150acfb2bSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2b285192aSMauro Carvalho Chehab /*
3b285192aSMauro Carvalho Chehab * Driver for the Conexant CX25821 PCIe bridge
4b285192aSMauro Carvalho Chehab *
5b285192aSMauro Carvalho Chehab * Copyright (C) 2009 Conexant Systems Inc.
6b285192aSMauro Carvalho Chehab * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
7b285192aSMauro Carvalho Chehab * Based on SAA713x ALSA driver and CX88 driver
8b285192aSMauro Carvalho Chehab */
9b285192aSMauro Carvalho Chehab
10b285192aSMauro Carvalho Chehab #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11b285192aSMauro Carvalho Chehab
12b285192aSMauro Carvalho Chehab #include <linux/module.h>
13b285192aSMauro Carvalho Chehab #include <linux/init.h>
14b285192aSMauro Carvalho Chehab #include <linux/device.h>
15b285192aSMauro Carvalho Chehab #include <linux/interrupt.h>
16b285192aSMauro Carvalho Chehab #include <linux/vmalloc.h>
17b285192aSMauro Carvalho Chehab #include <linux/dma-mapping.h>
18b285192aSMauro Carvalho Chehab #include <linux/pci.h>
19b285192aSMauro Carvalho Chehab #include <linux/slab.h>
20b285192aSMauro Carvalho Chehab
21b285192aSMauro Carvalho Chehab #include <linux/delay.h>
22b285192aSMauro Carvalho Chehab #include <sound/core.h>
23b285192aSMauro Carvalho Chehab #include <sound/pcm.h>
24b285192aSMauro Carvalho Chehab #include <sound/pcm_params.h>
25b285192aSMauro Carvalho Chehab #include <sound/control.h>
26b285192aSMauro Carvalho Chehab #include <sound/initval.h>
27b285192aSMauro Carvalho Chehab #include <sound/tlv.h>
28b285192aSMauro Carvalho Chehab
29b285192aSMauro Carvalho Chehab #include "cx25821.h"
30b285192aSMauro Carvalho Chehab #include "cx25821-reg.h"
31b285192aSMauro Carvalho Chehab
32b285192aSMauro Carvalho Chehab #define AUDIO_SRAM_CHANNEL SRAM_CH08
33b285192aSMauro Carvalho Chehab
34b285192aSMauro Carvalho Chehab #define dprintk(level, fmt, arg...) \
35b285192aSMauro Carvalho Chehab do { \
36b285192aSMauro Carvalho Chehab if (debug >= level) \
37b285192aSMauro Carvalho Chehab pr_info("%s/1: " fmt, chip->dev->name, ##arg); \
38b285192aSMauro Carvalho Chehab } while (0)
39b285192aSMauro Carvalho Chehab #define dprintk_core(level, fmt, arg...) \
40b285192aSMauro Carvalho Chehab do { \
41b285192aSMauro Carvalho Chehab if (debug >= level) \
42b285192aSMauro Carvalho Chehab printk(KERN_DEBUG "%s/1: " fmt, chip->dev->name, ##arg); \
43b285192aSMauro Carvalho Chehab } while (0)
44b285192aSMauro Carvalho Chehab
45b285192aSMauro Carvalho Chehab /****************************************************************************
46b285192aSMauro Carvalho Chehab Data type declarations - Can be moded to a header file later
47b285192aSMauro Carvalho Chehab ****************************************************************************/
48b285192aSMauro Carvalho Chehab
49b285192aSMauro Carvalho Chehab static int devno;
50b285192aSMauro Carvalho Chehab
51b285192aSMauro Carvalho Chehab struct cx25821_audio_buffer {
52b285192aSMauro Carvalho Chehab unsigned int bpl;
535ede94c7SHans Verkuil struct cx25821_riscmem risc;
548d8e6d60SHans Verkuil void *vaddr;
558d8e6d60SHans Verkuil struct scatterlist *sglist;
568d8e6d60SHans Verkuil int sglen;
5799c2ec04SMauro Carvalho Chehab unsigned long nr_pages;
58b285192aSMauro Carvalho Chehab };
59b285192aSMauro Carvalho Chehab
60b285192aSMauro Carvalho Chehab struct cx25821_audio_dev {
61b285192aSMauro Carvalho Chehab struct cx25821_dev *dev;
62b285192aSMauro Carvalho Chehab struct cx25821_dmaqueue q;
63b285192aSMauro Carvalho Chehab
64b285192aSMauro Carvalho Chehab /* pci i/o */
65b285192aSMauro Carvalho Chehab struct pci_dev *pci;
66b285192aSMauro Carvalho Chehab
67b285192aSMauro Carvalho Chehab /* audio controls */
68b285192aSMauro Carvalho Chehab int irq;
69b285192aSMauro Carvalho Chehab
70b285192aSMauro Carvalho Chehab struct snd_card *card;
71b285192aSMauro Carvalho Chehab
72b285192aSMauro Carvalho Chehab unsigned long iobase;
73b285192aSMauro Carvalho Chehab spinlock_t reg_lock;
74b285192aSMauro Carvalho Chehab atomic_t count;
75b285192aSMauro Carvalho Chehab
76b285192aSMauro Carvalho Chehab unsigned int dma_size;
77b285192aSMauro Carvalho Chehab unsigned int period_size;
78b285192aSMauro Carvalho Chehab unsigned int num_periods;
79b285192aSMauro Carvalho Chehab
80b285192aSMauro Carvalho Chehab struct cx25821_audio_buffer *buf;
81b285192aSMauro Carvalho Chehab
82b285192aSMauro Carvalho Chehab struct snd_pcm_substream *substream;
83b285192aSMauro Carvalho Chehab };
84b285192aSMauro Carvalho Chehab
85b285192aSMauro Carvalho Chehab
86b285192aSMauro Carvalho Chehab /****************************************************************************
87b285192aSMauro Carvalho Chehab Module global static vars
88b285192aSMauro Carvalho Chehab ****************************************************************************/
89b285192aSMauro Carvalho Chehab
90b285192aSMauro Carvalho Chehab static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
91b285192aSMauro Carvalho Chehab static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
92d275d935SLuis de Bethencourt static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
93b285192aSMauro Carvalho Chehab
94b285192aSMauro Carvalho Chehab module_param_array(enable, bool, NULL, 0444);
95b285192aSMauro Carvalho Chehab MODULE_PARM_DESC(enable, "Enable cx25821 soundcard. default enabled.");
96b285192aSMauro Carvalho Chehab
97b285192aSMauro Carvalho Chehab module_param_array(index, int, NULL, 0444);
98b285192aSMauro Carvalho Chehab MODULE_PARM_DESC(index, "Index value for cx25821 capture interface(s).");
99b285192aSMauro Carvalho Chehab
100b285192aSMauro Carvalho Chehab /****************************************************************************
101b285192aSMauro Carvalho Chehab Module macros
102b285192aSMauro Carvalho Chehab ****************************************************************************/
103b285192aSMauro Carvalho Chehab
104b285192aSMauro Carvalho Chehab MODULE_DESCRIPTION("ALSA driver module for cx25821 based capture cards");
105b285192aSMauro Carvalho Chehab MODULE_AUTHOR("Hiep Huynh");
106b285192aSMauro Carvalho Chehab MODULE_LICENSE("GPL");
107b285192aSMauro Carvalho Chehab
108b285192aSMauro Carvalho Chehab static unsigned int debug;
109b285192aSMauro Carvalho Chehab module_param(debug, int, 0644);
110b285192aSMauro Carvalho Chehab MODULE_PARM_DESC(debug, "enable debug messages");
111b285192aSMauro Carvalho Chehab
112b285192aSMauro Carvalho Chehab /****************************************************************************
11316790554SMauro Carvalho Chehab Module specific functions
114b285192aSMauro Carvalho Chehab ****************************************************************************/
115b285192aSMauro Carvalho Chehab /* Constants taken from cx88-reg.h */
116b285192aSMauro Carvalho Chehab #define AUD_INT_DN_RISCI1 (1 << 0)
117b285192aSMauro Carvalho Chehab #define AUD_INT_UP_RISCI1 (1 << 1)
118b285192aSMauro Carvalho Chehab #define AUD_INT_RDS_DN_RISCI1 (1 << 2)
119b285192aSMauro Carvalho Chehab #define AUD_INT_DN_RISCI2 (1 << 4) /* yes, 3 is skipped */
120b285192aSMauro Carvalho Chehab #define AUD_INT_UP_RISCI2 (1 << 5)
121b285192aSMauro Carvalho Chehab #define AUD_INT_RDS_DN_RISCI2 (1 << 6)
122b285192aSMauro Carvalho Chehab #define AUD_INT_DN_SYNC (1 << 12)
123b285192aSMauro Carvalho Chehab #define AUD_INT_UP_SYNC (1 << 13)
124b285192aSMauro Carvalho Chehab #define AUD_INT_RDS_DN_SYNC (1 << 14)
125b285192aSMauro Carvalho Chehab #define AUD_INT_OPC_ERR (1 << 16)
126b285192aSMauro Carvalho Chehab #define AUD_INT_BER_IRQ (1 << 20)
127b285192aSMauro Carvalho Chehab #define AUD_INT_MCHG_IRQ (1 << 21)
128b285192aSMauro Carvalho Chehab #define GP_COUNT_CONTROL_RESET 0x3
129b285192aSMauro Carvalho Chehab
130b285192aSMauro Carvalho Chehab #define PCI_MSK_AUD_EXT (1 << 4)
131b285192aSMauro Carvalho Chehab #define PCI_MSK_AUD_INT (1 << 3)
1328d8e6d60SHans Verkuil
cx25821_alsa_dma_init(struct cx25821_audio_dev * chip,unsigned long nr_pages)13399c2ec04SMauro Carvalho Chehab static int cx25821_alsa_dma_init(struct cx25821_audio_dev *chip,
13499c2ec04SMauro Carvalho Chehab unsigned long nr_pages)
1358d8e6d60SHans Verkuil {
1368d8e6d60SHans Verkuil struct cx25821_audio_buffer *buf = chip->buf;
1378d8e6d60SHans Verkuil struct page *pg;
1388d8e6d60SHans Verkuil int i;
1398d8e6d60SHans Verkuil
1408d8e6d60SHans Verkuil buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT);
1418d8e6d60SHans Verkuil if (NULL == buf->vaddr) {
14299c2ec04SMauro Carvalho Chehab dprintk(1, "vmalloc_32(%lu pages) failed\n", nr_pages);
1438d8e6d60SHans Verkuil return -ENOMEM;
1448d8e6d60SHans Verkuil }
1458d8e6d60SHans Verkuil
14699c2ec04SMauro Carvalho Chehab dprintk(1, "vmalloc is at addr 0x%p, size=%lu\n",
14704f849c0SMauro Carvalho Chehab buf->vaddr,
1488d8e6d60SHans Verkuil nr_pages << PAGE_SHIFT);
1498d8e6d60SHans Verkuil
1508d8e6d60SHans Verkuil memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT);
1518d8e6d60SHans Verkuil buf->nr_pages = nr_pages;
1528d8e6d60SHans Verkuil
153fad953ceSKees Cook buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages));
1548d8e6d60SHans Verkuil if (NULL == buf->sglist)
1558d8e6d60SHans Verkuil goto vzalloc_err;
1568d8e6d60SHans Verkuil
1578d8e6d60SHans Verkuil sg_init_table(buf->sglist, buf->nr_pages);
1588d8e6d60SHans Verkuil for (i = 0; i < buf->nr_pages; i++) {
1598d8e6d60SHans Verkuil pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE);
1608d8e6d60SHans Verkuil if (NULL == pg)
1618d8e6d60SHans Verkuil goto vmalloc_to_page_err;
1628d8e6d60SHans Verkuil sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0);
1638d8e6d60SHans Verkuil }
1648d8e6d60SHans Verkuil return 0;
1658d8e6d60SHans Verkuil
1668d8e6d60SHans Verkuil vmalloc_to_page_err:
1678d8e6d60SHans Verkuil vfree(buf->sglist);
1688d8e6d60SHans Verkuil buf->sglist = NULL;
1698d8e6d60SHans Verkuil vzalloc_err:
1708d8e6d60SHans Verkuil vfree(buf->vaddr);
1718d8e6d60SHans Verkuil buf->vaddr = NULL;
1728d8e6d60SHans Verkuil return -ENOMEM;
1738d8e6d60SHans Verkuil }
1748d8e6d60SHans Verkuil
cx25821_alsa_dma_map(struct cx25821_audio_dev * dev)1758d8e6d60SHans Verkuil static int cx25821_alsa_dma_map(struct cx25821_audio_dev *dev)
1768d8e6d60SHans Verkuil {
1778d8e6d60SHans Verkuil struct cx25821_audio_buffer *buf = dev->buf;
1788d8e6d60SHans Verkuil
1798d8e6d60SHans Verkuil buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist,
180f95fc014SMarek Szyprowski buf->nr_pages, DMA_FROM_DEVICE);
1818d8e6d60SHans Verkuil
1828d8e6d60SHans Verkuil if (0 == buf->sglen) {
1838d8e6d60SHans Verkuil pr_warn("%s: cx25821_alsa_map_sg failed\n", __func__);
1848d8e6d60SHans Verkuil return -ENOMEM;
1858d8e6d60SHans Verkuil }
1868d8e6d60SHans Verkuil return 0;
1878d8e6d60SHans Verkuil }
1888d8e6d60SHans Verkuil
cx25821_alsa_dma_unmap(struct cx25821_audio_dev * dev)1898d8e6d60SHans Verkuil static int cx25821_alsa_dma_unmap(struct cx25821_audio_dev *dev)
1908d8e6d60SHans Verkuil {
1918d8e6d60SHans Verkuil struct cx25821_audio_buffer *buf = dev->buf;
1928d8e6d60SHans Verkuil
1938d8e6d60SHans Verkuil if (!buf->sglen)
1948d8e6d60SHans Verkuil return 0;
1958d8e6d60SHans Verkuil
196f95fc014SMarek Szyprowski dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->nr_pages, DMA_FROM_DEVICE);
1978d8e6d60SHans Verkuil buf->sglen = 0;
1988d8e6d60SHans Verkuil return 0;
1998d8e6d60SHans Verkuil }
2008d8e6d60SHans Verkuil
cx25821_alsa_dma_free(struct cx25821_audio_buffer * buf)2018d8e6d60SHans Verkuil static int cx25821_alsa_dma_free(struct cx25821_audio_buffer *buf)
2028d8e6d60SHans Verkuil {
2038d8e6d60SHans Verkuil vfree(buf->sglist);
2048d8e6d60SHans Verkuil buf->sglist = NULL;
2058d8e6d60SHans Verkuil vfree(buf->vaddr);
2068d8e6d60SHans Verkuil buf->vaddr = NULL;
2078d8e6d60SHans Verkuil return 0;
2088d8e6d60SHans Verkuil }
2098d8e6d60SHans Verkuil
210b285192aSMauro Carvalho Chehab /*
211b285192aSMauro Carvalho Chehab * BOARD Specific: Sets audio DMA
212b285192aSMauro Carvalho Chehab */
213b285192aSMauro Carvalho Chehab
_cx25821_start_audio_dma(struct cx25821_audio_dev * chip)214b285192aSMauro Carvalho Chehab static int _cx25821_start_audio_dma(struct cx25821_audio_dev *chip)
215b285192aSMauro Carvalho Chehab {
216b285192aSMauro Carvalho Chehab struct cx25821_audio_buffer *buf = chip->buf;
217b285192aSMauro Carvalho Chehab struct cx25821_dev *dev = chip->dev;
218bfef0d35SHans Verkuil const struct sram_channel *audio_ch =
219b285192aSMauro Carvalho Chehab &cx25821_sram_channels[AUDIO_SRAM_CHANNEL];
220b285192aSMauro Carvalho Chehab u32 tmp = 0;
221b285192aSMauro Carvalho Chehab
222b285192aSMauro Carvalho Chehab /* enable output on the GPIO 0 for the MCLK ADC (Audio) */
223b285192aSMauro Carvalho Chehab cx25821_set_gpiopin_direction(chip->dev, 0, 0);
224b285192aSMauro Carvalho Chehab
225b285192aSMauro Carvalho Chehab /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
226b285192aSMauro Carvalho Chehab cx_clear(AUD_INT_DMA_CTL,
227b285192aSMauro Carvalho Chehab FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN);
228b285192aSMauro Carvalho Chehab
229b285192aSMauro Carvalho Chehab /* setup fifo + format - out channel */
230b285192aSMauro Carvalho Chehab cx25821_sram_channel_setup_audio(chip->dev, audio_ch, buf->bpl,
231b285192aSMauro Carvalho Chehab buf->risc.dma);
232b285192aSMauro Carvalho Chehab
233b285192aSMauro Carvalho Chehab /* sets bpl size */
234b285192aSMauro Carvalho Chehab cx_write(AUD_A_LNGTH, buf->bpl);
235b285192aSMauro Carvalho Chehab
236b285192aSMauro Carvalho Chehab /* reset counter */
237b285192aSMauro Carvalho Chehab /* GP_COUNT_CONTROL_RESET = 0x3 */
238b285192aSMauro Carvalho Chehab cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET);
239b285192aSMauro Carvalho Chehab atomic_set(&chip->count, 0);
240b285192aSMauro Carvalho Chehab
241b285192aSMauro Carvalho Chehab /* Set the input mode to 16-bit */
242b285192aSMauro Carvalho Chehab tmp = cx_read(AUD_A_CFG);
243b285192aSMauro Carvalho Chehab cx_write(AUD_A_CFG, tmp | FLD_AUD_DST_PK_MODE | FLD_AUD_DST_ENABLE |
244b285192aSMauro Carvalho Chehab FLD_AUD_CLK_ENABLE);
245b285192aSMauro Carvalho Chehab
246b285192aSMauro Carvalho Chehab /*
247b285192aSMauro Carvalho Chehab pr_info("DEBUG: Start audio DMA, %d B/line, cmds_start(0x%x)= %d lines/FIFO, %d periods, %d byte buffer\n",
248b285192aSMauro Carvalho Chehab buf->bpl, audio_ch->cmds_start,
249b285192aSMauro Carvalho Chehab cx_read(audio_ch->cmds_start + 12)>>1,
250b285192aSMauro Carvalho Chehab chip->num_periods, buf->bpl * chip->num_periods);
251b285192aSMauro Carvalho Chehab */
252b285192aSMauro Carvalho Chehab
253b285192aSMauro Carvalho Chehab /* Enables corresponding bits at AUD_INT_STAT */
254b285192aSMauro Carvalho Chehab cx_write(AUD_A_INT_MSK, FLD_AUD_DST_RISCI1 | FLD_AUD_DST_OF |
255b285192aSMauro Carvalho Chehab FLD_AUD_DST_SYNC | FLD_AUD_DST_OPC_ERR);
256b285192aSMauro Carvalho Chehab
257b285192aSMauro Carvalho Chehab /* Clean any pending interrupt bits already set */
258b285192aSMauro Carvalho Chehab cx_write(AUD_A_INT_STAT, ~0);
259b285192aSMauro Carvalho Chehab
260b285192aSMauro Carvalho Chehab /* enable audio irqs */
261b285192aSMauro Carvalho Chehab cx_set(PCI_INT_MSK, chip->dev->pci_irqmask | PCI_MSK_AUD_INT);
262b285192aSMauro Carvalho Chehab
263b285192aSMauro Carvalho Chehab /* Turn on audio downstream fifo and risc enable 0x101 */
264b285192aSMauro Carvalho Chehab tmp = cx_read(AUD_INT_DMA_CTL);
265b285192aSMauro Carvalho Chehab cx_set(AUD_INT_DMA_CTL, tmp |
266b285192aSMauro Carvalho Chehab (FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN));
267b285192aSMauro Carvalho Chehab
268b285192aSMauro Carvalho Chehab mdelay(100);
269b285192aSMauro Carvalho Chehab return 0;
270b285192aSMauro Carvalho Chehab }
271b285192aSMauro Carvalho Chehab
272b285192aSMauro Carvalho Chehab /*
273b285192aSMauro Carvalho Chehab * BOARD Specific: Resets audio DMA
274b285192aSMauro Carvalho Chehab */
_cx25821_stop_audio_dma(struct cx25821_audio_dev * chip)275b285192aSMauro Carvalho Chehab static int _cx25821_stop_audio_dma(struct cx25821_audio_dev *chip)
276b285192aSMauro Carvalho Chehab {
277b285192aSMauro Carvalho Chehab struct cx25821_dev *dev = chip->dev;
278b285192aSMauro Carvalho Chehab
279b285192aSMauro Carvalho Chehab /* stop dma */
280b285192aSMauro Carvalho Chehab cx_clear(AUD_INT_DMA_CTL,
281b285192aSMauro Carvalho Chehab FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN);
282b285192aSMauro Carvalho Chehab
283b285192aSMauro Carvalho Chehab /* disable irqs */
284b285192aSMauro Carvalho Chehab cx_clear(PCI_INT_MSK, PCI_MSK_AUD_INT);
285b285192aSMauro Carvalho Chehab cx_clear(AUD_A_INT_MSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
286b285192aSMauro Carvalho Chehab AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
287b285192aSMauro Carvalho Chehab
288b285192aSMauro Carvalho Chehab return 0;
289b285192aSMauro Carvalho Chehab }
290b285192aSMauro Carvalho Chehab
291b285192aSMauro Carvalho Chehab #define MAX_IRQ_LOOP 50
292b285192aSMauro Carvalho Chehab
293b285192aSMauro Carvalho Chehab /*
294b285192aSMauro Carvalho Chehab * BOARD Specific: IRQ dma bits
295b285192aSMauro Carvalho Chehab */
296b285192aSMauro Carvalho Chehab static char *cx25821_aud_irqs[32] = {
297b285192aSMauro Carvalho Chehab "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
298b285192aSMauro Carvalho Chehab NULL, /* reserved */
299b285192aSMauro Carvalho Chehab "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
300b285192aSMauro Carvalho Chehab NULL, /* reserved */
301b285192aSMauro Carvalho Chehab "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
302b285192aSMauro Carvalho Chehab NULL, /* reserved */
303b285192aSMauro Carvalho Chehab "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
304b285192aSMauro Carvalho Chehab NULL, /* reserved */
305b285192aSMauro Carvalho Chehab "opc_err", "par_err", "rip_err", /* 16-18 */
306b285192aSMauro Carvalho Chehab "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
307b285192aSMauro Carvalho Chehab };
308b285192aSMauro Carvalho Chehab
309b285192aSMauro Carvalho Chehab /*
310b285192aSMauro Carvalho Chehab * BOARD Specific: Threats IRQ audio specific calls
311b285192aSMauro Carvalho Chehab */
cx25821_aud_irq(struct cx25821_audio_dev * chip,u32 status,u32 mask)312b285192aSMauro Carvalho Chehab static void cx25821_aud_irq(struct cx25821_audio_dev *chip, u32 status,
313b285192aSMauro Carvalho Chehab u32 mask)
314b285192aSMauro Carvalho Chehab {
315b285192aSMauro Carvalho Chehab struct cx25821_dev *dev = chip->dev;
316b285192aSMauro Carvalho Chehab
317b285192aSMauro Carvalho Chehab if (0 == (status & mask))
318b285192aSMauro Carvalho Chehab return;
319b285192aSMauro Carvalho Chehab
320b285192aSMauro Carvalho Chehab cx_write(AUD_A_INT_STAT, status);
321b285192aSMauro Carvalho Chehab if (debug > 1 || (status & mask & ~0xff))
322b285192aSMauro Carvalho Chehab cx25821_print_irqbits(dev->name, "irq aud", cx25821_aud_irqs,
323b285192aSMauro Carvalho Chehab ARRAY_SIZE(cx25821_aud_irqs), status, mask);
324b285192aSMauro Carvalho Chehab
325b285192aSMauro Carvalho Chehab /* risc op code error */
326b285192aSMauro Carvalho Chehab if (status & AUD_INT_OPC_ERR) {
327b285192aSMauro Carvalho Chehab pr_warn("WARNING %s/1: Audio risc op code error\n", dev->name);
328b285192aSMauro Carvalho Chehab
329b285192aSMauro Carvalho Chehab cx_clear(AUD_INT_DMA_CTL,
330b285192aSMauro Carvalho Chehab FLD_AUD_DST_A_RISC_EN | FLD_AUD_DST_A_FIFO_EN);
331b285192aSMauro Carvalho Chehab cx25821_sram_channel_dump_audio(dev,
332b285192aSMauro Carvalho Chehab &cx25821_sram_channels[AUDIO_SRAM_CHANNEL]);
333b285192aSMauro Carvalho Chehab }
334b285192aSMauro Carvalho Chehab if (status & AUD_INT_DN_SYNC) {
335b285192aSMauro Carvalho Chehab pr_warn("WARNING %s: Downstream sync error!\n", dev->name);
336b285192aSMauro Carvalho Chehab cx_write(AUD_A_GPCNT_CTL, GP_COUNT_CONTROL_RESET);
337b285192aSMauro Carvalho Chehab return;
338b285192aSMauro Carvalho Chehab }
339b285192aSMauro Carvalho Chehab
340b285192aSMauro Carvalho Chehab /* risc1 downstream */
341b285192aSMauro Carvalho Chehab if (status & AUD_INT_DN_RISCI1) {
342b285192aSMauro Carvalho Chehab atomic_set(&chip->count, cx_read(AUD_A_GPCNT));
343b285192aSMauro Carvalho Chehab snd_pcm_period_elapsed(chip->substream);
344b285192aSMauro Carvalho Chehab }
345b285192aSMauro Carvalho Chehab }
346b285192aSMauro Carvalho Chehab
347b285192aSMauro Carvalho Chehab /*
348b285192aSMauro Carvalho Chehab * BOARD Specific: Handles IRQ calls
349b285192aSMauro Carvalho Chehab */
cx25821_irq(int irq,void * dev_id)350b285192aSMauro Carvalho Chehab static irqreturn_t cx25821_irq(int irq, void *dev_id)
351b285192aSMauro Carvalho Chehab {
352b285192aSMauro Carvalho Chehab struct cx25821_audio_dev *chip = dev_id;
353b285192aSMauro Carvalho Chehab struct cx25821_dev *dev = chip->dev;
354b285192aSMauro Carvalho Chehab u32 status, pci_status;
355b285192aSMauro Carvalho Chehab u32 audint_status, audint_mask;
356b285192aSMauro Carvalho Chehab int loop, handled = 0;
357b285192aSMauro Carvalho Chehab
358b285192aSMauro Carvalho Chehab audint_status = cx_read(AUD_A_INT_STAT);
359b285192aSMauro Carvalho Chehab audint_mask = cx_read(AUD_A_INT_MSK);
360b285192aSMauro Carvalho Chehab status = cx_read(PCI_INT_STAT);
361b285192aSMauro Carvalho Chehab
362b285192aSMauro Carvalho Chehab for (loop = 0; loop < 1; loop++) {
363b285192aSMauro Carvalho Chehab status = cx_read(PCI_INT_STAT);
364b285192aSMauro Carvalho Chehab if (0 == status) {
365b285192aSMauro Carvalho Chehab status = cx_read(PCI_INT_STAT);
366b285192aSMauro Carvalho Chehab audint_status = cx_read(AUD_A_INT_STAT);
367b285192aSMauro Carvalho Chehab audint_mask = cx_read(AUD_A_INT_MSK);
368b285192aSMauro Carvalho Chehab
369b285192aSMauro Carvalho Chehab if (status) {
370b285192aSMauro Carvalho Chehab handled = 1;
371b285192aSMauro Carvalho Chehab cx_write(PCI_INT_STAT, status);
372b285192aSMauro Carvalho Chehab
373b285192aSMauro Carvalho Chehab cx25821_aud_irq(chip, audint_status,
374b285192aSMauro Carvalho Chehab audint_mask);
375b285192aSMauro Carvalho Chehab break;
376b285192aSMauro Carvalho Chehab } else {
377b285192aSMauro Carvalho Chehab goto out;
378b285192aSMauro Carvalho Chehab }
379b285192aSMauro Carvalho Chehab }
380b285192aSMauro Carvalho Chehab
381b285192aSMauro Carvalho Chehab handled = 1;
382b285192aSMauro Carvalho Chehab cx_write(PCI_INT_STAT, status);
383b285192aSMauro Carvalho Chehab
384b285192aSMauro Carvalho Chehab cx25821_aud_irq(chip, audint_status, audint_mask);
385b285192aSMauro Carvalho Chehab }
386b285192aSMauro Carvalho Chehab
387b285192aSMauro Carvalho Chehab pci_status = cx_read(PCI_INT_STAT);
388b285192aSMauro Carvalho Chehab
389b285192aSMauro Carvalho Chehab if (handled)
390b285192aSMauro Carvalho Chehab cx_write(PCI_INT_STAT, pci_status);
391b285192aSMauro Carvalho Chehab
392b285192aSMauro Carvalho Chehab out:
393b285192aSMauro Carvalho Chehab return IRQ_RETVAL(handled);
394b285192aSMauro Carvalho Chehab }
395b285192aSMauro Carvalho Chehab
dsp_buffer_free(struct cx25821_audio_dev * chip)396b285192aSMauro Carvalho Chehab static int dsp_buffer_free(struct cx25821_audio_dev *chip)
397b285192aSMauro Carvalho Chehab {
3985ede94c7SHans Verkuil struct cx25821_riscmem *risc = &chip->buf->risc;
3995ede94c7SHans Verkuil
400b285192aSMauro Carvalho Chehab BUG_ON(!chip->dma_size);
401b285192aSMauro Carvalho Chehab
402b285192aSMauro Carvalho Chehab dprintk(2, "Freeing buffer\n");
4038d8e6d60SHans Verkuil cx25821_alsa_dma_unmap(chip);
4048d8e6d60SHans Verkuil cx25821_alsa_dma_free(chip->buf);
405bb5d4180SChristophe JAILLET dma_free_coherent(&chip->pci->dev, risc->size, risc->cpu, risc->dma);
406b285192aSMauro Carvalho Chehab kfree(chip->buf);
407b285192aSMauro Carvalho Chehab
4088d8e6d60SHans Verkuil chip->buf = NULL;
409b285192aSMauro Carvalho Chehab chip->dma_size = 0;
410b285192aSMauro Carvalho Chehab
411b285192aSMauro Carvalho Chehab return 0;
412b285192aSMauro Carvalho Chehab }
413b285192aSMauro Carvalho Chehab
414b285192aSMauro Carvalho Chehab /****************************************************************************
415b285192aSMauro Carvalho Chehab ALSA PCM Interface
416b285192aSMauro Carvalho Chehab ****************************************************************************/
417b285192aSMauro Carvalho Chehab
418b285192aSMauro Carvalho Chehab /*
419b285192aSMauro Carvalho Chehab * Digital hardware definition
420b285192aSMauro Carvalho Chehab */
421b285192aSMauro Carvalho Chehab #define DEFAULT_FIFO_SIZE 384
42247f14314SBhumika Goyal static const struct snd_pcm_hardware snd_cx25821_digital_hw = {
423b285192aSMauro Carvalho Chehab .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
424b285192aSMauro Carvalho Chehab SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID,
425b285192aSMauro Carvalho Chehab .formats = SNDRV_PCM_FMTBIT_S16_LE,
426b285192aSMauro Carvalho Chehab
427b285192aSMauro Carvalho Chehab .rates = SNDRV_PCM_RATE_48000,
428b285192aSMauro Carvalho Chehab .rate_min = 48000,
429b285192aSMauro Carvalho Chehab .rate_max = 48000,
430b285192aSMauro Carvalho Chehab .channels_min = 2,
431b285192aSMauro Carvalho Chehab .channels_max = 2,
432b285192aSMauro Carvalho Chehab /* Analog audio output will be full of clicks and pops if there
433b285192aSMauro Carvalho Chehab are not exactly four lines in the SRAM FIFO buffer. */
434b285192aSMauro Carvalho Chehab .period_bytes_min = DEFAULT_FIFO_SIZE / 3,
435b285192aSMauro Carvalho Chehab .period_bytes_max = DEFAULT_FIFO_SIZE / 3,
436b285192aSMauro Carvalho Chehab .periods_min = 1,
437b285192aSMauro Carvalho Chehab .periods_max = AUDIO_LINE_SIZE,
438b285192aSMauro Carvalho Chehab /* 128 * 128 = 16384 = 1024 * 16 */
439b285192aSMauro Carvalho Chehab .buffer_bytes_max = (AUDIO_LINE_SIZE * AUDIO_LINE_SIZE),
440b285192aSMauro Carvalho Chehab };
441b285192aSMauro Carvalho Chehab
442b285192aSMauro Carvalho Chehab /*
443b285192aSMauro Carvalho Chehab * audio pcm capture open callback
444b285192aSMauro Carvalho Chehab */
snd_cx25821_pcm_open(struct snd_pcm_substream * substream)445b285192aSMauro Carvalho Chehab static int snd_cx25821_pcm_open(struct snd_pcm_substream *substream)
446b285192aSMauro Carvalho Chehab {
447b285192aSMauro Carvalho Chehab struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);
448b285192aSMauro Carvalho Chehab struct snd_pcm_runtime *runtime = substream->runtime;
449b285192aSMauro Carvalho Chehab int err;
450b285192aSMauro Carvalho Chehab unsigned int bpl = 0;
451b285192aSMauro Carvalho Chehab
452b285192aSMauro Carvalho Chehab if (!chip) {
453b285192aSMauro Carvalho Chehab pr_err("DEBUG: cx25821 can't find device struct. Can't proceed with open\n");
454b285192aSMauro Carvalho Chehab return -ENODEV;
455b285192aSMauro Carvalho Chehab }
456b285192aSMauro Carvalho Chehab
457b285192aSMauro Carvalho Chehab err = snd_pcm_hw_constraint_pow2(runtime, 0,
458b285192aSMauro Carvalho Chehab SNDRV_PCM_HW_PARAM_PERIODS);
459b285192aSMauro Carvalho Chehab if (err < 0)
460b285192aSMauro Carvalho Chehab goto _error;
461b285192aSMauro Carvalho Chehab
462b285192aSMauro Carvalho Chehab chip->substream = substream;
463b285192aSMauro Carvalho Chehab
464b285192aSMauro Carvalho Chehab runtime->hw = snd_cx25821_digital_hw;
465b285192aSMauro Carvalho Chehab
466b285192aSMauro Carvalho Chehab if (cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size !=
467b285192aSMauro Carvalho Chehab DEFAULT_FIFO_SIZE) {
468b285192aSMauro Carvalho Chehab /* since there are 3 audio Clusters */
469b285192aSMauro Carvalho Chehab bpl = cx25821_sram_channels[AUDIO_SRAM_CHANNEL].fifo_size / 3;
470b285192aSMauro Carvalho Chehab bpl &= ~7; /* must be multiple of 8 */
471b285192aSMauro Carvalho Chehab
472b285192aSMauro Carvalho Chehab if (bpl > AUDIO_LINE_SIZE)
473b285192aSMauro Carvalho Chehab bpl = AUDIO_LINE_SIZE;
474b285192aSMauro Carvalho Chehab
475b285192aSMauro Carvalho Chehab runtime->hw.period_bytes_min = bpl;
476b285192aSMauro Carvalho Chehab runtime->hw.period_bytes_max = bpl;
477b285192aSMauro Carvalho Chehab }
478b285192aSMauro Carvalho Chehab
479b285192aSMauro Carvalho Chehab return 0;
480b285192aSMauro Carvalho Chehab _error:
481b285192aSMauro Carvalho Chehab dprintk(1, "Error opening PCM!\n");
482b285192aSMauro Carvalho Chehab return err;
483b285192aSMauro Carvalho Chehab }
484b285192aSMauro Carvalho Chehab
485b285192aSMauro Carvalho Chehab /*
486b285192aSMauro Carvalho Chehab * audio close callback
487b285192aSMauro Carvalho Chehab */
snd_cx25821_close(struct snd_pcm_substream * substream)488b285192aSMauro Carvalho Chehab static int snd_cx25821_close(struct snd_pcm_substream *substream)
489b285192aSMauro Carvalho Chehab {
490b285192aSMauro Carvalho Chehab return 0;
491b285192aSMauro Carvalho Chehab }
492b285192aSMauro Carvalho Chehab
493b285192aSMauro Carvalho Chehab /*
494b285192aSMauro Carvalho Chehab * hw_params callback
495b285192aSMauro Carvalho Chehab */
snd_cx25821_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)496b285192aSMauro Carvalho Chehab static int snd_cx25821_hw_params(struct snd_pcm_substream *substream,
497b285192aSMauro Carvalho Chehab struct snd_pcm_hw_params *hw_params)
498b285192aSMauro Carvalho Chehab {
499b285192aSMauro Carvalho Chehab struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);
500b285192aSMauro Carvalho Chehab struct cx25821_audio_buffer *buf;
501b285192aSMauro Carvalho Chehab int ret;
502b285192aSMauro Carvalho Chehab
503b285192aSMauro Carvalho Chehab if (substream->runtime->dma_area) {
504b285192aSMauro Carvalho Chehab dsp_buffer_free(chip);
505b285192aSMauro Carvalho Chehab substream->runtime->dma_area = NULL;
506b285192aSMauro Carvalho Chehab }
507b285192aSMauro Carvalho Chehab
508b285192aSMauro Carvalho Chehab chip->period_size = params_period_bytes(hw_params);
509b285192aSMauro Carvalho Chehab chip->num_periods = params_periods(hw_params);
510b285192aSMauro Carvalho Chehab chip->dma_size = chip->period_size * params_periods(hw_params);
511b285192aSMauro Carvalho Chehab
512b285192aSMauro Carvalho Chehab BUG_ON(!chip->dma_size);
513b285192aSMauro Carvalho Chehab BUG_ON(chip->num_periods & (chip->num_periods - 1));
514b285192aSMauro Carvalho Chehab
515b285192aSMauro Carvalho Chehab buf = kzalloc(sizeof(*buf), GFP_KERNEL);
516b285192aSMauro Carvalho Chehab if (NULL == buf)
517b285192aSMauro Carvalho Chehab return -ENOMEM;
518b285192aSMauro Carvalho Chehab
519b285192aSMauro Carvalho Chehab if (chip->period_size > AUDIO_LINE_SIZE)
520b285192aSMauro Carvalho Chehab chip->period_size = AUDIO_LINE_SIZE;
521b285192aSMauro Carvalho Chehab
522b285192aSMauro Carvalho Chehab buf->bpl = chip->period_size;
5238d8e6d60SHans Verkuil chip->buf = buf;
524b285192aSMauro Carvalho Chehab
5258d8e6d60SHans Verkuil ret = cx25821_alsa_dma_init(chip,
526b285192aSMauro Carvalho Chehab (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
527b285192aSMauro Carvalho Chehab if (ret < 0)
528b285192aSMauro Carvalho Chehab goto error;
529b285192aSMauro Carvalho Chehab
5308d8e6d60SHans Verkuil ret = cx25821_alsa_dma_map(chip);
531b285192aSMauro Carvalho Chehab if (ret < 0)
532b285192aSMauro Carvalho Chehab goto error;
533b285192aSMauro Carvalho Chehab
5348d8e6d60SHans Verkuil ret = cx25821_risc_databuffer_audio(chip->pci, &buf->risc, buf->sglist,
535b285192aSMauro Carvalho Chehab chip->period_size, chip->num_periods, 1);
536b285192aSMauro Carvalho Chehab if (ret < 0) {
537b285192aSMauro Carvalho Chehab pr_info("DEBUG: ERROR after cx25821_risc_databuffer_audio()\n");
538b285192aSMauro Carvalho Chehab goto error;
539b285192aSMauro Carvalho Chehab }
540b285192aSMauro Carvalho Chehab
541b285192aSMauro Carvalho Chehab /* Loop back to start of program */
542b285192aSMauro Carvalho Chehab buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
543b285192aSMauro Carvalho Chehab buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
544b285192aSMauro Carvalho Chehab buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
545b285192aSMauro Carvalho Chehab
5468d8e6d60SHans Verkuil substream->runtime->dma_area = chip->buf->vaddr;
547b285192aSMauro Carvalho Chehab substream->runtime->dma_bytes = chip->dma_size;
548b285192aSMauro Carvalho Chehab substream->runtime->dma_addr = 0;
549b285192aSMauro Carvalho Chehab
550b285192aSMauro Carvalho Chehab return 0;
551b285192aSMauro Carvalho Chehab
552b285192aSMauro Carvalho Chehab error:
5538d8e6d60SHans Verkuil chip->buf = NULL;
554b285192aSMauro Carvalho Chehab kfree(buf);
555b285192aSMauro Carvalho Chehab return ret;
556b285192aSMauro Carvalho Chehab }
557b285192aSMauro Carvalho Chehab
558b285192aSMauro Carvalho Chehab /*
559b285192aSMauro Carvalho Chehab * hw free callback
560b285192aSMauro Carvalho Chehab */
snd_cx25821_hw_free(struct snd_pcm_substream * substream)561b285192aSMauro Carvalho Chehab static int snd_cx25821_hw_free(struct snd_pcm_substream *substream)
562b285192aSMauro Carvalho Chehab {
563b285192aSMauro Carvalho Chehab struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);
564b285192aSMauro Carvalho Chehab
565b285192aSMauro Carvalho Chehab if (substream->runtime->dma_area) {
566b285192aSMauro Carvalho Chehab dsp_buffer_free(chip);
567b285192aSMauro Carvalho Chehab substream->runtime->dma_area = NULL;
568b285192aSMauro Carvalho Chehab }
569b285192aSMauro Carvalho Chehab
570b285192aSMauro Carvalho Chehab return 0;
571b285192aSMauro Carvalho Chehab }
572b285192aSMauro Carvalho Chehab
573b285192aSMauro Carvalho Chehab /*
574b285192aSMauro Carvalho Chehab * prepare callback
575b285192aSMauro Carvalho Chehab */
snd_cx25821_prepare(struct snd_pcm_substream * substream)576b285192aSMauro Carvalho Chehab static int snd_cx25821_prepare(struct snd_pcm_substream *substream)
577b285192aSMauro Carvalho Chehab {
578b285192aSMauro Carvalho Chehab return 0;
579b285192aSMauro Carvalho Chehab }
580b285192aSMauro Carvalho Chehab
581b285192aSMauro Carvalho Chehab /*
582b285192aSMauro Carvalho Chehab * trigger callback
583b285192aSMauro Carvalho Chehab */
snd_cx25821_card_trigger(struct snd_pcm_substream * substream,int cmd)584b285192aSMauro Carvalho Chehab static int snd_cx25821_card_trigger(struct snd_pcm_substream *substream,
585b285192aSMauro Carvalho Chehab int cmd)
586b285192aSMauro Carvalho Chehab {
587b285192aSMauro Carvalho Chehab struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);
588b285192aSMauro Carvalho Chehab int err = 0;
589b285192aSMauro Carvalho Chehab
590b285192aSMauro Carvalho Chehab /* Local interrupts are already disabled by ALSA */
591b285192aSMauro Carvalho Chehab spin_lock(&chip->reg_lock);
592b285192aSMauro Carvalho Chehab
593b285192aSMauro Carvalho Chehab switch (cmd) {
594b285192aSMauro Carvalho Chehab case SNDRV_PCM_TRIGGER_START:
595b285192aSMauro Carvalho Chehab err = _cx25821_start_audio_dma(chip);
596b285192aSMauro Carvalho Chehab break;
597b285192aSMauro Carvalho Chehab case SNDRV_PCM_TRIGGER_STOP:
598b285192aSMauro Carvalho Chehab err = _cx25821_stop_audio_dma(chip);
599b285192aSMauro Carvalho Chehab break;
600b285192aSMauro Carvalho Chehab default:
601b285192aSMauro Carvalho Chehab err = -EINVAL;
602b285192aSMauro Carvalho Chehab break;
603b285192aSMauro Carvalho Chehab }
604b285192aSMauro Carvalho Chehab
605b285192aSMauro Carvalho Chehab spin_unlock(&chip->reg_lock);
606b285192aSMauro Carvalho Chehab
607b285192aSMauro Carvalho Chehab return err;
608b285192aSMauro Carvalho Chehab }
609b285192aSMauro Carvalho Chehab
610b285192aSMauro Carvalho Chehab /*
611b285192aSMauro Carvalho Chehab * pointer callback
612b285192aSMauro Carvalho Chehab */
snd_cx25821_pointer(struct snd_pcm_substream * substream)613b285192aSMauro Carvalho Chehab static snd_pcm_uframes_t snd_cx25821_pointer(struct snd_pcm_substream
614b285192aSMauro Carvalho Chehab *substream)
615b285192aSMauro Carvalho Chehab {
616b285192aSMauro Carvalho Chehab struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);
617b285192aSMauro Carvalho Chehab struct snd_pcm_runtime *runtime = substream->runtime;
618b285192aSMauro Carvalho Chehab u16 count;
619b285192aSMauro Carvalho Chehab
620b285192aSMauro Carvalho Chehab count = atomic_read(&chip->count);
621b285192aSMauro Carvalho Chehab
622b285192aSMauro Carvalho Chehab return runtime->period_size * (count & (runtime->periods - 1));
623b285192aSMauro Carvalho Chehab }
624b285192aSMauro Carvalho Chehab
625b285192aSMauro Carvalho Chehab /*
626b285192aSMauro Carvalho Chehab * page callback (needed for mmap)
627b285192aSMauro Carvalho Chehab */
snd_cx25821_page(struct snd_pcm_substream * substream,unsigned long offset)628b285192aSMauro Carvalho Chehab static struct page *snd_cx25821_page(struct snd_pcm_substream *substream,
629b285192aSMauro Carvalho Chehab unsigned long offset)
630b285192aSMauro Carvalho Chehab {
631b285192aSMauro Carvalho Chehab void *pageptr = substream->runtime->dma_area + offset;
632b285192aSMauro Carvalho Chehab
633b285192aSMauro Carvalho Chehab return vmalloc_to_page(pageptr);
634b285192aSMauro Carvalho Chehab }
635b285192aSMauro Carvalho Chehab
636b285192aSMauro Carvalho Chehab /*
637b285192aSMauro Carvalho Chehab * operators
638b285192aSMauro Carvalho Chehab */
6395c8d8c01SJulia Lawall static const struct snd_pcm_ops snd_cx25821_pcm_ops = {
640b285192aSMauro Carvalho Chehab .open = snd_cx25821_pcm_open,
641b285192aSMauro Carvalho Chehab .close = snd_cx25821_close,
642b285192aSMauro Carvalho Chehab .hw_params = snd_cx25821_hw_params,
643b285192aSMauro Carvalho Chehab .hw_free = snd_cx25821_hw_free,
644b285192aSMauro Carvalho Chehab .prepare = snd_cx25821_prepare,
645b285192aSMauro Carvalho Chehab .trigger = snd_cx25821_card_trigger,
646b285192aSMauro Carvalho Chehab .pointer = snd_cx25821_pointer,
647b285192aSMauro Carvalho Chehab .page = snd_cx25821_page,
648b285192aSMauro Carvalho Chehab };
649b285192aSMauro Carvalho Chehab
650b285192aSMauro Carvalho Chehab /*
651b285192aSMauro Carvalho Chehab * ALSA create a PCM device: Called when initializing the board.
652b285192aSMauro Carvalho Chehab * Sets up the name and hooks up the callbacks
653b285192aSMauro Carvalho Chehab */
snd_cx25821_pcm(struct cx25821_audio_dev * chip,int device,char * name)654b285192aSMauro Carvalho Chehab static int snd_cx25821_pcm(struct cx25821_audio_dev *chip, int device,
655b285192aSMauro Carvalho Chehab char *name)
656b285192aSMauro Carvalho Chehab {
657b285192aSMauro Carvalho Chehab struct snd_pcm *pcm;
658b285192aSMauro Carvalho Chehab int err;
659b285192aSMauro Carvalho Chehab
660b285192aSMauro Carvalho Chehab err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
661b285192aSMauro Carvalho Chehab if (err < 0) {
662b285192aSMauro Carvalho Chehab pr_info("ERROR: FAILED snd_pcm_new() in %s\n", __func__);
663b285192aSMauro Carvalho Chehab return err;
664b285192aSMauro Carvalho Chehab }
665b285192aSMauro Carvalho Chehab pcm->private_data = chip;
666b285192aSMauro Carvalho Chehab pcm->info_flags = 0;
667cc1e6315SMauro Carvalho Chehab strscpy(pcm->name, name, sizeof(pcm->name));
668b285192aSMauro Carvalho Chehab snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx25821_pcm_ops);
669b285192aSMauro Carvalho Chehab
670b285192aSMauro Carvalho Chehab return 0;
671b285192aSMauro Carvalho Chehab }
672b285192aSMauro Carvalho Chehab
673b285192aSMauro Carvalho Chehab /****************************************************************************
674b285192aSMauro Carvalho Chehab Basic Flow for Sound Devices
675b285192aSMauro Carvalho Chehab ****************************************************************************/
676b285192aSMauro Carvalho Chehab
677b285192aSMauro Carvalho Chehab /*
678b285192aSMauro Carvalho Chehab * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
679b285192aSMauro Carvalho Chehab * Only boards with eeprom and byte 1 at eeprom=1 have it
680b285192aSMauro Carvalho Chehab */
681b285192aSMauro Carvalho Chehab
682114e877aSMauro Carvalho Chehab static const struct pci_device_id __maybe_unused cx25821_audio_pci_tbl[] = {
683b285192aSMauro Carvalho Chehab {0x14f1, 0x0920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
684b285192aSMauro Carvalho Chehab {0,}
685b285192aSMauro Carvalho Chehab };
686b285192aSMauro Carvalho Chehab
687b285192aSMauro Carvalho Chehab MODULE_DEVICE_TABLE(pci, cx25821_audio_pci_tbl);
688b285192aSMauro Carvalho Chehab
689b285192aSMauro Carvalho Chehab /*
690b285192aSMauro Carvalho Chehab * Alsa Constructor - Component probe
691b285192aSMauro Carvalho Chehab */
cx25821_audio_initdev(struct cx25821_dev * dev)692b285192aSMauro Carvalho Chehab static int cx25821_audio_initdev(struct cx25821_dev *dev)
693b285192aSMauro Carvalho Chehab {
694b285192aSMauro Carvalho Chehab struct snd_card *card;
695b285192aSMauro Carvalho Chehab struct cx25821_audio_dev *chip;
696b285192aSMauro Carvalho Chehab int err;
697b285192aSMauro Carvalho Chehab
698b285192aSMauro Carvalho Chehab if (devno >= SNDRV_CARDS) {
699b285192aSMauro Carvalho Chehab pr_info("DEBUG ERROR: devno >= SNDRV_CARDS %s\n", __func__);
700b285192aSMauro Carvalho Chehab return -ENODEV;
701b285192aSMauro Carvalho Chehab }
702b285192aSMauro Carvalho Chehab
703b285192aSMauro Carvalho Chehab if (!enable[devno]) {
704b285192aSMauro Carvalho Chehab ++devno;
705b285192aSMauro Carvalho Chehab pr_info("DEBUG ERROR: !enable[devno] %s\n", __func__);
706b285192aSMauro Carvalho Chehab return -ENOENT;
707b285192aSMauro Carvalho Chehab }
708b285192aSMauro Carvalho Chehab
709e7356888STakashi Iwai err = snd_card_new(&dev->pci->dev, index[devno], id[devno],
710e7356888STakashi Iwai THIS_MODULE,
711b285192aSMauro Carvalho Chehab sizeof(struct cx25821_audio_dev), &card);
712b285192aSMauro Carvalho Chehab if (err < 0) {
713b285192aSMauro Carvalho Chehab pr_info("DEBUG ERROR: cannot create snd_card_new in %s\n",
714b285192aSMauro Carvalho Chehab __func__);
715b285192aSMauro Carvalho Chehab return err;
716b285192aSMauro Carvalho Chehab }
717b285192aSMauro Carvalho Chehab
718cc1e6315SMauro Carvalho Chehab strscpy(card->driver, "cx25821", sizeof(card->driver));
719b285192aSMauro Carvalho Chehab
720b285192aSMauro Carvalho Chehab /* Card "creation" */
721b285192aSMauro Carvalho Chehab chip = card->private_data;
722b285192aSMauro Carvalho Chehab spin_lock_init(&chip->reg_lock);
723b285192aSMauro Carvalho Chehab
724b285192aSMauro Carvalho Chehab chip->dev = dev;
725b285192aSMauro Carvalho Chehab chip->card = card;
726b285192aSMauro Carvalho Chehab chip->pci = dev->pci;
727b285192aSMauro Carvalho Chehab chip->iobase = pci_resource_start(dev->pci, 0);
728b285192aSMauro Carvalho Chehab
729b285192aSMauro Carvalho Chehab chip->irq = dev->pci->irq;
730b285192aSMauro Carvalho Chehab
731*6ba65e68SHans Verkuil err = devm_request_irq(&dev->pci->dev, dev->pci->irq, cx25821_irq,
732b285192aSMauro Carvalho Chehab IRQF_SHARED, chip->dev->name, chip);
733b285192aSMauro Carvalho Chehab
734b285192aSMauro Carvalho Chehab if (err < 0) {
735b285192aSMauro Carvalho Chehab pr_err("ERROR %s: can't get IRQ %d for ALSA\n", chip->dev->name,
736b285192aSMauro Carvalho Chehab dev->pci->irq);
737b285192aSMauro Carvalho Chehab goto error;
738b285192aSMauro Carvalho Chehab }
739b285192aSMauro Carvalho Chehab
740b285192aSMauro Carvalho Chehab err = snd_cx25821_pcm(chip, 0, "cx25821 Digital");
741b285192aSMauro Carvalho Chehab if (err < 0) {
742b285192aSMauro Carvalho Chehab pr_info("DEBUG ERROR: cannot create snd_cx25821_pcm %s\n",
743b285192aSMauro Carvalho Chehab __func__);
744b285192aSMauro Carvalho Chehab goto error;
745b285192aSMauro Carvalho Chehab }
746b285192aSMauro Carvalho Chehab
747cc1e6315SMauro Carvalho Chehab strscpy(card->shortname, "cx25821", sizeof(card->shortname));
748b285192aSMauro Carvalho Chehab sprintf(card->longname, "%s at 0x%lx irq %d", chip->dev->name,
749b285192aSMauro Carvalho Chehab chip->iobase, chip->irq);
750cc1e6315SMauro Carvalho Chehab strscpy(card->mixername, "CX25821", sizeof(card->mixername));
751b285192aSMauro Carvalho Chehab
752b285192aSMauro Carvalho Chehab pr_info("%s/%i: ALSA support for cx25821 boards\n", card->driver,
753b285192aSMauro Carvalho Chehab devno);
754b285192aSMauro Carvalho Chehab
755b285192aSMauro Carvalho Chehab err = snd_card_register(card);
756b285192aSMauro Carvalho Chehab if (err < 0) {
757b285192aSMauro Carvalho Chehab pr_info("DEBUG ERROR: cannot register sound card %s\n",
758b285192aSMauro Carvalho Chehab __func__);
759b285192aSMauro Carvalho Chehab goto error;
760b285192aSMauro Carvalho Chehab }
761b285192aSMauro Carvalho Chehab
762a8f35ce3SHans Verkuil dev->card = card;
763b285192aSMauro Carvalho Chehab devno++;
764b285192aSMauro Carvalho Chehab return 0;
765b285192aSMauro Carvalho Chehab
766b285192aSMauro Carvalho Chehab error:
767b285192aSMauro Carvalho Chehab snd_card_free(card);
768b285192aSMauro Carvalho Chehab return err;
769b285192aSMauro Carvalho Chehab }
770b285192aSMauro Carvalho Chehab
771b285192aSMauro Carvalho Chehab /****************************************************************************
772b285192aSMauro Carvalho Chehab LINUX MODULE INIT
773b285192aSMauro Carvalho Chehab ****************************************************************************/
774a8f35ce3SHans Verkuil
cx25821_alsa_exit_callback(struct device * dev,void * data)775a8f35ce3SHans Verkuil static int cx25821_alsa_exit_callback(struct device *dev, void *data)
776a8f35ce3SHans Verkuil {
777a8f35ce3SHans Verkuil struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
778a8f35ce3SHans Verkuil struct cx25821_dev *cxdev = get_cx25821(v4l2_dev);
779a8f35ce3SHans Verkuil
780a8f35ce3SHans Verkuil snd_card_free(cxdev->card);
781a8f35ce3SHans Verkuil return 0;
782a8f35ce3SHans Verkuil }
783a8f35ce3SHans Verkuil
cx25821_audio_fini(void)784b285192aSMauro Carvalho Chehab static void cx25821_audio_fini(void)
785b285192aSMauro Carvalho Chehab {
786a8f35ce3SHans Verkuil struct device_driver *drv = driver_find("cx25821", &pci_bus_type);
787a8f35ce3SHans Verkuil int ret;
788a8f35ce3SHans Verkuil
789a8f35ce3SHans Verkuil ret = driver_for_each_device(drv, NULL, NULL, cx25821_alsa_exit_callback);
790f327cabfSMauro Carvalho Chehab if (ret)
791f327cabfSMauro Carvalho Chehab pr_err("%s failed to find a cx25821 driver.\n", __func__);
792a8f35ce3SHans Verkuil }
793a8f35ce3SHans Verkuil
cx25821_alsa_init_callback(struct device * dev,void * data)794a8f35ce3SHans Verkuil static int cx25821_alsa_init_callback(struct device *dev, void *data)
795a8f35ce3SHans Verkuil {
796a8f35ce3SHans Verkuil struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
797a8f35ce3SHans Verkuil struct cx25821_dev *cxdev = get_cx25821(v4l2_dev);
798a8f35ce3SHans Verkuil
799a8f35ce3SHans Verkuil cx25821_audio_initdev(cxdev);
800a8f35ce3SHans Verkuil return 0;
801b285192aSMauro Carvalho Chehab }
802b285192aSMauro Carvalho Chehab
803b285192aSMauro Carvalho Chehab /*
804b285192aSMauro Carvalho Chehab * Module initializer
805b285192aSMauro Carvalho Chehab *
806b285192aSMauro Carvalho Chehab * Loops through present saa7134 cards, and assigns an ALSA device
807b285192aSMauro Carvalho Chehab * to each one
808b285192aSMauro Carvalho Chehab *
809b285192aSMauro Carvalho Chehab */
cx25821_alsa_init(void)810b285192aSMauro Carvalho Chehab static int cx25821_alsa_init(void)
811b285192aSMauro Carvalho Chehab {
812a8f35ce3SHans Verkuil struct device_driver *drv = driver_find("cx25821", &pci_bus_type);
813b285192aSMauro Carvalho Chehab
814a8f35ce3SHans Verkuil return driver_for_each_device(drv, NULL, NULL, cx25821_alsa_init_callback);
815b285192aSMauro Carvalho Chehab
816b285192aSMauro Carvalho Chehab }
817b285192aSMauro Carvalho Chehab
818b285192aSMauro Carvalho Chehab late_initcall(cx25821_alsa_init);
819b285192aSMauro Carvalho Chehab module_exit(cx25821_audio_fini);
820