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Diffstat (limited to 'sound/i2c/cs8427.c')
-rw-r--r--sound/i2c/cs8427.c160
1 files changed, 83 insertions, 77 deletions
diff --git a/sound/i2c/cs8427.c b/sound/i2c/cs8427.c
index 6c2dc3863ac0..46f081268348 100644
--- a/sound/i2c/cs8427.c
+++ b/sound/i2c/cs8427.c
@@ -1,23 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Routines for control of the CS8427 via i2c bus
* IEC958 (S/PDIF) receiver & transmitter by Cirrus Logic
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
- *
- *
- * 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
- *
*/
#include <linux/slab.h>
@@ -25,7 +10,7 @@
#include <linux/init.h>
#include <linux/bitrev.h>
#include <linux/module.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
@@ -65,9 +50,11 @@ int snd_cs8427_reg_write(struct snd_i2c_device *device, unsigned char reg,
buf[0] = reg & 0x7f;
buf[1] = val;
- if ((err = snd_i2c_sendbytes(device, buf, 2)) != 2) {
- snd_printk(KERN_ERR "unable to send bytes 0x%02x:0x%02x "
- "to CS8427 (%i)\n", buf[0], buf[1], err);
+ err = snd_i2c_sendbytes(device, buf, 2);
+ if (err != 2) {
+ dev_err(device->bus->card->dev,
+ "unable to send bytes 0x%02x:0x%02x to CS8427 (%i)\n",
+ buf[0], buf[1], err);
return err < 0 ? err : -EIO;
}
return 0;
@@ -80,14 +67,16 @@ static int snd_cs8427_reg_read(struct snd_i2c_device *device, unsigned char reg)
int err;
unsigned char buf;
- if ((err = snd_i2c_sendbytes(device, &reg, 1)) != 1) {
- snd_printk(KERN_ERR "unable to send register 0x%x byte "
- "to CS8427\n", reg);
+ err = snd_i2c_sendbytes(device, &reg, 1);
+ if (err != 1) {
+ dev_err(device->bus->card->dev,
+ "unable to send register 0x%x byte to CS8427\n", reg);
return err < 0 ? err : -EIO;
}
- if ((err = snd_i2c_readbytes(device, &buf, 1)) != 1) {
- snd_printk(KERN_ERR "unable to read register 0x%x byte "
- "from CS8427\n", reg);
+ err = snd_i2c_readbytes(device, &buf, 1);
+ if (err != 1) {
+ dev_err(device->bus->card->dev,
+ "unable to read register 0x%x byte from CS8427\n", reg);
return err < 0 ? err : -EIO;
}
return buf;
@@ -118,12 +107,13 @@ static int snd_cs8427_send_corudata(struct snd_i2c_device *device,
struct cs8427 *chip = device->private_data;
char *hw_data = udata ?
chip->playback.hw_udata : chip->playback.hw_status;
- char data[32];
+ unsigned char data[32];
int err, idx;
if (!memcmp(hw_data, ndata, count))
return 0;
- if ((err = snd_cs8427_select_corudata(device, udata)) < 0)
+ err = snd_cs8427_select_corudata(device, udata);
+ if (err < 0)
return err;
memcpy(hw_data, ndata, count);
if (udata) {
@@ -150,10 +140,8 @@ static void snd_cs8427_free(struct snd_i2c_device *device)
kfree(device->private_data);
}
-int snd_cs8427_create(struct snd_i2c_bus *bus,
- unsigned char addr,
- unsigned int reset_timeout,
- struct snd_i2c_device **r_cs8427)
+int snd_cs8427_init(struct snd_i2c_bus *bus,
+ struct snd_i2c_device *device)
{
static unsigned char initvals1[] = {
CS8427_REG_CONTROL1 | CS8427_REG_AUTOINC,
@@ -200,36 +188,26 @@ int snd_cs8427_create(struct snd_i2c_bus *bus,
Inhibit E->F transfers. */
CS8427_UD | CS8427_EFTUI | CS8427_DETUI,
};
+ struct cs8427 *chip = device->private_data;
int err;
- struct cs8427 *chip;
- struct snd_i2c_device *device;
unsigned char buf[24];
- if ((err = snd_i2c_device_create(bus, "CS8427",
- CS8427_ADDR | (addr & 7),
- &device)) < 0)
- return err;
- chip = device->private_data = kzalloc(sizeof(*chip), GFP_KERNEL);
- if (chip == NULL) {
- snd_i2c_device_free(device);
- return -ENOMEM;
- }
- device->private_free = snd_cs8427_free;
-
snd_i2c_lock(bus);
err = snd_cs8427_reg_read(device, CS8427_REG_ID_AND_VER);
if (err != CS8427_VER8427A) {
/* give second chance */
- snd_printk(KERN_WARNING "invalid CS8427 signature 0x%x: "
- "let me try again...\n", err);
+ dev_warn(device->bus->card->dev,
+ "invalid CS8427 signature 0x%x: let me try again...\n",
+ err);
err = snd_cs8427_reg_read(device, CS8427_REG_ID_AND_VER);
}
if (err != CS8427_VER8427A) {
snd_i2c_unlock(bus);
- snd_printk(KERN_ERR "unable to find CS8427 signature "
- "(expected 0x%x, read 0x%x),\n",
- CS8427_VER8427A, err);
- snd_printk(KERN_ERR " initialization is not completed\n");
+ dev_err(device->bus->card->dev,
+ "unable to find CS8427 signature (expected 0x%x, read 0x%x),\n",
+ CS8427_VER8427A, err);
+ dev_err(device->bus->card->dev,
+ " initialization is not completed\n");
return -EFAULT;
}
/* turn off run bit while making changes to configuration */
@@ -238,7 +216,8 @@ int snd_cs8427_create(struct snd_i2c_bus *bus,
goto __fail;
/* send initial values */
memcpy(chip->regmap + (initvals1[0] & 0x7f), initvals1 + 1, 6);
- if ((err = snd_i2c_sendbytes(device, initvals1, 7)) != 7) {
+ err = snd_i2c_sendbytes(device, initvals1, 7);
+ if (err != 7) {
err = err < 0 ? err : -EIO;
goto __fail;
}
@@ -246,11 +225,13 @@ int snd_cs8427_create(struct snd_i2c_bus *bus,
memset(buf, 0, 7);
/* from address 9 to 15 */
buf[0] = 9; /* register */
- if ((err = snd_i2c_sendbytes(device, buf, 7)) != 7)
+ err = snd_i2c_sendbytes(device, buf, 7);
+ if (err != 7)
goto __fail;
/* send transfer initialization sequence */
memcpy(chip->regmap + (initvals2[0] & 0x7f), initvals2 + 1, 3);
- if ((err = snd_i2c_sendbytes(device, initvals2, 4)) != 4) {
+ err = snd_i2c_sendbytes(device, initvals2, 4);
+ if (err != 4) {
err = err < 0 ? err : -EIO;
goto __fail;
}
@@ -264,10 +245,44 @@ int snd_cs8427_create(struct snd_i2c_bus *bus,
snd_i2c_unlock(bus);
/* turn on run bit and rock'n'roll */
+ snd_cs8427_reset(device);
+
+ return 0;
+
+__fail:
+ snd_i2c_unlock(bus);
+
+ return err;
+}
+EXPORT_SYMBOL(snd_cs8427_init);
+
+int snd_cs8427_create(struct snd_i2c_bus *bus,
+ unsigned char addr,
+ unsigned int reset_timeout,
+ struct snd_i2c_device **r_cs8427)
+{
+ int err;
+ struct cs8427 *chip;
+ struct snd_i2c_device *device;
+
+ err = snd_i2c_device_create(bus, "CS8427", CS8427_ADDR | (addr & 7),
+ &device);
+ if (err < 0)
+ return err;
+ chip = device->private_data = kzalloc(sizeof(*chip), GFP_KERNEL);
+ if (chip == NULL) {
+ snd_i2c_device_free(device);
+ return -ENOMEM;
+ }
+ device->private_free = snd_cs8427_free;
+
if (reset_timeout < 1)
reset_timeout = 1;
chip->reset_timeout = reset_timeout;
- snd_cs8427_reset(device);
+
+ err = snd_cs8427_init(bus, device);
+ if (err)
+ goto __fail;
#if 0 // it's nice for read tests
{
@@ -277,7 +292,7 @@ int snd_cs8427_create(struct snd_i2c_bus *bus,
snd_i2c_sendbytes(device, buf, 1);
snd_i2c_readbytes(device, buf, 127);
for (xx = 0; xx < 127; xx++)
- printk(KERN_DEBUG "reg[0x%x] = 0x%x\n", xx+1, buf[xx]);
+ dev_dbg(device->bus->card->dev, "reg[0x%x] = 0x%x\n", xx+1, buf[xx]);
}
#endif
@@ -286,7 +301,6 @@ int snd_cs8427_create(struct snd_i2c_bus *bus,
return 0;
__fail:
- snd_i2c_unlock(bus);
snd_i2c_device_free(device);
return err < 0 ? err : -EIO;
}
@@ -379,16 +393,17 @@ static int snd_cs8427_qsubcode_get(struct snd_kcontrol *kcontrol,
int err;
snd_i2c_lock(device->bus);
- if ((err = snd_i2c_sendbytes(device, &reg, 1)) != 1) {
- snd_printk(KERN_ERR "unable to send register 0x%x byte "
- "to CS8427\n", reg);
+ err = snd_i2c_sendbytes(device, &reg, 1);
+ if (err != 1) {
+ dev_err(device->bus->card->dev,
+ "unable to send register 0x%x byte to CS8427\n", reg);
snd_i2c_unlock(device->bus);
return err < 0 ? err : -EIO;
}
err = snd_i2c_readbytes(device, ucontrol->value.bytes.data, 10);
if (err != 10) {
- snd_printk(KERN_ERR "unable to read Q-subcode bytes "
- "from CS8427\n");
+ dev_err(device->bus->card->dev,
+ "unable to read Q-subcode bytes from CS8427\n");
snd_i2c_unlock(device->bus);
return err < 0 ? err : -EIO;
}
@@ -455,7 +470,7 @@ static int snd_cs8427_spdif_mask_get(struct snd_kcontrol *kcontrol,
return 0;
}
-static struct snd_kcontrol_new snd_cs8427_iec958_controls[] = {
+static const struct snd_kcontrol_new snd_cs8427_iec958_controls[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.info = snd_cs8427_in_status_info,
@@ -549,10 +564,13 @@ int snd_cs8427_iec958_active(struct snd_i2c_device *cs8427, int active)
if (snd_BUG_ON(!cs8427))
return -ENXIO;
chip = cs8427->private_data;
- if (active)
+ if (active) {
memcpy(chip->playback.pcm_status,
chip->playback.def_status, 24);
- chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ } else {
+ chip->playback.pcm_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ }
snd_ctl_notify(cs8427->bus->card,
SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO,
&chip->playback.pcm_ctl->id);
@@ -602,15 +620,3 @@ int snd_cs8427_iec958_pcm(struct snd_i2c_device *cs8427, unsigned int rate)
}
EXPORT_SYMBOL(snd_cs8427_iec958_pcm);
-
-static int __init alsa_cs8427_module_init(void)
-{
- return 0;
-}
-
-static void __exit alsa_cs8427_module_exit(void)
-{
-}
-
-module_init(alsa_cs8427_module_init)
-module_exit(alsa_cs8427_module_exit)
generated by cgit (git 2.34.1) at 2025-12-25 04:26:59 +0000