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Release 4.7 sound/pci/via82xx_modem.c

Directory: sound/pci
/*
 *   ALSA modem driver for VIA VT82xx (South Bridge)
 *
 *   VT82C686A/B/C, VT8233A/C, VT8235
 *
 *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
 *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
 *                    2002 Takashi Iwai <tiwai@suse.de>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

/*
 * Changes:
 *
 * Sep. 2,  2004  Sasha Khapyorsky <sashak@alsa-project.org>
 *      Modified from original audio driver 'via82xx.c' to support AC97
 *      modems.
 */

#include <linux/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/info.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>

#if 0
#define POINTER_DEBUG
#endif

MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("VIA VT82xx modem");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");


static int index = -2; 
/* Exclude the first card */

static char *id = SNDRV_DEFAULT_STR1;	
/* ID for this card */

static int ac97_clock = 48000;

module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
module_param(ac97_clock, int, 0444);
MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");

/* just for backward compatibility */

static bool enable;
module_param(enable, bool, 0444);


/*
 *  Direct registers
 */


#define VIAREG(via, x) ((via)->port + VIA_REG_##x)

#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)

/* common offsets */

#define VIA_REG_OFFSET_STATUS		0x00	
/* byte - channel status */

#define   VIA_REG_STAT_ACTIVE		0x80	
/* RO */

#define   VIA_REG_STAT_PAUSED		0x40	
/* RO */

#define   VIA_REG_STAT_TRIGGER_QUEUED	0x08	
/* RO */

#define   VIA_REG_STAT_STOPPED		0x04	
/* RWC */

#define   VIA_REG_STAT_EOL		0x02	
/* RWC */

#define   VIA_REG_STAT_FLAG		0x01	
/* RWC */

#define VIA_REG_OFFSET_CONTROL		0x01	
/* byte - channel control */

#define   VIA_REG_CTRL_START		0x80	
/* WO */

#define   VIA_REG_CTRL_TERMINATE	0x40	
/* WO */

#define   VIA_REG_CTRL_AUTOSTART	0x20

#define   VIA_REG_CTRL_PAUSE		0x08	
/* RW */

#define   VIA_REG_CTRL_INT_STOP		0x04		

#define   VIA_REG_CTRL_INT_EOL		0x02

#define   VIA_REG_CTRL_INT_FLAG		0x01

#define   VIA_REG_CTRL_RESET		0x01	
/* RW - probably reset? undocumented */

#define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)

#define VIA_REG_OFFSET_TYPE		0x02	
/* byte - channel type (686 only) */

#define   VIA_REG_TYPE_AUTOSTART	0x80	
/* RW - autostart at EOL */

#define   VIA_REG_TYPE_16BIT		0x20	
/* RW */

#define   VIA_REG_TYPE_STEREO		0x10	
/* RW */

#define   VIA_REG_TYPE_INT_LLINE	0x00

#define   VIA_REG_TYPE_INT_LSAMPLE	0x04

#define   VIA_REG_TYPE_INT_LESSONE	0x08

#define   VIA_REG_TYPE_INT_MASK		0x0c

#define   VIA_REG_TYPE_INT_EOL		0x02

#define   VIA_REG_TYPE_INT_FLAG		0x01

#define VIA_REG_OFFSET_TABLE_PTR	0x04	
/* dword - channel table pointer */

#define VIA_REG_OFFSET_CURR_PTR		0x04	
/* dword - channel current pointer */

#define VIA_REG_OFFSET_STOP_IDX		0x08	
/* dword - stop index, channel type, sample rate */

#define VIA_REG_OFFSET_CURR_COUNT	0x0c	
/* dword - channel current count (24 bit) */

#define VIA_REG_OFFSET_CURR_INDEX	0x0f	
/* byte - channel current index (for via8233 only) */


#define DEFINE_VIA_REGSET(name,val) \
enum {\
        VIA_REG_##name##_STATUS         = (val),\
        VIA_REG_##name##_CONTROL        = (val) + 0x01,\
        VIA_REG_##name##_TYPE           = (val) + 0x02,\
        VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
        VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
        VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
        VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
}

/* modem block */
DEFINE_VIA_REGSET(MO, 0x40);
DEFINE_VIA_REGSET(MI, 0x50);

/* AC'97 */

#define VIA_REG_AC97			0x80	
/* dword */

#define   VIA_REG_AC97_CODEC_ID_MASK	(3<<30)

#define   VIA_REG_AC97_CODEC_ID_SHIFT	30

#define   VIA_REG_AC97_CODEC_ID_PRIMARY	0x00

#define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01

#define   VIA_REG_AC97_SECONDARY_VALID	(1<<27)

#define   VIA_REG_AC97_PRIMARY_VALID	(1<<25)

#define   VIA_REG_AC97_BUSY		(1<<24)

#define   VIA_REG_AC97_READ		(1<<23)

#define   VIA_REG_AC97_CMD_SHIFT	16

#define   VIA_REG_AC97_CMD_MASK		0x7e

#define   VIA_REG_AC97_DATA_SHIFT	0

#define   VIA_REG_AC97_DATA_MASK	0xffff


#define VIA_REG_SGD_SHADOW		0x84	
/* dword */

#define   VIA_REG_SGD_STAT_PB_FLAG	(1<<0)

#define   VIA_REG_SGD_STAT_CP_FLAG	(1<<1)

#define   VIA_REG_SGD_STAT_FM_FLAG	(1<<2)

#define   VIA_REG_SGD_STAT_PB_EOL	(1<<4)

#define   VIA_REG_SGD_STAT_CP_EOL	(1<<5)

#define   VIA_REG_SGD_STAT_FM_EOL	(1<<6)

#define   VIA_REG_SGD_STAT_PB_STOP	(1<<8)

#define   VIA_REG_SGD_STAT_CP_STOP	(1<<9)

#define   VIA_REG_SGD_STAT_FM_STOP	(1<<10)

#define   VIA_REG_SGD_STAT_PB_ACTIVE	(1<<12)

#define   VIA_REG_SGD_STAT_CP_ACTIVE	(1<<13)

#define   VIA_REG_SGD_STAT_FM_ACTIVE	(1<<14)

#define   VIA_REG_SGD_STAT_MR_FLAG      (1<<16)

#define   VIA_REG_SGD_STAT_MW_FLAG      (1<<17)

#define   VIA_REG_SGD_STAT_MR_EOL       (1<<20)

#define   VIA_REG_SGD_STAT_MW_EOL       (1<<21)

#define   VIA_REG_SGD_STAT_MR_STOP      (1<<24)

#define   VIA_REG_SGD_STAT_MW_STOP      (1<<25)

#define   VIA_REG_SGD_STAT_MR_ACTIVE    (1<<28)

#define   VIA_REG_SGD_STAT_MW_ACTIVE    (1<<29)


#define VIA_REG_GPI_STATUS		0x88

#define VIA_REG_GPI_INTR		0x8c


#define VIA_TBL_BIT_FLAG	0x40000000

#define VIA_TBL_BIT_EOL		0x80000000

/* pci space */

#define VIA_ACLINK_STAT		0x40

#define  VIA_ACLINK_C11_READY	0x20

#define  VIA_ACLINK_C10_READY	0x10

#define  VIA_ACLINK_C01_READY	0x04 
/* secondary codec ready */

#define  VIA_ACLINK_LOWPOWER	0x02 
/* low-power state */

#define  VIA_ACLINK_C00_READY	0x01 
/* primary codec ready */

#define VIA_ACLINK_CTRL		0x41

#define  VIA_ACLINK_CTRL_ENABLE	0x80 
/* 0: disable, 1: enable */

#define  VIA_ACLINK_CTRL_RESET	0x40 
/* 0: assert, 1: de-assert */

#define  VIA_ACLINK_CTRL_SYNC	0x20 
/* 0: release SYNC, 1: force SYNC hi */

#define  VIA_ACLINK_CTRL_SDO	0x10 
/* 0: release SDO, 1: force SDO hi */

#define  VIA_ACLINK_CTRL_VRA	0x08 
/* 0: disable VRA, 1: enable VRA */

#define  VIA_ACLINK_CTRL_PCM	0x04 
/* 0: disable PCM, 1: enable PCM */

#define  VIA_ACLINK_CTRL_FM	0x02 
/* via686 only */

#define  VIA_ACLINK_CTRL_SB	0x01 
/* via686 only */

#define  VIA_ACLINK_CTRL_INIT	(VIA_ACLINK_CTRL_ENABLE|\
                                 VIA_ACLINK_CTRL_RESET|\
                                 VIA_ACLINK_CTRL_PCM)

#define VIA_FUNC_ENABLE		0x42

#define  VIA_FUNC_MIDI_PNP	0x80 
/* FIXME: it's 0x40 in the datasheet! */

#define  VIA_FUNC_MIDI_IRQMASK	0x40 
/* FIXME: not documented! */

#define  VIA_FUNC_RX2C_WRITE	0x20

#define  VIA_FUNC_SB_FIFO_EMPTY	0x10

#define  VIA_FUNC_ENABLE_GAME	0x08

#define  VIA_FUNC_ENABLE_FM	0x04

#define  VIA_FUNC_ENABLE_MIDI	0x02

#define  VIA_FUNC_ENABLE_SB	0x01

#define VIA_PNP_CONTROL		0x43

#define VIA_MC97_CTRL		0x44

#define  VIA_MC97_CTRL_ENABLE   0x80

#define  VIA_MC97_CTRL_SECONDARY 0x40

#define  VIA_MC97_CTRL_INIT     (VIA_MC97_CTRL_ENABLE|\
                                 VIA_MC97_CTRL_SECONDARY)


/*
 * pcm stream
 */


struct snd_via_sg_table {
	
unsigned int offset;
	
unsigned int size;
} ;


#define VIA_TABLE_SIZE	255


struct viadev {
	
unsigned int reg_offset;
	
unsigned long port;
	
int direction;	/* playback = 0, capture = 1 */
        
struct snd_pcm_substream *substream;
	
int running;
	
unsigned int tbl_entries; /* # descriptors */
	
struct snd_dma_buffer table;
	
struct snd_via_sg_table *idx_table;
	/* for recovery from the unexpected pointer */
	
unsigned int lastpos;
	
unsigned int bufsize;
	
unsigned int bufsize2;
};


enum { TYPE_CARD_VIA82XX_MODEM = 1 };


#define VIA_MAX_MODEM_DEVS	2


struct via82xx_modem {
	
int irq;

	
unsigned long port;

	
unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */

	
struct pci_dev *pci;
	
struct snd_card *card;

	
unsigned int num_devs;
	

unsigned int playback_devno, capture_devno;
	
struct viadev devs[VIA_MAX_MODEM_DEVS];

	
struct snd_pcm *pcms[2];

	
struct snd_ac97_bus *ac97_bus;
	
struct snd_ac97 *ac97;
	
unsigned int ac97_clock;
	
unsigned int ac97_secondary;	/* secondary AC'97 codec is present */

	
spinlock_t reg_lock;
	
struct snd_info_entry *proc_entry;
};


static const struct pci_device_id snd_via82xx_modem_ids[] = {
	{ PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, },
	{ 0, }
};

MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids);

/*
 */

/*
 * allocate and initialize the descriptor buffers
 * periods = number of periods
 * fragsize = period size in bytes
 */

static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, struct pci_dev *pci, unsigned int periods, unsigned int fragsize) { unsigned int i, idx, ofs, rest; struct via82xx_modem *chip = snd_pcm_substream_chip(substream); if (dev->table.area == NULL) { /* the start of each lists must be aligned to 8 bytes, * but the kernel pages are much bigger, so we don't care */ if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), &dev->table) < 0) return -ENOMEM; } if (! dev->idx_table) { dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); if (! dev->idx_table) return -ENOMEM; } /* fill the entries */ idx = 0; ofs = 0; for (i = 0; i < periods; i++) { rest = fragsize; /* fill descriptors for a period. * a period can be split to several descriptors if it's * over page boundary. */ do { unsigned int r; unsigned int flag; unsigned int addr; if (idx >= VIA_TABLE_SIZE) { dev_err(&pci->dev, "too much table size!\n"); return -EINVAL; } addr = snd_pcm_sgbuf_get_addr(substream, ofs); ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr); r = PAGE_SIZE - (ofs % PAGE_SIZE); if (rest < r) r = rest; rest -= r; if (! rest) { if (i == periods - 1) flag = VIA_TBL_BIT_EOL; /* buffer boundary */ else flag = VIA_TBL_BIT_FLAG; /* period boundary */ } else flag = 0; /* period continues to the next */ /* dev_dbg(&pci->dev, "tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest); */ ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); dev->idx_table[idx].offset = ofs; dev->idx_table[idx].size = r; ofs += r; idx++; } while (rest > 0); } dev->tbl_entries = idx; dev->bufsize = periods * fragsize; dev->bufsize2 = dev->bufsize / 2; return 0; }

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static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, struct pci_dev *pci) { if (dev->table.area) { snd_dma_free_pages(&dev->table); dev->table.area = NULL; } kfree(dev->idx_table); dev->idx_table = NULL; return 0; }

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/* * Basic I/O */
static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) { return inl(VIAREG(chip, AC97)); }

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static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) { outl(val, VIAREG(chip, AC97)); }

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static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) { unsigned int timeout = 1000; /* 1ms */ unsigned int val; while (timeout-- > 0) { udelay(1); if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) return val & 0xffff; } dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip)); return -EIO; }

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static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) { unsigned int timeout = 1000; /* 1ms */ unsigned int val, val1; unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : VIA_REG_AC97_SECONDARY_VALID; while (timeout-- > 0) { val = snd_via82xx_codec_xread(chip); val1 = val & (VIA_REG_AC97_BUSY | stat); if (val1 == stat) return val & 0xffff; udelay(1); } return -EIO; }

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static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) { struct via82xx_modem *chip = ac97->private_data; int err; err = snd_via82xx_codec_ready(chip, ac97->num); /* here we need to wait fairly for long time.. */ msleep(500); }

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static void snd_via82xx_codec_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) { struct via82xx_modem *chip = ac97->private_data; unsigned int xval; if(reg == AC97_GPIO_STATUS) { outl(val, VIAREG(chip, GPI_STATUS)); return; } xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; xval |= reg << VIA_REG_AC97_CMD_SHIFT; xval |= val << VIA_REG_AC97_DATA_SHIFT; snd_via82xx_codec_xwrite(chip, xval); snd_via82xx_codec_ready(chip, ac97->num); }

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static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) { struct via82xx_modem *chip = ac97->private_data; unsigned int xval, val = 0xffff; int again = 0; xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; xval |= VIA_REG_AC97_READ; xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; while (1) { if (again++ > 3) { dev_err(chip->card->dev, "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip)); return 0xffff; } snd_via82xx_codec_xwrite(chip, xval); udelay (20); if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { udelay(25); val = snd_via82xx_codec_xread(chip); break; } } return val & 0xffff; }

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static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) { outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, VIADEV_REG(viadev, OFFSET_CONTROL)); inb(VIADEV_REG(viadev, OFFSET_CONTROL)); udelay(50); /* disable interrupts */ outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); /* clear interrupts */ outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); viadev->lastpos = 0; }

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/* * Interrupt handler */
static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) { struct via82xx_modem *chip = dev_id; unsigned int status; unsigned int i; status = inl(VIAREG(chip, SGD_SHADOW)); if (! (status & chip->intr_mask)) { return IRQ_NONE; } // _skip_sgd: /* check status for each stream */ spin_lock(&chip->reg_lock); for (i = 0; i < chip->num_devs; i++) { struct viadev *viadev = &chip->devs[i]; unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); if (! c_status) continue; if (viadev->substream && viadev->running) { spin_unlock(&chip->reg_lock); snd_pcm_period_elapsed(viadev->substream); spin_lock(&chip->reg_lock); } outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ } spin_unlock(&chip->reg_lock); return IRQ_HANDLED; }

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/* * PCM callbacks */ /* * trigger callback */
static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) { struct via82xx_modem *chip = snd_pcm_substream_chip(substream); struct viadev *viadev = substream->runtime->private_data; unsigned char val = 0; switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_SUSPEND: val |= VIA_REG_CTRL_START; viadev->running = 1; break; case SNDRV_PCM_TRIGGER_STOP: val = VIA_REG_CTRL_TERMINATE; viadev->running = 0; break; case SNDRV_PCM_TRIGGER_PAUSE_PUSH: val |= VIA_REG_CTRL_PAUSE; viadev->running = 0; break; case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: viadev->running = 1; break; default: return -EINVAL; } outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); if (cmd == SNDRV_PCM_TRIGGER_STOP) snd_via82xx_channel_reset(chip, viadev); return 0; }

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/* * pointer callbacks */ /* * calculate the linear position at the given sg-buffer index and the rest count */ #define check_invalid_pos(viadev,pos) \ ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\ viadev->lastpos < viadev->bufsize2))
static inline unsigned int calc_linear_pos(struct via82xx_modem *chip, struct viadev *viadev, unsigned int idx, unsigned int count) { unsigned int size, res; size = viadev->idx_table[idx].size; res = viadev->idx_table[idx].offset + size - count; /* check the validity of the calculated position */ if (size < count) { dev_err(chip->card->dev, "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count); res = viadev->lastpos; } else if (check_invalid_pos(viadev, res)) { #ifdef POINTER_DEBUG dev_dbg(chip->card->dev, "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, viadev->bufsize2, viadev->idx_table[idx].offset, viadev->idx_table[idx].size, count); #endif if (count && size < count) { dev_dbg(chip->card->dev, "invalid via82xx_cur_ptr, using last valid pointer\n"); res = viadev->lastpos; } else { if (! count) /* bogus count 0 on the DMA boundary? */ res = viadev->idx_table[idx].offset; else /* count register returns full size * when end of buffer is reached */ res = viadev->idx_table[idx].offset + size; if (check_invalid_pos(viadev, res)) { dev_dbg(chip->card->dev, "invalid via82xx_cur_ptr (2), using last valid pointer\n"); res = viadev->lastpos; } } } viadev->lastpos = res; /* remember the last position */ if (res >= viadev->bufsize) res -= viadev->bufsize; return res; }

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jaroslav kyselajaroslav kysela23185.56%133.33%
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/* * get the current pointer on via686 */
static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) { struct via82xx_modem *chip = snd_pcm_substream_chip(substream); struct viadev *viadev = substream->runtime->private_data; unsigned int idx, ptr, count, res; if (snd_BUG_ON(!viadev->tbl_entries)) return 0; if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) return 0; spin_lock(&chip->reg_lock); count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; /* The via686a does not have the current index register, * so we need to calculate the index from CURR_PTR. */ ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); if (ptr <= (unsigned int)viadev->table.addr) idx = 0; else /* CURR_PTR holds the address + 8 */ idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries; res = calc_linear_pos(chip, viadev, idx, count); spin_unlock(&chip->reg_lock); return bytes_to_frames(substream->runtime, res); }

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jaroslav kyselajaroslav kysela16889.84%125.00%
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/* * hw_params callback: * allocate the buffer and build up the buffer description table */
static int snd_via82xx_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) { struct via82xx_modem *chip = snd_pcm_substream_chip(substream); struct viadev *viadev = substream->runtime->private_data; int err; err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); if (err < 0) return err; err = build_via_table(viadev, substream, chip->pci, params_periods(hw_params), params_period_bytes(hw_params)); if (err < 0) return err; snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); return 0; }

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jaroslav kyselajaroslav kysela11393.39%150.00%
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/* * hw_free callback: * clean up the buffer description table and release the buffer */
static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) { struct via82xx_modem *chip = snd_pcm_substream_chip(substream); struct viadev *viadev = substream->runtime->private_data; clean_via_table(viadev, substream, chip->pci); snd_pcm_lib_free_pages(substream); return 0; }

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jaroslav kyselajaroslav kysela4588.24%150.00%
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/* * set up the table pointer */
static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev) { snd_via82xx_codec_ready(chip, chip->ac97_secondary); outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); udelay(20); snd_via82xx_codec_ready(chip, chip->ac97_secondary); }

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jaroslav kyselajaroslav kysela5493.10%150.00%
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/* * prepare callback for playback and capture */
static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream) { struct via82xx_modem *chip = snd_pcm_substream_chip(substream); struct viadev *viadev = substream->runtime->private_data; snd_via82xx_channel_reset(chip, viadev); /* this must be set after channel_reset */ snd_via82xx_set_table_ptr(chip, viadev); outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE)); return 0; }

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jaroslav kyselajaroslav kysela6090.91%150.00%
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/* * pcm hardware definition, identical for both playback and capture */ static struct snd_pcm_hardware snd_via82xx_hw = { .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID | /* SNDRV_PCM_INFO_RESUME | */ SNDRV_PCM_INFO_PAUSE), .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, .rate_min = 8000, .rate_max = 16000, .channels_min = 1, .channels_max = 1, .buffer_bytes_max = 128 * 1024, .period_bytes_min = 32, .period_bytes_max = 128 * 1024, .periods_min = 2, .periods_max = VIA_TABLE_SIZE / 2, .fifo_size = 0, }; /* * open callback skeleton */
static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev, struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; int err; static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; static struct snd_pcm_hw_constraint_list hw_constraints_rates = { .count = ARRAY_SIZE(rates), .list = rates, .mask = 0, }; runtime->hw = snd_via82xx_hw; if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0) return err; /* we may remove following constaint when we modify table entries in interrupt */ if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) return err; runtime->private_data = viadev; viadev->substream = substream; return 0; }

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jaroslav kyselajaroslav kysela12792.70%150.00%
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/* * open callback for playback */
static int snd_via82xx_playback_open(struct snd_pcm_substream *substream) { struct via82xx_modem *chip = snd_pcm_substream_chip(substream); struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number]; return snd_via82xx_modem_pcm_open(chip, viadev, substream); }

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jaroslav kyselajaroslav kysela4488.00%150.00%
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/* * open callback for capture */
static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) { struct via82xx_modem *chip = snd_pcm_substream_chip(substream); struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; return snd_via82xx_modem_pcm_open(chip, viadev, substream); }

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jaroslav kyselajaroslav kysela4688.46%150.00%
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/* * close callback */
static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) { struct viadev *viadev = substream->runtime->private_data; viadev->substream = NULL; return 0; }

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jaroslav kyselajaroslav kysela2787.10%150.00%
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/* via686 playback callbacks */ static struct snd_pcm_ops snd_via686_playback_ops = { .open = snd_via82xx_playback_open, .close = snd_via82xx_pcm_close, .ioctl = snd_pcm_lib_ioctl, .hw_params = snd_via82xx_hw_params, .hw_free = snd_via82xx_hw_free, .prepare = snd_via82xx_pcm_prepare, .trigger = snd_via82xx_pcm_trigger, .pointer = snd_via686_pcm_pointer, .page = snd_pcm_sgbuf_ops_page, }; /* via686 capture callbacks */ static struct snd_pcm_ops snd_via686_capture_ops = { .open = snd_via82xx_capture_open, .close = snd_via82xx_pcm_close, .ioctl = snd_pcm_lib_ioctl, .hw_params = snd_via82xx_hw_params, .hw_free = snd_via82xx_hw_free, .prepare = snd_via82xx_pcm_prepare, .trigger = snd_via82xx_pcm_trigger, .pointer = snd_via686_pcm_pointer, .page = snd_pcm_sgbuf_ops_page, };
static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, int direction) { chip->devs[idx].reg_offset = reg_offset; chip->devs[idx].direction = direction; chip->devs[idx].port = chip->port + reg_offset; }

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jaroslav kyselajaroslav kysela5696.55%150.00%
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/* * create a pcm instance for via686a/b */
static int snd_via686_pcm_new(struct via82xx_modem *chip) { struct snd_pcm *pcm; int err; chip->playback_devno = 0; chip->capture_devno = 1; chip->num_devs = 2; chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); if (err < 0) return err; snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); pcm->dev_class = SNDRV_PCM_CLASS_MODEM; pcm->private_data = chip; strcpy(pcm->name, chip->card->shortname); chip->pcms[0] = pcm; init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0) return err; return 0; }

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Total189100.00%3100.00%

/* * Mixer part */
static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) { struct via82xx_modem *chip = bus->private_data; chip->ac97_bus = NULL; }

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static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) { struct via82xx_modem *chip = ac97->private_data; chip->ac97 = NULL; }

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static int snd_via82xx_mixer_new(struct via82xx_modem *chip) { struct snd_ac97_template ac97; int err; static struct snd_ac97_bus_ops ops = { .write = snd_via82xx_codec_write, .read = snd_via82xx_codec_read, .wait = snd_via82xx_codec_wait, }; if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) return err; chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; chip->ac97_bus->clock = chip->ac97_clock; memset(&ac97, 0, sizeof(ac97)); ac97.private_data = chip; ac97.private_free = snd_via82xx_mixer_free_ac97; ac97.pci = chip->pci; ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; ac97.num = chip->ac97_secondary; if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) return err; return 0; }

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jaroslav kyselajaroslav kysela15895.18%133.33%
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/* * proc interface */
static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { struct via82xx_modem *chip = entry->private_data; int i; snd_iprintf(buffer, "%s\n\n", chip->card->longname); for (i = 0; i < 0xa0; i += 4) { snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); } }

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static void snd_via82xx_proc_init(struct via82xx_modem *chip) { struct snd_info_entry *entry; if (! snd_card_proc_new(chip->card, "via82xx", &entry)) snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read); }

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jaroslav kyselajaroslav kysela3690.00%150.00%
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/* * */
static int snd_via82xx_chip_init(struct via82xx_modem *chip) { unsigned int val; unsigned long end_time; unsigned char pval; pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); udelay(100); } pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ /* deassert ACLink reset, force SYNC */ pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_ENABLE | VIA_ACLINK_CTRL_RESET | VIA_ACLINK_CTRL_SYNC); udelay(100); #if 1 /* FIXME: should we do full reset here for all chip models? */ pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); udelay(100); #else /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); udelay(2); #endif /* ACLink on, deassert ACLink reset, VSR, SGD data out */ pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); udelay(100); } pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { /* ACLink on, deassert ACLink reset, VSR, SGD data out */ pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); udelay(100); } /* wait until codec ready */ end_time = jiffies + msecs_to_jiffies(750); do { pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ break; schedule_timeout_uninterruptible(1); } while (time_before(jiffies, end_time)); if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) dev_err(chip->card->dev, "AC'97 codec is not ready [0x%x]\n", val); snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | VIA_REG_AC97_SECONDARY_VALID | (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); end_time = jiffies + msecs_to_jiffies(750); snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | VIA_REG_AC97_SECONDARY_VALID | (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); do { if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { chip->ac97_secondary = 1; goto __ac97_ok2; } schedule_timeout_uninterruptible(1); } while (time_before(jiffies, end_time)); /* This is ok, the most of motherboards have only one codec */ __ac97_ok2: /* route FM trap to IRQ, disable FM trap */ // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); /* disable all GPI interrupts */ outl(0, VIAREG(chip, GPI_INTR)); return 0; }

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jaroslav kyselajaroslav kysela34990.18%120.00%
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rene hermanrene herman20.52%120.00%
Total387100.00%5100.00%

#ifdef CONFIG_PM_SLEEP /* * power management */
static int snd_via82xx_suspend(struct device *dev) { struct snd_card *card = dev_get_drvdata(dev); struct via82xx_modem *chip = card->private_data; int i; snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); for (i = 0; i < 2; i++) snd_pcm_suspend_all(chip->pcms[i]); for (i = 0; i < chip->num_devs; i++) snd_via82xx_channel_reset(chip, &chip->devs[i]); synchronize_irq(chip->irq); snd_ac97_suspend(chip->ac97); return 0; }

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static int snd_via82xx_resume(struct device *dev) { struct snd_card *card = dev_get_drvdata(dev); struct via82xx_modem *chip = card->private_data; int i; snd_via82xx_chip_init(chip); snd_ac97_resume(chip->ac97); for (i = 0; i < chip->num_devs; i++) snd_via82xx_channel_reset(chip, &chip->devs[i]); snd_power_change_state(card, SNDRV_CTL_POWER_D0); return 0; }

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jaroslav kyselajaroslav kysela6072.29%125.00%
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static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume); #define SND_VIA82XX_PM_OPS &snd_via82xx_pm #else #define SND_VIA82XX_PM_OPS NULL #endif /* CONFIG_PM_SLEEP */
static int snd_via82xx_free(struct via82xx_modem *chip) { unsigned int i; if (chip->irq < 0) goto __end_hw; /* disable interrupts */ for (i = 0; i < chip->num_devs; i++) snd_via82xx_channel_reset(chip, &chip->devs[i]); __end_hw: if (chip->irq >= 0) free_irq(chip->irq, chip); pci_release_regions(chip->pci); pci_disable_device(chip->pci); kfree(chip); return 0; }

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jaroslav kyselajaroslav kysela9497.92%150.00%
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static int snd_via82xx_dev_free(struct snd_device *device) { struct via82xx_modem *chip = device->device_data; return snd_via82xx_free(chip); }

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jaroslav kyselajaroslav kysela2284.62%150.00%
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static int snd_via82xx_create(struct snd_card *card, struct pci_dev *pci, int chip_type, int revision, unsigned int ac97_clock, struct via82xx_modem **r_via) { struct via82xx_modem *chip; int err; static struct snd_device_ops ops = { .dev_free = snd_via82xx_dev_free, }; if ((err = pci_enable_device(pci)) < 0) return err; if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { pci_disable_device(pci); return -ENOMEM; } spin_lock_init(&chip->reg_lock); chip->card = card; chip->pci = pci; chip->irq = -1; if ((err = pci_request_regions(pci, card->driver)) < 0) { kfree(chip); pci_disable_device(pci); return err; } chip->port = pci_resource_start(pci, 0); if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED, KBUILD_MODNAME, chip)) { dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); snd_via82xx_free(chip); return -EBUSY; } chip->irq = pci->irq; if (ac97_clock >= 8000 && ac97_clock <= 48000) chip->ac97_clock = ac97_clock; synchronize_irq(chip->irq); if ((err = snd_via82xx_chip_init(chip)) < 0) { snd_via82xx_free(chip); return err; } if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { snd_via82xx_free(chip); return err; } /* The 8233 ac97 controller does not implement the master bit * in the pci command register. IMHO this is a violation of the PCI spec. * We call pci_set_master here because it does not hurt. */ pci_set_master(pci); *r_via = chip; return 0; }

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jaroslav kyselajaroslav kysela29194.79%116.67%
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thomas gleixnerthomas gleixner10.33%116.67%
Total307100.00%6100.00%


static int snd_via82xx_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) { struct snd_card *card; struct via82xx_modem *chip; int chip_type = 0, card_type; unsigned int i; int err; err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card); if (err < 0) return err; card_type = pci_id->driver_data; switch (card_type) { case TYPE_CARD_VIA82XX_MODEM: strcpy(card->driver, "VIA82XX-MODEM"); sprintf(card->shortname, "VIA 82XX modem"); break; default: dev_err(card->dev, "invalid card type %d\n", card_type); err = -EINVAL; goto __error; } if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, ac97_clock, &chip)) < 0) goto __error; card->private_data = chip; if ((err = snd_via82xx_mixer_new(chip)) < 0) goto __error; if ((err = snd_via686_pcm_new(chip)) < 0 ) goto __error; /* disable interrupts */ for (i = 0; i < chip->num_devs; i++) snd_via82xx_channel_reset(chip, &chip->devs[i]); sprintf(card->longname, "%s at 0x%lx, irq %d", card->shortname, chip->port, chip->irq); snd_via82xx_proc_init(chip); if ((err = snd_card_register(card)) < 0) { snd_card_free(card); return err; } pci_set_drvdata(pci, card); return 0; __error: snd_card_free(card); return err; }

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jaroslav kyselajaroslav kysela25989.31%114.29%
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auke kokauke kok20.69%114.29%
Total290100.00%7100.00%


static void snd_via82xx_remove(struct pci_dev *pci) { snd_card_free(pci_get_drvdata(pci)); }

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jaroslav kyselajaroslav kysela19100.00%1100.00%
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static struct pci_driver via82xx_modem_driver = { .name = KBUILD_MODNAME, .id_table = snd_via82xx_modem_ids, .probe = snd_via82xx_probe, .remove = snd_via82xx_remove, .driver = { .pm = SND_VIA82XX_PM_OPS, }, }; module_pci_driver(via82xx_modem_driver);

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PersonTokensPropCommitsCommitProp
jaroslav kyselajaroslav kysela493291.15%412.12%
takashi iwaitakashi iwai3987.36%1751.52%
sasha khapyorskysasha khapyorsky300.55%39.09%
nishanth aravamudannishanth aravamudan290.54%13.03%
benoit tainebenoit taine60.11%13.03%
joe perchesjoe perches50.09%13.03%
clemens ladischclemens ladisch40.07%13.03%
rene hermanrene herman20.04%13.03%
auke kokauke kok20.04%13.03%
thomas gleixnerthomas gleixner10.02%13.03%
paul gortmakerpaul gortmaker10.02%13.03%
rusty russellrusty russell10.02%13.03%
Total5411100.00%33100.00%
Directory: sound/pci
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