1c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
2b285192aSMauro Carvalho Chehab /*
3b285192aSMauro Carvalho Chehab * Support for audio capture
4b285192aSMauro Carvalho Chehab * PCI function #1 of the cx2388x.
5b285192aSMauro Carvalho Chehab *
6b285192aSMauro Carvalho Chehab * (c) 2007 Trent Piepho <xyzzy@speakeasy.org>
7b285192aSMauro Carvalho Chehab * (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
832590819SMauro Carvalho Chehab * (c) 2005 Mauro Carvalho Chehab <mchehab@kernel.org>
9b285192aSMauro Carvalho Chehab * Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
10b285192aSMauro Carvalho Chehab * Based on dummy.c by Jaroslav Kysela <perex@perex.cz>
11b285192aSMauro Carvalho Chehab */
12b285192aSMauro Carvalho Chehab
1365bc2fe8SMauro Carvalho Chehab #include "cx88.h"
1465bc2fe8SMauro Carvalho Chehab #include "cx88-reg.h"
1565bc2fe8SMauro Carvalho Chehab
16b285192aSMauro Carvalho Chehab #include <linux/module.h>
17b285192aSMauro Carvalho Chehab #include <linux/init.h>
18399426caSMauro Carvalho Chehab #include <linux/delay.h>
19b285192aSMauro Carvalho Chehab #include <linux/device.h>
20b285192aSMauro Carvalho Chehab #include <linux/interrupt.h>
21b285192aSMauro Carvalho Chehab #include <linux/vmalloc.h>
22b285192aSMauro Carvalho Chehab #include <linux/dma-mapping.h>
23b285192aSMauro Carvalho Chehab #include <linux/pci.h>
24b285192aSMauro Carvalho Chehab #include <linux/slab.h>
25b285192aSMauro Carvalho Chehab
26b285192aSMauro Carvalho Chehab #include <sound/core.h>
27b285192aSMauro Carvalho Chehab #include <sound/pcm.h>
28b285192aSMauro Carvalho Chehab #include <sound/pcm_params.h>
29b285192aSMauro Carvalho Chehab #include <sound/control.h>
30b285192aSMauro Carvalho Chehab #include <sound/initval.h>
31b285192aSMauro Carvalho Chehab #include <sound/tlv.h>
32b5dcee22SMauro Carvalho Chehab #include <media/i2c/wm8775.h>
33b285192aSMauro Carvalho Chehab
34db613710SMauro Carvalho Chehab #define dprintk(level, fmt, arg...) do { \
35db613710SMauro Carvalho Chehab if (debug + 1 > level) \
3665bc2fe8SMauro Carvalho Chehab printk(KERN_DEBUG pr_fmt("%s: alsa: " fmt), \
3765bc2fe8SMauro Carvalho Chehab chip->core->name, ##arg); \
38db613710SMauro Carvalho Chehab } while (0)
39b285192aSMauro Carvalho Chehab
40399426caSMauro Carvalho Chehab /*
41399426caSMauro Carvalho Chehab * Data type declarations - Can be moded to a header file later
42399426caSMauro Carvalho Chehab */
43b285192aSMauro Carvalho Chehab
44b285192aSMauro Carvalho Chehab struct cx88_audio_buffer {
45b285192aSMauro Carvalho Chehab unsigned int bpl;
465e7045e3SHans Verkuil struct cx88_riscmem risc;
47b2c75abdSHans Verkuil void *vaddr;
48b2c75abdSHans Verkuil struct scatterlist *sglist;
49b2c75abdSHans Verkuil int sglen;
50b4e0a5f9SMauro Carvalho Chehab unsigned long nr_pages;
51b285192aSMauro Carvalho Chehab };
52b285192aSMauro Carvalho Chehab
53b285192aSMauro Carvalho Chehab struct cx88_audio_dev {
54b285192aSMauro Carvalho Chehab struct cx88_core *core;
55b285192aSMauro Carvalho Chehab struct cx88_dmaqueue q;
56b285192aSMauro Carvalho Chehab
57b285192aSMauro Carvalho Chehab /* pci i/o */
58b285192aSMauro Carvalho Chehab struct pci_dev *pci;
59b285192aSMauro Carvalho Chehab
60b285192aSMauro Carvalho Chehab /* audio controls */
61b285192aSMauro Carvalho Chehab int irq;
62b285192aSMauro Carvalho Chehab
63b285192aSMauro Carvalho Chehab struct snd_card *card;
64b285192aSMauro Carvalho Chehab
65b285192aSMauro Carvalho Chehab spinlock_t reg_lock;
66b285192aSMauro Carvalho Chehab atomic_t count;
67b285192aSMauro Carvalho Chehab
68b285192aSMauro Carvalho Chehab unsigned int dma_size;
69b285192aSMauro Carvalho Chehab unsigned int period_size;
70b285192aSMauro Carvalho Chehab unsigned int num_periods;
71b285192aSMauro Carvalho Chehab
72b285192aSMauro Carvalho Chehab struct cx88_audio_buffer *buf;
73b285192aSMauro Carvalho Chehab
74b285192aSMauro Carvalho Chehab struct snd_pcm_substream *substream;
75b285192aSMauro Carvalho Chehab };
76b285192aSMauro Carvalho Chehab
77399426caSMauro Carvalho Chehab /*
78399426caSMauro Carvalho Chehab * Module global static vars
79399426caSMauro Carvalho Chehab */
80b285192aSMauro Carvalho Chehab
81b285192aSMauro Carvalho Chehab static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
82b285192aSMauro Carvalho Chehab static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
83d275d935SLuis de Bethencourt static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
84b285192aSMauro Carvalho Chehab
85b285192aSMauro Carvalho Chehab module_param_array(enable, bool, NULL, 0444);
86b285192aSMauro Carvalho Chehab MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
87b285192aSMauro Carvalho Chehab
88b285192aSMauro Carvalho Chehab module_param_array(index, int, NULL, 0444);
89b285192aSMauro Carvalho Chehab MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
90b285192aSMauro Carvalho Chehab
91399426caSMauro Carvalho Chehab /*
92399426caSMauro Carvalho Chehab * Module macros
93399426caSMauro Carvalho Chehab */
94b285192aSMauro Carvalho Chehab
95b285192aSMauro Carvalho Chehab MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
96b285192aSMauro Carvalho Chehab MODULE_AUTHOR("Ricardo Cerqueira");
9732590819SMauro Carvalho Chehab MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
98513dbd35SMauro Carvalho Chehab MODULE_LICENSE("GPL v2");
99b285192aSMauro Carvalho Chehab MODULE_VERSION(CX88_VERSION);
100b285192aSMauro Carvalho Chehab
101b285192aSMauro Carvalho Chehab static unsigned int debug;
102b285192aSMauro Carvalho Chehab module_param(debug, int, 0644);
103b285192aSMauro Carvalho Chehab MODULE_PARM_DESC(debug, "enable debug messages");
104b285192aSMauro Carvalho Chehab
105399426caSMauro Carvalho Chehab /*
106399426caSMauro Carvalho Chehab * Module specific functions
107399426caSMauro Carvalho Chehab */
108b285192aSMauro Carvalho Chehab
109b285192aSMauro Carvalho Chehab /*
110b285192aSMauro Carvalho Chehab * BOARD Specific: Sets audio DMA
111b285192aSMauro Carvalho Chehab */
112b285192aSMauro Carvalho Chehab
_cx88_start_audio_dma(struct cx88_audio_dev * chip)113399426caSMauro Carvalho Chehab static int _cx88_start_audio_dma(struct cx88_audio_dev *chip)
114b285192aSMauro Carvalho Chehab {
115b285192aSMauro Carvalho Chehab struct cx88_audio_buffer *buf = chip->buf;
116b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
117b285192aSMauro Carvalho Chehab const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
118b285192aSMauro Carvalho Chehab
119b285192aSMauro Carvalho Chehab /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
120b285192aSMauro Carvalho Chehab cx_clear(MO_AUD_DMACNTRL, 0x11);
121b285192aSMauro Carvalho Chehab
122b285192aSMauro Carvalho Chehab /* setup fifo + format - out channel */
123b285192aSMauro Carvalho Chehab cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
124b285192aSMauro Carvalho Chehab
125b285192aSMauro Carvalho Chehab /* sets bpl size */
126b285192aSMauro Carvalho Chehab cx_write(MO_AUDD_LNGTH, buf->bpl);
127b285192aSMauro Carvalho Chehab
128b285192aSMauro Carvalho Chehab /* reset counter */
129b285192aSMauro Carvalho Chehab cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
130b285192aSMauro Carvalho Chehab atomic_set(&chip->count, 0);
131b285192aSMauro Carvalho Chehab
132399426caSMauro Carvalho Chehab dprintk(1,
133399426caSMauro Carvalho Chehab "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d byte buffer\n",
134e318e584SMauro Carvalho Chehab buf->bpl, cx_read(audio_ch->cmds_start + 8) >> 1,
135b285192aSMauro Carvalho Chehab chip->num_periods, buf->bpl * chip->num_periods);
136b285192aSMauro Carvalho Chehab
137b285192aSMauro Carvalho Chehab /* Enables corresponding bits at AUD_INT_STAT */
138b285192aSMauro Carvalho Chehab cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
139b285192aSMauro Carvalho Chehab AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
140b285192aSMauro Carvalho Chehab
141b285192aSMauro Carvalho Chehab /* Clean any pending interrupt bits already set */
142b285192aSMauro Carvalho Chehab cx_write(MO_AUD_INTSTAT, ~0);
143b285192aSMauro Carvalho Chehab
144b285192aSMauro Carvalho Chehab /* enable audio irqs */
145b285192aSMauro Carvalho Chehab cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
146b285192aSMauro Carvalho Chehab
147b285192aSMauro Carvalho Chehab /* start dma */
148399426caSMauro Carvalho Chehab
149399426caSMauro Carvalho Chehab /* Enables Risc Processor */
150399426caSMauro Carvalho Chehab cx_set(MO_DEV_CNTRL2, (1 << 5));
151399426caSMauro Carvalho Chehab /* audio downstream FIFO and RISC enable */
152399426caSMauro Carvalho Chehab cx_set(MO_AUD_DMACNTRL, 0x11);
153b285192aSMauro Carvalho Chehab
154b285192aSMauro Carvalho Chehab if (debug)
155b285192aSMauro Carvalho Chehab cx88_sram_channel_dump(chip->core, audio_ch);
156b285192aSMauro Carvalho Chehab
157b285192aSMauro Carvalho Chehab return 0;
158b285192aSMauro Carvalho Chehab }
159b285192aSMauro Carvalho Chehab
160b285192aSMauro Carvalho Chehab /*
161b285192aSMauro Carvalho Chehab * BOARD Specific: Resets audio DMA
162b285192aSMauro Carvalho Chehab */
_cx88_stop_audio_dma(struct cx88_audio_dev * chip)163399426caSMauro Carvalho Chehab static int _cx88_stop_audio_dma(struct cx88_audio_dev *chip)
164b285192aSMauro Carvalho Chehab {
165b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
1667b61ba8fSMauro Carvalho Chehab
167b285192aSMauro Carvalho Chehab dprintk(1, "Stopping audio DMA\n");
168b285192aSMauro Carvalho Chehab
169b285192aSMauro Carvalho Chehab /* stop dma */
170b285192aSMauro Carvalho Chehab cx_clear(MO_AUD_DMACNTRL, 0x11);
171b285192aSMauro Carvalho Chehab
172b285192aSMauro Carvalho Chehab /* disable irqs */
173b285192aSMauro Carvalho Chehab cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
174b285192aSMauro Carvalho Chehab cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
175b285192aSMauro Carvalho Chehab AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
176b285192aSMauro Carvalho Chehab
177b285192aSMauro Carvalho Chehab if (debug)
178399426caSMauro Carvalho Chehab cx88_sram_channel_dump(chip->core,
179399426caSMauro Carvalho Chehab &cx88_sram_channels[SRAM_CH25]);
180b285192aSMauro Carvalho Chehab
181b285192aSMauro Carvalho Chehab return 0;
182b285192aSMauro Carvalho Chehab }
183b285192aSMauro Carvalho Chehab
184b285192aSMauro Carvalho Chehab #define MAX_IRQ_LOOP 50
185b285192aSMauro Carvalho Chehab
186b285192aSMauro Carvalho Chehab /*
187b285192aSMauro Carvalho Chehab * BOARD Specific: IRQ dma bits
188b285192aSMauro Carvalho Chehab */
189b285192aSMauro Carvalho Chehab static const char *cx88_aud_irqs[32] = {
190b285192aSMauro Carvalho Chehab "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
191b285192aSMauro Carvalho Chehab NULL, /* reserved */
192b285192aSMauro Carvalho Chehab "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
193b285192aSMauro Carvalho Chehab NULL, /* reserved */
194b285192aSMauro Carvalho Chehab "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
195b285192aSMauro Carvalho Chehab NULL, /* reserved */
196b285192aSMauro Carvalho Chehab "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
197b285192aSMauro Carvalho Chehab NULL, /* reserved */
198b285192aSMauro Carvalho Chehab "opc_err", "par_err", "rip_err", /* 16-18 */
199b285192aSMauro Carvalho Chehab "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
200b285192aSMauro Carvalho Chehab };
201b285192aSMauro Carvalho Chehab
202b285192aSMauro Carvalho Chehab /*
203b285192aSMauro Carvalho Chehab * BOARD Specific: Threats IRQ audio specific calls
204b285192aSMauro Carvalho Chehab */
cx8801_aud_irq(struct cx88_audio_dev * chip)205399426caSMauro Carvalho Chehab static void cx8801_aud_irq(struct cx88_audio_dev *chip)
206b285192aSMauro Carvalho Chehab {
207b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
208b285192aSMauro Carvalho Chehab u32 status, mask;
209b285192aSMauro Carvalho Chehab
210b285192aSMauro Carvalho Chehab status = cx_read(MO_AUD_INTSTAT);
211b285192aSMauro Carvalho Chehab mask = cx_read(MO_AUD_INTMSK);
212b285192aSMauro Carvalho Chehab if (0 == (status & mask))
213b285192aSMauro Carvalho Chehab return;
214b285192aSMauro Carvalho Chehab cx_write(MO_AUD_INTSTAT, status);
215b285192aSMauro Carvalho Chehab if (debug > 1 || (status & mask & ~0xff))
21665bc2fe8SMauro Carvalho Chehab cx88_print_irqbits("irq aud",
217b285192aSMauro Carvalho Chehab cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
218b285192aSMauro Carvalho Chehab status, mask);
219b285192aSMauro Carvalho Chehab /* risc op code error */
220b285192aSMauro Carvalho Chehab if (status & AUD_INT_OPC_ERR) {
22165bc2fe8SMauro Carvalho Chehab pr_warn("Audio risc op code error\n");
222b285192aSMauro Carvalho Chehab cx_clear(MO_AUD_DMACNTRL, 0x11);
223b285192aSMauro Carvalho Chehab cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
224b285192aSMauro Carvalho Chehab }
225b285192aSMauro Carvalho Chehab if (status & AUD_INT_DN_SYNC) {
226b285192aSMauro Carvalho Chehab dprintk(1, "Downstream sync error\n");
227b285192aSMauro Carvalho Chehab cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
228b285192aSMauro Carvalho Chehab return;
229b285192aSMauro Carvalho Chehab }
230b285192aSMauro Carvalho Chehab /* risc1 downstream */
231b285192aSMauro Carvalho Chehab if (status & AUD_INT_DN_RISCI1) {
232b285192aSMauro Carvalho Chehab atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
233b285192aSMauro Carvalho Chehab snd_pcm_period_elapsed(chip->substream);
234b285192aSMauro Carvalho Chehab }
235b285192aSMauro Carvalho Chehab /* FIXME: Any other status should deserve a special handling? */
236b285192aSMauro Carvalho Chehab }
237b285192aSMauro Carvalho Chehab
238b285192aSMauro Carvalho Chehab /*
239b285192aSMauro Carvalho Chehab * BOARD Specific: Handles IRQ calls
240b285192aSMauro Carvalho Chehab */
cx8801_irq(int irq,void * dev_id)241b285192aSMauro Carvalho Chehab static irqreturn_t cx8801_irq(int irq, void *dev_id)
242b285192aSMauro Carvalho Chehab {
243399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = dev_id;
244b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
245b285192aSMauro Carvalho Chehab u32 status;
246b285192aSMauro Carvalho Chehab int loop, handled = 0;
247b285192aSMauro Carvalho Chehab
248b285192aSMauro Carvalho Chehab for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
249b285192aSMauro Carvalho Chehab status = cx_read(MO_PCI_INTSTAT) &
250b285192aSMauro Carvalho Chehab (core->pci_irqmask | PCI_INT_AUDINT);
2517b61ba8fSMauro Carvalho Chehab if (status == 0)
252b285192aSMauro Carvalho Chehab goto out;
253b285192aSMauro Carvalho Chehab dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
254b285192aSMauro Carvalho Chehab loop, MAX_IRQ_LOOP, status);
255b285192aSMauro Carvalho Chehab handled = 1;
256b285192aSMauro Carvalho Chehab cx_write(MO_PCI_INTSTAT, status);
257b285192aSMauro Carvalho Chehab
258b285192aSMauro Carvalho Chehab if (status & core->pci_irqmask)
259b285192aSMauro Carvalho Chehab cx88_core_irq(core, status);
260b285192aSMauro Carvalho Chehab if (status & PCI_INT_AUDINT)
261b285192aSMauro Carvalho Chehab cx8801_aud_irq(chip);
262b285192aSMauro Carvalho Chehab }
263b285192aSMauro Carvalho Chehab
2647b61ba8fSMauro Carvalho Chehab if (loop == MAX_IRQ_LOOP) {
26565bc2fe8SMauro Carvalho Chehab pr_err("IRQ loop detected, disabling interrupts\n");
266b285192aSMauro Carvalho Chehab cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
267b285192aSMauro Carvalho Chehab }
268b285192aSMauro Carvalho Chehab
269b285192aSMauro Carvalho Chehab out:
270b285192aSMauro Carvalho Chehab return IRQ_RETVAL(handled);
271b285192aSMauro Carvalho Chehab }
272b285192aSMauro Carvalho Chehab
cx88_alsa_dma_init(struct cx88_audio_dev * chip,unsigned long nr_pages)273b4e0a5f9SMauro Carvalho Chehab static int cx88_alsa_dma_init(struct cx88_audio_dev *chip,
274b4e0a5f9SMauro Carvalho Chehab unsigned long nr_pages)
275b2c75abdSHans Verkuil {
276b2c75abdSHans Verkuil struct cx88_audio_buffer *buf = chip->buf;
277b2c75abdSHans Verkuil struct page *pg;
278b2c75abdSHans Verkuil int i;
279b2c75abdSHans Verkuil
280b2c75abdSHans Verkuil buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT);
281399426caSMauro Carvalho Chehab if (!buf->vaddr) {
282b4e0a5f9SMauro Carvalho Chehab dprintk(1, "vmalloc_32(%lu pages) failed\n", nr_pages);
283b2c75abdSHans Verkuil return -ENOMEM;
284b2c75abdSHans Verkuil }
285b2c75abdSHans Verkuil
286b4e0a5f9SMauro Carvalho Chehab dprintk(1, "vmalloc is at addr %p, size=%lu\n",
287aea629c1SMauro Carvalho Chehab buf->vaddr, nr_pages << PAGE_SHIFT);
288b2c75abdSHans Verkuil
289b2c75abdSHans Verkuil memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT);
290b2c75abdSHans Verkuil buf->nr_pages = nr_pages;
291b2c75abdSHans Verkuil
292fad953ceSKees Cook buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages));
293399426caSMauro Carvalho Chehab if (!buf->sglist)
294b2c75abdSHans Verkuil goto vzalloc_err;
295b2c75abdSHans Verkuil
296b2c75abdSHans Verkuil sg_init_table(buf->sglist, buf->nr_pages);
297b2c75abdSHans Verkuil for (i = 0; i < buf->nr_pages; i++) {
298b2c75abdSHans Verkuil pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE);
299399426caSMauro Carvalho Chehab if (!pg)
300b2c75abdSHans Verkuil goto vmalloc_to_page_err;
301b2c75abdSHans Verkuil sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0);
302b2c75abdSHans Verkuil }
303b2c75abdSHans Verkuil return 0;
304b2c75abdSHans Verkuil
305b2c75abdSHans Verkuil vmalloc_to_page_err:
306b2c75abdSHans Verkuil vfree(buf->sglist);
307b2c75abdSHans Verkuil buf->sglist = NULL;
308b2c75abdSHans Verkuil vzalloc_err:
309b2c75abdSHans Verkuil vfree(buf->vaddr);
310b2c75abdSHans Verkuil buf->vaddr = NULL;
311b2c75abdSHans Verkuil return -ENOMEM;
312b2c75abdSHans Verkuil }
313b2c75abdSHans Verkuil
cx88_alsa_dma_map(struct cx88_audio_dev * dev)314b2c75abdSHans Verkuil static int cx88_alsa_dma_map(struct cx88_audio_dev *dev)
315b2c75abdSHans Verkuil {
316b2c75abdSHans Verkuil struct cx88_audio_buffer *buf = dev->buf;
317b2c75abdSHans Verkuil
318b2c75abdSHans Verkuil buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist,
319f95fc014SMarek Szyprowski buf->nr_pages, DMA_FROM_DEVICE);
320b2c75abdSHans Verkuil
3217b61ba8fSMauro Carvalho Chehab if (buf->sglen == 0) {
322b2c75abdSHans Verkuil pr_warn("%s: cx88_alsa_map_sg failed\n", __func__);
323b2c75abdSHans Verkuil return -ENOMEM;
324b2c75abdSHans Verkuil }
325b2c75abdSHans Verkuil return 0;
326b2c75abdSHans Verkuil }
327b2c75abdSHans Verkuil
cx88_alsa_dma_unmap(struct cx88_audio_dev * dev)328b2c75abdSHans Verkuil static int cx88_alsa_dma_unmap(struct cx88_audio_dev *dev)
329b2c75abdSHans Verkuil {
330b2c75abdSHans Verkuil struct cx88_audio_buffer *buf = dev->buf;
331b2c75abdSHans Verkuil
332b2c75abdSHans Verkuil if (!buf->sglen)
333b2c75abdSHans Verkuil return 0;
334b2c75abdSHans Verkuil
335f95fc014SMarek Szyprowski dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->nr_pages,
336f95fc014SMarek Szyprowski DMA_FROM_DEVICE);
337b2c75abdSHans Verkuil buf->sglen = 0;
338b2c75abdSHans Verkuil return 0;
339b2c75abdSHans Verkuil }
340b2c75abdSHans Verkuil
cx88_alsa_dma_free(struct cx88_audio_buffer * buf)341b2c75abdSHans Verkuil static int cx88_alsa_dma_free(struct cx88_audio_buffer *buf)
342b2c75abdSHans Verkuil {
343b2c75abdSHans Verkuil vfree(buf->sglist);
344b2c75abdSHans Verkuil buf->sglist = NULL;
345b2c75abdSHans Verkuil vfree(buf->vaddr);
346b2c75abdSHans Verkuil buf->vaddr = NULL;
347b2c75abdSHans Verkuil return 0;
348b2c75abdSHans Verkuil }
349b2c75abdSHans Verkuil
dsp_buffer_free(struct cx88_audio_dev * chip)350399426caSMauro Carvalho Chehab static int dsp_buffer_free(struct cx88_audio_dev *chip)
351b285192aSMauro Carvalho Chehab {
3525e7045e3SHans Verkuil struct cx88_riscmem *risc = &chip->buf->risc;
3535e7045e3SHans Verkuil
354399426caSMauro Carvalho Chehab WARN_ON(!chip->dma_size);
355b285192aSMauro Carvalho Chehab
356b285192aSMauro Carvalho Chehab dprintk(2, "Freeing buffer\n");
357b2c75abdSHans Verkuil cx88_alsa_dma_unmap(chip);
358b2c75abdSHans Verkuil cx88_alsa_dma_free(chip->buf);
3595e7045e3SHans Verkuil if (risc->cpu)
360*00ae4ebcSChristophe JAILLET dma_free_coherent(&chip->pci->dev, risc->size, risc->cpu,
361*00ae4ebcSChristophe JAILLET risc->dma);
362b285192aSMauro Carvalho Chehab kfree(chip->buf);
363b285192aSMauro Carvalho Chehab
364b2c75abdSHans Verkuil chip->buf = NULL;
365b285192aSMauro Carvalho Chehab
366b285192aSMauro Carvalho Chehab return 0;
367b285192aSMauro Carvalho Chehab }
368b285192aSMauro Carvalho Chehab
369399426caSMauro Carvalho Chehab /*
370399426caSMauro Carvalho Chehab * ALSA PCM Interface
371399426caSMauro Carvalho Chehab */
372b285192aSMauro Carvalho Chehab
373b285192aSMauro Carvalho Chehab /*
374b285192aSMauro Carvalho Chehab * Digital hardware definition
375b285192aSMauro Carvalho Chehab */
376b285192aSMauro Carvalho Chehab #define DEFAULT_FIFO_SIZE 4096
377b285192aSMauro Carvalho Chehab static const struct snd_pcm_hardware snd_cx88_digital_hw = {
378b285192aSMauro Carvalho Chehab .info = SNDRV_PCM_INFO_MMAP |
379b285192aSMauro Carvalho Chehab SNDRV_PCM_INFO_INTERLEAVED |
380b285192aSMauro Carvalho Chehab SNDRV_PCM_INFO_BLOCK_TRANSFER |
381b285192aSMauro Carvalho Chehab SNDRV_PCM_INFO_MMAP_VALID,
382b285192aSMauro Carvalho Chehab .formats = SNDRV_PCM_FMTBIT_S16_LE,
383b285192aSMauro Carvalho Chehab
384b285192aSMauro Carvalho Chehab .rates = SNDRV_PCM_RATE_48000,
385b285192aSMauro Carvalho Chehab .rate_min = 48000,
386b285192aSMauro Carvalho Chehab .rate_max = 48000,
387b285192aSMauro Carvalho Chehab .channels_min = 2,
388b285192aSMauro Carvalho Chehab .channels_max = 2,
389399426caSMauro Carvalho Chehab /*
390399426caSMauro Carvalho Chehab * Analog audio output will be full of clicks and pops if there
391399426caSMauro Carvalho Chehab * are not exactly four lines in the SRAM FIFO buffer.
392399426caSMauro Carvalho Chehab */
393b285192aSMauro Carvalho Chehab .period_bytes_min = DEFAULT_FIFO_SIZE / 4,
394b285192aSMauro Carvalho Chehab .period_bytes_max = DEFAULT_FIFO_SIZE / 4,
395b285192aSMauro Carvalho Chehab .periods_min = 1,
396b285192aSMauro Carvalho Chehab .periods_max = 1024,
397b285192aSMauro Carvalho Chehab .buffer_bytes_max = (1024 * 1024),
398b285192aSMauro Carvalho Chehab };
399b285192aSMauro Carvalho Chehab
400b285192aSMauro Carvalho Chehab /*
401b285192aSMauro Carvalho Chehab * audio pcm capture open callback
402b285192aSMauro Carvalho Chehab */
snd_cx88_pcm_open(struct snd_pcm_substream * substream)403b285192aSMauro Carvalho Chehab static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
404b285192aSMauro Carvalho Chehab {
405399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream);
406b285192aSMauro Carvalho Chehab struct snd_pcm_runtime *runtime = substream->runtime;
407b285192aSMauro Carvalho Chehab int err;
408b285192aSMauro Carvalho Chehab
409b285192aSMauro Carvalho Chehab if (!chip) {
41065bc2fe8SMauro Carvalho Chehab pr_err("BUG: cx88 can't find device struct. Can't proceed with open\n");
411b285192aSMauro Carvalho Chehab return -ENODEV;
412b285192aSMauro Carvalho Chehab }
413b285192aSMauro Carvalho Chehab
414399426caSMauro Carvalho Chehab err = snd_pcm_hw_constraint_pow2(runtime, 0,
415399426caSMauro Carvalho Chehab SNDRV_PCM_HW_PARAM_PERIODS);
416b285192aSMauro Carvalho Chehab if (err < 0)
417b285192aSMauro Carvalho Chehab goto _error;
418b285192aSMauro Carvalho Chehab
419b285192aSMauro Carvalho Chehab chip->substream = substream;
420b285192aSMauro Carvalho Chehab
421b285192aSMauro Carvalho Chehab runtime->hw = snd_cx88_digital_hw;
422b285192aSMauro Carvalho Chehab
423b285192aSMauro Carvalho Chehab if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
424b285192aSMauro Carvalho Chehab unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
4257b61ba8fSMauro Carvalho Chehab
426b285192aSMauro Carvalho Chehab bpl &= ~7; /* must be multiple of 8 */
427b285192aSMauro Carvalho Chehab runtime->hw.period_bytes_min = bpl;
428b285192aSMauro Carvalho Chehab runtime->hw.period_bytes_max = bpl;
429b285192aSMauro Carvalho Chehab }
430b285192aSMauro Carvalho Chehab
431b285192aSMauro Carvalho Chehab return 0;
432b285192aSMauro Carvalho Chehab _error:
433b285192aSMauro Carvalho Chehab dprintk(1, "Error opening PCM!\n");
434b285192aSMauro Carvalho Chehab return err;
435b285192aSMauro Carvalho Chehab }
436b285192aSMauro Carvalho Chehab
437b285192aSMauro Carvalho Chehab /*
438b285192aSMauro Carvalho Chehab * audio close callback
439b285192aSMauro Carvalho Chehab */
snd_cx88_close(struct snd_pcm_substream * substream)440b285192aSMauro Carvalho Chehab static int snd_cx88_close(struct snd_pcm_substream *substream)
441b285192aSMauro Carvalho Chehab {
442b285192aSMauro Carvalho Chehab return 0;
443b285192aSMauro Carvalho Chehab }
444b285192aSMauro Carvalho Chehab
445b285192aSMauro Carvalho Chehab /*
446b285192aSMauro Carvalho Chehab * hw_params callback
447b285192aSMauro Carvalho Chehab */
snd_cx88_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)448b285192aSMauro Carvalho Chehab static int snd_cx88_hw_params(struct snd_pcm_substream *substream,
449b285192aSMauro Carvalho Chehab struct snd_pcm_hw_params *hw_params)
450b285192aSMauro Carvalho Chehab {
451399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream);
452b285192aSMauro Carvalho Chehab
453b285192aSMauro Carvalho Chehab struct cx88_audio_buffer *buf;
454b285192aSMauro Carvalho Chehab int ret;
455b285192aSMauro Carvalho Chehab
456b285192aSMauro Carvalho Chehab if (substream->runtime->dma_area) {
457b285192aSMauro Carvalho Chehab dsp_buffer_free(chip);
458b285192aSMauro Carvalho Chehab substream->runtime->dma_area = NULL;
459b285192aSMauro Carvalho Chehab }
460b285192aSMauro Carvalho Chehab
461b285192aSMauro Carvalho Chehab chip->period_size = params_period_bytes(hw_params);
462b285192aSMauro Carvalho Chehab chip->num_periods = params_periods(hw_params);
463b285192aSMauro Carvalho Chehab chip->dma_size = chip->period_size * params_periods(hw_params);
464b285192aSMauro Carvalho Chehab
465399426caSMauro Carvalho Chehab WARN_ON(!chip->dma_size);
466399426caSMauro Carvalho Chehab WARN_ON(chip->num_periods & (chip->num_periods - 1));
467b285192aSMauro Carvalho Chehab
468b285192aSMauro Carvalho Chehab buf = kzalloc(sizeof(*buf), GFP_KERNEL);
469399426caSMauro Carvalho Chehab if (!buf)
470b285192aSMauro Carvalho Chehab return -ENOMEM;
471b285192aSMauro Carvalho Chehab
472b2c75abdSHans Verkuil chip->buf = buf;
473b285192aSMauro Carvalho Chehab buf->bpl = chip->period_size;
474b285192aSMauro Carvalho Chehab
475b2c75abdSHans Verkuil ret = cx88_alsa_dma_init(chip,
476b285192aSMauro Carvalho Chehab (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
477b285192aSMauro Carvalho Chehab if (ret < 0)
478b285192aSMauro Carvalho Chehab goto error;
479b285192aSMauro Carvalho Chehab
480b2c75abdSHans Verkuil ret = cx88_alsa_dma_map(chip);
481b285192aSMauro Carvalho Chehab if (ret < 0)
482b285192aSMauro Carvalho Chehab goto error;
483b285192aSMauro Carvalho Chehab
484b2c75abdSHans Verkuil ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->sglist,
485b285192aSMauro Carvalho Chehab chip->period_size, chip->num_periods, 1);
486b285192aSMauro Carvalho Chehab if (ret < 0)
487b285192aSMauro Carvalho Chehab goto error;
488b285192aSMauro Carvalho Chehab
489b285192aSMauro Carvalho Chehab /* Loop back to start of program */
490b285192aSMauro Carvalho Chehab buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
491b285192aSMauro Carvalho Chehab buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
492b285192aSMauro Carvalho Chehab
493b2c75abdSHans Verkuil substream->runtime->dma_area = chip->buf->vaddr;
494b285192aSMauro Carvalho Chehab substream->runtime->dma_bytes = chip->dma_size;
495b285192aSMauro Carvalho Chehab substream->runtime->dma_addr = 0;
496b285192aSMauro Carvalho Chehab return 0;
497b285192aSMauro Carvalho Chehab
498b285192aSMauro Carvalho Chehab error:
499b285192aSMauro Carvalho Chehab kfree(buf);
500b285192aSMauro Carvalho Chehab return ret;
501b285192aSMauro Carvalho Chehab }
502b285192aSMauro Carvalho Chehab
503b285192aSMauro Carvalho Chehab /*
504b285192aSMauro Carvalho Chehab * hw free callback
505b285192aSMauro Carvalho Chehab */
snd_cx88_hw_free(struct snd_pcm_substream * substream)506b285192aSMauro Carvalho Chehab static int snd_cx88_hw_free(struct snd_pcm_substream *substream)
507b285192aSMauro Carvalho Chehab {
508399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream);
509b285192aSMauro Carvalho Chehab
510b285192aSMauro Carvalho Chehab if (substream->runtime->dma_area) {
511b285192aSMauro Carvalho Chehab dsp_buffer_free(chip);
512b285192aSMauro Carvalho Chehab substream->runtime->dma_area = NULL;
513b285192aSMauro Carvalho Chehab }
514b285192aSMauro Carvalho Chehab
515b285192aSMauro Carvalho Chehab return 0;
516b285192aSMauro Carvalho Chehab }
517b285192aSMauro Carvalho Chehab
518b285192aSMauro Carvalho Chehab /*
519b285192aSMauro Carvalho Chehab * prepare callback
520b285192aSMauro Carvalho Chehab */
snd_cx88_prepare(struct snd_pcm_substream * substream)521b285192aSMauro Carvalho Chehab static int snd_cx88_prepare(struct snd_pcm_substream *substream)
522b285192aSMauro Carvalho Chehab {
523b285192aSMauro Carvalho Chehab return 0;
524b285192aSMauro Carvalho Chehab }
525b285192aSMauro Carvalho Chehab
526b285192aSMauro Carvalho Chehab /*
527b285192aSMauro Carvalho Chehab * trigger callback
528b285192aSMauro Carvalho Chehab */
snd_cx88_card_trigger(struct snd_pcm_substream * substream,int cmd)529b285192aSMauro Carvalho Chehab static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
530b285192aSMauro Carvalho Chehab {
531399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream);
532b285192aSMauro Carvalho Chehab int err;
533b285192aSMauro Carvalho Chehab
534b285192aSMauro Carvalho Chehab /* Local interrupts are already disabled by ALSA */
535b285192aSMauro Carvalho Chehab spin_lock(&chip->reg_lock);
536b285192aSMauro Carvalho Chehab
537b285192aSMauro Carvalho Chehab switch (cmd) {
538b285192aSMauro Carvalho Chehab case SNDRV_PCM_TRIGGER_START:
539b285192aSMauro Carvalho Chehab err = _cx88_start_audio_dma(chip);
540b285192aSMauro Carvalho Chehab break;
541b285192aSMauro Carvalho Chehab case SNDRV_PCM_TRIGGER_STOP:
542b285192aSMauro Carvalho Chehab err = _cx88_stop_audio_dma(chip);
543b285192aSMauro Carvalho Chehab break;
544b285192aSMauro Carvalho Chehab default:
545b285192aSMauro Carvalho Chehab err = -EINVAL;
546b285192aSMauro Carvalho Chehab break;
547b285192aSMauro Carvalho Chehab }
548b285192aSMauro Carvalho Chehab
549b285192aSMauro Carvalho Chehab spin_unlock(&chip->reg_lock);
550b285192aSMauro Carvalho Chehab
551b285192aSMauro Carvalho Chehab return err;
552b285192aSMauro Carvalho Chehab }
553b285192aSMauro Carvalho Chehab
554b285192aSMauro Carvalho Chehab /*
555b285192aSMauro Carvalho Chehab * pointer callback
556b285192aSMauro Carvalho Chehab */
snd_cx88_pointer(struct snd_pcm_substream * substream)557b285192aSMauro Carvalho Chehab static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
558b285192aSMauro Carvalho Chehab {
559399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream);
560b285192aSMauro Carvalho Chehab struct snd_pcm_runtime *runtime = substream->runtime;
561b285192aSMauro Carvalho Chehab u16 count;
562b285192aSMauro Carvalho Chehab
563b285192aSMauro Carvalho Chehab count = atomic_read(&chip->count);
564b285192aSMauro Carvalho Chehab
565b285192aSMauro Carvalho Chehab // dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
566b285192aSMauro Carvalho Chehab // count, new, count & (runtime->periods-1),
567b285192aSMauro Carvalho Chehab // runtime->period_size * (count & (runtime->periods-1)));
568b285192aSMauro Carvalho Chehab return runtime->period_size * (count & (runtime->periods - 1));
569b285192aSMauro Carvalho Chehab }
570b285192aSMauro Carvalho Chehab
571b285192aSMauro Carvalho Chehab /*
572b285192aSMauro Carvalho Chehab * page callback (needed for mmap)
573b285192aSMauro Carvalho Chehab */
snd_cx88_page(struct snd_pcm_substream * substream,unsigned long offset)574b285192aSMauro Carvalho Chehab static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
575b285192aSMauro Carvalho Chehab unsigned long offset)
576b285192aSMauro Carvalho Chehab {
577b285192aSMauro Carvalho Chehab void *pageptr = substream->runtime->dma_area + offset;
5787b61ba8fSMauro Carvalho Chehab
579b285192aSMauro Carvalho Chehab return vmalloc_to_page(pageptr);
580b285192aSMauro Carvalho Chehab }
581b285192aSMauro Carvalho Chehab
582b285192aSMauro Carvalho Chehab /*
583b285192aSMauro Carvalho Chehab * operators
584b285192aSMauro Carvalho Chehab */
5855c8d8c01SJulia Lawall static const struct snd_pcm_ops snd_cx88_pcm_ops = {
586b285192aSMauro Carvalho Chehab .open = snd_cx88_pcm_open,
587b285192aSMauro Carvalho Chehab .close = snd_cx88_close,
588b285192aSMauro Carvalho Chehab .hw_params = snd_cx88_hw_params,
589b285192aSMauro Carvalho Chehab .hw_free = snd_cx88_hw_free,
590b285192aSMauro Carvalho Chehab .prepare = snd_cx88_prepare,
591b285192aSMauro Carvalho Chehab .trigger = snd_cx88_card_trigger,
592b285192aSMauro Carvalho Chehab .pointer = snd_cx88_pointer,
593b285192aSMauro Carvalho Chehab .page = snd_cx88_page,
594b285192aSMauro Carvalho Chehab };
595b285192aSMauro Carvalho Chehab
596b285192aSMauro Carvalho Chehab /*
597b285192aSMauro Carvalho Chehab * create a PCM device
598b285192aSMauro Carvalho Chehab */
snd_cx88_pcm(struct cx88_audio_dev * chip,int device,const char * name)599399426caSMauro Carvalho Chehab static int snd_cx88_pcm(struct cx88_audio_dev *chip, int device,
600399426caSMauro Carvalho Chehab const char *name)
601b285192aSMauro Carvalho Chehab {
602b285192aSMauro Carvalho Chehab int err;
603b285192aSMauro Carvalho Chehab struct snd_pcm *pcm;
604b285192aSMauro Carvalho Chehab
605b285192aSMauro Carvalho Chehab err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
606b285192aSMauro Carvalho Chehab if (err < 0)
607b285192aSMauro Carvalho Chehab return err;
608b285192aSMauro Carvalho Chehab pcm->private_data = chip;
609cc1e6315SMauro Carvalho Chehab strscpy(pcm->name, name, sizeof(pcm->name));
610b285192aSMauro Carvalho Chehab snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
611b285192aSMauro Carvalho Chehab
612b285192aSMauro Carvalho Chehab return 0;
613b285192aSMauro Carvalho Chehab }
614b285192aSMauro Carvalho Chehab
615399426caSMauro Carvalho Chehab /*
616399426caSMauro Carvalho Chehab * CONTROL INTERFACE
617399426caSMauro Carvalho Chehab */
snd_cx88_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * info)618b285192aSMauro Carvalho Chehab static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
619b285192aSMauro Carvalho Chehab struct snd_ctl_elem_info *info)
620b285192aSMauro Carvalho Chehab {
621b285192aSMauro Carvalho Chehab info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
622b285192aSMauro Carvalho Chehab info->count = 2;
623b285192aSMauro Carvalho Chehab info->value.integer.min = 0;
624b285192aSMauro Carvalho Chehab info->value.integer.max = 0x3f;
625b285192aSMauro Carvalho Chehab
626b285192aSMauro Carvalho Chehab return 0;
627b285192aSMauro Carvalho Chehab }
628b285192aSMauro Carvalho Chehab
snd_cx88_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)629b285192aSMauro Carvalho Chehab static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
630b285192aSMauro Carvalho Chehab struct snd_ctl_elem_value *value)
631b285192aSMauro Carvalho Chehab {
632399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
633b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
634b285192aSMauro Carvalho Chehab int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
635b285192aSMauro Carvalho Chehab bal = cx_read(AUD_BAL_CTL);
636b285192aSMauro Carvalho Chehab
637b285192aSMauro Carvalho Chehab value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
638b285192aSMauro Carvalho Chehab vol -= (bal & 0x3f);
639b285192aSMauro Carvalho Chehab value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
640b285192aSMauro Carvalho Chehab
641b285192aSMauro Carvalho Chehab return 0;
642b285192aSMauro Carvalho Chehab }
643b285192aSMauro Carvalho Chehab
snd_cx88_wm8775_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)644b285192aSMauro Carvalho Chehab static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol,
645b285192aSMauro Carvalho Chehab struct snd_ctl_elem_value *value)
646b285192aSMauro Carvalho Chehab {
647399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
648b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
649aea629c1SMauro Carvalho Chehab u16 left = value->value.integer.value[0];
650aea629c1SMauro Carvalho Chehab u16 right = value->value.integer.value[1];
651b285192aSMauro Carvalho Chehab int v, b;
652b285192aSMauro Carvalho Chehab
653b285192aSMauro Carvalho Chehab /* Pass volume & balance onto any WM8775 */
654b285192aSMauro Carvalho Chehab if (left >= right) {
655b285192aSMauro Carvalho Chehab v = left << 10;
656b285192aSMauro Carvalho Chehab b = left ? (0x8000 * right) / left : 0x8000;
657b285192aSMauro Carvalho Chehab } else {
658b285192aSMauro Carvalho Chehab v = right << 10;
659b285192aSMauro Carvalho Chehab b = right ? 0xffff - (0x8000 * left) / right : 0x8000;
660b285192aSMauro Carvalho Chehab }
661b285192aSMauro Carvalho Chehab wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v);
662b285192aSMauro Carvalho Chehab wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b);
663b285192aSMauro Carvalho Chehab }
664b285192aSMauro Carvalho Chehab
665b285192aSMauro Carvalho Chehab /* OK - TODO: test it */
snd_cx88_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)666b285192aSMauro Carvalho Chehab static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
667b285192aSMauro Carvalho Chehab struct snd_ctl_elem_value *value)
668b285192aSMauro Carvalho Chehab {
669399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
670b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
671b285192aSMauro Carvalho Chehab int left, right, v, b;
672b285192aSMauro Carvalho Chehab int changed = 0;
673b285192aSMauro Carvalho Chehab u32 old;
674b285192aSMauro Carvalho Chehab
675609c4c12SHans Verkuil if (core->sd_wm8775)
676b285192aSMauro Carvalho Chehab snd_cx88_wm8775_volume_put(kcontrol, value);
677b285192aSMauro Carvalho Chehab
678b285192aSMauro Carvalho Chehab left = value->value.integer.value[0] & 0x3f;
679b285192aSMauro Carvalho Chehab right = value->value.integer.value[1] & 0x3f;
680b285192aSMauro Carvalho Chehab b = right - left;
681b285192aSMauro Carvalho Chehab if (b < 0) {
682b285192aSMauro Carvalho Chehab v = 0x3f - left;
683b285192aSMauro Carvalho Chehab b = (-b) | 0x40;
684b285192aSMauro Carvalho Chehab } else {
685b285192aSMauro Carvalho Chehab v = 0x3f - right;
686b285192aSMauro Carvalho Chehab }
687b285192aSMauro Carvalho Chehab /* Do we really know this will always be called with IRQs on? */
688b285192aSMauro Carvalho Chehab spin_lock_irq(&chip->reg_lock);
689b285192aSMauro Carvalho Chehab old = cx_read(AUD_VOL_CTL);
690b285192aSMauro Carvalho Chehab if (v != (old & 0x3f)) {
691b285192aSMauro Carvalho Chehab cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
692b285192aSMauro Carvalho Chehab changed = 1;
693b285192aSMauro Carvalho Chehab }
694b285192aSMauro Carvalho Chehab if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
695b285192aSMauro Carvalho Chehab cx_write(AUD_BAL_CTL, b);
696b285192aSMauro Carvalho Chehab changed = 1;
697b285192aSMauro Carvalho Chehab }
698b285192aSMauro Carvalho Chehab spin_unlock_irq(&chip->reg_lock);
699b285192aSMauro Carvalho Chehab
700b285192aSMauro Carvalho Chehab return changed;
701b285192aSMauro Carvalho Chehab }
702b285192aSMauro Carvalho Chehab
703b285192aSMauro Carvalho Chehab static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
704b285192aSMauro Carvalho Chehab
705b285192aSMauro Carvalho Chehab static const struct snd_kcontrol_new snd_cx88_volume = {
706b285192aSMauro Carvalho Chehab .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
707b285192aSMauro Carvalho Chehab .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
708b285192aSMauro Carvalho Chehab SNDRV_CTL_ELEM_ACCESS_TLV_READ,
709b285192aSMauro Carvalho Chehab .name = "Analog-TV Volume",
710b285192aSMauro Carvalho Chehab .info = snd_cx88_volume_info,
711b285192aSMauro Carvalho Chehab .get = snd_cx88_volume_get,
712b285192aSMauro Carvalho Chehab .put = snd_cx88_volume_put,
713b285192aSMauro Carvalho Chehab .tlv.p = snd_cx88_db_scale,
714b285192aSMauro Carvalho Chehab };
715b285192aSMauro Carvalho Chehab
snd_cx88_switch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)716b285192aSMauro Carvalho Chehab static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
717b285192aSMauro Carvalho Chehab struct snd_ctl_elem_value *value)
718b285192aSMauro Carvalho Chehab {
719399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
720b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
721b285192aSMauro Carvalho Chehab u32 bit = kcontrol->private_value;
722b285192aSMauro Carvalho Chehab
723b285192aSMauro Carvalho Chehab value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
724b285192aSMauro Carvalho Chehab return 0;
725b285192aSMauro Carvalho Chehab }
726b285192aSMauro Carvalho Chehab
snd_cx88_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)727b285192aSMauro Carvalho Chehab static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
728b285192aSMauro Carvalho Chehab struct snd_ctl_elem_value *value)
729b285192aSMauro Carvalho Chehab {
730399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
731b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
732b285192aSMauro Carvalho Chehab u32 bit = kcontrol->private_value;
733b285192aSMauro Carvalho Chehab int ret = 0;
734b285192aSMauro Carvalho Chehab u32 vol;
735b285192aSMauro Carvalho Chehab
736b285192aSMauro Carvalho Chehab spin_lock_irq(&chip->reg_lock);
737b285192aSMauro Carvalho Chehab vol = cx_read(AUD_VOL_CTL);
738b285192aSMauro Carvalho Chehab if (value->value.integer.value[0] != !(vol & bit)) {
739b285192aSMauro Carvalho Chehab vol ^= bit;
740b285192aSMauro Carvalho Chehab cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
741b285192aSMauro Carvalho Chehab /* Pass mute onto any WM8775 */
742609c4c12SHans Verkuil if (core->sd_wm8775 && ((1 << 6) == bit))
743399426caSMauro Carvalho Chehab wm8775_s_ctrl(core,
744399426caSMauro Carvalho Chehab V4L2_CID_AUDIO_MUTE, 0 != (vol & bit));
745b285192aSMauro Carvalho Chehab ret = 1;
746b285192aSMauro Carvalho Chehab }
747b285192aSMauro Carvalho Chehab spin_unlock_irq(&chip->reg_lock);
748b285192aSMauro Carvalho Chehab return ret;
749b285192aSMauro Carvalho Chehab }
750b285192aSMauro Carvalho Chehab
751b285192aSMauro Carvalho Chehab static const struct snd_kcontrol_new snd_cx88_dac_switch = {
752b285192aSMauro Carvalho Chehab .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
753b285192aSMauro Carvalho Chehab .name = "Audio-Out Switch",
754b285192aSMauro Carvalho Chehab .info = snd_ctl_boolean_mono_info,
755b285192aSMauro Carvalho Chehab .get = snd_cx88_switch_get,
756b285192aSMauro Carvalho Chehab .put = snd_cx88_switch_put,
757b285192aSMauro Carvalho Chehab .private_value = (1 << 8),
758b285192aSMauro Carvalho Chehab };
759b285192aSMauro Carvalho Chehab
760b285192aSMauro Carvalho Chehab static const struct snd_kcontrol_new snd_cx88_source_switch = {
761b285192aSMauro Carvalho Chehab .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
762b285192aSMauro Carvalho Chehab .name = "Analog-TV Switch",
763b285192aSMauro Carvalho Chehab .info = snd_ctl_boolean_mono_info,
764b285192aSMauro Carvalho Chehab .get = snd_cx88_switch_get,
765b285192aSMauro Carvalho Chehab .put = snd_cx88_switch_put,
766b285192aSMauro Carvalho Chehab .private_value = (1 << 6),
767b285192aSMauro Carvalho Chehab };
768b285192aSMauro Carvalho Chehab
snd_cx88_alc_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)769b285192aSMauro Carvalho Chehab static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
770b285192aSMauro Carvalho Chehab struct snd_ctl_elem_value *value)
771b285192aSMauro Carvalho Chehab {
772399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
773b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
774b285192aSMauro Carvalho Chehab s32 val;
775b285192aSMauro Carvalho Chehab
776b285192aSMauro Carvalho Chehab val = wm8775_g_ctrl(core, V4L2_CID_AUDIO_LOUDNESS);
777b285192aSMauro Carvalho Chehab value->value.integer.value[0] = val ? 1 : 0;
778b285192aSMauro Carvalho Chehab return 0;
779b285192aSMauro Carvalho Chehab }
780b285192aSMauro Carvalho Chehab
snd_cx88_alc_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)781b285192aSMauro Carvalho Chehab static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
782b285192aSMauro Carvalho Chehab struct snd_ctl_elem_value *value)
783b285192aSMauro Carvalho Chehab {
784399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
785b285192aSMauro Carvalho Chehab struct cx88_core *core = chip->core;
786b285192aSMauro Carvalho Chehab
787c2c33c34SHans Verkuil wm8775_s_ctrl(core, V4L2_CID_AUDIO_LOUDNESS,
788c2c33c34SHans Verkuil value->value.integer.value[0] != 0);
789b285192aSMauro Carvalho Chehab return 0;
790b285192aSMauro Carvalho Chehab }
791b285192aSMauro Carvalho Chehab
7929a69ae1dSBhumika Goyal static const struct snd_kcontrol_new snd_cx88_alc_switch = {
793b285192aSMauro Carvalho Chehab .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
794b285192aSMauro Carvalho Chehab .name = "Line-In ALC Switch",
795b285192aSMauro Carvalho Chehab .info = snd_ctl_boolean_mono_info,
796b285192aSMauro Carvalho Chehab .get = snd_cx88_alc_get,
797b285192aSMauro Carvalho Chehab .put = snd_cx88_alc_put,
798b285192aSMauro Carvalho Chehab };
799b285192aSMauro Carvalho Chehab
800399426caSMauro Carvalho Chehab /*
801399426caSMauro Carvalho Chehab * Basic Flow for Sound Devices
802399426caSMauro Carvalho Chehab */
803b285192aSMauro Carvalho Chehab
804b285192aSMauro Carvalho Chehab /*
805b285192aSMauro Carvalho Chehab * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
806b285192aSMauro Carvalho Chehab * Only boards with eeprom and byte 1 at eeprom=1 have it
807b285192aSMauro Carvalho Chehab */
808b285192aSMauro Carvalho Chehab
8094c62e976SGreg Kroah-Hartman static const struct pci_device_id cx88_audio_pci_tbl[] = {
810b285192aSMauro Carvalho Chehab {0x14f1, 0x8801, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
811b285192aSMauro Carvalho Chehab {0x14f1, 0x8811, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
812b285192aSMauro Carvalho Chehab {0, }
813b285192aSMauro Carvalho Chehab };
814b285192aSMauro Carvalho Chehab MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
815b285192aSMauro Carvalho Chehab
816b285192aSMauro Carvalho Chehab /*
817b285192aSMauro Carvalho Chehab * Chip-specific destructor
818b285192aSMauro Carvalho Chehab */
819b285192aSMauro Carvalho Chehab
snd_cx88_free(struct cx88_audio_dev * chip)820399426caSMauro Carvalho Chehab static int snd_cx88_free(struct cx88_audio_dev *chip)
821b285192aSMauro Carvalho Chehab {
822b285192aSMauro Carvalho Chehab if (chip->irq >= 0)
823b285192aSMauro Carvalho Chehab free_irq(chip->irq, chip);
824b285192aSMauro Carvalho Chehab
825b285192aSMauro Carvalho Chehab cx88_core_put(chip->core, chip->pci);
826b285192aSMauro Carvalho Chehab
827b285192aSMauro Carvalho Chehab pci_disable_device(chip->pci);
828b285192aSMauro Carvalho Chehab return 0;
829b285192aSMauro Carvalho Chehab }
830b285192aSMauro Carvalho Chehab
831b285192aSMauro Carvalho Chehab /*
832b285192aSMauro Carvalho Chehab * Component Destructor
833b285192aSMauro Carvalho Chehab */
snd_cx88_dev_free(struct snd_card * card)834b285192aSMauro Carvalho Chehab static void snd_cx88_dev_free(struct snd_card *card)
835b285192aSMauro Carvalho Chehab {
836399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip = card->private_data;
837b285192aSMauro Carvalho Chehab
838b285192aSMauro Carvalho Chehab snd_cx88_free(chip);
839b285192aSMauro Carvalho Chehab }
840b285192aSMauro Carvalho Chehab
841b285192aSMauro Carvalho Chehab /*
842b285192aSMauro Carvalho Chehab * Alsa Constructor - Component probe
843b285192aSMauro Carvalho Chehab */
844b285192aSMauro Carvalho Chehab
845b285192aSMauro Carvalho Chehab static int devno;
snd_cx88_create(struct snd_card * card,struct pci_dev * pci,struct cx88_audio_dev ** rchip,struct cx88_core ** core_ptr)8464c62e976SGreg Kroah-Hartman static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci,
847399426caSMauro Carvalho Chehab struct cx88_audio_dev **rchip,
848b285192aSMauro Carvalho Chehab struct cx88_core **core_ptr)
849b285192aSMauro Carvalho Chehab {
850399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip;
851b285192aSMauro Carvalho Chehab struct cx88_core *core;
852b285192aSMauro Carvalho Chehab int err;
853b285192aSMauro Carvalho Chehab unsigned char pci_lat;
854b285192aSMauro Carvalho Chehab
855b285192aSMauro Carvalho Chehab *rchip = NULL;
856b285192aSMauro Carvalho Chehab
857b285192aSMauro Carvalho Chehab err = pci_enable_device(pci);
858b285192aSMauro Carvalho Chehab if (err < 0)
859b285192aSMauro Carvalho Chehab return err;
860b285192aSMauro Carvalho Chehab
861b285192aSMauro Carvalho Chehab pci_set_master(pci);
862b285192aSMauro Carvalho Chehab
863b285192aSMauro Carvalho Chehab chip = card->private_data;
864b285192aSMauro Carvalho Chehab
865b285192aSMauro Carvalho Chehab core = cx88_core_get(pci);
866399426caSMauro Carvalho Chehab if (!core) {
867b285192aSMauro Carvalho Chehab err = -EINVAL;
868b285192aSMauro Carvalho Chehab return err;
869b285192aSMauro Carvalho Chehab }
870b285192aSMauro Carvalho Chehab
871*00ae4ebcSChristophe JAILLET err = dma_set_mask(&pci->dev, DMA_BIT_MASK(32));
8721a47de6eSChristoph Hellwig if (err) {
873b285192aSMauro Carvalho Chehab dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n", core->name);
874b285192aSMauro Carvalho Chehab cx88_core_put(core, pci);
875b285192aSMauro Carvalho Chehab return err;
876b285192aSMauro Carvalho Chehab }
877b285192aSMauro Carvalho Chehab
878b285192aSMauro Carvalho Chehab /* pci init */
879b285192aSMauro Carvalho Chehab chip->card = card;
880b285192aSMauro Carvalho Chehab chip->pci = pci;
881b285192aSMauro Carvalho Chehab chip->irq = -1;
882b285192aSMauro Carvalho Chehab spin_lock_init(&chip->reg_lock);
883b285192aSMauro Carvalho Chehab
884b285192aSMauro Carvalho Chehab chip->core = core;
885b285192aSMauro Carvalho Chehab
886b285192aSMauro Carvalho Chehab /* get irq */
887b285192aSMauro Carvalho Chehab err = request_irq(chip->pci->irq, cx8801_irq,
8883e018fe4SMichael Opdenacker IRQF_SHARED, chip->core->name, chip);
889b285192aSMauro Carvalho Chehab if (err < 0) {
890b285192aSMauro Carvalho Chehab dprintk(0, "%s: can't get IRQ %d\n",
891b285192aSMauro Carvalho Chehab chip->core->name, chip->pci->irq);
892b285192aSMauro Carvalho Chehab return err;
893b285192aSMauro Carvalho Chehab }
894b285192aSMauro Carvalho Chehab
895b285192aSMauro Carvalho Chehab /* print pci info */
896b285192aSMauro Carvalho Chehab pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
897b285192aSMauro Carvalho Chehab
898399426caSMauro Carvalho Chehab dprintk(1,
899399426caSMauro Carvalho Chehab "ALSA %s/%i: found at %s, rev: %d, irq: %d, latency: %d, mmio: 0x%llx\n",
900e318e584SMauro Carvalho Chehab core->name, devno,
901b285192aSMauro Carvalho Chehab pci_name(pci), pci->revision, pci->irq,
902b285192aSMauro Carvalho Chehab pci_lat, (unsigned long long)pci_resource_start(pci, 0));
903b285192aSMauro Carvalho Chehab
904b285192aSMauro Carvalho Chehab chip->irq = pci->irq;
905b285192aSMauro Carvalho Chehab synchronize_irq(chip->irq);
906b285192aSMauro Carvalho Chehab
907b285192aSMauro Carvalho Chehab *rchip = chip;
908b285192aSMauro Carvalho Chehab *core_ptr = core;
909b285192aSMauro Carvalho Chehab
910b285192aSMauro Carvalho Chehab return 0;
911b285192aSMauro Carvalho Chehab }
912b285192aSMauro Carvalho Chehab
cx88_audio_initdev(struct pci_dev * pci,const struct pci_device_id * pci_id)9134c62e976SGreg Kroah-Hartman static int cx88_audio_initdev(struct pci_dev *pci,
914b285192aSMauro Carvalho Chehab const struct pci_device_id *pci_id)
915b285192aSMauro Carvalho Chehab {
916b285192aSMauro Carvalho Chehab struct snd_card *card;
917399426caSMauro Carvalho Chehab struct cx88_audio_dev *chip;
918b285192aSMauro Carvalho Chehab struct cx88_core *core = NULL;
919b285192aSMauro Carvalho Chehab int err;
920b285192aSMauro Carvalho Chehab
921b285192aSMauro Carvalho Chehab if (devno >= SNDRV_CARDS)
922b285192aSMauro Carvalho Chehab return (-ENODEV);
923b285192aSMauro Carvalho Chehab
924b285192aSMauro Carvalho Chehab if (!enable[devno]) {
925b285192aSMauro Carvalho Chehab ++devno;
926b285192aSMauro Carvalho Chehab return (-ENOENT);
927b285192aSMauro Carvalho Chehab }
928b285192aSMauro Carvalho Chehab
929e7356888STakashi Iwai err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE,
930399426caSMauro Carvalho Chehab sizeof(struct cx88_audio_dev), &card);
931b285192aSMauro Carvalho Chehab if (err < 0)
932b285192aSMauro Carvalho Chehab return err;
933b285192aSMauro Carvalho Chehab
934b285192aSMauro Carvalho Chehab card->private_free = snd_cx88_dev_free;
935b285192aSMauro Carvalho Chehab
936b285192aSMauro Carvalho Chehab err = snd_cx88_create(card, pci, &chip, &core);
937b285192aSMauro Carvalho Chehab if (err < 0)
938b285192aSMauro Carvalho Chehab goto error;
939b285192aSMauro Carvalho Chehab
940b285192aSMauro Carvalho Chehab err = snd_cx88_pcm(chip, 0, "CX88 Digital");
941b285192aSMauro Carvalho Chehab if (err < 0)
942b285192aSMauro Carvalho Chehab goto error;
943b285192aSMauro Carvalho Chehab
944b285192aSMauro Carvalho Chehab err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
945b285192aSMauro Carvalho Chehab if (err < 0)
946b285192aSMauro Carvalho Chehab goto error;
947b285192aSMauro Carvalho Chehab err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
948b285192aSMauro Carvalho Chehab if (err < 0)
949b285192aSMauro Carvalho Chehab goto error;
950b285192aSMauro Carvalho Chehab err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
951b285192aSMauro Carvalho Chehab if (err < 0)
952b285192aSMauro Carvalho Chehab goto error;
953b285192aSMauro Carvalho Chehab
954b285192aSMauro Carvalho Chehab /* If there's a wm8775 then add a Line-In ALC switch */
9556c8871baSZhouyang Jia if (core->sd_wm8775) {
9566c8871baSZhouyang Jia err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip));
9576c8871baSZhouyang Jia if (err < 0)
9586c8871baSZhouyang Jia goto error;
9596c8871baSZhouyang Jia }
960b285192aSMauro Carvalho Chehab
961cc1e6315SMauro Carvalho Chehab strscpy(card->driver, "CX88x", sizeof(card->driver));
962b285192aSMauro Carvalho Chehab sprintf(card->shortname, "Conexant CX%x", pci->device);
963b285192aSMauro Carvalho Chehab sprintf(card->longname, "%s at %#llx",
9647b61ba8fSMauro Carvalho Chehab card->shortname,
9657b61ba8fSMauro Carvalho Chehab (unsigned long long)pci_resource_start(pci, 0));
966cc1e6315SMauro Carvalho Chehab strscpy(card->mixername, "CX88", sizeof(card->mixername));
967b285192aSMauro Carvalho Chehab
968b285192aSMauro Carvalho Chehab dprintk(0, "%s/%i: ALSA support for cx2388x boards\n",
969b285192aSMauro Carvalho Chehab card->driver, devno);
970b285192aSMauro Carvalho Chehab
971b285192aSMauro Carvalho Chehab err = snd_card_register(card);
972b285192aSMauro Carvalho Chehab if (err < 0)
973b285192aSMauro Carvalho Chehab goto error;
974b285192aSMauro Carvalho Chehab pci_set_drvdata(pci, card);
975b285192aSMauro Carvalho Chehab
976b285192aSMauro Carvalho Chehab devno++;
977b285192aSMauro Carvalho Chehab return 0;
978b285192aSMauro Carvalho Chehab
979b285192aSMauro Carvalho Chehab error:
980b285192aSMauro Carvalho Chehab snd_card_free(card);
981b285192aSMauro Carvalho Chehab return err;
982b285192aSMauro Carvalho Chehab }
983399426caSMauro Carvalho Chehab
984b285192aSMauro Carvalho Chehab /*
985b285192aSMauro Carvalho Chehab * ALSA destructor
986b285192aSMauro Carvalho Chehab */
cx88_audio_finidev(struct pci_dev * pci)9874c62e976SGreg Kroah-Hartman static void cx88_audio_finidev(struct pci_dev *pci)
988b285192aSMauro Carvalho Chehab {
989cd86e3b5SWei Yongjun struct snd_card *card = pci_get_drvdata(pci);
990b285192aSMauro Carvalho Chehab
991cd86e3b5SWei Yongjun snd_card_free(card);
992b285192aSMauro Carvalho Chehab
993b285192aSMauro Carvalho Chehab devno--;
994b285192aSMauro Carvalho Chehab }
995b285192aSMauro Carvalho Chehab
996b285192aSMauro Carvalho Chehab /*
997b285192aSMauro Carvalho Chehab * PCI driver definition
998b285192aSMauro Carvalho Chehab */
999b285192aSMauro Carvalho Chehab
1000b285192aSMauro Carvalho Chehab static struct pci_driver cx88_audio_pci_driver = {
1001b285192aSMauro Carvalho Chehab .name = "cx88_audio",
1002b285192aSMauro Carvalho Chehab .id_table = cx88_audio_pci_tbl,
1003b285192aSMauro Carvalho Chehab .probe = cx88_audio_initdev,
10044c62e976SGreg Kroah-Hartman .remove = cx88_audio_finidev,
1005b285192aSMauro Carvalho Chehab };
1006b285192aSMauro Carvalho Chehab
100759963b94SSachin Kamat module_pci_driver(cx88_audio_pci_driver);
1008