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Diffstat (limited to 'sound/soc/codecs/wm8978.c')
-rw-r--r--sound/soc/codecs/wm8978.c287
1 files changed, 155 insertions, 132 deletions
diff --git a/sound/soc/codecs/wm8978.c b/sound/soc/codecs/wm8978.c
index 13b979a71a7..28ef46c91f6 100644
--- a/sound/soc/codecs/wm8978.c
+++ b/sound/soc/codecs/wm8978.c
@@ -18,49 +18,92 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
-#include <linux/platform_device.h>
+#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
-#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <asm/div64.h>
#include "wm8978.h"
-/* wm8978 register cache. Note that register 0 is not included in the cache. */
-static const u16 wm8978_reg[WM8978_CACHEREGNUM] = {
- 0x0000, 0x0000, 0x0000, 0x0000, /* 0x00...0x03 */
- 0x0050, 0x0000, 0x0140, 0x0000, /* 0x04...0x07 */
- 0x0000, 0x0000, 0x0000, 0x00ff, /* 0x08...0x0b */
- 0x00ff, 0x0000, 0x0100, 0x00ff, /* 0x0c...0x0f */
- 0x00ff, 0x0000, 0x012c, 0x002c, /* 0x10...0x13 */
- 0x002c, 0x002c, 0x002c, 0x0000, /* 0x14...0x17 */
- 0x0032, 0x0000, 0x0000, 0x0000, /* 0x18...0x1b */
- 0x0000, 0x0000, 0x0000, 0x0000, /* 0x1c...0x1f */
- 0x0038, 0x000b, 0x0032, 0x0000, /* 0x20...0x23 */
- 0x0008, 0x000c, 0x0093, 0x00e9, /* 0x24...0x27 */
- 0x0000, 0x0000, 0x0000, 0x0000, /* 0x28...0x2b */
- 0x0033, 0x0010, 0x0010, 0x0100, /* 0x2c...0x2f */
- 0x0100, 0x0002, 0x0001, 0x0001, /* 0x30...0x33 */
- 0x0039, 0x0039, 0x0039, 0x0039, /* 0x34...0x37 */
- 0x0001, 0x0001, /* 0x38...0x3b */
+static const struct reg_default wm8978_reg_defaults[] = {
+ { 1, 0x0000 },
+ { 2, 0x0000 },
+ { 3, 0x0000 },
+ { 4, 0x0050 },
+ { 5, 0x0000 },
+ { 6, 0x0140 },
+ { 7, 0x0000 },
+ { 8, 0x0000 },
+ { 9, 0x0000 },
+ { 10, 0x0000 },
+ { 11, 0x00ff },
+ { 12, 0x00ff },
+ { 13, 0x0000 },
+ { 14, 0x0100 },
+ { 15, 0x00ff },
+ { 16, 0x00ff },
+ { 17, 0x0000 },
+ { 18, 0x012c },
+ { 19, 0x002c },
+ { 20, 0x002c },
+ { 21, 0x002c },
+ { 22, 0x002c },
+ { 23, 0x0000 },
+ { 24, 0x0032 },
+ { 25, 0x0000 },
+ { 26, 0x0000 },
+ { 27, 0x0000 },
+ { 28, 0x0000 },
+ { 29, 0x0000 },
+ { 30, 0x0000 },
+ { 31, 0x0000 },
+ { 32, 0x0038 },
+ { 33, 0x000b },
+ { 34, 0x0032 },
+ { 35, 0x0000 },
+ { 36, 0x0008 },
+ { 37, 0x000c },
+ { 38, 0x0093 },
+ { 39, 0x00e9 },
+ { 40, 0x0000 },
+ { 41, 0x0000 },
+ { 42, 0x0000 },
+ { 43, 0x0000 },
+ { 44, 0x0033 },
+ { 45, 0x0010 },
+ { 46, 0x0010 },
+ { 47, 0x0100 },
+ { 48, 0x0100 },
+ { 49, 0x0002 },
+ { 50, 0x0001 },
+ { 51, 0x0001 },
+ { 52, 0x0039 },
+ { 53, 0x0039 },
+ { 54, 0x0039 },
+ { 55, 0x0039 },
+ { 56, 0x0001 },
+ { 57, 0x0001 },
};
+static bool wm8978_volatile(struct device *dev, unsigned int reg)
+{
+ return reg == WM8978_RESET;
+}
+
/* codec private data */
struct wm8978_priv {
- enum snd_soc_control_type control_type;
- void *control_data;
+ struct regmap *regmap;
unsigned int f_pllout;
unsigned int f_mclk;
unsigned int f_256fs;
unsigned int f_opclk;
int mclk_idx;
enum wm8978_sysclk_src sysclk;
- u16 reg_cache[WM8978_CACHEREGNUM];
};
static const char *wm8978_companding[] = {"Off", "NC", "u-law", "A-law"};
@@ -74,27 +117,28 @@ static const char *wm8978_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz"};
static const char *wm8978_alc3[] = {"ALC", "Limiter"};
static const char *wm8978_alc1[] = {"Off", "Right", "Left", "Both"};
-static const SOC_ENUM_SINGLE_DECL(adc_compand, WM8978_COMPANDING_CONTROL, 1,
- wm8978_companding);
-static const SOC_ENUM_SINGLE_DECL(dac_compand, WM8978_COMPANDING_CONTROL, 3,
- wm8978_companding);
-static const SOC_ENUM_SINGLE_DECL(eqmode, WM8978_EQ1, 8, wm8978_eqmode);
-static const SOC_ENUM_SINGLE_DECL(eq1, WM8978_EQ1, 5, wm8978_eq1);
-static const SOC_ENUM_SINGLE_DECL(eq2bw, WM8978_EQ2, 8, wm8978_bw);
-static const SOC_ENUM_SINGLE_DECL(eq2, WM8978_EQ2, 5, wm8978_eq2);
-static const SOC_ENUM_SINGLE_DECL(eq3bw, WM8978_EQ3, 8, wm8978_bw);
-static const SOC_ENUM_SINGLE_DECL(eq3, WM8978_EQ3, 5, wm8978_eq3);
-static const SOC_ENUM_SINGLE_DECL(eq4bw, WM8978_EQ4, 8, wm8978_bw);
-static const SOC_ENUM_SINGLE_DECL(eq4, WM8978_EQ4, 5, wm8978_eq4);
-static const SOC_ENUM_SINGLE_DECL(eq5, WM8978_EQ5, 5, wm8978_eq5);
-static const SOC_ENUM_SINGLE_DECL(alc3, WM8978_ALC_CONTROL_3, 8, wm8978_alc3);
-static const SOC_ENUM_SINGLE_DECL(alc1, WM8978_ALC_CONTROL_1, 7, wm8978_alc1);
+static SOC_ENUM_SINGLE_DECL(adc_compand, WM8978_COMPANDING_CONTROL, 1,
+ wm8978_companding);
+static SOC_ENUM_SINGLE_DECL(dac_compand, WM8978_COMPANDING_CONTROL, 3,
+ wm8978_companding);
+static SOC_ENUM_SINGLE_DECL(eqmode, WM8978_EQ1, 8, wm8978_eqmode);
+static SOC_ENUM_SINGLE_DECL(eq1, WM8978_EQ1, 5, wm8978_eq1);
+static SOC_ENUM_SINGLE_DECL(eq2bw, WM8978_EQ2, 8, wm8978_bw);
+static SOC_ENUM_SINGLE_DECL(eq2, WM8978_EQ2, 5, wm8978_eq2);
+static SOC_ENUM_SINGLE_DECL(eq3bw, WM8978_EQ3, 8, wm8978_bw);
+static SOC_ENUM_SINGLE_DECL(eq3, WM8978_EQ3, 5, wm8978_eq3);
+static SOC_ENUM_SINGLE_DECL(eq4bw, WM8978_EQ4, 8, wm8978_bw);
+static SOC_ENUM_SINGLE_DECL(eq4, WM8978_EQ4, 5, wm8978_eq4);
+static SOC_ENUM_SINGLE_DECL(eq5, WM8978_EQ5, 5, wm8978_eq5);
+static SOC_ENUM_SINGLE_DECL(alc3, WM8978_ALC_CONTROL_3, 8, wm8978_alc3);
+static SOC_ENUM_SINGLE_DECL(alc1, WM8978_ALC_CONTROL_1, 7, wm8978_alc1);
static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0);
static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0);
static const DECLARE_TLV_DB_SCALE(boost_tlv, -1500, 300, 1);
+static const DECLARE_TLV_DB_SCALE(limiter_tlv, 0, 100, 0);
static const struct snd_kcontrol_new wm8978_snd_controls[] = {
@@ -122,15 +166,15 @@ static const struct snd_kcontrol_new wm8978_snd_controls[] = {
SOC_ENUM("EQ1 Cut Off", eq1),
SOC_SINGLE_TLV("EQ1 Volume", WM8978_EQ1, 0, 24, 1, eq_tlv),
- SOC_ENUM("Equaliser EQ2 Bandwith", eq2bw),
+ SOC_ENUM("Equaliser EQ2 Bandwidth", eq2bw),
SOC_ENUM("EQ2 Cut Off", eq2),
SOC_SINGLE_TLV("EQ2 Volume", WM8978_EQ2, 0, 24, 1, eq_tlv),
- SOC_ENUM("Equaliser EQ3 Bandwith", eq3bw),
+ SOC_ENUM("Equaliser EQ3 Bandwidth", eq3bw),
SOC_ENUM("EQ3 Cut Off", eq3),
SOC_SINGLE_TLV("EQ3 Volume", WM8978_EQ3, 0, 24, 1, eq_tlv),
- SOC_ENUM("Equaliser EQ4 Bandwith", eq4bw),
+ SOC_ENUM("Equaliser EQ4 Bandwidth", eq4bw),
SOC_ENUM("EQ4 Cut Off", eq4),
SOC_SINGLE_TLV("EQ4 Volume", WM8978_EQ4, 0, 24, 1, eq_tlv),
@@ -146,19 +190,19 @@ static const struct snd_kcontrol_new wm8978_snd_controls[] = {
SOC_SINGLE("DAC Playback Limiter Threshold",
WM8978_DAC_LIMITER_2, 4, 7, 0),
- SOC_SINGLE("DAC Playback Limiter Boost",
- WM8978_DAC_LIMITER_2, 0, 15, 0),
+ SOC_SINGLE_TLV("DAC Playback Limiter Volume",
+ WM8978_DAC_LIMITER_2, 0, 12, 0, limiter_tlv),
SOC_ENUM("ALC Enable Switch", alc1),
SOC_SINGLE("ALC Capture Min Gain", WM8978_ALC_CONTROL_1, 0, 7, 0),
SOC_SINGLE("ALC Capture Max Gain", WM8978_ALC_CONTROL_1, 3, 7, 0),
- SOC_SINGLE("ALC Capture Hold", WM8978_ALC_CONTROL_2, 4, 7, 0),
+ SOC_SINGLE("ALC Capture Hold", WM8978_ALC_CONTROL_2, 4, 10, 0),
SOC_SINGLE("ALC Capture Target", WM8978_ALC_CONTROL_2, 0, 15, 0),
SOC_ENUM("ALC Capture Mode", alc3),
- SOC_SINGLE("ALC Capture Decay", WM8978_ALC_CONTROL_3, 4, 15, 0),
- SOC_SINGLE("ALC Capture Attack", WM8978_ALC_CONTROL_3, 0, 15, 0),
+ SOC_SINGLE("ALC Capture Decay", WM8978_ALC_CONTROL_3, 4, 10, 0),
+ SOC_SINGLE("ALC Capture Attack", WM8978_ALC_CONTROL_3, 0, 10, 0),
SOC_SINGLE("ALC Capture Noise Gate Switch", WM8978_NOISE_GATE, 3, 1, 0),
SOC_SINGLE("ALC Capture Noise Gate Threshold",
@@ -213,8 +257,10 @@ static const struct snd_kcontrol_new wm8978_snd_controls[] = {
WM8978_LOUT2_SPK_CONTROL, WM8978_ROUT2_SPK_CONTROL, 6, 1, 1),
/* DAC / ADC oversampling */
- SOC_SINGLE("DAC 128x Oversampling Switch", WM8978_DAC_CONTROL, 8, 1, 0),
- SOC_SINGLE("ADC 128x Oversampling Switch", WM8978_ADC_CONTROL, 8, 1, 0),
+ SOC_SINGLE("DAC 128x Oversampling Switch", WM8978_DAC_CONTROL,
+ 5, 1, 0),
+ SOC_SINGLE("ADC 128x Oversampling Switch", WM8978_ADC_CONTROL,
+ 5, 1, 0),
};
/* Mixer #1: Output (OUT1, OUT2) Mixer: mix AUX, Input mixer output and DAC */
@@ -304,7 +350,7 @@ static const struct snd_soc_dapm_widget wm8978_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("RSPK"),
};
-static const struct snd_soc_dapm_route audio_map[] = {
+static const struct snd_soc_dapm_route wm8978_dapm_routes[] = {
/* Output mixer */
{"Right Output Mixer", "PCM Playback Switch", "Right DAC"},
{"Right Output Mixer", "Aux Playback Switch", "RAUX"},
@@ -353,17 +399,6 @@ static const struct snd_soc_dapm_route audio_map[] = {
{"Left Input Mixer", "MicP Switch", "LMICP"},
};
-static int wm8978_add_widgets(struct snd_soc_codec *codec)
-{
- snd_soc_dapm_new_controls(codec, wm8978_dapm_widgets,
- ARRAY_SIZE(wm8978_dapm_widgets));
-
- /* set up the WM8978 audio map */
- snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
-
- return 0;
-}
-
/* PLL divisors */
struct wm8978_pll_div {
u32 k;
@@ -492,9 +527,6 @@ static int wm8978_configure_pll(struct snd_soc_codec *codec)
return idx;
wm8978->mclk_idx = idx;
-
- /* GPIO1 into default mode as input - before configuring PLL */
- snd_soc_update_bits(codec, WM8978_GPIO_CONTROL, 7, 0);
} else {
return -EINVAL;
}
@@ -688,8 +720,7 @@ static int wm8978_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_codec *codec = dai->codec;
struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec);
/* Word length mask = 0x60 */
u16 iface_ctl = snd_soc_read(codec, WM8978_AUDIO_INTERFACE) & ~0x60;
@@ -748,7 +779,7 @@ static int wm8978_hw_params(struct snd_pcm_substream *substream,
wm8978->mclk_idx = -1;
f_sel = wm8978->f_mclk;
} else {
- if (!wm8978->f_pllout) {
+ if (!wm8978->f_opclk) {
/* We only enter here, if OPCLK is not used */
int ret = wm8978_configure_pll(codec);
if (ret < 0)
@@ -837,7 +868,7 @@ static int wm8978_set_bias_level(struct snd_soc_codec *codec,
/* bit 3: enable bias, bit 2: enable I/O tie off buffer */
power1 |= 0xc;
- if (codec->bias_level == SND_SOC_BIAS_OFF) {
+ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
/* Initial cap charge at VMID 5k */
snd_soc_write(codec, WM8978_POWER_MANAGEMENT_1,
power1 | 0x3);
@@ -857,14 +888,14 @@ static int wm8978_set_bias_level(struct snd_soc_codec *codec,
dev_dbg(codec->dev, "%s: %d, %x\n", __func__, level, power1);
- codec->bias_level = level;
+ codec->dapm.bias_level = level;
return 0;
}
#define WM8978_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
-static struct snd_soc_dai_ops wm8978_dai_ops = {
+static const struct snd_soc_dai_ops wm8978_dai_ops = {
.hw_params = wm8978_hw_params,
.digital_mute = wm8978_mute,
.set_fmt = wm8978_set_dai_fmt,
@@ -890,30 +921,28 @@ static struct snd_soc_dai_driver wm8978_dai = {
.formats = WM8978_FORMATS,
},
.ops = &wm8978_dai_ops,
+ .symmetric_rates = 1,
};
-static int wm8978_suspend(struct snd_soc_codec *codec, pm_message_t state)
+static int wm8978_suspend(struct snd_soc_codec *codec)
{
+ struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec);
+
wm8978_set_bias_level(codec, SND_SOC_BIAS_OFF);
/* Also switch PLL off */
snd_soc_write(codec, WM8978_POWER_MANAGEMENT_1, 0);
+ regcache_mark_dirty(wm8978->regmap);
+
return 0;
}
static int wm8978_resume(struct snd_soc_codec *codec)
{
struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec);
- int i;
- u16 *cache = codec->reg_cache;
/* Sync reg_cache with the hardware */
- for (i = 0; i < ARRAY_SIZE(wm8978_reg); i++) {
- if (i == WM8978_RESET)
- continue;
- if (cache[i] != wm8978_reg[i])
- snd_soc_write(codec, i, cache[i]);
- }
+ regcache_sync(wm8978->regmap);
wm8978_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
@@ -946,19 +975,13 @@ static const int update_reg[] = {
static int wm8978_probe(struct snd_soc_codec *codec)
{
struct wm8978_priv *wm8978 = snd_soc_codec_get_drvdata(codec);
- int ret = 0, i;
+ int i;
/*
* Set default system clock to PLL, it is more precise, this is also the
* default hardware setting
*/
wm8978->sysclk = WM8978_PLL;
- codec->control_data = wm8978->control_data;
- ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C);
- if (ret < 0) {
- dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
- return ret;
- }
/*
* Set the update bit in all registers, that have one. This way all
@@ -966,21 +989,10 @@ static int wm8978_probe(struct snd_soc_codec *codec)
* written.
*/
for (i = 0; i < ARRAY_SIZE(update_reg); i++)
- ((u16 *)codec->reg_cache)[update_reg[i]] |= 0x100;
-
- /* Reset the codec */
- ret = snd_soc_write(codec, WM8978_RESET, 0);
- if (ret < 0) {
- dev_err(codec->dev, "Failed to issue reset\n");
- return ret;
- }
+ snd_soc_update_bits(codec, update_reg[i], 0x100, 0x100);
wm8978_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
- snd_soc_add_controls(codec, wm8978_snd_controls,
- ARRAY_SIZE(wm8978_snd_controls));
- wm8978_add_widgets(codec);
-
return 0;
}
@@ -997,36 +1009,68 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8978 = {
.suspend = wm8978_suspend,
.resume = wm8978_resume,
.set_bias_level = wm8978_set_bias_level,
- .reg_cache_size = ARRAY_SIZE(wm8978_reg),
- .reg_word_size = sizeof(u16),
- .reg_cache_default = wm8978_reg,
+
+ .controls = wm8978_snd_controls,
+ .num_controls = ARRAY_SIZE(wm8978_snd_controls),
+ .dapm_widgets = wm8978_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(wm8978_dapm_widgets),
+ .dapm_routes = wm8978_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(wm8978_dapm_routes),
};
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-static __devinit int wm8978_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
+static const struct regmap_config wm8978_regmap_config = {
+ .reg_bits = 7,
+ .val_bits = 9,
+
+ .max_register = WM8978_MAX_REGISTER,
+ .volatile_reg = wm8978_volatile,
+
+ .cache_type = REGCACHE_RBTREE,
+ .reg_defaults = wm8978_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(wm8978_reg_defaults),
+};
+
+static int wm8978_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
{
struct wm8978_priv *wm8978;
int ret;
- wm8978 = kzalloc(sizeof(struct wm8978_priv), GFP_KERNEL);
+ wm8978 = devm_kzalloc(&i2c->dev, sizeof(struct wm8978_priv),
+ GFP_KERNEL);
if (wm8978 == NULL)
return -ENOMEM;
+ wm8978->regmap = devm_regmap_init_i2c(i2c, &wm8978_regmap_config);
+ if (IS_ERR(wm8978->regmap)) {
+ ret = PTR_ERR(wm8978->regmap);
+ dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
+ return ret;
+ }
+
i2c_set_clientdata(i2c, wm8978);
- wm8978->control_data = i2c;
+
+ /* Reset the codec */
+ ret = regmap_write(wm8978->regmap, WM8978_RESET, 0);
+ if (ret != 0) {
+ dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret);
+ return ret;
+ }
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8978, &wm8978_dai, 1);
- if (ret < 0)
- kfree(wm8978);
- return ret;
+ if (ret != 0) {
+ dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
}
-static __devexit int wm8978_i2c_remove(struct i2c_client *client)
+static int wm8978_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
- kfree(i2c_get_clientdata(client));
+
return 0;
}
@@ -1042,32 +1086,11 @@ static struct i2c_driver wm8978_i2c_driver = {
.owner = THIS_MODULE,
},
.probe = wm8978_i2c_probe,
- .remove = __devexit_p(wm8978_i2c_remove),
+ .remove = wm8978_i2c_remove,
.id_table = wm8978_i2c_id,
};
-#endif
-static int __init wm8978_modinit(void)
-{
- int ret = 0;
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
- ret = i2c_add_driver(&wm8978_i2c_driver);
- if (ret != 0) {
- printk(KERN_ERR "Failed to register WM8978 I2C driver: %d\n",
- ret);
- }
-#endif
- return ret;
-}
-module_init(wm8978_modinit);
-
-static void __exit wm8978_exit(void)
-{
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
- i2c_del_driver(&wm8978_i2c_driver);
-#endif
-}
-module_exit(wm8978_exit);
+module_i2c_driver(wm8978_i2c_driver);
MODULE_DESCRIPTION("ASoC WM8978 codec driver");
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-03 18:38:22 +0000