[alsa-devel] [PATCH 1/2] ASoC: wm9712: Convert to regmap
Lars-Peter Clausen
lars at metafoo.de
Fri Sep 30 19:27:29 CEST 2016
Currently the wm9712 driver still uses custom snd_soc_codec_driver IO
callbacks. This has been deprecated for a while, so convert the wm9712
driver to use regmap for its IO.
Tested-by: Marek Vasut <marex at denx.de>
Acked-by: Marek Vasut <marex at denx.de>
Signed-off-by: Lars-Peter Clausen <lars at metafoo.de>
---
sound/soc/codecs/Kconfig | 1 +
sound/soc/codecs/wm9712.c | 143 +++++++++++++++++++++++++---------------------
2 files changed, 79 insertions(+), 65 deletions(-)
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index c67667b..f472254 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -1057,6 +1057,7 @@ config SND_SOC_WM9705
config SND_SOC_WM9712
tristate
+ select REGMAP_AC97
config SND_SOC_WM9713
tristate
diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index 557709e..d2d0d2b 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -15,6 +15,7 @@
#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>
@@ -32,31 +33,66 @@ struct wm9712_priv {
struct mutex lock;
};
-static unsigned int ac97_read(struct snd_soc_codec *codec,
- unsigned int reg);
-static int ac97_write(struct snd_soc_codec *codec,
- unsigned int reg, unsigned int val);
+static const struct reg_default wm9712_reg_defaults[] = {
+ { 0x02, 0x8000 },
+ { 0x04, 0x8000 },
+ { 0x06, 0x8000 },
+ { 0x08, 0x0f0f },
+ { 0x0a, 0xaaa0 },
+ { 0x0c, 0xc008 },
+ { 0x0e, 0x6808 },
+ { 0x10, 0xe808 },
+ { 0x12, 0xaaa0 },
+ { 0x14, 0xad00 },
+ { 0x16, 0x8000 },
+ { 0x18, 0xe808 },
+ { 0x1a, 0x3000 },
+ { 0x1c, 0x8000 },
+ { 0x20, 0x0000 },
+ { 0x22, 0x0000 },
+ { 0x26, 0x000f },
+ { 0x28, 0x0605 },
+ { 0x2a, 0x0410 },
+ { 0x2c, 0xbb80 },
+ { 0x2e, 0xbb80 },
+ { 0x32, 0xbb80 },
+ { 0x34, 0x2000 },
+ { 0x4c, 0xf83e },
+ { 0x4e, 0xffff },
+ { 0x50, 0x0000 },
+ { 0x52, 0x0000 },
+ { 0x56, 0xf83e },
+ { 0x58, 0x0008 },
+ { 0x5c, 0x0000 },
+ { 0x60, 0xb032 },
+ { 0x62, 0x3e00 },
+ { 0x64, 0x0000 },
+ { 0x76, 0x0006 },
+ { 0x78, 0x0001 },
+ { 0x7a, 0x0000 },
+};
-/*
- * WM9712 register cache
- */
-static const u16 wm9712_reg[] = {
- 0x6174, 0x8000, 0x8000, 0x8000, /* 6 */
- 0x0f0f, 0xaaa0, 0xc008, 0x6808, /* e */
- 0xe808, 0xaaa0, 0xad00, 0x8000, /* 16 */
- 0xe808, 0x3000, 0x8000, 0x0000, /* 1e */
- 0x0000, 0x0000, 0x0000, 0x000f, /* 26 */
- 0x0405, 0x0410, 0xbb80, 0xbb80, /* 2e */
- 0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */
- 0x0000, 0x2000, 0x0000, 0x0000, /* 3e */
- 0x0000, 0x0000, 0x0000, 0x0000, /* 46 */
- 0x0000, 0x0000, 0xf83e, 0xffff, /* 4e */
- 0x0000, 0x0000, 0x0000, 0xf83e, /* 56 */
- 0x0008, 0x0000, 0x0000, 0x0000, /* 5e */
- 0xb032, 0x3e00, 0x0000, 0x0000, /* 66 */
- 0x0000, 0x0000, 0x0000, 0x0000, /* 6e */
- 0x0000, 0x0000, 0x0000, 0x0006, /* 76 */
- 0x0001, 0x0000, 0x574d, 0x4c12, /* 7e */
+static bool wm9712_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case AC97_REC_GAIN:
+ return true;
+ default:
+ return regmap_ac97_default_volatile(dev, reg);
+ }
+}
+
+static const struct regmap_config wm9712_regmap_config = {
+ .reg_bits = 16,
+ .reg_stride = 2,
+ .val_bits = 16,
+ .max_register = 0x7e,
+ .cache_type = REGCACHE_RBTREE,
+
+ .volatile_reg = wm9712_volatile_reg,
+
+ .reg_defaults = wm9712_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(wm9712_reg_defaults),
};
#define HPL_MIXER 0x0
@@ -488,35 +524,13 @@ static const struct snd_soc_dapm_route wm9712_audio_map[] = {
static unsigned int ac97_read(struct snd_soc_codec *codec,
unsigned int reg)
{
- struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
- u16 *cache = codec->reg_cache;
-
- if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
- reg == AC97_VENDOR_ID1 || reg == AC97_VENDOR_ID2 ||
- reg == AC97_REC_GAIN)
- return soc_ac97_ops->read(wm9712->ac97, reg);
- else {
- reg = reg >> 1;
-
- if (reg >= (ARRAY_SIZE(wm9712_reg)))
- return -EIO;
-
- 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 wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
- u16 *cache = codec->reg_cache;
-
- soc_ac97_ops->write(wm9712->ac97, reg, val);
- reg = reg >> 1;
- if (reg < (ARRAY_SIZE(wm9712_reg)))
- cache[reg] = val;
-
- return 0;
+ return snd_soc_write(codec, reg, val);
}
static int ac97_prepare(struct snd_pcm_substream *substream,
@@ -619,8 +633,7 @@ static int wm9712_set_bias_level(struct snd_soc_codec *codec,
static int wm9712_soc_resume(struct snd_soc_codec *codec)
{
struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
- int i, ret;
- u16 *cache = codec->reg_cache;
+ int ret;
ret = snd_ac97_reset(wm9712->ac97, true, WM9712_VENDOR_ID,
WM9712_VENDOR_ID_MASK);
@@ -629,15 +642,8 @@ static int wm9712_soc_resume(struct snd_soc_codec *codec)
snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_STANDBY);
- if (ret == 0) {
- /* Sync reg_cache with the hardware after cold reset */
- for (i = 2; i < ARRAY_SIZE(wm9712_reg) << 1; i += 2) {
- if (i == AC97_INT_PAGING || i == AC97_POWERDOWN ||
- (i > 0x58 && i != 0x5c))
- continue;
- soc_ac97_ops->write(wm9712->ac97, i, cache[i>>1]);
- }
- }
+ if (ret == 0)
+ regcache_sync(codec->component.regmap);
return ret;
}
@@ -645,6 +651,7 @@ static int wm9712_soc_resume(struct snd_soc_codec *codec)
static int wm9712_soc_probe(struct snd_soc_codec *codec)
{
struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
+ struct regmap *regmap;
int ret;
wm9712->ac97 = snd_soc_new_ac97_codec(codec, WM9712_VENDOR_ID,
@@ -655,16 +662,28 @@ static int wm9712_soc_probe(struct snd_soc_codec *codec)
return ret;
}
+ regmap = regmap_init_ac97(wm9712->ac97, &wm9712_regmap_config);
+ if (IS_ERR(regmap)) {
+ ret = PTR_ERR(regmap);
+ goto err_free_ac97_codec;
+ }
+
+ snd_soc_codec_init_regmap(codec, regmap);
+
/* set alc mux to none */
ac97_write(codec, AC97_VIDEO, ac97_read(codec, AC97_VIDEO) | 0x3000);
return 0;
+err_free_ac97_codec:
+ snd_soc_free_ac97_codec(wm9712->ac97);
+ return ret;
}
static int wm9712_soc_remove(struct snd_soc_codec *codec)
{
struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
+ snd_soc_codec_exit_regmap(codec);
snd_soc_free_ac97_codec(wm9712->ac97);
return 0;
}
@@ -673,14 +692,8 @@ static const struct snd_soc_codec_driver soc_codec_dev_wm9712 = {
.probe = wm9712_soc_probe,
.remove = wm9712_soc_remove,
.resume = wm9712_soc_resume,
- .read = ac97_read,
- .write = ac97_write,
.set_bias_level = wm9712_set_bias_level,
.suspend_bias_off = true,
- .reg_cache_size = ARRAY_SIZE(wm9712_reg),
- .reg_word_size = sizeof(u16),
- .reg_cache_step = 2,
- .reg_cache_default = wm9712_reg,
.component_driver = {
.controls = wm9712_snd_ac97_controls,
--
2.1.4
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