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Diffstat (limited to 'sound/pci/hda/hda_intel.c')
-rw-r--r--sound/pci/hda/hda_intel.c122
1 files changed, 76 insertions, 46 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index fd12b6991fe4..c096606970ff 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -43,6 +43,7 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/pci.h>
+#include <linux/mutex.h>
#include <sound/core.h>
#include <sound/initval.h>
#include "hda_codec.h"
@@ -53,6 +54,7 @@ static char *id = SNDRV_DEFAULT_STR1;
static char *model;
static int position_fix;
static int probe_mask = -1;
+static int single_cmd;
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
@@ -64,6 +66,8 @@ module_param(position_fix, int, 0444);
MODULE_PARM_DESC(position_fix, "Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size).");
module_param(probe_mask, int, 0444);
MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
+module_param(single_cmd, bool, 0444);
+MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs (for debugging only).");
/* just for backward compatibility */
@@ -235,12 +239,6 @@ enum {
#define NVIDIA_HDA_ENABLE_COHBITS 0x0f
/*
- * Use CORB/RIRB for communication from/to codecs.
- * This is the way recommended by Intel (see below).
- */
-#define USE_CORB_RIRB
-
-/*
*/
struct azx_dev {
@@ -252,7 +250,6 @@ struct azx_dev {
unsigned int fragsize; /* size of each period in bytes */
unsigned int frags; /* number for period in the play buffer */
unsigned int fifo_size; /* FIFO size */
- unsigned int last_pos; /* last updated period position */
void __iomem *sd_addr; /* stream descriptor pointer */
@@ -263,10 +260,11 @@ struct azx_dev {
unsigned int format_val; /* format value to be set in the controller and the codec */
unsigned char stream_tag; /* assigned stream */
unsigned char index; /* stream index */
+ /* for sanity check of position buffer */
+ unsigned int period_intr;
unsigned int opened: 1;
unsigned int running: 1;
- unsigned int period_updating: 1;
};
/* CORB/RIRB */
@@ -300,7 +298,7 @@ struct azx {
/* locks */
spinlock_t reg_lock;
- struct semaphore open_mutex;
+ struct mutex open_mutex;
/* streams (x num_streams) */
struct azx_dev *azx_dev;
@@ -325,6 +323,7 @@ struct azx {
/* flags */
int position_fix;
unsigned int initialized: 1;
+ unsigned int single_cmd: 1;
};
/* driver types */
@@ -388,7 +387,6 @@ static char *driver_short_names[] __devinitdata = {
* Interface for HD codec
*/
-#ifdef USE_CORB_RIRB
/*
* CORB / RIRB interface
*/
@@ -436,11 +434,7 @@ static void azx_init_cmd_io(struct azx *chip)
/* set N=1, get RIRB response interrupt for new entry */
azx_writew(chip, RINTCNT, 1);
/* enable rirb dma and response irq */
-#ifdef USE_CORB_RIRB
azx_writeb(chip, RIRBCTL, ICH6_RBCTL_DMA_EN | ICH6_RBCTL_IRQ_EN);
-#else
- azx_writeb(chip, RIRBCTL, ICH6_RBCTL_DMA_EN);
-#endif
chip->rirb.rp = chip->rirb.cmds = 0;
}
@@ -452,8 +446,8 @@ static void azx_free_cmd_io(struct azx *chip)
}
/* send a command */
-static int azx_send_cmd(struct hda_codec *codec, hda_nid_t nid, int direct,
- unsigned int verb, unsigned int para)
+static int azx_corb_send_cmd(struct hda_codec *codec, hda_nid_t nid, int direct,
+ unsigned int verb, unsigned int para)
{
struct azx *chip = codec->bus->private_data;
unsigned int wp;
@@ -509,18 +503,21 @@ static void azx_update_rirb(struct azx *chip)
}
/* receive a response */
-static unsigned int azx_get_response(struct hda_codec *codec)
+static unsigned int azx_rirb_get_response(struct hda_codec *codec)
{
struct azx *chip = codec->bus->private_data;
int timeout = 50;
while (chip->rirb.cmds) {
if (! --timeout) {
- if (printk_ratelimit())
- snd_printk(KERN_ERR
- "azx_get_response timeout\n");
+ snd_printk(KERN_ERR
+ "hda_intel: azx_get_response timeout, "
+ "switching to single_cmd mode...\n");
chip->rirb.rp = azx_readb(chip, RIRBWP);
chip->rirb.cmds = 0;
+ /* switch to single_cmd mode */
+ chip->single_cmd = 1;
+ azx_free_cmd_io(chip);
return -1;
}
msleep(1);
@@ -528,7 +525,6 @@ static unsigned int azx_get_response(struct hda_codec *codec)
return chip->rirb.res; /* the last value */
}
-#else
/*
* Use the single immediate command instead of CORB/RIRB for simplicity
*
@@ -539,13 +535,10 @@ static unsigned int azx_get_response(struct hda_codec *codec)
* I left the codes, however, for debugging/testing purposes.
*/
-#define azx_alloc_cmd_io(chip) 0
-#define azx_init_cmd_io(chip)
-#define azx_free_cmd_io(chip)
-
/* send a command */
-static int azx_send_cmd(struct hda_codec *codec, hda_nid_t nid, int direct,
- unsigned int verb, unsigned int para)
+static int azx_single_send_cmd(struct hda_codec *codec, hda_nid_t nid,
+ int direct, unsigned int verb,
+ unsigned int para)
{
struct azx *chip = codec->bus->private_data;
u32 val;
@@ -573,7 +566,7 @@ static int azx_send_cmd(struct hda_codec *codec, hda_nid_t nid, int direct,
}
/* receive a response */
-static unsigned int azx_get_response(struct hda_codec *codec)
+static unsigned int azx_single_get_response(struct hda_codec *codec)
{
struct azx *chip = codec->bus->private_data;
int timeout = 50;
@@ -588,9 +581,35 @@ static unsigned int azx_get_response(struct hda_codec *codec)
return (unsigned int)-1;
}
-#define azx_update_rirb(chip)
+/*
+ * The below are the main callbacks from hda_codec.
+ *
+ * They are just the skeleton to call sub-callbacks according to the
+ * current setting of chip->single_cmd.
+ */
+
+/* send a command */
+static int azx_send_cmd(struct hda_codec *codec, hda_nid_t nid,
+ int direct, unsigned int verb,
+ unsigned int para)
+{
+ struct azx *chip = codec->bus->private_data;
+ if (chip->single_cmd)
+ return azx_single_send_cmd(codec, nid, direct, verb, para);
+ else
+ return azx_corb_send_cmd(codec, nid, direct, verb, para);
+}
+
+/* get a response */
+static unsigned int azx_get_response(struct hda_codec *codec)
+{
+ struct azx *chip = codec->bus->private_data;
+ if (chip->single_cmd)
+ return azx_single_get_response(codec);
+ else
+ return azx_rirb_get_response(codec);
+}
-#endif /* USE_CORB_RIRB */
/* reset codec link */
static int azx_reset(struct azx *chip)
@@ -737,7 +756,8 @@ static void azx_init_chip(struct azx *chip)
azx_int_enable(chip);
/* initialize the codec command I/O */
- azx_init_cmd_io(chip);
+ if (! chip->single_cmd)
+ azx_init_cmd_io(chip);
/* program the position buffer */
azx_writel(chip, DPLBASE, (u32)chip->posbuf.addr);
@@ -784,11 +804,10 @@ static irqreturn_t azx_interrupt(int irq, void* dev_id, struct pt_regs *regs)
if (status & azx_dev->sd_int_sta_mask) {
azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK);
if (azx_dev->substream && azx_dev->running) {
- azx_dev->period_updating = 1;
+ azx_dev->period_intr++;
spin_unlock(&chip->reg_lock);
snd_pcm_period_elapsed(azx_dev->substream);
spin_lock(&chip->reg_lock);
- azx_dev->period_updating = 0;
}
}
}
@@ -796,7 +815,7 @@ static irqreturn_t azx_interrupt(int irq, void* dev_id, struct pt_regs *regs)
/* clear rirb int */
status = azx_readb(chip, RIRBSTS);
if (status & RIRB_INT_MASK) {
- if (status & RIRB_INT_RESPONSE)
+ if (! chip->single_cmd && (status & RIRB_INT_RESPONSE))
azx_update_rirb(chip);
azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
}
@@ -1002,10 +1021,10 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
unsigned long flags;
int err;
- down(&chip->open_mutex);
+ mutex_lock(&chip->open_mutex);
azx_dev = azx_assign_device(chip, substream->stream);
if (azx_dev == NULL) {
- up(&chip->open_mutex);
+ mutex_unlock(&chip->open_mutex);
return -EBUSY;
}
runtime->hw = azx_pcm_hw;
@@ -1017,7 +1036,7 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
if ((err = hinfo->ops.open(hinfo, apcm->codec, substream)) < 0) {
azx_release_device(azx_dev);
- up(&chip->open_mutex);
+ mutex_unlock(&chip->open_mutex);
return err;
}
spin_lock_irqsave(&chip->reg_lock, flags);
@@ -1026,7 +1045,7 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
spin_unlock_irqrestore(&chip->reg_lock, flags);
runtime->private_data = azx_dev;
- up(&chip->open_mutex);
+ mutex_unlock(&chip->open_mutex);
return 0;
}
@@ -1038,14 +1057,14 @@ static int azx_pcm_close(struct snd_pcm_substream *substream)
struct azx_dev *azx_dev = get_azx_dev(substream);
unsigned long flags;
- down(&chip->open_mutex);
+ mutex_lock(&chip->open_mutex);
spin_lock_irqsave(&chip->reg_lock, flags);
azx_dev->substream = NULL;
azx_dev->running = 0;
spin_unlock_irqrestore(&chip->reg_lock, flags);
azx_release_device(azx_dev);
hinfo->ops.close(hinfo, apcm->codec, substream);
- up(&chip->open_mutex);
+ mutex_unlock(&chip->open_mutex);
return 0;
}
@@ -1099,7 +1118,6 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
azx_dev->fifo_size = azx_sd_readw(azx_dev, SD_FIFOSIZE) + 1;
else
azx_dev->fifo_size = 0;
- azx_dev->last_pos = 0;
return hinfo->ops.prepare(hinfo, apcm->codec, azx_dev->stream_tag,
azx_dev->format_val, substream);
@@ -1147,10 +1165,20 @@ static snd_pcm_uframes_t azx_pcm_pointer(struct snd_pcm_substream *substream)
struct azx_dev *azx_dev = get_azx_dev(substream);
unsigned int pos;
- if (chip->position_fix == POS_FIX_POSBUF) {
+ if (chip->position_fix == POS_FIX_POSBUF ||
+ chip->position_fix == POS_FIX_AUTO) {
/* use the position buffer */
pos = *azx_dev->posbuf;
+ if (chip->position_fix == POS_FIX_AUTO &&
+ azx_dev->period_intr == 1 && ! pos) {
+ printk(KERN_WARNING
+ "hda-intel: Invalid position buffer, "
+ "using LPIB read method instead.\n");
+ chip->position_fix = POS_FIX_NONE;
+ goto read_lpib;
+ }
} else {
+ read_lpib:
/* read LPIB */
pos = azx_sd_readl(azx_dev, SD_LPIB);
if (chip->position_fix == POS_FIX_FIFO)
@@ -1415,13 +1443,14 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
}
spin_lock_init(&chip->reg_lock);
- init_MUTEX(&chip->open_mutex);
+ mutex_init(&chip->open_mutex);
chip->card = card;
chip->pci = pci;
chip->irq = -1;
chip->driver_type = driver_type;
- chip->position_fix = position_fix ? position_fix : POS_FIX_POSBUF;
+ chip->position_fix = position_fix;
+ chip->single_cmd = single_cmd;
#if BITS_PER_LONG != 64
/* Fix up base address on ULI M5461 */
@@ -1492,8 +1521,9 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
goto errout;
}
/* allocate CORB/RIRB */
- if ((err = azx_alloc_cmd_io(chip)) < 0)
- goto errout;
+ if (! chip->single_cmd)
+ if ((err = azx_alloc_cmd_io(chip)) < 0)
+ goto errout;
/* initialize streams */
azx_init_stream(chip);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.