/*
* Routines for control of the AK4114 via I2C and 4-wire serial interface
* IEC958 (S/PDIF) receiver by Asahi Kasei
- * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*
*
* This program is free software; you can redistribute it and/or modify
*
*/
-#include <sound/driver.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ak4114.h>
#include <sound/asoundef.h>
+#include <sound/info.h>
-MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei");
MODULE_LICENSE("GPL");
#define AK4114_ADDR 0x00 /* fixed address */
static void ak4114_stats(struct work_struct *work);
+static void ak4114_init_regs(struct ak4114 *chip);
static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val)
{
ak4114->write(ak4114->private_data, reg, val);
if (reg <= AK4114_REG_INT1_MASK)
ak4114->regmap[reg] = val;
- else if (reg >= AK4114_REG_RXCSB0 && reg <= AK4114_REG_TXCSB4)
- ak4114->txcsb[reg-AK4114_REG_RXCSB0] = val;
+ else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
+ ak4114->txcsb[reg-AK4114_REG_TXCSB0] = val;
}
static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg)
{
chip->init = 1; /* don't schedule new work */
mb();
- if (chip->workqueue != NULL) {
- flush_workqueue(chip->workqueue);
- destroy_workqueue(chip->workqueue);
- }
+ cancel_delayed_work(&chip->work);
+ flush_scheduled_work();
kfree(chip);
}
int snd_ak4114_create(struct snd_card *card,
ak4114_read_t *read, ak4114_write_t *write,
- unsigned char pgm[7], unsigned char txcsb[5],
+ const unsigned char pgm[7], const unsigned char txcsb[5],
void *private_data, struct ak4114 **r_ak4114)
{
struct ak4114 *chip;
chip->read = read;
chip->write = write;
chip->private_data = private_data;
+ INIT_DELAYED_WORK(&chip->work, ak4114_stats);
for (reg = 0; reg < 7; reg++)
chip->regmap[reg] = pgm[reg];
for (reg = 0; reg < 5; reg++)
chip->txcsb[reg] = txcsb[reg];
- chip->workqueue = create_workqueue("snd-ak4114");
- if (chip->workqueue == NULL) {
- kfree(chip);
- return -ENOMEM;
- }
-
- snd_ak4114_reinit(chip);
+ ak4114_init_regs(chip);
chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT);
chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
if (reg <= AK4114_REG_INT1_MASK)
reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
- reg_write(chip, reg, (chip->txcsb[reg] & ~mask) | val);
+ reg_write(chip, reg,
+ (chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val);
}
-void snd_ak4114_reinit(struct ak4114 *chip)
+static void ak4114_init_regs(struct ak4114 *chip)
{
unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
- chip->init = 1;
- mb();
- flush_workqueue(chip->workqueue);
/* bring the chip to reset state and powerdown state */
reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN));
udelay(200);
reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
/* release powerdown, everything is initialized now */
reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN);
+}
+
+void snd_ak4114_reinit(struct ak4114 *chip)
+{
+ chip->init = 1;
+ mb();
+ flush_scheduled_work();
+ ak4114_init_regs(chip);
/* bring up statistics / event queing */
chip->init = 0;
- INIT_DELAYED_WORK(&chip->work, ak4114_stats);
- queue_delayed_work(chip->workqueue, &chip->work, HZ / 10);
+ if (chip->kctls[0])
+ schedule_delayed_work(&chip->work, HZ / 10);
}
static unsigned int external_rate(unsigned char rcs1)
return 0;
}
-static int snd_ak4114_in_bit_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
-{
- uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
- uinfo->count = 1;
- uinfo->value.integer.min = 0;
- uinfo->value.integer.max = 1;
- return 0;
-}
+#define snd_ak4114_in_bit_info snd_ctl_boolean_mono_info
static int snd_ak4114_in_bit_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4114_in_bit_info,
.get = snd_ak4114_in_bit_get,
- .private_value = (6<<8) | AK4114_REG_RCS1,
+ .private_value = (6<<8) | AK4114_REG_RCS0,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4114_in_bit_info,
.get = snd_ak4114_in_bit_get,
- .private_value = (3<<8) | AK4114_REG_RCS1,
+ .private_value = (3<<8) | AK4114_REG_RCS0,
+},
+{
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "IEC958 PPL Lock Status",
+ .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .info = snd_ak4114_in_bit_info,
+ .get = snd_ak4114_in_bit_get,
+ .private_value = (1<<31) | (4<<8) | AK4114_REG_RCS0,
}
};
+
+static void snd_ak4114_proc_regs_read(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ struct ak4114 *ak4114 = entry->private_data;
+ int reg, val;
+ /* all ak4114 registers 0x00 - 0x1f */
+ for (reg = 0; reg < 0x20; reg++) {
+ val = reg_read(ak4114, reg);
+ snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
+ }
+}
+
+static void snd_ak4114_proc_init(struct ak4114 *ak4114)
+{
+ struct snd_info_entry *entry;
+ if (!snd_card_proc_new(ak4114->card, "ak4114", &entry))
+ snd_info_set_text_ops(entry, ak4114, snd_ak4114_proc_regs_read);
+}
+
int snd_ak4114_build(struct ak4114 *ak4114,
struct snd_pcm_substream *ply_substream,
struct snd_pcm_substream *cap_substream)
unsigned int idx;
int err;
- snd_assert(cap_substream, return -EINVAL);
+ if (snd_BUG_ON(!cap_substream))
+ return -EINVAL;
ak4114->playback_substream = ply_substream;
ak4114->capture_substream = cap_substream;
for (idx = 0; idx < AK4114_CONTROLS; idx++) {
kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
if (kctl == NULL)
return -ENOMEM;
- if (!strstr(kctl->id.name, "Playback")) {
+ if (strstr(kctl->id.name, "Playback")) {
if (ply_substream == NULL) {
snd_ctl_free_one(kctl);
ak4114->kctls[idx] = NULL;
return err;
ak4114->kctls[idx] = kctl;
}
+ snd_ak4114_proc_init(ak4114);
+ /* trigger workq */
+ schedule_delayed_work(&ak4114->work, HZ / 10);
return 0;
}
+/* notify kcontrols if any parameters are changed */
+static void ak4114_notify(struct ak4114 *ak4114,
+ unsigned char rcs0, unsigned char rcs1,
+ unsigned char c0, unsigned char c1)
+{
+ if (!ak4114->kctls[0])
+ return;
+
+ if (rcs0 & AK4114_PAR)
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[0]->id);
+ if (rcs0 & AK4114_V)
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[1]->id);
+ if (rcs1 & AK4114_CCRC)
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[2]->id);
+ if (rcs1 & AK4114_QCRC)
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[3]->id);
+
+ /* rate change */
+ if (c1 & 0xf0)
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[4]->id);
+
+ if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[9]->id);
+ if (c0 & AK4114_QINT)
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[10]->id);
+
+ if (c0 & AK4114_AUDION)
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[11]->id);
+ if (c0 & AK4114_AUTO)
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[12]->id);
+ if (c0 & AK4114_DTSCD)
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[13]->id);
+ if (c0 & AK4114_UNLCK)
+ snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
+ &ak4114->kctls[14]->id);
+}
+
int snd_ak4114_external_rate(struct ak4114 *ak4114)
{
unsigned char rcs1;
ak4114->rcs1 = rcs1;
spin_unlock_irqrestore(&ak4114->lock, _flags);
- if (rcs0 & AK4114_PAR)
- snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[0]->id);
- if (rcs0 & AK4114_V)
- snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[1]->id);
- if (rcs1 & AK4114_CCRC)
- snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[2]->id);
- if (rcs1 & AK4114_QCRC)
- snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[3]->id);
-
- /* rate change */
- if (c1 & 0xf0)
- snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[4]->id);
-
- if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
- snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[9]->id);
- if (c0 & AK4114_QINT)
- snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[10]->id);
-
- if (c0 & AK4114_AUDION)
- snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[11]->id);
- if (c0 & AK4114_AUTO)
- snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[12]->id);
- if (c0 & AK4114_DTSCD)
- snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[13]->id);
-
+ ak4114_notify(ak4114, rcs0, rcs1, c0, c1);
if (ak4114->change_callback && (c0 | c1) != 0)
ak4114->change_callback(ak4114, c0, c1);
{
struct ak4114 *chip = container_of(work, struct ak4114, work.work);
- if (chip->init)
- return;
- snd_ak4114_check_rate_and_errors(chip, 0);
- queue_delayed_work(chip->workqueue, &chip->work, HZ / 10);
+ if (!chip->init)
+ snd_ak4114_check_rate_and_errors(chip, chip->check_flags);
+
+ schedule_delayed_work(&chip->work, HZ / 10);
}
EXPORT_SYMBOL(snd_ak4114_create);
projects / linux-2.6-omap-h63xx.git / blobdiff