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path: root/sound/pci/ac97/ac97_pcm.c
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Diffstat (limited to 'sound/pci/ac97/ac97_pcm.c')
-rw-r--r--sound/pci/ac97/ac97_pcm.c65
1 files changed, 54 insertions, 11 deletions
diff --git a/sound/pci/ac97/ac97_pcm.c b/sound/pci/ac97/ac97_pcm.c
index c3e590bf7a0..d15297a6880 100644
--- a/sound/pci/ac97/ac97_pcm.c
+++ b/sound/pci/ac97/ac97_pcm.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* Universal interface for Audio Codec '97
*
* For more details look to AC '97 component specification revision 2.2
@@ -23,16 +23,17 @@
*
*/
-#include <sound/driver.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/export.h>
+
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/control.h>
#include <sound/ac97_codec.h>
#include <sound/asoundef.h>
-#include "ac97_patch.h"
#include "ac97_id.h"
#include "ac97_local.h"
@@ -206,7 +207,7 @@ static int set_spdif_rate(struct snd_ac97 *ac97, unsigned short rate)
mask = AC97_SC_SPSR_MASK;
}
- down(&ac97->reg_mutex);
+ mutex_lock(&ac97->reg_mutex);
old = snd_ac97_read(ac97, reg) & mask;
if (old != bits) {
snd_ac97_update_bits_nolock(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, 0);
@@ -231,7 +232,7 @@ static int set_spdif_rate(struct snd_ac97 *ac97, unsigned short rate)
ac97->spdif_status = sbits;
}
snd_ac97_update_bits_nolock(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, AC97_EA_SPDIF);
- up(&ac97->reg_mutex);
+ mutex_unlock(&ac97->reg_mutex);
return 0;
}
@@ -252,7 +253,7 @@ static int set_spdif_rate(struct snd_ac97 *ac97, unsigned short rate)
* AC97_SPDIF is accepted as a pseudo register to modify the SPDIF
* status bits.
*
- * Returns zero if successful, or a negative error code on failure.
+ * Return: Zero if successful, or a negative error code on failure.
*/
int snd_ac97_set_rate(struct snd_ac97 *ac97, int reg, unsigned int rate)
{
@@ -267,6 +268,7 @@ int snd_ac97_set_rate(struct snd_ac97 *ac97, int reg, unsigned int rate)
return -EINVAL;
}
+ snd_ac97_update_power(ac97, reg, 1);
switch (reg) {
case AC97_PCM_MIC_ADC_RATE:
if ((ac97->regs[AC97_EXTENDED_STATUS] & AC97_EA_VRM) == 0) /* MIC VRA */
@@ -315,6 +317,8 @@ int snd_ac97_set_rate(struct snd_ac97 *ac97, int reg, unsigned int rate)
return 0;
}
+EXPORT_SYMBOL(snd_ac97_set_rate);
+
static unsigned short get_pslots(struct snd_ac97 *ac97, unsigned char *rate_table, unsigned short *spdif_slots)
{
if (!ac97_is_audio(ac97))
@@ -436,6 +440,8 @@ static unsigned int get_rates(struct ac97_pcm *pcm, unsigned int cidx, unsigned
* It assigns available AC97 slots for given PCMs. If none or only
* some slots are available, pcm->xxx.slots and pcm->xxx.rslots[] members
* are reduced and might be zero.
+ *
+ * Return: Zero if successful, or a negative error code on failure.
*/
int snd_ac97_pcm_assign(struct snd_ac97_bus *bus,
unsigned short pcms_count,
@@ -548,6 +554,8 @@ int snd_ac97_pcm_assign(struct snd_ac97_bus *bus,
return 0;
}
+EXPORT_SYMBOL(snd_ac97_pcm_assign);
+
/**
* snd_ac97_pcm_open - opens the given AC97 pcm
* @pcm: the ac97 pcm instance
@@ -556,6 +564,8 @@ int snd_ac97_pcm_assign(struct snd_ac97_bus *bus,
* @slots: a subset of allocated slots (snd_ac97_pcm_assign) for this pcm
*
* It locks the specified slots and sets the given rate to AC97 registers.
+ *
+ * Return: Zero if successful, or a negative error code on failure.
*/
int snd_ac97_pcm_open(struct ac97_pcm *pcm, unsigned int rate,
enum ac97_pcm_cfg cfg, unsigned short slots)
@@ -569,7 +579,6 @@ int snd_ac97_pcm_open(struct ac97_pcm *pcm, unsigned int rate,
r = rate > 48000;
bus = pcm->bus;
if (cfg == AC97_PCM_CFG_SPDIF) {
- int err;
for (cidx = 0; cidx < 4; cidx++)
if (bus->codec[cidx] && (bus->codec[cidx]->ext_id & AC97_EI_SPDIF)) {
err = set_spdif_rate(bus->codec[cidx], rate);
@@ -595,11 +604,14 @@ int snd_ac97_pcm_open(struct ac97_pcm *pcm, unsigned int rate,
}
if (!ok_flag) {
spin_unlock_irq(&pcm->bus->bus_lock);
- snd_printk(KERN_ERR "cannot find configuration for AC97 slot %i\n", i);
+ dev_err(bus->card->dev,
+ "cannot find configuration for AC97 slot %i\n",
+ i);
err = -EAGAIN;
goto error;
}
}
+ pcm->cur_dbl = r;
spin_unlock_irq(&pcm->bus->bus_lock);
for (i = 3; i < 12; i++) {
if (!(slots & (1 << i)))
@@ -608,15 +620,20 @@ int snd_ac97_pcm_open(struct ac97_pcm *pcm, unsigned int rate,
if (pcm->r[r].rslots[cidx] & (1 << i)) {
reg = get_slot_reg(pcm, cidx, i, r);
if (reg == 0xff) {
- snd_printk(KERN_ERR "invalid AC97 slot %i?\n", i);
+ dev_err(bus->card->dev,
+ "invalid AC97 slot %i?\n", i);
continue;
}
if (reg_ok[cidx] & (1 << (reg - AC97_PCM_FRONT_DAC_RATE)))
continue;
- //printk(KERN_DEBUG "setting ac97 reg 0x%x to rate %d\n", reg, rate);
+ dev_dbg(bus->card->dev,
+ "setting ac97 reg 0x%x to rate %d\n",
+ reg, rate);
err = snd_ac97_set_rate(pcm->r[r].codec[cidx], reg, rate);
if (err < 0)
- snd_printk(KERN_ERR "error in snd_ac97_set_rate: cidx=%d, reg=0x%x, rate=%d, err=%d\n", cidx, reg, rate, err);
+ dev_err(bus->card->dev,
+ "error in snd_ac97_set_rate: cidx=%d, reg=0x%x, rate=%d, err=%d\n",
+ cidx, reg, rate, err);
else
reg_ok[cidx] |= (1 << (reg - AC97_PCM_FRONT_DAC_RATE));
}
@@ -631,11 +648,15 @@ int snd_ac97_pcm_open(struct ac97_pcm *pcm, unsigned int rate,
return err;
}
+EXPORT_SYMBOL(snd_ac97_pcm_open);
+
/**
* snd_ac97_pcm_close - closes the given AC97 pcm
* @pcm: the ac97 pcm instance
*
* It frees the locked AC97 slots.
+ *
+ * Return: Zero.
*/
int snd_ac97_pcm_close(struct ac97_pcm *pcm)
{
@@ -643,6 +664,21 @@ int snd_ac97_pcm_close(struct ac97_pcm *pcm)
unsigned short slots = pcm->aslots;
int i, cidx;
+#ifdef CONFIG_SND_AC97_POWER_SAVE
+ int r = pcm->cur_dbl;
+ for (i = 3; i < 12; i++) {
+ if (!(slots & (1 << i)))
+ continue;
+ for (cidx = 0; cidx < 4; cidx++) {
+ if (pcm->r[r].rslots[cidx] & (1 << i)) {
+ int reg = get_slot_reg(pcm, cidx, i, r);
+ snd_ac97_update_power(pcm->r[r].codec[cidx],
+ reg, 0);
+ }
+ }
+ }
+#endif
+
bus = pcm->bus;
spin_lock_irq(&pcm->bus->bus_lock);
for (i = 3; i < 12; i++) {
@@ -652,10 +688,13 @@ int snd_ac97_pcm_close(struct ac97_pcm *pcm)
bus->used_slots[pcm->stream][cidx] &= ~(1 << i);
}
pcm->aslots = 0;
+ pcm->cur_dbl = 0;
spin_unlock_irq(&pcm->bus->bus_lock);
return 0;
}
+EXPORT_SYMBOL(snd_ac97_pcm_close);
+
static int double_rate_hw_constraint_rate(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
@@ -692,6 +731,8 @@ static int double_rate_hw_constraint_channels(struct snd_pcm_hw_params *params,
*
* Installs the hardware constraint rules to prevent using double rates and
* more than two channels at the same time.
+ *
+ * Return: Zero if successful, or a negative error code on failure.
*/
int snd_ac97_pcm_double_rate_rules(struct snd_pcm_runtime *runtime)
{
@@ -707,3 +748,5 @@ int snd_ac97_pcm_double_rate_rules(struct snd_pcm_runtime *runtime)
SNDRV_PCM_HW_PARAM_RATE, -1);
return err;
}
+
+EXPORT_SYMBOL(snd_ac97_pcm_double_rate_rules);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-14 12:04:20 +0000