_config_word(chip->pci, PCI_STATUS, pci_status);
300	if (pci_status != PCI_STATUS_DETECTED_PARITY)
301	snd_printk(KERN_ERR "Aieee - PCI error! status %#08x, PCI status %#04x\n",
302	status & ERROR_INTERRUPTS, pci_status);
303	else {
304	snd_printk(KERN_ERR "Aieee - PCI parity error detected!\n");
305	/* error 'handling' similar to aic7xxx_pci.c: */
306	chip->pci_parity_errors++;
307	if (chip->pci_parity_errors > 20) {
308	snd_printk(KERN_ERR "Too many PCI parity errors observed.\n");
309	snd_printk(KERN_ERR "Some device on this bus is generating bad parity.\n");
310	snd_printk(KERN_ERR "This is an error observed by, not generated by, this card.\n");
311	snd_printk(KERN_ERR "PCI parity error checking has been disabled.\n");
312	chip->interrupt_mask &= ~(INT_PPERR \| INT_RIPERR);
313	snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
314	}
315	}
316	}
317
318	static irqreturn_t snd_bt87x_interrupt(int irq, void *dev_id)
319	{
320	struct snd_bt87x *chip = dev_id;
321	unsigned int status, irq_status;
322
323	status = snd_bt87x_readl(chip, REG_INT_STAT);
324	irq_status = status & chip->interrupt_mask;
325	if (!irq_status)
326	return IRQ_NONE;
327	snd_bt87x_writel(chip, REG_INT_STAT, irq_status);
328
329	if (irq_status & ERROR_INTERRUPTS) {
330	if (irq_status & (INT_FBUS \| INT_FTRGT))
331	snd_printk(KERN_WARNING "FIFO overrun, status %#08x\n", status);
332	if (irq_status & INT_OCERR)
333	snd_printk(KERN_ERR "internal RISC error, status %#08x\n", status);
334	if (irq_status & (INT_PPERR \| INT_RIPERR \| INT_PABORT))
335	snd_bt87x_pci_error(chip, irq_status);
336	}
337	if ((irq_status & INT_RISCI) && (chip->reg_control & CTL_ACAP_EN)) {
338	int current_block, irq_block;
339
340	/* assume that exactly one line has been recorded */
341	chip->current_line = (chip->current_line + 1) % chip->lines;
342	/* but check if some interrupts have been skipped */
343	current_block = chip->current_line * 16 / chip->lines;
344	irq_block = status >> INT_RISCS_SHIFT;
345	if (current_block != irq_block)
346	chip->current_line = (irq_block * chip->lines + 15) / 16;
347
348	snd_pcm_period_elapsed(chip->substream);
349	}
350	return IRQ_HANDLED;
351	}
352
353	static struct snd_pcm_hardware snd_bt87x_digital_hw = {
354	.info = SNDRV_PCM_INFO_MMAP \|
355	SNDRV_PCM_INFO_INTERLEAVED \|
356	SNDRV_PCM_INFO_BLOCK_TRANSFER \|
357	SNDRV_PCM_INFO_MMAP_VALID \|
358	SNDRV_PCM_INFO_BATCH,
359	.formats = SNDRV_PCM_FMTBIT_S16_LE,
360	.rates = 0, /* set at runtime */
361	.channels_min = 2,
362	.channels_max = 2,
363	.buffer_bytes_max = 255 * 4092,
364	.period_bytes_min = 32,
365	.period_bytes_max = 4092,
366	.periods_min = 2,
367	.periods_max = 255,
368	};
369
370	static struct snd_pcm_hardware snd_bt87x_analog_hw = {
371	.info = SNDRV_PCM_INFO_MMAP \|
372	SNDRV_PCM_INFO_INTERLEAVED \|
373	SNDRV_PCM_INFO_BLOCK_TRANSFER \|
374	SNDRV_PCM_INFO_MMAP_VALID \|
375	SNDRV_PCM_INFO_BATCH,
376	.formats = SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S8,
377	.rates = SNDRV_PCM_RATE_KNOT,
378	.rate_min = ANALOG_CLOCK / CLOCK_DIV_MAX,
379	.rate_max = ANALOG_CLOCK / CLOCK_DIV_MIN,
380	.channels_min = 1,
381	.channels_max = 1,
382	.buffer_bytes_max = 255 * 4092,
383	.period_bytes_min = 32,
384	.period_bytes_max = 4092,
385	.periods_min = 2,
386	.periods_max = 255,
387	};
388
389	static int snd_bt87x_set_digital_hw(struct snd_bt87x chip, struct snd_pcm_runtime runtime)
390	{
391	chip->reg_control \|= CTL_DA_IOM_DA \| CTL_A_PWRDN;
392	runtime->hw = snd_bt87x_digital_hw;
393	runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate);
394	runtime->hw.rate_min = chip->board.dig_rate;
395	runtime->hw.rate_max = chip->board.dig_rate;
396	return 0;
397	}
398
399	static int snd_bt87x_set_analog_hw(struct snd_bt87x chip, struct snd_pcm_runtime runtime)
400	{
401	static struct snd_ratnum analog_clock = {
402	.num = ANALOG_CLOCK,
403	.den_min = CLOCK_DIV_MIN,
404	.den_max = CLOCK_DIV_MAX,
405	.den_step = 1
406	};
407	static struct snd_pcm_hw_constraint_ratnums constraint_rates = {
408	.nrats = 1,
409	.rats = &analog_clock
410	};
411
412	chip->reg_control &= ~(CTL_DA_IOM_DA \| CTL_A_PWRDN);
413	runtime->hw = snd_bt87x_analog_hw;
414	return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
415	&constraint_rates);
416	}
417
418	static int snd_bt87x_pcm_open(struct snd_pcm_substream *substream)
419	{
420	struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
421	struct snd_pcm_runtime *runtime = substream->runtime;
422	int err;
423
424	if (test_and_set_bit(0, &chip->opened))
425	return -EBUSY;
426
427	if (substream->pcm->device == DEVICE_DIGITAL)
428	err = snd_bt87x_set_digital_hw(chip, runtime);
429	else
430	err = snd_bt87x_set_analog_hw(chip, runtime);
431	if (err < 0)
432	goto _error;
433
434	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
435	if (err < 0)
436	goto _error;
437
438	chip->substream = substream;
439	return 0;
440
441	_error:
442	clear_bit(0, &chip->opened);
443	smp_mb__after_clear_bit();
444	return err;
445	}
446
447	static int snd_bt87x_close(struct snd_pcm_substream *substream)
448	{
449	struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
450
451	spin_lock_irq(&chip->reg_lock);
452	chip->reg_control \|= CTL_A_PWRDN;
453	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
454	spin_unlock_irq(&chip->reg_lock);
455
456	chip->substream = NULL;
457	clear_bit(0, &chip->opened);
458	smp_mb__after_clear_bit();
459	return 0;
460	}
461
462	static int snd_bt87x_hw_params(struct snd_pcm_substream *substream,
463	struct snd_pcm_hw_params *hw_params)
464	{
465	struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
466	int err;
467
468	err = snd_pcm_lib_malloc_pages(substream,
469	params_buffer_bytes(hw_params));
470	if (err < 0)
471	return err;
472	return snd_bt87x_create_risc(chip, substream,
473	params_periods(hw_params),
474	params_period_bytes(hw_params));
475	}
476
477	static int snd_bt87x_hw_free(struct snd_pcm_substream *substream)
478	{
479	struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
480
481	snd_bt87x_free_risc(chip);
482	snd_pcm_lib_free_pages(substream);
483	return 0;
484	}
485
486	static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
487	{
488	struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
489	struct snd_pcm_runtime *runtime = substream->runtime;
490	int decimation;
491
492	spin_lock_irq(&chip->reg_lock);
493	chip->reg_control &= ~(CTL_DA_SDR_MASK \| CTL_DA_SBR);
494	decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
495	chip->reg_control \|= decimation << CTL_DA_SDR_SHIFT;
496	if (runtime->format == SNDRV_PCM_FORMAT_S8)
497	chip->reg_control \|= CTL_DA_SBR;
498	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
499	spin_unlock_irq(&chip->reg_lock);
500	return 0;
501	}
502
503	static int snd_bt87x_start(struct snd_bt87x *chip)
504	{
505	spin_lock(&chip->reg_lock);
506	chip->current_line = 0;
507	chip->reg_control \|= CTL_FIFO_ENABLE \| CTL_RISC_ENABLE \| CTL_ACAP_EN;
508	snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
509	snd_bt87x_writel(chip, REG_PACKET_LEN,
510	chip->line_bytes \| (chip->lines << 16));
511	snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
512	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
513	spin_unlock(&chip->reg_lock);
514	return 0;
515	}
516
517	static int snd_bt87x_stop(struct snd_bt87x *chip)
518	{
519	spin_lock(&chip->reg_lock);
520	chip->reg_control &= ~(CTL_FIFO_ENABLE \| CTL_RISC_ENABLE \| CTL_ACAP_EN);
521	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
522	snd_bt87x_writel(chip, REG_INT_MASK, 0);
523	snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
524	spin_unlock(&chip->reg_lock);
525	return 0;
526	}
527
528	static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
529	{
530	struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
531
532	switch (cmd) {
533	case SNDRV_PCM_TRIGGER_START:
534	return snd_bt87x_start(chip);
535	case SNDRV_PCM_TRIGGER_STOP:
536	return snd_bt87x_stop(chip);
537	default:
538	return -EINVAL;
539	}
540	}
541
542	static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
543	{
544	struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
545	struct snd_pcm_runtime *runtime = substream->runtime;
546
547	return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
548	}
549
550	static struct snd_pcm_ops snd_bt87x_pcm_ops = {
551	.open = snd_bt87x_pcm_open,
552	.close = snd_bt87x_close,
553	.ioctl = snd_pcm_lib_ioctl,
554	.hw_params = snd_bt87x_hw_params,
555	.hw_free = snd_bt87x_hw_free,
556	.prepare = snd_bt87x_prepare,
557	.trigger = snd_bt87x_trigger,
558	.pointer = snd_bt87x_pointer,
559	.page = snd_pcm_sgbuf_ops_page,
560	};
561
562	static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
563	struct snd_ctl_elem_info *info)
564	{
565	info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
566	info->count = 1;
567	info->value.integer.min = 0;
568	info->value.integer.max = 15;
569	return 0;
570	}
571
572	static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
573	struct snd_ctl_elem_value *value)
574	{
575	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
576
577	value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
578	return 0;
579	}
580
581	static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
582	struct snd_ctl_elem_value *value)
583	{
584	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
585	u32 old_control;
586	int changed;
587
588	spin_lock_irq(&chip->reg_lock);
589	old_control = chip->reg_control;
590	chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
591	\| (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
592	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
593	changed = old_control != chip->reg_control;
594	spin_unlock_irq(&chip->reg_lock);
595	return changed;
596	}
597
598	static struct snd_kcontrol_new snd_bt87x_capture_volume = {
599	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
600	.name = "Capture Volume",
601	.info = snd_bt87x_capture_volume_info,
602	.get = snd_bt87x_capture_volume_get,
603	.put = snd_bt87x_capture_volume_put,
604	};
605
606	#define snd_bt87x_capture_boost_info snd_ctl_boolean_mono_info
607
608	static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
609	struct snd_ctl_elem_value *value)
610	{
611	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
612
613	value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
614	return 0;
615	}
616
617	static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
618	struct snd_ctl_elem_value *value)
619	{
620	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
621	u32 old_control;
622	int changed;
623
624	spin_lock_irq(&chip->reg_lock);
625	old_control = chip->reg_control;
626	chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
627	\| (value->value.integer.value[0] ? CTL_A_G2X : 0);
628	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
629	changed = chip->reg_control != old_control;
630	spin_unlock_irq(&chip->reg_lock);
631	return changed;
632	}
633
634	static struct snd_kcontrol_new snd_bt87x_capture_boost = {
635	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
636	.name = "Capture Boost",
637	.info = snd_bt87x_capture_boost_info,
638	.get = snd_bt87x_capture_boost_get,
639	.put = snd_bt87x_capture_boost_put,
640	};
641
642	static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
643	struct snd_ctl_elem_info *info)
644	{
645	static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};
646
647	info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
648	info->count = 1;
649	info->value.enumerated.items = 3;
650	if (info->value.enumerated.item > 2)
651	info->value.enumerated.item = 2;
652	strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
653	return 0;
654	}
655
656	static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
657	struct snd_ctl_elem_value *value)
658	{
659	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
660
661	value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
662	return 0;
663	}
664
665	static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
666	struct snd_ctl_elem_value *value)
667	{
668	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
669	u32 old_control;
670	int changed;
671
672	spin_lock_irq(&chip->reg_lock);
673	old_control = chip->reg_control;
674	chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
675	\| (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
676	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
677	changed = chip->reg_control != old_control;
678	spin_unlock_irq(&chip->reg_lock);
679	return changed;
680	}
681
682	static struct snd_kcontrol_new snd_bt87x_capture_source = {
683	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
684	.name = "Capture Source",
685	.info = snd_bt87x_capture_source_info,
686	.get = snd_bt87x_capture_source_get,
687	.put = snd_bt87x_capture_source_put,
688	};
689
690	static int snd_bt87x_free(struct snd_bt87x *chip)
691	{
692	if (chip->mmio)
693	snd_bt87x_stop(chip);
694	if (chip->irq >= 0)
695	free_irq(chip->irq, chip);
696	if (chip->mmio)
697	iounmap(chip->mmio);
698	pci_release_regions(chip->pci);
699	pci_disable_device(chip->pci);
700	kfree(chip);
701	return 0;
702	}
703
704	static int snd_bt87x_dev_free(struct snd_device *device)
705	{
706	struct snd_bt87x *chip = device->device_data;
707	return snd_bt87x_free(chip);
708	}
709
710	static int __devinit snd_bt87x_pcm(struct snd_bt87x chip, int device, char name)
711	{
712	int err;
713	struct snd_pcm *pcm;
714
715	err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
716	if (err < 0)
717	return err;
718	pcm->private_data = chip;
719	strcpy(pcm->name, name);
720	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
721	return snd_pcm_lib_preallocate_pages_for_all(pcm,
722	SNDRV_DMA_TYPE_DEV_SG,
723	snd_dma_pci_data(chip->pci),
724	128 * 1024,
725	ALIGN(255 * 4092, 1024));
726	}
727
728	static int __devinit snd_bt87x_create(struct snd_card *card,
729	struct pci_dev *pci,
730	struct snd_bt87x **rchip)
731	{
732	struct snd_bt87x *chip;
733	int err;
734	static struct snd_device_ops ops = {
735	.dev_free = snd_bt87x_dev_free
736	};
737
738	*rchip = NULL;
739
740	err = pci_enable_device(pci);
741	if (err < 0)
742	return err;
743
744	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
745	if (!chip) {
746	pci_disable_device(pci);
747	return -ENOMEM;
748	}
749	chip->card = card;
750	chip->pci = pci;
751	chip->irq = -1;
752	spin_lock_init(&chip->reg_lock);
753
754	if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
755	kfree(chip);
756	pci_disable_device(pci);
757	return err;
758	}
759	chip->mmio = pci_ioremap_bar(pci, 0);
760	if (!chip->mmio) {
761	snd_printk(KERN_ERR "cannot remap io memory\n");
762	err = -ENOMEM;
763	goto fail;
764	}
765
766	chip->reg_control = CTL_A_PWRDN \| CTL_DA_ES2 \|
767	CTL_PKTP_16 \| (15 << CTL_DA_SDR_SHIFT);
768	chip->interrupt_mask = MY_INTERRUPTS;
769	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
770	snd_bt87x_writel(chip, REG_INT_MASK, 0);
771	snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
772
773	err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED,
774	"Bt87x audio", chip);
775	if (err < 0) {
776	snd_printk(KERN_ERR "cannot grab irq %d\n", pci->irq);
777	goto fail;
778	}
779	chip->irq = pci->irq;
780	pci_set_master(pci);
781	synchronize_irq(chip->irq);
782
783	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
784	if (err < 0)
785	goto fail;
786
787	snd_card_set_dev(card, &pci->dev);
788	*rchip = chip;
789	return 0;
790
791	fail:
792	snd_bt87x_free(chip);
793	return err;
794	}
795
796	#define BT_DEVICE(chip, subvend, subdev, id) \
797	{ .vendor = PCI_VENDOR_ID_BROOKTREE, \
798	.device = chip, \
799	.subvendor = subvend, .subdevice = subdev, \
800	.driver_data = SND_BT87X_BOARD_ ## id }
801	/* driver_data is the card id for that device */
802
803	static struct pci_device_id snd_bt87x_ids[] = {
804	/* Hauppauge WinTV series */
805	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, GENERIC),
806	/* Hauppauge WinTV series */
807	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, GENERIC),
808	/* Viewcast Osprey 200 */
809	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, OSPREY2x0),
810	/* Viewcast Osprey 440 (rate is configurable via gpio) */
811	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, OSPREY440),
812	/* ATI TV-Wonder */
813	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, GENERIC),
814	/* Leadtek Winfast tv 2000xp delux */
815	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, GENERIC),
816	/* Voodoo TV 200 */
817	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, GENERIC),
818	/* Askey Computer Corp. MagicTView'99 */
819	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x144f, 0x3000, GENERIC),
820	/* AVerMedia Studio No. 103, 203, ...? */
821	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, AVPHONE98),
822	/* Prolink PixelView PV-M4900 */
823	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, GENERIC),
824	/* Pinnacle Studio PCTV rave */
825	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, GENERIC),
826	{0}
827	};
828	MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);
829
830	/* cards known not to have audio
831	* (DVB cards use the audio function to transfer MPEG data) */
832	static struct {
833	unsigned short subvendor, subdevice;
834	} blacklist[] __devinitdata = {
835	{0x0071, 0x0101}, /* Nebula Electronics DigiTV */
836	{0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
837	{0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
838	{0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
839	{0x1461, 0x0771}, /* AVermedia DVB-T 771 */
840	{0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
841	{0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
842	{0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
843	{0x18ac, 0xdb11}, /* Ultraview DVB-T Lite */
844	{0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
845	{0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
846	};
847
848	static struct pci_driver driver;
849
850	/* return the id of the card, or a negative value if it's blacklisted */
851	static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
852	{
853	int i;
854	const struct pci_device_id *supported;
855	#ifdef TARGET_OS2
856	u16 subsystem_vendor, subsystem_device;
857	#endif
858
859	#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 13)
860	supported = pci_match_id(snd_bt87x_ids, pci);
861	#else
862	supported = pci_match_device(snd_bt87x_ids, pci);
863	#endif
864	if (supported && supported->driver_data > 0)
865	return supported->driver_data;
866
867	#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 3, 0)
868	subsystem_vendor = pci->subsystem_vendor;
869	subsystem_device = pci->subsystem_device;
870	#else
871	pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
872	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
873	#endif
874	for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
875	#ifndef TARGET_OS2
876	if (blacklist[i].subvendor == pci->subsystem_vendor &&
877	blacklist[i].subdevice == pci->subsystem_device) {
878	#else
879	if (blacklist[i].subvendor == subsystem_vendor &&
880	blacklist[i].subdevice == subsystem_device) {
881	#endif
882	snd_printdd(KERN_INFO "card %#04x-%#04x:%#04x has no audio\n",
883	#ifndef TARGET_OS2
884	pci->device, pci->subsystem_vendor, pci->subsystem_device);
885	#else
886	pci->device, subsystem_vendor, subsystem_device);
887	#endif
888	return -EBUSY;
889	}
890
891	snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x\n",
892	#ifndef TARGET_OS2
893	pci->device, pci->subsystem_vendor, pci->subsystem_device);
894	#else
895	pci->device, subsystem_vendor, subsystem_device);
896	#endif
897	snd_printk(KERN_DEBUG "please mail id, board name, and, "
898	"if it works, the correct digital_rate option to "
899	"<alsa-devel@alsa-project.org>\n");
900	return SND_BT87X_BOARD_UNKNOWN;
901	}
902
903	static int __devinit snd_bt87x_probe(struct pci_dev *pci,
904	const struct pci_device_id *pci_id)
905	{
906	static int dev;
907	struct snd_card *card;
908	struct snd_bt87x *chip;
909	int err;
910	enum snd_bt87x_boardid boardid;
911
912	if (!pci_id->driver_data) {
913	err = snd_bt87x_detect_card(pci);
914	if (err < 0)
915	return -ENODEV;
916	boardid = err;
917	} else
918	boardid = pci_id->driver_data;
919
920	if (dev >= SNDRV_CARDS)
921	return -ENODEV;
922	if (!enable[dev]) {
923	++dev;
924	return -ENOENT;
925	}
926
927	err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
928	if (err < 0)
929	return err;
930
931	err = snd_bt87x_create(card, pci, &chip);
932	if (err < 0)
933	goto _error;
934
935	memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board));
936
937	if (!chip->board.no_digital) {
938	if (digital_rate[dev] > 0)
939	chip->board.dig_rate = digital_rate[dev];
940
941	chip->reg_control \|= chip->board.digital_fmt;
942
943	err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
944	if (err < 0)
945	goto _error;
946	}
947	if (!chip->board.no_analog) {
948	err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
949	if (err < 0)
950	goto _error;
951	err = snd_ctl_add(card, snd_ctl_new1(
952	&snd_bt87x_capture_volume, chip));
953	if (err < 0)
954	goto _error;
955	err = snd_ctl_add(card, snd_ctl_new1(
956	&snd_bt87x_capture_boost, chip));
957	if (err < 0)
958	goto _error;
959	err = snd_ctl_add(card, snd_ctl_new1(
960	&snd_bt87x_capture_source, chip));
961	if (err < 0)
962	goto _error;
963	}
964	snd_printk(KERN_INFO "bt87x%d: Using board %d, %sanalog, %sdigital "
965	"(rate %d Hz)\n", dev, boardid,
966	chip->board.no_analog ? "no " : "",
967	chip->board.no_digital ? "no " : "", chip->board.dig_rate);
968
969	strcpy(card->driver, "Bt87x");
970	sprintf(card->shortname, "Brooktree Bt%x", pci->device);
971	sprintf(card->longname, "%s at %#llx, irq %i",
972	card->shortname, (unsigned long long)pci_resource_start(pci, 0),
973	chip->irq);
974	strcpy(card->mixername, "Bt87x");
975
976	err = snd_card_register(card);
977	if (err < 0)
978	goto _error;
979
980	pci_set_drvdata(pci, card);
981	++dev;
982	return 0;
983
984	_error:
985	snd_card_free(card);
986	return err;
987	}
988
989	static void __devexit snd_bt87x_remove(struct pci_dev *pci)
990	{
991	snd_card_free(pci_get_drvdata(pci));
992	pci_set_drvdata(pci, NULL);
993	}
994
995	/* default entries for all Bt87x cards - it's not exported */
996	/* driver_data is set to 0 to call detection */
997	static struct pci_device_id snd_bt87x_default_ids[] __devinitdata = {
998	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
999	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, UNKNOWN),
1000	{0}
1001	};
1002
1003	static struct pci_driver driver = {
1004	.name = "Bt87x",
1005	.id_table = snd_bt87x_ids,
1006	.probe = snd_bt87x_probe,
1007	.remove = __devexit_p(snd_bt87x_remove),
1008	};
1009
1010	static int __init alsa_card_bt87x_init(void)
1011	{
1012	if (load_all)
1013	driver.id_table = snd_bt87x_default_ids;
1014	return pci_register_driver(&driver);
1015	}
1016
1017	static void __exit alsa_card_bt87x_exit(void)
1018	{
1019	pci_unregister_driver(&driver);
1020	}
1021
1022	module_init(alsa_card_bt87x_init)
1023	module_exit(alsa_card_bt87x_exit)

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