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Diffstat (limited to 'sound/soc/codecs/wm8741.c')
-rw-r--r--sound/soc/codecs/wm8741.c115
1 files changed, 80 insertions, 35 deletions
diff --git a/sound/soc/codecs/wm8741.c b/sound/soc/codecs/wm8741.c
index 35f3d23200e0..4281a0802138 100644
--- a/sound/soc/codecs/wm8741.c
+++ b/sound/soc/codecs/wm8741.c
@@ -18,6 +18,7 @@
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
+#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/of_device.h>
@@ -40,26 +41,43 @@ static const char *wm8741_supply_names[WM8741_NUM_SUPPLIES] = {
/* codec private data */
struct wm8741_priv {
- enum snd_soc_control_type control_type;
+ struct regmap *regmap;
struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES];
unsigned int sysclk;
struct snd_pcm_hw_constraint_list *sysclk_constraints;
};
-static const u16 wm8741_reg_defaults[WM8741_REGISTER_COUNT] = {
- 0x0000, /* R0 - DACLLSB Attenuation */
- 0x0000, /* R1 - DACLMSB Attenuation */
- 0x0000, /* R2 - DACRLSB Attenuation */
- 0x0000, /* R3 - DACRMSB Attenuation */
- 0x0000, /* R4 - Volume Control */
- 0x000A, /* R5 - Format Control */
- 0x0000, /* R6 - Filter Control */
- 0x0000, /* R7 - Mode Control 1 */
- 0x0002, /* R8 - Mode Control 2 */
- 0x0000, /* R9 - Reset */
- 0x0002, /* R32 - ADDITONAL_CONTROL_1 */
+static const struct reg_default wm8741_reg_defaults[] = {
+ { 0, 0x0000 }, /* R0 - DACLLSB Attenuation */
+ { 1, 0x0000 }, /* R1 - DACLMSB Attenuation */
+ { 2, 0x0000 }, /* R2 - DACRLSB Attenuation */
+ { 3, 0x0000 }, /* R3 - DACRMSB Attenuation */
+ { 4, 0x0000 }, /* R4 - Volume Control */
+ { 5, 0x000A }, /* R5 - Format Control */
+ { 6, 0x0000 }, /* R6 - Filter Control */
+ { 7, 0x0000 }, /* R7 - Mode Control 1 */
+ { 8, 0x0002 }, /* R8 - Mode Control 2 */
+ { 32, 0x0002 }, /* R32 - ADDITONAL_CONTROL_1 */
};
+static bool wm8741_readable(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case WM8741_DACLLSB_ATTENUATION:
+ case WM8741_DACLMSB_ATTENUATION:
+ case WM8741_DACRLSB_ATTENUATION:
+ case WM8741_DACRMSB_ATTENUATION:
+ case WM8741_VOLUME_CONTROL:
+ case WM8741_FORMAT_CONTROL:
+ case WM8741_FILTER_CONTROL:
+ case WM8741_MODE_CONTROL_1:
+ case WM8741_MODE_CONTROL_2:
+ case WM8741_ADDITIONAL_CONTROL_1:
+ return true;
+ default:
+ return false;
+ }
+}
static int wm8741_reset(struct snd_soc_codec *codec)
{
@@ -403,17 +421,6 @@ static int wm8741_probe(struct snd_soc_codec *codec)
{
struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
int ret = 0;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++)
- wm8741->supplies[i].supply = wm8741_supply_names[i];
-
- ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8741->supplies),
- wm8741->supplies);
- if (ret != 0) {
- dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
- goto err;
- }
ret = regulator_bulk_enable(ARRAY_SIZE(wm8741->supplies),
wm8741->supplies);
@@ -422,7 +429,7 @@ static int wm8741_probe(struct snd_soc_codec *codec)
goto err_get;
}
- ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8741->control_type);
+ ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
if (ret != 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
goto err_enable;
@@ -450,8 +457,6 @@ static int wm8741_probe(struct snd_soc_codec *codec)
err_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
err_get:
- regulator_bulk_free(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
-err:
return ret;
}
@@ -460,7 +465,6 @@ static int wm8741_remove(struct snd_soc_codec *codec)
struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
- regulator_bulk_free(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
return 0;
}
@@ -469,9 +473,6 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8741 = {
.probe = wm8741_probe,
.remove = wm8741_remove,
.resume = wm8741_resume,
- .reg_cache_size = ARRAY_SIZE(wm8741_reg_defaults),
- .reg_word_size = sizeof(u16),
- .reg_cache_default = wm8741_reg_defaults,
.controls = wm8741_snd_controls,
.num_controls = ARRAY_SIZE(wm8741_snd_controls),
@@ -487,20 +488,48 @@ static const struct of_device_id wm8741_of_match[] = {
};
MODULE_DEVICE_TABLE(of, wm8741_of_match);
+static const struct regmap_config wm8741_regmap = {
+ .reg_bits = 7,
+ .val_bits = 9,
+ .max_register = WM8741_MAX_REGISTER,
+
+ .reg_defaults = wm8741_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(wm8741_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+
+ .readable_reg = wm8741_readable,
+};
+
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static int wm8741_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8741_priv *wm8741;
- int ret;
+ int ret, i;
wm8741 = devm_kzalloc(&i2c->dev, sizeof(struct wm8741_priv),
GFP_KERNEL);
if (wm8741 == NULL)
return -ENOMEM;
+ for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++)
+ wm8741->supplies[i].supply = wm8741_supply_names[i];
+
+ ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8741->supplies),
+ wm8741->supplies);
+ if (ret != 0) {
+ dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
+ return ret;
+ }
+
+ wm8741->regmap = regmap_init_i2c(i2c, &wm8741_regmap);
+ if (IS_ERR(wm8741->regmap)) {
+ ret = PTR_ERR(wm8741->regmap);
+ dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
+ return ret;
+ }
+
i2c_set_clientdata(i2c, wm8741);
- wm8741->control_type = SND_SOC_I2C;
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8741, &wm8741_dai, 1);
@@ -536,14 +565,30 @@ static struct i2c_driver wm8741_i2c_driver = {
static int __devinit wm8741_spi_probe(struct spi_device *spi)
{
struct wm8741_priv *wm8741;
- int ret;
+ int ret, i;
wm8741 = devm_kzalloc(&spi->dev, sizeof(struct wm8741_priv),
GFP_KERNEL);
if (wm8741 == NULL)
return -ENOMEM;
- wm8741->control_type = SND_SOC_SPI;
+ for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++)
+ wm8741->supplies[i].supply = wm8741_supply_names[i];
+
+ ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8741->supplies),
+ wm8741->supplies);
+ if (ret != 0) {
+ dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);
+ return ret;
+ }
+
+ wm8741->regmap = regmap_init_spi(spi, &wm8741_regmap);
+ if (IS_ERR(wm8741->regmap)) {
+ ret = PTR_ERR(wm8741->regmap);
+ dev_err(&spi->dev, "Failed to init regmap: %d\n", ret);
+ return ret;
+ }
+
spi_set_drvdata(spi, wm8741);
ret = snd_soc_register_codec(&spi->dev,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.