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Diffstat (limited to 'sound/soc/codecs/wm2000.c')
-rw-r--r--sound/soc/codecs/wm2000.c227
1 files changed, 102 insertions, 125 deletions
diff --git a/sound/soc/codecs/wm2000.c b/sound/soc/codecs/wm2000.c
index a3b9cbb..c288090 100644
--- a/sound/soc/codecs/wm2000.c
+++ b/sound/soc/codecs/wm2000.c
@@ -29,7 +29,7 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
-#include <linux/platform_device.h>
+#include <linux/regmap.h>
#include <linux/debugfs.h>
#include <linux/slab.h>
#include <sound/core.h>
@@ -52,6 +52,7 @@ enum wm2000_anc_mode {
struct wm2000_priv {
struct i2c_client *i2c;
+ struct regmap *regmap;
enum wm2000_anc_mode anc_mode;
@@ -66,59 +67,24 @@ struct wm2000_priv {
char *anc_download;
};
-static struct i2c_client *wm2000_i2c;
-
static int wm2000_write(struct i2c_client *i2c, unsigned int reg,
unsigned int value)
{
- u8 data[3];
- int ret;
-
- data[0] = (reg >> 8) & 0xff;
- data[1] = reg & 0xff;
- data[2] = value & 0xff;
-
- dev_vdbg(&i2c->dev, "write %x = %x\n", reg, value);
-
- ret = i2c_master_send(i2c, data, 3);
- if (ret == 3)
- return 0;
- if (ret < 0)
- return ret;
- else
- return -EIO;
+ struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c);
+ return regmap_write(wm2000->regmap, reg, value);
}
static unsigned int wm2000_read(struct i2c_client *i2c, unsigned int r)
{
- struct i2c_msg xfer[2];
- u8 reg[2];
- u8 data;
+ struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c);
+ unsigned int val;
int ret;
- /* Write register */
- reg[0] = (r >> 8) & 0xff;
- reg[1] = r & 0xff;
- xfer[0].addr = i2c->addr;
- xfer[0].flags = 0;
- xfer[0].len = sizeof(reg);
- xfer[0].buf = &reg[0];
-
- /* Read data */
- xfer[1].addr = i2c->addr;
- xfer[1].flags = I2C_M_RD;
- xfer[1].len = 1;
- xfer[1].buf = &data;
-
- ret = i2c_transfer(i2c->adapter, xfer, 2);
- if (ret != 2) {
- dev_err(&i2c->dev, "i2c_transfer() returned %d\n", ret);
- return 0;
- }
-
- dev_vdbg(&i2c->dev, "read %x from %x\n", data, r);
+ ret = regmap_read(wm2000->regmap, r, &val);
+ if (ret < 0)
+ return -1;
- return data;
+ return val;
}
static void wm2000_reset(struct wm2000_priv *wm2000)
@@ -612,7 +578,8 @@ static int wm2000_anc_set_mode(struct wm2000_priv *wm2000)
static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
ucontrol->value.enumerated.item[0] = wm2000->anc_active;
@@ -622,7 +589,8 @@ static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol,
static int wm2000_anc_mode_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
int anc_active = ucontrol->value.enumerated.item[0];
if (anc_active > 1)
@@ -636,7 +604,8 @@ static int wm2000_anc_mode_put(struct snd_kcontrol *kcontrol,
static int wm2000_speaker_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
ucontrol->value.enumerated.item[0] = wm2000->spk_ena;
@@ -646,7 +615,8 @@ static int wm2000_speaker_get(struct snd_kcontrol *kcontrol,
static int wm2000_speaker_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
int val = ucontrol->value.enumerated.item[0];
if (val > 1)
@@ -669,7 +639,8 @@ static const struct snd_kcontrol_new wm2000_controls[] = {
static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&wm2000_i2c->dev);
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
if (SND_SOC_DAPM_EVENT_ON(event))
wm2000->anc_eng_ena = 1;
@@ -682,11 +653,11 @@ static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w,
static const struct snd_soc_dapm_widget wm2000_dapm_widgets[] = {
/* Externally visible pins */
-SND_SOC_DAPM_OUTPUT("WM2000 SPKN"),
-SND_SOC_DAPM_OUTPUT("WM2000 SPKP"),
+SND_SOC_DAPM_OUTPUT("SPKN"),
+SND_SOC_DAPM_OUTPUT("SPKP"),
-SND_SOC_DAPM_INPUT("WM2000 LINN"),
-SND_SOC_DAPM_INPUT("WM2000 LINP"),
+SND_SOC_DAPM_INPUT("LINN"),
+SND_SOC_DAPM_INPUT("LINP"),
SND_SOC_DAPM_PGA_E("ANC Engine", SND_SOC_NOPM, 0, 0, NULL, 0,
wm2000_anc_power_event,
@@ -694,37 +665,67 @@ SND_SOC_DAPM_PGA_E("ANC Engine", SND_SOC_NOPM, 0, 0, NULL, 0,
};
/* Target, Path, Source */
-static const struct snd_soc_dapm_route audio_map[] = {
- { "WM2000 SPKN", NULL, "ANC Engine" },
- { "WM2000 SPKP", NULL, "ANC Engine" },
- { "ANC Engine", NULL, "WM2000 LINN" },
- { "ANC Engine", NULL, "WM2000 LINP" },
+static const struct snd_soc_dapm_route wm2000_audio_map[] = {
+ { "SPKN", NULL, "ANC Engine" },
+ { "SPKP", NULL, "ANC Engine" },
+ { "ANC Engine", NULL, "LINN" },
+ { "ANC Engine", NULL, "LINP" },
};
-/* Called from the machine driver */
-int wm2000_add_controls(struct snd_soc_codec *codec)
+#ifdef CONFIG_PM
+static int wm2000_suspend(struct snd_soc_codec *codec)
{
- struct snd_soc_dapm_context *dapm = &codec->dapm;
- int ret;
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
- if (!wm2000_i2c) {
- pr_err("WM2000 not yet probed\n");
- return -ENODEV;
- }
+ return wm2000_anc_transition(wm2000, ANC_OFF);
+}
- ret = snd_soc_dapm_new_controls(dapm, wm2000_dapm_widgets,
- ARRAY_SIZE(wm2000_dapm_widgets));
- if (ret < 0)
- return ret;
+static int wm2000_resume(struct snd_soc_codec *codec)
+{
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
- ret = snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
- if (ret < 0)
- return ret;
+ return wm2000_anc_set_mode(wm2000);
+}
+#else
+#define wm2000_suspend NULL
+#define wm2000_resume NULL
+#endif
+
+static const struct regmap_config wm2000_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static int wm2000_probe(struct snd_soc_codec *codec)
+{
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
+
+ /* This will trigger a transition to standby mode by default */
+ wm2000_anc_set_mode(wm2000);
+
+ return 0;
+}
+
+static int wm2000_remove(struct snd_soc_codec *codec)
+{
+ struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev);
- return snd_soc_add_controls(codec, wm2000_controls,
- ARRAY_SIZE(wm2000_controls));
+ return wm2000_anc_transition(wm2000, ANC_OFF);
}
-EXPORT_SYMBOL_GPL(wm2000_add_controls);
+
+static struct snd_soc_codec_driver soc_codec_dev_wm2000 = {
+ .probe = wm2000_probe,
+ .remove = wm2000_remove,
+ .suspend = wm2000_suspend,
+ .resume = wm2000_resume,
+
+ .dapm_widgets = wm2000_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(wm2000_dapm_widgets),
+ .dapm_routes = wm2000_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(wm2000_audio_map),
+ .controls = wm2000_controls,
+ .num_controls = ARRAY_SIZE(wm2000_controls),
+};
static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *i2c_id)
@@ -736,17 +737,23 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
int reg, ret;
u16 id;
- if (wm2000_i2c) {
- dev_err(&i2c->dev, "Another WM2000 is already registered\n");
- return -EINVAL;
- }
-
- wm2000 = kzalloc(sizeof(struct wm2000_priv), GFP_KERNEL);
+ wm2000 = devm_kzalloc(&i2c->dev, sizeof(struct wm2000_priv),
+ GFP_KERNEL);
if (wm2000 == NULL) {
dev_err(&i2c->dev, "Unable to allocate private data\n");
return -ENOMEM;
}
+ dev_set_drvdata(&i2c->dev, wm2000);
+
+ wm2000->regmap = regmap_init_i2c(i2c, &wm2000_regmap);
+ if (IS_ERR(wm2000->regmap)) {
+ ret = PTR_ERR(wm2000->regmap);
+ dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
+ ret);
+ goto err;
+ }
+
/* Verify that this is a WM2000 */
reg = wm2000_read(i2c, WM2000_REG_ID1);
id = reg << 8;
@@ -756,7 +763,7 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
if (id != 0x2000) {
dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id);
ret = -ENODEV;
- goto err;
+ goto err_regmap;
}
reg = wm2000_read(i2c, WM2000_REG_REVISON);
@@ -775,12 +782,14 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
ret = request_firmware(&fw, filename, &i2c->dev);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to acquire ANC data: %d\n", ret);
- goto err;
+ goto err_regmap;
}
/* Pre-cook the concatenation of the register address onto the image */
wm2000->anc_download_size = fw->size + 2;
- wm2000->anc_download = kmalloc(wm2000->anc_download_size, GFP_KERNEL);
+ wm2000->anc_download = devm_kzalloc(&i2c->dev,
+ wm2000->anc_download_size,
+ GFP_KERNEL);
if (wm2000->anc_download == NULL) {
dev_err(&i2c->dev, "Out of memory\n");
ret = -ENOMEM;
@@ -793,7 +802,6 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
release_firmware(fw);
- dev_set_drvdata(&i2c->dev, wm2000);
wm2000->anc_eng_ena = 1;
wm2000->anc_active = 1;
wm2000->spk_ena = 1;
@@ -801,17 +809,18 @@ static int __devinit wm2000_i2c_probe(struct i2c_client *i2c,
wm2000_reset(wm2000);
- /* This will trigger a transition to standby mode by default */
- wm2000_anc_set_mode(wm2000);
-
- wm2000_i2c = i2c;
+ ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm2000,
+ NULL, 0);
+ if (ret != 0)
+ goto err_fw;
return 0;
err_fw:
release_firmware(fw);
+err_regmap:
+ regmap_exit(wm2000->regmap);
err:
- kfree(wm2000);
return ret;
}
@@ -819,42 +828,12 @@ static __devexit int wm2000_i2c_remove(struct i2c_client *i2c)
{
struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
- wm2000_anc_transition(wm2000, ANC_OFF);
-
- wm2000_i2c = NULL;
- kfree(wm2000->anc_download);
- kfree(wm2000);
+ snd_soc_unregister_codec(&i2c->dev);
+ regmap_exit(wm2000->regmap);
return 0;
}
-static void wm2000_i2c_shutdown(struct i2c_client *i2c)
-{
- struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
-
- wm2000_anc_transition(wm2000, ANC_OFF);
-}
-
-#ifdef CONFIG_PM
-static int wm2000_i2c_suspend(struct device *dev)
-{
- struct i2c_client *i2c = to_i2c_client(dev);
- struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
-
- return wm2000_anc_transition(wm2000, ANC_OFF);
-}
-
-static int wm2000_i2c_resume(struct device *dev)
-{
- struct i2c_client *i2c = to_i2c_client(dev);
- struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
-
- return wm2000_anc_set_mode(wm2000);
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(wm2000_pm, wm2000_i2c_suspend, wm2000_i2c_resume);
-
static const struct i2c_device_id wm2000_i2c_id[] = {
{ "wm2000", 0 },
{ }
@@ -865,11 +844,9 @@ static struct i2c_driver wm2000_i2c_driver = {
.driver = {
.name = "wm2000",
.owner = THIS_MODULE,
- .pm = &wm2000_pm,
},
.probe = wm2000_i2c_probe,
.remove = __devexit_p(wm2000_i2c_remove),
- .shutdown = wm2000_i2c_shutdown,
.id_table = wm2000_i2c_id,
};
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