[PATCH 3/4] ASoC: ad1980: Convert to regmap
From: Lars-Peter Clausen
Date: Tue Nov 18 2014 - 13:47:20 EST
This patch converts the ad1980 driver to use regmap for its IO.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
sound/soc/codecs/Kconfig | 1 +
sound/soc/codecs/ad1980.c | 141 ++++++++++++++++++++++++++++------------------
2 files changed, 88 insertions(+), 54 deletions(-)
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 072b784..883c577 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -226,6 +226,7 @@ config SND_SOC_AD193X_I2C
select SND_SOC_AD193X
config SND_SOC_AD1980
+ select REGMAP_AC97
tristate
config SND_SOC_AD73311
diff --git a/sound/soc/codecs/ad1980.c b/sound/soc/codecs/ad1980.c
index 93bd47d..5fd4a29 100644
--- a/sound/soc/codecs/ad1980.c
+++ b/sound/soc/codecs/ad1980.c
@@ -24,32 +24,86 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
+#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/soc.h>
-/*
- * AD1980 register cache
- */
-static const u16 ad1980_reg[] = {
- 0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6 */
- 0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e */
- 0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */
- 0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */
- 0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */
- 0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */
- 0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */
- 0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */
- 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
- 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
- 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
- 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
- 0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */
- 0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
- 0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */
- 0x0000, 0x0000, 0x4144, 0x5370 /* 78 - 7e */
+static const struct reg_default ad1980_reg_defaults[] = {
+ { 0x02, 0x8000 },
+ { 0x04, 0x8000 },
+ { 0x06, 0x8000 },
+ { 0x0c, 0x8008 },
+ { 0x0e, 0x8008 },
+ { 0x10, 0x8808 },
+ { 0x12, 0x8808 },
+ { 0x16, 0x8808 },
+ { 0x18, 0x8808 },
+ { 0x1a, 0x0000 },
+ { 0x1c, 0x8000 },
+ { 0x20, 0x0000 },
+ { 0x28, 0x03c7 },
+ { 0x2c, 0xbb80 },
+ { 0x2e, 0xbb80 },
+ { 0x30, 0xbb80 },
+ { 0x32, 0xbb80 },
+ { 0x36, 0x8080 },
+ { 0x38, 0x8080 },
+ { 0x3a, 0x2000 },
+ { 0x60, 0x0000 },
+ { 0x62, 0x0000 },
+ { 0x72, 0x0000 },
+ { 0x74, 0x1001 },
+ { 0x76, 0x0000 },
+};
+
+static bool ad1980_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case AC97_RESET ... AC97_MASTER_MONO:
+ case AC97_PHONE ... AC97_CD:
+ case AC97_AUX ... AC97_GENERAL_PURPOSE:
+ case AC97_POWERDOWN ... AC97_PCM_LR_ADC_RATE:
+ case AC97_SPDIF:
+ case AC97_CODEC_CLASS_REV:
+ case AC97_PCI_SVID:
+ case AC97_AD_CODEC_CFG:
+ case AC97_AD_JACK_SPDIF:
+ case AC97_AD_SERIAL_CFG:
+ case AC97_VENDOR_ID1:
+ case AC97_VENDOR_ID2:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool ad1980_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case AC97_VENDOR_ID1:
+ case AC97_VENDOR_ID2:
+ return false;
+ default:
+ return ad1980_readable_reg(dev, reg);
+ }
+}
+
+static const struct regmap_config ad1980_regmap_config = {
+ .reg_bits = 16,
+ .reg_stride = 2,
+ .val_bits = 16,
+ .max_register = 0x7e,
+ .cache_type = REGCACHE_RBTREE,
+
+ .volatile_reg = regmap_ac97_default_volatile,
+ .readable_reg = ad1980_readable_reg,
+ .writeable_reg = ad1980_writeable_reg,
+
+ .reg_defaults = ad1980_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(ad1980_reg_defaults),
};
static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
@@ -135,39 +189,13 @@ static const struct snd_soc_dapm_route ad1980_dapm_routes[] = {
static unsigned int ac97_read(struct snd_soc_codec *codec,
unsigned int reg)
{
- struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
- u16 *cache = codec->reg_cache;
-
- switch (reg) {
- case AC97_RESET:
- case AC97_INT_PAGING:
- case AC97_POWERDOWN:
- case AC97_EXTENDED_STATUS:
- case AC97_VENDOR_ID1:
- case AC97_VENDOR_ID2:
- return soc_ac97_ops->read(ac97, reg);
- default:
- reg = reg >> 1;
-
- if (reg >= ARRAY_SIZE(ad1980_reg))
- return -EINVAL;
-
- return cache[reg];
- }
+ return snd_soc_read(codec, reg);
}
static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int val)
{
- struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
- u16 *cache = codec->reg_cache;
-
- soc_ac97_ops->write(ac97, reg, val);
- reg = reg >> 1;
- if (reg < ARRAY_SIZE(ad1980_reg))
- cache[reg] = val;
-
- return 0;
+ return snd_soc_write(codec, reg, val);
}
static struct snd_soc_dai_driver ad1980_dai = {
@@ -219,6 +247,7 @@ static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
static int ad1980_soc_probe(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97;
+ struct regmap *regmap;
int ret;
u16 vendor_id2;
u16 ext_status;
@@ -230,6 +259,13 @@ static int ad1980_soc_probe(struct snd_soc_codec *codec)
return ret;
}
+ regmap = regmap_init_ac97(ac97, &ad1980_regmap_config);
+ if (IS_ERR(regmap)) {
+ ret = PTR_ERR(regmap);
+ goto err_free_ac97;
+ }
+
+ snd_soc_codec_init_regmap(codec, regmap);
snd_soc_codec_set_drvdata(codec, ac97);
ret = ad1980_reset(codec, 0);
@@ -268,6 +304,8 @@ static int ad1980_soc_probe(struct snd_soc_codec *codec)
return 0;
reset_err:
+ snd_soc_codec_exit_regmap(codec);
+err_free_ac97:
snd_soc_free_ac97_codec(ac97);
return ret;
}
@@ -276,6 +314,7 @@ static int ad1980_soc_remove(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
+ snd_soc_codec_exit_regmap(codec);
snd_soc_free_ac97_codec(ac97);
return 0;
}
@@ -283,12 +322,6 @@ static int ad1980_soc_remove(struct snd_soc_codec *codec)
static struct snd_soc_codec_driver soc_codec_dev_ad1980 = {
.probe = ad1980_soc_probe,
.remove = ad1980_soc_remove,
- .reg_cache_size = ARRAY_SIZE(ad1980_reg),
- .reg_word_size = sizeof(u16),
- .reg_cache_default = ad1980_reg,
- .reg_cache_step = 2,
- .write = ac97_write,
- .read = ac97_read,
.controls = ad1980_snd_ac97_controls,
.num_controls = ARRAY_SIZE(ad1980_snd_ac97_controls),
--
1.8.0
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